CN212536510U - Electromagnetic switch valve for adjusting damping of shock absorber - Google Patents
Electromagnetic switch valve for adjusting damping of shock absorber Download PDFInfo
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- CN212536510U CN212536510U CN201922360245.6U CN201922360245U CN212536510U CN 212536510 U CN212536510 U CN 212536510U CN 201922360245 U CN201922360245 U CN 201922360245U CN 212536510 U CN212536510 U CN 212536510U
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Abstract
The utility model provides an electromagnetic switch valve for adjusting the damping of a shock absorber, which belongs to the field of automobile parts and comprises an electromagnetic drive sub-assembly and a valve body sub-assembly; the valve body sub-assembly comprises a main valve and a pilot valve; the pilot valve comprises an inner valve sleeve and a control valve core, wherein the inner valve sleeve is provided with an axial oil inlet opening and closing hole matched with the shaft end of the control valve core and a circumferential oil outlet opening and closing hole matched with the peripheral side of the control valve core; the electromagnetic driving sub-assembly drives the control valve core to be close to or far away from the inner valve sleeve; the side surface of one end of the control valve core, which is far away from the inner valve sleeve, is provided with evenly distributed bottom holes; one surface of the inner valve sleeve, which is provided with the axial oil inlet opening and closing hole, can be in butt fit with one surface of the control valve core, which is far away from the electromagnetic driving sub-assembly. When the shock absorber works, axial limiting is carried out on one surface, far away from the electromagnetic driving sub-assembly, of the valve core and one surface, close to the electromagnetic driving sub-assembly, of the inner valve sleeve, so that two-gear adjustment of damping of the shock absorber is achieved.
Description
Technical Field
The utility model relates to an automobile parts field particularly, relates to an electromagnetic switch valve for adjusting bumper shock absorber damping.
Background
The traditional shock absorber has a fixed damping characteristic and provides a fixed damping characteristic curve in the stretching or compressing process, the adjustable shock absorber provides a characteristic field, and the system timely selects different damping in the field according to working conditions (road surface conditions, braking, acceleration, turning, driver's will and the like) so as to restrain the vibration of a vehicle body, prevent tires from jumping, improve the comfort of the whole vehicle, shorten the braking distance and increase the controllability; compared with an electromagnetic valve, the electromagnetic switch valve provides two-gear adjustment and has the advantages of low working current, low energy consumption and the like.
The patent with the publication number of CN110360261A provides an electromagnetic valve for adjusting damping of a shock absorber, wherein the axial positioning of an inner valve sleeve and a control valve core in a pilot valve is realized by abutting a convex ring of a bottom hole arranged on the control valve core with an end face of one end of the inner valve sleeve close to an electromagnetic drive sub-assembly, so that a first column section shields an axial oil inlet opening and closing hole of the inner valve sleeve, but the axial oil inlet opening and closing hole is not completely sealed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be used for adjusting damped electromagnetic switch valve of bumper shock absorber aims at solving the above-mentioned problem that is used for adjusting the damped electromagnetic switch valve of bumper shock absorber to exist among the prior art.
The utility model discloses a realize like this:
an electromagnetic switch valve for adjusting the damping of a shock absorber comprises an electromagnetic drive sub-assembly and a valve body sub-assembly;
the valve body sub-assembly comprises a main valve and a pilot valve, the main valve is fixedly connected with the electromagnetic driving sub-assembly through an outer valve sleeve, and the pilot valve is arranged in the outer valve sleeve;
the pilot valve comprises an inner valve sleeve and a control valve core, wherein the inner valve sleeve is provided with an axial oil inlet opening and closing hole matched with the shaft end of the control valve core and a circumferential oil outlet opening and closing hole matched with the circumferential side of the control valve core;
the electromagnetic driving sub-assembly is used for driving the control valve core to be close to or far away from the inner valve sleeve;
a bottom hole capable of communicating the circumferential oil outlet opening and closing hole and the pilot oil outlet through-flow section hole is formed in the side face of one end, far away from the inner valve sleeve, of the control valve core;
the pilot oil outlet through-flow section hole is used for enabling oil of the pilot valve to flow out of the electromagnetic switch valve for adjusting damping of the shock absorber;
one surface of the inner valve sleeve, which is provided with an axial oil inlet opening and closing hole, can be in butt fit with one surface of the control valve core, which is far away from the electromagnetic drive sub-assembly;
and the control valve core is provided with an axial through hole for communicating the pilot valve with the electromagnetic drive sub-assembly.
