CN103267134B - Plug-in mounting type electromagnetic valve and plug-in mounting type electromagnetic valve set using plug-in mounting type electromagnetic valve - Google Patents
Plug-in mounting type electromagnetic valve and plug-in mounting type electromagnetic valve set using plug-in mounting type electromagnetic valve Download PDFInfo
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- CN103267134B CN103267134B CN201310195906.9A CN201310195906A CN103267134B CN 103267134 B CN103267134 B CN 103267134B CN 201310195906 A CN201310195906 A CN 201310195906A CN 103267134 B CN103267134 B CN 103267134B
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- spool
- push rod
- iron core
- valve
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Abstract
The invention relates to a plug-in mounting type electromagnetic valve and a plug-in mounting type electromagnetic valve set using the plug-in mounting type electromagnetic valve. The plug-in mounting type electromagnetic valve comprises an electromagnet assembly and a valve element assembly. The electromagnet assembly comprises a coil rack, a movable iron core and a push rod, wherein a push rod guide hole which is used for enabling the push rod to penetrate in a guided mode is formed in the coil rack. The valve element assembly comprises a valve sleeve and a valve element, wherein the push rod is matched with the valve element in a pushing mode, the lower end hole edge of the push rod guide hole is matched with the valve element in a blocking mode to limit the upward movement limitation of the valve element, an oil passing gap is formed between the peripheral surface of the push rod and the hole wall of the push rod guide hole, the lower end hole edge of the push rod guide hole is matched with the upper end face of the valve element in the blocking mode to limit the upward movement limitation of the valve element, an oil passing groove is formed in the upper end face of the valve element, the peripheral surface of the valve element and the push rod guide hole are communicated through the oil passing groove, an annular oil passing cavity is arranged between the valve element and the hole wall of a valve sleeve mounting hole, and the oil passing groove and a valve element oil duct are communicated through the annular oil passing cavity. The plug-in mounting type electromagnetic valve and the plug-in mounting type electromagnetic valve set using the plug-in mounting type electromagnetic valve solve the problem that in the prior art, the structural strength of the push rod is reduced due to the fact that an oil passing channel needs to be arranged inside the push rod.
Description
Technical field
The present invention relates to solenoid valve market, particularly relate to a kind of plugged electric magnet valve and use the plugged electric magnet valve group of this solenoid valve.
Background technique
In the various hydraulic systems of machinery, two-position three way high pressure, No leakage oil hydraulic circuit are widely applied, wherein two-position three way plugged electric magnet valve is the crucial hydraulic element of this type systematic, and the quality of plug-in type magnetic valve performance directly affects the performance of main frame.Existing plug-in type electromagnetic valve structure is disclosed in Chinese patent CN202017791U " threaded plug-in two-position three-way cone valve type electromagnetic valve ", this solenoid valve comprises electromagnet assembly and mangetic core assembly, electromagnet assembly comprises the coil carrier being provided with electromagnetic coil, mangetic core assembly comprises the valve pocket be connected in the valve pocket mounting hole of coil carrier lower end, the dynamic iron core that can move down under the active force of electromagnetic coil drives is provided with in coil carrier, spool moving up and down is provided with in the endoporus of valve pocket, spool oil duct is provided with in spool, on coil carrier in the lower end of dynamic iron core also along the vertical direction guiding movement be equipped with push rod, upper end and the dynamic iron core lower end of push rod are in transmission connection, lower end and the spool of push rod are in transmission connection, dynamic iron core can promote spool by push rod and move down, the Returnning spring forcing and spool moves is top-loaded with between valve pocket and spool.Valve pocket is arranged at intervals with first, second, and third hydraulic fluid port along the vertical direction, and spool has shutoff the 3rd hydraulic fluid port, is communicated with the upper working position of first, second hydraulic fluid port and shutoff first hydraulic fluid port, the lower working position being communicated with second, third hydraulic fluid port moving up and down in process.When electromagnetic coil no electric circuit, by action of reset spring power, spool is in working position, and now the 3rd oilhole is by spool shutoff, and first, second hydraulic fluid port is communicated with; When electromagnetic coil is energized, the electromagnetic force that electromagnetic coil produces promotes dynamic iron core and moves down, and dynamic iron core is displaced downwardly to lower working position by push rod band movable valve plug, and now the first hydraulic fluid port is by shutoff, and second, third hydraulic fluid port is communicated with.The main Problems existing of existing this solenoid valve is: owing to wanting frequent power on/off magnet valve, cause the use of Returnning spring comparatively frequent, and Returnning spring is after frequent use, the reposition force that Returnning spring can be caused to provide spool is inadequate, make spool can not move to working position smoothly, affect the use of solenoid valve; In addition, dynamic iron core moves down Shi Douhui and coil carrier at every turn and produces and strongly clash into, and damages comparatively large, reduce the working life of dynamic iron core to dynamic iron core; Offer in push rod and be communicated with the endoporus of valve pocket and the oily passage of mistake of dynamic iron core space, the setting of crossing oily passage adds the complex structure degree of push rod, also reduces the structural strength of push rod simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of plugged electric magnet valve, reducing the problem of pusher structure intensity to solve in prior art because needing to arrange oily passage in push rod inside; The present invention also aims to provide a kind of plugged electric magnet valve group using this plugged electric magnet valve.
