CN219734088U - A column resonator - Google Patents

Abstract

The utility model relates to a column resonator. The column resonator includes: an inner tube, with a limit plate at one end of the inner tube; an outer tube, arranged outside the inner tube and coaxial with the inner tube; a mass block, in the shape of a hollow cone, and the outer tube is interference fit Press-fitted into the mass block; the rubber body is arranged between the inner tube and the outer tube; a first gap is formed between the bottom surface of the mass block and the limiting plate. The utility model proposes a column resonator, which has a compact overall structure and can extend its service life.

Description

A column resonator

Technical field

The utility model relates to the technical field of vehicle structure design and manufacturing, and in particular to a column resonator.

Background technique

When cars are used by users, there are various NVH (Noise, Vibration, Harshness, Noise, Vibration and Harshness) problems. This is a comprehensive issue to measure the quality of automobile manufacturing, and it gives car users the most direct and superficial feeling. The NVH problem of vehicles is one of the issues that major vehicle manufacturing companies and parts companies in the international automobile industry are most concerned about. Statistics show that about 1/3 of vehicle failure problems are related to vehicle NVH problems, and major companies spend nearly 20% of their R&D expenses on solving vehicle NVH problems.

For NVH problems, the most common solution is to add resonators to absorb vibrations. Its principle of absorbing vibration is that the rubber is compressed by force to drive the vibration of the mass block. Finally, the rubber absorbs energy and attenuates the vibration until the entire vehicle cannot sense it.

However, if the resonator is used in a harsh environment, such as when the vehicle passes through ditches or bumps, the vibration acceleration and vibration displacement near the wheels are large, the rubber of the resonator is prone to damage, thereby reducing the vibration absorption performance of the resonator.

Utility model content

In view of the above-mentioned problems of the prior art, the present utility model proposes a column resonator, which has a compact overall structure and can extend its service life.

Specifically, the utility model proposes a column resonator, which is suitable for vehicles and includes:

Inner tube, a limit plate is provided at one end of the inner tube;

An outer tube, arranged outside the inner tube and coaxial with the inner tube;

The mass block is in the shape of a hollow cone, and the outer tube is press-fitted into the mass block through an interference fit;

a rubber body arranged between the inner tube and the outer tube;

A first gap is formed between the bottom surface of the mass block and the limiting plate.

According to an embodiment of the present invention, an anti-collision pad is provided on the bottom surface of the mass block.

According to an embodiment of the present invention, the width of the first gap is greater than 2 mm and less than 5 mm.

According to an embodiment of the present invention, a second gap is formed between the top of the mass block and the inner tube.

According to an embodiment of the present invention, the width of the second gap is greater than 2 mm and less than 5 mm.

According to an embodiment of the present invention, the rubber body is vulcanized between the inner tube and the outer tube.

According to an embodiment of the present invention, the anti-collision pad is annular and is riveted and fixed to one end of the inner tube.

According to one embodiment of the present invention, the outer edge of the bottom surface of the mass block extends axially along the inner tube to form a convex portion.

According to an embodiment of the present invention, the rubber body is provided with grooves on both sides in the axial direction of the inner tube.

According to an embodiment of the present invention, the resonator further includes bolts that penetrate into the inner tube and are threadedly matched and fixed with the inner tube.

The utility model provides a column resonator that forms a first gap between the bottom surface of the mass block and the limiting plate. The first gap limits the vibration displacement of the mass block, thereby effectively reducing the amount of movement of the rubber. It is helpful to reduce the possibility of damage to the rubber body, thereby maintaining the vibration absorption performance of the resonator and extending its service life.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Description of the drawings

The accompanying drawings are included to provide further explanation of the present invention and are incorporated in and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the description serve to explain the principles of the present invention. In the attached picture:

Figure 1 shows a schematic structural diagram of a column resonator according to an embodiment of the present invention.

Among them, the above-mentioned drawings include the following reference signs:

Column Resonator 100

Top cover outer panel 101

Bow beam 102

First reference hole 103

Second reference hole 104

Glue tank 105

Electrophoresis exhaust station 106

Sinking Cavity 107

Weight reduction hole 108

Expanding glue 109

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application or its application or uses. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the application unless specifically stated otherwise. At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered a part of the specification. In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.

In the description of this application, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom", etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or components. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the scope of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms can be used here, such as "on...", "on...", "on the upper surface of...", "above", etc., to describe what is shown in the figure. The spatial relationship between one device or feature and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a feature in the figure is turned over, then one feature described as "above" or "above" other features or features would then be oriented "below" or "below" the other features or features. under other devices or structures". Thus, the exemplary term "over" may include both orientations "above" and "below." The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define parts is only to facilitate the distinction between corresponding parts. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood. To limit the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant based on his or her judgment, and their detailed meanings are set out herein. stated in the relevant section of the description. Furthermore, the application is required to be understood not merely by the actual terms used, but also by the meaning connoted by each term.

Figure 1 shows a schematic structural diagram of a column resonator according to an embodiment of the present invention. As shown in the figure, a column resonator 100 suitable for vehicles mainly includes an inner tube 101, an outer tube 102, a mass 103 and a rubber body 104, which are arranged basically coaxially.

A limiting plate 105 is provided at one end of the inner tube 101 .

The outer tube 102 is arranged outside the inner tube 101 .

The mass block 103 has a hollow conical shape, and the outer tube 102 is press-fitted into the mass block 103 through an interference fit. The mass block 103 and the outer tube 102 are placed on the inner tube 101 at intervals. The mass block 103 can increase the weight of the column resonator 100 and facilitate the shape of the column resonator 100 .

