CN113796687B - Seat leg oblique folding device, seat support and seat unit - Google Patents
Seat leg oblique folding device, seat support and seat unit Download PDFInfo
- Publication number
- CN113796687B CN113796687B CN202110949721.7A CN202110949721A CN113796687B CN 113796687 B CN113796687 B CN 113796687B CN 202110949721 A CN202110949721 A CN 202110949721A CN 113796687 B CN113796687 B CN 113796687B
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- seat
- frame
- leg
- assembly
- hinged
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- 238000009434 installation Methods 0.000 claims abstract description 35
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 108010084652 homeobox protein PITX1 Proteins 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs
- A47C7/506—Supports for the feet or the legs of adjustable type
- A47C7/5066—Supports for the feet or the legs of adjustable type by rotation
- A47C7/5068—Supports for the feet or the legs of adjustable type by rotation actuated by linkages
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention relates to a seat leg oblique folding device, a seat support and a seat unit, which comprise leg assemblies hinged at the front end of a seat frame installation frame, wherein an installation platform is arranged at the inner side of the seat frame installation frame, the height of the installation platform is lower than the upper edge of the seat frame installation frame, and the plane of the installation platform is a seat frame installation surface; the leg rest driving rod and the leg rest linkage rod of the leg part assembly are respectively hinged with the front end of the seat frame installation frame, one end of the first leg rest connecting rod is hinged with the leg rest driving rod, the other end of the first leg rest connecting rod is hinged with the end part of the leg rest, one end of the second leg rest connecting rod is hinged with the leg rest linkage rod, and the other end of the second leg rest connecting rod is hinged with the middle part of the leg rest; the footrest includes a footrest mounting surface for mounting the footrest, the footrest mounting surface retracting below the seat frame mounting surface and tilting relative to a horizontal plane when the leg assembly is retracted to the extreme position. The front soft package of the seat is thinner in appearance, increases the bottom space, and can be used for the seat style with high support legs.
Description
Technical Field
The invention relates to the technical field of sofa supports, in particular to a seat leg oblique folding device, a seat support and a seat unit.
Background
With the improvement of living standard of people, functional sofas and seats are more and more common in life. As functional seats include lounges, armchairs, sofas, combination seats, cinema seats and seating units with moving seats. The functional seat with the telescopic device can be adjusted among the sitting position, the leisure position and the lying position through the telescopic device.
The existing seating units have the following drawbacks: when the seat is designed into a high-support low-seat high seat style, the foot rest of the leg assembly is easy to rub against the ground, so that the use of a user is affected; the space at the bottom of the seat frame is narrow and difficult to clean; in the retracted sitting position, the footrest of the leg assembly is retracted in front of the seat, making the seat front soft pack heavy, aesthetically bad, and the calf cannot be tilted under the seat in the sitting position. Therefore, it is necessary to provide a seat support structure for a high-leg seat based on the prior art, in which the thickness of the front of the seat is thinner, and a larger space is provided below the seat frame, so as to satisfy the seat style of the high-leg seat.
Disclosure of Invention
In view of the foregoing problems of the prior art, it is an object of the present invention to provide a leg reclining device, a seat support, and a seat unit, which can reduce the vertical height of the front surface of a seat after retraction by adjusting the structure of a seat frame mounting frame and leg assembly, and which can be seen thinner, while increasing the space of the bottom of the seat frame, so that the height of the legs can be increased and the cleaning of the bottom can be facilitated.
In order to solve the above problems, the present invention provides a leg reclining device of a seat, including a leg assembly hinged to a front end of a seat frame mounting frame;
the leg assembly comprises a leg rest driving rod, a leg rest linkage rod, a first leg rest connecting rod, a second leg rest connecting rod and a leg rest piece, wherein the leg rest driving rod and the leg rest linkage rod are respectively hinged with the front end of the seat frame mounting frame, one end of the first leg rest connecting rod is hinged with the leg rest driving rod, the other end of the first leg rest connecting rod is hinged with the end part of the leg rest piece, one end of the second leg rest connecting rod is hinged with the leg rest linkage rod, and the other end of the second leg rest connecting rod is hinged with the middle part of the leg rest piece;
the foot rest includes a footrest mounting surface for mounting a foot rest, the footrest mounting surface retracting to below the seat frame mounting bracket and tilting relative to a horizontal plane when the leg assembly is retracted to a limit position.
