Vibration isolation assembly, air supply unit and vehicle

Abstract

The vibration isolation assembly comprises a secondary suspension support and a secondary suspension, the secondary suspension support can extend into a connecting face which is arranged on the secondary suspension and matched with the secondary suspension support, a first limiting part is arranged on the secondary suspension, and a second limiting part is arranged on the second limiting part. And a second limiting part which is matched with the first limiting part and prevents the first limiting part from being separated from the connecting surface is arranged on the secondary suspension bracket. According to the utility model, through the arrangement of the first limiting part and the second limiting part, limiting can be formed, and the secondary suspension bracket is prevented from being separated from the connecting surface of the secondary suspension, so that the stability of the connection between the secondary suspension bracket and the secondary suspension is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air spring vibration isolation components, and more specifically to a vibration isolation component, an air supply unit and a vehicle. Background Art

[0002] Modern chassis technology, along with the revolution of chassis technology, air suspension has been accepted by major OEMs for its superior comfort. The air supply unit, hereinafter referred to as ASU, as the source of gas in the entire system, plays a vital role in the operation of the entire air suspension. For the development of ASU, many aspects of input need to be considered, the most important of which is the vibration isolation and layout of ASU. The vibration from ASU includes the vibration of the pump body itself generated by the motor driving the compressor to work during the pumping process, and also includes the vibration caused by the vertical jumping of the pump body when encountering a large excitation from the road surface. As for the layout, due to different OEMs and different vehicle platforms, the space positions reserved for ASU are different, which also leads to relatively complex space layout during the development process.

[0003] Currently, if Figure 1 As shown in the figure, the load-bearing and vibration isolation directions of the mainstream secondary and primary suspensions on the market are the same as the axial direction of the suspension. The ASU system needs to be hard-connected with the body and frame, and a suspension bracket needs to be inserted in the secondary mount to ensure a stable connection between the ASU and the body.

[0004] In this case, due to the different hardness and surface roughness of different suspensions, there is a risk that the stent will fall off after being inserted into the secondary suspension. Currently, there are several mainstream ways to deal with this risk in the market:

[0005] (1) Improving the stiffness of the suspension and increasing the internal friction can effectively prevent the suspension bracket from falling off, but it will greatly limit the stiffness range of the suspension, making it difficult to adjust the entire system and affecting the performance of the entire ASU;

[0006] (2) Adding bumps inside the suspension to increase internal friction and prevent falling off better, but during the installation and insertion process, the resistance also increases, making the installation of the equipment and manual installation more difficult;

[0007] (3) Apply glue inside the suspension. This method can effectively prevent it from falling off, but the glue will affect the elasticity and mechanical properties of the rubber and shorten the service life of the suspension. Utility Model Content

[0008] The technical problem to be solved by the utility model is how to improve the stability of the connection between the bracket and the secondary suspension.

[0009] The present utility model achieves the solution to the above technical problems through the following technical means: A vibration isolation component includes a secondary suspension bracket and a secondary suspension. The secondary suspension bracket can extend into a connection surface formed on the secondary suspension and adapted to the secondary suspension bracket. A first limiting portion is provided on the secondary suspension, and a second limiting portion is provided on the secondary suspension bracket and cooperates with the first limiting portion to prevent it from disengaging from the connection surface.

[0010] Through the arrangement of the first limiting portion and the second limiting portion, a limit can be formed to prevent the secondary suspension bracket from disengaging from the connection surface of the secondary suspension, thereby improving the connection stability between the secondary suspension bracket and the secondary suspension.

[0011] As a preferred technical solution, the first limiting portion includes at least one anti-disengagement block inclined with respect to the connection surface, and the second limiting portion includes an anti-disengagement groove adapted to the anti-disengagement block, and the anti-disengagement block can enter the anti-disengagement groove.

[0012] As a preferred technical solution, a through hole is provided in the secondary suspension, the inner wall of the through hole forms the connection surface, and secondary suspension brackets are connected to both the top and bottom of the through hole.

[0013] As a preferred technical solution, the first limiting portion is arranged in a ring shape, and the second limiting portion is arranged in a ring shape.

[0014] As a preferred technical solution, the anti-disengagement block includes an upper anti-disengagement block and a lower anti-disengagement block, and the upper anti-disengagement block and the lower anti-disengagement block are arranged oppositely.

[0015] As a preferred technical solution, the distance between the upper anti-disengagement block and the midline of the secondary suspension in its height direction is greater than the distance between the lower anti-disengagement block and the midline of the secondary suspension in its height direction.

[0016] As a preferred technical solution, the secondary suspension is an injection molded part, and the angle between the first limiting portion and the connection surface is an acute angle.

[0017] As a preferred technical solution, the first limiting portion is arranged in a barbed shape.

[0018] An air supply unit includes the above vibration isolation component.

[0019] A vehicle includes the above air supply unit.

[0020] The beneficial effects of the present utility model are as follows:

[0021] (1) In the present utility model, through the arrangement of the first limiting portion and the second limiting portion, a limit can be formed to prevent the secondary suspension bracket from disengaging from the connection surface of the secondary suspension, thereby improving the connection stability between the secondary suspension bracket and the secondary suspension.

[0022] (2) In the present utility model, through the setting of the barbed structure, the connection effect between the anti - detachment block and the anti - detachment groove is improved. The angle between the anti - detachment block and the connection surface is set as an acute angle, and the anti - detachment block is made of plastic material. When the secondary suspension bracket extends into the secondary suspension, it can allow the secondary suspension bracket to enter. After the anti - detachment block is stuck into the anti - detachment groove, the friction force between the inner wall of the secondary suspension and the secondary suspension bracket will be increased to a great extent, preventing the bracket from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the secondary suspension bracket provided for the background technology of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the secondary suspension provided for the embodiment of the present utility model;

[0025] Figure 3 is a schematic cross - sectional structural diagram of the secondary suspension A - A provided for the embodiment of the present utility model;

[0026] Figure 4 is provided for the embodiment of the present utility model Figure 3 schematic diagram of the enlarged partial structure of B;

[0027] Figure 5 is a schematic structural diagram of the vibration isolation component provided for the embodiment of the present utility model;

[0028] Figure 6 is a schematic cross - sectional structural diagram of the vibration isolation component C - C provided for the embodiment of the present utility model;

[0029] Figure 7 is provided for the embodiment of the present utility model Figure 6 schematic diagram of the enlarged partial structure of D;

[0030] Reference numerals in the drawings: 1. Secondary suspension bracket; 2. Secondary suspension; 3. Anti - detachment block; 31. Upper anti - detachment block; 32. Lower anti - detachment block; 4. Anti - detachment groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figure 1A vibration isolation component includes a secondary suspension bracket 1 and a secondary suspension 2. The secondary suspension bracket 1 can extend into a connection surface on the secondary suspension 2 and is adapted to the secondary suspension bracket 1. The secondary suspension 2 is provided with a first limiting portion. The secondary suspension bracket 1 is provided with a second limiting portion that cooperates with the first limiting portion and prevents it from escaping from the connection surface. The first limiting portion is arranged in a barb shape, wherein the secondary suspension bracket 1 is a stamping part and the secondary suspension 2 is an injection molded part.

[0033] See also Figure 5 , Figure 7 A through hole is provided at the center of the secondary suspension 2, the inner wall of the through hole forms a connecting surface, the top and bottom of the through hole are connected to a secondary suspension bracket 1, the first limiting portion includes at least one anti-dropping block 3 arranged obliquely with the connecting surface, the second limiting portion includes an anti-dropping groove 4 adapted to the anti-dropping block 3, and the anti-dropping block 3 can enter the anti-dropping groove 4, see Figure 2 , Figure 3 In this embodiment, four anti-dropping blocks 3 are taken as an example, which are two upper anti-dropping blocks 31 and a lower anti-dropping block 32. The upper anti-dropping blocks 31 and the lower anti-dropping blocks 32 are arranged opposite to each other, and the distance between the upper anti-dropping block 31 and the midline of the secondary suspension 2 along its height direction is greater than the distance between the lower anti-dropping block 32 and the midline of the secondary suspension 2 along its height direction.

