CN211578670U - Low-voltage circuit breaker - Google Patents
Low-voltage circuit breaker Download PDFInfo
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- CN211578670U CN211578670U CN202020355889.6U CN202020355889U CN211578670U CN 211578670 U CN211578670 U CN 211578670U CN 202020355889 U CN202020355889 U CN 202020355889U CN 211578670 U CN211578670 U CN 211578670U
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- circuit breaker
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- indicating
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- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000003068 static effect Effects 0.000 claims abstract description 27
- 238000005299 abrasion Methods 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model is suitable for a circuit breaker technical field. Provided is a low-voltage circuit breaker comprising: a housing; the circuit breaker operating mechanism comprises a fixed contact arranged in a shell, a contact supporting piece rotationally arranged in the shell and a moving contact fixed on the contact supporting piece and contacted with or separated from the fixed contact; wear indication mechanism, wear indication mechanism includes: a wear indicating lever rotatably coupled to the housing; the transmission rod is rotatably connected to the shell, the contact supporting piece can drive the transmission rod to rotate when the moving contact and the static contact are abraded, and the transmission rod drives the abrasion indicating rod to move to a corresponding position. The utility model provides a low voltage circuit breaker convenience of customers judges the degree of wear between the contact, and convenience of customers in time changes the circuit breaker, avoids having the potential safety hazard because of the contact wearing and tearing.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, especially, relate to a low-voltage circuit breaker.
Background
The low-voltage circuit breaker is mainly used in various places such as industry, commerce, civil residence and the like, and plays a role in protecting a line from overload. When the low-voltage circuit breaker is used for cutting off fault current to protect a load circuit or load equipment, irreversible contact damage can be caused to a contact system of the circuit breaker, the contact overtravel caused by electrical wear between a moving contact and a static contact is obviously reduced, and once the moving contact or the static contact is worn to a certain degree and the circuit breaker is not updated timely, certain potential safety hazard can exist.
In the prior art, because the low-voltage circuit breaker is not provided with a corresponding wear indication mechanism, when the low-voltage circuit breaker is worn between a moving contact and a static contact in the use process, a user cannot judge the wear condition of the contact, the user is inconvenient to replace the circuit breaker in time, and certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a low-voltage circuit breaker aims at solving prior art's low-voltage circuit breaker in the use, and the user can't judge the contact wearing and tearing condition, and inconvenient user in time changes the circuit breaker, has the problem of certain potential safety hazard.
The utility model discloses a realize like this, provide a low voltage circuit breaker, include:
a housing;
the circuit breaker operating mechanism comprises a fixed contact arranged in the shell, a contact supporting piece rotationally arranged in the shell, and a moving contact which is fixed on the contact supporting piece and is contacted with or separated from the fixed contact;
a wear indication mechanism, the wear indication mechanism comprising:
a wear indicating lever rotatably coupled to the housing;
the contact supporting piece can drive the transmission rod to rotate when the moving contact and the static contact are abraded, and the transmission rod drives the abrasion indicating rod to move to a corresponding position.
Preferably, the wear indication mechanism includes a return spring connecting the housing and the wear indication rod.
Preferably, the shell is provided with an observation hole, one end of the wear indication rod is provided with an indication end, and the indication end extends into the observation hole and can rotate in the observation hole.
Preferably, the surface of the housing is provided with wear indication scales which are distributed along the movement direction of the indication end and are used for indicating the wear amount between the movable contact and the fixed contact.
Preferably, the inner wall of the observation hole is provided with an indication initial surface and an indication terminal surface opposite to the indication initial surface, and the indication end moves between the indication initial surface and the indication terminal surface.
Preferably, the transmission rod and the contact support are arranged at intervals; when the moving contact and the fixed contact are worn and the circuit breaker operating mechanism is switched on, the contact supporting piece is in contact with the transmission rod and drives the transmission rod to rotate.
Preferably, the contact support is provided with a first driving column arranged at an interval with the transmission rod, and the contact support drives the transmission rod to rotate through the first driving column.
Preferably, the transmission rod is provided with a second driving column in butt fit with the wear indication rod, and the transmission rod drives the wear indication rod to rotate through the second driving column.
Preferably, the low-voltage circuit breaker further comprises a transparent observation cover covering the observation hole.
Preferably, the shell is provided with a suspension column, the wear indication rod is provided with a connecting column, one end of the reset spring is suspended on the suspension column, and the other end of the reset spring is fixed on the connecting column.
The utility model provides a low voltage circuit breaker is through setting up wearing and tearing pilot rod and transfer line, after low voltage circuit breaker's moving contact and static contact wearing and tearing, circuit breaker operating device is when closing a floodgate, contact supporting member can drive the transfer line and rotate, and the transfer line drives the wearing and tearing pilot rod and moves to corresponding position in order to instruct the wearing and tearing condition between moving contact and the static contact, the user can be according to wearing and tearing pilot rod motion to corresponding position judgement degree of wear between the contact, convenience of customers in time changes the circuit breaker, avoid there being the potential safety hazard because of contact wearing and tearing.
Drawings
Fig. 1 is a schematic structural diagram of a low-voltage circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a low-voltage circuit breaker according to an embodiment of the present invention in a closing state after a contact is worn;
fig. 3 is a schematic structural diagram of the low-voltage circuit breaker provided by the embodiment of the present invention in an opening state;
fig. 4 is a schematic structural diagram of another view angle of the low-voltage circuit breaker according to the embodiment of the present invention;
fig. 5 is an enlarged view taken along a part a in fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model discloses low voltage circuit breaker is through setting up wearing and tearing indicator and transfer line, after low voltage circuit breaker's moving contact and static contact wearing and tearing, circuit breaker operating device is when closing a floodgate, contact supporting member can drive the transfer line and rotate, and the transfer line drives wearing and tearing indicator and moves and to corresponding the position and in order to instruct to appear wearing and tearing between moving contact and the static contact, the user can be according to wearing and tearing indicator motion to corresponding the position and judge the degree of wear between the contact, convenience of customers in time changes the circuit breaker, avoid having the potential safety hazard because of contact wearing and tearing.
Referring to fig. 1 and 2, an embodiment of the present invention provides a low voltage circuit breaker, including: a housing 1; the circuit breaker operating mechanism comprises a fixed contact 21 arranged in the shell 1, a contact support 22 rotatably arranged in the shell 1, and a movable contact 23 fixed on the contact support 22 and contacted with or separated from the fixed contact 21; and a wear indication mechanism.
The wear indication mechanism includes: a wear indication lever 31 rotatably coupled to the housing 1; the transmission rod 33 is rotatably connected to the housing 1, the contact support 22 can drive the transmission rod 33 to rotate when the movable contact 23 and the stationary contact 21 are worn, and the transmission rod 33 drives the wear indication rod 31 to move to the corresponding position.
Referring to fig. 1 to fig. 3, in the embodiment of the present invention, the low-voltage circuit breaker is provided with a wear indication rod 31 rotatably connected to the housing 1 and a transmission rod 33 rotatably connected to the housing 1, when there is no wear between the moving contact 23 and the static contact 21, and when the circuit breaker operating mechanism is switched on or switched off, the transmission rod 33 is not affected by the acting force of the contact support 22, and at this time, the wear indication rod 31 is located at an initial position; when the moving contact 23 and the fixed contact 21 are worn, and the breaker operating mechanism is switched on, the contact support 22 drives the transmission rod 33 to rotate, the transmission rod 33 drives the wear indication rod 31 to move to the corresponding position to indicate the wear condition between the moving contact 23 and the fixed contact 21, a user can judge that the moving contact 23 and the fixed contact 21 are worn according to the fact that the wear indication rod 31 moves to the corresponding position, meanwhile, the wear degree of the contact is judged according to the specific position to which the wear indication rod 31 moves, the user can conveniently and timely replace the breaker, and potential safety hazards caused by the wear of the contact are avoided.
The embodiment of the utility model provides an in, wearing and tearing can appear wearing and tearing or only the static contact 21 appears wearing and tearing for only moving contact 23 between moving contact 23 and the static contact 21, also can be that wearing and tearing appear simultaneously in moving contact 23 and static contact 21.
In the embodiment of the present invention, the wear indication mechanism further includes a return spring 32 connecting the housing 1 and the wear indication rod 31. When there is no wear between the moving contact 23 and the static contact 21, and the circuit breaker operating mechanism is closing, the contact support 22 drives the transmission rod 33 to rotate, the transmission rod 33 drives the wear indication rod 31 to move to the corresponding position, and at this time, the wear indication rod 31 overcomes the elastic force of the return spring 32 to rotate. When the circuit breaker operating mechanism is in opening, the contact support 22 rotates reversely and drives the moving contact 23 to separate from the fixed contact 21, and the wear indication rod 31 can restore to the initial position under the action of the return spring 32. The return of the wear indicating rod 31 is facilitated by the provision of the return spring 32.
The embodiment of the utility model provides an in, the shape of wearing and tearing indicator lever 31 and transfer line 33 is unlimited, and wearing and tearing indicator lever 31 and transfer line 33 constitute link mechanism to enlarge the wearing and tearing volume between moving contact 23 and the static contact 21, appear less wearing and tearing volume between moving contact 23 and the static contact 21 and can obtain great wearing and tearing indicator lever 31's displacement, convenience of customers in time observes the wearing and tearing volume between moving contact 23 and the static contact 21.
Referring to fig. 4-5, as an embodiment of the present invention, the wear indication rod 31 is provided with a first rotation shaft 311, the transmission rod 33 is provided with a second rotation shaft 331, and the first rotation shaft 311 and the second rotation shaft 331 are respectively engaged with the shaft holes of the housing 1 to form a rotating connection.
Wherein the housing 1 is provided with hole sites to be respectively engaged with the first and second rotation shafts 311 and 331. The wear indication rod 31 and the transmission rod 33 are respectively matched with hole positions on the shell 1 through the rotating shaft to form rotary connection, so that the wear indication rod 31 and the transmission rod 33 are convenient to mount.
Referring again to fig. 1-3, as an embodiment of the present invention, the housing 1 is provided with a viewing hole 11, one end of the wear indication rod 31 is provided with an indication end 312, and the indication end 312 extends into the viewing hole 11 and can rotate in the viewing hole 11.
In this embodiment, after the circuit breaker operating mechanism is switched on, a user can judge the degree of wear between the moving contact 23 and the static contact 21 by observing the position of the indicating end 312 in the observation hole 11; meanwhile, the observation hole 11 also has a limiting function on the indicating end 312.
As an embodiment of the present invention, the surface of the housing 1 is provided with a wear indication scale distributed along the movement direction of the indication end 312 and used for indicating the wear amount between the movable contact 23 and the fixed contact 21. Wherein, the wear indication scale is arranged at one side of the observation hole 11. The indicating end 312 moves to the graduation line corresponding to the wear indication graduation, i.e. represents the amount of wear between the movable contact 23 and the fixed contact 21 at this time. The surface of the shell 1 is provided with the wear indication scale, so that a user can accurately know the specific wear amount between the movable contact 23 and the fixed contact 21.
As an embodiment of the present invention, in order to observe the wear level of the wear amount more intuitively, the surface of the housing 1 is further provided with a color mark area which is distributed along the wear indication scale and corresponds to the set wear amount, respectively. If the positions corresponding to the abrasion loss of 0.04-0.5 mm are marked with green, the positions corresponding to the abrasion loss of 0.5-1 mm are marked with yellow, and the positions corresponding to the abrasion loss of 1-1.5 mm are marked with red. When the indication end 312 rotates to the position of the red marked area, it represents that the moving contact 23 and the static contact 21 are seriously worn, and the circuit breaker needs to be replaced at this time.
As an embodiment of the present invention, the inner wall of the observation hole 11 is provided with an initial indicating surface 111 and an end indicating surface 112 opposite to the initial indicating surface 111, and the indicating end 312 is movable between the initial indicating surface 111 and the end indicating surface 112.
In this embodiment, when the moving contact 23 and the fixed contact 21 are not worn, the indication end 312 abuts against the indication initial surface 111. When the wear amount between the movable contact 23 and the fixed contact 21 gradually increases and the circuit breaker operating mechanism is switched on, the indicating end 312 moves from the indicating initial surface 111 to the indicating terminal surface 112. When the indicating end 312 contacts the indicating terminal surface 112, which represents that the abrasion amount between the movable contact 23 and the fixed contact 21 has reached the limit value, the circuit breaker needs to be replaced.
As an embodiment of the present invention, the transmission rod 33 is disposed at a distance from the contact support 22; when the contact support 22 is worn between the movable contact 23 and the fixed contact 21 and the circuit breaker operating mechanism is closed, the contact support 22 contacts the transmission rod 33 and drives the transmission rod 33 to rotate. In addition, the transmission rod 33 can be set to just contact with the contact support 22, but there is no force between the transmission rod 33 and the contact support 22, and only when the moving contact 23 and the static contact 21 are worn, the contact support 22 applies force to the transmission rod 33 and drives the transmission rod 33 to rotate.
In this embodiment, when the moving contact 23 and the static contact 21 are not worn, the transmission rod 33 and the contact support 22 keep an interval, and at this time, the transmission rod 33 is not subjected to the acting force of the contact support 22; when the moving contact 23 and the fixed contact 21 are worn, and the circuit breaker operating mechanism is switched on, the transmission rod 33 contacts the contact support 22 and drives the transmission rod 33 to rotate by a certain angle, so as to drive the indicating end 312 to move from the indicating initial surface 111 to the indicating terminal surface 112 by a corresponding distance to indicate that the moving contact 23 and the fixed contact 21 are worn.
As an embodiment of the present invention, the contact support 22 is provided with a first driving post 221 spaced apart from the transmission rod 33, and the contact support 22 rotates through the transmission rod 33 of the first driving post 221.
As shown in fig. 5, in the present embodiment, when there is no wear between the movable contact 23 and the fixed contact 21, the first driving column 221 and the transmission rod 33 are spaced apart, and at this time, the transmission rod 33 is not subjected to the acting force of the first driving column 221; when the moving contact 23 and the fixed contact 21 are worn, and after the circuit breaker operating mechanism is switched on, the first driving column 221 contacts with the transmission rod 33 and drives the transmission rod 33 to rotate, and the transmission rod 33 drives the indicating end 312 of the wear indicating rod 31 to rotate by a corresponding angle, so as to indicate that the moving contact 23 and the fixed contact 21 are worn.
As an embodiment of the present invention, the transmission rod 33 is provided with a second driving post 332 abutted to the wear indication rod 31, and the transmission rod 33 drives the wear indication rod 31 to rotate through the second driving post 332. The transmission rod 33 is in butt fit with the wear indication rod 31 through the second driving column 332, transmission connection of the transmission rod 33 and the wear indication rod 31 is achieved, the transmission rod 33 and the wear indication rod 31 do not need to be connected in a hinged mode, and installation of the transmission rod 33 and the wear indication rod 31 is facilitated.
When the breaker operating mechanism is switched on after the moving contact 23 and the fixed contact 21 are worn, the first driving column 221 contacts with the transmission rod 33 and drives the transmission rod 33 to rotate by a certain angle, the transmission rod 33 drives the wear indication rod 31 to rotate through the second driving column 332, and the indication end 312 moves to a corresponding position to indicate the wear condition between the moving contact 23 and the fixed contact 21.
As an embodiment of the utility model, low voltage circuit breaker still establishes the transparent observation lid 4 of observing hole 11 including the lid to play the safety protection effect, and do not influence the instruction function of instructing end 312.
As an embodiment of the utility model, casing 1 is equipped with and hangs post 12, is equipped with spliced pole 313 on the wear indication pole 31, and reset spring 32 one end is hung in hanging post 12, and the other end is fixed in spliced pole 313. The installation mode of the return spring 32 is simple, and the installation of the return spring 32 is convenient.
The embodiment of the utility model provides an in, circuit breaker operating device 2 still includes handle 24, connecting rod 25, main lever 26 and torsional spring 27, and handle 24 rotates and sets up in casing 1, and main lever 26 rotates and sets up in casing 1, and handle 24 and main lever 26 are connected to connecting rod 25, and moving contact supporting member 22 is fixed in main lever 26 and rotates with main lever 26 is synchronous, and torsional spring 27 is fixed in moving contact supporting member 22 and with casing 1 butt.
As shown in fig. 1, when the moving contact 23 and the stationary contact 21 are not worn, and when the circuit breaker operating mechanism is switched on, the handle 24 rotates clockwise to the position shown in fig. 1, the handle 24 drives the main lever 26 and the contact support 22 through the connecting rod 25 to overcome the elastic force of the torsion spring 27 and rotate clockwise until the moving contact 23 contacts the stationary contact 21, at this time, an interval is maintained between the contact support 22 and the transmission rod 33, and the transmission rod 33 is not affected by the acting force of the contact support 22.
As shown in fig. 2, when the moving contact 23 and the fixed contact 21 are worn, and when the circuit breaker operating mechanism is switched on, the handle 24 rotates clockwise to the position shown in fig. 2, the handle 24 drives the main lever 26 and the contact support 22 to overcome the elastic force of the torsion spring 27 and rotate counterclockwise at the same time through the connecting rod 25, after the handle 24 rotates to the position, because the moving contact 23 and the fixed contact 21 are worn, the moving contact 23 continues to rotate clockwise to contact with the fixed contact 21 under the action of the torsion spring 27, in this process, the contact support 22 contacts with the transmission rod 33 and drives the transmission rod 33 to rotate counterclockwise, the transmission rod 33 rotates counterclockwise and drives the wear indication rod 31 to rotate clockwise, so that the initial position of the indication end 312 of the wear indication rod 31 in the observation hole 11 moves to the corresponding position to indicate that the moving contact 23 and the fixed contact 21 are worn. As shown in fig. 3, when the handle 24 of the circuit breaker operating mechanism is opened, the handle 24 rotates counterclockwise to the position shown in fig. 3, the handle 24 drives the contact support 22 and the main lever 26 to rotate counterclockwise until the movable contact 23 is separated from the fixed contact 21, the contact support 22 is separated from the transmission rod 33, so that the transmission rod 33 is free from the acting force of the contact support 22, at this time, the wear indication rod 31 rotates counterclockwise to the initial position under the action of the return spring 32, and the wear indication rod 31 drives the transmission rod 33 to rotate clockwise to the initial position no matter whether the movable contact 23 and the fixed contact 21 are worn or not.
The embodiment of the utility model provides a low voltage circuit breaker is through setting up wearing and tearing indicator and transfer line, after wearing and tearing between low voltage circuit breaker's moving contact and the static contact, circuit breaker operating device is when closing a floodgate, contact support rotates and drives moving contact and static contact, contact support drive transfer line rotates, the transfer line drives the wearing and tearing indicator and moves the wearing and tearing condition that corresponds the position in order to instruct between moving contact and the static contact, the user can move the degree of wear and tearing between corresponding position judgement moving contact and the static contact according to the wearing and tearing indicator, convenience of customers in time changes the circuit breaker, avoid having the potential safety hazard because of contact wearing and tearing.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A low-voltage circuit breaker, characterized in that it comprises:
a housing;
the circuit breaker operating mechanism comprises a fixed contact arranged in the shell, a contact supporting piece rotationally arranged in the shell, and a moving contact which is fixed on the contact supporting piece and is contacted with or separated from the fixed contact;
a wear indication mechanism, the wear indication mechanism comprising:
a wear indicating lever rotatably coupled to the housing;
the contact supporting piece can drive the transmission rod to rotate when the moving contact and the static contact are abraded, and the transmission rod drives the abrasion indicating rod to move to a corresponding position.
2. Low voltage circuit breaker as claimed in claim 1, characterized in that said wear-indicating mechanism further comprises a return spring connecting said housing and said wear-indicating rod.
3. Low voltage circuit breaker as claimed in claim 1, characterized in that the housing is provided with a viewing opening, and in that one end of the wear indicator rod is provided with an indicator end which extends into the viewing opening and can rotate therein.
4. The low-voltage circuit breaker as claimed in claim 3, characterized in that the surface of said casing is provided with wear-indicating scales distributed along the direction of movement of said indicating end and used for indicating the amount of wear between said moving contact and said static contact.
5. Low voltage circuit breaker as claimed in claim 3 or 4, characterized in that the inner wall of the viewing aperture is provided with an initial indicating face and an end indicating face opposite the initial indicating face, the indicating end being movable between the initial indicating face and the end indicating face.
6. Low voltage circuit breaker as claimed in claim 1, characterized in that the transmission rod is arranged spaced apart from the contact support; when the moving contact and the fixed contact are worn and the circuit breaker operating mechanism is switched on, the contact supporting piece is in contact with the transmission rod and drives the transmission rod to rotate.
7. Low voltage circuit breaker as claimed in claim 1 or 6, characterized in that the contact support is provided with a first drive stud arranged at a distance from the drive rod, via which the contact support drives the drive rod in rotation.
8. Low voltage circuit breaker as claimed in claim 1, characterized in that the transmission rod is provided with a second drive stud which cooperates in abutment with the wear indicator rod, the transmission rod driving the wear indicator rod in rotation by means of the second drive stud.
9. Low voltage circuit breaker as claimed in claim 3, characterized in that it further comprises a transparent viewing cover covering said viewing aperture.
10. The low-voltage circuit breaker as claimed in claim 2, characterized in that said casing is provided with a suspension post, said wear indicator rod is provided with a connection post, one end of said return spring is suspended from said suspension post, and the other end is fixed to said connection post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020355889.6U CN211578670U (en) | 2020-03-19 | 2020-03-19 | Low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020355889.6U CN211578670U (en) | 2020-03-19 | 2020-03-19 | Low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211578670U true CN211578670U (en) | 2020-09-25 |
Family
ID=72527106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020355889.6U Active CN211578670U (en) | 2020-03-19 | 2020-03-19 | Low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211578670U (en) |
-
2020
- 2020-03-19 CN CN202020355889.6U patent/CN211578670U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: 315333 Kuang Yan Zhen Long Ge Cun, Cixi City, Ningbo City, Zhejiang Province Patentee after: Ningbo bull Low Voltage Electric Co.,Ltd. Address before: 315314 East District of Industrial Park, Cixi, Ningbo, Zhejiang Patentee before: GONGNIU GROUP Co.,Ltd. |