CN219047897U - Bed with a bed body - Google Patents

Abstract

The application discloses a bed, including: a bed frame; the first movable bed board is rotatably connected with the bed frame; a first link having a first end and a second end disposed opposite to each other, the first end rotatably coupled to the frame; a second link having a third end and a fourth end disposed opposite each other, the third end rotatably coupled to the first link and located between the first end and the second end; the first driving mechanism is arranged on the bedstead and is connected with the fourth end part in a driving way; the first driving mechanism can drive the fourth end part to move so as to drive the first connecting rod to rotate along with the second connecting rod; the bed frame is provided with a bed board supporting surface facing the first movable bed board; under the condition that the first connecting rod rotates, the first movable bed board can rotate along with the first connecting rod so as to be separated from the bed board supporting surface, so that the first connecting rod and the second connecting rod support the first movable bed board together, and an included angle is formed between the first connecting rod and the second connecting rod. In conclusion, the double-connecting-rod supporting structure is adopted, triangular supporting stress is formed, and the stress of the connecting rod is more reasonable.

Description

Bed with a bed body

Technical Field

The present application relates to the field of furniture, and in particular to a bed.

Background

The bed can be used for rest, sleep and the like of a human body, in order to bring more comfortable experience to people, some beds on the market at present can be subjected to corresponding posture adjustment, such as lifting of a bed board, so that people can perform actions such as reclining, leg lifting and the like on the bed, more abundant use scenes are provided, and more diversified use experience is brought to users.

In order to realize posture adjustment of the bed, a driving mechanism, a transmission mechanism and the like are added on the bed to drive the bed board to move. For example, in chinese patent CN 205410500U, one end of a connecting rod is rotatably connected with a threaded sleeve on a screw mechanism, and the other end is rotatably connected with a movable bed board, and the screw mechanism drives the connecting rod to move according to a specific path, so that power is transmitted to the movable bed board, and lifting of the movable bed board is realized.

It can be seen that the lifting mode of the single-link driving bed board in the chinese patent CN 205410500U will cause unreasonable stress of the link, specifically, the link will bear a larger load of the bed board in the lifting process of the bed board, which easily causes unstable support of the link, reduces the user experience feeling, and easily causes damage of moving parts such as the link and the bed board, and reduces the service life of the bed.

Disclosure of Invention

The embodiment of the application discloses a bed can solve among the related art because single connecting rod drive bed board plays to rise, leads to the connecting rod atress unreasonable, and then leads to the connecting rod to support unstably, damages, reduces bed life's problem.

To achieve the above object, in a first aspect, the present application discloses a bed comprising: a bed frame; the first movable bed board is rotatably connected with the bed frame; a first link having a first end and a second end disposed opposite to each other, the first end rotatably coupled to the frame; a second link having a third end and a fourth end disposed opposite each other, the third end rotatably coupled to the first link and located between the first end and the second end; the first driving mechanism is arranged on the bedstead and is connected with the fourth end part in a driving way; the first driving mechanism can drive the fourth end part to move towards the first direction so as to drive the first connecting rod to rotate along with the second connecting rod around the second direction; the first direction is the length direction of the bed frame, and the second direction is the width direction of the bed frame; the bed frame is provided with a bed board supporting surface facing the first movable bed board; under the condition that the first connecting rod rotates, the first movable bed board can rotate along with the first connecting rod around the second direction so as to be attached to or separated from the bed board supporting surface; under the condition that the first movable bed plate is separated from the bed plate supporting surface, the second end part is contacted with the first movable bed plate, the first connecting rod support is arranged between the first movable bed plate and the bed frame, the second connecting rod support is arranged on the first connecting rod, and an included angle is formed between the first connecting rod and the second connecting rod.

Optionally, the bed frame further comprises a first guide rail, wherein the first guide rail is arranged on the bed frame; the fourth end part is movably arranged on the first guide rail and is in guide fit with the first guide rail towards the first direction; under the condition that the first movable bed board is separated from the bed board supporting surface, the second connecting rod is supported between the first connecting rod and the first guide rail.

Optionally, the device further comprises a first roller, wherein the first roller is rotatably arranged at the fourth end part and is movably arranged on the first guide rail; the fourth end part is in guide fit with the first guide rail in the first direction through the first roller.

Optionally, the device further comprises a first driving shaft, and the first driving mechanism is connected with the first driving shaft in a driving way; the first connecting rod and the second connecting rod are in one-to-one correspondence to form a connecting rod driving group, the connecting rod driving group is provided with two groups towards the second direction, and the first driving mechanism and the first driving shaft are both positioned between the two groups of connecting rod driving groups; the first driving mechanism is connected with the fourth end parts of the two connecting rod driving groups through a first driving shaft respectively, and can drive the fourth end parts to move along with the first driving shaft in a first direction.

Optionally, the device further comprises a second roller, wherein the second roller is rotatably arranged at the second end part; under the condition that the first movable bed board is separated from the bed board supporting surface, the first connecting rod is contacted with the first movable bed board through the second roller.

Optionally, the first driving mechanism includes: a first motor; the first screw rod is in driving connection with the first motor, and the length direction of the first screw rod is consistent with the first direction; the first screw sleeve is sleeved on the first screw rod and is in spiral transmission fit with the first screw rod; the first screw sleeve is connected with the first driving shaft; the first motor can drive the first screw sleeve to move along with the first screw rod in a first direction; the first screw sleeve can drive the fourth end part to move along with the first driving shaft towards the first direction.

Optionally, the first driving mechanism further comprises a first housing, the first housing is arranged on the bed frame, the first housing is hollow, the first motor, the first screw rod and the first screw sleeve are all arranged in the first housing, the first housing is provided with a guide groove, the first portion of the first driving shaft is arranged on the first housing, and the second portion of the first driving shaft extends out of the first housing through the guide groove to be connected with the second connecting rod.

Optionally, the first housing has a first side wall and a second side wall disposed opposite to each other, a guide rail cavity is formed between the first side wall and the second side wall, and the first screw sleeve is movably disposed in the guide rail cavity and is in guiding fit with the guide rail cavity along the first direction.