In an embodiment of the present invention, the electromagnetic driving subassembly includes a housing subassembly, a solenoid coil and a magnetic core subassembly, the solenoid coil and the magnetic core subassembly are disposed in the housing subassembly, the outer valve sleeve is fixedly connected to the housing subassembly, the solenoid coil is used for driving the magnetic core subassembly to slide in the housing subassembly, the control valve core is kept away from one end of the inner valve sleeve and the magnetic core subassembly can be butt-fitted.
In an embodiment of the present invention, the control valve core includes a first column section and a second column section, the second column section is in abutting fit with the magnetic core sub-assembly, and the first column section is fixedly connected to one end of the second column section away from the magnetic core sub-assembly;
the circumferential surface of the second column section is used for blocking the circumferential oil outlet opening and closing hole, and the top of the first column section is used for abutting against the inner valve sleeve to perform axial positioning on the control valve core.
The utility model discloses an in one embodiment, the control case with still be provided with first pressure spring between the inner valve cover, first pressure spring makes the control case has and keeps away from the trend of motion of inner valve cover.
In an embodiment of the present invention, the valve body sub-assembly further includes a main valve element and a second pressure spring;
the main valve core is arranged in the outer valve sleeve, and the inner valve sleeve is far away from one side of the control valve core; the main valve core is axially provided with an oil inlet through hole for oil to flow from the main valve to the pilot valve, one end of the second pressure spring acts on the main valve core, and the other end of the second pressure spring acts on the inner valve sleeve.
The utility model discloses an in the embodiment, be provided with the main valve oil outlet on the outer valve sleeve, the side of main valve core can block up the main valve oil outlet.
In an embodiment of the present invention, the axial oil inlet opening and closing hole on the inner valve sleeve is at least one.
The utility model has the advantages that: when the shock absorber works, the axial limiting is carried out on one surface of the control valve core, which is far away from the electromagnetic driving sub-assembly, and one surface of the inner valve sleeve, which is close to the electromagnetic driving sub-assembly; when the shock absorber is in an uncharged initial state, a control valve core of the pilot valve is tightly attached to the end face, close to the valve body sub-assembly, of the electromagnet sub-assembly, the pilot valve has certain oil outlet, the opening of the main valve is certain, and the characteristic corresponds to that of the shock absorber; when the power is switched on to a certain value, the opening degree of the pilot valve is small, so that the opening degree of the main valve is reduced (the pressure is different, the opening degree is different), and the two-gear adjustment of the damping of the shock absorber is realized corresponding to the other characteristic of the shock absorber.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a sectional view of an electromagnetic switching valve for adjusting damping of a shock absorber according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an electromagnetic drive subassembly according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a valve body subassembly provided by an embodiment of the present invention;
fig. 4 is a cross-sectional view of the outer valve sleeve provided by the embodiment of the present invention when a pilot valve is provided in the outer valve sleeve;
fig. 5 is a cross-sectional view of an inner valve sleeve provided by an embodiment of the present invention;
fig. 6 is a cross-sectional view of a control valve cartridge according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first viewing angle of a control valve element according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second viewing angle of the control valve cartridge according to the embodiment of the present invention;
fig. 9 is a schematic structural view of an inner valve sleeve having three axial oil inlet opening and closing holes;
FIG. 10 is a sectional view of the electromagnetic switch valve in which the control spool is provided with an axial through hole;
FIG. 11 is a cross-sectional view of a control valve cartridge having an axial through bore.
