Seat backrest waist bag structure convenient to disassemble, assemble and replace

Abstract

The utility model discloses a seat backrest waist bag structure convenient to disassemble, assemble and replace, a first screw hole capable of being disassembled and assembled is designed in the position, close to the middle, of a backrest frame, a disassembling and assembling device is installed and connected at the position of the first screw hole, and the disassembling and assembling device is divided into a first disassembling and assembling device and a second disassembling and assembling device. A first connecting hole corresponding to the first screw hole is formed in the edge of the first dismounting device, a hollowed-out positioning hole is designed in the edge of the other end of the first dismounting device, a circular positioning column is designed at one end of the second dismounting device, and a transverse limiting groove is designed in the periphery of the hollowed-out positioning hole; the detachable waist bag has the advantages that the waist bag and the backrest can be separated independently, if a motor in the waist bag is damaged, the waist bag can be replaced independently, and the detachable waist bag is convenient and practical in design, convenient to use and high in practicability. The cost is low, and the production cost is reduced for manufacturers.

Description

Technical Field

[0001] This utility model relates to the field of furniture and chair technology, specifically a structure for easily disassembling and replacing the backrest and lumbar support of a chair. Background Technology

[0002] In the furniture and chair industry, electric chairs and lumbar supports are becoming increasingly popular. These chairs integrate the motor into the lumbar support, allowing for adjustments to the body at different angles. However, this design makes replacement inconvenient. When the internal motor fails, the entire backrest needs to be replaced because many manufacturers use a one-piece design for the backrest and lumbar support, significantly increasing costs for consumers and hindering manufacturers from providing replacement services. Utility Model Content

[0003] The purpose of this utility model is to provide a convenient disassembly and replacement structure for the lumbar support of a seat back, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A convenient lumbar support structure for disassembling and replacing a seat back includes a backrest frame. Near the center of the backrest frame is a first screw hole for disassembly and assembly. A disassembly / assembly tool is installed and connected to the first screw hole. The disassembly / assembly tool consists of a first disassembly / assembly tool and a second disassembly / assembly tool. The first disassembly / assembly tool has a first connecting hole on its edge corresponding to the first screw hole. A hollow positioning hole is designed on the other end of the first disassembly / assembly tool. A circular positioning post is designed on one end of the second disassembly / assembly tool. A transverse limiting groove is designed around the hollow positioning hole. The first disassembly / assembly tool and the circular positioning post are inserted into the hollow positioning hole, and the second disassembly / assembly tool is inserted into the transverse limiting groove.

[0006] To further explain, the interior of the circular positioning post has a built-in internal threaded hole, and the lower part of the hollow positioning hole has a second screw hole. The internal threaded hole and the second screw hole correspond to each other and can be locked with screws.

[0007] To further explain, a supporting rib is designed below the transverse limiting groove.

[0008] In this embodiment of the utility model, the first disassembly and assembly device is connected to the backrest through the first screw hole and the first connecting hole. The hollow positioning hole on the first disassembly and assembly device, together with the circular positioning post, fixes the entire waist pack to the backrest. At the same time, due to the transverse limiting groove and the supporting rib, the waist will not shake in the disassembly and assembly device, nor will it slip off the circular positioning post. Finally, for installation, a screw can be inserted into the second screw hole to lock it in the internal thread hole, increasing stability.

[0009] The advantages of this utility model are that, through this easy-to-disassemble and replace design, the waist pack and backrest can be separated. If the motor inside the waist pack is damaged, the waist pack can be replaced separately. Consumers can independently change to different styles of waist packs according to their own preferences, satisfying their design needs for self-matching. In addition, this design is convenient and practical, and the low cost makes it suitable for manufacturers to reduce production costs. Attached Figure Description

[0010] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0011] Figure 1 A schematic diagram of a waist pack and backrest combination for a convenient disassembly and replacement of a seat back waist pack structure;

[0012] Figure 2 A schematic diagram of a waist pack assembly that allows for easy disassembly and replacement of the seat back waist pack structure;

[0013] Figure 3 A schematic diagram of the backrest connection position for a convenient disassembly and replacement of the seat back lumbar support structure;

[0014] Figure 4 A schematic diagram of a first and second disassembly device combined to facilitate the disassembly and replacement of a seat back lumbar support structure.

