CN115352519A - a car steering wheel - Google Patents

Abstract

The invention discloses an automobile steering wheel, which comprises a steering wheel module and a driver airbag module arranged in a mounting concave part on the steering wheel module, and is characterized in that: and a damping unit is arranged between the driver airbag module and the steering wheel module. The automobile steering wheel is simple in structure, capable of effectively improving the steering wheel shaking problem, capable of improving product quality and whole automobile operation comfort, and high in practicability and good in application prospect.

Description

a car steering wheel

technical field

The invention belongs to the technical field of automobiles, and more specifically relates to an automobile steering wheel.

Background technique

The steering wheel is one of the parts that customers touch and use frequently. As customers gradually increase their requirements for car quality, refinement and comfort, as the first product that customers perceive, its quality, touch, product performance and structure are reliable. Sexuality and other requirements are gradually increased;

Under certain working conditions, affected by vibration sources such as the engine, the steering wheel will vibrate, vibrate and other problems that make customers feel uncomfortable. This problem affects the comfort of the steering wheel and needs to be solved urgently; the existing steering wheel structure cannot satisfy customers well. Use requirements need to be further improved.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the prior art, and provide an automobile steering wheel with a simple structure, which can effectively improve the vibration problem of the steering wheel, and improve product quality and vehicle operation comfort.

In order to achieve the above object, the technical solution adopted by the present invention is: the provided automobile steering wheel includes a steering wheel module and a driver's airbag module installed in the recessed portion on the steering wheel module, and is characterized in that: the driver's airbag module and A damping unit is located between the steering wheel modules.

In order to make the above technical solutions more detailed and specific, the present invention also provides the following further preferred technical solutions to obtain satisfactory practical effects:

The driver's airbag module includes an outer cover, and a casing plastic-coated fixing seat is provided under the outer cover cover, and an air bag and a gas generator are arranged on the casing plastic-coated fixing seat.

A positioning hole for installing a shock-absorbing unit is provided on the plastic-coated fixing seat of the housing.

Three positioning holes arranged in an equilateral triangle are arranged on the plastic-coated fixing seat of the housing near the edge, and a shock absorbing unit is arranged in each of the positioning holes.

The positioning holes are covered with plastic to form a plastic-coated fixed position, and the horn upper contacts and anti-rotation structures are provided on the sides of each of the positioning holes.

The steering wheel module includes a steering wheel frame and a steering wheel foam disposed in the steering wheel frame.

The shock absorbing unit includes an injection molding sleeve, a pin connected to the steering wheel frame is installed in the injection molding sleeve, a spring is arranged on the pin, and the spring is supported in the spring base.

The spring base includes a lower horn contact copper sheet, and a plastic coating layer is provided outside the horn lower contact copper sheet.

The lower part of the spring base is supported and positioned on the steering wheel frame, and the lower part of the spring base is provided with a buckle which is clamped on the pin.

The injection molded sleeve is provided with a silicone pad that cooperates with the overmolded fixing position.

Compared with the prior art, the present invention has the following advantages: the automobile steering wheel of the present invention has a simple structure, can effectively improve the steering wheel vibration problem, improve product quality and vehicle operation comfort, and has strong practicability and good application prospect.

Description of drawings

The following is a brief description of the content expressed in the accompanying drawings of this specification and the marks in the drawings:

Fig. 1 is the structural representation of steering wheel module in the present invention;

Fig. 2 is a schematic structural diagram of the driver's airbag module in the present invention;

Fig. 3 is a schematic diagram of the assembly structure of the driver's airbag module in the present invention;

Fig. 4 is a sectional view after the assembly of the driver's airbag module and the steering wheel module in the present invention;

Fig. 5 is a structural schematic diagram of the housing plastic-coated fixing seat of the present invention;

Fig. 6 is a structural schematic diagram of the damping unit and the horn spring assembly in the present invention;

Fig. 7 is a structural schematic diagram of the spring base assembly in the present invention;

Figure 8 is an exploded view of the driver's airbag module in the present invention;

Fig. 9 is a schematic diagram of the stopping structure in the present invention.

Reference signs:

10. Steering wheel module, 11. Steering wheel foam body, 12. Steering wheel frame, 13. Spline sleeve, 14. U-shaped cartridge, 15. Multi-function button, 20. Installation recess, 30. Driver airbag module, 31. Outer cover cover, 32, pressure plate, 33, air bag, 34, gas generator, 35, housing plastic-coated fixed seat, 351, fixed seat body, 352, plastic-coated fixed position, 353, horn upper contact, 354, anti Rotary structure, 36. Shock absorbing unit, 361. Injection sleeve, 362. Silicone pad, 363. Spring holder, 364. Spring, 37. Horn spring assembly, 38. Pin, 39. Spring base assembly, 391, Horn lower contact Point copper sheet, 392, outer plastic layer, 393, skeleton positioning surface, 394, skeleton positioning shaft, 395, buckle.

