Power supply control mechanism

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

Description

TECHNICAL FIELD

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

[0002] As Figure 18 As shown in the figure, the existing circuit breaker with residual current protection function, from the outgoing line end of the main circuit output power after rectifier circuit (VD1-6 in the figure) rectification, the AC signal becomes DC signal, the DC signal is divided by the voltage dividing circuit (resistor R5-6 in the figure) after voltage division provides the electric signal for the leakage processing chip (IC in the figure) of control module, the DC signal directly with the electromagnetic coil (KA in the figure) of the release and the thyristor (VT2 in the figure) of control module constitutes a loop (action loop);Normal state, thyristor is disconnected, and the action loop is not conducted;When the main circuit occurs leakage fault, the leakage processing chip detects the fault signal, triggers the thyristor conduction, then the action loop is conducted, and the electromagnetic coil of the release is energized, so that the release acts, thereby driving the operating mechanism of the switch to release.If the circuit breaker is wired correctly (i.e. positive connection - the incoming line end is connected to the power side lead and the outgoing line end is connected to the load side lead), the power point of the control module is the outgoing line end of the circuit breaker, and after the main circuit of the circuit breaker is disconnected, the power point has no voltage, and the leakage protection function stops working;But if the circuit breaker is reversely connected (i.e. reverse connection - the incoming line end is connected to the load side lead and the outgoing line end is connected to the power side lead), the power point becomes the incoming line end, and after the leakage protection main loop is disconnected when the leakage signal appears, the residual current protection power supply signal of the product still exists, the thyristor is continuously conducted and greater than the holding current of the thyristor, and under the continuous work of the high current signal, the thyristor will be blown off or the electromagnetic coil of the release will be burned off.

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

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

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

[0006] A power supply control mechanism, comprising a reset button having a latching position and 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 by the tripping lever and restore the latching 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, drive the tripping lever to move, drive an operating mechanism of the switch to trip, and unlatch the tripping lever with the reset button; the switch contact system is turned on or off when the reset button is in the latching position or the tripping position.

[0007] The switch contact system comprises a switch movable contact mechanism and a fixed switch static contact, the switch movable contact mechanism comprises a contact support linked with the reset button, a switch movable contact movably arranged on the contact support, and a switch movable contact spring respectively linked with the switch movable contact and the contact support to limit the switch movable contact and the contact support to keep relatively static; in the process of moving the reset button to the latching position, the switch movable contact mechanism is first driven to move to make the switch movable contact initially contact with the switch static contact, and then the contact support is driven to move relatively with the switch movable contact to store energy in the switch movable contact spring; in the process of moving the reset button to the tripping position, the switch movable contact spring releases energy to make the switch movable contact and the contact support restore the limit cooperation.

[0008] Further, the switch movable contact mechanism is rotatably arranged through the contact support, and the switch movable contact is rotatably arranged on the contact support; in the process of moving the reset button to the latching position, the switch movable contact mechanism is first driven to rotate to the switch movable contact initially contacting with the switch static contact through the contact support, and then the contact support and the switch movable contact are driven to rotate relatively to store energy in the switch movable contact spring.

[0009] Further, the switch movable contact spring is a torsion spring, which is sleeved on a rotating shaft of the switch movable contact; the switch movable contact is electrically connected with the contact support through the switch movable contact spring.

[0010] Further, the contact support comprises support side plates, a support connecting plate, and a movable contact limiting stop, two groups of the support side plates are oppositely and spacedly arranged, the support connecting plate is connected with 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 stop; one end of the switch movable contact is rotatably arranged between the two groups of the support side plates; the switch movable contact spring is linked with the switch movable contact and the contact support respectively to limit the switch movable contact and the movable contact limiting stop to keep the switch movable contact and the contact support relatively static.

[0011] Further, the switch moving contact spring is a double torsion spring, which comprises two single torsion spring parts, both of which are sleeved on the rotating shaft of the switch moving contact and located on both sides of the switch moving contact respectively, one spring arm of each single torsion spring part is matched with the moving contact and the other spring arm is connected and matched with the support connecting plate.

[0012] Further, the contact support further comprises a support wiring part arranged on one support side plate.

[0013] Further, the switch moving contact comprises a moving contact shaft hole, a moving contact point and spring limiting blocks, the moving contact shaft hole and the moving contact point are arranged at both ends of the switch moving contact in the length direction of the switch moving contact respectively, two spring limiting blocks are arranged on both sides of the switch moving contact in the rotating shaft direction of the switch moving contact respectively, one spring arm of each single torsion spring part is located on both sides of the switch moving contact and matched with the two spring limiting blocks respectively, and the other spring arms of the two single torsion spring parts are connected and matched with the support connecting plate.

