CN210575749U - Special-shaped ceramic structure - Google Patents
Special-shaped ceramic structure Download PDFInfo
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- CN210575749U CN210575749U CN201921831854.9U CN201921831854U CN210575749U CN 210575749 U CN210575749 U CN 210575749U CN 201921831854 U CN201921831854 U CN 201921831854U CN 210575749 U CN210575749 U CN 210575749U
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Abstract
The utility model relates to the field of direct current contactor devices, in particular to a special-shaped ceramic structure, which comprises a ceramic cover, wherein the ceramic cover is provided with quadrangular steps, and the upper side edge and the lower side edge of the ceramic cover are respectively provided with an upper magnetic steel and a lower magnetic steel; a first mounting hole and a second mounting hole are formed in the upper part and the lower part of the top surface of the step, and static contacts are arranged in the first mounting hole and the second mounting hole; the main loop can be used without polarity.
Description
Technical Field
The utility model relates to a direct current contactor device field especially relates to a dysmorphism ceramic structure.
Background
The direct current contactor is a contactor used in a direct current circuit and is mainly used for controlling the direct current circuit; the ceramic cover in the existing direct current contactor is provided with a static contact, but the existing static contact has a single structure, the current direction is vertical to the magnetic field direction, and a main loop cannot be used in a non-polar mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a special-shaped ceramic structure that major loop can nonpolarity use.
The technical scheme of the utility model as follows:
a special-shaped ceramic structure comprises a ceramic cover, wherein the ceramic cover is provided with quadrangular steps, and the special-shaped ceramic structure is characterized in that the upper side edge and the lower side edge of the ceramic cover are respectively provided with upper magnetic steel and lower magnetic steel; a first mounting hole and a second mounting hole are formed in the upper portion and the lower portion of the top face of the step, and static contacts are arranged in the first mounting hole and the second mounting hole.
The included angle between the connecting line between the central axes of the static contacts and the horizontal line direction is 18-22 degrees.
Both sides of the step are arc-shaped side edges; clamping parts are arranged on two sides of the step; the clamping component is an external magnetic circuit clamp, the middle part of the external magnetic circuit clamp is outwards supplied to form an arc section which is matched with the arc side structures on the two sides of the step, the two sides of the arc section are oppositely provided with L-shaped corner sections, and the exposed ends of the corner sections are outwards bent and extended to form transverse sections.
The corner section comprises horizontal portion and vertical portion, and the linkage segment of horizontal portion and vertical portion is convex transition section.
The inner wall surface of the arc section of the outer magnetic circuit clamp is uniformly distributed with strip-shaped convex wear-resistant grains, and the cross section of each wear-resistant grain is triangular.
The utility model has the advantages that: in implementation, because the fixed contacts in the first and second mounting holes are not on the same horizontal line, but are distributed one above the other, the direction of the magnetic field formed by the connecting line between the two fixed contacts and the upper and lower magnetic steels is not vertical, the main loop can be used without polarity, specifically, when the current is connected positively, the arc extinguishing direction blows off to both sides, and the arc extinguishing effect can be achieved; if the current is reversely connected, the arc extinguishing direction is inward, but the two-stage arcs do not intersect, and a good arc extinguishing effect can be achieved.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Wherein: FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the outer magnetic circuit clip of the present invention;
FIG. 3 is a schematic perspective view of the present invention;
in the attached drawing, 1 is a ceramic cover, 2 is a step, 3 is an upper side plate, 4 is a lower side plate, 5 is an upper magnetic steel, 6 is a lower magnetic steel, 7 is a first mounting hole, 8 is a second mounting hole, 9 is a static contact, 10 is an arc side, 11 is an outer magnetic circuit clamp, 12 is an arc section, 13 is a corner section, 14 is a transverse section, 15 is a transverse part, 16 is a vertical part, 17 is an arc transition section, 18 is a wear-resistant line, and 19 is a spherical bulge.
Detailed Description
Referring to fig. 1-3, a special-shaped ceramic structure comprises a ceramic cover 1, wherein the ceramic cover is provided with a quadrilateral step 2, and is characterized in that an upper side edge 3 and a lower side edge 4 of the ceramic cover are respectively provided with an upper magnetic steel 5 and a lower magnetic steel 6; a first mounting hole 7 and a second mounting hole 8 are formed in the upper part and the lower part of the top surface of the step, and static contacts 9 are arranged in the first mounting hole and the second mounting hole; in implementation, because the fixed contacts in the first and second mounting holes are not on the same horizontal line, but are distributed one above the other, the direction of the magnetic field formed by the connecting line between the two fixed contacts and the upper and lower magnetic steels is not vertical, the main loop can be used without polarity, specifically, when the current is connected positively, the arc extinguishing direction blows off to both sides, and the arc extinguishing effect can be achieved; if the current is reversely connected, the arc extinguishing direction is inward, but the two-stage arcs do not intersect, and a good arc extinguishing effect can be achieved.
The included angle between the connecting line between the central axes of the static contacts and the horizontal line direction is 18-22 degrees; in the implementation, the included angle between the connecting line between the central axes of the static contacts and the horizontal line is 18-22 degrees, so that the magnetic field is not vertical to the current direction, and the included angle between the magnetic field and the current direction is 68-72 degrees; wherein when the included angle is 70 degrees, the nonpolar use effect of the main loop is the best.
Both sides of the step are arc-shaped side edges 10; clamping parts are arranged on two sides of the step; the clamping component is an outer magnetic circuit clamp 11, the middle part of the outer magnetic circuit clamp is outwards supplied to form an arc section 12 matched with arc side structures on two sides of the step, two sides of the arc section are oppositely provided with L-shaped corner sections 13, and exposed ends of the corner sections are outwards bent and extend to form transverse sections 14; in the implementation, the two sides of the quadrilateral boss are arc-shaped side edges which are more attached to the peripheral edge of the ceramic cover; the arc-shaped structure protrudes outwards, so that when the arc-shaped structure is matched with an external magnetic circuit clamp for use, the arc-shaped structure can be clamped more firmly; the upper magnetic steel and the lower magnetic steel are clamped on the upper side edge and the lower side edge of the step through the corresponding transverse sections of the outer magnetic circuit clamps.
The corner section is composed of a transverse part 15 and a vertical part 16, and the connecting section of the transverse part and the vertical part is an arc transition section 17. In implementation, the corner section adopts a circular arc structure and is sunken towards the step direction, so that a larger clamping force can be exerted on the direction of the magnetic steel in the clamping process, and the clamping effect is better.
The inner wall surface of the arc section of the outer magnetic circuit clip is uniformly distributed with strip-shaped convex wear-resistant grains 18, and the cross section of each wear-resistant grain is triangular; and a plurality of spherical bulges 19 are uniformly distributed on the inner wall surface of the circular arc section between the wear-resistant grains. The arc section is provided with the wear-resistant line structure, so that the friction force between the outer magnetic circuit clamp and the arc section is greatly enhanced, the clamping effect is better, and the convex structure can be matched with the wear-resistant line to delay the service life of the wear-resistant effect.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (4)
1. A special-shaped ceramic structure comprises a ceramic cover, wherein the ceramic cover is provided with quadrangular steps, and the special-shaped ceramic structure is characterized in that the upper side edge and the lower side edge of the ceramic cover are respectively provided with upper magnetic steel and lower magnetic steel; a first mounting hole and a second mounting hole are formed in the upper portion and the lower portion of the top face of the step, and static contacts are arranged in the first mounting hole and the second mounting hole.
2. A shaped ceramic structure as claimed in claim 1, wherein the line connecting the central axes of the stationary contacts forms an angle of 18 ° to 22 ° with the horizontal.
3. The shaped ceramic structure of claim 1, wherein both sides of the step are rounded; clamping parts are arranged on two sides of the step; the clamping component is an external magnetic circuit clamp, the middle part of the external magnetic circuit clamp is outwards supplied to form an arc section which is matched with the arc side structures on the two sides of the step, the two sides of the arc section are oppositely provided with L-shaped corner sections, and the exposed ends of the corner sections are outwards bent and extended to form transverse sections.
4. A shaped ceramic structure as claimed in claim 3, wherein the corner section is composed of a horizontal portion and a vertical portion, and the connecting section of the horizontal portion and the vertical portion is a circular arc transition section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921831854.9U CN210575749U (en) | 2019-10-29 | 2019-10-29 | Special-shaped ceramic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921831854.9U CN210575749U (en) | 2019-10-29 | 2019-10-29 | Special-shaped ceramic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210575749U true CN210575749U (en) | 2020-05-19 |
Family
ID=70662123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921831854.9U Active CN210575749U (en) | 2019-10-29 | 2019-10-29 | Special-shaped ceramic structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210575749U (en) |
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2019
- 2019-10-29 CN CN201921831854.9U patent/CN210575749U/en active Active
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