CN114263698A - Compression high-low two-speed adjusting valve device of vehicle shock absorber - Google Patents
Compression high-low two-speed adjusting valve device of vehicle shock absorber Download PDFInfo
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- CN114263698A CN114263698A CN202111548343.8A CN202111548343A CN114263698A CN 114263698 A CN114263698 A CN 114263698A CN 202111548343 A CN202111548343 A CN 202111548343A CN 114263698 A CN114263698 A CN 114263698A
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Abstract
A compression high-low two-speed adjusting valve device of a vehicle shock absorber belongs to the technical field of hydraulic pressure. The invention comprises an outer valve body, a high-speed valve seat, a high-speed adjusting knob, a high-speed knob fixing sleeve, an adjusting valve core and a low-speed valve core; the high-speed valve seat is arranged at one end of the outer valve body, and the high-speed adjusting knob is tightly attached to the other end of the outer valve body through a high-speed knob fixing sleeve; the regulating valve core is in threaded connection with the inside of the outer valve body, and the low-speed valve core is in threaded connection with the inside of the regulating valve core; a low-speed throttling hole matched with the low-speed valve core is formed in the side wall of the adjusting valve core, a high-speed outer through hole and a high-speed inner through hole are formed in the high-speed valve seat, a one-way valve plate is fixed at one end, located outside the valve body, of the high-speed outer through hole through a clamp spring, a one-way valve plate group is arranged at one end, located inside the valve body, of the high-speed inner through hole, and an adjusting spring is arranged between the one-way valve plate group and the adjusting valve core; the side wall of the outer valve body is provided with a radial through hole. The invention has wide speed range of adjusting the compression damping and high adjusting precision, and can effectively ensure excellent operability and comfort of the vehicle.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a compression high-low two-speed adjusting valve device of a vehicle shock absorber.
Background
Shock absorbers are one of the important components of the chassis suspension of a vehicle and play a decisive role in the handling and comfort of the vehicle. The requirements of operability and comfort on the damping coefficient of the shock absorber are different, and the traditional shock absorber has a fixed damping coefficient and cannot simultaneously meet the requirements of people on the optimal operability and the optimal comfort. The damping force of the shock absorber is divided into restoration damping force and compression damping force, and the compression damping force has great influence on comfort in the running process.
The compression damping adjusting valve is a device which is arranged on the shock absorber and can realize the adjustment of the compression damping of the shock absorber, in the prior art, the adjusting speed range of the adjusting valve is narrow, the damping adjusting precision of a part of adjusting valves in the low-speed range is high, but the rigidity is too low, so that the adjusting limit is reached too early to realize the high-speed adjustment; the damping adjustment precision of a part of adjusting valves in a high-speed range is high, but the rigidity is too high, the adjusting valves are not sensitive to small flow at low speed, and the low-speed damping precise adjustment cannot be realized; the rigidity of a part of regulating valves is moderate, the regulating precision is high in a medium speed range, but the regulating precision is poor in high and low speeds. Therefore, a regulating valve device with wide regulating speed range and high regulating precision of compression damping is needed, the damping of the shock absorber can be regulated in a large range and high precision, the structure is simple, the cost is low, the compression damping regulation of the shock absorber can be realized through simple manual operation and extremely low cost, and the pursuit of people on better operability and comfort of automobiles is met.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a compression high-low two-speed regulating valve device of a vehicle shock absorber, which has the advantages of wide regulating speed range of compression damping, high regulating precision and capability of effectively ensuring excellent operability and comfort of a vehicle.
The purpose of the invention is realized by the following technical scheme:
a compression high-low two-speed regulating valve device of a vehicle shock absorber comprises an outer valve body, a high-speed valve seat, a high-speed regulating knob, a high-speed knob fixing sleeve, a regulating valve core and a low-speed valve core; the high-speed valve seat is arranged at one end of the outer valve body, and the high-speed adjusting knob is tightly attached to the other end of the outer valve body through the high-speed knob fixing sleeve; the adjusting valve core is in threaded connection with the inner valve body, one end of the adjusting valve core extends out of the central hole of the high-speed valve seat, and the other end of the adjusting valve core is fixedly connected with the high-speed adjusting knob in the circumferential direction; the adjusting valve core is internally provided with a through axial through hole, the low-speed valve core is connected in the adjusting valve core in a threaded manner, and one end of the low-speed valve core extends out of the middle holes at the end part of the adjusting valve core and the end part of the high-speed adjusting knob;
the side wall of the regulating valve core is provided with a low-speed throttling hole matched with the low-speed valve core, the high-speed valve seat is provided with a high-speed outer through hole and a high-speed inner through hole, one end of the high-speed outer through hole, which is positioned outside the valve body, is fixed with a one-way valve plate through a clamp spring, one end of the high-speed inner through hole, which is positioned inside the valve body, is provided with a one-way valve plate group, and a regulating spring is arranged between the one-way valve plate group and the regulating valve core; and the side wall of the outer valve body is provided with a radial through hole.
The use principle of the invention is as follows: the high-speed valve seat is connected with the working cylinder of the shock absorber, namely the high-speed outer through hole, the high-speed inner through hole and the axial through hole of the regulating valve core are communicated with the working cylinder; the outer valve body is connected with the gas tank, namely, the radial through hole on the outer valve body is communicated with the gas tank. When the shock absorber is compressed, the damping liquid in the working cylinder needs to enter the outer valve body through the axial through hole of the regulating valve core, the low-speed throttling hole and/or the high-speed inner through hole and then enter the gas tank through the radial through hole on the outer valve body.
Low-speed compression damping force adjustment: rotating the low-speed valve core, and enabling the low-speed valve core to move axially relative to the adjusting valve core through the thread fit relation between the low-speed valve core and the adjusting valve core so as to change the plugging area of the low-speed valve core on a low-speed throttling hole on the adjusting valve core, namely adjusting the effective passing area of the low-speed throttling hole, wherein when the effective passing area is reduced, the low-speed compression damping force is increased; as the effective pass area increases, the low speed compression damping force decreases.
High-speed compression damping force adjustment: the high-speed adjusting knob is rotated to drive the adjusting valve core to synchronously rotate, the adjusting valve core moves axially relative to the outer valve body through the thread fit relation between the adjusting valve core and the outer valve body to change the compression amount of the adjusting spring, namely the pressure of the adjusting spring on the one-way valve plate group, when the pressure is increased, the resistance to be overcome when the one-way valve plate group is opened is increased, and the high-speed compression damping force is increased; when the pressure is reduced, the resistance to be overcome when the one-way valve plate set is opened is reduced, and the high-speed compression damping force is reduced. When the adjusting valve core rotates, the low-speed valve core rotates along with the adjusting valve core, the relative position between the low-speed valve core and the adjusting valve core is not changed, and the adjustment of the high-speed damping force does not influence the adjustment of the low-speed damping force.
Therefore, the invention can simultaneously and accurately adjust the low-speed compression damping force and the high-speed compression damping force of the vehicle shock absorber to meet the requirements of operability and comfort, namely, the adjustment speed range of the compression damping is wide, and the adjustment precision is high.
The working principle of the invention is as follows:
when the shock absorber is in a compression stroke, damping liquid enters the outer valve body from the working cylinder, and when the shock absorber is at a low speed, the pressure of the liquid is not enough to open the one-way valve piece group, so that all the liquid needs to sequentially pass through the axial through hole and the low-speed throttling hole of the regulating valve core, then enters the inner cavity of the outer valve body, and then enters the gas tank through the radial through hole on the outer valve body. When the valve is in high speed, the pressure of the liquid is increased, a part of the liquid passes through the high-speed inner through hole of the high-speed valve seat, after the pressing force of the adjusting spring is overcome, the one-way valve plate set is opened and flows into the inner cavity of the outer valve body, and then the liquid enters the gas tank through the radial through hole on the outer valve body; the other part of liquid still needs to enter the inner cavity of the outer valve body after passing through the axial through hole and the low-speed throttling hole of the regulating valve core, and then enters the gas tank through the radial through hole on the outer valve body.
When the shock absorber is in a return stroke, damping liquid flows into an inner cavity of the outer valve body from the gas tank through the radial through hole on the outer valve body, and then part of the liquid flows back to the working cylinder after sequentially passing through the low-speed throttling hole and the axial through hole of the regulating valve core; and the other part of liquid passes through the high-speed outer through hole on the high-speed valve seat, opens the one-way valve plate and flows back to the working cylinder.
Preferably, the low-speed valve element is provided with a radial hole, a low-speed spring steel ball assembly is arranged in the radial hole, and the inner side wall of the adjusting valve element is provided with a plurality of circumferentially arranged low-speed adjusting positioning grooves matched with the steel balls of the low-speed spring steel ball assembly, so that step-by-step adjustment is realized, and the stability of the position of the low-speed valve element relative to the adjusting valve element after adjustment, namely the stability of the effective passing area of the low-speed throttling hole, is ensured.
Preferably, an axial hole is formed in one end, connected with the high-speed adjusting knob, of the outer valve body, a high-speed spring steel ball assembly is arranged in the axial hole, and a plurality of high-speed adjusting positioning grooves which are circumferentially arranged and matched with steel balls of the high-speed spring steel ball assembly are formed in the end face of the high-speed adjusting knob, so that step-by-step adjustment is realized, the stability of the position of the adjusting valve core relative to the outer valve body after adjustment is effectively guaranteed, particularly the influence of the rotation of the low-speed valve core is avoided, and the stability of the adjusting spring on the pressure of the one-way valve block set is guaranteed.
Preferably, a low-speed valve core clamping ring is arranged at one end, far away from the high-speed valve seat, of the regulating valve core, and a low-speed regulating limiting table matched with the low-speed valve core clamping ring is arranged on the low-speed valve core so as to limit the maximum moving distance of the low-speed valve core in the direction, namely limit the maximum opening area of the low-speed valve core to the low-speed throttling hole.
Preferably, an adjusting valve core clamping ring is arranged at one end, close to the high-speed knob, in the outer valve body, and a high-speed adjusting limiting table matched with the adjusting valve core clamping ring is arranged on the adjusting valve core so as to limit the maximum moving distance of the adjusting valve core in the direction, namely limit the minimum pressure of an adjusting spring on a one-way valve sheet set.
Preferably, the low-speed valve core and the regulating valve core are coaxially matched, the middle part of the matching section is a thread pair, the part close to the high-speed valve seat is in transition fit, and the part far away from the high-speed valve seat is in clearance fit, so that better coaxiality between the low-speed valve core and the regulating valve core is ensured, and meanwhile, the fluency of the low-speed valve core relative to the regulating valve core during axial movement is not influenced.
Preferably, the adjusting valve core and the outer valve body are coaxially matched, the part of the matching section close to the high-speed valve seat is a thread pair, and the part far away from the high-speed valve seat is in transition fit, so that better coaxiality between the adjusting valve core and the outer valve body is ensured, and meanwhile, the fluency of the adjusting valve core in axial movement relative to the outer valve body is not influenced.
Preferably, one end of the low-speed valve core, which extends out of the high-speed adjusting knob, is provided with a low-speed adjusting knob, the end part of the low-speed valve core is provided with a mounting hole, the mounting hole and the outer side surface of the low-speed adjusting knob are circumferentially fixed through a matched positioning surface, and the low-speed adjusting knob and the low-speed valve core are axially fixed through a screw. Through setting up low-speed adjusting knob to carry out rotation regulation operation to the low-speed case.
Preferably, the high-speed adjusting knob is provided with a high-speed knob handle on the outer side surface, and the high-speed knob handle and the high-speed adjusting knob are circumferentially fixed through a matched positioning surface and axially fixed through a screw. Through setting up high-speed knob handle to carry out the rotation regulation operation to adjusting the case, the dismantled and assembled structure of high-speed knob handle is more convenient for the installation of the fixed cover of high-speed knob simultaneously.
Preferably, sealing rings are arranged between the low-speed valve core and the adjusting valve core, between the low-speed valve core and the high-speed adjusting knob, between the adjusting valve core and the outer valve body, and between the high-speed adjusting knob and the high-speed knob fixing sleeve, so that the sealing performance of the whole adjusting valve is ensured.
The invention has the advantages that:
1. the adjusting speed range of the compression damping force of the vehicle shock absorber is wide, the adjusting precision is high, and excellent operability and comfort of the vehicle can be effectively guaranteed;
2. the whole structure is simple, the cost is low, the economic benefit is high, and the popularization and the use are easy;
3. the low-speed compression damping force adjustment and the high-speed compression damping force adjustment are not affected mutually and can be respectively adjusted, and the adjustment operation is simple and easy;
4. the unidirectional conduction design of the high-speed outer through hole and the high-speed inner through hole on the high-speed valve seat ensures that the through holes through which the oil liquid passes during compression and restoration work independently;
5. the cooperation of spring steel ball subassembly and constant head tank for low-speed and high-speed compression damping force are adjusted all can step by step, and can ensure the stability of adjusting the back state.
Drawings
FIG. 1 is a cross-sectional view of a compressed high-low two-speed regulator valve assembly of a vehicle shock absorber in accordance with the present invention;
FIG. 2 is a right side view of a compressed high-low two-speed regulator valve assembly of a vehicle shock absorber in accordance with the present invention;
FIG. 3 is a cross-sectional view of the outer valve body of the present invention;
FIG. 4 is a cross-sectional view of a high speed valve seat of the present invention;
FIG. 5 is a cross-sectional view of an adjustment valve cartridge according to the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a fluid flow diagram of a compression high-low two-speed adjusting valve device of a vehicle shock absorber during a compression stroke according to the present invention;
FIG. 8 is a schematic oil flow diagram of a compression high-low two-speed regulating valve device of a vehicle shock absorber in a recovery stroke according to the present invention;
in the figure: 1-cylindrical screw; 2-low speed adjusting knob; 3-low speed valve core; 4-low speed spring steel ball component; 5-adjusting the valve core; 6-high speed knob handle; 7-set screws; 8-high speed adjusting knob; 9-high speed knob fixing sleeve; 10-high speed spring steel ball component; 11-an outer valve body; 12-an adjustment spring; 13-a one-way valve disc set; 14-high speed valve seat; 15-a one-way valve plate; 16-a clamp spring; 17-a sealing ring; 18-a sealing ring; 19-a sealing ring; 20-sealing ring; 21-a sealing ring; 22-adjusting spool collar; 23-low speed spool collar; 24-a sealing ring; 111-radial through holes; 141-high speed outer vias; 142-high speed inner vias; 501-axial through hole; 502-low velocity orifice.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-6, a compression high-low two-speed adjusting valve device of a vehicle shock absorber comprises an outer valve body 11, a high-speed valve seat 14, a high-speed adjusting knob 8, a high-speed knob fixing sleeve 9, an adjusting valve core 5 and a low-speed valve core 3. Wherein, high-speed disk seat 14 through accurate threaded connection in 11 left ends of outer valve body, high-speed adjust knob 8 passes through the fixed cover 9 of high-speed knob hugs closely in 11 right-hand members of outer valve body, it is concrete, the fixed cover 9 of high-speed knob includes the cylindricality structure on the outer edge of an annular structure and a perpendicular to annular structure, and the annular structure presses high-speed adjust knob 8 to outer valve body 11 through the step on the high-speed adjust knob 8 of cooperation, and passes through threaded connection between the 11 lateral walls of cylindricality structure inside wall and outer valve body, realizes hugging closely of high-speed adjust knob 8 and outer valve body 11 through the fixed cover 9 of high-speed knob that screws to outer valve body 11 promptly, does not influence high-speed adjust knob 8 simultaneously and follows circumferential direction for outer valve body 11.
