TWM484353U - Office chair with chair back cushioning apparatus - Google Patents

Description

Office chair with back cushion

This creation mainly reveals an office chair, especially an office chair with a back cushioning device.

Please refer to the patent of "back elastic support configuration" of the patent No. M271491 of the Chinese patent, which is a chair back elastic support arrangement structure, which comprises a seat back of the seat, a seat and a bracket body for connecting the seat back and the seat The top end of the bracket body is assembled on the back side of the seat back, and the combined parts are assembled with elastic support members. The elastic support members comprise at least four sets of elastic pads arranged in a crisscross shape, and the front ends of the elastic pads are combined The back and rear ends of the seat back are combined at the top end of the stand portion of the bracket body.

However, the back of the office chair with the above structure must first screw the screw through the middle plate and the elastic pad and then screw it to the back of the chair, then pass another set of screws through the elastic bushing and screw it to the middle plate, and finally Mounting the bracket body to the seat is very troublesome to assemble.

Moreover, the back of the chair is supported only by two points of the screw, and the strength is weak, and the bracket body is easily deformed or even broken due to the twisting power path of the user adjusting the posture while riding.

In view of the above-described lack of conventional structures, the present author has devised an office chair having a back cushioning device that overcomes all of the disadvantages of the prior art described above.

The main purpose of the present invention is to provide an office chair having a seat back cushioning device, the main purpose of which is to provide an office chair comprising a seat, a seat back and at least one cushioning device, the seat can stand on the ground, the seat back is set on the seat, and the cushion is provided. The device comprises a buffer body, a first joint member and a second joint member. The buffer body is a soft material, and the buffer body comprises a first side and a second side away from the first side, and the buffer outer ring is provided with a Abutting against the wall, the abutting wall extends from the first side of the buffer body toward the second side, and is hollow in the abutting wall, and the width of the abutting wall adjacent to the first side of the buffer body is smaller than the width of the second side of the buffer body. The buffer body forms a buffer space on the inner side of the abutting wall, and the buffer body is provided with a receiving portion in the buffer space, the receiving portion is in the form of a solid column, and the receiving portion is coupled to the abutting wall at the first side of the buffer body, first The coupling member is fixed to the receiving portion of the buffer body and adjacent to the first side, the first coupling member is coupled to the seat, the second coupling member is fixed to the receiving portion of the buffer body and adjacent to the second side, and the second coupling member is coupled to the seat back. Reach Abutting against the back of the chair, the office chair is provided with a cushioning device between the seat and the back of the chair. When the user abuts against the back of the chair, the back of the chair can be yawed relative to the seat by the soft cushioning body, and Since the outer ring of the buffer body is provided with the abutting wall, the area of the cushioning device supported on the seat back is effectively increased, and the structural strength of the office chair is increased.

Other objects, advantages and novelty of the present invention will become more apparent from the following detailed description.

With regard to the techniques, means, and effects of the present invention, the three preferred embodiments are described in detail with reference to the drawings. This is for illustrative purposes only and is not limited by the structure of the patent application.

1 and 2, a perspective view of the first embodiment of the office chair having the seat back cushioning device and a three-dimensional exploded view of the seat back. The creative office chair 10 includes a seat 20, a seat back 30 and at least one cushioning device 40; wherein:

Please refer to FIG. 3 and FIG. 4 for a cross-sectional structural view of the first embodiment of the office chair having the seat back cushioning device. The seat 20 can stand on the ground. The seat 20 includes a body 21. The side of the body 21 near the ground is provided with a plurality of rollers 22, and a side of the body 21 away from the ground is provided with a column 23, and the column 23 is provided. A first end 231 and a second end 232 away from the first end 231 are included. The first end 231 of the post 23 is coupled to the body 21, and the second end 232 of the post 23 is away from the body 21. extend.

The seat 20 is slidably disposed on the column 23 with a connecting seat 24 and a receiving seat 25. The connecting seat 24 is adjacent to the first end 231 of the column 23, and the connecting seat 24 is selectively slidable relative to the column 23. Close to or away from the body 21, a side of the connecting seat 24 away from the body 21 is provided with a seat cushion 241, which can be selectively moved closer to or away from the body 21 by the connecting seat 24, and the seat cushion 241 can Optionally, the connector 24 slides closer to or away from the post 23 .

The receiving seat 25 is adjacent to the second end 232 of the upright 23, and the receiving seat 25 is selectively slidable relative to the upright 23 to approach or away from the body 21.

The seat back 30 is provided on the receiving seat 25 of the seat 20 .

The number of the at least one buffer device 40 is two in the embodiment. The buffer device 40 is disposed between the seat 20 and the seat back 30. The two sides of the buffer device 40 are respectively connected to the seat 20 With the back of the chair 30. The buffer device 40 includes a buffer body 41, a first joint member 42 and a second joint member 43. The buffer body 41 is made of a soft material. The cushion body 41 is made of rubber in the embodiment. 41 is formed integrally by injection molding.

The buffer body 41 includes a first side 411 and a second side 412 away from the first side 411. The outer ring of the buffer body 41 is provided with an abutting wall 413. The abutting wall 413 is formed by the buffer body 41. The first side 411 extends toward the second side 412. The abutting wall 413 is hollow and has a semi-spherical shape. The width of the abutting wall 413 adjacent to the first side 411 of the buffer body 41 is smaller than that of the buffer body 41. The width of the two sides 412 is formed on the side of the abutting wall 413 adjacent to the second side 412 of the buffer body 41 with a first abutting surface 414.

The buffer body 41 defines a buffer space 415 inside the abutting wall 413. The buffer body 41 is provided with a receiving portion 416 in the buffer space 415. The receiving portion 416 has a solid column shape, and the receiving portion 416 is in the buffer. The first side 411 of the body 41 and the abutting wall 413 are coupled to each other. The receiving portion 416 is formed on a side of the second side 412 of the buffer body 41 to form a second abutting surface 417. The receiving portion 416 is adjacent to the receiving portion 416. One side of the first side 411 of the buffer body 41 is formed with a third abutting surface 418. When the buffer device 40 is in a natural state, the distance between the third abutting surface 418 and the second abutting surface 417 is smaller than The distance between the third abutment surface 418 and the first abutment surface 414.

The buffer body 41 is provided with a plurality of reinforcing ribs 419 in the buffer space 415. The number of the plurality of reinforcing ribs 419 in the embodiment is four, and the reinforcing ribs 419 are in the form of a sheet, and the two reinforcing ribs 419 are The sides are respectively coupled to one side of the abutting wall 413 and the receiving portion 416 close to each other.

The first joint member 42 is fixed to the receiving portion 416 of the buffer body 41 and adjacent to the first side portion 411. The first joint member 42 is embedded in the buffering body for inserting the buffer body 41 into the inserting part during molding. In the body 41, a first screw 421 is protruded from the first coupling member 42. The first screw 421 protrudes out of the third abutting surface 418 of the buffer body 41. The first screw 421 is screwed to the chair. The receiving seat 25 of the seat 20 abuts the third abutting surface 418 against the receiving seat 25 of the seat 20.

The second joint member 43 is fixed to the receiving portion 416 of the buffer body 41 and adjacent to the second side portion 412. The second joint member 43 is embedded in the buffering body for inserting the buffer body 41 into the inserting part during molding. The second coupling member 43 protrudes from the second abutting surface 417 of the buffer body 41. The second screw 431 is screwed to the chair. The back 30 abuts the first abutting surface 414 and the second abutting surface 417 against the seat back 30 .

Please continue to refer to FIG. 5, which is a use state diagram of the first implementation of the office chair having the seat back cushioning device. Since the office chair 10 is provided with the cushioning device 40 between the seat 20 and the seat back 30, when the user abuts against the seat back 30, the cushion back 41 can be made by the soft cushioning body 41. Relative to the yaw angle of the seat 20, the seat back 30 can support the back of the user in a state of large area abutment in response to various seating postures of the user, and maintain the comfort of the user riding the office chair 10. .

