Automobile rear suspension shock absorber upper support with partition plate rotation prevention design

Abstract

The utility model discloses an automobile rear suspension shock absorber upper support capable of preventing a partition plate from rotating, which relates to the technical field of automobile parts and comprises a shell, a mounting groove is formed in the lower end of the shell, and convex ribs are arranged on the inner circumferential wall of the mounting groove; the end cover is arranged at the notch of the mounting groove; the vibration isolation element is arranged in the mounting groove; the partition plate is arranged in the vibration isolation element, a first limiting groove is formed in the outer wall of the partition plate and used for being matched with the convex rib, and center holes are formed in the middles of the shell, the end cover, the vibration isolation element and the partition plate and used for installing a shock absorber connecting rod. The partition plate and the shock absorber connecting rod are installed together, and the partition plate and the shell are matched through the convex ribs and the second limiting grooves, so that the shock absorber connecting rod can be prevented from rotating; the vibration isolation element and the partition plate can be directly formed in a mold and can also be machined and formed through a prefabricated round pipe machine, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an upper support of an automobile rear suspension shock absorber with a partition plate rotation prevention design. Background Art

[0002] The upper support of the shock absorber is an important elastic element for attenuating automobile vibration. The automobile chassis is connected to the automobile suspension shock absorber through the upper support of the shock absorber. The upper support of the shock absorber can attenuate, decouple and isolate the vibration and noise excited by the road surface and transmitted to the car body through the wheels and shock absorbers, as well as the vibration and noise generated by the shock absorber itself through its polyurethane elastomer vibration isolation element; the vibration isolation element also provides the possibility for the yaw movement of the shock absorber, and satisfies the movement and load requirements of the shock absorber in the axial, radial and yaw directions of the whole vehicle. The performance parameters of the upper support of the shock absorber have a great influence on the dynamic performance of the whole vehicle, and must be accurately adjusted for different chassis designs. Through the reasonable matching between the upper support of the shock absorber and the shock absorber, the performance of the whole vehicle can be improved: reduce the noise level in the car, reduce the vibration amplitude of the body and wheels near the natural frequency, reduce the dynamic load of the wheels, improve driving safety, provide lateral and front and rear direction follow-up, and improve driving safety.

[0003] The cross-section of the housing cavity of the commonly used upper support of the shock absorber is circular, and the corresponding partition cross-section is also circular. With the improvement of the intelligence level of the whole vehicle, the application of adjustable shock absorbers is becoming more and more extensive. As a result, the upper support of the shock absorber with this design will be subjected to the rotational torque transmitted by the shock absorber piston rod during use, causing the partition to rotate relative to the housing, resulting in the problem of the shock absorber control cable being entangled. In severe cases, the cable will be worn, causing the shock absorber to fail. Utility Model Content

[0004] The utility model aims to provide an upper support for a rear suspension shock absorber of an automobile with a design of anti-diaphragm rotation, so as to solve the above technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An upper support for a rear suspension shock absorber of an automobile with a design for preventing a partition from rotating, comprising:

[0007] A housing, wherein a mounting groove is formed at the lower end of the housing, and a convex rib is formed on the inner peripheral wall of the mounting groove;

[0008] An end cover, the end cover being arranged at a notch of the mounting groove;

[0009] A vibration isolation element, wherein the vibration isolation element is disposed in the mounting groove;

[0010] A partition is arranged in the vibration isolation element, and a first limiting groove is provided on the outer wall of the partition for cooperating with the convex rib. A center hole is opened in the middle of the shell, the end cover, the vibration isolation element and the partition for installing the shock absorber connecting rod.

[0011] Preferably, second limiting grooves are provided on both sides of the vibration isolation element, the first limiting groove is directly opposite to the second limiting groove, and the convex rib is located in the second limiting groove.

[0012] Preferably, it further comprises a raised portion, two raised portions are provided on both sides of the lower end of the shell, and each of the raised portions is provided with a connecting hole.

[0013] Preferably, a nut is further included, and the shock absorber connecting rod is connected to the partition through the nut.

[0014] Preferably, the partition plate and the vibration isolation element are integrally formed.

[0015] Preferably, the shell is cast from cast aluminum alloy material.

[0016] Preferably, the partition is made of metal material.

[0017] Preferably, the outer wall of the vibration isolation element abuts against the inner wall of the mounting groove, and the end cover abuts against the vibration isolation element.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] In the utility model, the partition and the shock absorber connecting rod are installed together, and the partition and the shell are matched with each other through the convex rib and the second limiting groove, so that the shock absorber connecting rod can be prevented from rotating; the vibration isolation element can be directly formed with the partition in the mold, and can also be formed by a prefabricated round tube machine to improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the upper support of the automobile rear suspension shock absorber with a rotating anti-partition plate design in the utility model;

[0021] Figure 2 It is a schematic diagram of the cooperation between the upper support and the connecting rod of the shock absorber of the rear suspension of the automobile with the anti-partition plate rotation design in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the vibration isolation element in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the partition in the utility model.

[0024] In the figure: 1. shell; 2. mounting groove; 3. end cover; 4. vibration isolation element; 5. partition; 6. first limiting groove; 7. center hole; 8. shock absorber connecting rod; 9. second limiting groove; 10. protrusion; 11. connecting hole; 12. nut; 13. cable. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Figure 1 It is a schematic cross-sectional view of the upper support of the automobile rear suspension shock absorber with a rotating anti-partition plate design in the utility model; Figure 2 It is a schematic diagram of the cooperation between the upper support and the connecting rod of the shock absorber of the rear suspension of the automobile with the anti-partition plate rotation design in the utility model; Figure 3 It is a structural schematic diagram of the vibration isolation element in the utility model; Figure 4 This is a schematic diagram of the structure of the partition in the utility model, please refer to Figures 1 to 4 As shown, a preferred embodiment is shown, which shows an upper support of a rear suspension shock absorber of an automobile with an anti-diaphragm rotation design, including:

[0029] A housing 1, a mounting groove 2 is provided at the lower end of the housing 1, and a convex rib is provided on the inner peripheral wall of the mounting groove 2;

[0030] An end cover 3 is arranged at the notch of the mounting groove 2;

[0031] A vibration isolation element 4, the vibration isolation element 4 is arranged in the mounting groove 2;

[0032] Partition 5, partition 5 is arranged in the vibration isolation element 4, and a first limiting groove 6 is arranged on the outer wall of partition 5 for cooperating with the convex rib. A center hole 7 is opened in the middle of shell 1, end cover 3, vibration isolation element 4 and partition 5 for installing shock absorber connecting rod 8. In this embodiment, shell 1 is cast by cast aluminum alloy material, and a mounting groove 2 is opened in the middle of the lower end of shell 1, and the cross section of mounting groove 2 is circular, and vibration isolation element 4 is squeezed into mounting groove 2 by the action of end cover 3, and partition 5 and mounting groove 2 cooperate with each other through convex rib and first limiting groove 6 to realize the limitation of vibration isolation element 4. Partition 5 is arranged in vibration isolation element 4, and partition 5 and vibration isolation element 4 are integrally formed. See Figure 1 As shown, the center hole 7 passes through the housing 1, the end cover 3, the vibration isolation element 4 and the partition 5, that is, the through hole in the middle of the housing 1, the through hole in the middle of the end cover 3, the through hole in the middle of the vibration isolation element 4 and the through hole in the middle of the partition 5 together form the center hole 7, and the shock absorber connecting rod 8 is installed in the center hole 7 and is connected and fixed to the partition 5. Among them, the shock absorber connecting rod 8 can be provided with a cable 13.

[0033] Further, as a preferred embodiment, second limiting grooves 9 are provided on both sides of the vibration isolation element 4, the first limiting grooves 6 are directly opposite to the second limiting grooves 9, and the convex ribs are located in the second limiting grooves 9. Among them, the partition 5 is arranged in the vibration isolation element 4, and the second limiting grooves 9 on both sides of the vibration isolation element 4 are located in the first limiting grooves 6 of the partition 5. Since the vibration isolation element 4 is elastic, when the outer wall of the vibration isolation element 4 is squeezed, it is finally necessary to rely on rigid support to avoid the second limiting grooves 9 on the vibration isolation element 4 from being separated from the convex ribs, which can effectively improve the stability of the performance of the parts, see Figure 3 and Figure 4 As shown, the cross-sections of the first limiting groove 6 and the second limiting groove 9 are both U-shaped. Two convex ribs, two first limiting grooves 6 and two second limiting grooves 9 are provided.

[0034] Furthermore, as a preferred embodiment, it also includes a raised portion 10, and two raised portions 10 are provided on both sides of the lower end of the housing 1, and each raised portion 10 is provided with a connection hole 11. The raised portion 10 can be welded to the housing 1 or integrally formed, and the raised portion 10 is provided with a connection hole 11, which is used to fix the upper support of the shock absorber to the vehicle body through bolts passing through the connection holes 11. The housing 1 is cast from a cast aluminum alloy material, and different types of materials can be selected according to different application requirements of the parts.

[0035] Further, as a preferred embodiment, it also includes a nut 12, and the shock absorber connecting rod 8 is connected to the partition plate 5 through the nut 12. Figure 2 As shown, the bolt is installed on the shock absorber connecting rod 8, and the shock absorber connecting rod 8 is provided with a limiting shoulder for supporting the partition 5 and cooperating with the bolt to fix the shock absorber connecting rod 8 on the partition 5. When in use, the shock absorber connecting rod 8 is passed through the center hole 7, and then the nut 12 is installed to connect and fix the shock absorber connecting rod 8 to the partition 5.

[0036] Furthermore, as a preferred embodiment, the partition plate 5 is made of metal material, such as steel or aluminum alloy or other metal materials.

[0037] Furthermore, as a preferred embodiment, the outer wall of the vibration isolation element 4 abuts against the inner wall of the installation groove 2, and the end cover 3 abuts against the vibration isolation element 4, so that the end cover 3 presses the vibration isolation element 4 and installs the vibration isolation element 4 in the installation groove 2.

[0038] The vibration isolation element 4 in this embodiment is made of an elastomeric material, for example, a porous polyurethane elastomer.

[0039] In this embodiment, in actual use, the vibration isolation element 4 is assembled in the installation groove 2 with a certain pre-compression stress, which refers to the presence of a certain compression stress inside the vibration isolation element 4 when the support on the shock absorber is not subjected to any external force, and the compression stress is achieved by installing the vibration isolation element 4 in a space smaller than its volume. The vibration isolation element 4 supported on the shock absorber is axially clamped inside the closed housing 1 and is subjected to a certain pre-compression deformation, and its axial pre-compression amount is the ratio of the height difference between the vibration isolation element 4 in the free state and the height difference after installation to the free height; for example, a vibration isolation element 4 with a height of 35 mm is installed in a 26 mm high installation groove 2 with the same diameter, and its axial pre-compression amount is (35-26) / 35=25.7%; the axial pre-compression amount of the vibration isolation element 4 in this embodiment is 5% to 70%, and the commonly used range is 15% to 45%. The vibration isolation element 4 radially cooperates with the inner wall of the mounting groove 2 and undergoes a certain pre-compression deformation. Its radial pre-compression is the ratio of the difference between the diameter of the vibration isolation element 4 in the free state and the diameter after installation to the diameter in the free state; for example, a vibration isolation element 4 with a diameter of 50 mm is installed in a mounting groove 2 with a diameter of 48 mm, and the diameter of the partition 5 is 45 mm, then its radial pre-compression is (50-48) / (50-45)=40%; the radial pre-compression of the vibration isolation element 4 in this embodiment is 0.1%~70%, and the commonly used range is 15%~45%.

[0040] In this embodiment, the partition plate 5 is a component for fixing the shock absorber connecting rod 8 to complete the connection between the upper support of the shock absorber and the shock absorber, the vehicle body or other chassis components; the partition plate 5 is located at the center of the vibration isolation element 4. The cross-section of the partition plate 5 is similar to the cross-section of the mounting groove 2, and there is a uniform gap between the two in the radial direction. The contact surface of the partition plate 5 and the vibration isolation element 4 is matched in axial concave and convex, and the contact surface area should be as large as possible under the premise of ensuring easy production and assembly.

[0041] The installation method of the shock absorber upper support on the whole vehicle and the connection method with the shock absorber in this embodiment are consistent with the existing shock absorber upper support.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An upper support for a rear suspension shock absorber of an automobile with a design for preventing the rotation of a partition plate, characterized in that: include: A housing, wherein a mounting groove is formed at the lower end of the housing, and a convex rib is formed on the inner peripheral wall of the mounting groove; An end cover, the end cover being arranged at a notch of the mounting groove; A vibration isolation element, wherein the vibration isolation element is disposed in the mounting groove; A partition is arranged in the vibration isolation element, and a first limiting groove is provided on the outer wall of the partition for cooperating with the convex rib. A center hole is opened in the middle of the shell, the end cover, the vibration isolation element and the partition for installing the shock absorber connecting rod.

2. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: Second limiting grooves are provided on both sides of the vibration isolation element, the first limiting groove is directly opposite to the second limiting groove, and the convex rib is located in the second limiting groove.

3. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: It also includes a protrusion, two protrusions are arranged on both sides of the lower end of the shell, and each of the protrusions is provided with a connecting hole.

4. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: A nut is also included, through which the shock absorber connecting rod is connected to the partition plate.

5. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: The partition plate and the vibration isolation element are integrally formed.

6. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: The shell is cast from cast aluminum alloy material.

7. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: The partition is made of metal material.

8. The upper support of the automobile rear suspension shock absorber with a partition plate rotation prevention design as claimed in claim 1, characterized in that: The outer wall of the vibration isolation element abuts against the inner wall of the mounting groove, and the end cover abuts against the vibration isolation element.

Images