Power supply control mechanism and switching apparatus

Abstract

The present invention relates to the field of low-voltage electrical apparatuses, and in particular to a power supply control mechanism and a switching apparatus comprising the power supply control mechanism. In the power supply control mechanism, a reset button has a trip position and a latched position, and is in latch-fit with a trip bar and in transmission-fit with a trip unit, a control module is electrically connected to the trip unit by means of a connection circuit, and a switch contact system is connected in series in the connection circuit; when the reset button is in the latched position or the trip position, the switch contact system is turned on or off; a first contact mechanism of the switch contact system comprises a first contact; during the movement of the reset button to the latched position / trip position, the first contact mechanism moves to close / open the first contact and a second contact; and the first contact and the second contact are of a rigid structure. In the power supply control mechanism and the switching apparatus of the present invention, the switch contact system has good current-carrying capacity and arc resistance capability.

Description

Power supply control mechanism and switching apparatus

[0001] The present application claims priority to Chinese Patent Application No. 202411227217.6, filed on September 3, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of low-voltage electrical apparatus, in particular to a power supply control mechanism and a switching apparatus comprising the same. BACKGROUND

[0003] As shown in FIG. 30, the existing circuit breaker with residual current protection function, after the power supply output from the outgoing terminal of the main circuit passes through the rectifier circuit (VD2-5 in the figure), the AC signal becomes a DC signal, and after the DC signal is divided by the voltage dividing circuit (resistor R5-6 in the figure), an electrical signal is provided for the leakage processing chip (IC in the figure) of the control module, and the DC signal directly forms a loop (action loop) with the electromagnetic coil (KA in the figure) of the release and the thyristor (VT2 in the figure) of the control module; in the normal state, the thyristor is off, and the action loop is not conductive; when the main circuit has a leakage fault, the leakage processing chip detects the fault signal and triggers the thyristor to conduct, then the action loop is conductive, and the electromagnetic coil of the release is energized, so that the release operates, thereby driving the operating mechanism of the switching apparatus to trip. If the circuit breaker is correctly wired (i.e. positive wiring - the incoming terminal is connected to the power supply side conductor and the outgoing terminal is connected to the load side conductor), the power supply point of the control module is the outgoing terminal of the circuit breaker, and after the main circuit of the circuit breaker is disconnected, the power supply 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 terminal is connected to the load side conductor and the outgoing terminal is connected to the power supply side conductor), the power supply point becomes the incoming terminal, and after the leakage protection main loop is disconnected when a leakage signal appears, the residual current protection power supply signal of the product still exists, the thyristor continuously conducts and is greater than the holding current of the thyristor, and under the continuous working of the high current signal, the thyristor will explode or the electromagnetic coil of the release will burn out.

[0004] The existing circuit breaker with residual current protection function solves the above problems by adding a break point between the control module and the electromagnetic coil of the release, so that the main circuit of the circuit breaker is disconnected and the thyristor is disconnected, and the electromagnetic coil of the release stops working; but the break point is usually realized by a flexible metal sheet, which has poor current carrying capacity and poor arc resistance. SUMMARY

[0005] The present application aims to overcome at least one of the defects of the prior art, and to provide a power supply control mechanism and a switching apparatus comprising the same, which has good current carrying capacity and arc resistance of the switching contact system.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] A power supply control mechanism, comprising a reset button having a latching position and a tripping position, a tripping lever, a tripping device, a control module electrically connected with the tripping 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 tripping lever in the latching position, move to the tripping position after unlatching with the tripping lever, and drive the tripping device to reset and restore latching with the tripping lever when moving from the tripping position to the latching position; the control module is used to take power from a main circuit of a switch and control the tripping device to act according to a signal, and the tripping lever is driven by the tripping device to move, drive an operating mechanism of the switch to trip, and unlatch the tripping lever from the reset button; the switch contact system is turned on or turned off when the reset button is in the latching position or the tripping position.

[0008] The switch contact system comprises a first contact mechanism and a second contact mechanism linked with the reset button, the first contact mechanism comprises a first contact, and the second contact mechanism comprises a second contact; the first contact mechanism moves to make the first contact close to the second contact during the movement of the reset button to the latching position; the first contact mechanism moves to make the first contact open from the second contact during the movement of the reset button to the tripping position; the first contact and the second contact are rigid structures.

[0009] Further, the first contact and the second contact are in contact and turned on when or before the reset button moves to the latching position.

[0010] Further, the first contact and the second contact are in contact and turned on before the reset button moves to the latching position; the position of the reset button when the first contact and the second contact are initially in contact is a button intermediate position, and the first contact mechanism and / or the second contact move under the drive of the reset button and the first contact and the second contact remain in the contact and turned on state during the continuous movement of the reset button to the latching position.

[0011] Further, the second contact mechanism further comprises a second contact spring, the second contact spring acts on the second contact to keep it in a first position; the reset button moves from the tripping position to the button intermediate position to make the first contact and the second contact initially in contact, and the reset button continuously moves to the latching position, the second contact is driven to move by the first contact mechanism and the second contact spring stores energy; the second contact spring releases energy to drive the second contact to reset to the first position during the movement of the reset button to the tripping position.

[0012] The second contact is integrally movably arranged or rotationally arranged.

[0013] Further, the second contact is integrally movable, and the second contact spring is a compression spring, one end of which is fixedly arranged and the other end of which is matched with the second contact.

[0014] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprising a second contact mounting structure arranged on a first bottom wall of the mechanism shell, the second contact mounting structure comprising a second contact spring stop, a second contact guide wall and a second contact limiting stop, two groups of the second contact guide walls are oppositely arranged, the second contact is slidably arranged between the two groups of the second contact guide walls and is guided and limitedly matched with the two groups of the second contact guide walls respectively, the second contact spring stop is oppositely arranged with the second contact limiting stop, one end of the second contact spring is matched with the second contact spring stop and the other end of the second contact spring is matched with the second contact, and the second contact spring makes the second contact limitedly matched with the second contact limiting stop.

[0015] The second contact comprises a second contact contact plate, a second contact intermediate plate and a second contact support leg, the second contact contact plate is used for closing and opening with the first contact, one side of the second contact intermediate plate is connected with the second contact contact plate by being bent and the other side of the second contact intermediate plate is connected with one end of the second contact support leg by being bent, the second contact contact plate and the second contact support leg are bent to the same side of the second contact contact plate, the other end of the second contact contact plate and the other end of the second contact support leg are slidably matched with the first bottom wall of the mechanism shell respectively, and the second contact contact plate and the second contact intermediate plate are guided and limitedly matched with the two groups of the second contact guide walls respectively.

[0016] Further, the first contact is rotatably arranged, and the first contact comprises a first contact contact part and a first contact driven part, one end of the first contact contact part is connected with one end of the first contact driven part by being bent, the other end of the first contact contact part 1-11 is provided with a first contact point used for matching with the second contact, and the other end of the first contact driven part is transmissionally matched with the reset button.

[0017] The bent connection position of the first contact contact part and the first contact driven part is provided with a first contact shaft hole, and the first contact is rotatably arranged through the first contact shaft hole.

[0018] The switch contact system further comprises a first reset member, the first reset member is used for the first contact to have a movement tendency of rotating and being disconnected with the second contact; in the process that the reset button moves to the latching position, the first contact is driven to rotate and be connected with the second contact, and the first contact makes the first reset member store energy; in the process that the reset button moves to the tripping position, the first reset member releases energy and is used for driving the first contact to rotate and be disconnected with the second contact.

[0019] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprising a button mounting hole; the reset button is integrally movably arranged, comprising a button head, a button limiting portion, a button lock portion and a button driving portion, the button head being slidably arranged in the button mounting hole and protruding outside the mechanism shell at one end for external force operation, the button limiting portion being limitingly matched with the mechanism shell to prevent the reset button from being pulled out of the mechanism shell, one end of the button lock portion being used for snap fitting with the trip lever and the other end being connected with one end of the button driving portion, the other end of the button driving portion being used for transmission matching with the first contact movable portion, the extension direction of the button driving portion being the same as the moving direction of the reset button;

[0020] The mechanism shell comprises a first half shell and a second half shell which are relatively combined together; the first half shell comprises a driving portion guide groove, and the second half shell comprises a driving portion guide rib, the driving portion guide rib being inserted into the driving portion guide groove to form a shell guide hole for the button driving portion to pass through;

[0021] The first half shell further comprises a first contact mounting shaft, one end of the first contact mounting shaft being connected with the first half shell, and the first contact being rotatably mounted on the first contact mounting shaft through a first contact shaft hole of the first contact; the second half shell further comprises a first contact limiting column, the first contact limiting column abutting against the other end of the first contact mounting shaft, and the outer diameter of the first contact limiting column being greater than the inner diameter of the first contact shaft hole;

[0022] The first half shell further comprises a first trip lever shaft hole, and the second half shell further comprises a second trip lever shaft column, the second trip lever shaft column being provided with a second trip lever shaft hole, and the rotating shaft of the trip lever being rotatably inserted into the first trip lever shaft hole and the second trip lever shaft hole at both ends thereof;

[0023] The second trip lever shaft column, the first contact limiting column and the driving portion guide rib are connected with each other through reinforcing ribs respectively.

[0024] Further, the second contact is fixedly arranged; the first contact mechanism comprises a first contact, a contact support and a first contact spring, the first contact mechanism being rotatably arranged through the contact support, the first contact being movably arranged on the contact support, and the first contact spring being matched with the first contact and the contact support respectively, so that the first contact and the contact support are limitingly matched to remain relatively stationary; in the process that the reset button moves from the tripped position to the button intermediate position, the contact support is driven to rotate to drive the first contact and the second contact to initially contact, in the process that the reset button moves from the button intermediate position to the snap position, the contact support is driven to move relative to the first contact and the first contact spring is energized, and in the process that the reset button moves from the button intermediate position to the tripped position, the first contact spring is de-energized to drive the first contact and the contact support to move relative to each other to restore the limiting matching.

[0025] Further, the first contact is rotatably arranged on the contact support; and the first contact is electrically connected to the contact support by the first contact spring.

[0026] Further, the first contact spring is a torsion spring, which is sleeved on the rotating shaft of the first contact; and the first contact is electrically connected to the contact support by the first contact spring.

[0027] The contact support comprises support side plates, a support connecting plate and a first contact limiting stopper, two groups of the support side plates are oppositely and spacedly arranged, the support connecting plate is connected to the two groups of the support side plates at two ends respectively, and at least one of the support side plates is provided with the movable contact limiting stopper; one end of the first contact is rotatably arranged between the two groups of the support side plates; and the first contact spring is matched with the first contact and the contact support respectively, so that the first contact is limited by the first contact limiting stopper, and the movable contact of the switch and the contact support are kept relatively stationary.

[0028] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a second contact mounting structure arranged on a first bottom wall thereof, the second contact mounting structure comprises a second contact hook, a first side stopper, a second side stopper and a second contact limiting stopper, the first side stopper and the second side stopper are oppositely arranged, the second contact hook and the second contact limiting stopper are oppositely arranged, the second contact hook comprises a hook arm and a hook portion, one end of the hook arm is connected to the first bottom wall and the other end thereof is connected to the hook portion.

[0029] The second contact comprises a second contact contact plate, a second contact intermediate plate and a second contact wiring plate, the second contact contact plate is used for closing and opening with the movable contact of the switch, one end of the second contact contact plate is connected to one end of the second contact intermediate plate by bending, the other end of the second contact contact plate is limited by the second contact limiting stopper and abuts against the first bottom wall, the other end of the second contact intermediate plate is connected to the second contact wiring plate by bending and the second contact intermediate plate is coplanar with the second contact wiring plate; the second contact contact plate is located between the first side stopper and the second side stopper and is limited by the first side stopper and the second side stopper respectively; the second contact wiring plate is opposite to the first bottom wall and abuts against the second side stopper, the hook arm abuts against the end of the second contact intermediate plate away from the second contact contact plate, and the hook portion is clamped on the side of the second contact intermediate plate away from the first bottom wall.

[0030] Further, the power supply control mechanism further comprises a transmission rod, one end of the transmission rod is rotatably connected to the reset button and the other end thereof is rotatably connected to the contact support.

[0031] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprising a button mounting hole; the reset button is integrally arranged and comprises a button head, a button limiting portion and a button lock portion, the button head being slidably arranged in the button mounting hole and protruding from the mechanism shell at one end for external force operation, the button limiting portion being in limiting cooperation with the mechanism shell to prevent the reset button from being pulled out, the extension direction of the button lock portion being perpendicular to the movement direction of the reset button, one end of the button lock portion being used for snap cooperation with the trip lever and the other end being rotatably connected with the transmission lever;

[0032] The mechanism shell comprises a first half shell and a second half shell which are relatively combined together; the first half shell comprises a driving portion guide groove and the second half shell comprises a driving portion guide rib, the driving portion guide rib being inserted in the driving portion guide groove to form a shell guide hole for the transmission lever to pass through;

[0033] The first half shell further comprises a first contact head mounting shaft, one end of the first contact head mounting shaft being connected with the first half shell, and the first contact head mechanism being rotatably mounted on the first contact head mounting shaft through a first contact head shaft hole; the second half shell further comprises a first contact head limiting column, the first contact head limiting column abutting against the other end of the first contact head mounting shaft, and the outer diameter of the first contact head limiting column being greater than the inner diameter of the first contact head shaft hole;

[0034] The first half shell further comprises a first trip lever shaft hole and the second half shell further comprises a second trip lever shaft column, the second trip lever shaft column being provided with a second trip lever shaft hole, and the rotating shaft of the trip lever being rotatably inserted in the first trip lever shaft hole and the second trip lever shaft hole at both ends thereof;

[0035] The second trip lever shaft column, the first contact head limiting column and the driving portion guide rib are connected with each other through reinforcing ribs.

[0036] A switch electric appliance, comprising the power supply control mechanism.

[0037] The power supply control mechanism, the switch contact head system, no matter the switch electric appliance is connected in series or in reverse, the switch contact head system can disconnect the power supply circuit of the thyristor and the trip device (namely, the action loop is disconnected), so that the electromagnetic coil of the thyristor and the trip device is not damaged due to long time through of large current caused by leakage fault; in addition, the first contact head mechanism and the second contact head are arranged in a certain way and the first contact head and the second contact head are rigid structures, which can increase the current carrying capacity and arc burning resistance of the switch contact head system and improve the breaking capacity of the switch contact head system.

[0038] In addition, the cooperation mode of the button driving portion and the first contact head is simple and the transmission is reliable.

[0039] In addition, the button driving part is limited by the shell guiding hole, so that the button driving part is limited, and the reliable cooperation between the button driving part and the first contact and the excessive swing of the reset button itself structure are avoided.

[0040] The switch electric appliance comprising the power supply control mechanism.

[0041] The switch electric appliance comprising the power supply control mechanism of the present application ensures that the electromagnetic coil of the thyristor and the trip device will not be damaged by long time through large current due to the leakage fault. BRIEF DESCRIPTION OF DRAWINGS

[0042] Fig. 1 is a structural schematic diagram of the switch electric appliance of the present application;

[0043] Fig. 2 is a structural schematic diagram of the switch electric appliance of the first embodiment of the present application, in which the first half shell and the second half shell are in a separated state;

[0044] Fig. 3 is a projection view of the power supply control mechanism of the switch electric appliance of the first embodiment of the present application;

[0045] Fig. 4 is a three-dimensional structural schematic diagram of the power supply control mechanism of the switch electric appliance of the first embodiment of the present application;

[0046] Fig. 5 is an enlarged structural schematic diagram of S1 part of Fig. 4 of the present application;

[0047] Fig. 6 is a projection view of the first half shell of the switch electric appliance of the first embodiment of the present application;

[0048] Fig. 7 is a three-dimensional structural schematic diagram of the first half shell of the switch electric appliance of the first embodiment of the present application;

[0049] Fig. 8 is an enlarged structural schematic diagram of S2 part of Fig. 7 of the present application;

[0050] Fig. 9 is an enlarged structural schematic diagram of S3 part of Fig. 7 of the present application;

[0051] Fig. 10 is a structural schematic diagram of the second half shell of the switch electric appliance of the present application;

[0052] Fig. 11 is an enlarged structural schematic diagram of S4 part of Fig. 10 of the present application;

[0053] Fig. 12 is a sectional structural schematic diagram of the switch electric appliance of the first embodiment of the present application;

[0054] Fig. 13 is a structural schematic diagram of the reset button of the switch electric appliance of the first embodiment of the present application;

[0055] Fig. 14 is a structural schematic diagram of the first contact of the switch electric appliance of the first embodiment of the present application;

[0056] Fig. 15 is a structural diagram of a second contact of the switching device according to the first embodiment of the present application;

[0057] Fig. 16 is a structural diagram of the switching device according to the second embodiment of the present application, in which a first half case and a second half case are in a separated state;

[0058] Fig. 17 is a projection view of a power supply control mechanism of the switching device according to the second embodiment of the present application;

[0059] Fig. 18 is a perspective structural diagram of the power supply control mechanism of the switching device according to the second embodiment of the present application;

[0060] Fig. 19 is an enlarged structural diagram of an S5 portion of Fig. 18 according to the second embodiment of the present application;

[0061] Fig. 20 is a projection view of the first half case of the switching device according to the second embodiment of the present application;

[0062] Fig. 21 is a perspective structural diagram of the first half case of the switching device according to the second embodiment of the present application;

[0063] Fig. 22 is an enlarged structural diagram of an S6 portion of Fig. 21 according to the second embodiment of the present application;

[0064] Fig. 23 is a sectional structural diagram of the switching device according to the second embodiment of the present application;

[0065] Fig. 24 is a structural diagram of a reset button of the switching device according to the second embodiment of the present application;

[0066] Fig. 25 is a structural diagram of a first contact mechanism of the switching device according to the second embodiment of the present application;

[0067] Fig. 26 is a structural diagram of the first contact of the switching device according to the second embodiment of the present application;

[0068] Fig. 27 is a structural diagram of a contact support of the switching device according to the second embodiment of the present application;

[0069] Fig. 28 is a structural diagram of a first contact spring of the switching device according to the second embodiment of the present application;

[0070] Fig. 29 is a structural diagram of a second contact of the switching device according to the second embodiment of the present application;

[0071] Fig. 30 is an electrical schematic diagram of a circuit breaker with a residual current protection function according to the related art.

[0072] Explanation of reference signs: leakage operation unit c; 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 part r3, button lock end r31, button connecting hole r32, button driving part r4; switch contact system a; first contact mechanism 1, first contact 1-1, first contact contact part 1-11, first contact driven part 1-12, first contact connecting part 1-13, first contact wiring part 1-14, first contact point 1-15, first contact shaft hole 1-16, first contact spring hook hole 1-17, first contact wiring hole 1-18, spring limiting block 1-19, contact support 1-2, support side plate 1-21, support connecting plate 1-22, support shaft hole 1-211, support connecting hole 1-212, support wiring part 1-23, support wiring hole 1-231, first contact limiting block 1-24, first contact spring 1-3, single torsion spring part 1-31, spiral body 1-311, first torsion spring arm 1-312, second torsion spring arm 1-313, connecting section 1-32; second contact mechanism 2, second contact 2-1, second contact contact plate 2-11, second contact middle plate 2-12, second contact support leg 2-13, second contact wiring plate 2-14, second contact wiring hole 2-15, second contact spring 2-2; first reset part 7; trip lever 3, trip lever mounting part 3-2, trip lever matching plate 3-1; tripping device 4, coil assembly 4-1, top lever 4-2; zero sequence current transformer 5; transmission lever 6; shell h, first half shell h1, button mounting hole h1-1, button head guiding slot h1-11, button limiting plate h1-2, driving part guiding slot h1-3, second contact mounting structure h1-4, second contact spring block h1-41, spring block plate h1-411, spring limiting block h1-412, second contact guiding wall h1-42, second contact guiding plate h1-421, second contact clamping block h1-422, second contact limiting block h1-43, second contact clamping hook h1-44, first side block plate h1-45, second side block plate h1-46, second contact block table h1-47, first contact spring column h1-5, first contact mounting shaft h1-6, tripping device mounting slot h1-7, first trip lever shaft hole h1-8; second half shell h2, driving part guiding rib h2-3, first contact limiting column h2-6, second trip lever shaft column h2-8, second trip lever shaft hole h2-80; shell guiding hole h3; breaking unit b. DETAILED DESCRIPTION

[0073] The following embodiments of the switch device of the present application are further illustrated in conjunction with the accompanying drawings. The switch device of the present application is not limited to the description of the following embodiments.

[0074] As shown in Fig. 1-15, the switchgear of the first embodiment of the present application is preferably a circuit breaker, in particular a circuit breaker with residual current protection function.

[0075] As shown in Fig. 1-2, the switchgear of the first embodiment of the present application 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 switchgear) and a main contact system, the circuit in which 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 and the main static contact to close and open, 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 in which 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 switchgear of the first embodiment of the present application trips and opens. 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 switchgear of the first embodiment of the present application trips and opens, that is, the electric leakage operating unit c can also realize the remote opening function. Further, the switchgear of the first embodiment of the present application comprises two or more than two 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 switchgear of the first embodiment of the present application 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.

[0076] 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 when receiving a signal, the tripping device 4 drives the tripping lever 3 to move, so that 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 latched again 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 again and simultaneously drives the tripping device 4 to reset through the tripping lever 3, so that the operating mechanism can be latched again 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.

[0077] Specifically, as shown in FIGS. 2, 6-7, 10 and 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.

[0078] Specifically, as shown in FIGS. 3-8, 10 and 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 protrude 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, and 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.

[0079] Specifically, as shown in FIG. 3-7, 10-13, 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 with the trip unit 4 in transmission and cooperates 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 with the trip bar cooperation plate 3-1 in transmission, 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 cooperation between 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 out of snap cooperation. 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 be out of snap cooperation with the reset button r, the reset button r moves to the snap 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 cooperation, 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 rotation 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.

[0080] 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 position, that is, after the reset button r is out of snap cooperation with the trip bar 3, the button spring drives the reset button r to move from the snap position to the trip position, when the reset button r moves to the snap position, the action force of the button spring needs to be overcome and the button spring needs to store energy.

[0081] As shown in FIGS. 2-4, 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 and be latched with the unlatching rod 3 again 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 and be latched with the unlatching rod 3 again 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 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 (i.e. the operating mechanism of the breaking unit b mentioned above) of the switch device to unlatch and unlatch the reset button r; 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 (i.e. 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 the connecting circuit for connecting the control module and the unlatching device 4, and the switch contact system a is turned off (i.e. 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.

[0082] 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, and the switch device of the embodiment is tripped, so that the main circuit is turned off, and the thyristor and the electromagnetic coil of 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 under a leakage fault, and the power supply circuit (i.e. the actuation circuit is turned off) of the thyristor and the unlatching device 4 can be turned off by the switch contact system a no matter the switch device is connected in series or in reverse, so as to also ensure that the thyristor and the electromagnetic coil of the unlatching device 4 will not be damaged due to passing through a large current for a long time under a leakage fault.

[0083] As shown in FIGS. 2-4, the switch contact system a comprises a first contact mechanism 1 and a second contact mechanism 2 linked with the reset button r, the first contact mechanism 1 comprises a first contact 1-1, the second contact mechanism 2 comprises a second contact 2-1, the first contact mechanism 1 is closed and opened with the second contact 2-1 through the first contact 1-1; in the process that the reset button r moves to the latching position, that is, in the process that the reset button r moves from the tripping position to the latching position, the first contact mechanism 1 is driven to move so as to close the first contact 1-1 and the second contact 2-1; the reset button r moves to the tripping position, the first contact mechanism 1 is driven to move so as to open the first contact 1-1 and the second contact 2-1; the first contact 1-1 and the second contact 2-1 are rigid structures.

[0084] The first contact 1-1 and the second contact 2-1 are arranged in the above manner and are rigid structures, which can make the first contact 1-1 and the second contact 2-1 made of thick metal materials, thereby increasing the current carrying capacity and arc resistance of the switch contact system a, and is conducive to improving the breaking capacity of the switch contact system a.

[0085] Further, the first contact 1-1 and the second contact 2-1 are in contact and conductive when or before the reset button r moves to the latching position, that is, the moment when the first contact 1-1 and the second contact 2-1 are in contact and conductive is the same as the moment when the reset button r moves to the latching position, or the moment when the first contact 1-1 and the second contact 2-1 are in contact and conductive is before the moment when the reset button r moves to the latching position. Further, the first contact 1-1 and the second contact 2-1 are in contact and conductive before the reset button r moves to the latching position, thereby ensuring that the first contact 1-1 and the second 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 first contact 1-1 and the second contact 2-1 are initially in contact, in the process that the reset button r continues to move to the latching position, that is, in the process that the reset button r moves from the middle position of the button to the latching position, the first contact mechanism 1 and / or the second contact 2-1 move under the driving of the reset button r and the first contact 1-1 and the second contact 2-1 remain in the conductive state, that is, in the process that the reset button r moves from the middle position of the button to the latching position, the first contact mechanism 1 and the second contact 2-1 remain in the contact and conductive state, one of the first contact mechanism 1 and the second contact 2-1 moves under the driving of the reset button r and the other remains stationary, or both the first contact mechanism 1 and the second contact 2-1 move under the driving of the reset button r, thereby ensuring the reliable closing of the switch contact system a and ensuring that the reset button r can move to the latching position to restore the latching cooperation with the tripping lever 3 and drive the tripping device 4 to reset.

[0086] As shown in FIG. 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 first contact mechanism 1 and the second contact 2-1 are both driven by the reset button r.

[0087] Further, as shown in FIG. 2-4, the second contact 2-1 has two working positions, i.e. the first position and the second position; the switch contact system a further comprises a second contact spring 2-2, which acts on the second contact 2-1 to keep it in the first position; when the reset button r moves from the unlatching position to the button middle position, the first contact 1-1 and the second contact 2-1 are initially contacted, and meanwhile the second contact 2-1 is kept in the first position; then when the reset button r moves from the button middle position to the latching position, the second contact 2-1 is driven to move by the first contact mechanism 1 and the second contact spring 2-2 is energized, i.e. when the reset button r moves from the button middle position to the latching position, the reset button r drives the first contact mechanism 1 to move, and the first contact mechanism 1 simultaneously drives the second contact 2-1 to move, at this time the second contact 2-1 is in the second position, and the second contact 2-1 simultaneously energizes the second contact spring 2-2; when the reset button r moves from the latching position to the unlatching position, the second contact spring 2-2 is de-energized to drive the second contact 2-1 to reset to the initial position of the second contact, i.e. the second contact spring 2-2 is de-energized to drive the second contact 2-1 to move from the second position to the first position.

[0088] Further, the second contact 2-1 is integrally movably arranged or rotationally arranged. Further, in the embodiment, as shown in FIG. 2-4, the second contact 2-1 is preferably integrally movably arranged. Further, the second 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 second contact 2-1.

[0089] Specifically, as shown in FIG. 3-4, 6-7, 9, 15, one implementation of the integrally movably arranged second contact 2-1 is as follows:

[0090] The mechanism shell comprises a second contact mounting structure h1-4 arranged on the first bottom wall thereof, the second contact mounting structure h1-4 comprising a second contact spring stop h1-41, a second contact guide wall h1-42 and a second contact limit stop h1-43, two groups of the second contact guide walls h1-42 are oppositely arranged, the second contact 2-1 is slidingly arranged between the two groups of the second contact guide walls h1-42, i.e. the two groups of the second contact guide walls h1-42 enclose a second contact sliding groove with both ends being open, the second contact 2-1 is slidingly arranged in the second contact sliding groove, the second contact 2-1 is guided and limited by the two groups of the second contact guide walls h1-42 respectively, so that the second contact 2-1 can only move along the extension direction of the second contact sliding groove, the second contact spring stop h1-41 is oppositely arranged with the second contact limit stop h1-43, both are oppositely arranged with both ends of the second contact sliding groove respectively, the second contact spring 2-2 is cooperated with the second contact spring stop h1-41 at one end and with the second contact 2-1 at the other end, the second contact spring 2-2 limits the second contact 2-1 with the second contact limit stop h1-43, so as to keep the second contact 2-1 in the first position. Further, the first half shell h1 comprises a first bottom wall, i.e. the second contact mounting structure h1-4 is arranged on the first half shell h1.

[0091] As other embodiments of the second contact mounting structure h1-4, the second contact limit stop h1-43 is not arranged on the first bottom wall, at least one end of the second contact guide wall h1-42 away from the second contact spring stop h1-41 is provided with the second contact limit stop h1-43, one end of the second contact limit stop h1-43 is connected with the corresponding second contact guide wall h1-42 and the other end is protruded to the middle part of the two groups of the second contact guide walls h1-42.

[0092] Further, the second contact 2-1 comprises a second contact contact plate 2-11, a second contact middle plate 2-12, and a second contact support leg 2-13, the second contact contact plate 2-11 is used to close and disconnect with the first contact 1-1, among a pair of side edges of the second contact middle plate 2-12, one side edge is connected with one end of the second contact contact plate 2-11 by bending, and the other side edge is connected with one end of the second contact support leg 2-13 by bending, the second contact middle plate 2-12 is arranged opposite to the first bottom wall, the second contact contact plate 2-11 and the second contact support leg 2-13 are bent to the same side of the second contact contact plate 2-11, the other end of the second contact contact plate 2-11 and the other end of the second contact support leg 2-13 are respectively slidably connected with the first bottom wall, and the second contact contact plate 2-11 and the second contact middle plate 2-12 are both slidably arranged between the two groups of second contact guide walls h1-42; one end of the second contact spring 2-2 is matched with the second contact spring stop h1-41, and the other end is matched with the second contact support leg 2-13, and the second contact spring 2-2 makes the free end of the second contact contact plate 2-11 (i.e. the end of the second contact contact plate 2-11 slidably connected with the first bottom wall) abut against the second contact limiting stop h1-43 to limit the cooperation. Further, the second contact 2-1 further comprises a second contact wiring plate 2-14, the second contact wiring plate 2-14 is coplanar with the second contact middle plate 2-12, and the two are integrally formed in an L-shaped structure, and the second contact wiring plate 2-14 is used to connect the wires to connect the second contact 2-1 into the corresponding circuit. Further, the second contact wiring plate 2-14 is provided with a second contact wiring hole 2-15, and in use, the wires are inserted into the second contact wiring hole 2-15 and then welded, so as to improve the reliability of the connection between the second contact wiring plate 2-14 and the wires and the convenience of the welding of the two.

[0093] Further, each of the second contact guide walls h1-42 comprises a second contact guide plate h1-421, and at least one of the second contact guide walls h1-42 further comprises a second contact clamping block h1-422, one end of the second contact clamping block h1-422 is connected with the corresponding second contact guide plate h1-421 and the other end protrudes to the middle of the two second contact guide walls h1-42, the second contact clamping block h1-422 is in sliding fit and limiting fit with the second contact middle plate 2-12, which prevents the second contact 2-1 from moving away from the first bottom wall and thus prevents the second contact 2-1 from escaping from between the two second contact guide walls h1-42 during the sliding process; the second contact spring stop h1-41 comprises a second contact spring stop plate h1-411 and a second contact spring stop block h1-412, one end of the second contact spring stop plate h1-411 is connected with the first bottom wall and the other end is provided with the second contact spring stop block h1-412, the second contact spring stop block h1-412 is arranged opposite to the first bottom wall, and one end of the second contact spring 2-2 abuts against the second contact spring stop plate h1-411 and is located between the second contact spring stop block h1-412 and the first bottom wall. Further, the two second contact guide walls h1-42 are provided with the second contact clamping block h1-422. Further, the second contact guide plate h1-421 of one of the second contact guide walls h1-42 is further provided with a stepped structure, the stepped structure comprises a stepped horizontal surface and a stepped vertical surface, the stepped horizontal surface is arranged opposite to the first bottom wall, and the second contact wiring plate 2-14 is arranged on the stepped horizontal surface, and one side edge of the second contact wiring plate 2-14 is abutted against the stepped vertical surface by the second contact spring 2-2.

[0094] As another embodiment of the second contact mounting structure h1-4, the second contact guide wall h1-42 is not provided with the second contact clamping block h1-422, the second contact guide plate h1-421 is provided with a second contact guide groove, and a pair of side edges of the second contact middle plate 2-12 are respectively arranged in sliding fit in the second contact guide grooves of the two second contact guide plates h1-421.

[0095] As another embodiment of the second contact 2-1, the second 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 first contact 1-1 to move, and at the same time the first contact 1-1 drives the second contact 2-1 to rotate. Further, the second contact spring 2-2 is a torsion spring, a tension spring or a compression spring.

[0096] The first contact 1-1 is arranged in rotation or arranged in overall movement.

[0097] Further, in the embodiment, as shown in Figs. 2-4, the first contact 1-1 is preferably arranged to rotate. Further, the switch contact system a further comprises a first reset member 7 acting on the first contact 1-1 to have a rotating movement tendency to disconnect from the second contact 2-1. The reset button r is moved from the tripped position to the button intermediate position to rotate the first contact 1-1 to the initial contact with the second contact 2-1, and the reset button r is moved from the button intermediate position to the latched position to drive the first contact mechanism 1 to rotate, and the first contact mechanism 1 simultaneously drives the second contact 2-1 to move; in the process of moving the reset button r to the tripped position, the second contact spring 2-2 is released to drive the second contact 2-1 to reset to the initial position of the second contact.

[0098] Specifically, as shown in Figs. 2-4 and 12-14, an implementation of the rotating arrangement of the first contact mechanism 1 and the linkage of the first contact mechanism 1 and the reset button r is as follows:

[0099] The first contact 1-1 comprises a first contact contact portion 1-11 and a first contact driven portion 1-12, one end of the first contact contact portion 1-11 is connected to one end of the first contact driven portion 1-12 by bending, the other end of the first contact contact portion 1-11 is provided with a first contact point 1-15 for cooperating with the second contact 2-1, and the other end of the first contact driven portion 1-12 (i.e. the free end of the first contact driven portion 1-12 and the end of the first contact driven portion 1-12 away from the first 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 against the free end of the first contact driven portion 1-12 to rotate the first contact 1-1 to close with the second contact 2-1, and at the same time, the first 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 first contact driven portion 1-12 is avoided, the first reset member 7 is released to drive the first contact 1-1 to rotate to disconnect from the second contact 2-1. Further, the first contact contact portion 1-11 and the first contact driven portion 1-12 are integrally formed in an L-shaped structure.

[0100] Further, the bending connection part of the first contact contact part 1-11 and the first contact driven part 1-12 is provided with a first contact shaft hole 1-16, and the first contact 1-1 is rotatably arranged through the first contact shaft hole 1-16. Further, the first half shell h1 of the mechanism shell includes a first contact mounting shaft h1-6 arranged on the first bottom wall, and the first contact 1-1 is rotatably arranged on the first contact mounting shaft h1-6 through the first contact shaft hole 1-16. Further, the second half shell h2 of the mechanism shell further includes a first contact limiting column h2-6, one end of the first contact mounting shaft h1-6 is connected with the first bottom wall, and the first contact limiting column h2-6 abuts on the other end of the first contact mounting shaft h1-6, and the outer diameter of the first contact limiting column h2-6 is greater than the inner diameter of the first contact shaft hole 1-16, so as to reliably limit the first contact 1-1 on the first contact mounting shaft h1-6.

[0101] Further, the first contact 1-1 further includes a first contact wiring part 1-14, which is used for connecting a wire to connect the first contact 1-1 into a corresponding circuit, and the first contact wiring part 1-14 is arranged on the bending connection part of the first contact contact part 1-11 and the first contact driven part 1-12. Further, the first contact wiring part 1-14, the first contact contact part 1-11 and the first contact driven part 1-12 integrally form a Y-shaped structure, the first contact wiring part 1-14 is provided with a first contact wiring hole 1-18 for connecting the wire, for example, the wire can be inserted into the first contact wiring hole 1-18 and then welded, so as to improve the connection reliability of the first contact wiring part 1-14 and the wire. Further, in the rotation axis direction of the first contact 1-1, the thickness of the first contact wiring part 1-14 is less than or equal to the thickness of the first contact contact part 1-11.

[0102] Further, the first reset member 7 is a tension spring; the first contact 1-1 further includes a first contact connecting part 1-13, which is arranged on the first contact contact part 1-11, one end of the first reset member 7 is connected with the first contact connecting part 1-13 and the other end is fixedly arranged (for example, hung on the first contact spring column h1-5 arranged on the first bottom wall). Further, in the rotation axis direction of the first contact 1-1, the thickness of the first contact connecting part 1-13 is less than the thickness of the first contact contact part 1-11, the first contact connecting part 1-13 is provided with a first contact spring hanging hole 1-17, and one end of the first reset member 7 is hung in the first contact spring hanging hole 1-17. Further, in the rotation axis direction of the first contact 1-1, the first contact connecting part 1-13 is located at the central position of the first contact contact part 1-11; the first contact connecting part 1-13 and the first contact 1-15 are respectively located on both sides of the first contact contact part 1-11.

[0103] As other embodiments of the first reset member 7, the first reset member 7 is a torsion spring, which is sleeved on the first contact mounting shaft h1-6, one spring arm is matched with the first 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 first contact 1-1 and the other end is matched with the mechanism shell.

[0104] As other embodiments of the linkage between the first contact 1-1 and the reset button r, the reset button r is connected with the first 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 first contact driven part 1-12.

[0105] As shown in FIGS. 3-5 and 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 transmissionally matched with the first contact 1-1.

[0106] 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 transmissionally matched with the first contact driven part 1-12 of the first contact 1-1.

[0107] Further, the reset button r further includes a button limiting part r2 and a button locking part r3, the button limiting part r1 is limitingly matched with the mechanism shell to prevent the reset button r from being pulled out of the mechanism shell, one end (button locking end r31) of the button locking part r3 is used for being buckled with the tripping lever 3 and the other end is connected with the button driving part r4 by bending. Further, the extending 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 with the button driving part r4 perpendicularly. 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.

[0108] As shown in FIGS. 3-8, 10 and 12-13, it is one assembly mode of the reset button r and the mechanism shell:

[0109] The button head r1 includes a button avoiding slot r11, and a button first side wall r12, a button bottom wall r14 and a button second side wall r13 arranged in sequence around the button avoiding slot r11; the button first side wall r12 is connected with the button limiting part r2; the mechanism shell further includes a button limiting plate h1-2 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 arranged in the button avoiding slot r11, and the two ends are matched with the button limiting plate h1-2 and the button bottom wall r14 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 arranged in the two button head guide slots h1-11 respectively; the button limiting part r2 and the button limiting plate h1-2 are limited and matched to 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.

[0110] Further, the first half shell h1 of the mechanism shell includes a driving part guide slot h1-3, and the second half shell h2 includes 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, thereby limiting the button driving part r4 and avoiding excessive swing of the button driving part r4 in the working process to damage the reliable cooperation between the button driving part r4 and the first contact 1-1 and the structure of the reset button r itself. Further, as shown in FIGS. 10-11, in the second half shell h2, the second tripping lever shaft column h2-8, the first contact limiting column h2-6 and the driving part guide rib h2-3 are connected with each other through reinforcing ribs respectively to improve the structural strength.

[0111] As shown in FIGS. 16-29, it is a second embodiment of the switch electric appliance of the application, and the difference between the switch electric appliance of the second embodiment and the switch electric appliance of the first embodiment mainly lies in the structure and working mode of the power supply control mechanism.

[0112] As shown in FIGS. 16-19, in the power supply control mechanism of the switch electric appliance of the second embodiment, the second contact mechanism 2 is not provided with the second contact spring 2-2, and the second contact 2-1 is fixedly arranged, the position of the reset button r when the first contact 1-1 and the second contact 2-1 initially contact is the button middle position, and in the process that the reset button r moves from the button middle position to the snap position, the first contact mechanism 1 moves under the driving of the reset button r, the second contact 2-1 remains stationary, and the first contact mechanism 1 and the second contact 2-1 remain in the contact and conduction state.

[0113] Further, as shown in Figs. 16-19, the first contact mechanism 1 comprises a first contact 1-1, a contact support 1-2 and a first contact spring 1-3, the first contact mechanism 1 is rotatably arranged by the contact support 1-2, the first contact 1-1 is movably arranged on the contact support 1-2, and the first contact spring 1-3 is cooperated with the first contact 1-1 and the contact support 1-2 respectively, so that the first contact 1-1 is kept relatively static by the limit cooperation with the contact support 1-2; during the process that the reset button r moves from the tripped position to the button intermediate position, the contact support 1-2 is driven to rotate to bring the first contact 1-1 into initial contact with the second contact 2-1, and then during the process that the reset button r moves from the button intermediate position to the latching position, the contact support 1-2 is driven to rotate relatively to the first contact 1-1 to store energy in the first contact spring 1-3, that is, during the process that the reset button r moves from the button intermediate position to the latching position, the contact support 1-2 is driven to move relatively to the first contact 1-1, and at the same time the first contact spring 1-3 is stored energy; during the process that the reset button r moves from the button intermediate position to the tripped position, the first contact spring 1-3 is released to make the first contact 1-1 move relatively to the contact support 1-2 to restore the limit cooperation, that is, during the process that the reset button r moves from the button intermediate position to the tripped position, the first contact spring 1-3 is released to make the first contact 1-1 move relatively to the contact support 1-2 to restore the limit cooperation, and then the first contact mechanism 1 is moved as a whole to be disconnected from the second contact 2-1.

[0114] Specifically, as shown in Figs. 16-19 and 25, an embodiment of the first contact mechanism 1 is as follows:

[0115] The first contact mechanism 1 is rotationally arranged. Further, the first contact 1-1 is rotationally arranged on the contact support 1-2. Further, the contact support 1-2 comprises support side plates 1-21, support connecting plates 1-22, and first contact limiting stops 1-24. Two groups of support side plates 1-21 are oppositely and spacedly arranged. The support connecting plates 1-22 are respectively connected to the two groups of support side plates 1-21 at both ends. At least one support side plate 1-21 is provided with a first contact limiting stop 1-24. The first contact 1-1 is rotationally arranged between the two groups of support side plates 1-21. The first contact spring 1-3 acts on the first contact 1-1 to limit the cooperation of the first contact 1-1 and the first contact limiting stop 1-24, so that the first contact 1-1 and the contact support 1-2 remain relatively stationary. That is, the first contact 1-1 and the contact support 1-2 remain relatively stationary when the first contact mechanism 1 moves as a whole. Further, the contact support 1-2 further comprises a support wiring portion 1-23. One support side plate 1-21 is provided with a support wiring portion 1-23. The support wiring portion 1-23 is used to be connected with a wire to connect the first contact mechanism 1 into a corresponding circuit. Further, the support wiring portion 1-23 is provided with a support wiring hole 1-231. For example, after the wire is inserted into the support wiring hole 1-231, the support wiring portion 1-23 and the wire are connected together by welding, thereby improving the connection reliability of the support wiring portion 1-23 and the wire. Further, the contact support 1-2 is an integral structure which is cut and bent from a metal plate, thereby improving the integrity and firmness of the structure of the contact support 1-2.

[0116] Further, the first contact 1-1 and the contact support 1-2 are coaxially rotationally arranged. Further, the first contact 1-1 comprises a first contact shaft hole 1-16 arranged at one end thereof. The contact support 1-2 comprises support shaft holes 1-211. One end of each of the two groups of support side plates 1-21 is provided with a support shaft hole 1-211. The first contact 1-1 and the contact support 1-12 are both rotationally arranged on the same rotating shaft (for example, the first contact mounting shaft h1-6 of the first half shell h1). Further, the first contact shaft hole 1-16 and the first contact 1-15 are respectively arranged at both ends of the first contact 1-1 in the length direction of the first contact 1-1. Further, the first half shell h1 of the mechanism shell comprises a first contact mounting shaft h1-6 arranged on the first bottom wall thereof. The second half shell h2 of the mechanism shell further comprises a first contact limiting column h2-6. One end of the first contact mounting shaft h1-6 is connected to the first bottom wall. The first contact limiting column h2-6 abuts on the other end of the first contact mounting shaft h1-6. The outer diameter of the first contact limiting column h2-6 is greater than the inner diameter of the support shaft hole 1-21, thereby reliably limiting the first contact mechanism 1 on the first contact mounting shaft h1-6.

[0117] Further, the first contact spring 1-3 is a torsion spring, which is sleeved on the rotating shaft of the first contact 1-1, and the first contact 1-1 is electrically connected with the contact support 1-2 through the first contact spring 1-3. Further, the first contact spring 1-3 is a double torsion spring, which includes two single torsion spring parts 1-31 arranged oppositely, both of which are sleeved on the rotating shaft of the first contact 1-1 (for example, the two single torsion spring parts 1-31 are sleeved on the rotating shaft of the first contact 1-1 through respective helical bodies 1-311) and are located on both sides of the first contact 1-1 respectively, one spring arm of each of the two single torsion spring parts 1-31 is matched with the first contact 1-1, and the other spring arm is connected with the support connecting plate 1-22. Further, the first contact 1-1 further includes spring limiting blocks 1-19, which are arranged on both sides of the first contact 1-1 in the direction of the rotating shaft of the first contact 1-1 respectively, one spring arm (first torsion spring arm 1-312) of each of the two single torsion spring parts 1-31 is located on both sides of the first contact 1-1 respectively and matched with the two spring limiting blocks 1-19 respectively, and the other spring arm (second torsion spring arm 1-131) of each of the two single torsion spring parts 1-31 is connected (for example, connected through a connecting segment 1-32) with the support connecting plate 1-22.

[0118] As another embodiment of the first contact mechanism 1, the first contact mechanism 1 is arranged to rotate through the contact support 1-2, and the first contact 1-1 is arranged to move on the contact support 1-2 as a whole.

[0119] As another embodiment of the first contact mechanism 1, the first contact mechanism 1 is arranged to move linearly through the contact support 1-2, that is, the first contact mechanism 1 is arranged to close and open with the second contact 2-1 through linear reciprocating movement. Further, the first contact 1-1 can be arranged to move linearly on the contact support 1-2 or to rotate on the contact support 1-2.

[0120] As shown in FIGS. 16-19 and 23, the reset button r is connected with the first contact mechanism 1 through a transmission rod 6, that is, the reset button r is connected with the contact support 1-2 through the transmission rod 6, one end of the transmission rod 6 is connected with the reset button r in transmission, and the other end is connected with the contact support 1-2 in rotation, that is, when the reset button r is switched between the tripped position and the latched position, the first contact mechanism 1 is driven to rotate reciprocatingly through the transmission rod 6 to close and open with the second contact 2-1. Further, one end of the support side plate 1-21 of the contact support 1-2 is provided with a support connecting hole 1-212, the support connecting hole 1-212 and the support shaft hole 1-211 are arranged at both ends of the support side plate 1-21 respectively, and the transmission rod 6 is connected with the support side plate 1-21 in rotation through the support connecting hole 1-212.

[0121] Further, the transmission rod 6 is a U-shaped transmission rod.

[0122] Further, the first half shell h1 of the mechanism shell comprises a driving part guide groove 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 groove h1-3 to form a shell guide hole h3 for the transmission rod 6 to pass through, thereby limiting the transmission rod 6 to avoid excessive swing of the transmission rod 6 and reliable cooperation between the transmission rod 6 and the first contact 1-1 during work. Further, as shown in the figure, in the second half shell h2, the second trip lever shaft column h2-8, the first contact limiting column h2-6 and the driving part guide rib h2-3 are connected to each other by a reinforcing rib to improve the structural strength.

[0123] In the switch device of the embodiment, the reset button r is not provided with a button driving part r4, and one end of a button locking part r3 of the reset button r is used for snap-fit cooperation with the trip lever 3, and the other end is rotationally connected with the transmission rod 6. Further, one end of the button locking part r3 is a button locking end r31 used for snap-fit cooperation with the trip lever 3, and the other end is provided with a button connecting hole r32 for rotationally inserting the transmission rod 6 thereinto.

[0124] As another embodiment of the reset button r and the first contact mechanism 1 linkage, the reset button r is provided with a button driving part r4, and the power control mechanism comprises a second reset part acting on the contact support 1-2; during movement of the reset button r to the snap-fit position, the button driving part r4 presses the contact support 1-2 to rotate the first contact mechanism 1 to close the first contact 1-1 and the second contact 2-1; during movement of the reset button r to the trip position, the button driving part r4 avoids the contact support 1-2, and the second reset part drives the first contact mechanism 1 to rotate to disconnect the first contact 1-1 and the second contact 2-1.

[0125] Specifically, as shown in FIGS. 16-22 and 29, the implementation mode of the fixed setting of the second contact 2 is as follows:

[0126] The second contact 2-1 is fixedly set in cooperation with the second contact installation structure h1-4.

[0127] Further, the second contact mounting structure h1-4 comprises a second contact hook h1-44, a first side baffle h1-45, a second side baffle h1-46 and a second contact limiting stop h1-43, the first side baffle h1-45 and the second side baffle h1-46 are oppositely arranged, the second contact hook h1-44 and the second contact limiting stop h1-43 are oppositely arranged, the second contact hook h1-44 comprises a hook arm and a hook part, one end of the hook arm is connected with the first bottom wall and the other end is connected with the hook part; the second contact 2-1 comprises a second contact contact plate 2-11, a second contact intermediate plate 2-12 and a second contact wiring plate 2-14, the second contact contact plate 2-11 is used for closing and opening with the first contact 1-1, one end of the second contact contact plate 2-11 is connected with one end of the second contact intermediate plate 2-12 by bending, the other end of the second contact contact plate 2-11 is limited and matched with the second contact limiting stop h1-43 and abuts on the first bottom wall, the other end of the second contact intermediate plate 2-12 is connected with the second contact wiring plate 2-14 by bending and the second contact intermediate plate 2-12 is coplanar with the second contact wiring plate 2-14; the second contact contact plate 2-11 is located between the first side baffle h1-45 and the second side baffle h1-46 and is limited and matched with the two baffles respectively; the second contact wiring plate 2-14 is opposite to the first bottom wall and abuts on the second side baffle h1-46, the hook arm abuts on the end of the second contact intermediate plate 2-12 away from the second contact contact plate 2-11 and the hook part is clamped on the side of the second contact intermediate plate 2-12 away from the first bottom wall. Further, the second contact mounting structure h1-4 further comprises a second contact stop table h1-47, the second contact stop table h1-47 is located between the first side baffle h1-45 and the second side baffle h1-46, the free end of the second contact contact plate 2-11 (i.e. the end of the second contact contact plate 2-11 abutting on the first bottom wall) is interposed between the second contact stop table h1-47 and the second contact limiting stop h1-43 and is limited and matched with the two respectively, further improving the installation reliability and stability of the second contact 2-1. Further, the second contact wiring plate 2-14 and the second contact intermediate plate 2-12 are integrally formed as an L-shaped plate structure.

[0128] As other embodiments of the second contact mounting structure h1-4, the second contact mounting structure h1-4 is not provided with the second contact limiting stop h1-43, the first side baffle h1-45 and the second side baffle h1-46 are provided with contact plate limiting grooves for inserting a pair of side edges of the second contact contact plate 2-11.

[0129] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when in use, and are only for the convenience of description, and do not indicate that the device or element referred to must have a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating relative importance.

[0130] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all should be considered as falling within the protection scope of the present application.

Claims

1. A power supply control mechanism, comprising a reset button (r) having a latching position and a tripping position, a tripping lever (3), a tripping device (4), a control module electrically connected with 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 lever (3) in the latching position, to move to the tripping position after unlatching with the tripping lever (3), and to drive the tripping device (4) to reset and restore latching with the tripping lever (3) through the tripping lever (3) when moving from the tripping 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 tripping device (4) to act according to a signal, the tripping lever (3) is driven to move by the tripping device (4) and is used to drive an operating mechanism of the switch electric appliance to trip and unlatch the reset button (r) from the tripping lever (3); the switch contact system (a) is turned on or turned off when the reset button (r) is in the latching position or the tripping position. characterized in that The switch contact system (a) comprises a first contact mechanism (1) and a second contact mechanism (2) linked with the reset button (r), the first contact mechanism (1) comprises a first contact (1-1), and the second contact mechanism (2) comprises a second contact (2-1); the first contact mechanism (1) is moved to make the first contact (1-1) close to the second contact (2-1) in the process of the reset button (r) moving to the latching position; the first contact mechanism (1) is moved to make the first contact (1-1) open from the second contact (2-1) in the process of the reset button (r) moving to the tripping position; the first contact (1-1) and the second contact (2-1) are rigid structures.

2. The power supply control mechanism according to claim 1, characterized by: The first contact (1-1) and the second contact (2-1) are in contact and turned on when or before the reset button (r) moves to the latching position.

3. The power supply control mechanism of claim 2, wherein: The first contact (1-1) and the second contact (2-1) are in contact and turned on before the reset button (r) moves to the latching position; the reset button (r) is in a button intermediate position when the first contact (1-1) and the second contact (2-1) are initially in contact, the first contact mechanism (1) and / or the second contact (2-1) are moved under the drive of the reset button (r) and the first contact (1-1) and the second contact (2-1) remain in the contact and turned on state in the process of the reset button (r) continuously moving to the latching position.

4. The power supply control mechanism of claim 3, wherein: The second contact mechanism (2) further comprises a second contact spring (2-2) acting on the second contact (2-1) to keep it in a first position; the reset button (r) is moved from the tripping position to the button intermediate position to make the first contact (1-1) and the second contact (2-1) initially in contact, the second contact spring (2-2) is driven to move by the first contact mechanism (1) and is energized in the process of the reset button (r) continuously moving to the latching position; the second contact spring (2-2) is de-energized to drive the second contact (2-1) to reset to the first position in the process of the reset button (r) moving to the tripping position. The second contact (2-1) is arranged in a whole moving mode or a rotating mode.

5. The power supply control mechanism of claim 4, wherein: The second contact (2-1) is arranged in a whole moving mode, and the second contact spring (2-2) is a compression spring, one end of which is fixedly arranged and the other end of which is matched with the second contact (2-1).

6. The power supply control mechanism of claim 5, wherein: The power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a second contact mounting structure (h1-4) arranged on a first bottom wall thereof, the second contact mounting structure (h1-4) comprises a second contact spring stop (h1-41), a second contact guide wall (h1-42) and a second contact limiting stop (h1-43), two groups of the second contact guide walls (h1-42) are oppositely arranged, the second contact (2-1) is slidingly arranged between the two groups of the second contact guide walls (h1-42) and is guided and limited to cooperate with the two groups of the second contact guide walls (h1-42) respectively, the second contact spring stop (h1-41) and the second contact limiting stop (h1-43) are oppositely arranged, one end of the second contact spring (2-2) is matched with the second contact spring stop (h1-41) and the other end of the second contact spring (2-2) is matched with the second contact (2-1), and the second contact spring (2-2) limits the cooperation of the second contact (2-1) and the second contact limiting stop (h1-43); The second contact (2-1) comprises a second contact contact plate (2-11), a second contact intermediate plate (2-12) and a second contact support leg (2-13), the second contact contact plate (2-11) is used for closing and opening with the first contact (1-1), one side of the second contact intermediate plate (2-12) is connected with the second contact contact plate (2-11) by being bent and the other side of the second contact intermediate plate (2-12) is connected with one end of the second contact support leg (2-13) by being bent, the second contact contact plate (2-11) and the second contact support leg (2-13) are bent to the same side of the second contact contact plate (2-11), the other end of the second contact contact plate (2-11) and the other end of the second contact support leg (2-13) are slidingly matched with the first bottom wall of the mechanism shell respectively, and the second contact contact plate (2-11) and the second contact intermediate plate (2-12) are guided and limited to cooperate with the two groups of the second contact guide walls (h1-42) respectively.

7. The power supply control mechanism of claim 4, wherein: The first contact (1-1) is arranged in a rotating mode, and comprises a first contact contact part (1-11) and a first contact driven part (1-12), one end of the first contact contact part (1-11) is connected with one end of the first contact driven part (1-12) by being bent, the other end of the first contact contact part (1-11) is provided with a first contact point (1-15) for cooperating with the second contact (2-1), and the other end of the first contact driven part (1-12) is transmissionally matched with the reset button (r); The bent connection part of the first contact contact part (1-11) and the first contact driven part (1-12) is provided with a first contact shaft hole (1-16), and the first contact (1-1) is arranged in a rotating mode through the first contact shaft hole (1-16); The bent connection part of the first contact contact part (1-11) and the first contact driven part (1-12) is provided with a first contact shaft hole (1-16), and the first contact (1-1) is arranged in a rotating mode through the first contact shaft hole (1-16); The switch contact system (a) further comprises a first reset member (7) acting on the first contact (1-1) to have a tendency to rotate and disconnect from the second contact (2-1); during movement of the reset button (r) to the latching position, the first contact (1-1) is driven to rotate and close with the second contact (2-1), and at the same time the first contact (1-1) stores energy for the first reset member (7); during movement of the reset button (r) to the tripping position, the first reset member (7) releases energy to drive the first contact (1-1) to rotate and disconnect from the second contact (2-1).

8. The power supply control mechanism of claim 7, wherein: The power supply control mechanism further comprises a mechanism shell comprising a button mounting hole (h1-2); the reset button (r) is integrally moved and provided, comprising a button head (r1), a button limiting portion (r2), a button lock portion (r3), and a button driving portion (r4), the button head (r1) is slidingly provided in the button mounting hole (h1-2) and protrudes from the mechanism shell on one end for external force operation, the button limiting portion (r2) is limitedly matched with the mechanism shell to prevent the reset button (r) from coming out of the mechanism shell, one end of the button lock portion (r3) is used for latching with the tripping lever (3) and the other end is connected with one end of the button driving portion (r4) through bending, and the other end of the button driving portion (r4) is used for transmission matching with the first contact driven portion (1-12), and the extension direction of the button driving portion (r4) is the same as the moving direction of the reset button (r); The mechanism shell comprises a first half shell (h1) and a second half shell (h2) relatively combined together; the first half shell (h1) comprises a driving portion guide groove (h1-3), and the second half shell (h2) comprises a driving portion guide rib (h2-3), the driving portion guide rib (h2-3) is inserted in the driving portion guide groove (h1-3) to form a shell guide hole (h3) for the button driving portion (r4) to pass through; The first half shell (h1) further comprises a first contact mounting shaft (h1-6), one end of the first contact mounting shaft (h1-6) is connected with the first half shell (h1), and the first contact (1-1) is rotatably mounted on the first contact mounting shaft (h1-6) through a first contact shaft hole (1-16) thereof; the second half shell (h2) further comprises a first contact limiting column (h2-6), the first contact limiting column (h2-6) abuts on the other end of the first contact mounting shaft (h1-6), and an outer diameter of the first contact limiting column (h2-6) is greater than an inner diameter of the first contact shaft hole (1-16); The first half shell (h1) further comprises a first tripping lever shaft hole (h1-8), and the second half shell (h2) further comprises a second tripping lever shaft column (h2-8), the second tripping lever shaft column (h2-8) is provided with a second tripping lever shaft hole (h2-80), and both ends of a rotating shaft of the tripping lever (3) are rotatably inserted in the first tripping lever shaft hole (h1-8) and the second tripping lever shaft hole (h2-80) respectively; The second tripping lever shaft column (h2-8), the first contact limiting column (h2-6), and the driving portion guide rib (h2-3) are connected with each other through reinforcing ribs respectively.

9. The power supply control mechanism of claim 3, wherein: The second contact (2-1) is fixedly arranged; the first contact mechanism (1) comprises a first contact (1-1), a contact support (1-2) and a first contact spring (1-3), the first contact mechanism (1) is rotatably arranged through the contact support (1-2), the first contact (1-1) is movably arranged on the contact support (1-2), and the first contact spring (1-3) is matched with the first contact (1-1) and the contact support (1-2) respectively, so that the first contact (1-1) is limitedly matched with the contact support (1-2) and kept relatively static; in the process that the reset button (r) moves from the tripping position to the button intermediate position, the contact support (1-2) is driven to rotate to drive the first contact (1-1) to initially contact the second contact (2-1), in the process that the reset button (r) moves from the button intermediate position to the tripping position, the contact support (1-2) is driven to move relatively to the first contact (1-1) and the first contact spring (1-3) is stored energy; in the process that the reset button (r) moves from the button intermediate position to the tripping position, the first contact spring (1-3) releases energy to drive the first contact (1-1) to move relatively to the contact support (1-2) and restore the limited matching.

10. The power supply control mechanism of claim 9, wherein: The first contact (1-1) is rotatably arranged on the contact support (1-2); the first contact (1-1) is electrically connected with the contact support (1-2) through the first contact spring (1-3).

11. The power supply control mechanism of claim 10, wherein: The first contact spring (1-3) is a torsion spring and is sleeved on the rotating shaft of the first contact (1-1); the first contact (1-1) is electrically connected with the contact support (1-2) through the first contact spring (1-3). The contact support (1-2) comprises support side plates (1-21), support connecting plates (1-22) and first contact limiting stops (1-24), two groups of support side plates (1-21) are oppositely and spacedly arranged, the support connecting plates (1-22) are respectively and foldedly connected with the two groups of support side plates (1-21) at two ends, at least one support side plate (1-21) is provided with a movable contact limiting stop (1-24); one end of the first contact (1-1) is rotatably arranged between the two groups of support side plates (1-21); the first contact spring (1-3) is matched with the first contact (1-1) and the contact support (1-21) respectively, so that the first contact (1-1) is limitedly matched with the first contact limiting stop (1-24) to keep the movable contact (1-1) of the switch and the contact support (1-2) relatively static.

12. The power supply control mechanism of claim 9, wherein: The power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a second contact mounting structure (h1-4) arranged on a first bottom wall thereof, the second contact mounting structure (h1-4) comprises a second contact hook (h1-44), a first side baffle (h1-45), a second side baffle (h1-46) and a second contact limiting stop (h1-43), the first side baffle (h1-45) and the second side baffle (h1-46) are oppositely arranged, the second contact hook (h1-44) and the second contact limiting stop (h1-43) are oppositely arranged, the second contact hook (h1-44) comprises a hook arm and a hook portion, one end of the hook arm is connected with the first bottom wall and the other end is connected with the hook portion; The second contact (2-1) comprises a second contact contact plate (2-11), a second contact intermediate plate (2-12) and a second contact wiring plate (2-14), the second contact contact plate (2-11) is used for closing and opening with the switch movable contact (1-1), one end of the second contact contact plate (2-11) is connected with one end of the second contact intermediate plate (2-12) by bending, the other end of the second contact contact plate (2-11) is limitedly matched with the second contact limiting stop (h1-43) and abuts on the first bottom wall, the other end of the second contact intermediate plate (2-12) is connected with the second contact wiring plate (2-14) by bending and the second contact intermediate plate (2-12) is coplanar with the second contact wiring plate (2-14); the second contact contact plate (2-11) is located between the first side baffle (h1-45) and the second side baffle (h1-46) and is limitedly matched with the first side baffle (h1-45) and the second side baffle (h1-46) respectively; the second contact wiring plate (2-14) is opposite to the first bottom wall and abuts on the second side baffle (h1-46), the end of the hook arm away from the second contact contact plate (2-11) abuts on the second contact intermediate plate (2-12) and the hook portion is clamped on the side of the second contact intermediate plate (2-12) away from the first bottom wall.

13. The power supply control mechanism of claim 9, wherein: The power supply control mechanism further comprises a transmission rod (6), one end of the transmission rod (6) is rotationally connected with the reset button (r) and the other end is rotationally connected with the contact support (1-2).

14. The power supply control mechanism of claim 13, wherein: The power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a button mounting hole (h1-2); the reset button (r) is integrally movably arranged and comprises a button head (r1), a button limiting portion (r2) and a button locking portion (r3), the button head (r1) is slidably arranged in the button mounting hole (h1-2) and one end thereof 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 being pulled out, the extension direction of the button locking portion (r3) is perpendicular to the movement direction of the reset button (r), one end of the button locking portion (r3) is used for snap-fit with the trip lever (3) and the other end is rotationally connected with the transmission rod (6); The mechanism shell comprises a first half shell (h1) and a second half shell (h2) which are relatively split together; the first half shell (h1) comprises a driving part guide groove (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 groove (h1-3) to form a shell guide hole (h3) through which the transmission rod (6) passes; The first half shell (h1) further comprises a first contact mounting shaft (h1-6), one end of the first contact mounting shaft (h1-6) is connected with the first half shell (h1), and the first contact mechanism (1) is rotatably mounted on the first contact mounting shaft (h1-6) through a first contact shaft hole (1-16) of the first contact mechanism (1); the second half shell (h2) further comprises a first contact limiting column (h2-6), the first contact limiting column (h2-6) abuts against the other end of the first contact mounting shaft (h1-6), and an outer diameter of the first contact limiting column (h2-6) is greater than an inner diameter of the first contact shaft hole (1-16); The first half shell (h1) further comprises a first trip lever shaft hole (h1-8), and the second half shell (h2) further comprises a second trip lever shaft column (h2-8), the second trip lever shaft column (h2-8) is provided with a second trip lever shaft hole (h2-80), and both ends of a rotating shaft of the trip lever (3) are rotatably inserted into the first trip lever shaft hole (h1-8) and the second trip lever shaft hole (h2-8) respectively; The second trip lever shaft column (h2-8), the first contact limiting column (h2-6) and the driving part guide rib (h2-3) are connected with each other through reinforcing ribs respectively.

15. A switchgear, characterized by: The switch apparatus comprises the power supply control mechanism according to any one of claims 1-14.

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