CN116392338B

CN116392338B - Automatic docking and separating device and docking method for nursing bed and chair

Info

Publication number: CN116392338B
Application number: CN202310622784.0A
Authority: CN
Inventors: 赵景波; 赵翎辛
Original assignee: Tianjin Tongye Machine Manufacturing Co ltd
Current assignee: Tianjin Tongye Machine Manufacturing Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2025-11-07
Anticipated expiration: 2043-05-30
Also published as: CN116392338A

Abstract

This invention discloses an automatic docking and separating device and method for a nursing bed and chair. The device includes a bed and a wheelchair. One side of the bed's longitudinal center plane is a docking and separating area, and the other side is a turning and expansion area. The wheelchair can rotate laterally in the docking and separating area and separate from the bed. The wheelchair achieves positional transformation from a lying position to a semi-reclining position and then to a sitting position through a rotation mechanism, a leg bending linkage mechanism, and a backrest lifting drive mechanism. The docking and separating of the bed and wheelchair are completed by turning the docking and separating device on and off. The wheelchair's positional transformation function can only be performed when the contact-type power device is on. A wheelchair travel detection device is provided on the support frame to control the wheelchair's positional transformation by detecting the wheelchair's translational travel. Compared with the prior art, this invention can ensure the safety of the equipment, extend its service life, and provide stable support to ensure the stability of the wheelchair during rotation.

Description

Automatic docking and separating device and docking method for nursing bed and chair

Technical Field

The invention relates to the technical field of nursing equipment, in particular to an automatic docking and separating device and a docking method for nursing bed chairs.

Background

As the population aging problem becomes more serious, the disabled and semi-disabled elderly are more and more in the elderly population, and the medical and senior problems of the elderly are urgently needed to be solved. The traditional medical care mode requires a large number of nursing staff and medical resources, and cannot meet the requirements of home care. An auxiliary nursing device with higher intelligent degree and capable of meeting household nursing requirements of old people is urgently needed in the market.

The existing multifunctional nursing bed has two types of separable bed chairs and inseparable bed chairs on the main stream, such as a separable bed chair integrated robot provided by patent application number 202111365860.1, and the technical scheme can lighten the strength of nursing staff to a certain extent, but has the defects that 1, an electromagnetic lock is attracted by magnetic force due to the working principle, so when a wheelchair and a bed body are required to be separated, a magnet main body and an attraction plate are still not separated due to attraction force, the male end and the female end of a contact type power-on device are in a virtual connection state, the equipment cannot be normally used due to long time, the equipment cannot be damaged due to light weight, even short circuit is easy to burn, and the safety is insufficient. 2. The wheelchair is rotated by the crank connecting rod transmission mechanism of the push rod shaft III and the push rod shaft IV, and the transmission mechanism is easy to slip due to bearing part of the weight of the wheelchair and the old, so that the rotation action is unstable or discontinuous, and the safety is also insufficient.

Disclosure of Invention

The invention aims to provide an automatic docking and separating device and a docking method for nursing bed chairs, which can avoid a virtual connection state, ensure the safety of equipment, prolong the service life, provide stable supporting force and ensure the stability of the wheelchair in the rotating process.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the automatic docking and separating device for the nursing bed and chair comprises a bed body and a wheelchair, wherein one side of the longitudinal center plane of the bed body is a docking and separating area, the other side of the longitudinal center plane of the bed body is a turning-over and expanding area, the wheelchair can laterally rotate in the docking and separating area and is separated from the bed body, the wheelchair comprises a supporting plate, a supporting base, a rotating mechanism, a curved leg linkage mechanism, a back lifting driving mechanism and an armrest device, the wheelchair realizes the pose conversion from a lying mode to a semi-lying mode to a sitting mode through the rotating mechanism, the curved leg linkage mechanism and the back lifting driving mechanism, and the armrest device realizes the opening and the retracting of the armrest;

the bed body comprises a support frame, an electric cabinet, a guard plate device, a butt joint separation device and a contact type electrifying device, the bed body and a wheelchair finish the butt joint and separation of the bed and the chair through the on-off electricity of the butt joint separation device, and the position and posture conversion function of the wheelchair can only be carried out under the on-state of the contact type electrifying device;

The support frame is provided with a travel detection device, and the position and posture conversion of the wheelchair is controlled by detecting the translation travel of the wheelchair.

Compared with the mode of adopting the electromagnetic lock, the motor lock can not lead to the male end and the female end of the contact type power-on device to be in the virtual connection state, thereby ensuring the safety of equipment and prolonging the service life.

The docking and separating device comprises a docking guide rail and a docking mounting plate in sliding connection with the docking guide rail, wherein the docking guide rail is fixedly arranged on a support frame, a motor lock is arranged on one side of the docking mounting plate, which faces away from the wheelchair, a lock ring matched with the motor lock is arranged on one side of the support base, which faces towards the bed body, the support frame is provided with a first electric push rod, one end of the first electric push rod is hinged with the support frame, and the other end of the first electric push rod is hinged with the docking mounting plate;

The bed chair is abutted and separated through locking and unlocking of the motor lock and the lock ring, and the abutting mounting plate is driven by the first electric push rod to move along the abutting guide rail, so that the wheelchair is pushed to translate along the width direction of the bed body.

The travel detection device comprises a first travel switch, a second travel switch and a third travel switch which are fixedly arranged on the support frame, wherein the first travel switch, the second travel switch and the third travel switch are sequentially arranged along the width direction of the bed body and are electrically connected with the electric cabinet, a position indication table is arranged on the butt joint mounting plate, and the first travel switch, the second travel switch and the third travel switch are used for detecting the translation distance of the position indication table.

The support plate is further arranged to comprise a back plate, a hip plate, a thigh plate, a shank plate and a foot plate, wherein one side of the hip plate is hinged with the back plate, the other side of the hip plate is hinged with the thigh plate, one side of the shank plate is hinged with the thigh plate, and the other side of the shank plate is hinged with the foot plate.

The rotary mechanism comprises a rotary support, a support tube and a gear motor, wherein the rotary support is fixed below the hip plate, the support tube and the gear motor are fixed inside a support base, the top of the support tube is rotationally connected with a transmission gear fixedly connected with the rotary support through a bearing, and an output shaft of the gear motor is fixedly provided with a driving gear meshed with the transmission gear.

Compared with the mode of adopting crank link mechanism to drive the wheelchair to rotate, the rigidity of stay tube is bigger, can provide more stable holding power, and gear drive mechanism is relatively more stable, has guaranteed the stability of wheelchair rotation process, has guaranteed the safety in utilization.

The back lifting driving mechanism comprises a second electric push rod, one end of the second electric push rod is hinged to the rotary support, and the other end of the second electric push rod is hinged to the middle of the backboard.

The leg bending linkage mechanism comprises a third electric push rod, a first connecting rod and a second connecting rod, wherein one side, close to a thigh plate, of the shank plate is hinged with a leg bending connecting plate, one end of the third electric push rod is hinged with a rotary support, the other end of the third electric push rod is hinged with a Qu Tui connecting plate, a chute is fixedly arranged in the middle of the thigh plate, a roller is mounted on the third electric push rod and is in sliding connection with the chute, one end of the first connecting rod is connected with the thigh plate, the other end of the first connecting rod is hinged with the second connecting rod, and the second connecting rod is hinged with a foot plate.

The lifting device is further arranged in a manner that the lifting device comprises a first lifting guard plate arranged in a butt joint separation area, a first guard plate track connected with the first lifting guard plate in a sliding mode, a second lifting guard plate arranged in a turn-over capacity expansion area, and a second guard plate track connected with the second lifting guard plate in a sliding mode, lock catches are arranged at the bottoms of the first lifting guard plate and the second lifting guard plate, clamping grooves matched with the lock catches are respectively arranged at the upper end and the lower end of the first guard plate track and the lower end of the second guard plate track, the first lifting guard plate and the second lifting guard plate are clamped in the clamping grooves through the lock catches, and a fourth travel switch is arranged at the bottom of the first guard plate track and used for detecting whether the first lifting guard plate descends to the bottom end of the guard plate track.

The armrest device comprises an armrest and a hinge, wherein the hinge is fixed on one side of the back plate, the armrest is rotatably connected to the hinge, a fifth travel switch is arranged on the back plate and used for detecting whether the armrest is retracted on the back side of the back plate.

When the wheelchair is in a sitting position, if the fourth travel switch detects that the first lifting guard plate is lowered to the bottom end of the first guard plate track and the fifth travel switch detects that the armrests are retracted to the rear side of the back plate, the speed reducing motor can drive the wheelchair to rotate, and if the fourth travel switch detects that the first lifting guard plate is not lowered to the bottom end of the first guard plate track and/or the fifth travel switch detects that the armrests are not retracted to the rear side of the back plate, the speed reducing motor cannot drive the wheelchair to rotate, so that the use safety is further ensured.

The invention also discloses a docking method of the automatic docking and separating device of the nursing bed and chair, which comprises the following steps:

S1, returning the wheelchair to the position by a nursing staff when the bed and chair are in a separated state, enabling the contact type electrifying device to be in an electrifying state, detecting a position indication table by a third travel switch, and enabling the motor lock and the lock ring to be in a locking state;

S1, when the bed and chair are in a separated state, a nursing staff inserts a lock ring into a lock hole, and simultaneously inserts a male end into a female end to reset the wheelchair, at the moment, the contact type electrifying device is in an electrified state, a third travel switch detects a position indication table, and a motor lock and the lock ring are in a locking state;

s2, detecting the position of a first lifting guard plate by a fourth travel switch, and entering the next step if the first lifting guard plate is lowered to the bottom end of a first guard plate track;

S3, detecting the position of the handrail by a fifth travel switch, and if the handrail is retracted at the rear side of the backboard, entering the next step;

s4, the first electric push rod pushes the wheelchair to translate inwards along the width direction of the bed body, when the second travel switch detects the position indication table, the second electric push rod pushes the backboard to be lowered, and the third electric push rod drives the thigh board, the shank board and the foot board to be raised upwards, so that the wheelchair is in a semi-lying position;

s5, driving the rotary support and the support plate to rotate 90 degrees clockwise by a speed reducing motor, wherein the back plate and the foot plate of the wheelchair face to the head of a bed and the tail of the bed respectively;

S6, the first electric push rod pushes the wheelchair to continuously translate inwards along the width direction of the bed body, when the first travel switch detects the position indication table, the second electric push rod pushes the backboard to be reduced to be parallel to the ground, the third electric push rod drives the thigh plate, the shank plate and the foot plate to be reduced to be parallel to the ground, and the wheelchair returns to an initial state.