Optionally, the first driving mechanism further comprises: the first worm wheel is arranged on the first screw rod, the first worm rod is connected with the first motor in a driving mode and matched with the first worm wheel in a driving mode, the first motor can drive the first worm rod to rotate, and the first worm rod can drive the first screw rod to rotate along with the first worm wheel so that the first screw sleeve moves along with the first screw rod in the first direction.

Optionally, the method further comprises: the first movable bed board and the second movable bed board are sequentially arranged towards the first direction; one side of the second movable bed plate, which faces the first movable bed plate, is rotatably connected with the bed frame, and one side of the first movable bed plate, which faces the second movable bed plate, is rotatably connected with the bed frame; the third connecting rod is provided with a fifth end part and a sixth end part which are oppositely arranged, and the fifth end part is rotatably connected with the second movable bed board; the second driving mechanism is arranged on the bed frame and is connected with the sixth end part in a driving way; the second driving mechanism can drive the sixth end part to move towards the first direction so as to drive the second movable bed board to rotate along with the third connecting rod around the second direction, so that the second movable bed board is attached to or separated from the bed board supporting surface; and under the condition that the second movable bed board is separated from the bed board supporting surface, the third connecting rod is supported on the second movable bed board.

Optionally, the bed frame further comprises a third movable bed plate and a fourth connecting rod, wherein the first movable bed plate, the second movable bed plate and the third movable bed plate are sequentially arranged towards the first direction, and two opposite sides of the second movable bed plate are respectively and rotatably connected with the bed frame and the third movable bed plate; the fourth connecting rod is provided with a seventh end part and an eighth end part which are oppositely arranged, the seventh end part is rotatably connected with the third movable bed board, and the eighth end part is rotatably connected with the bed frame; under the condition that the second movable bed board rotates, the second movable bed board can drive the fourth connecting rod to rotate along with the third movable bed board so as to enable the third movable bed board to be attached to or separated from the bed board supporting surface; under the condition that the third movable bed board is separated from the bed board supporting surface, the fourth connecting rod is supported between the third movable bed board and the bed frame, and the included angle between the third movable bed board and the bed board supporting surface is smaller than the included angle between the second movable bed board and the bed board supporting surface.

Optionally, the bed frame further comprises a second guide rail and a third roller, the second guide rail is arranged on the bed frame, the third roller is rotatably arranged at the sixth end part and is movably arranged on the second guide rail, and the third roller is in guide fit with the second guide rail towards the first direction; and under the condition that the second movable bed plate is separated from the bed plate supporting surface, the third connecting rod is supported between the second movable bed plate and the second guide rail.

Optionally, the device further comprises a second driving shaft, and the second driving mechanism is in driving connection with the second driving shaft; the second driving mechanism and the second driving shaft are positioned between the two third connecting rods; the second driving mechanism is respectively connected with the two third connecting rods through a second driving shaft, and can drive the second driving shaft to move so as to drive the sixth end part to move towards the first direction.

In a second aspect, the present application discloses another bed comprising: a bed frame; the second movable bed board is provided with a first side and a second side which are oppositely arranged towards the first direction, and the first side is rotatably connected with the bed frame; the first direction is the length direction of the bed frame; the third movable bed board is rotatably connected with the second side of the second movable bed board; the third connecting rod is provided with a fifth end part and a sixth end part which are oppositely arranged, and the fifth end part is rotatably connected with the second movable bed board; the second driving mechanism is arranged on the bed frame and is connected with the sixth end part in a driving way; the fourth connecting rod is provided with a seventh end part and an eighth end part which are oppositely arranged, the seventh end part is rotatably connected with the third movable bed board, and the eighth end part is rotatably connected with the bed frame; the bed frame is provided with a bed board supporting surface; the second driving mechanism can drive the sixth end part to move towards the first direction so as to drive the second movable bed board to rotate along with the third connecting rod around the second direction, so that the second movable bed board is attached to or separated from the bed board supporting surface; the second direction is the width direction of the bedstead; the second movable bed board can drive the fourth connecting rod to rotate along with the third movable bed board so as to enable the third movable bed board to be attached to or separated from the bed board supporting surface; under the condition that the second movable bed board is separated from the bed board supporting surface, the third connecting rod is supported on the second movable bed board, and the fourth connecting rod is supported between the third movable bed board and the bed frame.

Compared with the prior art, the beneficial effects of this application are:

the application is through carrying out optimal design to the bed, specifically is the design bed includes: a bed frame; the first movable bed board is rotatably connected with the bed frame; a first link having a first end and a second end disposed opposite to each other, the first end rotatably coupled to the frame; a second link having a third end and a fourth end disposed opposite each other, the third end rotatably coupled to the first link and located between the first end and the second end; the first driving mechanism is arranged on the bedstead and is connected with the fourth end part in a driving way; the first driving mechanism can drive the fourth end part to move towards the first direction so as to drive the first connecting rod to rotate along with the second connecting rod around the second direction; the first direction is the length direction of the bed frame, and the second direction is the width direction of the bed frame; the bed frame is provided with a bed board supporting surface facing the first movable bed board; under the condition that the first connecting rod rotates, the first movable bed board can rotate along with the first connecting rod around the second direction so as to be attached to or separated from the bed board supporting surface; under the condition that the first movable bed plate is separated from the bed plate supporting surface, the second end part is contacted with the first movable bed plate, the first connecting rod support is arranged between the first movable bed plate and the bed frame, the second connecting rod support is arranged on the first connecting rod, and an included angle is formed between the first connecting rod and the second connecting rod.

According to the mechanical knowledge, when the first movable bed board is lifted, one part of load of the first movable bed board is transferred to the bed frame through the first connecting rod, and the other part of load is transferred to the second connecting rod, namely the first connecting rod and the second connecting rod are mutually matched to support and bear the first movable bed board.

Meanwhile, the arrangement and the connection mode of the first connecting rod and the second connecting rod enable an included angle to be formed between the first connecting rod and the second connecting rod all the time under the condition that the first movable bed board is separated from the bed board supporting surface, so that a triangular supporting structure is formed, stable supporting of the first movable bed board is kept, and abnormal phenomena such as slipping and shaking are reduced.

