Power supply control mechanism

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, a reset button of the power supply control mechanism is in hasp fit with a tripping rod and in transmission fit with a tripper, a control module is electrically connected with the tripper through a connecting circuit, and a switch contact system is connected in series in the connecting circuit; when the reset button is at the hasp position / tripping position, the switch contact system is switched on / off; in the switch contact system, a switch moving contact mechanism is linked with a reset button, and a switch static contact is provided with a first position and a second position. In the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to make initial contact with the switch static contact located at the first position, and then the switch static contact is driven to move to the second position through the switch moving contact mechanism. When the reset button moves to the tripping position, the switch static contact is reset to the first position; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low voltage apparatus, concretely relates to a power supply control mechanism. BACKGROUND

[0002] As Figure 16 As shown in the figure, the existing circuit breaker with residual current protection function, from the outgoing line end of the main circuit output power after rectifier circuit (VD1-6 in the figure) rectification, the AC signal becomes DC signal, the DC signal is divided by the voltage dividing circuit (resistor R5-6 in the figure) after voltage division provides the electric signal for the leakage processing chip (IC in the figure) of control module, the DC signal directly with the electromagnetic coil (KA in the figure) of the release and the thyristor (VT2 in the figure) of control module constitutes a loop (action loop);Normal state, thyristor is disconnected, and the action loop is not conducted;When the main circuit occurs leakage fault, the leakage processing chip detects the fault signal, triggers the thyristor conduction, then the action loop is conducted, and the electromagnetic coil of the release is energized, so that the release acts, thereby driving the operating mechanism of the switch to release.If the circuit breaker is wired correctly (i.e. positive wiring - the incoming line end is connected to the power side lead and the outgoing line end is connected to the load side lead), the power point of the control module is the outgoing line end of the circuit breaker, and after the main circuit of the circuit breaker is disconnected, the power point has no voltage, and the leakage protection function stops working;But if the circuit breaker is reversely wired (i.e. reverse wiring - the incoming line end is connected to the load side lead and the outgoing line end is connected to the power side lead), the power point becomes the incoming line end, and after the leakage protection main loop is disconnected when the leakage signal appears, the residual current protection power supply signal of the product still exists, the thyristor is continuously conducted and greater than the holding current of the thyristor, and under the continuous work of the high current signal, the thyristor will be blown off or the electromagnetic coil of the release will be burned off.

[0003] The existing circuit breaker with residual current protection function, part of which increases the breaking point between the control module and the electromagnetic coil of the release, and the power is disconnected after the main circuit of the circuit breaker is disconnected, so that the thyristor is disconnected and the electromagnetic coil of the release stops working, to solve the above problems;But the breaking point is often realized by elastic metal sheet, and the current-carrying capacity and arc resistance are poor. SUMMARY

[0004] The utility model discloses a power supply control mechanism that has good current-carrying capacity and arc resistance of the switch contact system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A power supply control mechanism, comprising a reset button having a latching position and an unlatching position, an unlatching lever, an unlatching device, a control module electrically connected with the unlatching device through a connecting circuit, and a switch contact system connected in series in the connecting circuit; the reset button is used to latch with the unlatching lever in the latching position, to move to the unlatching position after unlatching with the unlatching lever, and to drive the unlatching device to reset by the unlatching lever and the unlatching lever to recover the latching when moving from the unlatching position to the latching position; the control module is used to take power from a main circuit of a switch electric appliance and to control the unlatching device to act according to a signal, the unlatching lever is driven to move by the unlatching device, and is used to drive an operating mechanism of the switch electric appliance to unlatch and to unlatch the reset button with the unlatching lever; the switch contact system is turned on or turned off when the reset button is in the latching position or the unlatching position;

[0007] The switch contact system comprises a switch movable contact mechanism linked with the reset button and a switch static contact having a first position and a second position; in the process of the reset button moving to the latching position, the switch movable contact mechanism is first driven to move to initial contact with the switch static contact in the first position, and then the switch static contact is driven to move to the second position by the switch movable contact mechanism; in the process of the reset button moving to the unlatching position, the switch static contact is reset to the first position.

[0008] Further, the switch contact system further comprises a switch static contact spring; in the process of the reset button moving to the unlatching position, the switch static contact spring drives the switch static contact to reset to the first position.

[0009] Further, the switch static contact is integrally moved.

[0010] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a static contact mounting structure arranged on a first bottom wall thereof, the static contact mounting structure comprises a static contact spring stop, a static contact guide wall and a static contact limiting stop, two groups of static contact guide walls are oppositely arranged, the switch static contact is slidably arranged between the two groups of static contact guide walls and respectively guided and limited by the two groups of static contact guide walls, the static contact spring stop and the static contact limiting stop are oppositely arranged, the switch static contact spring is a compression spring, one end of the switch static contact spring is matched with the static contact spring stop and the other end of the switch static contact spring is matched with the switch static contact, and the switch static contact spring limits the switch static contact and the static contact limiting stop.

[0011] Further, the switch static contact includes a static contact contact plate, a static contact middle plate, and a static contact support leg, the static contact contact plate is used to close and open with the switch dynamic contact, one side of the static contact middle plate is connected with the static contact contact plate by bending, and the other side is connected with one end of the static contact support leg by bending, the static contact contact plate and the static contact support leg are bent to the same side of the static contact contact plate, the other end of the static contact contact plate and the other end of the static contact support leg are respectively slidably connected with the first bottom wall of the mechanism shell, and the static contact contact plate and the static contact middle plate are respectively guided and limited by the two groups of static contact guide walls.

[0012] Further, each group of the static contact guide wall includes a static contact guide plate, and at least one group of the static contact guide wall further includes a static contact clamping block, one end of the static contact clamping block is connected with the corresponding static contact guide plate, and the other end is protruded to the middle part of the two groups of static contact guide walls, the static contact clamping block is slidably and limitingly connected with the static contact middle plate, and the static contact clamping block is prevented from moving away from the first side wall when the switch static contact slides.

[0013] Further, the switch dynamic contact mechanism includes a switch dynamic contact arranged in a rotating mode, the switch dynamic contact includes a dynamic contact contact part and a dynamic contact driven part, one end of the dynamic contact contact part is connected with the dynamic contact driven part by bending, and the other end is provided with a dynamic contact point used for matching with the switch static contact, and the other end of the dynamic contact driven part is in transmission connection with the reset button.

[0014] In the process that the reset button moves to the latching position, the dynamic contact driven part is pressed to make the switch dynamic contact rotate to close with the switch static contact.

[0015] Further, the switch contact system further includes a first reset member, in the process that the reset button moves to the tripping position, the dynamic contact driven part is avoided, and the first reset member drives the switch dynamic contact to rotate to disconnect with the switch static contact.

[0016] Further, the switch dynamic contact further includes a dynamic contact connecting part arranged on the dynamic contact contact part, the dynamic contact connecting part and the dynamic contact point are respectively arranged on the two sides of the dynamic contact contact part, and the first reset member is a tension spring, one end of the tension spring is fixedly arranged, and the other end is connected with the dynamic contact connecting part.

[0017] Further, the switch dynamic contact further includes a dynamic contact connecting part arranged on the dynamic contact contact part and the bending connection part of the dynamic contact driven part, the dynamic contact connecting part is used for connecting a wire to connect the switch dynamic contact into a corresponding circuit.

[0018] Further, the switch dynamic contact further includes a dynamic contact shaft hole arranged at the bending connection part of the dynamic contact contact part and the dynamic contact driven part, and the switch dynamic contact is arranged on the dynamic contact mounting shaft of the mechanism shell in a rotating mode through the dynamic contact shaft hole.

[0019] Further, the reset button is integrally arranged; the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a button mounting hole; the reset button is integrally arranged and comprises a button head, a button limiting part, a button lock part and a button driving part, the button head is slidably arranged in the button mounting hole and protrudes from one end of the mechanism shell to be operated by external force, the button limiting part is limitedly matched with the mechanism shell to prevent the reset button from being pulled out of the mechanism shell, one end of the button lock part is used for being buckled with the trip lever and the other end is connected with one end of the button driving part, one end of the button driving part is used for being transmissionally matched with the movable contact driving part, and the extension direction of the button driving part is the same as the moving direction of the reset button.

[0020] The power supply control mechanism of the utility model, switch contact system, no matter switch electric appliance positive wiring or reverse wiring, switch contact system can disconnect the power supply circuit of silicon controlled rectifier and tripping device (namely action loop disconnects), guaranteeing that the electromagnetic coil of silicon controlled rectifier and tripping device will not be damaged by long time through large current because of leakage fault.

[0021] In addition, the cooperation mode of the button driving part and the switch movable contact is simple and reliable in transmission. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic view of the utility model switch electric appliance;

[0023] Figure 2 It is the structure schematic view of the utility model switch electric appliance, and the first half shell and the second half shell are in the separated state;

[0024] Figure 3 It is the projection view of the power supply control mechanism of the utility model switch electric appliance;

[0025] Figure 4 It is the three-dimensional structure schematic view of the power supply control mechanism of the utility model switch electric appliance;

[0026] Figure 5 It is the enlarged structure schematic view of S1 part of the utility model; Figure 4

[0027] Figure 6 It is the projection view of the first half shell of the utility model switch electric appliance;

[0028] Figure 7 It is the three-dimensional structure schematic view of the first half shell of the utility model switch electric appliance;

[0029] ​Figure 8 is the enlarged structural schematic view of S2 part of the utility model Figure 7

[0030] Figure 9 is the enlarged structural schematic view of S3 part of the utility model Figure 7

[0031] Figure 10 is the structural schematic view of the second half shell of the switch device of the utility model

[0032] Figure 11 is the enlarged structural schematic view of S4 part of the utility model Figure 10

[0033] Figure 12 is the sectional structural schematic view of the switch device of the utility model

[0034] Figure 13 is the structural schematic view of the reset button of the switch device of the utility model

[0035] Figure 14 is the structural schematic view of the switch moving contact of the switch device of the utility model

[0036] Figure 15 is the structural schematic view of the switch static contact of the switch device of the utility model

[0037] Figure 16 is the electrical schematic view of the circuit breaker with residual current protection function of the prior art.

[0038] Explanation of reference signs

[0039] Leakage operation unit c;

[0040] Reset button r, button head r1, button avoiding slot r11, button connecting side wall r12, button guiding side wall r13, button bottom wall r14, button limiting part r2, button lock catch part r3, button lock catch end r31, button connecting hole r32, button driving part r4;

[0041] Switch contact system a; switch moving contact mechanism 1, switch moving contact 1-1, moving contact contact part 1-11, moving contact driven part 1-12, moving contact connecting part 1-13, moving contact wiring part 1-14, moving contact point 1-15, moving contact shaft hole 1-16, moving contact spring hanging hole 1-17, moving contact wiring hole 1-18; switch static contact mechanism 2, switch static contact 2-1, static contact contact plate 2-11, static contact middle plate 2-12, static contact support leg 2-13, static contact wiring plate 2-14, static contact wiring hole 2-15, switch static contact spring 2-2; first reset piece 7;

[0042] ​​​trip lever 3, trip lever mounting portion 3-2, trip lever cooperation plate 3-1;

[0043] trip unit 4, coil assembly 4-1, top lever 4-2;

[0044] zero sequence current transformer 5;

[0045] drive lever 6;

[0046] housing h, first half housing h1, button mounting hole h1-1, button head guide slot h1-11, button limiting plate h1-2, drive portion guide slot h1-3, static contact mounting structure h1-4, static contact spring stop h1-41, spring stop plate h1-411, spring limiting block h1-412, static contact guide wall h1-42, static contact guide plate h1-421, static contact clamping block h1-422, static contact limiting stop h1-43, moving contact spring column h1-5, moving contact mounting shaft h1-6, trip unit mounting slot h1-7, first trip lever shaft hole h1-8; second half housing h2, drive portion guide rib h2-3, moving contact limiting column h2-6, second trip lever shaft column h2-8, second trip lever shaft hole h2-80; housing guide hole h3;

[0047] circuit breaking unit b. DETAILED DESCRIPTION

[0048] The specific embodiments of the switch device of the utility model are further illustrated by the following examples combined with the drawings. The switch device of the utility model is not limited to the description of the following examples.

[0049] As Figures 1-15 shown, it is one embodiment of the switch device of the utility model, and the switch device of the embodiment is preferably a circuit breaker, specifically a circuit breaker with residual current protection function.

[0050] As Figures 1-2As shown, the switch device of the embodiment comprises an electric leakage operating unit c and at least one set of circuit breaking unit b; the circuit breaking unit b comprises an operating mechanism (i.e. the operating mechanism of the switch device) and a main contact system, the circuit where the main contact system is located is a main circuit, the main contact system comprises a main movable contact and a main static contact used in cooperation, the operating mechanism is in transmission connection with the main movable contact for driving the main movable contact to close and open the main static contact, the operating mechanism is preferably realized by the prior art, for example, the operating mechanism with four-bar linkage structure, which will not be described here; the electric leakage operating unit c comprises a control module and a trip device 4, when the circuit where the circuit breaking unit b is located has an electric leakage fault, the control module controls the trip device 4 to act according to a signal (i.e. an electric leakage fault signal), the trip device 4 drives the operating mechanism to trip, so that the switch device of the embodiment is tripped and opened. Further, the signal can also be a remote opening signal, that is, after the control module receives the remote opening signal, the control module controls the trip device 4 to act, the trip device 4 drives the operating mechanism to trip, so that the switch device of the embodiment is tripped and opened, that is, the electric leakage operating unit c can also realize the remote opening function. Further, the switch device of the embodiment comprises two or more circuit breaking units b, each circuit breaking unit b comprises a main contact system, each circuit breaking unit b can comprise an operating mechanism independent of each other, each operating mechanism can be operated synchronously to close and open through a linkage structure (for example, a linkage handle), and each operating mechanism is driven by the trip device 4 to trip; or, each circuit breaking unit b shares a set of operating mechanisms, and the main movable contact of the main contact system of each circuit breaking unit b is in transmission connection with the operating mechanism. Further, the switch device of the embodiment further comprises a zero sequence current transformer 5, the zero sequence current transformer 5 comprises an induction coil, and the circuit breaking unit b comprises a conductor in series with the main contact system and passing through the zero sequence current transformer 5.

[0051] Further, the electric leakage operating unit c further comprises a reset button r and a tripping lever 3, the tripping lever 3 is in transmission cooperation with a tripping device 4, the reset button r has a latching position and a tripping position, the reset button r is in latching cooperation with the tripping lever 3 when in the latching position; the control module controls the tripping device 4 to act, the tripping device 4 drives the tripping lever 3 to move, the tripping lever 3 is out of latching cooperation with the reset button r and the reset button r moves to the tripping position, the tripping lever 3 simultaneously drives the operating mechanism of the circuit breaking unit b to trip, the operating mechanism cannot be re-latched before the tripping device 4 and the tripping lever 3 are reset; when the reset button r is driven by external force to move to the latching position, the reset button r is in latching cooperation with the tripping lever 3 and simultaneously drives the tripping device 4 to reset through the tripping lever 3, then the operating mechanism can be re-latched and then the closing operation can be performed again; that is, the tripping lever 3 also has two working positions, respectively a locking position and an unlocking position, when the reset button r is in the latching position and the tripping lever 3 is in the locking position, the two are in latching cooperation, when the tripping device 4 acts to drive the tripping lever 3 to move to the unlocking position, the tripping lever 3 is out of latching cooperation with the reset button r and simultaneously drives the operating mechanism to trip, when the reset button r moves from the tripping position to the latching position, the reset button r drives the tripping lever 3 to move from the unlocking position to the locking position, and simultaneously the tripping lever 3 drives the tripping device 4 to reset. Further, the electric leakage operating unit c further comprises a housing h, the tripping device 4, the tripping lever 3 and the control module are all arranged in the housing h; the housing h simultaneously serves as a mechanism housing of the power supply control mechanism of the switch device of the embodiment.

[0052] Specifically, as shown in Figure 2 、 6 -7, 10, 12, the housing h (i.e. the mechanism housing) comprises a first half housing h1 and a second half housing h2 which are relatively combined together.

[0053] Specifically, as shown in Figures 3-8 , 10, 12, the reset button r is integrally arranged to move, preferably linearly slide. Further, the reset button r comprises a button head r1; the mechanism housing (i.e. the housing h) comprises a button mounting hole h1-1, the button head r1 is arranged to slide in the button mounting hole h1-1 and protrudes from the mechanism housing at one end for external force operation. Further, the first half housing h1 is provided with a button head sliding groove, the second half housing h2 is provided with a button head limiting column, the button head limiting column is inserted in the button head sliding groove to form the button mounting hole h1-1.

[0054] Specifically, as shown in Figures 3-7, 10-12, the trip bar 3 is rotatably arranged. Further, the trip bar 3 comprises a trip bar mounting portion 3-2 and a trip bar cooperation plate 3-1, the trip bar mounting portion 3-2 is arranged on one end of the trip bar cooperation plate 3-1, the trip bar 3 is rotatably arranged through the trip bar mounting portion 3-2, the trip bar cooperation plate 3-1 is connected in transmission with the trip unit 4 and is snap-fitted with the reset button r. Further, the trip unit 4 comprises a coil assembly 4-1 and a top rod 4-2, one end of the top rod 4-2 is movably arranged in the coil assembly 4-1 and the other end is connected in transmission with the trip bar cooperation plate 3-1, the transmission mode and the connection mode of the top rod 4-2 and the trip bar cooperation plate 3-1 can be realized by the prior art, which will not be described here. Further, the trip bar cooperation plate 3-1 comprises a trip bar snap hole, the reset button r comprises a button lock portion r3, one end of the button lock portion r3 is arranged in the trip bar snap hole to realize the snap-fitting of the trip bar 3 and the reset button r; the trip bar 3 is rotated under the drive of the trip unit 4, the button lock portion r3 is unlocked from the trip bar snap hole, so that the trip bar 3 and the reset button r are disengaged from the snap-fitting. It should be pointed out that the trip bar 3 is not limited to be rotatably arranged, for example, the trip bar 3 can also be linearly movably arranged, the trip bar 3 moves to the first direction to disengage from the snap-fitting with the reset button r, the reset button r moves to the snap-fitting position to drive the trip bar 3 to move to the second direction, so that the reset button r and the trip bar 3 restore the snap-fitting, and the trip unit 4 is reset by the trip bar 3, the first direction and the second direction are opposite directions. Further, the first half shell h1 of the shell h comprises a first trip bar shaft hole h1-8, the second half shell h2 comprises a second trip bar shaft column h2-8, the second trip bar shaft column h2-8 is provided with a second trip bar shaft hole h2-80, both ends of the rotating shaft of the trip bar 3 are rotatably arranged in the first trip bar shaft hole h1-8 and the second trip bar shaft hole h2-80 respectively; the first half shell h1 comprises a trip unit mounting groove h1-7, the coil assembly 4-1 is fixedly arranged in the trip unit mounting groove h1-7.

[0055] Further, the switch apparatus of the embodiment further comprises a button spring, the button spring acts on the reset button r to make it have a tendency to move to the trip-fitting position, that is, after the reset button r is disengaged from the snap-fitting with the trip bar 3, the button spring drives the reset button r to move from the snap-fitting position to the trip-fitting position, when the reset button r moves to the snap-fitting position, the action force of the button spring needs to be overcome and the button spring needs to store energy.

[0056] As Figures 2-4As shown, the switch device of the embodiment further comprises a power supply control mechanism, which comprises a reset button r having a latching position and an unlatching position, an unlatching rod 3, an unlatching device 4, a control module electrically connected to the unlatching device 4 through a connecting circuit, and a switch contact system a connected in series in the connecting circuit; the reset button r is used to be latched with the unlatching rod 3 in the latching position, to move to the unlatching position after being unlatched with the unlatching rod 3, and to drive the unlatching device 4 to reset through the unlatching rod 3 and to restore the latching with the unlatching rod 3 when moving from the unlatching position to the latching position, that is, the reset button r is unlatched with the unlatching rod 3 in the latching position, moves to the unlatching position after being unlatched with the unlatching rod 3, and drives the unlatching device 4 to reset through the unlatching rod 3 and restores the latching with the unlatching rod 3 when moving from the unlatching position to the latching position; the control module is used to take power from a main circuit of the switch device and to control the unlatching device 4 to act according to a signal, the unlatching rod 3 is driven to move by the unlatching device 4, and is used to drive an operating mechanism (that is, the operating mechanism of the breaking unit b in the foregoing) of the switch device to unlatch and to unlatch the reset button r with the unlatching rod 3; the switch contact system a is turned on or turned off when the reset button r is in the latching position or the unlatching position, that is, the switch contact system a is turned on (that is, the switch contact system a is in an on state) when the reset button r is in the latching position, so as to turn on a connecting circuit for connecting the control module and the unlatching device 4, and the switch contact system a is turned off (that is, the switch contact system a is in an off state) when the reset button r is in the unlatching position, so as to turn off the connecting circuit for connecting the control module and the unlatching device 4.

[0057] In the switch device of the embodiment, the switch contact system a is linked with the reset button r, so that the switch contact system a is closed and turned on when the reset button r is in the latching position, the control module drives the unlatching device 4 to act after receiving a signal, the unlatching device 4 drives the operating mechanism of the switch device to unlatch through the unlatching rod 3, the switch device of the embodiment is tripped, the main circuit is turned off, and the electromagnetic coil of the thyristor and the unlatching device 4 will not be damaged due to passing through a large current (greater than the holding current of the thyristor) for a long time in the case of an electric leakage fault, and the power supply circuit (that is, the actuating circuit is turned off) of the thyristor and the unlatching device 4 can be turned off by the switch contact system a regardless of whether the switch device is connected in forward direction or reverse direction, so as to also ensure that the electromagnetic coil of the thyristor and the unlatching device 4 will not be damaged due to passing through a large current for a long time in the case of an electric leakage fault.

[0058] As Figures 2-4As shown, the switch contact system a comprises a switch movable contact mechanism 1 and a switch static contact mechanism 2 linked with the reset button r, the switch static contact mechanism 2 comprises a switch static contact 2-1, the switch movable contact mechanism 1 comprises a switch movable contact 1-1, the switch movable contact mechanism 1 is closed and disconnected with the switch static contact 2-1 through the switch movable contact 1-1; during the process that the reset button r moves to the latching position, i.e. during the process that the reset button r moves from the tripping position to the latching position, the switch movable contact mechanism 1 is driven to move so as to close the switch movable contact 1-1 and the switch static contact 2-1; the reset button r moves to the tripping position, the switch movable contact mechanism 1 is driven to move so as to disconnect the switch movable contact 1-1 and the switch static contact 2-1; the switch movable contact 1-1 and the switch static contact 2-1 are rigid structures.

[0059] The switch movable contact 1-1 and the switch static contact 2-1 are arranged in the above manner and are rigid structures, which can make the switch movable contact 1-1 and the switch static contact 2-1 be made of thicker metal materials, thereby increasing the current carrying capacity and arc resistance of the switch contact system a, and also facilitating to improve the breaking capacity of the switch contact system a.

[0060] Further, the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive when or before the reset button r moves to the latching position, i.e. the moment that the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive is the same as the moment that the reset button r moves to the latching position, or the moment that the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive is before the moment that the reset button r moves to the latching position. Further, the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive before the reset button r moves to the latching position, thereby ensuring that the switch movable contact 1-1 and the switch static contact 2-1 are reliably closed when the reset button r resets the tripping device 4 through the tripping lever 3. Further, the reset button r is in the middle position of the button when the switch movable contact 1-1 and the switch static contact 2-1 are initially in contact, during the process that the reset button r continues to move to the latching position, i.e. during the process that the reset button r moves from the middle position of the button to the latching position, the switch movable contact mechanism 1 and / or the switch static contact 2-1 are driven to move by the reset button r and the switch movable contact 1-1 and the switch static contact 2-1 remain in the conductive state, i.e. during the process that the reset button r moves from the middle position of the button to the latching position, the switch movable contact mechanism 1 and the switch static contact 2-1 remain in the contact and conductive state, one of the switch movable contact mechanism 1 and the switch static contact 2-1 is driven to move by the reset button r and the other remains stationary, or both of the switch movable contact mechanism 1 and the switch static contact 2-1 are driven to move by the reset button r, thereby ensuring that the switch contact system a is reliably closed and the reset button r can move to the latching position to restore the latching cooperation with the tripping lever 3 and reset the tripping device 4.

[0061] As shown in Figures 2-4 , in the power supply control mechanism of the embodiment, when the reset button r moves from the button middle position to the latching position, the switch moving contact mechanism 1 and the switch static contact 2-1 are both driven by the reset button r.

[0062] Further, as shown in Figures 2-4 , the switch static contact 2-1 has two working positions, which are the first position and the second position respectively; the switch static contact mechanism 2 further comprises a switch static contact spring 2-2, which acts on the switch static contact 2-1 to keep it in the first position; when the reset button r moves from the tripped position to the button middle position, the switch moving contact 1-1 and the switch static contact 2-1 are initially in contact, and at the same time, the switch static contact 2-1 remains in the first position; then, when the reset button r moves from the button middle position to the latching position, the switch static contact 2-1 is driven to move by the switch moving contact mechanism 1 and the switch static contact spring 2-2 is energized, that is, when the reset button r moves from the button middle position to the latching position, the reset button r drives the switch moving contact mechanism 1 to move, and at the same time, the switch moving contact mechanism 1 drives the switch static contact 2-1 to move, at this time, the switch static contact 2-1 is in the second position, and at the same time, the switch static contact 2-1 energizes the switch static contact spring 2-2; when the reset button r moves from the latching position to the tripped position, the switch static contact spring 2-2 is de-energized to drive the switch static contact 2-1 to reset to the initial position of the static contact, that is, the switch static contact spring 2-2 is de-energized to drive the switch static contact 2-1 to move from the second position to the first position.

[0063] Further, the switch static contact 2-1 is integrally movably arranged or rotationally arranged. Further, in the embodiment, as shown in Figures 2-4 , the switch static contact 2-1 is preferably integrally movably arranged. Further, the switch static contact spring 2-2 is a compression spring, one end of which is fixedly arranged (for example, fixedly arranged on the mechanism shell) and the other end of which cooperates with the switch static contact 2-1.

[0064] Specifically, as shown in Figures 3-4 , 6-7, 9, 15, one implementation of the switch static contact 2-1 integrally movably arranged is as follows:

[0065] The mechanism shell comprises a static contact mounting structure h1-4 arranged on the first bottom wall thereof, the static contact mounting structure h1-4 comprising a static contact spring stop h1-41, a static contact guide wall h1-42 and a static contact limit stop h1-43, two groups of static contact guide walls h1-42 are oppositely arranged, the switch static contact 2-1 is slidingly arranged between the two groups of static contact guide walls h1-42, that is, the two groups of static contact guide walls h1-42 enclose a static contact sliding groove with two open ends, the switch static contact 2-1 is slidingly arranged in the static contact sliding groove, the switch static contact 2-1 is guided and limited by the two groups of static contact guide walls h1-42 respectively, so that the switch static contact 2-1 can only move along the extension direction of the static contact sliding groove, the static contact spring stop h1-41 is oppositely arranged with the static contact limit stop h1-43, and the two are oppositely arranged at two ends of the static contact sliding groove respectively, one end of the switch static contact spring 2-2 is matched with the static contact spring stop h1-41 and the other end is matched with the static contact 2-1, the switch static contact spring 2-2 limits the switch static contact 2-1 and the static contact limit stop h1-43, and the switch static contact 2-1 is kept at the first position. Further, the first half shell h1 comprises a first bottom wall, that is, the static contact mounting structure h1-4 is arranged on the first half shell h1.

[0066] As other embodiments of the static contact mounting structure h1-4, the static contact limit stop h1-43 is not arranged on the first bottom wall, at least one end of the static contact guide wall h1-42 away from the static contact spring stop h1-41 is provided with the static contact limit stop h1-43, one end of the static contact limit stop h1-43 is connected with the corresponding static contact guide wall h1-42 and the other end protrudes to the middle part of the two groups of static contact guide walls h1-42.

[0067] Further, the switch static contact 2-1 comprises a static contact contact plate 2-11, a static contact middle plate 2-12, and a static contact support leg 2-13, the static contact contact plate 2-11 is used to close and open with the switch dynamic contact 1-1, among a pair of side edges of the static contact middle plate 2-12, one side edge is connected with one end of the static contact contact plate 2-11 by bending, and the other side edge is connected with one end of the static contact support leg 2-13 by bending, the static contact middle plate 2-12 is arranged opposite to the first bottom wall, the static contact contact plate 2-11 and the static contact support leg 2-13 are bent to the same side of the static contact contact plate 2-11, the other end of the static contact contact plate 2-11 and the other end of the static contact support leg 2-13 are respectively slidably matched with the first bottom wall, and the static contact contact plate 2-11 and the static contact middle plate 2-12 are both slidably arranged between the two groups of static contact guide walls h1-42; one end of the switch static contact spring 2-2 is matched with the static contact spring stop h1-41, and the other end is matched with the static contact support leg 2-13, the switch static contact spring 2-2 makes the free end of the static contact contact plate 2-11 (i.e. the end of the static contact contact plate 2-11 slidably matched with the first bottom wall) abut against the static contact limiting stop h1-43 for limiting cooperation. Further, the switch static contact 2-1 further comprises a static contact wiring plate 2-14, the static contact wiring plate 2-14 is coplanar with the static contact middle plate 2-12, and the two are integrally formed in an L-shaped structure, the static contact wiring plate 2-14 is used to connect the wires to connect the switch static contact 2-1 into the corresponding circuit. Further, the static contact wiring plate 2-14 is provided with a static contact wiring hole 2-15, in use, the wires are inserted into the static contact wiring hole 2-15 and then welded, so as to improve the reliability of the connection between the static contact wiring plate 2-14 and the wires and the convenience of the welding of the two.

[0068] Further, each of the static contact guiding walls h1-42 comprises a static contact guiding plate h1-421, and at least one of the static contact guiding walls h1-42 further comprises a static contact clamping block h1-422, which is connected to the corresponding static contact guiding plate h1-421 at one end and protrudes towards the middle of the two static contact guiding walls h1-42 at the other end, and which is in sliding and limiting cooperation with the static contact middle plate 2-12 to prevent the switch static contact 2-1 from moving away from the first bottom wall and thus from escaping from between the two static contact guiding walls h1-42 during the sliding process; the static contact spring stop h1-41 comprises a static contact spring stop plate h1-411 and a static contact spring stop block h1-412, the static contact spring stop plate h1-411 is connected to the first bottom wall at one end and is provided with the static contact spring stop block h1-412 at the other end, and the static contact spring stop block h1-412 is arranged opposite to the first bottom wall, and one end of the switch static contact spring 2-2 abuts against the static contact spring stop plate h1-411 and is located between the static contact spring stop block h1-412 and the first bottom wall. Further, the two static contact guiding walls h1-42 are each provided with a static contact clamping block h1-422. Further, the static contact guiding plate h1-421 of one of the static contact guiding walls h1-42 is further provided with a stepped structure, which comprises a stepped horizontal surface and a stepped vertical surface, the stepped horizontal surface is arranged opposite to the first bottom wall, the static contact wiring plate 2-14 is arranged on the stepped horizontal surface, and one side edge of the static contact wiring plate 2-14 is abutted against the stepped vertical surface by the switch static contact spring 2-2.

[0069] As another embodiment of the static contact mounting structure h1-4, the static contact guiding wall h1-42 is not provided with the static contact clamping block h1-422, and the static contact guiding plate h1-421 is provided with a static contact guiding groove, and a pair of side edges of the static contact middle plate 2-12 are respectively arranged in sliding cooperation in the static contact guiding grooves of the two static contact guiding plates h1-421.

[0070] As another embodiment of the switch static contact 2-1, the switch static contact 2-1 is arranged in rotation; during the movement of the reset button r from the button middle position to the buckle position, the reset button r drives the switch moving contact 1-1 to move, and simultaneously the switch moving contact 1-1 drives the switch static contact 2-1 to rotate. Further, the switch static contact spring 2-2 is a torsion spring, a tension spring or a compression spring.

[0071] The switch moving contact 1-1 is arranged in rotation or in overall movement.

[0072] Further, in this embodiment, as Figures 2-4As shown, the switch movable contact 1-1 is preferably arranged to rotate. Further, the switch contact system a further comprises a first reset member 7 acting on the switch movable contact 1-1 to have a tendency to rotate to be disconnected from the switch stationary contact 2-1. The reset button r is moved from the tripped position to the button intermediate position to rotate the switch movable contact 1-1 to initially contact the switch stationary contact 2-1, and the reset button r is moved from the button intermediate position to the latched position to drive the switch movable contact mechanism 1 to rotate, which simultaneously drives the switch stationary contact 2-1 to move; in the process of moving the reset button r to the tripped position, the switch stationary contact spring 2-2 is released to drive the switch stationary contact 2-1 to reset to the stationary contact initial position.

[0073] Specifically, as shown in Figures 2-4 , 12, 14, it is an implementation mode of the switch movable contact mechanism 1 arranged to rotate and the switch movable contact mechanism 1 linked with the reset button r:

[0074] The switch movable contact 1-1 comprises a movable contact contact portion 1-11 and a movable contact driven portion 1-12, one end of the movable contact contact portion 1-11 is connected to one end of the movable contact driven portion 1-12 by bending, the other end of the movable contact contact portion 1-11 is provided with a movable contact point 1-15 for cooperating with the switch stationary contact 2-1, and the other end of the movable contact driven portion 1-12 (i.e. the free end of the movable contact driven portion 1-12 and the end of the movable contact driven portion 1-12 away from the movable contact contact portion 1-11) is in transmission cooperation with the reset button r. Further, when the reset button r is moved from the tripped position to the latched position, the reset button r (specifically, the button driving portion r4 of the reset button r) presses the free end of the movable contact driven portion 1-12 to rotate the switch movable contact 1-1 to be closed with the switch stationary contact 2-1, and at the same time the switch movable contact 1-1 stores energy for the first reset member 7; when the reset button r is moved from the latched position to the tripped position, the movable contact driven portion 1-12 is avoided, the first reset member 7 is released to drive the switch movable contact 1-1 to rotate to be disconnected from the switch stationary contact 2-1. Further, the movable contact contact portion 1-11 and the movable contact driven portion 1-12 are integrally formed in an L-shaped structure.

[0075] Further, the bending connection part of the movable contact contact part 1-11 and the movable contact driven part 1-12 is provided with a movable contact shaft hole 1-16, and the switch movable contact 1-1 is rotatably arranged through the movable contact shaft hole 1-16. Further, the first half shell h1 of the mechanism shell comprises a movable contact mounting shaft h1-6 arranged on the first bottom wall, and the switch movable contact 1-1 is rotatably arranged on the movable contact mounting shaft h1-6 through the movable contact shaft hole 1-16. Further, the second half shell h2 of the mechanism shell further comprises a movable contact limiting column h2-6, one end of the movable contact mounting shaft h1-6 is connected with the first bottom wall, and the movable contact limiting column h2-6 abuts on the other end of the movable contact mounting shaft h1-6, and the outer diameter of the movable contact limiting column h2-6 is greater than the inner diameter of the movable contact shaft hole 1-16, so as to reliably limit the switch movable contact 1-1 on the movable contact mounting shaft h1-6.

[0076] Further, the switch movable contact 1-1 further comprises a movable contact wiring part 1-14, the movable contact wiring part 1-14 is used for connecting the wire to connect the switch movable contact 1-1 into the corresponding circuit, and the movable contact wiring part 1-14 is arranged on the bending connection part of the movable contact contact part 1-11 and the movable contact driven part 1-12. Further, the movable contact wiring part 1-14, the movable contact contact part 1-11 and the movable contact driven part 1-12 integrally form a Y-shaped structure, the movable contact wiring part 1-14 is provided with a movable contact wiring hole 1-18 for connecting the wire, for example, the wire can be inserted into the movable contact wiring hole 1-18 and welded, so as to improve the connection reliability of the movable contact wiring part 1-14 and the wire. Further, in the rotation shaft direction of the switch movable contact 1-1, the thickness of the movable contact wiring part 1-14 is less than or equal to the thickness of the movable contact contact part 1-11.

[0077] Further, the first reset member 7 is a tension spring; the switch movable contact 1-1 further comprises a movable contact connecting part 1-13, the movable contact connecting part 1-13 is arranged on the movable contact contact part 1-11, one end of the first reset member 7 is connected with the movable contact connecting part 1-13 and the other end is fixedly arranged (for example, hung on the movable contact spring column h1-5 arranged on the first bottom wall). Further, in the rotation shaft direction of the switch movable contact 1-1, the thickness of the movable contact connecting part 1-13 is less than the thickness of the movable contact contact part 1-11, the movable contact connecting part 1-13 is provided with a movable contact spring hanging hole 1-17, and one end of the first reset member 7 is hung in the movable contact spring hanging hole 1-17. Further, in the rotation shaft direction of the switch movable contact 1-1, the movable contact connecting part 1-13 is located at the central position of the movable contact contact part 1-11; the movable contact connecting part 1-13 and the movable contact 1-15 are respectively located on both sides of the movable contact contact part 1-11.

[0078] As other embodiments of the first reset member 7, the first reset member 7 is a torsion spring, which is sleeved on the movable contact mounting shaft h1-6, one spring arm is matched with the switch movable contact 1-1 and the other spring arm is fixed on the mechanism shell; or, the first reset member 7 is a compression spring, one end of which is matched with the switch movable contact 1-1 and the other end is matched with the mechanism shell.

[0079] As other embodiments of the linkage between the switch movable contact 1-1 and the reset button r, the reset button r is connected in transmission with the switch movable contact 1-1 through the transmission rod 6, specifically, one end of the transmission rod 6 is rotationally connected with the reset button r and the other end is rotationally connected with the free end of the movable contact driven part 1-12.

[0080] As shown in Figures 3-5 , 12-13, the reset button r includes a button head r1 and a button driving part r4, one end of the button driving part r4 is connected with the button head r1 and the other end (i.e. the free end of the button driving part r4 and the end of the button driving part r4 away from the button head r1) is matched in transmission with the switch movable contact 1-1.

[0081] Specifically, the button driving part r4 extends along the moving direction of the reset button r1, and the free end of the button driving part r4 is matched in transmission with the movable contact driven part 1-12 of the switch movable contact 1-1.

[0082] Further, the reset button r further includes a button limiting part r2 and a button locking part r3, the button limiting part r1 is matched in limiting with the mechanism shell to prevent the reset button r from coming out of the mechanism shell, one end (button locking end r31) of the button locking part r3 is used for snap fitting with the tripping lever 3 and the other end is connected with the button driving part r4 by bending. Further, the extension direction of the button locking part r3 is perpendicular to the moving direction of the reset button r, and the button locking part r3 is connected perpendicularly with the button driving part r4. Further, the button head r1, the button limiting part r2, the button locking part r3 and the button driving part r4 are connected in sequence.

[0083] As shown in Figures 3-8 , 10, 12-13, it is one assembly mode of the reset button r and the mechanism shell:

[0084] The button head r1 comprises a button avoiding slot r11, a button first side wall r12, a button bottom wall r14 and a button second side wall r13 which are sequentially arranged around the button avoiding slot r11; the button first side wall r12 is connected with the button limiting part r2; the mechanism shell further comprises a button limiting plate h1-2 which is arranged in the inner end of the button mounting hole h1-1, one end of the button limiting plate h1-2 is connected with the side wall of the button mounting hole h1-1 and the other end is inserted into the button avoiding slot r11, and the button limiting plate h1-2 is opposite to the button bottom wall r14; the button spring is a compression spring which is arranged in the button avoiding slot r11 and cooperates with the button limiting plate h1-2 and the button bottom wall r14 at two ends respectively; a pair of side edges of the button limiting plate h1-2 and a pair of side walls of the button mounting hole r1-1 are each provided with a button head guide slot h1-11, and the button first side wall r12 and the button second side wall r13 are slidably arranged in the two button head guide slots h1-11 respectively; the button limiting part r2 and the button limiting plate h1-2 limit the reset button r in the tripping position, and the button limiting part r2 and the button spring / button bottom wall r14 are respectively located on the two sides of the button limiting plate h1-2 in the moving direction of the reset button r.

[0085] Further, the first half shell h1 of the mechanism shell comprises a driving part guide slot h1-3, and the second half shell h2 comprises a driving part guide rib h2-3, the driving part guide rib h2-3 is inserted into the driving part guide slot h1-3 to form a shell guide hole h3 for the button driving part r4 to pass through, so as to limit the button driving part r4 and avoid excessive swing of the button driving part r4 and the reset button r itself structure in the working process. Further, as shown in Figures 10-11 Further, the first half shell h1 of the mechanism shell comprises a driving part guide slot h1-3, and the second half shell h2 comprises a driving part guide rib h2-3, the driving part guide rib h2-3 is inserted into the driving part guide slot h1-3 to form a shell guide hole h3 for the button driving part r4 to pass through, so as to limit the button driving part r4 and avoid excessive swing of the button driving part r4 and the reset button r itself structure in the working process. Further, as shown in

[0086] It should be noted that, in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship in use, and are only for the convenience of description, and cannot be understood as indicating that the devices or elements referred to must have a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0087] The above is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them shall be deemed as belonging to the protection scope of the utility model.

Claims

1. A power supply control mechanism, comprising a reset button (r) having a tripping position and a latching position, a tripping rod (3), a tripping device (4), a control module electrically connected to the tripping device (4) through a connecting circuit, and a switch contact system (a) connected in series in the connecting circuit; the reset button (r) is used to latch with the tripping rod (3) in the latching position, move to the tripping position after releasing the latching engagement with the tripping rod (3), and drive the tripping device (4) to reset and restore the latching engagement of the tripping rod (3) when moving from the tripping position to the latching position; the control module is used to draw power from the main circuit of the switch electrical appliance and control the tripping device (4) to operate according to a signal; the tripping rod (3) is driven by the tripping device (4) to move, and is used to drive the operating mechanism of the switch electrical appliance to trip and release the latching engagement of the tripping rod (3) and the reset button (r); when the reset button (r) is in the latching position or the tripping position, the switch contact system (a) is turned on or off; Its characteristics are: The switch contact system (a) comprises a switch moving contact mechanism (1) linked to a reset button (r) and a switch static contact (2-1) having a first position and a second position; when the reset button (r) moves to the latched position, the switch moving contact mechanism (1) is first driven to move to an initial contact with the switch static contact (2-1) in the first position, and then the switch static contact (2-1) is driven to move to the second position by the switch moving contact mechanism (1); when the reset button (r) moves to the tripped position, the switch static contact (2-1) is reset to the first position.

2. The power supply control mechanism according to claim 1, characterized in that: The switch contact system (a) further comprises a switch static contact spring (2-2); when the reset button (r) moves to the tripping position, the switch static contact spring (2-2) drives the switch static contact (2-1) to reset to the first position.

3. The power supply control mechanism according to claim 2, characterized in that: The switch static contact (2-1) is arranged to move as a whole.

4. The power supply control mechanism according to claim 3, characterized in that: The power supply control mechanism further comprises a mechanism housing, the mechanism housing comprising a static contact mounting structure (h1-4) arranged on a first bottom wall thereof, the static contact mounting structure (h1-4) comprising a static contact spring stop (h1-41), a static contact guide wall (h1-42) and a static contact limit stop (h1-43), two sets of static contact guide walls (h1-42) being arranged opposite to each other, and the switch static contact (2-1) being slidably arranged on the two sets of static contact guide walls (h1-42) The switch static contact spring (2-2) is a compression spring, one end of which is matched with the static contact spring stop (h1-41) and the other end of which is matched with the static contact (2-1). The switch static contact spring (2-2) enables the switch static contact (2-1) to be matched with the static contact limit stop (h1-43) in a limited manner.

5. The power supply control mechanism according to claim 4, characterized in that: The switch static contact (2-1) comprises a static contact plate (2-11), a static contact intermediate plate (2-12), and a static contact support leg (2-13); the static contact plate (2-11) is used to close and open with the switch moving contact (1-1); one side of a pair of side edges of the static contact intermediate plate (2-12) is bent and connected to the static contact plate (2-11), and the other side is connected to one end of the static contact support leg (2-13). The static contact plate (2-11) and the static contact support leg (2-13) are bent and connected, and the static contact plate (2-11) and the static contact support leg (2-13) are bent toward the same side of the static contact plate (2-11). The other end of the static contact plate (2-11) and the other end of the static contact support leg (2-13) are respectively slidably matched with the first bottom wall of the mechanism shell, and the static contact plate (2-11) and the static contact middle plate (2-12) are respectively guided and limited with two groups of static contact guide walls (h1-42).

6. The power supply control mechanism according to claim 5, characterized in that: Each group of the static contact guide walls (h1-42) includes a static contact guide plate (h1-421), and at least one group of the static contact guide walls (h1-42) also includes a static contact clamping block (h1-422). One end of the static contact clamping block (h1-422) is connected to the corresponding static contact guide plate (h1-421) and the other end protrudes toward the middle of the two groups of static contact guide walls (h1-42). The static contact clamping block (h1-422) is in sliding and limiting engagement with the static contact intermediate plate (2-12), thereby preventing the switch static contact (2-1) from moving in a direction away from the first side wall when sliding.

7. The power supply control mechanism according to claim 1, characterized in that: The switch moving contact mechanism (1) comprises a rotatably arranged switch moving contact (1-1), the switch moving contact (1-1) comprising a moving contact contact portion (1-11) and a moving contact actuated portion (1-12), one end of the moving contact contact portion (1-11) being bent and connected to the moving contact actuated portion (1-12), and the other end being provided with a moving contact point (1-15) for cooperating with a switch static contact (2-1), and the other end of the moving contact actuated portion (1-12) being transmission-cooperated with a reset button (r); When the reset button (r) moves to the latch position, it presses the movable contact receiving portion (1-12) to rotate the switch movable contact (1-1) and close with the switch static contact (2-1).

8. The power supply control mechanism according to claim 7, characterized in that: The switch contact system (a) further comprises a first reset member (7); when the reset button (r) moves to the tripping position, the movable contact receiving portion (1-12) is avoided, and the first reset member (7) drives the switch movable contact (1-1) to rotate and disconnect from the switch static contact (2-1).

9. The power supply control mechanism according to claim 8, characterized in that: The switch moving contact (1-1) further comprises a moving contact connecting portion (1-13), the moving contact connecting portion (1-13) being arranged on the moving contact contact portion (1-11), the moving contact connecting portion (1-13) and the moving contact point (1-15) being respectively located on both sides of the moving contact contact portion (1-11); the first reset member (7) is a tension spring, one end of which is fixedly arranged and the other end of which is connected to the moving contact connecting portion (1-13).

10. The power supply control mechanism according to claim 7, characterized in that: The switch moving contact (1-1) further comprises a moving contact wiring portion (1-14), which is arranged at a bent connection between the moving contact contact portion (1-11) and the moving contact receiving portion (1-12) and is used for connecting a wire to connect the switch moving contact (1-1) to a corresponding circuit.

11. The power supply control mechanism according to claim 7, characterized in that: The switch moving contact (1-1) further comprises a moving contact shaft hole (1-16) provided at a bent connection between the moving contact contact portion (1-11) and the moving contact driven portion (1-12); the switch moving contact (1-1) is rotatably provided on a moving contact mounting shaft (h1-6) of a mechanism housing via the moving contact shaft hole (1-16).

12. The power supply control mechanism according to claim 7, characterized in that: The reset button (r) is arranged to move as a whole; the power supply control mechanism also includes a mechanism shell, which includes a button mounting hole (h1-2); the reset button (r) is arranged to move as a whole, and includes a button head (r1), a button limiting portion (r2), a button locking portion (r3) and a button driving portion (r4); the button head (r1) is slidably arranged in the button mounting hole (h1-2) and one end protrudes outside the mechanism shell for external force operation; the button limiting portion (r2) is limitedly matched with the mechanism shell to prevent the reset button (r) from falling out of the mechanism shell; one end of the button locking portion (r3) is used to snap-fit ​​with the tripping rod (3) and the other end is bent and connected to one end of the button driving portion (r4); one end of the button driving portion (r4) is used to transmit and cooperate with the moving contact driven portion (1-12); the extension direction of the button driving portion (r4) is the same as the moving direction of the reset button (r).

Images