CN210565968U - Adjustable damping shock absorber - Google Patents
Adjustable damping shock absorber Download PDFInfo
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- CN210565968U CN210565968U CN201921060032.5U CN201921060032U CN210565968U CN 210565968 U CN210565968 U CN 210565968U CN 201921060032 U CN201921060032 U CN 201921060032U CN 210565968 U CN210565968 U CN 210565968U
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Abstract
The utility model discloses an adjustable damping shock absorber; the device comprises a hollow piston rod, a core rod, a throttling mandrel, a secondary piston, a secondary compression valve plate, a secondary flow valve plate, a gasket, a compression valve plate, a piston, a recovery valve plate and a nut; the outer diameter of the secondary piston is smaller than that of the piston; the secondary piston is distributed between the piston and the guide seat; the secondary piston, the secondary flow valve plate and the piston are fixedly arranged on the hollow piston rod; the core rod is in interference fit with the throttling mandrel, and the core rod and the throttling mandrel can rotate in the hollow piston rod; the secondary piston and the piston reciprocate in the working cylinder together; the end part of the hollow piston rod is provided with symmetrical circulation holes; wherein a pair of flow holes are communicated with the inner cavity of the piston; the two pairs of circulation holes are communicated with the inner cavity of the secondary piston; the secondary piston is provided with a through hole communicated with the inner cavity; the stepping motor is connected with the core rod at the end part, the stepping motor rotates by different angles to drive the core rod to rotate, oil liquid circulates in three states of complete communication, partial communication and complete sealing when the core rod rotates, and different damping force values are generated.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering and vehicle suspension, a adjustable damping shock absorber is related to.
Background
Compared with a fixed damping shock absorber, the adjustable damping shock absorber can change as required, and has better shock absorption capacity, so that the driving comfort of a vehicle is improved.
At present, a mechanically adjustable shock absorber on the market is shown in fig. 1, a core rod in a hollow piston rod is rotationally pushed or rotated in place, and the size of a throttling hole is adjusted through an ejector pin or a cock connected with the core rod, so that the change of a damping force is adjustable.
Therefore, an adjustable shock absorber is needed, which can adjust the damping force and can smoothly transition and adjust the change process of the damping force, so as to ensure the riding comfort.
Disclosure of Invention
The utility model discloses an adjustable damping shock absorber to among the solution prior art, fluid is direct to be through the orifice earial drainage, causes to take abrupt sense and not travelling comfort scheduling problem.
The utility model discloses a: the device comprises a stepping motor, an adjustable piston rod assembly, an oil seal, a guide seat, a working cylinder, an oil storage cylinder and a compression valve system; the method is characterized in that: the adjustable piston rod assembly comprises a hollow piston rod, a core rod, a throttling mandrel, a secondary piston, a secondary compression valve plate, a secondary flow valve plate, a gasket, a compression valve plate, a piston, a recovery valve plate and a nut; the outer diameter of the secondary piston is smaller than that of the piston; the secondary piston is distributed between the piston and the guide seat; the secondary piston, the secondary flow valve plate and the piston are fixedly arranged on the hollow piston rod; the stepping motor is connected with the core bar at the end part to accurately control the rotating angle; the hollow piston rod is in sliding fit with the oil seal and the guide seat; the piston is in sliding fit with the working cylinder, and the adjustable piston rod assembly, the working cylinder and the compression valve system are sealed in the oil storage cylinder together; the core rod is in interference fit with the throttling mandrel, and the core rod and the throttling mandrel can rotate in the hollow piston rod; the secondary piston and the piston reciprocate in the working cylinder together; the end part of the hollow piston rod is provided with symmetrical circulation holes which are divided into three pairs; wherein a pair of flow holes are communicated with the inner cavity of the piston; the two pairs of circulation holes are communicated with the inner cavity of the secondary piston; the secondary piston is provided with a through hole communicated with the inner cavity; the core rod is driven to rotate by rotating the stepping motor at different angles, and oil flows in three states when the core rod rotates, wherein the three states are completely communicated, partially communicated and completely closed, and different damping force values are generated.
The end part of the hollow piston rod of the utility model is provided with six symmetrical circulation holes, wherein a pair of circulation holes is communicated with the inner cavity of the piston; the piston is provided with a recovery inclined hole and a compression inclined hole, and a group of small inclined holes are formed in the inner cavity of the piston in the same direction as the recovery inclined hole; the outer ring belts at the two ends of the piston are higher than the inner platform; one end of the secondary piston is provided with a groove, and the platform at one side of the groove is higher than the platform at the inner side.
The adjustable piston rod assembly of the utility model also comprises a positioning sleeve, an O-shaped ring, a copper sleeve, a Teflon gasket, a Teflon ring, a limit sleeve, a stop block and an adjusting washer; the copper sleeve and the Teflon gasket are arranged on the core rod; the Teflon ring, the limiting sleeve and the limiting sleeve are in interference fit with the hollow piston rod, and the core rod is limited and fixed; the core rod is sleeved with the copper sleeve and the Teflon gasket and then is arranged in the hollow piston rod, the other end of the hollow piston rod is arranged in the O-shaped ring, and the O-shaped ring is positioned by the positioning sleeve in an interference fit mode. The end part of the hollow piston rod is pressed into the stop block for positioning. An adjusting washer, a secondary flow valve plate, a secondary piston, a secondary compression valve plate, an adjusting washer, a gasket, an adjusting washer, a compression valve plate, a piston, a reset valve plate, an adjusting washer and a gasket are sequentially sleeved on a hollow piston rod on one side of the retainer ring, and finally, the adjustable piston assembly is formed by screwing a nut.
The throttling core shaft of the utility model is provided with two symmetrical throttling holes, one pair of throttling holes, the other pair of communicating holes communicated with the groove, and one pair of inclined holes communicated with the cavity; when the throttle mandrel rotates in the hollow piston rod, the throttle holes can be communicated with the circulation holes, and the throttle holes are communicated with the circulation holes; the three pairs of throttling holes are provided with open slots, and when the throttling mandrel rotates, a part of throttling open slots are communicated with the circulation holes; the intercommunicating pore ensures that oil flows into the groove to lubricate the throttling mandrel and the inner wall of the hollow piston rod; oil flows into the cavity along the inclined hole, and oil is arranged between the core rod and the hollow piston rod.
The utility model discloses the core bar other end is sealed with O type circle, prevents that fluid from leaking.
When the throttle mandrel rotates to be completely sealed with the hollow piston rod circulation hole, only the piston and the reset valve block at the two ends of the piston, the compression valve block and the compression valve system participate in working, and the reset damping force and the compression damping force generated by the reset stroke and the compression stroke are maximum values at the moment; when the throttling mandrel rotates to the throttle hole and is completely communicated with the hollow piston rod circulation hole, the return stroke is realized, a part of oil opens the return valve plate and enters the cavity B to generate the return damping force, and a part of oil enters the inner cavity of the piston through the small inclined hole via the return inclined hole on the piston and enters the cavity B through the circulation hole and the throttle hole on the throttling mandrel in sequence; a part of oil enters the interior of the secondary piston through the groove of the secondary piston and enters the cavity B through the circulation hole and the throttling hole, and the recovery damping is minimum at the moment because the oil is shunted; in the compression stroke, part of oil enters a piston inner cavity through a throttling hole and a circulation hole on a throttling mandrel and directly enters a cavity A through a small inclined hole and a reset inclined hole, and the other part of oil enters a secondary piston inner cavity through the throttling hole and the circulation hole; because the rigidity of the compression valve plate on the piston is larger than that of the secondary compression valve plate, the compression valve plate is not opened at the moment, and in addition, because the oil liquid multi-way flows, the working degree of the compression valve system is small, and the compression damping force value is minimum at the moment; when the throttle hole rotated to the throttle mandrel is communicated with the circulation hole part of the hollow piston, the open slot is communicated with the circulation hole, the circulation area of the oil is reduced, and the damping force value is increased; the damper damping force value may vary between a minimum value and a maximum value as the oil flow area varies.
The utility model has the advantages of: the adjustable damping shock absorber is simple in structure, and the change of the damping force caused by the change of the flow area is ensured by the rotation of the throttling mandrel. And to the fluid through throttle dabber and opening, through the further pressure control of valve block, prevent the direct pressure release of fluid, make fluid step by step hierarchical through the flow passage pressure of difference, guarantee to take the travelling comfort.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the adjustable piston rod assembly of the present invention;
fig. 3 is a schematic view of the end of the hollow piston rod of the present invention;
fig. 4 is a schematic view of the throttling mandrel of the present invention;
fig. 5 is a schematic view of a secondary piston of the present invention;
fig. 6 is a schematic view of the piston of the present invention;
FIG. 7 is a schematic view of a flow of oil with a flow hole completely sealed;
FIG. 8 is a schematic view of the flow of oil during a recovery stroke with the flow orifice fully open;
FIG. 9 is a schematic view of the oil flow during the compression stroke with the flow port fully open;
fig. 10 is a schematic diagram of the change of the damping force.
In the figure: 1 step motor, 2 adjustable piston rod assembly, 3 oil seal, 4 guide seat, 5 working cylinder, 6 oil storage cylinder, 7 compression valve system, 8 core rod, 9 positioning sleeve, 10O-shaped ring, 11 hollow piston rod, 11a circulation hole 1, 11B circulation hole, 12 copper sleeve, 13 Teflon gasket, 14 throttle mandrel, 14a throttle hole 1, 14B communication hole, 14c throttle hole, 14d inclined hole, 14e open slot, 14F groove, 15 Teflon ring, 16 limit sleeve, 17 baffle, 18 adjusting washer, 19 secondary circulation valve plate, 20 secondary piston, 20a straight hole, 20B groove, 21 secondary compression valve plate, 22 gasket, 23 compression valve plate, 24 piston, 24a reset inclined hole, 24B compression inclined hole, 24c small inclined hole, 25 reset valve plate, 26 nut, A cavity, B cavity, F reset oil stroke flow direction and Y compression oil stroke flow direction.
Detailed Description
An embodiment of the present invention is described in detail below with reference to the accompanying drawings.
The embodiment of the utility model is shown in figure 1, and comprises a stepping motor 1, an adjustable piston rod assembly 2, an oil seal 3, a guide seat 4, a working cylinder 5, an oil storage cylinder 6 and a compression valve system 7.
As shown in fig. 2, the adjustable piston rod assembly 2 includes a core rod 8, a positioning sleeve 9, an O-ring 10, a hollow piston rod 11, a copper sleeve 12, a teflon gasket 13, a throttle mandrel 14, a teflon ring 15, a stop sleeve 16, a stop 17, an adjusting washer 18, a secondary flow valve plate 19, a secondary piston 20, a secondary compression valve plate 21, a gasket 22, a compression valve plate 23, a piston 24, a rebound valve plate 25, and a nut 26; the core rod 8 is in interference fit with the throttling mandrel 14, and the copper sleeve 12 and the Teflon gasket 13 are sleeved into the hollow piston rod 11; the core rod 8 and the throttling mandrel 14 can rotate in the hollow piston rod 11; the Teflon ring 15 and the limiting sleeve 16 are installed in the hollow piston rod, and the limiting sleeve 16 is in interference fit with the hollow piston rod 11 to play a limiting and fixing role. The other end of the hollow piston rod 11 is provided with an O-shaped ring 10 which is positioned by a positioning sleeve 9 in an interference fit way; the end of the hollow piston rod 11 is positioned by pressing a stop block 17. An adjusting washer 18, a secondary flow valve plate 19, a secondary piston 20, a secondary compression valve plate 21, an adjusting washer 18, a gasket 22, an adjusting washer 18, a compression valve plate 23, a piston 24, a reset valve plate 25, an adjusting washer 18 and a gasket 22 are sequentially sleeved on the hollow piston rod 11 on one side of the stop block 17, and finally, the adjustable piston assembly is formed by screwing a nut 26. The adjustable piston rod assembly 2 is sleeved in the guide seat 4, the oil seal 3, the working cylinder 5 and the compression valve system 7 are sealed in the oil storage cylinder 6 together. The adjustable piston rod assembly 2 is in sliding fit with the oil seal 3 and the guide seat 4, the piston 24 is in sliding fit with the working cylinder 5, the secondary piston 20 and the piston 24 reciprocate in the working cylinder 5 together, and the outer diameter of the secondary piston 20 is smaller than that of the piston 24.
