CN211507409U - Do benefit to contact piece limit structure who improves reliability - Google Patents
Do benefit to contact piece limit structure who improves reliability Download PDFInfo
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- CN211507409U CN211507409U CN201921871692.1U CN201921871692U CN211507409U CN 211507409 U CN211507409 U CN 211507409U CN 201921871692 U CN201921871692 U CN 201921871692U CN 211507409 U CN211507409 U CN 211507409U
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- contact piece
- shell
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- limiting part
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Abstract
A contact piece limiting structure beneficial to improving reliability comprises a shell, a static contact piece and a movable contact piece, wherein a contact area is arranged on the shell, the static contact piece is installed on the shell and comprises a contact part arranged in the contact area, the movable contact piece can be in contact with or separated from the static contact piece in the contact area, the static contact piece further comprises a limiting part, the limiting part is arranged on the outer side of the contact area, the limiting part and the contact part are located in the same contact plane, and the limiting part is in contact with the shell and an adjacent shell simultaneously. The limiting part and the contact part which are arranged outside the contact area are in the same plane without bending, so that the phenomenon that the deviation occurs due to the accumulation of bending tolerance of the contact piece and production tolerance of the shell or the looseness of the contact piece caused by size change due to the deformation of the shell is avoided, the stable contact between the movable contact piece and the contact piece is ensured, and the reliability of a product is improved.
Description
Technical Field
The utility model relates to an electrical switch field, in particular to do benefit to contact piece limit structure who improves reliability.
Background
Electrical switches are electrical components commonly used in everyday life that can open a circuit, interrupt current, or allow it to flow to other circuits. Also the most common switches are electromechanical devices for human operation, in which there are one or several contact pieces. The "closed" (ON) of the contact indicates that the contact is conductive, allowing current to flow; an "open" (OFF) of the switch indicates that the contact is not conductive, creating an open circuit, and not allowing current to flow.
The contact blades of an electrical switch are typically mounted in a housing. In order to facilitate the assembly of the contact pieces, the housing is generally provided with mounting slot positions in which the contact pieces are mounted. Through arranging limit structure on casing and adjacent casing for the contact piece position is firm not to rock, in order to save the requirement of casing inner space and cooperation wiring angle, the certain angle of bending of contact piece is bent to present product, and carry on spacingly to the contact piece in a plurality of planes. But because the error of contact piece bending and casing injection moulding production and processing to and casing deformation under different temperature humidity environment, perhaps along with the increase of live time in the use, the ageing of casing plastic part, and long-term service environment can lead to the unable fine laminating between several planes of bending of casing and contact, thereby lead to the contact not hard up and shift.
The displacement of the contact piece in the electrical switch can directly cause the contact surface between the movable contact piece and the contact piece to be unstable, the resistance of the contact surface is increased, the current loss is increased, the heat productivity of the switch is increased, and the electric energy is wasted. The conductivity of the product is reduced, the reliability of the product is reduced, and more serious arc sparks can be generated to burn equipment, so that unnecessary waste is caused.
Disclosure of Invention
In order to solve above-mentioned contact piece aversion and directly lead to movable contact spring and contact piece contact surface unstability and aversion, increased current loss and switch calorific capacity, reduced the electric conductive property of product moreover, reduced the reliability of product, the more serious can produce the electric arc spark, burns out equipment, causes unnecessary extravagant problem, the utility model provides a do benefit to the contact piece limit structure who improves the reliability. The technical scheme is as follows:
the utility model provides a do benefit to contact piece limit structure who improves reliability, includes casing (1), static contact (2), movable contact (3), contact zone (101) have been arranged to casing (1), install static contact (2) on casing (1), static contact (2) contain contact site (201) and wiring portion (205), contact site (201) are located in contact zone (101), movable contact (3) can with static contact (2) are in contact or separation in contact zone (101), wiring portion (205) can be connected with external conductor.
The static contact (2) comprises a limiting part (202), the limiting part (202) is arranged outside the contact area (101), and the limiting part (202) and the contact part (201) are located in the same contact plane (P1). The limiting part (202) is simultaneously contacted with the shell 1 and the adjacent shell.
The static contact (2) comprises a connecting part (204), the connecting part (204) is not positioned in a contact plane (P1), and the connecting part (204) is not positioned in the same plane with the wiring part (205).
According to the utility model discloses a do benefit to contact piece limit structure who improves reliability, it is preferred: the limiting part (202) is directly connected with the contact part (201).
According to the utility model discloses a do benefit to contact piece limit structure who improves reliability, further preferred is: the limiting part (202) is not directly connected with the contact part (201).
According to the utility model discloses a do benefit to contact piece limit structure who improves reliability, further preferred is: the limiting part (202) is provided with a clamping foot (203) arranged on the shell clamping groove (103).
According to the utility model discloses a do benefit to contact piece limit structure who improves reliability, further preferred is: the contact area (101) is circular.
Compared with the prior art, the technical scheme has the advantages that: the contact piece contacts with the shell and the adjacent shell simultaneously through the limiting part, the contact piece is firmly limited on the static contact piece position, the limiting part and the contact surface do not need to be bent in the same plane, the phenomenon that the deviation is generated due to the fact that bending tolerance of the contact piece and production tolerance of the shell are accumulated is avoided, or the shell deforms to cause size change and the contact piece is not flexible, the relative shell with stable contact piece positions is made, the movable contact piece is static, the stable contact between the movable contact piece and the contact piece is guaranteed, contact resistance is prevented from being increased, electric sparks are avoided, and the reliability of a product is improved.
In summary, the electrical switch contact piece structure is provided with a limiting part which is simultaneously contacted with the shell and the adjacent shell and is positioned on the same plane with the contact part, so that the contact piece is stably installed on the shell. When the cable is installed or the electric switch is normally used, the contact piece can be stably kept static relative to the shell, the movable contact piece and the like, and displacement does not occur. The stable contact between the movable contact piece and the contact piece is ensured, the increase of contact resistance is avoided, the generation of electric sparks is avoided, and the reliability of the product is improved.
Drawings
Fig. 1 is a schematic view of the installation structure of the embodiment a of the contact piece limiting structure of the present invention, which is beneficial for improving reliability.
Fig. 2 is a schematic view of the static contact of embodiment a of the present invention.
Fig. 3 is a schematic view of a housing according to embodiment a of the present invention.
Fig. 4 is a schematic view of the installation structure of embodiment B of the present invention.
Fig. 5 is a schematic view of the static contact plate according to embodiment B of the present invention.
Fig. 6 is a schematic view of a housing according to embodiment B of the present invention.
In the figure: 1-a shell; 2-static contact piece; 3-moving contact piece.
Detailed Description
Next, a contact piece positioning structure advantageous for improving reliability according to the present invention will be described in further detail with reference to the drawings and embodiments of the present invention.
FIGS. 1-3 are schematic illustrations of example A.
As shown in fig. 1-3, a contact piece limiting structure beneficial to improving reliability comprises a shell 1, a static contact piece 2 and a movable contact piece 3, wherein the shell 1 comprises a contact area 101, and the contact area 101 of the shell is an area in a circle of a thick coil shown in the figure. The movable contact piece 3 is rotatable about the central axis Z1 to be brought into contact with or separated from the stationary contact piece 2. The movable contact piece 3 can be in contact with or separated from the stationary contact piece 2 in the contact region 101.
The static contact 2 comprises a contact part 201 and a limiting part 202, the limiting part 202 is arranged outside the contact region 101, the limiting part 202 and the contact part 201 are located in the same contact plane P1, the limiting part 202 is in contact with a limiting pin 102 of the shell 1, and when more than two shells are installed, the limiting part 202 is in contact with a limiting pin corresponding to an adjacent shell. The static contact 2 is thus confined to the process location.
The stationary contact 2 includes a connecting portion 204 and a wire connecting portion 205, and the connecting portion 204 is not located in the wiring plane P1 and is not located on the same plane as the wire connecting portion 205.
The stationary contact 2 is mounted on the housing 1, the contact portion 201 being arranged within the housing contact area 101 and the limiting portion being arranged outside the housing contact area 101.
The stopper portion 202 of embodiment a is directly connected to the contact portion 201.
The limiting part 202 is provided with a clamping foot 203 arranged on the shell clamping groove 103 to prevent the static contact from displacing in the plane A1.
FIGS. 4-6 are schematic diagrams of embodiment B.
As shown in fig. 4 to 6, the contact region 101B and the stationary contact limit leg 102B are arranged on the housing 1B, the limit portion 202B of the stationary contact 2B is arranged outside the contact region 101B, the limit portion 202B and the contact portion 201B of the stationary contact 2B are located in the same plane P1B, the limit portion 202B is in contact with the limit leg 102B of the housing 1B, and when more than two housings are mounted, the limit portion 202B is also in contact with the limit leg corresponding to the adjacent housing. The static contact 2B is thus confined to the process location.
The stationary contact 2B includes a connecting portion 204B and a wire connecting portion 205B, the connecting portion 204B is not located in the contact plane P1, and the connecting portion 204B is not located on the same plane as the wire connecting portion 205B.
The stopper portion 202B is not directly connected to the contact portion 201B, but connected to the contact portion 201B through a connecting portion 204B.
In conclusion, the limiting parts are arranged outside the contact area, are in the same plane with the contact parts and are in contact with the shell and the adjacent shell simultaneously, so that the contact piece is firmly limited at the process set position without being influenced by bending production tolerance of the contact piece or production tolerance and deformation of the shell. If the limiting part and the contact part are not in the same plane but are respectively positioned in two planes of an intersecting angle, the contact of the movable contact and the static contact is influenced because of accumulated production tolerance or shell deformation, so that the heating is increased, and serious or even arc sparks can be generated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A contact piece limiting structure beneficial to improving reliability comprises a shell (1), a static contact piece (2) and a movable contact piece (3), wherein a contact area (101) is arranged on the shell (1), the static contact piece (2) is installed on the shell (1), the static contact piece (2) comprises a contact part (201) and a wiring part (205), the contact part (201) is located in the contact area (101), the movable contact piece (3) can be in contact with or separated from the static contact piece (2) in the contact area (101), and the wiring part (205) can be connected with an external lead; the method is characterized in that: the static contact (2) comprises a limiting part (202), the limiting part (202) is arranged outside the contact area (101), and the limiting part (202) and the contact part (201) are positioned in the same contact plane (P1); the limiting part (202) is simultaneously contacted with the shell (1) and the adjacent shell; the static contact (2) comprises a connecting part (204), the connecting part (204) is not positioned in a contact plane (P1), and the connecting part (204) is not positioned in the same plane with the wiring part (205).
2. The contact piece limit structure facilitating reliability improvement according to claim 1, wherein: the limiting part (202) is directly connected with the contact part (201).
3. The contact piece limit structure facilitating reliability improvement according to claim 1, wherein: the limiting part (202) is not directly connected with the contact part (201).
4. A contact piece positioning structure facilitating reliability improvement according to claim 2 or claim 3, wherein: the limiting part (202) is provided with a clamping foot (203) arranged on the shell clamping groove (103).
5. The contact piece limit structure facilitating reliability improvement according to claim 4, wherein: the contact area (101) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921871692.1U CN211507409U (en) | 2019-11-01 | 2019-11-01 | Do benefit to contact piece limit structure who improves reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921871692.1U CN211507409U (en) | 2019-11-01 | 2019-11-01 | Do benefit to contact piece limit structure who improves reliability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211507409U true CN211507409U (en) | 2020-09-15 |
Family
ID=72408089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921871692.1U Active CN211507409U (en) | 2019-11-01 | 2019-11-01 | Do benefit to contact piece limit structure who improves reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211507409U (en) |
-
2019
- 2019-11-01 CN CN201921871692.1U patent/CN211507409U/en active Active
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