The rubber body 104 is arranged between the inner tube 101 and the outer tube 102 .

The bottom surface of the vertebral body of the mass block 103 is close to the limiting plate 105, and a first gap 106 is formed between the bottom surface and the limiting plate 105. Since the vibration energy received by the column resonator 100 comes from the axial and radial directions (consistent with the axial and radial directions of the inner tube 101), when the vibration energy comes from the axial direction, the mass block 103 compresses and vibrates to the limit along with the rubber body 104. The position of the position plate 105 moves, and the axial displacement of the mass block 103 is limited within the width range of the first gap 106 . The axial displacement of the mass block 103 is limited, which can effectively reduce the corresponding movement amount (displacement amount) of the rubber body 104, which is beneficial to reducing the possibility of damage to the rubber body 104, thus improving the fatigue resistance of the column resonator 100 and extending its use. life.

Preferably, an anti-collision pad 107 is provided on the bottom surface of the mass block 103 . Since both the mass block 103 and the limiting plate 105 are made of rigid materials, the anti-collision pad 107 is provided to reduce possible vibration impacts between the mass block 103 and the limiting plate 105 . It is easy to understand that when the anti-collision pad 107 is provided, the first gap 106 is formed between the anti-collision pad 107 and the limiting plate 105 .

Preferably, the width of the first gap 106 is greater than 2 mm and less than 5 mm. The structure and mass of the mass block 103 and the stiffness of the rubber body 104 are calculated according to the need to absorb vibration energy, and then the width of the first gap 106 is selected and determined to improve the fatigue resistance of the column resonator 100 .

Preferably, a second gap 108 is formed between the top of the mass block 103 and the inner tube 101 . When the vibration energy comes from the radial direction, the mass 103 moves in the radial direction as the rubber body 104 is forced to compress and vibrate, and the radial displacement is limited within the width of the second gap 108 . The limited radial displacement of the mass 103 can effectively reduce the corresponding radial movement (displacement) of the rubber body 104, which is beneficial to reducing the possibility of damage to the rubber body 104 and also improves the fatigue resistance of the column resonator 100.

In addition, when the vibration energy deviates from the radial direction and the axial direction, referring to FIG. 1 , the mass block 103 rotates along the paper surface of FIG. 1 as the rubber body 104 is forced to compress and vibrate. It is easy to understand that at this time, the mass block 103 is limited by the first gap 106 and the second gap 108 at the same time, thereby avoiding a large displacement of the rubber body 104 and thus ensuring the vibration absorption performance of the column resonator 100 .

Preferably, the width of the second gap 108 is greater than 2 mm and less than 5 mm. Similar to the first gap 106 , the width of the second gap 108 is selected and determined to improve the fatigue resistance of the column resonator 100 .

Preferably, the rubber body 104 is vulcanized and integrally formed between the inner tube 101 and the outer tube 102 .

Preferably, the anti-collision pad 107 is annular and is riveted and fixed to one end of the inner tube 101 to form a stable structure.

Preferably, the outer edge of the bottom surface of the mass block 103 extends axially along the inner tube 101 to form a raised portion 109 . For the mass block 103 of the same mass, in order to reduce its radial size, its axial size can be appropriately extended. This design makes the overall structure of the column resonator 100 more compact, and is suitable for flexible arrangement according to the space requirements in the vehicle.

Preferably, the rubber body 104 is provided with grooves 110 on both sides in the axial direction of the inner tube 101 for adjusting the axial and radial fixed frequency ratio.

Preferably, the column resonator 100 also includes bolts (not shown), which penetrate into the inner tube 101 and are threaded and fixed with the inner tube 101 . The column resonator 100 can be detachably assembled to various parts of the vehicle through bolts, such as the position of the suspension frame, and is used to absorb the vibration energy generated at the position during the driving of the vehicle.

The utility model provides a column resonator that effectively controls the displacement of the mass block and the compression amount of the rubber body through the first gap and the second gap, and controls the displacement amount without affecting the vibration absorption of the overall column resonator. It effectively solves the problems of rubber tearing and aging that are prone to occur during long-term use of the rubber body, and improves the service life of the overall column resonator.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (10)

1. A column resonator, suitable for vehicles, characterized by including: Inner tube, a limit plate is provided at one end of the inner tube; An outer tube, arranged outside the inner tube and coaxial with the inner tube; The mass block is in the shape of a hollow cone, and the outer tube is press-fitted into the mass block through an interference fit; a rubber body arranged between the inner tube and the outer tube; A first gap is formed between the bottom surface of the mass block and the limiting plate. 2. The column resonator according to claim 1, wherein an anti-collision pad is provided on the bottom surface of the mass block. 3. The column resonator according to claim 1 or 2, wherein the width of the first gap is greater than 2 mm and less than 5 mm. 4. The column resonator of claim 1, wherein a second gap is formed between the top of the mass and the inner tube. 5. The column resonator according to claim 4, wherein the width of the second gap is greater than 2 mm and less than 5 mm. 6. The column resonator of claim 1, wherein the rubber body is vulcanized between the inner tube and the outer tube. 7. The column resonator according to claim 2, wherein the anti-collision pad is annular and is riveted and fixed to one end of the inner tube. 8. The column resonator according to claim 1, wherein the outer edge of the bottom surface of the mass block extends axially along the inner tube to form a convex portion. 9. The column resonator according to claim 1, wherein the rubber body is provided with grooves on both sides along the axial direction of the inner tube. 10. The column resonator according to claim 1, further comprising bolts that penetrate into the inner tube and are threadedly matched and fixed with the inner tube.