Further, when the leg assembly is retracted to an extreme position, the footrest mounting surface is at an angle of 20 ° -26 ° to the horizontal.
Further, a distance from a connection point of the second foot rest link and the foot rest to the footrest mounting surface is smaller than a distance from a connection point of the first foot rest link and the foot rest to the footrest mounting surface.
Further, a limiting piece is arranged at one end, close to the foot rest, of the first foot rest connecting rod.
Further, a first limiting surface matched with the limiting piece is arranged on the second leg rest connecting rod, and when the first limiting surface is in contact with the limiting piece, the current position of the leg assembly is the limit position of the leg assembly stretching.
Further, a second limiting surface matched with the limiting piece is arranged on the lower edge of the foot rest, and when the second limiting surface is in contact with the limiting piece, the current position of the leg assembly is the limit position of the leg assembly in shrinkage.
The invention also provides a seat support, which comprises a seat frame mounting frame, a seat linkage assembly, a driving connecting piece and the leg oblique folding device, wherein the seat linkage assembly is rotationally connected below the seat frame mounting frame, and the driving connecting piece is connected with the seat linkage assembly; the inner side of the seat frame installation frame is provided with an installation platform, the height of the installation platform is lower than the upper edge of the seat frame installation frame, and the plane where the installation platform is located is a seat frame installation surface;
when the seat support is contracted to the limit position, the distance H1 between the highest point of the seat frame mounting frame on the seat frame mounting surface and the lowest point of the driving connecting piece in the vertical direction is not more than 270mm.
Further, when the seat support is retracted to the limit position, a distance H2 between a highest point of the seat frame mounting frame on the seat frame mounting surface and a highest point of the footrest mounting surface in a vertical direction is not more than 50mm.
Further, the seat linkage assembly includes a leg link, through which the seat linkage assembly is connected with the leg assembly.
Further, the seat linkage assembly further comprises a seat frame linkage assembly, wherein the seat frame linkage assembly comprises a first connecting frame rod, a middle connecting frame rod and a second connecting frame rod which are sequentially hinged;
the first connecting frame rod and the second connecting frame rod are respectively hinged with the seat frame installation frame, the first connecting frame rod, the middle connecting frame rod, the second connecting frame rod and the seat frame installation frame form a quadrilateral connecting rod mechanism, and the middle connecting frame rod is hinged with the leg connecting rods.
Further, the seat linkage assembly also comprises a side plate linkage assembly, wherein the side plate linkage assembly comprises a mounting side plate and a translation connecting rod assembly, and the translation connecting rod assembly is hinged between the seat frame linkage assembly and the mounting side plate.
Further, the translation link assembly comprises a first connecting rod, a second connecting rod, a first rocker, a first intermediate rod, a second intermediate rod and a second rocker;
one end of the first connecting rod is hinged with the first rocker, the other end of the first connecting rod is hinged with the middle linkage rod, one end of the second connecting rod is hinged with the second rocker, and the other end of the second connecting rod is hinged with the middle linkage rod;
the first rocker and the second rocker are respectively hinged to the front end and the middle of the installation side plate, and the first middle rod and the second middle rod are hinged between the first rocker and the second rocker.
Further, the novel backrest comprises a backrest assembly, wherein the backrest assembly comprises a backrest mounting part, a seat frame connecting part, a backrest connecting part and a backrest limiting part;
the middle part of the seat frame connecting part is fixedly connected with the seat frame mounting frame, two ends of the seat frame connecting part are respectively hinged with the backrest mounting part and the backrest limiting part, one end of the backrest connecting part is hinged with the middle part of the backrest mounting part, the other end of the backrest connecting part is hinged with the backrest limiting part, and the backrest limiting part is hinged with the rear end of the mounting side plate through a connecting rod;
and when the seat frame connecting part and the seat frame mounting frame move obliquely forwards and upwards, the backrest limiting part and the backrest connecting part drive the backrest mounting part to rotate backwards.
The invention also provides a seat unit which comprises two groups of seat supports and a fixing cross rod, wherein the seat supports are oppositely arranged, the driving assembly comprises a driving cross rod and a fixing cross rod, the driving cross rod is arranged between the two opposite leg assemblies, the fixing cross rod is connected between the two opposite mounting side plates through a fixing piece, the driving cross rod is used for being connected with a push rod of a driving source, and the driving cross rod drives the seat supports to move between a sitting position and a lying position.
