Automobile steering wheel shock absorbing unit and automobile steering wheel

Abstract

The invention discloses a car steering wheel shock absorbing unit and a car steering wheel, wherein the car steering wheel shock absorbing unit comprises a counterweight assembly, a shock absorbing connector, a return spring, a spring base, a soft elastic sleeve, a lower bushing and a flat bottom cover; the counterweight assembly comprises a driver airbag and an airbag connecting part for accommodating the driver airbag; the spring base, the soft elastic sleeve and the lower bushing all have a middle hole, and the return spring, the spring base and the soft elastic sleeve are all sleeved on the shock absorbing connector through the middle hole; the airbag connecting part is connected to the upper limit of the shock absorbing connector, the airbag connecting part is connected to the top of the return spring, the bottom of the return spring is connected to the spring base, the spring base is connected to the soft elastic sleeve, the lower bushing is sleeved on the soft elastic sleeve, and the flat bottom cover is connected to the bottom end of the shock absorbing connector. The invention has better safety when the airbag is deployed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle steering wheel damping unit and a vehicle steering wheel. Background Art

[0002] The car steering wheel is an important part for controlling the direction of the vehicle. It accurately transfers the driver's will to the tires through a series of steering devices, thereby controlling the direction of the car. But at the same time, the vibration from the vehicle chassis and engine will also be transmitted to the steering wheel through the steering mechanism, causing the steering wheel to shake, which in turn affects the driver's driving comfort and increases driving fatigue.

[0003] The existing connection between the steering wheel and the driver's airbag is a rigid link, which has the disadvantage that when the steering wheel shakes, it has no shock absorption function and is prone to produce abnormal noise on bumpy roads. Therefore, if the steering wheel has a shock absorption function, it can significantly reduce or eliminate the steering wheel shaking phenomenon, improve driving comfort and reduce driving fatigue.

[0004] There are several technical solutions currently available on the market: one is the gas generator shock absorption solution. Figure 1 This is a schematic diagram of the structure of the automobile steering wheel shock absorbing unit using a gas generator in the prior art. Please refer to Figure 1 This solution forms a shock absorbing unit by adding a rubber elastic unit between the driver airbag gas generator 1 and the airbag housing 2. The disadvantage of this solution is that the generator acts as a counterweight, but the total weight of the generator and the counterweight structure attached to its periphery generally does not exceed 400 grams. The counterweight is light and the shock absorbing effect is limited.

[0005] The other is the steering wheel damping block solution, which is to add a cast iron counterweight and a rubber elastic unit to the steering wheel. The disadvantage of this solution is that it takes up a lot of space, increases the overall weight of the steering wheel, and compresses the layout space of other parts. This disadvantage is particularly prominent on steering wheels with more integrated functions. This solution has been gradually eliminated in the market.

[0006] Another shock absorption solution is to use the driver's airbag assembly as a counterweight. Figure 2 This is a schematic diagram of the structure of a car steering wheel shock absorbing unit with a driver airbag assembly as a counterweight in the prior art. Please refer to Figure 2In this solution, the driver airbag assembly as a whole becomes the counterweight in the shock absorbing unit, and the soft shock absorbing sleeve 3 is equivalent to the spring and damping in the shock absorbing unit, and its function is to absorb and dissipate vibration energy to achieve the purpose of steering wheel shock absorption. In this solution, the shock absorbing nail 4 is fixed to the steering wheel side by other parts, and can slide up and down along the hollow soft shock absorbing sleeve 3, the connecting rings 5 ​​and 6, and the connecting body 7. The top of the shock absorbing nail 4 is connected to the retaining spring 8 on the driver airbag through a hook. After assembly, it becomes one with the driver airbag and remains relatively still. When the airbag is pressed downward, the shock absorbing nail 4 slides downward synchronously with the airbag. The disadvantage of this structure is that the retaining spring 8 is the most critical load-bearing part when the airbag is detonated and deployed. It must withstand cyclic fatigue loads and electrical corrosion loads during frequent operation of the steering wheel horn. Long-term use may have uncertain safety risks, such as the retaining spring breaking when the airbag is deployed, which will cause the airbag to separate from the steering wheel and cause harm to the driver.

[0007] Therefore, it is necessary to improve the steering wheel with shock absorption function provided by the prior art to make its shock absorption effect better. Summary of the invention

[0008] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a car steering wheel shock absorbing unit, including a weight assembly, a shock absorbing connecting piece, a return spring, a spring base, a soft elastic sleeve, a lower bushing and a flat bottom cover; the weight assembly includes a driver airbag and an airbag connecting part for accommodating the driver airbag;

[0009] The spring base, the soft elastic sleeve and the lower bushing all have a central hole, and the return spring, the spring base and the soft elastic sleeve are all sleeved on the shock-absorbing connecting piece through the central hole;

[0010] The airbag connecting part is connected to the upper limit of the shock-absorbing connecting piece, the airbag connecting part is connected to the top of the return spring, the bottom of the return spring is connected to the spring base, the spring base is connected to the soft elastic sleeve, the lower sleeve is sleeved on the soft elastic sleeve, and the flat bottom cover is connected to the bottom end of the shock-absorbing connecting piece.

[0011] Furthermore, the soft elastic sleeve is provided with a first slot, and the spring base is provided with a first hook;

[0012] The first clamping groove is arranged at the top of the soft elastic sleeve along the outer circumference, and the first clamping hook is arranged at the bottom of the spring base along the outer circumference, and the first clamping groove is clamped with the first clamping hook.

[0013] Furthermore, the soft elastic sleeve is provided with a second slot, and the shock-absorbing connector is provided with a flange;

[0014] The second slot is arranged near the top of the soft elastic sleeve, and the second slot is arranged on the inner wall of the middle hole of the soft elastic sleeve; the flange is arranged in the middle of the metal hook, the flange protrudes from the outer wall of the shock-absorbing connector, and the flange is engaged with the second slot.

[0015] Furthermore, the airbag connecting part includes a driver airbag housing and a clip spring, and the shock-absorbing connecting piece is provided with a third clip groove;

[0016] The retaining spring is arranged on the driver airbag housing, and a guide hole is arranged on the driver airbag housing; the third retaining groove is arranged along the outer circumference at the top of the shock-absorbing connecting piece, and the third retaining groove cooperates with the retaining spring, and the third retaining groove cooperates with the guide hole with a gap.

[0017] Furthermore, the guide hole housing is fitted with the top of the return spring.

[0018] Furthermore, the spring base is provided with a second hook and a flange surface;

[0019] The second hook is arranged on the top of the spring base, and the second hook is connected to the bottom of the return spring;

[0020] The flange surface is arranged at the bottom of the spring base, and the flange surface is in contact with and matched with the top end surface of the soft elastic sleeve.

[0021] Furthermore, the upper portion of the spring base is clearance-matched with the shock-absorbing connector, and the flange surface at the bottom of the spring base is in contact with the top end surface of the soft elastic sleeve.

[0022] Furthermore, the soft elastic sleeve is provided with a fourth slot;

[0023] The fourth clamping groove is arranged along the outer circumference near the bottom of the soft elastic sleeve, and the soft elastic sleeve is connected to the lower bushing through the fourth clamping groove.

[0024] Furthermore, the soft elastic sleeve is provided with a flange surface;

[0025] The flange surface is arranged on the bottom end surface of the soft elastic sleeve, and the flange surface is in contact and fit with the top end surface of the flat bottom cover.

[0026] A second aspect of the present invention provides a car steering wheel, comprising the car steering wheel shock absorbing unit and a steering wheel frame as described in the first aspect of the present invention, wherein the number of the car steering wheel shock absorbing units is multiple and the car steering wheel shock absorbing units are fixedly connected to the steering wheel frame.

[0027] The implementation of the present invention has the following beneficial effects:

[0028] 1. In the present invention, the airbag connecting part is connected to the upper limit of the shock-absorbing connecting part. The shock-absorbing connecting part does not slide downward with the airbag connecting part when the horn is pressed, and does not bear the pressing fatigue load when the horn is pressed, so that the automobile steering wheel shock-absorbing unit proposed by the present invention is safer when the airbag is deployed.

[0029] 2. The clip of the airbag connecting part of the present invention is connected with the top of the shock-absorbing connecting piece and does not bear the current load, so that the automobile steering wheel shock-absorbing unit proposed by the present invention is safer when the airbag is deployed.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the structure of a car steering wheel shock absorbing unit using a gas generator in the prior art;

[0033] Figure 2 It is a schematic diagram of the structure of a car steering wheel shock absorbing unit in the prior art, in which the driver's airbag assembly is used as a counterweight;

[0034] Figure 3 is a schematic diagram of a shock absorbing unit provided in an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a steering wheel provided in an embodiment of the present invention;

[0036] Figure 5 yes Figure 4 A-A section diagram in;

[0037] Figure 6 is an exploded schematic diagram of the airbag connection part, the shock-absorbing connection part and the steering wheel frame before assembly according to an embodiment of the present invention;

[0038] Figure 7 It is a schematic structural diagram of the airbag connecting part, the shock absorbing connecting part and the steering wheel frame after being assembled according to an embodiment of the present invention;

[0039] Figure 8 It is a partial cross-sectional view of the automobile steering wheel shock absorbing unit proposed in an embodiment of the present invention.

[0040] Among them, 1 - airbag gas generator, 2 - airbag housing, 3 - soft shock-absorbing sleeve, 4 - shock-absorbing nail, 5 and 6 - connecting rings, 7 - connecting body, 8 - retaining spring; 9 - shock-absorbing connecting piece, 10 - return spring, 11 - spring base, 12 - soft elastic sleeve, 13 - lower bushing, 14 - flat bottom cover, 15 - driver airbag housing, 16 - retaining spring, 17 - steering wheel frame. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, fixed connection, detachable connection, or integrated; mechanical connection, or electrical connection; direct connection, or indirect connection through an intermediate medium, or internal connection between two elements or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Example

[0045] The present invention provides a vehicle steering wheel damping unit, and the present embodiment will be described in detail below in conjunction with the accompanying drawings. For simplicity, only those components related to the subject matter described herein are shown in the accompanying drawings. It is understood that many other configurations may be included in the accompanying drawings and many other types of equipment may be used.

[0046] Figure 3 is a schematic diagram of a shock absorbing unit provided in an embodiment of the present invention, specifically as follows Figure 3As shown in the figure, the car steering wheel shock absorption unit is usually composed of a counterweight m, a spring K and a damper Rm. The larger the mass m of the counterweight, the smaller the amplitude generated under the vibration of the same energy; the larger the damper Rm, the faster the vibration energy dissipates; the larger the elastic coefficient k of the spring, the greater the elastic potential energy stored under the same deformation.

[0047] Figure 4 is a schematic diagram of a steering wheel provided in an embodiment of the present invention, Figure 5 yes Figure 4 The A-A section diagram in FIG. Figure 4 and Figure 5 As shown, a car steering wheel shock absorbing unit proposed in an embodiment of the present invention comprises a weight assembly, a shock absorbing connector 9, a return spring 10, a spring base 11, a soft elastic sleeve 12, a lower bushing 13 and a flat bottom cover 14. The weight assembly comprises a driver airbag and an airbag connecting portion for accommodating the driver airbag; the spring base 11, the soft elastic sleeve 12 and the lower bushing 13 all have a middle hole, and the return spring 10, the spring base 11 and the soft elastic sleeve 12 are all sleeved on the shock absorbing connector 9 through the middle hole. The airbag connecting portion is connected to the upper limit of the shock absorbing connector 9, the airbag connecting portion is connected to the top of the return spring 10, the bottom of the return spring 10 is connected to the spring base 11, the spring base 11 is connected to the soft elastic sleeve 12, the lower bushing 13 is sleeved on the soft elastic sleeve 12, and the flat bottom cover 14 is connected to the bottom end of the shock absorbing connector 9, so that the shock absorbing connector 9, the soft elastic sleeve 12 and the lower bushing 13 are reliably fixed on the steering wheel frame 17.

[0048] The function of the counterweight assembly is equivalent to the counterweight block in the shock absorption schematic diagram in the above figure, the function of the reset spring 10 is equivalent to the spring in the shock absorption schematic diagram in the above figure, and the partial function of the soft elastic sleeve 12 is equivalent to the function of the spring in the shock absorption schematic diagram in the above figure, and its main function is equivalent to the damping in the above schematic diagram. Other parts are auxiliary parts whose functions are to connect and fix. The shock absorbing connector 9 can be made of metal or non-metallic material whose hardness meets the use requirements. It should be pointed out that the shock absorbing connector 9 in the embodiment of the present invention is not used as a conductor between the retaining spring 16 and other components (such as a speaker).

[0049] The working principle of the shock absorbing unit is as follows: when the vibration of the automobile engine and the chassis is transmitted to the steering wheel through the suspension and steering mechanism, the steering wheel is stimulated to vibrate. At this time, the counterweight assembly is equivalent to a counterweight block, and the steering wheel also vibrates. At this time, part of the vibration energy is converted into the elastic potential energy of the return spring 10 and the soft elastic sleeve 12, and part of it is converted into heat energy through the compression deformation and vibration friction of the soft elastic sleeve 12. Finally, most of the elastic potential energy is also converted into heat energy dissipation due to the damping effect of the soft elastic sleeve 12, thereby significantly dissipating the vibration energy and reducing the amplitude of the shock wave, thereby achieving the effect of reducing and eliminating the steering wheel shake.

[0050] Figure 6 is an exploded schematic diagram of the airbag connection part, the shock-absorbing connection part and the steering wheel frame before assembly according to an embodiment of the present invention, Figure 7 This is a schematic diagram of the structure of the airbag connection part, the shock-absorbing connection part and the steering wheel frame after assembly according to the embodiment of the present invention. Figure 6 and Figure 7 The driver airbag housing 15 and the clip 16 mounted thereon are assembled as a whole, and are snap-fitted and assembled with the steering wheel frame 17 through the shock-absorbing connecting member 9. Preferably, the shock-absorbing connecting member 9 can be a shock-absorbing nail. Preferably, the shock-absorbing connecting member 9 is made of metal material.

[0051] Figure 8 This is a partial cross-sectional view of the automotive steering wheel shock absorbing unit proposed in the embodiment of the present invention, please refer to Figure 8 The airbag connection part includes a driver airbag housing 15 and a retaining spring 16, wherein the driver airbag housing 15 and the retaining spring 16 are an assembled integral structure. The retaining spring 16 is arranged on the driver airbag housing 15, and a guide hole is arranged on the driver airbag housing 15. The shock absorbing connecting member 9 is provided with a third retaining groove, which is arranged along the outer circumference at the top of the shock absorbing connecting member 9, and the third retaining groove is matched with the guide hole in a clearance, and the third retaining groove is matched with the retaining spring 16.

[0052] When the counterweight assembly is subjected to downward pressure, it can slide downward along the shock-absorbing connector 9 through the guide hole thereon, and reset through the reset spring 10 after the pressure is removed. The third clamping groove on the top of the shock-absorbing connector 9 and the contact and cooperation of the clamping spring 16 have a limiting effect on the driver airbag, ensuring its original position, and fixing the airbag on the steering wheel and preventing it from separating from the steering wheel when the airbag is stimulated to deploy.

[0053] Specifically, the top of the return spring 10 is fitted with the guide hole housing, and the bottom of the return spring 10 is connected with the second hook, which is arranged on the top of the spring base 11. Its function is to lift the driver airbag by pre-compression elastic force, so that the retaining spring 16 on the driver airbag keeps contact with the third retaining groove on the top of the shock-absorbing connector 9, and the driver airbag can be reset after the downward pressing force load applied to the driver airbag is removed.

[0054] The top of the spring base 11 is connected to the return spring 10 through a hook to fix the spring. The hole in the spring base 11 is gap-matched with the shock-absorbing connector 9, and the flange surface at the bottom of the spring base 11 is pressed on the top surface of the soft elastic sleeve 12. At the same time, the hook at the bottom periphery of the spring base 11 is engaged with the groove at the top periphery of the soft elastic sleeve 12 to fix the spring base 11. The function of the spring base 11 is to fix the spring, and it is fixed on the shock-absorbing connector 9 by being engaged with the soft elastic sleeve 12. When the driver's airbag is pressed, the downward load can be evenly distributed on the soft elastic sleeve 12, and the soft elastic sleeve 12 can be protected.

[0055] The top end surface of the soft elastic sleeve 12 contacts and cooperates with the flange surface of the spring base 11, and is sleeved together with the shock-absorbing connector 9 through the internal hole, and is clamped together with the flange protruding from the middle of the shock-absorbing connector 9 through the second clamping groove at the top of the inner hole.

[0056] The first clamping groove on the top periphery of the soft elastic sleeve 12 is clamped with the first clamping hook on the bottom periphery of the spring base 11 to fix the spring base 11. The soft elastic sleeve 12 is fixed on the steering wheel frame 17 after being fitted with the lower bushing 13 through the fourth clamping groove on the bottom periphery. The main function of the soft elastic sleeve 12 is to use the driver airbag as an integral counterweight to convert the kinetic energy of the vibration into the elastic potential energy of the soft elastic sleeve 12 and the heat energy generated by overcoming the compression deformation and friction when the steering wheel vibrates, thereby playing a shock-absorbing role and reducing or eliminating the steering wheel shaking phenomenon.

[0057] The soft elastic sleeve 12 is made of a relatively soft and elastic material, such as silicone, and the flange surface at the lower end thereof can be elastically deformed and then elastically deformed to forcefully pass through the lower bushing 13 to achieve the assembly shown in the figure.

[0058] The flat bottom cover 14 is connected to the shock-absorbing connector 9 by threading or riveting (not shown), and the upper end surface of the flat bottom cover 14 contacts the flange surface at the bottom of the soft elastic sleeve 12, and is pressed together with the plane of the lower end of the frame after being threaded or riveted. The function of the flat bottom cover 14 is to reliably fix the shock-absorbing connector 9, the soft elastic sleeve 12, and the lower bushing 13 on the steering wheel frame 17, becoming a part of the steering wheel, and keeping relatively still and unable to move with the steering wheel frame 17, so as to ensure that when the driver's airbag is stimulated to deploy, the shock-absorbing connector 9 is fixed on the steering wheel frame 17 and does not fall out or separate, thereby ensuring that the airbag will not separate.

[0059] It should be noted that the mechanical connection structure between the steering wheel and the driver airbag in the embodiment of the present invention is a soft connection, and the conventional non-shock-absorbing steering wheel only needs to replace a few parts, such as replacing the soft elastic sleeve 12 with a hard non-elastic sleeve, so that the shock-absorbing function can be switched to the non-shock-absorbing function, and vice versa. Since the parts of the shock-absorbing unit are small, the arrangement space of other parts will not be compressed, and the degree of standardization and generalization is high, so the development cost is lower than that of the conventional solution, and the technical implementation is more flexible.

[0060] Please continue to refer to Figure 4 The embodiment of the present invention further provides a car steering wheel, comprising three car steering wheel shock absorbing units and a steering wheel frame 17 as described in the above embodiment, wherein the three car steering wheel shock absorbing units are spaced apart on the steering wheel. The car steering wheel shock absorbing unit is fixedly connected to the steering wheel frame 17. Alternatively, the number of car steering wheel shock absorbing units can be set to other values ​​(not shown) as required, and the embodiment of the present invention is not limited thereto.

[0061] It can be seen from the above-mentioned embodiments of the automobile steering wheel shock-absorbing unit and automobile steering wheel provided by the present invention that the driver airbag in the embodiment of the present invention as a counterweight block of the shock-absorbing unit can have a mass of 900-1200 grams, and the shock-absorbing effect is more significant; when the steering wheel shakes, the soft connection structure between the steering wheel and the driver airbag can convert the swing kinetic energy of the driver airbag accompanying the shaking into the elastic deformation potential energy and damping heat energy of the soft connection structure, thereby reducing the shaking energy of the steering wheel and achieving the purpose of shock absorption. At the same time, the shock-absorbing connector 9 and the soft elastic sleeve 12 in the present invention are designed with a unique structure so that they do not slide during the operation of pressing the horn, and the driver airbag retaining spring 16 clamped with the top of the shock-absorbing connector 9 does not bear the current and pressing fatigue load, so the safety of the airbag is better when it is deployed.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A car steering wheel damping unit, It is characterized in that The invention comprises a weight balancing component, a shock absorbing connecting piece (9), a return spring (10), a spring base (11), a soft elastic sleeve (12), a lower bushing (13) and a flat bottom cover (14); the weight balancing component comprises a driver airbag and an airbag connecting part for accommodating the driver airbag; The spring base (11), the soft elastic sleeve (12) and the lower bushing (13) all have a central hole, and the return spring (10), the spring base (11) and the soft elastic sleeve (12) are all sleeved on the shock-absorbing connecting member (9) through the central hole; The airbag connecting part is connected to the upper limit of the shock-absorbing connecting piece (9), the airbag connecting part is connected to the top of the return spring (10), the bottom of the return spring (10) is connected to the spring base (11), the spring base (11) is connected to the soft elastic sleeve (12), the lower bushing (13) is sleeved on the soft elastic sleeve (12), and the flat bottom cover (14) is connected to the bottom end of the shock-absorbing connecting piece (9); The soft elastic sleeve (12) is provided with a first clamping groove, and the spring base (11) is provided with a first clamping hook; the first clamping groove is arranged along the outer circumference at the top of the soft elastic sleeve (12), and the first clamping hook is arranged along the outer circumference at the bottom of the spring base (11), and the first clamping groove is clamped with the first clamping hook; The soft elastic sleeve (12) is provided with a second slot, and the shock-absorbing connector (9) is provided with a flange; the second slot is arranged near the top of the soft elastic sleeve (12), and the second slot is arranged on the inner wall of the center hole of the soft elastic sleeve (12).

2. The automotive steering wheel damping unit according to claim 1, It is characterized in that The flange is arranged in the middle of the metal hook, the flange protrudes from the outer wall of the shock-absorbing connecting piece (9), and the flange is engaged with the second clamping groove.

3. The automotive steering wheel damping unit according to claim 1, It is characterized in that The airbag connecting part comprises a driver airbag housing (15) and a clamping spring (16), and the shock-absorbing connecting piece (9) is provided with a third clamping groove; The retaining spring (16) is arranged on the driver airbag housing (15), and a guide hole is arranged on the driver airbag housing (15); the third retaining groove is arranged at the top of the shock-absorbing connecting member (9) along the outer circumference, the third retaining groove cooperates with the retaining spring (16), and the third retaining groove cooperates with the guide hole with a clearance.

4. The automotive steering wheel damping unit according to claim 3, It is characterized in that The guide hole housing is fitted with the top of the return spring (10).

5. The automotive steering wheel damping unit according to claim 1, It is characterized in that The spring base (11) is provided with a second hook and a flange surface; The second hook is arranged on the top of the spring base (11), and the second hook is connected to the bottom of the return spring (10); The flange surface is arranged at the bottom of the spring base (11), and the flange surface is in contact with and fits with the top end surface of the soft elastic sleeve (12).

6. The automotive steering wheel damping unit according to claim 1, It is characterized in that The upper part of the spring base (11) is clearance-matched with the shock-absorbing connecting piece (9), and the flange surface at the bottom of the spring base (11) is in contact with the top end surface of the soft elastic sleeve (12).

7. The automotive steering wheel damping unit according to claim 1, It is characterized in that The soft elastic sleeve (12) is provided with a fourth slot; The fourth clamping groove is arranged along the outer circumference near the bottom of the soft elastic sleeve (12), and the soft elastic sleeve (12) is connected to the lower bushing (13) through the fourth clamping groove.

8. The automotive steering wheel damping unit according to claim 1, It is characterized in that The soft elastic sleeve (12) is provided with a flange surface; The flange surface is arranged on the bottom end surface of the soft elastic sleeve (12), and the flange surface is in contact with and fits with the top end surface of the flat bottom cover (14).

9. A car steering wheel, It is characterized in that The invention comprises the automobile steering wheel shock absorbing unit and the steering wheel frame (17) as claimed in any one of claims 1 to 8, wherein the automobile steering wheel shock absorbing units are multiple in number and the automobile steering wheel shock absorbing units are fixedly connected to the steering wheel frame (17).

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