CN216393557U - Stand chair with adjustable backrest angle - Google Patents

Abstract

The utility model provides a desk chair with an adjustable backrest angle, which comprises a seat frame, seat cloth and a backrest, wherein the seat cloth is assembled on the seat frame; the rear end of the seat frame is equipped with a support tube, and the backrest is hinged to the support tube to realize angle adjustment in the front-rear direction. When the user sits down, the back leans against the backrest, and along with the pitching action of the user, the backrest can swing back and forth in a self-adaptive manner to adjust the angle, so that the back and the waist of the user are relaxed, and the product comfort is improved.

Description

Stand chair with adjustable backrest angle

Technical Field

The utility model relates to the field of seats, in particular to a table chair with an adjustable backrest angle.

Background

Currently, with the rapid development of social productivity, the physical enjoyment and mental pursuit of people are greatly improved, and a large number of sports competitions, large concerts, evenings and the like are held more and more, so that derivatives such as stands and stands chairs are also promoted.

However, the conventional grandstand seat is generally formed by one-step die-casting of integral hard plastic or by combining a non-detachable hard framework and a soft cloth cover, the backrest of the grandstand seat is fixed at a fixed angle, and the grandstand seat is tired and cannot be well stretched after being used for a long time.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a viewing desk chair with an adjustable backrest angle to solve the above problems, wherein when people lean backwards, the backrest angle can be adjusted to relax the back and waist of the user, and the product comfort is improved.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a desk chair with an adjustable backrest angle comprises a seat frame, seat cloth and a backrest, wherein the seat cloth is assembled on the seat frame; the rear end of the seat frame is equipped with a support tube, and the backrest is hinged to the support tube to realize angle adjustment in the front-rear direction.

Furthermore, the number of the supporting tubes is two, and the two supporting tubes are respectively assembled at the left side and the right side of the rear end part of the seat frame; the backrest is hinged with the two supporting tubes at the same time.

Furthermore, the backrest is composed of two backrest pipes arranged in parallel and a backrest supporting pipe which is arranged between the two backrest pipes and connected with the two backrest pipes, and the two backrest pipes correspond to the two supporting pipes one by one and are hinged through a hinge.

Furthermore, the articulated elements are provided with a concave surface and an articulated part which is arranged away from the concave surface, the concave surface of the articulated elements is fixedly attached to the backrest tube of the backrest, and the articulated part of the articulated elements is articulated with the support tube.

Furthermore, the articulated part of articulated elements is U type articulated part, has seted up first articulated shaft hole on the U type articulated part, the top portion of stay tube embolias in the U type articulated part to set up with the first articulated shaft hole corresponding second articulated shaft hole, still include the articulated shaft, the articulated shaft passes corresponding first articulated shaft hole and second articulated shaft hole.

Further, the number of the backrest support pipes is at least two.

Furthermore, the supporting tube is hinged on the seat frame, and can be switched between an unfolding position perpendicular to the seat frame and a folding position folded forwards to be attached to the seat frame.

Furthermore, the bottom end of the supporting tube is fixed with a connecting iron piece and is hinged to the seat frame through the connecting iron piece, and when the supporting tube is in the unfolding position, the connecting iron piece is abutted against the seat frame to limit the backward swinging of the supporting tube.

Further, the seat frame has a ground section at the bottom and a cloth support section above the ground section, and the seat cloth is assembled to the cloth support section of the seat frame.

Furthermore, a hook is further arranged on the seat frame.

Through the technical scheme provided by the utility model, the method has the following beneficial effects:

the utility model provides a stand chair articulates the back in on the stay tube, when the user sat down, the back leaned on the back, along with user's every single move action, the back can the self-adaptation swing back and forth carry out angle of adjustment, relax user's back and waist, improved the product travelling comfort.

Drawings

FIG. 1 is a first schematic structural view of a first embodiment of a chair with a folding seat in an unfolded state, wherein a seat cloth structure is hidden;

FIG. 2 is a second schematic structural view of the first embodiment of the folding chair in the unfolded state, wherein the seat cloth structure is hidden;

FIG. 3 is a third schematic structural view of the first embodiment of the table chair in a deployed state, in which the seat cloth structure is hidden;

FIG. 4 is a schematic structural view of the first embodiment of the folding and stowing seat chair, with the seat cloth structure hidden;

FIG. 5 is a schematic structural view of a hinge according to a first embodiment;

FIG. 6 is a schematic view showing the assembly of a seat frame and a seat cloth of the first embodiment of the chair;

FIG. 7 is a schematic structural view of a second embodiment of the chair with a seat cloth structure hidden;

FIG. 8 is a schematic view showing the assembly of the seat frame and the seat cloth of the second embodiment of the revolving chair;

fig. 9 is a schematic view showing the assembly of the seat frame and the seat cloth at another angle according to the second embodiment.

Detailed Description

To further illustrate the various embodiments, the utility model provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The utility model will now be further described with reference to the accompanying drawings and detailed description.

Example one

Referring to fig. 1 to 6, the present embodiment provides a viewing desk chair with an adjustable backrest angle, which includes a seat frame 10, a seat cloth 60, and a backrest 20, the seat cloth 60 being assembled to the seat frame 10; the rear end of the seat frame 10 is equipped with a support pipe 30, and the backrest 20 is hinged to the support pipe 30 to perform angle adjustment in the front-rear direction, as shown in fig. 1 to 3, the backrest 20 is gradually tilted backward to adjust the angle. When a user sits down, the back leans against the backrest 20, the backrest can swing back and forth in a self-adaptive manner to adjust the angle along with the pitching action of the user, the back and the waist of the user are relaxed, and the comfort of the product is improved.

Specifically, in this embodiment, the number of the support tubes 30 is two, and the two support tubes are respectively assembled on the left and right sides of the rear end portion of the seat frame 10; the backrest 20 is hinged to both support tubes 30. Thus, the backrest 20 can be stably supported, and the structure is more stable.

Correspondingly, in order to better hinge the two support tubes 30, the backrest 20 is composed of two backrest tubes 21 arranged in parallel and a backrest support tube 22 located between the two backrest tubes 21 and connecting the two backrest tubes 21, the two backrest tubes 21 correspond to the two support tubes 30 one by one and are hinged through a hinge 40, and the backrest 20 is simple in structure.

More specifically, the number of the backrest support tubes 22 is at least two, and in this embodiment, the number of the backrest support tubes 22 is two, and two or more than two backrest support tubes 22 can better fix the structures of the two backrest tubes 21, so that the structure of the backrest 20 is more stable, and at the same time, a good support function can be achieved.

Of course, in other embodiments, the number, arrangement position, and specific structure of the backrest 20 of the support tube 30 may not be limited thereto.

Further, as shown in fig. 5, the hinge 40 has a concave surface 41 and a hinge portion 43 disposed away from the concave surface 41, the concave surface 41 of the hinge 40 is fixedly attached to the backrest tube 21 of the backrest 20, specifically, the hinge 40 is provided with a plurality of connecting holes 42 penetrating through the concave surface 41, and after the concave surface 41 of the hinge 40 is attached to the backrest tube 21 of the backrest 20, the connecting holes 42 are penetrated through by a fastening member (e.g., a bolt) and fixed to the backrest tube 21 of the backrest 20, so as to fix the hinge 40 to the backrest tube 21.

The hinge portion 43 of the hinge member 40 is a U-shaped hinge portion, the U-shaped hinge portion is provided with a first hinge shaft hole 44, the top end portion of the support tube 30 is sleeved in the U-shaped hinge portion, and is provided with a second hinge shaft hole (not shown) corresponding to the first hinge shaft hole 44, and further comprises a hinge shaft (not shown) passing through the corresponding first hinge shaft hole 44 and the second hinge shaft hole. So set up, 360 rotations can be carried out on the stay tube 30 to back 20, and the angle control range is big, and the structure realizes simply. Of course, in other embodiments, the structure and the hinge manner of the hinge element 40 are not limited to this, for example, the backrest tube 21 may be disposed inside the support tube 30, the backrest tube 21 and the support tube 30 are provided with corresponding hinge holes, the hinge element 40 may be directly a hinge shaft, the hinge shaft is disposed in the hinge holes of the backrest tube 21 and the support tube 30, the backrest 20 can be hinged well, and the rotation of the backrest 20 is not limited by the support tube 30, which is also a preferable scheme.

Further, the support tube 30 is hinged to the seat frame 10, and is capable of being switched between a deployed position perpendicular to the seat frame 10 (as shown in fig. 1 to 3) and a folded position folded forward to be attached to the seat frame 10 (as shown in fig. 4). Thus, the folding and storage of the chair for grandstands can be realized, that is, when the chair for grandstands is stored, on the basis of fig. 1, the backrest 20 is rotated to the rear part of the support tube 30, and then the support tube 30 is folded forward, so that the folding and storage of the chair for grandstands can be realized, and the structure after the storage is as shown in fig. 4.

More specifically, in this embodiment, the bottom end of the supporting tube 30 is fixed with a connecting iron 50, and is hinged to the seat frame 10 through the connecting iron 50, and when the supporting tube 30 is in the unfolded position, the connecting iron 50 abuts against the seat frame 10 to limit the backward swinging of the supporting tube 30, so that the structure is simple, and the operation is simple and convenient.

Of course, in other embodiments, the connection structure of the support tube 30 and the seat frame 10 is not limited thereto, for example, the support tube 30 may be hinged to the seat frame 10 by other hinge structures, or the support tube 30 may be directly fixed to the seat frame 10 without being folded, etc.