[0015] Figure 5 A schematic diagram of a first and second disassembly device combined to facilitate the disassembly and replacement of a seat back lumbar support structure. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please refer to Figure 1-3The backrest includes a backrest frame 1, which has a detachable first screw hole 11 near the center. A disassembly / removal device 2 is installed and connected to the first screw hole 11. The disassembly / removal device 2 is divided into a first disassembly / removal device 21 and a second disassembly / removal device 22. The first disassembly / removal device 21 has a first connecting hole 211 on its edge corresponding to the first screw hole 11. The other edge of the first disassembly / removal device 21 has a hollow positioning hole 23. One end of the second disassembly / removal device 22 has a circular positioning post 221. The hollow positioning hole 23 has a horizontal limiting groove 231 around its periphery. The first disassembly / removal device 21 and the circular positioning post 221 are inserted into the hollow positioning hole 23, and the second disassembly / removal device 22 is inserted into it through the horizontal limiting groove 231.

[0018] To further explain, the interior of the circular positioning post 221 has a built-in internal threaded hole 41, and the lower part of the hollow positioning hole 23 has a second screw hole 42. The internal threaded hole 41 and the second screw hole 42 correspond to each other and can be locked with screws.

[0019] To further explain, a supporting rib 43 is designed below the transverse limiting groove 231.

[0020] In this embodiment of the utility model, the first disassembly and assembly device 21 is connected to the backrest frame 1 through the first screw hole 11 and the first connecting hole 211. The hollow positioning hole 23 on the first disassembly and assembly device 21, together with the circular positioning post 221, fixes the entire waist bag to the backrest frame 1. At the same time, due to the transverse limiting groove 231 and the supporting rib 42, the waist will not shake in the disassembly and assembly device 2, nor will it slip off the circular positioning post 221. Finally, for installation, a screw can be inserted into the second screw hole to lock it in the internal thread hole, increasing stability.

[0021] The advantages of this utility model are that, through this easy-to-disassemble and replace design, the waist pack and backrest can be separated. If the motor inside the waist pack is damaged, the waist pack can be replaced separately. Consumers can independently change to different styles of waist packs according to their own preferences, satisfying their design needs for self-matching. In addition, this design is convenient and practical, and the low cost makes it suitable for manufacturers to reduce production costs.

[0022] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A structure for easily disassembling and replacing a seat back lumbar support, characterized in that: The backrest includes a backrest frame with a first screw hole near the center. A disassembly / removal device is installed in the first screw hole. The disassembly / removal device consists of a first disassembly / removal device and a second disassembly / removal device. The first disassembly / removal device has a first connecting hole on its edge corresponding to the first screw hole. The other edge of the first disassembly / removal device has a hollow positioning hole. One end of the second disassembly / removal device has a circular positioning post. A horizontal limiting groove is designed around the hollow positioning hole. The first disassembly / removal device and the circular positioning post are inserted into the hollow positioning hole, and the second disassembly / removal device is inserted into the hollow positioning hole through the horizontal limiting groove.

2. The lumbar support structure for easy disassembly and replacement of a seat back as described in claim 1, characterized in that, The circular positioning post has a built-in internal threaded hole at its lower part, and a second screw hole is designed at the lower part of the hollow positioning hole. The internal threaded hole and the second screw hole correspond to each other and can be locked with screws.

3. The lumbar support structure for easy disassembly and replacement of a seat back as described in claim 1, characterized in that, A supporting rib is designed below the transverse limiting groove.

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