Assist handle and plug-in circuit breaker

Abstract

The application relates to a booster handle and plug-in circuit breaker, wherein the plug-in circuit breaker comprises a contact system arranged in a circuit breaker shell, a connector and a driving mechanism, the contact system is connected with an external conductive piece through the connector, the connector is provided with a clamping end for clamping the external conductive piece, the driving mechanism is connected with the connector for locking or unlocking the connector, a handle connecting mechanism is arranged outside the circuit breaker shell, the handle connecting mechanism is in transmission cooperation with the driving mechanism, the booster handle and the plug-in circuit breaker are detachably connected, the driving mechanism can be controlled through the detachable booster handle, the locking and unlocking of the connector are controlled through the driving mechanism, one booster handle can operate multiple different circuit breakers, and the booster handle can also reduce the occupied space of the circuit breaker after being removed.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and in particular to an assistive handle and a plug-in circuit breaker. Background Technology

[0002] Circuit breakers are important electrical components in the low-voltage electrical field. They can connect and disconnect external lines, and automatically cut off the circuit when overcurrent or short circuit occurs in the external lines, thus protecting them. Existing plug-in circuit breakers connect their contact assemblies to the external lines via connectors within the circuit breaker.

[0003] Because connectors have significant clamping force, existing plug-in circuit breakers require considerable effort to insert or remove from their mounting positions, leading to wear on the connectors and external conductors. Therefore, existing plug-in circuit breakers incorporate a drive mechanism to open the connector during tripping, reducing the clamping force on the external conductors. However, the drive mechanism of existing connectors is typically linked to the internal mechanism of the circuit breaker, making it impossible to manually control the connection status between the connector and the external line. This not only affects the stability of the internal mechanism but also reduces its lifespan. If the internal mechanism fails, it can also affect the connector, resulting in a higher risk of failure. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an assist handle and a plug-in circuit breaker.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An assist handle includes a wiring handle, which comprises a handheld portion, a sliding portion, and a connecting portion located between the handheld portion and the sliding portion. The connecting portion is detachably connected to the handle connection mechanism of a plug-in circuit breaker. The sliding portion is slidably engaged with the plug-in circuit breaker. The handheld portion can drive the sliding portion to rotate around the connecting portion, and simultaneously drive the sliding portion to slidably engage with the plug-in circuit breaker. When the sliding portion rotates, it pushes the connecting portion away from or pulls it towards the sliding platform, thereby driving the handle connection mechanism.

[0007] Preferably, the connecting part is provided with a second locking structure for connecting with the handle connecting mechanism of the plug-in circuit breaker.

[0008] Preferably, the second locking structure is a hook structure, or a hole structure, or a groove structure, or a shaft structure, or a buckle structure, or a slot structure.

[0009] Preferably, the sliding part is provided with rollers.

[0010] Preferably, the assist handle further includes a lifting handle, which includes a pivot part, a lifting part, and a lifting part. The lifting part is connected to the connection part of the wiring handle. The pivot part is provided with a first connection structure for detachable connection with the insertion position. Operating the lifting part can drive the lifting part to rotate around the pivot part, so that the lifting part drives the plug-in circuit breaker to move away from the insertion position.

[0011] Preferably, the connecting part includes a connecting shaft that is detachably connected to the wiring handle connector, and the lifting part is connected to the connecting shaft.

[0012] Preferably, the lifting handle includes two lifting parts arranged opposite to each other, with a connecting hole in the middle of the two lifting parts, and the two ends of the connecting shaft connected between the two lifting parts through the connecting hole, and the wiring handle is arranged between the two lifting parts; the two ends of the lifting part are respectively connected to one end of the two lifting parts, and the other ends of the two lifting parts are respectively rotatably connected to the pivot part.

[0013] Preferably, the size of the connecting hole is larger than the outer diameter of the connecting shaft, and the connecting shaft can move along the length direction of the connecting hole within the connecting hole.

[0014] Preferably, the pivot part includes two side plates and a bottom plate arranged opposite to each other. A pivot shaft is provided between one end of the two side plates and a bottom plate is provided between the other ends. The other ends of the two lifting parts are rotatably connected to the two side plates respectively. A first connecting structure for connecting to the insertion position is provided on the bottom plate.

[0015] Preferably, the first connecting structure is a locating pin.

[0016] Preferably, the wiring handle includes two wiring handle side plates arranged at relative intervals, with the middle of the two wiring handle side plates serving as a connecting part. The connecting part is provided with a shaft hole, through which a connecting shaft passes and connects to the connecting part. One end of the two wiring handle side plates is respectively connected to both ends of the hand-held part, and the other end of the two wiring handle side plates serves as a sliding part.

[0017] A plug-in circuit breaker includes a contact system, a connector, and a drive mechanism disposed within a circuit breaker housing. The contact system is connected to an external conductive element via the connector. The connector has a clamping end for clamping the conductive element. The drive mechanism is connected to the connector for locking or unlocking the connector. A handle connection mechanism is disposed outside the circuit breaker housing, and the handle connection mechanism is in a transmission engagement with the drive mechanism.

[0018] Preferably, the handle connection mechanism includes a first locking structure for connecting to the power assist handle.

[0019] Preferably, the first locking structure is a hook structure, or a hole structure, or a groove structure, or a shaft structure, or a buckle structure, or a slot structure.

[0020] Preferably, the handle connection mechanism includes a wired handle connector, one end of which is hinged to the drive mechanism, and the other end of which is detachably connected to the power assist handle.

[0021] Preferably, the circuit breaker housing has an operating panel with a receiving groove, one end of the wiring handle connector is located in the receiving groove and hinged to the drive mechanism, and the other end rotates between the inner and outer sides of the receiving groove.

[0022] Preferably, it includes a cover plate for covering the receiving groove.

[0023] Preferably, the drive mechanism includes a rotating mechanism and a linear transmission mechanism. The rotating mechanism is rotatably mounted on the connector, one end of the transmission mechanism cooperates with the rotating mechanism, and the other end is provided with the handle connection mechanism.

[0024] Preferably, the drive mechanism further includes a linkage mechanism located between the rotating mechanism and the transmission mechanism. Multiple rotating mechanisms are rotatably mounted on multiple connectors and connected to the linkage mechanism respectively. The transmission mechanism drives the multiple rotating mechanisms to rotate through the linkage mechanism. When the transmission mechanism moves linearly to push the linkage mechanism, the linkage mechanism compresses the reset spring and drives the rotating mechanism to rotate to one side. When the transmission mechanism moves away from the linkage mechanism, the reset spring drives the linkage mechanism to drive the rotating mechanism to rotate to the other side to reset.

[0025] Preferably, an assist handle is also installed that is detachably connected to the handle connection mechanism.

[0026] Preferably, the assist handle includes a wiring handle, which is detachably connected to the handle connection mechanism, and the wiring handle drives the drive mechanism to lock or unlock the connector; or, the assist handle includes a lifting handle, which is detachably connected to the handle connection mechanism and detachably connected to the insertion position of the plug-in circuit breaker, and the lifting handle drives the plug-in circuit breaker to move relative to the insertion position through the handle connection mechanism.

[0027] Preferably, the assist handle is the assist handle created by the present invention.

[0028] The plug-in circuit breaker of this invention has a handle connection mechanism that is detachably connected to an assist handle outside the circuit breaker housing. The handle connection mechanism is connected to a drive mechanism. The drive mechanism can be controlled by the detachable assist handle, and the locking and unlocking of the connector can be controlled by the drive mechanism. This not only allows one assist handle to operate multiple different circuit breakers, but also reduces the space occupied by the circuit breaker when the assist handle is removed.

[0029] The assist handle created by this invention includes a wiring handle. The wiring handle drives the drive mechanism through the handle connection mechanism to lock or unlock the connector, so that one assist handle can operate multiple different circuit breakers. Moreover, the assist handle can reduce the space occupied by the circuit breaker after it is removed.

[0030] Furthermore, the assist handle created by this invention includes a wiring handle and a lifting handle, which are integrated into one piece. The wiring handle drives the drive mechanism to lock or unlock the connector through the handle connection mechanism. The lifting handle drives the plug-in circuit breaker to move relative to the insertion position through the handle connection mechanism, thereby pulling the plug-in circuit breaker out of the insertion position. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the circuit breaker described in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the wiring handle and lifting handle according to an embodiment of the present invention;

[0033] Figure 3 This is an exploded view of the wiring handle and lifting handle described in the embodiments of the present invention;

[0034] Figure 4 It is the connector in the clamped state as described in the embodiments of the present invention;

[0035] Figure 5 This is as described in the embodiments of the present invention. Figure 4 A schematic diagram of the structure behind the concealed circuit breaker housing;

[0036] Figure 6 It is the connector in the open state as described in the embodiments of the present invention;

[0037] Figure 7 This is as described in the embodiments of the present invention. Figure 6 A schematic diagram of the structure behind the concealed circuit breaker housing;

[0038] Figure 8 This is the position of the circuit breaker after it has been moved, as described in the embodiment of this invention.

[0039] Figure 9 This is as described in the embodiments of the present invention. Figure 8 A schematic diagram of the structure behind the concealed circuit breaker housing;

[0040] Figure 10 It is the connector in the clamped state after the circuit breaker is moved, as described in the embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the connector structure described in an embodiment of the present invention;

[0042] Figure 12 This is an exploded view of the connector described in an embodiment of the present invention;

[0043] Figure 13 This is a schematic diagram of the camshaft structure according to an embodiment of the present invention. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1 to 13 The given embodiments further illustrate specific implementations of the present invention. The assisted handle and plug-in circuit breaker of the present invention are not limited to the descriptions of the following embodiments.

[0045] like Figure 1-3 As shown, the plug-in circuit breaker of this invention includes an operating mechanism, a contact system, a connector 4, and a drive mechanism disposed within the circuit breaker housing 1. The contact system is connected to an external conductive component via the connector 4. The connector 4 is provided with a clamping end for clamping the conductive component. The drive mechanism is connected to the connector 4 for locking or unlocking the connector 4. A handle connection mechanism is provided outside the circuit breaker housing 1 for detachably connecting to an assist handle. The handle connection mechanism is in a transmission cooperation with the drive mechanism. After the assist handle is assembled and connected to the handle connection mechanism, it is connected to the drive mechanism inside the circuit breaker housing 1 through the handle connection mechanism. The assist handle drives the drive mechanism to lock or unlock the connector 4.

