Front fork shock absorber and oil pressure adjusting device thereof

Abstract

The utility model provides a front fork shock absorber and an oil pressure adjusting device thereof. The front fork shock absorber is provided with a front fork spring and an oil pressure adjusting device. One end of the front fork spring is connected with the oil pressure adjusting device. The oil pressure adjusting device is provided with a preload adjusting mechanism, a connecting pipe, an oil pressure adjusting mechanism and working fluid. The preload adjusting mechanism is provided with a preload adjusting piece. The preload adjusting piece is movably arranged in the preload adjusting mechanism and connected to one end of the front fork spring. And the connecting pipe is communicated with the preload adjusting mechanism. The oil pressure adjusting mechanism is arranged at the other end of the connecting pipe and provided with an oil pressure adjusting piece. The oil pressure adjusting piece is arranged in the oil pressure adjusting mechanism. The preload adjusting mechanism, the connecting pipe and the oil pressure adjusting mechanism are filled with the working fluid in a flowing mode, and therefore a user can adjust the oil pressure adjusting piece to enable the working fluid to push the preload adjusting piece to compress the front fork spring without disassembling the vehicle shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber, especially to a front fork shock absorber and an oil pressure adjusting device thereof. BACKGROUND

[0002] The existing front fork shock absorber has an outer tube, a front fork spring and an inner tube. The outer tube is sleeved on the top end of the inner tube and has an upper cover. The upper cover and the inner tube are respectively located at two ends of the outer tube. The front fork spring is arranged in the outer tube and abuts between the inner tube and the upper cover. When the front fork shock absorber is compressed, the inner tube is pressed upward towards the inside of the outer tube and compresses the front fork spring. When the front fork shock absorber rebounds, the inner tube moves downward away from the inside of the outer tube and releases the front fork spring.

[0003] In order to prevent the front fork spring from being compressed by vibration, the user usually increases the preload on the front fork spring. Specifically, the user can rotate the upper cover to compress the front fork spring closer to the inner tube. However, the existing front fork shock absorber is usually installed in the vehicle shell. If the user wants to adjust the preload, the user needs to disassemble the vehicle shell to adjust the upper cover, which is very inconvenient.

[0004] Therefore, a better improvement scheme is proposed to solve the above-mentioned problems. TECHNICAL PROBLEM

[0005] The utility model mainly aims at providing a front fork shock absorber and an oil pressure adjusting device thereof, which are used to solve the problem that the existing front fork shock absorber is usually installed in the vehicle shell, and if the user wants to adjust the preload, the user needs to disassemble the vehicle shell to adjust the upper cover, which is inconvenient to adjust.

[0006] To achieve the above-mentioned purpose, the oil pressure adjusting device is arranged on a front fork shock absorber, and the front fork shock absorber has an outer tube, an inner tube and a front fork spring. The inner tube is movably arranged in one end of the outer tube, and the front fork spring is arranged in the outer tube. The oil pressure adjusting device has:

[0007] A preload adjusting mechanism is arranged on the other end of the outer tube relative to the inner tube and has:

[0008] A preload adjusting housing is arranged on the outer tube and has a preload internal space;

[0009] A preload adjusting part is movably arranged in the preload internal space and protrudes out of the preload internal space and is connected to one end of the front fork spring;

[0010] A connecting pipe is connected to the preload adjusting mechanism at one end, and the connecting pipe is communicated with the preload internal space of the preload adjusting housing;

[0011] An oil pressure adjusting mechanism is provided at the other end of the connecting pipe relative to the preload adjusting mechanism, and has:

[0012] An oil pressure adjusting housing has an oil pressure internal space;

[0013] An oil pressure adjusting member is provided on the oil pressure adjusting housing and can adjust the size of the oil pressure internal space;

[0014] A working fluid is flowably filled in the preload internal space, the connecting pipe and the oil pressure internal space, and the preload adjusting member can be pushed by the working fluid when the oil pressure adjusting member compresses the oil pressure internal space.

[0015] The oil pressure adjusting device as described above, wherein the preload adjusting housing has:

[0016] An inner cap is located in the outer pipe, and the preload internal space is located in the inner cap;

[0017] An outer cap is detachably connected to the inner cap and is in communication with the connecting pipe and the preload internal space.

[0018] The oil pressure adjusting device as described above, wherein the outer cap and the inner cap are relatively rotatable, and the outer cap and the inner cap remain in communication when the outer cap and the inner cap are relatively rotated.

[0019] The oil pressure adjusting device as described above, wherein,

[0020] The inner cap has:

[0021] A ring groove is provided on a side of the inner cap close to the outer cap;

[0022] At least one inner preload passage is in communication with the ring groove and the preload internal space;

[0023] The outer cap has:

[0024] At least one outer preload passage is in communication with the connecting pipe and the ring groove.

[0025] The oil pressure adjusting device as described above, wherein the preload adjusting mechanism has:

[0026] A sealing member is provided between the preload adjusting housing and the outer pipe and is sealingly fitted to the preload adjusting housing and the outer pipe.

[0027] The oil pressure adjusting device as described above, wherein the oil pressure adjusting member has:

[0028] An oil pressure adjusting shaft penetrates one end of the oil pressure adjusting housing;

[0029] An oil pressure moving member is screwed on the oil pressure adjusting shaft and located in the oil pressure internal space, and can move along the axial direction of the oil pressure adjusting shaft with the rotation of the oil pressure adjusting shaft.

[0030] The oil pressure adjusting device as described above, wherein

[0031] A manual knob is sleeved on the oil pressure adjusting shaft and can rotate the oil pressure adjusting shaft.

[0032] The front fork shock absorber has the following advantages:

[0033] An outer tube;

[0034] An inner tube is movably arranged in one end of the outer tube;

[0035] A front fork spring is arranged in the outer tube;

[0036] An oil pressure adjusting device is arranged on the outer tube and has

[0037] A preload adjusting mechanism is arranged on the other end of the outer tube relative to the inner tube and has

[0038] A preload adjusting housing is arranged on the outer tube and has a preload internal space;

[0039] A preload adjusting member is movably arranged in the preload internal space and protrudes out of the preload internal space and is connected to one end of the front fork spring;

[0040] A connecting pipe is connected to the preload adjusting mechanism at one end, and the connecting pipe is communicated with the preload internal space of the preload adjusting housing;

[0041] An oil pressure adjusting mechanism is arranged on the other end of the connecting pipe relative to the preload adjusting mechanism and has

[0042] An oil pressure adjusting housing has an oil pressure internal space;

[0043] An oil pressure adjusting member is arranged on the oil pressure adjusting housing and can adjust the size of the oil pressure internal space;

[0044] A working fluid is flowably filled in the preload internal space, the connecting pipe and the oil pressure internal space, and the oil pressure adjusting member can push the preload adjusting member through the working fluid when the oil pressure internal space is compressed.

[0045] The utility model discloses a front fork shock absorber and preloading adjustment mechanism are installed in the car shell, and the connecting pipe connected with the preloading adjustment mechanism is pulled out the car shell and makes the oil pressure adjustment mechanism of the other end of connecting pipe set up in the car shell outside. When the user wants to compress the front fork spring, will adjust the oil pressure moving piece and compress the oil pressure internal space along the axial movement of oil pressure adjustment shaft. At this time, working fluid will extrude from the oil pressure internal space to the preloading internal space, and expand the preloading internal space, and push the preloading adjustment piece and compress the front fork spring. Therefore, the user can adjust the oil pressure adjustment piece under the condition of not disassembling the car shell, and push the preloading adjustment piece and compress the front fork spring by the change of oil pressure. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is the perspective drawing of the utility model;

[0047] Figure 2 It is the sectional view of the utility model;

[0048] Figure 3 It is the perspective drawing of a preloading adjustment mechanism when the front fork spring of the utility model is elongated;

[0049] Figure 4 It is the perspective drawing of the preloading adjustment mechanism when the front fork spring of the utility model is compressed;

[0050] Figure 5 It is the perspective drawing of an oil pressure adjustment mechanism when the front fork spring of the utility model is compressed;

[0051] Figure 6 It is the perspective drawing of the oil pressure adjustment mechanism when the front fork spring of the utility model is elongated;

[0052] Figure 7 It is the partial exploded view of the utility model;

[0053] Figure 8 It is the exploded view of a preloading adjustment casing of the utility model. DETAILED DESCRIPTION

[0054] Please refer to Figure 1 And Figure 2 The utility model provides a front fork shock absorber, it has a outer tube 10, an inner tube 20, a front fork spring 30 and an oil pressure adjustment device 40. The inner tube 20 is movably arranged in one end of the outer tube 10. The front fork spring 30 is arranged in the outer tube 10. The oil pressure adjustment device 40 is connected to the other end of the outer tube 10 relative to the inner tube 20, and the front fork spring 30 is arranged between the inner tube 20 and the oil pressure adjustment device 40.

[0055] Please refer to Figures 1 to 3The oil pressure adjusting device 40 has a preload adjusting mechanism 41, a connecting pipe 42, an oil pressure adjusting mechanism 43, and a working fluid 44. The preload adjusting mechanism 41 is arranged at the other end of the outer pipe 10 relative to the inner pipe 20, and has a preload adjusting housing 411, a preload adjusting member 412, and a sealing member 413.

[0056] Please refer to Figure 3 , Figure 7 and Figure 8 . The preload adjusting housing 411 is arranged on the outer pipe 10, and has a preload inner space. In this embodiment, the preload adjusting housing 411 has an inner cover 4111 and an outer cover 4112. The inner cover 4111 is located in the outer pipe 10, and the preload inner space is located in the inner cover 4111. The inner cover 4111 has a ring groove 4113 and at least one inner preload passage 4114. The ring groove 4113 is arranged on the inner cover 4111 close to the outer cover 4112, and the inner preload passage 4114 is communicated with the ring groove 4113 and the preload inner space.

[0057] The outer cover 4112 is detachably connected to the inner cover 4111, and is communicated with the connecting pipe 42 and the preload inner space. The outer cover 4112 is relatively rotatable with the inner cover 4111, and has at least one outer preload passage 4115. The outer preload passage 4115 is communicated with the connecting pipe 42 and the ring groove 4113. When the outer cover 4112 is relatively rotated with the inner cover 4111, the outer preload passage 4115 is communicated with the ring groove 4113 even if the outer cover 4112 is rotated, so that the outer cover 4112 can keep communication with the inner cover 4111.

[0058] The preload adjusting member 412 is movably arranged in the preload inner space, and protrudes out of the preload inner space, and is connected to one end of the front fork spring 30. The sealing member 413 is arranged between the preload adjusting housing 411 and the outer pipe 10, and is sealingly fitted to the preload adjusting housing 411 and the outer pipe 10.

[0059] Please refer to Figure 5 . The oil pressure adjusting mechanism 43 is arranged at the other end of the connecting pipe 42 relative to the preload adjusting mechanism 41, and has an oil pressure adjusting housing 431 and an oil pressure adjusting member 432. The oil pressure adjusting housing 431 has an oil pressure inner space. The oil pressure adjusting member 432 is arranged on the oil pressure adjusting housing 431, and can adjust the size of the oil pressure inner space. In this embodiment, the oil pressure adjusting member 432 has an oil pressure adjusting shaft 4321, an oil pressure moving member 4322, and a manual knob 4323.

[0060] The oil pressure adjusting shaft 4321 penetrates one end of the oil pressure adjusting housing 431. The oil pressure moving member 4322 is screwed on the oil pressure adjusting shaft 4321 and is located in the oil pressure interior space and can move along the axial direction of the oil pressure adjusting shaft 4321 with the rotation of the oil pressure adjusting shaft 4321. The manual knob 4323 is sleeved on the oil pressure adjusting shaft 4321 and can rotate the oil pressure adjusting shaft 4321. In other embodiments, the oil pressure adjusting member 432 can also not have the manual knob 4323, and the oil pressure adjusting shaft 4321 is rotated by using a tool, and thereby the size of the oil pressure interior space is adjusted.

[0061] The working fluid 44 is flowably filled in the preload interior space, the connecting pipe 42 and the oil pressure interior space, and the preload adjusting member 412 is pushed by the working fluid 44 when the oil pressure adjusting member 432 compresses the oil pressure interior space.

[0062] In use, the front fork shock absorber and the preload adjusting mechanism 41 are installed in the vehicle shell, and the connecting pipe 42 connected with the preload adjusting mechanism 41 is pulled out of the vehicle shell, so that the oil pressure adjusting mechanism 43 at the other end of the connecting pipe 42 is arranged outside the vehicle shell. Please refer to Figure 4 and Figure 5 When the user wants to compress the front fork spring 30, the manual knob 4323 is rotated or the oil pressure adjusting shaft 4321 is rotated by using a tool, so that the oil pressure moving member 4322 moves along the axial direction of the oil pressure adjusting shaft 4321 and compresses the oil pressure interior space. At this time, the working fluid 44 starts from the oil pressure interior space, sequentially passes through the connecting pipe 42, the outer preload passage 4115 of the outer pipe 10, the ring groove 4113 of the inner cover 4111, the inner preload passage 4114 of the inner cover 4111, flows to the preload interior space, and expands the preload interior space and pushes the preload adjusting member 412 to compress the front fork spring 30. Please refer to Figure 3 and Figure 6 If the front fork spring 30 is to be extended, the manual knob 4323 is reversely rotated or the oil pressure adjusting shaft 4321 is reversely rotated by using a tool, so that the oil pressure moving member 4322 moves along the axial direction of the oil pressure adjusting shaft 4321 and expands the oil pressure interior space. At this time, the working fluid 44 reversely flows back to the oil pressure interior space from the preload interior space due to the decrease of the oil pressure interior space, thereby reducing the pressure on the front fork spring 30.

[0063] The advantage of the utility model lies in that the oil pressure adjusting mechanism 43 for controlling the compression of the front fork spring 30 is arranged outside the vehicle shell through the connecting pipe 42, so that the user can adjust the oil pressure adjusting member 432 without disassembling the vehicle shell, and the preload adjusting member 412 is pushed to compress the front fork spring 30 by the change of the oil pressure.

[0064] The above merely is preferred embodiment of the present application and does not limit the present application in any form, although the present application has been disclosed as above with the preferred embodiment, however, is not used to limit the present application, any skilled person in the art, without departing from the scope of the technical scheme of the present application, can make some changes or modifications to the above disclosed technical content for equivalent embodiments of equivalent changes, but as long as the content of the technical scheme of the present application is not deviated, according to the technical essence of the present application, any simple modification, equivalent change and modification of the above embodiments are still within the scope of the technical scheme of the present application.

Claims

1. An oil pressure adjusting device characterized by comprising: An oil pressure adjusting device is provided on a front fork shock absorber having an outer tube, an inner tube movably inserted into one end of the outer tube, and a front fork spring provided in the outer tube. The oil pressure adjusting device has: a preload adjusting mechanism provided on the other end of the outer tube relative to the inner tube, and having: a preload adjusting housing provided on the outer tube and having a preload internal space; a preload adjusting member movably provided in the preload internal space and protruding out of the preload internal space, and connected to one end of the front fork spring; a connecting tube connected to the preload adjusting mechanism at one end, and communicating with the preload internal space of the preload adjusting housing; an oil pressure adjusting mechanism provided on the other end of the connecting tube relative to the preload adjusting mechanism, and having: an oil pressure adjusting housing having an oil pressure internal space; an oil pressure adjusting member provided on the oil pressure adjusting housing and capable of adjusting the size of the oil pressure internal space; a working fluid flowably filled in the preload internal space, the connecting tube, and the oil pressure internal space, and capable of pushing the preload adjusting member by the working fluid when the oil pressure adjusting member compresses the oil pressure internal space.

2. The hydraulic adjusting device according to claim 1, wherein The preload adjusting housing has: an inner cap located in the outer tube and having the preload internal space therein; an outer cap detachably connected to the inner cap and communicating with the connecting tube and the preload internal space.

3. The hydraulic adjusting device according to claim 2, wherein The outer cap and the inner cap are relatively rotatable, and the outer cap and the inner cap remain in communication when the outer cap and the inner cap are relatively rotated.

4. The oil pressure adjusting device according to claim 3, wherein the inner cap has: a ring groove provided on a surface of the inner cap close to the outer cap; at least one inner preload passage communicating with the ring groove and the preload internal space; the outer cap has: at least one outer preload passage communicating with the connecting tube and the ring groove.

5. The hydraulic adjusting device according to any one of claims 1 to 4, characterized by The preload adjusting mechanism has: a sealing member provided between the preload adjusting housing and the outer tube, and sealingly fitted to the preload adjusting housing and the outer tube.

6. The oil pressure adjusting device according to any one of claims 1 to 4, characterized by The oil pressure adjusting member has: an oil pressure adjusting shaft penetrating one end of the oil pressure adjusting housing; an oil pressure moving member threadedly provided on the oil pressure adjusting shaft and located in the oil pressure internal space, and capable of moving along the axial direction of the oil pressure adjusting shaft with the rotation of the oil pressure adjusting shaft.

7. The oil pressure adjusting device according to claim 6, wherein a manual knob is sleeved on the oil pressure adjusting shaft and capable of rotating the oil pressure adjusting shaft.

8. A front fork shock absorber characterized by comprising: It has: an outer tube; an inner tube movably inserted into one end of the outer tube; a front fork spring provided in the outer tube; an oil pressure adjusting device provided on the outer tube and having a preload adjusting mechanism provided on the other end of the outer tube relative to the inner tube, and having: a preload adjusting housing provided on the outer tube and having a preload internal space; a preload adjusting member movably provided in the preload internal space and protruding out of the preload internal space, and connected to one end of the front fork spring; a connection pipe having one end connected to the preload adjustment mechanism and communicating with the preload internal space of the preload adjustment housing; an oil pressure adjustment mechanism provided at the other end of the connection pipe relative to the preload adjustment mechanism and having: an oil pressure adjustment housing having an oil pressure internal space; an oil pressure adjustment member provided on the oil pressure adjustment housing and capable of adjusting the size of the oil pressure internal space; a working fluid flowably filled in the preload internal space, the connection pipe, and the oil pressure internal space, the working fluid being capable of pushing the preload adjustment member when the oil pressure adjustment member compresses the oil pressure internal space.

Images