CN112901843A - Magnetic driving device without valve rod - Google Patents
Magnetic driving device without valve rod Download PDFInfo
- Publication number
- CN112901843A CN112901843A CN202110068885.9A CN202110068885A CN112901843A CN 112901843 A CN112901843 A CN 112901843A CN 202110068885 A CN202110068885 A CN 202110068885A CN 112901843 A CN112901843 A CN 112901843A
- Authority
- CN
- China
- Prior art keywords
- shell
- protective shell
- fixedly connected
- valveless
- iron core
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a magnetic driving device without a valve rod, which comprises a protective shell, wherein a reinforcing rib is fixedly connected to the inner wall of the protective shell, a mounting seat is fixedly connected to the inside of a port of the protective shell, a coil is assembled in the protective shell, an iron core is coaxially arranged in the coil, a containing groove is formed in the end face, adjacent to the iron core, of the mounting seat, a sleeve is arranged in the containing groove, a connecting column is arranged outside the port of the sleeve, a base plate is fixedly connected to the other end of the connecting column, the base plate is mutually attached to the end face of the iron core, a round hole penetrates through the outer side, adjacent to the mounting seat, of the protective shell, the round hole penetrates through the mounting seat and is communicated with; the round hole is used for electrifying the coil, the iron core is magnetized by the electrified coil, the magnetized iron core provides magnetic force, the magnetic force penetrates through the cover plate to act on the valve opening and closing piece in an isolated mode, the switch is directly realized, the conventional valve rod is not needed to be connected with the opening and closing piece, and the valve rod-free opening and closing are directly realized in an isolated mode.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a magnetic driving device without a valve rod.
Background
Ball valves appear in the 50 th of the 20 th century, along with rapid development of scientific technology and continuous improvement of production technology and product structures, the ball valves are rapidly developed into main valves in short 40 years, the use of the ball valves is continuously rising year by year in countries with developed western industries, and the existing ball valves on the market still have various defects and cannot meet the requirements of production and life;
for example, in the existing ball valve, the valve rod drives the opening and closing piece, and the mechanical driving of the valve rod has the problem of sealing performance, so that a magnetic driving device without the valve rod is provided.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the magnetic driving device without the valve rod, the coil is electrified through the round hole, the iron core is magnetized by the electrified coil, the magnetized iron core provides magnetic force, the magnetic force acts on the valve opening and closing piece through the cover plate in an air-separating mode, the valve is directly opened and closed, the conventional valve rod is not needed to be connected with the opening and closing piece, and the valve rod-free air-separating opening and closing are directly realized.
In order to solve the technical problems, the invention provides the following technical scheme: a magnetic driving device without a valve rod comprises a protective shell, wherein a reinforcing rib is fixedly connected to the inner wall of the protective shell, a mounting seat is fixedly connected to the inside of a port of the protective shell, a coil is assembled inside the protective shell, an iron core is coaxially arranged inside the coil, a containing groove is formed in the end face, adjacent to the iron core, of the mounting seat, a sleeve is arranged inside the containing groove, a fixing frame is fixedly connected with the sleeve and the inner wall of the containing groove, a spring is axially arranged inside the sleeve, a connecting column is arranged outside the port of the sleeve, a pressing sheet is fixedly connected inside the port of the sleeve by the connecting column, the end face of the pressing sheet is mutually attached to the spring, a backing plate is fixedly connected to the other end of the connecting column, the backing plate is mutually attached to the end face of the iron core, a round hole is formed in, the round hole penetrates through the mounting seat to be communicated with the coil, and the other port of the protective shell is covered with a cover plate.
Preferably, the protective shell comprises a first shell and a second shell, and the first shell and the second shell are centrosymmetric and have one-to-one external dimension.
Preferably, a clamping groove is formed in the end face of one side, adjacent to the second shell, of the first shell, and a buckle is fixedly connected to the end face of the other side, adjacent to the second shell, of the first shell.
Preferably, the buckle corresponds to and is fixed with the draw-in groove each other, first shell and second shell laminate and parallel and level each other.
Preferably, the inner surface of the protective shell is covered and fixed with a rubber pad, and the outer surface of the protective shell is covered and fixed with a decorative sticker.
Preferably, an isolation film is fixedly connected to the inner wall of the protective shell, and the isolation film comprises a base film layer, an insulating layer, a shielding layer and a protective layer.