[0014] Further, the power supply control mechanism further comprises a mechanism shell, the mechanism shell comprises a static contact mounting structure arranged on the first bottom wall thereof, the static contact mounting structure comprises a static contact hook, a first side baffle, a second side baffle and a static contact limiting block, the first side baffle and the second side baffle are arranged oppositely, the static contact hook and the static contact limiting block are arranged oppositely, the static contact hook 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;

[0015] The switch static contact comprises a static contact contact plate, a static contact intermediate plate and a static contact wiring plate, the static contact contact plate is used for closing and opening with the switch moving contact, one end of the static contact contact plate is connected with one end of the static contact intermediate plate by bending, the other end of the static contact contact plate is limited and matched with the static contact limiting block and abuts on the first bottom wall, the other end of the static contact intermediate plate is connected with the static contact wiring plate by bending and the static contact intermediate plate is coplanar with the static contact wiring plate; the static contact contact plate is located between the first side baffle and the second side baffle and is limited and matched with the first side baffle and the second side baffle respectively; the static contact wiring plate is opposite to the first bottom wall and abuts on the second side baffle, the hook arm abuts on the end of the static contact intermediate plate away from the static contact contact plate and the hook part is clamped on the side of the static contact intermediate plate away from the first bottom wall.

[0016] Further, the reset button is integrally arranged.

[0017] Further, the power supply control mechanism further comprises a transmission rod, one end of the transmission rod is rotationally connected with the reset button and the other end is rotationally connected with the contact support.

[0018] Furthermore, the power supply control mechanism also includes a mechanism shell, which includes a button mounting hole; the reset button r includes a button head, a button limiting portion, and a button locking portion. The button head is slidably arranged in the button mounting hole and one end protrudes outside the mechanism shell for external force operation. The button limiting portion and the mechanism shell limit cooperation to prevent the reset button from falling out. The extension direction of the button locking portion is perpendicular to the moving direction of the reset button. One end of the button locking portion is used to snap-fit ​​with the trip rod and the other end is rotatably connected to the transmission rod.

[0019] The power supply control mechanism of the utility model and its switch contact system can disconnect the power supply circuit of the thyristor and the release (that is, disconnect the action circuit) regardless of whether the switch electrical appliance is connected in the forward or reverse direction, and also ensure that the electromagnetic coil of the thyristor and the release will not be damaged due to the long-term passage of large current under leakage fault. Moreover, the arrangement of the switch moving contact mechanism and the switch static contact enables the switch moving contact and the switch static contact to be made of thicker metal materials, thereby increasing the current carrying capacity and arc burning resistance of the switch contact system, and secondly, it is conducive to improving the breaking capacity of the switch contact system.

[0020] In addition, the button drive part and the switch movable contact are matched in a simple manner and the transmission is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the switch electrical appliance of the utility model;

[0022] Figure 2 This is a structural diagram of the second half shell of the switch electrical appliance of the utility model;

[0023] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure of the S4 part;

[0024] Figure 4 This is a schematic diagram of the structure of the switch electrical appliance of the utility model, in which the first half shell and the second half shell are in a separated state;

[0025] Figure 5 This is a projection view of the power supply control mechanism of the switch electrical appliance of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the power supply control structure of the switch electrical appliance of the present invention;

[0027] Figure 7 This utility model Figure 6 Schematic diagram of the enlarged structure of the S5 part;

[0028] Figure 8 This is a projection view of the first half shell of the switch electrical appliance of the present invention;

[0029] Figure 9 It is the three-dimensional structure schematic view of the first half shell of the switch device of the utility model;

[0030] Figure 10 It is the enlarged structure schematic view of S6 part of the utility model Figure 9 ;

[0031] Figure 11 It is the cross section structure schematic view of the switch device of the utility model;

[0032] Figure 12 It is the structure schematic view of the reset button of the switch device of the utility model;

[0033] Figure 13 It is the structure schematic view of the switch moving contact mechanism of the switch device of the utility model;

[0034] Figure 14 It is the structure schematic view of the switch moving contact of the switch device of the utility model;

[0035] Figure 15 It is the structure schematic view of the contact support of the switch device of the utility model;

[0036] Figure 16 It is the structure schematic view of the switch moving contact spring of the switch device of the utility model;

[0037] Figure 17 It is the structure schematic view of the switch static contact of the switch device of the utility model;

[0038] Figure 18 It is the electrical schematic diagram of the circuit breaker with residual current protection function of prior art.

[0039] Explanation of reference signs

[0040] Leakage operation unit c;

[0041] Reset button r, button head r1, button avoiding slot r11, button connecting side wall r12, button guiding side wall r13, button bottom wall r14, button limiting part r2, button lock catch part r3, button lock catch end r31, button connecting hole r32;

[0042] Switch contact system a; switch movable contact mechanism 1, switch movable contact 1-1, movable contact 1-15, movable contact shaft hole 1-16, 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, movable contact limiting stop 1-24, switch movable contact spring 1-3, single torsional spring part 1-31, spiral body 1-311, first torsional spring arm 1-312, second torsional spring arm 1-313, connecting section 1-32; switch static contact mechanism 2, switch static contact 2-1, static contact contact plate 2-11, static contact intermediate plate 2-12, static contact wiring plate 2-14, static contact wiring hole 2-15;

[0043] Tripping lever 3, tripping lever mounting portion 3-2, tripping lever cooperation plate 3-1;

[0044] Tripping device 4, coil assembly 4-1, top rod 4-2;

[0045] Zero sequence current transformer 5;

[0046] Transmission lever 6;

[0047] Housing h, first half housing h1, button mounting hole h1-1, button head guide groove h1-11, button limiting plate h1-2, drive portion guide groove h1-3, static contact mounting structure h1-4, static contact limiting stop h1-43, static contact hook h1-44, first side stop plate h1-45, second side stop plate h1-46, static contact stop table h1-47, movable contact spring column h1-5, movable contact mounting shaft h1-6, tripping device mounting groove h1-7, first tripping lever shaft hole h1-8;Second half housing h2, drive portion guide rib h2-3, movable contact limiting column h2-6, second tripping lever shaft column h2-8, second tripping lever shaft hole h2-80;Housing guide hole h3;

[0048] Circuit breaking unit b. DETAILED DESCRIPTION

[0049] The following examples, combined with the drawings, further illustrate the specific embodiments of the switch device of the utility model. The switch device of the utility model is not limited to the description of the following examples.

