Foam forming structure of steering wheel framework

Abstract

The utility model belongs to an automobile steering wheel foaming structure, and particularly relates to a steering wheel framework foaming forming structure which comprises a steering wheel framework, a first polyurethane foaming material, a heating wire, a second polyurethane foaming material and leather. The heating wire adheres to the outer surface of the first polyurethane foaming material, the second polyurethane foaming material is cured on the heating wire, finally, the leather adheres to the outer surface of the second polyurethane foaming material, the second polyurethane foaming material is added between the heating wire and the leather, and the first polyurethane foaming material is combined; compared with the prior art, the product percent of pass is improved, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile steering wheel foaming structure technical field, more specifically, it relates to a steering wheel framework foaming forming structure. BACKGROUND

[0002] As a kind of winter clothing of superior thermal performance, the characteristics of pull sweater are that its surface has a layer of uniform dense nap, and it is soft and light to wear, and it is fashionable, and it is loved by consumers.‌

[0003] As shown in Figure 1 It is the product that foaming is completed, 01 is steering wheel framework, 02 is polyurethane foaming material, 03 is heating wire, 04 is leather, the framework heating of traditional steering wheel is accurately placed in mould with designed steering wheel framework 01, then polyurethane foaming material 02 is injected into mould, polyurethane foaming material 02 gradually expands and is closely combined with framework in mould by the heating effect of mould constant temperature machine after chemical reaction, form the basic structure layer of steering wheel framework 01, complete foaming work.

[0004] Heating wire 03 is attached to the outer surface of polyurethane foaming material 02 by glue, after completing first foaming, heating wire 03 is attached to the outer surface of polyurethane foaming material 02, and finally leather 04 is attached to heating wire 03 by glue.

[0005] Since only one polyurethane foaming material 02 exists some problems,

[0006] First, polyurethane foaming material 02 will cause internal defects, such as bubble, cavity or local density deficiency, in single foaming process due to uneven distribution of polyurethane foaming material 02, so that the heating effect of steering wheel framework 01 is uneven, and even in some areas, the expected heating effect cannot be achieved, and the product qualification rate is reduced.

[0007] Second, it is difficult to ensure the close combination between heating wire 03 and polyurethane foaming material 02, and it is prone to looseness or falling off in long-term use, thereby reducing product failure rate. UTILITY MODEL CONTENT

[0008] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a steering wheel framework foaming forming structure for improving product qualification rate and reducing failure rate.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] A steering wheel framework foaming forming structure, comprising steering wheel framework, first polyurethane foaming material, heating wire, second polyurethane foaming material and leather,

[0011] The first polyurethane foam material is arranged between the steering wheel skeleton and the heating wire on one side,

[0012] The second polyurethane foam material is arranged between the heating wire on the other side and the leather,

[0013] The first polyurethane foam material is fixedly connected with the steering wheel skeleton and the heating wire,

[0014] The second polyurethane foam material is fixedly connected with the heating wire,

[0015] The leather is fixedly connected with the second polyurethane foam material.

[0016] The utility model further sets up: the heating wire and the first polyurethane foam material are connected through the glue.

[0017] The utility model further sets up: the leather and the second polyurethane foam material are connected through the glue.

[0018] The utility model further sets up: the steering wheel skeleton adopts magnesium alloy.

[0019] By adopting the above technical scheme, the utility model has the beneficial effects that:

[0020] The first polyurethane foam material is first solidified on the steering wheel skeleton, the heating wire is adhered to the outer surface of the first polyurethane foam material, the second polyurethane foam material is solidified on the heating wire, and finally the leather is adhered to the outer surface of the second polyurethane foam material, the second polyurethane foam material is added between the heating wire and the leather, and the first polyurethane foam material is combined, thereby improving the product qualified rate and reducing the failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a prior art schematic diagram;

[0022] Figure 2 It is a schematic diagram of the utility model embodiment;

[0023] The steering wheel skeleton 1, the first polyurethane foam material 2, the heating wire 3, the second polyurethane foam material 4 and the leather 5. DETAILED DESCRIPTION

[0024] The technical scheme in the utility model embodiments will be apparently and completely described in connection with the drawings in the utility model embodiments, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] In the description of the utility model, need understanding is, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0026] As Figure 2 The steering wheel framework 1 is placed in the mold, the contact surface of the steering wheel framework 1 and the mold is flat and closely adheres.

[0027] The first polyurethane foaming material 2 is placed in the mold, then the mold is heated by the mold thermostat, so that the first polyurethane foaming material 2 is solidified on the steering wheel framework 1, the first polyurethane foaming material 2 and the steering wheel framework 1 are in a fixed state, the steering wheel framework 1 is taken out, the heating wire 3 is adhered to the outer surface of the first polyurethane foaming material 2, after adhering, the steering wheel framework 1 is placed in the mold again;

[0028] The second polyurethane foaming material 4 is placed, the mold is heated again, the second polyurethane foaming material 4 is solidified on the heating wire 3 by the mold thermostat, the second polyurethane foaming material 4 is fixed with the heating wire 3 at this time,

[0029] Finally, the leather 5 is adhered to the outer surface of the second polyurethane foaming material 4, realizing secondary foaming and heating operation on the framework.

[0030] Working principle: the second polyurethane foaming material 4 is solidified on the steering wheel framework 1 first, then the heating wire 3 is adhered and fixed on the outer surface of the first polyurethane foaming material 2 by glue, the second polyurethane foaming material 4 is solidified on the outer surface of the heating wire 3, after solidification, the leather 5 is covered and fixed on the outer surface of the second polyurethane foaming material 4 by glue, thereby improving product qualification rate and reducing failure rate.

[0031] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and the skilled in the art can make usual changes and replacements within the technical scheme range of the utility model, which should be included in the protection range of the utility model.

Claims

1. A foam-molded structure for a steering wheel frame, characterized in that, It includes a steering wheel frame (1), a first polyurethane foam material (2), a heating wire (3), a second polyurethane foam material (4), and leather (5). The first polyurethane foam material (2) is placed between the steering wheel frame (1) and the heating wire (3) on one side. The second polyurethane foam material (4) is placed between the heating wire (3) on the other side and the leather (5). The first polyurethane foam material (2) is used to fix the steering wheel frame and heating wire (3) together. The second polyurethane foam material (4) is fixedly connected to the heating wire (3). Leather (5) is wrapped and fixed onto the second polyurethane foam material (4).

2. The foam-molded structure for a steering wheel frame according to claim 1, characterized in that, The heating wire (3) and the first polyurethane foam material (2) are connected by adhesive.

3. The foam-molded structure for a steering wheel frame according to claim 1, characterized in that, The leather (5) and the second polyurethane foam material (4) are connected by adhesive.

4. The foam-molded structure for a steering wheel frame according to claim 1, characterized in that, The steering wheel frame (1) is made of magnesium alloy.

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