The adjusting valve core 5 is installed in the outer valve body 11 and is coaxially matched with the outer valve body 11, the left side section of the matching is a thread pair, the right side section of the matching is in transition matching, the thread pair converts the rotation of the adjusting valve core 5 relative to the outer valve body 11 into linear displacement, and the transition matching section ensures that the adjusting valve core 5 and the outer valve body 11 have better coaxiality and does not influence the fluency of the adjusting valve core 5 relative to the axial movement of the outer valve body 11. The left end of the regulating valve core 5 extends out of the central hole of the high-speed valve seat 14, and the right end of the regulating valve core is fixedly connected with the high-speed regulating knob 8 in the circumferential direction through a matched positioning surface, so that the high-speed regulating knob 8 can synchronously drive the regulating valve core 5 to rotate.
The adjusting valve element 5 is internally provided with a through axial through hole 501, the low-speed valve element 3 is arranged in the adjusting valve element 5 and is coaxially matched with the adjusting valve element 5, the left section of the matching is in transition fit, the middle section of the matching is a thread pair, the right section of the matching is in clearance fit, the thread pair converts the rotation of the low-speed valve element 3 relative to the adjusting valve element 5 into linear displacement, and the transition fit section and the clearance fit section do not influence the fluency of the low-speed valve element 3 relative to the adjusting valve element 5 during axial movement while ensuring better coaxiality between the low-speed valve element 3 and the adjusting valve element 5. The right end of the low-speed valve core 3 extends out of the middle holes at the right end of the regulating valve core 5 and the right end of the high-speed regulating knob 8.
The side wall of the regulating valve core 5 is provided with a low-speed orifice 502 matched with the low-speed valve core 3, that is, the low-speed valve core 3 is axially moved relative to the regulating valve core 5 by rotating the low-speed valve core 3, so that the blocking area of the low-speed orifice 502 on the regulating valve core 5 by the low-speed valve core 3 is changed, that is, the effective passing area of the low-speed orifice 502 is regulated.
The high-speed valve seat 14 is provided with a high-speed outer through hole 141 and a high-speed inner through hole 142, one end of the high-speed outer through hole 141, which is positioned outside the valve body, is fixed with a one-way valve plate 15 through a snap spring 16, namely the high-speed outer through hole 141 only allows oil to flow out from the valve body; one end of the high-speed inner through hole 142, which is positioned in the valve body, is provided with a one-way valve piece group 13, and an adjusting spring 12 is arranged between the one-way valve piece group 13 and a step on the adjusting valve core 5, namely, the high-speed inner through hole 142 only allows oil to flow inwards from the outside of the valve body on the premise of overcoming the pressure of the adjusting spring 12. Meanwhile, the adjusting valve core 5 can be axially moved relative to the outer valve body 11 by rotating the adjusting valve core 5, so that the distance between the step on the adjusting valve core 5 and the one-way valve plate group 13 is changed, the compression amount of the adjusting spring 12 is changed, that is, the pressure of the adjusting spring 12 on the one-way valve plate group 13 is changed, that is, the minimum oil pressure required by external oil flowing into the valve body through the high-speed inner through hole 132 is adjusted.
And a radial through hole 111 is formed in the side wall of the outer valve body 11 and used for communicating the valve body with the gas tank. The axial through hole 501 of the regulating valve core 5, the high-speed outer through hole 141 and the high-speed inner through hole 142 on the high-speed valve seat 14 are all used for communicating the valve body and the working cylinder of the shock absorber.
Specifically, be equipped with radial hole on the low-speed case 3, radial downthehole low-speed spring steel ball subassembly 4 that is equipped with, be equipped with a plurality of cooperations of arranging along circumference on the 5 inside walls of adjusting valve core the low-speed regulation constant head tank of the steel ball of low-speed spring steel ball subassembly 4 to the realization is adjusted step by step, and effectively guarantees to adjust the back, and low-speed case 3 is for the stability of adjusting valve core 5 positions, guarantees the stability of low-speed orifice 502 effectively through the area promptly. Similarly, the outer valve body 11 is connected the one end symmetry of high-speed adjust knob 8 is equipped with two axial holes, be equipped with high-speed spring steel ball subassembly 10 in the axial hole, be equipped with a plurality of along the cooperation of circumference range on the 8 terminal surfaces of high-speed adjust the constant head tank at a high speed of high-speed spring steel ball subassembly 10's steel ball to realize adjusting step by step, and effectively guarantee to adjust the back, adjust the stability of case 5 for outer valve body 11 position, especially avoid receiving 3 pivoted influences of low-speed case, thereby guarantee regulating spring 12 to the stability of check valve piece group 13 pressure.
Further, a low-speed valve core retainer ring 23 is arranged at one end, far away from the high-speed valve seat 14, in the adjusting valve core 5, and a low-speed adjusting limit table matched with the low-speed valve core retainer ring 23 is arranged on the low-speed valve core 3 to limit the maximum moving distance of the low-speed valve core 3 in the direction, that is, the maximum opening area of the low-speed valve core 3 to the low-speed orifice 502 is limited. Similarly, an adjusting valve core clamping ring 22 is arranged at one end, close to the high-speed knob 8, in the outer valve body 11, and a high-speed adjusting limiting table matched with the adjusting valve core clamping ring 22 is arranged on the adjusting valve core 5 to limit the maximum moving distance of the adjusting valve core 5 in the direction, namely, to limit the minimum pressure of the adjusting spring 12 on the one-way valve sheet group 13.
In order to facilitate the rotation operation of the low-speed valve core 3, a low-speed adjusting knob 2 is arranged at one end of the low-speed valve core 3 extending out of the high-speed adjusting knob 8, a mounting hole is formed in the end portion of the low-speed valve core 3, circumferential fixation is achieved between the mounting hole and the outer side face of the low-speed adjusting knob 2 through a matched positioning face, and the low-speed adjusting knob 2 and the low-speed valve core 3 are axially fixed through a cylindrical screw 1. Similarly, in order to facilitate the rotation operation of the adjusting valve core 5, a high-speed knob handle 6 is arranged on the outer side surface of the high-speed adjusting knob 8, and the high-speed knob handle 6 and the high-speed adjusting knob 8 are circumferentially fixed through a matched positioning surface and axially fixed through a set screw 7. Meanwhile, in order to facilitate the rotation operation of the high-speed knob handle 6, the high-speed knob handle has a larger diameter and can interfere with the disassembly and assembly of the high-speed knob fixing sleeve 9, the problem is effectively solved by the detachable structure of the high-speed knob handle 6, namely, the high-speed knob handle 6 can be installed after the high-speed knob fixing sleeve 9 is installed, and the high-speed knob fixing sleeve 9 can be detached after the high-speed knob handle 6 is detached.
Finally, a sealing ring 18 is arranged between the low-speed valve core 3 and the adjusting valve core 5, a sealing ring 24 is arranged between the low-speed valve core 3 and the high-speed adjusting knob 8, a sealing ring 19 is arranged between the adjusting valve core 5 and the outer valve body 11, and a sealing ring 21 is arranged between the high-speed adjusting knob 8 and the high-speed knob fixing sleeve 9, so that the sealing performance of the whole adjusting valve is ensured. Meanwhile, a sealing ring 17 is arranged between the outer periphery of the high-speed valve seat 14 and the matching surface of the gas tank, and a sealing ring 20 is arranged between the outer periphery of the outer valve body 11 and the matching surface of the gas tank, so that the sealing performance of the connection part of the regulating valve and the gas tank is ensured.
In summary, the use principle of the invention is as follows: the high-speed valve seat 14 is connected with a working cylinder of the shock absorber, namely the high-speed outer through hole 141, the high-speed inner through hole 142 and the axial through hole 501 of the regulating valve core 5 are communicated with the working cylinder; the outer valve body 11 is connected with the gas tank, namely, the radial through hole 111 on the outer valve body 11 is communicated with the gas tank. When the shock absorber is compressed, the damping fluid in the working cylinder needs to enter the outer valve body through the axial through hole 501 of the regulating valve core 5, the low-speed throttling hole 502 and/or the high-speed inner through hole 142, and then enter the gas tank through the radial through hole 111 of the outer valve body 11.