Icon: 1-an electromagnetic drive subassembly; 2-valve body sub-assembly; 3-an electromagnetic coil; 4-a housing subassembly; 5-magnetic core subassembly; 6-one-way overflow valve; 7-a pilot valve; 8-a main valve; 9-inner valve sleeve; 10-control valve core; 11-a first compression spring; 12-an outer valve sleeve; 13-main spool; 14-a second pressure spring; 15-pilot valve oil outlet; 17-oil inlet through holes; 18-main valve oil outlet; 19-axial oil inlet opening and closing holes; 20-circumferential oil outlet opening and closing holes; 21-a first column section; 22-a second section; 23-bottom hole; 24-through slots; 25-axial through hole.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Examples
Referring to fig. 1, the electromagnetic switch valve for adjusting damping of a shock absorber includes an electromagnetic driving sub-assembly 1 and a valve body sub-assembly 2;
the electromagnetic driving sub-assembly 1 is in interference connection with the valve body sub-assembly 2, and the electromagnetic driving sub-assembly 1 provides power for the valve body sub-assembly 2.
Referring to fig. 2, the electromagnetic driving subassembly 1 includes an electromagnetic coil 3, a housing subassembly 4 and a magnetic core subassembly 5, the electromagnetic coil 3 is disposed in a cavity formed by the housing subassembly 4 for fixing, and the magnetic core subassembly 5 is in clearance fit with a bearing disposed in the housing subassembly 4, so that the magnetic core subassembly 5 can axially slide in the cavity of the housing subassembly 4. The electromagnetic coil 3 comprises a magnetic circuit consisting of a back yoke piece, a shell and a back yoke sleeve on the shell, and when the electromagnetic coil 3 is electrified, the magnetic core sub-assembly 5 is subjected to electromagnetic force to generate axial displacement.
Referring to fig. 3 and 4, the valve body subassembly 2 includes a pilot valve 7 and a main valve 8, in which the pilot valve 7 includes an inner valve sleeve 9, a control valve core 10 and a first pressure spring 11, the control valve core 10, the inner valve sleeve 9 and the cavity of the outer valve sleeve 12 are in clearance fit, and the control valve core 10 is disposed at one end of the inner valve sleeve 9 close to the magnetic core subassembly 5 and can be abutted and matched with the magnetic core subassembly 5. The first pressure spring 11 is arranged between the control valve core 10 and the inner valve sleeve 9, and the control valve core 10 always has a movement tendency close to the magnetic core subassembly 5 by the elasticity of the first pressure spring 11. When the solenoid 3 is not energized, the control valve 10 is in an initial state. One surface of the inner valve sleeve 9, which is provided with the axial oil inlet opening and closing hole 19, and one surface of the control valve core 10, which is far away from the electromagnetic driving sub-assembly 1, can be in butt fit, namely, one surface of the control valve core 10, which is far away from the electromagnetic driving sub-assembly 1, and one surface of the inner valve sleeve 9, which is close to the electromagnetic driving sub-assembly 1, are axially limited.
The main valve 8 comprises a main valve core 13 and a second pressure spring 14, and the main valve core 13 is arranged on one side, away from the control valve core 10, of the inner valve sleeve 9 in the outer valve sleeve 12; the main valve core 13 is axially provided with an oil inlet through hole 17 matched with the axial oil inlet opening and closing hole 19, namely, the main valve 8 in oil can be introduced into the pilot valve 7 through the oil inlet through hole 17, the outer valve sleeve 12 is provided with a main valve oil outlet hole 18, the side surface of the main valve core 13 can block the main valve oil outlet hole 18, and the main valve oil outlet hole 18 can be gradually opened when the main valve core 13 moves to be close to the pilot valve 7. One end of a second pressure spring 14 acts on the main valve core 13, and the other end acts on the inner valve sleeve 9. Specifically, an elastic gasket is arranged at one end of the inner valve sleeve 9 close to the main valve element 13, and one end of the second compression spring 14 far away from the main valve element 13 acts on the elastic gasket.
Referring to fig. 5, an inner valve sleeve 9 of the pilot valve 7 is provided with an axial oil inlet opening and closing hole 19 matched with a shaft end of the control valve core 10 and a circumferential oil outlet opening and closing hole 20 matched with the circumferential side of the control valve core 10, the control of the opening and closing size of the axial oil inlet opening and closing hole 19 can be realized by making the control valve core 10 close to or far from the axial oil inlet opening and closing hole 19, and after the opening and closing size of the axial oil inlet opening and closing hole 19 is controlled, the oil pressure of a cavity formed among the outer valve sleeve 12, the main valve core 13 and the inner valve sleeve 9 can be controlled, so that the main valve core 13 is displaced under the action of the second pressure spring 14, and the size of the opening on the main valve.