To sum up, the atress of connecting rod can be reduced to the double-link bearing structure of this application, and first connecting rod and second connecting rod cooperation can form triangle bearing structure simultaneously, give the more stable support of first movable bed board for the atress of connecting rod is more reasonable, has reduced the connecting rod and has damaged, drive jamming etc. unusual probability, does benefit to the life of extension bed, improves user experience and feels.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall block diagram of a bed as disclosed herein;

FIG. 2 is an enlarged view of the area I of FIG. 1, disclosed herein;

FIG. 3 is a front view of a bed as disclosed herein;

FIG. 4 is a block diagram of a headboard attached to a support surface of a bedplate as disclosed herein;

FIG. 5 is an enlarged view of portion II of FIG. 4 as disclosed herein;

FIG. 6 is a block diagram of a support surface of a headboard separation bed disclosed herein;

FIG. 7 is an enlarged view of FIG. 6 at III as disclosed herein;

FIG. 8 is an enlarged view of the portion IV of FIG. 7 as disclosed herein;

FIG. 9 is a diagram of a bed end disclosed herein;

FIG. 10 is an enlarged view of V of FIG. 9 as disclosed herein;

fig. 11 is an enlarged view of VI of fig. 9 as disclosed herein.

Reference numerals illustrate:

X-first direction, Y-second direction, Z-third direction,

110-bed frame,

111-a first fixed bed board, 112-a second fixed bed board,

120-first movable bed board, 130-second movable bed board, 140-third movable bed board,

210-a first connecting rod,

211-a first end, 212-a second end,

220-a second link,

221-third end, 222-fourth end,

230-a third connecting rod,

231-fifth end, 232-sixth end,

240-fourth link,

241-seventh end, 242-eighth end,

310-a first driving mechanism,

311-first motor, 312-first screw, 313-first screw sleeve, 314-first housing, 317-guide groove, 318-guide rail cavity, 315-first worm wheel, 316-first worm,

320-a second driving mechanism,

410-a first drive shaft, 420-a second drive shaft,

510-a first guide rail, 520-a second guide rail,

610-first roller, 620-second roller, 630-third roller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

In the related art, the structure of the bed has been greatly innovated, not only can satisfy the sleeping demands of people, but also some beds on the market can realize angle adjustment through lifting of the bed board and the like, so that a user can recline on the bed, lift legs and the like, more abundant use scenes are provided, and more diversified use experiences are brought to the user.

Lifting of the bed board is usually realized by installing a driving mechanism and through connecting rod transmission, but in the related art, a connecting rod is usually directly connected with the bed frame and the bed board, the connecting rod is caused to bear larger load of the bed board in a single connecting rod driving mode, the connecting rod is unreasonably stressed, the problems of unstable support, damage of the connecting rod and the like are caused, and the service life of the bed is reduced. The following description will begin with fig. 1 to 11 for the purpose of changing the stress manner of the connecting rod.

Referring to fig. 1 to 3, the present application discloses a bed, which may include a bed frame 110, a first movable bed plate 120, a first link 210, a second link 220, and a first driving mechanism 310. Wherein, bedstead 110 is the main part of this application, can regard as the installation basis of other spare parts, and first actuating mechanism 310 is the power source that first movable bed board 120 realized the motion, and first link 210 and second link 220 are as the driving medium, can transmit the driving force that first actuating mechanism 310 produced to first movable bed board 120.

Specifically, first movable bed board 120 is rotatably connected to bed frame 110 to achieve angular adjustment by rotation, and first movable bed board 120 and bed frame 110 are generally disposed in sequence along a third direction Z, where third direction Z is generally understood as the height direction of the bed, and can also be understood as the gravitational direction when the bed is in use.

The first link 210 has a first end 211 and a second end 212 disposed opposite each other, wherein the first end 211 is rotatably coupled to the frame 110. The second link 220 has a third end 221 and a fourth end 222 disposed opposite to each other, and the third end 221 is rotatably connected to the first link 210 and is located between the first end 211 and the second end 212.

The first driving mechanism 310 is disposed on the bed frame 110 and is drivingly connected to the fourth end 222. For example, the first driving mechanism 310 is an electric push rod mechanism, an air cylinder mechanism, or the like, so as to generate a driving force to drive the fourth end 222 to move in the first direction X, and drive the first link 210 to rotate along with the second link 220 around the second direction Y.

Here, the first link 210 and the second link 220 may be regarded as a slider-crank mechanism, where the first link 210 is used as a power output end, the second link 220 is used as a power transmission end, and when the first driving mechanism 310 is started, the linear motion of the first link 210 at the fourth end 222 will be finally converted into the rotational motion of the second link 220, and the center of the rotational motion is the first end 211. The first direction X may be understood as a length direction of the frame 110, and the second direction Y may be understood as a width direction of the frame 110.

The bed frame 110 has a bed plate supporting surface facing the first movable bed plate 120 to support the bed plate. It can be seen that, when the first link 210 rotates, the first movable bed board 120 can rotate around the second direction Y along with the first link 210 to attach to or detach from the bed board supporting surface.

The first movable bed board 120 is attached to the bed board supporting surface, which can be understood that the first movable bed board 120 is in a horizontal position, that is, the first movable bed board 120 is in a descending state, and is usually used as sleeping and resting of a user. The first movable bed board 120 is separated from the bed board supporting surface, which can be understood that the first movable bed board 120 rotates to form a certain included angle with the bed board supporting surface, that is, the state when the first movable bed board 120 is lifted, and can be used as a state of recumbent, reading and the like of a user.

In the case where the first movable bed board 120 is separated from the bed board support surface, the second end 212 is in contact with the first movable bed board 120, the first link 210 is supported and disposed between the first movable bed board 120 and the bed frame 110, and the second link 220 is supported by the first link 210.