In order to solve the problem, in the present invention, the technological scheme of plugged electric magnet valve is:
Plugged electric magnet valve, comprise the mangetic core assembly of electromagnet assembly and lower end setting thereof, electromagnet assembly comprise coil carrier and along the vertical direction guiding movement be assemblied in the dynamic iron core in coil carrier, the lower end of dynamic iron core is connected with push rod, coil carrier is provided with and leads the push rod pilot hole installed for described push rod, mangetic core assembly comprises the valve pocket be connected in the valve pocket mounting hole of coil carrier lower end, in valve pocket, guiding is provided with the spool of spool oil duct in being equipped with, the lower end of described push rod coordinates with the upper end pushing tow of spool, the lower stomidium of described push rod pilot hole is continued to use and to be limited spool in coordinating with the upper-end surface block of described spool and to move up the limit, the oil-gap be excessively communicated with the space of dynamic iron core is provided with between the outer circumferential face of push rod and the hole wall of push rod pilot hole, the upper-end surface of described spool is provided with the oil groove being excessively communicated with described spool outer circumferential face and push rod pilot hole, be provided with the annular being communicated with described oil groove and spool oil duct excessively between described spool and the hole wall of valve pocket mounting hole and cross oil pocket.
The described shape crossing oil groove is spirality.
Described valve pocket is arranged at intervals with first, second, and third hydraulic fluid port along the vertical direction, be top-loaded with between valve pocket with spool to force and spool move and makes spool shutoff the 3rd hydraulic fluid port, be communicated with the Returnning spring of first, second hydraulic fluid port, pad between described Returnning spring and spool and/or between Returnning spring valve pocket and adjustment pad is housed.
Described spool turns up and has spring first installation to turn edge, described valve pocket installs in described spring first the below varus turned edge have spring second that installing with spring first turns edge is oppositely arranged to install to turn edge, between described Returnning spring is arranged at spring first and second installs and turn edge.
The upper end of described coil carrier is provided with iron core lid, and iron core covers the stud that the axis that is threaded extends along the vertical direction, and the upper end of stud protrudes from iron core lid and is installed with sealing nut.
Described dynamic iron core offers the axis running through the upper and lower end face of dynamic iron core vertically and cross oily passage.
In the present invention, the technological scheme of plugged electric magnet valve group is:
Plugged electric magnet valve group, comprise and be fitted with electromagnetism valve housing, solenoid valve comprises the mangetic core assembly of electromagnet assembly and lower end setting thereof, electromagnet assembly comprise coil carrier and along the vertical direction guiding movement be assemblied in the dynamic iron core in coil carrier, the lower end of dynamic iron core is connected with push rod, coil carrier is provided with and leads the push rod pilot hole installed for described push rod, mangetic core assembly comprises the valve pocket be connected in the valve pocket mounting hole of coil carrier lower end, in valve pocket, guiding is provided with the spool of spool oil duct in being equipped with, the lower end of described push rod coordinates with the upper end pushing tow of spool, the lower stomidium of described push rod pilot hole is continued to use and to be limited spool in coordinating with the upper-end surface block of described spool and to move up the limit, the oil-gap be excessively communicated with the space of dynamic iron core is provided with between the outer circumferential face of push rod and the hole wall of push rod pilot hole, the upper-end surface of described spool is provided with the oil groove being excessively communicated with described spool outer circumferential face and push rod pilot hole, be provided with the annular being communicated with described oil groove and spool oil duct excessively between described spool and the hole wall of valve pocket mounting hole and cross oil pocket.
