A device for driving a circuit breaker to automatically open and close

Abstract

The utility model discloses a device for driving a circuit breaker to automatically open and close, comprising: a housing and a circuit board, wherein a motor is fixedly connected inside the housing. The utility model realizes a device for driving a circuit breaker to automatically open and close by cooperating with the housing, the circuit board, the motor, the worm gear, the reduction gear, the misaligned gear, the spare misaligned gear, the manual adjustment wheel, the trip linkage rod and the transmission gear, wherein the motor drives the misaligned gear to rotate, the fan-shaped gear of the misaligned gear meshes with the transmission gear, and the transmission gear starts to rotate, driving the transmission shaft to rotate, one end of the transmission shaft extends out of the housing and is connected to the handle of the external circuit breaker, thereby driving the external circuit breaker to automatically close the circuit breaker, when the misaligned gear is damaged during long-term use, a hexagonal wrench is inserted into the hexagonal rotating rod, and the spare misaligned gear is driven to rotate by manual rotation, thereby driving the trip linkage rod to rotate, completing manual opening and closing, and improving the emergency treatment effect of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a device for driving a circuit breaker to automatically open and close. Background Art

[0002] Intelligent small switch controllers are widely used in various fields such as home, business, and industry. Common ones include automatic reclosing protectors, intelligent switches, and other devices. At present, electronic automatic reclosing protectors use relays as the disconnection of the main circuit. Due to the insufficient disconnection capacity of the relay, when a short circuit occurs in the circuit, the relay cannot be disconnected. Therefore, it must be used in conjunction with an air breaker. Therefore, everyone has studied mechanical reclosing, that is, an intelligent air breaker composed of a small micro-breaker + actuator + electronic components.

[0003] As disclosed in publication number: CN113658833A, a small circuit breaker opening and closing mechanism is detachably arranged from the small circuit breaker, and the opening and closing mechanism includes a shell, in which a fan-shaped closing gear, a double-layer special-shaped reduction closing transmission gear, a worm, a reduction motor, a trip lever, a push-pull electromagnet, a linkage shaft between the opening and closing handle of the linkage circuit breaker and the fan-shaped closing gear, a fan-shaped closing gear closing position sensor, a fan-shaped closing gear opening position sensor, and a double-layer special-shaped reduction closing transmission gear position sensor are arranged.

[0004] However, the above-disclosed circuit breaker opening and closing mechanism requires replacement of the entire device when a gear in the mechanism is damaged, and there is no backup plan for emergency use, which has low safety. Therefore, it is necessary to propose a device for driving the circuit breaker to automatically open and close. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a device for driving a circuit breaker to automatically open and close.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for driving a circuit breaker to automatically open and close comprises: a housing and a circuit board, wherein a motor is fixedly connected to the interior of the housing;

[0008] A worm gear, the worm gear being mounted inside the housing via a rotating shaft;

[0009] A reduction gear meshing with the worm gear;

[0010] An offset gear meshing with the reduction gear;

[0011] A spare misaligned gear, wherein the spare misaligned gear is coaxially connected with the misaligned gear;

[0012] A manual adjustment wheel, which is connected to the inside of the housing through a rotating shaft and is located on the left side of the misaligned gear;

[0013] A tripping linkage rod, wherein the tripping linkage rod is connected to the housing via a rotating shaft;

[0014] The transmission gear is connected to the inside of the housing through a rotating shaft and meshes with the offset gear.

[0015] The above-mentioned device for driving the circuit breaker to automatically open and close, wherein the output shaft of the motor is fixedly connected with a worm;

[0016] A fixing plate supports the worm.

[0017] In the above-mentioned device for driving the circuit breaker to automatically open and close, the worm wheel and the reduction gear are both a combination of a large gear and a small gear, and the small gear part of the worm wheel is meshed with the large gear part of the reduction gear.

[0018] The above-mentioned device for driving the circuit breaker to automatically open and close, wherein a fan-shaped gear is fixedly connected to the surface of the offset gear, and the fan-shaped gear is in contact with the tripping linkage rod;

[0019] A spare sector gear is fixedly connected to the spare offset gear.

[0020] In the above-mentioned device for driving the circuit breaker to automatically open and close, a hexagonal rotating rod is fixedly connected to the surface of the spare offset gear, and the hexagonal rotating rod passes through the housing and extends to the outside thereof.

