Hard chair back plate foaming mold and product thereof

Abstract

The utility model discloses a hard chair back plate foaming mold which comprises a mold body, a map bag and a tail link mounting point are designed on a chair back plate, a blind hole structure is arranged on the mold body corresponding to the map bag and the tail link mounting point on the chair back plate, a mounting column is coaxially and fixedly arranged in the blind hole structure, a nut is sleeved on the mounting column, and the mounting column is fixedly connected with the mold body. The nut is in close fit with the mounting column, and a gap is reserved between the nut and the inner wall of the blind hole structure. According to the utility model, the nuts are integrally foamed and formed on the chair back plate, and the self-tapping screws are matched with the nuts to realize the assembly of the map bag and the tail connector on the chair back plate, so that the problem that after the map bag, the tail connector and the chair back plate are disassembled and assembled for many times, the self-tapping screws and the foaming body of the chair back plate at the assembly position are easy to loosen and fall off is effectively solved; the detachable times of the self-tapping screw are greatly improved, and the rejection rate of products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive seats, and particularly relates to a foaming mold for a hard chair backboard and its product. Background Art

[0002] When the map pocket, tail link, bead, etc. of the conventional hard chair backboard need to be assembled with the chair backboard body, they can only be assembled and fixed by driving self-tapping screws into the hard polyurethane chair backboard body. After the map pocket, tail link, bead, etc. are disassembled and installed multiple times with the chair backboard, problems such as thread stripping and falling off are likely to occur between the self-tapping screws and the foamed chair backboard body at the assembly position, and the disassembly and installation durability of the assembly position cannot meet the requirements of customers. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model aims to provide a foaming mold for a hard chair backboard and its product to solve the problems that thread stripping and falling off are likely to occur between the self-tapping screws and the foamed chair backboard body at the assembly position after the map pocket, tail link and chair backboard are disassembled and installed multiple times, thereby reducing the scrap rate of the product.

[0004] To achieve the above object, the utility model provides a foaming mold for a hard chair backboard, including a mold body. Installation points for a map pocket and a tail link are designed on the chair backboard. Blind hole structures are provided at positions corresponding to the installation points of the map pocket and the tail link on the chair backboard on the mold body. An installation column is coaxially fixed in the blind hole structure. A nut is sleeved on the installation column. The nut and the installation column are in tight fit, and a gap is left between the nut and the inner wall of the blind hole structure.

[0005] In the above solution: the depth of the blind hole structure is 10 - 12 mm, the diameter is 18 - 20 mm, and a chamfer with a radius of 3 - 4 mm is provided at the bottom of the blind hole structure. The structure is simple and convenient to process.

[0006] In the above solution: the height of the installation column is the same as the depth of the blind hole structure, and the outer diameter of the installation column is 4 - 5 mm. The structure is simple and convenient to process. Since the nut and the installation column are in tight fit, an external force is required to separate the nut from the installation column during demolding.

[0007] In the above solution: the nut adopts an M5*8*15 type nut. A corresponding screw passes through the installation holes reserved on the map pocket and the tail link, and then is threadedly inserted into the nut on the chair backboard, so as to realize the installation of the map pocket and the tail link on the chair backboard.

[0008] The present utility model also provides a product produced by a rigid chair backrest foaming mold, which includes a chair backrest body. At the positions corresponding to the installation points of the map pocket and the tail connection on the chair backrest, raised structures are formed on the chair backrest body. Nuts are integrally foamed and formed in the raised structures, and the top surfaces of the nuts are exposed.

[0009] In the above solution: the foaming material used for the chair backrest body is polyurethane, which has excellent wear resistance, durability, comfort, waterproof and anti-fouling properties, and is easy to clean.

[0010] The beneficial effects of the present utility model are as follows: by integrally foaming and forming nuts on the chair backrest, and then using self-tapping screws to cooperate with the nuts to realize the assembly of the map pocket and the tail connection on the chair backrest, it effectively solves the problems that the self-tapping screws are prone to slipping teeth and falling off between the self-tapping screws and the foamed body of the chair backrest at the assembly position after multiple disassembly and assembly of the map pocket, the tail connection and the chair backrest. It greatly improves the number of times the self-tapping screws can be disassembled and assembled (the number of times that could be disassembled and assembled before improvement was 3 times; after improvement, it is ≥ 30 times), and reduces the scrap rate of the product. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the foaming mold.

