CN108231441B - Contact structure - Google Patents
Contact structure Download PDFInfo
- Publication number
- CN108231441B CN108231441B CN201810200372.7A CN201810200372A CN108231441B CN 108231441 B CN108231441 B CN 108231441B CN 201810200372 A CN201810200372 A CN 201810200372A CN 108231441 B CN108231441 B CN 108231441B
- Authority
- CN
- China
- Prior art keywords
- contact
- blade
- assembly
- movable
- movable contact
- 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
- 230000009471 action Effects 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims description 12
- ASMQPJTXPYCZBL-UHFFFAOYSA-N [O-2].[Cd+2].[Ag+] Chemical compound [O-2].[Cd+2].[Ag+] ASMQPJTXPYCZBL-UHFFFAOYSA-N 0.000 claims description 9
- IVQODXYTQYNJFI-UHFFFAOYSA-N oxotin;silver Chemical compound [Ag].[Sn]=O IVQODXYTQYNJFI-UHFFFAOYSA-N 0.000 claims description 9
- 238000000429 assembly Methods 0.000 abstract description 24
- 230000000712 assembly Effects 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
Abstract
The invention discloses a contact structure which comprises two moving contact assemblies which are opposite in position and movably connected to an action frame through a connecting shaft, wherein the two moving contact assemblies are contacted through an insulated moving contact spring, and the two moving contact assemblies are connected through a soft connecting piece; the movable contact assembly is characterized by further comprising two covers which are respectively positioned on two sides of the action frame, wherein the covers are movably connected with fixed contact assemblies through connecting shafts, the fixed contact assemblies correspond to the movable contact assemblies on the same side in position and are positioned in the stroke of the movable contact assemblies, the side walls of the covers are connected with the fixed contact assemblies in the side walls of the covers through fixed contact springs, copper bars are connected to the covers, and the fixed contact assemblies are connected with the copper bars through soft connecting pieces. The contact structure has the advantages of small opening distance, compact structure, small volume, small operating force, small impact energy, small maintenance suction force, small contact bounce in the closing process, large contact pressure, small contact resistance, self-cleaning contact and easy quick disconnection of the contact.
Description
Technical Field
The invention belongs to the technical field of piezoelectric devices, and particularly relates to a contact structure.
Background
The contact structure mainly used in the existing contact piezoelectric device has a finger structure and a bridge structure.
The finger structure has the following advantages: rolling and sliding friction are generated in the breaking process, so that oxides on the surface of the contact can be removed; high contact pressure and high electric stability. Has the following disadvantages: a fracture, a large opening distance and a large volume of the electrical appliance; the contact closing impact energy is large and the mechanical life is low.
The bridge structure has the following advantages: two serial breaks, two effective arc extinguishing areas; the opening distance is small, and the electric appliance structure is compact; the contact closing impact energy is small. Has the following disadvantages: the contact cannot self-clean; the contact pressure is small, and the electric stability is low.
Aiming at the defects of the common contact structure, it is very necessary to design a contact structure which can be self-cleaned, has small opening distance, small volume, high electric stability and small impact energy.
Disclosure of Invention
The invention aims to provide a contact structure which is small in size and small in opening distance, reduces impact energy and improves electric stability.
The technical scheme adopted by the invention is as follows: the contact structure comprises two moving contact assemblies which are opposite in position and movably connected to an action frame through a connecting shaft, wherein the two moving contact assemblies are contacted through an insulated moving contact spring, and the two moving contact assemblies are connected through a soft connecting piece; the movable contact assembly is characterized by further comprising two covers which are respectively positioned on two sides of the action frame, wherein the covers are movably connected with fixed contact assemblies through connecting shafts, the fixed contact assemblies correspond to the movable contact assemblies on the same side in position and are positioned in the stroke of the movable contact assemblies, the side walls of the covers are connected with the fixed contact assemblies in the side walls of the covers through fixed contact springs, copper bars are connected to the covers, and the fixed contact assemblies are connected with the copper bars through soft connecting pieces.
The present invention is also characterized in that,
each movable contact assembly comprises a movable contact seat movably connected to the action frame through a connecting shaft, the movable contact seat is C-shaped, two opening ends of the movable contact seat are respectively connected with a middle contact blade, and a connecting section of the movable contact seat is connected with a movable contact blade.
The movable contact blade is rectangular, circular or special-shaped, and the middle contact blade is rectangular, circular or special-shaped.
The surface of the movable contact blade is a plane or an arc surface, and the surface of the middle contact blade is a plane or an arc surface.
The movable contact seat is made of copper, the movable contact blade is made of silver tin oxide or silver cadmium oxide, and the middle contact blade is made of silver tin oxide or silver cadmium oxide.
The static contact assembly comprises a static contact seat movably connected in the housing through the connecting shaft, and two static contact blades are arranged on one side of the static contact seat, which is opposite to the moving contact blade.
The shape of the fixed contact blade is rectangular, circular or special-shaped.
The surface of the fixed contact blade is a plane or an arc surface.
The static contact seat is made of copper, and the static contact blade is made of silver tin oxide or silver cadmium oxide.
And a notch is arranged on one side of the fixed contact blade.
The beneficial effects of the invention are as follows: the contact structure has the advantages of small opening distance, compact structure, small volume, small operating force, small impact energy, small maintenance suction force, small contact bounce in the closing process, large contact pressure, small contact resistance, self-cleaning contact and easy quick disconnection of the contact.
Drawings
FIG. 1 is a schematic view of the overall structure of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a closing process of a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a preferred embodiment of the present invention in a fully closed state;
FIG. 4 is a schematic illustration of a breaking process according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the stationary contact assembly of the present invention;
FIG. 6 is a schematic view of the moving contact assembly of the present invention;
FIG. 7 is a schematic view of the structure of the action frame of the present invention;
fig. 8 is a schematic structural view of the housing of the present invention.
In the figure, the movable contact assembly comprises a movable frame, a movable contact assembly, a flexible connecting piece, a connecting shaft, a movable contact spring, a fixed contact assembly, a fixed contact spring, a housing, a copper bar, a fastener, a movable contact seat, a movable contact blade, a middle contact blade, a fixed contact seat and a fixed contact blade.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The contact structure of the invention is shown in fig. 1-8, and comprises an action frame 1, two movable contact assemblies 2, a flexible connecting piece 3, a connecting shaft 4, an insulated movable contact spring 5, two fixed contact assemblies 6, two fixed contact springs 7, two housings 8, two copper bars 9 and a plurality of fasteners 10. The two movable contact assemblies 2 are movably connected to the action frame 1 through a connecting shaft 4; the movable contact spring 5 is positioned between the two movable contact assemblies 2 and is in contact with the two movable contact assemblies 2; the movable contact assembly 2 is fixedly connected with the flexible connecting piece 3 through a fastener 10; the two housings 8 are respectively positioned at two sides of the action frame 1, the static contact assembly 6 is movably connected in the housings 8 through the connecting shaft 4 and can rotate around the connecting shaft 4, and the static contact assembly 6 is positioned in the stroke of the moving contact assembly 2 and can be contacted with the moving contact assembly 2; the copper bar 9 is connected with the housing 8 through a fastener 10, and the fixed contact assembly 6 and the flexible connecting piece 3 are fixedly connected through the fastener 10. The movable contact spring 5 and the housing 8 are made of insulating materials.
Specifically, as shown in fig. 5, the movable contact assembly 2 includes a movable contact seat 21 movably connected to the actuating frame 1 through a connecting shaft 4, the movable contact seat 21 is C-shaped and is composed of two open ends and a connecting section connecting the two open ends, the openings of the two movable contact seats 21 are oppositely arranged, the two open ends of the movable contact seat 21 are respectively connected with a middle contact blade 23, and the connecting section of the movable contact seat 21 is connected with a movable contact blade 22.
Preferably, the movable contact blade 22 is one of rectangular, circular and special-shaped, preferably rectangular; the intermediate contact blade 23 is one of rectangular, circular, and shaped, preferably rectangular.
Further, the surface of the movable contact piece 22 is a plane or an arc surface, preferably a plane; the surface of the intermediate contact blade 23 is a plane or an arc surface, preferably an arc surface. When the middle contact piece 23 is a cambered surface, certain deformation can occur when the two middle contact pieces 23 are contacted, and the effect is due to the planar laminating contact mode when the two middle contact pieces are planar.
Further, the movable contact seat 21 is made of copper; the movable contact piece 22 is made of one of silver tin oxide and silver cadmium oxide; the middle contact piece 23 is made of one of silver tin oxide and silver cadmium oxide.
Specifically, as shown in fig. 6, the stationary contact assembly 6 includes a stationary contact seat 61 movably connected to the housing 8 through the connecting shaft 4, and two stationary contact blades are disposed on a side of the stationary contact seat 61 opposite to the moving contact blade 22.
Further, the fixed contact blade 62 is one of rectangular, circular and special-shaped, preferably rectangular; the surface of the fixed contact blade 62 is a plane or an arc surface, preferably an arc surface. When the surface of the moving contact piece 22 is a plane and contacts with the cambered surface of the fixed contact piece 62, the fixed contact piece 62 undergoes micro-shape change to be beneficial to the mutual contact with the moving contact piece 22, and when the contact structure is completely closed, the deformation of the two fixed contact pieces 62 is completely the same.
Further, the material of the stationary contact seat 61 is copper, and the material of the stationary contact blade 62 is silver tin oxide or silver cadmium oxide.
Preferably, a notch is provided on one side of the stationary contact blade 62.
As shown in fig. 2, the contact structure of the present invention is in a just-contacted state. When the action frame 1 moves downwards, the movable contact assembly 2 is driven to move downwards, the middle contacts 23 at the lower parts of the two movable contact assemblies 2 are contacted with each other, and when the movable contact blade 22 is contacted with the fixed contact blade 62, the loop is conducted. The loop current is in the direction shown by the arrow in fig. 2 (the current direction is opposite), and the electric repulsive force between the moving contact assembly and the fixed contact assembly is smaller due to the gaps on the fixed contact blades 62. In the closing process of the movable contact assembly 2 and the fixed contact assembly 6, the resistance overcome is almost all rolling and sliding friction force between the movable contact blade 22 and the fixed contact blade 62, so that the operation force required by the action frame 1 is small and the impact energy is small; the movable contact piece 22 and the stationary contact piece 62 can be mutually cleaned; meanwhile, as the movable contact assembly 2 is acted by the fixed contact assembly 6, the bounce between the movable contact assembly 2 and the fixed contact assembly 6 is small.
As shown in fig. 3, a schematic view of the fully closed state of the contact structure of the present invention is shown. When the action frame 1 moves downwards to a preset position, the movable contact assembly 2 and the fixed contact assembly 6 are completely closed, the movable contact blade 22 and the two fixed contact blades 62 are completely contacted, the middle contact blade 23 at the upper part of the movable contact assembly 2 is contacted with each other, and the loop is conducted. The loop current is in the direction shown by the arrow in fig. 3 (the current direction is the same), and the contact pressure is large and the contact resistance is small between the moving contact assembly 2 and the fixed contact assembly 6 due to the attraction of electrodynamic force. At the same time, the contact structure is in a balanced state, and the maintenance force required for maintaining the closed state of the contact structure can be very small.
As shown in fig. 4, a schematic state diagram of the breaking process of the contact structure is shown. When the action frame 1 moves upwards, the middle contact piece 23 at the upper part of the moving contact assembly 2 is broken; the action frame 1 continues to move upwards, and the middle contacts 23 at the lower part of the moving contact assembly 2 are contacted with each other; the action frame 1 continues to move upwards, and the movable contact assembly 2 is disconnected from the fixed contact assembly 6. The loop current generates a magnetic field between the movable contact assembly 2 and the fixed contact assembly 6 in the direction shown by the arrow of fig. 4 (the current direction is opposite), the electric arc is acted by electromagnetic force F, and the electric arc moves outwards and stretches out to enter an arc extinguishing medium for arc extinguishing; meanwhile, in the disconnection process of the contact structure, the action frame 1 is subjected to upward component force due to the action of the movable contact spring 5 and the fixed contact spring 7, so that the contact structure is easier to quickly break, and arc extinction is facilitated.
From the above, the contact structure disclosed by the invention has the advantages of small opening distance, compact structure, small volume, small operating force, small impact energy, small maintenance suction force, small contact bounce in the closing process, large contact pressure, small contact resistance, self-cleaning contact and easiness in quick breaking of the contact.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (7)
1. The utility model provides a contact structure, its characterized in that includes two positions are relative, through connecting axle (4) swing joint moving contact assembly (2) on action frame (1), two moving contact assembly (2) are contacted through insulating moving contact spring (5), link to each other through flexible connector (3) between moving contact assembly (2), moving contact assembly (2) are linked firmly through fastener (10) with flexible connector (3), still include two respectively be located housing (8) of action frame (1) both sides, be connected with fixed contact assembly (6) through connecting axle (4) on housing (8), fixed contact assembly (6) and the corresponding, in the stroke of moving contact assembly (2) of homonymy, the fixed contact assembly (6) of housing (8) lateral wall and its interior pass through fixed contact spring (7) and link to each other, be connected with copper bar (9) on housing (8), fixed contact assembly (6) and copper bar (9) pass through connecting fastener (3) and be connected through housing (8) through fixed contact assembly (10); the movable contact assembly (2) comprises a movable contact seat (21) movably connected to the action frame (1) through the connecting shaft (4), the movable contact seat (21) is C-shaped, two opening ends of the movable contact seat (21) are respectively connected with a middle contact blade (23), and a connecting section of the movable contact seat (21) is connected with a movable contact blade (22); the static contact assembly (6) comprises a static contact seat (61) movably connected in the housing (8) through the connecting shaft (4), and two static contact blades (62) are arranged on one side of the static contact seat (61) opposite to the moving contact blade (22); the movable contact seat (21) is made of copper, the movable contact blade (22) is made of silver tin oxide or silver cadmium oxide, and the middle contact blade (23) is made of silver tin oxide or silver cadmium oxide.
2. A contact arrangement according to claim 1, characterized in that the movable contact blade (22) is rectangular, circular or profiled and the intermediate contact blade (23) is rectangular, circular or profiled.
3. A contact structure according to claim 1 or 2, wherein the surface of the movable contact blade (22) is a plane or an arc surface, and the surface of the intermediate contact blade (23) is a plane or an arc surface.
4. A contact structure according to claim 1, characterized in that the stationary contact blade (62) is rectangular, circular or profiled in shape.
5. A contact structure according to claim 1 or 4, characterized in that the surface of the stationary contact blade (62) is a plane or an arc.
6. A contact structure according to claim 5, wherein the stationary contact base (61) is made of copper, and the stationary contact blade (62) is made of silver tin oxide or silver cadmium oxide.
7. A contact structure according to claim 1, characterized in that one side of the stationary contact blade (62) is provided with a notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200372.7A CN108231441B (en) | 2018-03-12 | 2018-03-12 | Contact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200372.7A CN108231441B (en) | 2018-03-12 | 2018-03-12 | Contact structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108231441A CN108231441A (en) | 2018-06-29 |
| CN108231441B true CN108231441B (en) | 2024-02-20 |
Family
ID=62658311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810200372.7A Active CN108231441B (en) | 2018-03-12 | 2018-03-12 | Contact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108231441B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545586B (en) * | 2019-02-01 | 2024-04-16 | 西安开天铁路电气股份有限公司 | Contact structure |
| CN112883613B (en) * | 2021-02-08 | 2022-09-02 | 哈尔滨工业大学 | Lower limit design method for impact energy of moving contact of direct-acting electromagnetic contactor |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2144344Y (en) * | 1993-02-02 | 1993-10-20 | 李拴亮 | Contact of electrical switch |
| US6486423B1 (en) * | 2000-06-07 | 2002-11-26 | Methode Electronics, Inc. | Sliding contact mechanism |
| CN101409159A (en) * | 2007-10-12 | 2009-04-15 | 西门子公司 | Contact device with different contact forces in different operating states |
| CN102522266A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Double-breakpoint contactor contact structure adopting flexible coupling device |
| CN102522267A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Low pressure contactor sliding contact structure employing contact pressure automatic adjustment |
| CN102891040A (en) * | 2011-07-18 | 2013-01-23 | 安电株式会社 | Relay |
| CN103140910A (en) * | 2011-05-19 | 2013-06-05 | 富士电机株式会社 | Contact mechanism and electromagnetic contactor using same |
| CN103187210A (en) * | 2011-12-30 | 2013-07-03 | Ls产电株式会社 | Dc power relay |
| CN103247499A (en) * | 2012-02-03 | 2013-08-14 | Abb公司 | Hybrid current switching device |
| CN104025238A (en) * | 2011-12-21 | 2014-09-03 | 西门子公司 | Contactor |
| CN104221115A (en) * | 2012-04-13 | 2014-12-17 | 富士电机机器制御株式会社 | Contact device and electromagnetic switch using same |
| CN104916499A (en) * | 2014-03-14 | 2015-09-16 | 欧姆龙株式会社 | Electromagnetic relay |
| CN105531783A (en) * | 2013-08-29 | 2016-04-27 | 松下知识产权经营株式会社 | Contact apparatus |
| CN205723342U (en) * | 2016-05-04 | 2016-11-23 | 浙江正泰电器股份有限公司 | Relay |
| CN206401190U (en) * | 2016-11-17 | 2017-08-11 | 武汉长海电气科技开发有限公司 | The structure of contact terminal and disconnecting switch of grafting form |
| CN206758290U (en) * | 2017-04-14 | 2017-12-15 | 施耐德电器工业公司 | Electrical contact device |
| CN208061879U (en) * | 2018-03-12 | 2018-11-06 | 西安开天铁路电气股份有限公司 | A kind of contact mechanism |
-
2018
- 2018-03-12 CN CN201810200372.7A patent/CN108231441B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2144344Y (en) * | 1993-02-02 | 1993-10-20 | 李拴亮 | Contact of electrical switch |
| US6486423B1 (en) * | 2000-06-07 | 2002-11-26 | Methode Electronics, Inc. | Sliding contact mechanism |
| CN101409159A (en) * | 2007-10-12 | 2009-04-15 | 西门子公司 | Contact device with different contact forces in different operating states |
| CN103140910A (en) * | 2011-05-19 | 2013-06-05 | 富士电机株式会社 | Contact mechanism and electromagnetic contactor using same |
| CN102891040A (en) * | 2011-07-18 | 2013-01-23 | 安电株式会社 | Relay |
| CN102522266A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Double-breakpoint contactor contact structure adopting flexible coupling device |
| CN102522267A (en) * | 2011-12-09 | 2012-06-27 | 沈阳工业大学 | Low pressure contactor sliding contact structure employing contact pressure automatic adjustment |
| CN104025238A (en) * | 2011-12-21 | 2014-09-03 | 西门子公司 | Contactor |
| CN103187210A (en) * | 2011-12-30 | 2013-07-03 | Ls产电株式会社 | Dc power relay |
| CN103247499A (en) * | 2012-02-03 | 2013-08-14 | Abb公司 | Hybrid current switching device |
| CN104221115A (en) * | 2012-04-13 | 2014-12-17 | 富士电机机器制御株式会社 | Contact device and electromagnetic switch using same |
| CN105531783A (en) * | 2013-08-29 | 2016-04-27 | 松下知识产权经营株式会社 | Contact apparatus |
| CN104916499A (en) * | 2014-03-14 | 2015-09-16 | 欧姆龙株式会社 | Electromagnetic relay |
| CN205723342U (en) * | 2016-05-04 | 2016-11-23 | 浙江正泰电器股份有限公司 | Relay |
| CN206401190U (en) * | 2016-11-17 | 2017-08-11 | 武汉长海电气科技开发有限公司 | The structure of contact terminal and disconnecting switch of grafting form |
| CN206758290U (en) * | 2017-04-14 | 2017-12-15 | 施耐德电器工业公司 | Electrical contact device |
| CN208061879U (en) * | 2018-03-12 | 2018-11-06 | 西安开天铁路电气股份有限公司 | A kind of contact mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108231441A (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108231441B (en) | Contact structure | |
| CN101763998A (en) | Integrated contact arc extinguishing system with movable fixed contact | |
| CN202076169U (en) | Micro-switch | |
| CN208061879U (en) | A kind of contact mechanism | |
| CN201590377U (en) | Magnetic microswitch | |
| CN208045411U (en) | A kind of high-voltage DC contactor | |
| CN204809158U (en) | Bridge type double break point DC electromagnetic contactor | |
| CN207542152U (en) | A kind of high-voltage relay of resistance to transient high-current impact | |
| CN102522267B (en) | Low pressure contactor sliding contact structure employing contact pressure automatic adjustment | |
| CN207852554U (en) | A kind of rotary separation switch and its moving contact component, arc-striking module, limitation arc path module | |
| CN107026044A (en) | A kind of lever micro limit switch | |
| CN208433350U (en) | Single-break direct-acting contactor | |
| CN207303016U (en) | A kind of miniature circuit breaker of strong breaking capacity | |
| CN107706055B (en) | High-voltage relay resistant to instantaneous large current impact | |
| CN107887219B (en) | Switch with electromagnetic control | |
| US11694856B2 (en) | High voltage relay resistant to instantaneous high-current impact | |
| CN109545586B (en) | Contact structure | |
| CN202585273U (en) | Relay | |
| CN202183348U (en) | Movable contact assembly and contact system of electricity leakage protection switch | |
| CN108417450A (en) | Single-break direct-acting contactor | |
| CN107393780A (en) | A kind of miniature circuit breaker of strong breaking capacity | |
| CN209374284U (en) | Structure of contact terminal | |
| CN109192627B (en) | Control and protection switch electric appliance | |
| CN209981114U (en) | Medium-voltage direct current contactor | |
| CN209747353U (en) | electrical appliance assembly |
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 |