TWM565651U - Vehicle shock absorber - Google Patents

Abstract

A vehicle shock absorber includes an outer tube, an inner tube fixed in the outer tube, a fork tube slidably disposed between the outer tube and the inner tube, and a fork tube disposed at the top of the fork tube a control mechanism, a check valve mechanism, and a damping mechanism disposed at the bottom end of the one-way valve mechanism and located in the inner tube. Through the cooperation of the control mechanism, the one-way valve mechanism and the damping mechanism, the damping control of the vehicle shock absorber is instantaneous, continuous and uninterrupted, and facilitates continuous pressure and holding pressure. Thereby improving the actuation reaction time and control performance.

Description

Vehicle shock absorber

The present invention relates to a cushioning device, and more particularly to a shock absorber for a vehicle.

Referring to FIG. 1 , a general vehicle shock absorber includes an outer tube 11 , an inner tube 12 fixed in the outer tube 11 , and a fork tube slidably disposed between the outer tube 11 and the inner tube 12 . 13, and a sleeve 14 disposed between the inner tube 12 and the fork tube 13 and drivable by the fork tube 13. The outer tube 11, the inner tube 12 and the sleeve 14 cooperate to define a lower side oil chamber 15. The inner tube 12, the fork tube 13 and the sleeve 14 cooperate to define an upper side oil chamber 16. The inner tube 12 has a plurality of lower lateral holes 121 formed on the outer peripheral surface and communicating with the lower oil chamber 15, and is formed on the outer peripheral surface and located above the lower lateral holes 121, and communicates with the upper oil The upper lateral opening 122 of the chamber 16.

The outer tube 11 and the inner tube 12 are filled with hydraulic oil. When the vehicle runs on a bumpy road surface or the locomotive bends and bends, the outer tube 11 and the fork tube 13 are relatively displaced due to compression or stretching. Thereby driving the sleeve 14 to push hydraulic oil to flow in the outer tube 11, the inner tube 12, the lower side oil chamber 15 and the upper side oil chamber 16, thereby generating compression and tensile damping force to absorb vibration, and Provides support and maintains corner stability. However, such a structure is inconvenient to adjust the damping force, so that the optimal suspension configuration cannot be adjusted according to the road surface condition and the driver's preference, and the ride comfort and handling of the driver cannot be effectively improved.

Therefore, the object of the present invention is to provide a vehicle shock absorber that can regulate hydraulic oil.

Therefore, the vehicle shock absorber of the present invention comprises an outer tube, an inner tube fixed in the outer tube, a fork tube slidably disposed between the outer tube and the inner tube, and a fork tube disposed on the fork a control mechanism at the top of the tube, a check valve mechanism, and a damping mechanism disposed at the bottom end of the check valve mechanism and located in the inner tube.

The control mechanism communicates with the fork pipe and is adapted to pass the hydraulic oil to regulate the flow of the hydraulic oil. The check valve mechanism includes a shaft tube disposed in the fork tube and communicating with the control mechanism, and a valve block movably disposed in the shaft tube, the shaft tube communicating with the control mechanism The hydraulic oil can be introduced into the control mechanism from the shaft tube, and the valve block is adapted to be pushed upward by the hydraulic oil to allow hydraulic oil to enter the shaft tube, and the hydraulic oil cannot flow out of the shaft tube in a reverse direction. The damping mechanism is disposed at the bottom end of the one-way valve mechanism and located in the inner tube, and is configured to continuously pass hydraulic oil in one direction. When the fork tube is compressed relative to the outer tube, the hydraulic oil passes through the damper mechanism and then pushes the valve block to continuously flow into the shaft tube. When the fork tube is stretched relative to the outer tube, the upper portion of the damper mechanism The hydraulic oil directly pushes the valve block to continue into the shaft tube.

The effect of the novel is that the control mechanism is arranged on the top to facilitate the adjustment of the damping force. The hydraulic oil in the shaft tube can be adjusted to generate a damping force after entering the control mechanism upwards. Through the design of the present invention, when the compression is performed, the hydraulic oil can pass upward through the damping mechanism and push the valve block to enter the In the shaft tube, when the stretching is performed, the hydraulic oil above the damping mechanism directly pushes the valve block into the shaft tube, so that the hydraulic oil can be replenished into the shaft tube when compressed or stretched, and then Through the valve block, the hydraulic oil can not flow downwardly to the shaft tube, so that the shaft tube is filled with hydraulic oil at any time and can be actuated immediately, so that continuous and uninterrupted damping control can be generated to increase the speed of the actuation reaction.

Referring to FIG. 2 and FIG. 3, in one embodiment of the vehicle shock absorber 2 of the present invention, the vehicle shock absorber 2 of the present embodiment is disposed in the up and down direction, and is described herein, but of course, the vehicle shock absorber 2 is also visible. The situation is inclined or configured in other directions, and should not be limited to this. The vehicle shock absorber 2 includes an outer tube 21, an inner tube 22 fixed in the outer tube 21, and a fork tube 23 disposed between the outer tube 21 and the inner tube 22 so as to be slidably downward. a control mechanism 24 disposed at the top of the fork tube 23, a check valve mechanism 25 disposed at the bottom of the control mechanism 24, and a damping mechanism 26 disposed at the bottom end of the check valve mechanism 25 and located in the inner tube 22 . The outer tube 21 and the inner tube 22 cooperate to define an oil chamber 31. The inner tube 22 forms a plurality of upper communication holes 221 communicating with the oil chamber 31 in the radial direction at the top, and forms a plurality of lower communication holes 222 communicating with the oil chamber 31 in the radial direction at the bottom. The control mechanism 24 includes a fixing portion 241 fixed to the top of the fork tube 23 and closing the fork tube 23, and a downwardly tapered tapered adjustment from the fixing portion 241 to the fork tube 23 The portion 242 and a seat portion 243 that connects the bottom end of the fixing portion 241 and surrounds the adjusting portion 242. The seat portion 243 defines a communication space 244 for receiving the adjustment portion 242, a regulation hole 245 extending downwardly for the adjustment portion 242 to extend and communicate with the communication space 244, and a diameter along the fork tube 23. A through hole 246 extending in the direction and communicating with the communication space 244. The tip end of the adjusting portion 242 extends into the regulating hole 245 but does not close the regulating hole 245. After the hydraulic oil can pass through the regulating hole 245 and the communication space 244, the through hole 246 flows out. In the foregoing process, The hydraulic oil flows through the tapered adjustment portion 242, and the flow rate is changed by the adjustment portion 242 to generate a damping force.

The check valve mechanism 25 includes a shaft tube 251 that is inserted into the seat portion 243 of the control mechanism 24 and located in the fork tube 23, and a valve block that is slidably disposed in the shaft tube 251. 252. The shaft tube 251 cooperates with the fork tube 23 to define a through hole 246 that communicates with the control mechanism 24 and a surrounding space 32 that communicates with the hole 221 above the inner tube 22. The shaft tube 251 defines a first oil passage 253 extending in the axial direction and communicating with the regulating hole 245 and disposed for the valve block 252, and connecting the first oil passage 253 and having a diameter smaller than the first oil passage 253 The second oil passage 254 that the valve block 252 cannot enter, and a plurality of lateral holes 255 that open in the radial direction and communicate with the second oil passage 254 and the oil chamber 31. The valve block 252 is adapted to be pushed upward by the hydraulic oil to move from a closed position to an open position along the first oil passage 253 relative to the shaft tube 251. When the valve block 252 is in the closed position, the valve block 252 closes the second oil passage 254, so that hydraulic oil cannot enter the second oil passage 254 from the first oil passage 253, thereby being unable to pass the shaft tube 251. Flow out. When the valve block 252 is in the open position, it no longer closes the second oil passage 254, so that hydraulic oil can pass upward through the first oil passage 253 and enter the regulating hole 245. Conversely, the hydraulic oil cannot push the valve block 252 downward, and the valve block 252 moves downward due to its own weight when it is not pushed by the hydraulic oil to reset to the closed position, so that the one-way flow of the hydraulic oil can be controlled. The effect.

The damper mechanism 26 includes a piston 262 fixed to the bottom end of the shaft tube 251 and located in the inner tube 22 and defining a plurality of communication grooves 261. The piston 262 is fixed to the inner wall surface of the inner tube 22 and is disposed through the shaft tube 251. a sleeve 263 located above the piston 262, a valve piece 264 disposed on the shaft tube 251 and located between the piston 262 and the sleeve 263, and a valve piece 264 disposed above the valve piece 264 The blocking piece 265 has a spring 266 which is respectively abutted against the sleeve 263 and the blocking piece 265, and a spring piece 267 which is respectively abutted against the valve piece 264 and the blocking piece 265. In the present embodiment, the communication slots 261 communicate with the inner tube 22 and the lateral holes 255, and the number is four, but may be other quantities depending on the throughput requirement, and should not be limited thereto. The spring 266 pushes the flap 265 downwardly, and the flap 265 is pressed down against the elastic piece 267. The elastic piece 267 is pressed down against the valve piece 264, so that the valve piece 264 abuts against the piston 262 to close the The communication groove 261 is connected to the inner tube 22 so as not to communicate with the lateral holes 255. When the valve piece 264 is pushed upward by the hydraulic oil, the elastic piece 267 is compressed and the valve piece 264 is no longer closed by the communication groove 261, so that the hydraulic oil can flow from the inner tube 22 through the communication grooves 261 into the sides. Into the hole 255. Similarly, the hydraulic oil cannot push the valve piece 264 downward, so that it cannot flow out from the shaft tube 251, and the effect of controlling the one-way flow of the hydraulic oil can be achieved.

Referring to FIG. 2, FIG. 3, and FIG. 4, the hydraulic oil filled in the space 32, the oil level 33 is preferably higher than the valve block 252 of the check valve mechanism 25 and the damping mechanism 26, so as to be transparent. The oil re-stabilizes the valve block 252 and the damping mechanism 26 to improve structural stability. The hydraulic oil in the shaft tube 251 is filled to a level close to the through hole 246 after the first operation. When the embodiment is compressed, the hydraulic oil in the inner tube 22 pushes the valve piece 264 upward and enters the lateral holes 255, and pushes the valve block 252 upward through the second oil passage 254 to enter the The first oil passage 253 of the shaft tube 251 is inside. Then, the hydraulic oil in the shaft tube 251 passes upward through the regulating hole 245, and flows through the adjusting portion 242 to flow into the surrounding space 32 through the through hole 246, and regulates the flow of the hydraulic oil to generate compression in the foregoing process. Side damping force. The other portion of the hydraulic oil enters the oil chamber 31 from the lower communication holes 222, and then enters the surrounding space 32 from the upper communication holes 221. When stretched, the hydraulic oil contained in the shaft tube 251 cannot flow downward due to the valve block 252 closing the second oil passage 254 of the shaft tube 251, and the hydraulic oil in the surrounding space 32 passes through the upper communication. The hole 221 flows into the oil chamber 31, and the hydraulic oil in the oil chamber 31 flows into the inner tube 22 through the lower communication hole 222. Specifically, at this time, between the piston 262 and the sleeve 263 The distance is reduced during stretching so that hydraulic oil between the two is squeezed into the second flow passage 254 from the lateral holes 255, thereby pushing the valve block 252 upward into the shaft tube 251. And after entering the regulation hole 245 again, the flow rate is controlled by the adjustment portion 242 to generate a tensile side damping force.

The hydraulic oil in the shaft tube 251 can be adjusted to generate a damping force after entering the control mechanism 24 upwards. Through the design of the present invention, when the compression is performed, the hydraulic oil can pass upward through the damping mechanism 26 and push the valve block 252. To continuously flow into the shaft tube 251, when the stretching is performed, the hydraulic oil between the piston 262 and the sleeve 263 directly pushes the valve block 252 and continuously flows into the shaft tube 251, so whether it is compressed or pulled When the air is extended, the hydraulic oil can be replenished into the shaft tube 251, and the hydraulic oil can not flow out of the shaft tube 251 through the valve block 252, so that the shaft tube 251 is filled with hydraulic oil at any time and can be actuated immediately. A damping force is generated, which produces a continuous, uninterrupted damping control that increases the speed of the actuation reaction (also known as responsiveness) and ride comfort.

In summary, the present invention performs speed regulation and flow direction control through the control mechanism 24, the check valve mechanism 25, and the damper mechanism 26, thereby improving the actuation reaction speed, riding comfort, and handling, so that the present invention can be achieved. The purpose of the new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧Vehicle Shock Absorber
21‧‧‧External management
22‧‧‧Inside
221‧‧‧Connected hole
222‧‧‧Under the communication hole
23‧‧‧ fork tube
24‧‧‧Control agency
241‧‧‧ Fixed Department
242‧‧‧Adjustment Department
243‧‧‧ body
244‧‧‧Connected space
245‧‧‧Control holes
246‧‧‧through hole
25‧‧‧ check valve mechanism
251‧‧‧ shaft tube
252‧‧‧Valve block
253‧‧‧First oil passage
254‧‧‧Second oil channel
255‧‧‧ lateral holes
26‧‧‧damper mechanism
261‧‧‧Connecting slot
262‧‧‧Piston
263‧‧‧ sleeve
264‧‧‧ valve
265‧‧ ‧Flap
266‧‧ ‧ spring
267‧‧‧Shrap
31‧‧‧ oil room
32‧‧‧ Around the space
33‧‧‧ oil noodles

