CN220168113U - Magnetic attraction structure of air pump and air tap - Google Patents
Magnetic attraction structure of air pump and air tap Download PDFInfo
- Publication number
- CN220168113U CN220168113U CN202321466707.2U CN202321466707U CN220168113U CN 220168113 U CN220168113 U CN 220168113U CN 202321466707 U CN202321466707 U CN 202321466707U CN 220168113 U CN220168113 U CN 220168113U
- Authority
- CN
- China
- Prior art keywords
- air
- magnetic body
- magnetic
- air pump
- valve assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 230000005389 magnetism Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Abstract
The utility model discloses a magnetic attraction structure of an air pump and an air tap, which comprises the air pump and the air tap, wherein the air tap comprises an air tap seat and a one-way valve component, the one-way valve component is arranged on the air tap seat in a reversing and detachable way and is magnetically connected with the air tap seat, an air flow connector is arranged on the air pump and is magnetically connected with the one-way valve component, and the magnetic force between the one-way valve component and the air tap seat is larger than the magnetic force between the air flow connector and the one-way valve component. The utility model aims to provide a magnetic attraction structure of an air pump and an air tap, which are not easy to leak air.
Description
Technical Field
The utility model relates to the field of inflation, in particular to a magnetic attraction structure of an air pump and an air nozzle.
Background
In the prior art, the air cock is installed on inflating, is provided with the air current joint on the air pump, and the air current joint is the joint that the air passed through, and the air pump can be inflated or gassing through the air current joint, and the air cock includes check valve assembly and air cock seat, and wherein the dismouting of check valve assembly is on the air cock seat in a reversible way, corresponds state of inflation and gassing state promptly respectively, all is close fit's mode when inflating or gassing between air cock seat and the air pump and between air cock seat and the check valve assembly, and such mode can have some shortcoming, like: the connection is not firm or the connection is too tight, so that the disassembly and the assembly are very troublesome, and in order to solve the problem, a magnetic attraction structure is invented in the prior market, and the air nozzle seat and the air pump and the air nozzle seat and the one-way valve assembly are attracted through magnetism.
However, such a structure has a disadvantage: when the air pump is separated from the one-way valve assembly, the one-way valve assembly is easily driven to be separated from the air tap seat, so that air leakage is caused.
Disclosure of Invention
The utility model aims to provide a magnetic attraction structure of an air pump and an air tap, which are not easy to leak air.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a structure is inhaled to magnetism of air pump and air cock, includes air pump and air cock, the air cock includes air cock seat and check valve subassembly, the check valve subassembly can commutate the dismouting and set up on the air cock seat to with its magnetic connection, be provided with the air current on the air pump and connect, the air current connect with check valve subassembly magnetic connection, the check valve subassembly with magnetic force between the air cock seat is greater than the air current connect with magnetic force between the check valve subassembly.
Still preferably, the air tap seat is provided with a first magnetic body, the check valve assembly is provided with a second magnetic body, the air flow joint is provided with a third magnetic body, magnetic attraction is suitable for being generated between the first magnetic body and the second magnetic body, magnetic attraction is suitable for being generated between the second magnetic body and the third magnetic body, and magnetic attraction generated between the second magnetic body and the first magnetic body is larger than magnetic attraction generated between the third magnetic body and the second magnetic body.
Further preferably, the magnitude of the magnetic attraction force is determined by the strength of the magnetic field of each magnetic body or by the distance between the magnetic bodies.
Further preferably, the first magnetic body is an iron sheet, the second magnetic body is a permanent magnet, and the third magnetic body is an iron sheet or a permanent magnet.
Further preferably, the first magnetic body is a permanent magnet, the second magnetic body is an iron sheet, and the third magnetic body is a permanent magnet.
Further preferably, the third magnetic body is an iron sheet, and the first magnetic body and the third magnetic body are identical in size, shape and material, and when the air pump and the air tap are magnetically attracted through the one-way valve assembly, a distance between the first magnetic body and the second magnetic body is smaller than a distance between the second magnetic body and the third magnetic body.
Further preferably, the magnetic fields generated by the first magnetic body and the third magnetic body are equal in magnitude, and when the air pump and the air tap are magnetically attracted through the check valve assembly, a distance between the first magnetic body and the second magnetic body is smaller than a distance between the second magnetic body and the third magnetic body.