Referring to fig. 6, 7 and 8, in particular, the control valve core 10 includes a first column section 21 and a second column section 22, the second column section 22 is in abutting fit with the magnetic core sub-assembly 5, and the first column section 21 is fixedly connected to one end of the second column section 22 away from the magnetic core sub-assembly 5; the connecting position of the first column section 21 and the second column section 22 forms a step, the circumferential surface of the second column section 22 is used for blocking the circumferential oil outlet opening and closing hole 20, the end surface of the first column section 21 is used for abutting against the inner valve sleeve 9 to control the axial positioning of the valve core 10, and when the first column section 21 abuts against the end surface of the inner valve sleeve 9, the first column section 21 is locked to axially enter the oil opening and closing hole 19.
It should be noted that, in this embodiment, the number of the axial oil inlet opening and closing holes 19 is one, and in other embodiments, the number of the axial oil inlet opening and closing holes 19 may be two, three, or other, and referring to fig. 9, it is possible to change the flow flux (flow cross section, pressure loss, flow rate) from the main valve 8 to the pilot valve 7 by appropriately increasing the number of the axial oil inlet opening and closing holes 19, but it is within the scope of the present application to change the conventional technology of the present application.
The oil inlet flow cross section of the pilot valve 7 is determined by the distance between the end surface of the first column section 21 of the control valve core 10 and the axial oil inlet opening and closing hole 19 of the inner valve sleeve 9, and the oil outlet flow cross section of the pilot valve 7 is determined by the relative position of the circumferential surface of the second column section 22 of the control valve core 10 and the circumferential oil outlet opening and closing hole 20. And a two-stage throttling mode of oil inlet throttling and oil outlet throttling is formed, so that the adjusting range of the electromagnetic valve is wider.
A bottom hole 23 is arranged on the side surface of one end of the control valve core 10 far away from the inner valve sleeve 9; the outer valve sleeve 12 is provided with a pilot valve oil outlet 15 for communicating the pilot valve 7 and allowing oil in the pilot valve 7 to flow out, but when the control valve core 10 is tightly attached to the electromagnetic drive sub-assembly 1, that is, when the control valve core 10 is in an initial state, if no additional channel is provided, the oil path is blocked, the oil cannot flow out from the pilot valve 7 and enter the pilot valve oil outlet 15, and the control valve core 10 must be pushed away from the electromagnetic drive sub-assembly 1 to generate a gap so that the oil can flow out from the pilot valve 7. In order to enable the control valve core 10 to have a channel for supplying oil to flow out of the pilot valve 7 when clinging to the electromagnetic drive sub-assembly 1, a through groove 24 is arranged on one surface of the control valve core 10 far away from the inner valve sleeve 9, so that the through groove 24 forms a pilot oil outlet through-flow cross section matched with the end surface of the electromagnetic drive sub-assembly 1 close to the control valve core 10, namely, the through groove 24 is matched with the end surface of the electromagnetic drive sub-assembly 1 close to the control valve core 10 to form a pilot oil outlet through-flow cross section hole in an initial state, and the bottom hole 23 can communicate the circumferential oil outlet opening and closing hole 20 with the. When the electromagnetic coil 3 is not electrified, the magnetic core subassembly 5 is in an initial state, and when the magnetic core subassembly is in the initial state, the magnetic core subassembly 5 is not subjected to electromagnetic force, so that the control valve core 10 is pushed to the end surface of the electromagnetic drive subassembly 1 under the action of the first pressure spring 11, the through groove 24 on the control valve core 10 forms a pilot oil through-flow cross-section hole, and oil in the pilot valve 7 is discharged out of the pilot valve 7 through the pilot oil through-flow cross-section hole and the pilot valve oil outlet 15. Correspondingly, when the electromagnetic coil 3 is energized, the magnetic core subassembly 5 moves towards the control valve core 10 due to the action of electromagnetic force, and along with the increase of the electromagnetic force, the magnetic core subassembly 5 pushes the control valve core 10 to move towards the direction away from the electromagnetic drive subassembly 1, so that the control valve core 10 pushes away from the electromagnetic drive subassembly 1 to form a gap, and a new oil outlet through-flow section is formed at the gap.