Further, the seat frame 10 has a ground section at the bottom and a cloth support section above the ground section, and the seat cloth 60 is assembled to the cloth support section of the seat frame 10. In this embodiment, the bottom of the seat frame 10 is a four-frame structure formed by connecting four struts (a left strut 111, a right strut 112, a front strut 113, and a rear strut 114 on the left and right sides, respectively) end to end, and the left strut 111 and the right strut 112 are located below as landing sections; the seat cloth supporting sections are formed by the seat frame tubes 12 distributed on the left side and the right side, specifically, the seat frame tubes 12 are provided with straight sections 121 located in the middle section and bending sections 122 located at the two ends, the bending sections 122 are bent downwards to be connected with the floor sections, so that the straight sections 121 of the seat frame tubes 12 are higher than the floor sections, and the seat cloth 60 is assembled between the straight sections 121 of the left and the right seat frame tubes 12, so that the seat cloth 60 has a certain distance from the ground, and therefore a user can not directly abut against the bottom surface after sitting, and the comfort level is improved.

Further, still be provided with couple 70 on the seat frame 10, specifically, front end branch 113 is formed with couple fixed block 115 in the seat frame, is equipped with the through-hole (not shown) on the couple fixed block 115, and couple 70 one end is passed the through-hole of couple fixed block 115 and is fixed through the nut, and couple 70 can block on the stand, prevents that the people from lying when the back, and the chair slides.

Example two

The present embodiment provides a viewing desk chair with adjustable backrest angle, which has substantially the same structure as the first embodiment, except that: referring to fig. 7 to 9, in the present embodiment, the seat frame 10 specifically includes side frame tubes located at left and right sides and a connecting tube 15 located at front and rear ends and connecting the left and right side frame tubes, the side frame tubes are annular frame tubes formed by bending a single tube, and have a lower tube section 14 located below and an upper tube section 13 located above, the lower tube sections 14 of the two side frame tubes serve as ground sections to be supported on the ground, the upper tube sections 13 of the two side frame tubes serve as seat cloth supporting sections, and the seat cloth 60 is assembled between the upper tube sections 13 of the two side frame tubes, so that the seat cloth 60 has a certain distance from the ground, and thus, a user does not directly abut on the bottom surface after sitting, and comfort is improved.

While the utility model has been particularly shown and 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 as defined by the appended claims.

Claims (10)

1. A desk chair with an adjustable backrest angle comprises a seat frame, seat cloth and a backrest, wherein the seat cloth is assembled on the seat frame; the method is characterized in that: the rear end of the seat frame is equipped with a support tube, and the backrest is hinged to the support tube to realize angle adjustment in the front-rear direction.

2. The adjustable back angle desk chair of claim 1, wherein: the number of the supporting tubes is two, and the two supporting tubes are respectively assembled at the left side and the right side of the rear end part of the seat frame; the backrest is hinged with the two supporting tubes at the same time.

3. The adjustable back angle viewing platform chair of claim 2, wherein: the backrest is composed of two backrest pipes arranged in parallel and a backrest supporting pipe which is arranged between the two backrest pipes and connected with the two backrest pipes, and the two backrest pipes correspond to the two supporting pipes one by one and are hinged through a hinge.

4. The adjustable back angle desk chair of claim 3, wherein: the articulated elements are provided with a concave surface and an articulated part which is arranged away from the concave surface, the concave surface of the articulated elements is fixedly attached to a backrest tube of the backrest, and the articulated part of the articulated elements is articulated with the support tube.

5. The adjustable back angle desk chair of claim 4, wherein: the hinge part of the hinge piece is a U-shaped hinge part, a first hinge shaft hole is formed in the U-shaped hinge part, the top end part of the supporting tube is sleeved in the U-shaped hinge part, a second hinge shaft hole corresponding to the first hinge shaft hole is formed in the supporting tube, and the hinge device further comprises a hinge shaft which penetrates through the corresponding first hinge shaft hole and the second hinge shaft hole.

6. The adjustable back angle desk chair of claim 3, wherein: the number of the backrest support tubes is at least two.

7. The adjustable back angle desk chair of claim 1, wherein: the supporting tube is hinged on the seat frame and can be switched between an unfolding position perpendicular to the seat frame and a folding position folded forwards to be attached to the seat frame.

8. The adjustable back angle desk chair of claim 7 wherein: the bottom end of stay tube is fixed with the connection ironware to through connect ironware and articulate on the seat frame, when the stay tube was in the expansion position, the connection ironware supports and leans on in order to restrict the backward swing of stay tube on the seat frame.

9. The adjustable back angle desk chair of claim 1, wherein: the seat frame has a ground section at the bottom and a seat cloth supporting section above the ground section, and the seat cloth is assembled on the seat cloth supporting section of the seat frame.

10. The adjustable back angle desk chair of claim 1, wherein: the seat frame is also provided with a hook.

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