[0046] The plug-in circuit breaker of this invention is provided with a handle connection mechanism that is detachably connected to the assist handle. The drive mechanism is controlled by the detachable assist handle, and the locking and unlocking of the connector is controlled by the drive mechanism. This not only allows one assist handle to operate multiple different circuit breakers, but also reduces the space occupied by the circuit breaker when the assist handle is removed.

[0047] Furthermore, the assist handle includes a wiring handle 10 and / or a lifting handle 20. The wiring handle 10 is detachably connected to the handle connection mechanism, and the wiring handle 10 drives the drive mechanism to lock or unlock the connector 4. The plug-in circuit breaker is inserted into the insertion position. The lifting handle 20 is detachably connected to the handle connection mechanism and also detachably connected to the insertion position of the plug-in circuit breaker. The lifting handle 20 drives the plug-in circuit breaker to move relative to the insertion position through the handle connection mechanism, thereby pulling the plug-in circuit breaker out of the insertion position. In this embodiment, the insertion position is the insertion frame of the cabinet 5, which is one specific implementation of the insertion position. The insertion position can also be a wall, a distribution box, etc. The aforementioned handle connection structure can be one or more.

[0048] like Figure 1-3The embodiment shown describes a plug-in circuit breaker, which includes an operating mechanism, a contact system, a connector 4, and a drive mechanism disposed within the circuit breaker housing. The contact system includes a moving contact and a stationary contact. The moving contact is connected to the operating mechanism, which drives the moving contact to swing and cooperate with the stationary contact to achieve the opening and closing of the circuit breaker. The moving contact and the stationary contact of the contact system are respectively connected to external conductive components through the connector 4. The connector 4 is provided with a clamping end for clamping the external conductive component. The drive mechanism is connected to the connector 4 for locking or unlocking the connector 4.

[0049] An improvement of this invention lies in the inclusion of a handle connection mechanism on the outside of the circuit breaker housing 1. This handle connection mechanism is driven by a drive mechanism and is used for detachable connection with an assist handle, facilitating the installation of the assist handle. Preferably, the handle connection mechanism includes a first locking structure for connection with the assist handle, and the assist handle has a second locking structure detachably connected to the first locking structure. The first and second locking structures are engaged or limit-blockingly connected. This limit-blocking action means that the first and second locking structures limit the force applied to the assist handle, driving the drive mechanism of the plug-in circuit breaker; however, they may not limit the force applied in other directions. Figure 1 In the described embodiment, the handle connection mechanism includes a wired handle connector 30. The wired handle connector 30 is provided with a hook structure for connecting to the connecting shaft 111 on the assist handle. Through the connection shaft 111 on the assist handle and the handle connection mechanism with the hook structure, the assist handle can be easily installed and removed without any installation tools. The hook structure is a first locking structure, and the connecting shaft 111 is a second locking structure, forming a limiting and blocking fit. It is understood that the first locking structure can also adopt other shapes. For example, the wired handle connector 30 can adopt a hole structure, a groove structure, or a shaft structure. If the first locking structure is a hole structure, the connecting shaft 111 of the assist handle, which serves as the second locking structure, can pass through the hole structure for connection. If the first locking structure is a groove structure, the connecting shaft 111 of the assist handle extends into the groove structure. If the first locking structure is a shaft structure, for example, a shaft protrusion is provided on the wired handle connector 30, then the second locking structure can correspondingly adopt a hook structure, a hole structure, or a groove structure, etc. In another embodiment, the first locking structure can also be a slot structure or a buckle structure disposed on the handle connecting mechanism, and the corresponding second locking structure can be a buckle structure or a slot structure disposed on the assist handle, with the buckle structure inserted into the slot structure for a snap-fit ​​connection. Furthermore, in another embodiment, the assist handle and the handle connecting mechanism of the plug-in circuit breaker can also be connected by screws, which is also within the scope of this application. However, screw connections require installation tools and are not as convenient as the locking structure.

[0050] like Figure 1 As shown, one embodiment of the handle connection mechanism includes a wiring handle connector 30. The wiring handle connector 30 has a sheet-like structure and a receiving groove is provided on the operation panel at one end of the circuit breaker housing 1. One end of the wiring handle connector 30 is located in the receiving groove and hinged to the drive mechanism, while the other end rotates between the inner and outer sides of the receiving groove. The other end of the wiring handle connector 30 can be rotatably placed in the receiving groove for retraction, or rotatably extended out of the receiving groove for connection with the assist handle. Preferably, the operation panel at one end of the plug-in circuit breaker also has a connection mechanism cover plate for covering the receiving groove. The connection mechanism cover plate is pivotally mounted. When the assist handle is not connected, the wiring handle connector 30 is rotatably placed in the receiving groove, and the connection mechanism cover plate is closed. See also Figure 3 When it is necessary to connect the assist handle, open the connecting mechanism cover, rotate the hook structure out, and connect it to the assist handle. It should be noted that in this embodiment, the wiring handle connector 30 is hinged to the drive mechanism. As another inferior embodiment, the handle connector 30 can also be fixedly connected to the drive mechanism, or integrally formed with the drive mechanism, for example, integrally formed with the transmission mechanism 31 of the drive mechanism.

