Plug-in circuit breaker with plug-in assist mechanism

Abstract

The application discloses a plug-in circuit breaker's plug-in and pull-out assisting mechanism, which comprises a lifting handle connected with a plug-in position of the plug-in circuit breaker, a connecting mechanism and a supporting mechanism are arranged on the lifting handle, the connecting mechanism is connected with the plug-in circuit breaker, the supporting mechanism has an abutting part matched with the plug-in circuit breaker, when the lifting handle moves away from the plug-in circuit breaker, the connecting mechanism pulls out the plug-in circuit breaker from the plug-in position, when the lifting handle moves towards the plug-in circuit breaker, the abutting part presses the circuit breaker to insert the plug-in circuit breaker into the plug-in position, the lifting handle arranged above the plug-in circuit breaker drives the circuit breaker to move to insert and pull out, the lifting handle has the characteristics of saving labor, and the supporting mechanism on the lifting handle can block the rotation of the plug-in circuit breaker, so that the operation is very convenient.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and in particular to an auxiliary insertion and removal mechanism for a plug-in circuit breaker. Background Technology

[0002] Circuit breakers are crucial electrical components in the low-voltage electrical field, used to connect and disconnect current. They automatically cut off the circuit when overcurrent or short circuit occurs, protecting power lines and motors. Plug-in connection is one of the many connection methods for circuit breakers. The circuit breaker connects to external conductive parts via clamping contacts. While this connection method is convenient for wiring, the circuit breaker is relatively large, especially plug-in molded case circuit breakers. This requires considerable force, and aligning the circuit breaker with the external conductive parts during insertion into the cabinet is very difficult. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an easy-to-operate and easy-to-align insertion mechanism for plug-in circuit breakers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An auxiliary insertion and removal mechanism for a plug-in circuit breaker includes a lifting handle for connecting to the insertion position of the plug-in circuit breaker. The lifting handle is provided with a connecting mechanism and a supporting mechanism. The connecting mechanism is used to connect to the plug-in circuit breaker, and the supporting mechanism has a stop portion that cooperates with the plug-in circuit breaker.

[0006] When the lifting handle moves away from the plug-in circuit breaker, the connecting mechanism pulls the plug-in circuit breaker out of the insertion position. When the lifting handle moves towards the plug-in circuit breaker, the abutment part presses against the plug-in circuit breaker to insert the plug-in circuit breaker into the insertion position.

[0007] Preferably, the support mechanism is movable or rotatable on the lifting handle.

[0008] Preferably, a locking mechanism is provided between the lifting handle and the support structure, the locking mechanism locking the support structure in a retracted position separate from the plug-in circuit breaker.

[0009] Preferably, the locking mechanism is an elastic structure or a snap-fit ​​structure.

[0010] Preferably, the support mechanism is connected to an elastic element, which is disposed between the support mechanism and the lifting handle, driving the support mechanism to move or rotate, and locking the support structure in the working position of the abutment part for abutting the plug-in circuit breaker.

[0011] Preferably, the support mechanism includes a support shaft, and the locking mechanism includes a groove provided on the lifting handle. The support shaft and the groove are interference-fitted to lock the support structure in a retracted position separate from the plug-in circuit breaker.

[0012] Preferably, the lifting handle includes a pivot part, a lifting part, and a lifting part. One end of the lifting part is connected to the lifting part, and the other end is installed on the insertion position through the pivot part. Operating the lifting part can drive the lifting part to rotate around the pivot part. The lifting part is provided with the connecting mechanism and the supporting mechanism.

[0013] Preferably, the lifting part is provided with a connecting hole that cooperates with the connecting mechanism. The connecting mechanism is a connecting shaft that passes through the connecting hole. The size of the connecting hole is larger than the outer diameter of the connecting shaft, and the connecting mechanism can move along the length direction of the connecting hole.

[0014] Preferably, the support mechanism includes a support member and a rotating shaft. One end of the support member is rotatably mounted on the lifting handle via the rotating shaft, and the other end of the support member is a contact part that abuts against the plug-in circuit breaker.

[0015] Preferably, the support mechanism further includes a limiting shaft, with the rotating shaft and the limiting shaft mounted parallel to each other on the support member. The limiting shaft is in a limiting cooperation with the lifting handle to limit the angle at which the support member abuts against the plug-in circuit breaker.

[0016] Preferably, the support mechanism further includes a support shaft, and the rotating shaft, the limiting shaft and the support shaft are mounted parallel to each other on the support member. The limiting shaft is disposed between the rotating shaft and the support shaft, and the support shaft is provided with the abutment portion.

[0017] Preferably, the abutment part is provided with a roller, the line connecting the axis of the roller and the rotating shaft is OM, the vertical line between the axis of the roller and the operation panel of the plug-in circuit breaker is ON, and when the abutment part moves to the position of abutting the plug-in circuit breaker, the swing path of OM passes through ON.

[0018] Preferably, the lifting handle is provided with a limiting groove that cooperates with the limiting shaft, and the limiting groove is provided with a limiting surface. When the abutting part is in the working position of abutting against the plug-in circuit breaker, the limiting shaft and the limiting surface are in a limiting cooperation.

[0019] Preferably, the lifting handle is provided with a constriction groove, and the support shaft is interference-fitted with the constriction groove.

[0020] Preferably, the pivot part is provided with a positioning pin, the insertion position is provided with a positioning hole that cooperates with the positioning pin, and the lifting handle is connected to the insertion position through the positioning pin.

[0021] Preferably, the plug-in circuit breaker includes an operating mechanism, a contact system, a connector, and a drive mechanism disposed within the circuit breaker housing. The operating panel at one end of the circuit breaker housing has a handle hole for the circuit breaker handle to extend. Two handle connectors are provided on both sides of the operating panel. The circuit breaker handle is connected to the operating mechanism. The connector is located inside the other end of the circuit breaker housing. The contact system is connected to an external conductive element in the insertion position through the connector. The connector has a clamping end for clamping the external conductive element. The drive mechanism is connected to the connector for locking or unlocking the connector.

[0022] The insertion and removal mechanism of the plug-in circuit breaker created by this invention uses a lifting handle set above the plug-in circuit breaker to move the circuit breaker for insertion and removal. It not only saves effort, but the support mechanism on the lifting handle can also prevent the plug-in circuit breaker from rotating, making operation very convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the insertion and removal mechanism of the plug-in circuit breaker created by the present invention;

[0024] Figure 2 This is a side view of the support mechanism and locking mechanism of the present invention when locked together;

[0025] Figure 3 This is a side view of the support mechanism and locking mechanism of the present invention when they are unlocked;

[0026] Figure 4-6 This invention describes the process of inserting a plug-in circuit breaker into a cabinet.

[0027] Figure 7 This invention is a creation Figure 6 A magnified view of a portion of the image;

[0028] Figure 8-9 This invention describes the process of removing a plug-in circuit breaker from the cabinet.

[0029] Figure 10 This is a schematic diagram of the structure of the lifting handle created in this invention;

[0030] Figure 11 This is an exploded view of the lifting handle created in this invention;

[0031] Figure 12 This is a schematic diagram of the positioning pin created in this invention. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1 to 12 The given embodiments further illustrate specific implementations of the insertion / removal assistance mechanism for the plug-in circuit breaker created by the present invention. The insertion / removal assistance mechanism for the plug-in circuit breaker created by the present invention is not limited to the descriptions of the following embodiments.

[0033] like Figure 1-6 As shown, the insertion and removal mechanism of the plug-in circuit breaker created by the present invention includes a lifting handle 20, which is used to connect with the insertion position of the plug-in circuit breaker. The lifting handle is provided with a connecting mechanism 30 and a supporting mechanism 10. The connecting mechanism is connected to the plug-in circuit breaker, and the supporting mechanism 10 has a stop portion that cooperates with the plug-in circuit breaker.

[0034] When the lifting handle moves away from the plug-in circuit breaker, the connecting mechanism pulls the plug-in circuit breaker out of the insertion position. When the lifting handle moves towards the plug-in circuit breaker, the abutment part presses against the circuit breaker to insert the plug-in circuit breaker into the insertion position.

[0035] The insertion and removal mechanism of the plug-in circuit breaker invented in this invention uses a lifting handle located above the plug-in circuit breaker to move the circuit breaker for insertion and removal. This not only saves effort, but the support mechanism 10 on the lifting handle also prevents the plug-in circuit breaker from rotating, making operation very convenient. 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.

[0036] like Figure 9-10 As shown, the support mechanism 10 is movably or rotatably mounted on the lifting handle 20. The support mechanism 10 is connected to the elastic element 11, which is positioned between the support mechanism 10 and the lifting handle. The elastic element 11 drives the support mechanism 10 to move or rotate, locking it in the working position where the abutment part abuts against the plug-in circuit breaker. The elastic element 11 drives the support mechanism 10 to move or rotate towards the plug-in circuit breaker and maintains it in the preset working position after reaching it. Alternatively, the support mechanism 10 can be rigidly connected to the lifting handle 20, but this requires high precision in its position; otherwise, it cannot accurately abut against the plug-in circuit breaker.

[0037] In this embodiment, the support mechanism 10 is rotatably mounted on the lifting handle 20, and the elastic element 11 is a torsion spring. By rotatably mounting the support mechanism 10 on the lifting handle 20, it features a simple structure and easy assembly, and the space occupied by the rotational movement is also smaller. It can be understood that the elastic element 11 can also be a compression spring, tension spring, or leaf spring, etc., and the support mechanism 10 can also be linearly slidably mounted on the lifting handle 20.

[0038] like Figure 10-12As shown, the lifting handle 20 in this embodiment includes a pivot part 21, a lifting part 22, and a lifting part 23. The pivot part 21 is detachably connected to the cabinet 5, and the lifting part 23 is detachably connected to the plug-in circuit breaker. 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 cabinet 5, thus helping to remove the plug-in circuit breaker from the cabinet 5. By using the detachable lifting handle 20 to move the circuit breaker on the cabinet 5, not only can one lifting handle 20 operate multiple different circuit breakers, but the space occupied by the circuit breaker can also be reduced after the lifting handle 20 is removed. It is understood that the detachable method can also be omitted; the pivot part 21 can be directly connected to the cabinet 5, and the lifting part 23 can be directly connected to the plug-in circuit breaker, both of which fall within the protection scope of this invention.

[0039] Specifically, the lifting handle 20 includes a pivot part 21, a lifting part 22, and two lifting parts 23 arranged opposite to each other. One end of the two lifting parts 23 is connected to both ends of the lifting part 22, and the other end of the two lifting parts 23 is mounted on the cabinet 5 through the pivot part 21. Operating the lifting part 22 can drive the lifting part 23 to rotate around the pivot part 21. The connecting mechanism 30 is provided in the middle of the two lifting parts 23. The support mechanism 10 is provided on the two lifting parts 23 and is located between the connecting mechanism 30 and the pivot part 21.

[0040] like Figure 10-11 As shown, the connecting mechanism 30 is a circular shaft structure, with both ends connected to two lifting parts 23. The plug-in circuit breaker is equipped with a hook structure that connects to the connecting mechanism 30. Disassembly of both is convenient and requires no installation tools. At each end of the circular shaft structure are a mounting part 30a and an action part 30b. The mounting part 30a is used to mount on the two lifting parts 23, and the action part 30b is used to cooperate with the hook structure. Specifically, the plug-in circuit breaker is equipped with a handle connector 31 that is detachably connected to the connecting mechanism 30. The handle connector 31 has a hook structure; the connecting mechanism 30 can be connected by passing through the handle connector 31 of the hook structure, and can be disassembled by pulling out the connecting mechanism 30. This design features simple structure and convenient operation. It is understood that the handle connecting mechanism 31 can also adopt other shapes. For example, the handle connector 31 can adopt a through hole structure or a shaft structure. If a through hole structure is adopted, the connecting mechanism 30 of the lifting handle 20 can be connected through the through hole structure. If a shaft structure is adopted, for example, a shaft protrusion is provided on the handle connector 31, then the lifting handle 20 can adopt a hook structure or a through hole structure, all of which are within the protection scope of this invention.

[0041] like Figure 1As shown, one embodiment of the handle connection mechanism 31 includes a handle connector 31, which is a sheet-like structure. A receiving groove for the connection mechanism 30 is provided on the operation panel at one end of the circuit breaker housing 7. One end of the handle connector 31 is rotatably installed in the receiving groove, and the other end can be rotatably placed in or extended out of the receiving groove. When not in use, the handle connector 31 can be retracted into the circuit breaker housing 7, further reducing the circuit breaker's size. Preferably, the operation panel at one end of the plug-in circuit breaker also has a cover plate for covering the receiving groove of the connection mechanism 30. The cover plate is pivotally mounted. When the lifting handle 20 is not connected, the handle connector 31 is rotatably placed in the receiving groove, and the cover plate is closed. When the lifting handle 20 needs to be connected, the cover plate is opened, and the hook structure is rotated out to connect with the lifting handle 20.

[0042] Preferably, the plug-in circuit breaker in this embodiment is a plug-in molded case circuit breaker. The plug-in circuit breaker includes an operating mechanism, a contact system, a connector, and a drive mechanism disposed within the circuit breaker housing 7. A handle hole for the circuit breaker handle to extend is provided in the center of the operating panel at one end of the circuit breaker housing 7. Two handle connectors 31 are provided on both sides of the operating panel. The circuit breaker handle is connected to the operating mechanism. The connector is located inside the other end of the circuit breaker housing 7. The contact system is connected to an external conductive component 6 inside the cabinet 5 via the connector. The connector has a clamping end for clamping the external conductive component 6. The external conductive component 6 is inserted into the circuit breaker housing 7 and connected to the clamping end of the connector. The drive mechanism is connected to the connector for locking or unlocking the connector, i.e., loosening or tightening the clamping end of the external conductive component 6. Preferably, the handle connector 31 is hinged to the drive mechanism and connected to one end of the handle connector 31. The connector can be unlocked and the plug-in circuit breaker pulled out of the cabinet by raising the handle 20. Of course, as another embodiment, the handle connector 31 can also be hinged to the circuit breaker housing 7 and not connected to the drive mechanism.

[0043] like Figure 10-11 As shown, the lifting part 23 in this embodiment is provided with a connecting hole 231 that cooperates with the connecting mechanism 30. The connecting mechanism 30 is a connecting shaft passing through the connecting hole 231. The size of the connecting hole 231 is larger than the outer diameter of the connecting shaft, and the connecting mechanism 30 can move along the length of the connecting hole 231. By moving the connecting mechanism 30 in the connecting hole 231, the position of the connecting mechanism 30 can be adjusted, allowing the connecting mechanism 30 to adjust its position as the plug-in circuit breaker is inserted or removed. This makes it suitable for circuit breakers of different sizes, broadening its applicability and facilitating widespread use. Alternatively, the inner diameter of the connecting hole 231 can also match the connecting mechanism 30, allowing the connecting mechanism 30 to rotatably connect with the lifting part 23 through the connecting hole 231.

[0044] like Figure 10-11 As shown, the support mechanism 10 includes a support member 101 and a rotating shaft 102. One end of the support member 101 is rotatably mounted between the two lifting parts 23 of the lifting handle 20 via the rotating shaft 102. The other end of the support member 101 is an abutment part that abuts against the plug-in circuit breaker. An elastic member 11 is connected between the support member 101 and the lifting handle 20, driving the support mechanism 10 to move or rotate, thereby locking the support structure 10 at the position where the abutment part abuts against the plug-in circuit breaker.

[0045] Preferably, the support mechanism 10 of this embodiment includes a support member 101 and a rotating shaft 102, a limiting shaft 103, and a supporting shaft 104 respectively disposed on the support member 101. The rotating shaft 102, the limiting shaft 103, and the supporting shaft 104 are installed parallel to each other on the support member 101. The limiting shaft 103 is disposed between the rotating shaft 102 and the supporting shaft 104. The support member 101 is rotatably connected to the lifting handle 20 through the rotating shaft 102. The limiting shaft 103 is limited to the lifting handle 20. The limiting elastic member 11 pushes the support member 101 to rotate to the maximum angle. A roller 105 is provided on the supporting shaft 104 as abutting part that abuts against the plug-in circuit breaker. Specifically, the support member 101 is installed between the two lifting parts 23 via a rotating shaft 102. The elastic element 11 is a torsion spring, which is sleeved on the rotating shaft 102. One end of the torsion spring is connected to the lifting handle 20, and the other end is connected to the limiting shaft 103, driving the support member 101 to rotate in the direction of abutting against the plug-in circuit breaker. The two ends of the limiting shaft 103 are limited to the two lifting parts 23. The limiting elastic element 11 pushes the support member 101 to rotate to the maximum angle, which is the position when it abuts against the plug-in circuit breaker. The lifting handle 20 is provided with a limiting groove 106 that cooperates with the limiting shaft 103. The support shaft 104 is provided with a roller 105 as abutment. The roller 105 can roll on the top side of the plug-in circuit breaker to reduce the friction between it and the plug-in circuit breaker. The limiting groove 106 can slide with the limiting shaft 103 to guide the movement of the support member 101.

[0046] Preferred, such as Figure 6 As shown, when the plug-in circuit breaker is inserted into the cabinet 5, the line connecting the axis of the roller 105 and the rotating shaft 102 is OM, and the line perpendicular to the circuit breaker operation panel is ON. When the abutment part moves to the position of abutting the circuit breaker, the swing path of OM passes through ON, so as to ensure that the support 101 of the lifting handle 20 is always abutted on the lifting part 23 during the insertion and removal of the plug-in circuit breaker.

[0047] Furthermore, the groove wall at one end of the limiting groove 106 forms a limiting surface 107. The elastic element 11 pushes the limiting shaft 103 to rotate and engage with the limiting surface 107. When the abutting part is in the working position of abutting against the plug-in circuit breaker, the limiting shaft 103 and the limiting surface 107 engage with each other. The lifting handle 20 is provided with a locking mechanism 12. The locking mechanism 12 is an elastic structure or a snap-fit ​​structure. The support shaft 104 can rotate into the limiting groove 106 and lock with the locking mechanism 12. The groove walls at both ends of the limiting groove 106 respectively form a limiting surface 107 and a clearance surface 108. When the limiting shaft 103 is blocked by the limiting surface 107, the angle at which the support member 101 abuts against the plug-in circuit breaker is limited. The clearance surface 108 is used to avoid the limiting shaft 103, so that the support member 101 can contact the locking mechanism 12 provided on the lifting handle 20. The locking mechanism 12 can lock the support mechanism 10 in a position that avoids the plug-in circuit breaker, preventing the support mechanism 10 from contacting the plug-in circuit breaker. For example, during the process of pulling out the plug-in circuit breaker, it is not necessary for the support mechanism 10 to block the plug-in circuit breaker, and the support mechanism 10 is locked in the lifting handle 20.

[0048] In this embodiment, the locking mechanism 12 is a snap-fit ​​structure fixedly mounted on the lifting handle 20. The locking mechanism 12 includes a groove on the lifting handle 20, and the support shaft 104 is interference-fitted with the groove opening to lock the support structure 10 in the retracted position where the abutment part is separated from the circuit breaker. It is understood that the locking mechanism 12 can also adopt other structures, such as a protruding structure or a groove structure. Furthermore, the locking mechanism 12 can also cooperate with the limiting shaft 103 on the support member 101, or directly with the support member 101. In this embodiment, the locking mechanism 12 cooperates with the support shaft 104 without additional processing, featuring a simple structure and low cost. Figure 10-11 As shown, the pivot 21 is provided with a positioning pin 213, and the cabinet 5 is provided with a positioning hole 51 that cooperates with the positioning pin 213. The lifting handle 20 is connected to the cabinet 5 through the positioning pin 213. When the lifting part 22 is operated to move the lifting part 23 away from the cabinet 5, the pivot 21 applies a force toward the cabinet 5. The disassembly structure of both is convenient and does not require any installation tools. It is understood that the same cooperation can also be achieved by providing a handle positioning hole on the pivot 21 and a positioning pin 213 on the cabinet 5, both of which fall within the protection scope of this invention. The pivoting part 21 described in this embodiment includes two side plates 211 and a bottom plate 212 arranged opposite to each other. A pivoting shaft 24 is provided at one end of each of the two side plates 211, and the bottom plate 212 is connected 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. The bottom plate 212 is used to connect with the cabinet 5, and a positioning pin 213 is provided on the bottom plate 212 that can be detachably connected to the cabinet 5.

[0049] like Figure 10-11 As shown, each lifting part 23 includes a first side plate, a second side plate, and a third side plate that are bent and connected in sequence. The first side plate and the second side plate form an obtuse angle, and the second side plate and the third side plate form an obtuse angle. The first side plate is connected to the lifting part 22, and the third side plate is rotatably connected to the side plate 211 of the pivot part 21 via the pivot shaft 24. The bent lifting part 23 is convenient for user operation. Specifically, in this embodiment, one end of each of the two lifting parts 23 is connected to the lifting part 22 through the upper mounting hole 233, and the other end of each of the two lifting parts 23 is connected to the pivot shaft 24 through the lower mounting hole 234. The pivot shaft 24 is rotatably connected to the two side plates 211 of the pivot part 21. The connecting mechanism 30 is disposed between the two lifting parts 23, and both ends of the connecting mechanism 30 are respectively engaged with the connecting holes 231 of the two lifting parts 23. The support mechanism 10 is disposed between the two lifting parts 23, located between the connecting mechanism 30 and the pivot part 21. Two handle connectors 31 are provided on both sides of the operation panel at one end of the circuit breaker. The two handle connectors 31 are respectively located on the outside of the two lifting parts 23. Both ends of the connecting mechanism 30 pass through the lifting parts 23 from the inside and connect to the handle connectors 31. By placing the connecting mechanism 30 on the inside of the two lifting parts 23, not only can the lifting handle 20 have sufficient strength, but the internal space of the lifting handle 20 is also effectively utilized to accommodate the connecting mechanism 30. The structure is compact and reliable, and has the characteristic of small size. It is understood that the connecting mechanism 30 can also be located at other positions of the lifting handle 20, and the handle connector 31 is also located inside the two lifting parts 23 and cooperates with the connecting mechanism 30.

[0050] like Figure 1 , 12As shown, the cabinet 5 is provided with a positioning hole 51 that mates with the positioning pin 213. Preferably, the positioning hole 51 includes an insertion part 52 for avoiding the positioning pin 213, and a limiting part 53 communicating with one side of the insertion part 52. The inner diameter of the limiting part 53 is smaller than the inner diameter of the insertion part 52. Preferably, the two ends of the positioning pin 213 are respectively provided with a mounting head 214 and a guide head 216. The mounting head 214 is connected to the pin hole 217 of the base plate 212. The guide head 216 is circular to facilitate passing through the insertion part 52. A limiting step 215 is provided between the mounting head 214 and the guide head 216. The positioning pin 213 can first pass through the insertion part 52 and then slide into the limiting part 53, so that the limiting step 215 and the limiting part 53 are limited. Through the limiting cooperation between the positioning pin 213 and the positioning hole 51, the reliability of the assembly of the lifting handle 20 and the cabinet is further ensured. This embodiment includes 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 to the lifting handle 20; no specific limitation is made here. Only the insertion frame of the cabinet 5 is shown in the figure; obviously, the cabinet 5 can also have other structures.

[0051] like Figure 8-9 The process of removing a plug-in circuit breaker from cabinet 5 is shown. The connecting mechanism 30 of the lifting handle 20 is connected to the handle connector 31 of the plug-in circuit breaker. The plug-in circuit breaker is positioned by cabinet 5 and will not tilt or shift. At this time, the support mechanism 10 is not required. The support mechanism 10 is locked inside the lifting handle 20 by the locking mechanism 12. The lifting handle 20 rotates clockwise around the pivot 21 mounted on cabinet 5. The lifting part 23 drives the connecting mechanism 30 to lift, thereby removing the plug-in circuit breaker.

[0052] like Figure 4-6 The process of inserting a plug-in circuit breaker into cabinet 5 is shown. The connecting mechanism 30 of the lifting handle 20 is connected to the handle connector 31 of the plug-in circuit breaker, and the support mechanism 10 is unlocked from the locking mechanism 12. The support mechanism 10 is driven by the elastic member 11 to press against the top side of the plug-in circuit breaker. The support mechanism 10 is located on one side of the connecting mechanism 30, so that the plug-in circuit breaker will not rotate or deviate around the connecting mechanism 30. Then the plug-in circuit breaker is inserted into cabinet 5. Before the plug-in circuit breaker comes into contact with the external conductive member 6, the support mechanism 10 prevents the plug-in circuit breaker from rotating, so that the bottom of the plug-in circuit breaker can be aligned with the external conductive member 6.

[0053] 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. A plug-in / plug-out mechanism for a plug-in circuit breaker, comprising a lifting handle (20) for connecting to the plug-in position of the plug-in circuit breaker, the lifting handle being provided with a connecting mechanism (30) for connecting to the plug-in circuit breaker, wherein when the lifting handle moves away from the plug-in circuit breaker, the connecting mechanism pulls the plug-in circuit breaker out of the plug-in position, characterized in that: The lifting handle (20) is also provided with a support mechanism (10), which has a stop part that cooperates with the plug-in circuit breaker; when the lifting handle moves toward the plug-in circuit breaker, the stop part presses against the plug-in circuit breaker to insert the plug-in circuit breaker into the insertion position.

2. The insertion / removal mechanism of the plug-in circuit breaker according to claim 1, characterized in that: The support mechanism (10) is movable or rotatable on the lifting handle (20).

3. The insertion / removal mechanism of the plug-in circuit breaker according to claim 1 or 2, characterized in that: A locking mechanism (12) is provided between the lifting handle (20) and the support mechanism (10), which locks the support mechanism (10) in a retracted position separate from the plug-in circuit breaker.

4. The insertion / removal mechanism of the plug-in circuit breaker according to claim 3, characterized in that: The locking mechanism (12) is an elastic structure or a snap-fit ​​structure.

5. The insertion / removal mechanism of the plug-in circuit breaker according to claim 2, characterized in that: The support mechanism (10) is connected to the elastic element (11), which is located between the support mechanism (10) and the lifting handle. The elastic element (11) drives the support mechanism (10) to move or rotate, and locks the support mechanism (10) in the working position of the abutment part for contacting the plug-in circuit breaker.

6. The insertion / removal mechanism of the plug-in circuit breaker according to claim 3, characterized in that: The support mechanism (10) includes a support shaft (104), and the locking mechanism (12) includes a groove provided on the lifting handle (20). The support shaft (104) is interference-fitted with the groove opening to lock the support mechanism (10) in a retracted position separate from the plug-in circuit breaker.

7. The insertion / removal mechanism of the plug-in circuit breaker according to claim 1, characterized in that: The lifting handle (20) includes a pivot part (21), a lifting part (22) and a lifting part (23). One end of the lifting part (23) is connected to the lifting part (22), and the other end is installed on the insertion position through the pivot part (21). Operating the lifting part (22) can drive the lifting part (23) to rotate around the pivot part (21). The lifting part (23) is provided with the connecting mechanism (30) and the supporting mechanism (10).

8. The insertion / removal mechanism of the plug-in circuit breaker according to claim 7, characterized in that: The lifting part (23) is provided with a connecting hole (231) that cooperates with the connecting mechanism (30). The connecting mechanism (30) is a connecting shaft that passes through the connecting hole (231). The size of the connecting hole (231) is larger than the outer diameter of the connecting shaft. The connecting mechanism (30) can move in the connecting hole (231) along the length direction of the connecting hole (231).

9. The insertion / removal mechanism of the plug-in circuit breaker according to claim 1 or 2, characterized in that: The support mechanism (10) includes a support member (101) and a rotating shaft (102). One end of the support member (101) is rotatably mounted on the lifting handle (20) via the rotating shaft (102), and the other end of the support member (101) is a contact part that abuts against the plug-in circuit breaker.

10. The insertion / removal mechanism of the plug-in circuit breaker according to claim 9, characterized in that: The support mechanism (10) also includes a limiting shaft (103). The rotating shaft (102) and the limiting shaft (103) are installed parallel to each other on the support member (101). The limiting shaft (103) is in a limiting cooperation with the lifting handle (20) to limit the angle of contact between the support member (101) and the plug-in circuit breaker.

11. The insertion / removal mechanism of the plug-in circuit breaker according to claim 10, characterized in that: The support mechanism (10) further includes a support shaft (104). The rotating shaft (102), the limiting shaft (103) and the support shaft (104) are installed parallel to each other on the support member (101). The limiting shaft (103) is located between the rotating shaft (102) and the support shaft (104). The support shaft (104) is provided with the abutment part.

12. The insertion / removal mechanism of the plug-in circuit breaker according to claim 11, characterized in that: The abutment part is provided with a roller (105). The line connecting the axis of the roller (105) and the rotating shaft (102) is OM. The axis of the roller (105) is perpendicular to the operation panel of the plug-in circuit breaker. When the abutment part moves to the position of abutting the plug-in circuit breaker, the swing path of the OM passes through the ON.

13. The insertion / removal mechanism of the plug-in circuit breaker according to claim 11, characterized in that: The lifting handle (20) is provided with a limiting groove (106) that cooperates with the limiting shaft (103). The limiting groove (106) is provided with a limiting surface (107). When the abutting part is in the working position of abutting against the plug-in circuit breaker, the limiting shaft (103) and the limiting surface (107) are in a limiting cooperation.

14. The insertion / removal mechanism of the plug-in circuit breaker according to claim 11, characterized in that: The lifting handle (20) is provided with a constriction groove, and the support shaft (104) is interference-fitted with the constriction groove.

15. The insertion / removal mechanism of the plug-in circuit breaker according to claim 7, characterized in that: The pivot part (21) is provided with a positioning pin (213), and the insertion position is provided with a positioning hole (51) that cooperates with the positioning pin (213). The lifting handle (20) is connected to the insertion position through the positioning pin (213).

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