Detailed ways

The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

This automobile steering wheel of the present invention, as shown in Fig. 1, 9, comprises steering wheel module 10 and is installed in the driver's air bag module 30 in the recessed part 20 on the steering wheel module 10, is provided between the driver's air bag module 30 and the steering wheel module 10 There is a shock absorbing unit 36 . This new type of steering wheel shock absorbing structure is progressing and reliable in verification, effectively solving customer complaints such as steering wheel vibration, and improving product quality and vehicle operation comfort.

In the present invention, as shown in FIG. 1, the steering wheel module 10 includes a steering wheel frame 12, a steering wheel foam body 11 disposed in the frame, a spline sleeve 13 connected to the steering system, and a U-shaped clip 14 below the steering wheel frame 12. And multi-function button 15 etc. are formed.

Figure 2 shows the assembly of the driver's airbag module 30, including an outer cover 31, a pressure plate 32, an airbag 33, a gas generator 34, a casing plastic-coated fixing seat 35, a shock absorbing unit 36, a horn spring assembly 37, and a pin 38, the spring base assembly 39, etc.; the horn assembly is linked with the pin 38 to form a lower contact, and is positioned with the skeleton at the same time. As shown in Figures 3 and 4, the airbag module is installed in the installation recess 20 on the steering wheel module 10, and the driver's airbag module 30 is provided with three installation points, through three pins 38 arranged in an equilateral triangle and the steering wheel. The three U-shaped springs 14 correspondingly arranged on the module 10 are connected to ensure the reliability of the connection; there is a stop device between the airbag module and the steering wheel, and the circlip on the steering wheel frame is engaged with the pin on the driver's airbag. Fixing is used to constrain the airbag module on the steering wheel.

In the present invention, as shown in Figures 4 and 5, the housing plastic-coated fixing seat 35 includes a fixing seat body 351, which is a stamped and formed sheet metal formed part, and is provided with three positioning holes, and is wrapped around the position of the positioning holes. Three plastic parts are molded to form three plastic-coated fixing positions 352. The contacts 353 on the horn are riveted on the fixing seat body 351, and are distributed in three positions of an equilateral triangle. An anti-rotation structure 354 is designed, and the anti-rotation structure 354 is arranged on both sides of the positioning hole to play an anti-rotation role, as shown in Figure 5 for details.

In the present invention, as shown in Fig. 6, the damping unit 36 has an injection molded sleeve 361, and a silicone pad 362 is vulcanized on the outside. It is fixed on the shock absorbing unit, and then the spring 364 is fixed on the spring holder 363 by buckles to form a structure of the shock absorbing unit 36 and the horn spring assembly 37, and there are three such structures in total.

In the present invention, as shown in FIG. 7, the spring base assembly 39 includes a lower horn contact copper sheet 391, which is composed of a plastic layer 392 on the outside of the horn lower contact copper sheet 391, and its function is to conduct power supply and position with the skeleton Cooperate and fix on the pin at the same time to prevent shaking and abnormal noise. The bottom surface of the spring base assembly 39 is provided with a skeleton positioning surface 393 and a skeleton positioning shaft 394 extending downwards to coordinate with the skeleton. Below the frame positioning shaft 394 is provided a buckle 395 that engages with the pin.

The shock absorption principle of the airbag module structure is that when the steering system mode is relatively poor, the steering wheel will resonate with the steering system, and the airbag module above the silicone pad 362 will generate vibration in the opposite direction of the entire steering wheel due to its own weight. A force that eliminates the vibration of the entire steering wheel, thus forming a shock absorption effect. According to the development needs, the shock absorbing unit can be replaced by plastic parts without flexible rubber shock absorbing pads, forming a platform structure without shock absorbing function, and effectively reducing costs. The structure change is simple and convenient, and the combination of the two can be realized at any time. Switching, you can design a structure with a silicone pad, or design an integrated plastic part to replace the silicone pad structure, taking into account factors such as cost to form two sets of structures.

The object of the present invention is an improved steering wheel with damping function and driver's safety airbag matching structure, which can realize the accurate positioning, fixing, and motion matching reliability of the airbag module on the steering wheel, and can improve the steering wheel during driving. vibration, improve driving comfort for customers, improve product quality, and form a platform-based product structure to effectively control costs, etc.

In the present invention, the steering wheel and the positioning surface of the airbag module are contacted for positioning, and the positioning hole pins at the 3/6/9 o'clock positions are used for positioning. The pin 38 on the driver's airbag is connected with the corresponding U-shaped snap spring 14 at the position of 3/6/9 o'clock on the steering wheel in a clamping manner, through the steering wheel frame 12 and a main positioning surface of the driver's airbag and three The connecting hole forms two auxiliary positioning, the positioning is accurate and reliable.