[0051] Preferred, such as Figure 1-2 As shown, the assist handle includes a wiring handle 10 and a lifting handle 20. The wiring handle 10 is mounted on the lifting handle 20, and the two are integrated. They are connected to the plug-in circuit breaker via a handle connection mechanism, and the lifting handle 20 is detachably connected to the cabinet 5. The wiring handle 10 drives the drive mechanism to lock or unlock the connector 4. When the circuit breaker is pulled out of the cabinet via the lifting handle 20, it is not only convenient to remove the circuit breaker from the cabinet 5, but also, in case of connector failure, if the wiring handle 10 cannot control the connector 4, the circuit breaker can be directly pulled out via the lifting handle 20, effectively ensuring safety. Of course, the assist handle can be configured with only the wiring handle 10 or the lifting handle 20 as needed.

[0052] like Figure 2-3As shown, the wiring handle 10 of this embodiment includes a hand-held part 12, a sliding part 13, and a connecting part 11 located between the hand-held part 12 and the sliding part 13. The connecting part 11 is used to detachably connect with the handle connecting mechanism of the plug-in circuit breaker. The sliding part 13 is used to slide and engage with the plug-in circuit breaker. The hand-held part 12 can drive the sliding part 13 to rotate around the connecting part 11, and at the same time drive the sliding part 13 to slide and engage with the plug-in circuit breaker. When the sliding part 13 rotates, it pushes the connecting part 11 away from or pulls it toward the sliding platform 6, drives the handle connecting mechanism, and drives the driving mechanism to lock or unlock the connector 4. A sliding platform 6 is provided on the operation panel at one end of the circuit breaker housing 1. The connecting part 11 is detachably connected to the handle connecting mechanism. The sliding part 13 is slidably engaged with the sliding platform 6. The hand-held part 12 can drive the sliding part 13 to rotate around the connecting part 11, and at the same time drive the sliding part 13 to slide with the sliding platform 6. When the sliding part 13 rotates and slides between the connecting part 11 and the sliding platform 6, it pushes the connecting part 11 away from the sliding platform 6. When the sliding part 13 rotates and moves away from the hand-held part 12 and the sliding platform 6, the connecting part 11 moves closer to the sliding platform 6. When the connecting part 11 moves closer to and away from the sliding platform 6, the connector 4 is locked or unlocked by the drive mechanism.

[0053] Preferably, the connecting part 11 is provided with a second locking structure for connecting with the handle connecting mechanism of the plug-in circuit breaker. The second locking structure engages with the first locking structure of the handle connecting mechanism via a snap-fit ​​connection or a limiting stop, eliminating the need for any installation tools. Preferably, the second locking structure is a hook structure, or a hole structure, or a groove structure, or a shaft structure, or a snap-fit ​​structure, or a slot structure.

[0054] In this embodiment, the connecting part 11 includes a connecting shaft 111 that is detachably connected to the wiring handle connector 30. The connecting part 11 serves as the rotation center of the wiring handle 10, allowing the connector 4 to be locked or unlocked as the connecting part 11 moves closer to and away from the sliding platform 6. Since the connecting part 11 moves in a straight line, the wiring handle connector 30 only needs to be located on the straight line of the connecting part 11's movement. This not only reduces the size of the drive mechanism but also makes the cooperation between the connecting part 11 and the wiring handle connector 30 more reliable.

[0055] Specifically, the wiring handle 10 includes two wiring handle side plates spaced apart from each other. The middle of the two wiring handle side plates serves as a connecting part 11. The connecting part 11 is provided with a connecting shaft 111 that mates with the wiring handle connector 30. The connecting part 11 has a shaft hole 15, through which the connecting shaft 111 passes and connects to the connecting part 11. The connecting shaft 111 passes through the hook structure of the wiring handle connector 30 to achieve connection. Disassembly is achieved by pulling out the connecting shaft 111. This design features a simple structure and convenient operation. One end of each of the two wiring handle side plates is connected to both ends of the handheld part 12, forming a U-shaped structure. The other end of the two wiring handle side plates serves as a sliding part 13. Furthermore, the wiring handle side plates are bent into a V-shaped structure, including a bent and connected first side plate and a second side plate. The handheld part 12 is connected to the two handheld parts 12. The connecting part 11 and the sliding part 13 are located on the second side plate for easy operation and force application. Furthermore, a corresponding connecting fixing rod can also be provided between the other ends of the two wiring handle side plates for reinforcement. Furthermore, the sliding part 13 is provided with rollers 14 that cooperate with the sliding platform 6. The rollers 14 are mounted on the roller holes 16 of the sliding part via roller shafts. The rolling cooperation between the rollers 14 and the sliding platform 6 reduces friction. In this embodiment, two sets of rollers 14 are provided, and the number of rollers 14 can be adjusted. Of course, rollers 14 can also be omitted, and the sliding part 13 can also slide with the sliding platform 6 via an arc surface, all of which fall within the protection scope of this invention. Of course, the connecting part 11 can also be connected to the wiring handle connector 30 in other ways, such as by providing an integrally formed boss shaft as a connecting shaft 111 on the connecting part 11, all of which fall within the protection scope of this invention.

[0056] like Figure 2-3 As shown, the lifting handle 20 in this embodiment includes a pivot part 21, a lifting part 22, and a lifting part 23. The lifting part 23 is detachably connected to the handle connecting mechanism. The pivot part 21 has a first connecting structure for detachable connection with the insertion position. The pivot part 21 is detachably connected to the cabinet 5. Operating the lifting part 22 can drive the lifting part 23 to rotate around the pivot part 21, causing the lifting part 23 to move the plug-in circuit breaker away from the insertion position, thus helping to remove the plug-in circuit breaker from the cabinet. It can be understood that although the lifting handle 20 in this embodiment adopts a rotating method with its rotation center located at one end, the lifting handle 20 can also have its rotation center located in the middle. In addition, the lifting handle 20 can also adopt a vertical linear movement method, which is also within the protection scope of this invention. When the power assist handle includes both the wiring handle 10 and the lifting handle 20, the lifting part 23 of the lifting handle 20 is connected to the connecting part 11 of the wiring handle 10. The connecting part 11 of the wiring handle 10 is detachably connected to the handle connecting mechanism. In this embodiment, the lifting part 23 is connected to the connecting shaft 111.

[0057] Furthermore, the lifting handle 20 includes two lifting parts 23 arranged opposite to each other, and a connecting shaft 111 connected to the handle connecting mechanism is provided between the two lifting parts 23. The connecting part 11 of the wiring handle 10 is mounted on the connecting shaft 111, and the two are integrally set and connected to the handle connecting mechanism through the connecting shaft 111, and assembled in one go. Specifically, the lifting handle 20 includes two lifting parts 23 arranged opposite to each other, and an elongated connecting hole 231 is provided in the middle of the two lifting parts 23. The two ends of the connecting shaft 111 are connected between the two lifting parts 23 through the connecting hole 231. The wiring handle 10 is disposed between the two lifting parts 23. The two ends of the lifting part 22 are respectively connected to one end of the two lifting parts 23, and the other ends of the two lifting parts 23 are respectively rotatably connected to the pivot part 21. The pivoting part 21 includes two side plates 211 and a bottom plate 212 arranged opposite to each other. A pivoting shaft 24 is provided between one end of the two side plates 211 and a bottom plate 212 is provided between the other ends. The other ends of the two lifting parts 23 are rotatably connected to the two side plates 211 through the pivoting shaft 24 respectively. A first connection structure for connecting to the cabinet 5 is provided on the bottom plate 212.

[0058] Furthermore, the lifting part 23 is provided with a connecting hole 231 that mates with the connecting shaft 111. The size of the connecting hole 231 is larger than the outer diameter of the connecting shaft 111, allowing the connecting shaft 111 to move along the length of the connecting hole 231. The lifting part 23 can drive the connecting hole 231 to push the connecting shaft 111 to move. By moving the connecting shaft 111 in the connecting hole 231, the position of the wiring handle 10 can be adjusted, making the wiring handle 10 suitable for circuit breakers of different sizes, thus broadening its applicability and facilitating its widespread use. Moreover, when the hand-held part 12 of the wiring handle 10 drives the sliding part 13 to rotate around the connecting part 11, it simultaneously drives the sliding part 13 to slide and engage with the sliding platform 6 of the plug-in circuit breaker. This allows the connecting part 11 to move along the length of the connecting hole 231 with the connecting shaft 111, thereby driving the drive mechanism to unlock or lock the connector 4. Of course, the inner diameter of the connecting hole 231 can also match the connecting shaft 111, allowing the connecting shaft 111 to pass through the connecting hole 231 and rotate to connect with the lifting part 23.

[0059] Specifically, one end of each of the two lifting sections 23 is connected to the lifting section 22 through the upper mounting hole 233, and the other end of each of the two lifting sections 23 is connected to the pivot shaft 24 through the lower mounting hole 234. The pivot shaft 24 is rotatably connected to the pivot section 21. The wiring handle 10 is located between the two lifting sections 23. The circuit breaker is provided with wiring handle connectors 30 on the outer side of each of the two lifting sections 23. Both ends of the connecting shaft 111 pass through the lifting section 23 and cooperate with the wiring handle connectors 30. The two side plates 211 of the pivot section 21 are provided with pivot holes 240 that connect to the pivot shaft 24. The base plate 212 is provided with pin holes 217 that connect to the positioning pin 213. The positioning pin 213 is detachably connected to the cabinet 5.

[0060] In this embodiment, by placing the wiring handle 10 inside the lifting handle 20, not only is sufficient strength of the lifting handle 20 ensured, but the internal space of the lifting handle 20 is also effectively utilized to accommodate the wiring handle 10. This results in a compact and reliable structure with a small size. It is understood that the wiring handle 10 can also be placed in other positions on the lifting handle 20, and the wiring handle connector 30 is also located inside the two lifting parts 23 and mates with the connecting shaft 111.

[0061] In this embodiment, the lifting handle 20 is detachably connected to the cabinet 5, allowing the lifting handle 20 and the wiring handle 10 to be used as a single unit on multiple different circuit breakers. Preferably, the first connection structure is a positioning pin 213. The cabinet 5 has a positioning hole 51 that mates with the positioning pin 213. The lifting handle 20 is connected to the cabinet 5 via the positioning pin 213. The connection between the lifting handle 20 and the cabinet 5 is very simple. When operating the lifting handle 20, the force acting on the base plate 212 of the pivot 21 is directed towards the positioning hole 51, pressing the lifting handle 20 against the cabinet 5. This makes it easy to assemble and disassemble without additional tools, requiring only the insertion of the positioning pin 213 into the positioning hole 51. It is understood that a handle positioning hole can also be provided on the pivot 21, and a positioning pin can be provided on the cabinet 5 to achieve the same fit; both fall within the scope of protection of this invention. Only the frame of the cabinet 5 is shown in the figure; obviously, the cabinet 5 can also have other structures.