[0050] As Figures 1-17 shown, it is an embodiment of the switch device of the utility model, and the switch device of the embodiment is preferably a circuit breaker, specifically a circuit breaker with residual current protection function.

[0051] As Figure 1 , 4As shown, the switch device of the embodiment comprises an electric leakage operating unit c and at least one set of circuit breaking unit b; the circuit breaking unit b comprises an operating mechanism (i.e. the operating mechanism of the switch device) and a main contact system, the circuit where the main contact system is located is a main circuit, the main contact system comprises a main movable contact and a main static contact used in cooperation, the operating mechanism is in transmission connection with the main movable contact for driving the main movable contact to close and open the main static contact, the operating mechanism is preferably realized by the prior art, for example, the operating mechanism with four-bar linkage structure, which will not be described here; the electric leakage operating unit c comprises a control module and a trip device 4, when the circuit where the circuit breaking unit b is located has an electric leakage fault, the control module controls the trip device 4 to act according to a signal (i.e. an electric leakage fault signal), the trip device 4 drives the operating mechanism to trip, so that the switch device of the embodiment is tripped and opened. Further, the signal can also be a remote opening signal, that is, after the control module receives the remote opening signal, the control module controls the trip device 4 to act, the trip device 4 drives the operating mechanism to trip, so that the switch device of the embodiment is tripped and opened, that is, the electric leakage operating unit c can also realize the remote opening function. Further, the switch device of the embodiment comprises two or more circuit breaking units b, each circuit breaking unit b comprises a main contact system, each circuit breaking unit b can comprise an operating mechanism independent of each other, each operating mechanism can be operated synchronously to close and open through a linkage structure (for example, a linkage handle), and each operating mechanism is driven by the trip device 4 to trip; or, each circuit breaking unit b shares a set of operating mechanisms, and the main movable contact of the main contact system of each circuit breaking unit b is in transmission connection with the operating mechanism. Further, the switch device of the embodiment further comprises a zero sequence current transformer 5, the zero sequence current transformer 5 comprises an induction coil, and the circuit breaking unit b comprises a conductor in series with the main contact system and passing through the zero sequence current transformer 5.

[0052] 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.

[0053] Specifically, as shown in Figure 1 、 4 , 11, 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.

[0054] Specifically, as shown in Figures 4-9 , 11-12, the reset button r is integrally arranged, preferably linearly slidably arranged. 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 slidably arranged in the button mounting hole h1-1 and protrudes from the mechanism housing at one end for external force operation. Further, the first half housing h1 is provided with a button head sliding groove, and the second half housing h2 is provided with a button head limiting column, the button head limiting column is inserted into the button head sliding groove to form the button mounting hole h1-1.

[0055] Specifically, as shown in Figures 2-7, 11, the trip lever 3 is rotatably arranged. Further, the trip lever 3 comprises a trip lever mounting portion 3-2 and a trip lever cooperation plate 3-1, the trip lever mounting portion 3-2 is arranged on one end of the trip lever cooperation plate 3-1, the trip lever 3 is rotatably arranged through the trip lever mounting portion 3-2, the trip lever cooperation plate 3-1 is connected in transmission with the trip unit 4 and is snap-fitted with the reset button r. Further, the trip unit 4 comprises a coil assembly 4-1 and a top rod 4-2, one end of the top rod 4-2 is movably arranged in the coil assembly 4-1 and the other end is connected in transmission with the trip lever cooperation plate 3-1, the transmission mode and the connection mode of the top rod 4-2 and the trip lever cooperation plate 3-1 can be realized by the prior art, which will not be described here. Further, the trip lever cooperation plate 3-1 comprises a trip lever 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 lever snap hole to realize the snap-fitting of the trip lever 3 and the reset button r; the trip lever 3 is rotated under the drive of the trip unit 4, the button lock portion r3 is unlocked from the trip lever snap hole, so that the trip lever 3 and the reset button r are disengaged from the snap-fitting. It should be pointed out that the trip lever 3 is not limited to be rotatably arranged, for example, the trip lever 3 can also be linearly movably arranged, the trip lever 3 moves to the first direction to disengage from the snap-fitting with the reset button r, the reset button r moves to the snap-fitting position to drive the trip lever 3 to move to the second direction, so that the reset button r and the trip lever 3 restore the snap-fitting, at the same time, the trip unit 4 is reset by the trip lever 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 lever shaft hole h1-8, the second half shell h2 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, both ends of the rotating shaft of the trip lever 3 are rotatably arranged in the first trip lever shaft hole h1-8 and the second trip lever 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.

