CN210461512U - Electromagnetic valve for adjusting damping of shock absorber - Google Patents
Electromagnetic valve for adjusting damping of shock absorber Download PDFInfo
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- CN210461512U CN210461512U CN201921265227.3U CN201921265227U CN210461512U CN 210461512 U CN210461512 U CN 210461512U CN 201921265227 U CN201921265227 U CN 201921265227U CN 210461512 U CN210461512 U CN 210461512U
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Abstract
The utility model provides a solenoid 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 electromagnetic drive sub-assembly comprises an electromagnetic coil and a magnetic core sub-assembly which are arranged in the shell sub-assembly; the valve body sub-assembly comprises an outer valve sleeve fixedly connected with the shell sub-assembly and a pilot valve arranged in the outer valve sleeve; the pilot valve comprises an inner valve sleeve and a control valve core, and one end of the control valve core, which is far away from the inner valve sleeve, can be in butt fit with the magnetic core sub-assembly; 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; 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; and the pilot oil outlet through-flow section hole is used for allowing oil to flow out of the pilot valve. The utility model has the advantages of response speed is faster, control stability is higher, control accuracy is higher, the linearity is higher.
Description
Technical Field
The utility model relates to an automobile parts field particularly, relates to an adjust damped solenoid valve of bumper shock absorber.
Background
The traditional shock absorber has fixed characteristics and provides a fixed damping characteristic curve in the process of stretching or compressing, the adjustable shock absorber provides a characteristic field, and the system timely selects different damping in the field according to working conditions (road conditions, braking, accelerating, turning, driver's will and the like) so as to restrain the vibration of a vehicle body, prevent tires from jumping and keep the stability of the vehicle body. The variable damping shock absorber is mainly realized by means of magneto-rheological, solenoid valve type, stepping motor type and the like, and the solenoid valve type has the advantages of reliable performance, low cost, quick response, compact structure and the like and is widely applied.
Although the application range of the electromagnetic valve type variable damping shock absorber is more and more extensive at home and abroad, the electromagnetic valve has the following defects in practical application:
(1) the adjustable range is small. The traditional electromagnetic valve is difficult to realize a wider adjusting range in a limited movement interval due to single-channel throttling, so that the change of the compression force and the refuting force of the shock absorber in a certain current range is small.
(2) The response is slow. The large regulation hysteresis leads to slow action of the electromagnetic valve, thereby reducing the response speed of the shock absorber assembly.
(3) The control precision is low. The electromagnetic valve for adjusting the damping of the shock absorber has a small adjusting range, so that a small current change in an adjusting range can cause a large opening change of the electromagnetic valve, and the control precision is reduced.
(4) The linearity of the damping force is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adjust damped solenoid valve of bumper shock absorber aims at solving the above-mentioned problem that adjusts the damped solenoid valve of bumper shock absorber and exists among the prior art.
The utility model discloses a realize like this:
a solenoid valve for adjusting the damping of a shock absorber comprises an electromagnetic driving sub-assembly and a valve body sub-assembly;
the electromagnetic drive sub-assembly comprises a shell sub-assembly, an electromagnetic coil and a magnetic core sub-assembly, wherein the electromagnetic coil and the magnetic core sub-assembly are arranged in the shell sub-assembly, and the electromagnetic coil is used for driving the magnetic core sub-assembly to slide in the shell sub-assembly;
the valve body sub-assembly comprises an outer valve sleeve fixedly connected with the shell sub-assembly and a pilot valve arranged in the outer valve sleeve;
the pilot valve comprises an inner valve sleeve and a control valve core, and one end of the control valve core, which is far away from the inner valve sleeve, can be in butt fit with the magnetic core sub-assembly; 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;
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 valve for adjusting the damping of the shock absorber.
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 end surface of the first column section is used for blocking the axial oil inlet opening and closing hole.
In an embodiment of the present invention, a first pressure spring is further disposed between the control valve core and the inner valve sleeve.
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 matched with the axial oil inlet opening and closing hole, one end of the second pressure spring of the main valve oil outlet hole 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 control valve element is far away from one surface of the inner valve sleeve is provided with a through groove, the control valve element has an initial state close to the magnetic core subassembly, in the initial state, the through groove forms a pilot oil outlet through-flow cross section close to the electromagnetic drive subassembly, the end surface of the control valve element is matched with the pilot oil outlet through-flow cross section.
The utility model has the advantages that: the utility model is applied to the adjustable damping shock absorber, when the shock absorber works, the current flowing through the electromagnetic driving sub-assembly is changed, and in the stage of smaller current, the throttling is realized mainly by the change of the oil outlet through-flow section of the pilot valve; at the stage of large current, throttling is realized mainly by an oil inlet through-flow section of the pilot valve, and a wider damping characteristic field is provided for the shock absorber. The electromagnetic valve for adjusting the damping of the shock absorber has the advantages of higher response speed, higher control stability, higher control precision, higher linearity and the like.
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 a solenoid 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 element according to the embodiment of the present invention.
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 groove.
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; 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 solenoid 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 connected with the valve body sub-assembly 2 in an interference mode, 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 spool 10 is in an initial state, at which the force value of the shock absorber is at a middle value.
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 provided with an oil inlet through hole 17 axially matching with the axial oil inlet opening and closing hole 19, 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 core 13 can gradually open the main valve oil outlet hole 18 when moving to the position close to the pilot valve 7.
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, and the end surface of the first column section 21 is used for blocking the axial oil inlet opening and closing hole 19. In the present embodiment, the first column section 21 and the second column section 22 are integrally formed, and in other embodiments, the control valve core 10 may be manufactured by welding or the like.
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.
