CN214203596U - Contact matching structure of electrical switch - Google Patents
Contact matching structure of electrical switch Download PDFInfo
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- CN214203596U CN214203596U CN202120173616.4U CN202120173616U CN214203596U CN 214203596 U CN214203596 U CN 214203596U CN 202120173616 U CN202120173616 U CN 202120173616U CN 214203596 U CN214203596 U CN 214203596U
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Abstract
The utility model relates to the technical field of electrical switches, in particular to a contact matching structure of an electrical switch, which comprises a left switch shell and a right switch shell, wherein the arc generated by the contact in the switching process is attracted from the left switch shell and the right switch shell through a magnetic arc striking rod, and is guided to one end of an arc extinguishing grid, and the residual arc in the switch moving contact is further attracted under the mutual connection between the switch moving contact and the other end of the arc extinguishing grid, so that the dissipation of the arc is accelerated, thereby solving the problems that the existing air switch is mutually connected with a fixed contact through the moving contact, the electrical switch controls the circuit operation, the arc is generated in the switching process of the electrical switch, the arc is accompanied by larger high temperature, the long-time arc is generated, the contact generates heat, the ablation is generated, the normal use of the air switch is seriously influenced, and the service life of the air switch is greatly reduced, thereby prolonging the service life of the device and further enhancing the practicability of the device.
Description
Technical Field
The utility model relates to an electrical switch technical field specifically is an electrical switch's contact cooperation structure.
Background
An air switch, also called an air circuit breaker, is a kind of circuit breaker, is a switch which can automatically break off as long as the current in the circuit exceeds the rated current, the air switch is an electric appliance which is very important in a low-voltage distribution network and an electric power dragging system, integrates control and a plurality of protection functions, can not only complete the contact and breaking of the circuit, but also protect the short circuit, serious overload, undervoltage and the like of the circuit or electric equipment, meanwhile, the air switch can be used for starting the motor infrequently, the existing air switch is connected with the fixed contact through the movable contact, so that the electric switch controls the circuit operation, the electric arc is generated in the on-off process of the electric switch, the electric arc is accompanied by larger high temperature, the contact is heated and ablated due to the long-time generation of the electric arc, the normal use of the air switch is seriously influenced, and the service life of the air switch is greatly reduced.
There is therefore a need for a contact mating arrangement for an electrical switch that ameliorates the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electrical switch's contact cooperation structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a contact matching structure of an electrical switch comprises a left switch shell and a right switch shell, wherein a movable control handle is arranged between the left switch shell and the right switch shell and on the front side of the left switch shell, an upper wiring terminal is arranged inside the left switch shell and on the end surface close to the left switch shell, a lower wiring terminal is arranged inside the left switch shell and on the bottom close to the left switch shell, a magnetic trip coil is arranged inside the left switch shell and behind the movable control handle, an arc-extinguishing bar is arranged inside the left switch shell and behind the magnetic trip coil, a magnetic arc-striking bar is connected to the bottom of the arc-extinguishing bar, the other end of the magnetic arc-striking bar extends between a movable switch contact and a fixed switch contact, a movable switch contact is connected to the bottom of the movable control handle, and a fixed switch contact is arranged below the movable switch contact and corresponds to the movable switch contact, the right side wall of the switch right shell is provided with a plurality of fixing bolts, and bolt fixing grooves are formed in the switch left shell and correspond to the fixing bolts.
Preferably, the switch left shell and the switch right shell are both made of polyethylene.
Preferably, the left switch shell is in threaded connection with the right switch shell through a bolt.
Preferably, the movable control handle is connected with the left switch shell in a rotating mode, and the movable control handle is connected with the right switch shell in a rotating mode.
Preferably, the upper connection terminal and the lower connection terminal are both electrically connected through a connection mode between a lead and a power supply.
Preferably, the movable contact of the switch is in sliding connection with the left shell of the switch through a movable control handle.
Preferably, the arc chute is made of galvanized iron, and the magnetic arc striking rod is made of galvanized iron.
Compared with the prior art, the beneficial effects of the utility model are that:
in the utility model, the magnetic arc striking rod is arranged to attract the electric arc generated by the contact in the switching-on and switching-off process and guide the electric arc to one end of the arc-extinguishing grid, and the residual electric arc in the switch moving contact is further attracted under the mutual connection of the switch moving contact and the other end of the arc extinguishing grid, so that the dissipation of the electric arc is accelerated, thereby solving the problems that the prior air switch is connected with a static contact through a moving contact to ensure that the electric switch controls the circuit operation, the electric arc is generated in the on-off process of the electric switch, the electric arc is accompanied by larger high temperature, the contact is heated and ablated after long-time generation of the electric arc, the normal use of the air switch is seriously influenced, and the service life of the air switch is greatly reduced, thereby prolonging the service life of the device, reducing the ablation of the contact and further enhancing the practicability of the device.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a right side view of the whole body of the present invention;
fig. 3 is an enlarged view of a portion a of the present invention.
In the figure: 1. opening and closing the left shell; 2. a switch right housing; 3. a movable control handle; 4. an upper wiring terminal; 5. a lower wiring terminal; 6. a magnetic release coil; 7. an arc chute; 8. a magnetic arc striking rod; 9. a switch moving contact; 10. a switch static contact; 11. fixing the bolt; 12. the bolt fixes the groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a contact matching structure of an electrical switch comprises a left switch shell 1 and a right switch shell 2, a movable control handle 3 is arranged between the left switch shell 1 and the right switch shell 2 and on the front side of the left switch shell 1, an upper connecting terminal 4 is arranged inside the left switch shell 1 and on the end surface close to the left switch shell 1, a lower connecting terminal 5 is arranged inside the left switch shell 1 and on the bottom close to the left switch shell 1, a magnetic trip coil 6 is arranged inside the left switch shell 1 and behind the movable control handle 3, an arc extinguishing grid 7 is arranged inside the left switch shell 1 and behind the magnetic trip coil 6, a magnetic arc striking rod 8 is connected to the bottom of the arc extinguishing grid 7, the other end of the magnetic arc striking rod 8 extends between a movable switch contact 9 and a fixed switch contact 10, and a movable switch contact 9 is connected to the bottom of the movable control handle 3, a switch static contact 10 is arranged below the switch moving contact 9 and corresponding to the switch moving contact 9, a plurality of fixing bolts 11 are arranged on the right side wall of the switch right shell 2, and bolt fixing grooves 12 are arranged in the switch left shell 1 and corresponding to the fixing bolts 11.
The utility model discloses work flow: when in use, the upper connecting terminal 4 and the lower connecting terminal 5 are both electrically connected with a power supply through a lead, the electrical switch is connected with the power supply to work, the movable control handle 3 is rotationally connected with the left switch shell 1, the movable control handle 3 is rotationally connected with the right switch shell 2, the movable control handle 3 is rotated, the switch moving contact 9 is driven to connect the switch moving contact 9 with the switch static contact 10 under the action of sliding connection between the movable control handle 3 and the left switch shell 1, the movable control handle 3 is rotated, the connection between the switch moving contact 9 and the switch static contact 10 is disconnected through the movable control handle 3 when necessary, electric arcs are generated between the switch moving contact 9 and the switch static contact 10, most of the electric arcs are attracted to the guide grid 7 by the magnetic arc striking rod 8 when the switch moving contact 9 passes through the magnetic arc striking rod 8, the electric arc is preliminarily differentiated into a plurality of tiny electric arcs, when the switch moving contact 9 stays to the tail end, the residual electric arc on the switch moving contact 9 is attracted by the arc extinguishing grid 7 for further arc extinguishing, and the extinction of the electric arc is accelerated, as shown in figure 1, the electric arc generated in the switching process of the contact is attracted from the arc extinguishing grid 7 and is guided to one end of the arc extinguishing grid 7 through the arranged magnetic arc striking rod 8, and the residual electric arc in the switch moving contact 9 is further attracted under the mutual connection and the leading of the other end of the switch moving contact 9 and the other end of the arc extinguishing grid 7, so that the dissipation of the electric arc is accelerated, the problem that the existing air switch is mutually connected with a fixed contact through a moving contact is solved, the electric switch further controls the circuit operation, the electric arc is generated in the switching process of the electric switch, the electric arc is accompanied with larger high temperature, and the generation of the electric arc for a long time can cause the contact to generate heat, the ablation is generated, the normal use of the air switch is seriously influenced, the service life of the air switch is greatly reduced, the service life of the device is prolonged, the ablation of a contact is reduced, and the practicability of the device is further enhanced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an electrical switch's contact cooperation structure, includes switch left side shell (1) and switch right side shell (2), its characterized in that: the switch is characterized in that a movable control handle (3) is arranged between a left switch shell (1) and a right switch shell (2) and on the front side of the left switch shell (1), an upper wiring terminal (4) is arranged inside the left switch shell (1) and on the end surface close to the left switch shell (1), a lower wiring terminal (5) is arranged inside the left switch shell (1) and on the bottom close to the left switch shell (1), a magnetic trip coil (6) is arranged inside the left switch shell (1) and behind the movable control handle (3), an arc extinguishing bar (7) is arranged inside the left switch shell (1) and behind the magnetic trip coil (6), a magnetic arc striking bar (8) is connected to the bottom of the arc extinguishing bar (7), and the other end of the magnetic arc striking bar (8) extends to a position between a switch moving contact (9) and a switch static contact (10), the bottom of the movable control handle (3) is connected with a switch moving contact (9), a switch static contact (10) is arranged below the switch moving contact (9) and corresponds to the switch moving contact (9), a plurality of fixing bolts (11) are arranged on the right side wall of the switch right shell (2), and bolt fixing grooves (12) are formed in the switch left shell (1) and correspond to the fixing bolts (11).
2. A contact mating structure for an electrical switch according to claim 1, wherein: the switch left shell (1) and the switch right shell (2) are both made of polyethylene.
3. A contact mating structure for an electrical switch according to claim 1, wherein: the switch left shell (1) is in threaded connection with the switch right shell (2) through a bolt.
4. A contact mating structure for an electrical switch according to claim 1, wherein: the movable control handle (3) is connected with the switch left shell (1) in a rotating mode, and the movable control handle (3) is connected with the switch right shell (2) in a rotating mode.
5. A contact mating structure for an electrical switch according to claim 1, wherein: the upper wiring terminal (4) and the lower wiring terminal (5) are both electrically connected through a wire and a power supply.
6. A contact mating structure for an electrical switch according to claim 1, wherein: the switch moving contact (9) is in sliding connection with the switch left shell (1) through a movable control handle (3).
7. A contact mating structure for an electrical switch according to claim 1, wherein: the arc extinguishing grid (7) is made of galvanized iron, and the magnetic arc striking rod (8) is made of galvanized iron and is used as the arc striking grid (7) of the magnetic arc striking rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120173616.4U CN214203596U (en) | 2021-01-22 | 2021-01-22 | Contact matching structure of electrical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120173616.4U CN214203596U (en) | 2021-01-22 | 2021-01-22 | Contact matching structure of electrical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214203596U true CN214203596U (en) | 2021-09-14 |
Family
ID=77637202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120173616.4U Active CN214203596U (en) | 2021-01-22 | 2021-01-22 | Contact matching structure of electrical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214203596U (en) |
-
2021
- 2021-01-22 CN CN202120173616.4U patent/CN214203596U/en active Active
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