Energy storage device for circuit breaker

Abstract

The utility model relates to the technical field of universal circuit breakers, in particular to an energy storage device for a circuit breaker, which comprises a motor, a transmission assembly connected with the motor, a clutch assembly connected with the transmission assembly and a shell connected with the motor. The shell is internally provided with a cavity, the transmission assembly and the clutch assembly are both located in the cavity, the shell is provided with a first opening, the first opening is formed in the transmission assembly or the clutch assembly, and the clutch assembly is used for being connected with an external circuit breaker. The shell is provided with the cavity for protecting the transmission assembly and the clutch assembly, and meanwhile, the first opening is formed in the transmission assembly or the clutch assembly, so that the clutch assembly can be conveniently operated by rotating manually, the clutch assembly and an external circuit breaker can be conveniently aligned, installation is convenient, and the operation condition of the clutch assembly or the transmission assembly can be conveniently observed; lubricating oil can be conveniently injected into the clutch assembly or the transmission assembly, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of universal circuit breakers, and more specifically, to an energy storage device for a circuit breaker. Background Art

[0002] The universal circuit breaker, also known as the frame circuit breaker, is a mechanical switching electrical appliance that can connect, carry, and break the current under normal circuit conditions, and can also connect, carry for a certain time, and break the current under specified abnormal circuit conditions. An energy storage spring is provided inside the circuit breaker. During use, it is necessary to store energy in the energy storage spring so that when there is a line fault inspection or overload, the switch contacts can immediately cut off the circuit to prevent the contacts from generating arcing and burning out. One end of the energy storage spring is connected to a cam structure. During energy storage, the cam rotates, driving the energy storage spring to stretch and store energy. When closing or opening the circuit breaker, the elastic force of the energy storage spring will be released. The energy storage spring of the existing circuit breaker can be manually or automatically energized. Manual energy storage is achieved by repeatedly pulling the operating rod to intermittently drive the cam to rotate for energy storage. Automatic energy storage generally uses an energy storage device with a motor and a speed reduction transmission structure, and the cam is rotated by the motor for energy storage.

[0003] In the existing automatic energy storage scheme, its speed reduction transmission structure is generally open and lacks a wrapped protective shell. During use, foreign objects are likely to fall into it, causing transmission failures and affecting energy storage. In the speed reduction transmission structure with a wrapped protective shell, the protective shell is generally fully enclosed. During installation, it is difficult to move or rotate the speed reduction transmission structure, which is not convenient for alignment with the cam. During maintenance, the internal situation of the speed reduction transmission structure cannot be directly observed, which is not convenient for maintenance or adding lubricating oil. Therefore, the protective shell of the existing energy storage device cannot meet the actual use requirements and has defects or inconveniences during use. On the other hand, the speed reduction transmission structure of the current energy storage device is generally also connected with a clutch structure. When the energy storage spring is released, it will drive the end component of the speed reduction transmission mechanism to rotate. After setting the clutch structure, the power back transmission can be avoided to prevent damage to the motor. However, the existing large-sized clutch structures need to be installed outside the speed reduction transmission mechanism, occupying space and having poor adaptability. The small-sized clutch structures generally have average performance, with slow clutch response, which will bring certain resistance to the energy storage spring and affect the energy release effect. Summary of the Utility Model

[0004] In order to overcome the problem that the protective shell of the energy storage device in the above-mentioned prior art cannot meet the actual use requirements, the utility model provides an energy storage device for a circuit breaker, which can not only protect the speed reduction transmission mechanism but also be convenient for use and maintenance.

[0005] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: An energy storage device for a circuit breaker, comprising: a motor, a transmission assembly connected to the motor, a clutch assembly connected to the transmission assembly, and a housing connected to the motor; a cavity is provided inside the housing, the transmission assembly and the clutch assembly are both located inside the cavity, a first opening is provided on the housing, and the first opening is provided at the transmission assembly or the clutch assembly, and the clutch assembly is used to connect to an external circuit breaker.

[0006] The motor drives the transmission assembly and the clutch assembly. The clutch assembly is connected to an external circuit breaker, so that power is output from the clutch assembly to the external circuit breaker, causing the cam of the external circuit breaker to rotate, and then stretching the energy storage spring for energy storage. After the energy storage is completed, the clutch assembly disconnects the power, and the external circuit breaker drives the end component of the clutch assembly to rotate in the reverse direction. The end component is the component in the clutch assembly that is directly connected to the external circuit breaker. At this time, the power released by the external circuit breaker will be interrupted in the clutch assembly and will not be transmitted back to the transmission assembly; a cavity is provided inside the housing, and protection is achieved by arranging the transmission assembly and the clutch assembly inside the cavity. A first opening is also provided on the housing, and the first opening is located at the clutch assembly or the transmission assembly, which facilitates the operation of the clutch assembly, facilitates the rotation of the end component of the clutch assembly, facilitates installation, and is also convenient for adding lubricating oil, observing the operation of the clutch assembly and the transmission assembly, and facilitating maintenance.

[0007] Preferably, the clutch assembly includes a sun gear connected to the transmission assembly, a planet gear meshing with the sun gear, a planet carrier connected to the planet gear, a ring gear member meshing with the planet gear, and a locking assembly connected to the housing; the locking assembly locks the planet carrier within a set rotation range of the ring gear member and unlocks it otherwise. The sun gear is rotatably connected to the housing, the planet gear is rotatably connected to the side of the planet carrier, and the ring gear member is used to connect to an external circuit breaker.

[0008] The clutch assembly of this energy storage device adopts a planetary gear assembly. When transmitting power outward, that is, transmitting power to the circuit breaker, the sun gear rotates, driving the planetary gears to rotate. The planetary gears are rotatably installed on the side of the planet carrier. When outputting power, the locking assembly locks the planet carrier, and the planetary gears only rotate on their own axes without revolving, and then the power is transmitted to the ring gear part. The ring gear part rotates, driving the cam of the external circuit breaker to rotate for energy storage. The external cam stores and releases energy in the same rotation direction. When rotating to a specific angle, the energy storage spring is stretched to the longest, and the energy storage ends. The set rotation range of the above-mentioned ring gear part, that is, the rotation range of the entire energy storage process of the ring gear part. At this time, the locking assembly remains locked. When the energy storage ends, the locking assembly is unlocked. At this time, if the motor power continues to be input, the sun gear rotates, and the planet carrier will also rotate accordingly. The planetary gears will revolve while rotating on their own axes and cannot transmit power to the ring gear part. The ring gear part will not rotate accordingly, realizing power separation. The external energy storage spring can maintain the state after energy storage. When the external circuit breaker needs to close or open, it is necessary to release the elastic force of the energy storage spring. During the energy release process, the ring gear part will be driven to rotate, and at this time, the rotation direction of the ring gear part is the same as that during energy storage. During the energy release rotation process, the planet carrier is always in the unlocked state, and the power will not be transmitted reversely to the transmission assembly until the energy release ends and the external circuit breaker no longer provides power for the ring gear part to rotate, and then the locking assembly locks the planet carrier again. Specifically, the ring gear part is a component with internal teeth meshing with the planetary gears, and at the same time, the ring gear part is also provided with a connection part connected to the external circuit breaker. The transmission assembly generally adopts a speed reduction transmission assembly, and can be transmitted by means of gears, chains or belts, etc. The locking assembly can adopt a telescopic motor or a telescopic cylinder, etc. Within the set rotation range of the ring gear part, the telescopic motor or the telescopic cylinder extends to lock the planet carrier, and outside the set rotation range, the telescopic motor or the telescopic cylinder resets to unlock.

[0009] Preferably, the locking assembly includes a pawl part rotatably connected to the housing, a reset part connected to the pawl part, a first protrusion provided on the pawl part, and a second protrusion provided on the ring gear part; the planet carrier is a ratchet wheel, the pawl abuts against the ratchet teeth of the planet carrier and locks, the reset part is used to rotate the pawl part and then reset, when the ring gear part rotates to the set angle range, the second protrusion abuts against the first protrusion and pushes up the pawl part to unlock.

[0010] The locking component uses a pawl as the locking part, and at the same time, the planet carrier is set as a ratchet wheel. When the pawl abuts against the ratchet teeth of the planet carrier, the planet carrier remains in a locked state. Specifically, within the set rotation range of the ring gear, the ring gear stores energy. At this time, the reset component always keeps the pawl in contact with the planet carrier, so that the planet carrier remains in a locked state, and then the power can be transmitted to the ring gear to make the ring gear rotate and store energy; during the energy release process, the second protrusion always pushes up the first protrusion. At this time, the rotational power of the ring gear is transmitted to the planet carrier through the planet gear, and the planet carrier rotates, that is, the planet gear rotates around its own axis while revolving around the sun gear. The power will not be transmitted to the sun gear and thus cannot be transmitted to the transmission component, realizing power separation. Since the second protrusion always pushes up the first protrusion from the end of energy storage until the end of energy release, that is, the pawl never restricts the planet carrier, the clutch response is advanced to the end of energy storage, avoiding untimely clutch response and ensuring sufficient and thorough power separation. When the external circuit breaker releases energy, it can fully ensure that the ring gear can rotate smoothly, avoiding resistance and affecting the energy release effect, thereby improving the energy release effect.

[0011] Preferably, a normally open microswitch is further connected to the housing. A groove portion is provided on the ring gear. The triggering portion of the microswitch abuts against the ring gear. The microswitch is electrically connected to the motor. When the ring gear rotates to the set angle range, the triggering portion of the microswitch slides into the groove portion and cuts off the current. A second opening is provided on the housing, and the triggering portion of the microswitch extends into the housing from the second opening.

[0012] The triggering portion of the microswitch abuts against the outer ring of the ring gear and is energized when abutting. At this time, the motor is powered on and operates, and then energy is stored. When the ring gear rotates to the set angle range, at this time, the external circuit breaker has completed energy storage. The triggering portion of the microswitch slides into the groove portion. At this time, the microswitch is powered off and the motor stops operating, stopping energy storage. In this state, it is also the state where the second protrusion pushes up the first protrusion. The triggering portion of the microswitch is the triggering rod, and the microswitch can be a rotatable triggering or telescopic triggering type switch.

[0013] Preferably, the housing includes a first housing and a second housing connected to the first housing. The first opening and the second opening are both provided on the second housing. The motor and the ring gear are both connected to the second housing.

[0014] Setting the first opening and the second opening on the second housing is convenient for manufacturing. Connecting the motor and the ring gear to the second housing is convenient for reducing the volume.

[0015] Preferably, an avoidance portion is provided on the second housing, and the microswitch is installed at the avoidance portion. The second opening is located at the avoidance portion.

[0016] Providing the avoidance portion facilitates the installation of the micro switch and also helps to reduce the volume and save space.

[0017] Preferably, the second housing is provided with an alignment mark, the alignment mark is used to identify the rotation angle of the gear ring component, and the gear ring component is provided with a mark corresponding to the alignment mark.

[0018] Setting up alignment marks can further facilitate installation. The alignment marks can be scale lines or arrows, etc. The marks on the gear ring can be set separately, or the grooves at the connection can be used as marks. In this solution, the grooves at the connection with the external circuit breaker are used as marks.

[0019] Preferably, a wire fixer is connected to the second housing, and the wire fixer is used to fix the connecting wires between the micro switch and the motor.

[0020] The wire holder is integrally or separately arranged with the second housing.

[0021] Preferably, the pawl member is disposed in the cavity.

[0022] The pawl member is arranged in the cavity to further save space and prevent the pawl member from being stuck by foreign objects.

[0023] Preferably, two ends of the reset member are respectively connected to the housing and the pawl member, and the reset member is a tension spring.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The housing is provided with a cavity to protect the transmission assembly and the clutch assembly. At the same time, a first opening is provided at the transmission assembly or the clutch assembly to facilitate manual rotation to operate the clutch assembly, thereby facilitating alignment of the clutch assembly with the external circuit breaker, facilitating installation, and facilitating observation of the operation of the clutch assembly or the transmission assembly, as well as facilitating the filling of lubricating oil to the clutch assembly or the transmission assembly and facilitating maintenance;

[0026] 2. Use the sun gear, planetary gear, ring gear, planetary carrier and pawl components as the clutch mechanism, and set the planetary carrier as the ratchet. When the motor outputs power, the planetary carrier is supported by the pawl, and the planetary gear drives the ring gear to rotate and store energy. When the energy storage ends and the energy is released, the pawl is lifted, and the planetary carrier can drive the planetary gear to rotate, thereby realizing power separation, ensuring the smoothness of the energy release process, and improving the energy release effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of an energy storage device for a circuit breaker of the present utility model;

[0028] Figure 2It is a schematic diagram of the overall structure of an energy storage device for a circuit breaker according to the present utility model from another angle;

[0029] Figure 3 It is a schematic diagram of the internal structure of an energy storage device for a circuit breaker according to the present utility model;

[0030] Figure 4 It is an exploded view of the clutch assembly of an energy storage device for a circuit breaker according to the present utility model

[0031] Figure 5 It is an exploded view of components such as the sun gear, planet gear, planet carrier and ring gear of an energy storage device for a circuit breaker according to the present utility model.

[0032] In the figure: 1. Motor; 2. Transmission assembly; 3. Housing; 301. First housing; 302. Second housing; 3021. First opening; 3022. Second opening; 3023. Clearance part; 3024. Alignment mark; 4. Sun gear; 5. Planet gear; 6. Planet carrier; 7. Pawl part; 701. First convex part; 8. Reset part; 9. Ring gear part; 901. Second convex part; 902. Groove part; 10. Micro switch; 11. Wire fixer. Detailed implementation manners

[0033] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustration of this embodiment, some components in the drawings may be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent.

[0034] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are 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. Therefore, the terms describing the positional relationships in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The technical solutions of the present utility model will be further specifically described below through specific embodiments and in conjunction with the drawings:

[0036] Embodiment 1

[0037] As Figures 1-3As shown in the figure, an energy storage device for a circuit breaker includes: a motor 1, a transmission component 2 connected to the motor 1, a clutch component connected to the transmission component 2, and a housing 3 connected to the motor 1; a cavity is provided inside the housing 3, and both the transmission component 2 and the clutch component are located inside the cavity. A first opening 3021 is provided on the housing 3, and the first opening 3021 is provided at the transmission component 2 or the clutch component. The clutch component is used to connect to an external circuit breaker.

[0038] The motor 1 drives the transmission component 2 and the clutch component. The clutch component is connected to an external circuit breaker, so that power is output from the clutch component to the external circuit breaker, causing the cam of the external circuit breaker to rotate, and then stretching the energy storage spring for energy storage. After the energy storage is completed, the clutch component disconnects the power, and the external circuit breaker drives the end component of the clutch component to rotate in the reverse direction. The end component is the component in the clutch component that is directly connected to the external circuit breaker. At this time, the power released by the external circuit breaker will be interrupted in the clutch component and will not be transmitted back to the transmission component 2; as Figures 1-2 shown in the figure, a cavity is provided inside the housing 3, and protection is achieved by arranging the transmission component 2 and the clutch component inside the cavity. A first opening 3021 is also provided on the housing 3, and the first opening 3021 is located at the clutch component or the transmission component 2, which is convenient for operating the clutch component, convenient for rotating the end component of the clutch component, convenient for installation, and the first opening 3021 is also convenient for filling lubricating oil and observing the operation of the clutch component and the transmission component 2, which is convenient for maintenance.

[0039] Beneficial effects of this embodiment: The housing 3 is provided with a cavity to protect the transmission component 2 and the clutch component. At the same time, a first opening 3021 is provided at the transmission component 2 or the clutch component, which is convenient for manually rotating to operate the clutch component, and then convenient for aligning the clutch component with the external circuit breaker, convenient for installation, and also convenient for observing the operation of the clutch component or the transmission component 2, convenient for filling lubricating oil into the clutch component or the transmission component 2, and convenient for maintenance.

[0040] Embodiment 2

[0041] Based on Embodiment 1, the difference from Embodiment 1 is:

[0042] As Figures 1-5As shown in the figure, the clutch assembly includes a sun gear 4 connected to the transmission assembly 2, a planet gear 5 meshing with the sun gear 4, a planet carrier 6 connected to the planet gear 5, a ring gear member 9 meshing with the planet gear 5, and a locking assembly connected to the housing 3; the locking assembly locks the planet carrier 6 within a set rotation range of the ring gear member 9 and unlocks it otherwise. The sun gear 4 is rotatably connected to the housing 3, the planet gear 5 is rotatably connected to the side of the planet carrier 6, and the ring gear member 9 is used to connect to an external circuit breaker. The locking assembly includes a pawl member 7 rotatably connected to the housing 3, a reset member 8 connected to the pawl member 7, a first protrusion 701 provided on the pawl member 7, and a second protrusion 901 provided on the ring gear member 9; the planet carrier 6 is a ratchet wheel, and the pawl abuts against the ratchet teeth of the planet carrier 6 for locking. The reset member 8 is used to rotate the pawl member 7 for resetting. When the ring gear member 9 rotates to the set angle range, the second protrusion 901 abuts against the first protrusion 701 and pushes up the pawl member 7 to unlock. As Figures 2-4 shown in the figure, the housing 3 is further connected with a normally open microswitch 10. A groove portion 902 is provided on the ring gear member 9. The triggering portion of the microswitch 10 abuts against the ring gear member 9. The microswitch 10 is electrically connected to the motor 1. When the ring gear member 9 rotates to the set angle range, the triggering portion of the microswitch 10 slides into the groove portion 902 and cuts off the current. A second opening 3022 is provided on the housing 3, and the triggering portion of the microswitch 10 extends into the housing 3 from the second opening 3022.

[0043] The clutch assembly of this energy storage device adopts a planetary gear 5 assembly. When transmitting power outward, that is, transmitting power to the circuit breaker, the sun gear 4 rotates, driving the planetary gear 5 to rotate. The planetary gear 5 is rotatably installed on the side of the planet carrier 6. When outputting power, the locking assembly locks the planet carrier 6, and the planetary gear 5 only rotates on its own axis without revolving, and then transmits the power to the ring gear part 9. The ring gear part 9 rotates, driving the cam of the external circuit breaker to rotate for energy storage. The external cam stores and releases energy in the same rotational direction. When rotating to a specific angle, the energy storage spring is stretched to the longest, and the energy storage ends. The set rotation range of the above-mentioned ring gear part 9, that is, the rotation range of the entire energy storage process of the ring gear part 9. At this time, the locking assembly remains locked. When the energy storage ends, the locking assembly is unlocked. At this time, if the power of the motor 1 continues to be input, the sun gear 4 rotates, and the planet carrier 6 will also rotate accordingly. The planetary gear 5 will continue to revolve while rotating on its own axis, unable to transmit the power to the ring gear part 9, and the ring gear part 9 will not rotate accordingly, realizing power separation, and the external energy storage spring can maintain the state after energy storage. When the external circuit breaker needs to close or open, it is necessary to release the elastic force of the energy storage spring. During the energy release process, the ring gear part 9 will be driven to rotate, and at this time, the rotation direction of the ring gear part 9 is the same as that during energy storage. During the energy release rotation process, the planet carrier 6 is always in the unlocked state, and the power will not be transmitted reversely to the transmission assembly 2 until after the energy release ends, and the external circuit breaker no longer provides the power for the ring gear part 9 to rotate, and the locking assembly locks the planet carrier 6 again. Specifically, the ring gear part 9 is a component with internal teeth meshing with the planetary gear 5, and at the same time, the ring gear part 9 is also provided with a connection part connected to the external circuit breaker. The transmission assembly 2 generally adopts a speed reduction transmission assembly 2, and can be transmitted by means of gears, chains or belts, etc. The locking assembly can adopt a telescopic motor or a telescopic cylinder, etc. Within the set rotation range of the ring gear part 9, the telescopic motor or the telescopic cylinder extends to lock the planet carrier 6, and outside the set rotation range, the telescopic motor or the telescopic cylinder resets to unlock. The locking assembly adopts a pawl part 7 as the locking component, and at the same time, the planet carrier 6 is set as a ratchet. When the pawl part 7 abuts against the ratchet teeth of the planet carrier 6, the planet carrier 6 remains in the locked state. Specifically, within the set rotation range of the ring gear part 9, the ring gear part 9 stores energy. At this time, the reset part 8 always makes the pawl part 7 keep abutting against the planet carrier 6, so that the planet carrier 6 remains in the locked state, and then the power can be transmitted to the ring gear part 9 to make the ring gear part 9 rotate for energy storage; during the energy release process, the second protrusion 901 always pushes up the first protrusion 701. At this time, the rotational power of the ring gear part 9 is transmitted to the planet carrier 6 through the planetary gear 5, and the planet carrier 6 rotates, that is, the planetary gear 5 revolves while rotating on its own axis, and the power will not be transmitted to the sun gear 4, and thus cannot be transmitted to the transmission assembly 2, realizing power separation.Since until the energy release ends after the energy storage ends, the second protrusion 901 always pushes up the first protrusion 701, that is, the pawl member 7 never restricts the planet carrier 6. Thus, the clutch response is advanced to the end of energy storage, avoiding untimely clutch response and ensuring sufficient and thorough power separation. When the external circuit breaker releases energy, it can fully ensure that the ring gear member 9 can rotate smoothly, avoiding resistance and affecting the energy release effect, thereby improving the energy release effect. The trigger part of the microswitch 10 abuts against the outer ring of the ring gear member 9 and is energized when abutting. At this time, the motor 1 is powered on and operates to store energy. When the ring gear member 9 rotates to the set angle range, the external circuit breaker has completed energy storage at this time. The trigger part of the microswitch 10 slides into the groove part 902, and at this time the microswitch 10 is de-energized and the motor 1 stops operating to stop energy storage. In this state, it is also the state where the second protrusion 901 pushes up the first protrusion 701. The trigger part of the microswitch 10 is the trigger rod, and the microswitch 10 can be a switch of the rotational trigger or telescopic trigger type.

[0044] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0045] Embodiment 3

[0046] Based on Embodiment 1 or Embodiment 2, Embodiment 1 or Embodiment 2 is further limited. The difference lies in:

[0047] As Figures 1-2 shown, the housing 3 includes a first housing 301 and a second housing 302 connected to the first housing 301. The first opening 3021 and the second opening 3022 are both provided on the second housing 302. The motor 1 and the ring gear member 9 are both connected to the second housing 302. The second housing 302 is provided with a clearance part 3023, and the microswitch 10 is installed at the clearance part 3023. The second opening 3022 is located at the clearance part 3023. The second housing 302 is provided with an alignment mark 3024, and the alignment mark 3024 is used to identify the rotation angle of the ring gear member 9. The ring gear member 9 is provided with a mark corresponding to the alignment mark 3024. A wire fixer 11 is connected to the second housing 302, and the wire fixer 11 is used to fix the connection wire between the microswitch 10 and the motor 1. As Figures 3-4 shown, the pawl member 7 is arranged in the cavity. Both ends of the reset member 8 are connected to the housing 3 and the pawl member 7 respectively, and the reset member 8 is a tension spring.

[0048] The first opening 3021 and the second opening 3022 are arranged on the second housing 302, which is convenient for manufacturing. Connecting the motor 1 and the ring gear member 9 to the second housing 302 facilitates volume reduction. The clearance portion 3023 is provided to facilitate the installation of the micro switch 10 and also helps reduce the volume and save space. The alignment mark 3024 can further facilitate the installation. The alignment mark 3024 can be a scale line or an arrow, etc. The mark on the ring gear member 9 can be set separately or the groove at the connection can be used as the mark. In this solution, the groove at the connection part with the external circuit breaker is used as the mark. The wire fixer 11 is integrally or separately provided with the second housing 302. The pawl member 7 is arranged in the cavity to further save space and prevent the pawl member 7 from being stuck by foreign objects.

[0049] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0050] In the specific content of the above specific implementation manner, the technical features can be combined arbitrarily without contradiction. For the sake of brevity of description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as within the scope described in this specification.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An energy storage device for a circuit breaker, characterized in that, Comprising: a motor (1), a transmission assembly (2) connected to the motor (1), a clutch assembly connected to the transmission assembly (2), and a housing (3) connected to the motor (1); a cavity is provided inside the housing (3), the transmission assembly (2) and the clutch assembly are both located inside the cavity, a first opening (3021) is provided on the housing (3), the first opening (3021) is provided at the transmission assembly (2) or the clutch assembly, and the clutch assembly is used to connect to an external circuit breaker.

2. The energy storage device for a circuit breaker according to claim 1, wherein: The clutch assembly includes a sun gear (4) connected to the transmission assembly (2), a planet gear (5) meshing with the sun gear (4), a planet carrier (6) connected to the planet gear (5), a ring gear member (9) meshing with the planet gear (5), and a locking assembly connected to the housing (3); the locking assembly locks the planet carrier (6) within a set rotation range of the ring gear member (9), and unlocks it otherwise. The sun gear (4) is rotatably connected to the housing (3), the planet gear (5) is rotatably connected to the side of the planet carrier (6), and the ring gear member (9) is used to connect to an external circuit breaker.

3. An energy storage device for a circuit breaker according to claim 2, characterized in that: The locking assembly includes a pawl member (7) rotatably connected to the housing (3), a reset member (8) connected to the pawl member (7), a first protrusion (701) provided on the pawl member (7), and a second protrusion (901) provided on the ring gear member (9); the planet carrier (6) is a ratchet, the pawl abuts against the ratchet teeth of the planet carrier (6) and locks it, the reset member (8) is used to rotate the pawl member (7) and then reset it. When the ring gear member (9) rotates to a set angle range, the second protrusion (901) abuts against the first protrusion (701) and pushes up the pawl member (7) to unlock it.

4. An energy storage device for a circuit breaker according to claim 2, characterized in that: The housing (3) is also connected to a normally open microswitch (10), a groove portion (902) is provided on the ring gear member (9), the trigger portion of the microswitch (10) abuts against the ring gear member (9), the microswitch (10) is electrically connected to the motor (1). When the ring gear member (9) rotates to a set angle range, the trigger portion of the microswitch (10) slides into the groove portion (902) and cuts off the current. A second opening (3022) is provided on the housing (3), and the trigger portion of the microswitch (10) extends into the housing (3) from the second opening (3022).

5. The energy storage device for a circuit breaker according to claim 4, characterized in that: The housing (3) includes a first housing body (301) and a second housing body (302) connected to the first housing body (301), the first opening (3021) and the second opening (3022) are both provided on the second housing body (302), and the motor (1) and the ring gear member (9) are both connected to the second housing body (302).

6. The energy storage device for a circuit breaker according to claim 5, characterized in that: An avoidance portion (3023) is provided on the second housing body (302), the microswitch (10) is installed at the avoidance portion (3023), and the second opening (3022) is located at the avoidance portion (3023).

7. The energy storage device for a circuit breaker according to claim 5, characterized in that: The second housing (302) is provided with alignment marks (3024), and the alignment marks (3024) are used to identify the rotation angle of the ring gear member (9). The ring gear member (9) is provided with marks corresponding to the alignment marks (3024).

8. An energy storage device for a circuit breaker according to claim 5, characterized in that: A wire fixer (11) is connected to the second housing (302), and the wire fixer (11) is used to fix the connection wire between the microswitch (10) and the motor (1).

9. The energy storage device for a circuit breaker according to claim 3, characterized in that: The pawl member (7) is disposed in the cavity.

10. The energy storage device for a circuit breaker according to claim 3, wherein: Both ends of the reset member (8) are respectively connected to the outer housing (3) and the pawl member (7), and the reset member (8) is a tension spring.

Images