[0056] Further, the switch apparatus of the embodiment further comprises a button spring, the button spring acts on the reset button r to make it have a tendency to move to the trip-fitting position, that is, after the reset button r is disengaged from the snap-fitting with the trip lever 3, the button spring drives the reset button r to move from the snap-fitting position to the trip-fitting position, when the reset button r moves to the snap-fitting position, the action force of the button spring needs to be overcome and the button spring needs to store energy.

[0057] As Figures 4-7,11, the switch electric appliance further comprises a power supply control mechanism, the power supply control mechanism comprises 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 be latched with the tripping lever 3 in the latching position, to move to the tripping position after the latching with the tripping lever 3 is released, and to drive the tripping device 4 to reset through the tripping lever 3 and restore the latching with the tripping lever 3 when moving from the tripping position to the latching position, that is, the reset button r is latched with the tripping lever 3 in the latching position, moves to the tripping position after the latching with the tripping lever 3 is released, and restores the latching with the tripping lever 3 when moving from the tripping position to the latching position through the tripping lever 3 to drive the tripping device 4 to reset; the control module is used to take power from a main circuit of the switch electric appliance and 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 (that is, the operating mechanism of the breaking unit b in the foregoing) of the switch electric appliance to trip and release the latching of the tripping lever 3 with 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 tripping position, that is, the switch contact system a is turned on (that is, the switch contact system a is in an on state) when the reset button r is in the latching position, so as to turn on a connecting circuit for connecting the control module and the tripping device 4, and the switch contact system a is turned off (that is, the switch contact system a is in an off state) when the reset button r is in the tripping position, so as to turn off the connecting circuit for connecting the control module and the tripping device 4.

[0058] In the switch electric appliance, 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 tripping device 4 to act after receiving a signal, the tripping device 4 drives the operating mechanism of the switch electric appliance to trip through the tripping lever 3, and the switch electric appliance is tripped, so that the main circuit is turned off, and the thyristor and the electromagnetic coil of the tripping device 4 will not be damaged due to passing through a large current (greater than the holding current of the thyristor) for a long time in the case of an electric leakage fault, and the switch contact system a can turn off the power supply circuit (that is, the actuation loop is turned off) of the thyristor and the tripping device 4 whether the switch electric appliance is connected in forward direction or reverse direction, so as to also ensure that the thyristor and the electromagnetic coil of the tripping device 4 will not be damaged due to passing through a large current for a long time in the case of an electric leakage fault.

[0059] As Figures 5-7As shown, the switch contact system a comprises a switch movable contact mechanism 1 and a switch static contact mechanism 2 linked with the reset button r, the switch movable contact mechanism 1 comprises a switch movable contact 1-1, the switch static contact mechanism 2 comprises a switch static contact 2-1, the switch movable contact mechanism 1 is closed and opened with the switch static contact 2-1 through the switch movable contact 1-1; during the process that the reset button r moves to the latching position, that is, during the process that the reset button r moves from the tripping position to the latching position, the switch movable contact mechanism 1 is driven to move so as to close the switch movable contact 1-1 and the switch static contact 2-1; the reset button r moves to the tripping position, the switch movable contact mechanism 1 is driven to move so as to open the switch movable contact 1-1 and the switch static contact 2-1; the switch movable contact 1-1 and the switch static contact 2-1 are rigid structures.

[0060] The switch movable contact 1-1 and the switch static contact 2-1 are arranged in the above manner and are rigid structures, which can make the switch movable contact 1-1 and the switch static contact 2-1 be made of thick metal materials, thereby increasing the current carrying capacity and arc resistance of the switch contact system a, and also facilitating to improve the breaking capacity of the switch contact system a.

[0061] Further, the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive when or before the reset button r moves to the latching position, that is, the moment when the switch movable contact 1-1 and the switch static 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 switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive is before the moment when the reset button r moves to the latching position. Further, the switch movable contact 1-1 and the switch static contact 2-1 are in contact and conductive before the reset button r moves to the latching position, thereby ensuring that the switch movable contact 1-1 and the switch static contact 2-1 are reliably closed when the reset button r resets the tripping device 4 through the tripping lever 3. Further, the reset button r is in the middle position of the button when the switch movable contact 1-1 and the switch static contact 2-1 are initially in contact, during the process that the reset button r continues to move to the latching position, that is, during the process that the reset button r moves from the middle position of the button to the latching position, the switch movable contact mechanism 1 and / or the switch static contact 2-1 are driven to move by the reset button r and the switch movable contact 1-1 and the switch static contact 2-1 remain in the conductive state, that is, during the process that the reset button r moves from the middle position of the button to the latching position, the switch movable contact mechanism 1 and the switch static contact 2-1 remain in the contact and conductive state, one of the switch movable contact mechanism 1 and the switch static contact 2-1 is driven to move by the reset button r and the other remains static, or both of the switch movable contact mechanism 1 and the switch static contact 2-1 are driven to move by the reset button r, thereby ensuring that the switch contact system a is reliably closed and the reset button r can move to the latching position to restore the latching cooperation with the tripping lever 3 and reset the tripping device 4.

