Vibration isolation suspension and vehicle

Abstract

The utility model provides a vibration isolation suspension and a vehicle, the vibration isolation suspension comprises: an outer pipe, the outer pipe can be in interference fit with a hole to be assembled; the first-stage separation pipe is arranged in the outer pipe in a penetrating manner; the second-stage separation pipe is arranged in the first-stage separation pipe in a penetrating manner; the double-layer vibration isolation main spring comprises a first vibration isolation part and a second vibration isolation part, the first vibration isolation part is filled between the outer pipe and the first-stage separation pipe, and the second vibration isolation part is filled between the first-stage separation pipe and the second-stage separation pipe; and the inner core is arranged in the second-stage separation pipe in a penetrating manner and is in interference fit with the second-stage separation pipe. Through the technical scheme provided by the invention, the problem that a vibration isolation suspension in the related technology cannot meet the fatigue durability while having relatively low high-frequency dynamic stiffness can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and more specifically, to a vibration isolation mount and a vehicle. Background Art

[0002] With the development of automotive manufacturing technology, the comfort of automobiles has become an important indicator that consumers care about when purchasing a vehicle. The vibration isolation mount for a vehicle is an important part of automotive comfort design. The main function of the vibration isolation mount is to support the engine or motor, buffer the vibration of the engine or motor, and improve the ride comfort of the vehicle. In the vibration isolation mount, the vibration isolation main spring installed inside the vibration isolation mount is used to isolate the vibration of the engine or motor.

[0003] In the related art, a rubber mount is used to connect the motor and the subframe in an electric vehicle and reduce the vibration transmission between the motor and the subframe. Since the motor used in the electric vehicle rotates at a high speed, the excitation frequency generated often exceeds 1000 Hz. Therefore, a rubber mount with a secondary vibration isolation feature having a cross rib is added. The rubber mount with this secondary vibration isolation feature has a lower high-frequency dynamic stiffness than the traditional rubber mount in this high-frequency band, enabling it to maintain a good vibration isolation effect in the high-frequency band to solve the series of whistling problems that occur in the high-frequency band.

[0004] However, the fatigue durability performance of the rubber mount with this secondary vibration isolation feature is reduced compared to that of the traditional rubber mount. Summary of the Utility Model

[0005] The utility model provides a vibration isolation mount and a vehicle to solve the problem that the vibration isolation mount in the related art cannot meet the fatigue durability performance while having a lower high-frequency dynamic stiffness.

[0006] According to one aspect of the utility model, a vibration isolation mount is provided. The vibration isolation mount includes: an outer tube that can be in interference fit with a hole to be assembled; a primary separation tube that is inserted through the outer tube; a secondary separation tube that is inserted through the primary separation tube; a double-layer vibration isolation main spring including a first vibration isolation portion and a second vibration isolation portion, where the first vibration isolation portion is filled between the outer tube and the primary separation tube, and the second vibration isolation portion is filled between the primary separation tube and the secondary separation tube; and an inner core that is inserted through the secondary separation tube and is in interference fit with the secondary separation tube.

[0007] Further, the first vibration isolation portion includes: a first vibration isolation cylinder whose outer wall is in contact with the inner wall of the outer tube; a second vibration isolation cylinder whose inner wall is in contact with the outer wall of the primary separation tube; and a plurality of first vibration isolation ribs that are arranged at intervals along the circumferential direction of the outer tube, with one end of each first vibration isolation rib connected to the inner wall of the first vibration isolation cylinder and the other end connected to the outer wall of the second vibration isolation cylinder.

[0008] Further, the first vibration isolation part further includes a radial limiting block located between two adjacent first vibration isolation ribs. One end of the radial limiting block is disposed on one of the inner wall of the first vibration isolation cylinder and the outer wall of the second vibration isolation cylinder, and there is a gap between the other end of the radial limiting block and the other of the inner wall of the first vibration isolation cylinder and the outer wall of the second vibration isolation cylinder.

[0009] Further, the first vibration isolation part includes a plurality of radial limiting blocks, and one radial limiting block is disposed between two adjacent first vibration isolation ribs of the plurality of first vibration isolation ribs.