The rod part of the magnetic core sub-assembly 5 is hollow, a flow passage from the pilot valve 7 to the rear end of the magnetic core sub-assembly 5 (the end of the magnetic core sub-assembly 5 away from the pilot valve 7) is formed, and the liquid force formed by introducing the oil into the rear end of the magnetic core sub-assembly 5 can assist in moving the control valve core 10. In the initial state, the through groove 24 thus functions to introduce oil into the rear end of the core sub-assembly 5.
It should be noted that, in this embodiment, the through-flow section in the initial state is realized by the through-groove 24, so that the compression force and the refuting force of the shock absorber are in the middle value (neither maximum nor minimum), and the oil is introduced into the rear end of the magnetic core sub-assembly 5 to assist in moving the control valve core 10; in other embodiments, there may be no through-slot 24, the initial through-flow cross section is realized by the gap between the control valve core 10 and the outer valve sleeve 12, and an axial through-hole 25 is provided on the control valve core 10 to introduce oil into the rear end of the magnetic core sub-assembly 5 to assist in moving the control valve core 10, see fig. 10 and 11.
In this embodiment, a one-way overflow valve 6 is further disposed at a joint of the electromagnetic driving sub-assembly 1 and the valve body sub-assembly 2, and the one-way overflow valve 6 can unidirectionally communicate a cavity in the pilot valve 7 with the outside of the electromagnetic valve, so that liquid can be discharged outwards when the hydraulic pressure in the pilot valve 7 is too high; in other embodiments, the one-way overflow valve 6 may not be provided, see fig. 10; in addition, when the one-way overflow valve 6 is provided with an overflow hole and is not provided with an overflow spring or a steel ball or both, the oil flows out through the overflow hole, the pressure built by the pilot valve 7 is small, the through-flow section of the main valve 8 is large, the flow is maximum at the moment, and the initial state is not available.
The utility model discloses a theory of operation is: when the electromagnetic coil 3 is not electrified, the magnetic core subassembly 5 has no axial displacement, the first pressure spring 11 pushes the control valve core 10 to the end face of the electromagnetic drive subassembly 1, the through groove 24 on the control valve core 10, the flow channel of the electromagnetic drive subassembly 1 and the pilot valve oil outlet 15 form an oil outlet through-flow section when the pilot valve 7 is in an initial state, and at the moment, the main valve core 13 is in a middle position under the action of liquid force and the elastic force of the second pressure spring 14, so that the damping force of the shock absorber is provided.
When the electromagnetic coil 3 is electrified, the electromagnetic force applied to the magnetic core subassembly 5 gradually increases along with the increase of the current, when the electromagnetic force is greater than the elastic force of the first pressure spring 11 and the liquid force applied to the control valve core 10, the magnetic core subassembly 5 axially moves towards the inner valve sleeve 9, the end surface of the first column section 21 of the control valve core 10 shields the axial oil inlet opening and closing hole 19 of the inner valve sleeve 9, and the through-flow section of the axial oil inlet opening and closing hole 19 is reduced. The second section 22 of the control valve core 10 shields the circumferential oil outlet opening and closing hole 20, so that the through-flow section of the circumferential oil outlet opening and closing hole 20 is reduced; meanwhile, liquid enters the rear cavity of the magnetic core subassembly 5 through the axial through hole 25 of the control valve core 10, the sum of the liquid force and the electromagnetic force applied to the rear end of the control valve core 10 is larger than the liquid force applied to the front end, the control valve core 10 is pushed to the inner valve sleeve 9, the pilot valve 7 is closed at the moment, the pressure of the cavity formed between the inner valve sleeve 9 and the control valve core 10 is increased, the pressure of the cavity formed between the main valve core 13 and the outer valve sleeve 12 is also increased, the main valve core 13 is only towards the direction far away from the inner valve sleeve 9, so that the main valve oil outlet 18 is closed, the flow of the main valve oil outlet 18 is reduced along with the pressure, and the damping of.
When the shock absorber works, axial limiting is carried out on one surface, far away from the electromagnetic driving sub-assembly 1, of the valve core 10 and one surface, close to the electromagnetic driving sub-assembly 1, of the inner valve sleeve 9 through controlling, and when the shock absorber is in an uncharged initial state, the opening of the valve is fixed and corresponds to one characteristic of the shock absorber; when the power is switched on to a certain value, the opening degree of the pilot valve 7 is small, so that the opening degree of the main valve 8 is reduced (the pressure is different, the opening degree is different), and the two-gear adjustment of the damping of the shock absorber is realized corresponding to the other characteristic of the shock absorber.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An electromagnetic switch valve for adjusting the damping of a shock absorber is characterized by comprising an electromagnetic driving sub-assembly and a valve body sub-assembly;
the valve body sub-assembly comprises a main valve and a pilot valve, the main valve is fixedly connected with the electromagnetic driving sub-assembly through an outer valve sleeve, and the pilot valve is arranged in the outer valve sleeve;
the pilot valve comprises an inner valve sleeve and a control valve core, wherein the inner valve sleeve is provided with an axial oil inlet opening and closing hole matched with the shaft end of the control valve core and a circumferential oil outlet opening and closing hole matched with the circumferential side of the control valve core;
the electromagnetic driving sub-assembly is used for driving the control valve core to be close to or far away from the inner valve sleeve;
a bottom hole capable of communicating the circumferential oil outlet opening and closing hole and the pilot oil outlet through-flow section hole is formed in the side face of one end, far away from the inner valve sleeve, of the control valve core;
the pilot oil outlet through-flow section hole is used for enabling oil of the pilot valve to flow out of the electromagnetic switch valve for adjusting the damping of the shock absorber;
one surface of the inner valve sleeve, which is provided with an axial oil inlet opening and closing hole, can be in butt fit with one surface of the control valve core, which is far away from the electromagnetic drive sub-assembly;
and the control valve core is provided with an axial through hole for communicating the pilot valve with the electromagnetic drive sub-assembly.
2. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 1, wherein the electromagnetic drive subassembly includes a housing subassembly, an electromagnetic coil and a magnetic core subassembly, the electromagnetic coil and the magnetic core subassembly being disposed within the housing subassembly, the electromagnetic coil being configured to drive the magnetic core subassembly to slide within the housing subassembly, an end of the control valve spool remote from the inner valve sleeve being abuttable to engage the magnetic core subassembly.
3. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 2, wherein the control spool includes a first post segment and a second post segment, the second post segment being in abutting engagement with the magnetic core subassembly, the first post segment being fixedly attached to an end of the second post segment remote from the magnetic core subassembly;
the circumferential surface of the second column section is used for blocking the circumferential oil outlet opening and closing hole, and the top of the first column section is used for abutting against the inner valve sleeve to perform axial positioning on the control valve core.
4. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 1, wherein a first compression spring is further disposed between the control valve spool and the inner valve housing, and the first compression spring causes the control valve spool to have a tendency to move away from the inner valve housing.
5. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 1, wherein the valve body subassembly further includes a main spool and a second compression spring;
the main valve core is arranged in the outer valve sleeve, and the inner valve sleeve is far away from one side of the control valve core; the main valve core is axially provided with an oil inlet through hole for oil to flow from the main valve to the pilot valve, one end of the second pressure spring acts on the main valve core, and the other end of the second pressure spring acts on the inner valve sleeve.
6. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 5, wherein a main valve oil outlet hole is provided on the outer sleeve, and a side surface of the main valve spool blocks the main valve oil outlet hole.
7. The electromagnetic switch valve for adjusting damping of a shock absorber according to claim 1, wherein the axial oil inlet opening and closing hole of the inner valve housing is provided in at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360245.6U CN212536510U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic switch valve for adjusting damping of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360245.6U CN212536510U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic switch valve for adjusting damping of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212536510U true CN212536510U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922360245.6U Active CN212536510U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic switch valve for adjusting damping of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212536510U (en) |
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2019
- 2019-12-25 CN CN201922360245.6U patent/CN212536510U/en active Active
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