Integrated residual-current circuit breaker
By introducing a trip unit, transmission components, and indicator blocks into the residual current circuit breaker, the problem of not being able to distinguish between short circuit and leakage tripping causes in the existing technology is solved. This enables intuitive display of the tripping cause, reduces misjudgments, and lowers power consumption.
Patent Information
- Application Number
- CN202620033805.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2036-01-13
AI Technical Summary
Existing residual current circuit breakers cannot distinguish between short circuits and leakage currents causing tripping, making it difficult for users to intuitively understand the cause of the tripping.
An integrated residual current circuit breaker was designed. By setting a trip unit, a transmission component, and an indicator block inside the housing, the push rod of the trip unit drives the transmission component to rotate, which in turn moves the indicator block to display the tripping cause. The short circuit and leakage current states are distinguished by color. The combination of the push component and the reset component ensures the accurate display of the indicator block.
This enables a clear display of the tripping cause after a circuit breaker trips, reducing misjudgments, improving user experience, and lowering the power consumption of the trip unit.
Smart Images
Figure CN223898275U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker equipment technology, specifically an integrated residual current circuit breaker. Background Technology
[0002] Residual current circuit breakers (RCCBs) are widely used in industrial, commercial, and residential applications, primarily for short-circuit, overload, and residual current protection. Existing RCCBs typically include N-level and L-level modules, both of which operate simultaneously. However, this simultaneous operation makes it impossible to distinguish the cause of tripping. Therefore, it is necessary to incorporate a mechanism that can differentiate the reason for tripping. Utility Model Content
[0003] The purpose of this invention is to provide an integrated residual current circuit breaker to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated residual current circuit breaker, comprising a housing, wherein a trip unit, a first transmission component, and an indicator block are disposed within the housing; a moving contact is also disposed within the housing, and a lever is disposed on the outer side of the moving contact, and a second transmission component is mounted on the outer side of the lever; one end of the first transmission component is linked with the second transmission component, and the other end of the first transmission component is linked with the indicator block; when the trip unit is energized, the push rod of the trip unit pushes the first transmission component to rotate, and the first transmission component pushes the indicator block to move while simultaneously pushing the moving contact to complete the tripping action.
[0005] As a preferred technical solution of this utility model: the first transmission member rotates on the shaft pin rod provided on the housing through the provided shaft pin seat, and the upper end of the first transmission member is also provided with a latch, which is fastened to the lower end of the indicator block to prevent the indicator block from moving upward.
[0006] As a preferred technical solution of this utility model: the housing is further provided with a pusher, and the pusher causes the indicator block to always maintain an upward movement trend.
[0007] As a preferred technical solution of this utility model: the housing is further provided with a reset member. When the trip unit is de-energized, the reset member causes the first transmission member to reset so that the latch is fastened on the indicator block.
[0008] As a preferred technical solution of this utility model: the lower end of the first transmission member is also provided with a stop block. When the push rod of the trip device pushes the stop block to move, the other side of the stop block pushes the moving contact to rotate along the shaft pin.
[0009] As a preferred technical solution of this utility model: the stop block contacts the second transmission component through a provided arc surface.
[0010] As a preferred technical solution of this utility model: the trip unit is inclinedly disposed in the housing so that the push of the trip unit pushes the moving contact to rotate in the housing.
[0011] As a preferred technical solution of this utility model: the housing is further provided with a first contact and a second contact, and a button is provided to cause the first contact to contact the second contact to simulate a short circuit state.
[0012] As a preferred technical solution of this utility model: the first contact is a spring sheet, and the second contact is a torsion spring.
[0013] As a preferred technical solution of this utility model: the part of the button located inside the housing is fitted with a spring, and the spring causes the button to reset after the external force is removed.
[0014] The beneficial effects of this utility model using the above technical solution are as follows: When the trip unit's push rod extends outward, pushing the moving contact to complete the tripping action, it also pushes the indicator block towards the outer wall of the housing to remind the user that the trip was caused by leakage. In summary, when one end of the indicator block is exposed outside the housing, the reason for the circuit breaker tripping can be directly displayed to the user. If the indicator block does not extend outward after tripping, the tripping was caused by other reasons. Therefore, the reason for the tripping can be directly displayed to the user. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0016] Figure 2 This is a schematic diagram of the present invention with the indicator block in a locked state;
[0017] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;
[0018] Figure 4 This is a schematic diagram of the structure of the indicator block when it is in the unlocked state;
[0019] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle;
[0020] Figure 6 This is an exploded structural diagram of the moving contact and the second transmission component of this utility model;
[0021] Figure 7This is a color diagram of the disassembled moving contact and the second transmission component of this utility model;
[0022] Figure 8 This is a schematic diagram of the main structure of the first transmission component of this utility model;
[0023] Figure 9 This is a schematic diagram of the main structure of the second transmission component of this utility model.
