Automobile steering wheel structure with EPP framework

Abstract

The utility model discloses an automobile steering wheel structure with an EPP (Expanded Polypropylene) framework, which relates to the technical field of automobile steering wheels and comprises a hub part connected with an automobile steering column, a holding part held by a driver and a spoke part connected with the hub part and the holding part, the holding part is sequentially provided with a framework layer, a filling layer, an isolating layer, a compression-resistant layer and an outer surface layer from inside to outside, the framework layer is made of a high-density EPP material, and the outer surface layer is made of a low-density EPP foam material. According to the automobile steering wheel structure with the EPP framework, sweat can be prevented from making contact with the framework layer through the compression-resistant layer, the isolating layer and the filling layer, safety is improved, and the automobile steering wheel has excellent energy absorbability, light weight effect and environmental protection performance through the high-density EPP framework layer and the low-density EPP foam outer surface layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile steering wheel, concretely to a kind of automobile steering wheel structure with EPP framework. BACKGROUND

[0002] Automobile steering wheel is the wheel-like device of automobile steering, its function is to change the force that driver acts on the edge of steering wheel into torque and then transmit to steering shaft, traditional automobile steering wheel is usually composed of metal framework and outer cladding, metal framework provides structural strength and stability, while outer cladding provides comfortable touch and beautiful appearance.

[0003] EPP (foamed polypropylene) material is a kind of high-performance lightweight foam material, with excellent energy absorption, lightweight effect, environmental protection performance and recyclability etc., at present, in the field of automobile, high EPP material is often used to manufacture automobile steering wheel framework, seat, bumper etc., low-density EPP material is often used to manufacture automobile steering wheel holding part outer layer, to improve the safety performance and lightweight effect of automobile, but in use, sweat is easy to contact internal framework through the gap of low-density EPP foam material, resulting in framework being corroded.

[0004] Therefore, in view of the above problems, it is necessary for the applicant to design an automobile steering wheel structure with EPP framework to solve the problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an automobile steering wheel structure with EPP framework to solve the problems mentioned in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an automobile steering wheel structure with EPP framework, comprising a hub portion connected with automobile steering column, a holding portion held by driver, and a spoke portion connecting the hub portion and the holding portion, the holding portion is sequentially provided with framework layer, filling layer, isolation layer, compression-resistant layer and outer layer from inside to outside, the framework layer is high-density EPP material, and the outer surface of the framework layer is attached to the inner surface of the filling layer, the outer surface of the filling layer is attached to the inner surface of the isolation layer, the compression-resistant layer comprises a fixing sleeve, and the inner surface of the fixing sleeve is attached to the outer surface of the isolation layer, the outer surface of the fixing sleeve is attached to the inner surface of the outer layer, and the outer layer is low-density EPP foam material.

[0007] Further, the filling layer is filled with water-absorbing resin.

[0008] Through the above structure design, water-absorbing resin is a new type of functional polymer material, with high water-absorbing function of absorbing several hundred to several thousand times water than itself, and excellent water-retention performance, which can prevent sweat from entering the inner layer of holding portion.

[0009] Further, the filling layer is internally provided with a heating element, and the heating element is electrically connected with an external power supply.

[0010] Through the above structural design, the heating element is convenient for heating the holding part, and the use comfort of the driver is improved.

[0011] Further, the material of the isolation layer is a hydrogel film.

[0012] Through the above structural design, the water content of the hydrogel film can be as low as a few percent or as high as 99%, and the hydrogel film has high flexibility, viscoelasticity or pure elasticity, can withstand large deformation, and has chemical stability and formability, so that the waterproofness of the holding part is improved.

[0013] Further, the outer side of the fixing sleeve is provided with a concave-convex block, and the material of the concave-convex block and the fixing sleeve is aluminum alloy, and the fixing sleeve and the concave-convex block are integrally injection molded.

[0014] Through the above structural design, the concave-convex block is convenient for improving the tightness with the isolation layer and the outer layer, and preventing sliding.

[0015] Further, a steel wire framework is embedded in the outer layer.

[0016] Through the above structural design, the toughness of the holding part during use is improved.

[0017] Compared with the prior art, the automobile steering wheel structure with the EPP framework has the advantages that the sweat is prevented from contacting the framework layer by the compression-resistant layer, the isolation layer and the filling layer, the safety is improved, the automobile steering wheel has excellent energy absorption, light weight effect and environmental protection performance by the high-density EPP framework layer and the low-density EPP foam outer layer, and the specific content is as follows.

[0018] The automobile steering wheel structure with the EPP framework comprises a hub part connected with a steering column of an automobile, a holding part held by a driver, and a spoke part connecting the hub part and the holding part, the holding part is sequentially provided with a framework layer, a filling layer, an isolation layer, a compression-resistant layer and an outer layer from inside to outside, the filling layer is compactly filled with water-absorbing resin, the material of the isolation layer is a hydrogel film, the water-absorbing resin and the hydrogel film can prevent sweat from entering the inner layer of the holding part, the waterproofness of the holding part is improved, the safety is improved, the outer layer is a low-density EPP foam material, the framework layer is a high-density EPP material, the automobile steering wheel has excellent energy absorption, light weight effect and environmental protection performance, and use comfort. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a whole three-dimensional structure schematic view of the utility model;

[0020] Fig. 2 This is a cross-sectional view of the gripping part of this utility model;

[0021] Fig. 3 This is a three-dimensional cross-sectional view of the compressive layer of this utility model.

