CN212365867U - Spring sheet type composite contactor - Google Patents
Spring sheet type composite contactor Download PDFInfo
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- CN212365867U CN212365867U CN201920199983.4U CN201920199983U CN212365867U CN 212365867 U CN212365867 U CN 212365867U CN 201920199983 U CN201920199983 U CN 201920199983U CN 212365867 U CN212365867 U CN 212365867U
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- movable contact
- spring
- arc extinction
- contact piece
- contact
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Abstract
A shell fragment type duplex contactor is characterized in that a static iron core, an electromagnetic coil, a reset spring and a movable iron core are arranged in a contactor shell, and a connecting frame is fixed on the movable iron core; the linking frame is linked with the operation movable contact piece and the arc extinction movable contact piece through an operation movable contact piece pressing spring, an operation movable contact piece spring frame, an arc extinction movable contact piece pressing spring piece and an arc extinction movable contact piece spring frame; the operation movable contact piece is provided with an operation movable contact; the arc extinction movable contact piece is provided with an arc extinction movable contact; a fixed contact piece is arranged in an inner groove of the shell and is provided with an arc extinguishing stationary contact and an operation stationary contact. The device has the advantages that two groups of contacts are provided, and one group of contacts are mainly used for arc extinction and power supply and load connection; the other group of contacts mainly ensures the normal operation of the electrical equipment; adopt the arc extinction movable contact spring piece to compress tightly the arc extinction movable contact spring, compare the height that the spring hold-down structure dwindled arc extinction movable contact spring frame, improved stability, fastness to simple to operate has saved occupation space.
Description
Technical Field
The utility model relates to a shell fragment formula double entry contactor of dual main contact.
Background
In the existing contactor, a single-layer main contact is adopted, when the contactor is in actual use and operation, electric arcs and high temperature are generated just before or after the main contact is disconnected, small balls, small pits, unevenness and an oxide layer can be melted on the contact, poor contact of the contact is caused, contact resistance is increased, heating value is increased in operation, and then ignition and even burnout are caused. This also causes a phenomenon of burning out the motor and the electric device.
Disclosure of Invention
An object of the utility model is to solve the above-mentioned problem that exists now, provide a shell fragment formula double entry contactor of dual main contact.
The utility model is realized as follows: a static iron core, an electromagnetic coil, a reset spring and a movable iron core are arranged in the contactor shell; the linking frame is fixed on the movable iron core, a fixed contact piece is arranged in the inner groove of the shell, the fixed contact piece is provided with an arc extinction fixed contact and an operation fixed contact, the arc extinction movable contact piece is provided with an arc extinction movable contact, and the operation movable contact piece is provided with an operation movable contact; the installation operation movable contact spring hold-down spring in linking the frame, its special point is, and operation movable contact spring frame will link the frame, operation movable contact connects fixedly, and arc extinction movable contact spring frame will move movable contact, arc extinction movable contact and link to compress tightly the spring leaf through arc extinction movable contact and compress tightly fixedly.
The utility model has the advantages that two groups of contacts are provided, one group of contacts is mainly used for arc extinction and power supply and load connection; the other group of contacts mainly ensures the normal operation of the electrical equipment; the arc extinguishing movable contact piece pressing spring piece 10 is adopted to press the arc extinguishing movable contact piece 7, the height of an arc extinguishing movable contact piece spring frame 9 is reduced compared with a spring pressing structure, the stability and the firmness are improved, the installation is convenient, and the occupied space is saved; the operation stationary contact 6b of the fixed contact piece 6 adopts the installation mode of figure 3, and the installation is more convenient.
Because the arc extinction contact contacts with the ignition in advance, when the operation contact contacts, the arc is not generated any more, thereby protecting the cleanness and the flatness of the contact surface of the operation contact and ensuring good contact. The heating is reduced, the conductivity is improved, the service life of the contactor is prolonged, and meanwhile, the safe and normal operation of the electrical equipment is also protected.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view;
fig. 3 is a schematic view showing another installation structure of the moving stationary contact 6b of the stationary contact 6.
Detailed Description
The following detailed description is made with reference to the accompanying drawings: as shown in the figure, a static iron core 2, an electromagnetic coil 3, a return spring 4 and a movable iron core 5 are arranged in a contactor shell 1; the linking frame 13 is fixed on the movable iron core 5, a fixed contact 6 is arranged in the inner groove of the shell 1, the fixed contact 6 is provided with an arc extinguishing fixed contact 6a and an operation fixed contact 6b, the arc extinguishing movable contact 7 is provided with an arc extinguishing movable contact 7a, and the operation movable contact 8 is provided with an operation movable contact 8 a; the operation movable contact spring pressing spring 12 is installed in the connecting frame 13, the operation movable contact spring frame 11 is used for connecting and fixing the connecting frame 13 and the operation movable contact 8, the arc extinguishing movable contact spring frame 9 is used for connecting the operation movable contact 8 and the arc extinguishing movable contact 7, and the arc extinguishing movable contact pressing spring piece 10 is used for pressing and fixing the arc extinguishing movable contact.
The working principle is as follows:
will the utility model discloses install in the circuit, binding post connects respectively on power and load, and during operation, electromagnetic coil 3 has got the electricity, and quiet iron core 2 is magnetized, produces magnetic force, attracts to move iron core 5, drives linking frame 13, drives arc extinction movable contact 7, operation movable contact 8, makes arc extinction movable contact 7a, operation movable contact 8a synchronous, be close to fast to arc extinction stationary contact 6a, operation stationary contact 6b respectively. Because the distance between the arc-extinguishing movable contact and the arc-extinguishing static contact is smaller than that between the moving contact and the arc-extinguishing static contact, the arc-extinguishing movable contact and the arc-extinguishing static contact are contacted first, and an electric arc, a spark, a solid contact and a compact contact are generated immediately before the contact; then, the moving contact and the static contact are compacted and pressed; because the power supply and the load are connected by the arc extinction contact, when the operation contacts are contacted, the arc is not generated any more, thereby protecting the smoothness of the contact surfaces of the operation contacts, ensuring good contact of the operation contacts, ensuring normal circulation of current, reducing contact resistance, reducing heat generation, prolonging the service life of the contactor and ensuring good operation of electrical equipment.
Claims (1)
1. A spring plate type duplex contactor is characterized in that a static iron core, an electromagnetic coil, a reset spring and a movable iron core are arranged in a contactor shell; the linking frame is fixed on the movable iron core, a fixed contact piece is arranged in the inner groove of the shell, the fixed contact piece is provided with an arc extinction fixed contact and an operation fixed contact, the arc extinction movable contact piece is provided with an arc extinction movable contact, and the operation movable contact piece is provided with an operation movable contact; installation operation movable contact spring hold-down spring in linking frame, its characterized in that, operation movable contact spring frame will link frame, operation movable contact connection fixed, and arc extinction movable contact spring frame will move movable contact, arc extinction movable contact link to compress tightly the spring leaf through arc extinction movable contact and compress tightly fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920199983.4U CN212365867U (en) | 2019-02-15 | 2019-02-15 | Spring sheet type composite contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920199983.4U CN212365867U (en) | 2019-02-15 | 2019-02-15 | Spring sheet type composite contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212365867U true CN212365867U (en) | 2021-01-15 |
Family
ID=74137107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920199983.4U Active CN212365867U (en) | 2019-02-15 | 2019-02-15 | Spring sheet type composite contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212365867U (en) |
-
2019
- 2019-02-15 CN CN201920199983.4U patent/CN212365867U/en active Active
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