In particular, the seat cushion 241 can adjust the height and the distance between the seat cushion 241 and the seat back 30 as the user is accustomed to make the office chair 10 suitable for a large number of users. Since the abutting wall 413 is disposed on the outer ring of the buffer body 41, the area of the cushioning device 40 supported by the seat back 30 is effectively increased, the structural strength of the office chair 10 is increased, and the applicability of the office chair 10 is further improved. The problem that the office chair 10 is damaged due to a user's sitting posture is avoided.

The distance between the third abutting surface 418 and the second abutting surface 417 is smaller than the distance between the third abutting surface 418 and the first abutting surface 414. When the cushioning device 40 is coupled to the seat back 30, the seat back 30 is pressed against the abutting wall 413 to deform the abutting wall 413, thereby increasing the strength of the cushioning device 40 against deformation and prolonging the cushioning. The service life of the device 40.

Further, since the shock absorbing device 40 is produced by injection molding, it is completed in one process, and the production is fast and the cost is low.

Referring to FIG. 6 and FIG. 7 , a perspective view, an exploded perspective view and a cross-sectional structural view of a second embodiment of an office chair having a seat back cushioning device are provided. The second embodiment of the present invention is substantially the same as the first embodiment, the main difference being that the office chair 10a in the second embodiment includes two seat backs 30a and two cushioning devices 40a, the two seat backs 30a is disposed in the receiving seat 25a of the seat 20a, and the two buffering devices 40a are respectively connected to the two seat backs 30a. The remaining structure of the office chair 10a is the same as that of the first embodiment. No longer.

Please refer to FIG. 8 to FIG. 11 for a state of use of the second embodiment of the office chair having the seat back cushioning device. Since the seat back 30a achieves the support and cushioning effect only by the cushioning device 40a, the seat back 30a can increase the yaw angle when the seat 20a is yawed, regardless of whether the user rides the ride in any manner. The office chair 10a, the two seat backs 30a can be attached to the back of the user in a large area, thereby increasing the comfort of the user.

Please refer to FIG. 12 and FIG. 13 for a cross-sectional structural view of a third embodiment of an office chair having a seat cushioning device. The third embodiment of the present invention is substantially the same as the first embodiment. The main difference is that the cushioning device 40b of the third embodiment further includes an elastic member 44b, and the elastic member 44b is disposed at the receiving portion of the buffer body 41b. 416b, the elastic member 44b is located between the first coupling member 42b and the second coupling member 43b. The two ends of the elastic member 44b respectively abut the first coupling member 42b and the second coupling member 43b. The piece 44b is a metal spring in this embodiment.

Since the elastic member 44b is made of a metal material, the elastic modulus of the elastic member 44b is greater than that of the buffer body 41b, thereby effectively increasing the force that the cushioning device 40b can withstand, and preventing the cushioning device 40b from being deformed due to excessive force. The structural strength of the cushioning device 40b.

As far as the above is concerned, it can be concluded that this creation has the following advantages:

1. An office chair having a seat back cushioning device, wherein the office chair comprises a seat, a seat back and at least one cushioning device, the seat can stand on the ground, the seat back is set on the seat, and the buffer device comprises a buffer body, a first joint member and a second joint member, the buffer body is a soft material, the buffer body comprises a first side and a second side away from the first side, and the buffer outer ring is provided with an abutting wall The abutting wall extends from the first side of the buffer body to the second side, and is hollow in the abutting wall, and the buffer body forms a buffer space on the inner side of the abutting wall, and the buffer body is provided with a receiving portion in the buffer space. The receiving portion is coupled to the abutting wall at a first side of the buffer body, the first coupling member is fixed to the receiving portion of the buffer body and adjacent to the first side, the first coupling member is coupled to the seat, and the second coupling member is fixed to the second coupling member. The receiving portion of the buffer body is adjacent to the second side, and the second coupling member is connected to the back of the chair, and the abutting wall abuts against the back of the chair, because the office chair is provided with a buffer device between the seat and the back of the chair, when the user abuts Soft cushioning for the back of the chair The seat backrest relative yaw angle is possible, and because the outer ring is provided with a cushion body against the wall, increasing the effective damping device is supported on the seat back area, increasing the structural strength of an office chair.

However, the above description is only for the preferred embodiment of the present invention, and the scope of the present invention may not be limited thereto, so that the numerical value is changed or the replacement of the equivalent elements, or the equivalent of the patent application scope of the present invention. Changes and modifications should remain within the scope of this new patent.

10‧‧‧Office Chair
20‧‧‧ seat
21‧‧‧ body
22‧‧‧Roller
23‧‧‧ Column
231‧‧‧ first end
232‧‧‧ second end
24‧‧‧Connecting Block
241‧‧‧Cushion
25‧‧‧ socket
30‧‧‧Back of the chair
40‧‧‧ buffer device
41‧‧‧ buffer
411‧‧‧ first side
412‧‧‧ second side
413‧‧‧ against the wall
414‧‧‧First abutment
415‧‧‧ buffer space
416‧‧‧Receive Department
417‧‧‧Second abutment
418‧‧‧ third abutment
419‧‧‧ reinforcing ribs
42‧‧‧First joint
421‧‧‧First screw
43‧‧‧Second joint
431‧‧‧Second screw
10a‧‧‧Office Chair
20a‧‧‧ seat
25a‧‧‧ socket
30a‧‧‧Back of the chair
40a‧‧‧buffering device
40b‧‧‧buffering device
41b‧‧‧ buffer
416b‧‧‧Receiving Department
42b‧‧‧First joint
43b‧‧‧Second joint
44b‧‧‧Flexible parts

Figure 1 is a perspective view of a first embodiment of an office chair having a seat cushioning device. Figure 2 is an exploded perspective view of the back of the first embodiment of the office chair having the seat back cushioning device. Fig. 3 is a cross-sectional structural view showing a cushioning device of a first embodiment of an office chair having a seat back cushioning device. Figure 4 is a cross-sectional structural view showing a first embodiment of an office chair having a seat cushioning device. Fig. 5 is a view showing the state of use of the first embodiment of the office chair having the seat back cushioning device. Figure 6 is a perspective view of a second embodiment of an office chair having a seat back cushioning device. Figure 7 is an exploded perspective view of the second embodiment of the office chair having the seat back cushioning device. Figure 8 is a view showing the state of use of the second embodiment of the office chair having the seat back cushioning device. Figure 9 is a view showing the state of use of the second embodiment of the office chair having the seat back cushioning device. Figure 10 is a view showing the state of use of the second embodiment of the office chair having the seat back cushioning device. Figure 11 is a view showing the state of use of the second embodiment of the office chair having the seat back cushioning device. Figure 12 is a cross-sectional structural view showing a cushioning device of a third embodiment of an office chair having a seat back cushioning device. Figure 13 is a cross-sectional structural view showing a third embodiment of an office chair having a seat back cushioning device.

23‧‧‧ Column

25‧‧‧ socket

30‧‧‧Back of the chair

40‧‧‧ buffer device

41‧‧‧ buffer

413‧‧‧ against the wall

415‧‧‧ buffer space

416‧‧‧Receive Department

419‧‧‧ reinforcing ribs

421‧‧‧First screw

431‧‧‧Second screw

Claims (12)

An office chair having a seat back cushioning device, comprising: a seat that can stand on the ground; a seat back, the seat back is disposed on the seat; at least one cushioning device, the cushioning device includes a a buffer body, a first joint member and a second joint member, the buffer body is a soft material, the buffer body includes a first side and a second side away from the first side, the buffer outer ring is provided with a Abutting against the wall, the abutting wall extends from the first side of the buffer body toward the second side, the abutting wall is hollow, and the buffer body forms a buffer space inside the abutting wall, the buffer body is a receiving portion is disposed in the buffer space, the receiving portion is coupled to the abutting wall at a first side of the buffer body, and the first coupling member is fixed to the receiving portion of the buffer body and adjacent to the first side The first coupling member is coupled to the seat, the second coupling member is fixed to the receiving portion of the buffer body and adjacent to the second side, and the second coupling member is coupled to the seat back, and the abutting wall abuts against the seat Chair back. The office chair with a seat back cushioning device according to claim 1, wherein the abutting wall is formed with a first abutting surface on a side close to the second side of the buffer body, and the receiving portion is adjacent to the buffer body. One side of the two sides is formed with a second abutting surface, and the receiving portion is formed with a third abutting surface on a side close to the first side of the buffer body, the first abutting surface and the second abutting surface Abutting against the seat back, the third abutment surface abuts against the seat. The office chair having the seat back cushioning device according to claim 2, wherein the distance between the third abutting surface and the second abutting surface is smaller than the third abutting surface when the cushioning device is in a natural state The distance between the first abutment faces. An office chair having a seat back cushioning device according to claim 1, wherein the buffer body is integrally formed by injection molding, and the first joint member is embedded in the inserting member of the buffer body during injection molding. In the buffer body, the second bonding member is embedded in the buffer body for inserting the buffer body during the injection molding process. The office chair having a seat back cushioning device according to claim 4, wherein the first coupling member protrudes from a first screw, and the first screw protrudes out of the third abutting surface of the buffer body, the first a screw is disposed on the seat, the second joint protrudes from a second screw, the second screw protrudes out of the second abutting surface of the buffer body, and the second screw is screwed on the seat back . An office chair having a seat cushioning device according to claim 5, wherein the seat includes a body, the body is provided with a plurality of rollers on a side close to the ground, and a column is disposed on a side of the body away from the ground. The column includes a first end and a second end away from the first end, the first end of the column is coupled to the body, and the second end of the column extends away from the body, the seat is on the column The sliding seat is provided with a connecting seat and a receiving seat, the connecting seat is adjacent to the first end of the column, and the connecting seat is selectively slidable relative to the column to be close to or away from the body, the connecting seat is away from the side of the body Providing a seat cushion capable of selectively approaching or away from the body by the connecting seat, and the seat cushion is selectively slidable relative to the connecting seat toward or away from the column, the receiving seat being adjacent to the column The second end of the socket can be selectively moved closer to or away from the main body, and the first screw is screwed to the receiving seat of the seat, and the third abutting surface abuts against the seat Undertake seat. The office chair with a seat back cushioning device according to claim 1, wherein the buffer body is provided with a plurality of reinforcing ribs in the buffer space, the reinforcing ribs are in the form of a sheet, and the two sides of the reinforcing rib are respectively coupled to the abutting The side of the wall and the receiving portion are close to each other. An office chair having a seat back cushioning device according to claim 7, wherein the number of the plurality of reinforcing ribs is four. An office chair having a seat back cushioning device according to claim 1, wherein the number of the at least one cushioning device is two, the cushioning body is made of rubber, and the abutting wall is adjacent to the first side of the buffer body. The width is smaller than the width of the second side of the buffer body, the abutting wall has a semi-spherical shape, and the receiving portion has a solid cylindrical shape. The office chair having a seat back cushioning device according to claim 1, wherein the office chair comprises a total of two seat backs, and the number of the at least one buffer device is two, and the two buffer devices are respectively connected. On the two seat backs described. An office chair having a seat cushioning device according to claim 1, wherein the cushioning device further comprises an elastic member disposed on the receiving portion of the buffer body, the elastic member being located at the first coupling member and the Between the second joints. The office chair with a seat cushioning device according to claim 11, wherein the two ends of the elastic member respectively abut the first coupling member and the second coupling member, and the elastic member is a metal spring.