[0034] See also Figure 4 The angle between the upper anti-slip block 31 and the connecting surface of the bracket is an acute angle. In this embodiment, 55 degrees is taken as an example, and it can also be 30 degrees, 45 degrees, 60 degrees, etc., but is not limited to this; the anti-slip block 3 is an annular structure, and the anti-slip groove 4 is an annular structure. In this embodiment, two or more upper anti-slip blocks 31 generally form a fish scale structure. It should be noted that a depression is also provided on the outside of the connection between the anti-slip block 31 and the connecting surface, and the depression is adapted to the convex shape formed after the anti-slip groove 1 is opened on the secondary suspension bracket 1. When the anti-slip block 3 is inserted into the anti-slip groove 4, the depression is against the convexity.

[0035] How to use: Place the secondary suspension 2 during the injection molding process. Figure 2 It is manufactured in the style shown in , and during the assembly process of the secondary suspension 2, the bracket 1 is inserted into the inner cavity of the secondary suspension 2, i.e., the connecting surface, along the inner wall. At this time, the anti-dropout block 3 in the inner cavity will be immersed in the anti-dropout groove 4 injected at the lower end, so that the secondary suspension bracket 1 can be inserted downward more smoothly; after the secondary suspension bracket 1 is installed, if the secondary suspension bracket 1 has a tendency to fall out, the barbed structure will greatly increase the friction between the inner wall and the bracket to prevent the secondary suspension bracket 1 from falling off.

[0036] In this embodiment, an air supply unit including a vibration isolation assembly and a vehicle including the air supply unit are also provided.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration isolation assembly, comprising a secondary suspension bracket and a secondary suspension, characterized in that: The secondary suspension bracket can extend into a connection surface opened on the secondary suspension and adapted to the secondary suspension bracket. The secondary suspension is provided with a first limiting portion, and the secondary suspension bracket is provided with a second limiting portion cooperating with the first limiting portion and preventing it from escaping from the connection surface.

2. A vibration isolation assembly according to claim 1, characterized in that: The first limiting portion includes at least one anti-dropping block arranged obliquely with respect to the connecting surface, and the second limiting portion includes an anti-dropping groove matched with the anti-dropping block, and the anti-dropping block can enter the anti-dropping groove.

3. A vibration isolation assembly according to claim 1, characterized in that: A through hole is provided in the secondary suspension, the inner wall of the through hole forms the connecting surface, and the top and the bottom of the through hole are both connected to the secondary suspension bracket.

4. A vibration isolation assembly according to claim 1, characterized in that: The first limiting portion is arranged in a ring shape, and the second limiting portion is arranged in a ring shape.

5. A vibration isolation assembly according to claim 2, characterized in that: The anti-slipping block comprises an upper anti-slipping block and a lower anti-slipping block, and the upper anti-slipping block and the lower anti-slipping block are arranged opposite to each other.

6. A vibration isolation assembly according to claim 5, characterized in that: The distance between the upper anti-slip block and the midline of the secondary suspension along the height direction thereof is greater than the distance between the lower anti-slip block and the midline of the secondary suspension along the height direction thereof.

7. A vibration isolation assembly according to claim 1, characterized in that: The secondary suspension is an injection molded part, and the angle between the first limiting portion and the connecting surface is an acute angle.

8. A vibration isolation assembly according to claim 1, characterized in that: The first limiting portion is arranged in a barb shape.

9. An air supply unit, characterized in that: The vibration isolation assembly comprises the vibration isolation assembly according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the air supply unit of claim 9.

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