CN210429678U - Connecting structure of plastic arc cavity and magnetic conductive sheet of direct current contactor - Google Patents
Connecting structure of plastic arc cavity and magnetic conductive sheet of direct current contactor Download PDFInfo
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- CN210429678U CN210429678U CN201921696289.XU CN201921696289U CN210429678U CN 210429678 U CN210429678 U CN 210429678U CN 201921696289 U CN201921696289 U CN 201921696289U CN 210429678 U CN210429678 U CN 210429678U
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- magnetic conductive
- direct current
- arc chamber
- conductive plate
- current contactor
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Abstract
The utility model discloses a direct current contactor's plastics arc chamber and magnetic conductive plate's connection structure, including plastics arc chamber and magnetic conductive plate, the magnetic conductive plate is in length direction bending type U-shaped, symmetric distribution has four locating holes on four angles in plastics arc chamber, four locating hole positions that the four corners of magnetic conductive plate corresponds plastics arc chamber are equipped with four cockscomb structure archs, the size of locating hole is less than cockscomb structure protruding size, the magnetic conductive plate passes through cockscomb structure protruding card is gone into form interference fit behind the locating hole with plastics arc chamber fixed connection. This direct current contactor plastics arc chamber and magnetic conduction piece connection structure carries out interference fit through setting up locating hole and cockscomb structure arch and is connected, has not only reduced product cost, has improved production efficiency, connects reliable and stable moreover, ensures the product quality.
Description
Technical Field
The utility model belongs to the technical field of direct current contactor, specific saying so relates to a material arc chamber that direct current contactor moulds and connection structure of magnetic conductive plate.
Background
At present, the arc cavity of the common direct current contactor in the market is mostly of a ceramic structure, the arc cavity is usually fixed by welding with a magnetic conductive sheet, the cost is high, the efficiency is low, and the direct current contactor fixed by screws is easy to lose the direct current contactor failure phenomenon caused by screw looseness when frequent actions and long-term temperature difference change are large.
Disclosure of Invention
In order to overcome the defects, the utility model provides a direct current contactor's plastics arc chamber and magnetic conductive plate's connection structure has reduced product cost, improves the reliability in strength production efficiency and the product use.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a direct current contactor's plastics arc chamber and magnetic conduction piece's connection structure, includes plastics arc chamber and magnetic conduction piece, the magnetic conduction piece is in length direction bending type U-shaped, four symmetric distributions have four locating holes on four angles in plastics arc chamber, four locating hole positions that the four corners of magnetic conduction piece corresponds plastics arc chamber are equipped with four serration, the size of locating hole is less than serration's size, the magnetic conduction piece passes through serration card is gone into form interference fit behind the locating hole with plastics arc chamber fixed connection.
As a further improvement, the serration is provided with a plurality of orientations and the teeth of the magnetic conductive sheet are arranged, and the front end size of the serration is smaller than the terminal size of the serration.
As a further improvement of the utility model, the locating hole is the square hole, the serration is square protrusion.
As a further improvement of the utility model, the locating hole is the round hole, the serration is circular arch.
The utility model has the advantages that: the plastic arc cavity of the direct current contactor is connected with the magnetic conduction sheet in an interference fit mode through the positioning holes and the saw-toothed protrusions, so that the product cost is reduced, the production efficiency is improved, the connection is stable and reliable, and the product quality is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
fig. 3 is an exploded schematic view of the present invention.
The following description is made with reference to the accompanying drawings:
1-plastic arc cavity; 2-magnetic conductive sheet;
11-positioning holes; 21-serration.
Detailed Description
The following description of a preferred embodiment of the present invention will be made in conjunction with the accompanying drawings. However, the scope of the present invention is not limited to the following embodiments, and all simple equivalent changes and modifications made by the claims and the contents of the specification are still included in the scope of the present invention.
Referring to fig. 1-3, for a direct current contactor's plastics arc chamber and magnetic conductive plate's connection structure, including plastics arc chamber 1 and magnetic conductive plate 2, the magnetic conductive plate is at length direction bending type U-shaped, symmetric distribution has four locating holes 11 on four angles in plastics arc chamber, four locating hole positions that the four corners of magnetic conductive plate corresponds plastics arc chamber are equipped with four cockscomb structure archs 21, the size of locating hole is less than cockscomb structure arch's size, the magnetic conductive plate passes through cockscomb structure arch card is gone into form interference fit behind the locating hole with plastics arc chamber fixed connection.
Preferably, the sawtooth-shaped protrusions are provided with a plurality of teeth facing the direction of the magnetic conductive sheet, and the size of the front ends of the sawtooth-shaped protrusions is smaller than that of the tail ends of the sawtooth-shaped protrusions; the positioning holes are square holes, and the saw-tooth-shaped protrusions are square protrusions; the positioning holes are round holes, and the saw-toothed protrusions are round protrusions.
The magnetic conductive sheet and the plastic arc cavity of the connecting structure of the plastic arc cavity and the magnetic conductive sheet of the direct current contactor are both rectangular, and the magnetic conductive sheet is bent into a U shape in the length direction. The plastic arc cavity is provided with positioning holes at four corners respectively, and the magnetic conduction sheet is correspondingly provided with four saw-tooth-shaped protrusions.
When the plastic arc cavity is connected with the magnetic conductive sheet, the magnetic conductive sheet and the plastic arc cavity are opposite and are pressed in the vertical direction by force, so that the four sawtooth-shaped protrusions on the magnetic conductive sheet are respectively inserted into the four positioning holes on the plastic arc cavity, and the size of the positioning holes of the plastic arc cavity is slightly smaller than the sawtooth-shaped protrusions of the magnetic conductive sheet, so that interference fit is formed between the sawtooth-shaped protrusions and the positioning holes after the sawtooth-shaped protrusions are inserted into the positioning holes, and the plastic arc cavity. Because the plastic arc cavity is made of plastic, the plastic arc cavity and the plastic arc cavity are tightly pressed and combined and then are matched and fastened with the sawtooth-shaped bulges on the magnetic conductive sheet by means of elastic deformation of the plastic arc cavity.
The size of the front end of the sawtooth-shaped protrusion is smaller than that of the tail end of the sawtooth-shaped protrusion, so that on one hand, guiding and pressing are facilitated, on the other hand, the contact area of the sawtooth-shaped protrusion and the plastic arc cavity is increased, and the sawtooth-shaped protrusion and the plastic arc cavity are combined more firmly.
The positioning holes and the saw-toothed protrusions are arranged in the same shape and can be square or circular respectively, so that the contact surface between the positioning holes and the saw-toothed protrusions is large as much as possible, and stable and reliable connection is realized.
Therefore, the plastic arc cavity of the direct current contactor is connected with the magnetic conduction sheet in an interference fit mode through the positioning holes and the saw-toothed protrusions, so that the product cost is reduced, the production efficiency is improved, the connection is stable and reliable, and the product quality is ensured.
Claims (4)
1. The utility model provides a direct current contactor's plastics arc chamber and magnetic conductive plate's connection structure, includes plastics arc chamber (1) and magnetic conductive plate (2), the magnetic conductive plate forms the U-shaped, its characterized in that at length direction bending type: four locating holes (11) are symmetrically distributed on four corners of the plastic arc cavity, four locating hole positions of four corners of the magnetic conduction piece corresponding to the plastic arc cavity are provided with four sawtooth-shaped protrusions (21), the size of each locating hole is smaller than that of each sawtooth-shaped protrusion, and the magnetic conduction piece is clamped into the sawtooth-shaped protrusions to form interference fit with the locating holes and fixedly connect the plastic arc cavity.
2. The connecting structure of the plastic arc cavity and the magnetic conductive sheet of the direct current contactor as claimed in claim 1, wherein: the sawtooth-shaped protrusions are provided with a plurality of teeth facing the direction of the magnetic conductive sheet, and the size of the front ends of the sawtooth-shaped protrusions is smaller than that of the tail ends of the sawtooth-shaped protrusions.
3. The connecting structure of the plastic arc cavity and the magnetic conductive sheet of the direct current contactor as claimed in claim 2, wherein: the locating hole is a square hole, and the sawtooth-shaped protrusions are square protrusions.
4. The connecting structure of the plastic arc cavity and the magnetic conductive sheet of the direct current contactor as claimed in claim 2, wherein: the positioning holes are round holes, and the saw-toothed protrusions are round protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921696289.XU CN210429678U (en) | 2019-10-11 | 2019-10-11 | Connecting structure of plastic arc cavity and magnetic conductive sheet of direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921696289.XU CN210429678U (en) | 2019-10-11 | 2019-10-11 | Connecting structure of plastic arc cavity and magnetic conductive sheet of direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210429678U true CN210429678U (en) | 2020-04-28 |
Family
ID=70369937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921696289.XU Active CN210429678U (en) | 2019-10-11 | 2019-10-11 | Connecting structure of plastic arc cavity and magnetic conductive sheet of direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210429678U (en) |
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2019
- 2019-10-11 CN CN201921696289.XU patent/CN210429678U/en active Active
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