Automobile seat backrest foaming piece and boss key matching structure

Abstract

The utility model relates to an automobile seat backrest foaming piece and boss key matching structure which comprises a seat backrest foaming piece and a boss key, an assembling groove is formed in the position, opposite to the boss key, of the seat backrest foaming piece, an annular smooth large arc is arranged on the periphery of the assembling groove, the top face of the smooth large arc is an arc face, and the boss key is arranged on the boss key. The cambered surface is tangent to the top surface of the seat backrest foaming piece adjacent to the cambered surface; the boss key is arranged at the position of the assembly groove, the plastic shell on the outermost ring of the boss key is closely adjacent to the inner side wall of the fairing large arc, the height difference H between the plastic shell and the fairing large arc is controlled to range from 2 mm to 3 mm, a cushion layer is arranged at the left lower front corner of the fairing large arc, and the left lower front corner of the fairing large arc interferes with the lower round corner of the boss key. The position, away from the left lower front corner, of the fairing large arc is attached to the boss key in a zero-clearance mode. The structure can ensure that the skin at the matching part of the seat foam and the boss key has no wrinkles.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and particularly relates to a matching structure between a vehicle seat back foaming part and a boss key. Background Art

[0002] Currently, a boss key is usually provided on the side of the seat back at the co-pilot position. The provision of the boss key facilitates the rear passengers to adjust the position of the seat back at the front co-pilot position. The existing boss key is fixed on the backrest frame and arranged in a groove of the foaming layer. After assembling the skin, the skin at the matching position between the seat foam and the boss key is prone to wrinkling, which affects the appearance of the seat. Summary of the Invention

[0003] In view of the above technical problems and disadvantages, the purpose of the utility model is to provide a matching structure between a vehicle seat back foaming part and a boss key, which can ensure that the skin at the matching position between the seat foam and the boss key has no wrinkles.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A matching structure between a vehicle seat back foaming part and a boss key, including a vehicle seat back foaming part and a boss key. An assembly groove is provided at the position of the vehicle seat back foaming part opposite to the boss key. The improvement is that a circumferential smooth large arc is provided on the periphery of the assembly groove. The top surface of the smooth large arc is an arc surface, and the arc surface is tangent to the top surface of the vehicle seat back foaming part adjacent to the arc surface; the boss key is arranged at the assembly groove. The outermost plastic shell of the boss key is adjacent to the inner side wall of the smooth large arc, and the height difference H between the plastic shell and the smooth large arc is controlled within 2 - 3 mm. A cushion layer is provided at the lower left front corner of the smooth large arc, so that there is interference between the lower left front corner of the smooth large arc and the lower rounded corner of the boss key. The interference distance L is controlled within 5 - 8 mm, and gradually upward and right backward along the lower left front corner, the interference distance between the smooth large arc and the boss key gradually becomes smaller; the position of the smooth large arc far from the lower left front corner is in zero-gap fit with the boss key.

[0006] As a preference of the utility model, the height difference H between the plastic shell and the smooth large arc is controlled at 2 mm, and there is 6 mm interference between the lower left front corner of the smooth large arc and the lower rounded corner of the boss key.

[0007] As a preference of the utility model, the cushion layer and the smooth large arc are integrally foamed and formed.

[0008] As a preference of the utility model, the smooth large arc and the vehicle seat back foaming part are integrally foamed and formed.

[0009] As a preference of the utility model, the width of the arc surface is controlled within 15 - 17 mm.