Further, the device also comprises a seat frame and two armrest frames; the two seat supports are fixedly connected with the inner side faces of the two armrest frames respectively, and the seat frames are arranged between the two seat frame installation frames through the installation platforms.
Further, the foot rest comprises a foot rest plate, the foot rest plate is fixedly connected with the foot rest plate mounting surface, and the length L of the foot rest plate is not less than 200mm.
Further, the armrest frame also comprises seat legs which are arranged below the armrest frame, and the height of the seat legs is 120-150mm.
Due to the technical scheme, the invention has the following beneficial effects:
the seat frame mounting platform is arranged at the lower edge of the inner wall of the seat frame mounting frame, so that the seat frame can be sunk between the seat frame mounting frames at two sides, and the seat depth is increased.
The leg component is simple and compact in structure, the foot rest can be completely and obliquely received at the bottom of the seat frame, and the seat frame and the foot rest are obliquely folded and combined, so that the size of the seat frame and the leg component in the vertical direction is smaller when in a sitting posture state, the thickness of the seat is thinner when the front surface looks, and the bottom space of the seat frame is increased, so that the seat frame is convenient to clean.
The seat frame mounting frame and the leg assembly are vertically compressed after the seat support is contracted, so that occupied space after contraction is reduced as much as possible, and the seat frame mounting frame can be used for a seat style with high support legs and low seat height.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a seat support according to an embodiment of the present invention;
FIG. 2 is a schematic view of an extended configuration of a seat support according to an embodiment of the present invention;
FIG. 3 is a schematic view of a reclining configuration of a seat support according to an embodiment of the present invention;
FIG. 4 is a schematic view of a side plate linkage assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of the seat frame during extension of the seat frame according to the embodiment of the present invention;
FIG. 6 is a front view of a seating unit in accordance with an embodiment of the present invention;
fig. 7 is a side view of a seating unit in accordance with an embodiment of the present invention.
Wherein, the reference numerals are as follows: 10-seat support, 1-seat frame mounting, 11-mounting platform, 111-seat frame mounting, 2-leg assembly, 21-foot rest drive bar, 22-foot rest link, 23-first foot rest link, 231-stop, 24-second foot rest link, 241-first stop face, 25-foot rest, 251-foot rest mounting, 252-second stop face, 3-seat linkage assembly, 31-leg link, 32-seat frame linkage assembly, 321-first frame bar, 322-intermediate link, 323-second frame bar, 33-side plate linkage assembly, 331-mounting side plate, 332-translation link assembly, 333-first link, 334-second link, 335-first rocker, 336-first intermediate bar, 337-second intermediate bar, 338-second rocker, 4-seat frame, 5-armrest frame, 6-foot rest, 7-seat support leg, 8-back assembly, 81-mounting, 82-seat frame connection, 83-back connection, 84-back connection, 85-drive link, 85-stop link.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. 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.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be 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.
Examples
The seat of the embodiment can be adjusted among sitting posture, stretching posture and lying posture positions, the seat is adjusted from the sitting posture to the stretching posture to be in a first adjusting stage, and the seat is adjusted from the stretching posture to the lying posture to be in a second adjusting stage. In a first adjustment phase, the seat back angle remains substantially unchanged and the leg assembly extends forward to an extreme position; during the second adjustment phase, the leg assembly and the seat frame are moved in an overall incline upward, the seat back is rotated rearward, and the angle between the back and the seat frame is increased until adjusted to the final reclined position.
As shown in fig. 1 and 2, the present embodiment provides a leg oblique-folding device for a seat, comprising a leg assembly 2 hinged at the front end of a seat frame mounting frame 1, wherein the leg assembly 2 comprises a leg rest driving rod 21, a leg rest linkage rod 22, a first leg rest connecting rod 23, a second leg rest connecting rod 24 and a leg rest 25, the leg rest driving rod 21 and the leg rest linkage rod 22 are respectively hinged with the front end of the seat frame mounting frame 1, one end of the first leg rest connecting rod 23 is hinged with the leg rest driving rod 21, the other end is hinged with the end part of the leg rest 25, one end of the second leg rest connecting rod 24 is hinged with the leg rest linkage rod 22, and the other end is hinged with the middle part of the leg rest 25;
the footrest 25 includes a footrest mounting surface 251 for mounting the footrest 6, and when the leg assembly 2 is retracted to the extreme position, the footrest mounting surface 251 is retracted below the seat frame mount 1 and inclined with respect to the horizontal plane. Specifically, when the leg assembly 2 is retracted to the extreme position, the footrest mounting surface 251 is angled 20 ° -26 ° from horizontal. Preferably, 20 °,23 °,25 ° or 26 °. The distance from the connecting point of the second foot rest connecting rod 24 and the foot rest 25 to the foot rest mounting surface 251 is smaller than the distance from the connecting point of the first foot rest connecting rod 23 and the foot rest 25 to the foot rest mounting surface 251, so that the foot rest 22 is inclined relative to the horizontal plane after being contracted, and the occupied space in the vertical direction of the leg oblique-folding device is reduced.
