CN114698968A - Seat back linkage seat - Google Patents

Abstract

The invention discloses a seat back linkage seat, comprising: the handrail is an elastic component, the left side and the right side of the underframe are both provided with rotating supporting pieces, each rotating supporting piece is provided with a sliding groove extending along the front-back direction, a connecting pin is connected in the sliding groove in a sliding manner, and the underframe is provided with a bearing piece; the bottom surface of the cushion is connected with a supporting part which can slide back and forth, an elastic moving mechanism is arranged between the cushion and the supporting part, and the supporting part is provided with a clamping groove which is buckled on the bearing part; the backrest and the cushion are connected with the connecting pin in a rotating mode, and the two armrests are connected to the left side and the right side of the backrest respectively. When user's back inclines backward and switches to when relaxing the posture, the back can drive the cushion and carry out the forward movement along the spout, inclines forward and switches to when just sitting the posture when user's back, and elastic activity mechanism can drive the cushion and carry out the backward movement along the spout, and the user also need not to move the buttock in person again after switching different position of sitting, and user experience is better.

Description

Seat back linkage seat

Technical Field

The invention relates to the technical field of seats, in particular to a seat back linkage seat.

Background

The chair is an indispensable seat for people to work or rest, and plays a role in bearing the weight of people. Existing chairs are usually provided with a resiliently movable backrest, and the user adjusts the sitting posture by moving the backrest. When the user's back is tilted backward to switch to the relaxation posture, the user can slide forward the position of his buttocks to obtain better comfort, and thereafter, when the user's back is tilted forward to switch to the sitting posture, the user needs to reset the position of his buttocks. However, the position of the seat cushion of the existing seat is not adjustable, so that after the user switches back to the sitting posture, the user needs to move the hip backwards in person, and the user experience is poor.

Disclosure of Invention

The present invention is directed to a seat-back linkage seat, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.

According to the seat back linkage seat of the embodiment of the first aspect of the invention, the seat back linkage seat comprises:

the handrail is an elastic component, the left side and the right side of the underframe are both provided with rotating supporting pieces, each rotating supporting piece is provided with a sliding groove extending along the front-back direction, a connecting pin is connected in the sliding groove in a sliding manner, and the underframe is provided with a bearing piece;

the bottom surface of the cushion is movably connected with a supporting part, an elastic moving mechanism is arranged between the cushion and the supporting part, the supporting part is provided with a clamping groove extending along the left-right direction, and the clamping groove is buckled on the supporting part, so that the cushion can move back and forth relative to the underframe;

the backrest and the seat cushion are connected with the connecting pin in a rotating mode, and the two handrails are connected to the left side and the right side of the backrest respectively.

The seat back linkage seat provided by the embodiment of the invention at least has the following beneficial effects: when the user's back tilts backwards to switch to a relaxed posture, the backrest rotates backwards around the connecting pin under the pressure of the user's back, and the armrest is used for limiting the backward rotation angle of the backrest, because the backrest and the seat cushion are connected to the connecting pin in a rotating way together, and the connecting pin can slide forwards and backwards along the sliding groove, the backrest can push the connecting pin to move forwards along the sliding groove during backward rotation of the backrest, so that the seat cushion is driven to move forwards along the sliding groove, the position of the user's buttocks can be automatically adjusted forwards after switching to the relaxed posture, when the user's back tilts forwards to switch to the sitting posture, once the user removes the pressure on the backrest, the seat cushion can reset backwards along the sliding groove under the elastic force of the elastic moving mechanism, thereby drive the back resets, and meanwhile, the handrail also can the boosting the back resets for the user is after switching to positive position of sitting gesture, and the position of its buttock can be adjusted backward automatically, and user experience is better.

According to some embodiments of the invention, in order to achieve the elastic connection between the seat cushion and the support portion, the elastic moving mechanism includes a moving plate slidably connected to the seat cushion and elastic members respectively connected to the seat cushion and the moving plate, the elastic members provide elastic return for the relative movement between the seat cushion and the moving plate, and the support portion is fixedly connected to the moving plate.

According to some embodiments of the invention, the cushion is connected with at least two sliding parts, the movable plate is provided with a through groove and at least two sliding grooves, the cushion and the movable plate are in sliding connection through the mutual matching of the sliding parts and the sliding grooves, the elastic part is a tension spring, one end of the tension spring is fixedly connected to the cushion, and the other end of the tension spring passes through the through groove and is fixedly connected to the movable plate. When the cushion moves forwards relative to the supporting part, the tension spring is stretched and is in an elastic energy storage state, and once the external force on the cushion is removed, the tension spring immediately provides elastic force to realize the backward reset of the cushion.

According to some embodiments of the invention, in order to realize linkage of the seat cushion and the backrest, the left side surface and the right side surface of the seat cushion are respectively provided with a first rotating hole, the bottom of the backrest is provided with two connecting lugs, the two connecting lugs are respectively positioned at the left side and the right side of the seat cushion, each connecting lug is provided with a second rotating hole, and the first rotating hole and the second rotating hole are jointly and rotatably connected with the connecting pin.

According to some embodiments of the invention, in order to prevent the connecting lug from protruding out of the seat cushion, the seat cushion is provided with a clearance avoiding the connecting lug, so that the appearance of the seat-back linkage seat is beautified.

According to some embodiments of the invention, the left side surface and the right side surface of the backrest are respectively provided with a rotation limiting block, and the armrest is provided with a rotation limiting groove which performs limiting rotation with the rotation limiting block, so that a certain rotation allowance is reserved between the backrest and the armrest to buffer the instantaneous pressure of a user on the backrest, and the service life of the armrest is prolonged.

According to some embodiments of the invention, the rotation limiting block is provided with a screw hole, and the rotation limiting groove is communicated with a mounting hole corresponding to the screw hole, and at this time, a screw can be used to assemble the armrest and the backrest.

According to some embodiments of the present invention, the handrail is a nylon member or a polypropylene member because nylon and polypropylene have strong toughness.

According to some embodiments of the invention, the base frame is provided with four supporting legs, and the bottoms of all the supporting legs are connected with casters so as to move the seat-back linkage seat conveniently.

According to some embodiments of the invention, a net bag is arranged below the seat cushion, the net bag is detachably connected to the bottom frame, and the net bag is used for storing personal articles for a user.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a seat back linkage seat according to an embodiment of the present invention;

FIG. 2 is a front view of the seat back linkage seat shown in FIG. 1;

FIG. 3 is a side view of the seat back linkage seat shown in FIG. 1;

FIG. 4 is an exploded perspective view of the seat back linkage seat shown in FIG. 1;

FIG. 5 is a schematic perspective view of the seat cushion of the seatback-linked seat shown in FIG. 1 when stowed;

fig. 6 is a structural view of an elastic movable mechanism of an embodiment of the present invention.

In the drawings: 100-underframe, 200-cushion, 300-backrest, 110-first cross bar, 120-supporting foot, 400-armrest, 410-elbow, 130-rotating supporting piece, 131-sliding groove, 140-supporting piece, 141-second cross bar, 210-first rotating hole, 500-supporting part, 700-elastic moving mechanism, 510-clamping groove, 310-connecting lug, 220-avoiding space, 311-second rotating hole, 132-connecting pin, 133-limiting piece, 710-movable plate, 720-elastic piece, 230-sliding piece, 711-through groove, 712-sliding groove, 421-rotating limiting groove, 320-rotating limiting block, 321-screw hole, 420-mounting hole, 600-screw and 121-caster.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as up, down, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the invention, the meaning of a plurality of the terms is one or more, the meaning of a plurality of the terms is two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly defined, terms such as setup, installation, connection, and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention in combination with the detailed contents of the technical solutions.

As shown in fig. 1 to 3, a seat back linkage seat according to an embodiment of the first aspect of the present invention includes an underframe 100, a seat cushion 200 and a backrest 300, where the underframe 100 includes a first cross bar 110 and four support legs 120, the four support legs 120 are two front support legs 120 and two rear support legs 120, respectively, the two rear support legs 120 are spaced left and right, the first cross bar 110 is welded between the two rear support legs 120, the two front support legs 120 are both welded to the first cross bar 110, and the front support legs 120 are arranged to intersect with the rear support legs 120, so that the underframe 100 can be stably supported on the ground. An armrest 400 is mounted on the top of each of the two rear supporting legs 120, the armrest 400 is an elastic member, and may be made of high-toughness plastic such as nylon or polypropylene, and the armrest 400 is provided with an elbow 410, so that the armrest 400 can extend backward. It is understood that the bottom frame 100 may have other structures, such as a folding type, in which the front supporting legs 120 are hinged with the rear supporting legs 120, and is not limited to the above-mentioned embodiment.

As shown in fig. 4 and 5, in order to mount the seat cushion 200 and the backrest 300 on the base frame 100, the first cross bar 110 is provided with a rotation support 130 at both left and right sides thereof, the rotation support 130 is provided with a slide groove 131 extending in the front-rear direction, the base frame 100 is provided with a support member 140 in front of the rotation support 130, the support member 140 is welded to the first cross bar 110, and the support member 140 is provided with a second cross bar 141. The side all is equipped with first commentaries on classics hole 210 about the cushion 200, first commentaries on classics hole 210 is located the rear portion of cushion 200, the bottom surface swing joint of cushion 200 has supporting part 500, cushion 200 with elastic movement mechanism 700 is installed to the supporting part between 500, supporting part 500 is equipped with the draw-in groove 510 that extends along left right direction, draw-in groove 510 hasp is in second horizontal pole 141, this moment the cushion 200 by bearing piece 140 carries out the bearing, second horizontal pole 141 is used for the restriction the fore-and-aft position of supporting part 500 makes the cushion 200 can for chassis 100 carries out the back-and-forth movement. Two handrail 400 is connected respectively on both sides about back 300, just handrail 400's mounted position is located the middle part of back 300, the lower part of back 300 is equipped with two engaging lugs 310, two engaging lugs 310 are located respectively the left and right sides of cushion 200, cushion 200 be equipped with dodge in the spacing 220 of keeping away of engaging lug 310, two the engaging lug 310 all is equipped with the second and changes hole 311, first commentaries on classics hole 210, second commentaries on classics hole 311 and spout 131 are just right each other, sliding connection has connecting pin 132 in the spout 131, first commentaries on classics hole 210 with second commentaries on classics hole 311 rotates jointly connect in connecting pin 132, and the end-to-end connection of connecting pin 132 has locating part 133, in order to prevent dropping of connecting pin 132. Because the cushion 200 only rotates with the connecting pin 132 and is connected, the user can overturn the cushion 200 from top to bottom to realize the storage of the seat and back linkage seat, and the stored seat and back linkage seat can be stacked side by side more closely, thereby saving space. It will be appreciated that the chute 131 may be suitably inclined, but still tend to extend in the fore-and-aft direction as a whole.

As shown in fig. 6, specifically, the elastic moving mechanism 700 includes a moving plate 710 and an elastic member 720, the seat cushion 200 is connected with four sliding members 230, the moving plate 710 is provided with a through groove 711 and two sliding grooves 712, the seat cushion 200 and the moving plate 710 are slidably connected through the mutual matching of the sliding members 230 and the sliding grooves 712, every two sliding members 230 correspond to one sliding groove 712, the elastic member 720 may be a tension spring, one end of the tension spring is fixedly connected to the seat cushion 200, the other end of the tension spring passes through the through groove 711 and is fixedly connected to the moving plate 710, and the supporting portion 500 is fixedly connected to the moving plate 710, so that the supporting portion 500 can be elastically connected to the seat cushion 200. When the seat cushion 200 moves forward relative to the support portion 500, the tension spring is stretched and in an elastic energy storage state, and once the external force on the seat cushion 200 is removed, the tension spring immediately provides elastic force to realize the backward return of the seat cushion 200. It is understood that the present invention does not limit the number of the sliding members 230 and the number of the sliding grooves 712, nor the structure of the elastic moving mechanism 700, and the above-mentioned embodiment is only a preferred embodiment, and the elastic moving mechanism 700 may also adopt other structures, but is not limited thereto.

As shown in fig. 4, specifically, the left and right sides of the backrest 300 are both provided with a rotation limiting block 320, the armrest 400 is provided with a rotation limiting groove 421 for limiting rotation with the rotation limiting block 320, and the size of the rotation limiting groove 421 is slightly larger than that of the rotation limiting block 320, so that a certain rotation allowance is reserved between the backrest 300 and the armrest 400 to buffer the instantaneous pressure of a user on the backrest 300, thereby prolonging the service life of the armrest 400. The rotation limiting block 320 is provided with a screw hole 321, the rotation limiting groove 421 is communicated with a mounting hole 420 corresponding to the screw hole 321, and at this time, the armrest 400 and the backrest 300 can be assembled by using a screw 600. It is to be understood that the present invention is not limited to the connection structure of the armrest 400 and the backrest 300, and the above-described embodiment is only a preferred embodiment.

With the above-mentioned structure, when the back of the user tilts backwards to switch to the relaxed posture, the backrest 300 rotates backwards around the connecting pin 132 under the pressure of the back of the user, and at this time, the armrest 400 is used to limit the backward rotation angle of the backrest 300, and since the backrest 300 and the seat cushion 200 are jointly rotated and connected to the connecting pin 132 and the connecting pin 132 can slide forwards and backwards along the sliding slot 131, the backrest 300 can push the connecting pin 132 to move forwards along the sliding slot 131 during the backward rotation process, so as to drive the seat cushion 200 to move forwards along the sliding slot 131, so that the position of the buttocks of the user can be automatically adjusted forwards after switching to the relaxed posture. When the user's back tilts forward to switch to the sitting posture, once the user releases the pressure on the backrest 300, the seat cushion 200 is reset backwards along the sliding groove 131 under the elastic force of the elastic moving mechanism 700, so as to drive the backrest 300 to reset, and meanwhile, the armrest 400 can also assist the backrest 300 to reset, so that the position of the user's buttocks can be automatically adjusted backwards after the user switches to the sitting posture, and the user experience is better. It should be noted that the present invention can take the minimum value from the sliding range of the connecting pin 132 and the sliding groove 131 or the sliding range of the sliding member 230 and the sliding groove 712 to determine the forward and backward movement range of the seat cushion 200 relative to the base frame 100, and when the seat cushion 200 is at the initial position, the position of the locking groove 510 can correspond to the position of the second cross bar 141.

In some embodiments of the present invention, as shown in fig. 1, casters 121 are connected to the bottom of all the support legs 120 to facilitate the movement of the seat-back linked seat.

Further, a net bag (not shown in the drawings) is arranged below the seat cushion 200, and the net bag is detachably connected to the base frame 100 and used for storing personal items for a user.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. Seat back of body linkage seat, its characterized in that includes:

the handrail-driven folding bicycle comprises a base frame (100), wherein the left top and the right top of the base frame (100) are connected with handrails (400), the handrails (400) are elastic members, the left side and the right side of the base frame (100) are respectively provided with a rotating supporting piece (130), each rotating supporting piece (130) is provided with a sliding groove (131) extending along the front-back direction, a connecting pin (132) is connected in each sliding groove (131) in a sliding manner, and the base frame (100) is provided with a bearing piece (140);

the bottom surface of the seat cushion (200) is movably connected with a supporting part (500), an elastic moving mechanism (700) is installed between the seat cushion (200) and the supporting part (500), the supporting part (500) is provided with a clamping groove (510) extending along the left-right direction, and the clamping groove (510) is buckled on the supporting part (140) so that the seat cushion (200) can move back and forth relative to the underframe (100);

and the backrest (300) and the seat cushion (200) are connected with the connecting pin (132) in a rotating mode, and the two armrests (400) are respectively connected to the left side and the right side of the backrest (300).

2. The seat back linkage seat according to claim 1, wherein: the elastic moving mechanism (700) comprises a moving plate (710) and an elastic part (720), the moving plate (710) is connected to the seat cushion (200) in a sliding mode, the elastic part (720) is connected to the seat cushion (200) and the moving plate (710) respectively, the elastic part (720) provides elastic resetting for relative movement of the seat cushion (200) and the moving plate (710), and the supporting part (500) is fixedly connected to the moving plate (710).

3. The seatback linkage seat according to claim 2, wherein: cushion (200) are connected with two at least sliders (230), logical groove (711) and two at least sliding tray (712) have been seted up in fly leaf (710), cushion (200) with fly leaf (710) are through slider (230) with mutually supporting of sliding tray (712) carries out sliding connection, elastic component (720) are the extension spring, the one end fixed connection of extension spring in cushion (200), the other one end of extension spring is passed logical groove (711) and fixed connection in fly leaf (710).

4. The seat back linkage seat according to claim 1, wherein: the side all is equipped with first commentaries on classics hole (210) about cushion (200), the bottom of back (300) is equipped with two engaging lugs (310), two engaging lug (310) are located respectively the left and right sides of cushion (200), every engaging lug (310) all are equipped with second commentaries on classics hole (311), first commentaries on classics hole (210) with second commentaries on classics hole (311) rotate jointly connect in connecting pin (132).

5. The seatback linkage seat according to claim 4, wherein: the cushion (200) is provided with a clearance (220) avoiding the connecting lug (310).

6. The seat back linkage seat according to claim 1, wherein: the left side and the right side of the backrest (300) are both provided with a rotation limiting block (320), and the armrest (400) is provided with a rotation limiting groove (421) which performs limiting rotation with the rotation limiting block (320).

7. The seatback linkage seat according to claim 6, wherein: the rotation limiting block (320) is provided with a screw hole (321), and the rotation limiting groove (421) is communicated with a mounting hole (420) corresponding to the screw hole (321).

8. The seat back linkage seat according to claim 1, wherein: the handrail (400) is a nylon member or a polypropylene member.

9. The seat back linkage seat according to claim 1, wherein: the base frame (100) is provided with four supporting legs (120), and the bottoms of all the supporting legs (120) are connected with casters (121).

10. The seat back linkage seat according to claim 1, wherein: the below of cushion (200) is equipped with the string bag, string bag releasable connection in chassis (100).

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