The described shape crossing oil groove is spirality.
The upper end of described coil carrier is provided with iron core lid, and iron core covers the stud that the axis that is threaded extends along the vertical direction, and the upper end of stud protrudes from iron core lid and is installed with sealing nut.
Described solenoid valve has at least two, the valve pocket of described mangetic core assembly is arranged at intervals with first, second, and third hydraulic fluid port along the vertical direction, be top-loaded with between valve pocket with spool to force and spool move and makes spool shutoff the 3rd hydraulic fluid port, be communicated with the Returnning spring of first, second hydraulic fluid port, pad between described Returnning spring and spool and/or between Returnning spring valve pocket and adjustment pad is housed, first hydraulic fluid port of each solenoid valve is communicated with by the first asphalt channel be arranged on housing, and the 3rd hydraulic fluid port of each solenoid valve is communicated with by the second asphalt channel be arranged on housing.
Beneficial effect of the present invention is: during use hydraulic oil through spool oil duct, annular cross oil pocket, be arranged at spool upper-end surface cross oil groove and between push rod and push rod pilot hole cross oil-gap flows to move iron core place space in, thus dynamic iron core is lubricated, iron core is moved more steady, do not need to arrange oily passage in push rod, push rod is easy to make, also ensure that the structural strength of push rod, cross oil groove is arranged on the upper-end surface of spool simultaneously, cross oil groove also very little on the impact of valve core structure intensity, ensure that spool also has enough structural strengths.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of plugged electric magnet valve group in the present invention;
Fig. 2 is the structural representation of plugged electric magnet valve in Fig. 1.
Embodiment
The embodiment of plugged electric magnet valve group is as shown in Figure 1 and 2: comprise the housing being fitted with two plugged electric magnet valves 27, each plugged electric magnet valve includes electromagnet assembly and mangetic core assembly, electromagnet assembly comprises the coil carrier 8 being provided with electromagnetic coil 10, coil carrier is provided with the dynamic iron core 13 that can move down under the active force of electromagnetic coil, the underpart of dynamic iron core is a cone boss structure, underpart electromagnet assembly being provided with shape and described dynamic iron core is adaptive, and the cone tank of the insertion that coincide for the underpart moving iron core, the underpart of cone tank and dynamic iron core forms conical surface electromagnet air gap, incipient suction force is large, in whole stroke, pull characteristics are mild, the shock of iron core to coil carrier is moved when also can reduce end of travel.The two ends up and down of electromagnetic coil realize sealing with outside respectively by sealing gasket 15 and seal ring 9, sealing gasket is compressed by compressing tablet 16, back-up ring 17 is arranged in the mounting groove in plug 18, and the outer race of electromagnetic coil is provided with electromagnet housing 12, and electromagnet housing and coil carrier interference fit are also fixing.The upper end of coil carrier is provided with magnetic conduction pad 14, and it coordinates with electromagnet housing 12, for the formation of magnetic loop.The upper end of coil carrier is provided with iron core lid, and iron core covers the stud 20 that the axis that is threaded extends along the vertical direction, and the upper end of stud protrudes from iron core lid and is installed with sealing nut 19, and stud can adjust position up and down, thus the stroke of the dynamic iron core of adjustment.The lower end interference of dynamic iron core is installed with push rod 11, push rod leads in the push rod pilot hole that is installed on and is arranged on coil carrier along the vertical direction, the upper end of push rod pilot hole is communicated with the space of dynamic iron core, is provided with oil-gap between the outer circumferential face of push rod and the hole wall of push rod pilot hole.Mangetic core assembly comprises the valve pocket 2 be connected in the valve pocket mounting hole of coil carrier lower end, in the endoporus of valve pocket, guiding is coated with spool 4 along the vertical direction, spool oil duct is provided with in spool, the upper end of spool is used for coordinating with the lower end pushing tow of push rod, valve pocket is arranged at intervals with along the vertical direction the first hydraulic fluid port 32, second hydraulic fluid port 34 and the 3rd hydraulic fluid port 37, the inner hole wall of valve pocket is arranged at intervals with along the vertical direction annular boss 33 on valve pocket, annular boss 38 under annular boss 35 and valve pocket in valve pocket, wherein on valve pocket, annular boss is positioned at first, between second hydraulic fluid port, in valve pocket, annular boss is positioned at second, between 3rd hydraulic fluid port, under valve pocket, annular boss is positioned at the below of the 3rd hydraulic fluid port, the outer circumferential face of spool is arranged at intervals with along the vertical direction annular boss 31 on the spool for coordinating with annular boss slipper seal on valve pocket, for annular boss 36 in the spool that coordinates with annular boss slipper