A chair

Abstract

The utility model provides a kind of chair, it is related to furniture technical field, chair frame component: for the skeleton of chair;Backrest joint: including chair frame connecting part and backrest connecting part, are used to connect chair frame component and backrest component respectively, and backrest connecting part is groove body;Backrest component: including backrest plate and the flexible structure body connected with backrest plate, flexible structure body is at least set two groups, and flexible structure body is inserted in backrest connecting part and is connected, forms flexible support to backrest plate. By setting flexible structure body, realize the flexible connection between backrest plate and chair frame component, when user relies, backrest plate can be self-adapting adjustment according to user posture, match the dynamic change of human back, comply with ergonomics, with good comfort, and simple structure, cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a chair. Background Technology

[0002] Chairs are essential furniture in daily office work, home leisure, and public places, and their comfort and ergonomic performance are receiving increasing attention. Existing chairs mainly include solid wood chairs, fabric chairs, and office swivel chairs, etc. Their backrests and frames mostly adopt a rigid connection structure, that is, the backrest is fixed to the chair frame by screws, welding, or one-piece molding.

[0003] The existing technology has obvious drawbacks: First, the rigidly connected backrest cannot adapt to changes in the human body's sitting posture. When the user leans against it, the back and the backrest only make localized rigid contact. Prolonged use can easily lead to back muscle tension and poor blood circulation, which does not meet the needs of ergonomics. Second, even chairs with angle adjustment functions mostly rely on hydraulic rods or multi-position buckles to achieve fixed angle adjustment. The adjustment process is cumbersome and the adjustment range is limited. It is difficult to adapt to the dynamic changes of the human back in real time, and the cost is high.

[0004] Therefore, existing chairs are inadequate in terms of backrest dynamic adaptability, comfort, and ergonomic adaptability, and there is an urgent need for a technical solution that allows for flexible connection between the backrest and the frame with a controllable range of motion. Utility Model Content

[0005] The purpose of this invention is to provide a chair with a flexible backrest that can adapt to changes in the human sitting posture, offering advantages such as low cost and high comfort.

[0006] To solve the above problems, this utility model provides a chair, comprising:

[0007] Chair frame assembly: This is the skeleton of the chair, including the legs and the seat mounting part, on which the seat is mounted;

[0008] Backrest connector: includes a chair frame connector and a backrest connector, which are used to connect the chair frame assembly and the backrest assembly, respectively. The backrest connector is a groove.

[0009] Backrest assembly: includes a backrest panel and a flexible structure connected to the backrest panel. At least two sets of the flexible structure are provided. The flexible structure is inserted into the backrest connection part and connected to form a flexible support for the backrest panel.

[0010] The flexible structure can be made of any material with elastic deformation properties, such as rubber, silicone, etc.

[0011] By flexibly connecting the backrest panels, the backrest can adaptively adjust according to the user's posture when leaning against it, matching the dynamic changes of the human back, conforming to ergonomics, and providing good comfort.

[0012] Backrest panels can be made of hard materials such as wood or metal, or flexible structures such as mesh support.

[0013] According to one embodiment of the present invention, the chair frame connecting part is a rod-shaped structure that is inserted into the mounting hole provided in the chair frame assembly and then fixed by bolts.

[0014] According to one embodiment of the present invention, the flexible structure and the backrest connection part are connected by bolts. The flexible structure is provided with bolt holes, and the structure around the bolt holes is thickened to ensure the strength of the flexible structure and its service life. The threaded hole that mates with the bolt can be provided on the backrest plate or can be provided with a nut.

[0015] According to one embodiment of the present invention, the chair also includes a decorative cover, which is used to cover the bolts connecting the flexible structure and the backrest connection part. The backrest joint is provided with a decorative cover groove for accommodating the decorative cover, thereby improving the aesthetics by installing the decorative cover.

[0016] According to one embodiment of the present invention, the flexible structure is provided with a plurality of weight-reducing holes.

[0017] The design of weight-reducing holes can achieve weight reduction on the one hand, and make the flexible structure more easily deformable on the other.

[0018] According to one embodiment of the present invention, the side end of the backrest panel used for leaning is an arc surface.

[0019] According to one embodiment of the present invention, the backrest is inclined, and the flexible structure is distributed on one side of the backrest and close to the upper edge. The left and right distribution provides flexible support points on both sides, which ensures the self-adaptive effect of the backrest while also ensuring the stability of the backrest. The arrangement close to the upper edge allows for a large adjustable space at the bottom of the backrest.