[0021] In the above-mentioned device for driving a circuit breaker to automatically open and close, a transmission shaft is fixedly connected to the surface of the transmission gear, and the transmission shaft passes through the housing and extends to the outside thereof.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] 1. The utility model realizes a device for driving the circuit breaker to automatically open and close by cooperating with each other, including a housing, a circuit board, a motor, a worm gear, a reduction gear, an offset gear, a spare offset gear, a manual adjustment wheel, a trip linkage rod and a transmission gear. When the circuit receives an instruction from opening to closing, the motor drives the offset gear to rotate, and four-fifths of a circle of the offset gear is in neutral. The fan gear of the offset gear meshes with the transmission gear, and the transmission gear starts to rotate, thereby driving the transmission shaft to rotate. One end of the transmission shaft extends out of the housing and is connected to the handle of the external circuit breaker, thereby driving the external circuit breaker to perform an automatic closing operation. After the closing operation is completed, the motor stops rotating; when the circuit receives an instruction from closing to opening, the motor drives the offset gear to rotate, and the offset gear The fan-shaped gear rotated thereon conflicts with the interference part of the trip linkage rod, and the swing arm of the trip linkage rod extends out of the limit slot and is linked with the lock of the external circuit breaker. The swing arm can only rotate within a certain angle range. In the initial state, the swing arm conflicts with the lower side wall of the limit slot, and the fan-shaped gear of the misaligned gear drives the trip linkage rod to rotate. The swing arm rotates upward along the limit slot and can toggle the lock of the external circuit breaker to quickly open the external circuit breaker. After the opening operation is completed, the motor stops rotating. When the misaligned gear is damaged during long-term use and causes tooth disengagement, a hexagonal wrench is inserted into the hexagonal rotating rod, and the spare misaligned gear is driven to rotate through manual rotation, thereby driving the trip linkage rod to rotate, completing manual opening and closing, and improving the emergency handling effect of the device.

[0024] 2. In the present invention, the spare misaligned gear is coaxial with the misaligned gear to ensure the synchronization of the misaligned gear's rotation.

[0025] 3. In the present invention, a circuit board is provided to process and control the opening and closing operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural cross-sectional view of the main view of the utility model;

[0027] Figure 2 It is a three-dimensional structural diagram of the worm gear of the utility model;

[0028] Figure 3 It is a three-dimensional structural diagram of the reduction gear of the utility model;

[0029] Figure 4 It is a three-dimensional structural diagram of the staggered gear and the sector gear of the utility model;

[0030] Figure 5 It is a three-dimensional structural diagram of the spare misaligned gear and spare sector gear of the utility model;

[0031] Figure 6 It is a connection diagram of the staggered gear, spare staggered gear, sector gear and spare sector gear of the utility model;

[0032] Figure 7 It is a three-dimensional structural diagram of the tripping linkage rod of the utility model.

[0033] In the figure:

[0034] 1 housing, 2 circuit board, 3 motor, 4 worm gear, 5 reduction gear, 6 offset gear, 7 spare offset gear, 8 manual adjustment wheel, 9 trip linkage rod, 10 transmission gear, 11 worm, 12 fixing plate, 13 sector gear, 14 spare sector gear, 15 hexagonal rotary rod, 16 transmission shaft. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-7 As shown, a device for driving a circuit breaker to automatically open and close includes: a housing 1 and a circuit board 2, the circuit board 2 processes and controls the opening and closing operations of a motor 3, the motor 3 is fixedly connected to the inside of the housing 1, and the output shaft of the motor 3 is fixedly connected to a worm 11.

[0037] The fixing plate 12 supports the worm 11 .

[0038] The worm gear 4 is installed inside the housing 1 via a rotating shaft.

[0039] The reduction gear 5 meshes with the worm gear 4 .

[0040] The offset gear 6 is meshed with the reduction gear 6. The worm gear 4 and the reduction gear 6 are both a combination of a large gear and a small gear. The small gear part of the worm gear 4 is meshed with the large gear part of the reduction gear 6. A fan gear 13 is fixedly connected to the surface of the offset gear 6, and the fan gear 13 is in contact with the release linkage rod 9.

[0041] The spare sector gear 14 is fixedly connected to the spare offset gear 7 and can contact the tripping linkage rod 9 during the rotation process.

[0042] The spare misaligned gear 7 is coaxially connected with the misaligned gear 6. A hexagonal rotating rod 15 is fixedly connected to the surface of the spare misaligned gear 7. The hexagonal rotating rod 15 passes through the shell 1 and extends to the outside thereof. The coaxial design with the misaligned gear 6 ensures the synchronization of the rotation with the misaligned gear 6.

[0043] The manual adjusting wheel 8 is connected to the inside of the housing 1 through a rotating shaft and is located on the left side of the offset gear 6 . The manual adjusting wheel 8 is meshed with the spare offset gear 7 .

[0044] The tripping linkage rod 9 is connected to the housing 1 through a rotating shaft.

[0045] Transmission gear 10, the transmission gear 10 is connected to the inside of the housing 1 through a rotating shaft and meshes with the offset gear 6. The surface of the transmission gear 10 is fixedly connected with a transmission shaft 16, which penetrates the housing 1 and extends to the outside thereof. The motor 3 drives the offset gear 6 to rotate. The offset gear 6 has four-fifths of a turn in neutral. The fan gear 13 of the offset gear 6 meshes with the transmission gear 10, and the transmission gear 10 starts to rotate, thereby driving the transmission shaft 16 to rotate. One end of the transmission shaft 16 extends out of the housing 1 and is connected to the handle of the external circuit breaker, thereby driving the external circuit breaker to perform an automatic closing operation. After the closing operation is completed, the motor 3 stops rotating; when the circuit receives a command from closing to opening, the motor 3 drives the offset gear 6 to rotate, and the offset gear 6 rotates to the fan gear 13 on it. The gear 13 conflicts with the contact part of the trip linkage rod 9, and the swing arm of the trip linkage rod 9 extends out of the limit slot and is linked with the lock of the external circuit breaker. The swing arm can only rotate within a certain angle range. In the initial state, the swing arm conflicts with the lower side wall of the limit slot, and the fan gear 13 of the offset gear 6 drives the trip linkage rod 9 to rotate. The swing arm rotates upward along the limit slot and can turn the lock of the external circuit breaker to quickly open the external circuit breaker. After the opening operation is completed, the motor stops rotating. When the offset gear 6 is damaged during long-term use and causes tooth disengagement, a hexagonal wrench can be inserted into the hexagonal rotating rod 15, and the spare offset gear 7 can be driven to rotate by manual rotation, thereby driving the trip linkage rod 9 to rotate, completing manual opening and closing, and improving the emergency handling effect of the device.