seal in valve pocket with for annular boss under the spool that coordinates with annular boss slipper seal under valve pocket, on spool, in, the outer circumferential face of lower annular boss is provided with multi-turn balancing slit, first hydraulic fluid port of each plugged electric magnet valve is communicated with by the first asphalt channel 41 be arranged on housing, 3rd hydraulic fluid port of each plugged electric magnet valve is communicated with by the second asphalt channel 42 be arranged on housing, housing is provided with respectively with first, second and hydraulic fluid port corresponding to the 3rd hydraulic fluid port, housing is provided with two filler openings and return opening, the hydraulic fluid port that housing does not use can coordinate the shutoff of close screw plug seal ring 26 by screw plug 25.Spool turns up and has spring first installation to turn edge 40, valve pocket installs in described spring first the below varus turned edge have spring second that installing with spring first turns edge is oppositely arranged to install to turn edge 39, be provided with Returnning spring 7 between first and second installation of spring turns edge, Returnning spring and spring second pad to be equipped with between installing and turning edge and regulate pad 23.Second adjustment pad 43 is housed between valve pocket and coil carrier.By two two-position three way plugged electric magnet valves are composed in parallel solenoid valve group, four four-way functions can be realized.Crossing oil groove is that spirality can play kinetic damping effect, reduces the impact of dynamic iron core motion to coil carrier, reduces the impact to coil carrier end face when spool commutates simultaneously, makes product commutate steadily, reduce compression shock.
When electromagnetic coil is energized, dynamic iron core can be moved down by push rod band movable valve plug; Spool has shutoff the 3rd hydraulic fluid port, is communicated with the upper working position of first, second hydraulic fluid port and shutoff first hydraulic fluid port, the lower working position being communicated with second, third hydraulic fluid port moving up and down in process.When electromagnetic coil no electric circuit, by action of reset spring power and hydraulic power, spool is in working position, and now the 3rd oilhole is by spool shutoff, and first, second hydraulic fluid port is communicated with; When electromagnetic coil is energized, the electromagnetic force that electromagnetic coil produces promotes dynamic iron core and moves down, and dynamic iron core is displaced downwardly to lower working position by push rod band movable valve plug, and now the first hydraulic fluid port is by shutoff, and second, hydraulic fluid port is communicated with.The lower stomidium of push rod pilot hole is continued to use and to be limited spool in coordinating with spool upper-end surface block and to move up the limit, the upper-end surface 30 of spool is provided with the oil groove being excessively communicated with described spool outer circumferential face and push rod pilot hole, crossing oil groove is spiral slot, spirality crosses oil groove can make the more steady of running of hydraulic power oil, be provided with connecting valve core oil road between the hole wall of spool and valve pocket mounting hole and cross oil pocket with the annular crossing oil groove, dynamic iron core offers to be run through on dynamic iron core vertically, the axis of lower end surface crosses oily passage, hydraulic oil crosses oil pocket through annular from spool oil duct, cross oil groove, crossing oil-gap flow in the space of dynamic iron core, lubrication and cooling can be carried out to dynamic iron core, the damping function of oil also reduces reversing impact and noise, push rod is made to be subject to frictional force little, long service life, crossing oil groove is opened on spool upper-end surface, processing is simple, also can not affect the structural strength of spool and push rod simultaneously.In figure, part 22 represents waterproof Quick connector plug; Part 21 represents cable; Part 1,3,5,6,9 all represents seal ring.
The balancing slit be arranged on spool can reduce hydraulic card clamping force during valve core movement, makes solenoid valve commutate steadily; High-quality carbon spring steel wires long service life selected by Returnning spring.In other embodiments of the invention: regulate the number of pad to select as required, for example, two, three or more; Between regulating pad to pad to be contained in Returnning spring and spring first to install to turn edge or between padding simultaneously and being contained in Returnning spring and spring first and second installs and turn edge; Spring second is installed to turn edge and also can not be established, and now Returnning spring can immediate roof be contained on the upper-end surface of valve pocket; The shape crossing oil groove being arranged at spool upper-end surface also can be radial radiation shape; The number being arranged at the balancing slit on each spool annular boss can also be one, two or other number, and certain balancing slit also can not be established; The lower end of dynamic iron core can also be the plane structure of a bearing of trend perpendicular to above-below direction, and the upper end of push rod also can not be fixedly connected with dynamic iron core, but coordinates with dynamic iron core lower end pushing tow; The number of plugged electric magnet valve can also be one, three, four or more.
The embodiment of plugged electric magnet valve is as shown in Figure 2: the concrete structure of plugged electric magnet valve is identical with the plugged electric magnet valve described in above-mentioned each plugged electric magnet valve group embodiment, is not described in detail in this.
Claims (10)
1. plugged electric magnet valve, comprise the mangetic core assembly of electromagnet assembly and lower end setting thereof, electromagnet assembly comprise coil carrier and along the vertical direction guiding movement be assemblied in the dynamic iron core in coil carrier, the lower end of dynamic iron core is connected with push rod, coil carrier is provided with and leads the push rod pilot hole installed for described push rod, mangetic core assembly comprises the valve pocket be connected in the valve pocket mounting hole of coil carrier lower end, in valve pocket, guiding is provided with the spool of spool oil duct in being equipped with, it is characterized in that: the lower end of described push rod coordinates with the upper end pushing tow of spool, the lower stomidium of described push rod pilot hole is continued to use and to be limited spool in coordinating with the upper-end surface block of described spool and to move up the limit, the oil-gap be excessively communicated with the space of dynamic iron core is provided with between the outer circumferential face of push rod and the hole wall of push rod pilot hole, the upper-end surface of described spool is provided with the oil groove being excessively communicated with described spool outer circumferential face and push rod pilot hole, be provided with the annular being communicated with described oil groove and spool oil duct excessively between described spool and the hole wall of valve pocket mounting hole and cross oil pocket, during use, hydraulic oil is through spool oil duct, annular crosses oil pocket, be arranged at spool upper-end surface cross oil groove and between push rod and push rod pilot hole cross oil-gap flows to move iron core place space in.
2. plugged electric magnet valve according to claim 1, is characterized in that: the described shape crossing oil groove is spirality.
3. plugged electric magnet valve according to claim 1, it is characterized in that: described valve pocket is arranged at intervals with first, second, and third hydraulic fluid port along the vertical direction, be top-loaded with between valve pocket with spool to force and spool move and makes spool shutoff the 3rd hydraulic fluid port, be communicated with the Returnning spring of first, second hydraulic fluid port, pad between described Returnning spring and spool and/or between Returnning spring valve pocket and adjustment pad is housed.
4. plugged electric magnet valve according to claim 3, it is characterized in that: described spool turns up and has spring first installation to turn edge, described valve pocket installs in described spring first the below varus turned edge have spring second that installing with spring first turns edge is oppositely arranged to install to turn edge, between described Returnning spring is arranged at spring first and second installs and turn edge.
5. plugged electric magnet valve according to claim 1, is characterized in that: the upper end of described coil carrier is provided with iron core lid, and iron core covers the stud that the axis that is threaded extends along the vertical direction, and the upper end of stud protrudes from iron core lid and is installed with sealing nut.
6. the plugged electric magnet valve according to claim 1 ~ 5 any one, is characterized in that: described dynamic iron core offers the axis running through the upper and lower end face of dynamic iron core vertically and cross oily passage.
7. plugged electric magnet valve group, comprise and be fitted with electromagnetism valve housing, solenoid valve comprises the mangetic core assembly of electromagnet assembly and lower end setting thereof, electromagnet assembly comprise coil carrier and along the vertical direction guiding movement be assemblied in the dynamic iron core in coil carrier, the lower end of dynamic iron core is connected with push rod, coil carrier is provided with and leads the push rod pilot hole installed for described push rod, mangetic core assembly comprises the valve pocket be connected in the valve pocket mounting hole of coil carrier lower end, in valve pocket, guiding is provided with the spool of spool oil duct in being equipped with, it is characterized in that: the lower end of described push rod coordinates with the upper end pushing tow of spool, the lower stomidium of described push rod pilot hole is continued to use and to be limited spool in coordinating with the upper-end surface block of described spool and to move up the limit, the oil-gap be excessively communicated with the space of dynamic iron core is provided with between the outer circumferential face of push rod and the hole wall of push rod pilot hole, the upper-end surface of described spool is provided with the oil groove being excessively communicated with described spool outer circumferential face and push rod pilot hole, be provided with the annular being communicated with described oil groove and spool oil duct excessively between described spool and the hole wall of valve pocket mounting hole and cross oil pocket, during use, hydraulic oil is through spool oil duct, annular crosses oil pocket, be arranged at spool upper-end surface cross oil groove and between push rod and push rod pilot hole cross oil-gap flows to move iron core place space in.
