Double-vibration-isolation liquid seal structure and vehicle
By introducing interlayer inner core and multi-layer rubber body structure into the liquid seal structure, the first and second stage vibration isolation is achieved, which solves the problems of poor vibration attenuation ability of traditional hydraulic bushings and insufficient high-frequency vibration treatment, and improves the whole vehicle Driving experience and dynamic performance.
Patent Information
- Application Number
- CN202420441327.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-07
AI Technical Summary
Traditional hydraulic bushings have shortcomings in vibration attenuation capabilities and high-frequency vibration treatment, which leads to some vibration being transmitted to the car body, affecting the driving experience.
Adopt a double vibration isolation liquid seal structure, including an interlayer inner core and an outer rubber body. The interlayer inner core consists of a first inner tube, a rubber interlayer and a second inner tube to form a secondary vibration isolation. The outer rubber body is surrounded by a flow channel and is connected with the outer tube. Sealing, first-stage and second-stage vibration isolation is achieved through a multi-layer structure, improving vibration attenuation performance.
It significantly improves the vibration attenuation performance and high-frequency characteristics of the liquid seal, improves the driving experience, and meets the dynamic stiffness requirements at high frequencies.
Smart Images
Figure CN222208774U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a double vibration isolation liquid seal structure and a vehicle with the structure. Background Art
[0002] Liquid sealing bushings are mainly installed in suspension, subframes and stabilizer bars. When the vehicle is running, unexpected vibrations will occur. Liquid sealing bushings can not only limit displacement and protect surrounding products, but also isolate vibrations and enhance driving experience. They are one of the key components in a car.
[0003] Traditional hydraulic bushings only have one layer of rubber, which serves to seal the liquid chamber and utilizes the flow of rubber and damping fluid to generate damping, further attenuating vibrations.
[0004] The hydraulic bushings currently used in vehicles have the following disadvantages:
[0005] (1) Generally, there is only one layer of vibration isolation rubber, which has poor vibration attenuation ability. Some vibration can still be transmitted to the car body through the hydraulic bushing, affecting the driving experience.
[0006] (2) There are structural limitations. The stiffness in the direction of the liquid chamber is relatively simple and performs poorly under high-frequency vibration. Utility Model Content
[0007] The embodiment of the utility model provides a double vibration isolation liquid seal structure and a vehicle, aiming to improve the problems of poor vibration attenuation capability and poor rigidity of the current hydraulic bushing.
[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a double vibration isolation liquid seal structure, including:
[0009] The sandwich inner core comprises a first inner tube, a rubber sandwich layer and a second inner tube which are arranged in sequence from the inside to the outside, forming a secondary vibration isolation;
[0010] The outer rubber body is arranged on the outer side of the sandwich inner core to form a first-level vibration isolation;
[0011] A flow channel is disposed around the outer wall of the outer rubber body and communicated with the liquid chamber on the outer rubber body; and
[0012] The outer tube is arranged on the outer side of the outer rubber body and seals the flow channel.
[0013] In combination with the first aspect, in one achievable manner, both axial ends of the rubber interlayer have a first annular cavity.
[0014] In combination with the first aspect, in one achievable manner, a first anti-rotation plane is provided on the outer wall of the rubber interlayer, and the inner wall of the second inner tube has a first fitting surface that fits the first anti-rotation plane.
[0015] In combination with the first aspect, in one achievable manner, the outer wall of the second inner tube has a second anti-rotation plane; and the inner wall of the outer rubber body has a second fitting surface that fits the second anti-rotation plane.
[0016] In combination with the first aspect, in one achievable manner, second annular cavities are provided at both axial ends of the outer rubber body.
[0017] In combination with the first aspect, in one achievable manner, a thickened portion is provided on the outer rubber body covering the second inner tube portion in the second annular cavity.
[0018] In combination with the first aspect, in one achievable manner, the thickened portion is located outside the second fitting surface of the outer rubber body.
[0019] In combination with the first aspect, in one achievable manner, the thickened portions are symmetrically arranged on the outer rubber body.
[0020] In combination with the first aspect, in one achievable manner, a limiting groove for limiting the flow channel is provided on the outer wall of the outer rubber body.
[0021] Compared with the prior art, the double vibration isolation liquid seal structure provided by the utility model has the following beneficial effects: a sandwich inner core is adopted, and a rubber interlayer is provided in the sandwich inner core. After the vibration is attenuated by the first-level vibration isolation formed by the outer rubber body, the rubber interlayer can again attenuate the vibration transmitted from the outer structure to form a second-level vibration isolation, thereby improving the vibration isolation and attenuation performance of the product, thereby improving the driving experience; secondly, the inner core is provided with a rubber interlayer, which improves the high-frequency characteristics of the product and meets the requirements of the dynamic stiffness of the product at high frequencies.
[0022] In a second aspect, an embodiment of the utility model further provides a vehicle provided with the double vibration isolation liquid seal structure.
[0023] The vehicle provided by the embodiment of the utility model adopts the liquid sealing structure with two-stage vibration isolation function and good high-frequency vibration performance, thereby improving the driving experience of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of the three-dimensional structure of a double vibration isolation liquid seal structure provided by an embodiment of the utility model;
[0025] Figure 2 A schematic diagram of a top view of a double vibration isolation liquid seal structure provided in an embodiment of the utility model;
[0026] Figure 3 For along Figure 2 The cross-sectional structure diagram along the AA line;
[0027] Figure 4 For along Figure 2 The cross-sectional structure diagram of the middle BB line;
[0028] Figure 5 A schematic diagram of the explosion structure of the double vibration isolation liquid seal structure provided by an embodiment of the utility model;
[0029] Figure 6 A schematic diagram of the three-dimensional structure of the sandwich core provided by an embodiment of the utility model;
[0030] Figure 7 A schematic diagram of the top view of the sandwich core provided in an embodiment of the utility model;
[0031] Figure 8 For along Figure 7 Cross-sectional structural diagram of the center CC line;
[0032] Fig. 9 For along Figure 7 Cross-sectional structural diagram of the middle DD line;
[0033] Fig.10 A schematic diagram of the three-dimensional structure of the double vibration isolation liquid seal structure provided by an embodiment of the utility model without the outer tube;
[0034] Fig.11 A schematic diagram of the three-dimensional structure of the outer rubber body provided in an embodiment of the utility model;
[0035] Description of reference numerals:
[0036] 1. Outer tube; 2. Outer rubber body; 21. Thickened portion; 22. Second annular cavity; 23. Liquid chamber; 24. Second fitting surface; 25. Position limiting groove; 3. Sandwich inner core; 31. First inner tube; 32. Rubber interlayer; 321. First annular cavity; 322. First anti-rotation plane; 33. Second inner tube; 331. Second anti-rotation plane; 4. Flow channel. DETAILED DESCRIPTION
[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0038] Please also read Figures 1 to 11The double vibration isolation liquid seal structure provided by the utility model is now described. The double vibration isolation liquid seal structure comprises: a sandwich inner core 3, an outer rubber body 2, a flow channel 4 and an outer tube 1. The sandwich inner core 3 comprises a first inner tube 31, a rubber sandwich 32 and a second inner tube 33 arranged in sequence from the inside to the outside, forming a secondary vibration isolation; the outer rubber body 2 is arranged on the outer side of the sandwich inner core 3, forming a primary vibration isolation; the flow channel 4 is arranged around the outer wall of the outer rubber body 2 and connected to the liquid chamber 23 on the outer rubber body 2; the outer tube 1 is arranged on the outer side of the outer rubber body 2 and seals the flow channel 4.
[0039] Compared with the prior art, the double vibration isolation liquid seal structure provided by the utility model has the following beneficial effects: a sandwich inner core 3 is adopted, and the sandwich inner core 3 is provided with a rubber interlayer 32. After the vibration is attenuated by the first-level vibration isolation formed by the outer rubber body 2, the rubber interlayer 32 can further attenuate the vibration transmitted from the outer structure to form a second-level vibration isolation, thereby improving the vibration isolation and attenuation performance of the product, thereby improving the driving experience; secondly, the inner core is provided with a rubber interlayer 32, which improves the high-frequency characteristics of the product and meets the requirements of the dynamic stiffness of the product at high frequencies.
[0040] In some embodiments, see Figures 6 to 9 As shown, both axial ends of the rubber interlayer 32 have first annular cavities 321. By providing the first annular cavities 321 at both ends of the rubber interlayer 32, the damping, vibration reduction and energy absorption effects of the secondary vibration isolation can be improved, and the product can also be lightweight.
[0041] Optionally, the first annular cavity 321 is formed as a U-shaped groove opening outward.
[0042] In some embodiments, see Figures 5 to 9 As shown, a first anti-rotation plane 322 is provided on the outer wall of the rubber interlayer 32, and the inner wall of the second inner tube 33 has a first fitting surface that fits the first anti-rotation plane 322. By providing the first anti-rotation plane 322 and the first fitting surface, a circumferential anti-rotation structure with surface-to-surface fitting is provided between the rubber interlayer 32 and the second inner tube 33, thereby ensuring the firmness and reliability of the cooperation between the second inner tube 33 and the rubber interlayer 32, avoiding the problem of relative rotation between the two causing the failure of vibration reduction, force transmission and other functions, thereby ensuring the effectiveness of the two-stage vibration reduction of the product and the effectiveness of high-frequency vibration reduction.
[0043] In order to ensure the reliability of the vibration reduction effect and the integrity of the sandwich core 3 , a first anti-rotation plane 322 and a first fitting surface are symmetrically arranged on the sandwich core 3 .
[0044] In some embodiments, see Figures 5 to 11As shown, the outer wall of the second inner tube 33 has a second anti-rotation plane 331; the inner wall of the outer rubber body 2 has a second fitting surface 24 that fits the second anti-rotation plane 331. By providing the second anti-rotation plane 331 and the second fitting surface 24, a circumferential anti-rotation structure with surface-to-surface fitting is provided between the second inner tube 33 and the outer rubber body 2, thereby ensuring the firmness and reliability of the cooperation between the second inner tube 33 and the outer rubber body 2, avoiding the problem of relative rotation between the two causing the failure of vibration reduction, force transmission and other functions, thereby ensuring the effectiveness of the two-stage vibration reduction of the product and the effectiveness of high-frequency vibration reduction.
[0045] The liquid sealing structure provided in this embodiment forms a two-level circumferential anti-rotation structure of the product through the circumferential anti-rotation structure between the rubber interlayer 32 and the second inner tube 33 and the circumferential anti-rotation structure between the outer rubber body 2 and the second inner tube 33, thereby ensuring the assembly position of each component of the product. When the product is subjected to conventional vibration and unexpected irregular vibration, the effectiveness of the two-level vibration isolation of the product can be ensured, thereby satisfying the driving experience of the driver and passengers regardless of normal driving or encountering emergencies.
[0046] Similarly, a second anti-rotation plane 331 and a second fitting surface 24 are symmetrically arranged between the second inner tube 33 and the outer rubber body 2 to enhance the firmness of the connection between the sandwich inner core 3 and the outer rubber body 2 and prevent relative rotation between the two that may lead to product vibration reduction and force transmission failure.
[0047] It should be noted that the first anti-rotation plane 322 , the first fitting surface, the second anti-rotation plane 331 and the second fitting surface 24 on the same side are parallel to each other, forming a layered structure.
[0048] In some embodiments, Figure 3 As shown, the second annular cavity 22 is provided at both axial ends of the outer rubber body 2. By providing the second annular cavity 22 at both ends of the outer rubber body 2, the damping, vibration reduction and energy absorption effects of the primary vibration isolation can be improved, and the product is also lightened.
[0049] Optionally, the second annular cavity 22 is formed by a U-shaped groove opening outward.
[0050] In some embodiments, Figure 2 , Figure 5 , Figure 10 to Figure 11 As shown, a thickened portion 21 is provided on the outer rubber body 2 covering the second inner tube 33 in the second annular cavity 22. By locally thickening the outer rubber body 2, the radial limiting and buffering effects of the outer rubber body 2 are improved.
[0051] In some embodiments, Figure 2 , Figure 5 , Figure 10 to Figure 11As shown, the thickened portion 21 is located on the outer side of the second fitting surface 24 of the outer rubber body 2. Specifically, by thickening the circumferential anti-rotation structure, the radial limiting and buffering effects can be enhanced.
[0052] In some embodiments, Figure 2 , Figure 5 , Figure 10 to Figure 11 As shown, the outer rubber body 2 is symmetrically provided with thickened portions 21. This embodiment corresponds to a circumferential anti-rotation limiting structure provided in the circumference of the product, and has radial limiting and buffering functions, thereby ensuring the effectiveness of the secondary vibration reduction of the product.
[0053] In some embodiments, Fig.11 As shown, a limiting groove 25 for limiting the flow channel 4 is provided on the outer wall of the outer rubber body 2. The flow channel 4 is located in the middle of the product axial direction, and the limiting groove 25 on the outer rubber body 2 forms an axial limit on the flow channel 4, thereby ensuring the effectiveness of the damping fluid flow.
[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0055] Based on the same inventive concept, an embodiment of the present application also provides a vehicle provided with the double vibration isolation liquid seal structure.
[0056] The vehicle provided by the embodiment of the utility model adopts the liquid sealing structure with two-stage vibration isolation function and good high-frequency vibration performance, thereby improving the driving experience of the whole vehicle.
[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A double vibration isolation liquid seal structure, It is characterized in that include: The sandwich inner core (3) comprises a first inner tube (31), a rubber sandwich layer (32) and a second inner tube (33) which are arranged in sequence from the inside to the outside, forming a secondary vibration isolation; The outer rubber body (2) is arranged on the outer side of the sandwich inner core (3) to form a first-level vibration isolation; A flow channel (4) is arranged around the outer wall of the outer rubber body (2) and is connected to the liquid chamber (23) on the outer rubber body (2); and The outer tube (1) is arranged on the outside of the outer rubber body (2) and seals the flow channel (4).
2. The double vibration isolation liquid seal structure according to claim 1, It is characterized in that Both axial ends of the rubber interlayer (32) are provided with a first annular cavity (321).
3. The double vibration isolation liquid seal structure according to claim 1, It is characterized in that A first anti-rotation plane (322) is provided on the outer wall of the rubber interlayer (32), and the inner wall of the second inner tube (33) has a first fitting surface that fits the first anti-rotation plane (322).
4. The double vibration isolation liquid seal structure as claimed in claim 3, It is characterized in that The outer wall of the second inner tube (33) has a second anti-rotation plane (331); and the inner wall of the outer rubber body (2) has a second fitting surface (24) that fits the second anti-rotation plane (331).
5. The double vibration isolation liquid seal structure as claimed in claim 4, It is characterized in that Second annular cavities (22) are provided at both axial ends of the outer rubber body (2).
6. The double vibration isolation liquid seal structure as claimed in claim 5, It is characterized in that A thickened portion (21) is provided on the outer rubber body (2) covering the portion of the second inner tube (33) in the second annular cavity (22).
7. The double vibration isolation liquid seal structure according to claim 6, It is characterized in that The thickened portion (21) is located outside the second fitting surface (24) of the outer rubber body (2).
8. The double vibration isolation liquid seal structure according to claim 7, It is characterized in that The thickened portion (21) is symmetrically arranged on the outer rubber body (2).
9. The double vibration isolation liquid seal structure according to claim 1, It is characterized in that A limiting groove (25) for limiting the flow channel (4) is provided on the outer wall of the outer rubber body (2).
10. A vehicle, It is characterized in that A double vibration isolation liquid seal structure as described in any one of claims 1 to 9 is provided.