CN216288199U - Insulating device and contactor - Google Patents
Insulating device and contactor Download PDFInfo
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- CN216288199U CN216288199U CN202122714494.8U CN202122714494U CN216288199U CN 216288199 U CN216288199 U CN 216288199U CN 202122714494 U CN202122714494 U CN 202122714494U CN 216288199 U CN216288199 U CN 216288199U
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Abstract
The utility model discloses an insulating device and a contactor. The insulation device comprises an insulation piece and an insulation cap. The insulating member includes: a body portion; a partition wall supported on the body portion and extending in a radial direction and an axial direction of the body portion, the partition wall including first and second sides opposite in the radial direction; and a bridge part connected to the first side of the partition wall, and a through hole allowing a vent pipe to pass through is formed on the bridge part. The insulating cap is suitable for being sleeved on the breather pipe to cover the end part of the breather pipe exposed out of the through hole, and when the insulating cap is sleeved on the breather pipe, one side of the insulating cap is in butt joint with the first side of the partition wall so as to eliminate a gap between the breather pipe and the partition wall. Therefore, the utility model improves the reliability of the electrical isolation between the pair of fixed contacts.
Description
Technical Field
The present invention relates to an insulation device and a contactor comprising the same.
Background
In the prior art, a contactor generally includes a magnetic circuit composed of a housing, a coil, a magnetic conductive piece, a pair of stationary contacts, and a pair of movable contacts. The coil is installed in the inner cavity of the shell, a pair of fixed contacts is fixedly arranged in the shell, and a pair of movable contacts is movably arranged in the shell. When the coil is electrified, the pair of moving contacts move to the electric contact positions contacted with the pair of fixed contacts under the action of electromagnetic force, so that the high-voltage circuit is conducted.
In the prior art, in order to realize the electrical isolation between a pair of fixed contacts, an insulating isolation wall must be arranged between the pair of fixed contacts. In the prior art, an insulating partition wall is only arranged at a position opposite to a static contact, and no partition wall is arranged at positions on two sides of the static contact, so that the electrical isolation between a pair of static contacts is unreliable. In addition, in the prior art, the contactor further includes a vent pipe led out from the housing, and a gap exists between the vent pipe and the partition wall, which also results in unreliable electrical isolation between the pair of stationary contacts.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.
According to one aspect of the present invention, there is provided an insulating device for electrically isolating a pair of stationary contacts of a contactor. The insulation device comprises an insulation piece and an insulation cap. The insulating member includes: a body portion; a partition wall supported on the body portion and extending in a radial direction and an axial direction of the body portion, the partition wall including first and second sides opposite in the radial direction; and a bridge part connected to the first side of the partition wall, and a through hole allowing a vent pipe to pass through is formed on the bridge part. The insulating cap is suitable for being sleeved on the breather pipe to cover the end part of the breather pipe exposed out of the through hole, and when the insulating cap is sleeved on the breather pipe, one side of the insulating cap is in butt joint with the first side of the partition wall so as to eliminate a gap between the breather pipe and the partition wall.
According to an exemplary embodiment of the present invention, when the insulation cap is fitted over the snorkel, one side of the bottom of the insulation cap is butted against a first side of the partition wall.
According to another exemplary embodiment of the present invention, the insulation cap extends in a radial direction and an axial direction of the body portion to constitute a continuous separation wall continuous with the separation wall.
According to another exemplary embodiment of the present invention, when the insulation cap is fitted over the snorkel, a portion of one side of the insulation cap overlaps a portion of the first side of the separation wall in a thickness direction of the separation wall.
According to another exemplary embodiment of the present invention, a slot is formed at the one side of the insulative cap, and an edge portion of the first side of the insulation wall is adapted to be inserted into the slot of the insulative cap such that the one side of the insulative cap is continued to the first side of the insulation wall.
According to another exemplary embodiment of the present invention, the insertion groove of the insulation cap and the edge portion of the first side of the partition wall are completely continued in the axial direction.
According to another exemplary embodiment of the present invention, the other side of the insulation cap extends all the way to the body part in a radial direction of the body part.
According to another exemplary embodiment of the present invention, a positioning column is further formed on the insulating member, and a positioning hole matched with the positioning column is formed on the insulating cap.
According to another exemplary embodiment of the present invention, the positioning column is located at a side of the through hole close to the body part; and the positioning column is formed on the bridging portion, or the body portion, or a connecting portion between the bridging portion and the body portion.
According to another exemplary embodiment of the present invention, the second side of the partition wall extends all the way to and is connected with the body part in a radial direction of the body part; or the second side of the partition wall extends in the radial direction of the body portion to the vicinity of the coil lead-out wire.
According to another exemplary embodiment of the present invention, the separation wall includes a main body portion facing the pair of stationary contacts and an extending portion extending beyond the pair of stationary contacts in the radial direction; the extension portion and the insulation cap extend outward from both sides of the main body portion of the partition wall, respectively.
According to another exemplary embodiment of the present invention, a height of the main portion of the partition wall is greater than or equal to a height of the extension portion of the partition wall; and the height of the extended portion of the partition wall is greater than or equal to the height of the insulation cap.
According to another exemplary embodiment of the present invention, the insulating member further includes a pair of insulating sleeves respectively sleeved on the end portions of the pair of stationary contacts, the pair of insulating sleeves are respectively located at the front and rear sides of the partition wall, and the insulating sleeves are connected between the partition wall and the inner wall of the body portion.
According to another exemplary embodiment of the present invention, the height of the insulation cap and the partition wall is greater than the height of the insulation sleeve.
According to another aspect of the present invention, there is provided a contactor including: a housing; and a holder mounted in the housing; a pair of stationary contacts fixed to the holder; the breather pipe is fixed on the holding piece and communicated with the inner cavity of the shell; and the insulating device is arranged on the opening of the shell, the insulating part and the insulating cap of the insulating device separate the pair of fixed contacts, and the insulating cap covers the exposed end part of the vent pipe.
According to an exemplary embodiment of the utility model, the contactor further comprises: a pair of coil lead-out wires fixed to the holder for electrical connection with the coil mounted in the inner cavity of the housing; the partition wall extends between the pair of coil lead-out wires.
In each of the foregoing exemplary embodiments according to the present invention, the insulating cap of the snorkel forms a continuous partition wall continuous with the partition wall, thereby eliminating a gap between the snorkel and the partition wall and improving reliability of electrical isolation between a pair of stationary contacts.
In addition, in some exemplary embodiments of the present invention, the isolation wall includes not only the main portion directly facing the fixed contact, but also an extension portion extending beyond the side portion of the fixed contact, so as to further increase the creepage distance between the pair of fixed contacts, thereby ensuring the reliability of electrical isolation.
Other objects and advantages of the present invention will become apparent from the following description of the utility model which refers to the accompanying drawings, and may assist in a comprehensive understanding of the utility model.
Drawings
FIG. 1 shows a schematic perspective view of a contactor according to an exemplary embodiment of the utility model, wherein an insulating cap is fitted over the snorkel;
FIG. 2 shows a schematic perspective view of a contactor according to an exemplary embodiment of the utility model with an insulating cap separated from a breather tube;
FIG. 3 shows an exploded schematic view of a contactor according to an exemplary embodiment of the present invention;
FIG. 4 is a perspective view of the insulator of the contactor shown in FIG. 3;
fig. 5 shows a perspective view of the insulating cap of the contactor shown in fig. 3;
FIG. 6 shows an axial cross-sectional view of the contactor shown in FIG. 1;
fig. 7 shows a schematic perspective view of a contactor according to another exemplary embodiment of the present invention.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the utility model with reference to the drawings is intended to illustrate the general inventive concept and should not be taken as limiting the utility model.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to one general technical concept of the present invention, an insulating device for electrically isolating a pair of stationary contacts of a contactor is provided. The insulation device comprises an insulation piece and an insulation cap. The insulating member includes: a body portion; a partition wall supported on the body portion and extending in a radial direction and an axial direction of the body portion, the partition wall including first and second sides opposite in the radial direction; and a bridge part connected to the first side of the partition wall, and a through hole allowing a vent pipe to pass through is formed on the bridge part. The insulating cap is suitable for being sleeved on the breather pipe to cover the end part of the breather pipe exposed out of the through hole, and when the insulating cap is sleeved on the breather pipe, one side of the insulating cap is in butt joint with the first side of the partition wall so as to eliminate a gap between the breather pipe and the partition wall.
According to another general technical concept of the present invention, there is provided a contactor, including: a housing; and a holder mounted in the housing; a pair of stationary contacts fixed to the holder; the breather pipe is fixed on the holding piece and communicated with the inner cavity of the shell; and the insulating device is arranged on the opening of the shell, the insulating part and the insulating cap of the insulating device separate the pair of fixed contacts, and the insulating cap covers the exposed end part of the vent pipe.
Fig. 1 shows a schematic perspective view of a contactor according to an exemplary embodiment of the present invention, wherein an insulating cap 40 is fitted over a breather tube 3; fig. 2 shows a schematic perspective view of a contactor according to an exemplary embodiment of the present invention, in which an insulating cap 40 is separated from a breather tube 3; fig. 3 shows an exploded schematic view of a contactor according to an exemplary embodiment of the present invention. Fig. 6 shows an axial cross-sectional view of the contactor shown in fig. 1.
As shown in fig. 1-3 and 6, in the illustrated embodiment, the contactor includes: a housing 10, a holder 20, a pair of stationary contacts 1, a vent tube 3 and an insulating device. The holder 20 is installed in the housing 10. A pair of stationary contacts 1 is fixed to a holder 20. The vent tube 3 is fixed to the holder 20 and communicates with the inner cavity 12 of the housing 10. An insulating means is mounted on the opening 11 of the housing 10 for electrically isolating a pair of stationary contacts 1 of the contactor.
Fig. 4 shows a perspective view of the insulating member 30 of the contactor shown in fig. 3; fig. 5 shows a perspective view of the insulating cap 40 of the contactor shown in fig. 3.
As shown in fig. 1 to 6, in the illustrated embodiment, the insulating means includes an insulating member 30 and an insulating cap 40. The insulating member 30 includes: a body portion 310, a partition wall 320, and a bridge portion 340. In the illustrated embodiment, the body portion 310 is disposed in, but not limited to, a ring shape. The partition wall 320 is supported on the body part 310 and extends in the radial and axial directions of the body part 310. The partition wall 320 includes a first side (right side in fig. 1) and a second side (left side in fig. 1) that are opposite in the aforementioned radial direction. A bridge portion 340 is connected between the first side of the partition wall 320 and the inner wall of the body portion 310, and a through hole 341 allowing the air pipe 3 to pass therethrough is formed on the bridge portion 340. The insulating cap 40 is adapted to be fitted over the breather pipe 3 to cover the end of the breather pipe 3 exposed from the through hole 341.
As shown in fig. 1 to 6, in the illustrated embodiment, when the insulation cap 40 is fitted over the ventilation pipe 3, one side of the insulation cap 40 is butted against a first side of the partition wall 320 to eliminate a gap between the ventilation pipe 3 and the partition wall 320. Thus, the creepage distance between the pair of static contacts 1 can be further increased, and the reliability of electrical isolation is ensured.
As shown in fig. 1 to 6, in the illustrated embodiment, when the insulative cap 40 is fitted over the air pipe 3, one side of the bottom of the insulative cap 40 is butted against a first side of the partition wall 320.
As shown in fig. 1 to 6, in the illustrated embodiment, when the insulation cap 40 is fitted over the snorkel 3, one side of a portion of the insulation cap 40 is disposed to overlap a first side of a portion of the separation wall 320 in a thickness direction of the separation wall 320.
As shown in fig. 1 to 6, in the illustrated embodiment, the insulation cap 40 extends in the radial and axial directions of the body portion 310 to constitute a continuous partition wall continuous with the partition wall 320. Therefore, the insulating cap 40 can increase the creepage distance between the pair of stationary contacts 1, and ensure the reliability of electrical isolation.
As shown in fig. 1 to 6, in the illustrated embodiment, the insertion groove 42 of the insulative cap 40 and the edge portion of the first side of the partition wall 320 are completely continued in the axial direction.
As shown in fig. 1 to 6, in the illustrated embodiment, a slot 42 is formed at one side of the insulative cap 40, and an edge portion of the first side of the partition wall 320 is adapted to be inserted into the slot 42 of the insulative cap 40, so that one side of the insulative cap 40 is continued to the first side of the partition wall 320.
As shown in fig. 1 to 6, in the illustrated embodiment, a blind hole 43 adapted to fit an end of the breather pipe 3 exposed from the through hole 341 is formed in the insulating cap 40. The exposed end of the vent tube 3 may be inserted and concealed in the blind hole 43 of the insulating cap 40.
As shown in fig. 1 to 6, in the illustrated embodiment, the other side of the insulation cap 40 extends all the way to the body portion 310 in a radial direction of the body portion 310. However, the present invention is not limited to the illustrated embodiment, and for example, the other side of the insulative cap 40 may extend to a position close to the body part 310.
As shown in fig. 1 to 6, in the illustrated embodiment, a positioning post 350 is further formed on the insulating member 30, and a positioning hole 41 matched with the positioning post 350 is formed on the insulating cap 40. The positioning post 350 is located on a side of the through hole 341 close to the body portion 310, i.e. on a side opposite to the isolation wall 320. Thus, it can be ensured that both sides of the insulative cap 40 can be positioned.
As shown in fig. 1 to 6, in the illustrated embodiment, the positioning column 350 is formed on the connection portion between the bridge portion 340 and the body portion 310, however, the present invention is not limited thereto, and the positioning column 350 may be formed on the bridge portion 340 or the body portion 310.
As shown in fig. 1 to 6, in the illustrated embodiment, the second side of the partition wall 320 extends in the radial direction of the body portion 310 to the vicinity of the coil lead-out wires 2 of the contactor. However, the present invention is not limited thereto, and the second side of the isolation wall 320 may extend to any position beyond the stationary contact 1 along the radial direction of the body portion 310. For example, the second side of the partition wall 320 may extend in the radial direction of the body part 310 to between the pair of coil lead-out wires 2.
As shown in fig. 1 to 6, in the illustrated embodiment, the separation wall 320 includes a main body portion 321 opposite to the pair of stationary contacts 1 and an extension portion 322 extending radially beyond the pair of stationary contacts 1. The extension portion 322 of the partition wall 320 and the insulation cap 40 are extended outward from both sides of the body portion 321 of the partition wall 320, respectively.
As shown in fig. 1 to 6, in the illustrated embodiment, the body portion 321 of the partition wall 320 extends axially upward beyond the extension portion 322 of the partition wall 320 and the insulation cap 40. However, the present invention is not limited to the illustrated embodiment, for example, the height of the body portion 321 of the partition wall 320 may be greater than or equal to the height of the extension portion 322 of the partition wall 320, and the height of the extension portion 322 of the partition wall 320 may be greater than or equal to the height of the insulative cap 40.
As shown in fig. 1 to 6, in the illustrated embodiment, the insulating member 30 further includes a pair of insulating sleeves 330 for respectively being sleeved on the ends of the pair of stationary contacts 1. A pair of insulation covers 330 are respectively positioned at front and rear sides of the partition wall 320, and the insulation covers 330 are coupled between the partition wall 320 and the inner wall of the body part 310. In the illustrated embodiment, the height of the partition wall 320 and the insulation cap 40 is greater than the height of the insulation sleeve 330. The end face of the stationary contact 1 is exposed from the insulating bush 330 so as to be electrically connected to a wire (not shown).
As shown in fig. 1-6, in the illustrated embodiment, the contactor further comprises an insulating sealant 50. After the insulating member 30 is mounted on the opening 11 of the case 10, the insulating sealant 50 is poured into the opening 11 of the case 10 to seal the opening 11 of the case 10.
As shown in fig. 1 to 6, in the illustrated embodiment, after the contactor is assembled, air in the inner cavity 12 of the housing 10 is firstly drawn out through the vent pipe 3, and then inert gas is filled into the inner cavity 12 of the housing 10 through the vent pipe 3. After filling with inert gas, the exposed end of the vent tube 3 is clamped and closed by a clamping tool to prevent air leakage.
As shown in fig. 1-6, in the illustrated embodiment, the contactor further comprises a pair of coil lead-out wires 2. A pair of coil lead wires 2 are fixed to the holder 20 for electrical connection with a coil (not shown) mounted in the inner cavity 12 of the housing 10 to supply power to the coil.
Fig. 7 shows a schematic perspective view of a contactor according to another exemplary embodiment of the present invention.
The main difference of the contactor shown in fig. 7 compared to the embodiment of the contactor shown in fig. 1-6 is the different extension of the second side of the partition wall 320.
As shown in fig. 7, in the illustrated embodiment, the second side of the partition wall 320 extends all the way to the body 310 in the radial direction of the body 310 and is connected to the body 310. Therefore, the creepage distance between the pair of fixed contacts can be further increased, and the reliability of electrical isolation is ensured.
It will be appreciated by those skilled in the art that the above described embodiments are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without structural or conceptual conflicts, and that such modifications are intended to fall within the scope of the present invention.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the utility model.
Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the utility model.
Claims (16)
1. An insulating device for electrically isolating a pair of stationary contacts of a contactor, the insulating device comprising:
an insulator, comprising:
a body portion;
a partition wall supported on the body portion and extending in a radial direction and an axial direction of the body portion, the partition wall including first and second sides opposite in the radial direction; and
the bridging part is connected to the first side of the partition wall, and a through hole allowing a vent pipe to pass through is formed in the bridging part; and
an insulating cap adapted to be fitted over the breather pipe to cover an end portion of the breather pipe exposed from the through hole,
when the insulation cap is sleeved on the vent pipe, one side of the insulation cap is in butt joint with the first side of the partition wall so as to eliminate a gap between the vent pipe and the partition wall.
2. The insulating device of claim 1, wherein:
when the insulating cap is sleeved on the breather pipe, one side of the bottom of the insulating cap is in butt joint with the first side of the partition wall.
3. The insulating device of claim 1, wherein:
the insulating cap extends along the radial direction and the axial direction of the body part to form a continuous separation wall which is continuous with the separation wall.
4. The insulating device of claim 1, wherein:
when the insulation cap is sleeved on the breather pipe, one side of part of the insulation cap and the first side of part of the separation wall are arranged in an overlapping mode in the thickness direction of the separation wall.
5. The insulating device of claim 1, wherein:
an insertion groove is formed at the one side of the insulation cap, and an edge portion of the first side of the isolation wall is adapted to be inserted into the insertion groove of the insulation cap, so that the one side of the insulation cap and the first side of the isolation wall are connected together.
6. The insulating device of claim 5, wherein:
the slot on the insulation cap and the edge part of the first side of the isolation wall are completely connected together in the axial direction.
7. The insulating device of claim 1, wherein:
the other side of the insulation cap extends to the body part along the radial direction of the body part.
8. The insulating device of claim 1, wherein:
and a positioning column is also formed on the insulating part, and a positioning hole matched with the positioning column is formed on the insulating cap.
9. The insulating device of claim 8, wherein:
the positioning column is positioned at one side of the through hole close to the body part; and is
The positioning post is formed on the bridging portion, the body portion, or a connecting portion between the bridging portion and the body portion.
10. The insulating device of claim 1, wherein:
the second side of the separation wall extends to the body part along the radial direction of the body part and is connected with the body part; or
The second side of the partition wall extends in the radial direction of the body portion to the vicinity of a coil lead-out wire.
11. The insulating device of claim 1, wherein:
the isolation wall comprises a main body part opposite to the pair of fixed contacts and an extension part extending beyond the pair of fixed contacts along the radial direction;
the extension portion and the insulation cap extend outward from both sides of the main body portion of the partition wall, respectively.
12. The insulating device of claim 11, wherein:
the height of the main body part of the partition wall is greater than or equal to the height of the extension part of the partition wall; and is
The height of the extending part of the isolation wall is greater than or equal to that of the insulation cap.
13. The insulating device according to any one of claims 1 to 12, characterized in that:
the insulating part further comprises a pair of insulating sleeves which are respectively sleeved on the end parts of the pair of static contacts, the pair of insulating sleeves are respectively positioned on the front side and the rear side of the isolation wall, and the insulating sleeves are connected between the isolation wall and the inner wall of the body part.
14. The insulating device of claim 13, wherein:
the height of the isolation wall and the height of the insulation cap are larger than that of the insulation sleeve.
15. A contactor, comprising:
a housing; and
a holder mounted in the housing;
a pair of stationary contacts fixed to the holder;
the breather pipe is fixed on the holding piece and communicated with the inner cavity of the shell; and
the insulation unit of any of claims 1-14, mounted on an opening of the housing,
the insulating member and the insulating cap of the insulating device separate the pair of stationary contacts, and the insulating cap covers the exposed end of the vent pipe.
16. The contactor as claimed in claim 15, further comprising:
a pair of coil lead-out wires fixed to the holder for electrical connection with the coil mounted in the inner cavity of the housing;
the partition wall extends between the pair of coil lead-out wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122714494.8U CN216288199U (en) | 2021-11-08 | 2021-11-08 | Insulating device and contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122714494.8U CN216288199U (en) | 2021-11-08 | 2021-11-08 | Insulating device and contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216288199U true CN216288199U (en) | 2022-04-12 |
Family
ID=81005977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122714494.8U Active CN216288199U (en) | 2021-11-08 | 2021-11-08 | Insulating device and contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216288199U (en) |
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2021
- 2021-11-08 CN CN202122714494.8U patent/CN216288199U/en active Active
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