CN219479623U

CN219479623U - Chair back connecting structure

Info

Publication number: CN219479623U
Application number: CN202320559067.3U
Authority: CN
Inventors: 朱正根; 吴启帆
Original assignee: Foshan Sitzone Furniture Co ltd
Current assignee: Foshan Sitzone Furniture Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-08-08
Anticipated expiration: 2033-03-20

Abstract

The utility model discloses a chair back connecting structure, comprising: the back support is fixedly connected with the chair seat; the chair back is rotatably arranged at the bottom of the chair back, a soft rubber piece is arranged between the chair back and the back support, the soft rubber piece is positioned on the rotating path of the chair back, one end of the soft rubber piece is abutted with the chair back, and the other end of the soft rubber piece is abutted with the back support. The chair back is rotatably arranged on the chair seat, the rotation rigidity of the chair seat is small, the chair back can be driven to rotate backwards when a user reclines, and soft rubber parts are arranged on the rotation path of the chair back and are respectively abutted with the chair back and the back support, so that the backward rotation of the chair back can be buffered, and the user can recline more comfortably.

Description

Chair back connecting structure

Technical Field

The utility model relates to the technical field of chairs, in particular to a chair back connecting structure.

Background

In the related art, a chair back for a seated user to recline and support is arranged on the chair seat, in some related art, the chair back is arranged on the chair seat, the seated user leans backwards by leaning back by means of self weight to drive the chair back, but because the rigidity of the backward rotation of the chair back is larger, the acting force required by the seated user to drive the chair back to incline backwards is larger, and the problem of poor comfort of use exists.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the chair back connecting structure, and the chair seat of the chair back connecting structure has small rotation rigidity and is more comfortable for the user to recline.

According to an embodiment of the utility model, a chair back connecting structure comprises:

the back support is fixedly connected with the chair seat;

the chair comprises a chair back, wherein the bottom of the chair back is rotatably arranged on the chair seat, a soft rubber piece is arranged between the chair back and the back support, the soft rubber piece is positioned on a rotating path of the chair back, one end of the soft rubber piece is abutted to the chair back, and the other end of the soft rubber piece is abutted to the back support.

The chair back connecting structure provided by the embodiment of the utility model has at least the following beneficial effects: the chair back is rotatably arranged on the chair seat, the rotation rigidity of the chair seat is small, the chair back can be driven to rotate backwards when a user reclines, and soft rubber parts are arranged on the rotation path of the chair back and are respectively abutted with the chair back and the back support, so that the backward rotation of the chair back can be buffered, and the user can recline more comfortably.

According to the chair back connecting structure, two ends of the soft rubber piece are respectively in plug-in fit with the chair back and the back support.

According to the chair back connecting structure, one end of the soft rubber piece is provided with the first plug-in connection part, the other end of the soft rubber piece is provided with the second plug-in connection part, the chair back is provided with the first plug-in connection groove matched with the appearance of the first plug-in connection part, and the back support is provided with the second plug-in connection groove matched with the appearance of the second plug-in connection part.

According to the chair back connecting structure, a deformation groove is formed in one side, away from the chair seat, of the soft rubber piece.

According to the chair back connecting structure, the connecting seat is arranged on one side, facing the chair seat, of the chair back, the connecting seat is located in the middle of the chair back, the top of the back support is provided with the hinging seat, and the connecting seat is connected with the hinging seat through the rotating shaft.

According to the chair back connecting structure, the buffer column is further arranged between the connecting seat and the chair back, and two ends of the buffer column are respectively abutted with the connecting seat and the chair back.

According to the chair back connecting structure, two buffer columns are arranged at intervals along the direction parallel to the central line of the rotating shaft.

According to the chair back connecting structure, the chair back comprises a first back frame and a second back frame, the first back frame is located above the second back frame, the bottom of the first back frame is connected with the back support, and the second back frame is installed on the first back frame.

According to the chair back connecting structure, a lumbar support is arranged on one side, facing the center of the chair seat, of the second back frame, and the lumbar support is adjustably mounted on the second back frame along the vertical direction.

According to the chair back connecting structure, the first arc-shaped plate and the second arc-shaped plate are sequentially arranged on one side, facing the center of the chair seat, of the second back frame, the first arc-shaped plate is provided with the strip-shaped groove extending along the vertical direction, the waist rest is connected with the adjusting block, the adjusting block is slidably arranged in the strip-shaped groove and is in step-by-step clamping fit with the first arc-shaped plate, and the second arc-shaped plate penetrates through the waist rest and is used for guiding the vertical movement of the waist rest.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a chair back connecting structure according to an embodiment of the present utility model;

FIG. 2 is a first exploded view of the chair back attachment structure of the present utility model;

FIG. 3 is a second exploded view of the chair back attachment structure of the present utility model;

fig. 4 is an exploded view of a second back frame connecting structure of the chair back connecting structure according to the embodiment of the present utility model.

Reference numerals illustrate:

a back support 100; a second socket 101; a soft rubber member 110; a deformation groove 1101; a first plug-in portion 111; a second plug-in portion 112; a connection base 120; a hinge base 130; a rotation shaft 131;

a seat 200;

a seatback 300; a first back frame 310; a first insertion groove 3101; a buffer column 311; a second back frame 320; a first arcuate plate 321; a bar-shaped groove 3211; a clamping groove 3212; a second arcuate plate 322; a lumbar support 323; an adjustment block 330;

a fixing plate 410; an extension plate 420.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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 utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

For this reason, as shown in fig. 1 to 3, the backrest connecting structure provided by the present utility model includes a back support 100 and a backrest 300, wherein the back support 100 is fixedly connected with the seat 200, and the bottom of the backrest 300 is rotatably mounted on the seat 200. And, be provided with the flexible glue spare 110 between back of the chair 300 and the back support 100, the flexible glue spare 110 is located the rotation route of back of the chair 300, and the one end of flexible glue spare 110 is in butt joint with back of the chair 300, and the other end is in butt joint with back support 100. It is easy to understand that the seat back 300 is rotatably mounted on the seat base 200, the rotation rigidity of the seat base 200 is small, the seat back 300 can be driven to rotate backwards when the user leans back, and the soft rubber member 110 is arranged on the rotation path of the seat back 300, and the soft rubber member 110 is respectively abutted with the seat back 300 and the back support 100, so that the backward rotation of the seat back 300 can be buffered, and therefore, the user leans back more comfortably. In some embodiments, the seat 200 is connected to a fixing plate 410 and an extension plate 420, the seat 200 is fixedly connected to the back support 100 through the fixing plate 410, and the seat 200 is rotatably connected to the backrest 300 through the extension plate 420. Specifically, one end of the fixing plate 410 is fixed to the seat 200, and the other end is fixed to the back bracket 100; the extension plate 420 is provided at both ends thereof with a first rotation shaft rotatably connected to the seat 200 and a second rotation shaft rotatably connected to the back 300, respectively.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the chair back 300 includes a first back frame 310 and a second back frame 320, the first back frame 310 is located above the second back frame 320, the bottom of the first back frame 310 is connected to the back support 100, the second back frame 320 is mounted on the first back frame 310, for example, a bump is provided at the top of the second back frame 320, a groove corresponding to the bump is provided at the bottom of the first back frame 310, and the bump is in plug-fit with the groove. And, the bottom of the second back frame 320 is rotatably connected to the second rotation shaft of the extension plate 420. It is easy to understand that the chair back 300 is divided into an upper frame body and a lower frame body, so that the size of a packing box required for splitting and packing products is effectively reduced, and the transportation cost is reduced. In some embodiments, the rotational connection between the first back frame 310 and the back support 100 can further increase the rotational angle of the chair back 300, for example, when the head of the user leans backward, the first back frame 310 can also rotate backward by a small margin, so as to further improve the sitting comfort of the user. In some embodiments of the present utility model, a hidden axis is designed between the first back frame 310 and the back support 100, so that the overall appearance is better, specifically, a connecting seat 120 is installed on a side of the first back frame 310 facing the seat 200, the connecting seat 120 is located at the bottom of the first back frame 310, a hinge seat 130 is disposed at the top of the back support 100, and the connecting seat 120 is connected to the hinge seat 130 through a hinge shaft 131. In addition, the rotating shaft 131 is disposed inside the connecting seat 120 and is not easy to be perceived.

In some embodiments of the present utility model, as shown in fig. 2 and 3, two ends of the flexible glue member 110 are respectively in plug-in connection with the first back frame 310 and the back support 100, so that the installation is more stable. In addition, the flexible glue member 110 is located at one side of the connecting seat 120 away from the seat 200, when the first back frame 310 rotates backwards, the flexible glue member 110 deforms, so that the rotation of the first back frame 310 can be buffered, and the comfort level of the user is further improved. Specifically, a first plugging portion 111 is disposed at one end of the flexible glue component 110, a second plugging portion 112 is disposed at the other end, a first plugging groove 3101 matching the shape of the first plugging portion 111 is formed in the first back frame 310, and a second plugging groove 101 matching the shape of the second plugging portion 112 is formed in the back support 100. The two ends of the soft rubber piece 110 are inserted and installed, so that the installation is more stable. Further, the side of the flexible glue member 110 facing away from the seat 200 is provided with a deformation groove 1101, which is beneficial to pressing the flexible glue member 110 to deform the flexible glue member 110 when the first back frame 310 rotates backwards. Alternatively, the soft rubber member 110 is a rubber member, which has good elasticity and durability.

