Shock absorber
By setting a boss on the intermediate cylinder and an extension of the regulating valve to achieve end-face sealing connection, the problems of complex structure and poor cleanliness of existing shock absorbers are solved, the manufacturing process is simplified and the sealing effect and product quality are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-03-24
AI Technical Summary
Existing shock absorber cylinders have complex structures, are difficult to manufacture, and the welding process can easily lead to poor cylinder cleanliness.
A boss is set on the intermediate cylinder, and first and second extensions are formed on the regulating valve. The end face sealing connection is achieved by the first sealing element contacting the boss and extensions, which replaces the traditional welded connection nozzle and simplifies the manufacturing process.
It improves sealing performance, reduces structural complexity, decreases the volume of the intermediate cylinder, avoids contamination from welding impurities, and enhances product quality and user experience.
Smart Images
Figure CN224032995U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to shock absorber technical field, concretely relates to a shock absorber. BACKGROUND
[0002] The shock absorber is an important part of the automobile suspension system, when the automobile shakes, the oil in the shock absorber cylinder will flow from one chamber to another chamber repeatedly under the action of the piston rod, thereby playing a damping role, and the kinetic energy generated by the relative movement between the piston rod and the cylinder will be finally converted into the heat energy of the oil and dissipated outward.
[0003] The existing shock absorber is sealed and connected with the cylinder by the adjusting valve, and the cylinder of the shock absorber is specially designed, so that the structure of the cylinder is complex, and the manufacturing process is difficult.
[0004] Therefore, the utility model hopes to provide a kind of scheme to solve the problems of the prior art. UTILITY MODEL CONTENT
[0005] In order to overcome the defects of the prior art, the utility model provides a shock absorber, and the specific technical scheme is as follows:
[0006] The utility model provides a kind of shock absorber, including adjusting valve and by inside to outside in turn set up inner cylinder, intermediate cylinder and outer cylinder, the inner cylinder is provided with first through hole, the inner cylinder with the intermediate cylinder is communicated by the first through hole, the intermediate cylinder with the outer cylinder is communicated by the adjusting valve;
[0007] The intermediate cylinder is provided with boss, the boss is provided with second through hole, the outer cylinder is provided with third through hole, the adjusting valve is set on the outer cylinder, and the adjusting valve is connected with the intermediate cylinder after passing through the third through hole and the second through hole;
[0008] Wherein, first extension and second extension are formed in turn on the adjusting valve, the outer diameter of the first extension is greater than the outer diameter of the second extension, the first extension and the second extension pass through the third through hole, and the second extension passes through the second through hole and is connected with the intermediate cylinder;First sealing element is arranged on the second extension, and the first sealing element is in contact with the boss and the first extension on both sides to realize the sealed connection of the intermediate cylinder and the adjusting valve.
[0009] In one embodiment, the side of the boss towards the adjusting valve has a sealing surface, the second through hole is arranged on the sealing surface, the sealing surface is in contact with the first sealing element, and the area of the sealing surface ranges from 2cm 2 to 10cm 2 .
[0010] In one specific embodiment, the intermediate cylinder is a cylinder or a cylinder-like body, and the outer wall of the intermediate cylinder is tangent to the sealing surface.
[0011] In one specific embodiment, the second extension forms a flush surface with the inner wall of the boss after passing through the second through hole.
[0012] Alternatively, the second extension protrudes from the inner wall of the boss after passing through the second through hole.
[0013] In one specific embodiment, the first sealing member is arranged around the outer periphery of the second extension by interference fit with the second extension.
[0014] In one specific embodiment, the axis of the second through hole coincides with the axis of the third through hole.
[0015] In one specific embodiment, the boss is integrally formed with the intermediate cylinder.
[0016] In one specific embodiment, the intermediate cylinder comprises an intermediate cylinder body and two cylindrical bodies arranged at the two ends of the intermediate cylinder body respectively, the boss is arranged on the intermediate cylinder body, and the cylindrical bodies are in contact with the outer wall of the inner cylinder.
[0017] In one specific embodiment, the cylindrical body abuts the end of the intermediate cylinder body and extends to the inside of the intermediate cylinder body to form an inner extension, the outer wall of the inner extension is in contact with the inner wall of the intermediate cylinder body, and the inner wall of the inner extension is in contact with the outer wall of the inner cylinder.
[0018] In one specific embodiment, at least one of the inner wall of the cylindrical body and the outer wall of the inner cylinder is provided with a sealing groove, and a second sealing member is arranged in the sealing groove.
[0019] The utility model has at least the following beneficial effects:
[0020] The shock absorber of the utility model is based on that the boss is arranged on the intermediate cylinder, the first extension and the second extension are formed on the adjusting valve, the first sealing member arranged on the second extension can be arranged on the boss by contacting the boss and the first extension respectively, the second through hole on the boss is sealed, the intermediate cylinder and the adjusting valve are sealed and connected in the form of end face sealing, and the sealing effect is good.
[0021] The boss of the utility model can be formed by machining, instead of the connecting nozzle welded on the intermediate cylinder in the traditional scheme, the structural complexity is reduced, the overall volume of the intermediate cylinder is reduced, and the manufacturing process is simplified.
[0022] The boss does not need to use a welding process for manufacturing, avoids impurities falling into the intermediate cylinder in the welding process to cause poor cylinder cleanliness, and improves product quality and use experience of the device. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0024] Figure 1 It is a whole structure schematic view of the shock absorber of the utility model;
[0025] Figure 2 It is a first explosion schematic view of the shock absorber of the utility model;
[0026] Figure 3 It is a second explosion schematic view of the shock absorber of the utility model;
[0027] Figure 4 It is a whole structure cross section schematic view of the shock absorber of the utility model;
[0028] Figure 5 It is a detailed view A in Figure 4
[0029] Figure 6 It is a detailed view B in Figure 4
[0030] Reference signs:
[0031] 1-adjusting valve;11-first extension;12-second extension;121-oil passing port;13-oil passing channel;14-valve core;2-inner cylinder;3-intermediate cylinder;31-boss;311-sealing surface;32-intermediate cylinder main body;33-cylindrical body;331-first cylinder body;332-second cylinder body;4-outer cylinder;5-first through hole;6-second through hole;7-third through hole;8-first sealing member;9-second sealing member;10-sealing groove;15-inner extension section. DETAILED DESCRIPTION
[0032] In the following, various embodiments of the utility model will be described more fully. The utility model can have various embodiments, and adjustments and changes can be made therein. However, it should be understood that there is no intention to limit various embodiments of the utility model to the specific embodiments disclosed herein, but the utility model should be understood to cover all adjustments, equivalents and / or alternatives falling within the spirit and scope of various embodiments of the utility model.
[0033] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of the disclosed functions, operations, or elements and does not limit one or more functions, operations, or elements from being added. Also, as used in various embodiments of the present application, the terms "include", "have", and their conjugates merely indicate that specific features, numbers, steps, operations, elements, components, or combinations thereof are present and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.
[0034] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination of the listed terms or all combinations thereof. For example, the expression "A or B" or "at least one of A or / and B" can include A, can include B, or can include both A and B.
[0035] The expressions (such as "first", "second", etc.) used in various embodiments of the present application can modify various constituent elements in various embodiments, but can not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are used only for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, the first element can be referred to as the second element, and likewise, the second element can be referred to as the first element without departing from the scope of various embodiments of the present application.
[0036] It should be noted that in the present application, unless otherwise explicitly specified and defined, the terms "mounting", "connection", "fixing", etc. should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be direct connection, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] Please refer to Figures 1 to 6 The present application provides a kind of shock absorber, including regulating valve 1 and by inside to outside sequentially cover and set inner cylinder 2, intermediate cylinder 3 and outer cylinder 4, inner cylinder 2 is provided with first through hole 5, inner cylinder 2 and intermediate cylinder 3 are communicated by first through hole 5, intermediate cylinder 3 and outer cylinder 4 are communicated by regulating valve 1.
[0038] The intermediate cylinder 3 is provided with a boss 31, the boss 31 is provided with a second through hole 6, the outer cylinder 4 is provided with a third through hole 7, and the adjusting valve 1 is arranged on the outer cylinder 4 and connected with the intermediate cylinder 3 through the third through hole 7 and the second through hole 6.
[0039] The first extension part 11 and the second extension part 12 are sequentially formed on the adjusting valve 1, the outer diameter of the first extension part 11 is larger than that of the second extension part 12, the first extension part 11 and the second extension part 12 pass through the third through hole 7, and the second extension part 12 is connected with the intermediate cylinder 3 through the second through hole 6.
[0040] The first sealing piece 8 arranged on the second extension part 12 can be arranged on the boss 31 by contacting the boss 31 and the first extension part 11, and the second through hole 6 on the boss 31 is sealed, so that the intermediate cylinder 3 and the adjusting valve 1 are connected in a face seal mode, and the sealing effect is good.
[0041] In addition, the boss 31 can be formed by machining, instead of the connecting nozzle welded on the intermediate cylinder 3 in the traditional scheme, so that the structural complexity is reduced, the manufacturing process is simplified, and impurities in the welding process are prevented from falling into the intermediate cylinder 3 to cause poor cylinder cleanliness.
[0042] It should be noted that in actual application, the inner cylinder 2 is also provided with a movable piston rod (not shown in the drawings), the outer cylinder 4 is externally sleeved with a spring (not shown in the drawings), and the specific arrangement mode of the piston rod and the spring can refer to the prior art, and the utility model is not limited in this regard. Figure 5 The second extension part 12 is provided with an oil passing hole 121, the adjusting valve 1 is internally provided with an oil passing channel 13, the intermediate cylinder 3 is communicated with the outer cylinder 4 through the oil passing hole 121 and the oil passing channel 13, the adjusting valve 1 is internally provided with a movable valve core 14, and the communication degree of the oil passing hole 121 and the oil passing channel 13 is controlled by the valve core 14.
[0043] In one specific embodiment, referring to Figure 3 The side of the boss 31 facing the adjusting valve 1 has a sealing surface 311, the second through hole 6 is arranged on the sealing surface 311, the sealing surface 311 is in contact with the first sealing piece 8, and the area range of the sealing surface 311 is between 2cm 2 and 10cm 2 .
[0044] Specifically, in the embodiment, the area of the sealing surface 311 can be adjusted adaptively between 2 cm 2 and 10 cm 2 to meet different use requirements and adapt to different use scenarios, with good flexibility and adaptability.
[0045] For example, in actual application, the cross section of the sealing surface 311 and the first extension 11 can both be annular, and the first sealing member 8 can be an annular sealing ring arranged on the second extension 12. Preferably, the outer diameter of the sealing surface 311 is greater than the outer diameter of the first sealing member 8 and the outer diameter of the first extension 11, so that the projection of the first sealing member 8 and the first extension 11 on the sealing surface 311 is located within the sealing surface 311, thereby improving the contact stability of the first sealing member 8 with the sealing surface 311 and the first extension 11, and further improving the sealing effect of the first sealing member 8 on the second through hole 6, with good sealing effect.
[0046] Further, the intermediate cylinder 3 can be a cylinder or a cylinder-like body, and the outer wall of the intermediate cylinder 3 is tangent to the sealing surface 311 of the boss 31, so that the boss 31 does not occupy too much space. Compared with the prior art scheme of providing a connecting nozzle, the embodiment greatly reduces the structural complexity of the intermediate cylinder 3 and improves the aesthetics and use experience of the device.
[0047] In other cases, the sealing surface 311 of the boss 31 can also protrude from the outer wall of the intermediate cylinder 3 as needed, and the protruding height of the sealing surface 311 can be between 1 mm and 10 mm.
[0048] In one specific embodiment, the second extension 12 forms a flush surface with the inner wall of the boss 31 after passing through the second through hole 6. Alternatively, please refer to Figure 5 , the second extension 12 protrudes from the inner wall of the boss 31 after passing through the second through hole 6.
[0049] As can be understood, in the embodiment, since the second extension 12 forms a flush surface with the inner wall of the boss 31 or protrudes from the inner wall of the boss 31, the second extension 12 is not easy to come out of the second through hole 6, improving the setting stability of the regulating valve 1, and the oil in the intermediate cylinder 3 will not be stored in the second through hole 6, thereby also improving the sealing between the intermediate cylinder 3 and the outer cylinder 4.
[0050] In the embodiment, preferably, the outer diameter of the second extension 12 is equal to the hole diameter of the second through hole 6, and the outer wall of the second extension 12 is in close contact with the inner wall of the second through hole 6 to play a sealing role.
[0051] In one specific embodiment, the first seal 8 is arranged on the outer periphery of the second extension 12 in an interference fit with the second extension 12.
[0052] Specifically, the first seal 8 can be an annular seal ring, and the inner diameter of the first seal 8 is smaller than the outer diameter of the second extension 12, so that the first seal 8 can be arranged on the outer periphery of the second extension 12 and interference fit with the second extension 12. In this way, the first seal 8 can not only seal the second through hole 6 in a face seal manner by contacting the boss 31 and the first extension 11 respectively, but also further improve the sealing effect between the second extension 12 and the second through hole 6 by applying a radial extrusion force to the second extension 12.
[0053] In one specific embodiment, please refer to Figure 3 , the axis of the second through hole 6 coincides with the axis of the third through hole 7, and the common axis of the two can be referred to as the dashed line shown in the figure. In this way, the first extension 11 and the second extension 12 of the regulating valve 1 can be arranged along the common axis of the two towards the boss 31, wherein the first extension 11 can be arranged along the axis direction and face seal connected to the second through hole 6 on the boss 31 in a manner of extruding the first seal 8, realizing the face seal connection between the intermediate cylinder 3 and the regulating valve 1, and the sealing effect is good.
[0054] In one specific embodiment, the boss 31 is integrally formed with the intermediate cylinder 3. Specifically, the boss 31 can be integrally formed on the intermediate cylinder 3 by machining, so as to avoid adopting a welding process, and avoid impurities falling into the intermediate cylinder 3 during the welding process, thereby improving the quality and use experience of the device.
[0055] In other cases, the boss 31 can also be arranged on the intermediate cylinder 3 in other ways, and the arrangement of the boss 31 is not limited. For example, the boss 31 can also be arranged on the intermediate cylinder 3 in a detachable connection manner such as buckle connection, so that the boss 31 can be replaced and adjusted as needed.
[0056] In one specific embodiment, please refer to Figure 4 and Figure 6 , the intermediate cylinder 3 includes an intermediate cylinder body 32 and two cylindrical bodies 33, the boss 31 is arranged on the intermediate cylinder body 32, and the two cylindrical bodies 33 are arranged at both ends of the intermediate cylinder body 32 and contact the outer wall of the inner cylinder 2.
[0057] In this embodiment, based on the fact that the cylindrical body 33 is arranged at the end of the intermediate cylinder body 32 and contacts the outer wall of the inner cylinder 2, the sealing connection between the intermediate cylinder body 32 and the inner cylinder 2 can be initially realized, so that the intermediate cylinder body 32 and the inner cylinder 2 are only connected through the first through hole 5.
[0058] Preferably, the cylindrical body 33 is configured to be separable from the intermediate cylinder body 32, so that different sizes of the cylindrical body 33 can be flexibly replaced according to actual needs, so that the device has good flexibility.
[0059] In one specific embodiment, the cylindrical body 33 abuts the end of the intermediate cylinder body 32 and extends into the interior of the intermediate cylinder body 32 to form an inner extension section 15, the outer wall of the inner extension section 15 is in contact with the inner wall of the intermediate cylinder body 32, and the inner wall of the inner extension section 15 is in contact with the outer wall of the inner cylinder 2.
[0060] Exemplarily, referring to Figure 6 , the cylindrical body 33 can include a first cylindrical body 331 and a second cylindrical body 332, and the second cylindrical body 332 is sleeved on the first cylindrical body 331. The first cylindrical body 331 is sleeved in the intermediate cylinder body 32 from the end of the intermediate cylinder body 32 until the second cylindrical body 332 abuts the end of the intermediate cylinder body 32, and the inner extension section 15 is the part of the first cylindrical body 331 sleeved in the intermediate cylinder body 31. Specifically, the outer wall of the inner extension section 15 is in close contact with the inner wall of the intermediate cylinder body 32, and the inner wall of the inner extension section 15 is in close contact with the outer wall of the inner cylinder 2, so as to realize the sealed connection between the inner cylinder 2 and the intermediate cylinder body 32. The outer wall of the inner extension section 15 can also be integrally formed with the inner wall of the intermediate cylinder body 32, so as to improve the sealing effect between the intermediate cylinder body 32 and the inner cylinder 2, but the intermediate cylinder body 32 cannot be separated from the intermediate cylinder body 32.
[0061] Further, at least one of the inner wall of the cylindrical body 33 and the outer wall of the inner cylinder 2 is provided with a sealing groove 10, and the second sealing element 9 is arranged in the sealing groove 10, and the inner wall of the cylindrical body 33 is sealed and connected to the inner cylinder 2 by the second sealing element 9.
[0062] The second sealing element 9 can be a ring-shaped sealing ring, and the number of the second sealing element 9 can be one or more. Exemplarily, in the embodiment in which the cylindrical body 33 includes the first cylindrical body 331 and the second cylindrical body 332, the sealing groove 10 can be arranged on the inner wall of the first cylindrical body 331, and the number of the sealing groove 10 can be two, and the second sealing element 9 is arranged in each sealing groove 10.
[0063] In conclusion, the shock absorber provided by the utility model, based on the boss 31 arranged on the middle cylinder 3 and the first extension part 11 and the second extension part 12 formed on the adjusting valve 1, the first sealing piece 8 arranged on the second extension part 12 can be arranged on the boss 31 by contacting the boss 31 and the first extension part 11 respectively, and the second through hole 6 on the boss 31 is sealed, so that the middle cylinder 3 and the adjusting valve 1 are connected in the form of end face sealing, and the sealing effect is good. Moreover, the boss 31 of the utility model can be formed by machining, instead of the connecting nozzle welded on the middle cylinder 3 in the traditional scheme, so that the structural complexity is reduced, the overall volume of the middle cylinder 3 is reduced, the manufacturing process is simplified, and impurities in the welding process are prevented from falling into the middle cylinder 3 to cause poor cleanliness of the cylinder body.
[0064] Further, the sealing surface 311 of the boss 31 can be tangent to the outer wall of the middle cylinder 3, so that the space occupation of the boss 31 is small, compared with the scheme of arranging the connecting nozzle in the prior art, the structural complexity and the bloated degree of the middle cylinder 3 are greatly reduced, and the appearance and the use experience of the device are improved.
[0065] In addition, by arranging the cylindrical body 33 on the middle cylinder main body 32 and contacting the outer wall of the inner cylinder 2, the sealing connection between the middle cylinder main body 32 and the inner cylinder 2 can be realized. The cylindrical body 33 can be configured to be separable from the middle cylinder main body 32, so that different sizes of the cylindrical body 33 can be flexibly replaced according to actual needs, so that the device has good flexibility.
[0066] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily necessary for implementing the utility model.
[0067] Those skilled in the art can understand that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the description of the implementation scenario, or can be changed and located in one or more devices different from the implementation scenario. The modules of the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.
[0068] The above-mentioned utility model serial number is only for description, and does not represent the advantages and disadvantages of the implementation scenario.
[0069] The above-mentioned utility model serial number is only for description, and does not represent the advantages and disadvantages of the implementation scenario.
[0069] The above-mentioned utility model serial number is only for description, and does not represent the advantages and disadvantages of the implementation scenario.
Claims
1. A shock absorber characterized by, The adjusting valve and the inner cylinder, the intermediate cylinder and the outer cylinder are sequentially sleeved from inside to outside, the inner cylinder is provided with a first through hole, the inner cylinder and the intermediate cylinder are communicated through the first through hole, and the intermediate cylinder and the outer cylinder are communicated through the adjusting valve; The intermediate cylinder is provided with a boss, the boss is provided with a second through hole, the outer cylinder is provided with a third through hole, the adjusting valve is arranged on the outer cylinder, and the adjusting valve is connected with the intermediate cylinder after penetrating through the third through hole and the second through hole; The first extension part and the second extension part are sequentially formed on the adjusting valve, the outer diameter of the first extension part is greater than that of the second extension part, the first extension part and the second extension part penetrate through the third through hole, and the second extension part penetrates through the second through hole and is connected with the intermediate cylinder; the first sealing piece is arranged on the second extension part, and the first sealing piece is in contact with the boss and the first extension part on both sides to realize the sealed connection of the intermediate cylinder and the adjusting valve.
2. A shock absorber according to claim 1, wherein The convex has a sealing surface toward one side of the regulating valve, the second through hole is arranged on the sealing surface, the sealing surface is in contact with the first sealing piece, and an area of the sealing surface ranges between 2 cm 2 and 10 cm 2 .
3. A shock absorber according to claim 2, wherein The intermediate cylinder is a cylinder or a cylinder-like body, and the outer wall of the intermediate cylinder is tangent to the sealing surface.
4. A shock absorber according to claim 1, wherein The second extension part forms a flush surface with the inner wall of the boss after penetrating through the second through hole. Alternatively, the second extension part protrudes from the inner wall of the boss after penetrating through the second through hole.
5. A shock absorber according to claim 1, wherein The first sealing piece is arranged on the outer periphery of the second extension part in an interference fit manner.
6. A shock absorber according to claim 1, wherein The axis of the second through hole coincides with the axis of the third through hole.
7. A shock absorber according to claim 1, wherein The boss is integrally formed with the intermediate cylinder.
8. A shock absorber according to claim 1, wherein The intermediate cylinder comprises an intermediate cylinder main body and two cylindrical bodies arranged at two ends of the intermediate cylinder main body respectively, the boss is arranged on the intermediate cylinder main body, and the cylindrical bodies are in contact with the outer wall of the inner cylinder.
9. A shock absorber according to claim 8, wherein The cylindrical body abuts against the end of the intermediate cylinder main body and extends to the inside of the intermediate cylinder main body to form an inner extension section, the outer wall of the inner extension section is in contact with the inner wall of the intermediate cylinder main body, and the inner wall of the inner extension section is in contact with the outer wall of the inner cylinder.
10. A shock absorber according to claim 8, wherein At least one of the inner wall of the cylindrical body and the outer wall of the inner cylinder is provided with a sealing groove, and a second sealing piece is arranged in the sealing groove.