CN114694985A - Contact structure - Google Patents
Contact structure Download PDFInfo
- Publication number
- CN114694985A CN114694985A CN202210373118.3A CN202210373118A CN114694985A CN 114694985 A CN114694985 A CN 114694985A CN 202210373118 A CN202210373118 A CN 202210373118A CN 114694985 A CN114694985 A CN 114694985A
- Authority
- CN
- China
- Prior art keywords
- contact
- movable contact
- movable
- support
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H2001/001—Contacts providing easy replacement of contacts
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- Contacts (AREA)
Abstract
A contact structure comprises a movable contact set and a contact support, wherein a plurality of movable contacts are rotatably arranged between two movable contact side plates by a rotating shaft, the two movable contact side plates are fixed on two sides of the contact support, a contact spring is arranged between the movable contact and the contact support, the contact support is provided with a spring mounting groove, and the spring is mounted in the spring mounting groove and connected with the movable contact; each movable contact piece is provided with two groups of springs, and a bowl-shaped gasket is arranged between the movable contact piece and the movable contact side plate and tightly pressed by a round nut.
Description
Technical Field
The invention relates to a contact structure.
Background
The circuit breaker is an important part of a distribution electrical appliance, is mainly used for an industrial low-voltage power system, and is used for connecting and disconnecting current in a power grid circuit and protecting lines and power supply equipment from damage caused by faults of overload, undervoltage, short circuit, single-phase grounding and the like. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, commonly called an air switch and also called a low-voltage circuit breaker, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.
The contact system structure is a key structure of a low-voltage electrical appliance product, and the change of the structural mode of the contact system directly influences the manufacturing cost and the complexity of the contact system process. On one hand, the parameter over-travel and the final pressure of the low-voltage electrical appliance contact mainly depend on whether the structural design of the contact system is reasonable or not; on the other hand, the manufacturability and the product performance of the structural design of the small-capacity to large-capacity product also depend on whether the structural design of the contact system is reasonable or not.
The traditional contact blades are usually fixed, other contact groups need to be replaced when the requirement changes, the adaptability is poor, the assembly stability between the contact blades of the traditional contact groups is poor, the pressure of the contact blades is uneven, and the stability is poor
Disclosure of Invention
The invention aims to provide a contact structure which can solve the problems of poor adaptability and poor assembly stability that the pressure of a primary contact blade is not uniform.
The above object of the present invention is achieved by the following scheme:
a contact structure comprises a movable contact set and a contact support, wherein a plurality of movable contacts are rotatably arranged between two movable contact side plates by a rotating shaft, the two movable contact side plates are fixed on two sides of the contact support, a contact spring is arranged between the movable contact and the contact support, the contact support is provided with a spring mounting groove, and the spring is mounted in the spring mounting groove and connected with the movable contact;
the movable contact is characterized in that each movable contact piece is provided with two groups of springs, a bowl-shaped gasket is arranged between the movable contact piece and the movable contact side plate, and the gasket is tightly pressed through a round nut.
Furthermore, the number of the bowl-shaped gaskets is a plurality, so that the movable contact pieces can be pressed.
Furthermore, an insulating sheet is arranged between the movable contact pieces.
Furthermore, the movable contact spring group is connected with a bus through flexible connection.
Furthermore, a plurality of the movable contact pieces are arranged side by side.
Furthermore, the contact support is fixedly mounted with the moving contact side plate through a screw.
Further, the contact part of the movable contact piece is provided with a movable contact.
The technical effects of the invention can be realized by the scheme as follows:
1. the contact blade of the contact structure can be increased or reduced according to the requirements, and the bowl-shaped gasket is arranged on the side surface of the contact blade and is pressed tightly through the round nut, so that the adaptability is improved.
2. In the contact structure, one contact blade is provided with two groups of pressure springs, so that the pressure is more uniform and stable, and the deflection of the contact in the opening and closing process is avoided.