In this embodiment, the rod portion of the magnetic core sub-assembly 5 is hollow, and a flow passage is formed 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), and the hydraulic force generated by introducing the oil into the rear end of the magnetic core sub-assembly 5 can assist in moving the control valve member 10. In the initial state, the through grooves 24 also serve to introduce oil into the rear end of the core sub-assembly 5.
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 the cavity in the pilot valve 7 with the outside of the electromagnetic valve, so that the hydraulic pressure in the pilot valve 7 can be drained outwards when the hydraulic pressure is too high.
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, 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, and the damping force of the shock absorber is in a middle value.
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 pressure of the cavity formed between the inner valve sleeve 9 and the control valve core 10 rises, the pressure of the cavity formed between the main valve core 13 and the outer valve sleeve 12 also rises, the main valve core 13 will displace towards the direction far away from the inner valve sleeve 9, so that the main valve oil outlet 18 is gradually closed, the flow of the main valve oil outlet 18 is reduced, the distance between the end surface of the control valve core 10 and the inner valve sleeve 9 is smaller and smaller along with the axial extension of the magnetic core sub-assembly 5, the oil inlet throttling of the pilot valve 7 is formed, and the through-flow cross section of the main valve oil outlet 18 is also reduced. On the contrary, when the current is reduced, the electromagnetic force applied to the magnetic core subassembly 5 is gradually reduced, and when the electromagnetic force is smaller than the elastic force of the first compression spring 11 and the liquid force applied to the control valve core 10, the magnetic core subassembly 5 is axially away from the inner valve sleeve 9. The flow cross section formed by the circumferential surface of the second column section 22 of the control spool 10 and the circumferential oil outlet opening/closing hole 20 of the inner valve sleeve 9 increases, the pressure of the cavity formed between the inner valve sleeve 9 and the control spool 10 decreases, the pressure of the cavity formed between the main spool 13 and the outer valve sleeve 12 also decreases, the main spool 13 moves in the direction of opening the main valve outlet hole 18, and the flow of the main valve outlet hole 18 increases.
The utility model is applied to the adjustable damping shock absorber, when the shock absorber works, the current flowing through the electromagnetic driving sub-assembly 1 is changed, and in the stage of smaller current, the throttling is realized mainly by changing the oil outlet through-flow section of the pilot valve 7; at the stage of large current, throttling is realized mainly by an oil inlet through-flow section of the pilot valve 7, and a wider damping characteristic field is provided for the shock absorber. The electromagnetic valve for adjusting the damping of the shock absorber has the advantages of higher response speed, higher control stability, higher control precision, higher linearity and the like.
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 (6)
1. The electromagnetic valve for adjusting the damping of the shock absorber is characterized by comprising an electromagnetic driving sub-assembly and a valve body sub-assembly;
the electromagnetic drive sub-assembly comprises a shell sub-assembly, an electromagnetic coil and a magnetic core sub-assembly, wherein the electromagnetic coil and the magnetic core sub-assembly are arranged in the shell sub-assembly, and the electromagnetic coil is used for driving the magnetic core sub-assembly to slide in the shell sub-assembly;
the valve body sub-assembly comprises an outer valve sleeve fixedly connected with the shell sub-assembly and a pilot valve arranged in the outer valve sleeve;
the pilot valve comprises an inner valve sleeve and a control valve core, and one end of the control valve core, which is far away from the inner valve sleeve, can be in butt fit with the magnetic core sub-assembly; 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;
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 valve for adjusting the damping of the shock absorber.
2. The damper damping adjustment solenoid valve as claimed in claim 1, wherein said control spool includes a first post section and a second post section, said second post section abuttable to said core subassembly, said first post section fixedly attached to an end of said second post section remote from said core subassembly;
the circumferential surface of the second column section is used for blocking the circumferential oil outlet opening and closing hole, and the end surface of the first column section is used for blocking the axial oil inlet opening and closing hole.
3. The solenoid 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.
4. The solenoid valve for adjusting damping of a shock absorber according to claim 1, wherein said valve body subassembly further comprises a primary 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 matched with the axial oil inlet opening and closing hole, one end of the second pressure spring of the main valve oil outlet hole acts on the main valve core, and the other end of the second pressure spring acts on the inner valve sleeve.
5. The solenoid valve for adjusting damping of a shock absorber according to claim 4, wherein a main valve outlet is provided on the outer sleeve, and a side of the main valve spool blocks the main valve outlet.
6. A solenoid valve for modulating the damping of a shock absorber according to claim 1 wherein the face of the control valve core remote from the inner valve sleeve is provided with a through slot, the control valve core having an initial state close to the core subassembly in which the through slot forms a pilot oil flow cross section cooperating with the end face of the solenoid driven subassembly close to the control valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265227.3U CN210461512U (en) | 2019-08-06 | 2019-08-06 | Electromagnetic valve for adjusting damping of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265227.3U CN210461512U (en) | 2019-08-06 | 2019-08-06 | Electromagnetic valve for adjusting damping of shock absorber |
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| Publication Number | Publication Date |
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| CN210461512U true CN210461512U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921265227.3U Active CN210461512U (en) | 2019-08-06 | 2019-08-06 | Electromagnetic valve for adjusting damping of shock absorber |
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| CN (1) | CN210461512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360261A (en) * | 2019-08-06 | 2019-10-22 | 绵阳富临精工机械股份有限公司 | A kind of solenoid valve adjusting damper damping |
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2019
- 2019-08-06 CN CN201921265227.3U patent/CN210461512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360261A (en) * | 2019-08-06 | 2019-10-22 | 绵阳富临精工机械股份有限公司 | A kind of solenoid valve adjusting damper damping |
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