[0010] Further, the radial limiting block is an isosceles trapezoid structure. The lower base of the isosceles trapezoid structure is connected to the inner wall of the first vibration isolation cylinder, and there is a gap between the upper base of the isosceles trapezoid structure and the outer wall of the second vibration isolation cylinder.

[0011] Further, the included angle between the two hypotenuses of the isosceles trapezoid structure is between 50° and 70°; and / or, the gap is between 5 mm and 6 mm.

[0012] Further, the second vibration isolation part includes: a third vibration isolation cylinder, whose outer wall is fitted to the inner wall of the primary separation pipe; a fourth vibration isolation cylinder, whose inner wall is fitted to the outer wall of the secondary separation pipe; and a plurality of second vibration isolation ribs, which are arranged at intervals along the circumferential direction of the primary separation pipe. One end of the second vibration isolation rib is connected to the inner wall of the third vibration isolation cylinder, and the other end of the second vibration isolation rib is connected to the outer wall of the fourth vibration isolation cylinder.

[0013] Further, a strip-shaped groove is provided on the inner wall of the fourth vibration isolation cylinder, and the strip-shaped groove extends along the axial direction of the fourth vibration isolation cylinder. A strip-shaped boss is provided on the outer wall of the secondary separation pipe, and the strip-shaped boss extends along the axial direction of the secondary separation pipe. The strip-shaped boss extends into the strip-shaped groove; and / or, the inner hole of the fourth vibration isolation cylinder is a non-circular structure, and the outer shape of the secondary separation pipe is adapted to the hole shape of the inner hole of the fourth vibration isolation cylinder.

[0014] Further, the material of the double-layer vibration isolation main spring is vulcanized rubber; and / or, the materials of the outer pipe, the primary separation pipe, the secondary separation pipe, and the inner core can all be steel, aluminum, or resin fiber.

[0015] Further, the mass of the primary separation pipe is between 30 g and 500 g.

[0016] According to another aspect of the present invention, a vehicle is provided. The vehicle includes: a vehicle body having an assembly hole to be assembled; a vibration isolation mount, the outer pipe of the vibration isolation mount is press-fitted through the assembly hole to be assembled, and the vibration isolation mount is the vibration isolation mount provided above.

[0017] Applying the technical solution of the present utility model, the vibration isolation mount includes an outer tube, a primary separation tube, a secondary separation tube, and a double-layer vibration isolation main spring. The primary separation tube is disposed through the outer tube, and the secondary separation tube is disposed through the primary separation tube. The first vibration isolation part of the double-layer vibration isolation main spring is filled between the outer tube and the primary separation tube, and the second vibration isolation part of the double-layer vibration isolation main spring is filled between the primary separation tube and the secondary separation tube. Since the outer tube can be in interference fit with the hole to be assembled, and the inner core is disposed through the secondary separation tube and in interference fit with the secondary separation tube, the double-layer vibration isolation main spring can be changed from a stretched state to a compressed state, thereby improving the fatigue performance. In summary, the present application makes a new design for the main spring structure inside the vibration isolation mount, iterates the ordinary single-layer main spring to an inner and outer double-layer main spring, and through the interference fit with the inner core, the vibration isolation mount with the new structure has a lower stiffness in the high-frequency band without sacrificing the fatigue durability performance. Therefore, the vibration isolation mount can meet the fatigue durability performance while having a lower high-frequency dynamic stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 shows a schematic structural diagram of a vibration isolation mount provided according to an embodiment of the present utility model;

[0020] Figure 2 shows an exploded view of a vibration isolation mount provided according to an embodiment of the present utility model;

[0021] Figure 3 shows a partially enlarged view of a vibration isolation mount provided according to an embodiment of the present utility model;

[0022] Figure 4 shows Figure 1 a schematic structural diagram of the outer tube in

[0023] Figure 5 shows Figure 1 a schematic structural diagram of the primary separation tube in

[0024] Figure 6 shows Figure 1 a schematic structural diagram of the double-layer vibration isolation main spring in

[0025] Figure 7 shows Figure 1 a schematic structural diagram of the secondary separation tube in

[0026] Figure 8 shows Figure 1 a schematic structural diagram of the inner core in

[0027] Figure 9 Shows an assembly drawing of the vibration isolation mount and the vehicle body provided according to an embodiment of the present invention;

[0028] Figure 10 Shows an assembled drawing of the vibration isolation mount and the vehicle body provided according to an embodiment of the present invention;

[0029] Figure 11 Shows Figure 10 A cross-sectional view at position F in

[0030] Figure 12 Shows a schematic diagram of the dynamic stiffness of a traditional single-layer vibration isolation structure rubber mount;

[0031] Figure 13 Shows a schematic diagram of the dynamic stiffness of the vibration isolation mount under different primary separation tube masses provided according to an embodiment of the present invention;

[0032] Figure 14 Shows a comparison diagram of the dynamic stiffness performance between the vibration isolation mount provided according to an embodiment of the present invention and a traditional single-layer vibration isolation structure rubber mount;

[0033] Figure 15 Shows a schematic diagram of the principle comparison between the vibration isolation mount provided according to an embodiment of the present invention and a traditional single-layer vibration isolation structure rubber mount.

[0034] Among them, the above-mentioned drawings include the following reference numerals:

[0035] 10. Outer tube;

[0036] 20. Primary separation tube;

[0037] 30. Secondary separation tube; 31. Strip-shaped boss;

[0038] 40. Double-layer vibration isolation main spring; 41. First vibration isolation part; 411. First vibration isolation cylinder; 412. Second vibration isolation cylinder; 413. First vibration isolation rib; 414. Radial limit block; 42. Second vibration isolation part; 421. Third vibration isolation cylinder; 422. Fourth vibration isolation cylinder; 4221. Strip-shaped groove; 423. Second vibration isolation rib;

[0039] 50. Inner core;

[0040] 60. Vehicle body; 61. Assembly hole to be assembled;

[0041] A. Angle between two hypotenuses of the isosceles trapezoid structure;

[0042] D. Interval between the radial limit block and the outer wall of the second vibration isolation cylinder;

[0043] X1. Primary interference fit dimension; X2. Secondary interference fit dimension. Detailed implementation manner

[0044] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0045] As Figures 1 to 11 shown, the embodiment of the present invention provides a vibration isolation mount. The vibration isolation mount includes an outer tube 10, a first-stage separation tube 20, a second-stage separation tube 30, a double-layer vibration isolation main spring 40, and an inner core 50. The outer tube 10 can be in interference fit with the to-be-assembled hole 61. The first-stage separation tube 20 is disposed through the outer tube 10, the second-stage separation tube 30 is disposed through the first-stage separation tube 20. The double-layer vibration isolation main spring 40 includes a first vibration isolation portion 41 and a second vibration isolation portion 42. The first vibration isolation portion 41 is filled between the outer tube 10 and the first-stage separation tube 20, the second vibration isolation portion 42 is filled between the first-stage separation tube 20 and the second-stage separation tube 30. The inner core 50 is disposed through the second-stage separation tube 30 and is in interference fit with the second-stage separation tube 30.

[0046] Applying the vibration isolation mount provided in this embodiment, since the outer tube 10 can be in interference fit with the to-be-assembled hole 61, and the inner core 50 is disposed through the second-stage separation tube 30 and is in interference fit with the second-stage separation tube 30, the double-layer vibration isolation main spring 40 can be changed from a tensile state to a compressed state, improving the fatigue performance. In summary, this application makes a new design for the main spring structure inside the vibration isolation mount, iterates the ordinary single-layer main spring to an inner and outer double-layer main spring, and through the interference fit with the inner core 50, the vibration isolation mount with a new structure has a lower stiffness in the high-frequency band without sacrificing the fatigue durability performance. Therefore, the vibration isolation mount can not only solve the NVH problem caused by stiffness in the full frequency band of electric vehicles, but also improve the fatigue reliability. The vibration isolation mount can achieve high-frequency low stiffness and excellent fatigue characteristics through a special structure. This structure has a significant effect on optimizing the high-frequency motor squeal problem occurring after 1000 Hz.

[0047] Among them, the outer tube 10 can be in interference fit with the to-be-assembled hole 61, which means that by interference fitting and pressing into the mating part such as the subframe provided with the to-be-assembled hole 61, the internal stress of the first vibration isolation portion 41 on the outer layer of the assembly is changed from a tensile state to a compressed state (primary interference). The inner core 50 is disposed through the second-stage separation tube 30 and is in interference fit with the second-stage separation tube 30, which means that after the inner core 50 is inserted, the internal stress of the second vibration isolation portion 42 is changed from a tensile state to a compressed state (secondary interference).

[0048] Specifically, by setting the first interference fit dimension X1 to 2 mm and the second interference fit dimension X2 to 1.5 mm, the durability performance of the vibration isolation mount provided in this embodiment is improved by approximately 10%.

[0049] As Figure 1 and Figure 6 shown, the first vibration isolation part 41 includes a first vibration isolation cylinder 411, a second vibration isolation cylinder 412, and a plurality of first vibration isolation ribs 413. The outer wall of the first vibration isolation cylinder 411 is attached to the inner wall of the outer tube 10, the inner wall of the second vibration isolation cylinder 412 is attached to the outer wall of the first-stage separation tube 20, the plurality of first vibration isolation ribs 413 are arranged at intervals along the circumferential direction of the outer tube 10, one end of the first vibration isolation rib 413 is connected to the inner wall of the first vibration isolation cylinder 411, and the other end of the first vibration isolation rib 413 is connected to the outer wall of the second vibration isolation cylinder 412. With this structure, the first vibration isolation part 41 can better absorb vibrations.

[0050] Among them, the first vibration isolation part 41 further includes a radial limiting block 414 located between two adjacent first vibration isolation ribs 413. One end of the radial limiting block 414 is arranged on one of the inner wall of the first vibration isolation cylinder 411 and the outer wall of the second vibration isolation cylinder 412, and there is a gap between the other end of the radial limiting block 414 and the other of the inner wall of the first vibration isolation cylinder 411 and the outer wall of the second vibration isolation cylinder 412. The setting of the radial limiting block 414 can prevent the vibration isolation main spring from undergoing excessive deformation under large-amplitude vibrations, ensuring the stability and safety of the vehicle under extreme working conditions.

[0051] It should be noted that during the rapid acceleration and deceleration of the electric vehicle, if a traditional cross-rib type secondary vibration isolation main spring is used, the motor movement displacement is too large, and the inner core and the outer core are in direct contact, resulting in noise and vibration being directly transmitted from the power assembly to the vehicle body, causing great complaints from users. The radial limiting block 414 designed in the vibration isolation mount of this embodiment can solve this problem.

[0052] In this embodiment, one end of the radial limiting block 414 is arranged on the inner wall of the first vibration isolation cylinder 411, and there is a gap D between the other end of the radial limiting block 414 and the outer wall of the second vibration isolation cylinder 412.

[0053] Among them, the first vibration isolation part 41 includes a plurality of radial limiting blocks 414, and one radial limiting block 414 is arranged between two adjacent first vibration isolation ribs 413 of the plurality of first vibration isolation ribs 413. This evenly distributed limiting block design makes the vibration isolation performance more balanced, for example, suitable for vibration isolation when the vehicle is driving on an uneven road surface.

[0054] As Figure 3As shown, the radial limiting block 414 has an isosceles trapezoid structure. The lower base of the isosceles trapezoid structure is connected to the inner wall of the first vibration isolation cylinder 411, and there is a gap D between the upper base of the isosceles trapezoid structure and the outer wall of the second vibration isolation cylinder 412. The design of the limiting block with an isosceles trapezoid structure not only increases the structural stability but also can effectively disperse the vibration energy and improve the vibration isolation effect.

[0055] Among them, the included angle A between the two hypotenuses of the isosceles trapezoid structure is between 50° and 70°, and the gap D is between 5 mm and 6 mm. This specific geometric parameter design can optimize the vibration isolation performance, be suitable for vibration isolation at different frequencies, and ensure the comfort and stability of the vehicle under various driving conditions.

[0056] Specifically, the included angle A between the two hypotenuses of the isosceles trapezoid structure can be 50°, 60°, 70°, or any other value between 50° and 70°. The gap D can be 5 mm, 5.5 mm, 6 mm, or any other value between 5 mm and 6 mm.

[0057] It should be noted that the gap D and the included angle A of the radial limiting block can be adjusted to meet the requirements of motors with different masses and different maximum output torques.