[0020] According to one embodiment of the present invention, the groove of the backrest connecting part is provided with a slanted structure so that it can be in close contact with the backrest panel.

[0021] According to one embodiment of the present invention, the chair also includes a bottom cover, which is connected to the seat surface by bolts to fix the seat surface to the chair frame assembly.

[0022] According to one embodiment of the present invention, the flexible structure is provided with a plurality of screw holes arranged in a ring. The backrest assembly further includes a ring-shaped washer and self-tapping screws, the self-tapping screws being used to install the flexible structure onto the backrest panel.

[0023] Alternatively, the flexible structure and the backrest panel can be fixed by means of integral molding, adhesive bonding, or other methods.

[0024] According to one embodiment of the present invention, the legs of the chair frame assembly are equipped with semi-circular plugs, which are made of plastic or rubber to prevent the chair frame assembly from directly rubbing against the ground.

[0025] The beneficial effects of this utility model are that by setting a flexible structure, a flexible connection between the backrest and the chair frame assembly can be achieved. When the user leans on it, the backrest can adaptively adjust according to the user's posture, matching the dynamic changes of the human back, which is ergonomic, has good comfort, and has a simple structure, low cost, and high market competitiveness. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the exploded structure of the chair;

[0028] Figure 2 This is an exploded view of the backrest assembly.

[0029] Figure 3 This is a side view of the backrest connector.

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the backrest connector;

[0031] Figure 5 This is a schematic diagram of a flexible structure;

[0032] Figure 6 This is a side view of the chair.

[0033] In the diagram: 1. Decorative cover; 2. Backrest connector; 21. Backrest connection; 22. Decorative cover groove; 23. Chair frame connection; 3. Bolt; 5. Countersunk bolt; 6. Backrest assembly; 61. Self-tapping screw; 62. Annular washer; 63. Flexible structure; 631. Screw hole; 632. Bolt hole; 65. Nut piece; 66. Backrest panel; 7. Chair surface; 8. Chair frame assembly; 9. Base cover; 10. Bolt; 11. Semi-circular plug. Detailed Implementation

[0034] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0035]

Example 1

[0036] A type of chair, such as Figures 1-6 It includes a chair frame assembly 8, a backrest connector 2, a chair seat 7, and a backrest assembly 6.

[0037] The chair frame assembly 8 is the skeleton of the chair, preferably made of metal, and includes the legs and seat mounting part. The legs can be set as a roller structure or as a support leg. In this embodiment, the legs are set as four-legged support legs. The legs are tubular and a semi-circular plug 11 is inserted into them. The semi-circular plug 11 is made of plastic or rubber to prevent the chair frame assembly 8 from directly rubbing against the ground.

[0038] A seat 7 is installed on the seat mounting part. The seat 7 can be made of wood or mesh. In this embodiment, the chair also includes a bottom cover 9. The bottom cover 9 and the seat 7 are respectively located on the lower and upper sides of the seat mounting part. The bottom cover 9 and the seat 7 are connected by bolts 10 to fix the seat 7 to the chair frame assembly 8.

[0039] like Figure 4 Two sets of backrest connectors 2 are provided, preferably made of aluminum alloy. The backrest connector 2 includes a chair frame connecting part 23 and a backrest connecting part 21, which are used to connect the chair frame assembly 8 and the backrest assembly 6, respectively. The chair frame assembly 8 is tubular at the backrest connector 2, and the chair frame connecting part 23 is a rod-shaped structure that is inserted into the mounting hole provided in the chair frame assembly 8. After insertion, it is fixed by countersunk bolts 5.

[0040] The backrest connecting part 21 is a groove with a slanted structure at the groove opening, so that it can make close contact with the backrest panel 66.

[0041] The backrest connector 2 is provided with a decorative cover groove 22 for accommodating the decorative cover. The decorative cover 1 is used to cover the head of the bolt 3 that connects the flexible structure 63 and the backrest connection part 21, thereby improving the aesthetics.

[0042] like Figure 2 The backrest assembly 6 includes a backrest plate 66 and a flexible structure 63 connected to the backrest plate 66, as well as a nut piece 65, an annular washer 62 and a self-tapping screw 61 for engaging with the bolt 3.

[0043] The backrest panel 66 is an arc-shaped panel, with the side end used for leaning being an arc surface, forming a wrap around the back and improving comfort.

[0044] At least two sets of flexible structures 63 are provided. The flexible structures 63 are inserted into the backrest connecting part 21 and connected to form a flexible support for the backrest panel 66.

[0045] The flexible structure 63 can be made of any material with elastic deformation properties, such as rubber, silicone, etc.

[0046] The backrest panel 66 can be made of hard materials such as wood or metal, or a flexible structure such as mesh support.

[0047] The flexible structure 63 is connected to the backrest connecting part 21 by bolts 3. The flexible structure 63 has a groove for accommodating the nut piece 65, and bolt holes 632 are provided. The structure around the bolt holes 632 is thickened, such as... Figure 5 The thickened setting forms a stepped structure, thereby ensuring the strength of the flexible structure 63 and its service life.

[0048] Each flexible structure 63 is provided with four sets of screw holes 631, which are arranged in a ring. The backrest assembly 6 also includes an annular washer 62 and a self-tapping screw 61. The annular washer 62 is disposed between the flexible structure 63 and the head of the self-tapping screw 61. The self-tapping screw 61 is used to install the flexible structure 63 onto the backrest panel 66.

[0049] Optionally, the flexible structure 63 is provided with a number of weight-reducing holes (not shown in the figure). The weight-reducing holes are preferably located on the end face of the flexible structure 63 that contacts the backrest panel 66. The weight-reducing holes can achieve the weight-reduction effect on the one hand, and make the flexible structure 63 easier to deform on the other hand.

[0050] Alternatively, the flexible structure 63 and the backrest connection 21 can be fitted with either a clearance or an interference fit.

[0051] The backrest panel 66 is preferably inclined, and the flexible structure 63 is distributed on the left and right sides of one end face of the backrest panel 66 and close to the upper edge. The left and right distribution provides flexible support points on both sides, which ensures the self-adaptive effect of the backrest panel 66 and the stability of the backrest panel 66. The arrangement close to the upper edge allows for a large adjustment space in the lower part of the backrest panel 66 and makes the backrest panel 66 easier to adjust.

[0052] By flexibly connecting the backrest panels 66, the backrest can adaptively adjust according to the user's posture when leaning against it, such as adjusting the left and right tilt angle and the up and down tilt angle, matching the dynamic changes of the human back, conforming to ergonomics, and providing good comfort.

[0053] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A chair, characterized in that: include: Chair frame assembly (8): The frame of the chair on which the seat (7) is mounted; Backrest connector (2): includes a chair frame connector (23) and a backrest connector (21), which are used to connect the chair frame assembly (8) and the backrest assembly (6), respectively. The backrest connector (21) is a groove. Backrest assembly (6): includes a backrest panel (66) and a flexible structure (63) connected to the backrest panel (66). At least two sets of the flexible structure (63) are provided. The flexible structure (63) is inserted into the backrest connection part (21) for connection, forming a flexible support for the backrest panel (66).

2. The chair according to claim 1, characterized in that: The chair frame connecting part (23) is a rod-shaped structure that is inserted into the mounting hole provided in the chair frame assembly (8).

3. The chair according to claim 1, characterized in that: The flexible structure (63) is connected to the backrest connection (21) by bolts. The flexible structure (63) is provided with bolt holes (632), and the structure around the bolt holes (632) is thickened.

4. The chair according to claim 3, characterized in that: The chair also includes a decorative cover (1) for covering the bolts connecting the flexible structure (63) and the backrest connection (21), and the backrest joint (2) is provided with a decorative cover groove (22) for receiving the decorative cover.

5. The chair according to any one of claims 1-4, characterized in that: The flexible structure (63) is provided with several weight-reducing holes.

6. The chair according to any one of claims 1-4, characterized in that: The backrest panel (66) is inclined, and the flexible structure (63) is distributed on one side of the backrest panel (66) and close to the upper edge.

7. The chair according to claim 6, characterized in that: The groove of the backrest connecting part (21) is provided with a slanted structure so that it can make close contact with the backrest panel (66).

8. The chair according to claim 6, characterized in that: The side surface of the backrest (66) for leaning against is curved.

9. The chair according to any one of claims 3, 7, and 8, characterized in that: The flexible structure (63) is provided with a plurality of screw holes (631) arranged in a ring. The backrest assembly (6) also includes a ring washer (62) and a self-tapping screw (61). The self-tapping screw (61) is used to install the flexible structure (63) on the backrest panel (66).

10. The chair according to claim 1, characterized in that: The chair frame assembly (8) is fitted with a semi-circular head plug (11) at its feet.

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