Electric operating device and circuit breaker

Abstract

The utility model provides an electric operating device, which comprises a driving motor, a circuit breaking handle and a transmission assembly driven by the driving motor to drive the circuit breaking handle to rotate, the output end of the driving motor is provided with a worm, and the transmission assembly comprises a bevel gear meshed with the worm and a first straight gear coaxially arranged with the bevel gear. The helical gear comprises a helical tooth part and a first driving boss protruding and extending towards the first straight gear from the helical tooth part, the first straight gear comprises a straight tooth part and a first driving block protruding and extending towards the helical gear, and a first abutting block and a first driving groove adjacent to the first abutting block are arranged in the first driving block; the first driving boss extends into the first driving groove in a protruding mode so as to abut against the first abutting block in the circumferential direction, and the length of the first driving groove in the circumferential direction is larger than that of the first driving boss in the circumferential direction. According to the electric operating device and the circuit breaker of the utility model, the idle stroke is increased, so that the reverse return is realized, and the switching-off and switching-on blocking phenomena of the circuit breaker are effectively prevented.

Description

Technical Field

[0001] The utility model relates to an electric operating device and a circuit breaker. Background Art

[0002] In the field of electric power, intelligent circuit breakers, as devices that can monitor parameters such as current and voltage and can automatically switch on and off, are widely used. However, ordinary intelligent circuit breakers also have some problems. After the intelligent circuit breaker switches on and off a certain number of times, the phenomenon of being unable to switch on and off and getting blocked frequently occurs.

[0003] In view of this, it is necessary to improve the existing electric operating device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric operating device to solve the problem that the existing circuit breaker is prone to blocking.

[0005] To achieve the above purpose, the utility model provides an electric operating device. The electric operating device includes a driving motor, a circuit breaker handle, and a transmission component driven by the driving motor to drive the circuit breaker handle to rotate. A worm is provided at the output end of the driving motor. The transmission component includes a helical gear meshing with the worm and a first spur gear coaxially arranged with the helical gear. The helical gear includes a helical tooth portion and a first driving boss protruding from the helical tooth portion towards the first spur gear. The first spur gear includes a straight tooth portion and a first driving block protruding towards the helical gear. A first abutting block and a first driving groove adjacent to the first abutting block are provided in the first driving block. The first driving boss protrudes into the first driving groove to abut against the first abutting block circumferentially. The circumferential length of the first driving groove is longer than the circumferential length of the first driving boss.

[0006] As a further improvement of the utility model, the number of the first driving bosses is two, the number of the first driving grooves and the first abutting blocks are both two, and the first driving grooves and the first abutting blocks are arranged alternately.

[0007] As a further improvement of the utility model, the helical gear further includes a first limiting shaft protruding towards the first spur gear, and the first driving boss is arranged adjacent to the first limiting shaft radially.

[0008] As a further improvement of the utility model, the first limiting shaft is inserted between the two first abutting blocks.

[0009] As a further improvement of the present utility model, the transmission assembly further includes a spur gear set meshing with the first spur gear, a clutch gear meshing with the spur gear set, and a second spur gear coaxially arranged with the clutch gear. The clutch gear protrudes towards the middle to form a second driving boss and a second driving groove surrounding the second driving boss. The second spur gear further includes a second abutting block protruding into the second driving groove to abut against the second driving boss, and the circumferential length of the second driving groove is greater than that of the second abutting block.

[0010] As a further improvement of the present utility model, the second spur gear further includes a second limiting shaft protruding into the middle of the second driving groove, and the second abutting block is arranged adjacent to the second limiting shaft.

[0011] As a further improvement of the present utility model, the number of both the second driving boss and the second abutting block is one.

[0012] As a further improvement of the present utility model, the transmission assembly further includes a handle gear meshing with the second spur gear, and the handle gear is connected to the opening / closing handle.

[0013] As a further improvement of the present utility model, the electric operating device further includes a base for supporting the transmission assembly and a gear cover for shielding the transmission assembly.

[0014] The present utility model also provides a circuit breaker, and the circuit breaker includes the electric operating device as described above.

[0015] The beneficial effects of the present utility model are as follows: For the electric operating device and the circuit breaker of the present utility model, by setting the helical gear to be coaxially arranged with the first spur gear, and making the circumferential length of the first driving groove longer than the circumferential length of the first driving boss, the idle stroke is increased, and thus reverse return is realized, effectively preventing the phenomena of jamming during opening and closing of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the circuit breaker of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the electric operating device of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the helical gear of the electric operating device of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the first spur gear of the electric operating device of the present utility model;

[0020] Figure 5It is a schematic structural diagram of the clutch gear of the electric operating device of the present utility model;

[0021] Figure 6 It is a schematic structural diagram of the second spur gear of the electric operating device of the present utility model. Specific embodiments

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] As Figures 1 to 6 shown, the circuit breaker 100 of the present utility model includes a housing 1 and an electric operating device 3 disposed inside the housing 1.

[0026] The electric operating device 3 includes a drive motor 31, a circuit breaker handle 32, and a transmission assembly 33 driven by the drive motor 31 to drive the circuit breaker handle 32 to rotate.

[0027] A worm 311 is provided at the output end of the drive motor 31, and the drive motor 31 can drive the worm 311 to rotate forward or backward.

[0028] The transmission assembly 33 includes a helical gear 331 meshed with the worm 311, a first spur gear 332 coaxially arranged with the helical gear 331, a spur gear set 333 meshed with the first spur gear 332, a clutch gear 334 meshed with the spur gear set 333, a second spur gear 335 coaxially arranged with the clutch gear 334, a handle gear 336 meshed with the second spur gear 335, a base 337 for supporting the transmission assembly 33, and a gear cover 338 for shielding the transmission assembly 33.

[0029] The helical gear 331 includes a helical tooth portion 3313, a first driving boss 3311 protruding from the helical tooth portion 3313 toward the first spur gear 332, and a first limiting shaft 3312 protruding toward the first spur gear 332. The helical tooth portion 3313 is used for meshing with the worm 311 and being driven by the worm 311 to rotate.

[0030] The first driving boss 3311 is arranged adjacent to the first limiting shaft 3312 in the radial direction.

[0031] The first spur gear 332 includes a spur tooth portion 3324 and a first driving block 3321 protruding toward the helical gear 331. A first abutting block 3322 and a first driving groove 3323 adjacent to the first abutting block 3322 are arranged in the first driving block 3321. The first driving boss 3311 protrudes into the first driving groove 3323 and abuts against the first abutting block 3322 in the circumferential direction. The circumferential length of the first driving groove 3323 is longer than the circumferential length of the first driving boss 3311.

[0032] The number of the first driving bosses 3311 is two, the number of the first driving grooves 3323 and the first abutting blocks 3322 are both two, and the first driving grooves 3323 and the first abutting blocks 3322 are arranged alternately. The first driving grooves 3323 and the first abutting blocks 3322 are both symmetrically arranged.

[0033] The first limiting shaft 3312 is inserted between the two first abutting blocks 3322.

[0034] When the first driving boss 3311 and the first abutting block 3322 are in contact, the helical gear 331 can drive the first spur gear 332 to rotate. Because the circumferential length of the first driving groove 3323 is longer than the circumferential length of the first driving boss 3311, an idle stroke is left. The first driving boss 3311 can rotate in the reverse direction to disengage from the first abutting block 3322 and move a certain distance, and then abut against the first abutting block 3322 on the other side.

[0035] The clutch gear 334 protrudes towards the middle and is provided with a second driving boss 3341 and a second driving groove 3342 surrounding the second driving boss 3341.

[0036] The second spur gear 335 further includes a second abutting block 3351 that protrudes into the second driving groove 3342 to abut against the second driving boss 3341, and a second limiting shaft 3352 that protrudes into the middle of the second driving groove 3342. The circumferential length of the second driving groove 3342 is greater than that of the second abutting block 3351.

[0037] The number of both the second driving boss 3341 and the second abutting block 3351 is one.

[0038] The second abutting block 3351 is arranged adjacent to the second limiting shaft 3352.

[0039] When the second driving boss 3341 and the second abutting block 3351 are in contact, the clutch gear 334 can drive the second spur gear 335 to rotate. Since the circumferential length of the second driving groove 3342 is longer than the circumferential length of the second abutting block 3351, an idle stroke is left. The second driving boss 3341 can rotate in the reverse direction to disengage from the second abutting block 3351 and move a certain distance until it abuts against the other end of the second abutting block 3351.

[0040] Increasing the idle stroke at the clutch gear 334 and the second spur gear 335 can improve the anti-blocking effect.

[0041] The handle gear 336 is connected to the circuit breaker handle 32 to drive the circuit breaker handle 32 to rotate.

[0042] In the electric operating device 3 and the circuit breaker 100 of the present utility model, by setting the helical gear 331 and the first spur gear 332 to be coaxially arranged, and making the circumferential length of the first driving groove 3323 longer than the circumferential length of the first driving boss 3311, an idle stroke is increased, thereby realizing reverse return, effectively preventing the phenomena of jamming during opening and closing of the circuit breaker 100. The electric operating device 3 and the circuit breaker 100 of the present utility model have a simple structure, are convenient to install, save costs, prevent jamming, improve the reliability of the product, provide the automation level, and are convenient for batch processing and production.

[0043] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0044] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An electric operating device, characterized in that: The electric operating device includes a driving motor, a circuit breaker handle, and a transmission assembly driven by the driving motor to drive the circuit breaker handle to rotate. A worm is provided at the output end of the driving motor. The transmission assembly includes a helical gear meshing with the worm and a first spur gear coaxially arranged with the helical gear. The helical gear includes a helical tooth portion and a first driving boss protruding from the helical tooth portion toward the first spur gear. The first spur gear includes a spur tooth portion and a first driving block protruding toward the helical gear. A first abutting block and a first driving groove adjacent to the first abutting block are provided in the first driving block. The first driving boss protrudes into the first driving groove to abut against the first abutting block along the circumferential direction. The length of the first driving groove along the circumferential direction is longer than the length of the first driving boss along the circumferential direction.

2. The electric operating device according to claim 1, characterized in that: The number of the first driving bosses is two, the number of the first driving grooves and the number of the first abutting blocks are both two, and the first driving grooves and the first abutting blocks are alternately arranged.

3. The electric operating device according to claim 2, characterized in that: The bevel gear further includes a first limiting shaft protruding toward the first spur gear, and the first driving boss is disposed radially adjacent to the first limiting shaft.

4. The electric operating device according to claim 3, characterized in that: The first limiting shaft is inserted between the two first supporting blocks.

5. The electric operating device according to claim 1, characterized in that: The transmission assembly also includes a spur gear set meshing with the first spur gear, a clutch gear meshing with the spur gear set, and a second spur gear coaxially arranged with the clutch gear. The clutch gear is provided with a second driving boss protruding toward the middle and a second driving groove arranged around the second driving boss. The second spur gear also includes a second abutting block protruding into the second driving groove to abut against the second driving boss. The circumferential length of the second driving groove is greater than that of the second abutting block.

6. The electric operating device according to claim 5, characterized in that: The second spur gear further includes a second limiting shaft protruding into the middle of the second driving groove, and the second abutting block is disposed adjacent to the second limiting shaft.

7. The electric operating device according to claim 6, characterized in that: The number of the second driving boss and the number of the second abutting block are both one.

8. The electric operating device according to claim 5, characterized in that: The transmission assembly also includes a handle gear meshing with the second spur gear, and the handle gear is connected to the circuit breaker handle.

9. The electric operating device according to claim 1, characterized in that: The electric operating device also includes a base for supporting the transmission assembly and a gear cover for shielding the transmission assembly.

10. A circuit breaker, characterized in that: The circuit breaker comprises the electric operating device according to any one of claims 1-9.

Images