Compared with the prior art, the invention has the beneficial technical effects that:

1. compared with the electromagnetic lock mode, the motor lock does not cause the male end and the female end of the contact type power-on device to be in a virtual connection state, so that the safety of equipment is ensured, and the service life is prolonged.

2. Compared with the mode of adopting crank link mechanism to drive the wheelchair to rotate, the rigidity of stay tube is bigger, can provide more stable holding power, and gear drive mechanism is relatively more stable, has guaranteed the stability of wheelchair rotation process, has guaranteed the safety in utilization.

3. The fourth travel switch detects whether the first lifting guard plate descends to the bottom end of the guard plate track, if the first lifting guard plate does not descend to the bottom end of the guard plate track, the gear motor cannot drive the supporting plate of the wheelchair to rotate, interference with the first lifting guard plate in the rotating process of the wheelchair can be avoided, collision is avoided, the fifth travel switch detects whether the handrail is retracted at the rear side of the back plate, when the handrail is not retracted at the rear side of the back plate, the gear motor cannot drive the supporting plate of the wheelchair to rotate, interference collision between the handrail and the bed body in the rotating process of the wheelchair can be avoided, equipment can be protected on one hand, accidental injury of old people can be prevented on the other hand, and use safety is further improved.

4. The position and posture conversion of the wheelchair is controlled by detecting the translation stroke of the wheelchair, and the functions of separating the one-key bed and chair and resetting the one-key bed and chair are realized in an auxiliary manner.

Drawings

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

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a top view of the bed of the present invention, wherein the mattress is not shown;

FIG. 3 is an isometric view of a bed according to the present invention;

FIG. 4 is a second perspective view of the bed according to the present invention;

FIG. 5 is an enlarged schematic view of portion A of FIG. 3;

FIG. 6 is a schematic view of a wheelchair in a lying position;

FIG. 7 is a schematic view of a wheelchair in a semi-reclined position;

FIG. 8 is a schematic structural view of a support plate and leg bending linkage;

FIG. 9 is a schematic view of a wheelchair in a sitting position;

fig. 10 is a schematic structural view of the rotating mechanism.

Reference numeral 100, a bed body; 101, a supporting frame; 102, an electric cabinet; 103, mattress, 104, roller bed, 110, docking and disengaging gear, 111, docking guide rail, 112, docking mounting plate, 113, motor lock, 114, lock ring, 115, first electric push rod, 116, docking slide, 117, position indication table, 120, contact type energizing device, 121, spring striker, 122, metal contact, 130, travel detecting device, 131, first travel switch, 132, second travel switch, 133, third travel switch, 140, apron device, 141, first lifting apron, 142, first apron rail, 143, second lifting apron, 144, second apron rail, 145, lock catch, 146, fourth travel switch, 200, wheelchair, 201, support base, 210, rotating mechanism, 211, rotating support, 212, support tube, 213, reducing motor, 214, drive gear, 215, driving gear, 220, curved leg linkage, 221, third electric push rod, 222, first link, 223, second link, 224, curved leg connecting plate, 225, chute, 226, stop collar, 230, lifting drive mechanism, 231, second electric push rod, 241, lock catch, 146, fourth travel switch, 200, wheelchair, 201, support base, 210, rotating mechanism, 211, rotating support base, 212, support tube, 213, decelerating motor, 214, drive gear, 220, curved leg linkage, 221, third electric push rod, 222, first link, 223, second link, 224, curved leg connecting plate, 225, chute, 226, limit ring, 230, lifting leg, 230, driving mechanism, 231, second electric drive mechanism, 241, support plate, 240, support plate, and support plate, and support plate.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 10, the automatic docking and separating device for nursing bed and chair disclosed by the invention comprises a bed body 100 and a wheelchair 200, wherein one side of the bed body 100 on a longitudinal center plane 301 is a docking and separating area, and the other side is a turning-over expanding area, wherein the wheelchair 200 can laterally rotate in the docking and separating area and is separated from the bed body 100. The wheelchair 200 comprises a supporting plate 250, a supporting base 201, a rotating mechanism 210, a leg bending linkage mechanism 220, a back lifting driving mechanism 230 and an armrest 241 device 240, wherein the wheelchair 200 realizes the pose conversion from lying to semi-lying to sitting through the rotating mechanism 210, the leg bending linkage mechanism 220 and the back lifting driving mechanism 230, and the armrest device 240 can realize the opening and the retraction of the armrest 241.

