CN219832539U - Circuit breaker with isolation function mechanism - Google Patents
Circuit breaker with isolation function mechanism Download PDFInfo
- Publication number
- CN219832539U CN219832539U CN202321101052.9U CN202321101052U CN219832539U CN 219832539 U CN219832539 U CN 219832539U CN 202321101052 U CN202321101052 U CN 202321101052U CN 219832539 U CN219832539 U CN 219832539U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- circuit breaker
- blocking part
- support
- lower connecting
- 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.)
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Links
- 238000002955 isolation Methods 0.000 title claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000005452 bending Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A circuit breaker with isolation function mechanism. The handle can still normally rotate when the contact fusion welding of the current circuit breaker is mainly solved, the condition of electrified operation is likely to appear, and the problem of using safety is affected. The method is characterized in that: the transmission mechanism comprises a lower connecting rod (41), one end of the lower connecting rod is connected with the support, the handle comprises a support (22) hinged with the base, a first blocking part (411) is arranged on the lower connecting rod, a second blocking part (212) is arranged on the support, and the first blocking part is used for being in limit fit with the second blocking part and enabling the support to be non-rotatable to open when the rotating shaft is non-rotatable after the contact is welded. The utility model provides a breaker with an isolation function mechanism, which can prevent a false judgment condition from occurring by enabling a lower connecting rod limiting handle to be non-rotatable when a moving contact is welded, and is safer to use.
Description
Technical Field
The utility model relates to the field of molded case circuit breakers, in particular to a circuit breaker with an isolation function mechanism.
Background
The five-bar linkage of the traditional molded case circuit breaker is shown in figure 5 of the specification and consists of a contact support f, a lower bar g, an upper bar h, a jump buckle k, a lock catch m, an operating handle 1 and a breaking spring 2. In the illustrated closing position, the segment springs are stored energy, but g and h are in a straight position (dead point), point c is not moved, and ghf and the stand are in a stable state. When the manual pulling spring is pulled to be overlapped with the rod h and is the position with the maximum energy storage, after the manual pulling spring is pulled through the rod h, the point B moves leftwards to be separated from the dead zone, the contact support is quickly lifted up by the lower connecting rod, and the manual pulling spring rotates anticlockwise around the contact rotating point O1, so that the brake is opened. When the short circuit current causes the lock catch m to move, the point c becomes a movable point, the jump buckle k moves clockwise along O2, and therefore the lock catch becomes a 5-connecting rod, and the five-connecting rod has two degrees of freedom, so that the contact breaking is irrelevant to the position of the handle.
However, when the contact is welded, the non-rotatable circuit is always on, and the handle can still rotate normally, so that an operator can misjudge the state of the contact, and the situation of electrified operation is likely to occur, thereby affecting the use safety.
Disclosure of Invention
In order to overcome the defects of the background technology, the utility model provides a circuit breaker with an isolation function mechanism, which mainly solves the problems that when contacts of the existing circuit breaker are welded, a handle can still rotate normally, the condition of electrified operation is likely to occur, and the use safety is affected.
The technical scheme adopted by the utility model is as follows:
the utility model provides a take circuit breaker of isolation function mechanism, includes the base, be equipped with the handle that rotatable set up on the base, be equipped with the pivot that rotatable set up in the base, be equipped with the moving contact in the pivot, the handle passes through drive mechanism and drives the pivot rotates, drive mechanism includes the lower connecting rod, lower connecting rod one end with leg joint, the handle is including being used for with base articulated support, be equipped with first blocking part on the lower connecting rod, be equipped with the second blocking part on the support, first blocking part be used for when the pivot is unrotatable after the contact fusion welding with the spacing cooperation of second blocking part makes the support is unrotatable to divide the floodgate.
The second blocking part is a baffle plate arranged on the bracket.
The support comprises a side plate, and the baffle is formed by bending part of the side plate.
The first blocking part is a stop lever arranged on the lower connecting rod.
The transmission mechanism further comprises an upper connecting rod and a transmission shaft, the lower connecting rod is connected with the transmission shaft, the upper connecting rod is connected with the transmission shaft, an elastic piece is arranged on the handle, and the elastic piece is connected with the transmission shaft.
The elastic piece is a tension spring.
The rotating shafts are provided with a plurality of rotating shafts, and the rotating shafts are driven by the linkage rod.
The beneficial effects of the utility model are as follows: the utility model provides a breaker with an isolation function mechanism, which can prevent a false judgment condition from occurring by enabling a lower connecting rod limiting handle to be non-rotatable when a moving contact is welded, and is safer to use.
Drawings
Fig. 1 is a schematic partial perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic partial perspective view of a second embodiment of the present utility model.
Fig. 3 is a schematic partial perspective view of an embodiment of the present utility model.
Fig. 4 is a schematic partial perspective view of an embodiment of the present utility model.
Fig. 5 is a schematic diagram of the mechanical principle of the prior art.
Detailed Description
The utility model is further described below with reference to the accompanying drawings: as shown in the figure, the circuit breaker with the isolation function mechanism comprises a base 1, a handle 2 which is rotatably arranged is arranged on the base, a rotating shaft 3 which is rotatably arranged is arranged in the base, a moving contact 31 is arranged in the rotating shaft, the handle drives the rotating shaft to rotate through a transmission mechanism, the transmission mechanism comprises a lower connecting rod 41, one end of the lower connecting rod is connected with a support, the handle comprises a support 22 which is hinged with the base, a first blocking part 411 is arranged on the lower connecting rod, a second blocking part 212 is arranged on the support, and the first blocking part is used for being in limit fit with the second blocking part and enabling the support to be non-rotatably split after the contact is welded. How the drive mechanism drives the rotating shaft to rotate to the prior art can refer to the background art, and the difference is that after the contact fusion welding, the rotating shaft cannot rotate, so that a first blocking part on the lower connecting rod and a second blocking part on the support can be blocked, and the support can not rotate to a brake separating position under the action of the lower connecting rod due to the fact that the rotating shaft cannot rotate. A fixing bracket 220 can be arranged in the base, and the bottom of the bracket is hinged with the fixing bracket.
In this embodiment, as shown in the drawing, the second blocking portion is a baffle plate disposed on the support. The baffle may be rectangular or arc-shaped with grooves, etc.
In this embodiment, as shown in the figure, the bracket includes a side plate 221, and the baffle is formed by bending a portion of the side plate. The baffle and the side plate are integrally manufactured, the structure is simple, and the whole baffle can be perpendicular to the side plate.
In this embodiment, as shown in the drawing, the first blocking portion is a stop lever disposed on the lower link. Through pin and baffle matched with, simple structure, convenient to use.
In this embodiment, as shown in the figure, the transmission mechanism further includes an upper link 43 and a transmission shaft 44, the lower link is connected with the transmission shaft, the upper link is connected with the transmission shaft, and the handle is provided with an elastic member 23, and the elastic member is connected with the transmission shaft.
In this embodiment, as shown in the drawing, the elastic member is a tension spring.
In this embodiment, as shown in the figure, the rotating shafts are provided with a plurality of rotating shafts, the plurality of rotating shafts are driven by a linkage rod 6, the linkage rod is installed at the eccentric position of the rotating shaft, and one end of the connecting rod is sleeved outside the linkage rod.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.
Claims (7)
1. The utility model provides a take circuit breaker of isolating function mechanism, includes base (1), be equipped with handle (2) that rotatable set up on the base, be equipped with pivot (3) that rotatable set up in the base, be equipped with moving contact (31) in the pivot, the handle passes through drive mechanism drive pivot rotation, its characterized in that: the handle comprises a support (22) hinged with the base, the transmission mechanism comprises a lower connecting rod (41), one end of the lower connecting rod is connected with the support, a first blocking part (411) is arranged on the lower connecting rod, a second blocking part (212) is arranged on the support, and the first blocking part is used for being in limit fit with the second blocking part and enabling the support to be non-rotatable to open when the rotating shaft is non-rotatable after the contact is welded.
2. The circuit breaker with isolation function mechanism of claim 1, wherein: the second blocking part is a baffle plate arranged on the bracket.
3. The circuit breaker with isolation function mechanism of claim 2, wherein: the support comprises a side plate (221), and the baffle is formed by bending part of the side plate.
4. The circuit breaker with isolation function mechanism of claim 1, wherein: the first blocking part is a stop lever arranged on the lower connecting rod.
5. The circuit breaker with isolation function mechanism of claim 1, wherein: the transmission mechanism further comprises an upper connecting rod (43) and a transmission shaft (44), the lower connecting rod is connected with the transmission shaft, the upper connecting rod is connected with the transmission shaft, an elastic piece (23) is arranged on the handle, and the elastic piece is connected with the transmission shaft.
6. The circuit breaker with isolation function mechanism of claim 5, wherein: the elastic piece is a tension spring.
7. A circuit breaker with isolation function according to any of claims 1-6, characterized in that: the rotating shafts are provided with a plurality of rotating shafts, and the rotating shafts are driven by a linkage rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321101052.9U CN219832539U (en) | 2023-05-06 | 2023-05-06 | Circuit breaker with isolation function mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321101052.9U CN219832539U (en) | 2023-05-06 | 2023-05-06 | Circuit breaker with isolation function mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832539U true CN219832539U (en) | 2023-10-13 |
Family
ID=88275898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321101052.9U Active CN219832539U (en) | 2023-05-06 | 2023-05-06 | Circuit breaker with isolation function mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832539U (en) |
-
2023
- 2023-05-06 CN CN202321101052.9U patent/CN219832539U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |