CN206329667U - Adjustable-damping shock absorber - Google Patents
Adjustable-damping shock absorber Download PDFInfo
- Publication number
- CN206329667U CN206329667U CN201621459856.6U CN201621459856U CN206329667U CN 206329667 U CN206329667 U CN 206329667U CN 201621459856 U CN201621459856 U CN 201621459856U CN 206329667 U CN206329667 U CN 206329667U
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- valve
- rod
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- oil
- piston rod
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- 238000013016 damping Methods 0.000 title claims abstract description 35
- 230000035939 shock Effects 0.000 title claims abstract description 26
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 11
- 238000003754 machining Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009519 contusion Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model is related to absorber technical field, and there is provided a kind of adjustable-damping shock absorber.It includes dashpot, and dashpot, which includes being provided with piston, piston in cylinder body, cylinder body, is provided with piston rod, and cylinder body is provided with the regulating valve connected with plunger shaft；Wherein, piston rod includes being provided with regulating valve stem in hollow piston rod, hollow piston rod；Regulating valve includes being provided with valve pocket in valve seat, valve seat；Valve pocket installation cavity one end open is used to load valve pocket, and the valve pocket installation cavity other end is provided with the first flow being in communication with the outside, and valve pocket installation cavity side is provided with the second flow channel being in communication with the outside；Valve rod is provided with the middle part of valve pocket, sleeve side wall is provided with oil-through hole；Valve rod protrudes from positioned at end described in valve pocket installation cavity and spanner is provided with valve pocket and protuberance；The end that valve rod is located at the other end described in valve pocket installation cavity is provided with shaft orientation flowing channel of the opening towards first flow vertically, and the side-walls of shaft orientation flowing channel correspondence oil-through hole are provided with radial flow path.The utility model is simple in construction, is easy to manufacture to assemble.
Description
Technical Field
The utility model relates to a shock absorber technical field, specifically speaking relates to a shock absorber with adjustable damping.
Background
In the field of vehicles, in order to accelerate vibration attenuation between a vehicle frame and a vehicle body to improve ride comfort of the vehicle, it is generally necessary to provide a shock absorber at the vehicle body. In the case of a damping adjustable shock absorber, the damping adjustable shock absorber generally includes an oil cylinder, the oil cylinder generally includes a cylinder body, a piston rod disposed inside the cylinder body, and a regulating valve disposed at the bottom of the cylinder body, and the damping adjustment can be preferably performed by adjusting the size of an orifice through which oil passes at the piston rod or at the regulating valve.
As shown in fig. 1, the existing piston rods for damping adjustable shock absorbers all include a hollow piston rod 1, a valve rod 2 is arranged inside the hollow piston rod 1, one end of the hollow piston rod 1 is provided with an oil inlet 3, the other end of the hollow piston rod is provided with an adjusting handle 4, the valve rod 2 is matched with the oil inlet 3 through a compression spring 5, the adjusting handle 4 is screwed, the elasticity of the compression spring 5 can be adjusted, the size of a gap between the valve rod 2 and the oil inlet 3 is changed, and damping adjustment can be achieved. Although the existing piston rod is wide in application range, the requirement on machining precision is high, once a fault occurs, the scrapping cost is high, the requirement on the rod diameter is high, and the rod diameter is larger and is more than or equal to 20 mm.
Fig. 2 is a schematic view of a regulator valve in a conventional damping adjustable shock absorber. In the reciprocating process of the piston rod of the shock absorber, oil can flow in or flow out through the triangular inclined hole b at the end part of the valve core a, and the valve core a is pressed against the oil guide hole d of the valve seat c through a spring, so that the valve opening area at the triangular inclined hole b can be preferably adjusted by rotating the adjusting knob e at the valve core a, and the damping adjustment of the shock absorber can be realized. Although the purpose of damping gear adjustment can be achieved through the design, the machining precision of the fit size between the valve core assembly and the valve seat c is high, the structure is complex, the cost is high, the assembly difficulty is high, and the rejection rate is high.
Based on the above, the damping adjustable shock absorber in the prior art generally has the problems of complex structure, higher manufacturing cost and difficult assembly.
SUMMERY OF THE UTILITY MODEL
The present invention provides a damping adjustable shock absorber which overcomes some or some of the disadvantages of the prior art.
According to the utility model discloses a damping adjustable shock absorber, it includes the damping hydro-cylinder, and the damping hydro-cylinder includes the cylinder body, is equipped with the piston in the cylinder body, and piston department is equipped with the piston rod, and the cylinder body is equipped with the governing valve that communicates with the piston chamber; wherein,
the piston rod comprises a hollow piston rod, a valve rod mounting hole is formed in the middle of the hollow piston rod in a penetrating mode along the axial direction, and an adjusting valve rod is arranged in the valve rod mounting hole; one end of the hollow piston rod is connected with a frame ring seat, and the other end of the hollow piston rod is connected with a valve system connecting rod; a matching groove hole for the adjusting valve rod to extend into and a stroke hole communicated with the matching groove hole are formed in the ring frame seat, and a deflector rod connected with the adjusting valve rod is arranged at the stroke hole and used for driving the adjusting valve rod to rotate; an assembly hole for assembling the hollow piston rod is formed in the position of the valve system connecting rod, and the side wall and the bottom wall of the assembly hole are hermetically matched with the hollow piston rod; an oil inlet hole communicated with the assembling hole is further axially formed in the position of the valve system connecting rod, a first oil passage matched with the oil inlet hole is axially formed in the position of the end face of the adjusting valve rod, and a second oil passage communicated with the first oil passage is radially formed in the position of the side wall of the adjusting valve rod; a first oil outlet hole is formed in the hollow piston rod corresponding to the second oil passage, an oil outlet cavity is formed by the assembly hole corresponding to the first oil outlet hole, and a second oil outlet hole communicated with the outside is formed in the oil outlet cavity;
the regulating valve comprises a valve seat, a valve sleeve mounting cavity is arranged in the valve seat, and a valve sleeve is arranged in the valve sleeve mounting cavity; one end of the valve sleeve mounting cavity is provided with an opening for mounting a valve sleeve, the other end of the valve sleeve mounting cavity is provided with a first flow channel communicated with the outside, and one side of the valve sleeve mounting cavity is provided with a second flow channel communicated with the outside; a valve rod mounting cavity is axially arranged in the middle of the valve sleeve in a penetrating manner, and an oil passing hole for communicating the second flow passage with the valve rod mounting cavity is formed in the side wall of the valve sleeve; a valve rod is inserted into the valve rod mounting cavity, one end of the valve rod, which is positioned in the valve sleeve mounting cavity, protrudes out of the valve sleeve, and a spanner is arranged at the protruding part; an axial flow channel with an opening facing the first flow channel is axially arranged at the end face of the valve rod, which is positioned at the other end of the valve sleeve mounting cavity, and a radial flow channel is also arranged at the side wall of the axial flow channel, which corresponds to the oil passing hole.
The utility model discloses in, fluid can be through the inlet port of valve system connecting rod department, through first oilway way, second oilway way, first oil outlet and the chamber of producing oil back in proper order, flows from second oil outlet department. In the process, the poking rod is poked to drive the adjusting valve rod to rotate, so that the second oil passage can rotate relative to the first oil outlet hole; when the second oil path channel is completely staggered with the first oil outlet, the second oil path channel is completely blocked, and the damping value is maximum at the moment; when the second oil path channel is completely exposed at the first oil outlet hole, the damping value is minimum at the moment. Through the structure, the stepless damping adjustment can be realized, so that the problem of pause and contusion of the conventional piston rod during gear shifting is better solved, and the structure is simpler and is convenient to process. Additionally, because the utility model discloses abandoned current spring structure to make hollow piston rod's pole footpath possible littleer, can be less than 13 mm.
The utility model discloses in, at the piston rod reciprocating motion's of shock absorber in-process, fluid can follow first runner, axial runner, radial runner, cross oilhole and second runner stream and advance or flow, can adjust the relative position between radial runner and the oilhole through rotating the spanner to can be through the regulation to the overlapping area size of radial runner and cross the oilhole, and realize the regulation of damping value. Through this kind of structure, not only can realize the electrodeless regulation of damping value and then improve the travelling comfort in the accommodation process, moreover to the requirement of machining precision relatively lower and simple structure to greatly reduced manufacturing cost and assembly degree of difficulty, and can dismantle and maintain and then the durability also preferred.
Preferably, a star-shaped ring is arranged between the adjusting valve rod and the hollow piston rod. Thereby the sealing performance between the adjusting valve rod and the hollow piston rod can be better improved.
Preferably, the adjusting valve rod is provided with a deflector rod mounting hole along the radial direction, and the deflector rod is connected with the adjusting valve rod through the deflector rod mounting hole. The deflector rod is connected with the adjusting valve rod through the deflector rod mounting hole. Thereby being convenient for the deflector rod to be connected with the adjusting valve rod.