[0022] In the diagram: 1. Hub; 2. Grip; 3. Spoke; 4. Frame layer; 5. Filler layer; 6. Isolation layer; 7. Pressure-resistant layer; 8. Outer layer; 9. Fixing sleeve; 10. Bump and groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figs. 1-3 As shown, the present invention discloses a car steering wheel structure with an EPP skeleton, including a hub portion 1 connected to the car steering column, a grip portion 2 for the driver to hold, and a spoke portion 3 connecting the hub portion 1 and the grip portion 2. The grip portion 2 is provided with a skeleton layer 4, a filling layer 5, an isolation layer 6, a pressure-resistant layer 7, and an outer layer 8 from the inside out. The skeleton layer 4 is made of high-density EPP material, and the outer surface of the skeleton layer 4 is bonded to the inner surface of the filling layer 5. The outer surface of the filling layer 5 is bonded to the inner surface of the isolation layer 6. The pressure-resistant layer 7 includes a fixing sleeve 9, and the inner surface of the fixing sleeve 9 is bonded to the outer surface of the isolation layer 6. The outer surface of the fixing sleeve 9 is bonded to the inner surface of the outer layer 8. The outer layer 8 is made of low-density EPP foam material.

[0025] The filling layer 5 is compactly filled with water-absorbing resin, the water-absorbing resin is a new type of functional polymer material, has the high water-absorbing function of absorbing several hundred to several thousand times water than its own weight, and has excellent water-retaining performance, can prevent sweat from entering the inner layer of the holding part 2, the inside of the filling layer 5 is provided with a heating element, and the heating element is electrically connected with an external power supply, the heating element is convenient for heating the holding part 2, improves the use comfort of the driver, the material of the isolation layer 6 is a hydrogel film, the water content of the hydrogel film can be as low as a few percent, or as high as 99%, has high flexibility, viscoelasticity or pure elasticity, can withstand large deformation, and has chemical stability and formability, which will facilitate to improve the waterproofness of the inside of the holding part 2, the outer side of the fixing sleeve 9 is provided with a concave-convex block 10, and the materials of the concave-convex block 10 and the fixing sleeve 9 are both aluminum alloy, the fixing sleeve 9 and the concave-convex block 10 are integrally injection molded, the concave-convex block 10 is convenient for improving the tightness with the isolation layer 6 and the outer surface layer 8, and preventing slipping, the inside of the outer surface layer 8 is embedded with a steel wire framework, which is convenient for improving the toughness of the holding part 2 during use.

[0026] Through the above structure design, the automobile steering wheel structure with the EPP framework includes the hub part 1 connected with the automobile steering column, the holding part 2 held by the driver, and the spoke part 3 connecting the hub part 1 and the holding part 2, the holding part 2 is sequentially provided with the framework layer 4, the filling layer 5, the isolation layer 6, the compression-resistant layer 7 and the outer surface layer 8 from inside to outside, the filling layer 5 is compactly filled with water-absorbing resin, the material of the isolation layer 6 is a hydrogel film, the water-absorbing resin and the hydrogel film can prevent sweat from entering the inner layer of the holding part 2, facilitate to improve the waterproofness of the inside of the holding part 2, improve the safety, the outer surface layer 8 is a low-density EPP foam material, and the framework layer 4 is a high-density EPP material, so that the automobile steering wheel has excellent energy absorption, light weight effect and environmental protection performance, and use comfort.

[0027] Through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A steering wheel structure of a vehicle with an EPP framework, comprising a hub part (1) connected with a steering column of the vehicle, a holding part (2) held by a driver, and a spoke part (3) connecting the hub part (1) and the holding part (2), characterized in that the holding part (2) is sequentially provided with a framework layer (4), a filling layer (5), an isolation layer (6), a compression-resistant layer (7) and an outer surface layer (8) from inside to outside, the framework layer (4) is made of high-density EPP material, and an outer surface of the framework layer (4) is attached to an inner surface of the filling layer (5), an outer surface of the filling layer (5) is attached to an inner surface of the isolation layer (6), the compression-resistant layer (7) comprises a fixing sleeve (9), an inner surface of the fixing sleeve (9) is attached to an outer surface of the isolation layer (6), an outer surface of the fixing sleeve (9) is attached to an inner surface of the outer surface layer (8), and the outer surface layer (8) is made of low-density EPP foam material.

2. The steering wheel structure of claim 1, wherein: The filling layer (5) is compactly filled with water-absorbing resin.

3. The steering wheel structure of claim 2, wherein: A heating element is arranged inside the filling layer (5), and the heating element is electrically connected with an external power supply.

4. The steering wheel structure of claim 1, wherein: The isolation layer (6) is made of hydrogel film.

5. The steering wheel structure of claim 1, wherein: The fixing sleeve (9) is provided with concave-convex blocks (10) on the outside, and the fixing sleeve (9) and the concave-convex blocks (10) are made of aluminum alloy, and the fixing sleeve (9) and the concave-convex blocks (10) are integrally injection molded.

6. The steering wheel structure of claim 1, wherein: A steel wire framework is embedded inside the outer surface layer (8).

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