In the present invention, the decorative cover of the airbag module is used as the horn pressing surface. When the decorative cover is pressed, it overcomes the elastic force of the three horn springs and presses down and moves closer to the steering wheel. When the airbag module is fully pressed down, the airbag module The internal damping unit moves relative to the airbag clamping pin until the upper and lower rigid contacts inside the airbag module contact, and the lower contact copper sheet 391 of the horn contacts with the upper contact 353 of the horn, so that the horn can be turned on. Structurally, there is a stop structure between the slot of the pin of the airbag module and the U-shaped spring of the steering wheel, as shown in Figure 9, when the airbag module is not pressed down by force, The pin is connected with the U-shaped snap ring stop hook on the steering wheel, thereby restricting the airbag module to the steering wheel. When the car collides or due to other reasons, when the gas generator of the airbag module is ignited, a huge blasting force is generated between the airbag module and the steering wheel instantaneously, and the U-shaped circlip on the stop structure can effectively limit the airbag module. The extrapolation movement due to the reaction force during gas explosion.

The pin 38 is fixed on the driver's airbag through the spring base assembly 39, and the U-shaped circlip 14 is fixed on the steering wheel frame 12. When the driver's airbag is assembled on the steering wheel, the pin is put into the steering wheel frame through the guide bevel, and the U is pushed away at the same time. When the pin continues to be assembled downwards and the U-shaped circlip reaches the first slot of the pin, the U-shaped circlip automatically springs into the slot of the pin, so that the driver's airbag is completely fixed.

In the present invention, the damping structure is mainly composed of an airbag module fixed on the plastic-coated fixing seat of the casing, a shock-absorbing unit and a pin clamped on the steering wheel, and the shock-absorbing unit is assembled between the plastic-coated fixing seat of the casing and the pin , the upper part of the steel airbag module is composed of a shock absorbing unit and a hollow cylindrical plastic protection device fixed on the horn bracket that can surround the elastic body.

In the present invention, the outer side of the shock-absorbing structure is formed by using the shell plastic-coated fixing seat formed by plastic-coated stamping, and the inner side of the fixed position of the shock-absorbing structure is a positioning pin processed by metal machining, and the pin is rigidly fixed in the connecting hole of the steering wheel. Under special working conditions, due to the weight of the airbag module, it will produce a movement opposite to the overall vibration direction of the steering wheel to reduce and optimize the vibration of the overall steering wheel. A shock-absorbing structure is arranged at the 3/6/9 o'clock positions respectively. The three-point shock-absorbing and energy-absorbing method effectively improves product stability and handling comfort, forming a complete set of shock-absorbing structures.

In the present invention, according to development needs, the shock absorbing unit can be replaced by plastic parts without flexible rubber shock absorbing pads, forming a platform structure without shock absorbing function, and effectively reducing costs.

The automobile steering wheel of the invention has a simple structure, can effectively improve the vibration problem of the steering wheel, improve the product quality and the operating comfort of the whole vehicle, and has strong practicability and good application prospects.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The present invention has been exemplarily described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned manner, as long as various insubstantial improvements or direct application to other occasions are carried out by adopting the method concept and technical solutions of the present invention, All fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an automobile steering wheel, includes the steering wheel module and installs the driver airbag module in the installation concave part on the steering wheel module, its characterized in that: and a damping unit is arranged between the driver airbag module and the steering wheel module.

2. The steering wheel for a vehicle according to claim 1, wherein: the driver airbag module comprises an outer cover, a shell wrapping and plastic fixing seat is arranged below the outer cover, and an airbag and a gas generator are arranged on the shell wrapping and plastic fixing seat.

3. The steering wheel for a vehicle according to claim 2, wherein: and the shell plastic-coated fixing seat is provided with a positioning hole for installing a damping unit.

4. The steering wheel for a vehicle of claim 3, wherein: the casing is moulded to be close to the edge on the fixing base and is equipped with the three locating hole that is equilateral triangle and arranges, every all be equipped with shock attenuation unit in the locating hole.

5. The steering wheel for a vehicle according to claim 4, wherein: the locating hole is wrapped to mould and is formed the fixed position of wrapping to mould, every locating hole side all is equipped with loudspeaker upper contact and rotation-proof structure.

6. The steering wheel for a vehicle of claim 1, wherein: the steering wheel module comprises a steering wheel framework and a steering wheel foaming body arranged in the steering wheel framework.

7. The steering wheel for a vehicle of claim 5, wherein: the shock absorption unit comprises an injection molding sleeve, a pin connected to a steering wheel framework is installed in the injection molding sleeve, a spring is arranged on the pin, and the spring is supported in a spring base.

8. The steering wheel for a vehicle of claim 7, wherein: the spring base comprises a loudspeaker lower contact copper sheet, and a plastic coating layer is arranged outside the loudspeaker lower contact copper sheet.

9. The steering wheel for a vehicle of claim 8, wherein: the spring base below supports and is positioned on the steering wheel skeleton, the spring base below is equipped with the joint and is in buckle on the pin.

10. The steering wheel for a vehicle of claim 9, wherein: and a silica gel pad matched with the plastic coating fixing position is arranged outside the injection molding sleeve.

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