Specifically, the end of the first leg rest link 23 adjacent to the leg rest 25 is provided with a stopper 231. The second leg rest connecting rod 24 is provided with a first limiting surface 241 matched with the limiting piece 231, and when the first limiting surface 241 is in contact with the limiting piece 231, the current position of the leg assembly 2 is the extending limit position of the leg assembly 2. The lower edge of the foot rest 25 is provided with a second limiting surface 252 matched with the limiting piece 231, and when the second limiting surface 252 is in contact with the limiting piece 231, the current position of the leg assembly 2 is the limit position of the contraction of the leg assembly 2.
Specifically, the limiting member 231 is in contact with the first limiting surface 241 or the second limiting surface 252, so as to play a role in limiting and preventing the foot rest from being released. On one hand, the leg assembly can be limited to prevent the leg assembly from transitionally stretching or shrinking, so that the leg assembly cannot be smoothly retracted or stretched; on the other hand, the foot rest and the foot rest are prevented from being easily released without being contracted to the predetermined limit positions.
The foot rest is received the seat frame mounting bracket below to one side completely, compares in the normal leg structure of retrieving back foot rest vertically, and this application finished seat openly is lighter and thinner. The vertical height compression of shrink back seat frame mounting bracket 1 and shank subassembly 2 has reduced the space that occupies after the shrink as far as possible, promotes space utilization to make seat whole dress back seat frame lower part space increase, can make things convenient for cleaning device such as mop, robot clean, on the other hand can also inwards receive the shank to one side and place when sitting position, increase more position of sitting experience.
The embodiment also provides a seat support, which comprises a seat frame mounting frame 1, a seat linkage assembly 3, a driving connecting piece 9 and a leg oblique retraction device, wherein the seat linkage assembly 3 is rotationally connected below the seat frame mounting frame 1, and the driving connecting piece 9 is connected with the seat linkage assembly 3; the inner side of the seat frame mounting frame 1 is provided with a mounting platform 11, the height of the mounting platform 11 is lower than the upper edge of the seat frame mounting frame 1, and the plane where the mounting platform 11 is positioned is a seat frame mounting surface 111; as shown in fig. 1, when the seat support is retracted to the extreme position, the distance H1 in the vertical direction between the highest point on the seat frame mounting surface 111 and the lowest point of the drive link 9 is not more than 270mm, preferably 270mm, 260mm, 250mm, 230mm, 220mm or 200mm.
It should be noted that, in this embodiment, the number of the mounting platforms 11 may be plural, in which the mounting platforms 11 are disposed at the lower edge of the seat frame mounting frame 1, four mounting platforms 11 are disposed along the length direction of the seat frame mounting frame 1, and the seat frame may be fixedly mounted on the mounting platforms 11 by fasteners such as bolts, nuts or rivets. This mounting platform 11 highly reduces for the seat frame can sink the installation, increases the seat deeply, and under the circumstances that seat frame installation face reduced, can also make seat stabilizer blade height increase, seat frame lower part space increase, on the other hand also can make the soft package thickness of seat cushion increase, improve the comfort level.
Specifically, when the seat bracket 10 is retracted to the limit position, the distance H1 in the vertical direction between the highest point on the seat frame mounting surface 111 and the highest point of the footrest mounting surface 251 is not more than 50mm. Preferably, the distance H2 in the vertical direction between the highest point of the seat frame mounting surface 111 and the highest point of the footrest mounting surface 251 of the seat frame mounting frame 1 may be 50mm, 45mm, or 40mm. The smaller the distance H2, the smaller the thickness of the seat portion when the leg assembly is retracted as seen from the front of the seat.
Specifically, the seat link assembly 3 of the present embodiment includes a leg link 31, and the seat link assembly 3 is connected to the leg assembly 2 through the leg link 31.
Specifically, as shown in fig. 3, the seat linkage assembly 3 further includes a seat frame linkage assembly 32, and the seat frame linkage assembly 32 includes a first frame link 321, an intermediate link 322, and a second frame link 323 that are sequentially hinged; wherein, first linking frame pole 321 and second linking frame pole 323 are articulated with seat frame mounting bracket 1 respectively, and first linking frame pole 321, middle gangbar 322, second linking frame pole 323 and seat frame mounting bracket 1 form parallelogram link mechanism, and middle gangbar 322 articulates with linking leg pole 31. In this embodiment, during the first adjustment phase, the intermediate linkage rod 322 remains stationary and the bezel mounting bracket 1 translates forward with extension of the leg assembly 2 to full extension of the leg assembly 2 by rotation of the first and second frame links 321, 323.
Specifically, as shown in fig. 4, the seat link assembly 3 further includes a side plate link assembly 33, the side plate link assembly 33 including a mounting side plate 331 and a translating link assembly 332, the translating link assembly 332 being hinged between the seat frame link assembly 32 and the mounting side plate 331. In the second adjustment phase, the bezel linkage assembly 32 translates obliquely forward and upward through movement of the translating linkage assembly 332.
Specifically, the translating link assembly 332 includes a first connecting rod 333, a second connecting rod 334, a first rocker 335, a first intermediate rod 336, a second intermediate rod 337, and a second rocker 338; wherein, one end of the first connecting rod 333 is hinged with the first rocker 335, the other end is hinged with the middle linkage rod 322, one end of the second connecting rod 334 is hinged with the second rocker 338, and the other end is hinged with the middle linkage rod 322; the first and second rockers 335 and 338 are hinged at the front and middle portions of the mounting side plate 331, respectively, and the first and second intermediate bars 336 and 337 are hinged between the first and second rockers 335 and 338.
Specifically, the seat back assembly 8 is further included, the seat back assembly 8 is rotatably connected to one end of the seat frame mounting frame 1 away from the leg assembly 2, and the seat back assembly 8 is used for being connected with a seat back frame to adjust the back angle of the seat. The backrest assembly 8 includes a backrest mount 81, a seat frame connecting portion 82, a backrest connecting member 83, and a backrest stopper 84; the middle part of the seat frame connecting part 82 is fixedly connected with the seat frame mounting frame 1, two ends of the seat frame connecting part 82 are respectively hinged with the backrest mounting part 81 and the backrest limiting part 84, one end of the backrest connecting part 83 is hinged with the middle part of the backrest mounting part 81, the other end of the backrest connecting part is hinged with the backrest limiting part 84, and the backrest limiting part 84 is hinged with the rear end of the mounting side plate 331 through a connecting rod 85; when the seat frame connecting portion 82 moves obliquely upward with the seat frame mounting frame 1, the backrest limiting member 84 and the backrest connecting member 83 drive the backrest mounting member 81 to rotate backward.
In the present embodiment, in the first adjustment stage, the leg assembly 2 extends forward to drive the seat frame mounting frame 1 to move forward, the intermediate link rod 322 is fixed, and the first link rod 321 and the second link rod 323 rotate forward, so that the angle between the seat frame and the backrest remains unchanged; in the second adjustment stage, the leg unit 2, the seat frame mounting frame 1, and the seat frame linkage unit 32 are moved obliquely forward and upward as a whole, and at this time, the seat back is adjusted to be rotated rearward, and the angle between the back and the seat frame increases.
As shown in fig. 6 and 7, the present embodiment further provides a seat unit including a driving assembly and a seat support 10, the seat support 10 is provided in two groups and is disposed opposite to each other, the driving assembly includes a driving cross bar and a fixing cross bar, the driving cross bar is disposed between two opposite leg assemblies, the fixing cross bar is connected between two opposite mounting side plates 331 through a driving connection 9, the driving cross bar is used for being connected with a push rod of a driving source, and the driving cross bar drives the seat support 10 to move between a sitting position and a lying position.
Specifically, the driving assembly drives the leg assembly to extend through the driving cross rod, so that the seat frame installation frame, the seat linkage assembly 3 and the backrest assembly 8 are driven to move, and under the driving of the driving assembly, the seat unit can realize three positions of a sitting position, an extending position and a lying position, and the leg assembly and the backrest assembly are contracted to limit positions in the sitting position; when the seat is in the extended posture position, the leg components are extended forwards to the limit position, and the included angle between the backrest component and the seat frame is kept the same as the sitting posture position; when the chair is in the lying position, the leg telescopic assembly stretches to the limit position, and the backrest assembly rotates backwards to the limit position.
Specifically, the seat frame 4 and two armrest frames 5 are also included; the two seat brackets 10 are respectively fixedly connected with the inner side surfaces of the two armrest frames 5, and the seat frames 4 are arranged between the two seat frame installation frames 1 through the installation platforms 11. Specifically, two seat supports are mirror images and are arranged at intervals, and are fixed on the armrest frame 5 through the mounting side plates, the seat frame 4 is mounted on the mounting platform in a sinking mode, and the height of the mounting platform is lower than the upper edge of the seat frame mounting frame.
Specifically, as shown in fig. 5, the shoe-rest 6 is further included, the shoe-rest 6 is connected with the shoe-rest mounting surface 251 by a fastener, and the length L of the shoe-rest 6 is not less than 200mm. Since the footrest of the present embodiment can be received obliquely under the leg assembly 2, a longer footrest 6 can be installed. Preferably, the length L of the footrest 6 may be 200mm, 250mm, 260mm or 280mm, on the basis that the footrest does not interfere with the ground during extension and retraction of the leg assembly.
Specifically, the armrest frame 5 further comprises seat legs 7, wherein the seat legs 7 are arranged below the armrest frame 5, and the height of the seat legs 7 is 120-150mm. Preferably, the height of the seat foot may be 120mm, 130mm or 150mm. Compared with a seat unit using a traditional seat support, the seat support of the embodiment is higher in height, the traditional seat support is complex in structure, occupied space is large, the seat support is only about 5mm, and the lower part of the seat is not easy to clean.
The seat frame mounting platform of this application seat unit sets up the lower limb of seat frame mounting bracket inner wall for the seat frame can sink between the mounting frame of installation both sides seat frame, and the seat increases deeply. Leg components simple structure, compactness, foot rest can receive seat frame bottom to one side completely, and seat frame and leg components are smaller in vertical direction size in seat front end when making the position of sitting, and thickness is thinner after the soft package, has increased seat frame bottom space, makes the clearance of being convenient for. The seat frame mounting bracket and the leg assembly are compressed vertically after the seat support is contracted, the occupied space after contraction is reduced as much as possible, and the seat style requirement of high support leg low seat height is met.
In this application, the opposite side between the two opposing seat brackets, i.e., the two frame mounts, is the "inner" side and the opposite direction is the "outer" side. The leg assembly extends in a direction "front" and in an opposite direction "back".
The foregoing description has fully disclosed specific embodiments of this invention. It should be noted that any modifications to the specific embodiments of the invention may be made by those skilled in the art without departing from the scope of the invention as defined in the appended claims. Accordingly, the scope of the claims of the present invention is not limited to the foregoing detailed description.
Claims (16)
1. The seat support is characterized by comprising a seat frame mounting frame (1), a seat linkage assembly (3), a driving connecting piece (9) and a leg oblique folding device, wherein the seat linkage assembly (3) is rotationally connected below the seat frame mounting frame (1), and the driving connecting piece (9) is connected with the seat linkage assembly (3);
the seat linkage assembly (3) further comprises a side plate linkage assembly (33), the side plate linkage assembly (33) comprises a mounting side plate (331) and a translation link assembly (332), and the translation link assembly (332) is hinged between the seat frame linkage assembly (32) and the mounting side plate (331);
the translation link assembly (332) includes a first connecting rod (333), a second connecting rod (334), a first rocker (335), a first intermediate rod (336), a second intermediate rod (337), and a second rocker (338);
one end of the first connecting rod (333) is hinged with the first rocker (335), the other end of the first connecting rod is hinged with the middle linkage rod (322), one end of the second connecting rod (334) is hinged with the second rocker (338), and the other end of the second connecting rod is hinged with the middle linkage rod (322);
the first rocker (335) and the second rocker (338) are respectively hinged at the front end and the middle part of the mounting side plate (331), and the first middle rod (336) and the second middle rod (337) are hinged between the first rocker (335) and the second rocker (338);
the leg oblique folding device comprises a leg component (2) hinged at the front end of the seat frame mounting frame (1);
leg assembly (2) include foot rest actuating lever (21), foot rest trace (22), first foot rest connecting rod (23), second foot rest connecting rod (24) and foot rest (25), foot rest actuating lever (21) with foot rest trace (22) respectively with the front end of seat frame mounting bracket (1) articulated, first foot rest connecting rod (23) one end with foot rest actuating lever (21) articulated, the other end with the tip of foot rest (25) articulated, second foot rest connecting rod (24) one end with foot rest trace (22) articulated, the other end with the middle part of foot rest (25) articulated;
the foot rest (25) comprises a foot rest mounting surface (251) for mounting a foot rest (6);
the inner side of the seat frame installation frame (1) is provided with an installation platform (11), the height of the installation platform (11) is lower than the upper edge of the seat frame installation frame (1), and the plane where the installation platform (11) is located is a seat frame installation surface (111);
when the leg assembly (2) is contracted to the limit position, the footrest mounting surface (251) is contracted to the lower side of the seat frame mounting frame (1) and is inclined relative to the horizontal plane, and the distance H1 between the highest point of the seat frame mounting frame (1) on the seat frame mounting surface (111) and the lowest point of the driving connecting piece (9) in the vertical direction is not more than 50mm.
2. A seat support according to claim 1, characterized in that the distance H2 in the vertical direction between the highest point of the seat frame mounting bracket (1) on the seat frame mounting surface (111) and the highest point of the footrest mounting surface (251) is not more than 270mm when the seat support is retracted to the extreme position.
3. A seat support according to claim 1, characterized in that the seat linkage assembly (3) comprises a leg link (31), the seat linkage assembly (3) being connected to the leg assembly (2) by means of the leg link (31).
4. A seat support according to claim 3, wherein the seat linkage assembly (3) further comprises a seat frame linkage assembly (32), the seat frame linkage assembly (32) comprising a first frame link (321), an intermediate link (322) and a second frame link (323) hinged in sequence;
the first connecting frame rod (321) and the second connecting frame rod (323) are respectively hinged to the seat frame installation frame (1), the first connecting frame rod (321), the middle connecting frame rod (322), the second connecting frame rod (323) and the seat frame installation frame (1) form a quadrilateral connecting rod mechanism, and the middle connecting frame rod (322) is hinged to the leg connecting rod (31).
5. A seat support according to claim 4, wherein the seat linkage assembly (3) further comprises a side plate linkage assembly (33), the side plate linkage assembly (33) comprising a mounting side plate (331) and a translating link assembly (332), the translating link assembly (332) being hinged between the seat frame linkage assembly (32) and the mounting side plate (331).
6. The seat support according to claim 5, wherein the translating link assembly (332) comprises a first connecting rod (333), a second connecting rod (334), a first rocker (335), a first intermediate rod (336), a second intermediate rod (337) and a second rocker (338);
one end of the first connecting rod (333) is hinged with the first rocker (335), the other end of the first connecting rod is hinged with the middle linkage rod (322), one end of the second connecting rod (334) is hinged with the second rocker (338), and the other end of the second connecting rod is hinged with the middle linkage rod (322);
the first rocker (335) and the second rocker (338) are respectively hinged to the front end and the middle of the mounting side plate (331), and the first middle rod (336) and the second middle rod (337) are hinged between the first rocker (335) and the second rocker (338).
7. A seat support according to claim 1, further comprising a back assembly (8), the back assembly (8) comprising a back mount (81), a seat frame connection (82), a back connection (83) and a back stop (84);
the middle part of the seat frame connecting part (82) is fixedly connected with the seat frame mounting frame (1), two ends of the seat frame connecting part (82) are respectively hinged with the backrest mounting part (81) and the backrest limiting part (84), one end of the backrest connecting part (83) is hinged with the middle part of the backrest mounting part (81), the other end of the backrest connecting part is hinged with the backrest limiting part (84), and the backrest limiting part (84) is hinged with the rear end of the mounting side plate (331) through a connecting rod (85);
and when the seat frame connecting part (82) and the seat frame mounting frame (1) move forwards and upwards in an inclined way, the backrest limiting part (84) and the backrest connecting part (83) drive the backrest mounting part (81) to rotate backwards.
8. A seat support according to claim 1, characterized in that the footrest mounting surface (251) is at an angle of 20 ° -26 ° to the horizontal when the leg assembly (2) is retracted to an extreme position.
