Electric leakage start-stop protection module and circuit breaker

Abstract

The electric leakage start-stop protection module comprises a module shell and a driving shaft assembled on the module shell in a sliding mode, the module shell is provided with an operation hole, the driving shaft is operated through the operation hole, a static conductive part and a movable conductive part are arranged in the module shell, and when the driving shaft is pressed to move in the axial direction, the static conductive part and the movable conductive part are pressed to move in the axial direction. The movable conductive part connected to the driving shaft moves from a first position to a second position, the movable conductive part is in contact with the static conductive part at the first position and is separated from the static conductive part at the second position, the driving shaft is rotated to drive the movable conductive part to rotate between the second position and a third position, and the driving shaft is unlocked from the module shell at the second position; and the movable conductive piece is locked with the module shell at the third position and is opposite to the static conductive piece in a staggered manner. According to the utility model, the movable conductive member is switched between the second position and the third position by rotating the driving shaft, so that the distance between the movable conductive member and the static conductive member is increased on the premise of not increasing the overall axial length of the module, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, and particularly relates to a leakage start-stop protection module and a circuit breaker. Background Art

[0002] The leakage start-stop protection module is commonly used in leakage circuit breakers. The leakage start-stop protection module can perform insulation performance testing without disassembling the product and will not burn out. However, the existing leakage start-stop protection modules are usually of a push-button structure. Limited by problems such as the small size of the module, creepage distance, and small electrical clearance, breakdown discharge is likely to occur, rendering the leakage start-stop protection module ineffective. Summary of the Invention

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and provide a leakage start-stop protection module and a circuit breaker.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a leakage start-stop protection module, which includes a module housing and a driving shaft slidably assembled in the module housing. The module housing is provided with an operation hole, and the driving shaft is operated through the operation hole. A static conductive member and a moving conductive member are arranged in the module housing. When the driving shaft is pressed to move axially, the moving conductive member connected to the driving shaft moves from a first position to a second position. The moving conductive member contacts the static conductive member at the first position and separates from the static conductive member at the second position. The driving shaft is rotated to drive the moving conductive member to rotate between the second position and a third position. The driving shaft is unlocked from the module housing at the second position and locked with the module housing at the third position, and the moving conductive member and the static conductive member are misaligned relative to each other.

[0006] Preferably, the static conductive member includes at least a pair of contact pieces, and each pair of the contact pieces is respectively arranged on opposite sides of the driving shaft. The moving conductive member includes at least one conductive elastic sheet, and the middle of the conductive elastic sheet is connected to the driving shaft. At the first position, both ends of the conductive elastic sheet respectively contact a pair of contact pieces. At the second position, both ends of the conductive elastic sheet are respectively spaced opposite to a pair of contact pieces. At the third position, both ends of the conductive elastic sheet are respectively misaligned relative to a pair of contact pieces.

[0007] Preferably, it further includes a locking structure located in the module housing. One end of the driving shaft extends out of the module housing from the operation hole for operating the driving shaft, and the other end of the driving shaft moves in the module housing. The locking structure is unlocked at the second position and locked at the third position.

[0008] Preferably, the locking structure is located between the driving shaft and the interior of the module housing, and / or the locking structure is located between the conductive elastic sheet and the module housing.

[0009] Preferably, a protruding fitting portion is provided inside the module housing. When in the second position, the conductive elastic piece is located on the side of the fitting portion facing away from the operation hole. Rotate the driving shaft to stop or separate the conductive elastic piece from the side of the fitting portion facing away from the operation hole for locking or unlocking the driving shaft.

[0010] Preferably, the fitting portion is circumferentially arranged inside the module housing. When in the first position, the conductive elastic piece is located on the side of the fitting portion facing the operation hole.

[0011] Preferably, a protruding fitting portion is provided inside the module housing, and a protruding locking portion is provided on the driving shaft. Rotate the driving shaft to stop or separate the locking portion from the side of the fitting portion facing away from the operation hole for locking or unlocking the driving shaft.

[0012] Preferably, a boss is provided in the middle of the driving shaft, and an installation groove is provided in the middle of the boss. The boss is separated into a locking portion and an installation portion by the installation groove. The moving conductive member is assembled in the installation groove, and the middle of the moving conductive member is connected to the installation portion. The two ends of the moving conductive member respectively extend out from the opposite sides of the installation groove.

[0013] Preferably, the locking portion includes a locking boss, and the axial length of the locking boss is equal to the moving stroke of the driving shaft. After the driving shaft rotates to the third position, it is locked by the locking boss and the fitting portion.

[0014] Preferably, the fitting portion is provided with a guide groove, and the driving shaft is pressed, and the driving shaft is slidably fitted with the guide groove.

[0015] Preferably, the driving shaft is provided with at least one positioning portion, and the module housing is provided with at least one limiting portion. The positioning portion and the limiting portion cooperate to limit the axial moving stroke of pressing the driving shaft.

[0016] Preferably, an elastic member is provided between the driving shaft and the module housing. The elastic member undergoes elastic deformation after the driving shaft is pressed, and the elastic member provides a restoring force for the driving shaft to move to the first position.

[0017] Preferably, one end of the driving shaft serves as an operation portion, and the operation portion slides out from the operation hole. The operation portion is used for pressing and rotating the driving shaft.

[0018] Preferably, at least a part of the operation portion protrudes radially along the driving shaft to form a limiting platform. An elastic member is sleeved on the driving shaft between the limiting platform and the operation hole. The two ends of the elastic member are respectively connected to the limiting platform and the module housing.

[0019] Preferably, the rotation angle range of the driving shaft is 30° to 150°.

[0020] Preferably, the rotation angle of the drive shaft is 90°.

[0021] Preferably, the conductive elastic sheet includes a connecting plate, the connecting plate is integrally arranged along the axial direction perpendicular to the drive shaft, at least a part of the middle of the connecting plate is connected to the mounting portion provided on the drive shaft, and both ends of the connecting plate extend to the opposite sides of the mounting portion respectively to form elastic arms, and each elastic arm is provided with a moving contact portion for cooperating with the static conductive member.

[0022] Preferably, the connecting plate is fixedly attached to one side surface of the mounting portion, both ends of the connecting plate exceed the mounting portion and bend and extend to form elastic arms, a moving contact portion is formed by the end of each elastic arm, and the two moving contact portions are located in the same plane parallel to the connecting plate.

[0023] Preferably, the connecting plate is a strip-shaped straight plate, the connecting plate is arranged along the radial direction of the mounting portion, both ends of the connecting plate are bent along the axial direction of the drive shaft to the same side of the mounting portion to form elastic arms, and the ends of the elastic arms extend radially outward along the drive shaft to form two moving contact portions. On the side facing the static conductive member, the moving contact portion and the mounting portion are coplanar.

[0024] Preferably, the middle of the connecting plate is bent to form a connecting portion, the connecting portion is arranged in the mounting groove of the mounting portion, so that both ends of the connecting portion extend obliquely outside the mounting groove to form elastic arms, and the end of each elastic arm is bent to form a contact portion, and the contact surfaces of the two contact portions are located in the same plane.

[0025] Preferably, at least a pair of assembly portions are arranged in the module housing, each pair of locking and assembly portions are symmetrically distributed on the opposite sides of the drive shaft, each assembly portion is used for arranging a contact piece of the static conductive member, and each assembly portion is provided with a wiring groove, and the wiring groove corresponds to the wiring portion of the contact piece.

[0026] Preferably, the module housing includes at least two mutually assembled housings, and at the splicing place of the two housings, there are mutually engaged buckles and grooves, and / or at the splicing place of the two housings, there are mutually inserted grooves and positioning ribs.

[0027] The present utility model also provides a circuit breaker, including a housing, a leakage protection module is arranged in the housing, and the leakage start-stop protection module as described above is also fixedly arranged in the housing.

[0028] For the leakage start-stop protection module and the circuit breaker of the present utility model, on the basis of pressing the drive shaft to move from the first position to the second position, by rotating the drive shaft, the moving conductive member is switched between the second position and the third position. Without increasing the overall axial length of the module, the internal space is fully utilized, the distance between the moving conductive member and the static conductive member is further increased, the risk of being broken down is avoided, and the use safety is improved.

[0029] In addition, at the third position, the drive shaft is fitted with the module housing, or the moving conductive member is fitted with the module housing, which can lock the drive shaft, having the advantages of simple structure, small occupied space and convenient operation.

[0030] In particular, when the moving conductive member moves between the first position and the second position, it respectively corresponds to the side of the second fitting portion facing the operation hole and the side of the second fitting portion facing away from the operation hole. The second fitting portion can increase the creepage distance, so that the second fitting portion can play a role in isolating the moving contact portion from the static conductive member.

[0031] In addition, a guiding groove is provided on the fitting portion, and the cooperation between the guiding groove and the locking portion can limit the movement track of the drive shaft, which is beneficial to ensuring the cooperation stability between the locking portion and the fitting portion.

[0032] In addition, the operation portion is integrally formed by the drive shaft, with simple structure and convenient transmission, which is beneficial to reducing costs.

[0033] In addition, by configuring an elastic member, pressing the elastic member stores energy in the elastic member to provide a reset force for the drive shaft. At the same time, the elastic member can also provide a contact pressure when the moving conductive member contacts the static conductive member to ensure contact stability.

[0034] In addition, when the leakage start-stop module is integrally arranged in the circuit breaker, the module housing can be omitted and formed by the outer shell of the circuit breaker, which is beneficial to further reducing costs. Description of the Drawings

[0035] Figure 1 is a schematic diagram of the cooperation between the leakage start-stop protection module and the base in an embodiment of the present invention Figure 1 ;

[0036] Figure 2 is a schematic diagram of the cooperation between the leakage start-stop protection module and the base in an embodiment of the present invention Figure 2 ;

[0037] Figure 3 is a schematic structural diagram of the leakage start-stop protection module in an embodiment of the present invention Figure 1 ;

[0038] Figure 4 is a schematic structural diagram of the leakage start-stop protection module in an embodiment of the present invention Figure 2 ;

[0039] Figure 5 is a schematic structural diagram of the leakage start-stop protection module in an embodiment of the present invention Figure 3 ;

[0040] Figure 6 is an exploded schematic diagram of the module housing in an embodiment of the present invention;

[0041] Figure 7 It is a schematic structure diagram of the leakage start-stop protection module in the third position in the first embodiment of the present utility model Figure 1 ;

[0042] Figure 8 It is a schematic structure diagram of the leakage start-stop protection module in the third position in the first embodiment of the present utility model Figure 2 ;

[0043] Figure 9 It is a schematic structure diagram of the leakage start-stop protection module in the third position in the first embodiment of the present utility model Figure 3 ;

[0044] Figure 10 It is a schematic structure diagram of the leakage start-stop protection module in the first position in the second embodiment of the present utility model;

[0045] Figure 11 It is a schematic diagram of the cooperation between the second housing and the static conductive member in the second embodiment of the present utility model;

[0046] Figure 12 It is a schematic diagram of the cooperation between the first housing and the static conductive member in the second embodiment of the present utility model;

[0047] Figure 13 It is a schematic diagram of the cooperation among the drive shaft, the reset member and the moving conductive member in the second embodiment of the present utility model Figure 1 ;

[0048] Figure 14 It is a schematic diagram of the cooperation among the drive shaft, the reset member and the moving conductive member in the second embodiment of the present utility model Figure 2 ;

[0049] Figure 15 It is a schematic structure diagram of the moving conductive member in the second embodiment of the present utility model;

[0050] Figure 16 It is a schematic structure diagram of the contact piece in the second embodiment of the present utility model;

[0051] Reference numerals:

[0052] A - Leakage start - stop protection module, 1 - Module housing, 101 - Operation hole, 102 - Fitting part, 1021 - First fitting part, 1022 - Second fitting part, 103 - Accommodation cavity, 104 - Wiring groove, 105 - Fixing part, 106 - Limiting part, 107 - Guide groove, 108 - Positioning rib, 109 - Positioning hook, 11 - First housing, 111 - Buckle, 12 - Second housing, 121 - Card slot, 2 - Driving shaft, 21 - Operation part, 22 - Limiting platform, 23 - Mounting part, 231 - Mounting groove, 24 - Positioning part, 25 - Locking boss, 26 - Locking part, 3 - Moving conductive part, 31 - Connecting part, 32 - Elastic arm, 33 - Moving contact part, 4 - Static conductive part, 40 - Contact piece, 41 - Wiring part, 42 - Static contact part, 5 - Elastic part, B - Base. Detailed implementation manners

[0053] The following embodiments given in conjunction with the drawings further illustrate the detailed implementation manners of the leakage start - stop protection module and the circuit breaker of the present utility model. The leakage start - stop protection module and the circuit breaker of the present utility model are not limited to the descriptions of the following embodiments.

[0054] The circuit breaker includes a housing, and at least one contact unit is arranged inside the housing. The main circuit of each contact unit is connected to an external circuit, and the on - off of the external circuit is controlled by controlling the contact unit; a leakage protection module is also arranged inside the housing. The leakage protection module is connected to the main circuit of the contact unit and is used to detect the leakage state of the circuit breaker. The leakage protection module is also configured with a leakage start - stop protection module A. The leakage start - stop protection module A is arranged inside the housing of the circuit breaker. The leakage start - stop protection module A is connected between the leakage protection module and the main circuit and is used to connect or disconnect the connection between the leakage protection module and the main circuit.

[0055] Generally, the leakage start - stop protection module A includes a module housing 1. The module housing 1 is provided with an operation hole 101. A driving shaft 2, a static conductive part 4 and a moving conductive part 3 are arranged inside the module housing 1. The driving shaft 2 passes through the operation hole 101. The driving shaft 2 is in sliding fit with the module housing 1. The driving shaft 2 can move linearly along the axial direction of the driving shaft 2. By pressing the driving shaft 2, the moving conductive part 3 connected to the driving shaft 2 moves from the first position to the second position. When the moving conductive part 3 is in the first position (see Figure 8 ), the moving conductive part 3 contacts the static conductive part 4, and the leakage protection module is turned on. When in the second position, the moving conductive part 3 is separated from the static conductive part 4, and the leakage protection module is turned off.

[0056] The improvement point of this application is that the driving shaft 2 is rotated to drive the moving conductive part 3 to rotate between the second position and the third position. The driving shaft 2 is unlocked from the module housing 1 in the second position and locked with the module housing 1 in the third position, and the moving conductive part 3 is misaligned relative to the static conductive part 4 (see Figure 7 ),8 ), so that on the basis of pressing the drive shaft 2 to move from the first position to the second position, the movable conductive member 3 is switched between the second position and the third position by rotating the drive shaft 2. Without increasing the overall axial length of the module, the internal space is fully utilized, the distance between the movable conductive member 3 and the static conductive member 4 is further increased, the risk of breakdown is avoided, and the use safety is improved.

[0057] Specifically, as Figure 7 - 11 shown, the static conductive member 4 includes at least a pair of contact pieces 40, and each pair of contact pieces 40 corresponds to a contact unit of the circuit breaker. When the static conductive member 4 includes two or more pairs of contact pieces 40, the adjacent two pairs of contact pieces 40 are arranged at intervals along the axial direction of the drive shaft 2, and each pair of contact pieces 40 is respectively arranged on the opposite sides of the drive shaft 2. The movable conductive member 3 includes at least two conductive elastic pieces, and the middle of each conductive elastic piece is connected to the drive shaft 2. In the first position, both ends of each conductive elastic piece are respectively in contact with a pair of contact pieces 40, so as to turn on the leakage start-stop protection module A. In the second position, both ends of each conductive elastic piece are respectively spaced opposite to a pair of contact pieces 40, so as to turn off the leakage start-stop protection module A. In the third position, both ends of each conductive elastic piece are respectively misaligned with a pair of contact pieces 40, thereby further increasing the distance between each conductive elastic piece and the contact piece 40. Preferably, the rotation angle range of the drive shaft 2 is 30° to 150°.

[0058] The leakage start-stop protection module further includes a locking structure. The locking structure is located inside the module housing 1, between the inside of the module housing 1 and the drive shaft, or the locking structure can also be arranged between the conductive elastic piece and the module housing 1. One end of the drive shaft 2 extends out of the module housing 1 from the operation hole 101 for operating the drive shaft 2. An operation part 21 can be arranged at one end of the drive shaft 2 located outside the module housing 1, and the other end of the drive shaft 2 moves inside the module housing 1. In the second position, the locking structure is in an unlocked state, and the drive shaft 2 can move axially. In the third position, the locking structure is in a locked state, thereby restricting the drive shaft 2 from moving axially. That is, when the drive shaft 2 rotates from the second position to the third position, the locking structure enters the locked state, thereby locking the drive shaft 2. When the drive shaft 2 rotates from the third position to the second position, the locking structure is unlocked, so that the drive shaft 2 can move to the first position.

[0059] The locking structure generally includes a pair of bosses that stop each other, or a groove and a protrusion that cooperate with each other. For example, as Figure 7 - 9, as shown in FIGS. 11 and 12, a protruding mating portion 102 is provided inside the module housing 1. Rotate the drive shaft 2 to stop or separate the conductive elastic piece from the side of the mating portion 102 facing away from the operation hole 101 for locking or unlocking the drive shaft 2. Alternatively, a locking portion 26 is provided on the drive shaft 2. Rotate the drive shaft 2 to stop or separate the locking portion 26 from the side of the mating portion 102 facing away from the operation hole 101 for locking or unlocking the drive shaft 2. It should be noted that the locking in the third position means that the drive shaft 2 cannot move axially. Additionally, as Figure 1 - 8 , as shown in FIGS. 10, one end of the drive shaft 2 serves as an operation portion 21. The operation portion 21 extends out from the operation hole 101 of the module housing 1 for pressing and rotating the drive shaft 2. The operation portion 21 is integrally formed with the drive shaft 2, having the advantages of simple structure and convenient transmission, and at the same time can save production and assembly costs.

[0060] Additionally, the locking structure may further include at least one anti - detachment portion. The anti - detachment portion is located on the part of the drive shaft 2 inside the module housing 1. The anti - detachment portion protrudes axially from the drive shaft 2. The sum of the protruding height of the anti - detachment portion and the diameter of the drive shaft 2 is greater than the inner diameter of the operation hole 101, so that the anti - detachment portion is clamped with the edge of the operation hole 101 from the inside of the module housing 2, thereby restricting the drive shaft 2 from falling off from the operation hole 101; of course, anti - detachment can also be achieved by changing the outer diameter of the drive shaft 2. For example, if the drive shaft 2 is a shaft body with a gradually changing diameter and the outer diameter of some of its shaft bodies is greater than the inner diameter of the operation hole 101, anti - detachment can also be achieved.

[0061] Furthermore, as Figure 1 - 8 , as shown in FIGS. 10, 13 and 14, an elastic member 5 is further provided between the drive shaft 2 and the module housing 1. The two ends of the elastic member 5 are respectively connected to the drive shaft 2 and the module housing 1. The elastic member 5 undergoes elastic deformation after the drive shaft 2 is pressed, and provides a restoring force for the drive shaft 2 to move to the first position. At the same time, when the moving conductive member 3 contacts the static conductive member 4, it can restrict the drive shaft 2 from popping out. At this time, the elastic member 5 can provide a contact pressure for the moving conductive member 3 and the static conductive member 4 to ensure contact stability. Additionally, the drive shaft 2 is provided with at least one positioning portion 24, and the module housing 1 is provided with at least one limiting portion 106. The positioning portion 24 and the limiting portion 106 cooperate to limit the axial movement stroke of the drive shaft 2.

[0062] Combined with Figure 1 - 9 Provide the first embodiment of the leakage start - stop protection module A.

[0063] As Figure 7 - 9As shown, the leakage start-stop protection module A includes a module housing 1. An accommodation cavity 103 is formed inside the module housing 1. An operation hole 101 communicating with the inside is provided at one end of the module housing 1. At the other end of the module housing 1 away from the operation hole 101, a fixing part 105 is provided for fixing the module housing 1 inside the circuit breaker. Figure 9 In this case, the fixing part 105 is two legs provided outside the module housing 1. Each leg is fixedly connected to the outer shell of the circuit breaker through screws inside.

[0064] A drive shaft 2, a static conductive part 4 and a moving conductive part 3 are arranged inside the module housing 1. The drive shaft 2 is slidably matched with the module housing 1. An operation part 21 is provided at one end of the drive shaft 2, and the operation part 21 slidably extends from the operation hole 101 to the outside of the module housing 1. The static conductive part 4 includes at least a pair of contact pieces 40. In this embodiment, two pairs of contact pieces 40 are taken as an example, but the number of contact pieces 40 is not limited to two pairs, and can also be one pair, or more than three pairs. The two pairs of contact pieces 40 are arranged at intervals opposite to each other along the axial direction of the drive shaft 2 on the module housing 1, and each pair of contact pieces 40 is symmetrically distributed on the opposite sides of the drive shaft 2. A static contact part 42 is provided at one end of each contact piece 40, and a wiring part 41 is provided at the other end. The wiring part 41 corresponds to a wiring groove 104 provided on the module housing 1 for wiring. The moving conductive part 3 includes two conductive elastic pieces. The two conductive elastic pieces are arranged at intervals in the middle of the drive shaft 2. Each conductive elastic piece cooperates with a pair of contact pieces 40. That is, moving contact parts 33 are provided at both ends of each conductive elastic piece.

[0065] When the moving conductive part 3 is in the first position, the moving contact parts 33 of the conductive elastic pieces are respectively in contact with the static contact parts 42 of the contact pieces 40. Press the operation part 21 to move the drive shaft 2 axially, so that the moving conductive part 3 moves from the first position to the second position. At this time, the moving conductive part 3 is in the second position, and the moving contact parts 33 of the conductive elastic pieces and the static contact parts 42 of the contact pieces 40 are spaced opposite to each other in the axial direction parallel to the drive shaft 2. Rotate the operation part 21 to make the drive shaft 2 rotate around the axis, so that the moving conductive part 3 can rotate between the second position and the third position. As Figure 7 、 8 shown, when the moving conductive part 3 is in the third position, the drive shaft 2 is locked with the module housing 1 and the moving conductive part 3 is misaligned relative to the static conductive part 4. When the moving conductive part 3 rotates to the second position, the drive shaft 2 is unlocked from the module housing 1. At this time, the moving conductive part 3 and the static conductive part 4 are again spaced opposite to each other in the axial direction parallel to the drive shaft 2.

[0066] In this embodiment, rotate the drive shaft 2 to move between the second position and the third position. The rotation angle range of the drive shaft 2 is between 30° and 150°. Preferably, the rotation angle of the drive shaft 2 is 90°. At this time, the distance between the moving conductive part 3 and the static conductive part 4 is the largest.

[0067] In this embodiment, an elastic member 5 is provided between the drive shaft 2 and the module housing 1. Pressing the operation portion 21 causes the elastic member 5 to undergo elastic deformation, and the elastic member 5 provides a restoring force for the drive shaft 2 to move to the first position. Preferably, the elastic member 5 is located outside the module housing 1 to prevent the elastic member 5 from occupying too much internal space of the module housing 1 and affecting the movement of other internal structures. Figure 1 - 8 In the, the elastic member 5 is a spring. The elastic member 5 is sleeved on the outside of the drive shaft 2. At least part of the operation portion 21 protrudes radially along the drive shaft 2 to form a limiting platform 22. The elastic member 5 is sleeved on the outside of the drive shaft 2 between the limiting platform 22 and the operation hole 101. One end of the elastic member 5 is connected to the limiting platform 22, and the other end is connected to the module housing 1. That is, the other end can be connected to the outside of the module housing 1 provided with the operation hole 101, or connected to the hole wall of the operation hole 101, or passed through the operation hole 101 and connected to the inside of the module housing 1.

[0068] In this embodiment, the locking structure is cooperatively arranged between the module housing 1, the drive shaft 2, and the movable conductive member 3. That is, when the drive shaft 2 rotates from the second position to the third position, the drive shaft 2 is locked in cooperation with the module housing 1. At the same time, the movable conductive member 3 can also be locked in cooperation with the module housing 1, thereby locking the drive shaft 2 in the third position and keeping the movable conductive member 3 and the static conductive member 4 in a state of a relatively large distance. The drive shaft 2 cannot move axially; when the drive shaft 2 rotates from the third position to the second position, the locking portion 26 is unlocked from the module housing 1, and at the same time, the movable conductive member 3 is also unlocked from the module housing 1, so that the drive shaft 2 can move axially to the first position.

[0069] It should be noted that in this embodiment, the locking structure can also be only arranged between the drive shaft 2 and the module housing 1, or when the hardness of the movable conductive member 3 is relatively large, it can also be only locked in cooperation by the movable conductive member 3 and the module housing 1.

[0070] The module housing 1 is internally provided with a protruding fitting portion 102, and the drive shaft 2 is provided with a locking portion 26. The locking portion 26 protrudes radially outward along the drive shaft 26. Preferably, the locking portion 26 and the movable conductive member 3 are spaced opposite to each other along an axis parallel to the drive shaft 2. Of course, it is also possible that the locking portion 26 and the movable conductive member 3 are slightly axially misaligned.

[0071] Such as Figure 7 - 9As shown, the engaging portion 102 includes a first engaging portion 1021 and a second engaging portion 1022. The first engaging portion 1021 is located near the operation hole 101, and the second engaging portion 1022 is located in the middle of the module housing 1. That is, the second engaging portion 1022 is axially below the first engaging portion 1021. The second engaging portion 1022 is provided with a guiding groove 107 that slidably engages with the driving shaft 2. When the driving shaft 2 moves axially, the driving shaft 2 slidably engages with the guiding groove 107. In the first position, the locking portion 26 on the driving shaft 2 is not engaged with the first engaging portion 1021, and the conductive elastic piece is located on the side of the second engaging portion 102 facing the operation hole 101. In the second position, the locking portion 26 is still not engaged with the first engaging portion 1021, and the conductive elastic piece is located on the side of the second engaging portion 1022 facing away from the operation hole 101. Rotate the driving shaft 2 to the third position so that the locking portion 26 abuts against the first engaging portion 1021 and the conductive elastic piece abuts against the second engaging portion 1022, thereby locking the driving shaft 2 to the third position. After the driving shaft 2 rotates from the third position to the second position, the locking portion 26 is separated from the first engaging portion 1021, and the conductive elastic piece is separated from the second engaging portion 1022. The driving shaft 2 is unlocked, so that the driving shaft 2 in the second position can be driven to the first position.

[0072] Combine Figure 1 - 7 Provide a module housing 1 structure applied to this embodiment, as Figure 3 - 7 As shown, the module housing 1 includes at least two mutually assembled housings. At the splicing place of the two housings, there are mutually engaged buckles 111 and clamping grooves 121, and / or at the splicing place of the two housings, there are mutually inserted grooves and positioning ribs 109, thereby splicing to form a complete module housing 1.

[0073] Specifically, one of the housings is provided with a clamping groove 121 and / or a buckle 111 at its edge, and the other housing is correspondingly provided with a buckle 111 and / or a clamping groove 121 at its edge. Each clamping groove 121 is engaged with a buckle 111, thereby splicing the two housings together. In addition, mutually inserted grooves and positioning ribs 108 can also be provided at the edges of the two mutually assembled housings. Preferably, the groove is an open groove, which can not only play a guiding role but also further make the assembly of the two housings more firm.

[0074] In this embodiment, the module housing 1 is assembled by two housings. For the convenience of description, the module housing 1 is assembled by a first housing 11 and a second housing 12. An accommodation cavity 103 is formed between the first housing 11 and the second housing 12. One end of the module housing 1 is provided with an operation hole 101 communicating with the inside. The operation hole 101 is formed by docking the semi-circular grooves at one end of the first housing 11 and the second housing 12. Two legs are provided at one end of the first housing 11 away from the operation hole 101, and a screw is arranged in each leg for connecting with the circuit breaker.

[0075] As Figure 5 , 6 shown, a buckle 111 is provided on the outer side of the side wall near the edge of the first housing 11, and a clamping groove 121 is provided at the edge of the second housing 12. The number of buckles 111 and clamping grooves 121 can be set to multiple according to actual needs, and the buckles 111 and clamping grooves 121 are preferably arranged in pairs, and each pair of buckles 111 (clamping grooves 121) are symmetrically arranged on the opposite sides of the first housing 11 (second housing 12); two grooves are formed in the edge of the first housing 11, and the openings of the grooves face the second housing 12. A positioning rib 108 extending outward is provided at the edge of the second housing 12. When the first housing 11 and the second housing 12 are assembled, the positioning rib 108 and the groove are inserted into each other. In this embodiment, the protruding length of the positioning rib 108 is less than the depth of the groove, so that when the first housing 11 and the second housing 12 are assembled, a certain gap is still left at the bottom of the groove, and this gap can correspond to the wiring groove 104 and the wiring part 41.

[0076] In addition, a positioning hook 109 is further provided outside the module housing 1. When the leakage start-stop protection device is arranged in the circuit breaker, the positioning hook 109 can be connected to the groove arranged inside the circuit breaker, so as to position the whole in the circuit breaker.

[0077] Two pairs of assembly parts are arranged inside the module housing 1. One pair of assembly parts is located on both sides of the operation hole 101, and the other pair of assembly parts is located in the middle of the side wall of the module housing 1. Each pair of assembly parts is symmetrically distributed on the opposite sides of the drive shaft 2, and the connection line between the two assembly parts on the same side of the drive shaft 2 is parallel to the axial direction of the drive shaft 2. Each assembly part is provided with a wiring groove 104 communicating with the outside of the module housing 1, and each assembly part is provided with a contact piece 40.

[0078] Inside the module housing 1, a first mating portion 1021 and a second mating portion 1022 are protrudingly provided. The number of the first mating portions 1021 matches the number of the locking portions 26, and the number of the second mating portions 1022 only needs to be able to cooperate with the conductive elastic sheet. In this embodiment, taking a pair of first mating portions 1021 and two pairs of second mating portions 1022 as an example, but not limited to a pair of first mating portions 1021 and two pairs of second mating portions 1022, that is, the first mating portions 1021 and the second mating portions 1022 can respectively be one pair, two pairs or more than three pairs. When there is a pair of first mating portions 1021 in the module housing 1, the two first mating portions 1021 are provided on the module housing 1 near the operation hole 101 and are symmetrically distributed on opposite sides of the drive shaft 2. When there are two pairs of second mating portions 1022 in the module housing 1, the two pairs of second mating portions 1022 are spaced opposite to each other in the axial direction of the drive shaft 2. Each pair of second mating portions 1022 is symmetrically distributed on opposite sides of the drive shaft 2. Each second mating portion 1022 is located on the inner side wall of the module housing 1 between a pair of assembly portions, and a guiding groove 107 is provided on the side of each second mating portion 1022 facing the drive shaft 2. After the first housing 11 and the second housing 12 are spliced, the first mating portion 1021 and the second mating portion 1022 on the same first housing 11 (or second housing 12) are arranged along the same axis. When the volume of the second mating portion 1022 is relatively large, enough moving clearance needs to be left at the docking position of each pair of second mating portions 1022, that is, the width of the moving clearance is greater than or equal to the width of the moving conductive member 3. The two ends of the moving clearance respectively correspond to a pair of assembly portions. Thus, when the moving conductive member 3 moves between the first position and the second position, it can pass through the second mating portion 1022 through the moving clearance. During this process, the drive shaft 2 is in sliding fit with the guiding groove 107; the drive shaft 2 rotates 90°, so that the locking portion 26 and the moving conductive member 3 are rotated from the second position to the third position. At this time, the locking portion 26 abuts against the side of the first mating portion 1021 facing away from the operation hole 101, and the moving conductive member 3 abuts against the side of the second mating portion 1022 facing away from the operation hole 101, thereby locking the drive shaft 2 so that it cannot move axially. The drive shaft 2 rotates back 90°, so that the locking portion 26 and the moving conductive member 3 are rotated from the third position to the second position. At this time, the locking portion 26 is separated from the side of the first mating portion 1021 facing away from the operation hole 101, and the moving conductive member 3 is separated from the side of the second mating portion 1022 facing away from the operation hole 101 and enters the moving clearance, and is driven by the elastic member 5 to move axially to the first position.

[0079] Certainly, on the basis of leaving the moving clearance, the second mating portion 1022 can also have a certain axial length. Thus, in the first position, the moving conductive member 3 is located at the middle position of the second mating portion 1022.

[0080] Further, on the inner side wall of the module housing 1 away from the operation hole 101 is a limiting portion 106, and at one end of the driving shaft 2 away from the operation portion 21 is a positioning portion 24. When the positioning portion 24 abuts against the limiting portion 106, the axial movement stroke of the driving shaft 2 when being pressed can be restricted. Additionally, other positioning structures can be provided between the operation hole 101 and the driving shaft 2 to restrict the axial movement stroke of the driving shaft 2.

[0081] It should be noted that in this embodiment, there are no specific restrictions on the assembling direction and shape of the first housing 11 and the second housing 12 forming the module housing 1. It can be assembled left and right, up and down, etc., as long as a housing structure with an accommodating cavity 103 is achieved.

[0082] Combined Figure 7 、 8 A driving shaft 2 structure applied to this embodiment is provided.

[0083] As Figure 7 、 8 shown, the driving shaft 2 is an overall circular shaft body. One end of the driving shaft 2 is the operation portion 21. In the figure, the operation portion 21 protrudes radially from one end of the driving shaft 2, so that the outer diameter of the operation portion 21 is greater than the inner diameter of the operation hole 101. One side of the operation portion 21 facing the operation hole 101 can be a limiting platform 22. An elastic member 5 is sleeved on the outer side of the driving shaft 2 between the limiting platform 22 and the operation hole 101. The elastic member 5 is a spring. By pressing the operation portion 21, the elastic member 5 is compressed under the cooperation of the limiting platform 22 and the module housing 1, so as to provide a driving force for the driving shaft 2 to move to the first position; at one end of the driving shaft 2 away from the operation portion 21 is a protrusion serving as the positioning portion 24. When the positioning portion 24 abuts against the limiting portion 106 in the module housing 1 to restrict the movement stroke of pressing the driving shaft 2, it can indicate that the driving shaft 2 has been pressed to the second position; there are two mounting portions 23 on the driving shaft 2. Each mounting portion 23 is in an overall disc shape. The outer diameter of each mounting portion 23 is less than or equal to the inner diameter of the guiding groove 107 and greater than the inner diameter of the operation hole 101. The two mounting portions 23 are arranged at intervals along the axial direction of the driving shaft 2. One mounting portion 23 is located in the middle of the driving shaft 2, and the other mounting portion 23 is arranged at a position on the driving shaft 2 closer to the positioning portion 24. When the driving shaft 2 moves axially, the circumferential side surface of the mounting portion 23 slides in cooperation with the guiding groove 107 along the axial direction. When the driving shaft 2 rotates, the circumferential side surface of the mounting portion 23 rolls in cooperation with the guiding groove 107. At the third position, each mounting portion 23 cooperates with a second cooperation portion 1022. The second cooperation portion 1022 can increase the creepage distance and can also isolate the moving contact portion 33 from the static contact portion 42; there is also a locking portion 26 provided on the driving shaft 2. Preferably, the locking portions 26 are symmetrically distributed on the opposite sides of the driving shaft 2. Each locking portion 26 and a moving contact portion 33 of a moving conductive member 3 are arranged at intervals along the same axis of the driving shaft 2.Figure 7 In it, the locking portion 26 is a strip-shaped protrusion. The locking portion 26 is located between the operating portion 21 and an adjacent mounting portion 23, and the locking portion 26 is located inside the module housing 1.

[0084] In addition, the locking portion 26 of this embodiment can also have the function of preventing detachment. That is, the sum of the protruding height of the locking portion 26 and the diameter of the drive shaft 2 is greater than the inner diameter of the operation hole 101. Thus, the locking portion 26 can be clamped with the edge of the operation hole 101 from the inside of the module housing 1, thereby preventing the drive shaft 2 from detaching from the module housing 1. Of course, it is also possible to additionally configure a detachment prevention portion.

[0085] In this embodiment, the conductive elastic sheet includes a connecting plate. The connecting plate is integrally arranged along the axial direction perpendicular to the drive shaft 2. At least a part of the middle region of the connecting plate is connected to the mounting portion 23 provided on the drive shaft 2. The two ends of the connecting plate respectively extend beyond the opposite sides of the mounting portion 23 to form elastic arms 32. Each elastic arm 32 is provided with a moving contact portion 33 that cooperates with the static conductive member 4.

[0086] As Figure 8 、 9 shown, the conductive elastic sheet includes a strip-shaped connecting plate. The connecting plate is fixedly attached to one side surface of the mounting portion 23. Figure 8 In it, the connecting plate is fixed to the side surface of the mounting portion 23 facing away from the operation hole 101. The two ends of the connecting plate respectively exceed the mounting portion 23 and bend and extend to form elastic arms 32. The lengths of the elastic arms 32 can be adjusted according to specific circumstances. A moving contact portion 33 is formed at the end of each elastic arm 32, and the two moving contact portions 33 are located in the same plane parallel to the connecting plate, which is convenient for cooperating with the two contact pieces 40 in the static conductive member 4. Figure 8 、 9 In it, the two moving contact portions 33 are coplanar with the side of the mounting portion 23 facing the operation hole 101. Figure 8 、 9 In it, the connecting plate is arranged along the radial direction of the mounting portion 23. The two ends of the connecting plate are respectively bent along the axial direction of the drive shaft 2 to the same side of the mounting portion 23 to form elastic arms 32. At this time, the connecting plate as a whole is a strip-shaped straight plate. The ends of the elastic arms 32 respectively extend radially outward along the drive shaft 2 to form two moving contact portions 33. On the side facing the static conductive member 4, the moving contact portions 33 are coplanar with the mounting portion 23, so that the conductive elastic sheet as a whole approximately presents an inverted "L" shape.

[0087] In this embodiment, as Figure 7As shown, the contact piece 40 in the static conductive member 4 is an L-shaped plate structure. One end of the contact piece 40 serves as the static contact portion 42 to cooperate with the moving contact portion 33, and the other end of the contact piece 40 serves as the wiring portion 41 for wiring with the wiring groove 104 opened on the module housing 1. Correspondingly, an assembly portion for assembling the contact piece 40 is provided in the module housing 1. The assembly portions are provided in pairs and symmetrically distributed on opposite sides of the drive shaft 2. One pair of assembly portions is adjacent to the operation hole 101, and the operation hole 101 is located between this pair of assembly portions. The other pair of assembly portions is located in the middle of the side wall of the module housing 1. Each assembly portion is provided with a wiring groove 104 corresponding to the wiring portion 41. The static contact portion 42 is attached to one side of the assembly portion for cooperating with the moving contact portion 33.

[0088] Combined with Figure 1 - 6 Figures 10 - 16 provide the second embodiment of the leakage start-stop protection module A.

[0089] As Figure 1 - 6 As shown in Figures 10 - 12, the leakage start-stop protection module A is similar to the first embodiment. The leakage start-stop protection module A includes a module housing 1. Among them, one end of the module housing 1 is provided with an operation hole 101, and the other end is provided with a fixing portion 105. An accommodation cavity 103 is formed inside the module housing 1. A drive shaft 2, a static conductive member 4, and a moving conductive member 3 are arranged inside the module housing 1. The drive shaft 2 is slidably fitted with the module housing 1. One end of the drive shaft 2 is provided with an operation portion 21, and the operation portion 21 slides and extends from the operation hole 101 to the outside of the module housing 1. The static conductive member 4 includes two pairs of contact pieces 40. The two pairs of contact pieces 40 are arranged on the module housing 1 at intervals along the axial direction of the drive shaft 2, and each pair of contact pieces 40 is symmetrically distributed on opposite sides of the drive shaft 2. One end of each contact piece 40 is provided with a static contact portion 42, and the other end is provided with a contact portion. The wiring portion 41 corresponds to the wiring groove 104 opened on the module housing 1 for wiring. The moving conductive member 3 includes at least two conductive elastic pieces. In this embodiment, taking the moving conductive member 3 including two conductive elastic pieces as an example, but not limited to only including two conductive elastic pieces, and its specific number matches the contact pieces 40 in the static conductive member 2. In the figure, the two conductive elastic pieces are arranged at intervals in the middle of the drive shaft 2. Each conductive elastic piece cooperates with a pair of contact pieces 40. That is, moving contact portions 33 are provided at both ends of each conductive elastic piece.

[0090] Same as the first embodiment, as Figure 10As shown, when the moving conductive member 3 is in the first position, the moving contact portions 33 of the conductive elastic sheet are respectively in contact with the static contact portions 42 of the contact sheet 40. Press the operating portion 21 to move the drive shaft 2 axially, so that the moving conductive member 3 moves from the first position to the second position. At this time, the moving conductive member 3 is in the second position, and the moving contact portions 33 of the conductive elastic sheet and the static contact portions 42 of the contact sheet 40 are spaced apart relatively in the axial direction parallel to the drive shaft 2. Rotate the operating portion 21 to make the drive shaft 2 rotate about its axis, so that the moving conductive member 3 can rotate between the second position and the third position. When the moving conductive member 3 is in the third position, the drive shaft 2 is locked with the module housing 1 and the moving conductive member 3 and the static conductive member 4 are misaligned relative to each other. When the moving conductive member 3 rotates to the second position, the drive shaft 2 is unlocked from the module housing 1. At this time, the moving conductive member 3 and the static conductive member 4 are again spaced apart relatively in the axial direction parallel to the drive shaft 2.

[0091] In this embodiment, an elastic member 5 is provided between the drive shaft 2 and the module housing 1, and the elastic member 5 drives the drive shaft 2 to move from the second position to the first position. Its assembly position and structure refer to the first embodiment.

[0092] Different from the first embodiment, in this embodiment, in the third position, only the drive shaft 2 is locked with the module housing 1, that is, a locking portion 26 is provided in the middle of the drive shaft 2. When the drive shaft 2 is rotated from the second position to the third position, the locking portion 26 cooperates with the module housing 1 to lock, so as to lock the drive shaft 2 in the third position, so that the moving conductive member 3 and the static conductive member 4 are kept in a state with a larger distance. At this time, the drive shaft 2 cannot move axially; rotate the drive shaft 2 from the third position to the second position, the drive shaft 2 is unlocked from the module housing 1, so that the drive shaft 2 can move axially to the first position.

[0093] Specifically, as Figure 10 - 12 shown, a protruding fitting portion 102 is provided inside the module housing 1. Preferably, the fitting portion 102 is provided with a guide groove 107 that slidably cooperates with the drive shaft 2. When the drive shaft 2 moves axially, the drive shaft 2 slidably cooperates with the guide groove 107; in this embodiment, the axial length of the fitting portion 102 is relatively large. To reduce the weight of the module housing 1, the fitting portion 102 can adopt a hollow structure. In the first position, the position where the locking portion 26 is located corresponds to the middle of the fitting portion 102. In the second position, the locking portion 26 is located on the side of the fitting portion 102 facing away from the operation hole 101. Rotate the drive shaft 2 to stop the locking portion 26 against the fitting portion 102 facing away from the operation hole 101, so as to lock the drive shaft 2 to the third position, or separate the locking portion 26 from the fitting portion 102 facing away from the operation hole 101 to unlock the drive shaft 2, so that the drive shaft 2 rotated to the second position can be reset to the first position.

[0094] In this embodiment, the rotation range of the drive shaft 2 is the same as that of the first embodiment, which is also 90°. At this time, the locking portion 26 corresponds to between the two ends of each conductive elastic sheet.

[0095] In addition, the module housing 1 of this embodiment can also be assembled. The formation of its accommodation cavity 103, operation hole 101, fixing portion 105, assembly portion, and wiring groove 104 can refer to the first embodiment. The difference from the first embodiment is that two pairs of mating portions 102 are protrudingly provided inside the module housing 1. Similar to the first embodiment, the two pairs of mating portions 102 are for example, and the mating portions 102 can also be one pair or three or more pairs. When there are two or more pairs of mating portions 102, adjacent two pairs of mating portions 102 are spaced opposite to each other in the axial direction of the drive shaft 2, and each pair of mating portions 102 is symmetrically distributed on the opposite sides of the drive shaft 2. Each mating portion 102 is circumferentially arranged on the inner side wall of the module housing 1 between a pair of assembly portions, and a guiding groove 107 is provided on the side of each mating portion 102 facing the drive shaft 2. After the first housing 11 and the second housing 12 are spliced, in this embodiment, the circumferential length of the mating portion 102 is relatively large, and there is enough moving clearance at the docking portion of each pair of mating portions 102, that is, the width of the moving clearance is greater than or equal to the width of the moving conductive member 3, and the two ends of the moving clearance respectively correspond to a pair of assembly portions. Thus, when the moving conductive member 3 moves between the first position and the second position, it can pass through the mating portion 102 through the moving clearance, and the drive shaft 2 is in sliding fit with the guiding groove 107. The drive shaft 2 rotates 90°, so that the moving conductive member 3 rotates from the second position to the third position. At this time, the locking portion 26 abuts against the side of the mating portion 102 facing away from the operation hole 101, thereby locking the drive shaft 2 and preventing the drive shaft 2 from axially moving to the first position. At the same time, the mating portion 102 with a relatively large circumferential length can play a role in isolating the moving contact portion 33 from the static conductive member 4. The drive shaft 2 rotates 90° in the reverse direction, so that the moving conductive member 3 rotates from the third position to the second position. At this time, the locking portion 26 is separated from the side of the mating portion 102 facing away from the operation hole 101, so that the moving conductive member 3 enters the moving clearance and moves to the first position under the drive of the elastic member 5.

[0096] Further, the inner side wall of the module housing 1 away from the operation hole 101 serves as a limiting portion 106. Figure 10 - 12 In this case, the limiting portion 106 is a convex structure, and a positioning portion 24 is provided at one end of the drive shaft 2 away from the operation portion 21. When the positioning portion 24 abuts against the limiting portion 106, the axial movement stroke of the drive shaft 2 when it is pressed can be limited, and other positioning structures can also be additionally provided between the operation hole 101 and the drive shaft 2.

[0097] Similar to the first embodiment, the splicing direction and shape of the first housing 11 and the second housing 12 forming the module housing 1 are not specifically limited, and it can be spliced left and right, up and down, etc., as long as a housing structure with an accommodation cavity 103 is realized.

[0098] Combination Figure 10 , 13 14 provides a structure of a drive shaft 2 applied to this embodiment.

[0099] like Figure 10 , 13 As shown in Figure 14, the drive shaft 2 is a circular shaft as a whole, and one end of the drive shaft 2 serves as an operating portion 21. In the figure, the operating portion 21 protrudes radially from one end of the drive shaft 2, so that the outer diameter of the operating portion 21 is larger than the inner diameter of the operating hole 101, and the end of the operating portion 21 close to the operating hole 101 further protrudes radially to form an annular protrusion serving as a limit platform 22. An elastic member 5 is sleeved on the outer side of the drive shaft 2 between the limit platform 22 and the operating hole 101; the portion of the drive shaft 2 extending into the module housing 1 is provided with two boss structures spaced apart in the axial direction, each boss structure being provided at a distance from the limit platform 22. A groove serving as a mounting groove 231 is provided in the middle of each boss. The mounting groove 231 is an open groove with three sides open. The boss is divided into two parts by the mounting groove 231, wherein the part away from the operating part 21 is the mounting part 23. When a moving conductive part 3 is provided in the mounting groove 231, the middle part of the moving conductive part 3 is connected to the mounting part 23, and the two ends of the moving conductive part 3 extend from the opposite sides of the mounting groove 231 respectively. The part close to the operating part 21 serves as a locking part 26, and the locking part 26 cooperates with the matching part 102 to lock or unlock the driving shaft 2.

[0100] Preferably, Figure 10 , 13 As shown in FIG. 14 , the locking portion 26 includes a locking boss 25, which is a bar-shaped protrusion as a whole. The axial length of the locking boss 25 is equal to the moving stroke of the drive shaft 2. When the drive shaft 2 rotates to the third position, the locking boss 25 and the side of the matching portion 102 facing away from the operating hole 101 are stopped, thereby limiting the axial movement of the drive shaft 2. In this embodiment, two locking bosses 25 are provided on each locking portion 26, and the locking bosses 25 are respectively located on opposite sides of the locking portion 26. The locking bosses 25 have a certain length in the axial direction. Therefore, the locking bosses 25 can also have a guiding function. When the drive shaft 2 is moving in a straight line, the locking bosses 25 can also be considered to have a guiding function, and are slidably matched with the guide groove 107 on the matching portion 102 to achieve the guiding function of axial movement.

[0101] Of course, the driving shaft 2 may be provided with a guide portion to slide in the guide groove 107 , or the side wall of the driving shaft 2 may slide in the guide groove 107 directly.

[0102] In addition, a positioning portion 24 is provided at one end of the drive shaft 2 away from the operating portion 21, or the side of the mounting portion 23 away from the operating portion 21 facing away from the operating hole 101 serves as the positioning portion 24, which is used to cooperate with the limiting portion 106 in the module housing 1, thereby limiting the pressing stroke of the drive shaft 2.

[0103] In this embodiment, as Figure 13 - 15 shown, the conductive elastic sheet of the moving conductive member 3 includes a connecting plate. The connecting plate is disposed as a whole along the axial direction perpendicular to the driving shaft 2. At least a partial area in the middle of the connecting plate is connected to the mounting portion 23 provided on the driving shaft 2. The two ends of the connecting plate respectively extend beyond the opposite sides of the mounting portion 23 to form elastic arms 32. Each elastic arm 32 is provided with a moving contact portion 33 for cooperating with the static conductive member 4.

[0104] As Figure 13 , 15 shown, the middle of the connecting plate is bent to form a connecting portion 31, so that the connecting plate as a whole is approximately in a V-shaped structure. The connecting portion 31 is disposed in the mounting groove 231 of the mounting portion 23, so that the two ends of the connecting portion 31 obliquely extend beyond the mounting groove 231 to form elastic arms 32. The length of the elastic arms 32 can be adjusted according to actual needs. The end of each elastic arm 32 is bent to form a moving contact portion 33, and the contact surfaces of the two moving contact portions 33 are located on the same plane, which is convenient for cooperating with the two contact pieces 40 in the static conductive member 4. The conductive elastic sheet of the moving conductive member 3 adopts a connecting plate with a V-shaped structure. In the axial direction of the driving shaft 2, the moving contact portion 33 is closer to the static conductive member 4, which is beneficial to reducing the moving stroke of the driving shaft 2 and the moving conductive member 3.

[0105] As Figure 16 shown, the contact piece 40 of the static conductive member 4 is in a plate-like structure. One end surface of the contact piece 40 serves as the static contact portion 42, and the other end surface of the contact piece 40 serves as the wiring portion 41 and is provided with a wiring hole. The middle of the contact piece 40 is bent once to make the contact piece 40 as a whole form an L-shaped structure. The wiring portion 41 is obliquely deflected in the direction close to the static contact portion 42, and the end of the static contact portion 42 is bent and extended in the direction opposite to the wiring portion 41.

[0106] Furthermore, the assembly portion provided on the module housing 1 is provided with a groove for mounting the contact piece 40. The bent area between the static contact portion 42 and the wiring portion 41 is connected to the side wall of the groove. Preferably, each assembly portion is further provided with a wiring groove 104 communicated with the outside of the module housing 1. The wiring groove 104 corresponds to the wiring portion 41 of each contact piece 40, which is convenient for wiring.

[0107] A circuit breaker includes a housing. At least one contact unit is disposed in the housing. The contact unit can adopt the prior art, that is, the contact unit at least includes a pair of wiring terminals and a contact mechanism connected between the pair of wiring terminals. The contact mechanism is driven by an operating mechanism disposed in the housing to open and close, so as to disconnect or connect the main circuit of each contact unit; a leakage protection module is connected to the main circuit of each contact unit. The leakage protection module also adopts the prior art. The leakage protection module is connected to the leakage start-stop protection module A of the above embodiment.

[0108] Preferably, the outer shell includes a base B and a cover body covering the base B, and a space for assembling the contact unit, the operating mechanism, the leakage protection module and the leakage start-stop protection module A is formed between the cover body and the base B. The leakage start-stop protection module A is fixedly assembled through the module housing 1. Figure 1 , 2 In [reference numbers], the leakage start-stop protection module A is fixed on the base B. Further, the module housing 1 of the leakage start-stop protection module A can also be omitted, and the outer shell of the circuit breaker forms the module housing 1. Thus, the operation hole 101, the mating part 102 and other structures of the module housing 1 in the above embodiments are correspondingly arranged on the outer shell.

[0109] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in the habitual placement during use. It is only for convenience of description and does not indicate that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0110] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. Leakage start-stop protection module, including a module housing (1) and a drive shaft (2) slidably assembled in the module housing (1). The module housing (1) is provided with an operation hole (101), and the drive shaft (2) is operated through the operation hole (101). A static conductive member (4) and a moving conductive member (3) are arranged in the module housing (1). When the drive shaft (2) is pressed to move axially, the moving conductive member (3) connected to the drive shaft (2) moves from a first position to a second position. The moving conductive member (3) contacts the static conductive member (4) at the first position and separates from the static conductive member (4) at the second position. It is characterized in that: The driving shaft (2) is rotated to drive the dynamic conductive component (3) to rotate between a second position and a third position; the driving shaft (2) is unlocked from the module housing (1) at the second position and locked with the module housing (1) at the third position, and the dynamic conductive component (3) and the static conductive component (4) are offset and opposed to each other.

2. The leakage start-stop protection module according to claim 1, characterized in that: The static conductive component (4) comprises at least one pair of contact pieces (40), each pair of the contact pieces (40) being respectively arranged on opposite sides of the drive shaft (2); the dynamic conductive component (3) comprises at least one conductive spring piece, the middle portion of which is connected to the drive shaft (2); in a first position, the two ends of the conductive spring piece are respectively in contact with a pair of contact pieces (40); in a second position, the two ends of the conductive spring piece are respectively spaced and opposed to a pair of contact pieces (40); and in a third position, the two ends of the conductive spring piece are respectively staggered and opposed to a pair of contact pieces (40).

3. The leakage start-stop protection module according to claim 2, characterized in that: It also includes a locking structure located in the module housing (1), one end of the drive shaft (2) extends out of the module housing (1) from the operating hole (101) for operating the drive shaft (2), and the other end of the drive shaft (2) moves in the module housing (1). When in the second position, the locking structure is unlocked, and when in the third position, the locking structure is locked.

4. The leakage start-stop protection module according to claim 3, characterized in that: The locking structure is located between the drive shaft (2) and the interior of the module housing (1), and / or the locking structure is located between the conductive spring sheet and the module housing (1).

5. The leakage start-stop protection module according to claim 4, wherein: A protruding mating portion (102) is provided inside the module housing (1); when in the second position, the conductive spring sheet is located on the side of the mating portion (102) facing away from the operating hole (101); the drive shaft (2) is rotated so that the conductive spring sheet and the side of the mating portion (102) facing away from the operating hole (101) are stopped or separated for locking or unlocking the drive shaft (2).

6. The leakage start-stop protection module according to claim 5, characterized in that: The matching portion (102) is arranged inside the module housing (1) along a circumferential direction, and in a first position, the conductive spring is located on a side of the matching portion (102) facing the operating hole (101).

7. The leakage start-stop protection module according to claim 3, wherein: The module housing (1) is provided with a protruding mating portion (102) inside, and the drive shaft (2) is provided with a protruding locking portion (26). The drive shaft (2) is rotated so that the locking portion (26) and the mating portion (102) are stopped or separated from one side facing away from the operating hole (101) to lock or unlock the drive shaft (2).

8. The leakage start-stop protection module according to claim 7, characterized in that: A boss is provided in the middle of the drive shaft (2), a mounting groove (231) is provided in the middle of the boss, the boss is divided into a locking portion (26) and a mounting portion (23) by the mounting groove (231), the moving conductive component (3) is assembled in the mounting groove (231) and the middle of the moving conductive component (3) is connected to the mounting portion (23), and two ends of the moving conductive component (3) extend from opposite sides of the mounting groove (231) respectively.

9. The leakage start-stop protection module according to claim 8, characterized in that: The locking portion (26) comprises a locking boss (25), the axial length of the locking boss (25) being equal to the moving stroke of the drive shaft (2), and when the drive shaft (2) rotates to the third position, the locking boss (25) and the matching portion (102) are stopped and locked.

10. The leakage start-stop protection module according to any one of claims 5-9, characterized in that: The mating portion (102) is provided with a guiding groove (107), and by pressing the driving shaft (2), the guiding groove (107) is in sliding fit with the driving shaft (2).

11. The leakage start-stop protection module according to claim 1, characterized in that: The driving shaft (2) is provided with at least one positioning portion (24), and the module housing (1) is provided with at least one limiting portion (106). The positioning portion (24) and the limiting portion (106) cooperate to limit the axial movement stroke of the pressing driving shaft (2).

12. The leakage start-stop protection module according to claim 1, wherein: An elastic member (5) is provided between the driving shaft (2) and the module housing (1). The elastic member (5) undergoes elastic deformation after the driving shaft (2) is pressed, and the elastic member (5) provides a restoring force for the driving shaft (2) to move to the first position.

13. The leakage start-stop protection module according to claim 1, characterized in that: One end of the driving shaft (2) serves as an operating portion (21). The operating portion (21) slides out from the operating hole (101), and the operating portion (21) is used for pressing and rotating the driving shaft (2).

14. The leakage start-stop protection module according to claim 13, characterized in that: At least a part of the operating portion (21) protrudes radially along the driving shaft (2) to form a limiting platform (22). An elastic member (5) is sleeved on the driving shaft (2) between the limiting platform (22) and the operating hole (101). The two ends of the elastic member (5) are respectively connected to the limiting platform (22) and the module housing (1).

15. The leakage start-stop protection module according to claim 1, characterized in that: The rotation angle range of the driving shaft (2) is 30° to 150°.

16. The leakage start-stop protection module according to claim 15, characterized in that: The rotation angle of the driving shaft (2) is 90°.

17. The leakage start-stop protection module according to claim 2, wherein: The conductive elastic sheet includes a connecting plate. The connecting plate is integrally arranged along the axial direction perpendicular to the driving shaft (2). At least a part of the middle of the connecting plate is connected to the mounting portion (23) provided on the driving shaft (2). The two ends of the connecting plate respectively extend beyond the opposite sides of the mounting portion (23) to form elastic arms (32). Each elastic arm (32) is provided with a moving contact portion (33) for cooperating with the static conductive member (4).

18. The leakage start-stop protection module according to claim 17, wherein: The connecting plate is fixedly attached to one side surface of the mounting portion (23). The two ends of the connecting plate respectively extend beyond the mounting portion (23) and bend to form elastic arms (32). A moving contact portion (33) is formed at the end of each elastic arm (32), and the two moving contact portions (33) are located in the same plane parallel to the connecting plate.

19. The leakage start-stop protection module according to claim 18, characterized in that: The connecting plate is a strip-shaped straight plate. The connecting plate is arranged radially along the mounting portion (23). The two ends of the connecting plate are respectively bent along the axial direction of the driving shaft (2) to the same side of the mounting portion (23) to form elastic arms (32). The ends of the elastic arms (32) respectively extend radially outward along the driving shaft (2) to form two moving contact portions (33). On the side facing the static conductive member (4), the moving contact portion (33) and the mounting portion (23) are coplanar.

20. The leakage start-stop protection module according to claim 17, characterized in that: The middle of the connecting plate is bent to form a connecting portion (31). The connecting portion (31) is arranged in the mounting groove (231) of the mounting portion (23), so that the two ends of the connecting portion (31) extend obliquely beyond the mounting groove (231) to form elastic arms (32). The end of each elastic arm (32) is bent to form a contact portion, and the contact surfaces of the two contact portions are located in the same plane.

21. The leakage start-stop protection module according to claim 1, characterized in that: At least one pair of assembly parts is arranged inside the module housing (1). Each pair of locking and assembly parts is symmetrically distributed on the opposite sides of the drive shaft (2). Each assembly part is used for arranging a contact piece (40) of the static conductive part (4). Each assembly part is provided with a wiring groove (104), and the wiring groove (104) corresponds to the wiring part (41) of the contact piece (40).

22. The leakage start-stop protection module according to claim 1, characterized in that: The module housing (1) includes at least two mutually assembled housings. At the splicing part of the two housings, there are mutually clamped buckles (111) and clamping grooves (121), and / or at the splicing part of the two housings, there are mutually inserted grooves and positioning ribs (109).

23. Circuit breaker, including a housing, wherein a leakage protection module is arranged inside the housing, and is characterized in that: The leakage start-stop protection module (A) as described in any one of claims 1-22 is also fixedly arranged inside the outer shell.

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