CN215680591U - Moving contact of universal circuit breaker - Google Patents
Moving contact of universal circuit breaker Download PDFInfo
- Publication number
- CN215680591U CN215680591U CN202121489139.9U CN202121489139U CN215680591U CN 215680591 U CN215680591 U CN 215680591U CN 202121489139 U CN202121489139 U CN 202121489139U CN 215680591 U CN215680591 U CN 215680591U
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- movable contact
- contact pieces
- long
- rotating shaft
- circuit breaker
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Abstract
A movable contact of a universal circuit breaker comprises at least two long movable contact pieces and a plurality of short movable contact pieces, a soft connection, a movable bus, a rotating shaft, a contact support and a contact support, wherein the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged on the rotating shaft side by side, two ends of the rotating shaft are arranged on the contact support, the lower ends of the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged with the upper end of the soft connection together, and the lower end of the soft connection is connected with the movable bus together, and the movable contact is characterized in that: the positions of the at least two long moving contact pieces above the rotating shaft are riveted together by rivets. The parts of the at least two long moving contact pieces above the rotating shaft are riveted together by the rivet, so that the at least two long moving contact pieces can be simultaneously contacted with the fixed contact 7 as a whole when the circuit breaker is switched on, and the service life of a contact system is prolonged.
Description
Technical Field
The utility model belongs to the technical field of circuit breakers, and particularly relates to a movable contact of a universal circuit breaker.
Background
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.
In the prior art, in order to improve the breaking performance of the circuit breaker, at least two long movable contacts and at least two short movable contacts are usually arranged on a movable contact in a movable contact, a main silver point and an arc silver point are arranged on the long movable contact, theoretically, the long movable contact can be firstly contacted with a fixed contact, at the moment, the contact force is larger and is absorbed by the long movable contact, but due to processing and assembling errors, the at least two long movable contacts can be sequentially contacted with the fixed contact, so that the at least two long movable contacts can be sequentially broken, the contact system fails, and the circuit breaker loses the breaking capacity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a movable contact of a universal circuit breaker aiming at the defect that a long movable contact piece is easy to break in the existing contact system to cause the failure of the contact system.
Technical scheme
In order to achieve the technical purpose, the utility model provides a movable contact of a universal circuit breaker, which comprises at least two long movable contact pieces and a plurality of short movable contact pieces, a flexible coupling, a movable bus, a rotating shaft, a contact support and a contact support, wherein the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged on the rotating shaft side by side, two ends of the rotating shaft are arranged on the contact support, the lower ends of the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged with the upper end of the flexible coupling together, and the lower end of the flexible coupling is connected with the movable bus together, and the movable contact of the universal circuit breaker is characterized in that: the positions of the at least two long moving contact pieces above the rotating shaft are riveted together by rivets.
Further, the rivet is located at a position close to the top end of the short movable contact.
Advantageous effects
According to the moving contact of the universal circuit breaker, the parts, above the rotating shaft, of the at least two long moving contacts are riveted together by using the rivet, so that the at least two long moving contacts can be simultaneously contacted with the fixed contact as a whole when the circuit breaker is switched on, and the service life of a contact system is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of a contact system in an embodiment of the present invention.
Fig. 2 is a schematic position diagram of a long movable contact piece and a plurality of short movable contact pieces in the embodiment of the utility model.
FIG. 3 is a schematic illustration of the rivet position in an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in the attached drawings 1 and 2, the movable contact of the universal circuit breaker comprises at least two long movable contact pieces 1 and a plurality of short movable contact pieces 2, a flexible coupling, a movable bus, a rotating shaft 3, a contact support 4 and a contact support 5, wherein the at least two long movable contact pieces 1 and the plurality of short movable contact pieces 2 are arranged on the rotating shaft 3 side by side, two ends of the rotating shaft 3 are arranged on the contact support 4, the lower ends of the at least two long movable contact pieces 1 and the plurality of short movable contact pieces 2 are arranged with the upper end of the flexible coupling (not shown in the attached drawings), the lower end of the flexible coupling is connected with the movable bus (not shown in the attached drawings), and the parts of the at least two long movable contact pieces 1 above the rotating shaft 3 are riveted together by a rivet 6 penetrating through a through hole 101 in the long movable contact pieces 1 in an interference manner. In this embodiment, the rivet 6 is preferably located near the top end of the short movable contact 2.
According to the moving contact of the universal circuit breaker provided by the embodiment of the utility model, the parts of at least two long moving contact pieces above the rotating shaft are riveted together by using the rivet, so that the at least two long moving contact pieces can be simultaneously contacted with the fixed contact 7 as a whole when the circuit breaker is switched on, and the service life of a contact system is prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A movable contact of a universal circuit breaker comprises at least two long movable contact pieces and a plurality of short movable contact pieces, a soft connection, a movable bus, a rotating shaft, a contact support and a contact support, wherein the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged on the rotating shaft side by side, two ends of the rotating shaft are arranged on the contact support, the lower ends of the at least two long movable contact pieces and the plurality of short movable contact pieces are arranged with the upper end of the soft connection together, and the lower end of the soft connection is connected with the movable bus together, and the movable contact is characterized in that: the positions of the at least two long moving contact pieces above the rotating shaft are riveted together by rivets.
2. The movable contact of a universal circuit breaker as claimed in claim 1, wherein: the rivet is located at a position close to the top end of the short movable contact piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489139.9U CN215680591U (en) | 2021-06-30 | 2021-06-30 | Moving contact of universal circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489139.9U CN215680591U (en) | 2021-06-30 | 2021-06-30 | Moving contact of universal circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215680591U true CN215680591U (en) | 2022-01-28 |
Family
ID=79978221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121489139.9U Active CN215680591U (en) | 2021-06-30 | 2021-06-30 | Moving contact of universal circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215680591U (en) |
-
2021
- 2021-06-30 CN CN202121489139.9U patent/CN215680591U/en active Active
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