As shown in fig. 3, the end of the hollow piston rod 11 is provided with two pairs of symmetrical flow holes 11a and a pair of flow holes 11 b; one pair of the flow holes 11b communicates with the inner chamber of the piston 24.
As shown in fig. 4, the throttle body 14 has two pairs of symmetrical throttle holes 14a, 14c, another pair of communicating holes 14b communicating with the groove 14f, and a pair of inclined holes 14d communicating with the cavity. The pair of orifices 14c of the throttle body 14 are flush with the pair of flow holes 11b of the hollow piston rod 11, and the other two pairs of orifices 14a are flush with the other two pairs of flow holes 11a of the hollow piston rod 11, so that when the throttle body 14 is rotated inside the hollow piston rod 11, the orifices 14a and 14c can communicate with the flow holes 11a and 11 b. The three pairs of throttling holes are provided with opening grooves 14e, and when the throttling core shaft 14 rotates, a part of the throttling opening grooves 14e can be ensured to be communicated with the circulating holes. The structural design ensures that oil flows in three states, namely, complete communication, partial communication and complete sealing when the 14 throttling core shaft rotates. The communication hole 14b ensures that oil flows into the groove 14f to lubricate the throttling mandrel 14 and the inner wall of the hollow piston rod 11. The inclined hole 14d ensures that oil flows into the cavity, so that oil is kept between the core rod and the 11 hollow piston rod to ensure lubrication. The 13 teflon washers and 15 teflon rings at the two ends of the 14 throttling spindle ensure the smoothness of the rotation of the 14 throttling spindle 8. The other end of the core rod 8 is sealed by an O-shaped ring 10 to prevent oil leakage.
The secondary piston 20 has a through hole 20a communicating with the inner chamber as shown in fig. 5. The secondary piston 20 has a recess 20b at one end, and the platform on one side of the recess 20b is higher than the platform on the inner side.
As shown in fig. 6, the piston 24 has a recovery inclined hole 24a and a compression inclined hole 24b, and the inner cavity of the piston 24 has a set of small inclined holes 24c in the same direction as the recovery inclined hole 24 a. The outer bands at the ends of the piston 24 are higher than the inner platforms. Two pairs of flow holes 11b communicate with the secondary piston 20 interior chamber.
As shown in fig. 7, when the recovery stroke oil flows to F and the compression stroke oil flows to Y, and the throttle mandrel 14 rotates to completely close the through hole of the hollow piston rod 11, only the piston 24 and the recovery valve plate 25 and the compression valve plate 23 at both ends of the piston 24 and the entire compression valve system 7 participate in the operation, and the recovery damping force and the compression damping force generated by the recovery stroke and the compression stroke are maximum values at this time.
When the throttle mandrel 14 rotates to the position that the throttling hole is completely communicated with the through hole of the hollow piston rod 11, in the reset stroke, a part of oil opens the reset valve plate 25 and enters the cavity B to generate the reset damping force, and a part of oil enters the inner cavity of the piston 24 through the reset inclined hole 24a on the piston 24, the small inclined hole 24c and then enters the cavity B through the through hole 11B and the throttling hole 14c on the throttle mandrel 14. A portion of the oil also enters the interior of the secondary piston 20 through the groove 20B of the secondary piston 20, passes through the flow port 11a and the orifice 14a, and enters the B chamber, where the rebound damping is minimized due to the oil being diverted.
In the compression stroke, as shown in fig. 9, a part of oil enters the piston inner cavity 24 through the throttle hole 14b and the flow hole 11b on the throttle mandrel 14, and directly enters the cavity a through the small inclined hole 24c and the reset inclined hole 24 a. The other oil enters the inner cavity of the secondary piston 20 through the throttle hole 14a and the through hole 11a, and the secondary compression valve plate 21 and the secondary flow valve plate 19 are arranged on two sides of the through hole 20a of the inner cavity of the secondary piston 20, so that the oil opens the secondary compression valve plate 21 and the secondary flow valve plate 19 through pressure and enters the cavity A. Because the rigidity of the compression valve plate 23 on the piston 24 is greater than that of the secondary compression valve plate 21, the compression valve plate 23 is not opened at the moment, and in addition, because the oil multi-way flows, the working degree of the compression valve system 7 is small, and the compression damping force value is minimum at the moment.
When the orifice to which the throttle mandrel 14 is rotated is partially communicated with the circulation hole of the hollow piston 11, that is, the opening groove 14e is communicated with the circulation hole, the circulation area of the oil is decreased, and at this time, the damping force value is increased. Thus, the damper damping force value may vary between a minimum value and a maximum value as the oil flow area varies.
Fig. 10 shows different damping force values for different angles of rotation of the stepping motor 1. The adjustable damping vibration absorber can accurately control the rotating angle through the stepping motor 1 with the end part connected with the core rod 8.
Claims (6)
1. An adjustable damping shock absorber comprising: the device comprises a stepping motor, an adjustable piston rod assembly, an oil seal, a guide seat, a working cylinder, an oil storage cylinder and a compression valve system; the method is characterized in that: the adjustable piston rod assembly comprises a hollow piston rod, a core rod, a throttling mandrel, a secondary piston, a secondary compression valve plate, a secondary flow valve plate, a gasket, a compression valve plate, a piston, a recovery valve plate and a nut; the outer diameter of the secondary piston is smaller than that of the piston; the secondary piston is distributed between the piston and the guide seat; the secondary piston, the secondary flow valve plate and the piston are fixedly arranged on the hollow piston rod; the stepping motor is connected with the core bar at the end part to accurately control the rotating angle; the hollow piston rod is in sliding fit with the oil seal and the guide seat; the piston is in sliding fit with the working cylinder, and the adjustable piston rod assembly, the working cylinder and the compression valve system are sealed in the oil storage cylinder together; the core rod is in interference fit with the throttling mandrel, and the core rod and the throttling mandrel can rotate in the hollow piston rod; the secondary piston and the piston reciprocate in the working cylinder together; the end part of the hollow piston rod is provided with symmetrical circulation holes which are divided into three pairs; wherein a pair of flow holes are communicated with the inner cavity of the piston; the two pairs of circulation holes are communicated with the inner cavity of the secondary piston; the secondary piston is provided with a through hole communicated with the inner cavity; the core rod is driven to rotate by rotating the stepping motor at different angles, and oil flows in three states when the core rod rotates, wherein the three states are completely communicated, partially communicated and completely closed, and different damping force values are generated.
2. An adjustable damping shock absorber according to claim 1 wherein: the end part of the hollow piston rod is provided with six symmetrical circulation holes, wherein a pair of the circulation holes is communicated with the inner cavity of the piston; the piston is provided with a recovery inclined hole and a compression inclined hole, and a group of small inclined holes are formed in the inner cavity of the piston in the same direction as the recovery inclined hole; the outer ring belts at the two ends of the piston are higher than the inner platform; one end of the secondary piston is provided with a groove, and the platform at one side of the groove is higher than the platform at the inner side.
3. An adjustable damping shock absorber according to claim 1 wherein: the adjustable piston rod assembly also comprises a positioning sleeve, an O-shaped ring, a copper sleeve, a Teflon gasket, a Teflon ring, a limiting sleeve, a stop block and an adjusting washer; the copper sleeve and the Teflon gasket are arranged on the core rod; the Teflon ring, the limiting sleeve and the limiting sleeve are in interference fit with the hollow piston rod, and the core rod is limited and fixed; the core rod is sleeved with the copper sleeve and the Teflon gasket and then is arranged in the hollow piston rod, the other end of the hollow piston rod is arranged in the O-shaped ring, and the O-shaped ring is positioned by interference fit of the positioning sleeve; the end part of the hollow piston rod is pressed into a stop block for positioning; an adjusting washer, a secondary flow valve plate, a secondary piston, a secondary compression valve plate, an adjusting washer, a gasket, an adjusting washer, a compression valve plate, a piston, a reset valve plate, an adjusting washer and a gasket are sequentially sleeved on a hollow piston rod on one side of the retainer ring, and finally, the adjustable piston assembly is formed by screwing a nut.
4. An adjustable damping shock absorber according to claim 1 wherein: two pairs of symmetrical throttling holes are formed in the throttling mandrel, one pair of throttling holes are formed in the throttling mandrel, the other pair of communicating holes are communicated with the groove, and the pair of inclined holes are communicated with the cavity; when the throttle mandrel rotates in the hollow piston rod, the throttle holes can be communicated with the circulation holes, and the throttle holes are communicated with the circulation holes; the three pairs of throttling holes are provided with open slots, and when the throttling mandrel rotates, a part of throttling open slots are communicated with the circulation holes; the intercommunicating pore ensures that oil flows into the groove to lubricate the throttling mandrel and the inner wall of the hollow piston rod; oil flows into the cavity along the inclined hole, and oil is arranged between the core rod and the hollow piston rod.
5. An adjustable damping shock absorber according to claim 1 wherein: the other end of the core rod is sealed by an O-shaped ring to prevent oil leakage.
6. An adjustable damping shock absorber according to claim 1 wherein: when the throttle mandrel rotates to be completely closed with the hollow piston rod circulation hole, only the piston and the rebound valve plates at the two ends of the piston, the compression valve plates and the compression valve system participate in working, and at the moment, the rebound damping force and the compression damping force generated by the rebound stroke and the compression stroke are maximum values; when the throttling mandrel rotates to the throttle hole and is completely communicated with the hollow piston rod circulation hole, the return stroke is realized, a part of oil opens the return valve plate and enters the cavity B to generate the return damping force, and a part of oil enters the inner cavity of the piston through the small inclined hole via the return inclined hole on the piston and enters the cavity B through the circulation hole and the throttle hole on the throttling mandrel in sequence; a part of oil enters the interior of the secondary piston through the groove of the secondary piston and enters the cavity B through the circulation hole and the throttling hole, and the recovery damping is minimum at the moment because the oil is shunted; in the compression stroke, part of oil enters a piston inner cavity through a throttling hole and a circulation hole on a throttling mandrel and directly enters a cavity A through a small inclined hole and a reset inclined hole, and the other part of oil enters a secondary piston inner cavity through the throttling hole and the circulation hole; because the rigidity of the compression valve plate on the piston is larger than that of the secondary compression valve plate, the compression valve plate is not opened at the moment, and in addition, because the oil liquid multi-way flows, the working degree of the compression valve system is small, and the compression damping force value is minimum at the moment; when the throttle hole rotated to the throttle mandrel is communicated with the circulation hole part of the hollow piston, the open slot is communicated with the circulation hole, the circulation area of the oil is reduced, and the damping force value is increased; the damper damping force value may vary between a minimum value and a maximum value as the oil flow area varies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921060032.5U CN210565968U (en) | 2019-07-09 | 2019-07-09 | Adjustable damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921060032.5U CN210565968U (en) | 2019-07-09 | 2019-07-09 | Adjustable damping shock absorber |
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| Publication Number | Publication Date |
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| CN210565968U true CN210565968U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921060032.5U Active CN210565968U (en) | 2019-07-09 | 2019-07-09 | Adjustable damping shock absorber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339442A (en) * | 2021-06-07 | 2021-09-03 | 浙江戈尔德智能悬架股份有限公司 | Damping force adjustable shock absorber |
| CN113931961A (en) * | 2021-09-09 | 2022-01-14 | 神龙汽车有限公司 | Novel hydraulic self-adaptive damping adjustment shock absorber |
-
2019
- 2019-07-09 CN CN201921060032.5U patent/CN210565968U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339442A (en) * | 2021-06-07 | 2021-09-03 | 浙江戈尔德智能悬架股份有限公司 | Damping force adjustable shock absorber |
| CN113931961A (en) * | 2021-09-09 | 2022-01-14 | 神龙汽车有限公司 | Novel hydraulic self-adaptive damping adjustment shock absorber |
| CN113931961B (en) * | 2021-09-09 | 2023-03-28 | 神龙汽车有限公司 | Novel hydraulic self-adaptive damping adjustment shock absorber |
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