Connecting structure of steel-plastic cross beam steering column mounting bracket

Abstract

The invention relates to a connecting structure of a steel-plastic cross beam steering column mounting bracket, which comprises a bracket limiting part arranged on the surface of a steel-plastic cross beam and a metal bracket arranged at the joint of the steel-plastic cross beam and a steering column, and the metal bracket comprises a steering column connecting part and a cross beam connecting part, the cross beam connecting part and the steel-plastic cross beam are integrally formed in a plastic coating and embedding manner; the steering column connecting parts are arranged on the two sides of the cross beam connecting part, and the support limiting part comprises a wrapping part and a limiting part, wherein the wrapping part completely wraps the cross beam connecting part and partially wraps the steering column connecting parts, and the limiting part is connected with the steel-plastic cross beam. The CCB steering column mounting metal support and the steel-plastic cross beam front wall are connected in a plastic-coated embedded mode, integral forming is also beneficial to improvement of size precision, reduction of subsequent screw joint and further realization of light weight of an automobile, and the CCB steering column mounting metal support and the steel-plastic cross beam front wall play a crucial role in reducing oil consumption, prolonging endurance and reducing emission.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to a connection structure of a steel-plastic crossbeam steering column mounting bracket. Background Art

[0002] With the rapid development of China's new energy vehicle industry, automobile lightweighting has become a basic technology in the development of new energy vehicles. Automobile lightweighting plays a vital role in reducing fuel consumption, improving endurance, and reducing emissions. It has become a research hotspot in the domestic and foreign automobile industry. On the basis of ensuring the original performance, optimizing the design of various assembly parts and continuously optimizing the model are the leading ideas of automobile lightweighting.

[0003] At present, the main materials used to implement automobile lightweighting include carbon fiber, aluminum alloy, magnesium alloy, titanium alloy, engineering plastics, composite materials and high-strength steel, which are mainly used to transform and replace body materials. Automobile lightweighting can be roughly divided into three categories: body lightweighting, engine lightweighting and chassis lightweighting. The purpose is to reduce the weight of the vehicle by using lighter materials while ensuring performance, thereby achieving energy-saving and environmental protection functions.

[0004] In the prior art, the cross beam of the car dashboard needs to ensure the strength of the car body, and the material is usually metal, and each connecting bracket part is often a metal structure or connected by welding. The installation accuracy cannot be guaranteed, the process is complicated, and it is not conducive to the requirements of lightweight, but its connection with other structures such as the steering column mounting bracket does not affect the overall strength of the car body. In the process of lightweight improvement, the cross beam can be changed to steel-plastic material as a whole, but its connection structure is complicated, and it is difficult to directly demold ordinary molds, which improves. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a connection structure of a steel-plastic crossbeam steering column mounting bracket, which adopts a lightweight design to connect the steel-plastic crossbeam and the steering column mounting bracket to achieve lightweighting of the vehicle.

[0006] The technical solution adopted by the present invention to solve its technical problems is: to provide a connection structure of a steel-plastic beam steering column mounting bracket, including a bracket limiting portion arranged on the surface of the steel-plastic beam and a metal bracket arranged at the connection between the steel-plastic beam and the steering column, the metal bracket includes a steering column connecting portion and a beam connecting portion, and the beam connecting portion is integrally formed with the steel-plastic beam by means of plastic encapsulation and embedding; the steering column connecting portion is arranged on both sides of the beam connecting portion, and the end of the steering column connecting portion away from the steel-plastic beam is provided with a connecting piece for fixed connection with the steering column, the bracket limiting portion includes a covering portion that completely covers the beam connecting portion, partially covers the steering column connecting portion, and a limiting portion connected to the steel-plastic beam, and the beam connecting portion and the steering column connecting portion are provided with a plurality of glue holes in the portions covered by the bracket limiting portion.

[0007] Preferably, the steering column connection portion is a “concave” shaped metal bracket, the bottom side of the “concave” shape is the crossbeam connection portion, and both side sides of the “concave” shape are the steering column connection portion.

[0008] Preferably, the surface of the beam connecting portion is wavy.

[0009] Preferably, a reinforcing plate is provided on the side of the steering column connecting portion, and one end of the reinforcing plate is connected to the crossbeam connecting portion.

[0010] Preferably, reinforcing ribs are provided between the limiting portion and the covering portion, and weight-reducing grooves are provided between adjacent reinforcing ribs.

[0011] Preferably, the connecting member comprises a through hole opened on the surface of the steering column connecting portion and a bolt passing through the through hole and matching with the steering column.

[0012] Preferably, the hole margin between the glue hole and the side edge of the metal bracket is greater than or equal to 6 mm.

[0013] Preferably, the diameter of the glue hole is φ6mm-φ8mm.

[0014] Preferably, the outer side of the covering portion covering the steering column connecting portion is thicker than the inner side, and the thickness of the covering portion is greater than 1.4 times the thickness of the steering column connecting portion.

[0015] Beneficial Effects

[0016] The present invention adopts a plastic-coated embedded connection for connecting the metal bracket for mounting the CCB steering column with the front enclosure of the steel-plastic crossbeam. The one-piece molding is also conducive to improving dimensional accuracy, reducing subsequent screw connections, and helping to further achieve lightweighting of the automobile, which plays a vital role in reducing fuel consumption, improving cruising range, and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the connection structure of a steel-plastic crossbeam steering column mounting bracket.

[0018] Figure 2 for Figure 1 Look at the enlarged view of the middle bracket limit part.