[0058] As Figure 1 and Figure 6 shown, the second vibration isolation part 42 includes a third vibration isolation cylinder 421, a fourth vibration isolation cylinder 422, and a plurality of second vibration isolation ribs 423. The outer wall of the third vibration isolation cylinder 421 is in contact with the inner wall of the primary separation pipe 20, the inner wall of the fourth vibration isolation cylinder 422 is in contact with the outer wall of the secondary separation pipe 30, and the plurality of second vibration isolation ribs 423 are arranged at intervals along the circumferential direction of the primary separation pipe 20. One end of the second vibration isolation rib 423 is connected to the inner wall of the third vibration isolation cylinder 421, and the other end of the second vibration isolation rib 423 is connected to the outer wall of the fourth vibration isolation cylinder 422. The design of the second vibration isolation part 42 can effectively absorb vibration.

[0059] As Figure 6 and Figure 7 shown, a strip-shaped groove 4221 is provided on the inner wall of the fourth vibration isolation cylinder 422. The strip-shaped groove 4221 extends along the axial direction of the fourth vibration isolation cylinder 422. A strip-shaped boss 31 is provided on the outer wall of the secondary separation pipe 30. The strip-shaped boss 31 extends along the axial direction of the secondary separation pipe 30, and the strip-shaped boss 31 extends into the strip-shaped groove 4221. The inner hole of the fourth vibration isolation cylinder 422 has a non-circular structure, and the outer shape of the secondary separation pipe 30 is adapted to the hole shape of the inner hole of the fourth vibration isolation cylinder 422. This structure can ensure the stable connection between the secondary separation pipe 30 and the fourth vibration isolation cylinder 422 and prevent relative movement during vibration.

[0060] In this embodiment, the inner hole of the fourth vibration isolation cylinder 422 has a square hole structure.

[0061] In this embodiment, the double-layer vibration isolation main spring 40 is made of vulcanized rubber. As the material of the vibration isolation main spring, vulcanized rubber can provide excellent vibration isolation performance.

[0062] It should be noted that the formation process of the double-layer vibration isolation main spring 40 in this embodiment is to put the outer tube, the first-level separation tube, and the second-level separation tube into a vulcanization mold, vulcanize the liquid rubber into the mold through a vulcanizer, and form the above-mentioned double-layer vibration isolation main spring after the rubber is cooled and vulcanized into a solid state. In the process of rubber cooling and vulcanization, due to the corresponding thermal expansion and contraction of the rubber, the rubber shrinks after it becomes solid. In the above structure, it is manifested that the rubber in the outer tube and the first-level separation tube shrinks toward the middle, and the rubber in the first-level separation tube and the second-level separation tube shrinks toward the middle, so that the connection between the rubber and the outer tube, the first-level separation tube, and the second-level separation tube is in a state of tension. However, since the outer tube 10 can be interference-fitted with the assembly hole 61, the inner core 50 is inserted into the second-level separation tube 30 and is interference-fitted with the second-level separation tube 30, so that the double-layer vibration isolation main spring 40 can be changed from a tensile state to a compressed state, thereby improving fatigue performance.

[0063] The outer tube 10, the primary separation tube 20, the secondary separation tube 30 and the inner core 50 can all be made of steel, aluminum or resin fiber. The use of materials such as steel, aluminum or resin fiber can ensure the structural strength and lightness of the entire vibration isolation suspension, and is suitable for racing cars or new energy vehicles that pursue high performance and low weight.

[0064] It should be noted that the dynamic stiffness of the traditional single-layer vibration isolation structure rubber suspension is Figure 12 As shown, it can be seen that the traditional single-layer vibration isolation structure rubber suspension generally has the characteristic of high-frequency dynamic stiffness hardening, that is, the dynamic stiffness of the rubber increases significantly in the high-frequency area. If it is applied to electric vehicles, it will cause motor howling problems in the high-frequency band. The vibration isolation suspension provided in this embodiment is optimized to reduce the dynamic stiffness in the high-frequency band and improve fatigue reliability.

[0065] Specifically, the primary separation tube 20 is formed by extrusion or other processing technology, and plays the role of adding mass and separating rubber in the assembly. By controlling its different masses, the peak value and peak frequency band of the rubber dynamic stiffness can be adjusted, such as Figure 13 As shown, the mass of the first-stage separation tube is reduced from three times to one third, the dynamic stiffness peak is reduced, and the peak frequency point is reduced to achieve frequency avoidance of the entire vehicle, thereby staggering the rubber dynamic stiffness frequency and the main excitation frequency of the motor, reducing the rubber dynamic stiffness, and thereby reducing the risk of high-frequency howling.

[0066] In this embodiment, the dynamic stiffness curve of the novel vibration isolation mount is as follows: Figure 14As shown, it can be seen that the dynamic stiffness value of the vibration isolation mount in the high-frequency region after 800 Hz is significantly lower than that of the traditional rubber mount. Therefore, the vibration isolation mount provided in this embodiment can change the mass property of the primary separation tube, stagger the frequency of the rubber dynamic stiffness and the motor excitation frequency, reduce the rubber dynamic stiffness in the high-frequency region, and further reduce the risk of high-frequency whistling.

[0067] Among them, the mass of the primary separation tube 20 is between 30 g and 500 g. Specifically, the mass of the primary separation tube 20 can be 30 g, 100 g, 200 g, 300 g, 400 g, 500 g, and any other value between 30 g and 500 g.

[0068] In the related art, during the development of the electric vehicle powertrain mount, mounts with a lower dynamic-to-static stiffness ratio are usually selected to optimize the NVH problems of the vehicle. However, reducing the stiffness will sacrifice the durability of the rubber, resulting in rubber cracking problems within the specified vehicle life. In addition, traditional rubber mounts will generate a very high dynamic stiffness under the working conditions of high frequency and small amplitude, resulting in insufficient vibration isolation rate and bringing NVH problems such as steering wheel vibration and seat rail vibration. For electric vehicles with an increasingly high excitation frequency, this problem is particularly prominent. The vibration isolation mount provided in this embodiment can break through the contradiction between the stiffness and durability of traditional rubber mounts.

[0069] Another embodiment of the present invention provides a vehicle, which includes a vehicle body 60 and a vibration isolation mount. The vehicle body 60 has an assembly hole 61 to be assembled, and the outer tube 10 of the vibration isolation mount is press-fitted through the assembly hole 61 to be assembled. The vibration isolation mount is the vibration isolation mount provided above. Therefore, this vehicle can also solve the NVH problems caused by stiffness in the full frequency band of electric vehicles and improve fatigue reliability.

[0070] It should be noted that Figure 15 As shown in the analysis of the load-bearing situation of the double-layer vibration isolation main spring 40, the excitation of the powertrain is first transmitted to the inner core through the bolt connecting the motor and the inner core, then transmitted to the primary separation tube after being isolated by the second vibration isolation part of the inner layer, and then transmitted to the outer tube after being isolated by the first vibration isolation part of the outer layer, achieving a two-stage vibration isolation effect.

[0071] The device provided by the embodiment has the following beneficial effects:

[0072] (1) Since the outer tube 10 can be press-fitted with the assembly hole 61 to be assembled, and the inner core 50 is inserted into the secondary separation tube 30 and press-fitted with the secondary separation tube 30, the double-layer vibration isolation main spring 40 can be changed from a tensile state to a compressed state, improving fatigue performance;

[0073] (2) By optimizing the mass of the primary separation tube 20, the problem of stiffness peaks in the low-frequency band can be solved.

[0074] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further discussion in subsequent drawings.

[0076] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0077] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0078] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0079] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vibration isolation mount, characterized in that, The vibration isolation mount includes: An outer tube (10) that can be in interference fit with the hole to be assembled (61); A primary separation tube (20) that is inserted into the outer tube (10); A secondary separation tube (30) that is inserted into the primary separation tube (20); A double-layer vibration isolation main spring (40) that includes a first vibration isolation part (41) and a second vibration isolation part (42). The first vibration isolation part (41) is filled between the outer tube (10) and the primary separation tube (20), and the second vibration isolation part (42) is filled between the primary separation tube (20) and the secondary separation tube (30); An inner core (50) that is inserted into the secondary separation tube (30) and is in interference fit with the secondary separation tube (30).

2. The vibration isolation mount according to claim 1, wherein The first vibration isolation part (41) includes: A first vibration isolation cylinder (411) whose outer wall is in contact with the inner wall of the outer tube (10); A second vibration isolation cylinder (412) whose inner wall is in contact with the outer wall of the primary separation tube (20); A plurality of first vibration isolation ribs (413) that are arranged at intervals along the circumferential direction of the outer tube (10). One end of the first vibration isolation rib (413) is connected to the inner wall of the first vibration isolation cylinder (411), and the other end of the first vibration isolation rib (413) is connected to the outer wall of the second vibration isolation cylinder (412).

3. The vibration isolation mount according to claim 2, wherein, The first vibration isolation part (41) further includes a radial limiting block (414) located between two adjacent first vibration isolation ribs (413). One end of the radial limiting block (414) is provided on one of the inner wall of the first vibration isolation cylinder (411) and the outer wall of the second vibration isolation cylinder (412), and there is a gap between the other end of the radial limiting block (414) and the other of the inner wall of the first vibration isolation cylinder (411) and the outer wall of the second vibration isolation cylinder (412).

4. The vibration isolation mount according to claim 3, characterized in that, The first vibration isolation part (41) includes a plurality of the radial limiting blocks (414), and one radial limiting block (414) is provided between two adjacent first vibration isolation ribs (413) of the plurality of first vibration isolation ribs (413).

5. The vibration isolation mount according to claim 3, wherein The radial limiting block (414) is an isosceles trapezoid structure. The lower base of the isosceles trapezoid structure is connected to the inner wall of the first vibration isolation cylinder (411), and there is the gap between the upper base of the isosceles trapezoid structure and the outer wall of the second vibration isolation cylinder (412).

6. The vibration isolation mount according to claim 5, wherein The included angle between the two hypotenuses of the isosceles trapezoid structure is between 50° and 70°; and / or The gap is between 5 mm and 6 mm.

7. The vibration isolation mount according to any one of claims 1 to 6, characterized in that, The second vibration isolation part (42) includes: A third vibration isolation cylinder (421) whose outer wall is in contact with the inner wall of the primary separation tube (20); A fourth vibration isolation cylinder (422) whose inner wall is in contact with the outer wall of the secondary separation tube (30); A plurality of second vibration isolation ribs (423), the plurality of second vibration isolation ribs (423) are arranged at intervals along the circumferential direction of the primary separation pipe (20), one end of the second vibration isolation rib (423) is connected to the inner wall of the third vibration isolation cylinder (421), and the other end of the second vibration isolation rib (423) is connected to the outer wall of the fourth vibration isolation cylinder (422).

8. The vibration isolation mount according to claim 7, wherein a strip-shaped groove (4221) is provided on the inner wall of the fourth vibration isolation cylinder (422), the strip-shaped groove (4221) extends along the axial direction of the fourth vibration isolation cylinder (422), a strip-shaped boss (31) is provided on the outer wall of the secondary separation pipe (30), the strip-shaped boss (31) extends along the axial direction of the secondary separation pipe (30), and the strip-shaped boss (31) extends into the strip-shaped groove (4221); and / or, the inner hole of the fourth vibration isolation cylinder (422) is a non-circular structure, and the outer shape of the secondary separation pipe (30) is adapted to the hole shape of the inner hole of the fourth vibration isolation cylinder (422).

9. The vibration isolation mount according to any one of claims 1 to 6, wherein the material of the double-layer vibration isolation main spring (40) is vulcanized rubber; and / or, the materials of the outer pipe (10), the primary separation pipe (20), the secondary separation pipe (30), and the inner core (50) can all be steel, aluminum, or resin fiber.

10. The vibration isolation mount according to any one of claims 1 to 6, characterized in that, The mass of the primary separation pipe (20) is between 30 g and 500 g.

11. A vehicle, characterized in that, The vehicle includes: a vehicle body (60), the vehicle body (60) having a hole to be assembled (61); a vibration isolation mount, the outer pipe (10) of the vibration isolation mount is press-fitted through the hole to be assembled (61), and the vibration isolation mount is the vibration isolation mount according to any one of claims 1 to 10.

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