WO2021232892A1

WO2021232892A1 - Vibration reduction system for steering wheel, and steering wheel

Info

Publication number: WO2021232892A1
Application number: PCT/CN2021/079343
Authority: WO
Inventors: 夏奶志; 耿静泽; 王琴
Original assignee: 延锋汽车智能安全系统有限责任公司
Priority date: 2020-05-20
Filing date: 2021-03-05
Publication date: 2021-11-25
Also published as: CN113696959A

Abstract

A vibration reduction system for a steering wheel, comprising a safety airbag module (2) and a horn apparatus. The safety airbag module comprises a first housing component (5); the horn apparatus comprises a second housing component (6), and a spring (11) that separates the first housing component and the second housing component from each other; the second housing component is configured to be used for being fixedly mounted to a steering wheel body (1); the vibration reduction system for the steering wheel comprises an elastic body (10) mounted to the second housing component and a protective component (12) used for protecting the elastic body; the elastic body is configured to be used for transferring the vibration of a steering wheel main body to the safety airbag module that is used as a mass block; the elastic body has at least one weakening part (10g) for weakening the rigidity of the elastic body; the vibration reduction system for the steering wheel has a compensation bump (12d); and the compensation bump is configured to be used for compensating for the size of the outer contour of the safety airbag module. The vibration reduction system for the steering wheel can be improved in the aspect of reducing the inherent vibration frequency, and ensures that a safety airbag and the horn apparatus are good in function. Further disclosed is a steering wheel.

Description

Steering wheel damping system and steering wheel

Technical field

The present invention relates to the field of vehicles, and more specifically to a steering wheel damping system and a steering wheel with such a steering wheel damping system.

Background technique

Steering wheels are widely used in modern vehicles to provide steering functions. Typically, the steering wheel may include an airbag module and a sounding device for the vehicle horn, which may be installed in the center of the steering wheel. The vehicle may vibrate when driving, for example, due to the idling operation of the vehicle's engine, due to uneven road surface, due to various factors such as the tire deformation process of the vehicle. The vibration of the vehicle can be transmitted to the steering wheel. Vibration on the steering wheel may affect the comfort of the driver of the vehicle.

Some steering wheel vibration damping systems are known in the prior art, which include an elastic body as a spring element and an airbag module as a vibrating mass. The elastic body is configured to transmit the vibration of the steering wheel body to the airbag module. When the vibration of the vehicle is transmitted to the steering wheel body, the steering wheel damping system including the elastic body and the vibrating mass can partially absorb the vibration of the steering wheel body and improve the comfort of the driver holding the steering wheel rim. Related prior art can refer to CN103140387B, CN105667443B, CN209921405U and CN110962911A, for example.

Summary of the invention

The inventor of the present application discovered in the research of steering wheel vibration damping system: the known steering wheel vibration damping system is difficult to meet the expectations of some users to reduce the vibration damping frequency; the airbag module may deviate from the predetermined outer contour size relative to the steering wheel body For example, the collapse of the steering wheel body is related to the deformation of the elastic body under the action of gravity, especially when the elastic body is weakened for low frequency of the steering wheel damping system; the known steering wheel damping system has a complicated structure and is not easy to assemble.

Therefore, the object of the present invention is to provide a steering wheel damping system and a steering wheel having such a steering wheel damping system, wherein the steering wheel damping system is improved in reducing the natural vibration frequency, while the airbag module can maintain a predetermined Relative to the outer contour size of the steering wheel body.

According to the first aspect of the present invention, a steering wheel damping system is proposed, which includes an airbag module for the steering wheel and a sounding device for the horn of a vehicle, the airbag module includes a first housing part, and the button A second housing part of the sound device and a pressing spring separating the first housing part and the second housing part from each other, the second housing part being configured to be fixedly mounted to the steering wheel body, the steering wheel damping vibration The system includes an elastic body mounted to the second housing part and a protective part for protecting the elastic body, the elastic body being configured to transmit vibration of the steering wheel body to the airbag module as a mass and the first housing part The elastic body has at least one weakened portion for weakening the rigidity of the elastic body, the weakened portion is configured to reduce the natural frequency of the steering wheel damping system, and the steering wheel damping system has a compensation bump, the The compensation bump is configured to compensate the outer contour size of the airbag module.

The steering wheel vibration damping system according to the present invention can well meet the expectations of some users for low-frequency vibration damping, improve the comfort of the driver, is easy to install, and can ensure the functions of the airbag module and the pressing device.

In the present invention, the weakened portion can be used to adjust the natural vibration frequency of the steering wheel vibration reduction system in the low-frequency direction, the compensation bump can be used to compensate the outer contour size of the airbag module, and the other parts of the steering wheel vibration reduction system can remain basically unchanged . This can be advantageous in the manufacture and installation of steering wheel vibration damping systems.

In some embodiments, the elastic body may be configured in a cylindrical shape. The elastic body may have a circular cross-section or a non-circular cross-section. The cross section of the elastic body may remain unchanged or change in the axial direction.

In some embodiments, the elastic body may be configured as a hollow cylinder, and the elastic body may have a central hole.

In some embodiments, the protective member may be configured as a protective bushing, and the protective bushing may have a hollow cylindrical portion inserted into the center hole of the elastomer.

In some embodiments, the protective bushing may provide protection for the axial end surface and/or the central hole of the upper part of the elastomer.

In some embodiments, the steering wheel damping system may include a connecting device, which may define a maximum separation position of the first housing part relative to the second housing part under the force of the pressing spring.

In some embodiments, the connecting device may pass through the central hole of the elastic body, the hollow cylindrical portion of the protective bushing, and the pressing spring. As a result, a particularly compact structure can be achieved, in which the elastic body, the protective bushing and the pressing spring can be arranged substantially coaxially. The elastic body, the protective bushing and the pressing spring can be matched with the common receiving hole of the second housing part, without the need for the elastic body and the protective bushing on the one hand and the pressing spring on the second housing part on the other hand. Separate receiving holes are provided on the upper side.

In some embodiments, the connection device may be a bolt connection device or a riveting connection device. In some embodiments, the connecting device may also be a non-detachable connecting structure.

In some embodiments, the bolt connection device may include a step nut and a bolt screwed into the step nut. The step nut is fastened to the first housing part by the bolt, and the step of the step nut It can be blocked against at least one of the second housing part, the elastic body and the protective bushing in the maximum separation position, for example only against the elastic body, or only against the protective bushing, or The block rests on the second housing part and the protective bushing.

In some embodiments, the weakened portion may include at least one groove extending in the inner circumferential surface of the elastomer. The groove may extend over the entire axial length of the central hole of the elastomer, or only extend over a part of the axial length. The groove may extend in the axial direction of the elastic body, or may extend in a direction deviating from the axial direction, for example, in a spiral shape. The groove may extend continuously or intermittently. In principle, the groove may have any cross-sectional shape, for example, a substantially semicircular, substantially rectangular, or substantially triangular cross-sectional shape. The cross-sectional shape of the groove may remain unchanged or change in the extending direction of the groove.

As an alternative or supplement to the aforementioned groove, the weakened portion may include at least one groove extending in the outer peripheral surface of the elastomer; and/or at least one hole extending in the matrix of the elastomer. The hole may be a through hole or a blind hole.

In some embodiments, the weakened portion may include at least one groove extending in the axial direction in the inner circumferential surface of the elastic body.

In some embodiments, the weakened portion may include at least two groups of grooves extending in the axial direction in the inner circumferential surface of the elastic body, and the grooves of each group are mutually in the circumferential direction of the elastic body. They are arranged adjacently, and each group is arranged distributedly in the circumferential direction of the elastic body. For example, the weakened portion may include two sets of grooves extending in the axial direction in the inner circumferential surface of the elastic body, the grooves of each set are arranged adjacent to each other in the circumferential direction of the elastic body, and The two groups are arranged opposite to each other.

In some embodiments, the natural vibration frequency of the steering wheel damping system can be affected by at least one of the following parameters: the number of grooves, the extending direction of the grooves, the cross-sectional shape of the grooves, and the depth of the grooves. And width and extension length.

In some embodiments, the compensation amount of the compensation bump may be affected by at least one of the following parameters: the shape and area of the compensation bump, the height of the compensation bump, and the position of the compensation bump.

In some embodiments, the compensation bump may be provided on at least one of the protective part, the elastic body, and the second housing part. For example, the compensation bump may be provided only on the protective part, or may be provided only on the second housing part, or may be provided not only on the protective part but also on the second housing part.

In some embodiments, the compensation bump may be arranged at a six o'clock position on the surface of the protection member facing the elastic body, and the compensation bump forms a surface contact with the elastic body.

In some embodiments, the compensation bump may be a planar bump.

In some embodiments, the protective member may have arcuate bumps disposed at the three o'clock and nine o'clock positions on the surface of the protective member facing the elastic body, and the arcuate bumps and the elastic body A line contact is formed, and the line of contact forms a pivot axis of the protection member relative to the elastic body.

In some alternative embodiments, the protective member may have a compensation protrusion set at the six o'clock position, and the elastic body may have a curved protrusion set at the three o'clock and nine o'clock positions.

In some embodiments, the second housing member may have a receiving hole for receiving the elastic body and the protective member, and the elastic body, the protective member and the receiving hole have no relative rotation in the axial direction.

In some embodiments, the elastic body may have a pin-like element that can be inserted into a positioning hole of the second housing part adjacent to the receiving hole.

In some embodiments, the elastic body may have a protrusion, and the protective member may have a notch, and the protrusion can be received in the notch.

In some embodiments, the receiving hole may have an inner peripheral surface, a stepped surface extending radially outward at the upper portion, and a stepped surface extending radially inward at the bottom. One side of the first housing part is installed in the receiving hole, the elastic body has an outer peripheral surface opposite to the inner peripheral surface of the receiving hole and an upper flange, and the bottom area of the elastic body is supported on the bottom of the receiving hole. On the stepped surface, and the flange of the elastic body is supported on the stepped surface of the upper part of the receiving hole.

In some embodiments, the receiving hole may have an inner peripheral surface, a stepped surface extending radially inward at the upper part, and a stepped surface extending radially outward at the bottom, and the elastic body can deviate from the second housing part. One side of the first housing member is installed in the receiving hole, the elastic body has an outer peripheral surface opposite to the inner peripheral surface of the receiving hole and a lower flange, and the upper region of the elastic body is supported on the upper part of the receiving hole. On the stepped surface, and the flange of the elastic body is supported on the stepped surface at the bottom of the receiving hole.

In some embodiments, the second housing part may be configured in a U-shape, and may have three receiving holes, one of which is arranged at the bottom of the U-shape, and the other two are arranged in the U-shape. In the free end area, each receiving hole is equipped with the elastic body, the protective member and the pressing spring. Generally speaking, there may be a single combined body or multiple combined bodies. The combined body may include the receiving hole of the second housing part, the elastic body, the protective part and the pressing spring, and they may be equipped with a connecting device, for example. , Especially the bolt connection device.

In some embodiments, the pressing device may include a pressing down piece, and the pressing down piece may have a restricting element configured to restrict the maximum amount of movement of the protective member and the elastic body. The restriction element can prevent the elastic body and the protective part from moving excessively. Such excessive movement may shorten the life of the elastomer, and may even cause the elastomer and the protective component to leave the installation position.

In some embodiments, the stiffness of the elastic body may be significantly less than the stiffness of the pressing spring, for example, it may be at least 2 times, preferably at least 3 times, such as at least 4 times lower than the stiffness of the pressing spring.

According to a second aspect of the present invention, a steering wheel is proposed, which includes a steering wheel main body in which the steering wheel damping system according to the first aspect of the present invention is provided. The steering wheel has technical advantages related to the above-mentioned steering wheel damping system.

Description of the drawings

Hereinafter, the present invention will be explained in more detail with the help of specific embodiments with reference to the drawings. in:

Figure 1 is a top view of a steering wheel with a steering wheel damping system according to an embodiment of the present invention;

Figure 2 is a cross-sectional view of the steering wheel damping system of Figure 1 along half of the section line A-A;

Figure 3 is a perspective view of a structural assembly of the steering wheel damping system of Figure 1;

Figure 4 is a partial cross-sectional view of the steering wheel damping system of Figure 1;

Fig. 5 is a perspective view of an elastic body of the steering wheel damping system of Fig. 1;

Fig. 6 is a perspective view of the protective bushing of the steering wheel damping system of Fig. 1;

Figure 7 is a partial cross-sectional view of a steering wheel damping system according to another embodiment;

8A and 8B are perspective views of elastomers according to other embodiments.

Detailed ways

FIG. 1 is a top view of a steering wheel having a steering wheel vibration damping system according to an embodiment, and FIG. 2 is a cross-sectional view of the steering wheel vibration damping system of FIG. 1 along a half of the section line A-A. The steering wheel may have a steering wheel main body 1, and the steering wheel main body may have a metal skeleton, and the metal skeleton may be wrapped with a flexible material. An airbag module 2 may be provided in the center of the steering wheel body 1. A sounding device for the vehicle horn can be arranged under the airbag module 2. Typically, the airbag module 2 may include an airbag door cover 3 and a first housing part 5 connected to the airbag door cover 3. The airbag door cover 3 and the first housing part 5 may constitute the housing of the airbag module, The housing has an accommodation chamber for accommodating the folded air bag 4. Typically, the inflator 7 is arranged in the center of the bottom of the housing of the airbag module, and can quickly inflate the folded airbag 4 when triggered, and the inflated airbag is then ejected from the airbag door cover 3 to provide vehicle occupants with safety protection. Typically, the inflator 7 may be a pyrotechnic gas generator.

In the illustrated embodiment, the first housing part 5 can be regarded as a common part of the airbag module 2 and the pressing device, wherein the pressing contact of the pressing device can be arranged on the first housing part. In some embodiments that are not shown, the airbag module 2 and the pressing device may each have its own housing parts, which can be fixedly connected to each other, and the pressing contacts are arranged in their own housing parts of the pressing device. superior.

FIG. 3 is a perspective view of a structural assembly of the steering wheel vibration damping system of FIG. In Fig. 3, there are 3) receiving holes 13. Each receiving hole can receive an elastic body 10 and a protective member 12, as will be explained in more detail later. FIG. 4 is a partial cross-sectional view of the steering wheel damping system of FIG. 1, and the structure related to a centered receiving hole 13 is described. 5 and 6 respectively depict the elastic body 10 and the protective member 12 disposed in the center receiving hole. The situation may be the same or similar for the other two receiving holes 13 provided on the end side, the elastic body 10 and the protective member 12 accommodated.

Typically, the pressing device may include pressing the upper piece and pressing the lower piece 9. The press top piece may be integrated into the first housing part 5 or may be connected to the first housing part 5 as a separate part. The press top piece may have press contacts. The click lower piece 9 may be mounted to the second housing part 6, and may have a click wire 9a. The button 9 can also be integrated into the second housing part 6. The pressing device may include a pressing spring 11 that separates the upper pressing piece and the lower pressing piece, or separates the first and

second housing parts

5 and 6. When the airbag module 2 is pressed, the first housing part 5 can overcome the spring force of the pressing spring 11 to move toward the second housing part 6; therefore, the pressing contact that moves together with the first housing part and the first housing part The fixed ringing wire 9a of the second housing part 6 is in contact and conduction, so the vehicle horn can be sounded. When the pressure on the airbag module 2 is released, the first housing part 5 can be separated from the second housing part 6 under the action of the spring force of the pressing spring 11, so the pressing contact and the pressing wire 9a are separated , The vehicle horn can stop sounding.

As shown in FIG. 4, the receiving hole 13 may have an inner peripheral surface 6a, an upper step surface 6b extending radially outward, and a bottom step surface 6c extending radially inward.

As shown in FIGS. 4 and 5, the elastic body 10 may be configured in a hollow cylindrical shape, especially a hollow cylindrical shape. The elastic body 10 may have an inner peripheral surface 10a defining a central hole, an outer peripheral surface 10b opposite to the inner peripheral surface of the receiving hole, and an upper flange 10c. The bottom area 10d of the elastic body 10 may be supported on the step surface 6c. The flange 10c of the elastic body 10 can be supported on the step surface 6b. More specifically, the flange 10c of the elastic body 10 may have a first surface facing away from the receiving hole 13 and a second surface facing the receiving hole 13, and the second surface may rest on the step surface 6b.

The elastic body 10 can be received in the receiving hole 13 without relative rotation. To this end, for example, the elastic body 10 may have a pin-like element 10 f that can be inserted into the positioning hole 6 d of the second housing part 6 adjacent to the receiving hole 13. Alternatively, it is also possible that the elastic body 10 and the receiving hole 13 may have a non-circular cross section, for example, may have a substantially rectangular cross section.

The elastic body 10 may have at least one weakened portion 10g in its inner peripheral surface 10a, for example, two weakened portions facing each other, as shown in FIG. 5. The weakened portion may extend axially. The weakened portion may have any cross-section, for example, the cross-sectional shape may be a circular ring section, a substantially rectangular shape, a substantially triangular shape, or the like. The weakened portion can weaken the rigidity of the elastic body and reduce the natural vibration frequency of the steering wheel vibration damping system.

As shown in Figs. 4 and 6, the protective member 12 may be configured as a protective bushing. The protective bushing may have a hollow cylindrical portion 12a and a flange 12b. The hollow cylindrical portion may be inserted into the center hole of the elastic body 10. The flange 12b may abut against the upper axial end surface of the elastic body 10. The surface of the flange 12b facing away from the elastic body can support the pressing spring 11. The protective member 12 may be provided without relative rotation with the elastic body 10. For example, the elastic body 10 may have a protrusion 10e, and the protective member 12 may have a notch 12c in which the protrusion is received. It is also possible that the central hole of the elastic body 10 and the hollow cylindrical portion 12a of the protective member 12 have non-circular cross-sections. The protective component 12 may have a compensation bump 12d configured to compensate the outer contour size of the airbag module. The airbag module 2 is supported on an elastic body 10 having a weakened portion, and the elastic body 10 is compressed by a mass including the airbag module 2. Compared with the case where the elastic body has no weakened portion, the elastic body with the weakened portion is compressed to a greater extent, which can cause the outer contour size of the airbag module to deviate from the design. The compensation bump 12d can compensate the outer contour size of the airbag module. It is particularly advantageous that the compensation bump 12d can be arranged at the six o'clock position. The compensation bump 12d may have a flat surface, and thus form a surface contact with the elastic body 10. As a supplement, arc-surfaced bumps 12e may be provided at the three o'clock and nine-o'clock positions of the protective bushing 12, respectively, and the arc-surfaced bumps may form line contact with the elastic body 10. Through the combination of one compensating bump 12d and two cambered bumps 12e, on the one hand, the outer contour size of the airbag module can be well compensated, and on the other hand, the freedom of movement can be released to the greatest extent under the vibration damping state. The absorption of vibration energy is optimized. The height and plane size of the compensation bump can be appropriately selected to ensure a good match between the airbag module and the steering wheel. In order to prevent excessive movement of the protective member 12 and the elastic body 10, the pressing lower piece 9 may have a stop element for limiting the maximum movement amount of the protective member 12 and the elastic body 10.

In some embodiments that are not shown, the compensation bumps and/or the cambered bumps may also be formed on the upper axial end surface of the elastic body 10. In some embodiments that are not shown, the compensation bump and/or the cambered bump may also be formed on the second surface of the flange 10c of the elastic body 10 facing the receiving hole. In some embodiments not shown, the compensation bumps and/or the cambered bumps may also be formed on the bottom area 10d of the elastic body 10. In some embodiments that are not shown, the compensation bumps and/or arc-surfaced bumps may also be formed on the step surface 6b and/or the step surface 6c of the receiving hole 13.

The first housing part 5 can be kept from being separated from the second housing part 6 by a connecting device. As shown in FIG. 4, the connecting device may include a stepped nut 8 and a bolt 14, and the stepped nut is fastened to the first housing part 5 by bolts. The stepped nut has a step, which is stopped in the axial direction by the second housing part 6 and/or the elastic body 10 and/or the protection part 12, so that the first housing part 5 presses the spring force of the spring 11 Under the action of, it is separated from the second housing part 6 at a predetermined distance.

FIG. 7 is a partial cross-sectional view of a steering wheel damping system according to another embodiment. The difference between this embodiment and the previous embodiment is mainly in the design of the receiving hole 13 of the second housing part 6 and the elastic body 10. Here, the receiving hole 13 may have an inner peripheral surface 6a, an upper step surface 6b extending radially inward, and a bottom step surface 6c extending radially outward. The elastic body 10 may be configured in a hollow cylindrical shape, installed upward from the bottom of the receiving hole 13, received in the receiving hole 13 and supported on the two stepped

surfaces

6 b and 6 c of the receiving hole 13. The elastic body 10 may have a bottom flange 10c, which is supported on the step surface 6c. The upper region of the elastic body 10 may be supported on the step surface 6b. The protective member 12 may be configured the same as or similar to the foregoing embodiment. For other aspects, reference may be made to the description of the foregoing embodiments.

8A and 8B are perspective views of an elastic body 10 according to another embodiment, wherein the elastic body 10 has two sets of weakened portions 10g diametrically opposed to each other, and each set may include a plurality of weakened portions, wherein, The weakened portion shown in FIG. 8A may be substantially semi-cylindrical, and the weakened portion shown in FIG. 8B may have a substantially rectangular cross section. In some embodiments that are not shown, the elastic body 10 may have at least one weakened portion in its outer peripheral surface, for example, multiple or multiple sets of weakened portions uniformly distributed on the outer peripheral surface. In some embodiments that are not shown, the elastic body 10 may have holes in its base body, for example, blind holes extending in the axial direction. As the weakened portion, for example, it may have four holes evenly distributed in the circumferential direction. In some embodiments not shown, the weakened portion may also extend in a direction other than the axial direction.

It should be noted that the terminology used here is only for the purpose of describing specific aspects, not for limiting the disclosure. The singular forms "a" and "the one" as used herein shall not exclude plural forms, unless the context clearly states otherwise. It can be understood that the terms "including" and "including" and other similar terms, when used in the application documents, specify the existence of the stated operations, elements and/or components, and do not exclude one or more other operations and elements. The presence or addition of, components and/or their combinations. The term "and/or" as used herein includes all any combinations of one or more related listed items. In the description of the drawings, similar reference numerals always indicate similar elements.

The thickness of the elements in the drawings may be exaggerated for clarity. In addition, it can be understood that if an element is said to be on, coupled with, or connected to another element, then the one element may be directly formed on, coupled to, or coupled to the other element. Connected to it, or there can be one or more intervening elements between them. On the contrary, if the expressions "directly on", "directly coupled with" and "directly connected with" are used here, it means that there are no intervening elements. Other words used to describe the relationship between elements should be interpreted similarly, such as "between" and "directly between", "attached" and "directly attached", "adjacent" and " Directly adjacent" and so on.

Herein terms such as "top", "bottom", "above", "below", "above", "below", etc. are used to describe one element, layer or region as shown in the drawings relative to another The relationship between components, layers, or regions. It can be understood that in addition to the orientations described in the drawings, these terms should also include other orientations of the device.

It can be understood that although the terms "first", "second", etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, the first element may be referred to as the second element without departing from the teaching of the inventive concept.

It is also conceivable that all the exemplary embodiments disclosed herein can be combined with each other arbitrarily.

Finally, it should be pointed out that the above-mentioned embodiments are only used to understand the present invention, and do not limit the protection scope of the present invention. For those skilled in the art, modifications can be made on the basis of the foregoing embodiments, and these modifications do not depart from the protection scope of the present invention.

Claims

A steering wheel vibration damping system, which includes an airbag module (2) for a steering wheel and a sounding device for a vehicle horn. The airbag module includes a first housing part (5), and the sounding device includes A second housing part (6) and a pressing spring (11) separating the first housing part and the second housing part from each other, the second housing part being configured to be fixedly mounted to the steering wheel body (1) ), the steering wheel vibration damping system includes an elastic body (10) mounted to the second housing member and a protective member (12) for protecting the elastic body, the elastic body is configured to transmit vibration of the steering wheel body to The airbag module as a mass is characterized in that the elastic body has at least one weakened portion (10g) for weakening the rigidity of the elastic body, and the weakened portion is configured to reduce the natural frequency of the steering wheel vibration damping system, In addition, the steering wheel damping system has a compensation bump (12d) configured to compensate the outer contour size of the airbag module.
The steering wheel damping system according to claim 1, wherein the elastic body is configured as a hollow cylinder, the elastic body has a central hole, and the protection member is configured as a protection bushing, the protection lining The sleeve has a hollow cylindrical portion (12a) inserted into the center hole of the elastomer;

Preferably, the steering wheel damping system includes a connecting device that defines the maximum separation position of the first housing part relative to the second housing part under the force of the pressing spring, and the connecting device passes through the The center hole of the elastic body, the hollow cylindrical part of the protective bushing and the pressing spring;

Further preferably, the connecting device is a bolt connecting device, and the bolt connecting device includes a step nut (8) and a bolt (14) screwed into the step nut, and the step nut is fastened to the first step nut by the bolt. On the housing part, and the step of the step nut can block at least one of the second housing part, the elastic body and the protective bushing at the maximum separation position.
The steering wheel vibration damping system according to any one of claims 1 to 2, wherein the weakened portion includes at least one of the following components:

At least one groove extending in the inner circumferential surface of the elastomer;

At least one groove extending in the outer circumferential surface of the elastomer;

At least one hole extending in the matrix of the elastomer;

Preferably, the weakened portion includes at least one groove extending in the axial direction in the inner circumferential surface of the elastic body;

Further preferably, the weakened portion includes at least two groups of grooves extending in the axial direction in the inner circumferential surface of the elastic body, and the grooves of each group are adjacent to each other in the circumferential direction of the elastic body. And each group is distributed in the circumferential direction of the elastic body.
The steering wheel vibration damping system according to any one of claims 1 to 3, wherein the compensation bump is provided on at least one of the protective part, the elastic body and the second housing part.
The steering wheel vibration damping system according to any one of claims 1 to 4, wherein the compensation bump is provided at a six o'clock position on the surface of the protective member facing the elastic body, and the compensation bump Form surface contact with the elastomer;

Preferably, the compensation bump is a plane bump;

Preferably, the protective member has arcuate bumps (12e) arranged at the three o'clock and nine o'clock positions on the surface of the protective member facing the elastic body, and the arcuate bumps and the elastic body form Line contact, the line of contact forms the pivot axis of the protective member relative to the elastic body.
The steering wheel vibration damping system according to any one of claims 1 to 5, wherein the second housing part has a receiving hole (13) for receiving the elastic body and the protective part, and the elastic The body, the protective part and the receiving hole have no relative rotation in the axial direction;

Preferably, the elastic body has a pin-shaped element (10f) that can be inserted into the positioning hole (6d) of the second housing part adjacent to the receiving hole;

Preferably, the elastic body has a protrusion (10e), the protection member has a notch (12c), and the protrusion can be received in the notch.
The steering wheel vibration damping system according to claim 6, wherein the receiving hole has an inner peripheral surface, an upper step surface extending radially outward, and a bottom step surface extending radially inward, and the elastic The body can be installed into the receiving hole from the side of the second housing member facing the first housing member. The elastic body has an outer peripheral surface opposite to the inner peripheral surface of the receiving hole and an upper flange. The bottom area is supported on the step surface of the bottom of the receiving hole, and the flange of the elastic body is supported on the step surface of the upper portion of the receiving hole; and/or

The receiving hole has an inner peripheral surface, a stepped surface extending radially inward on the upper portion, and a stepped surface extending radially outward on the bottom portion. Side mounted into the receiving hole, the elastic body has an outer peripheral surface opposite to the inner peripheral surface of the receiving hole and a lower flange, the upper area of the elastic body is supported on the step surface of the upper part of the receiving hole, and the The flange of the elastic body is supported on the step surface at the bottom of the receiving hole; and/or

The second housing part is configured to be U-shaped and has three receiving holes, one of which is arranged at the bottom of the U-shape, and the other two are arranged in the free end region of the U-shape, Each receiving hole is equipped with the elastic body, the protective member and the pressing spring.
The steering wheel vibration damping system according to any one of claims 1 to 7, wherein the pressing device comprises a pressing button (9), and the pressing button has a limiting element, and the limiting element It is configured to limit the maximum amount of movement of the protective member and the elastic body.
A steering wheel, comprising a steering wheel main body (1), characterized in that the steering wheel vibration damping system according to any one of claims 1 to 8 is provided in the steering wheel main body.