[0019] Figure 3 for Figure 2 Middle BB section view.

[0020] Figure 4 for Figure 2 A magnified image of the metal bracket in the middle.

[0021] Figure 5 for Figure 1 Schematic diagram of the connection between the metal bracket and the steering column.

[0022] Among them, 1- bracket limiting part; 101- reinforcing rib; 102- weight reduction groove; 103- covering part; 2- metal bracket; 201- steering column connecting part; 202- cross beam connecting part; 203- glue hole; 204- reinforcing plate; 3- steering column; 4- steel-plastic cross beam.

[0023] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0025] like Figures 1 to 5 As shown, the present invention provides a connection structure of a steel-plastic beam steering column mounting bracket, comprising a bracket limiting portion 1 arranged on the surface of the steel-plastic beam 4 and a metal bracket 2 arranged at the connection between the steel-plastic beam 4 and the steering column 3, the metal bracket 2 comprises a steering column connecting portion 201 and a beam connecting portion 202, the beam connecting portion 202 is integrally formed with the steel-plastic beam 4 by means of plastic encapsulation and embedding; the steering column connecting portion 201 is arranged on both sides of the beam connecting portion 202, and the end of the steering column connecting portion 201 away from the steel-plastic beam 4 is provided with a connecting piece for fixed connection with the steering column 3, the bracket limiting portion 1 comprises a covering portion 103 which completely covers the beam connecting portion 202 and partially covers the steering column connecting portion 201, and a limiting portion connected to the steel-plastic beam 4, and the beam connecting portion 202 and the steering column 3 connecting portion 201 are provided with a plurality of glue holes 203 in the parts covered by the bracket limiting portion 1.

[0026] In a specific embodiment, the steering column connection part 201 is a “concave” shaped metal bracket 2 , the bottom side of the “concave” shape is the crossbeam connection part 202 , and the two side sides of the “concave” shape are the steering column connection part 201 .

[0027] The surface of the cross beam connection portion 202 is wavy, which increases the connection strength between the metal bracket 2 and the bracket limiting portion 1 while occupying as little space as possible.

[0028] A reinforcing plate 204 is provided on the side of the steering column connecting portion 201 , and one end of the reinforcing plate 204 is connected to the crossbeam connecting portion 202 , so as to increase the connection strength between the metal bracket 2 and the steering column 3 while occupying as little space as possible.

[0029] A reinforcing rib 101 is provided between the limiting portion and the covering portion 103, and a weight-reducing groove 102 is provided between adjacent reinforcing ribs 101. The weight-reducing groove 102 helps to further reduce the weight of the connection structure.

[0030] The connecting member includes a through hole opened on the surface of the steering column connecting part 201 and a bolt passing through the through hole and matching with the steering column 3. The steering column 3 can rotate around the bolt as an axis to a certain angle so as to adjust the height of the steering wheel according to the driver's needs.

[0031] The glue holes 203 can increase the connection strength between the metal bracket 2 and the bracket limiting part 1. The glue holes 203 are distributed according to the shape of the metal bracket 2, and can also be arranged according to the following principles: the hole margin between the glue holes 203 and the side of the metal bracket 2 is greater than or equal to 6mm. The hole diameter of the glue holes 203 is φ6mm to φ8mm.

[0032] The outer side t2 of the covering portion 103 covering the steering column connecting portion 201 is thicker than the inner side t1 , and the thicknesses t1 and t2 of the covering portion 103 are greater than 1.4 times the thickness t of the steering column connecting portion 201 .

Claims

1. A connection structure of a steel-plastic beam steering column mounting bracket, characterized in that: It includes a bracket limiting part arranged on the surface of the steel-plastic cross beam and a metal bracket arranged at the connection between the steel-plastic cross beam and the steering column. The metal bracket includes a steering column connecting portion and a crossbeam connecting portion. The crossbeam connecting portion is integrally formed with the steel-plastic crossbeam by means of plastic-encapsulation; The steering column connection part is arranged on both sides of the cross beam connection part, and one end of the steering column connection part away from the steel-plastic cross beam is provided with a connection piece for fixed connection with the steering column. The bracket limiting portion includes a covering portion that completely covers the crossbeam connecting portion and partially covers the steering column connecting portion, and a limiting portion connected to the steel-plastic crossbeam. The crossbeam connecting portion and the steering column connecting portion are provided with a plurality of glue holes in the portions covered by the bracket limiting portion.

2. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The steering column connection part is a "concave"-shaped metal bracket, the bottom side of the "concave"-shaped bracket is the crossbeam connection part, and the two side sides of the "concave"-shaped bracket are the steering column connection part.

3. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The surface of the beam connecting portion is wavy.

4. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: A reinforcing plate is provided on the side of the steering column connecting portion, and one end of the reinforcing plate is connected to the crossbeam connecting portion.

5. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: Reinforcing ribs are provided between the limiting portion and the covering portion, and weight-reducing grooves are provided between adjacent reinforcing ribs.

6. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The connecting member comprises a through hole opened on the surface of the steering column connecting part and a bolt passing through the through hole and matching with the steering column.

7. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The hole margin between the glue hole and the side edge of the metal bracket is greater than or equal to 6 mm.

8. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The diameter of the glue hole is φ6mm~φ8mm.

9. The connection structure of the steel-plastic beam steering column mounting bracket according to claim 1, characterized in that: The outer side of the covering portion covering the steering column connecting portion is thicker than the inner side, and the thickness of the covering portion is greater than 1.4 times the thickness of the steering column connecting portion 201 .

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