Further preferably, the magnitude of the magnetic field generated by the first magnetic body is larger than the magnitude of the magnetic field generated by the third magnetic body.
Further preferably, the check valve assembly is provided with a lug protruding outwards along the radial direction, the top end of the air tap seat is provided with a mounting groove which is suitable for mounting the check valve assembly in a penetrating way along the radial direction, and the lug is suitable for being mounted in the mounting groove.
Further preferably, a limiting groove is formed in the axial end face of the mounting seat, a limiting protrusion matched with the limiting groove is arranged on the air flow connector in an axially protruding mode, and the air flow connector is suitable for achieving primary positioning with the one-way valve assembly through the limiting protrusion.
Compared with the prior art, the utility model has the beneficial effects that:
because the magnetic force between the one-way valve assembly and the air tap seat is larger than the magnetic force between the air flow connector and the one-way valve assembly, when the air flow connector is driven to be separated from the one-way valve assembly, the driving force is insufficient to separate the one-way valve assembly from the air tap seat due to the difference of the magnetic force, so that the one-way valve assembly is prevented from being separated from the air tap seat when the air flow connector (namely, the air pump is contacted with the air inflation body) is dismounted, and air leakage is avoided.
Drawings
FIG. 1 is a schematic view of one embodiment of a magnetic attachment of an air pump and air cap of the present utility model, showing the air pump and air cap;
FIG. 2a is a schematic view of a one-way valve assembly of one embodiment of a magnetic coupling of an air pump and air cap of the present utility model, shown in an inflated state;
FIG. 2b is a schematic view of a one-way valve assembly of one embodiment of a magnetic attraction joint of an air pump and air cap of the present utility model, shown in a deflated state;
FIG. 3 is an exploded view of one embodiment of a magnetic attachment of the air pump and air nozzle of the present utility model;
FIG. 4 is a cross-sectional view of one embodiment of a magnetic attachment of the air pump and air cap of the present utility model;
FIG. 5a is a cross-sectional view of one embodiment of a magnetic coupling of an air pump and air cap of the present utility model, shown in an inflated state;
FIG. 5b is a cross-sectional view of one embodiment of a magnetic attachment of the air pump and air cap of the present utility model, shown in a deflated state;
FIG. 6 is a schematic view of one embodiment of a magnetic coupling of an air pump and air cap of the present utility model, showing a one-way valve assembly;
FIG. 7 is a schematic view of an embodiment of a magnetic attraction joint of an air pump and an air nozzle of the present utility model, showing the air nozzle seat.
In the figure: 1. an air tap; 11. an air tap seat; 111. a first magnetic body; 112. a mounting groove; 12. a one-way valve assembly; 121. a second magnetic body; 122. a valve core; 123. a mounting base; 1231. a limit groove; 1232. a lug; 13. a dust cover; 2. an air pump; 21. an air flow joint; 211. a third magnetic body; 212. and a limit protrusion.
Detailed Description
The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The inventor of the present utility model has developed a magnetic attraction structure of an air pump 2 and an air tap 1, an embodiment of which is shown in fig. 1 to 7, and the magnetic attraction structure comprises the air pump 2 and the air tap 1, the air tap 1 comprises an air tap seat 11 and a one-way valve assembly 12, the one-way valve assembly 12 is detachably arranged on the air tap seat 11 and is magnetically connected with the air tap seat 11, an air flow connector 21 is arranged on the air pump 2, the air flow connector 21 is magnetically connected with the one-way valve assembly 12, and the magnetic force between the one-way valve assembly 12 and the air tap seat 11 is greater than the magnetic force between the air flow connector 21 and the one-way valve assembly 12. In this particular embodiment the air flow connection 21 comprises an inflation air flow connection and a deflation air flow connection, which are provided on the upper and lower sides of the air pump 2, respectively, as shown in fig. 4. Reversible disassembly and assembly of the check valve assembly 12 is shown in fig. 2a and 2b, wherein fig. 2a illustrates an inflated condition in which gas may pass through the check valve assembly 12 from top to bottom in the direction of the arrows, thereby effecting inflation; wherein fig. 2b shows a deflated condition wherein gas may pass through the one-way valve assembly 12 from bottom to top in the direction of the arrow, thereby achieving the deflating effect. The air tap 1 further generally comprises a dust cap 13, one embodiment of which is shown in fig. 3, wherein the dust cap 13 is detachably mounted on the air tap seat 11 through threads.