[0024] In the diagram: 1. Housing; 2. Trip unit; 3. First transmission component; 30. Shaft pin seat; 31. Lock; 32. Stop block; 33. Arc surface; 4. Moving contact; 5. Indicator block; 6. Shaft pin rod; 7. Spring; 8. First contact; 9. Second contact; 10. Button; 11. Pushing component; 12. Reset component; 13. Clamping plate; 14. Second transmission component; 15. Lever; 16. Force-receiving part. Detailed Implementation
[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.
[0026] Please see Figure 1-9 This utility model provides an embodiment of an integrated residual current circuit breaker, comprising a housing 1, within which a trip unit 2, a first transmission component 3, and an indicator block 5 are disposed; the housing 1 also contains a moving contact 4, with a lever 15 on the outer side of the moving contact 4, and a second transmission component 14 mounted on the outer side of the lever 15; one end of the first transmission component 3 is linked to the second transmission component 14, and the other end of the first transmission component 3 is linked to the indicator block 5; when the trip unit 2 is energized, the push rod of the trip unit 2 pushes the first transmission component 3 to rotate, and the first transmission component 3 pushes the indicator block 5 to move while simultaneously pushing the moving contact 4 to complete the tripping action. Based on this, the device can intuitively display the tripping cause to the user.
[0027] Specifically, such as Figure 2 , Figure 3As shown, when the push rod of the trip unit 2 extends outward, pushing the moving contact 4 to complete the tripping action, it also pushes the indicator block 5 towards the outer wall of the housing 1 to remind the user that the trip was caused by leakage. If the indicator block 5 does not extend outward after the trip, the trip was caused by other reasons. For example, such as... Figure 1 , Figure 6 and Figure 7 As shown, the lever 15 of the moving contact 4 is equipped with two colors, one red and the other green. When the contact plate 13 inside the circuit breaker moves downward due to a short circuit, it pushes the second transmission component 14 to drive the moving contact 4 to complete the tripping action. At this time, the red part on the lever 15 is exposed, which can indicate to the user that the reason for the tripping is a short circuit trip.
[0028] like Figure 4 Figure 5 As shown: The first transmission member 3 rotates on the shaft pin 6 provided on the housing 1 via the provided shaft pin seat 30. The upper end of the first transmission member 3 is also provided with a latch 31, which is fastened to the lower end of the indicator block 5 to prevent the indicator block 5 from moving upward. Therefore, under normal conditions, by using the latch 31 to fasten to the protrusion at the bottom of the indicator block 5, the situation of the indicator block 5 automatically popping out can be prevented.
[0029] Meanwhile, since the housing 1 is also provided with a pusher 11, and the pusher 11 causes the indicator block 5 to always maintain an upward trend, the pusher 11 is preferably a torsion spring. Therefore, the torsion spring causes the first transmission member 3 to be unlocked, that is, rotated counterclockwise, and the latch 31 is separated from the protruding part of the indicator block 5. The pusher 11 causes the indicator block 5 to pop out quickly and maintain the state of the indicator block 5 after popping out, so as to reduce the occurrence of misjudgment.
[0030] Furthermore, since the housing 1 is also provided with a reset member 12, when the trip unit 2 is de-energized, the reset member 12 causes the first transmission member 3 to reset, so that the latch 31 is fastened on the indicator block 5; wherein, the reset member 12 is also preferably a torsion spring, and the torsion of the torsion spring causes the first transmission member 3 to reset, that is, the latch 31 is fastened on the protrusion of the indicator block 5, and can permanently fasten the indicator block 5.
[0031] See Figure 7 Figure 8 As shown, the lower end of the first transmission member 3 is also provided with a stop block 32. When the push rod of the trip unit 2 pushes the stop block 32 to move, the other side of the stop block 32 pushes the moving contact 4 to rotate along the shaft pin 6. Specifically, the stop block 32 contacts the second transmission member 14 and pushes the second transmission member 14 to rotate. At this time, the moving contact 4 can be driven to rotate counterclockwise along the shaft pin 6 to complete the tripping action.