[0062] Preferably, the positioning hole 51 includes an insertion portion 52 for avoiding the positioning pin 213, and a limiting portion 53 communicating with one side of the insertion portion 52. The inner diameter of the limiting portion 53 is smaller than the inner diameter of the insertion portion 52. The positioning pin 213 has a mounting head 214 and a guide head 216 at its two ends, respectively. The mounting head 214 is connected to the base plate 212, and the guide head 216 is circular to facilitate passing through the insertion portion 52. A limiting step 215 is provided between the mounting head 214 and the guide head 216, allowing the positioning pin 213 to first pass through the insertion portion 52 and then slide into the limiting portion 53, so that the limiting step 215 abuts against the other side for limiting. This embodiment has two sets of positioning holes 51 and positioning pins 213, with the limiting portions 53 of the two sets of positioning holes 51 located on the same side of the insertion portion 52. It is understood that other methods can also be used to detachably connect the cabinet 5 and the lifting handle 20; no specific limitation is made here.

[0063] The operation process of the assist handle in this embodiment is as follows:

[0064] Install the positioning pin 213 on the lifting handle 20 onto the cabinet 5, and hang the wiring handle connector 30 on the circuit breaker onto the connecting shaft 111 of the lifting handle 20 to complete the installation. No tools are required. Then start the operation.

[0065] Figure 4-5 To lock the connector in the clamped position with the external conductor in place, rotate the wiring handle 10 clockwise to... Figure 6-7 As shown, the wiring handle 10 unlocks the connector via the drive mechanism, thereby unlocking the connector and releasing the external conductor, facilitating the next step of removing the circuit breaker from the external conductor.

[0066] Will Figure 6-7 The lifting handle 20 is rotated clockwise to Figure 8-9 As shown, the lifting handle 20 moves the circuit breaker upward via the wiring handle 10, while the cabinet 5 and the external conductor remain stationary, allowing the circuit breaker to move away from the external conductor. Then, the wiring handle 10 is rotated counterclockwise to... Figure 10 Position, so that the connector is reset.

[0067] It should be noted that the assist handle can obviously also be provided with only the wiring handle 10 or the lifting handle 20, both of which fall within the protection scope of this invention.

[0068] like Figure 5 , 7As shown in Figure 9, one embodiment of a drive mechanism includes a rotating mechanism 32 and a transmission mechanism 31. The rotating mechanism 32 is rotatably mounted on the connector 4, and the transmission mechanism 31 is linearly disposed within the circuit breaker housing 1. One end of the transmission mechanism 31 engages with the rotating mechanism 32, and the other end is provided with the handle connection mechanism. The reciprocating linear movement of the transmission mechanism 31 drives the rotating mechanism 32 to rotate, locking or unlocking the connector 4. The wiring handle connector 30 of the handle connection mechanism is hinged to one end of the transmission mechanism 31, facilitating rotation and placement into the receiving groove. As another embodiment, the wiring handle connector 30 can also be fixedly connected to the transmission mechanism 31 or integrally formed.

[0069] Preferably, the driving mechanism further includes a linkage mechanism 33. The linkage mechanism 33 is provided between the rotating mechanism 32 and the transmission mechanism 31. The linkage mechanism 33 is slidably disposed within the circuit breaker housing 1. The linkage mechanism 33 synchronously drives multiple connectors 4 to unlock or lock. Multiple rotating mechanisms 32 are respectively rotatably mounted on multiple connectors 4 and respectively connected to the linkage mechanism 33. The transmission mechanism 31 drives multiple rotating mechanisms 32 to rotate through the linkage mechanism 33. When the circuit breaker is a two-pole, three-pole, or more-pole circuit breaker, the linkage mechanism 33 is preferentially used to synchronously drive the connectors 4 of each stage of the contact system. When the circuit breaker is a single-pole circuit breaker, the linkage mechanism 33 is obviously not required.

[0070] Preferably, the driving mechanism includes a rotating mechanism 32 and a transmission mechanism 31, and a linkage mechanism 33 connected to a return spring 34 and disposed between the rotating mechanism 32 and the transmission mechanism 31. The wiring handle connector 30 is disposed on the transmission mechanism 31. When the transmission mechanism 31 moves linearly to push the linkage mechanism 33, the linkage mechanism 33 compresses the return spring 34 and drives the rotating mechanism 32 to rotate to one side. When the transmission mechanism 31 moves away from the linkage mechanism 33, the return spring 34 drives the linkage mechanism 33 to drive the rotating mechanism 32 to rotate to the other side to reset. The transmission mechanism 31 has a rod-shaped structure, and the rotating mechanism 32 is a rocker arm. One end of the rocker arm is rotatably mounted on the connector 4, and the other end is connected to the linkage mechanism 33 through a rocker arm drive shaft.

[0071] In this embodiment, two linearly moving transmission mechanisms 31 are provided on both sides of the circuit breaker housing 1. The operation panel of the circuit breaker housing 1 is provided with a handle hole for the circuit breaker handle to extend in the middle. A sliding platform 6 is provided on both sides of the handle hole. The sliding platform 6 is a plane, inclined surface or sliding groove on the operation panel. The sliding parts 13 on both sides of the wiring handle 10 are slidably arranged on both sides of the handle hole and cooperate with the sliding platform 6.