It should be noted that, because the check valve assembly 12 is magnetically connected with the air tap seat 11, and the air tap joint 21 is magnetically connected with the check valve assembly 12, the magnetic connection between the air tap seat 11 and the air tap joint 21 can be realized, so that the air tap seat 11 and the air tap joint 21 can be conveniently disassembled and assembled, the check valve assembly 12 can be conveniently disassembled and assembled in a reversing way, and the air leakage phenomenon is avoided.
Because the magnetic force between the check valve assembly 12 and the air tap seat 11 is larger than the magnetic force between the air flow joint 21 and the check valve assembly 12, when the air flow joint 21 is driven to be separated from the check valve assembly 12, the driving force is insufficient to separate the check valve assembly 12 from the air tap seat 11 due to the difference of the magnetic force, so that the check valve assembly 12 is not separated from the air tap seat 11 when the air flow joint 21 is dismantled (namely, when the air pump 2 is contacted with the air inflation body), and air leakage is avoided.
Further preferably, as shown in fig. 4, the air tap seat 11 is provided with a first magnetic body 111, the check valve assembly 12 is provided with a second magnetic body 121, the air flow joint 21 is provided with a third magnetic body 211, magnetic attraction is suitable for generating between the first magnetic body 111 and the second magnetic body 121, magnetic attraction is suitable for generating between the second magnetic body 121 and the third magnetic body 211, and magnetic attraction force generated between the second magnetic body 121 and the first magnetic body 111 is larger than magnetic attraction force generated between the third magnetic body 211 and the second magnetic body 121.
It should be noted that the magnetic body refers to an object with magnetic force, such as a permanent magnet; or an object capable of being magnetically attracted, such as a magnetic material of iron, nickel, cobalt, etc. As shown in fig. 5a, when in the inflated state, the check valve assembly 12 magnetically attracts the air tap seat 11 and the air tap 21, respectively; in the deflated condition, as shown in fig. 5b, the one-way valve assembly 12 magnetically engages the air cap seat 11 and the air flow connector 21, respectively.
Further preferably, the magnitude of the magnetic attraction force is determined by the strength of the magnetic field of each magnetic body or by the distance between the magnetic bodies.
Embodiment one: as shown in fig. 5a and 5b, the first magnetic body 111 is an iron sheet, the second magnetic body 121 is a permanent magnet, and the third magnetic body 211 is a permanent magnet, and when the magnetic force generated between the second magnetic body 121 and the first magnetic body 111 is controlled to be larger than the magnetic force generated between the third magnetic body 211 and the second magnetic body 121, the check valve assembly 12 and the air tap seat 11 can be prevented from being separated when the air flow joint 21 and the check valve assembly 12 are removed.
Embodiment two: the first magnetic body 111 is an iron sheet, the second magnetic body 121 is a permanent magnet, the third magnetic body 211 is an iron sheet, and the first magnetic body 111 and the third magnetic body 211 are identical in size, shape and material, and when the air pump 2 and the air tap 1 are magnetically attracted through the one-way valve assembly 12, the distance between the first magnetic body 111 and the second magnetic body 121 is smaller than the distance between the second magnetic body 121 and the third magnetic body 211. The first magnetic body 111 and the third magnetic body 211 are controlled to be identical in size, shape and material, and are used for controlling the magnetic force between the second magnetic body 121 and the first magnetic body 111 and the third magnetic body 211, that is, controlling the magnetic force between the first magnetic body 111 and the second magnetic body 121 to be equal to the magnetic attraction between the second magnetic body 121 and the third magnetic body 211 when the distance between the first magnetic body 111 and the second magnetic body 121 is equal to the distance between the second magnetic body 121 and the third magnetic body 211. Thus, the technical solution of the present embodiment is realized, and the difference in magnetic force is realized by controlling the distance between the first magnetic body 111 and the second magnetic body 121 to be smaller than the distance between the second magnetic body 121 and the third magnetic body 211.
Embodiment III: the first magnetic body 111 is a permanent magnet, the second magnetic body 121 is an iron sheet, and the third magnetic body 211 is a permanent magnet.
