Circuit breaker with locking structure
By designing locking mechanisms and warning plates for the shaft, worm gear, worm and vertical pole in the circuit breaker, the safety hazards of the circuit breaker cannot be locked are solved, ensuring the safety of circuit maintenance and reminding staff of the circuit status to avoid accidental electric shock.
Patent Information
- Application Number
- CN202421277937.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-06-06
AI Technical Summary
Most circuit breakers on the market cannot lock the falling split and closing gate, resulting in unexpected electric shock during circuit maintenance, posing safety hazards.
A circuit breaker with a locking structure is designed, including a locking mechanism of the rotating shaft, worm gear, worm and vertical rod. The worm and worm gear are driven to cooperate with the rotating shaft through the knob to drive the vertical rod to lock the opening and closing handle, and pass through No. 1 and No. 2 The warning board of the vertical board reminds the staff of the circuit status to avoid accidental closing or electric shock.
It effectively prevents uninformed staff from accidentally closing the closing handle, ensure the safety of circuit maintenance personnel, and avoid safety accidents through warning boards.
Smart Images
Figure CN222190604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker with a locking structure. Background Art
[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time.
[0003] When the circuit needs to be repaired, the circuit breaker needs to be dropped to keep the circuit breaker in the open state. This can prevent electricians from accidentally getting electric shock when repairing the circuit. However, most circuit breakers on the market cannot lock the dropped switches. If an uninformed staff closes the switch while the electrician is repairing the circuit, it may easily cause the electrician to get electric shock, posing a safety hazard. Utility Model Content
[0004] The purpose of the utility model is to provide a circuit breaker with a locking structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a circuit breaker with a locking structure, comprising a circuit breaker body, a wiring hole is provided on the circuit breaker body, a switch-on and switch-off handle is arranged on the circuit breaker body, a control box is fixedly installed on the outer wall of the circuit breaker body, and a locking mechanism for limiting the switch-on and switch-off handle is arranged inside the control box. By setting the locking mechanism, the switch-on and switch-off handle of the circuit breaker body can be prevented from being accidentally closed in the power-off state. The locking mechanism comprises:
[0006] A rotating shaft, the rotating shaft is rotatably connected to the inner wall of the control box, and a vertical pole is fixedly installed on the outer wall of the rotating shaft. The opening and closing handles after the opening of the switch can be locked by arranging the rotating shaft in conjunction with the vertical pole;
[0007] A worm gear, the worm gear is fixedly mounted on the outer wall of the rotating shaft;
[0008] A worm, one end of which is rotatably connected to the inner wall of the control box, and the other end of which passes through the control box and is fixedly mounted with a knob. The worm is meshed with the worm wheel, and the shaft can be driven to rotate by arranging the worm to cooperate with the worm wheel.
[0009] Preferably, an auxiliary mechanism is provided on the rotating shaft, by which the staff can be reminded of the current circuit status, the auxiliary mechanism includes a No. 1 vertical plate, the No. 1 vertical plate is fixedly mounted on the outer wall of the rotating shaft, and a maintenance warning plate is fixedly mounted on the outer wall of the No. 1 vertical plate, and by arranging the No. 1 vertical plate in conjunction with the maintenance warning plate, uninformed staff can be reminded that the current circuit is under maintenance.
[0010] Preferably, a No. 2 vertical plate is fixedly mounted on the outer wall of the rotating shaft, and a beware of electric shock warning plate is fixedly mounted on the outer wall of the No. 2 vertical plate. By arranging the No. 2 vertical plate in conjunction with the beware of electric shock warning plate, the staff can be reminded to be careful of electric shock.
[0011] Preferably, the first vertical plate is parallel to the vertical pole.
[0012] Preferably, the second vertical plate is perpendicular to the vertical pole.
[0013] Preferably, the worm is rotationally connected to a penetration point of the control box.
[0014] Compared with the prior art, the utility model provides a circuit breaker with a locking structure, which has the following beneficial effects:
[0015] 1. For the circuit breaker with a locking structure, when it is necessary to cut off the power of the circuit breaker body, the opening and closing handle is dropped, and then the worm is rotated by the knob to cooperate with the worm wheel and the rotating shaft to rotate the vertical rod to the top of the opening and closing handle. At this time, the opening and closing handle can be locked by the vertical rod to prevent uninformed staff from closing the opening and closing handle, thereby ensuring the safe operation of circuit maintenance personnel.
[0016] 2. For the circuit breaker with a locking structure, when the opening and closing handles are locked after the vertical pole is opened, the maintenance warning plate on the No. 1 vertical plate can be used to remind uninformed staff that the current circuit is under maintenance to avoid accidental closing. When the vertical pole is released from the lock of the opening and closing handles, the electric shock warning plate on the outer wall of the No. 2 vertical plate can be used to remind staff to be cautious in their work to avoid electric shock, thereby effectively preventing the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a cross-sectional structural diagram of the control box of the utility model;
[0019] Figure 3 It is a schematic diagram of the overall structure of the rotating shaft of the utility model;
[0020] Figure 4 For this utility model Figure 1 A is an enlarged structural diagram of FIG.
[0021] In the figure: 1. Circuit breaker body; 2. Wiring hole; 3. Opening and closing handle; 4. Control box; 5. Locking mechanism; 51. Rotating shaft; 52. Worm gear; 53. Worm; 54. Vertical pole; 55. Knob; 6. Auxiliary mechanism; 61. Vertical plate No. 1; 62. Maintenance warning plate; 63. Vertical plate No. 2; 64. Beware of electric shock warning plate. DETAILED DESCRIPTION
[0022] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a circuit breaker with a locking structure, comprising a circuit breaker body 1, a wiring hole 2 is opened on the circuit breaker body 1, a switching handle 3 is arranged on the circuit breaker body 1, a control box 4 is fixedly installed on the outer wall of the circuit breaker body 1, and a locking mechanism 5 for limiting the switching handle 3 is arranged inside the control box 4. By setting the locking mechanism 5, the switching handle 3 after the opening can be locked to prevent the switching handle 3 from being accidentally closed when the circuit breaker body 1 is in a power-off state.
[0023] The locking mechanism 5 comprises a rotating shaft 51, a worm wheel 52, a worm 53, a vertical rod 54 and a knob 55; the rotating shaft 51 is rotatably connected to the inner wall of the control box 4, and the vertical rod 54 is fixedly installed on the outer wall of the rotating shaft 51. When it is necessary to lock the opening and closing handle 3 after the opening, the rotating shaft 51 can be used to drive the vertical rod 54 to rotate downward to the top of the opening and closing handle 3 to prevent uninformed staff from closing the opening and closing handle 3. The worm wheel 52 is fixedly installed on the outer wall of the rotating shaft 51, one end of the worm 53 is rotatably connected to the inner wall of the control box 4, and the other end of the worm 53 passes through the control box 4 and is fixedly installed with a knob 55. The worm 53 is meshed with the worm wheel 52, and the worm 53 is rotatably connected to the penetration point of the control box 4. The worm 53 is rotated by the knob 55, and the rotating shaft 51 can be driven to rotate by the rotation of the worm 53 and the worm wheel 52 meshed therewith.
[0024] The above-mentioned rotating shaft 51 is provided with an auxiliary mechanism 6, by which the current circuit status of the staff can be reminded to avoid safety accidents. The auxiliary mechanism 6 includes a No. 1 vertical plate 61, a maintenance warning plate 62, a No. 2 vertical plate 63, and a beware of electric shock warning plate 64; the No. 1 vertical plate 61 is fixedly mounted on the outer wall of the rotating shaft 51, and the outer wall of the No. 1 vertical plate 61 is fixedly mounted with a maintenance warning plate 62. When the vertical rod 54 is rotated downward to the top of the opening and closing handle 3, the maintenance warning plate 62 on the outer wall of the No. 1 vertical plate 61 can be In order to remind uninformed staff that the current circuit is under maintenance to avoid accidental closing of the circuit, a No. 2 vertical plate 63 is fixedly installed on the outer wall of the rotating shaft 51, and a caution electric shock warning plate 64 is fixedly installed on the outer wall of the No. 2 vertical plate 63. When the vertical pole 54 is rotated upward and disengaged from the top of the opening and closing handle 3, the caution electric shock warning plate 64 on the outer wall of the No. 2 vertical plate 63 can be used to remind staff to be cautious in their work to avoid electric shock. The No. 1 vertical plate 61 is parallel to the vertical pole 54, and the No. 2 vertical plate 63 is perpendicular to the vertical pole 54.
[0025] Working principle: when it is necessary to cut off the power to the circuit breaker body 1, the opening and closing handle 3 is dropped, and then the worm 53 is rotated by the knob 55. The rotation of the worm 53 cooperates with the worm wheel 52 meshing therewith to drive the rotating shaft 51 to rotate, and the rotation of the rotating shaft 51 can drive the vertical rod 54 to rotate downward, and make the vertical rod 54 rotate to the top of the opening and closing handle 3 and be vertical to the control box 4. At this time, the vertical rod 54 can be used to limit the opening and closing handle 3 to prevent uninformed staff from closing the opening and closing handle 3, thereby ensuring the safe operation of circuit maintenance personnel.
[0026] When the vertical rod 54 rotates downward to the top of the opening and closing handle 3 and is perpendicular to the control box 4, the shaft 51 will drive the first vertical plate 61 to rotate out of the control box 4, so that the first vertical plate 61 and the control box 4 remain perpendicular and stand up outside the control box 4. At this time, the maintenance warning plate 62 on the outer wall of the first vertical plate 61 can be used to remind uninformed staff that the current circuit is under maintenance to avoid accidental closing. When the vertical rod 54 rotates upward to be separated from the top of the opening and closing handle 3 and is perpendicular to the control box 4, the shaft 51 will drive the first vertical plate 61 to rotate out of the control box 4, so that the first vertical plate 61 and the control box 4 remain perpendicular and stand up outside the control box 4. At this time, the maintenance warning plate 62 on the outer wall of the first vertical plate 61 can be used to remind uninformed staff that the current circuit is under maintenance to avoid accidental closing. When they are parallel, the vertical rod 54 is released from the lock of the opening and closing handle 3, and the opening and closing handle 3 can be closed. At the same time, the rotating shaft 51 will drive the No. 1 vertical plate 61 to rotate to the inside of the control box 4 for storage, and the rotating shaft 51 will drive the No. 2 vertical plate 63 to rotate out of the control box 4, so that the No. 2 vertical plate 63 and the control box 4 remain vertical and stand up outside the control box 4. At this time, the electric shock warning plate 64 on the outer wall of the No. 2 vertical plate 63 can be used to remind the staff to be cautious in their work to avoid electric shock.
[0027] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A circuit breaker with a locking structure, comprising a circuit breaker body (1), a wiring hole (2) being provided on the circuit breaker body (1), and a switch opening and closing handle (3) being provided on the circuit breaker body (1), characterized in that: A control box (4) is fixedly mounted on the outer wall of the circuit breaker body (1), and a locking mechanism (5) for limiting the opening and closing of the switch handle (3) is arranged inside the control box (4), wherein the locking mechanism (5) comprises: A rotating shaft (51), the rotating shaft (51) is rotatably connected to the inner wall of the control box (4), and a vertical rod (54) is fixedly mounted on the outer wall of the rotating shaft (51); A worm gear (52), wherein the worm gear (52) is fixedly mounted on the outer wall of the rotating shaft (51); A worm (53), one end of which is rotatably connected to the inner wall of the control box (4), and the other end of which passes through the control box (4) and is fixedly mounted with a knob (55), and the worm (53) is meshed with the worm wheel (52).
2. A circuit breaker with a locking structure according to claim 1, characterized in that: The rotating shaft (51) is provided with an auxiliary mechanism (6), and the auxiliary mechanism (6) comprises a first vertical plate (61), the first vertical plate (61) is fixedly mounted on the outer wall of the rotating shaft (51), and a maintenance warning plate (62) is fixedly mounted on the outer wall of the first vertical plate (61).
3. A circuit breaker with a locking structure according to claim 1, characterized in that: A second vertical plate (63) is fixedly mounted on the outer wall of the rotating shaft (51), and a beware of electric shock warning plate (64) is fixedly mounted on the outer wall of the second vertical plate (63).
4. A circuit breaker with a locking structure according to claim 2, characterized in that: The first vertical plate (61) is parallel to the vertical rod (54).
5. A circuit breaker with a locking structure according to claim 3, characterized in that: The second vertical plate (63) is perpendicular to the vertical rod (54).
6. A circuit breaker with a locking structure according to claim 1, characterized in that: The worm (53) is rotationally connected to a penetration point of the control box (4).