[0012] Figure 2 It is an internal schematic diagram of the blind hole structure.

[0013] Figure 3 It is a schematic structural diagram of the rigid chair backrest. Detailed Embodiments

[0014] As Figure 1 -3 shows, a rigid chair backrest foaming mold, the main body is a mold body 1. Installation points of a map pocket and a tail connection are designed on the chair backrest. At the positions corresponding to the installation points of the map pocket and the tail connection on the chair backrest on the mold body 1, there is a blind hole structure 2. An installation column 3 is coaxially fixed in the blind hole structure. A nut 4 is sleeved on the installation column 3. The nut 4 and the installation column are in close fit, and there is a gap between the nut 4 and the inner wall of the blind hole structure 2.

[0015] Preferably, the depth of the blind hole structure 2 is 10 - 12 mm, the diameter is 18 - 20 mm, and a chamfer is provided at the bottom of the blind hole structure 2, and the chamfer radius is 3 - 4 mm. The structure is simple and the processing is convenient.

[0016] Preferably, the height of the installation column 3 is the same as the depth of the blind hole structure 2, and the outer diameter of the installation column 3 is 4 - 5 mm. The structure is simple and the processing is convenient. Since the nut 4 and the installation column 3 are in close fit, external force is required to separate the nut 4 from the installation column 3 during demolding.

[0017] Preferably, the nut 4 is an M5*8*15 type nut. A corresponding screw is passed through the mounting holes reserved on the map pocket and the tail connection, and then threadedly inserted into the nut on the chair backrest board, so as to realize the installation of the map pocket and the tail connection on the chair backrest board.

[0018] A product produced by a rigid chair backrest foaming mold, the main body is the chair backrest body 5. At the positions corresponding to the installation points of the map pocket and the tail connection on the chair backrest, a convex structure 6 is formed on the chair backrest body 5. A nut 4 is integrally foamed and formed in the convex structure 6, and the top surface of the nut 4 is exposed.

[0019] In the above solution: the foaming material used for the chair backrest body 5 is polyurethane, which has excellent wear resistance, durability, comfort, waterproof and anti-fouling properties, and is easy to clean.

[0020] In the utility model, the nut 4 is integrally foamed and formed on the chair backrest, and then a self-tapping screw is used to cooperate with the nut 4 to realize the assembly of the map pocket and the tail connection on the chair backrest, effectively solving the problem that the self-tapping screw is prone to slipping teeth and falling off between the self-tapping screw and the foamed body of the chair backrest at the assembly position after the map pocket, the tail connection and the chair backrest are disassembled and assembled multiple times, greatly increasing the number of times the self-tapping screw can be disassembled and assembled, reducing the scrap rate of the product, and extending the service life of the product.

Claims

1. A foaming mold for a hard seat back panel, comprising a mold body (1), wherein the seat back panel is provided with a map pocket and a mounting point for a tailpiece, and wherein: A blind hole structure (2) is provided on the mold body (1) at the location corresponding to the map pocket and the mounting point of the tail joint on the seat back panel, and a mounting column (3) is coaxially fixed in the blind hole structure. A nut (4) is mounted on the mounting column (3), and the nut (4) is tightly matched with the mounting column, and a gap is left between the nut (4) and the inner wall of the blind hole structure (2).

2. The rigid chair back foaming mold according to claim 1, characterized in that: The blind hole structure (2) has a depth of 10 to 12 mm and a diameter of 18 to 20 mm. The bottom of the blind hole structure (2) is provided with a chamfer, and the chamfer radius is 3 to 4 mm.

3. The hard chair back foaming mold according to claim 2, characterized in that: The height of the installation column (3) is consistent with the depth of the blind hole structure (2), and the outer diameter of the installation column (3) is 4 to 5 mm.

4. The rigid chair back foaming mold according to claim 1, characterized in that: The nut (4) is a M5*8*15 model nut.

5. A product produced by the rigid chair back foaming mold according to any one of claims 1 to 4, comprising a chair back body (5), characterized in that: A raised structure (6) is formed on the seat back body (5) at a location corresponding to the map pocket and the mounting point of the tail link on the seat back, and a nut (4) is integrally foamed in the raised structure (6), with the top surface of the nut (4) exposed to the outside.

6. The product produced by the rigid chair back foaming mold according to claim 5 is characterized in that: The foaming material used for the chair back plate body (5) is polyurethane.

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