[0046] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0047] The utility model provides a device for driving a circuit breaker to automatically open and close. When in use, the motor 3 drives the offset gear 6 to rotate, and the offset gear 6 has four-fifths of a turn as a neutral gear. The fan gear 13 of the offset gear 6 meshes with the transmission gear 10, and the transmission gear 10 starts to rotate, thereby driving the transmission shaft 16 to rotate. One end of the transmission shaft 16 extends out of the housing 1 and is connected to the handle of an external circuit breaker, thereby driving the external circuit breaker to perform an automatic closing operation. After the closing operation is completed, the motor 3 stops rotating; when the circuit receives a command from closing to opening, the motor 3 drives the offset gear 6 to rotate, and the offset gear 6 rotates until the fan gear 13 thereon conflicts with the conflicting portion of the tripping linkage rod 9. The swing arm of the trip linkage rod 9 extends out of the limit slot and is linked to the lock of the external circuit breaker. The swing arm can only rotate within a certain angle range. In the initial state, the swing arm contacts the lower side wall of the limit slot, and the fan gear 13 of the offset gear 6 drives the trip linkage rod 9 to rotate. The swing arm rotates upward along the limit slot and can toggle the lock of the external circuit breaker to quickly open the external circuit breaker. After the opening operation is completed, the motor stops rotating. When the offset gear 6 is damaged during long-term use and causes tooth disengagement, the hexagonal wrench can be inserted into the hexagonal rotating rod 15, and the spare offset gear 7 can be driven to rotate by manual rotation, thereby driving the trip linkage rod 9 to rotate, and completing the manual opening and closing operations.

[0048] In summary, the device for driving the circuit breaker to automatically open and close is composed of a housing 1, a circuit board 2, a motor 3, a worm gear 4, a reduction gear 5, an offset gear 6, a spare offset gear 7, a manual adjustment wheel 8, a tripping linkage rod 9 and a transmission gear 10, which cooperate with each other to solve the problems mentioned in the background technology.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for driving a circuit breaker to automatically open and close, comprising: A housing (1) and a circuit board (2), characterized in that a motor (3) is fixedly connected to the interior of the housing (1); A worm gear (4), wherein the worm gear (4) is mounted inside the housing (1) via a rotating shaft; A reduction gear (5), wherein the reduction gear (5) is meshed with the worm gear (4); An offset gear (6), wherein the offset gear (6) is meshed with the reduction gear (5); A spare misaligned gear (7), wherein the spare misaligned gear (7) is coaxially connected to the misaligned gear (6); A manual adjustment wheel (8), the manual adjustment wheel (8) being connected to the interior of the housing (1) via a rotating shaft and being located on the left side of the offset gear (6); A tripping linkage rod (9), wherein the tripping linkage rod (9) is connected to the housing (1) via a rotating shaft; A transmission gear (10) is connected to the interior of the housing (1) via a rotating shaft and meshes with the offset gear (6).

2. A device for driving a circuit breaker to automatically open and close according to claim 1, characterized in that: The output shaft of the motor (3) is fixedly connected to a worm (11); A fixed plate (12), wherein the fixed plate (12) supports the worm (11).

3. A device for driving a circuit breaker to automatically open and close according to claim 2, characterized in that: The worm wheel (4) and the reduction gear (5) are both a combination of a large gear and a small gear, and the small gear part of the worm wheel (4) is meshed with the large gear part of the reduction gear (5).

4. A device for driving a circuit breaker to automatically open and close according to claim 3, characterized in that: A sector gear (13) is fixedly connected to the surface of the offset gear (6), and the sector gear (13) is in contact with the tripping linkage rod (9); A spare sector gear (14), wherein the spare sector gear (14) is fixedly connected to the spare offset gear (7).

5. A device for driving a circuit breaker to automatically open and close according to claim 4, characterized in that: A hexagonal rotating rod (15) is fixedly connected to the surface of the spare misaligned gear (7), and the hexagonal rotating rod (15) penetrates the housing (1) and extends to the outside thereof.

6. A device for driving a circuit breaker to automatically open and close according to claim 5, characterized in that: A transmission shaft (16) is fixedly connected to the surface of the transmission gear (10), and the transmission shaft (16) passes through the housing (1) and extends to the outside thereof.

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