In some embodiments of the present utility model, as shown in fig. 2 and 3, a buffer post 311 is disposed between the connection seat 120 and the first back frame 310, and two ends of the buffer post 311 respectively abut against the connection seat 120 and the chair back 300. In addition to the arrangement of the soft plastic member 110 for buffering the rotation between the first back frame 310 and the back bracket 100, the buffer post 311 provides a buffer for the connection between the first back frame 310 and the connection base 120. For example, the flexible glue member 110 is vertically arranged, and the buffer post 311 is horizontally arranged, so that the movement of the first back frame 310 can be better buffered, the rotation of the first back frame 310 is smoother, and the use of the seat is more comfortable. Further, two buffer columns 311 are provided, and the two buffer columns 311 are arranged at intervals along the direction parallel to the central line of the rotating shaft 131, so that the chair back 300 has a tilting function. In some embodiments, two buffer columns 311 are used as supporting points, when a human body leans on the chair back 300, the first back frame 310 can rotate left and right by a certain angle through the self weight of the human body, so that the user can use the chair more comfortably.

As shown in fig. 3 and 4, in some embodiments of the present utility model, a lumbar support 323 is provided on a side of the second back frame 320 facing the center of the seat 200, and can support the lumbar of the seated user to prevent the seated user from sitting with lumbago. In addition, the lumbar support 323 is mounted on the second back frame 320 in a vertical direction, and can be adjusted according to the needs of the sitting person, thereby improving the applicability of the lumbar support 323. In some embodiments, a first arc plate 321 and a second arc plate 322 are sequentially installed on one side of the second back frame 320 towards the center of the seat 200, the first arc plate 321 is provided with a bar-shaped groove 3211 extending along the vertical direction, the lumbar support 323 is connected with an adjusting block 330, the adjusting block 330 is slidably arranged in the bar-shaped groove 3211 and is in step-by-step clamping fit with the first arc plate 321, and the second arc plate 322 is arranged on the lumbar support 323 in a penetrating manner and is used for guiding the vertical movement of the lumbar support 323. Specifically, the part of the adjusting block 330 is inserted into the lumbar support 323 through a bar-shaped groove 3211 and fixed with the lumbar support 323, a plurality of clamping grooves 3212 are formed in the side wall of the bar-shaped groove 3211 at equal intervals along the vertical direction, and the adjusting block 330 is clamped with the clamping grooves 3212 so as to adjust the height of the lumbar support 323 at equal intervals along the vertical direction. It should be noted that, the first curved plate 321 is in a streamline design, and conforms to the lumbar curve of the human body, and the strip-shaped groove 3211 extends along the arc of the first curved plate 321. In addition, the second arc plate 322 can serve as a function similar to that of the reinforcing rib except for guiding the lumbar support 323, the rigidity of connection between the lumbar support 323 and the first arc plate 321 is enhanced, the lumbar support 323 is transferred through the second arc plate 322, the design is more flexible, the shape of the lumbar curve of a human body can be more conformed, and the lumbar support is more comfortable. Further, the lumbar support 323 and the second arc plate are provided with a plurality of strip-shaped heat dissipation grooves corresponding to the strip-shaped grooves 3211 of the first arc plate 321, so that the overall appearance of the product is better.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. The back of the chair connection structure, its characterized in that includes:

the back support is fixedly connected with the chair seat;

2. The seatback linkage of claim 1, wherein: and two ends of the soft rubber piece are respectively in plug-in fit with the chair back and the back support.

3. The seatback linkage of claim 2, wherein: one end of the soft rubber piece is provided with a first plug-in connection part, the other end of the soft rubber piece is provided with a second plug-in connection part, the chair back is provided with a first plug-in connection groove matched with the appearance of the first plug-in connection part, and the back support is provided with a second plug-in connection groove matched with the appearance of the second plug-in connection part.

4. A seatback linkage according to any one of claims 1 to 3, characterized in that: and a deformation groove is formed in one side of the soft rubber piece, which is away from the seat.

5. The seatback linkage of claim 1, wherein: the chair is characterized in that a connecting seat is arranged on one side, facing the chair seat, of the chair back, the connecting seat is located in the middle of the chair back, a hinge seat is arranged at the top of the back support, and the connecting seat is connected with the hinge seat through a rotating shaft.

6. The seatback linkage of claim 5, wherein: and a buffer column is further arranged between the connecting seat and the chair back, and two ends of the buffer column are respectively abutted with the connecting seat and the chair back.

7. The seatback linkage of claim 6, wherein: the two buffer columns are arranged at intervals along the direction parallel to the central line of the rotating shaft.

8. The seatback linkage of claim 1 or 5 or 6 or 7, wherein: the chair back comprises a first back frame and a second back frame, wherein the first back frame is located above the second back frame, the bottom of the first back frame is connected with the back support, and the second back frame is installed on the first back frame.

9. The seatback linkage of claim 8, wherein: the side of the second back frame facing to the center of the chair seat is provided with a waist rest, and the waist rest is adjustably arranged on the second back frame along the vertical direction.

10. The seatback linkage of claim 9, wherein: the second back frame towards one side at the seat support center is installed first arc and second arc in proper order, first arc is provided with the bar groove that extends along vertical direction, the waist is leaned on and is connected with the regulating block, the regulating block slide set up in the bar groove and with the step-by-step joint cooperation of first arc, the second arc wear to locate the waist leans on and is used for right the vertical motion direction that the waist leans on.