CN215913889U

CN215913889U - Foldable engineering chair

Info

Publication number: CN215913889U
Application number: CN202121693265.6U
Authority: CN
Inventors: 孙小冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-25
Filing date: 2021-07-25
Publication date: 2022-03-01
Anticipated expiration: 2031-07-25

Abstract

The utility model discloses a foldable engineering chair, which comprises: chair legs; the cushion is arranged at the upper end of the chair leg; the two handrails are connected with the left end and the right end of the cushion; wherein, still include: a backrest rotatably adjacent to said seat cushion or remote from said seat cushion; the headrest is arranged at the upper end of the backrest. By using the folding chair, the backrest is provided with the upper backrest and the lower backrest which are connected with the outer frame through the connecting piece, so that the folding function is realized, the space is saved, and the upper backrest can be adjusted in height to improve the sitting comfort of different people.

Description

Foldable engineering chair

Technical Field

The utility model relates to the technical field of furniture chairs, in particular to a foldable engineering chair.

Background

At present, the engineering chairs on the market are all integrated and are inconvenient to fold and store. While the folding functional seat is generally a plastic seat with some basic wooden or metal supports, and is often used in public places such as restaurants, the functional seat used in home or office usually does not have the folding function, and is not easy to store and arrange.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a foldable ergonomic chair.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a foldable ergonomic chair comprising: chair legs; the cushion is arranged at the upper end of the chair leg; the two handrails are connected with the left end and the right end of the cushion; wherein, still include: a backrest rotatably adjacent to said seat cushion or remote from said seat cushion; the headrest is arranged at the upper end of the backrest.

The above foldable ergonomic chair, wherein the backrest comprises: the lower backrest is connected with the rear end of the seat cushion; the upper backrest is connected with the lower backrest in a vertically movable mode, and meanwhile, the upper backrest is rotatably connected with the lower backrest.

In the above foldable engineering chair, the lower backrest is provided with an outer frame which penetrates through the lower backrest in the vertical direction, and the outer frame is provided with a strip-shaped hole in the vertical direction.

In the above foldable ergonomic chair, the upper ends of the outer frame and the strip-shaped holes are higher than the lower backrest.

In the above foldable engineering chair, the upper backrest is provided with a connecting piece, the connecting piece can be inserted into the outer frame along the vertical direction, and meanwhile, the upper backrest is rotatably connected with the upper end of the outer frame through the connecting piece.

The above foldable engineering chair further comprises: the lower end of the connecting piece is provided with a through hole, and the positioning piece can be inserted into the strip-shaped hole and the through hole in a matched mode.

The above foldable engineering chair further comprises: the first control device is arranged at the joint of the seat cushion and the chair legs; the cushion adjusting rod is connected with the first control device and controls the cushion to lift up and down; the backrest adjusting rod is connected with the first control device and controls the lower backrest to incline.

The above foldable engineering chair further comprises: and the second control device is arranged at the joint of the upper backrest and the headrest and controls the headrest to move along the vertical direction.

Due to the adoption of the technology, compared with the prior art, the utility model has the following positive effects:

the backrest of the utility model is provided with an upper backrest and a lower backrest, the upper backrest and the lower backrest are connected with the outer frame through the connecting piece, the folding function is realized, the space is saved, and the upper backrest can also be adjusted in height to improve the sitting comfort of different people.

Drawings

FIG. 1 is a schematic view of an ergonomic chair of the present invention that is foldable.

FIG. 2 is a schematic view of another angle of the chair of the present invention.

FIG. 3 is an exploded view of a foldable ergonomic chair of the present invention.

Figures 4 a-4 c are schematic views illustrating the use of the foldable ergonomic chair of the present invention.

In the drawings: 1. chair legs; 2. a cushion; 3. a handrail; 4. a headrest; 51. a lower backrest; 52. an upper backrest; 53. a connecting member; 54. a through hole; 6. an outer frame; 61. a strip-shaped hole; 7. a positioning member; 81. a first control device; 82. a cushion adjusting rod; 83. a backrest adjusting lever; 91. a second control device; 92. and controlling the switch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 is a schematic view of a foldable ergonomic chair of a preferred embodiment, FIG. 2 is a schematic view of another angle of the foldable ergonomic chair of the preferred embodiment, FIG. 3 is an exploded view of the foldable ergonomic chair of the preferred embodiment, FIGS. 4a to 4c are schematic views illustrating the use of the foldable ergonomic chair of the preferred embodiment, and FIG. 1 to 4c show the foldable ergonomic chair of the preferred embodiment, comprising: chair foot 1 and cushion 2, cushion 2 locates the upper end of chair foot 1. Preferably, a cylinder is arranged between the chair leg 1 and the cushion 2, namely one end of the cylinder is fixedly connected with the chair leg 1, and the other end of the cylinder is fixedly connected with the cushion 2.

Further, as a preferred embodiment, the foldable ergonomic chair of a preferred embodiment further comprises: and the backrest is arranged at the rear end of the seat cushion 2. The backrest has rotatability relative to the seat cushion 2, and the rotated backrest can be close to the seat cushion 2, namely the backrest can be close to or close to the seat cushion 2 so as to be parallel to or contact with the seat cushion 2; the backrest has rotatability relative to the seat cushion 2, the rotated backrest can be far away from the seat cushion 2, namely, the backrest can be far away from the seat cushion 2 to form an angle with the seat cushion 2, and when a person sits on the seat cushion 2, the back of the person is reliable to the backrest.

Furthermore, as a preferred embodiment, a preferred embodiment of the foldable ergonomic chair further comprises: two armrests 3, two armrests 3 connect the left and right ends of cushion 2 respectively to two armrests 3 can connect the left and right ends of back respectively.

In addition, as a preferred embodiment, a preferred embodiment of the foldable ergonomic chair further comprises: a headrest 4, the headrest 4 is arranged at the upper end of the backrest.

The present invention also has the following embodiments in addition to the above:

further, in a preferred embodiment, please refer to fig. 1 to 4c, the backrest comprises: a lower back 51 and an upper back 52, the lower back 51 being disposed at the rear end of the seat cushion 2, the upper back 52 being connected to the lower back 51, and the upper back 52 being movable up and down relative to the lower back 51 to accommodate persons of different heights. Meanwhile, the upper backrest 52 can also realize the rotation relative to the lower backrest 51, so that the upper backrest 52 can be rotatably close to the seat cushion 2, namely, the upper backrest 52 is parallel to or in contact with the seat cushion 2 after rotating, and the folding performance of the seat is realized. Or the upper back rest 52 may also be angled away from the seat cushion 2 so that the back rests against the upper back rest 52 and the lower back rest 51 when a person sits on the seat cushion 2.

Further, in a preferred embodiment, two armrests 3 are connected to the left and right ends of the lower backrest 51, respectively.

Further, in a preferred embodiment, the lower backrest 51 is provided with an outer frame 6, and the outer frame 6 is specifically provided at the rear portion of the lower backrest 51. The inside of the outer frame 6 is formed to be through along the vertical direction, and the side of the outer frame 6 is also provided with a strip-shaped hole 61 along the vertical direction, and the strip-shaped hole 61 is through with the inside of the outer frame 6.

Further, in a preferred embodiment, the upper end of the outer frame 6 and the upper end of the bar-shaped hole 61 are higher than the upper end surface of the lower backrest 51.

Further, in a preferred embodiment, the end of the upper end of the outer frame 6 contacting the lower back 51 is lower than the end of the upper end of the outer frame 6 away from the lower back 51.

Further, in a preferred embodiment, the upper back 52 is provided with a connecting member 53, the connecting member 53 protrudes downward from the lower end of the upper back 52, and the upper back 52 can be inserted into the inner portion of the outer frame 6 in the up-and-down direction through the connecting member 53 to adjust the height of the upper back 52 to satisfy people of different heights. In addition, when the upper back 52 moves upward and the lower end of the connecting member 53 is positioned at the upper end of the outer frame 6, the upper back 52 can be rotated with respect to the upper end of the outer frame 6 by the connecting member 53.

Further, in a preferred embodiment, the ergonomic foldable chair of the preferred embodiment further comprises: the positioning piece 7 and the lower end of the connecting piece 53 are provided with through holes 54, and the positioning piece 7 can be inserted into the strip-shaped holes 61 and the through holes 54 in a matching mode. When the upper back 52 is inserted into the inside of the outer frame 6 through the connecting member 53, the positioning member 7 is inserted into the bar-shaped hole 61 and the through-hole 54 of the connecting member 53, thereby achieving the position fixing.

Further, in a preferred embodiment, the ergonomic foldable chair of the preferred embodiment further comprises: the chair comprises a first control device 81, a seat cushion adjusting rod 82 and a backrest adjusting rod 83, wherein the first control device 81 is arranged at the joint of the seat cushion 2 and the chair leg 1. The cushion adjusting rod 82 is connected to the first control device 81, and the cylinder is controlled to be lifted up and down by the cushion adjusting rod 82. The backrest adjustment lever 83 is connected to the first control device 81, and the inclination angle of the lower backrest 51 is controlled by the backrest adjustment lever 83. The cushion 2 is driven by the cushion adjusting rod 82 and the backrest adjusting rod 83 to realize height adjustment, and the backrest 51 is driven to realize angle adjustment so as to adapt to the comfort of different people. Of course, the control form of the seat cushion adjusting rod 82 and the backrest adjusting rod 83 can be a conventional form, and only the height and angle adjustment needs to be satisfied.

Further, in a preferred embodiment, the ergonomic foldable chair of the preferred embodiment further comprises: and a second control device 91, wherein the second control device 91 is arranged at the joint of the upper backrest 52 and the headrest 4. The second control device 91 is provided with a control switch 92, and the headrest 4 is controlled to move up and down by the control switch 92 so as to adapt to the comfort of different people. Of course, the control form of the second control device 91 may be a conventional form, and only the height and angle adjustment is required.

On the basis of the above, the present invention also has the following usage modes:

referring to fig. 4a to 4c, when the folding is not in use:

the method comprises the following steps: the securing member 7 is released so that the upper backrest 52 together with the link 53 is moved upward relative to the lower backrest 51.

Step two: when the through hole 54 of the link 53 moves upward to a position close to the upper end of the bar hole 61, since the upper end of the outer frame 6 is higher than the upper end surface of the lower backrest 51, the upper backrest 52 is rotated relative to the lower backrest 54 by the link 53, so that the upper backrest 52 is close to or close to the seat cushion 2, and the seat foldability is realized.

Step three: the positioning member 7 is tightened to secure the position of the upper back 52.

When in use, the steps are operated in reverse.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. A foldable ergonomic chair comprising:

chair legs;

the cushion is arranged at the upper end of the chair leg;

the two handrails are connected with the left end and the right end of the cushion; it is characterized by also comprising:

a backrest rotatably adjacent to said seat cushion or remote from said seat cushion;

the headrest is arranged at the upper end of the backrest;

the backrest includes:

the lower backrest is connected with the rear end of the seat cushion;

the upper backrest is connected with the lower backrest in a vertically movable mode, and meanwhile, the upper backrest is rotatably connected with the lower backrest.

2. The foldable ergonomic chair according to claim 1, wherein the lower backrest is provided with an outer frame penetrating in a vertical direction, and the outer frame is provided with a bar-shaped hole in a vertical direction.

3. The foldable ergonomic chair of claim 2 wherein the upper end of the outer frame and the upper end of the bar-shaped hole are both higher than the lower backrest.

4. The foldable ergonomic chair of claim 3 wherein said upper backrest is provided with a connector which can be inserted into said outer frame in a vertical direction, and said upper backrest is rotatably connected to the upper end of said outer frame through said connector.

5. The foldable ergonomic chair of claim 4, further comprising: the lower end of the connecting piece is provided with a through hole, and the positioning piece can be inserted into the strip-shaped hole and the through hole in a matched mode.

6. The foldable ergonomic chair of claim 1, further comprising:

the first control device is arranged at the joint of the seat cushion and the chair legs;

the cushion adjusting rod is connected with the first control device and controls the cushion to lift up and down;

the backrest adjusting rod is connected with the first control device and controls the lower backrest to incline.

7. The foldable ergonomic chair of claim 1, further comprising:

and the second control device is arranged at the joint of the upper backrest and the headrest and controls the headrest to move along the vertical direction.