Referring to fig. 1 and 2, the bed body 100 includes a supporting frame 101, an electric cabinet 102, a guard plate device 140, a docking and separation device 110, and a contact type power-on device 120, the docking and separation of the bed and chair is completed by the on-off of the docking and separation device 110 by the bed body 100 and the wheelchair 200, and the posture conversion function of the wheelchair 200 can only be performed in the on state of the contact type power-on device 120.

Referring to fig. 2 to 5, the docking and separating apparatus 110 includes docking guide rails 111 and docking mounting plates 112 slidably connected thereto, and preferably, the docking guide rails 111 are provided in two, and the two docking guide rails 111 are symmetrically disposed at both sides of the wheelchair 200 and fixedly disposed on the support frame 101, and the length direction of the docking guide rails 111 is parallel to the width direction 302 of the bed 100. The two ends of the docking mounting plate 112 in the length direction are respectively provided with a docking slider 116, and the docking sliders 116 are in sliding fit with the docking guide rails 111, so that the docking mounting plate 112 can slide along the docking guide rails 111. The electric motor lock 113 is installed on the side of the docking mounting plate 112 facing away from the wheelchair 200, the lock ring 114 (shown in fig. 9) matched with the electric motor lock 113 is installed on the side of the supporting base 201 facing toward the bed body 100, and a lock hole matched with the lock ring 114 is formed in the docking mounting plate 112, and the shape of the lock hole can be elliptical, square, waist-shaped and the like, which is not limited herein. The support frame 101 is provided with a first electric push rod 115, one end of the first electric push rod 115 is hinged with the support frame 101, and the other end is hinged with the butt joint mounting plate 112.

The docking and separation of the bed chair is realized by locking and unlocking the motor lock 113 and the lock ring 114, and the docking mounting plate 112 can be pushed to move along the docking guide rail 111 by the first electric push rod 115, so that the wheelchair 200 is pushed to translate outwards along the width direction 302 of the bed body 100.

In some embodiments, the support frame 101 may further be provided with roller tables 104, where two roller tables 104 are respectively connected with two sides of the support base 201 in a rolling manner, so as to play a guiding role on the wheelchair 200, and when the bed and chair are needed to be combined, it is convenient for a nursing staff to push the wheelchair 200 back to the docking and separation area to align the locking ring 114 with the locking hole.

Referring to fig. 4 and 9, the contact type energizing device 120 includes a male end and a female end adapted thereto, the male end is provided with a spring striker 121, the female end is provided with a metal contact 122, the male end is fixed to a support base 201 of the wheelchair 200, and the female end is fixed to a middle portion of the docking mounting plate 112. The number of the motor locks 113 is preferably two, and the two motor locks 113 are respectively and symmetrically arranged at two sides of the female end. When the wheelchair 200 is coupled to the bed 100, the male and female ends of the contact type energizing device 120 are engaged, the spring striker 121 contacts the metal contact 122, and the wheelchair 200 is energized.

Referring to fig. 6 and 7, the support plate 250 includes a back plate 251, a hip plate 252, a thigh plate 253, a shank plate 254, and a foot plate 255, one side of the hip plate 252 is hinged with the back plate 251, the other side is hinged with the thigh plate 253, one side of the shank plate 254 is hinged with the thigh plate 253, and the other side is hinged with the foot plate 255. The back plate 251 may also be provided with a handle 270 at its upper end at the rear side thereof, the handle 270 facilitating the caregiver to push the wheelchair 200 when the wheelchair 200 is rotated into a sitting position.

Referring to fig. 10, the rotation mechanism 210 includes a rotation support 211, a support tube 212 and a reduction motor 213, the rotation support 211 is fixed below the hip plate 252, the support tube 212 and the reduction motor 213 are fixed inside the support base 201, the top of the support tube 212 is rotatably connected with a transmission gear 214 through a bearing, the transmission gear 214 is fixedly connected with the rotation support 211 through a bolt, and an output shaft of the reduction motor 213 is fixed with a driving gear 215 engaged with the transmission gear 214. The gear motor 213 is electrically connected with the electric cabinet 102, and when the wheelchair 200 needs to be rotated, the gear motor 213 drives the driving gear 215 to rotate, and the rotation support 211 and the support plate 250 are driven to rotate through the transmission action of the driving gear 215 and the driven gear.

Referring to fig. 9, the back lifting driving mechanism 230 includes a second electric push rod 231, one end of the second electric push rod 231 is hinged to the rotating support 211, and the other end is hinged to the middle of the back plate 251. Preferably, the second electric push rod 231 is located at the middle of the back plate 251.

Referring to fig. 8, the leg bending linkage 220 includes a third electric push rod 221, a first link 222 and a second link 223, a leg bending connection plate 224 is hinged to one side of the lower leg plate 254 near the thigh plate 253 at the middle thereof, one end of the third electric push rod 221 is hinged to the rotation support 211, and the other end is hinged to the Qu Tui connection plate 224. The middle part of thigh board 253 is fixedly provided with spout 225, installs the gyro wheel on the third electric putter 221, gyro wheel and spout 225 sliding connection. Preferably, the bottom of the chute 225 may be fixedly connected with a limiting ring 226, and the third electric push rod 221 passes through a limiting space formed by the limiting ring 226 and the chute 225, so as to prevent the third electric push rod 221 from sliding out of the chute 225 during operation. One end of the first link 222 is connected to the thigh plate 253, the other end is hinged to the second link 223, the cross section of the second link 223 is in an "L" shape, and one end of the second link 223 remote from the first link 222 is hinged to the foot plate 255.