Embodiment four: the first magnetic body 111 is a permanent magnet, the second magnetic body 121 is an iron sheet, the third magnetic body 211 is a permanent magnet, and the magnitudes of magnetic fields generated by the first magnetic body 111 and the third magnetic body 211 are equal, when the air pump 2 and the air tap 1 are magnetically attracted through the check valve assembly 12, the distance between the first magnetic body 111 and the second magnetic body 121 is smaller than the distance between the second magnetic body 121 and the third magnetic body 211. By controlling the distance, it is also possible to control the magnetic force generated between the second magnetic body 121 and the first magnetic body 111 to be larger than the magnetic force generated between the third magnetic body 211 and the second magnetic body 121.
Embodiment four: the magnitude of the magnetic field generated by the first magnetic body 111 is larger than the magnitude of the magnetic field generated by the third magnetic body 211, so that the magnetic force generated between the second magnetic body 121 and the first magnetic body 111 is controlled to be larger than the magnitude of the magnetic force generated between the third magnetic body 211 and the second magnetic body 121.
Further preferably, as shown in fig. 3, 6 and 7, the check valve assembly 12 includes a valve core 122 and a mounting seat 123, the valve core 122 is movably mounted in the mounting seat 123 along the axial direction, the top end of the air tap seat 11 is radially penetrated with a mounting groove 112 suitable for mounting the mounting seat 123, the notch of the mounting groove 112 is upward, the mounting seat 123 is radially outwards convexly provided with a lug 1232, and the lug 1232 is mounted in the mounting groove 112.
The mounting groove 112 suitable for mounting the mounting seat 123 is formed in the top end of the air tap seat 11 in a penetrating manner in the radial direction, so that the one-way valve assembly 12 can be conveniently dismounted, and as the mounting groove 112 is formed in the penetrating manner in the radial direction, a user can directly dismount the one-way valve assembly 12 and the air tap seat 11 by abutting against the circumferential outer wall of the mounting seat 123. And the installation groove 112 can also increase the tightness between the one-way valve assembly 12 and the air tap seat 11. The lugs 1232 are provided to provide for better removal of the check valve assembly 12, and the user may effect removal of the check valve assembly 12 by grasping the lugs 1232.
Further preferably, as shown in fig. 4, a limiting groove 1231 is provided on an axial end surface of the mounting base 123, and the air flow connector 21 is provided with a limiting protrusion 212 matching with the limiting groove 1231 along an axial protrusion, and the air flow connector 21 is adapted to achieve preliminary positioning with the mounting base 123 through the limiting protrusion 212. In this particular embodiment, the limiting groove 1231 is circumferentially disposed to form a complete annular groove; in other embodiments, the limiting groove 1231 may be a groove in other directions, such as a semicircular groove, so long as the preliminary positioning of the air connector 21 and the mounting base 123 can be achieved. The position of the mounting seat 123 and the air flow joint 21 are easier to locate by arranging the limiting protrusion 212 and the limiting groove 1231, so that the air tap 1 and the air flow joint 21 can be conveniently disassembled and assembled.
The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a structure is inhaled to magnetism of air pump and air cock, includes air pump and air cock, its characterized in that, the air cock contains air cock seat and check valve subassembly, the check valve subassembly can commutate the dismouting and set up on the air cock seat to be connected rather than magnetism, be provided with the air current joint on the air pump, the air current joint with check valve subassembly magnetism is connected, the check valve subassembly with magnetic force between the air cock seat is greater than the air current joint with magnetic force between the check valve subassembly.
2. The magnetic attraction structure of the air pump and the air nozzle as set forth in claim 1, wherein: the air tap is characterized in that a first magnetic body is arranged on the air tap seat, a second magnetic body is arranged on the one-way valve assembly, a third magnetic body is arranged on the air flow joint, magnetic attraction is generated between the first magnetic body and the second magnetic body, magnetic attraction is generated between the second magnetic body and the third magnetic body, and magnetic attraction generated between the second magnetic body and the first magnetic body is larger than magnetic attraction generated between the third magnetic body and the second magnetic body.
3. The magnetic attraction structure of the air pump and the air nozzle according to claim 2, wherein: the magnitude of the magnetic attraction force is determined by the strength of the magnetic field of each magnetic body or by the interval between the magnetic bodies.
4. A magnetic attraction structure of an air pump and an air tap as claimed in claim 3, wherein: the first magnetic body is an iron sheet, the second magnetic body is a permanent magnet, and the third magnetic body is an iron sheet or a permanent magnet.