Preferably, base membrane layer, insulating layer, shielding layer and protective layer laminate in proper order, base membrane layer, insulating layer, shielding layer and protective layer overall dimension equal.
Preferably, the insulating layer contains a particulate material having an average particle diameter of 20 μm or more.
Preferably, the shielding layer is one or more of a gold, silver, copper, nickel, aluminum, titanium, iron, cobalt or carbon nano shielding layer, a ferrite shielding layer and a graphene shielding layer.
Preferably, the material of the protective layer comprises any one of or a combination of at least two of polyacrylic resin, epoxy resin or polyurethane.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. the coil is electrified through the circular hole, the iron core is magnetized through the electrified coil, the magnetized iron core provides magnetic force, the magnetic force acts on the valve opening and closing piece through the cover plate in an air-separating mode, the valve is directly opened and closed, a conventional valve rod is not needed to be connected with the opening and closing piece, and the valve rod-free air-separating opening and closing are directly achieved;
2. the base plate resists the iron core to enable the iron core to be assembled and fixed with the coil, and meanwhile, the base plate can compress the spring to deform to a certain degree, so that the iron core is assembled with the coil safely and stably in the transportation process;
3. the splicing assembly between the first shell and the second shell is beneficial to the quick assembly and disassembly of the protective shell, namely the assembly, subsequent maintenance, repair and replacement of the coil and the iron core in the protective shell;
4. the inside barrier film of protecting crust inner wall isolates the electromagnetic wave of external overwhelming majority, guarantees the stable cooperation operation of coil and iron core, avoids external electromagnetic wave to produce the interference to the device operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an assembly view of the tie plate of the present invention;
FIG. 3 is a schematic view of a protective shell according to the present invention;
FIG. 4 is a schematic view of the housing of the present invention;
FIG. 5 is a cross-sectional view of a protective shell according to the present invention;
FIG. 6 is a cross-sectional view of a separator according to the present invention.
Wherein: 1. a protective shell; 2. a coil; 3. a circular hole; 4. a receiving groove; 5. a mounting seat; 6. a base plate; 7. an iron core; 8. a cover plate; 9. tabletting; 10. a sleeve; 11. a spring; 12. a fixed mount; 13. connecting columns; 14. a first housing; 15. a second housing; 16. reinforcing ribs; 17. a card slot; 18. buckling; 19. a rubber pad; 20. an isolation film; 21. decorating the paste; 22. a base film layer; 23. an insulating layer; 24. a shielding layer; 25. and a protective layer.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Examples
Referring to fig. 1 and 2, the present invention provides a valve-stem-free magnetic driving device, including a protective shell 1, a reinforcing rib 16 fixedly connected to an inner wall of the protective shell 1, a mounting seat 5 fixedly connected to an inner side of a port of the protective shell 1, a coil 2 assembled in the protective shell 1, an iron core 7 coaxially disposed in the coil 2, a housing groove 4 disposed on an end surface of the mounting seat 5 adjacent to the iron core 7, a sleeve 10 disposed in the housing groove 4, a fixing frame 12 fixedly connected to an inner wall of the sleeve 10 and the housing groove 4, a spring 11 axially disposed in the sleeve 10, a connecting column 13 disposed outside the port of the sleeve 10, a pressing piece 9 fixedly connected to the connecting column 13 in the port of the sleeve 10, an end surface of the pressing piece 9 and the spring 11 being attached to each other, a backing plate 6 fixedly connected to another end of the connecting column 13, and an end surface of the, the protection shell 1 is provided with a round hole 3 in a penetrating mode adjacent to the outer side of the mounting seat 5, the round hole 3 penetrates through the mounting seat 5 and is communicated with the coil 2, the cover plate 8 is arranged at the other port of the protection shell 1 in a covering mode, the coil 2 is electrified through the round hole 3, the iron core 7 is magnetized through the electrified coil 2, the magnetized iron core 7 provides magnetic force, the magnetic force acts on the valve opening and closing piece through the cover plate 8 in a spaced mode, switching is directly achieved, the conventional valve rod linkage opening and closing piece is not needed, the valve rod-free opening and closing in the spaced mode are directly achieved, the iron core 7 is resisted by the backing plate 6 to be assembled and fixed with the coil 2, meanwhile, the backing plate 6 can compress the spring 11 to deform to a certain degree;
as another embodiment of the present invention, as shown in fig. 3, 4 and 5, the present invention discloses that the protective shell 1 includes a first shell 14 and a second shell 15, the first shell 14 and the second shell 15 are centrosymmetric and have one-to-one external dimension, a slot 17 is disposed on an end surface of one side adjacent to the first shell 14 and the second shell 15, a buckle 18 is fixedly connected to an end surface of the other side adjacent to the first shell 14 and the second shell 15, the buckle 18 and the slot 17 are corresponding and fixed to each other, the first shell 14 and the second shell 15 are mutually attached and flush, a rubber pad 19 is fixedly covered on an inner surface of the protective shell 1, a decorative sticker 21 is fixedly covered on an outer surface of the protective shell 1, the decorative sticker 21 enhances an aesthetic measure of the protective shell 1, the first shell 14 and the second shell 15 are spliced together to facilitate quick assembly and disassembly of the protective shell 1, the assembly, the subsequent maintenance repair and the replacement of the coil 2 and the iron core 7 in the protective shell 1 are facilitated;
as another embodiment of the present invention, as shown in fig. 5 and 6, the present invention discloses that an isolation film 20 is fixedly connected inside an inner wall of a protective shell 1, the isolation film 20 includes a base film layer 22, an insulating layer 23, a shielding layer 24 and a protective layer 25, the base film layer 22, the insulating layer 23, the shielding layer 24 and the protective layer 25 are sequentially attached, the base film layer 22, the insulating layer 23, the shielding layer 24 and the protective layer 25 have the same outer dimensions, the insulating layer 23 includes a particulate substance, the average particle size of the particulate substance is more than 20 μm, the shielding layer 24 is one or more of gold, silver, copper, nickel, aluminum, titanium, iron, cobalt or carbon nano-shielding layers, ferrite shielding layers and graphene shielding layers, the material of the protective layer 25 includes any one or a combination of at least two of polyacrylic resin, epoxy resin or polyurethane, the isolation film 20 inside the inner wall of the protective shell 1 isolates most of electromagnetic waves from the outside, the stable matching operation of the coil 2 and the iron core 7 is ensured, and the interference of external electromagnetic waves to the operation of the device is avoided;
according to the valve-rod-free magnetic driving device, the coil 2 is electrified through the round hole 3, the iron core 7 is magnetized by the electrified coil 2, the magnetized iron core 7 provides magnetic force, the magnetic force acts on the valve opening and closing piece through the cover plate 8 in an air-separating manner, the valve is directly opened and closed, the conventional valve rod is not required to be connected with the opening and closing piece, and the valve-rod-free air-separating opening and closing are directly realized; the cushion plate 6 resists the iron core 7 to enable the iron core 7 to be assembled and fixed with the coil 2, and meanwhile, the cushion plate 6 can compress the spring 11 to deform to a certain degree, so that the iron core 7 is ensured to be assembled with the coil 2 safely and stably in the transportation process; the first shell 14 and the second shell 15 are spliced and assembled to facilitate the rapid disassembly and assembly of the protective shell 1, namely the assembly and subsequent maintenance, repair and replacement of the coil 2 and the iron core 7 in the protective shell 1; the barrier film 20 inside the inner wall of the protective shell 1 isolates most of the outside electromagnetic waves, so that the stable matching operation of the coil 2 and the iron core 7 is ensured, and the interference of the outside electromagnetic waves to the operation of the device is avoided.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A valveless magnetic drive device, comprising a protective casing (1), characterized in that: the inner wall of the protective shell (1) is fixedly connected with a reinforcing rib (16), the port of the protective shell (1) is fixedly connected with a mounting seat (5), the protective shell (1) is internally provided with a coil (2), the coil (2) is coaxially provided with an iron core (7) inside, the mounting seat (5) is provided with an accommodating groove (4) adjacent to the end face of the iron core (7), the accommodating groove (4) is internally provided with a sleeve (10), the sleeve (10) and the inner wall of the accommodating groove (4) are fixedly connected with a fixing frame (12), the sleeve (10) is axially provided with a spring (11) inside, the port of the sleeve (10) is externally provided with a connecting column (13), the connecting column (13) is fixedly connected with a pressing sheet (9) inside the port of the sleeve (10), and the end face of the pressing sheet (9) is mutually attached to the spring (11), the other end fixedly connected with backing plate (6) of spliced pole (13), backing plate (6) laminates with the terminal surface of iron core (7) each other, round hole (3) have been seted up in the outside that protecting crust (1) are adjacent to mount pad (5) is run through, round hole (3) run through mount pad (5) and coil (2) and communicate each other, another port cover of protecting crust (1) is provided with apron (8).
2. A valveless magnetic drive according to claim 1, wherein: the protective shell (1) comprises a first shell (14) and a second shell (15), wherein the first shell (14) and the second shell (15) are centrosymmetric, and the external dimensions are one to one.
3. A valveless magnetic drive according to claim 2, wherein: a clamping groove (17) is formed in the end face of one side, adjacent to the first shell (14) and the second shell (15), of the first shell, and a buckle (18) is fixedly connected to the end face of the other side, adjacent to the second shell (15), of the first shell (14).
4. A valveless magnetic drive according to claim 3, wherein: buckle (18) and draw-in groove (17) correspond each other and are fixed, first shell (14) and second shell (15) laminate each other and parallel and level.
5. A valveless magnetic drive according to claim 1, wherein: the protective shell is characterized in that a rubber pad (19) covers and is fixed on the inner surface of the protective shell (1), and a decorative sticker (21) covers and is fixed on the outer surface of the protective shell (1).
6. A valveless magnetic drive according to claim 1, wherein: the inner wall of the protective shell (1) is fixedly connected with an isolation film (20), and the isolation film (20) comprises a base film layer (22), an insulating layer (23), a shielding layer (24) and a protective layer (25).
7. A valveless magnetic drive according to claim 6, wherein: the base film layer (22), the insulating layer (23), the shielding layer (24) and the protective layer (25) are sequentially attached, and the outer dimensions of the base film layer (22), the insulating layer (23), the shielding layer (24) and the protective layer (25) are equal.
8. A valveless magnetic drive according to claim 6, wherein: the insulating layer (23) contains a particulate substance having an average particle diameter of 20 [ mu ] m or more.
9. A valveless magnetic drive according to claim 6, wherein: the shielding layer (24) is one or more of a gold, silver, copper, nickel, aluminum, titanium, iron, cobalt or carbon nano shielding layer, a ferrite shielding layer and a graphene shielding layer.
10. A valveless magnetic drive according to claim 6, wherein: the material of the protective layer (25) comprises any one or a combination of at least two of polyacrylic resin, epoxy resin or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068885.9A CN112901843B (en) | 2021-01-19 | 2021-01-19 | Magnetic driving device without valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068885.9A CN112901843B (en) | 2021-01-19 | 2021-01-19 | Magnetic driving device without valve rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112901843A true CN112901843A (en) | 2021-06-04 |
| CN112901843B CN112901843B (en) | 2023-01-20 |
Family
ID=76115571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110068885.9A Active CN112901843B (en) | 2021-01-19 | 2021-01-19 | Magnetic driving device without valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901843B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986837Y (en) * | 2006-11-24 | 2007-12-05 | 杜明德 | Improvement on electro-magnet structure |
| CN101452793A (en) * | 2007-11-29 | 2009-06-10 | 周柔刚 | Oil protection direct-action electricity relay |
| CN201301762Y (en) * | 2008-11-26 | 2009-09-02 | 胜利油田胜利动力机械集团有限公司 | Low pressure gas electric injecting valve |
| CN201927449U (en) * | 2010-12-10 | 2011-08-10 | 梁昌勇 | Shock-absorbing device for double-push magnetic device |
| CN202199416U (en) * | 2011-07-12 | 2012-04-25 | 镇江电磁设备厂有限责任公司 | Water cooling electric magnetic iron remover |
| US20130153800A1 (en) * | 2010-06-24 | 2013-06-20 | Friedbert Roether | Electromagnetic valve device with an armature guiding tube which is supported at the head side and relieved of loading on the floor side |
| CN104565391A (en) * | 2014-12-31 | 2015-04-29 | 瑞安市东方阀门有限公司 | Anti-vibration solenoid valve |
| CN204878514U (en) * | 2015-05-18 | 2015-12-16 | 中国人民解放军海军工程大学 | Type that shocks resistance owner mixes isolator passively |
| CN107314148A (en) * | 2017-06-26 | 2017-11-03 | 杭州强邦精密机械电器有限公司 | New structure adjusting spool device and adjusting spool method |
| CN207611669U (en) * | 2017-12-18 | 2018-07-13 | 东莞市浩盈电子有限公司 | Transformer coil with insulation crust |
| CN208873570U (en) * | 2018-07-04 | 2019-05-17 | 重庆三峡学院 | Bridge Rotation Construction Technique power-assisted electromagnet |
| CN210925638U (en) * | 2019-09-27 | 2020-07-03 | 佛山市顺德区航腾电子有限公司 | Disc type electromagnet |
| CN111447819A (en) * | 2020-04-20 | 2020-07-24 | 昆山博益鑫成高分子材料有限公司 | Electromagnetic shielding film |
-
2021
- 2021-01-19 CN CN202110068885.9A patent/CN112901843B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986837Y (en) * | 2006-11-24 | 2007-12-05 | 杜明德 | Improvement on electro-magnet structure |
| CN101452793A (en) * | 2007-11-29 | 2009-06-10 | 周柔刚 | Oil protection direct-action electricity relay |
| CN201301762Y (en) * | 2008-11-26 | 2009-09-02 | 胜利油田胜利动力机械集团有限公司 | Low pressure gas electric injecting valve |
| US20130153800A1 (en) * | 2010-06-24 | 2013-06-20 | Friedbert Roether | Electromagnetic valve device with an armature guiding tube which is supported at the head side and relieved of loading on the floor side |
| CN201927449U (en) * | 2010-12-10 | 2011-08-10 | 梁昌勇 | Shock-absorbing device for double-push magnetic device |
| CN202199416U (en) * | 2011-07-12 | 2012-04-25 | 镇江电磁设备厂有限责任公司 | Water cooling electric magnetic iron remover |
| CN104565391A (en) * | 2014-12-31 | 2015-04-29 | 瑞安市东方阀门有限公司 | Anti-vibration solenoid valve |
| CN204878514U (en) * | 2015-05-18 | 2015-12-16 | 中国人民解放军海军工程大学 | Type that shocks resistance owner mixes isolator passively |
| CN107314148A (en) * | 2017-06-26 | 2017-11-03 | 杭州强邦精密机械电器有限公司 | New structure adjusting spool device and adjusting spool method |
| CN207611669U (en) * | 2017-12-18 | 2018-07-13 | 东莞市浩盈电子有限公司 | Transformer coil with insulation crust |
| CN208873570U (en) * | 2018-07-04 | 2019-05-17 | 重庆三峡学院 | Bridge Rotation Construction Technique power-assisted electromagnet |
| CN210925638U (en) * | 2019-09-27 | 2020-07-03 | 佛山市顺德区航腾电子有限公司 | Disc type electromagnet |
| CN111447819A (en) * | 2020-04-20 | 2020-07-24 | 昆山博益鑫成高分子材料有限公司 | Electromagnetic shielding film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112901843B (en) | 2023-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202231981U (en) | Electronic product of consumers | |
| CN101540239B (en) | Key structure | |
| CN102859620A (en) | Reactor | |
| CN202230735U (en) | Consumer electronic product and media player | |
| CN209659021U (en) | A kind of disc type electric machine | |
| CN112901843B (en) | Magnetic driving device without valve rod | |
| JP2007142081A (en) | Transmission coil, contactless charger, contactless rechargeable equipment, manufacturing method of transmission coil and contactless power transmission system | |
| CN201896988U (en) | Electromagnetic valve | |
| CN2441958Y (en) | Magnetic suction disc anti-explosion door | |
| CN209414738U (en) | A kind of pneumatic high-frequency electromagnetic valve of cartridge multi-airway | |
| CN103915272B (en) | A kind of have waterproof and resist the operation keyboard pounding structure | |
| JPH0440671B2 (en) | ||
| CN208093327U (en) | Transformer core | |
| US20240234027A1 (en) | Wireless power-charging module | |
| CN201130410Y (en) | Sound magnetic anti-theft warning piece using plastic rubber hard magnetic off-set piece | |
| CN201732707U (en) | Sealing film keyboard switch | |
| CN206864363U (en) | A kind of waterproof feather key structure for electronic product | |
| CN217704820U (en) | Pressure maintaining device | |
| CN214753197U (en) | Inductance element of bending-free end piece | |
| CN201986138U (en) | Super-thin high power loudspeaker | |
| CN217824434U (en) | Induction coil assembly structure and urine detector | |
| CN220231850U (en) | Measurement transformer with broken wire alarming function | |
| CN207441532U (en) | A kind of microswitch | |
| CN216119765U (en) | Draw magnetic ring | |
| CN218352540U (en) | Magnetic attraction structure of portable electronic equipment protective shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |