Tripping mechanism and leakage protection device

Abstract

The embodiment of the invention relates to a tripping mechanism and a leakage protection device. The tripping mechanism comprises a first terminal; the socket part comprises a first static contact; a magnetic field generating mechanism; the rotating mechanism comprises a magnetic assembly; an elastic member; the moving contact is electrically connected with the first terminal, the moving contact abuts against and compresses the elastic component, and the moving contact comprises a first moving contact arranged corresponding to the first static contact; under the condition that external acting force is applied to the rotating mechanism, the moving contact can rotate around the axis in the first direction so that the first moving contact can make contact with the first static contact. And under the condition that the magnetic field generating mechanism generates the first magnetic field, the moving contact rotates around the axis in a second direction under the interaction between the magnetic assembly and the first magnetic field, so that the first moving contact is separated from the first static contact, and the second direction is different from the first direction. In this way, the number of parts needed by the tripping mechanism can be reduced, and then the manufacturing process is simplified.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of electrical equipment, and more particularly, to a tripping mechanism and a leakage protection device. Background Art

[0002] A leakage protection device is a grounding protection device used to prevent accidents caused by electric shock and leakage. The leakage protection device can detect leakage current and quickly cut off the power supply when leakage occurs, thereby protecting the safety of personnel and loads. The leakage protection device usually includes a tripping mechanism. The tripping mechanism can at least perform a disconnection operation to cut off the power supply.

[0003] In order to provide the holding force between the moving contact and the stationary contact in the tripping mechanism in the contact state, the stationary contact in the existing tripping mechanism is connected with a spring and a metal part, and connected to the socket terminal and the output terminal through a flexible wire. Such a design has many problems, such as requiring more parts and complex manufacturing processes, etc. These problems will affect the performance and cost of the tripping mechanism. Summary of the invention

[0004] The embodiments of the present disclosure provide a tripping mechanism and a leakage protection device to at least partially solve the above-mentioned problems and other potential problems existing in the prior art.

[0005] According to the first aspect of the present disclosure, a tripping mechanism is provided. The tripping mechanism includes: a first terminal; a socket portion including a first static contact; a magnetic field generating mechanism configured to generate a first magnetic field in a first power-on state; and a rotating mechanism including: a magnetic assembly; an elastic component, one end of the elastic component being fixed relative to the magnetic assembly; and a moving contact, the moving contact being electrically connected to the first terminal, the moving contact abutting against and compressing the elastic component, the moving contact being able to rotate with the magnetic assembly, the moving contact including a first moving contact arranged corresponding to the first static contact; wherein in the case where an external force is applied to the rotating mechanism, the moving contact is able to rotate around the axis in a first direction so that the first moving contact contacts the first static contact; and wherein in the case where the magnetic field generating mechanism generates the first magnetic field, the moving contact rotates around the axis in a second direction under the interaction between the magnetic assembly and the first magnetic field so that the first moving contact is separated from the first static contact, and the second direction is different from the first direction.

[0006] In the embodiments of the present disclosure, by arranging the elastic component in the rotating mechanism, on the one hand, the metal parts and soft wires for connecting the static contact to the socket terminal and the output terminal in the existing solution can be omitted, thereby reducing the parts required for the tripping mechanism, thereby simplifying the manufacturing process and reducing the cost. On the other hand, the elastic component can be used to provide a holding force between the moving contact and the static contact in the contact state, thereby effectively ensuring the stability of the tripping mechanism in the on state.

[0007] In one embodiment, when the first moving contact is separated from the first static contact, the passive contact of the elastic component is compressed to have a first length, and when the first moving contact is in contact with the first static contact, the passive contact of the elastic component is compressed to have a second length, and the second length is less than the first length. In this embodiment, the rebound force of the elastic component on the moving contact will keep the first moving contact on the moving contact in close contact with the first static contact in the on state, thereby further improving the stability of the on state of the trip mechanism.

[0008] In one embodiment, the rotating mechanism further comprises: a stopper, the stopper being fixed relative to the magnetic assembly; wherein the moving contact is separated from the stopper when the first moving contact is in contact with the first static contact, and wherein the moving contact abuts against the stopper when the first moving contact is separated from the first static contact. In this embodiment, the stopper can effectively avoid the unwanted movement of the moving contact in the tripping mechanism, thereby avoiding accidental contact between the moving contact and the static contact, and thus effectively ensuring the reliability of the tripping mechanism function.

[0009] In one embodiment, the rotating mechanism further comprises: a housing, the housing can rotate with the magnetic assembly, the housing accommodates the elastic component, the stopper is fixed in the housing, the movable contact extends through the housing, and the first movable contact is located outside the housing. In this embodiment, the housing can be used to confine the relevant components within a predetermined space, thereby facilitating the regular arrangement of the components and protecting the internal components.

[0010] In one embodiment, the housing includes: a base, the base is fixed relative to the magnetic assembly; and a cover, the cover is detachably fixed to the base. In this way, the components included in the housing can be easily installed and replaced, so that the trip mechanism is easy to assemble and the time required to assemble the trip mechanism is reduced.

[0011] In one embodiment, the moving contact further includes a recessed portion, and the housing includes a convex portion, which is arranged corresponding to the recessed portion of the moving contact to limit the movement of the moving contact relative to the housing along the extension direction of the moving contact. In this way, the moving contact can always be kept at a predetermined position in the extension direction during the operation of the tripping mechanism without sliding, thereby effectively ensuring the normal use of the tripping mechanism.

[0012] In one embodiment, the magnetic field generating mechanism includes: a magnetic core; a first coil, the first coil is wound on the magnetic core, in a first power-on state, current flows through the first coil in a first current direction to generate a first magnetic field; and a magnetic conductor, the magnetic conductor is arranged at both ends of the magnetic core, and when there is no current in the first coil, the magnetic conductor can interact with the magnetic component to maintain contact between the magnetic conductor and the magnetic component. In this way, the automatic disconnection of the tripping mechanism can be achieved, and the position of the rotating mechanism can be maintained without additional components, thereby improving the performance and automation of the tripping mechanism.

[0013] In one embodiment, the magnetic field generating mechanism is further configured to generate a second magnetic field in the second power-on state, the direction of the second magnetic field is opposite to the first magnetic field, and the external force is generated by the interaction between the magnetic component and the second magnetic field. In this way, the automatic disconnection and automatic connection of the tripping mechanism can be achieved, thereby further improving the performance and automation of the tripping mechanism.

[0014] In one embodiment, the magnetic field generating mechanism further includes: a second coil, the second coil is wound around the magnetic core, and in the second power-on state, the current flows through the second coil in the second current direction to generate a second magnetic field. In this way, two opposite magnetic fields can be generated by the magnetic field generating mechanism, thereby realizing automatic connection and automatic disconnection of the tripping mechanism, thereby improving the performance and automation of the tripping mechanism.

[0015] In one embodiment, in the second power-on state, the current flows through the first coil in a second current direction to generate a second magnetic field, and the second current direction is opposite to the first current direction. In this way, two different magnetic fields can be generated using only one coil, so that the automatic connection and automatic disconnection of the trip mechanism can be achieved without increasing the manufacturing cost of the trip mechanism.

[0016] In one embodiment, the tripping mechanism further includes: a second terminal including a second static contact; wherein the movable contact further includes a second movable contact corresponding to the second static contact; and wherein when the first movable contact is separated from the first static contact, the second movable contact is separated from the second static contact, and when the first movable contact is in contact with the first static contact, the second movable contact is in contact with the second static contact. In this way, the tripping mechanism can provide protection for multiple loads at the same time, thereby improving the performance and space utilization of the tripping mechanism.

[0017] According to a second aspect of the present disclosure, a leakage protection device is provided. The leakage protection device comprises a tripping mechanism according to the first aspect of the present disclosure.

[0018] In one embodiment, the leakage protection device further includes: a first button configured to trigger an external force to be applied to the rotating mechanism; and a second button configured to set the magnetic field generating mechanism to the first power-on state. In this way, not only can the function of the tripping mechanism be quickly and safely detected, but the tripping mechanism can also be conveniently reset.

[0019] This Summary is provided to introduce a selection of concepts in a simplified form that are further described in the Detailed Description below. This Summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the embodiments of the present disclosure will become more easily understood by the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0021] Figure 1 A schematic structural diagram of a tripping mechanism according to an embodiment of the present disclosure is shown;

[0022] Figure 2 A schematic structural diagram of a rotating mechanism according to an embodiment of the present disclosure is shown;

[0023] Figure 3 A top view showing the structure of the rotating mechanism after the cover is removed according to an embodiment of the present disclosure;

[0024] Figure 4A A schematic diagram showing a partial structure of a tripping mechanism according to an embodiment of the present disclosure;

[0025] Figure 4B A top view showing a partial structure of a tripping mechanism according to an embodiment of the present disclosure;

[0026] Figure 4C An AA cross-sectional view showing a partial structure of a tripping mechanism according to an embodiment of the present disclosure;

[0027] Figure 4D A BB cross-sectional view showing a partial structure of a tripping mechanism according to an embodiment of the present disclosure;

[0028] Figure 4E A BB cross-sectional view showing a partial structure of a tripping mechanism according to another embodiment of the present disclosure;

[0029] Figure 5A A top view of a trip mechanism in an on state according to an embodiment of the present disclosure is shown;

[0030] Figure 5BA CC cross-sectional view of a trip mechanism in a switched-on state according to an embodiment of the present disclosure is shown;

[0031] Figure 5C A CC cross-sectional view showing a trip mechanism in an on state according to another embodiment of the present disclosure;

[0032] Figure 5D A DD cross-sectional view of a trip mechanism in a switched-on state according to an embodiment of the present disclosure is shown;

[0033] Fig. 6A A top view of a trip mechanism in a disconnected state according to an embodiment of the present disclosure is shown;

[0034] Figure 6B EE cross-sectional view showing a trip mechanism in an off state according to one embodiment of the present disclosure;

[0035] Figure 6C FF cross-sectional view showing a trip mechanism in an off state according to an embodiment of the present disclosure; and

[0036] Figure 7 A schematic diagram of a leakage protection device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0037] The principles of the present disclosure will now be described with reference to the various exemplary embodiments shown in the accompanying drawings. It should be understood that the description of these embodiments is only to enable those skilled in the art to better understand and further implement the present disclosure, and is not intended to limit the scope of the present disclosure in any way. It should be noted that similar or identical reference numerals may be used in the figures where feasible, and similar or identical reference numerals may represent similar or identical functions. Those skilled in the art will readily recognize from the following description that alternative embodiments of the structures described herein may be adopted without departing from the principles of the present invention described herein.

[0038] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an exemplary embodiment" and "an embodiment" mean "at least one exemplary embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0039] As mentioned above, the existing tripping mechanism has problems such as requiring many parts and complex manufacturing process. These problems will affect the performance and cost of the tripping mechanism. The various embodiments of the present disclosure provide a variety of implementation methods to at least solve the above problems. Figures 1 to 7 The principles of the present disclosure are described in detail in conjunction with exemplary embodiments.

[0040] Figure 1 FIG. 1 shows a schematic structural diagram of a tripping mechanism 100 according to an embodiment of the present disclosure. Figure 1 As shown in , the trip mechanism 100 includes a first terminal 110, a socket portion 120, a magnetic field generating mechanism 130 and a rotating mechanism 140. The first terminal 110 can be configured to receive power from the outside (for example, from a power grid). The socket portion 120 includes a first static contact 121, and the socket portion 120 can be configured to transmit power from the first terminal 110 to a corresponding load (not shown) in the on state (also referred to as the closed state) of the trip mechanism 100. Figure 1 In the illustrated embodiment, the trip mechanism 100 further includes a second terminal 150. The second terminal 150 includes a second stationary contact 152 and is configured to transfer power from the first terminal 110 to a downstream load (not shown) when the trip mechanism 100 is in an on state.

[0041] It should be understood that the power flow described above is only exemplary. The scope of the present disclosure is not limited in this respect. For example, in another embodiment, the second terminal 150 can be configured to receive power from the outside, and accordingly, the first terminal 110 is configured to transmit the power from the second terminal 150 to the downstream load when the trip mechanism 100 is in the on state.

[0042] Figure 2 FIG. 1 shows a schematic diagram of the structure of the rotating mechanism 140 according to an embodiment of the present disclosure. Figure 1 and Figure 2 As shown in , the rotating mechanism 140 includes a magnetic component 141 and a shell 145 and a moving contact 143 arranged on both sides of the magnetic component 141. The moving contact 143 includes a first moving contact 1431 arranged corresponding to the first static contact 121 and a second moving contact 1432 arranged corresponding to the second static contact 152. The first moving contact 1431 and the second moving contact 1432 are arranged at both ends of the moving contact 143. The moving contact 143 is connected to the first terminal 110 via the conductor 112. The moving contact 143 extends through the shell 145 via the through holes on both sides of the shell 145. The first moving contact 1431 and the second moving contact 1432 are located outside the shell 145. The shell 145 and the moving contact 143 can rotate around the axis X together with the magnetic component 141. The components inside the shell 145 will be referred to below. Figure 4CDescribed in further detail.

[0043] exist Figure 2 In the illustrated embodiment, the first movable contact 1431 is shown as a circle. It should be understood that the first movable contact 1431 can also be designed as other shapes, such as a rectangle. In addition, the first movable contact 1431 and the second movable contact 1432 can also be arranged at other appropriate positions of the movable contact 143, and are not limited to being arranged at the end of the movable contact 143. In addition, Figure 2 The arrangement and number of the magnetic assembly 141 , the housing 145 , and the moving contacts 143 shown in FIG. 1 are merely illustrative, and the scope of the present disclosure is not limited in this regard.

[0044] exist Figure 2 In the illustrated embodiment, the housing 145 includes two parts, namely, a base 1451 and a cover 1452. The base 1451 is fixed relative to the magnetic assembly 141, and the cover 1452 is fixed to the base 1451 in a snap-fit ​​manner. It should be understood that the snap-fit ​​manner is only illustrative and not restrictive, and the cover 1452 can also be fixed to the base 1451 in any other detachable manner, such as by means of magnetic connection, etc. In this way, the moving contact 143 and the remaining components included in the housing 145 can be easily installed and replaced, so that the trip mechanism 100 is easy to assemble and the time required to assemble the trip mechanism 100 is reduced.

[0045] Figure 3 FIG. 1 shows a top view of the structure of the rotating mechanism 140 after removing the cover 1452 according to an embodiment of the present disclosure. Figure 3 As shown, the moving contact 143 extends through the housing 145, and the moving contact 143 also includes two recesses 1433. The base 1451 of the housing 145 includes two protrusions 1453, which are respectively arranged corresponding to the two recesses 1433 of the moving contact 143, so as to limit the movement of the moving contact 143 relative to the housing 145 in its extension direction. In this way, the moving contact 143 can always be kept at a predetermined position in its extension direction during the operation of the tripping mechanism 100 without sliding, so as to effectively ensure the normal use of the tripping mechanism 100.

[0046] In other embodiments, the recess 1433 and the protrusion 1453 may also be provided at other appropriate positions. For example, the protrusion 1453 may be provided on the cover 1452 of the housing 145 instead of on the base 1451. For another example, the recess 1433 may be provided on the housing 145, and the protrusion 1453 may be provided on the moving contact 143. In addition, the number of the recess 1433 and the protrusion 1453 may also be other values, for example, one, three, etc. This may be selected according to the design requirements and cost budget of the trip mechanism 100.

[0047] exist Figure 2 and Figure 3 In the example shown, the movable contact 143 is implemented in the form of a spring. It should be understood that the movable contact 143 can also be implemented in other suitable forms such as a rod, and the scope of the present disclosure is not limited in this respect.

[0048] For the purpose of clarity of illustration, reference is made to FIG. 4A to FIG. 4E The local structural details of the trip mechanism 100 according to the embodiment of the present disclosure are described. Figure 4A A schematic diagram showing a partial structure of a tripping mechanism 100 according to an embodiment of the present disclosure is shown. Figure 4B A top view showing a partial structure of a tripping mechanism 100 according to an embodiment of the present disclosure is shown. Figure 4C AA cross-sectional view showing a partial structure of the tripping mechanism 100 according to an embodiment of the present disclosure, Figure 4D A BB cross-sectional view showing a partial structure of a tripping mechanism 100 according to an embodiment of the present disclosure, and Figure 4E FIG. 2 is a cross-sectional view taken along line BB showing a partial structure of a tripping mechanism 100 according to another embodiment of the present disclosure. FIG. 4A to FIG. 4E The partial structure shown in FIG. 1 does not include the first terminal 110 , the socket portion 120 , and the second terminal 150 .

[0049] like Figure 4A and Figure 4BAs shown in , the magnetic component 141 of the rotating mechanism 140 is arranged corresponding to the magnetic field generating mechanism 130, so that the magnetic component 141 can drive the entire rotating mechanism 140 to rotate under the action of the magnetic field generated by the magnetic field generating mechanism 130. One end of the conductor 112 is connected to the first terminal 110, and the other end of the conductor 112 is fixedly connected to the moving contact 143, for example, by welding, so that when the moving contact 143 rotates with the rotating mechanism 140, the first terminal 110 always maintains an electrical connection with the moving contact 143 via the conductor 112. The conductor 112 can be implemented in the form of a soft wire, for example. It should be understood that the moving contact 143 can also be implemented and maintained electrically connected to the first terminal 110 in any other suitable manner. Through the above design, the rotation of the moving contact 143 can be used to simultaneously control the connection between the first terminal 110 and the socket part 120 and the second terminal 150, which will be referred to below. FIG. 5A to FIG. 6C In this way, the tripping mechanism 100 can provide protection for multiple loads at the same time, thereby further improving the performance and space utilization of the tripping mechanism 100.

[0050] refer to Figure 4C , the rotating mechanism 140 also includes an elastic component 142 and a stopper 144 accommodated in a shell 145. The stopper 144 is fixed in the shell 145, and one end of the elastic component 142 abuts against the stopper 144, so that the stopper 144 and the end of the elastic component 142 are both fixed relative to the magnetic component 141. The other end of the elastic component 142 abuts against the moving contact 143, and the elastic component 142 is always in a compressed state. With the help of the shell 145, related components such as the elastic component 142 can be confined within a predetermined space, thereby facilitating the regular arrangement of components and protecting internal components. In the drawings of the present disclosure, the elastic component 142 is illustrated by taking a spring as an example. However, it should be understood that the elastic component 142 may also include other components besides the spring, or the elastic component 142 may be implemented using other components besides the spring. In addition, Figure 4C The arrangement and number of the elastic member 142 , the movable contact 143 , and the stopper 144 shown in FIG. 1 are merely exemplary, and the scope of the present disclosure is not limited in this regard.

[0051] exist Figure 4CIn the case shown, the trip mechanism 100 is in a disconnected state (also called an off state), that is, the first moving contact 1431 is separated from the first static contact 121. In this disconnected state, the second moving contact 1432 is also separated from the second static contact 152. The elastic component 142 compresses the passive contact 143 to have a first length L1. The moving contact 143 abuts against the stopper 144 under the action of the rebound force of the elastic component 142, thereby remaining stationary relative to the rotating mechanism 140. In this way, the undesirable movement of the moving contact 143 in the trip mechanism 100 can be effectively avoided, thereby avoiding accidental contact between the moving contact and the static contact. In this way, the reliability of the function of the trip mechanism 100 can be effectively guaranteed.

[0052] refer to Figure 4D , which shows a magnetic field generating mechanism 130 and a magnetic assembly 141 in a bistable double coil configuration. The magnetic assembly 141 includes a permanent magnet 1413, a first magnetic portion 1411, and a second magnetic portion 1412. The first magnetic portion 1411 and the second magnetic portion 1412 are respectively arranged at the north pole (N pole) and the south pole (S pole) of the permanent magnet 1413. The surface areas of the first magnetic portion 1411 and the second magnetic portion 1412 are larger than the surface areas of the N pole and the S pole of the permanent magnet 1413, so that the contact area of ​​the N pole and the S pole is enlarged, so as to facilitate the interaction between the magnetic assembly 141 and the magnetic field generating mechanism 130.

[0053] exist Figure 4D In the illustrated embodiment, the magnetic field generating mechanism 130 includes a magnetic core 131, a first coil 132, a second coil 134 and a magnetic conductor 133. The first coil 132 and the second coil 134 are respectively wound on the magnetic core 131 in a certain winding direction. In the first power-on state of the magnetic field generating mechanism 130, the current flows through the first coil 132 in a first current direction to generate a first magnetic field. In the second power-on state of the magnetic field generating mechanism 130, the current flows through the second coil 134 in a second current direction to generate a second magnetic field opposite to the first magnetic field. In some embodiments, the second current direction is different from the first current direction. For example, the second current direction is opposite to the first current direction. In this way, two opposite magnetic fields can be generated by the magnetic field generating mechanism 130, thereby realizing automatic connection and automatic disconnection of the tripping mechanism 100, and improving the performance and automation of the tripping mechanism 100.

[0054] like Figure 4DAs shown, the magnetic conductor 133 is disposed at both ends of the magnetic core 131, and extends the magnetic field generated by the magnetic core 131 to the vicinity of the magnetic poles of the magnetic assembly 141, so that the magnetic assembly 141 interacts with the magnetic field generated by the magnetic field generating mechanism 130. In addition, when there is no current in the first coil 132, the magnetic conductor 133 can interact with the magnetic assembly 141 to maintain the contact between the magnetic conductor 133 and the magnetic assembly 141. The magnetic conductor 133 can be implemented, for example, using a ferromagnetic material such as iron.

[0055] Reference below Figure 4E , which shows a magnetic field generating mechanism 130 and a magnetic assembly 141 in a bistable single coil configuration. Figure 4D The magnetic field generating mechanism 130 in the bistable dual coil configuration shown includes two coils. Figure 4E In the bistable single coil configuration shown, the magnetic field generating mechanism 130 includes only one coil, namely the first coil 132. The first coil 132 is wound on the magnetic core 131 in a certain winding direction. In the first power-on state, the current flows through the first coil 132 in a first current direction to generate a first magnetic field. In some embodiments, the magnetic field generating mechanism 130 of the bistable single coil configuration may also have a second power-on state. In the second power-on state, the current flows through the first coil 132 in a second current direction opposite to the first current direction to generate a second magnetic field opposite to the first magnetic field. In this way, two different magnetic fields can be generated using only one coil, so that the automatic connection and automatic disconnection of the tripping mechanism 100 can be achieved without increasing the manufacturing cost of the tripping mechanism 100.

[0056] It should be understood that Figure 4D and Figure 4E The design and arrangement of the magnetic field generating mechanism 130 and the magnetic assembly 141 shown in the figure are only illustrative. The magnetic field generating mechanism 130 and the magnetic assembly 141 may also be designed or arranged in any other suitable manner. The scope of the present disclosure is not limited in this respect.

[0057] The following will be combined FIG. 5A to FIG. 6C The working process of the tripping mechanism 100 according to the embodiment of the present disclosure is described in detail.

[0058] Figure 5A 1 shows a top view of the trip mechanism 100 in the switched-on state according to an embodiment of the present disclosure, Figure 5B FIG. 2 shows a CC cross-sectional view of a trip mechanism 100 in a switched-on state according to an embodiment of the present disclosure. Figure 5C A CC cross-sectional view of a trip mechanism 100 in a switched-on state according to another embodiment of the present disclosure is shown, and Figure 5DA DD cross-sectional view of the trip mechanism 100 in the on state according to the embodiment of the present disclosure is shown.

[0059] When an external force is applied to the rotating mechanism 140, the rotating mechanism 140 rotates in the first direction D1 around the axis X. Figure 5D In the figure, the first direction D1 is shown as a clockwise direction. In one embodiment, the external force can be applied by an operator, for example, by a mechanical switch, by hand, etc. In another embodiment, the external force can also be generated by the interaction between the magnetic field generated by the magnetic field generating mechanism 130 and the magnetic component 141. For example, the magnetic field generating mechanism 130 generates a second magnetic field in the second power-on state described above. The two poles of the second magnetic field extend to the vicinity of the magnetic component 141 via the magnetic conductor 133. Figure 5D As shown, the upper magnetic conductor 133 is attracted to the first magnetic part 1411 of the magnetic assembly 141 and repelled from the second magnetic part 1412, and the lower magnetic conductor 133 is repelled from the first magnetic part 1411 of the magnetic assembly 141 and attracted to the second magnetic part 1412. Therefore, the magnetic assembly 141 rotates around the axis X in the first direction D1 under the action of the second magnetic field, thereby driving the entire rotating mechanism 140 including the moving contact 143 to rotate around the axis X in the first direction D1.

[0060] As the rotating mechanism 140 rotates in the first direction D1 around the axis X, the first movable contact 1431 and the second movable contact 1432 contact the first stationary contact 121 and the second stationary contact 152 , respectively, so that the first terminal 110 is connected to the socket portion 120 and the second terminal 150 . Figure 5B The schematic diagram shows the state of the tripping mechanism 100 when the first moving contact 1431 and the second moving contact 1432 have just contacted the first static contact 121 and the second static contact 152 respectively. At this time, the moving contact 143 has not yet separated from the stopper 144, so the moving contact 143 has not further compressed the elastic component 142. In other words, the length of the compressed elastic component 142 at this moment is still equal to the first length L1 in the disconnected state of the tripping mechanism 100 mentioned above. At this moment, whether the rotating mechanism 140 will continue to rotate in the first direction D1 depends on the positional relationship between the first magnetic part 1411 and the second magnetic part 1412 of the magnetic component 141 and the magnetic conductor 133 of the magnetic field generating mechanism 130.

[0061] In one embodiment, Figure 5B In the state shown, the first magnetic portion 1411 and / or the second magnetic portion 1412 of the magnetic assembly 141 have contacted the magnetic conductor 133 of the magnetic field generating mechanism 130 (eg, Figure 5D), the rotating mechanism 140 will not be able to continue rotating in the first direction D1. In this case, under the interaction between the magnetic assembly 141 and the magnetizer 133, the magnetizer 133 at the bottom keeps in contact with the second magnetic portion 1412 of the magnetic assembly 141, and the magnetizer 133 at the top keeps in contact with the first magnetic portion 1411 of the magnetic assembly 141. This keeps the rotating mechanism 140 in the current position to ensure that the first moving contact 1431 and the second moving contact 1432 keep in contact with the first static contact 121 and the second static contact 152, respectively.

[0062] In another embodiment, Figure 5B In the state shown, the first magnetic portion 1411 and the second magnetic portion 1412 of the magnetic assembly 141 have not yet contacted the magnetic conductor 133 of the magnetic field generating mechanism 130, and the rotating mechanism 140 will continue to rotate in the first direction D1 under the interaction between the magnetic assembly 141 and the magnetic conductor 133, so that the moving contact 143 is separated from the stopper 144 and the elastic component 142 is further compressed until the rotating mechanism 140 stops rotating. Figure 5C As shown in . At this time, the elastic component 142 is compressed by the moving contact 143 to have a second length L2, and the second length L2 is less than the first length L1. Therefore, the rebound force of the elastic component 142 on the moving contact 143 will make the first moving contact 1431 and the second moving contact 1432 on the moving contact 143 maintain close contact with the first static contact 121 and the second static contact 152 respectively. In other words, the elastic component 142 provides a holding force between the moving contact and the static contact in the contact state, thereby further improving the stability of the on state of the trip mechanism 100.

[0063] Fig. 6A 1 shows a top view of the trip mechanism 100 in a disconnected state according to an embodiment of the present disclosure, Figure 6B EE cross-sectional view of the trip mechanism 100 in the disconnected state according to one embodiment of the present disclosure is shown, and Figure 6C A FF cross-sectional view of the trip mechanism 100 in an off state according to an embodiment of the present disclosure is shown.

[0064] When the magnetic field generating mechanism 130 generates a first magnetic field in the first power-on state, the two poles of the first magnetic field extend to the vicinity of the magnetic component 141 via the magnetic conductor 133. Figure 6C As shown, the upper magnetizer 133 repels the first magnetic part 1411 of the magnetic assembly 141 and attracts the second magnetic part 1412, and the lower magnetizer 133 attracts the first magnetic part 1411 of the magnetic assembly 141 and repels the second magnetic part 1412. Therefore, under the action of the first magnetic field, the magnetic assembly 141 rotates around the axis X in a second direction D2 different from the first direction D1. Figure 6C The second direction D2 is counterclockwise. The rotation of the magnetic assembly 141 drives the entire rotating mechanism 140 including the moving contact 143 to rotate around the axis X in the second direction D2. This causes the first moving contact 1431 and the second moving contact 1432 to separate from the first static contact 121 and the second static contact 152, respectively, so that the first terminal 110 is disconnected from the socket portion 120 and the second terminal 150. Figure 6B In this process, the moving contact 143 abuts against the stopper 144 again under the action of the rebound force of the elastic component 142, thereby keeping relatively still with the rotating mechanism 140.

[0065] In the example scenario where the tripping mechanism 100 is applied to the leakage protection device 200, when the tripping mechanism 100 is in the on state, the load of the leakage protection device 200 is connected to the power supply. When a leakage fault occurs, the leakage current flows through the first coil 132 (corresponding to the first power-on state), so that the magnetic field generating mechanism 130 generates a first magnetic field, and through the process described above, the connection between the first terminal 110 and the socket part 120 and the second terminal 150 is disconnected to automatically cut off the power supply. After the power supply is cut off, since the leakage current disappears, the current in the first coil 132 also disappears. At this time, under the interaction between the magnetic component 141 and the magnetic conductor 133, the magnetic conductor 133 located at the bottom continues to maintain contact with the first magnetic part 1411 of the magnetic component 141, and the magnetic conductor 133 located at the top continues to maintain contact with the second magnetic part 1412 of the magnetic component 141, so that the tripping mechanism 100 can continue to maintain the disconnected state. In other words, the leakage protection device 200 continues to cut off the power supply, so as to protect the safety of personnel and loads.

[0066] It can be seen from the above description that in the tripping mechanism 100 according to each embodiment of the present disclosure, by setting the elastic component 142 in the rotating mechanism 140, on the one hand, the metal parts and soft wires for connecting the static contact to the socket terminal and the output terminal in the existing solution can be omitted, thereby reducing the number of parts, simplifying the manufacturing process and reducing the cost. On the other hand, the elastic component 142 can be used to provide a holding force between the moving contact and the static contact in the contact state, thereby effectively ensuring the stability of the tripping mechanism 100 in the on state.

[0067] The following will be combined Figure 7 A residual current protection device 200 according to an example embodiment of the present disclosure is described. Figure 7A schematic diagram of a leakage protection device 200 according to an embodiment of the present disclosure is shown. As an example, the leakage protection device 200 may be a ground fault circuit breaker (GFCI) or a residual current device (RCD). However, it should be understood that the leakage protection device 200 may also be any other device for implementing leakage protection.

[0068] exist Figure 7 In the embodiment shown, the leakage protection device 200 includes: a first button 210, a second button 220, and a tripping mechanism 100 ( Figure 7 The first button 210 is configured to trigger an external force to be applied to the rotating mechanism 140. The second button 220 is configured to set the magnetic field generating mechanism 130 to a first power-on state.

[0069] Before the leakage protection device 200 is put into use, the second button 220 can be used to test whether the tripping mechanism 100 in the leakage protection device 200 can work normally. If the first terminal 110 is disconnected from the socket part 120 and the second terminal 150 after the second button 220 is operated, it indicates that the tripping mechanism 100 in the leakage protection device 200 functions normally. Otherwise, the tripping mechanism 100 in the leakage protection device 200 functions abnormally and cannot be put into use temporarily. In this way, the function of the tripping mechanism 100 can be quickly and safely tested.

[0070] After the leakage protection device 200 is put into use and the load is disconnected from the power supply due to the detection of a leakage fault, when the fault is eliminated, the trip mechanism 100 can be restored to the on state by operating the first button 210, thereby restoring power to the load. In this way, the trip mechanism 100 can be conveniently reset.

[0071] It should be understood that the above specific embodiments of the present disclosure are only for the purpose of illustrating or explaining the principles of the present disclosure, and are not intended to limit the scope of the present disclosure. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. At the same time, the claims attached to the present disclosure are intended to cover all variations and modifications that fall within the scope and boundaries of the claims and their equivalents.

Claims

1. A tripping mechanism (100), comprising: A first terminal (110); The socket portion (120) includes a first static contact (121); A magnetic field generating mechanism (130) is configured to generate a first magnetic field in a first power-on state; as well as The rotating mechanism (140) comprises: A magnetic component (141); an elastic component (142), one end of the elastic component (142) being fixed relative to the magnetic component (141); and A moving contact (143), the moving contact (143) being electrically connected to the first terminal (110), the moving contact (143) being against and compressing the elastic component (142), the moving contact (143) being capable of rotating together with the magnetic component (141), and the moving contact (143) comprising a first moving contact (1431) arranged corresponding to the first static contact (121); wherein when an external force is applied to the rotating mechanism (140), the moving contact (143) can rotate around an axis (X) in a first direction (D1) so that the first moving contact (1431) contacts the first stationary contact (121); and Wherein, when the magnetic field generating mechanism (130) generates the first magnetic field, the moving contact (143) rotates in a second direction (D2) around the axis (X) under the interaction between the magnetic component (141) and the first magnetic field, so that the first moving contact (1431) is separated from the first static contact (121), and the second direction (D2) is different from the first direction (D1).

2. The tripping mechanism (100) according to claim 1, wherein in a state where the first moving contact (1431) is separated from the first stationary contact (121), the elastic component (142) is compressed by the moving contact (143) to have a first length (L1), and When the first moving contact (1431) is in contact with the first stationary contact (121), the elastic component (142) is compressed by the moving contact (143) to have a second length (L2), and the second length (L2) is smaller than the first length (L1).

3. The tripping mechanism (100) according to claim 2, wherein the rotating mechanism (140) further comprises: A stopper (144), wherein the stopper (144) is fixed relative to the magnetic component (141); in In a state where the first moving contact (1431) is in contact with the first stationary contact (121), the moving contact (143) is separated from the stopper (144), and When the first moving contact (1431) is separated from the first stationary contact (121), the moving contact (143) abuts against the stopper (144).

4. The tripping mechanism (100) according to claim 3, wherein the rotating mechanism (140) further comprises: A shell (145), wherein the shell (145) is capable of rotating together with the magnetic component (141), the shell (145) accommodates the elastic component (142), the stopper (144) is fixed in the shell (145), the moving contact (143) extends through the shell (145), and the first moving contact (1431) is located outside the shell (145).

5. The trip mechanism (100) according to claim 4, wherein the housing (145) comprises: A base (1451), the base (1451) being fixed relative to the magnetic component (141); as well as A cover (1452), wherein the cover (1452) is fixed to the base (1451) in a detachable manner.

6. The tripping mechanism (100) according to claim 4, wherein the moving contact (143) further comprises a recess (1433), and the housing (145) comprises: A convex portion (1453) is arranged corresponding to the concave portion (1433) of the moving contact (143) to limit the movement of the moving contact (143) relative to the housing (145) along the extension direction of the moving contact (143).

7. The tripping mechanism (100) according to claim 1, wherein the magnetic field generating mechanism (130) comprises: Magnetic core (131); a first coil (132), the first coil (132) being wound around the magnetic core (131), and in the first energized state, a current flows through the first coil (132) in a first current direction to generate the first magnetic field; as well as A magnetic conductor (133), wherein the magnetic conductor (133) is arranged at two ends of the magnetic core (131), and when there is no current in the first coil (132), the magnetic conductor (133) can interact with the magnetic component (141) to maintain contact between the magnetic conductor (133) and the magnetic component (141).

8. The tripping mechanism (100) according to claim 7, wherein the magnetic field generating mechanism (130) is further configured to generate a second magnetic field in a second power-on state, the direction of the second magnetic field being opposite to that of the first magnetic field, and the external force is generated by the interaction between the magnetic component (141) and the second magnetic field.

9. The tripping mechanism (100) according to claim 8, wherein the magnetic field generating mechanism (130) further comprises: A second coil (134), the second coil (134) is wound around the magnetic core (131), and in the second energized state, current flows through the second coil (134) in a second current direction to generate the second magnetic field.

10. The trip mechanism (100) according to claim 8, wherein in the second energized state, current flows through the first coil (132) in a second current direction to generate the second magnetic field, and the second current direction is opposite to the first current direction.

11. The tripping mechanism (100) according to any one of claims 1 to 10, further comprising: A second terminal (150) including a second stationary contact (152); The movable contact (143) further comprises a second movable contact (1432) arranged corresponding to the second static contact (152); and When the first moving contact (1431) is separated from the first static contact (121), the second moving contact (1432) is separated from the second static contact (152), and when the first moving contact (1431) is in contact with the first static contact (121), the second moving contact (1432) is in contact with the second static contact (152).

12. A leakage protection device (200), comprising: A tripping mechanism (100) according to any one of claims 1 to 11.

13. The leakage protection device (200) according to claim 12, further comprising: a first button (210) configured to trigger the external force to be applied to the rotating mechanism (140); as well as The second button (220) is configured to set the magnetic field generating mechanism (130) to the first power-on state.

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