According to the mechanical knowledge, when the first movable bed board 120 is lifted, a part of the load of the first movable bed board 120 is transferred to the bed frame 110 through the first connecting rod 210, and another part of the load is transferred to the second connecting rod 220, that is, the first connecting rod 210 and the second connecting rod 220 cooperate with each other to support and bear the load of the first movable bed board 120, and compared with the single connecting rod bearing mode in the related art, the double connecting rod bearing mode has the advantages that the stress of the connecting rods is reduced, and the damage risk of the connecting rods is reduced.

Meanwhile, as described above, under the condition that the first movable bed board 120 is separated from the bed board supporting surface, an included angle is formed between the first connecting rod 210 and the second connecting rod 220, that is, the first connecting rod 210 and the second connecting rod 220 form a triangular supporting structure, so that the first movable bed board 120 is stably supported, and the occurrence of the anomalies such as slipping, shaking and the like is reduced.

In conclusion, the double-link supporting structure can reduce the stress of the links, reduce the abnormal probability of damage and the like of the links, and is beneficial to prolonging the service life of the bed; meanwhile, the formed triangular support structure can provide more stable support for the first movable bed board 120, so that the stress of the connecting rod is more reasonable, and the user experience is improved.

Alternatively, when the first movable bed board 120 is lifted, a part of the load may be transferred to the first driving mechanism 310 through the second link 220, that is, the second link 220 may be supported between the first movable bed board 120 and the first driving mechanism 310, but the first driving mechanism 310 may serve as a power component, and if a part of the supporting function is also needed, the load of the first driving mechanism 310 is definitely increased, and for this reason, the bed of the present application may further include the first guide rail 510.

Specifically, as shown in fig. 1 to 3, the first guide rail 510 may be provided on the bed frame 110, and the fourth end 222 may be movably provided on the first guide rail 510 and be in guiding engagement with the first guide rail 510 in the first direction X; with the first movable couch 120 separated from the couch top support surface, the second link 220 is supported between the first link 210 and the first rail 510.

It can be seen that the arrangement of the first guide rail 510 can play a guiding role on one hand to restrict the movement path of the fourth end 222, prevent occurrence of anomalies such as movement deflection, etc., so as to further improve the operability of the bed; on the other hand, a supporting function can be exerted, namely, a part of the load of the first movable bed board 120 can be transmitted to the first guide rail 510 through the second connecting rod 220, so that the load is prevented from being finally carried by the first driving mechanism 310, and the multiplexing of the first guide rail 510 is realized.

Optionally, as shown in fig. 1-3, the present application may further include a first roller 610. The first roller 610 is rotatably disposed at the fourth end 222 and movably disposed on the first rail 510; the fourth end 222 is in guiding engagement with the first rail 510 in the first direction X by the first roller 610.

It can be seen that, due to the rolling characteristic of the first roller 610, when the first movable bed board 120 is driven to move, the friction force between the second link 220 and the first guide rail 510 can be reduced, so that the driving force required by the first driving mechanism 310 can be reduced, the movement of the whole device is smoother, the clamping stagnation is prevented, and the energy saving is facilitated.

Alternatively, as shown in fig. 1-3, the present application may further include a first drive shaft 410, where the first drive mechanism 310 is drivingly connected to the first drive shaft 410.

The first link 210 and the second link 220 form a link driving group in one-to-one correspondence, the link driving groups are arranged in two groups in the second direction Y, and the first driving mechanism 310 and the first driving shaft 410 are both located between the two groups of link driving groups.

The first driving mechanism 310 is connected to the fourth end 222 of the two link driving sets through the first driving shaft 410, and the first driving mechanism 310 can drive the fourth end 222 to move along the first driving shaft 410 in the first direction X.

It can be seen that, in the above arrangement, the two sides of the first movable bed board 120 facing the second direction Y are supported by the first connecting rod 210 and the second connecting rod 220, so that the supporting structure is more stable, and the stress of the first connecting rod 210 and the second connecting rod 220 is smaller.

Meanwhile, the force is transmitted through the first driving shaft 410, and only a single first driving mechanism 310 is arranged, so that the driving of the two groups of connecting rod driving groups is realized, and the first driving mechanism 310 is saved.

Optionally, as shown in fig. 1-3, the present application may further include a second roller 620, where the second roller 620 is rotatably disposed at the second end 212. In the case where the first movable couch plate 120 is separated from the couch plate support surface, the first link 210 contacts the first movable couch plate 120 through the second roller 620.

The second roller 620 can reduce the friction force of the first link 210 when the first movable bed board 120 slides, so as to reduce the driving force required by the first driving mechanism 310 when driving the first movable bed board 120 to move, so that the device operates more smoothly without jamming, and is beneficial to saving energy.

Alternatively, as the first driving mechanism 310 may be any mechanism that implements driving in a straight direction, such as an electric push rod, an air cylinder mechanism, etc., as shown in fig. 6 to 8, the setting of the first driving mechanism 310 may include: a first motor 311, a first screw 312, and a first barrel 313.

The first screw 312 is drivingly connected to the first motor 311, and the longitudinal direction of the first screw 312 coincides with the first direction X. The first screw sleeve 313 is sleeved on the first screw rod 312 and is in screw transmission fit with the first screw rod 312; the first screw sleeve 313 is connected to the first driving shaft 410.

The first motor 311 can drive the first screw sleeve 313 to move along with the first screw 312 in the first direction X; the first threaded sleeve 313 may drive the fourth end 222 to move along the first driving shaft 410 in the first direction X.

Specifically, when the first motor 311 is started, the first screw 312 will rotate, and the first sleeve 313 will move along the length direction of the first screw 312 through the screw transmission, so as to drive the fourth end 222 to move in the first direction X, and finally drive the first movable bed board 120.

It can be seen that the first motor 311, the first screw 312 and the first screw sleeve 313 form a screw mechanism, and the screw mechanism is stable in transmission, heavy in low speed and high in transmission torque, and high in transmission precision, and is suitable for driving the first movable bed board 120 in the application.

Optionally, as shown in fig. 4 and 6, the first drive mechanism 310 may also include a first housing 314. The first housing 314 is disposed on the bed frame 110, the first housing 314 is hollow, the first motor 311, the first screw 312 and the first screw sleeve 313 are disposed in the first housing 314, the first housing 314 is provided with a guide groove 317, a first portion of the first driving shaft 410 is disposed on the first housing 314, and a second portion of the first driving shaft 410 extends out of the first housing 314 through the guide groove 317 to connect the second connecting rod 220.

The design of the first housing 314 facilitates assembly to enhance device integration while also providing shade protection, dust and water resistance for related components and parts, and the related components and parts are hidden in the first housing 314 and also enhance the appearance of the bed.

Optionally, the guiding groove 317 may be a waist-shaped groove, and the length direction of the guiding groove 317 may be set towards the first direction X and is in guiding fit with the first driving shaft 410 towards the first direction X, so as to further control the direction of the driving force output by the first driving mechanism 310, further better ensure the correctness of the motion path of each driving component, and improve the operability of the device.

Alternatively, as shown in fig. 7, the first housing 314 has a first side wall and a second side wall disposed opposite to each other, a guide cavity 318 is formed between the first side wall and the second side wall, and the first screw sleeve 313 is movably disposed in the guide cavity 318 and is in guiding engagement with the guide cavity 318 along the first direction X.

Specifically, the width dimension of the guide rail cavity 318 may be consistent with the width dimension of the first screw sleeve 313 or slightly larger than the width dimension of the first screw sleeve 313, but the gap may be controlled within 0.5mm to form a constraint on the movement path of the first screw sleeve 313, so as to prevent the first screw sleeve 313 from deviating from the first direction X when moving, and further ensure the accuracy of the movement path of each transmission component. Here, the width direction of the first screw cap 313 and the width of the rail chamber 318 are both directed in the second direction Y.

Alternatively, as shown in fig. 7, the first threaded sleeve 313 is provided with a first threaded hole and a first through hole, the direction of the first threaded hole is intersected with the direction of the first through hole, the first threaded hole is in threaded connection with the first screw 312, and the first through hole is sleeved with the first driving shaft 410. Thus, the first screw sleeve 313 is used as a transmission medium, and the connection with the first driving shaft 410 and the first screw 312 is more convenient.

Optionally, the first driving mechanism 310 may further include: the first worm wheel 315 and the first worm 316, the first worm wheel 315 is arranged on the first screw rod 312, and the rotating shaft direction of the first screw rod 312 and the rotating shaft direction of the first worm wheel 315 are consistent with the first direction X.

The first worm 316 is in driving connection with the first motor 311 and is in transmission fit with the first worm gear 315, and the rotating shaft direction of the first worm 316 and the rotating shaft direction of the first motor 311 are consistent with the second direction.

The first motor 311 may drive the first worm 316 to rotate, and the first worm 316 may drive the first screw 312 to rotate along with the first worm gear 315, so that the first sleeve 313 moves along with the first screw 312 in the first direction X.

It can be seen that the first worm wheel 315 and the first worm 316 form a worm wheel and worm mechanism, so that the reversing transmission can be realized in the first aspect, and the space in the bed frame 110 can be better utilized to layout the parts in the first driving mechanism 310; in the second aspect, the worm and gear mechanism formed by the first worm wheel 315 and the first worm 316 is matched with the screw rod speed reducing mechanism formed by the first screw rod 312 and the first screw sleeve 313, so that two-stage speed reduction can be realized, the output torque can be further improved, the driving force to the first movable bed board 120 is increased, and the realization of transmission is facilitated; in the third aspect, the worm and gear mechanism has a self-locking function, so that the reverse rotation in the driving process can be prevented, and further, the occurrence of 'slipping' and other anomalies can be prevented, and the normal operation of driving work can be effectively ensured.

Alternatively, as shown in fig. 3, the bed frame 110 may be provided with a first fixed bed plate 111, and the first fixed bed plate 111 is attached to the bed plate supporting surface. The first movable bed board 120 and the first fixed bed board 111 can be sequentially arranged towards the first direction X, and the bed frame 110 is rotationally connected with the first movable bed board 120 through the first fixed bed board 111, for example, the first fixed bed board 111 and the first movable bed board 120 are relatively rotated through a plurality of hinges, so that the first movable bed board 120 can be more conveniently installed.

Optionally, as shown in fig. 3, 9 and 10, the bed may further comprise: a second movable couch 130, a third link 230 and a second drive mechanism 320.

Wherein, the first movable bed board 120 and the second movable bed board 130 are sequentially arranged towards the first direction X; the side of the second movable bed board 130 facing the first movable bed board 120 is rotatably connected to the bed frame 110, and the side of the first movable bed board 120 facing the second movable bed board 130 is rotatably connected to the bed frame 110. The first movable couch 120 may be understood herein as a headboard mounted on a headboard side, while the second movable couch 130 may be understood as a footboard mounted on a footboard side.

The third link 230 has a fifth end 231 and a sixth end 232 disposed opposite to each other, and the fifth end 231 is rotatably connected to the second movable bed plate 130. The second driving mechanism 320 is disposed on the bed frame 110 and is connected to the sixth end 232, and the second driving mechanism 320 can drive the sixth end 232 to move in the first direction X, so as to drive the second movable bed board 130 to rotate along with the third link 230 around the second direction Y, so that the second movable bed board 130 is attached to or separated from the bed board supporting surface.

Similarly, the second movable bed board 130 is in a horizontal position when attached to the bed board supporting surface, and at this time, if the first movable bed board 120 is also attached to the bed board supporting surface, the user can conveniently sleep on the bed. And when the second movable bed board 130 separates the bed board supporting surface, a certain included angle is formed between the second movable bed board and the horizontal surface, so that the support of the postures such as leg lifting and the like of the user is facilitated.

And in the case that the second movable couch 130 is separated from the couch supporting surface, the third link 230 is supported on the second movable couch 130, so that the second movable couch 130 can maintain the current position.

In this way, the rotatable arrangement of the second movable bed board 130 can enable the bed to have more form changes, and is more effectively suitable for posture adjustment when a user uses the bed, for example, when the user reclines on the bed for reading and reading, the first movable bed board 120 can rotate a certain angle to be separated from the bed board supporting surface, the second movable bed board 130 can be attached to the bed board supporting surface to support the current posture of the user, and meanwhile, when the user reclines on the bed for reading and reading, the user wants to slightly change the body position, and when the user lifts the legs, the second movable bed board 130 can be further rotated a certain angle to be separated from the bed board supporting surface to support the lifted legs; for example, when the user wants to sleep or rest, the first movable bed board 120 and the second movable bed board 130 can be attached to the bed board supporting surface.

It can be seen that the second movable bed board 130 can make the bed have stronger applicability, adapt to more use scenes, and better satisfy the diversified demands of users.

Optionally, the second driving mechanism 320 may be the same as the first driving mechanism 310, that is, the second driving mechanism 320 also includes a first motor 311, a first screw rod 312, a first screw sleeve 313, a first housing 314, a guide groove 317, a guide rail cavity 318, a first worm wheel 315, a first worm 316, and the like, so as to achieve large torque transmission, and better drive the movement of the second movable bed board 130 and the third movable bed board 140.

Optionally, as shown in fig. 3, 9 and 11, the bed of the present application may further include a third movable couch plate 140 and a fourth link 240. The first movable bed board 120, the second movable bed board 130 and the third movable bed board 140 are sequentially arranged towards the first direction X, and two opposite sides of the second movable bed board 130 are respectively and rotatably connected with the bed frame 110 and the third movable bed board 140. Wherein the second movable couch plate 130 and the third movable couch plate 140 may be considered in combination as a couch tail.

The fourth link 240 has a seventh end 241 and an eighth end 242 disposed opposite to each other, the seventh end 241 being rotatably connected to the third movable bed plate 140, and the eighth end 242 being rotatably connected to the bed frame 110.

Under the condition that the second movable bed board 130 rotates, the second movable bed board 130 can drive the fourth connecting rod 240 to rotate along with the third movable bed board 140, so that the third movable bed board 140 is attached to or separated from the bed board supporting surface.

In case that the third movable bed board 140 is separated from the bed board supporting surface, the fourth link 240 is supported between the third movable bed board 140 and the bed frame 110 to ensure the stability of the current position of the third movable bed board 140.

Meanwhile, in the case that the third movable couch plate 140 is separated from the couch plate supporting surface, an included angle between the third movable couch plate 140 and the couch plate supporting surface is smaller than an included angle between the second movable couch plate 130 and the couch plate supporting surface. Thus, even if the third movable bed plate 140 is in a lifted state, the third movable bed plate 140 is in a substantially horizontal state, and is not excessively lifted, so that the third movable bed plate is more suitable for supporting the legs of a user in cooperation with the second movable bed plate 130 when the user lifts the legs.

It can be seen that the whole bed tail plate formed by the third movable bed plate 140 and the second movable bed plate 130 also adopts a double-link supporting mode, so that the rationality of the stress of the link is improved.

Alternatively, as shown in fig. 3, as described above, the second movable couch 130 is supported by the third link 230, and the third movable couch 140 is supported by the fourth link 240, that is, both are supported by the single link, for which the second movable couch 130 and the third movable couch 140 may be provided so as to satisfy:

L2＜L1；L3＜L1。

Wherein L2 is the length of the second movable bed board 130; l3 is the length dimension of the third movable bed plate 140, L1 is the length dimension of the first movable bed plate 120, the length direction of the second movable bed plate 130, the length direction of the third movable bed plate 140 and the length direction of the first movable bed plate 120 are consistent with the length direction of the bed frame 110, and the width dimensions of the three are equal.

Therefore, the lengths of the second movable bed board 130 and the third movable bed board 140 are smaller than those of the first movable bed board 120, so that the weights of the second movable bed board 130 and the third movable bed board 140 are smaller than those of the first movable bed board 120, the connecting rods are stressed less, the connecting rods are not broken even if supported by the single connecting rods, and the connecting rods are stressed reliably and effectively.

Optionally, as shown in fig. 9 and 10, the bed of the present application may further include a second rail 520 and a third roller 630. The second rail 520 is disposed on the bed frame 110, the third roller 630 is rotatably disposed on the sixth end 232 and movably disposed on the second rail 520, and the third roller 630 is in guiding engagement with the second rail 520 in the first direction X. In the case where the second movable couch 130 is separated from the couch supporting surface, the third link 230 is supported between the second movable couch 130 and the second guide rail 520.

Similarly, the guiding action of the second guide rail 520 in this arrangement can form a constraint on the movement of the sixth end 232, preventing it from deviating from the predetermined path during movement, and thus ensuring the effectiveness of the drive. The rollability of the third roller 630 may further reduce the friction force when the third link 230 moves, thereby reducing the driving force required when the second movable bed board 130 moves, further reducing energy consumption and reducing the occurrence probability of abnormalities such as jamming.

Alternatively, as shown in fig. 9 and 10, the bed of the present application may further include a second drive shaft 420, with the second drive mechanism 320 drivingly connected to the second drive shaft 420.

The third links 230 are arranged in two in the second direction Y, and the second driving mechanism 320 and the second driving shaft 420 are both located between the two third links 230; the second driving mechanism 320 is connected to the two third links 230 through the second driving shaft 420, and the second driving mechanism 320 can drive the second driving shaft 420 to move so as to drive the sixth end 232 to move in the first direction X.

Thus, when the second movable bed board 130 rotates, the two sides are driven and supported by the third connecting rod 230 at the same time, so that the driving force is more stable, and the supportability is more reliable.

Similarly, two fourth connecting rods 240 may be disposed along the second direction Y to support two sides of the third movable bed board 140 at the same time, so that the supporting effect is better.

Optionally, the bed frame 110 may be provided with a second fixed bed board 112, and the second fixed bed board 112 is attached to the bed board supporting surface; the bed frame 110 is rotatably connected with the second movable bed board 130 through the second fixed bed board 112, so that the second movable bed board 130 can be more conveniently installed.

Alternatively, the bed frame 110 may be a combined structure and include a first sub-bed frame and a second sub-bed frame connected to each other, wherein the first sub-bed frame corresponds to the first movable bed board 120, the first fixed bed board 111, and is connected to each other, and the second sub-bed frame corresponds to the second movable bed board 130, the third movable bed board 140, and the second fixed bed board 112, and is connected to each other. Thus, the bed can be conveniently assembled.

In the present application, only the second movable bed plate 130 and the third movable bed plate 140 may be provided. In particular, the bed may comprise: the bed frame 110, the second movable bed plate 130, the third movable bed plate 140, the third link 230, the second driving mechanism 320, and the fourth link 240.

The second movable bed board 130 has a first side and a second side opposite to each other in the first direction X, and the first side is rotatably connected to the bed frame 110; the first direction X is a longitudinal direction of the bed frame 110. The third movable couch plate 140 is rotatably connected to the second side of the second movable couch plate 130. The third link 230 has a fifth end 231 and a sixth end 232 disposed opposite to each other, and the fifth end 231 is rotatably connected to the second movable bed plate 130. The second driving mechanism 320 is disposed on the bed frame 110 and is drivingly connected to the sixth end 232. The fourth link 240 has a seventh end 241 and an eighth end 242 disposed opposite to each other, the seventh end 241 being rotatably connected to the third movable bed plate 140, and the eighth end 242 being rotatably connected to the bed frame 110.

The bed frame 110 is provided with a bed plate supporting surface. The second driving mechanism 320 can drive the sixth end 232 to move towards the first direction X, so as to drive the second movable bed board 130 to rotate along with the third connecting rod 230 around the second direction Y, so that the second movable bed board 130 is attached to or detached from the bed board supporting surface; the second direction Y is a width direction of the bed frame 110.

The second movable bed board 130 can drive the fourth connecting rod 240 to rotate along with the third movable bed board 140, so that the third movable bed board 140 is attached to or separated from the bed board supporting surface. In the case that the second movable bed plate 130 is separated from the bed plate supporting surface, the third movable bed plate 140 is separated from the bed plate supporting surface, the third link 230 is supported on the second movable bed plate 130, and the fourth link 240 is supported between the third movable bed plate 140 and the bed frame 110.

As described above, the lifting of the second movable bed plate 130 and the third movable bed plate 140 can be used for supporting the legs of the user. The double-connecting-rod support is adopted, so that the stress of the connecting rod is more reasonable and the connecting rod is not easy to damage.

Meanwhile, the included angle between the third movable bed board 140 and the bed board supporting surface is smaller than the included angle between the second movable bed board 130 and the bed board supporting surface, namely, the third movable bed board 140 always keeps a state approximately parallel to the horizontal plane when lifted, and the legs of a user can be supported more comfortably.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (14)

1. A bed, comprising:

a bed frame (110);

a first movable bed board (120) rotatably connected to the bed frame (110);

a first link (210) having oppositely disposed first and second ends (211, 212), the first end (211) rotatably coupled to the frame (110);

a second link (220) having a third end (221) and a fourth end (222) disposed opposite each other, the third end (221) rotatably coupled to the first link (210) and located between the first end (211) and the second end (212);

a first driving mechanism (310) arranged on the bed frame (110) and connected with the fourth end (222) in a driving way; the first driving mechanism (310) can drive the fourth end (222) to move towards a first direction (X) so as to drive the first connecting rod (210) to rotate along with the second connecting rod (220) around a second direction (Y); the first direction (X) is the length direction of the bedstead (110), and the second direction (Y) is the width direction of the bedstead (110); the bed frame (110) is provided with a bed board supporting surface facing the first movable bed board (120);

Under the condition that the first connecting rod (210) rotates, the first movable bed board (120) can rotate around the second direction (Y) along with the first connecting rod (210) so as to be attached to or separated from the bed board supporting surface;

under the condition that the first movable bed plate (120) is separated from the bed plate supporting surface, the second end portion (212) is in contact with the first movable bed plate (120), the first connecting rod (210) is supported and arranged between the first movable bed plate (120) and the bed frame (110), the second connecting rod (220) is supported on the first connecting rod (210), and an included angle is formed between the first connecting rod (210) and the second connecting rod (220).

2. The bed according to claim 1, further comprising a first rail (510), the first rail (510) being provided to the bed frame (110);

the fourth end part (222) is movably arranged on the first guide rail (510) and is in guiding fit with the first guide rail (510) towards the first direction (X);

the second link (220) is supported between the first link (210) and the first rail (510) with the first movable bed plate (120) separated from the bed plate support surface.

3. The bed of claim 2, further comprising a first roller (610), the first roller (610) rotatably disposed at the fourth end (222) and movably disposed at the first rail (510);

The fourth end (222) is guided into engagement with the first guide rail (510) by the first roller (610) in the first direction (X).

4. The bed of claim 1, further comprising a second roller (620), the second roller (620) being rotatably disposed at the second end (212);

the first link (210) is in contact with the first movable bed board (120) through the second roller (620) with the first movable bed board (120) separated from the bed board supporting surface.

5. The bed of claim 1, further comprising a first drive shaft (410), wherein the first drive mechanism (310) is drivingly connected to the first drive shaft (410);

the first connecting rods (210) and the second connecting rods (220) are in one-to-one correspondence to form connecting rod driving groups, the connecting rod driving groups are arranged in two groups towards the second direction (Y), and the first driving mechanism (310) and the first driving shaft (410) are both positioned between the two groups of connecting rod driving groups;

the first driving mechanism (310) is respectively connected with the fourth ends (222) in the two connecting rod driving groups through the first driving shaft (410),

the first driving mechanism (310) can drive the fourth end (222) to move along with the first driving shaft (410) towards the first direction (X).

6. The bed as set forth in claim 5, wherein the first drive mechanism (310) includes:

a first motor (311);

a first screw (312) in driving connection with the first motor (311), the length direction of the first screw (312) being identical to the first direction (X);

the first screw sleeve (313) is sleeved on the first screw rod (312) and is in screw transmission fit with the first screw rod (312); the first screw sleeve (313) is connected with the first driving shaft (410);

the first motor (311) can drive the first screw sleeve (313) to move along with the first screw rod (312) towards the first direction (X); the first screw sleeve (313) can drive the fourth end (222) to move along with the first driving shaft (410) towards the first direction (X).

7. The bed as set forth in claim 6, wherein the first drive mechanism (310) further comprises a first housing (314),

the first housing (314) is arranged on the bedstead (110),

the first housing (314) is hollow, the first motor (311), the first screw (312) and the first screw sleeve (313) are all arranged in the first housing (314),

the first housing (314) is provided with a guide groove (317), a first part of the first driving shaft (410) is arranged on the first housing (314), and a second part of the first driving shaft (410) extends out of the first housing (314) through the guide groove (317) so as to be connected with the second connecting rod (220).

8. The bed as set forth in claim 7, wherein the first housing (314) has oppositely disposed first and second side walls defining a rail cavity (318) therebetween,

the first screw sleeve (313) is movably arranged in the guide rail cavity (318) and is in guide fit with the guide rail cavity (318) along the first direction (X).

9. The bed as set forth in claim 6, wherein the first drive mechanism (310) further includes: a first worm wheel (315) and a first worm (316), wherein the first worm wheel (315) is arranged on the first screw (312),

the first worm (316) is in driving connection with the first motor (311) and is in transmission fit with the first worm wheel (315),

the first motor (311) can drive the first worm (316) to rotate, and the first worm (316) can drive the first screw (312) to rotate along with the first worm wheel (315), so that the first screw sleeve (313) moves along with the first screw (312) towards the first direction (X).

10. The bed of claim 1, further comprising:

the first movable bed plate (120) and the second movable bed plate (130) are sequentially arranged towards a first direction (X); one side of the second movable bed board (130) facing the first movable bed board (120) is rotatably connected with the bed frame (110), and one side of the first movable bed board (120) facing the second movable bed board (130) is rotatably connected with the bed frame (110);

A third link (230) having a fifth end (231) and a sixth end (232) disposed opposite each other, the fifth end (231) rotatably connecting the second movable bed plate (130);

a second driving mechanism (320) disposed on the bed frame (110) and drivingly connected to the sixth end (232);

the second driving mechanism (320) can drive the sixth end (232) to move towards the first direction (X) so as to drive the second movable bed board (130) to rotate along with the third connecting rod (230) around the second direction (Y), so that the second movable bed board (130) is attached to or detached from the bed board supporting surface;

the third link (230) is supported by the second movable bed plate (130) with the second movable bed plate (130) separated from the bed plate support surface.

11. The bed of claim 10, further comprising a third movable couch plate (140) and a fourth link (240),

the first movable bed board (120), the second movable bed board (130) and the third movable bed board (140) are sequentially arranged towards the first direction (X), and two opposite sides of the second movable bed board (130) are respectively and rotatably connected with the bed frame (110) and the third movable bed board (140);

The fourth connecting rod (240) is provided with a seventh end part (241) and an eighth end part (242) which are oppositely arranged, the seventh end part (241) is rotatably connected with the third movable bed board (140), and the eighth end part (242) is rotatably connected with the bed frame (110);

under the condition that the second movable bed board (130) rotates, the second movable bed board (130) can drive the fourth connecting rod (240) to rotate along with the third movable bed board (140) so as to enable the third movable bed board (140) to be attached to or separated from the bed board supporting surface;

under the condition that the third movable bed plate (140) is separated from the bed plate supporting surface, the fourth connecting rod (240) is supported between the third movable bed plate (140) and the bed frame (110), and the included angle between the third movable bed plate (140) and the bed plate supporting surface is smaller than the included angle between the second movable bed plate (130) and the bed plate supporting surface.

12. The bed of claim 10, further comprising a second rail (520) and a third roller (630), wherein the second rail (520) is provided to the frame (110),

the third roller (630) is rotatably arranged at the sixth end part (232) and movably arranged on the second guide rail (520), and the third roller (630) is in guiding fit with the second guide rail (520) towards the first direction (X);

The third link (230) is supported between the second movable bed plate (130) and the second guide rail (520) with the second movable bed plate (130) separated from the bed plate support surface.

13. The bed of claim 10, further comprising a second drive shaft (420), wherein the second drive mechanism (320) is drivingly connected to the second drive shaft (420);

the third connecting rods (230) are arranged in two in the second direction (Y), and the second driving mechanism (320) and the second driving shaft (420) are positioned between the two third connecting rods (230);

the second driving mechanism (320) is respectively connected with the two third connecting rods (230) through the second driving shaft (420), and the second driving mechanism (320) can drive the second driving shaft (420) to move so as to drive the sixth end part (232) to move towards the first direction (X).

14. A bed, comprising:

a bed frame (110);

a second movable bed plate (130) having a first side and a second side disposed opposite to each other in a first direction (X), the first side being rotatably connected to the bed frame (110); the first direction (X) is the length direction of the bed frame (110);

a third movable couch plate (140) rotatably connected to a second side of the second movable couch plate (130);

A third link (230) having a fifth end (231) and a sixth end (232) disposed opposite each other, the fifth end (231) rotatably connecting the second movable bed plate (130);

a second driving mechanism (320) disposed on the bed frame (110) and drivingly connected to the sixth end (232);

a fourth link (240) having a seventh end (241) and an eighth end (242) disposed opposite each other, the seventh end (241) rotatably coupled to the third movable bed plate (140), the eighth end (242) rotatably coupled to the bed frame (110);

the bed frame (110) is provided with a bed board supporting surface;

the second driving mechanism (320) can drive the sixth end (232) to move towards the first direction (X) so as to drive the second movable bed board (130) to rotate along with the third connecting rod (230) around the second direction (Y), so that the second movable bed board (130) is attached to or detached from the bed board supporting surface; the second direction (Y) is the width direction of the bedstead (110);

the second movable bed board (130) can drive the fourth connecting rod (240) to rotate along with the third movable bed board (140) so as to enable the third movable bed board (140) to be attached to or detached from the bed board supporting surface;

under the condition that the second movable bed plate (130) is separated from the bed plate supporting surface, the third movable bed plate (140) is separated from the bed plate supporting surface, the third connecting rod (230) is supported on the second movable bed plate (130), and the fourth connecting rod (240) is supported between the third movable bed plate (140) and the bed frame (110).

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