Working cylinder assembly structure for shock absorber
By introducing the first and second intermediate cylinders into the vibration damper working cylinder assembly structure, the dual valve independent adjustment of the damper force is solved, and the existing vibration damper's adjustment range is small and the flexibility of the damper is poor, and the adjustment capability and reliability of the vibration damper are improved.
Patent Information
- Application Number
- CN202422463947.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing shock absorbers cannot achieve independent control during compression and restoration, the damping force adjustment range is small, and the flexibility is poor, which cannot meet the electronically controlled shock absorbers needs of the OEM factory.
A working cylinder assembly structure for shock absorber is designed, including a working cylinder body, a first intermediate cylinder and a second intermediate cylinder sleeved on the outside. By arranging these two intermediate cylinders in the length direction of the working cylinder, independent adjustment of the damping force is achieved, and an elastic sealing ring is used to improve sealing and reliability.
The dual valve independent adjustment of the damping force of the vibration damping force is achieved, which improves the range and flexibility of the damping force adjustment, is simple assembled and has high reliability after installation.
Smart Images
Figure CN223089872U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbers, in particular to a working cylinder assembly structure for a shock absorber. Background Art
[0002] The electronically controlled shock absorber is an important part of the electronically controlled suspension system. Its main function is to reduce the vibration and bump of the vehicle when driving on an uneven road surface, thereby improving the riding comfort and operation stability. Its working principle is that when relative movement occurs due to vibration between the frame (or body) and the axle, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity through different gaps into another cavity. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, converting the vibration energy of the vehicle into heat energy of the oil, and then being absorbed and dissipated into the atmosphere by the shock absorber.
[0003] Conventional shock absorbers include passive shock absorbers and single-valve shock absorbers. Once the damping force of the passive shock absorber is determined, it cannot be adjusted later, and only a partial sports mode or a partial comfort mode can be selected; the single-valve shock absorber adds an oil circuit, and the oil passes through the solenoid valve during both the compression and rebound strokes to achieve the function of adjusting the damping force. However, this single-valve shock absorber cannot achieve independent control during the compression and rebound processes, and the damping force adjustment range is small and the flexibility is poor, which cannot meet the requirements of the current vehicle manufacturers for the damping force of electronically controlled shock absorbers.
[0004] Based on this, a working cylinder assembly structure for a shock absorber is proposed to solve the above-mentioned problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a working cylinder assembly structure for a shock absorber, which realizes the dual-valve control of the shock absorber, thereby improving the range and flexibility of the damping force adjustment of the shock absorber.
[0006] To solve the above technical problems, the utility model provides a working cylinder assembly structure for a shock absorber, which includes a working cylinder main body, a first intermediate cylinder and a second intermediate cylinder which are respectively sleeved on the outer side wall of the working cylinder main body; a plurality of communication holes are circumferentially spaced and penetrated through both ends of the side wall of the working cylinder main body, and the communication holes at both ends of the side wall of the working cylinder main body are respectively located in the first intermediate cylinder and the second intermediate cylinder; oil holes are penetrated through the side walls of the first intermediate cylinder and the second intermediate cylinder, both ends of the inner side walls of the first intermediate cylinder and the second intermediate cylinder are attached to the outer side wall of the working cylinder main body, and mounting grooves are provided at both ends of the inner side walls of the first intermediate cylinder and the second intermediate cylinder, and elastic sealing rings are arranged in the mounting grooves.
[0007] Furthermore, an oil hole end face is arranged at the position of the oil hole, and the flatness of the oil hole end face is 0.05 - 0.2.
[0008] Further, the diameter of the oil hole is 6 mm to 12 mm, and the maximum outer diameter of the end face of the oil hole is 14 mm to 22 mm.
[0009] Further, the length of the second intermediate cylinder is less than the length of the first intermediate cylinder, and the length of the second intermediate cylinder is 23 mm to 200 mm.
[0010] Further, the opening side of the installation groove has an arc chamfer, and the radius of the arc chamfer is 0.2 mm to 0.5 mm.
[0011] Further, the coaxiality between the inner diameter of the first intermediate cylinder and the inner diameter of the installation groove at its end is 0.08.
[0012] Further, the coaxiality between the inner diameter of the second intermediate cylinder and the inner diameter of the installation groove at its end is 0.08.
[0013] Compared with the prior art, the utility model has at least the following beneficial effects:
[0014] The working cylinder assembly structure for a shock absorber provided by the utility model can realize the dual-valve independent adjustment of the damping force of the shock absorber through the first intermediate cylinder and the second intermediate cylinder respectively arranged on the outer side wall of the working cylinder body along the length direction of the working cylinder, improving the adjustment range and flexibility of the damping force of the shock absorber. Further, the assembly process of the first intermediate cylinder and the second intermediate cylinder is simple, and the reliability after installation is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is the overall structural schematic diagram of the working cylinder assembly structure for a shock absorber of the utility model;
[0016] Figure 2 is the sectional schematic diagram of the working cylinder assembly structure for a shock absorber of the utility model;
[0017] Figure 3 is the schematic diagram of the end face of the oil hole in the working cylinder assembly structure for a shock absorber of the utility model;
[0018] Figure 4 is the schematic diagram of the installation groove in the working cylinder assembly structure for a shock absorber of the utility model.
[0019] In the figure, 1 - working cylinder body; 11 - communication hole; 2 - first intermediate cylinder; 3 - second intermediate cylinder; 31 - oil hole; 32 - installation groove; 33 - end face of the oil hole; 4 - elastic sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The structure of the working cylinder assembly for a shock absorber of the present utility model will be described in more detail below in conjunction with the schematic diagrams. The preferred embodiments of the present utility model are shown, and it should be understood that those skilled in the art can modify the present utility model described herein while still achieving the advantageous effects of the present utility model. Therefore, the following description should be understood as a broad guidance for those skilled in the art and not as a limitation on the present utility model.
[0021] In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the present utility model.
[0022] As Figure 1 shown, an embodiment of the present utility model provides a structure of a working cylinder assembly for a shock absorber, which includes a working cylinder body 1, and a first intermediate cylinder 2 and a second intermediate cylinder 3 sleeved on the outer sidewall of the working cylinder body 1 respectively.
[0023] With reference to Figure 2 , a plurality of communication holes 11 are circumferentially spaced and penetrated through both ends of the sidewall of the working cylinder body 1. The communication holes 11 at both ends of the sidewall of the working cylinder body 1 are respectively located in the first intermediate cylinder 2 and the second intermediate cylinder 3. Oil holes 31 are penetrated through the sidewalls of the first intermediate cylinder 2 and the second intermediate cylinder 3. Both ends of the inner sidewalls of the first intermediate cylinder 2 and the second intermediate cylinder 3 are in contact with the outer sidewall of the working cylinder body 1, and mounting grooves 32 are provided at both ends of the inner sidewalls of the first intermediate cylinder 2 and the second intermediate cylinder 3. Elastic sealing rings 4 are arranged in the mounting grooves 32.
[0024] In this embodiment, the first intermediate cylinder 2 and the second intermediate cylinder 3 are axially sleeved on the working cylinder body 1 and both have the oil holes 31, which enables the installation of two solenoid valves on the working cylinder body 1, thereby realizing the dual-valve independent adjustment of the damping force of the shock absorber and improving the adjustment range and flexibility of the damping force of the shock absorber.
[0025] When installing the first intermediate cylinder 2 and the second intermediate cylinder 3, first install the elastic sealing ring 4 into the installation groove 32, then respectively sleeve the first intermediate cylinder 2 and the second intermediate cylinder 3 from both ends of the working cylinder main body 1 onto the outer side wall of the working cylinder main body 1 and adjust them to appropriate positions, and finally limit the two ends of the first intermediate cylinder 2 and the second intermediate cylinder 3. The operation is simple; due to the setting of the elastic sealing ring 4, combined with the design that the two ends of the first intermediate cylinder 2 and the second intermediate cylinder 3 are attached to the outer side wall of the working cylinder main body 1, good sealing performance is achieved between the first intermediate cylinder 2 and the second intermediate cylinder 3 and the working cylinder main body 1, and the reliability is high.
[0026] In a specific embodiment, with reference to Figure 3 , an oil hole end face 33 is provided at the position of the oil hole 31, and the flatness of the oil hole end face 33 is 0.05 - 0.2. By setting the oil hole end face 33, the sealing performance after installing the damping valve is improved.
[0027] Specifically, the diameter d1 of the oil hole 31 is 6 mm - 12 mm, and the maximum outer diameter d2 of the oil hole end face 33 is 14 mm - 22 mm. The diameter d1 of the oil hole 31 is determined according to specific usage requirements, and the maximum outer diameter d2 of the oil hole end face 33 is determined according to the size of the oil hole 31. Specifically, the difference range between the maximum outer diameter d2 of the oil hole end face 33 and the diameter d1 of the oil hole 31 is 8 mm - 10 mm, ensuring that there is enough plane to contact the installed damping valve, thereby ensuring a good hydraulic oil sealing effect.
[0028] In a specific embodiment, the length of the second intermediate cylinder 3 is less than the length of the first intermediate cylinder 2 to ensure effective independent control of the two damping valves. The length of the second intermediate cylinder 2 is 23 mm - 200 mm. The selection of the length of the second intermediate cylinder 2 depends on the specific working conditions.
[0029] In a specific embodiment, with reference to Figure 4 , the opening side of the installation groove 32 has an arc chamfer R, and the radius of the arc chamfer R is 0.2 mm - 0.5 mm. By setting the arc chamfer R, it is convenient to install the elastic sealing ring 4 into the installation groove 32, and at the same time, it avoids damaging the elastic sealing ring 4 at the sharp corners when installing the first intermediate cylinder 2 and the second intermediate cylinder 3 on the working cylinder main body 1.
[0030] In a specific embodiment, the coaxiality between the inner diameter of the first intermediate cylinder 2 and the inner diameter of its end installation groove 32 is 0.08, and the coaxiality between the inner diameter of the second intermediate cylinder 3 and the inner diameter of its end installation groove 32 is 0.08.
[0031] The installation groove 32 and the first intermediate cylinder 2 and the second intermediate cylinder 3 ensure good coaxiality, ensuring the sealing performance after the installation of the first intermediate cylinder 2 and the second intermediate cylinder 3 on the working cylinder body 1.
[0032] In summary, compared with the prior art, the present utility model has at least the following advantages:
[0033] The working cylinder assembly structure for a shock absorber provided by the present utility model can realize the independent adjustment of the double valves of the shock absorber damping force through the first intermediate cylinder and the second intermediate cylinder respectively arranged on the outer side wall of the working cylinder body along the length direction of the working cylinder, improving the adjustment range and flexibility of the shock absorber damping force. Further, the assembly process of the first intermediate cylinder and the second intermediate cylinder is simple, and the reliability after installation is high.
[0034] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.
Claims
1. A working cylinder assembly structure for a shock absorber, characterized in that, It includes a working cylinder body, a first intermediate cylinder and a second intermediate cylinder which are respectively sleeved on the outer side wall of the working cylinder body; A plurality of communication holes are circumferentially spaced and penetrated through both ends of the side wall of the working cylinder body, and the communication holes at both ends of the side wall of the working cylinder body are respectively located in the first intermediate cylinder and the second intermediate cylinder; Oil holes are penetrated through the side walls of the first intermediate cylinder and the second intermediate cylinder. Both ends of the inner side walls of the first intermediate cylinder and the second intermediate cylinder are attached to the outer side wall of the working cylinder body, and mounting grooves are provided at both ends of the inner side walls of the first intermediate cylinder and the second intermediate cylinder, and elastic sealing rings are arranged in the mounting grooves.
2. The working cylinder assembly structure for a shock absorber according to claim 1, characterized in that, An oil hole end face is arranged at the position of the oil hole, and the flatness of the oil hole end face is 0.05 - 0.
2.
3. The working cylinder assembly structure for a shock absorber according to claim 2, characterized in that, The diameter of the oil hole is 6 mm - 12 mm, and the maximum outer circle diameter of the oil hole end face is 14 mm - 22 mm.
4. The working cylinder assembly structure for a shock absorber according to claim 1, characterized in that, The length of the second intermediate cylinder is less than the length of the first intermediate cylinder, and the length of the second intermediate cylinder is 23 mm - 200 mm.
5. The working cylinder assembly structure for a shock absorber according to claim 1, characterized in that, The opening side of the mounting groove has an arc chamfer, and the radius of the arc chamfer is 0.2 mm - 0.5 mm.
6. The structure of the working cylinder assembly for a shock absorber as described in claim 1, characterized in that, The coaxiality between the inner diameter of the first intermediate cylinder and the inner diameter of its end mounting groove is 0.
08.
7. The structure of the working cylinder assembly for a shock absorber according to claim 1, characterized in that The coaxiality between the inner diameter of the second intermediate cylinder and the inner diameter of its end mounting groove is 0.08.