Chair frame backrest protective shell connected in buckling mode

Abstract

The utility model discloses a buckle type connection chair frame backrest protective shell, relates to the technical field of chair frame backrests, and comprises a chair frame backrest body, a groove and a protective shell body, the chair frame backrest body is internally provided with the groove, and the interior of the chair frame backrest body is connected with the protective shell body through the groove in an inserted mode. According to the chair frame backrest protection shell connected in a buckling mode, the mode that the inserting grooves and the sliding grooves in the inserting blocks are connected with the connecting screw rods and the limiting blocks in a buckling mode is adopted, time is saved, convenience is achieved, operation is easy, the arc-shaped supporting rods and the connecting rods for reinforcing supporting are arranged in the protection shell, and the supporting effect of the protection shell body on the human body can be effectively improved; the supporting performance of the chair frame backrest body in the using process is improved, so that the chair frame backrest protection shell connected in the buckling mode solves the problems that an existing chair frame backrest protection shell is installed in a connecting bolt mode, time and labor are wasted, meanwhile, the working efficiency is affected, and maintenance is tedious and inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of chair frame backrests, in particular to a chair frame backrest protective shell with snap-on connection. Background Art

[0002] The chair frame backrest is the part of the chair for the back and neck to lean on. It is an important component of the chair. It is located behind the seat and is used to support the back and neck, allowing people to relax or find a comfortable posture, and provide comfortable support for the human body. The backrest has a variety of shapes, including flat, vertical, plate and bionic types. Ergonomic principles are taken into consideration during design to ensure that the user feels comfortable when leaning on it.

[0003] The existing chair frame backrest shell is fixed to the inner shell plate of the chair frame with connecting bolts. After the chair frame backrest shell is installed, a part of the connecting bolts will be exposed to the outside, which can easily scratch the user. In addition, the installation method using connecting bolts is time-consuming and labor-intensive, which will affect work efficiency and is cumbersome and inconvenient during maintenance. Utility Model Content

[0004] The purpose of the present invention is to provide a chair frame backrest cover with a snap-on connection to solve the problem in the above-mentioned background technology that the existing chair frame backrest cover is installed by connecting bolts, which is time-consuming and labor-intensive, affects work efficiency, and is cumbersome and inconvenient to maintain.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a snap-on chair frame backrest cover, comprising a chair frame backrest body, a groove, and a cover body, wherein the chair frame backrest body is provided with a groove, and the interior of the chair frame backrest body is plugged into the cover body through the groove;

[0006] The chair frame backrest body is provided with a plurality of threaded connection holes, and the interiors of the plurality of threaded connection holes are all threadedly connected to the connecting screws, and the tops of the plurality of connecting screws are connected to the limiting blocks, and the bottom of the chair frame backrest body is connected with a plurality of plug-in blocks, and the interiors of the plurality of plug-in blocks are provided with plug-in grooves and sliding grooves.

[0007] Preferably, the sliding groove provided inside the plug-in block is plugged into the connecting screw, and the plug-in block is plugged into the limiting block through the plug-in groove.

[0008] Preferably, the plug-in size of the outer side of the protective shell body matches the plug-in size of the inner groove of the chair frame backrest body, the size of the plug-in groove is larger than the size of the plug-in groove, and the size of the limit block is larger than the size of the connecting screw.

[0009] Preferably, outer sides of the plurality of plug-in blocks are respectively connected to the first connecting frame and the second connecting frame, and sliding rails are provided inside the first connecting frame and the second connecting frame.

[0010] Preferably, a return spring is symmetrically connected inside the sliding track, and a pushing block and a sliding block are slidably connected inside the sliding track.

[0011] Preferably, one end of the return spring is elastically connected to the pushing block, and one side of the pushing block is plugged into the sliding block on the adjacent side.

[0012] Preferably, an arc-shaped support rod is connected to the outer side of the sliding block, the pushing block and the sliding block are symmetrically arranged inside the sliding track, the outer side of the arc-shaped support rod is plugged into the sliding track, and the top of the arc-shaped support rod is connected to the connecting rod.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the chair frame backrest guard shell with a snap-on connection is connected by a snap-on method of the internal plug-in groove and sliding groove of the plug-in block and the connecting screw and the limit block, which is time-saving and convenient, simple to operate, and is internally provided with an arc-shaped support rod and a connecting rod for reinforced support, which can effectively enhance the supporting effect of the guard shell body on the human body and improve the support of the chair frame backrest body when in use, solving the problem that the existing chair frame backrest guard shell is installed by connecting bolts, which is time-consuming and labor-intensive, affects work efficiency, and is cumbersome and inconvenient during maintenance.