[0072] like Figure 11-13The connector 4 shown is provided with a clamping end for clamping an external conductor. In this embodiment, the connector 4 includes two sets of conductive structures 41 arranged opposite each other. Each set of conductive structures 41 is rotatable around its own center, and the rotation centers of the two sets of conductive structures 41 can move closer together or further apart. Two clamping ends are formed at both ends of the two sets of conductive structures 41. One end of each set of conductive structures 41 is used to clamp an internal conductor, and the other end is used to clamp an external conductor. In the figure, the internal conductor is an external conductor 48, and the external conductor is an internal conductor 47. The external conductor 48 is connected to the contact system inside the plug-in circuit breaker, and the internal conductor 47 is connected to an external circuit.

[0073] The outer sides of the two sets of conductive structures 41 are respectively provided with elastic clamping mechanisms for driving the two sets of conductive structures 41 to approach each other. The elastic clamping mechanism includes an elastic sheet 42. An opening mechanism controlled by the driving mechanism of this embodiment is provided between the two sets of conductive structures 41. Under the control of the driving mechanism, the opening mechanism can push open and avoid the two sets of conductive structures 41.

[0074] The opening mechanism includes a camshaft 43 disposed between two sets of conductive structures 41 and an operating shaft 44 disposed at both ends of the axis of the camshaft 43. The operating shaft 44 is connected to the rotating mechanism 32. The camshaft 43 includes a radially arranged long diameter portion 46 and a short diameter portion 45. The rotating mechanism 32 drives the camshaft 43 to rotate so that when the long diameter portion 46 corresponds to the two sets of conductive structures 41, it can push open the two sets of conductive structures 41 to unlock the connector 4, releasing the clamping of the external conductive component and the external conductive body 48. The short diameter portion 45 is used to avoid the two sets of conductive structures 41. When the rotating mechanism 32 drives the camshaft 43 to rotate so that the short diameter portion 45 corresponds to the two sets of conductive structures 41, the elastic clamping mechanism drives the two sets of conductive structures 41 to approach the locking connector 4, thereby clamping the external conductive component and the external conductive body 48 by driving the two sets of conductive structures 41. In other embodiments of connector 4, the camshaft 43 can also be located on the outside of the conductive structure 41, pushing the conductive structure 41 inward to clamp the internal conductor 47. Alternatively, the camshaft 43 can be located on the inside of the conductive structure 41, pushing one end of the conductive structure 41 to clamp the internal conductor 47 via a lever principle. Furthermore, the driving mechanism can also only drive the conductive structure 41 to clamp the internal conductor 47; when the conductive structure 41 is not driven to clamp, it is equivalent to opening the conductive structure 41.

[0075] In another embodiment of connector 4, connector 4 includes two sets of conductive structures. One set of conductive structures is fixedly installed, and the other set of conductive structures is rotatably installed via an elastic element. A clamping end for clamping an external conductor is formed only between one end of the two sets of conductive structures. The elastic element drives the other set of conductive structures to rotate to one side, causing the clamping end to clamp the external conductor and lock connector 4. A driving mechanism can drive the other set of conductive structures to rotate to the other side, causing the clamping end to release the clamp on the external conductor and unlock connector 4. The fixed set of conductive structures can be a straight fixed conductive plate, which can be electrically connected to the contact system of a circuit breaker. The rotatably installed other set of conductive structures can be a conductive structure 41. An opening mechanism connected to the driving mechanism can be provided between the other end of the two sets of conductive structures away from the clamping end for clamping the external conductor. The opening mechanism can be a camshaft structure.

[0076] In other embodiments of connector 4, connector 4 may further include a fixedly mounted fixed conductive plate and a fixedly mounted elastic plate, with a clamping end for clamping an external conductive body formed between the elastic plate and the fixed conductive plate, and an opening mechanism capable of driving the elastic plate to deform connected to the driving mechanism. All of these fall within the protection scope of this invention.

[0077] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An assist handle, comprising a lifting handle (20) for moving a plug-in circuit breaker relative to its insertion position, characterized in that: The device includes a wiring handle (10) mounted on a lifting handle (20) for locking or unlocking the connector (4) of the plug-in circuit breaker. The wiring handle (10) includes a hand-held part (12), a sliding part (13), and a connecting part (11) located between the hand-held part (12) and the sliding part (13). The connecting part (11) is detachably connected to the handle connection mechanism of the plug-in circuit breaker. The sliding part (13) is slidably engaged with the plug-in circuit breaker. The hand-held part (12) can drive the sliding part (13) to rotate around the connecting part (11) and simultaneously drive the sliding part (13) to slide into the plug-in circuit breaker. When the sliding part (13) rotates, it pushes or pulls the connecting part (11) away from or towards the plug-in circuit breaker, thereby driving the handle connection mechanism to lock or unlock the connector (4) of the plug-in circuit breaker.

2. The power assist handle according to claim 1, characterized in that: The connecting part (11) is provided with a second locking structure for connecting with the handle connecting mechanism of the plug-in circuit breaker.

3. The power assist handle according to claim 2, characterized in that: The second locking structure is a hook structure, or a hole structure, or a groove structure, or a shaft structure, or a buckle structure, or a slot structure.

4. The assist handle according to claim 1, characterized in that: The sliding part (13) is provided with a roller (14).

5. The assist handle according to any one of claims 1-4, characterized in that: The lifting handle (20) includes a pivot (21), a lifting part (22) and a lifting part (23). The lifting part (23) is connected to the connecting part (11) of the wiring handle (10). The pivot (21) is provided with a first connecting structure for detachable connection with the insertion position. Operating the lifting part (22) can drive the lifting part (23) to rotate around the pivot (21), so that the lifting part (23) drives the plug-in circuit breaker to move away from the insertion position.

6. The power assist handle according to claim 5, characterized in that: The connecting part (11) includes a connecting shaft (111) that is detachably connected to the wiring handle connector (30), and the lifting part (23) is connected to the connecting shaft (111).

7. The assist handle according to claim 6, characterized in that: The lifting handle (20) includes two lifting parts (23) arranged opposite to each other. A connecting hole (231) is provided in the middle of the two lifting parts (23). The two ends of the connecting shaft (111) are connected between the two lifting parts (23) through the connecting hole (231). The wiring handle (10) is arranged between the two lifting parts (23). The two ends of the lifting part (22) are respectively connected to one end of the two lifting parts (23), and the other ends of the two lifting parts (23) are respectively rotatably connected to the pivot part (21).

8. The assist handle according to claim 7, characterized in that: The size of the connecting hole (231) is larger than the outer diameter of the connecting shaft (111), and the connecting shaft (111) can move in the connecting hole (231) along the length direction of the connecting hole (231).

9. The assist handle according to claim 7, characterized in that: The pivot part (21) includes two side plates (211) and a bottom plate (212) arranged opposite to each other. A pivot shaft (24) is provided between one end of the two side plates (211) and a bottom plate (212) is provided between the other ends. The other ends of the two lifting parts (23) are rotatably connected to the two side plates (211) respectively. A first connection structure connected to the insertion position is provided on the bottom plate (212).

10. The power assist handle according to claim 5, characterized in that: The first connection structure is a positioning pin (213).

11. The assist handle according to claim 6, characterized in that: The wiring handle (10) includes two wiring handle side plates arranged at relative intervals. The middle part of the two wiring handle side plates serves as a connecting part (11). The connecting part (11) is provided with a shaft hole (15). A connecting shaft (111) passes through the shaft hole (15) and connects to the connecting part (11). One end of the two wiring handle side plates is connected to both ends of the hand-held part (12), and the other end of the two wiring handle side plates serves as a sliding part (13).

12. A plug-in circuit breaker, comprising a contact system, a connector (4), and a drive mechanism disposed within a circuit breaker housing (1), wherein the contact system is connected to an external conductive element via the connector (4), the connector (4) having a clamping end for clamping the conductive element, and the drive mechanism being connected to the connector (4) for locking or unlocking the connector (4), characterized in that: A handle connection mechanism is provided outside the circuit breaker housing (1), the handle connection mechanism is driven by the drive mechanism, and an auxiliary handle is also installed that is detachably connected to the handle connection mechanism. The auxiliary handle is the auxiliary handle as described in any one of claims 1-11.

13. The plug-in circuit breaker according to claim 12, characterized in that: The handle connection mechanism includes a first locking structure for connecting to the power assist handle.

14. The plug-in circuit breaker according to claim 13, characterized in that: The first locking structure is a hook structure, or a hole structure, or a groove structure, or a shaft structure, or a buckle structure, or a slot structure.

15. The plug-in circuit breaker according to claim 12, characterized in that: The handle connection mechanism includes a wired handle connector (30), one end of which is hinged to the drive mechanism, and the other end of which is detachably connected to the power assist handle.

16. The plug-in circuit breaker according to claim 15, characterized in that: A receiving groove is provided on the operation panel of the circuit breaker housing (1). One end of the wiring handle connector (30) is located in the receiving groove and is hinged to the drive mechanism, while the other end rotates between the inner and outer sides of the receiving groove.

17. The plug-in circuit breaker according to claim 16, characterized in that: Includes a cover plate for the connecting mechanism used to cover the receiving groove.

18. The plug-in circuit breaker according to claim 12, characterized in that: The drive mechanism includes a rotating mechanism (32) and a linear transmission mechanism (31). The rotating mechanism (32) is rotatably mounted on the connector (4). One end of the transmission mechanism (31) cooperates with the rotating mechanism (32), and the other end is provided with the handle connection mechanism.

19. The plug-in circuit breaker according to claim 12, characterized in that: The driving mechanism also includes a linkage mechanism (33) located between the rotating mechanism (32) and the transmission mechanism (31). Multiple rotating mechanisms (32) are rotatably mounted on multiple connectors (4) and connected to the linkage mechanism (33). The transmission mechanism (31) drives multiple rotating mechanisms (32) to rotate through the linkage mechanism (33). When the transmission mechanism (31) moves linearly to push the linkage mechanism (33), the linkage mechanism (33) compresses the reset spring (34) and drives the rotating mechanism (32) to rotate to one side. When the transmission mechanism (31) moves away from the linkage mechanism (33), the reset spring (34) drives the linkage mechanism (33) to drive the rotating mechanism (32) to rotate to the other side to reset.

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