The second electric push rod 231 and the third electric push rod 221 are electrically connected with the electric cabinet 102, when the back bending leg is required to be lifted, the second electric push rod 231 and the third electric push rod 221 synchronously act, the second electric push rod 231 pushes the back plate 251 to rotate and lift, the third electric push rod 221 drives the thigh plate 253, the calf plate 254 and the foot plate 255 to lift, at the moment, the wheelchair 200 is in a semi-lying position, then the second electric push rod 231 and the third electric push rod 221 continue to act, the back plate 251 continues to lift, meanwhile, the rollers continue to roll along the sliding grooves 225, the calf plate 254 is inclined downwards to form a proper angle with the thigh plate 253 under the linkage action of the bending leg connecting plate 224 and the calf plate 254 and the linkage action of the first connecting rod 222 and the second connecting rod 223, at the moment, the wheelchair 200 is in a sitting position, the back bending leg action is assisted by the old man, and the inclination angles of the back plate 251, the thigh plate 253 and the calf plate 254 accord with the ergonomics.

Referring to fig. 9, the armrest apparatus 240 includes an armrest 241 and a hinge 242, the hinge 242 is fixed to one side of the back plate 251, and the armrest 241 is rotatably coupled to the hinge 242 through a rotation shaft. The nursing staff rotates the armrest 241 along the horizontal direction and then rotates the armrest 241 along the vertical direction, so that the armrest 241 can be unfolded, the old can conveniently use, the armrest 241 is rotatably stored at the rear side of the back plate 251, and the armrest 241 can not interfere with the bed body 100 when the wheelchair 200 is converted from the lying posture to the sitting posture. The back plate 251 is provided with a fifth travel switch 243, the fifth travel switch 243 is electrically connected to the electric cabinet 102, and the fifth travel switch 243 is used for detecting whether the armrest 241 is retracted to the back side of the back plate 251. When the armrest 241 is not retracted to the rear side of the back plate 251, the gear motor 213 cannot drive the support plate 250 of the wheelchair 200 to rotate, so as to prevent the armrest 241 from interfering with the bed 100 during rotation of the wheelchair 200, thereby protecting equipment and preventing the elderly from being injured by accident.

Referring to fig. 2, a stroke detection device 130 is provided on the support frame 101, and the posture conversion of the wheelchair 200 is controlled by the detected wheelchair translation stroke.

The travel detection device 130 comprises a first travel switch 131, a second travel switch 132 and a third travel switch 133 which are fixedly arranged on the support frame 101, wherein the first travel switch 131, the second travel switch 132 and the third travel switch 133 are sequentially arranged along the width direction 302 of the bed body and are electrically connected with the electric cabinet 102, the docking mounting plate 112 is provided with a position indication table 117, and the first travel switch 131, the second travel switch 132 and the third travel switch 133 are used for detecting the translation distance of the position indication table 117.

In the initial state, the first travel switch 131 is opposite to the position indication table 117, and the distance between the first travel switch 131 and the second travel switch 132 is greater than 1/2 of the width of the back plate 251, so that the support plate 250 of the wheelchair 200 does not interfere with the support frame 101 of the bed 100 when rotating.

Referring to fig. 3, the guard plate device 140 includes a first lifting guard plate 141 disposed in the docking and separation area and a first guard plate track 142 slidably connected with the first lifting guard plate, and a second lifting guard plate 143 disposed in the turn-over expansion area and a second guard plate track 144 slidably connected with the second lifting guard plate, wherein a latch 145 is disposed at the bottoms of the first lifting guard plate 141 and the second lifting guard plate 143, and a latch slot matched with the latch 145 is disposed at the upper and lower ends of the first guard plate track 142 and the second guard plate track 144, respectively, and the first lifting guard plate 141 and the second lifting guard plate 143 are clamped in the latch slot by the latch 145. Preferably, two first lifting guard plates 141 are provided, located near the head and tail of the bed, respectively. In some embodiments, the first lifting guard 141 and the second lifting guard 143 are provided with through grooves, which can save light weight and cost, and is convenient for personnel to operate.

The bottom of the first guard board track 142 is provided with a fourth travel switch 146, the fourth travel switch 146 is electrically connected to the electric cabinet 102, and the fourth travel switch 146 is used for detecting whether the first lifting guard board 141 descends to the bottom end of the guard board track. If the first lifting guard 141 is not lowered to the bottom end of the guard rail, the speed reducing motor 213 cannot drive the support plate 250 of the wheelchair 200 to rotate, so as to prevent the support plate 250 from interfering with the first lifting guard 141 during rotation.

Referring to fig. 1, in some embodiments, a mattress 103 is laid on a bed body 100, a support pad 260 is provided on a support plate 250 of a wheelchair 200, the support pad 260 is preferably sewn by a plurality of flexible pads, the positions of the flexible pads correspond to the positions of the constituent plates of the support plate 250, the sizes of the flexible pads are equal to the sizes of the constituent plates of the support plate 250, and the mattress 103 and the support pad 260 are made of flexible materials and have a certain thickness, so that the comfort of the old is ensured.