Other features and advantages of the present invention will be apparent from the embodiments of the drawings, wherein: Figure 1 is a cross-sectional view illustrating a conventional vehicle shock absorber; Figure 2 is a cross-sectional view showing the vehicle of the present invention FIG. 3 is a partial cross-sectional view for explaining a partially enlarged view of FIG. 2; and FIG. 4 is a cross-sectional view showing a state in which the embodiment is activated.

Claims (5)

A vehicle shock absorber, suitable for filling hydraulic oil, comprising: an outer tube; an inner tube fixed in the outer tube; a fork tube slidably disposed between the outer tube and the inner tube; a control mechanism is disposed at the top of the fork pipe and communicates with the fork pipe and is adapted to pass hydraulic oil to regulate the flow of the hydraulic oil; a check valve mechanism includes a valve body disposed in the fork pipe and disposed in the fork pipe a shaft tube communicating with the control mechanism, and a valve block movably disposed in the shaft tube, the shaft tube communicating with the control mechanism to enable hydraulic oil to enter the control mechanism from the shaft tube, the valve block being adapted to be The hydraulic oil is pushed upward to allow the hydraulic oil to enter the shaft tube, and the hydraulic oil cannot flow backward to the shaft tube; and a damping mechanism is disposed at the bottom end of the one-way valve mechanism and located in the inner tube, and is provided with hydraulic oil Continuously passing in one direction; when the fork tube is compressed relative to the outer tube, hydraulic oil passes upward through the damping mechanism and then pushes the valve block into the shaft tube, when the fork tube is stretched relative to the outer tube The hydraulic oil above the damping mechanism is directly pushed The valve block continues to flow into the shaft tube. The vehicle shock absorber according to claim 1, wherein the fork pipe and the one-way valve mechanism cooperate to define a surrounding space that communicates with the control mechanism, and the oil level of the hydraulic oil filled in the surrounding space is higher than The valve block of the one-way valve mechanism. The vehicle shock absorber according to claim 1 or 2, wherein the damper mechanism includes a piston fixed to the bottom end of the shaft tube and located in the inner tube and defining at least one communication groove, and is fixed to the inner tube a sleeve on the inner wall surface of the shaft tube and disposed above the piston, a valve plate, a setting that can be pushed upwardly and sleeved on the shaft tube and located between the piston and the sleeve a blocking piece above the valve piece, a spring which is respectively abutted against the sleeve and the blocking piece, and a spring piece which respectively abuts against the valve piece and the blocking piece, and the at least one communication groove communicates with the inner side a tube and the shaft tube, the spring pushes against the blocking piece and the elastic piece, so that the elastic piece pushes the valve piece against the piston to close the at least one communication groove, so that the inner tube does not communicate with the shaft tube, when the valve When the sheet is pushed upward by the hydraulic oil, the hydraulic oil may flow into the shaft tube through the at least one communication groove by the inner tube. The vehicle shock absorber according to claim 3, wherein the shaft tube of the one-way valve mechanism defines a first oil passage for the valve block and communicates with the control mechanism, and a diameter connecting the first oil passage a second oil passage that is smaller than the first oil passage to make the valve block inaccessible, and at least one lateral hole that communicates with the second oil passage. When the valve piece of the damping mechanism is pushed upward by the hydraulic oil, the hydraulic oil The inner tube can pass through the at least one communication groove and enter the at least one side of the hole. The vehicle shock absorber according to claim 4, wherein the control mechanism comprises a fixing portion fixed to the top of the fork tube and closing the fork tube, and a fixing portion disposed in the fixing portion and located in the fork tube and tapered And an adjustment portion, and a seat portion disposed on the fixing portion and surrounding the adjustment portion, the seat portion defines a communication space for accommodating the adjustment portion, and the adjustment portion extends and communicates with the communication space And a regulating hole of the shaft tube of the one-way valve mechanism, and a through hole connecting the connecting space and the fork tube.