[0032] Furthermore, the stop 32 contacts the second transmission member 14 through the arc surface 33. Therefore, the contact between the arc surface 33 and the second transmission member 14 can reduce the resistance of the stop 32 during power transmission. Specifically, the stop 32 extends to the outside of the housing 1, and the force-bearing part 16 of the second transmission member 14 extends to the inside of the housing 1, thus making the contact surface between the first transmission member 3 and the second transmission member 14 larger, so as to ensure the reliability of power transmission.
[0033] Based on the above plan, specifically as follows: Figure 2 , Figure 4 As shown, the trip unit 2 is inclinedly disposed inside the housing 1, so that the push of the trip unit 2 pushes the moving contact 4 to rotate inside the housing 1 at an angle downward. Since the trip unit 2 is inclined inside the housing 1, the trip unit 2 can push the contact 4 at an angle, lengthen the tripping lever arm, reduce the tripping force, and thus reduce the power consumption of the trip unit 2; wherein the trip unit 2 is an electromagnetic coil.
[0034] Based on the above scheme, see Figure 1 Figure 3 Figure 5 The housing 1 also includes a first contact 8 and a second contact 9. A button 10 is provided to cause the first contact 8 to contact the second contact 9, simulating a short circuit. Specifically, the first contact 8 is a spring, and the second contact 9 is a torsion spring. Furthermore, a spring 7 is fitted inside the housing 10, causing the button 10 to reset after the external force is removed. In summary, the button 10 can be used to push the first contact 8 and the second contact 9 to simulate a short circuit, facilitating equipment testing and ensuring that the equipment can quickly trip in the event of a short circuit.
[0035] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. An integrated residual current circuit breaker, characterized in that: Includes a housing (1), and the housing (1) is provided with a trip unit (2), a first transmission component (3) and an indicator block (5); The housing (1) is also provided with a movable contact (4), and a lever (15) is provided on the outside of the movable contact (4), and a second transmission component (14) is installed on the outside of the lever (15). One end of the first transmission member (3) is linked with the second transmission member (14), and the other end of the first transmission member (3) is linked with the indicator block (5); When the trip unit (2) is energized, the push rod of the trip unit (2) pushes the first transmission member (3) to rotate. The first transmission member (3) pushes the indicator block (5) to move while also pushing the moving contact (4) to complete the tripping action.
2. The integrated residual current circuit breaker according to claim 1, characterized in that: The first transmission member (3) rotates on the shaft pin (6) provided on the housing (1) through the provided shaft pin seat (30). The upper end of the first transmission member (3) is also provided with a latch (31), and the latch (31) is fastened to the lower end of the indicator block (5) to prevent the indicator block (5) from moving upward.
3. The integrated residual current circuit breaker according to claim 2, characterized in that: The housing (1) is also provided with a pusher (11), and the pusher (11) causes the indicator block (5) to always maintain an upward trend.
4. The integrated residual current circuit breaker according to claim 2, characterized in that: The housing (1) is also provided with a reset member (12). When the trip unit (2) is de-energized, the reset member (12) causes the first transmission member (3) to reset so that the latch (31) is fastened to the indicator block (5).
5. The integrated residual current circuit breaker according to claim 2, characterized in that: The lower end of the first transmission member (3) is also provided with a stop (32). When the push rod of the trip unit (2) pushes the stop (32) to move, the other side of the stop (32) pushes the moving contact (4) to rotate along the shaft pin (6).
6. The integrated residual current circuit breaker according to claim 5, characterized in that: The stop (32) contacts the second transmission member (14) through the arc surface (33).
7. An integrated residual current circuit breaker according to any one of claims 1-6, characterized in that: The trip unit (2) is tilted inside the housing (1) so that the push of the trip unit (2) pushes the moving contact (4) to rotate inside the housing (1) at an angle downward.
8. An integrated residual current circuit breaker according to any one of claims 1-6, characterized in that: The housing (1) is also provided with a first contact (8) and a second contact (9), and the first contact (8) and the second contact (9) are brought into contact by a button (10) to simulate a short circuit.
9. The integrated residual current circuit breaker according to claim 8, characterized in that: The first contact (8) is a spring, and the second contact (9) is a torsion spring.
10. An integrated residual current circuit breaker according to claim 9, characterized in that: The part of the button (10) located inside the housing (1) is fitted with a spring (7), and the spring (7) causes the button (10) to reset after the external force is removed.