Low-speed compression damping force adjustment: the low-speed adjusting knob 2 is rotated to synchronously drive the low-speed valve core 3 to rotate relative to the adjusting valve core 5, the low-speed valve core 3 moves axially relative to the adjusting valve core 5 through the thread fit relation between the low-speed valve core 3 and the adjusting valve core 5 so as to change the plugging area of the low-speed valve core 3 on the low-speed throttling hole 502 on the adjusting valve core 5, namely, the effective passing area of the low-speed throttling hole 502 is adjusted, and when the effective passing area is reduced, the low-speed compression damping force is increased; as the effective pass area increases, the low speed compression damping force decreases.
High-speed compression damping force adjustment: the high-speed knob handle 6 is rotated to synchronously drive the high-speed adjusting knob 8 and the adjusting valve core 5 to synchronously rotate, the adjusting valve core 5 moves axially relative to the outer valve body 11 through the thread fit relation between the adjusting valve core 5 and the outer valve body 11 so as to change the compression amount of the adjusting spring 12, namely the pressure of the adjusting spring 12 on the one-way valve sheet set 13 is changed, when the pressure is increased, the resistance to be overcome when the one-way valve sheet set 13 is opened is increased, and the high-speed compression damping force is increased; when the pressure decreases, the resistance to be overcome when the check valve group 13 opens decreases, and the high-speed compression damping force decreases. When the adjustment valve body 5 rotates, the low speed valve body 3 rotates together with the adjustment valve body, and the relative position between the low speed valve body 3 and the adjustment valve body 5 is not changed, that is, the adjustment of the high speed damping force does not affect the adjustment of the low speed damping force.
Therefore, the invention can simultaneously and accurately adjust the low-speed compression damping force and the high-speed compression damping force of the vehicle shock absorber to meet the requirements of operability and comfort, namely, the adjustment speed range of the compression damping is wide, and the adjustment precision is high.
The working principle of the invention is as follows:
as shown in fig. 7, when the shock absorber is in a compression stroke, damping fluid enters the outer valve body from the working cylinder, and at a low speed, the pressure of the fluid is not enough to open the one-way valve plate group 13, so all the fluid needs to pass through the axial through hole 501 and the low-speed orifice 502 of the regulating valve core 5 in sequence, then enters the inner cavity of the outer valve body 11, and then enters the gas tank through the radial through hole 111 of the outer valve body 11. At high speed, the liquid pressure is increased, a part of liquid L2 passes through the high-speed inner through hole 142 of the high-speed valve seat 14, after overcoming the pressing force of the adjusting spring 13, the one-way valve plate set 14 is opened to flow into the inner cavity of the outer valve body 11, and then the liquid enters the gas tank through the radial through hole 111 on the outer valve body 11; the other part of the liquid L1 still needs to pass through the axial through hole 501 and the low-speed orifice 502 of the regulating valve element 5, then enters the inner cavity of the outer valve body 11, and then enters the gas tank through the radial through hole 111 on the outer valve body 11.
As shown in fig. 8, when the shock absorber is in a rebound stroke, damping fluid flows from the gas tank into the inner cavity of the outer valve body 11 through the radial through hole 111 on the outer valve body 11, and then a part of the fluid L3 flows back to the working cylinder after sequentially passing through the low-speed throttling hole 502 and the axial through hole 501 of the regulating valve core 5; the other part of the liquid L4 passes through the high-speed outer through hole 141 on the high-speed valve seat 14, opens the check valve sheet 15 and flows back to the working cylinder.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A compression high-low two-speed regulating valve device of a vehicle shock absorber is characterized by comprising an outer valve body, a high-speed valve seat, a high-speed regulating knob, a high-speed knob fixing sleeve, a regulating valve core and a low-speed valve core; the high-speed valve seat is arranged at one end of the outer valve body, and the high-speed adjusting knob is tightly attached to the other end of the outer valve body through the high-speed knob fixing sleeve; the adjusting valve core is in threaded connection with the inner valve body, one end of the adjusting valve core extends out of the central hole of the high-speed valve seat, and the other end of the adjusting valve core is fixedly connected with the high-speed adjusting knob in the circumferential direction; the adjusting valve core is internally provided with a through axial through hole, the low-speed valve core is connected in the adjusting valve core in a threaded manner, and one end of the low-speed valve core extends out of the middle holes at the end part of the adjusting valve core and the end part of the high-speed adjusting knob;
the side wall of the regulating valve core is provided with a low-speed throttling hole matched with the low-speed valve core, the high-speed valve seat is provided with a high-speed outer through hole and a high-speed inner through hole, one end of the high-speed outer through hole, which is positioned outside the valve body, is fixed with a one-way valve plate through a clamp spring, one end of the high-speed inner through hole, which is positioned inside the valve body, is provided with a one-way valve plate group, and a regulating spring is arranged between the one-way valve plate group and the regulating valve core; and the side wall of the outer valve body is provided with a radial through hole.