[0014] 1. The chair frame backrest cover with a snap-on connection is designed to facilitate the connection of the cover body. First, the connecting screw is threadedly connected to the threaded connection hole. Then, one side of the cover body is brought into contact with the groove inside the chair frame back body and pushed until the plug-in groove and the sliding groove inside the plug-in block at the bottom of the cover body are respectively plugged into the connecting screw and the limit block. When removing the cover body, the cover body is pushed again until the plug-in groove and the sliding groove are separated from the connecting screw and the limit block. The chair frame backrest cover with a snap-on connection is connected by a plug-in groove and a sliding groove inside the plug-in block with the connecting screw and the limit block. This is time-saving, convenient, and easy to operate.

[0015] 2. The chair frame backrest guard shell with a snap-on connection is designed to improve the supporting effect of the guard shell body. When the guard shell body is squeezed by external force, the inner wall of the guard shell body will abut against the outer side of the arc-shaped support rod and the connecting rod. At this time, the arc-shaped support rod will push the pushing block through the sliding blocks on both sides to squeeze the reset spring. After the reset spring is squeezed, it will generate thrust to increase the resistance and supporting force of the arc-shaped support rod. The chair frame backrest guard shell with a snap-on connection is equipped with a reinforced arc-shaped support rod and a connecting rod inside, which can effectively enhance the supporting effect of the guard shell body on the human body and improve the support of the chair frame backrest body when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the chair frame backrest of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the chair frame backrest of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the plug-in block of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the connection frame of the utility model.

[0020] In the figure: 1. Chair frame backrest body; 101. Groove; 2. Protective shell body; 3. Threaded connection hole; 301. Connecting screw; 302. Limit block; 4. Plug-in block; 401. Plug-in slot; 402. Sliding slot; 5. First connecting frame; 501. Second connecting frame; 502. Sliding track; 503. Return spring; 504. Push block; 505. Sliding block; 506. Arc-shaped support rod; 507. Connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 3 The utility model provides a technical solution: a snap-on connection chair frame backrest shell, comprising a chair frame backrest body 1, a groove 101 and a shell body 2, wherein the chair frame backrest body 1 has a groove 101 formed therein, and the chair frame backrest body 1 is plugged into the shell body 2 through the groove 101;

[0023] The chair frame backrest body 1 is provided with a plurality of threaded connection holes 3, and the interior of the plurality of threaded connection holes 3 are all threadedly connected to the connecting screw 301, and the tops of the plurality of connecting screws 301 are connected to the limiting blocks 302, and the bottom of the chair frame backrest body 1 is connected with a plurality of plug-in blocks 4, and the interiors of the plurality of plug-in blocks 4 are provided with plug-in grooves 401 and sliding grooves 402, and the sliding grooves 402 provided in the plug-in blocks 4 are plugged into the connecting screw 301, and the interior of the plug-in block 4 is plugged into the limiting block 302 through the plug-in groove 401, and the plug-in size of the outer side of the protective shell body 2 matches the plug-in size of the internal groove 101 of the chair frame backrest body 1, the size of the plug-in groove 401 is larger than the size of the plug-in groove 401, and the size of the limiting block 302 is larger than the size of the connecting screw 301.

[0024] In the specific implementation, in order to facilitate the connection of the shell body 2, the connecting screw 301 is first threadedly connected to the chair frame backrest body 1 through the threaded connection hole 3, and then one side of the shell body 2 is abutted against the groove 101 inside the chair frame backrest body 1 and pushed until the plug-in groove 401 and the sliding groove 402 on the inner side of the plug-in block 4 at the bottom of the shell body 2 are respectively plugged with the connecting screw 301 and the limit block 302, and the push and squeeze of the shell body 2 can be released. At this time, the shell body 2 can be completed. The protective shell body 2 is installed. When removing the protective shell body 2, push the protective shell body 2 again until the plug-in slot 401 and the sliding slot 402 on the inner side of the plug-in block 4 are separated from the connecting screw 301 and the limit block 302 respectively, and the protective shell body 2 can be easily removed. The chair frame backrest protective shell with a snap-on connection is connected by snapping the plug-in slot 401 and the sliding slot 402 inside the plug-in block 4 with the connecting screw 301 and the limit block 302, which is time-saving, convenient and easy to operate.