The working principle of the automatic docking and separating device 110 of the nursing bed chair is as follows:

In the initial state, the flexible pads of the mattress 103 and the support pad 260 have no angle change and are parallel to the ground, the support plate 250 is parallel to the ground, the motor lock 113 device is in the working state, and the bed body 100 is electrified to the wheelchair 200 through the contact type electrifying device 120.

When the old people need to sit down on the bed, the electric cabinet 102 controls the second electric push rod 231 and the third electric push rod 221 to synchronously act, the second electric push rod 231 pushes the back plate 251 to rotate and lift, the third electric push rod 221 drives the thigh plate 253, the shank plate 254 and the foot plate 255 to lift, and the wheelchair 200 is in a semi-lying position.

Then, the first electric push rod 115 is controlled to act to push the wheelchair 200 to translate outwards for a certain distance along the width direction 302 of the bed, when the second travel switch 132 detects the position indication table 117, the electric cabinet 102 controls the gear motor 213 to drive the driving gear 215 to rotate, and the rotating support and the supporting plate 250 are driven to rotate 90 degrees anticlockwise under the transmission action of the driving gear 215 and the driven gear, at this time, the back plate 251 of the wheelchair 200 faces inwards and the foot plate 255 faces outwards. Then, the second electric push rod 231 and the third electric push rod 221 are controlled to continue to act, the back plate 251 continues to be lifted to 75 degrees, meanwhile, the rollers continue to roll along the sliding grooves 225, under the linkage action of the curved leg connecting plate 224 and the lower leg plate 254 and the linkage action of the first connecting rod 222 and the second connecting rod 223, the lower leg plate 254 is inclined downwards to form a proper angle with the thigh plate 253, at the moment, the wheelchair 200 is in a sitting position, the back lifting curved leg action is completed for assisting the old, the included angle between the thigh plate 253 and the horizontal plane is 12 degrees, and the inclination angles of the back plate 251, the thigh plate 253 and the lower leg plate 254 accord with the ergonomics.

The wheelchair 200 may be brought into a bed-chair separated state when in a sitting position. The first electric push rod 115 is controlled to push the wheelchair 200 to continuously translate outwards along the width direction 302 of the bed body, when the third travel switch 133 detects the position indication table 117, the motor lock 113 is powered off, the motor lock 113 and the lock ring 114 are in an unlocking state, the nursing staff pulls out the wheelchair 200 along the direction of the roller table 104, and the male end and the female end of the contact type energizing device 120 are in non-contact so as to stop energizing.

After the bed-chair separation state is completed, the bed-chair can be in a butt joint state. The wheelchair 200 is reset by the caregiver inserting the locking ring 114 into the locking hole while the male end is inserted into the female end, at which point the contact energization device 120 begins to power the wheelchair 200. The third travel switch 133 detects the position indication table 117, the motor lock 113 is energized, and the motor lock 113 and the lock ring 114 are in the locked state.

The electric cabinet 102 controls the first electric push rod 115 to push the wheelchair 200 to translate inwards along the width direction 302 of the bed, when the second travel switch 132 detects the position indication table 117, the electric cabinet 102 controls the second electric push rod 231 to push the back plate 251 to lower by a proper angle, and the third electric push rod 221 drives the thigh plate 253, the shank plate 254 and the foot plate 255 to raise by a proper angle, so that the wheelchair 200 is in a semi-lying position. Then, the gear motor 213 drives the driving gear 215 to rotate, and drives the rotating support 211 and the supporting plate 250 to rotate 90 ° clockwise under the transmission action of the driving gear 215 and the driven gear, and at this time, the back plate 251 and the foot plate 255 of the wheelchair 200 face to the head and the tail of the bed, respectively. The electric cabinet 102 then controls the first electric push rod 115 to push the wheelchair 200 to continue to translate inwardly along the bed width direction 302.

When the first travel switch 131 detects the position indication table 117, the electric cabinet 102 controls the second electric push rod 231 to push the back plate 251 to be lowered to be parallel to the ground, and the third electric push rod 221 drives the thigh plate 253, the calf plate 254 and the foot plate 255 to be lowered to be parallel to the ground, so that the wheelchair 200 returns to the initial state.

The electric cabinet 102 is internally provided with a communication module, the electric cabinet 102 is connected with an external controller through the communication module in a communication mode, the communication connection mode comprises an infrared remote control mode, a wireless remote control mode and the like, and the external controller comprises electronic components such as an infrared remote control mode and a mobile phone mode, so that the functions of separating a bed chair by one key, resetting the bed chair by one key, lifting back, bending legs and the like are realized through the modes such as buttons and touch control.

