CN112617493B

CN112617493B - Chair with detachable seat

Info

Publication number: CN112617493B
Application number: CN202011529659.8A
Authority: CN
Inventors: 伍家胜
Original assignee: Shenzhen Donggang Jiasheng Furniture Manufacturing Co ltd
Current assignee: Shenzhen Dsk Intelligent Furniture Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-06-24
Anticipated expiration: 2040-12-22
Also published as: CN112617493A

Abstract

The utility model relates to a seat, relate to the technical field of thing to sit on, it includes cushion and back, the one end of cushion is provided with first connecting piece, the other end of back is provided with the second connecting piece, fixed being provided with on the first connecting piece rotates the articulated shaft of being connected with the second connecting piece, be provided with between cushion and the back and uprise and fill up the waist subassembly, it sets up including rotating the waist of filling up cam that sets up in the second connecting piece to uprise fill up the waist subassembly, coaxial fixed being provided with the drive wheel on the cam of filling up the waist, coaxial fixed being provided with the drive wheel on the articulated shaft, the transmission between drive wheel and the drive wheel. The backrest rotates and uses the articulated shaft to overturn as the center with driving the waist-padding cam, and the drive wheel is fixed in the articulated shaft so that relative rotation takes place between the drive wheel that the non-rotating drive wheel and follow the second connecting piece and remove, from this for the angle change and the automatic change of back can be followed to the bed hedgehopping degree of waist-padding cam, and the bed hedgehopping degree of waist can keep being adapted to the contained angle between cushion and the back.

Description

Chair with detachable seat

Technical Field

The application relates to the technical field of seats, in particular to a seat.

Background

A seat typically includes a seat cushion and a backrest provided to the seat cushion. A waist pad is often arranged between the cushion and the backrest and is attached to the waist of a person to relieve the waist soreness and the like caused by long-time sitting.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the height of the lumbar pad is fixed, but when the included angle between the cushion and the backrest changes, the height of the lumbar pad actually needed by a human body is different, so that the use experience of the seat is poor.

Disclosure of Invention

In order to adapt the height of the waist to the angle between the seat cushion and the backrest, the present application aims to provide a seat.

The application provides a seat adopts following technical scheme:

the utility model provides a seat, includes cushion and back, the one end of cushion is provided with first connecting piece, the other end of back is provided with the second connecting piece, fixed be provided with on the first connecting piece with the second connecting piece rotates the articulated shaft of connecting, the cushion with be provided with between the back and uprise the waist of cushion subassembly, uprise the waist of cushion subassembly including rotate set up in the waist of cushion cam of second connecting piece, coaxial fixed is provided with the drive wheel on the waist of cushion cam, coaxial fixed is provided with the drive wheel on the articulated shaft, the drive wheel with friction drive or meshing transmission between the drive wheel.

Through adopting above-mentioned technical scheme, the back rotates and uses the articulated shaft to overturn as the center in order to drive the waist-pad cam, and the drive wheel is fixed in the articulated shaft so that the relative rotation takes place between the drive wheel that non-rotating drive wheel and follow the second connecting piece and remove, from this for the angle change and the automatic change of back can be followed to the bed hedgehopping degree of backing up the waist cam, the bed hedgehopping degree of waist can keep being adapted to the contained angle between cushion and the back, thereby improve the use experience of this seat.

Optionally, the cushion top is formed with the room of taking, the cushion with be provided with between the back and be used for increasing the supplementary waist of backing up subassembly of backing up waist area of backing up the waist cam, supplementary waist of backing up subassembly is including backing up the waistband, the quantity of backing up the waistband is at least one, the one end of backing up the waistband with the cushion is connected and the other end with the back is connected, the outer fringe face of backing up the waist cam support press in it keeps away from to fill up the waistband the one side of taking the space.

Through adopting above-mentioned technical scheme, the waist support belt receives the offset pressure of waist support cam in order to protruding in the riding space to the part outside people's waist and the waist support cam contact part can receive the bearing of waist support belt, thereby further improves the use of this seat and experiences.

Optionally, be provided with on the back and be used for pressing from both sides the holder of tight pad waistband tip, the holder includes that the initiative presss from both sides the wheel and supplementary presss from both sides the wheel, the initiative press from both sides the wheel with supplementary press from both sides the wheel all rotate set up in the back, the initiative press from both sides the wheel with supplementary clamp is formed with between the wheel and is used for pressing from both sides the tight clearance of clamp of pad waistband, be provided with on the back and be used for ordering about or restriction the initiative is pressed from both sides wheel pivoted accuse and is changeed the piece.

Through adopting above-mentioned technical scheme, when the initiative was pressed from both sides the wheel and is carried out the centre gripping with supplementary clamp wheel to the pad waistband, accuse commentaries on classics piece control initiative pressed from both sides the rotation of wheel in order to increase or reduce the length of pad waistband between cushion and back for it takes place to reduce the condition of relaxing or excessive tensile that the pad waistband leads to because of factors such as the change of the height degree of pad waist cam pad, thereby prolongs the life of pad waistband.

Optionally, the rotation control part comprises a rotation control gear coaxially and fixedly arranged on the driving clamping wheel and a rotation control rack arranged on the backrest in a sliding manner, the rotation control gear and the rotation control rack are in meshing transmission, and a rack connecting rod hinged to the waist-cushion cam is hinged to the end of the rotation control rack.

Through adopting above-mentioned technical scheme, drive rack connecting rod when stepping up the waist cam pivoted and remove, rack connecting rod drive accuse commentaries on classics rack slip so that accuse changes the gear and rotate, and accuse changes the gear drive and makes the initiative press from both sides the wheel and rotate to make the initiative press from both sides wheel and supplementary press from both sides the wheel cooperation adjustment cushion waistband length between cushion and back, from this, the setting up of accuse commentaries on classics spare makes the length adjustment of cushion waistband can be adaptive to the angle change between cushion and the back.

Optionally, a winding disc is rotatably arranged on the backrest, and one end of the waist pad belt connected with the backrest is wound on the winding disc.

Through adopting above-mentioned technical scheme, the tip of rolling up the coiling pad waistband is in order to reduce pad waistband tip and place at will and the winding takes place with other spare parts that lead to.

Optionally, the lower terminal surface of cushion slides and is provided with and extends the callus on the sole and be used for the conflict to push away smooth extend the callus on the sole push away the slider, it is located to push away the slider extend the callus on the sole and be close to one side of articulated shaft, push away on the slider articulated have with waist support cam articulated slider connecting rod.

Through adopting above-mentioned technical scheme, drive the slider connecting rod and remove when backing up waist cam pivoted, the slider connecting rod drives and pushes away the slider slip to the below that the cushion is stretched out in order to extend the use of callus on the sole is extended in the promotion.

Optionally, one end of the backrest, which is far away from the second connecting piece, is hinged with a support frame.

Through adopting above-mentioned technical scheme, when the contained angle is great between back and cushion, the support frame can support the back subaerial to improve the stability that the back was placed.

Optionally, be provided with on the support frame be used for with the axis of rotation that the back rotated to be connected, coaxial fixed being provided with in the axis of rotation fills up the head cam, it has protruding pad head end to fill up the head cam, the protruding pad head end that fills up the head cam is located the axis of rotation is kept away from one side of support frame.

Through adopting above-mentioned technical scheme, the people need carry out certain bed hedgehopping to the head often when lying in order to protect the vertebra, and when the support frame supported in ground, the protruding pad head end of pad head cam is protruding in order to provide people's head bed hedgehopping and support to improve the use of this seat and experience.

In summary, the present application includes at least one of the following beneficial technical effects:

the backrest rotates to drive the waist-padding cam to overturn by taking the hinge shaft as a center, and the driving wheel is fixed on the hinge shaft so as to enable the non-rotating driving wheel and the driving wheel moving along with the second connecting piece to rotate relatively, so that the padding height of the waist-padding cam can automatically change along with the angle change of the backrest, and the padding height of the waist can keep being adapted to an included angle between the cushion and the backrest, thereby improving the use experience of the seat;

the cushion waist belt is pressed by the cushion waist cam to bulge towards the inside of the sitting space, so that the part of the waist of a person, except the contact part of the waist of the person and the cushion waist cam, can be supported by the cushion waist belt, and the use experience of the seat is further improved;

when a person lies on the chair, the head of the person is required to be heightened to protect the spine, and when the supporting frame is supported on the ground, the raised pad end of the pad cam is raised to provide the heightened support for the head of the person, so that the use experience of the chair is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the front view of the present application in the sitting state;

FIG. 2 is a schematic front view of the embodiment of the present application;

FIG. 3 is a schematic view of the overall structure of a rear view in a seating state according to an embodiment of the present invention;

FIG. 4 is a schematic view of the mounting structure between the clamper, the jog dial and the wind-up reel according to the embodiment of the present application;

fig. 5 is a schematic overall structure view of the back view of the reclining state of the present application.

In the figure, 0, the seating space; 1. a cushion; 11. a first connecting member; 2. a backrest; 21. a second connecting member; 3. hinging a shaft; 4. a variable height lumbar pad assembly; 41. a lumbar support cam; 42. a driving wheel; 43. a drive wheel; 5. an auxiliary lumbar pad assembly; 51. a waist cushion; 52. a clamping member; 521. a driving pinch roller; 522. an auxiliary pinch roller; 53. a rotation control member; 531. controlling and rotating the gear; 532. a rotation control rack; 533. a rack connecting rod; 54. a winding disc; 6. extending the foot pad; 7. pushing the sliding block; 71. a slider connecting rod; 8. a support frame; 9. a pad head cam; 91. the pad end is raised.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a seat, which has a sitting state and a lying state.

Referring to fig. 1 and 2, a seat includes a seat cushion 1 and a seatback 2, and a seating space 0 is formed between the seat cushion 1 and the seatback 2 above the seat cushion 1. One end of the cushion 1 is provided with a first connecting piece 11, the other end of the backrest 2 is provided with a second connecting piece 21, and the first connecting piece 11 and the second connecting piece 21 are both arranged in a strip shape or a tubular shape. The first connecting piece 11 is fixedly provided with a hinge shaft 3 which is rotatably connected with the second connecting piece 21, and the hinge shaft 3 can be a damping rotating shaft. The rotation between the cushion 1 and the backrest 2 is realized through a hinged shaft 3. When the included angle between the seat cushion 1 and the backrest 2 is close to 90 degrees, the seat is in a sitting state; the seat can be used for a person to lie down when the angle between the seat cushion 1 and the backrest 2 gradually approaches 180 deg., so that the seat enters a lying state.

The presence of the first link 11 and the second link 21 allows a transition space to be formed between the seat cushion 1 and the backrest 2. In order to support the waist, a height-increasing lumbar pad assembly 4 and an auxiliary lumbar pad assembly 5 are provided in the transition space. Become to fill up waist subassembly 4 and be used for adjusting according to the rotation angle of back 2 and fill up the height, supplementary waist subassembly 5 is used for increasing and becomes to fill up the area of contact between waist subassembly 4 and the waist to optimize the bed height of waist and experience.

Referring to fig. 2 and 3, the variable height lumbar support assembly 4 includes a lumbar support cam 41 rotatably disposed on the second connecting member 21, a convex lumbar support end is provided on an outer circumferential surface of the lumbar support cam 41, a height of the lumbar support cam 41 is higher when the convex lumbar support end is close to a bisector of an included angle between the backrest 2 and the seat cushion 1, and the height of the lumbar support cam 41 is gradually reduced when the convex lumbar support end is gradually away from the bisector of the included angle between the backrest 2 and the seat cushion 1. The axis of rotation of the lumbar cam 41 is parallel to the axis of the hinge shaft 3. The end of the waist-cushion cam 41 is coaxially and fixedly provided with a driving wheel 42, the hinge shaft 3 is coaxially and fixedly provided with a driving wheel 43, and the driving wheel 42 and the driving wheel 43 are in friction transmission or meshing transmission. In this embodiment, the transmission wheel 42 and the driving wheel 43 are both gears, and the transmission wheel 42 and the driving wheel 43 are in meshing transmission.