2. The apparatus as claimed in claim 1, wherein the low speed valve spool has a radial hole, the radial hole has a low speed spring ball assembly, and the inner sidewall of the regulating spool has a plurality of circumferentially arranged low speed regulating positioning grooves for engaging with the balls of the low speed spring ball assembly.
3. The compressed high-low two-speed adjusting valve device of the vehicle shock absorber as claimed in claim 1, wherein an axial hole is formed at one end of the outer valve body connected with the high-speed adjusting knob, a high-speed spring steel ball assembly is arranged in the axial hole, and a plurality of high-speed adjusting positioning grooves which are arranged along the circumferential direction and are matched with the steel balls of the high-speed spring steel ball assembly are arranged on the end surface of the high-speed adjusting knob.
4. The device as claimed in claim 1, wherein a low-speed spool retainer is disposed on an end of the spool remote from the high-speed valve seat, and a low-speed adjusting stop is disposed on the low-speed spool and engages with the low-speed spool retainer.
5. The compressed high-low two-speed regulating valve device of the vehicle shock absorber as claimed in claim 1, wherein an end of the outer valve body close to the high-speed knob is provided with a regulating valve core collar, and the regulating valve core is provided with a high-speed regulating limit platform matched with the regulating valve core collar.
6. The device as claimed in claim 1, wherein the low speed valve core and the regulating valve core are coaxially matched, the middle part of the matching section is a thread pair, the part close to the high speed valve seat is in transition fit, and the part far from the high speed valve seat is in clearance fit.
7. The device as claimed in claim 1, wherein the regulating valve core is coaxially matched with the outer valve body, the part of the matching section close to the high-speed valve seat is a thread pair, and the part far from the high-speed valve seat is in transition fit.
8. The compressed high-low two-speed adjusting valve device of the vehicle shock absorber as claimed in claim 1, wherein a low-speed adjusting knob is provided at one end of the low-speed valve core extending out of the high-speed adjusting knob, a mounting hole is provided at an end portion of the low-speed valve core, the mounting hole and an outer side surface of the low-speed adjusting knob are circumferentially fixed through a matching positioning surface, and the low-speed adjusting knob and the low-speed valve core are axially fixed through a screw.
9. The compression high-low two-speed adjusting valve device of the vehicle shock absorber as claimed in claim 1, wherein a high-speed knob handle is arranged on the outer side surface of the high-speed adjusting knob, and the high-speed knob handle and the high-speed adjusting knob are circumferentially fixed through a matching positioning surface and axially fixed through a screw.
10. The compressed high-low two-speed adjusting valve device of the vehicle shock absorber as claimed in claim 1, wherein sealing rings are respectively arranged between the low-speed valve core and the adjusting valve core, between the low-speed valve core and the high-speed adjusting knob, between the adjusting valve core and the outer valve body, and between the high-speed adjusting knob and the high-speed knob fixing sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548343.8A CN114263698B (en) | 2021-12-17 | 2021-12-17 | Compression high-low two-speed adjusting valve device of vehicle shock absorber |
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| CN202111548343.8A CN114263698B (en) | 2021-12-17 | 2021-12-17 | Compression high-low two-speed adjusting valve device of vehicle shock absorber |
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| CN114263698B CN114263698B (en) | 2022-12-09 |
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| JPH08159202A (en) * | 1994-11-30 | 1996-06-21 | Kayaba Ind Co Ltd | Pressure side damping force adjusting device of front fork |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114263698B (en) | 2022-12-09 |
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