Preferably, the valve rod is also provided with a limiting rod mounting hole along the radial direction, and a limiting rod is arranged in the limiting rod mounting hole; the limiting rod extends out of the limiting rod mounting hole, a limiting rod stroke port is arranged at the valve sleeve and used for being matched with the limiting rod to limit the rotating angle of the valve rod, and at least the radial flow channel can be enabled to be transited between a completely open state and a completely closed state in the rotating process. Thereby enabling the user to make a better damping adjustment.
Preferably, at least one first sealing ring is arranged between the valve sleeve and the valve sleeve mounting cavity. Thereby better improving the sealing performance between the valve sleeve and the valve sleeve installation cavity.
Preferably, a second sealing ring is arranged between the valve rod and the valve rod mounting cavity. Thereby preferably improving the sealing performance between the valve rod and the valve rod installation cavity.
Preferably, the outer side wall of the valve sleeve is provided with a fastening hole, and the valve seat is radially provided with a fastening screw hole corresponding to the fastening hole; and fastening screws are arranged in the fastening screw holes and extend into the fastening holes. Thereby preferably realizing the fixed connection between the valve sleeve and the valve seat.
Drawings
FIG. 1 is a schematic view of a prior art piston rod;
FIG. 2 is a schematic view of a prior art regulator valve;
FIG. 3 is a schematic view of a damping cylinder in embodiment 1
Fig. 4 is a schematic view of a piston rod in embodiment 1;
FIG. 5 is a schematic view of a regulator valve in embodiment 1;
fig. 6 is a schematic view of a valve core structure in embodiment 1;
FIG. 7 is a schematic sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 6 with the radial flow passages completely occluded;
FIG. 9 is a schematic cross-sectional view taken along line B-B of FIG. 6 with the radial flow channels fully open;
FIG. 10 is a schematic cross-sectional view taken along line C-C of FIG. 6 with the radial flow passages completely occluded;
fig. 11 is a schematic cross-sectional view of the radial flow channel at C-C in fig. 6 when the radial flow channel is fully open.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention only and are not limiting.
Example 1
As shown in fig. 3, the embodiment provides a damping adjustable shock absorber, which includes a damping cylinder 10, the damping cylinder 10 includes a cylinder body 11, a piston 12 is disposed in the cylinder body 11, a piston rod 13 is disposed at the position of the piston 12, and the cylinder body 11 is provided with an adjusting valve 14 communicated with a piston cavity.
As shown in fig. 4, the piston rod 13 in this embodiment includes a hollow piston rod 210, a valve rod mounting hole is axially formed in the middle of the hollow piston rod 210 in a penetrating manner, and an adjusting valve rod 220 is disposed in the valve rod mounting hole; one end of the hollow piston rod 210 is connected to a ring holder 230, and the other end of the hollow piston rod 210 is connected to a valve system connecting rod 240.
The frame ring seat 230 is provided with a matching slot 231 for the adjusting valve rod 220 to extend into and a stroke hole 232 communicated with the matching slot 231, the stroke hole 232 is provided with a shift lever 250 connected with the adjusting valve rod 220, and the shift lever 250 is used for driving the adjusting valve rod 220 to rotate.
An assembly hole 241 for assembling the hollow piston rod 210 is formed in the valve system connecting rod 240, and the side wall and the bottom wall of the assembly hole 241 are hermetically matched with the hollow piston rod 210; an oil inlet 242 communicated with the assembling hole 241 is further axially arranged at the valve system connecting rod 240, a first oil passage 221 matched with the oil inlet 242 is axially arranged at the end face of the adjusting valve rod 220, and a second oil passage 222 communicated with the first oil passage 221 is radially arranged at the side wall of the adjusting valve rod 220.
The hollow piston rod 210 is provided with a first oil outlet hole 211 corresponding to the second oil passage 222, the assembly hole 241 is configured into an oil outlet chamber 243 corresponding to the first oil outlet hole 211, and the oil outlet chamber 243 is provided with a second oil outlet hole 244 communicated with the outside.
In this embodiment, 2 star rings 260 are disposed between the adjusting valve rod 220 and the hollow piston rod 210, a driving lever mounting hole is radially disposed at the adjusting valve rod 220, and the driving lever 250 is in threaded connection with the adjusting valve rod 220 through the driving lever mounting hole.