8. plugged electric magnet valve group according to claim 7, is characterized in that: the described shape crossing oil groove is spirality.
9. plugged electric magnet valve group according to claim 7, it is characterized in that: the upper end of described coil carrier is provided with iron core lid, iron core covers the stud that the axis that is threaded extends along the vertical direction, and the upper end of stud protrudes from iron core lid and is installed with sealing nut.
10. the plugged electric magnet valve group according to claim 7 ~ 9 any one, it is characterized in that: described solenoid valve has at least two, the valve pocket of described mangetic core assembly is arranged at intervals with first along the vertical direction, second and the 3rd hydraulic fluid port, be top-loaded with between valve pocket and spool to force and spool move and makes spool shutoff the 3rd hydraulic fluid port, be communicated with first, the Returnning spring of the second hydraulic fluid port, pad between described Returnning spring and spool and/or between Returnning spring valve pocket and adjustment pad is housed, first hydraulic fluid port of each solenoid valve is communicated with by the first asphalt channel be arranged on housing, 3rd hydraulic fluid port of each solenoid valve is communicated with by the second asphalt channel be arranged on housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195906.9A CN103267134B (en) | 2013-05-24 | 2013-05-24 | Plug-in mounting type electromagnetic valve and plug-in mounting type electromagnetic valve set using plug-in mounting type electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195906.9A CN103267134B (en) | 2013-05-24 | 2013-05-24 | Plug-in mounting type electromagnetic valve and plug-in mounting type electromagnetic valve set using plug-in mounting type electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103267134A CN103267134A (en) | 2013-08-28 |
| CN103267134B true CN103267134B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310195906.9A Expired - Fee Related CN103267134B (en) | 2013-05-24 | 2013-05-24 | Plug-in mounting type electromagnetic valve and plug-in mounting type electromagnetic valve set using plug-in mounting type electromagnetic valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN103267134B (en) |
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2013
- 2013-05-24 CN CN201310195906.9A patent/CN103267134B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4250922A (en) * | 1978-05-24 | 1981-02-17 | Robert Bosch Gmbh | Electromagnetically operated control valve |
| US4838518A (en) * | 1987-05-28 | 1989-06-13 | Aisin An Co., Ltd. | Pressure control valve |
| US4905961A (en) * | 1988-04-18 | 1990-03-06 | Diesel Kiki Co., Ltd. | Electromagnetic actuator |
| US4971116A (en) * | 1988-11-09 | 1990-11-20 | Aisin Aw Kabushiki Kaisha | Pressure control valve |
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| US5871201A (en) * | 1995-02-09 | 1999-02-16 | Mannesmann Rexroth Ag | Electromagnet with sleeve-shaped housing |
| CN1285479A (en) * | 1999-07-02 | 2001-02-28 | 马克阀门公司 | Self-locking type electromagnetic valve and ccotrol circuit thereof |
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| CN203272813U (en) * | 2013-05-24 | 2013-11-06 | 平原机器厂（新乡） | Plug-in type electromagnetic valve and plug-in type electromagnetic valve set with same |
Also Published As
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| CN103267134A (en) | 2013-08-28 |
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Address after: 453000 Jiefang Road, Henan, Xinxiang, No. 1 Patentee after: Xinxiang Pingyuan Aviation Equipment Co., Ltd. Address before: 453000 Jiefang Road, Henan, Xinxiang, No. 1 Patentee before: Pingyuan Machine Factory (Xinxiang) |
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Address after: No. 168 Jianzhong Road, Xinxiang City, Henan Province, 453000 Patentee after: Xinxiang Aviation Industry (Group) Co., Ltd. Address before: 453000 No. 1 Jiefang Avenue Middle Road, Xinxiang City, Henan Province Patentee before: Xinxiang Pingyuan Aviation Equipment Co., Ltd. |
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