[0025] See Figure 3 and Figure 4 It can be seen that the outer sides of the multiple plug-in blocks 4 are respectively connected to the first connecting frame 5 and the second connecting frame 501, and the first connecting frame 5 and the second connecting frame 501 are both provided with sliding rails 502, and the sliding rails 502 are symmetrically connected with the return spring 503, and the sliding rails 502 are slidably connected with the push block 504 and the sliding block 505, and one end of the return spring 503 is elastically connected to the push block 504, and one side of the push block 504 is plugged into the sliding block 505 on the adjacent side, and the outer side of the sliding block 505 is connected to the arc support rod 506, and the push block 504 and the sliding block 505 are both symmetrically arranged inside the sliding rail 502, and the outer side of the arc support rod 506 is plugged into the sliding rail 502, and the top of the arc support rod 506 is connected to the connecting rod 507.

[0026] During specific implementation, in order to improve the supporting effect of the protective shell body 2, when the protective shell body 2 is squeezed by external force, the inner wall of the protective shell body 2 will abut against the outer side of the arc support rod 506 and the connecting rod 507, and then push the arc support rod 506 to the side where the sliding track 502 is located through the connecting rod 507. At this time, the arc support rod 506 will push the pushing block 504 through the sliding blocks 505 on both sides, squeezing the return spring 503. After the return spring 503 is squeezed, it will generate thrust, increasing the resistance to the movement of the arc support rod 506, thereby achieving the purpose of improving the supporting effect of the arc support rod 506 and the connecting rod 507. The chair frame backrest protective shell with a snap-on connection is internally provided with an arc support rod 506 and a connecting rod 507 for reinforced support, which can effectively improve the supporting effect of the protective shell body 2 on the human body and improve the support of the chair frame backrest body 1 when in use.

[0027] To sum up, when using the chair frame backrest protective shell with the snap-on connection, first thread the connecting screw 301 into the threaded connection hole 3, then abut and push one side of the protective shell body 2 against the groove 101 inside the chair frame backrest body 1 until the plug-in groove 401 and the sliding groove 402 on the inner side of the plug-in block 4 at the bottom of the protective shell body 2 are respectively plugged into the connecting screw 301 and the limit block 302, thereby completing the snap-on connection between the protective shell body 2 and the chair frame backrest body 1. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chair frame backrest protective shell with a snap-on connection, comprising a chair frame backrest body (1), a groove (101) and a protective shell body (2), characterized in that: A groove (101) is provided inside the chair frame backrest body (1), and the interior of the chair frame backrest body (1) is plugged into the protective shell body (2) via the groove (101); The chair frame backrest body (1) is provided with a plurality of threaded connection holes (3) inside, and the interiors of the plurality of threaded connection holes (3) are all threadedly connected to the connecting screws (301), and the tops of the plurality of connecting screws (301) are all connected to the limiting blocks (302), and the bottom of the chair frame backrest body (1) is connected with a plurality of plug-in blocks (4), and the interiors of the plurality of plug-in blocks (4) are provided with plug-in grooves (401) and sliding grooves (402).

2. The snap-fit ​​connection chair frame backrest cover according to claim 1, characterized in that: The sliding groove (402) provided inside the plug-in block (4) is plugged into the connecting screw (301), and the inside of the plug-in block (4) is plugged into the limiting block (302) via the plug-in groove (401).

3. The snap-fit ​​connection chair frame backrest cover according to claim 1, characterized in that: The plug-in size of the outer side of the protective shell body (2) matches the plug-in size of the inner groove (101) of the chair frame backrest body (1), the size of the plug-in groove (401) is larger than the size of the plug-in groove (401), and the size of the limit block (302) is larger than the size of the connecting screw (301).

4. The snap-fit ​​connection chair frame backrest cover according to claim 2, characterized in that: The outer sides of the plurality of plug-in blocks (4) are respectively connected to the first connection frame (5) and the second connection frame (501), and the first connection frame (5) and the second connection frame (501) are both provided with sliding rails (502) inside.

5. The snap-fit ​​connection chair frame backrest cover according to claim 4, characterized in that: A return spring (503) is symmetrically connected inside the sliding track (502), and a pushing block (504) and a sliding block (505) are slidably connected inside the sliding track (502).

6. The snap-fit ​​connection chair frame backrest cover according to claim 5, characterized in that: One end of the return spring (503) is elastically connected to the push block (504), and one side of the push block (504) is plugged into the sliding block (505) on the adjacent side.

7. The snap-fit ​​connection chair frame backrest cover according to claim 6, characterized in that: The outer side of the sliding block (505) is connected to an arc-shaped support rod (506), the pushing block (504) and the sliding block (505) are symmetrically arranged inside the sliding track (502), the outer side of the arc-shaped support rod (506) is plugged into the sliding track (502), and the top of the arc-shaped support rod (506) is connected to the connecting rod (507).

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