A circuit breaker

Abstract

The utility model belongs to the technical field of circuit breaker, including circuit breaker body still includes control assembly, the side surface of control assembly with the side surface of circuit breaker body is inlaying, control assembly includes casing, drive mechanism, transmission gear set and linkage mechanism, drive mechanism includes the motor fixed in the casing, the output fixed with worm of motor, the worm is engaged with transmission gear set, transmission gear set rotatory mounting in casing, linkage mechanism includes the tripping lever, the tripping lever is Y shape structure, one end of tripping lever upper portion rotatory mounting in casing, the other end fixed with linkage column of tripping lever upper portion, the through slot for avoiding linkage column is set up on casing, the side surface of circuit breaker body is provided with the tripping unit for the linkage of linkage column, the lower part of tripping lever projects to one side and forms the click, the click can be with transmission gear set clamping.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker. Background Technology

[0002] Circuit breakers are an important part of the electrical industry. When the circuit is working normally, the circuit breaker can close and open the circuit. When the circuit malfunctions, the circuit breaker can automatically disconnect the circuit. Existing circuit breakers are difficult to achieve both manual opening and closing and automatic opening and closing at the same time.

[0003] Patent application WO2017025048A1 discloses an automatic opening and closing miniature circuit breaker, including a circuit breaker body and an automatic opening and closing drive mechanism. The circuit breaker body includes one to four circuit breakers; each circuit breaker includes a molded housing, an opening and closing handle, and an operating mechanism; each opening and closing handle has a spindle hole at its rotation center; the automatic opening and closing drive mechanism includes a housing, a drive motor with a drive turbine, a linkage turbine, a linkage gear, an output spindle, and a tripping linkage component; the drive motor drives the linkage turbine to reciprocate through the drive turbine, and the linkage turbine drives the tripping linkage component to reciprocate within a preset angle range through its cam linkage part, and the tripping linkage component's lever part actuates the tripping linkage tripping lever to perform a rapid opening action; the linkage turbine drives the linkage gear and the output spindle to rotate synchronously through its drive gear. However, this patent still has some shortcomings: when the circuit breaker components malfunction, the circuit breaker is prone to failure to operate normally, making it difficult to achieve automatic opening and closing. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem that it is difficult for the circuit breaker to automatically open and close when the device fails, this utility model provides a circuit breaker to solve the above problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a circuit breaker, including a circuit breaker body and a control component. The side of the control component is attached to the side of the circuit breaker body. The control component includes a housing, a drive mechanism, a transmission gear set, and a linkage mechanism. The drive mechanism includes a motor fixed in the housing. A worm gear is fixed to the output end of the motor. The worm gear meshes with the transmission gear set. The transmission gear set is rotatably installed in the housing and connected to the circuit breaker body. The drive mechanism can drive the closing handle of the circuit breaker body to rotate through the transmission gear set to achieve closing or opening. The linkage mechanism includes a tripping rod. The tripping rod has a Y-shaped structure. One end of the upper part of the tripping rod is rotatably installed in the housing. The other end of the upper part of the tripping rod is fixed with a linkage column. A through groove is provided on the housing to avoid the linkage column. A tripping unit for connecting the linkage column is provided on the side of the circuit breaker body. The lower part of the tripping rod protrudes to one side to form a locking tooth. The locking tooth can engage with the transmission gear set.

[0006] Preferably, the transmission gear set includes a helical gear, a transmission gear, a drive gear, and a handle gear. The helical gear is rotatably mounted in the housing via a rotating shaft, and the transmission gear is rotatably mounted in the housing via a main shaft. A first pinion is fixed at the center of the helical gear, and a second pinion is fixed at the center of the transmission gear. The helical gear meshes with the worm gear, the first pinion meshes with the transmission gear, the second pinion meshes with the drive gear, and the drive gear meshes with the handle gear. The locking teeth at the lower part of the release lever can engage with the drive gear. Both the drive gear and the handle gear are rotatably mounted in the housing.

[0007] Preferably, the handle gear is a sector gear, and a permanent magnet block is fixed on the handle gear. The rotation center of the handle gear is fixed with a triangular shaft connected to the closing handle of the circuit breaker body. The handle gear can drive the closing handle of the circuit breaker body to rotate through the triangular shaft, thereby controlling the circuit breaker body to close or open.

[0008] Preferably, a light guide post is fixed to one side of the top of the housing, with the upper end of the light guide post located on the outside of the housing and the lower end of the light guide post close to the tooth surface of the handle gear.

[0009] Preferably, a toggle and a release button are installed on the other side of the top of the housing.

[0010] Preferably, a power supply interface is provided between the control component and the circuit breaker body.

[0011] The beneficial effects of this utility model are as follows: The circuit breaker body's closing handle is rotated via a drive mechanism, transmission gear set, and linkage mechanism to achieve closing or opening. When the drive gear rotates clockwise, the trip lever swings upward counterclockwise. At this time, the linkage column at the upper end of the trip lever moves upward to the tripped state, triggering the tripping unit through the linkage column of the trip lever, causing the circuit breaker body to open. At this time, the locking teeth are engaged with the drive gear and cannot move, thus ensuring that the circuit breaker body remains in the open state and cannot be closed. When the linkage column at the upper end of the trip lever moves downward to the reset state, the tripping unit is not triggered, and the circuit breaker body can close normally. This ensures both manual or automatic closing and opening operations during normal use and prevents the circuit breaker from closing during line maintenance, avoiding safety hazards. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the working state of a circuit breaker according to this utility model; Figure 2 This is a schematic diagram of the overall structure of a circuit breaker according to this utility model; Figure 3 This is a schematic diagram of the internal structure of a circuit breaker according to the present invention; Figure 4 This is a schematic diagram of the power input interface of a circuit breaker according to this utility model.

[0014] Reference numerals in the attached diagram: 1. Housing; 2. Circuit breaker body; 3. Rotating shaft; 4. Main shaft; 5. Helical gear; 6. Transmission gear; 7. Drive gear; 8. Handle gear; 9. Motor; 10. Worm gear; 11. Tripping lever; 12. Light guide column; 13. Open / close button; 14. Toggle element; 15. Permanent magnet; 16. Power input interface. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0016] like Figures 1 to 4As shown, this utility model provides an embodiment of a circuit breaker, including a circuit breaker body 2 and a control component. The side of the control component is attached to the side of the circuit breaker body 2. The control component includes a housing 1, a drive mechanism, a transmission gear set, and a linkage mechanism. The drive mechanism includes a motor 9 fixed in the housing 1. A worm gear 10 is fixed to the output end of the motor 9. The worm gear 10 meshes with the transmission gear set. The transmission gear set is rotatably installed in the housing 1 and connected to the circuit breaker body 2. The drive mechanism can drive the closing handle of the circuit breaker body 2 to rotate through the transmission gear set to achieve closing or opening.

[0017] The linkage mechanism includes a trip rod 11, which has a Y-shaped structure. One end of the upper part of the trip rod 11 is rotatably installed inside the housing 1, and the other end of the upper part of the trip rod 11 is fixed with a linkage column. The housing 1 has a through groove for avoiding the linkage column. The side of the circuit breaker body 2 is provided with a trip unit for connecting the linkage column. The trip unit adopts existing technology and its function is to open the circuit breaker body 2. The lower part of the trip rod 11 protrudes to one side to form a locking tooth, which can engage with the transmission gear set.

[0018] The transmission gear set includes a helical gear 5, a transmission gear 6, a drive gear 7, and a handle gear 8. The helical gear 5 is rotatably mounted in the housing 1 via a rotating shaft 3, and the transmission gear 6 is rotatably mounted in the housing 1 via a main shaft 4. A first pinion is fixed at the center of the helical gear 5, and a second pinion is fixed at the center of the transmission gear 6. The helical gear 5 meshes with the worm gear 10, the first pinion meshes with the transmission gear 6, the second pinion meshes with the drive gear 7, and the drive gear 7 meshes with the handle gear 8. The locking teeth at the lower part of the release lever 11 can engage with the drive gear 7. Both the drive gear 7 and the handle gear 8 are rotatably mounted in the housing 1.

[0019] When the drive gear 7 rotates clockwise, the trip rod 11 swings upward counterclockwise. At this time, the linkage column at the upper end of the trip rod 11 moves upward to the tripped state, triggering the tripping unit through the linkage column of the trip rod 11, causing the circuit breaker body 2 to open. At this time, the locking teeth are engaged with the drive gear 7 and cannot move, thus keeping the circuit breaker body 2 in the open state and preventing it from closing. When the drive gear 7 rotates counterclockwise, the trip rod 11 swings downward clockwise, causing the linkage column at the upper end of the trip rod 11 to move downward to the reset state. At this time, the tripping unit is not triggered, and the circuit breaker body 2 can close normally.

[0020] The handle gear 8 is a sector gear. The rotation center of the handle gear 8 is fixed to a triangular shaft connected to the closing handle of the circuit breaker body 2. The motor 9 of the drive mechanism drives the transmission gear set, so that the handle gear of the transmission gear set can drive the closing handle of the circuit breaker body 2 to rotate through the triangular shaft, thereby controlling the circuit breaker body 2 to close or open.

[0021] A permanent magnet block 15 is also fixed on the handle gear 8 so that the rotation angle of the handle gear 8 can be detected by the Hall sensor. After the circuit breaker body 2 opens or closes, the position change of the handle gear 8 can be detected by the Hall sensor.

[0022] A light guide post 12 is fixed on one side of the top of the housing 1. The upper end of the light guide post 12 is located on the outside of the housing 1, and the lower end of the light guide post 12 is close to the tooth surface of the handle gear 8. The light guide post 12 can indicate the rotation angle of the handle gear 8 through light signals so that the operator can determine whether it is in the closed state.

[0023] On the other side of the top of the housing 1, there is a toggle 14 and a closing / opening button 13. Both the closing / opening button 13 and the toggle 14 are connected to the drive mechanism via electrical signals. When the closing / opening button 13 is in the closed state, it can drive the trip lever 11 to the reset state through the drive mechanism and realize the closing operation through the handle gear 8. When the closing / opening button 13 is in the open state, it can drive the trip lever 11 to the trip state through the drive mechanism and realize the opening operation. At this time, the circuit breaker body 2 cannot be closed so that the line can be inspected.

[0024] A power input interface 16 is also provided between the control components and the circuit breaker body 2.

[0025] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A circuit breaker, comprising a circuit breaker body (2), characterized in that: It also includes a control component, the side of which is attached to the side of the circuit breaker body (2). The control component includes a housing (1), a drive mechanism, a transmission gear set, and a linkage mechanism. The drive mechanism includes a motor (9) fixed inside the housing (1). A worm gear (10) is fixed to the output end of the motor (9). The worm gear (10) meshes with the transmission gear set. The transmission gear set is rotatably mounted inside the housing (1) and connected to the circuit breaker body (2). The drive mechanism can drive the circuit breaker body (2) through the transmission gear set. The closing handle is rotated to close or open the circuit breaker. The linkage mechanism includes a tripping rod (11), which is a Y-shaped structure. One end of the upper part of the tripping rod (11) is rotatably installed in the housing (1). The other end of the upper part of the tripping rod (11) is fixed with a linkage column. The housing (1) has a through groove for avoiding the linkage column. The side of the circuit breaker body (2) is provided with a tripping unit for connecting the linkage column. The lower part of the tripping rod (11) protrudes to one side to form a locking tooth, which can engage with the transmission gear set.

2. A circuit breaker according to claim 1, characterized in that: The transmission gear set includes a helical gear (5), a transmission gear (6), a drive gear (7), and a handle gear (8). The helical gear (5) is rotatably mounted in the housing (1) via a rotating shaft (3). The transmission gear (6) is rotatably mounted in the housing (1) via a main shaft (4). A first pinion is fixed at the center of the helical gear (5), and a second pinion is fixed at the center of the transmission gear (6). The helical gear (5) meshes with the worm gear (10). The first pinion meshes with the transmission gear (6). The second pinion meshes with the drive gear (7). The drive gear (7) meshes with the handle gear (8). The locking teeth at the lower part of the release lever (11) can engage with the drive gear (7). Both the drive gear (7) and the handle gear (8) are rotatably mounted in the housing (1).

3. A circuit breaker according to claim 2, characterized in that: The handle gear (8) is a sector gear, and a permanent magnet block (15) is fixed on the handle gear (8). The rotation center of the handle gear (8) is fixed with a triangular shaft connected to the closing handle of the circuit breaker body (2). The handle gear (8) can drive the closing handle of the circuit breaker body (2) to rotate through the triangular shaft, thereby controlling the circuit breaker body (2) to close or open.

4. A circuit breaker according to claim 3, characterized in that: A light guide post (12) is fixed on one side of the top of the housing (1). The upper end of the light guide post (12) is located on the outside of the housing (1), and the lower end of the light guide post (12) is close to the tooth surface of the handle gear (8).

5. A circuit breaker according to claim 4, characterized in that: A toggle (14) and a snap button (13) are installed on the other side of the top of the housing (1).

6. A circuit breaker according to claim 5, characterized in that: A power supply interface (16) is also provided between the control component and the circuit breaker body (2).

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