9. A seat support according to claim 1, characterized in that the distance from the connection point of the second foot rest link (24) to the foot rest (25) to the foot rest mounting surface (251) is smaller than the distance from the connection point of the first foot rest link (23) to the foot rest (25) to the foot rest mounting surface (251).
10. A seat support according to claim 1, characterized in that the end of the first leg rest link (23) adjacent to the leg rest (25) is provided with a stop (231).
11. A seat support according to claim 10, characterized in that the second leg rest link (24) is provided with a first stop surface (241) cooperating with the stop member (231), the current position of the leg assembly (2) being the extreme position in which the leg assembly (2) is extended when the first stop surface (241) abuts against the stop member (231).
12. A seat support according to claim 11, characterized in that the lower edge of the foot rest (25) is provided with a second stop surface (252) cooperating with the stop (231), the current position of the leg assembly (2) being the limit position in which the leg assembly (2) is contracted when the second stop surface (252) abuts against the stop (231).
13. A seating unit comprising a drive assembly and a seat support (10) according to any one of claims 1 to 12, the seat supports (10) being two sets and being arranged opposite each other, the drive assembly comprising a drive rail arranged between the opposite two leg assemblies and a fixed rail connected between the opposite two mounting side plates (331) by a drive connection (9), the drive rail being for connection with a push rod of a drive source, the drive rail driving the seat support (10) between a sitting position and a lying position.
14. A seating unit according to claim 13, further comprising a seat frame (4) and two armrest frames (5);
the two seat supports (10) are fixedly connected with the inner side faces of the two armrest frames (5) respectively, and the seat frames (4) are arranged between the two seat frame installation frames (1) through the installation platforms (11).
15. A seat unit according to claim 13, further comprising a footrest (6), the footrest (6) being fixedly connected to the footrest mounting surface (251), the length L of the footrest (6) being not less than 200mm.
16. A seat unit according to claim 14, further comprising a seat foot (7), said seat foot (7) being arranged below said armrest frame (5), said seat foot (7) having a height of 120-150mm.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949721.7A CN113796687B (en) | 2021-08-18 | 2021-08-18 | Seat leg oblique folding device, seat support and seat unit |
| EP22857245.9A EP4368066A4 (en) | 2021-08-18 | 2022-03-11 | Device for retracting an ischium into an angle, seat support and seat unit |
| PCT/CN2022/080372 WO2023019925A1 (en) | 2021-08-18 | 2022-03-11 | Device for retracting seat leg at angle, seat support, and seat unit |
| US18/427,856 US20240164527A1 (en) | 2021-08-18 | 2024-01-31 | Device for Retracting Seat Leg at Angle, Seat Support, and Seat Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949721.7A CN113796687B (en) | 2021-08-18 | 2021-08-18 | Seat leg oblique folding device, seat support and seat unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113796687A CN113796687A (en) | 2021-12-17 |
| CN113796687B true CN113796687B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110949721.7A Active CN113796687B (en) | 2021-08-18 | 2021-08-18 | Seat leg oblique folding device, seat support and seat unit |
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| Country | Link |
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| CN (1) | CN113796687B (en) |
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| EP4368066A4 (en) * | 2021-08-18 | 2025-03-12 | Remacro Machinery & Technology (Wujiang) Co., Ltd. | Device for retracting an ischium into an angle, seat support and seat unit |
| WO2023019926A1 (en) * | 2021-08-18 | 2023-02-23 | 锐迈机械科技（吴江）有限公司 | Contractible sofa linkage device, sofa support, and sofa |
| CN217644853U (en) | 2022-03-31 | 2022-10-25 | 锐迈科技股份有限公司 | Seat leg extension structure, extension support and seat unit |
| CN114794778B (en) * | 2022-04-21 | 2025-10-31 | 浙江锴创科技有限公司 | Stretching device and movable sofa |
| CN115177110A (en) * | 2022-08-09 | 2022-10-14 | 锐迈科技股份有限公司 | Adjusting device for seat unit and seat unit |
| CN116035378A (en) * | 2022-09-16 | 2023-05-02 | 锐迈科技股份有限公司 | Leg centering type support structure and seat support |
| CN218304166U (en) * | 2022-10-13 | 2023-01-17 | 德沃康科技集团有限公司 | Seat frame and sofa seat |
| CN221469489U (en) * | 2024-02-06 | 2024-08-06 | 德沃康科技集团有限公司 | Seat support and seat with same |
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