When the wheelchair 200 is in the sitting position, if the fourth travel switch 146 detects that the first lifting guard 141 has fallen to the bottom end of the first guard rail 142 and the fifth travel switch 243 detects that the armrest 241 has been retracted to the rear side of the back plate 251, the gear motor 213 can drive the wheelchair 200 to rotate, and if the fourth travel switch 146 detects that the first lifting guard 141 has not fallen to the bottom end of the first guard rail 142 and/or the fifth travel switch 243 detects that the armrest 241 has not been retracted to the rear side of the back plate 251, the gear motor 213 cannot drive the wheelchair 200 to rotate, i.e. the one-button separation or one-button reset function cannot be implemented.

The invention also discloses a docking method of the automatic docking and separating device of the nursing bed chair, which comprises the following steps:

S1, when the bed and chair are in a separated state, a nursing staff inserts the lock ring 114 into the lock hole, and simultaneously inserts the male end into the female end to reset the wheelchair 200, at the moment, the contact type energizing device 120 is in an energized state, the third travel switch 133 detects that the position indication table 117, and the motor lock 113 and the lock ring 114 are in a locking state;

s2, detecting the position of the first lifting guard plate 141 by a fourth travel switch 146, and entering the next step if the first lifting guard plate 141 is lowered to the bottom end of the first guard plate rail 142;

S3, detecting the position of the armrest 241 by a fifth travel switch 243, and if the armrest 241 is retracted to the rear side of the back plate 251, entering the next step;

S4, the first electric push rod 115 pushes the wheelchair 200 to translate inwards along the width direction 302 of the bed body, when the second travel switch 132 detects the position indication table 117, the second electric push rod 231 pushes the back plate 251 to lower, and the third electric push rod 221 drives the thigh plate 253, the shank plate 254 and the foot plate 255 to lift upwards, so that the wheelchair 200 is in a semi-lying position;

s5, driving the rotary support 211 and the supporting plate 250 to rotate 90 degrees clockwise by the driving of the gear motor 213, wherein the back plate 251 and the foot plate 255 of the wheelchair 200 face to the head of the bed and the tail of the bed respectively;

S6, the first electric push rod 115 pushes the wheelchair 200 to continuously translate inwards along the width direction 302 of the bed body, when the first travel switch 131 detects the position indication table 117, the second electric push rod 231 pushes the backboard 251 to be lowered to be parallel to the ground, and the third electric push rod 221 drives the thigh plate 253, the shank plate 254 and the foot plate 255 to be lowered to be parallel to the ground, so that the wheelchair 200 returns to an initial state.

It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.

Claims

1. An automatic docking and separating device for a nursing bed and chair, comprising a bed (100) and a wheelchair (200), wherein the bed (100) has a docking and separating area on one side of its longitudinal center plane (301) and a turning and expansion area on the other side, wherein the wheelchair (200) can rotate laterally in the docking and separating area and separate from the bed (100), characterized in that,

The wheelchair (200) includes a support plate (250), a support base (201), a rotating mechanism (210), a leg bending linkage mechanism (220), a back lift drive mechanism (230), and an armrest device (240). The wheelchair (200) can switch between a lying position, a semi-reclining position, and a sitting position through the rotating mechanism (210), the leg bending linkage mechanism (220), and the back lift drive mechanism (230). The armrest device (240) can open and retract the armrests (241).

The bed (100) includes a support frame (101), an electrical control box (102), a guard plate device (140), a docking and separating device (110), and a contact-type power supply device (120). The bed (100) and the wheelchair (200) are docked and separated by turning the power on and off of the docking and separating device (110). The posture conversion function of the wheelchair (200) can only be performed when the contact-type power supply device (120) is on.

The support frame (101) is equipped with a stroke detection device (130), which controls the position and posture transformation of the wheelchair (200) by detecting the translation stroke of the wheelchair (200);

The docking separation device (110) includes a docking guide rail (111) and a docking mounting plate (112) slidably connected thereto. The docking guide rail (111) is fixedly mounted on the support frame (101). A motor lock (113) is mounted on the side of the docking mounting plate (112) facing away from the wheelchair (200). A locking ring (114) matching the motor lock (113) is mounted on the side of the support base (201) facing the bed (100). The support frame (101) has... A first electric push rod (115) is provided. One end of the first electric push rod (115) is hinged to the support frame (101), and the other end is hinged to the docking mounting plate (112). The docking and separation of the bed and chair are realized by locking and unlocking the motor lock (113) and the locking ring (114). The docking mounting plate (112) is driven to move along the docking guide rail (111) by the first electric push rod (115), thereby pushing the wheelchair (200) to move horizontally along the width direction (302) of the bed.

2. The automatic docking and separation device for nursing beds and chairs according to claim 1, characterized in that the travel detection device includes a first travel switch (131), a second travel switch (132) and a third travel switch (133) fixed on the support frame (101), the first travel switch (131), the second travel switch (132) and the third travel switch (133) are arranged sequentially along the width direction (302) of the bed and are all electrically connected to the electrical control box (102), and a position indicator platform (117) is provided on the docking mounting plate (112), the first travel switch (131), the second travel switch (132) and the third travel switch (133) are used to detect the translation distance of the position indicator platform (117).

