CN220253065U - Switching device - Google Patents

Abstract

The utility model provides a switching device, includes switch casing, sets up the electromagnetic system in switch casing, and electromagnetic system includes solenoid, quiet iron core and moving core, switch casing is including electromagnetic installation cavity and at least one contact module installation cavity that set up side by side, and electromagnetic installation intracavity is equipped with electromagnetic system, contact module installation intracavity is equipped with the contact module, the contact module includes contact module casing and the quiet contact, moving contact and the explosion chamber of setting in contact module casing, and the moving core passes through the linkage and is connected with the moving contact in order to drive moving contact rectilinear movement, is equipped with first linkage hole on contact module casing, and the linkage passes first linkage hole and is connected with moving contact, and contact mechanism encapsulates into after the contact module, whole installation is in the switch casing again, reduces the overall height of switch, reduces the influence of the electric arc that the contact module produced to electromagnetic system moreover, can be used to higher rated current.

Description

Switching device

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a switching device.

Background

The existing direct current switch suitable for the new energy automobile is high in overall installation height and not suitable for the new energy automobile with limited installation space; in addition, the contact mechanism is directly arranged in the switch shell, the assembly and the replacement are complex, and because the electric arc generated by the contact mechanism easily affects the electromagnetic system, the higher rated current has larger influence, so that the contact mechanism is difficult to be installed close to the electromagnetic system, and the requirements of small height and higher rated current of a new energy automobile are met.

Disclosure of Invention

The object of the present utility model is to overcome at least one of the drawbacks of the prior art and to provide a switching device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a switching device, includes the switch casing, sets up the electromagnetic system in the switch casing, and electromagnetic system includes solenoid, quiet iron core and moves the iron core, solenoid is used for producing electromagnetic force in order to drive to move the iron core to quiet iron core direction, the switch casing is including electromagnetic installation cavity and at least one contact module installation cavity that set up side by side, and electromagnetic installation intracavity is equipped with electromagnetic system, contact module installation intracavity is equipped with the contact module, the contact module includes contact module casing and the stationary contact, moving contact and the explosion chamber of setting in contact module casing, and the moving iron core is connected with the moving contact through the linkage and is equipped with first linkage hole on contact module casing, and the linkage passes first linkage hole and is connected moving iron core and moving contact.

Preferably, two contact module installation cavities are arranged in the switch shell, the two contact module installation cavities are respectively positioned at two sides of the electromagnetic installation cavity, the two contact modules are arranged in the two contact module installation cavities, and a movable iron core of the electromagnetic system is connected with movable contacts of the two contact modules through a linkage piece.

Preferably, two fixed contacts, a moving contact and two arc extinguishing chambers are arranged in the contact module shell, the moving contact comprises a contact arranged on a contact support, the fixed contact is provided with a first contact part, two ends of the contact are provided with second contact parts, and the contact support can move linearly to drive the two second contact parts of the contact to contact or separate from the first contact parts of the two fixed contacts.

Preferably, the two fixed contacts are arranged on two sides of the contact support, the two arc extinguishing chambers are symmetrically arranged on two sides of the two fixed contacts, and the two fixed contacts are respectively positioned between the corresponding arc extinguishing chambers and the contact support.

Preferably, two groups of permanent magnets and two groups of magnetic conduction plates are further arranged in the switch shell, the two groups of permanent magnets are respectively arranged corresponding to the two fixed contacts and the two arc extinguishing chambers, and a group of magnetic conduction plates are arranged on the outer side of each group of permanent magnets.

Preferably, each group of permanent magnets comprises a first permanent magnet and a second permanent magnet which are arranged at intervals in parallel, at least a corresponding arc extinguishing chamber, a first contact part of a fixed contact and a second contact part of a moving contact are arranged in an area between the first permanent magnet and the second permanent magnet, each magnetic conduction plate comprises a first magnetic conduction plate, a second magnetic conduction plate and a connecting plate, the first magnetic conduction plates and the second magnetic conduction plates are arranged in parallel, the connecting plates are connected to the first magnetic conduction plates and the second magnetic conduction plates, and the first magnetic conduction plates and the second magnetic conduction plates are respectively arranged outside the first permanent magnet and the second permanent magnet correspondingly.

Preferably, a first outside groove for mounting the permanent magnet is provided on the outside of the contact module housing.

Preferably, the first outer groove is used for mounting the magnetic conductive plate at the same time.

Preferably, the fixed contact is provided with a first arc striking part, and the first arc striking part is connected with the first contact part and extends to one side of the corresponding arc extinguishing chamber in the direction of the corresponding arc extinguishing chamber; and a third arc striking part is arranged on the contact, and is connected with the second contact part and extends towards the direction of the corresponding arc extinguishing chamber.

Preferably, the two fixed contacts are positioned on the same side of the moving contact, an arc-stop plate and an arc-stop plate spring are arranged in the contact module shell, the arc-stop plate is arranged between the two fixed contacts and used for separating two breakpoint electric arcs, the arc-stop plate spring is connected with the arc-stop plate and used for driving the arc-stop plate to move towards the moving contact, and when the moving contact moves towards the two fixed contacts to be closed, the arc-stop plate can be pushed and compressed.

Preferably, a limit boss is arranged in the contact module shell, the limit boss is provided with a chute and a spring groove, the arc-stop plate is linearly and slidably arranged in the chute, the arc-stop plate spring is arranged in the spring groove, the spring groove is communicated with the chute, and the arc-stop plate extends into the spring groove to be connected with the arc-stop plate spring.

Preferably, the limiting boss is located between the two fixed contacts, and fixed contact mounting grooves for limiting the two fixed contacts are formed in two sides of the limiting boss.

Preferably, the fixed contacts are provided with first avoidance holes, and the second contact parts at two ends of the contact respectively penetrate through the first avoidance holes of the two fixed contacts to be matched with the first contact parts of the corresponding fixed contacts.

Preferably, the static contact comprises a first contact part, a first connecting part and a first wiring part, wherein the first contact part, the first connecting part and the first wiring part are sequentially connected into a C-shaped structure, the first contact part and the first wiring part are oppositely arranged at intervals, two ends of the first connecting part are respectively connected with one ends of the first contact part and the first wiring part, openings of the C-shaped structures of the two static contacts are oppositely arranged, and the openings face towards the corresponding arc extinguishing chambers; the first connecting part is provided with a first avoidance hole, and the second contact parts at the two ends of the contact respectively penetrate through the first avoidance holes of the two fixed contacts to be matched with the first contact parts of the corresponding fixed contacts.

Preferably, the contact support is provided with a baffle, and the baffle is always positioned between the first contact parts of the two fixed contacts in the process of linear movement of the contact support.

Preferably, the first connection part of the stationary contact extends out of the contact module housing and out of the switch housing as a power connection part of the switching device.

Preferably, the switch housing comprises a first housing and a second housing, and the first housing and the second housing are oppositely arranged along the height direction of the switch device to form the switch housing; a contact module mounting cavity, an electromagnetic mounting cavity and a contact module mounting cavity are sequentially arranged in the first shell and the second shell along the width direction.

Preferably, the top side of the switch shell is provided with a cross-shaped protruding structure, four wiring grooves are formed at four terminal pins of the top side of the switch shell, and wiring holes for extending out of the power supply wiring parts are formed in the wiring grooves.

The switch device provided by the utility model is characterized in that the switch shell is internally provided with the contact module shell for packaging the contact mechanism, and the contact module shell packages the fixed contact, the moving contact and the arc extinguishing chamber into the contact module and then is integrally arranged in the switch shell, so that the contact module can be arranged side by side with an electromagnetic system, the overall height of the switch is reduced, the influence of an electric arc generated by the contact module on the electromagnetic system is reduced, the switch device can be used for higher rated current, and the service life of a product is prolonged.

In addition, the outside of contact module casing still is equipped with first outside groove, can be used for installing permanent magnet and magnetic conduction board, improves arc extinguishing efficiency.

In addition, be equipped with first striking portion on the static contact, be equipped with third striking portion on the contact, can guide the arc more quick removal to the explosion chamber, improve arc extinguishing efficiency.

In addition, the C-shaped structure of the static contact and the structure that the contact passes through the first avoidance hole are beneficial to lifting the arc striking effect and lifting the opening distance of the first contact part and the second contact part after the brake is separated.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a switching device;

FIG. 2 is a schematic side view of an embodiment of a switchgear;

fig. 3 is a schematic view of the overall structure of the contact module of the first embodiment;

fig. 4 is a cross-sectional view of the contact module of the first embodiment;

fig. 5 is an exploded view of the contact module of the first embodiment;

fig. 6 is a schematic view of the overall structure of a contact module of the second embodiment;

fig. 7 is a cross-sectional view of a contact module of embodiment two;

fig. 8 is an exploded view of the contact module of the second embodiment.

The elements in the figures are numbered as follows:

the contact module 10, the first linking hole 101, the module exhaust port 102, the power supply wiring portion 103, the stationary contact 11, the first contact portion 111, the first wiring portion 113, the first striking portion 114, the moving contact 12, the contact 120, the second contact portion 121, the third striking portion 122, the contact support 124, the shutter 1243, the connection hole 1245, the contact spring 126, the arc extinguishing chamber 14, the arc-baffle spring 15, the arc-baffle 16, the magnetic conductive plate 17, the first magnetic conductive plate 171, the second magnetic conductive plate 173, the connection plate 172, the permanent magnet 18, the first permanent magnet 18A, the second permanent magnet 18B, the electromagnetic coil 21, the moving iron core 22, the stationary iron core 23, the return spring 24, the link 25, the contact module case 30, the first module case 30A, the second module case 30B, the limit boss 31, the chute 32, the spring groove 33, the stationary contact mounting groove 34, the first outer side groove 35, the switch case 40, the first case 40A, the second case 40B, the wiring hole 401, the exhaust hole 402, the control wiring groove 403.

Detailed Description

The following examples are given in connection with the accompanying drawings to further illustrate specific embodiments of the switching device according to the utility model. The switching device of the present utility model is not limited to the description of the following embodiments.

1-4, the switching device includes a contact mechanism and an electromagnetic mechanism; the electromagnetic mechanism comprises an electromagnetic coil 21, a static iron core 23, a movable iron core 22 and a return spring 24, wherein the electromagnetic coil 21 is used for generating electromagnetic force to drive the movable iron core 22 to move towards the static iron core 23, and the return spring 24 acts on the movable iron core 22; when the electromagnetic coil 21 is in conductive operation, electromagnetic force is generated to drive the movable iron core 22 to move and attract towards the static iron core 23, the movable iron core 22 enables the return spring 24 to store energy, and when the electromagnetic coil 21 stops operating, the movable iron core 22 is pushed to move away from the static iron core 23 in the process of restoring deformation of the return spring 24. The contact mechanism comprises a fixed contact 11 and a movable contact 12, a movable iron core 22 of the electromagnetic mechanism can drive the movable contact 12 to move, so that the movable contact 12 is contacted with and separated from the fixed contact 11, and the contact mechanism is used for realizing switching on and switching off of a switching device, which is the prior art in the field.

As shown in fig. 1-4, in one embodiment of the switch device of the present utility model, the switch device of the present embodiment is a dc switch, the switch device includes a switch housing 40, and an electromagnetic system and a contact module 10 disposed in the switch housing 40, where the electromagnetic system and the contact module 10 are disposed side by side along a width direction of the switch device, the electromagnetic system includes an electromagnetic coil 21, a fixed iron core 23, and a movable iron core 22, the switch housing 40 includes an electromagnetic mounting cavity and at least one contact module mounting cavity disposed side by side, the electromagnetic system is disposed in the electromagnetic mounting cavity, the contact module mounting cavity is provided with the contact module 10, the contact module 10 includes a contact module housing 30, and a fixed contact 11, a movable contact 12, and an arc extinguishing chamber 14 disposed in the contact module housing 30, the movable iron core 22 is connected with the movable contact 12 through a linkage member 25 to drive the movable contact 12 to move linearly, a first linkage hole 101 is disposed on the contact module housing 30, and the linkage member 25 passes through the first linkage hole 101 to connect the movable iron core 22 with the movable contact 12.

In the switch device of this embodiment, the contact module housing 30 for packaging the contact mechanism is further disposed in the switch housing 40, and after the static contact 11, the moving contact 12 and the arc extinguishing chamber 14 are packaged into the contact module by the contact module housing 30, the contact module is integrally mounted in the switch housing 40, so that the contact module can be mounted side by side with the electromagnetic system, the overall height of the switch is reduced, the influence of the electric arc generated by the contact module on the electromagnetic system is reduced, the switch device can be used for higher rated current, and the service life of the switch device is prolonged.

As shown in fig. 1, the switch device of this embodiment includes two contact modules 10, two contact module mounting cavities are disposed in the switch housing 40, the two contact module mounting cavities are located at the left and right sides of the electromagnetic mounting cavity, the two contact modules 10 are disposed in the two contact module mounting cavities, and the moving iron core 22 of the electromagnetic system is connected with the moving contacts 12 of the two contact modules 10 through the linkage member 25, so as to balance the driving force of the moving iron core 22. It should be noted that two contact modules 10 may be disposed on the same side of the electromagnetic system, and the movable contacts 12 of adjacent contact modules 10 may be connected by the link member 25, and in addition, the switching device may be provided with only one contact module 10, or three or more contact modules 10, as required.

As shown in fig. 1, the switch housing 40 of the present embodiment includes a first housing 40A, a second housing 40B, and the first housing 40A and the second housing 40B are mounted opposite to each other in the height direction of the switch device to form the switch housing 40. A contact module mounting cavity, an electromagnetic mounting cavity and a contact module mounting cavity are sequentially arranged in the first shell 40A and the second shell 40B along the width direction, and partition structures such as a partition plate and/or a partition rib can be arranged between the contact module mounting cavity and the electromagnetic mounting cavity; corresponding positioning blocks are arranged in the electromagnetic mounting cavity to fix the static iron core 23 and/or the electromagnetic coil 21, and a guiding mechanism is arranged to provide guiding for the linear movement of the movable iron core 22.

As shown in fig. 1, the contact module housing 30 includes a first module housing 30A and a second module housing 30B, the first module housing 30A and the second module housing 30B are installed opposite to each other along the width direction of the switchgear to form the contact module housing 30, the two stationary contacts 11, the moving contacts 12 and the two arc extinguishing chambers 14 are installed between the first module housing 30A and the second module housing 30B, a first installation space in which the contact mechanism is disposed is formed between the first module housing 30A and the second module housing 30B, and the contact module is connected as a whole by means of screws, rivets, buckles, or the like, and then is integrally installed between the first housing 40A and the second housing 40B. A first linking hole 101 through which the linking member 25 passes is provided in a side wall in the width direction of the contact module case 30, and a module exhaust port 102 is provided in a side wall in the length direction of the contact module case 30, and the module exhaust port 102 corresponds to an exhaust end of the arc extinguishing chamber 14 of the contact module 10, and is used for exhausting arc gas.

A wiring hole 401 is provided in the switch housing 40 for the power supply wiring portion 103 to protrude to connect a power supply and a load. Preferably, the wiring hole 401 and the power supply wiring portion 103 are provided at the top side of the switch housing 40, that is, the top side of the first housing 40A, to facilitate wiring. Preferably, the top side of the switch shell 40 is provided with a cross-shaped protruding structure, four wiring grooves are formed at four end feet of the top side of the switch shell 40, and wiring holes 401 for extending out of the power supply wiring part 103 are formed in the wiring grooves; the cross-shaped protruding structure plays a role in increasing the creepage distance. Preferably, the side wall of the switch housing 40 is further provided with an exhaust hole 402 and a control wiring slot 403; the exhaust hole 402 corresponds to the module exhaust hole 102 and is used for exhausting arc gas; the control wiring groove 403 is used for installing and connecting a control wiring part of the electromagnetic system, and the control wiring part is used for supplying power to the electromagnetic coil 21 and driving the movable iron core 22 to act.

As shown in fig. 3-5, in the first embodiment of the contact module 10, the contact module 10 of this embodiment includes one moving contact 12, two fixed contacts 11 and two arc extinguishing chambers 14, the fixed contacts 11 are provided with first contact portions 111, the moving contact 12 includes contacts 120 mounted on contact supports 124, two ends of the contacts 120 are provided with second contact portions 121, and the two second contact portions 121 are used for being matched with the two fixed contacts 11. The moving iron core 22 of the electromagnetic system can drive the contact support 124 to move linearly, so that the two second contact parts 121 of the contact 120 are contacted with and separated from the first contact parts 111 of the two fixed contacts 11, the moving iron core is used for realizing switching on and switching off of the switching device, and the arc extinguishing chamber 14 is used for extinguishing an arc generated when the moving contact 12 is switched off from the fixed contacts 11. The moving contact 12 includes a contact 120, a contact support 124, and a contact spring 126, where the contact support 124 can move linearly in the height direction of the switching device in the contact module housing 30, the contact 120 is mounted on the contact support 124, and the contact spring 126 is disposed between the contact 120 and the contact support 124, and is used to fix the contact 120 on the contact support 124 and implement over travel, so as to ensure reliable contact between the second contact portion 121 and the fixed contact 11. The two fixed contacts 11 are symmetrically arranged at two sides of the contact support 124, the two arc extinguishing chambers 14 are arranged at two sides of the moving contact 12, namely symmetrically arranged at two sides of the contact 120 and the contact support 124, and the two arc extinguishing chambers 14 are respectively arranged at two sides far away from the contact area of the moving contact 12 and the two fixed contacts 11 and symmetrically distributed. Preferably, the two arc extinguishing chambers 14 are symmetrically arranged at two sides of the two fixed contacts 11, and the two fixed contacts 11 are respectively positioned between the corresponding arc extinguishing chambers 14 and the contact support 124.

Preferably, as shown in fig. 4 to 5, the stationary contact 11 includes a first contact portion 111, a first connection portion 112, and a first connection portion 113, the first contact portion 111 is configured to mate with a second contact portion 121 of the contact 120, the first connection portion 113 is configured to connect to a power source, and the first connection portion 112 is connected between the first contact portion 111 and the first connection portion 113. In this embodiment, the first contact portion 111, the first connection portion 112 and the first connection portion 113 are sequentially connected into a C-shaped structure, two ends of the first connection portion 112 are respectively connected with one ends of the first contact portion 111 and the first connection portion 113, a stationary contact is disposed on the first contact portion 111, and a first connection hole is disposed on the first connection portion 113. The openings of the C-shaped structures of the two fixed contacts 11 are arranged in opposite directions, and the openings face the corresponding arc extinguishing chambers 14.

Preferably, the fixed contact 11 is integrally formed by bending a conductive plate, and the first connection portion 113 extends out of the contact module housing 30 and extends out of the switch housing 40 to serve as a power connection portion 103 of the switching device for connecting a voltage and a load. In addition, the power connection part 103 may be further connected with a connection terminal, which is used for electrically connecting the contact module with an external circuit, and the connection terminal may be in various types.

Preferably, the fixed contact 11 is provided with a first arc striking part 114, and the first arc striking part 114 is connected with the first contact part 111 and extends to one side of the corresponding arc extinguishing chamber 14 in the direction of the corresponding arc extinguishing chamber 14; the contact 120 is provided with a third striking part 122, and the third striking part 122 is connected with the second contact part 121 and extends in the direction corresponding to the arc extinguishing chamber 14, so that the electric arc can be guided to move into the arc extinguishing chamber 14 more quickly, and the arc extinguishing efficiency is improved.

In this embodiment, the two fixed contacts 11 are located at the same side of the moving contact 12, and an arc-barrier 16 and an arc-barrier spring 15 are disposed in the contact module housing 30, where the arc-barrier 16 is disposed between the two fixed contacts 11 and is used to separate two breakpoint arcs, and the arc-barrier spring 15 is connected with the arc-barrier 16 and is used to drive the arc-barrier 16 to move toward the moving contact 12, and when the moving contact 12 moves toward the two fixed contacts 11 to switch on, the arc-barrier 16 can be pushed and the arc-barrier spring 15 can be compressed. By arranging the movable arc-shielding plate 16 between the two fixed contacts 11 and driving the arc-shielding plate 6 to move through the cooperation of the arc-shielding plate springs 15 and the movable contacts 12, arcs on two sides are isolated through the arc-shielding plate 6, and the movable contact 3 and the fixed contact 2 are reduced from being ablated and damaged by the arcs.

Preferably, a limit boss 31 is arranged in the middle of the contact module shell 30, the limit boss 31 is positioned between two fixed contacts 11, the limit boss 31 is provided with a chute 32 and a spring groove 33, the arc-shaped baffle 16 is linearly and slidably arranged in the chute 32, the arc-shaped baffle spring 15 is arranged in the spring groove 33, the spring groove 33 is communicated with the chute 32, and the arc-shaped baffle 16 extends into the spring groove 33 to be connected with the arc-shaped baffle spring 15. The two sides of the limiting boss 31 are provided with fixed contact mounting grooves 34 for limiting the two fixed contacts 11. The contact support 124 corresponds to the limit boss 31, a connecting hole 1245 connected with the linkage piece 25 is formed in the contact support 124, the contact support 124 can move towards the direction close to the limit boss 31 and away from the limit boss 31 under the drive of the linkage piece 25 so as to realize switching on and off, the arc-shaped plate 16 can be driven and the arc-shaped plate spring 15 can be compressed when the contact support moves towards the limit boss 31, and the arc-shaped plate spring 15 can release energy to drive the arc-shaped plate 16 to move towards the direction close to the contact support 124 when the contact support moves away from the limit boss 31.

As shown in fig. 3 and 5, preferably, two groups of permanent magnets 18 and two groups of magnetic conductive plates 17 are further arranged in the switch shell 40, the two groups of permanent magnets 18 are respectively arranged corresponding to the two fixed contacts 11 and the two arc-extinguishing chambers 14, and a group of magnetic conductive plates 17 are arranged on the outer side of each group of permanent magnets 18, so that the electric arc is driven to the direction of the arc-extinguishing chamber 14 by using a magnetic field, and the electric arc is accelerated to enter the arc-extinguishing chamber 14. Preferably, the permanent magnet 18 and the magnetic conductive plate 17 are disposed between the contact module housing 30 and the switch housing 40. The permanent magnet 18 is disposed outside the first module case 30A and the second module case 30B, and the magnetic conductive plate 17 is disposed outside the permanent magnet 18. A first outside groove 35 for mounting the permanent magnet 18 is provided on the outside of the contact module housing 30. Further, the first outer side groove 35 is used for mounting the magnetic conductive plate 17 at the same time, and the first magnetic conductive plate 171 and the second magnetic conductive plate 173 are matched in shape with the first permanent magnet 18A and the second permanent magnet 18B, and are mounted in the first outer side groove 35.

Preferably, each group of permanent magnets 18 comprises a first permanent magnet 18A and a second permanent magnet 18B which are arranged at intervals in parallel, at least an arc extinguishing chamber 14, a first contact part 111 of a fixed contact 11 and a second contact part 121 of a moving contact 12 are arranged in a region between the first permanent magnet 18A and the second permanent magnet 18B, the magnetic conduction plate 17 comprises a first magnetic conduction plate 171, a second magnetic conduction plate 173 and a connecting plate 172, the first magnetic conduction plate 171 and the second magnetic conduction plate 173 are arranged in parallel, and the connecting plate 172 is connected to the first magnetic conduction plate 171 and the second magnetic conduction plate 173, so that the magnetic conduction plate 17 is U-shaped. The first magnetic conductive plate 171 and the second magnetic conductive plate 173 are respectively disposed on the outer sides of the first permanent magnet 18A and the second permanent magnet 18B, and the connection plate 172 is disposed on the lower side of the arc extinguishing chamber 14, so as to avoid the exhaust end of the arc extinguishing chamber 14.

As shown in fig. 6 to 8, in the second embodiment of the contact module 10, the contact module 10 of the present embodiment includes a contact module housing 30, and one moving contact 12, two fixed contacts 11, and two arc extinguishing chambers 14 provided in the contact module housing 30. One difference between the present embodiment and the contact module 10 of the first embodiment is the structure of the stationary contact 11. The fixed contacts 11 of the contact module 10 in this embodiment are provided with first avoidance holes, and the second contact portions 121 at two ends of the contact 120 respectively pass through the first avoidance holes of the two fixed contacts 11 to be matched with the first contact portions 111 of the corresponding fixed contacts 11.

Specifically, the stationary contact 11 includes a first contact portion 111, a first connection portion 112, and a first connection portion 113, where the first contact portion 111, the first connection portion 112, and the first connection portion 113 are sequentially connected to form a C-shaped structure, the first contact portion 111 and the first connection portion 113 are disposed opposite to each other at intervals, two ends of the first connection portion 112 are respectively connected to one ends of the first contact portion 111 and the first connection portion 113, openings of the C-shaped structures of the two stationary contacts 11 are disposed opposite to each other, and the openings face the arc extinguishing chambers 14 corresponding to each other; the first connection portion 112 is provided with a first avoidance hole, the second contact portions 121 at two ends of the contact 120 respectively penetrate through the first avoidance holes of the two fixed contacts 11 to be matched with the first contact portions 111 of the corresponding fixed contacts 11, and the second contact portions 121 of the contact 120 penetrate through the first avoidance holes to be arranged between the first wiring portion 113 and the first contact portions 111. The C-shaped structure of the fixed contact 11 and the structure that the contact 120 passes through the first avoidance hole are beneficial to lifting the arc striking effect and lifting the opening distance of the first contact part 111 and the second contact part 121 after opening the gate.

Preferably, the contact support 124 of the present embodiment is provided with a baffle 1243, and during the rectilinear movement of the contact support 124, whether the contact support 124 is switched on or off, the baffle 1243 is always located between the first contact portions 111 of the two fixed contacts 11, so as to isolate the arcs on both sides, and reduce the erosion and other damages of the moving contact 3 and the fixed contact 2 caused by the arcs. The baffles 1243 are integrally formed with the contact support 124.

Preferably, the contact module housing 30 of the present embodiment is provided with first inner housing holes 304 on two sidewalls perpendicular to the moving direction of the contact support 124, respectively, and the contact support 124 can extend from the first inner housing holes 304 to increase the moving stroke thereof, so as to enlarge the opening distance between the moving contact and the static contact. Preferably, the linkage 25 for driving the movement of the contact support 124 is capable of being connected to the contact support 124 protruding from the first inner housing aperture 304; that is, the first inner housing hole 304 also functions as the first linkage hole 101, but as other embodiments, a first linkage hole 101 may be provided on a side wall of the contact module housing 30 parallel to the moving direction of the contact support 124.

The contact module 10 of the present embodiment is also provided with the permanent magnet 18 and the magnetic conductive plate 17, and the structures of the corresponding first striking portion 114 and third striking portion 122, and the description will not be repeated.

It should be noted that, in the description of the present utility model, the terms "upper," "lower," "left," "right," "inner," "outer," and the like refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in use, merely for convenience of description, and do not refer to the fact that the apparatus or element referred to must have a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments disclosed herein. It should be understood that those skilled in the art to which the present utility model pertains may make several simple deductions or substitutions without departing from the inventive concept, and should be considered as falling within the scope of the present utility model.

Claims (18)

1. The utility model provides a switching device, includes switch casing (40), sets up the electromagnetic system in switch casing (40), and electromagnetic system includes solenoid (21), quiet iron core (23) and moves iron core (22), solenoid (21) are used for producing electromagnetic force in order to drive to move iron core (22) to quiet iron core (23) direction, its characterized in that: switch casing (40) are including electromagnetic installation cavity and at least one contact module installation cavity that set up side by side, and electromagnetic installation intracavity is equipped with electromagnetic system, be equipped with contact module (10) in the contact module installation cavity, contact module (10) are including contact module casing (30) and static contact (11), moving contact (12) and explosion chamber (14) of setting in contact module casing (30), and moving core (22) are connected with moving contact (12) through moving part (25) in order to drive moving contact (12) rectilinear movement, are equipped with first linkage hole (101) on contact module casing (30), and moving part (25) pass first linkage hole (101) and are connected moving core (22) and moving contact (12).

2. The switching device of claim 1, wherein: two contact module installation cavities are arranged in the switch shell (40), the two contact module installation cavities are respectively located at two sides of the electromagnetic installation cavity, the two contact modules (10) are arranged in the two contact module installation cavities, and a movable iron core (22) of the electromagnetic system is connected with movable contacts (12) of the two contact modules (10) through a linkage piece (25).

3. The switching device of claim 1, wherein: be equipped with two stationary contacts (11), moving contact (12) and two explosion chambers (14) in contact module casing (30), moving contact (12) are including installing contact (120) on contact support (124), and stationary contact (11) are equipped with first contact portion (111), and the both ends of contact (120) are equipped with second contact portion (121), and contact support (124) can rectilinear movement drive two second contact portions (121) and the first contact portion (111) contact or the separation of two stationary contacts (11) of contact (120).

4. A switching device according to claim 3, characterized in that: the two fixed contacts (11) are arranged on two sides of the contact support (124), the two arc extinguishing chambers (14) are symmetrically arranged on two sides of the two fixed contacts (11), and the two fixed contacts (11) are respectively arranged between the corresponding arc extinguishing chambers (14) and the contact support (124).

5. A switching device according to claim 3, characterized in that: two groups of permanent magnets (18) and two groups of magnetic conduction plates (17) are further arranged in the switch shell (40), the two groups of permanent magnets (18) are respectively corresponding to the two fixed contacts (11) and the two arc extinguishing chambers (14), and a group of magnetic conduction plates (17) are arranged on the outer side of each group of permanent magnets (18).

6. The switching device of claim 5, wherein: each group of permanent magnets (18) comprises a first permanent magnet (18A) and a second permanent magnet (18B) which are arranged at intervals in parallel, at least a corresponding arc extinguishing chamber (14), a first contact part (111) of a fixed contact (11) and a second contact part (121) of a moving contact (12) are arranged in an area between the first permanent magnet (18A) and the second permanent magnet (18B), each magnetic conduction plate (17) comprises a first magnetic conduction plate (171), a second magnetic conduction plate (173) and a connecting plate (172), the first magnetic conduction plates (171) and the second magnetic conduction plates (173) are arranged in parallel, the connecting plates (172) are connected to the first magnetic conduction plates (171) and the second magnetic conduction plates (173), and the first magnetic conduction plates (171) and the second magnetic conduction plates (173) are respectively arranged outside the first permanent magnet (18A) and the second permanent magnet (18B) correspondingly.

7. The switching device of claim 1, wherein: a first outside groove (35) for mounting the permanent magnet (18) is provided on the outside of the contact module case (30).

8. The switching device of claim 6, wherein: the first outside groove (35) is used for installing the magnetic conduction plate (17) at the same time.

9. A switching device according to claim 3, characterized in that: the static contact (11) is provided with a first arc striking part (114), and the first arc striking part (114) is connected with the first contact part (111) and extends to one side of the corresponding arc extinguishing chamber (14) in the direction of the corresponding arc extinguishing chamber (14); the contact (120) is provided with a third striking part (122), and the third striking part (122) is connected with the second contact part (121) and extends towards the direction corresponding to the arc extinguishing chamber (14).

10. A switching device according to claim 3, characterized in that: the two fixed contacts (11) are positioned on the same side of the moving contact (12), an arc-barrier plate (16) and an arc-barrier plate spring (15) are arranged in the contact module shell (30), the arc-barrier plate (16) is arranged between the two fixed contacts (11) and used for separating two breakpoint arcs, the arc-barrier plate spring (15) is connected with the arc-barrier plate (16) and used for driving the arc-barrier plate (16) to move towards the moving contact (12), and when the moving contact (12) moves towards the two fixed contacts (11) to switch on, the arc-barrier plate (16) can be pushed and the arc-barrier plate spring (15) can be compressed.

11. The switching device of claim 10, wherein: be equipped with spacing boss (31) in contact module casing (30), spacing boss (31) are equipped with spout (32) and spring groove (33), and flash barrier (16) straight line slidable mounting is in spout (32), and flash barrier spring (15) are installed in spring groove (33), and spring groove (33) and spout (32) intercommunication, flash barrier (16) stretch into in spring groove (33) and are connected with flash barrier spring (15).

12. The switching device of claim 11, wherein: the limiting boss (31) is located between the two fixed contacts (11), and fixed contact mounting grooves (34) used for limiting the two fixed contacts (11) are formed in two sides of the limiting boss (31).

13. A switching device according to claim 3, characterized in that: the static contacts (11) are provided with first avoidance holes, and second contact parts (121) at two ends of each contact (120) respectively penetrate through the first avoidance holes of the two static contacts (11) to be matched with the first contact parts (111) of the corresponding static contacts (11).

14. The switching device of claim 13, wherein: the static contact (11) comprises a first contact part (111), a first connecting part (112) and a first wiring part (113), wherein the first contact part (111), the first connecting part (112) and the first wiring part (113) are sequentially connected into a C-shaped structure, the first contact part (111) and the first wiring part (113) are oppositely arranged at intervals, two ends of the first connecting part (112) are respectively connected with one ends of the first contact part (111) and the first wiring part (113), openings of the C-shaped structures of the two static contacts (11) are arranged in opposite directions, and the openings face to the corresponding arc extinguishing chambers (14); the first connecting part (112) is provided with a first avoiding hole, and the second contact parts (121) at two ends of the contact (120) respectively penetrate through the first avoiding holes of the two fixed contacts (11) to be matched with the first contact parts (111) of the corresponding fixed contacts (11).

15. The switching device of claim 13, wherein: the contact support (124) is provided with a baffle plate (1243), and the baffle plate (1243) is always positioned between the first contact parts (111) of the two fixed contacts (11) in the process of linear movement of the contact support (124).

16. The switching device of claim 1, wherein: the first connection part (113) of the fixed contact (11) extends out of the contact module shell (30) and extends out of the switch shell (40) to serve as a power connection part (103) of the switch device.

17. The switching device of claim 1, wherein: the switch shell (40) comprises a first shell (40A) and a second shell (40B), and the first shell (40A) and the second shell (40B) are oppositely arranged along the height direction of the switch device to form the switch shell (40); a contact module mounting cavity, an electromagnetic mounting cavity and a contact module mounting cavity are sequentially arranged in the first shell (40A) and the second shell (40B) along the width direction.

18. The switching device of claim 17, wherein: the top side of the switch shell (40) is provided with a cross-shaped protruding structure, four wiring grooves are formed at four end feet of the top side of the switch shell (40), and wiring holes (401) for extending out of the power supply wiring part (103) are formed in the wiring grooves.