[0062] Further, the reset button r further comprises a button limiting portion r2 and a button locking portion r3. The button limiting portion r1 is in limiting cooperation 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 portion r3 is used to be in snap cooperation with the tripping lever 3. Further, the extension direction of the button locking portion r3 is perpendicular to the moving direction of the reset button r. Further, the button head r1, the button limiting portion r2 and the button locking portion r3 are sequentially connected.

[0063] As shown in Figure 2 , 4 -9, 11-12, which is one assembly mode of the reset button r and the mechanism shell:

[0064] The button head r1 comprises a button avoiding slot r11, a button first side wall r12, a button bottom wall r14 and a button second side wall r13 which are sequentially arranged around the button avoiding slot r11. The button first side wall r12 is connected with the button limiting portion r2. The mechanism shell further comprises a button limiting plate h1-2 which is arranged in the inner end of the button mounting hole h1-1. One end of the button limiting plate h1-2 is connected with the side wall of the button mounting hole h1-1 and the other end is inserted into the button avoiding slot r11. The button limiting plate h1-2 is opposite to the button bottom wall r14. The button spring is a compression spring which is arranged in the button avoiding slot r11 and cooperates with the button limiting plate h1-2 and the button bottom wall r14 at both ends. A pair of side edges of the button limiting plate h1-2 are respectively provided with a button head guide slot h1-11 between the pair of side walls of the button mounting hole r1-1. The button first side wall r12 and the button second side wall r13 are respectively arranged in the two button head guide slots h1-11. The button limiting portion r2 and the button limiting plate h1-2 are in limiting cooperation to limit the reset button r in the tripping position. The button limiting portion r2 and the button spring / button bottom wall r14 are respectively located on both sides of the button limiting plate h1-2 in the moving direction of the reset button r.

[0065] As shown in Figures 5-7 , in the power supply control mechanism of the switch electric appliance, the fixed switch static contact 2-1 is arranged. The position of the reset button r when the switch movable contact 1-1 and the switch static contact 2-1 initially contact is the button intermediate position. In the process of the reset button r moving from the button intermediate position to the snap position, the switch movable contact mechanism 1 moves under the drive of the reset button r, the switch static contact 2-1 remains stationary, and the switch movable contact mechanism 1 and the switch static contact 2-1 remain in the contact-on state.

[0066] Further, as shown in Figures 5-7As shown, the switch moving contact mechanism 1 includes a switch moving contact 1-1, a contact support 1-2 and a switch moving contact spring 1-3. The switch moving contact structure 1 is rotated by the contact support 1-2, and the switch moving contact 1-1 is movably set on the contact support 1-2. The switch moving contact spring 1-3 cooperates with the switch moving contact 1-1 and the contact support 1-2 respectively, so that the switch moving contact 1-1 and the contact support 1-2 are limited and matched to remain relatively stationary; in the process of the reset button r moving from the tripped position to the middle position of the button, the contact support 1-2 is driven to rotate and drive the switch moving contact 1-1 to initially contact with the switch static contact 2-1, and then in the process of the reset button r moving from the middle position of the button to the latched position, the contact support 1-2 is driven to rotate relative to the switch moving contact 1-1 to make the switch The moving contact spring 1-3 stores energy, that is, in the process of the reset button r moving from the middle position of the button to the latch position, the contact support 1-2 and the switch moving contact 1-1 are driven to move relative to each other, and the contact support 1-2 and the switch moving contact 1-1 move relative to each other while the switch moving contact 1-3 stores energy; in the process of the reset button r moving from the middle position of the button to the tripped position, the switch moving contact spring 1-3 releases energy to make the switch moving contact 1-1 and the contact support 1-2 move relative to each other and restore the limit fit, that is, in the process of the reset button r moving from the middle position of the button to the tripped position, first the switch contact spring 1-3 releases energy to make the switch moving contact 1-1 and the contact support 1-2 move relative to each other and restore the limit fit, and then the switch moving contact mechanism 1 moves as a whole to and is disconnected from the switch static contact 2-1.

[0067] Specifically, such as Figures 5-7 , 13-16 show an embodiment of the moving contact mechanism 1:

[0068] The switch movable contact mechanism 1 is rotationally arranged. Further, the switch movable 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 movable contact limiting stops 1-24. Two groups of support side plates 1-21 are arranged at intervals. The support connecting plates 1-22 are 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 movable contact limiting stop 1-24. The switch movable contact 1-1 is rotationally arranged between the two groups of support side plates 1-21. The switch movable contact spring 1-3 acts on the switch movable contact 1-1 to limit the switch movable contact 1-1 with the movable contact limiting stop 1-24, so that the switch movable contact 1-1 and the contact support 1-2 remain relatively stationary. That is, when the switch movable contact mechanism 1 moves as a whole, the switch movable contact 1-1 and the contact support 1-2 remain relatively stationary. 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 connect with a wire to connect the switch movable contact mechanism 1 into the 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 made of a metal plate by cutting and bending, thereby improving the integrity and firmness of the structure of the contact support 1-2.

[0069] Further, the switch movable contact 1-1 and the contact support 1-2 are coaxially rotationally arranged. Further, the switch movable contact 1-1 comprises a movable 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 switch movable contact 1-1 is rotationally arranged on the same shaft (for example, the movable contact mounting shaft h1-6 of the first half shell h1) through the movable contact shaft hole 1-16 and the contact support 1-2 through the support shaft hole 1-21. Further, the movable contact shaft hole 1-16 and the movable contact 1-15 are respectively arranged at both ends of the switch movable contact 1-1 in the length direction of the switch movable contact 1-1. Further, the first half shell h1 of the mechanism shell comprises a movable contact mounting shaft h1-6 arranged on the first bottom wall thereof. The second half shell h2 of the mechanism shell further comprises a movable contact limiting column h2-6. One end of the movable contact mounting shaft h1-6 is connected to the first bottom wall. The movable contact limiting column h2-6 abuts on the other end of the movable contact mounting shaft h1-6. The outer diameter of the movable contact limiting column h2-6 is greater than the inner diameter of the support shaft hole 1-21, thereby reliably limiting the switch movable contact mechanism 1 on the movable contact mounting shaft h1-6.

[0070] Furthermore, the switch movable contact spring 1-3 is a torsion spring, which is mounted on the rotating shaft of the switch movable contact 1-1. The switch movable contact 1-1 is electrically connected to the contact support 1-2 through the switch movable contact spring 1-3. Furthermore, the switch movable contact spring 1-3 is a double torsion spring, which includes two single torsion spring portions 1-31 arranged opposite each other. The two single torsion spring portions 1-31 are both mounted on the rotating shaft of the switch movable contact 1-1 (for example, the two single torsion spring portions 1-31 are each mounted on the rotating shaft of the switch movable contact 1-1 through their own spiral bodies 1-311) and are respectively located on both sides of the switch movable contact 1-1. One spring arm of the two single torsion spring portions 1-31 cooperates with the movable contact 1-1, and the other spring arm is connected and cooperates with the support connecting plate 1-22. Furthermore, the switch moving contact 1-1 also includes a spring limit block 1-19, and the two spring limit blocks 1-19 are respectively arranged on both sides of the switch moving contact 1-1 in the direction of the rotation axis of the switch moving contact 1-1. One spring arm (first torsion spring arm 1-312) of the two single torsion spring parts 1-31 is respectively located on both sides of the moving contact 1-1 and respectively cooperates with the two spring limit blocks 1-19, and the other spring arm (second torsion spring arm 1-131) of the two single torsion spring parts 1-31 is connected (for example, connected through the connecting section 1-32) and cooperates with the supporting connecting plate 1-22.

[0071] As another embodiment of the switch movable contact mechanism 1, the switch movable contact mechanism 1 is rotatably arranged by the contact support 1-2, and the switch movable contact 1-1 is integrally movably arranged on the contact support 1-2.

[0072] As another embodiment of the switch movable contact mechanism 1, the switch movable contact mechanism 1 is linearly movable by the contact support 1-2. That is, the switch movable contact mechanism 1 closes and opens with the switch static contact 2-1 through linear reciprocating movement. Furthermore, the switch movable contact 1-1 can be linearly movable or rotationally mounted on the contact support 1-2.

[0073] like Figures 4-7 , 12-13, and 15 show the implementation method of the linkage between the reset button r and the switch moving contact mechanism 1: the power supply control mechanism also includes a transmission rod 6, through which the reset button r is transmission-connected to the contact support 1-2. One end of the transmission rod 6 is transmission-connected to the reset button r and the other end is rotationally connected to the contact support 1-2. That is, when the reset button r switches between the tripped position and the latched position, the transmission rod 6 drives the switch moving contact mechanism 1 to rotate back and forth to close and open with the switch static contact 2-1. Furthermore, one end of the support side plate 1-21 of the contact support 1-2 is provided with a support connection hole 1-212. The support connection hole 1-212 and the support shaft hole 1-211 are respectively provided at both ends of the support side plate 1-21. The transmission rod 6 is rotationally connected to the support side plate 1-21 through the support connection hole 1-212.

[0074] Furthermore, the transmission rod 6 is a U-shaped transmission rod.

[0075] Furthermore, the first half-shell h1 of the mechanism housing includes a drive guide groove h1-3, and the second half-shell h2 includes a drive guide rib h2-3. The drive guide rib h2-3 is inserted into the drive guide groove h1-3 to form a housing guide hole h3 for the transmission rod 6 to pass through. This limits the transmission rod 6 and prevents excessive swing during operation that could compromise the reliable fit between the transmission rod 6 and the switch moving contact 1-1, as well as the structure of the transmission rod 6 itself. Furthermore, as shown in the figure, in the second half-shell h2, the second trip rod shaft h2-8, the moving contact limiting post h2-6, and the drive guide rib h2-3 are each connected to each other by reinforcing ribs to enhance structural strength.

[0076] In the switch of this embodiment, the reset button r has a button lock portion r3 on one end for snap-fitting with the trip rod 3 and a second end for rotationally connecting with the transmission rod 6. Furthermore, the button lock portion r3 has a button lock end r31 on one end for snap-fitting with the trip rod 3 and a button connection hole r32 on the other end for rotationally inserting the transmission rod 6 therein.

[0077] As another embodiment of the linkage between the reset button r and the switch moving contact mechanism 1, the reset button r is provided with a button driving part r4, and the power supply control mechanism includes a second reset member acting on the contact support 1-2; when the reset button r moves to the latched position, the button driving part r4 presses against the contact support 1-2 to rotate the switch moving contact mechanism 1, thereby closing the switch moving contact 1-1 and the switch static contact 2-1; when the reset button r moves to the tripped position, the button driving part r4 avoids the contact support 1-2, and the second reset member drives the switch moving contact mechanism 1 to rotate, thereby disconnecting the switch moving contact 1-1 and the switch static contact 2-1.

[0078] Specifically, such as Figures 8-10 , 17, is a method for implementing the fixed arrangement of the switch static contact 2:

[0079] The switch static contact 2 - 1 cooperates with the static contact mounting structure h1 - 4 to achieve a fixed setting.

[0080] Further, the static contact mounting structure h1-4 comprises a static contact hook h1-44, a first side baffle h1-45, a second side baffle h1-46 and a static contact limiting stop h1-43, the first side baffle h1-45 and the second side baffle h1-46 are oppositely arranged, the static contact hook h1-44 and the static contact limiting stop h1-43 are oppositely arranged, the static 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 switch static contact 2-1 comprises a static contact contact plate 2-11, a static contact intermediate plate 2-12 and a static contact wiring plate 2-14, the static contact contact plate 2-11 is used for closing and opening with the switch moving contact 1-1, one end of the static contact contact plate 2-11 is connected with one end of the static contact intermediate plate 2-12 by bending, the other end of the static contact contact plate 2-11 is limited and matched with the static contact limiting stop h1-43 and abuts on the first bottom wall, the other end of the static contact intermediate plate 2-12 is connected with the static contact wiring plate 2-14 by bending and the static contact intermediate plate 2-12 is coplanar with the static contact wiring plate 2-14; the static 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 static 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 static contact intermediate plate 2-12 away from the static contact contact plate 2-11 and the hook part is clamped on the side of the static contact intermediate plate 2-12 away from the first bottom wall. Further, the static contact mounting structure h1-4 further comprises a static contact stop table h1-47, the static 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 static contact contact plate 2-11 (i.e. the end of the static contact contact plate 2-11 abutting on the first bottom wall) is inserted between the static contact stop table h1-47 and the static contact limiting stop h1-43 and is limited and matched with the two respectively, further improving the installation reliability and stability of the switch static contact 2-1. Further, the static contact wiring plate 2-14 and the static contact intermediate plate 2-12 are integrally formed as an L-shaped plate structure.

[0081] As other embodiments of the static contact mounting structure h1-4, the static contact mounting structure h1-4 does not arrange the static 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 static contact contact plate 2-11.

[0082] 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 shown in the drawings or the orientation or positional relationship commonly used 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, so it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0083] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the scope of protection of the present application.

Claims

1. A power supply control mechanism, comprising a reset button (r) having a tripping position and a latching position, a tripping rod (3), a tripping device (4), a control module electrically connected to the tripping device (4) through a connecting circuit, and a switch contact system (a) connected in series in the connecting circuit; the reset button (r) is used to latch with the tripping rod (3) in the latching position, move to the tripping position after releasing the latching engagement with the tripping rod (3), and drive the tripping device (4) to reset and restore the latching engagement of the tripping rod (3) when moving from the tripping position to the latching position; the control module is used to draw power from the main circuit of the switch electrical appliance and control the tripping device (4) to operate according to a signal; the tripping rod (3) is driven by the tripping device (4) to move, and is used to drive the operating mechanism of the switch electrical appliance to trip and release the latching engagement of the tripping rod (3) and the reset button (r); when the reset button (r) is in the latching position or the tripping position, the switch contact system (a) is turned on or off; Its characteristics are: The switch contact system (a) comprises a switch moving contact mechanism (1) and a fixed switch static contact (2-1), wherein the switch moving contact mechanism (1) comprises a contact support (1-2) linked to a reset button (r), a switch moving contact (1-1) movably arranged on the contact support (1-2), and a switch moving contact spring (1-3) respectively cooperating with the switch moving contact (1-1) and the contact support (1-2) to limit the switch moving contact (1-1) and the contact support (1-2) and keep the switch moving contact (1-1) and the contact support (1-2) relatively stationary; During the movement of the reset button (r) to the latched position, the switch movable contact mechanism (1) is first driven to move so that the switch movable contact (1-1) and the switch static contact (2-1) are initially in contact, and then the contact support (1-2) and the switch movable contact (1-1) are driven to move relative to each other and the switch movable contact spring (1-3) is caused to store energy; during the movement of the reset button (r) to the tripped position, the switch movable contact spring (1-3) releases energy so that the switch movable contact (1-1) and the contact support (1-2) are restored to limit engagement.

2. The power supply control mechanism according to claim 1, characterized in that: The switch moving contact mechanism (1) is rotatably arranged by the contact support (1-2), and the switch moving contact (1-1) is rotatably arranged on the contact support (1-2); when the reset button (r) moves to the latch position, the switch moving contact mechanism (1) is first driven by the contact support (1-2) to rotate until the switch moving contact (1-1) is initially in contact with the switch static contact (2-1), and then the contact support (1-2) and the switch moving contact (1-1) are driven to rotate relative to each other, and the switch moving contact spring (1-3) is caused to store energy.

3. The power supply control mechanism according to claim 2, characterized in that: The switch moving contact spring (1-3) is a torsion spring, which is sleeved on the rotating shaft of the switch moving contact (1-1); the switch moving contact (1-1) is electrically connected to the contact support (1-2) via the switch moving contact spring (1-3).

4. The power supply control mechanism according to claim 3, characterized in that: The contact support (1-2) comprises a supporting side plate (1-21), a supporting connecting plate (1-22) and a moving contact limit stop (1-24); two groups of supporting side plates (1-21) are arranged relative to each other at intervals; two ends of the supporting connecting plate (1-22) are respectively bent and connected to the two groups of supporting side plates (1-21); at least one supporting side plate (1-21) is provided with a moving contact limit stop (1-24); one end of the switch moving contact (1-1) is rotatably arranged between the two groups of supporting side plates (1-21); the switch moving contact spring (1-3) is respectively matched with the switch moving contact (1-1) and the contact support (1-2) so that the switch moving contact (1-1) and the moving contact limit stop (1-24) are limitedly matched so that the switch moving contact (1-1) and the contact support (1-2) remain relatively stationary.

5. The power supply control mechanism according to claim 4, characterized in that: The switch movable contact spring (1-3) is a double torsion spring, comprising two relatively single torsion spring parts (1-31), the two single torsion spring parts (1-31) being sleeved on the rotating shaft of the switch movable contact (1-1) and respectively located on both sides of the switch movable contact (1-1), one spring arm of the two single torsion spring parts (1-31) cooperating with the movable contact (1-1), and the other spring arm being connected and cooperating with the supporting connecting plate (1-22).

6. The power supply control mechanism according to claim 4, characterized in that: The contact support (1-2) further includes a support wiring portion (1-23) arranged on a support side plate (1-21).

7. The power supply control mechanism according to claim 5, characterized in that: The switch moving contact (1-1) comprises a moving contact shaft hole (1-16), a moving contact point (1-15) and a spring limit block (1-19); the moving contact shaft hole (1-16) and the moving contact point (1-15) are respectively arranged at two ends of the switch moving contact (1-1) in the length direction of the switch moving contact (1-1); the two spring limit blocks (1-19) are respectively arranged on both sides of the switch moving contact (1-1) in the rotation axis direction of the switch moving contact (1-1); one spring arm of the two single torsion spring parts (1-31) is respectively located on both sides of the switch moving contact (1-1) and respectively cooperates with the two spring limit blocks (1-19); the other spring arms of the two single torsion spring parts (1-31) are connected and cooperate with the supporting connection plate (1-22).

8. The power supply control mechanism according to claim 1, characterized in that: The power supply control mechanism further includes a mechanism housing, the mechanism housing includes a static contact mounting structure (h1-4) arranged on the first bottom wall thereof, the static contact mounting structure (h1-4) includes a static contact hook (h1-44), a first side baffle (h1-45), a second side baffle (h1-46) and a static contact limit block (h1-43), the first side baffle (h1-45) and the second side baffle (h1-46) are arranged opposite to each other, the static contact hook (h1-44) and the static contact limit block (h1-43) are arranged opposite to each other, the static contact hook (h1-44) includes a hook arm and a hook portion, one end of the hook arm is connected to the first bottom wall and the other end is connected to the hook portion; The switch static contact (2-1) comprises a static contact plate (2-11), a static contact intermediate plate (2-12) and a static contact wiring plate (2-14); the static contact plate (2-11) is used to close and open with the switch moving contact (1-1); one end of the static contact plate (2-11) is bent and connected to one end of the static contact intermediate plate (2-12); the other end of the static contact plate (2-11) is limitedly matched with the static contact limit stop (h1-43) and abuts against the first bottom wall; the other end of the static contact intermediate plate (2-12) is bent and connected to the static contact wiring plate (2-14); and the static contact intermediate plate (2-12) is bent and connected to the static contact wiring plate (2-14). 12) is coplanar with the static contact terminal plate (2-14); the static contact contact plate (2-11) is located between the first side baffle (h1-45) and the second side baffle (h1-46) and is respectively limitedly matched with the first side baffle (h1-45) and the second side baffle (h1-46); the static contact terminal plate (2-14) is opposite to the first bottom wall and abuts against the second side baffle (h1-46), the hook arm abuts against an end of the static contact intermediate plate (2-12) away from the static contact contact plate (2-11), and the hook portion is clamped on the side of the static contact intermediate plate (2-12) away from the first bottom wall.

9. The power supply control mechanism according to claim 1, characterized in that: The reset button (r) is arranged to move as a whole.

10. The power supply control mechanism according to claim 9, characterized in that: The power supply control mechanism further comprises a transmission rod (6), one end of which is rotationally connected to the reset button (r) and the other end of which is rotationally connected to the contact support (1-2).

11. The power supply control mechanism according to claim 10, characterized in that: The power supply control mechanism further comprises a mechanism shell, which comprises a button mounting hole (h1-2); the reset button r 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 protrudes outside the mechanism shell for external force operation; the button limiting portion (r2) cooperates with the mechanism shell to prevent the reset button (r) from falling out; the extension direction of the button locking portion (r3) is perpendicular to the moving direction of the reset button (r); one end of the button locking portion (r3) is used for snap-fitting with the tripping rod (3) and the other end is rotatably connected to the transmission rod (6).

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