CN-224201033-U - Multichannel condition dynamic adjustment front fork shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, in particular to a multichannel dynamic adjusting front fork shock absorber which has the advantages of simple structure, sensitive response and capability of automatically switching damping characteristics under different compression/rebound speeds so as to realize dynamic self-adaptive adjustment of various road conditions, wherein the piston comprises a piston body, a main valve plate, an auxiliary valve plate and a return spring, the central axis of the piston body is provided with a hole slot for a second sleeve to pass through, the axial direction of the piston body is provided with four main oil holes and four auxiliary oil holes, the main oil hole is opened and closed by a main valve piece, the auxiliary oil hole is a stepped variable cross section channel, an elastic throttling element is arranged in the auxiliary oil hole, the main valve piece is covered on one side of the piston body, the main oil hole is blocked in a normal state, so that the shock absorber presents soft damping when moving at a low speed and presents hard damping when moving at a high speed, and the auxiliary valve piece is arranged on the other side of the piston body through a reset spring and provides symmetrical rebound damping adjustment in a rebound stroke.

Inventors

• WU JINZHONG
• YAN BAOHUI

Assignees

• 泉州市博汉机械股份有限公司

Dates

Publication Date

20260505

Application Date

20260324

Claims (6)

1. 1. A multichannel condition dynamic adjustment front fork bumper shock absorber, its characterized in that: comprises a hydraulic cylinder, a first sleeve, a second sleeve, a piston, a first spring, a second spring, a first bushing, a first sealing cover, a second sealing cover and an adjusting device, wherein the first sealing cover is arranged at the upper end of the hydraulic cylinder, the adjusting device is arranged at the lower part of the hydraulic cylinder, the first sleeve penetrates through the hydraulic cylinder, the upper end of the first sleeve penetrates through the first sealing cover to extend outwards, the second sealing cover is arranged at the upper end of the first sleeve, a first communication hole is arranged at the lower part of the first sleeve and is positioned in the hydraulic cylinder, the second sleeve penetrates through the first sleeve, the lower end of the second sleeve penetrates out of the first sleeve and is connected with the adjusting device, a supporting ring is arranged at the upper end of the second sleeve, the piston is arranged on the second sleeve and is distributed in the first sleeve, the piston comprises a piston body, a main valve plate, an auxiliary valve plate and a return spring, wherein a hole through which a second sleeve passes is formed in the central axis of the piston body, four main oil holes and four auxiliary oil holes are formed in the axial direction of the piston body, the diameter of each main oil hole is 1.6 mm-2.0 mm, the main oil holes are controlled to open and close by the main valve plate, the auxiliary oil holes are stepped variable cross-section channels, the inlet diameter of each auxiliary oil hole is 0.4 mm-0.8 mm, the outlet diameter of each auxiliary oil hole is 1.0 mm-1.4 mm, an elastic throttling element is arranged in each auxiliary oil hole, the main valve plate covers one side of the piston body, the main oil holes are blocked in a normal state, so that the shock absorber presents soft damping during low-speed movement and hard damping during high-speed movement, the auxiliary valve plate is arranged on the other side of the piston body through the return spring, symmetrical rebound damping adjustment is provided in rebound stroke, the upper portion of second telescopic just is located first telescopic and is equipped with second intercommunicating pore, third intercommunicating pore and fourth intercommunicating pore respectively, second intercommunicating pore, third intercommunicating pore and fourth intercommunicating pore distribute in the downside of piston, the telescopic lower part of second is equipped with two fifth intercommunicating pores, first bush is located between first sleeve and the second sleeve to distribute in the downside of piston, first spring wears to locate in the first sleeve to the both ends of first spring are supported respectively on second seal cover and holding ring, the second spring overlaps and is located the second sleeve to the both ends of second spring are connected with holding ring and piston respectively, form first appearance chamber through second seal cover, first sleeve, second sleeve, piston and adjusting device, form second appearance chamber through first seal cover, hydraulic cylinder, first sleeve, second sleeve and piston, all fill in first appearance chamber, second appearance intracavity have damping oil, adjust the velocity of flow of damping oil business turn over, play first appearance chamber through adjusting device.
2. 2. The multi-channel condition dynamic adjustment front fork shock absorber of claim 1, further comprising connecting plates, wherein the connecting plates are distributed along the axial direction of the hydraulic cylinder, the two axial ends of the connecting plates are locked on the hydraulic cylinder through bolts, a first connecting hole and a second connecting hole are respectively arranged in the middle of the connecting plates, and the central axes of the first connecting hole and the second connecting hole are vertically distributed with the orthographic projection of the central axis of the hydraulic cylinder.
3. 3. The multi-channel condition dynamic adjustment front fork damper of claim 1, wherein the elastic throttling element is a silica gel ring or a porous rubber pad.
4. 4. The dynamically adjusting front fork damper according to claim 1, wherein the stepped transition section of the auxiliary oil hole is provided with an inclined conical surface to guide smooth transition of oil and reduce turbulence noise.
5. 5. The multi-channel dynamic adjusting front fork damper according to any one of claims 1 to 4, wherein the adjusting device comprises an adjusting seat and an adjusting rod, the adjusting seat is fixedly arranged on the hydraulic cylinder, an adjusting hole is formed in the adjusting seat along the axial direction of the hydraulic cylinder, the lower end of the second sleeve is embedded in the adjusting hole, the adjusting rod penetrates through the adjusting hole and is in rotary connection with the adjusting seat, an external thread is arranged on the adjusting rod, and the upper portion of the adjusting rod is embedded in the second sleeve and is in threaded connection with the second sleeve.
6. 6. The multi-path dynamically adjusting front fork damper according to claim 5, wherein the distance between the second communication hole and the piston is smaller than the distance between the third communication hole and the piston, and the distance between the third communication hole and the piston is smaller than the distance between the fourth communication hole and the piston.

Description

Multichannel condition dynamic adjustment front fork shock absorber Technical Field The utility model relates to the technical field of shock absorbers, in particular to a multichannel condition dynamic adjustment front fork shock absorber. Background The application discloses a motorcycle front fork shock absorber, which is characterized in that the upper end of a first sleeve is arranged on a fork shoulder of a motorcycle front fork, a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat of a hydraulic cylinder are connected with a motorcycle body through mounting, and meanwhile, the third mounting seat and the fourth mounting seat are connected through a connecting plate, so that the shock absorber is good in connection firmness with the motorcycle, the mounting seat on the hydraulic cylinder is arranged, impact and vibration generated in the running process of the motorcycle can be balanced to act on the hydraulic cylinder, the connection strength of the hydraulic cylinder and the mounting seat is improved, and the problem of fracture caused by larger impact is avoided. Some high-end products introduce an electronic control valve or a variable aperture structure, but have high cost, complex structure and low reliability. Disclosure of utility model Therefore, aiming at the problems, the utility model provides the dynamically-adjusted front fork shock absorber which has a simple structure and is sensitive to respond to multiple paths of conditions, and the damping characteristics can be automatically switched under different compression/rebound speeds, so that the dynamically-adaptive adjustment of multiple road conditions is realized. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a multichannel condition dynamic adjustment front fork shock absorber, includes hydraulic cylinder, first sleeve, second sleeve, piston, first spring, second spring, first bush, first sealing cover, second sealing cover and adjusting device, first sealing cover is located the upper end of hydraulic cylinder, adjusting device locates the lower part of hydraulic cylinder, first sleeve wears to locate in the hydraulic cylinder to the upper end of first sleeve passes first sealing cover outwards extends, the upper end of first sleeve is located to the second sealing cover, the lower part of first sleeve just is located the hydraulic cylinder and is equipped with a first communication hole, the second sleeve wears to locate in the first sleeve, the lower extreme of second sleeve wears out first sleeve and is connected with adjusting device, the upper end of second sleeve is equipped with the supporting ring, the piston is located on the second sleeve to be distributed in the first sleeve, the piston comprises a piston body, a main valve plate, an auxiliary valve plate and a return spring, a hole through which a second sleeve passes is formed in the central axis of the piston body, four main oil holes and four auxiliary oil holes are formed in the axial direction of the piston body, the diameter of each main oil hole is 1.6 mm-2.0 mm, the main oil holes are opened and closed under the control of the main valve plate, the auxiliary oil holes are stepped variable cross-section channels, the inlet diameter of each auxiliary oil hole is 0.4 mm-0.8 mm, the outlet diameter of each auxiliary oil hole is 1.0 mm-1.4 mm, an elastic throttling element is arranged in each auxiliary oil hole, the main valve plate covers one side of the piston body, the main oil holes are blocked under normal conditions, so that the shock absorber presents soft damping during low-speed movement and hard damping during high-speed movement, the auxiliary valve plate is arranged on the other side of the piston body through the return spring, symmetrical rebound damping adjustment is provided in rebound stroke, and the upper part of the second sleeve is provided with second communication holes, the auxiliary valve plates and the elastic throttling elements are respectively arranged in the first sleeve The third communication hole and the fourth communication hole, second communication hole, third communication hole and fourth communication hole distribute in the downside of piston, the telescopic lower part of second is equipped with two fifth communication holes, first bush is located between first sleeve and the second sleeve to distribute in the downside of piston, first spring wears to locate in the first sleeve, and the both ends of first spring are supported respectively on second seal cover and holding ring, the second spring overlaps on the second sleeve to the both ends of second spring are connected with holding ring and piston respectively, form first appearance chamber through second seal cover, first sleeve, second sleeve, piston and adjusting device, form the second appearance chamber through first seal cover, hydropot, first slee