[0010] Advantages and beneficial effects of the present utility model: The structure provided by the present utility model can effectively ensure that the skin at the matching part of the foam and the boss key has no wrinkles, improve the appearance quality at the matching part of the boss key, save the manual shaping time, and reduce the labor cost. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 Schematic diagram of a matching structure between a foam part of an automotive seat backrest and a boss key provided by the present utility model;

[0013] Figure 2 Schematic diagram of the foam part of the seat backrest of the present utility model;

[0014] Figure 3 Schematic diagram of the interference position after the foam part and the boss key of the present utility model are assembled;

[0015] Figure 4 For the present utility model Figure 1 Sectional view taken along line A-A in the present utility model;

[0016] Figure 5 For the present utility model Figure 1 Sectional view taken along line B-B in the present utility model;

[0017] Reference numerals: Foam part of seat backrest 1, Boss key 2, Fairing large arc 3, Cushion layer 4, Assembly groove 101, Plastic housing 201. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is normally placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0020] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0021] As Figures 1 to 5 shown, this embodiment provides a matching structure between a car seat back foam part and a boss key, including a seat back foam part 1 and a boss key 2. An assembly groove 101 is provided at the position of the seat back foam part 1 opposite to the boss key 2. The improvement is that a circular smooth large arc 3 is provided around the circumference of the assembly groove. The smooth large arc 3 is integrally foam-molded with the seat back foam part 1; the top surface of the smooth large arc 3 is an arc surface, and the arc surface is tangent to the top surface of the seat back foam part adjacent to the arc surface. The width of the arc surface is controlled within 15 - 17 mm, preferably controlled at 16.328 mm; the boss key 2 is arranged at the assembly groove 101, and the outermost plastic shell 201 of the boss key 2 is adjacent to the inner side wall of the smooth large arc 3, and the height difference H between the plastic shell 201 and the smooth large arc 3 is controlled within 2 - 3 mm, preferably controlled at 2 mm; a cushion layer 4 is provided at the lower left front corner a of the smooth large arc 3. The cushion layer 4 is integrally foam-molded with the smooth large arc 3, so that there is interference between the lower left front corner a of the smooth large arc 3 and the lower rounded corner of the boss key 2. The interference distance L is controlled within 5 - 8 mm, preferably controlled at 6 mm; and gradually upward and right backward along the lower left front corner a, the interference distance L between the smooth large arc 3 and the boss key 2 gradually becomes smaller; the position of the smooth large arc 3 far from the lower left front corner a is in zero-clearance fit with the boss key 2.

[0022] After adopting the above matching structure provided by the present utility model, after the skin is installed, it can effectively ensure that there are no wrinkles on the skin at the matching part of the foam and the boss key, and improve the appearance quality at the matching part of the boss key.

[0023] The above are the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An automotive seat back foam part and boss key matching structure, comprising a seat back foam part and a boss key. The seat back foam part is provided with an assembly groove at a position opposite to the boss key, characterized in that, An annular smooth large arc is provided on the circumference of the assembly groove. The top surface of the smooth large arc is an arc surface, and the arc surface is tangent to the top surface of the seat back foam member adjacent to the arc surface. The boss key is provided at the assembly groove. The outermost plastic housing of the boss key is adjacent to the inner side wall of the smooth large arc, and the height difference H between the plastic housing and the smooth large arc is controlled within 2-3 mm. A cushion layer is provided at the lower left front corner of the smooth large arc, so that there is interference between the lower left front corner of the smooth large arc and the lower rounded corner of the boss key. The interference distance L is controlled within 5-8 mm, and gradually upward and right backward along the lower left front corner, the interference distance between the smooth large arc and the boss key gradually becomes smaller. The position of the smooth large arc far from the lower left front corner is in zero-clearance fit with the boss key.

2. The matching structure of an automotive seat back foam part and a boss key according to claim 1, characterized in that, The height difference H between the plastic housing and the smooth large arc is controlled within 2 mm, and there is 6 mm interference between the lower left front corner of the smooth large arc and the lower rounded corner of the boss key.

3. The matching structure of an automotive seat back foam part and a boss key according to claim 1, wherein, The cushion layer is integrally foam-molded with the smooth large arc.

4. A matching structure of a car seat back foam part and a boss key according to claim 1, characterized in that, The smooth large arc is integrally foam-molded with the seat back foam member.

5. A matching structure between a foaming part of an automotive seat backrest and a boss key according to claim 1, characterized in that The width of the arc surface is controlled within 15-17 mm.

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