As shown in FIG. 5, the regulator valve 14 includes a valve seat 410, a valve sleeve mounting cavity is formed in the valve seat 410, and a valve sleeve 420 is formed in the valve sleeve mounting cavity; one end of the valve sleeve installation cavity is opened for installing the valve sleeve 420, the other end of the valve sleeve installation cavity is provided with a first flow passage 411 communicated with the outside, and one side of the valve sleeve installation cavity is provided with a second flow passage 412 communicated with the outside; a valve rod mounting cavity is axially arranged in the middle of the valve sleeve 420 in a penetrating manner, and an oil passing hole 421 for communicating the second flow passage 412 with the valve rod mounting cavity is arranged on the side wall of the valve sleeve 420; a valve rod 430 is inserted into the valve rod installation cavity, the valve rod 430 is positioned at one end of the valve sleeve installation cavity and protrudes out of the valve sleeve 420, and a wrench 440 is arranged at the protruding part; an axial flow passage 431 with an opening facing the first flow passage 411 is axially arranged on the end surface of the valve rod 430 at the other end of the valve sleeve mounting cavity, and a radial flow passage 432 is further arranged on the axial flow passage 431 corresponding to the side wall of the oil passing hole 421.
In this embodiment, the valve rod 430 is further provided with a limiting rod mounting hole 433 along the radial direction, and a limiting rod 450 is arranged in the limiting rod mounting hole 433; the limiting rod 450 extends out of the limiting rod mounting hole 433, a limiting rod stroke port 422 is arranged at the position of the valve sleeve 420, and the limiting rod stroke port 422 is used for being matched with the limiting rod 450 to limit the rotation angle of the valve rod 430 and at least ensure that the radial flow channel 432 can be transited between a completely open state and a completely closed state in the rotation process.
In this embodiment, at least one first seal 423 is disposed between the valve housing 420 and the valve housing mounting cavity, and a second seal 434 is disposed between the valve rod 430 and the valve rod mounting cavity.
In this embodiment, the outer side wall of the valve sleeve 420 is provided with a fastening hole 424, and the valve seat 410 corresponding to the fastening hole 424 is provided with a fastening screw hole 413 along the radial direction; a fastening screw 460 is arranged in the fastening screw hole 413, and the fastening screw 460 extends into the fastening hole 424.
As shown in fig. 6, one end of the valve rod 430 protrudes out of the valve housing 420 to form a wrench part 430a, the outer side wall of the valve housing 420 is provided with at least one first sealing groove 510 along the circumferential direction, and the first sealing groove 510 is used for installing a sealing ring; the outer side wall of the valve rod 430 is circumferentially provided with a second sealing groove 520, the second sealing groove 520 is used for installing a sealing ring, and the outer side wall of the valve sleeve 420 is provided with a fastening hole 424.
As shown in fig. 7, the wrench part 430a is configured in a rod shape having a cross-section of a regular hexagon so as to be preferably engaged with the wrench 440.
In this embodiment, by rotating the wrench portion 430a, the overlapping area between the radial flow passage 432 and the oil passing hole 421 can be adjusted, so as to preferably realize the adjustment of the damping value; and during the adjustment process, the rotation angle of the valve rod 430 can be preferably limited by the matching of the limiting rod 450 and the limiting rod stroke port 422.
In this embodiment: when the wrench part 430a is rotated to enable the limiting rod 450 to be located at the position shown in fig. 8, the relative position between the radial flow passage 432 and the oil passing hole 421 is shown in fig. 10, at this time, the radial flow passage 432 is completely blocked, so that the damping value is maximum, and the shock absorber is in the hardest state; when the wrench part 430a is rotated to make the limiting rod 450 be at the position shown in fig. 9, the relative position between the radial flow passage 432 and the oil passing hole 421 is as shown in fig. 11, and at this time, the radial flow passage 432 is fully opened, so that the damping value is minimum and the shock absorber is in the softest state.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (5)
1. The damping adjustable shock absorber comprises a shock absorption oil cylinder (10), wherein the shock absorption oil cylinder (10) comprises a cylinder body (11), a piston (12) is arranged in the cylinder body (11), a piston rod (13) is arranged at the position of the piston (12), and the cylinder body (11) is provided with an adjusting valve (14) communicated with a piston cavity; the method is characterized in that:
the piston rod (13) comprises a hollow piston rod (210), a valve rod mounting hole is formed in the middle of the hollow piston rod (210) in a penetrating mode along the axial direction, and an adjusting valve rod (220) is arranged in the valve rod mounting hole; one end of the hollow piston rod (210) is connected with a frame ring seat (230), and the other end of the hollow piston rod (210) is connected with a valve system connecting rod (240); a matching slot hole (231) for the adjusting valve rod (220) to extend into and a stroke hole (232) communicated with the matching slot hole (231) are formed in the ring frame seat (230), a shifting lever (250) connected with the adjusting valve rod (220) is arranged in the stroke hole (232), and the shifting lever (250) is used for driving the adjusting valve rod (220) to rotate; an assembly hole (241) for assembling the hollow piston rod (210) is formed in the position of the valve system connecting rod (240), and the side wall and the bottom wall of the assembly hole (241) are hermetically matched with the hollow piston rod (210); an oil inlet hole (242) communicated with the assembling hole (241) is further axially arranged at the valve system connecting rod (240), a first oil channel (221) matched with the oil inlet hole (242) is axially arranged at the end face of the adjusting valve rod (220), and a second oil channel (222) communicated with the first oil channel (221) is radially arranged at the side wall of the adjusting valve rod (220); a first oil outlet hole (211) is formed in the position, corresponding to the second oil passage channel (222), of the hollow piston rod (210), an oil outlet cavity (243) is formed in the position, corresponding to the first oil outlet hole (211), of the assembly hole (241), and a second oil outlet hole (244) communicated with the outside is formed in the position of the oil outlet cavity (243);
the regulating valve (14) comprises a valve seat (410), a valve sleeve mounting cavity is arranged in the valve seat (410), and a valve sleeve (420) is arranged in the valve sleeve mounting cavity; one end of the valve sleeve mounting cavity is opened for mounting a valve sleeve (420), the other end of the valve sleeve mounting cavity is provided with a first flow channel (411) communicated with the outside, and one side of the valve sleeve mounting cavity is provided with a second flow channel (412) communicated with the outside; a valve rod mounting cavity is axially arranged in the middle of the valve sleeve (420) in a penetrating manner, and an oil passing hole (421) for communicating the second flow passage (412) with the valve rod mounting cavity is formed in the side wall of the valve sleeve (420); a valve rod (430) is inserted into the valve rod mounting cavity, one end of the valve rod (430) positioned in the valve sleeve mounting cavity protrudes out of the valve sleeve (420), and a spanner (440) is arranged at the protruding part; an axial flow passage (431) with an opening facing the first flow passage (411) is axially arranged at the end face of the valve rod (430) at the other end of the valve sleeve mounting cavity, and a radial flow passage (432) is further arranged at the position, corresponding to the side wall of the oil passing hole (421), of the axial flow passage (431).
2. The adjustable damping shock absorber according to claim 1, wherein: a star-shaped ring (260) is arranged between the adjusting valve rod (220) and the hollow piston rod (210).
3. The adjustable damping shock absorber according to claim 1, wherein: the adjusting valve rod (220) is provided with a deflector rod mounting hole along the radial direction, and the deflector rod (250) is connected with the adjusting valve rod (220) through the deflector rod mounting hole.
4. The adjustable damping shock absorber according to claim 1, wherein: a limiting rod mounting hole (433) is further formed in the valve rod (430) along the radial direction, and a limiting rod (450) is arranged in the limiting rod mounting hole (433); the limiting rod (450) extends out of the limiting rod mounting hole (433), a limiting rod stroke port (422) is arranged at the position of the valve sleeve (420), and the limiting rod stroke port (422) is used for being matched with the limiting rod (450) to limit the rotation angle of the valve rod (430) and at least ensure that the radial flow channel (432) can be transited between a completely opening state and a completely blocking state in the rotation process.
5. The adjustable damping shock absorber according to claim 1, wherein: the outer side wall of the valve sleeve (420) is provided with a fastening hole (424), and a fastening screw hole (413) is radially arranged at the position, corresponding to the fastening hole (424), of the valve seat (410); a fastening screw (460) is arranged in the fastening screw hole (413), and the fastening screw (460) extends into the fastening hole (424).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459856.6U CN206329667U (en) | 2016-12-29 | 2016-12-29 | Adjustable-damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459856.6U CN206329667U (en) | 2016-12-29 | 2016-12-29 | Adjustable-damping shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206329667U true CN206329667U (en) | 2017-07-14 |
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ID=59293339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621459856.6U Active CN206329667U (en) | 2016-12-29 | 2016-12-29 | Adjustable-damping shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206329667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145565A (en) * | 2019-06-28 | 2019-08-20 | 杭州金士顿实业有限公司 | The seat damper of damping-force adjustable |
-
2016
- 2016-12-29 CN CN201621459856.6U patent/CN206329667U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145565A (en) * | 2019-06-28 | 2019-08-20 | 杭州金士顿实业有限公司 | The seat damper of damping-force adjustable |
| CN110145565B (en) * | 2019-06-28 | 2023-09-29 | 杭州金士顿实业有限公司 | Damping force adjustable seat damper |
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