Drawings
Fig. 1 is a schematic view of a contact structure of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a contact structure comprises a movable contact set and a contact support, wherein a plurality of movable contacts are rotatably arranged between two movable contact side plates by a rotating shaft 1, the two movable contact side plates are fixed at two sides of the contact support, a contact spring 2 is arranged between the movable contact and the contact support, the contact support is provided with a spring mounting groove, and the spring is mounted in the spring mounting groove and connected with the movable contact;
the movable contact is characterized in that each movable contact piece is provided with two groups of springs, a bowl-shaped gasket is arranged between the movable contact piece and the movable contact side plate, and the gasket is tightly pressed through a round nut.
Furthermore, the number of the bowl-shaped gaskets is a plurality, so that the movable contact pieces can be pressed.
Further, an insulating sheet is arranged between the movable contact pieces.
Furthermore, the movable contact spring group is connected with a bus through flexible connection.
Furthermore, a plurality of the movable contact pieces are arranged side by side.
Furthermore, the contact support is fixedly mounted with the moving contact side plate through a screw.
Further, the contact part of the movable contact piece is provided with a movable contact.
The contact blade of the contact structure can be increased or reduced according to requirements, and the bowl-shaped gasket is arranged on the side face of the contact blade and is pressed tightly through the round nut, so that the adaptability is improved.
In the contact structure, one contact blade is provided with two groups of pressure springs, so that the pressure is more uniform and stable, and the deflection of the contact in the opening and closing process is avoided.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. A contact structure comprises a movable contact set and a contact support, wherein a plurality of movable contacts are rotatably arranged between two movable contact side plates by a rotating shaft, the two movable contact side plates are fixed on two sides of the contact support, a contact spring is arranged between the movable contact and the contact support, the contact support is provided with a spring mounting groove, and the spring is mounted in the spring mounting groove and connected with the movable contact;
the movable contact is characterized in that each movable contact piece is provided with two groups of springs, a bowl-shaped gasket is arranged between the movable contact piece and the movable contact side plate, and the gasket is tightly pressed through a round nut.
2. The contact structure of claim 1, wherein the bowl-shaped pads are several in number so as to be able to press the movable contact.
3. The contact structure of claim 1 wherein an insulating sheet is disposed between the movable contacts.
4. The contact structure of claim 1 wherein the movable contact set is connected to a bus bar by a flexible connection.
5. The contact structure of claim 1 wherein a plurality of said movable contacts are arranged side by side.
6. The contact structure of claim 1, wherein the contact support is fixedly mounted to the movable contact side plate by a screw.
7. The contact structure of claim 1 wherein the contact portion of the movable contact piece has a movable contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210373118.3A CN114694985A (en) | 2022-04-11 | 2022-04-11 | Contact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210373118.3A CN114694985A (en) | 2022-04-11 | 2022-04-11 | Contact structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114694985A true CN114694985A (en) | 2022-07-01 |
Family
ID=82142228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210373118.3A Pending CN114694985A (en) | 2022-04-11 | 2022-04-11 | Contact structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114694985A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209344011U (en) * | 2018-12-29 | 2019-09-03 | 宁波奇乐电气集团有限公司 | A kind of moving contact of breaker structure-improved |
| CN110600345A (en) * | 2019-08-30 | 2019-12-20 | 德力西电气有限公司 | Moving contact of air circuit breaker |
| CN215680589U (en) * | 2021-06-03 | 2022-01-28 | 上海良信电器股份有限公司 | Moving contact system of universal circuit breaker |
| CN114141591A (en) * | 2020-09-04 | 2022-03-04 | 上海电器股份有限公司人民电器厂 | Contact system of low-voltage circuit breaker |
-
2022
- 2022-04-11 CN CN202210373118.3A patent/CN114694985A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209344011U (en) * | 2018-12-29 | 2019-09-03 | 宁波奇乐电气集团有限公司 | A kind of moving contact of breaker structure-improved |
| CN110600345A (en) * | 2019-08-30 | 2019-12-20 | 德力西电气有限公司 | Moving contact of air circuit breaker |
| CN114141591A (en) * | 2020-09-04 | 2022-03-04 | 上海电器股份有限公司人民电器厂 | Contact system of low-voltage circuit breaker |
| CN215680589U (en) * | 2021-06-03 | 2022-01-28 | 上海良信电器股份有限公司 | Moving contact system of universal circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220701 |