3. The automatic docking and separation device for nursing beds and chairs according to claim 1, characterized in that the support plate (250) includes a back plate (251), a buttock plate (252), a thigh plate (253), a calf plate (254) and a foot plate (255), one side of the buttock plate (252) is hinged to the back plate (251) and the other side is hinged to the thigh plate (253), one side of the calf plate (254) is hinged to the thigh plate (253) and the other side is hinged to the foot plate (255).

4. The automatic docking and separation device for nursing beds and chairs according to claim 3, characterized in that the rotating mechanism (210) includes a rotating support, a support tube (212) and a reduction motor (213), the rotating support is fixed below the buttock plate (252), the support tube (212) and the reduction motor (213) are fixed inside the support base (201), the top of the support tube (212) is rotatably connected to a transmission gear (214) fixedly connected to the rotating support, and the output shaft of the reduction motor (213) is fixed with an active gear (215) meshing with the transmission gear (214).

5. The automatic docking and separation device for nursing beds and chairs according to claim 3, characterized in that the backrest lifting drive mechanism (230) includes a second electric push rod (231), one end of the second electric push rod (231) is hinged to the rotating support (211), and the other end is hinged to the middle of the back plate (251).

6. The automatic docking and separation device for nursing beds and chairs according to claim 3, characterized in that the leg-bending linkage mechanism (220) includes a third electric push rod (221), a first connecting rod (222) and a second connecting rod (223), the lower leg plate (254) is hinged to the side of the thigh plate (253) with a leg-bending connecting plate (224), one end of the third electric push rod (221) is hinged to the rotating support (211), and the other end is hinged to the leg-bending connecting plate (224); a sliding groove (225) is fixedly provided in the middle of the thigh plate (253), a roller is installed on the third electric push rod (221), and the roller and the sliding groove (225) are slidably connected; one end of the first connecting rod (222) is connected to the thigh plate (253), and the other end is hinged to the second connecting rod (223), and the second connecting rod (223) is hinged to the foot plate (255).

7. The automatic docking and separation device for nursing beds and chairs according to claim 1, characterized in that the guard plate device (140) includes a first lifting guard plate (141) disposed in the docking and separation area and a first guard plate track (142) slidably connected thereto, and a second lifting guard plate (143) disposed in the turning and expansion area and a second guard plate track (144) slidably connected thereto, the bottom of the first lifting guard plate (141) and the second lifting guard plate (143) is provided with a buckle (145), the upper and lower ends of the first guard plate track (142) and the second guard plate track (144) are respectively provided with a slot matching the buckle (145), the first lifting guard plate (141) and the second lifting guard plate (143) are fastened in the slot by the buckle (145); the bottom of the first guard plate track (142) is provided with a fourth limit switch (146), the fourth limit switch (146) is used to detect whether the first lifting guard plate (141) has descended to the bottom of the guard plate track.

8. The automatic docking and separation device for nursing chairs according to claim 1, characterized in that the armrest device (240) includes an armrest (241) and a hinge (242), the hinge (242) is fixed to one side of the back panel (251), the armrest (241) is rotatably connected to the hinge (242), and a fifth limit switch (243) is provided on the back panel (251), the fifth limit switch (243) is used to detect whether the armrest (241) is retracted to the back of the back panel (251).

9. A docking method for an automatic docking and separating device for nursing beds and chairs, applied to the automatic docking and separating device for nursing beds and chairs as described in any one of claims 1-8, characterized in that it includes the following steps:

S1. When the bed and chair are separated, the caregiver puts the wheelchair (200) back in place, the contact power supply device (120) is powered on, the third limit switch (133) detects the position indicator (117), and the motor lock (113) and the locking ring (114) are locked.

S1. When the bed and chair are separated, the caregiver inserts the locking ring (114) into the lock hole and inserts the male end into the female end to put the wheelchair (200) back in place. At this time, the contact power-on device (120) is in the power-on state, the third limit switch (133) detects the position indicator (117), and the motor lock (113) and locking ring (114) are in the locked state.

S2. The fourth limit switch (146) detects the position of the first lifting guard plate (141). If the first lifting guard plate (141) has descended to the bottom of the first guard plate track (142), then proceed to the next step.

S3. The fifth limit switch (243) detects the position of the armrest (241). If the armrest (241) has been retracted to the back panel (251), proceed to the next step.

S4. The first electric push rod (115) pushes the wheelchair (200) to move inward along the width direction (302) of the bed. When the second limit switch (132) detects the position indicator (117), the second electric push rod (231) pushes the back panel (251) to lower, and the third electric push rod (221) drives the thigh board (253), lower leg board (254) and footboard (255) to rise. At this time, the wheelchair (200) is in a semi-reclining position.

S5. Then the geared motor (213) drives the rotating support (211) and the support plate (250) to rotate 90° clockwise. At this time, the back panel (251) and footboard (255) of the wheelchair (200) face the head and foot of the bed respectively.

S6. The first electric push rod (115) pushes the wheelchair (200) to continue to move inward along the width direction (302) of the bed. When the first limit switch (131) detects the position indicator (117), the second electric push rod (231) pushes the back panel (251) to lower to be parallel to the ground. The third electric push rod (221) drives the thigh board (253), lower leg board (254) and footboard (255) to lower to be parallel to the ground, and the wheelchair (200) returns to the initial state.