It should be noted that, when the backrest 2 rotates, the lumbar support cam 41 rotates with a certain angle following the backrest 2, and the rotation angle of the lumbar support cam 41 can be further increased by controlling the transmission ratio between the transmission wheel 42 and the driving wheel 43.

Referring to fig. 3 and 4, the auxiliary waist pad assembly 5 includes at least one waist pad band 51, and the waist pad band 51 may be a relatively inelastic ribbon such as a rattan. The outer edge surface of the waist-cushion cam 41 is pressed against the surface of the waist-cushion belt 51 away from the seating space 0, so that the waist-cushion belt 51 is projected into the seating space 0. When the number of the lumbar support belts 51 is two or more, the lumbar support belts 51 are spaced apart along the axial direction of the lumbar support cam 41. One end of the waist-pad band 51 is a fixed end and the other end is an adjustable end. The fixed ends of all the cushion waistbands 51 are fixedly connected with the cushion 1. A winding disc 54 is rotatably provided on the side of the backrest 2 away from the seating space 0, and the adjustment ends of all the cushion waistbands 51 are wound around the winding disc 54.

As the angle between the seat cushion 1 and the seatback 2 changes, the length of the lumbar strap 51 between the seat cushion 1 and the seatback 2 needs to be changed adaptively. For this purpose, the backrest 2 is further provided with a clamp 52 and a rotation control member 53, both the clamp 52 and the rotation control member 53 being located on the side of the take-up reel 54 adjacent to the hinge axis 3. The holding members 52 are used to hold the cushion-belt 51 and control the length of the cushion-belt 51 between the take-up reel 54 on the seat cushion 1 and the backrest 2 by moving a part of the cushion-belt 51. The rotation control member 53 is used for the auxiliary holding member 52 to control the movement of the lap belt 51.

Specifically, the clamping member 52 includes a driving clamping wheel 521 and an auxiliary clamping wheel 522 arranged in parallel with the driving clamping wheel 521, and the driving clamping wheel 521 and the auxiliary clamping wheel 522 are in gear engagement transmission or friction wheel friction transmission. The driving pinch roller 521 and the auxiliary pinch roller 522 are both rotatably disposed on the backrest 2, and the rotation axis of the driving pinch roller 521 is parallel to the rotation axis of the take-up reel 54. A clamping gap is formed between the driving pinch roller 521 and the auxiliary pinch roller 522, the width of the clamping gap is smaller than the thickness of the cushion waistband 51, and the clamping gap is used for clamping the part of the cushion waistband 51 close to the adjusting end. The rotation control member 53 can drive or limit the rotation of the driving pinch roller 521, the length of the cushion belt 51 between the seat cushion 1 and the backrest 2 is changed during driving, and the length of the cushion belt 51 between the seat cushion 1 and the backrest 2 is kept stable during limiting. The rotation control member 53 includes a rotation control gear 531 coaxially fixed to the driving pinch wheel 521 and a rotation control rack 532 slidably disposed on the backrest 2. The length direction of the rotation control rack 532 is arranged along the direction close to the hinge shaft 3, the length direction of the rotation control rack 532 is perpendicular to the axis direction of the hinge shaft 3, and the sliding direction of the hole rotation control rack 532 is the length direction of the rotation control rack 532. The rotation control gear 531 and the rotation control rack 532 are in meshing transmission, and a rack connecting rod 533 hinged with the waist cushion cam 41 is hinged to the end part, close to the hinge shaft 3, of the rotation control rack 532. The rotation of the lumbar pad cam 41 simultaneously drives the rack connecting rod 533 to move, the rack connecting rod 533 drives the rotation control rack 532 to slide so as to rotate the rotation control gear 531, and the rotation control gear 531 drives the driving clamping wheel 521 to rotate, so that the driving clamping wheel 521 and the auxiliary clamping wheel 522 are matched to adjust the length of the lumbar pad belt 51 between the seat cushion 1 and the backrest 2.

Referring to fig. 3 and 5, in order to increase the support for the feet of the person, the lower end surface of the seat cushion 1 is slidably provided with an extending foot pad 6 and a push slider 7 for pushing against and sliding the extending foot pad 6, the push slider 7 is located on one side of the extending foot pad 6 close to the hinge shaft 3, the sliding direction of the extending foot pad 6 is arranged along the direction away from the hinge shaft 3, and the sliding direction of the push slider 7 is the same as the sliding direction of the extending foot pad 6. The push slider 7 is hinged with a slider connecting rod 71 hinged with the waist cushion cam 41. The waist-pad cam 41 rotates and simultaneously drives the slider connecting rod 71 to move, and the slider connecting rod 71 drives the push slider 7 to slide, so that the extension foot pad 6 is pushed to stretch out of the lower part of the seat cushion 1, and the extension foot pad 6 is convenient to use.

Referring to fig. 5, in order to increase the support for the head when the included angle between the backrest 2 and the seat cushion 1 is large, a mounting groove is formed in one end of the backrest 2, which is far away from the second connecting piece 21, a rotating shaft is arranged in the mounting groove in a rotating manner, and the rotating axis of the rotating shaft is parallel to the rotating axis of the hinge shaft 3. The rotating shaft is fixedly provided with a supporting frame 8 and a cushion head cam 9. The support frame 8 can support the backrest 2 on the ground to improve the stability of the backrest 2. The axis of the pad head cam 9 is parallel or perpendicular to the axis of the rotating shaft, the pad head cam 9 has a convex pad head end 91 for extending into the seating space 0, and the convex pad head end 91 of the pad head cam 9 is located on the side of the rotating shaft away from the support frame 8. When a person lies on the chair, the head of the person is required to be raised to protect the spine, and when the support frame 8 is supported on the ground, the raised pad end 91 of the pad cam 9 is raised to provide a raised support for the head of the person, so that the use experience of the chair is improved.

The implementation principle of a seat in the embodiment of the application is as follows:

(1) when the seatback 2 needs to be rotated to increase the angle between the seatback 2 and the seat cushion 1, the degree of padding of the lumbar pad cam 41 needs to be decreased, and the length of the lumbar pad belt 51 between the seat cushion 1 and the seatback 2 needs to be increased. Specifically, the backrest 2 rotates to drive the lumbar support cam 41 to turn over around the hinge shaft 3, and the driving wheel 43 is fixed to the hinge shaft 3 to enable the non-rotating driving wheel 43 and the driving wheel 42 moving along with the second connecting piece 21 to rotate relatively, so that the convex lumbar support end of the lumbar support cam 41 is gradually far away from the bisector of the included angle between the backrest 2 and the seat cushion 1, and the effect of reducing the height of the lumbar support cam 41 is achieved. Meanwhile, the waist-cushion cam 41 rotates to drive the rack connecting rod 533 to move and swing, the rack connecting rod 533 drives the rotation control rack 532 to slide on the backrest 2 to rotate the rotation control gear 531, and the rotation control gear 531 drives the driving clamping wheel 521 to rotate to convey the waist-cushion belt 51 in a direction close to the seat cushion 1, so that the length of the waist-cushion belt 51 between the seat cushion 1 and the backrest 2 is increased.

(2) When the backrest 2 needs to be rotated reversely to reduce the angle between the backrest 2 and the seat cushion 1, the degree of padding of the lumbar support cam 41 needs to be increased, and the length of the lumbar support belt 51 between the seat cushion 1 and the backrest 2 needs to be shortened. Specifically, the backrest 2 rotates reversely to drive the lumbar support cam 41 to reversely turn around the hinge shaft 3, and the driving wheel 43 is fixed on the hinge shaft 3 to make the non-rotating driving wheel 43 and the driving wheel 42 moving along with the second connecting member 21 rotate relatively, so that the convex lumbar support end of the lumbar support cam 41 is gradually close to the bisector of the included angle between the backrest 2 and the seat cushion 1, and the effect of reducing the height of the lumbar support cam 41 is achieved. Meanwhile, the lumbar support cam 41 rotates to drive the rack connecting rod 533 to move reversely and swing, the rack connecting rod 533 drives the rotation control rack 532 to slide reversely on the backrest 2 to enable the rotation control gear 531 to rotate reversely, and the rotation control gear 531 drives the driving clamping wheel 521 to rotate so as to enable the lumbar support belt 51 to be conveyed away from the seat cushion 1, so that the length of the lumbar support belt 51 between the seat cushion 1 and the backrest 2 is reduced.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a seat, includes cushion (1) and back (2), the one end of cushion (1) is provided with first connecting piece (11), the other end of back (2) is provided with second connecting piece (21), first connecting piece (11) go up fixed be provided with second connecting piece (21) rotate articulated shaft (3) of connecting, its characterized in that: a height-variable waist-pad assembly (4) is arranged between the seat cushion (1) and the backrest (2), the height-variable waist-pad assembly (4) comprises a waist-pad cam (41) rotatably arranged on the second connecting piece (21), a driving wheel (42) is coaxially and fixedly arranged on the waist-pad cam (41), a driving wheel (43) is coaxially and fixedly arranged on the articulated shaft (3), and the driving wheel (42) and the driving wheel (43) are in friction transmission or meshing transmission;

a sitting space (0) is formed above the seat cushion (1), an auxiliary waist cushion component (5) for increasing the waist cushion area of the waist cushion cam (41) is arranged between the seat cushion (1) and the backrest (2), the auxiliary waist cushion component (5) comprises at least one waist cushion belt (51), one end of the waist cushion belt (51) is connected with the seat cushion (1) and the other end of the waist cushion belt (51) is connected with the backrest (2), and the outer edge surface of the waist cushion cam (41) is pressed against the surface, far away from the sitting space (0), of the waist cushion belt (51);

be provided with on back (2) and be used for pressing from both sides the holder (52) of pad waistband (51) tip, holder (52) including initiative pinch roller (521) and supplementary pinch roller (522), initiative pinch roller (521) with supplementary pinch roller (522) all rotate set up in back (2), initiative pinch roller (521) with be formed with between supplementary pinch roller (522) and be used for pressing from both sides the tight clearance of clamp pad waistband (51), be provided with on back (2) and be used for driving about or restrict the accuse commentaries on classics piece (53) of initiative pinch roller (521) pivoted.

2. A seat as claimed in claim 1, wherein: the rotation control piece (53) comprises a rotation control gear (531) coaxially and fixedly arranged on the driving clamping wheel (521) and a rotation control rack (532) arranged on the backrest (2) in a sliding mode, the rotation control gear (531) and the rotation control rack (532) are in meshing transmission, and a rack connecting rod (533) hinged with the lumbar support cam (41) is hinged to the end portion of the rotation control rack (532).

3. A seat according to claim 2, wherein: the backrest (2) is rotatably provided with a winding disc (54), and one end of the cushion waistband (51) connected with the backrest (2) is wound on the winding disc (54).

4. A seat as claimed in claim 1, wherein: the lower terminal surface of cushion (1) slides and is provided with and extends callus on the sole (6) and is used for the conflict to push away smooth extend the slider (7) that pushes away of callus on the sole (6), it is located to push away slider (7) extend callus on the sole (6) and be close to one side of articulated shaft (3), push away on slider (7) articulated have with fill up waist cam (41) articulated slider connecting rod (71).

5. A seat as claimed in claim 1, wherein: one end, far away from the second connecting piece (21), of the backrest (2) is hinged with a support frame (8).

6. A seat according to claim 5, wherein: be provided with on support frame (8) be used for with back (2) rotate the axis of rotation of connecting, coaxial fixed pad head cam (9) that is provided with in the axis of rotation, pad head cam (9) have protruding pad head end (91), the protruding pad head end (91) of pad head cam (9) are located the axis of rotation is kept away from one side of support frame (8).