5. A magnetic attraction structure of an air pump and an air tap as claimed in claim 3, wherein: the first magnetic body is a permanent magnet, the second magnetic body is an iron sheet, and the third magnetic body is a permanent magnet.
6. The magnetic attraction structure of the air pump and the air nozzle as set forth in claim 4, wherein: the third magnetic body is an iron sheet, the first magnetic body and the third magnetic body are identical in size, shape and material, and when the air pump and the air tap are magnetically attracted through the one-way valve assembly, the distance between the first magnetic body and the second magnetic body is smaller than the distance between the second magnetic body and the third magnetic body.
7. The magnetic attraction structure of the air pump and the air nozzle as set forth in claim 5, wherein: the magnetic fields generated by the first magnetic body and the third magnetic body are equal in size, and when the air pump and the air tap are magnetically attracted through the one-way valve assembly, the distance between the first magnetic body and the second magnetic body is smaller than the distance between the second magnetic body and the third magnetic body.
8. The magnetic attraction structure of the air pump and the air nozzle as set forth in claim 5, wherein: the magnitude of the magnetic field generated by the first magnetic body is larger than that of the magnetic field generated by the third magnetic body.
9. The magnetic attraction structure of the air pump and the air nozzle as claimed in claim 2, wherein: the one-way valve assembly is provided with lugs protruding outwards along the radial direction, the top end of the air tap seat is provided with a mounting groove in a penetrating way along the radial direction, and the lugs are suitable for being mounted in the mounting groove.
10. The magnetic attraction structure of the air pump and the air nozzle as set forth in claim 9, wherein: the check valve assembly comprises a check valve assembly, and is characterized in that a limiting groove is formed in the axial end face of the check valve assembly, a limiting protrusion matched with the limiting groove is arranged on the air flow connector in an axially protruding mode, and the air flow connector is suitable for achieving primary positioning with the check valve assembly through the limiting protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466707.2U CN220168113U (en) | 2023-06-09 | 2023-06-09 | Magnetic attraction structure of air pump and air tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466707.2U CN220168113U (en) | 2023-06-09 | 2023-06-09 | Magnetic attraction structure of air pump and air tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168113U true CN220168113U (en) | 2023-12-12 |
Family
ID=89059868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321466707.2U Active CN220168113U (en) | 2023-06-09 | 2023-06-09 | Magnetic attraction structure of air pump and air tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168113U (en) |
-
2023
- 2023-06-09 CN CN202321466707.2U patent/CN220168113U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4775301A (en) | Oscillating electromagnetic pump with one-way diaphragm valves | |
| CA2816029A1 (en) | Magnetic array for coupling fluid delivery components | |
| CN209180369U (en) | Electric expansion valve | |
| CN220168113U (en) | Magnetic attraction structure of air pump and air tap | |
| CN110761993B (en) | Plug-type antiseized even plunger electromagnetic pump | |
| WO2019014396A1 (en) | System and method for high flow valve | |
| CN107401630A (en) | Miniature self-locking valve and its control method | |
| CN214425166U (en) | Electromagnetic valve | |
| CN211314536U (en) | Plug-type antiseized even plunger electromagnetic pump | |
| CN209671670U (en) | Anti- water solenoid valve and electrical equipment with it | |
| CN219452350U (en) | Self-identification structure of air pump joint and air tap | |
| EP0340684B1 (en) | Bearing equipment for vacuum device | |
| CN220505948U (en) | Monostable electromagnetic valve with manual pressure relief function | |
| CN216843083U (en) | Magnet sealing ring | |
| CN220930346U (en) | Valve seat and electromagnetic pump provided with same | |
| CN215981332U (en) | Water tap inner core with rotary joint inner core | |
| CN212593683U (en) | Connecting structure of ring pipe and leg pipe for trampoline | |
| CN219570960U (en) | Air valve structure | |
| CN201062675Y (en) | Permanent magnetism type gas one-way valve | |
| CN213393558U (en) | Valve seal assembly | |
| CN210564704U (en) | Magnetizing device | |
| CN216555908U (en) | Split elbow fluid connector | |
| CN218408730U (en) | Self-holding electromagnetic valve | |
| CN211474544U (en) | Novel integrated vacuum generator | |
| CN208997433U (en) | A kind of bistable electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |