Reset control assembly and reset switch

Abstract

The present invention provides a reset control component, comprising: a shell, which is vertically penetrated by a rotating shaft; a limit wheel, which is installed in the shell and vertically penetrated by the rotating shaft and rotates with the rotating shaft; an advance and retreat mechanism, which has an advance and retreat rod that cooperates with the limit wheel and can limit the limit wheel through advance and retreat movement; a signal input mechanism, which is connected to an external control signal circuit and is used to receive a control signal; and a reset mechanism, which is used to control the movement of the advance and retreat mechanism according to the control signal to release the limit of the rotating shaft; wherein, the outer circumferential surface of the limit wheel is provided with a groove that cooperates with the advance and retreat rod, and the reset mechanism has an electromagnetic unit electrically connected to the signal input mechanism and a metal block inserted into the electromagnetic unit, and when the signal input mechanism receives the control signal, the electromagnetic unit is energized to cause the metal block to generate electromagnetic force and drive the advance and retreat rod to move in a direction away from the limit wheel, so that the advance and retreat rod exits the groove and releases the limit of the limit wheel and the rotating shaft, thereby resetting the rotating shaft.

Description

Technical Field

[0001] The invention belongs to the technical field of switches, and in particular relates to a reset control component and a reset switch. Background Art

[0002] In order to meet the needs of fast switching of the states of some control circuits, a reset switch is installed in these control circuits to control the control circuits. When the reset switch is turned from the initial position to the predetermined position by the user, the on-off state of the control circuit can be switched. This state switching is achieved by the user turning the handle of the reset switch. When resetting the reset switch, the user can control the reset switch to quickly restore the initial position through the reset button, thereby quickly switching the on-off state of the control circuit.

[0003] However, when the user manually presses the reset button to reset the reset switch, the speed of the control circuit on and off is not constant due to human influence, which cannot meet the needs of the actual circuit. For example, when the circuit fails, an emergency reset operation is required to disconnect the circuit as quickly as possible. At this time, manual reset may be dangerous and may even cause a circuit fire. Summary of the invention

[0004] In order to solve the above problems, a reset control component and a reset switch are provided to realize the rapid switching of the control circuit on and off by means of electric control. The present invention adopts the following technical solutions:

[0005] The present invention provides a reset control component for limiting and resetting a rotating shaft in a reset switch, and is characterized in that it comprises: a shell body, which is vertically penetrated by the rotating shaft; a limit wheel, which is installed in the shell body, is vertically penetrated by the rotating shaft, and rotates with the rotating shaft; an advance and retreat mechanism, which has an advance and retreat rod that cooperates with the limit wheel and can limit the limit wheel by advance and retreat movement; a signal input mechanism, which is connected to an external control signal circuit and is used to receive a control signal; and a reset mechanism, which is used to control the movement of the advance and retreat mechanism according to the control signal to release the limit of the rotating shaft; wherein, the outer circumferential surface of the limit wheel has a groove that cooperates with the advance and retreat rod, and the reset mechanism has an electromagnetic unit electrically connected to the signal input mechanism and a metal block inserted into the electromagnetic unit, and when the signal input mechanism receives the control signal, the electromagnetic unit is energized to cause the metal block to generate electromagnetic force and drive the advance and retreat rod to move in a direction away from the limit wheel, so that the advance and retreat rod exits the groove and releases the limit of the limit wheel and the rotating shaft, thereby resetting the rotating shaft.

[0006] The reset control component provided by the present invention may also have such a feature, wherein the electromagnetic unit has a coil seat and a coil wound on the coil seat, the coil seat has a through hole in the center, the metal block includes two M-shaped parts, which are inserted into the through hole from both sides of the coil seat respectively, and the coil is electrically connected to the signal input mechanism.

[0007] The reset control component provided by the present invention may also have such a feature, wherein the metal block includes a first metal block and a second metal block, the first metal block and the second metal block are of the same shape and size, are M-shaped as a whole, are horizontally opposed to each other, have a first column foot extending vertically in the middle, and have second column feet and third column feet extending vertically on both sides, the first metal block is fixed to the bottom of the shell, and the second metal block can move along the extension direction of the first column foot of the second metal block.

[0008] The reset control assembly provided by the present invention may also have the following features, including: an emergency reset mechanism, which is installed on the surface of the shell and is used to manually reset the rotating shaft. A retract rod base is provided at the position where the advance and retreat rod is connected to the metal block. The advance and retreat base has a base slope that is at an angle of 45° to the advance and retreat rod. The emergency reset mechanism has a reset button and a spring. The reset button is installed on the surface of the shell and has a pressing portion for pressing and a reset convex portion. The reset convex portion extends from the pressing portion to the inside of the shell and has a reset slope corresponding to the inclined surface of the machine base. The reset slope is at an angle of 45° to the pressing portion. By pressing the reset button, the advance and retreat rod base drives the metal block and the advance and retreat rod to move, so that the advance and retreat rod withdraws from the groove, thereby resetting the rotating shaft.

[0009] The reset control assembly provided by the present invention may also have such a feature, wherein the advance and retreat mechanism also has an elastic element, one end of the elastic element is connected to the shell, and the other end is connected to the advance and retreat rod and provides pressure toward the limiting wheel to the advance and retreat rod. Under the action of this pressure, the advance and retreat rod is inserted into the groove to achieve the limitation of the limiting wheel and the rotating shaft.

[0010] The reset control component provided by the present invention may also have such a feature, wherein the signal input mechanism is installed at the bottom of the shell and has pins, which connect the coil and the control signal circuit. Once the control signal circuit is energized, the electromagnetic unit is energized to generate electromagnetic force.

[0011] The reset control assembly provided by the present invention may also have such a feature, wherein the outer circumferential surface of the limiting wheel has a first arc edge and a second arc edge, the radius of the first arc edge is greater than the radius of the second arc edge, the second arc edge is connected to the first arc edge through a first straight edge and a second straight edge respectively, the angle between the first straight edge and the first arc edge and the second arc edge is an acute angle, the second straight edge is tangent to the second arc edge, and the groove is arranged on the first arc edge near the second straight edge. The reset control assembly provided by the present invention may also have such a feature, including: a cover plate, mounted on the housing, vertically passed by the rotating shaft, at least covering the limiting wheel, the advance and retreat mechanism and the reset mechanism.

[0012] The reset control component provided by the present invention may also have such features, including: a status signal output mechanism, having a micro switch, installed in the shell near the limit wheel, having a signal switch, the signal switch is close to the limit wheel, when the rotating shaft is rotated through a predetermined angle, when the groove of the limit wheel is inserted by the advance and retreat rod, the limit wheel pushes the signal switch of the status signal output mechanism to close, and the reset status mechanism continues to output an electrical signal, once the advance and retreat rod moves in a direction away from the limit wheel and is exited from the groove, the rotating shaft returns to its initial position and drives the limit wheel to rotate, so that the limit wheel releases the signal switch, and the reset status mechanism stops outputting electrical signals.

[0013] The reset control assembly provided by the present invention may also have the following features, including: a cover plate installed on the housing, vertically penetrated by the rotating shaft, and at least covering the limiting wheel, the advance and retreat mechanism, and the reset mechanism.

[0014] The present invention provides a reset switch, which is installed on a control device and is used to switch on and off multiple control circuits. The switch is characterized in that it includes: a contact control component, which is used to connect the wires in the control circuit; a rotating shaft, which extends vertically from the contact control component and is used to change the connection mode of the circuit in the contact control component by rotation; a reset control component, which is installed on the contact control component; a switch installation panel, which is passed through by the rotating shaft and is installed on a side of the reset control component away from the contact control component, and is used to be installed on a panel of the control device; and a handle, which is fixed to the rotating shaft and is located on a side of the switch installation panel away from the reset control component, wherein the reset control component is the above-mentioned reset control component.

[0015] Function and Effect of the Invention

[0016] According to the reset control assembly and reset switch of the present invention, when the reset switch needs to be reset, the coil is energized through the control signal of the external control signal circuit, attracting the second metal block, so that the second metal block drives the advance and retreat rod to move in the direction close to the first metal block, allowing the advance and retreat rod to withdraw from the groove in the limit wheel. At this time, the rotating shaft immediately returns to the initial position under the action of the elastic member in the control assembly, thereby achieving the reset of the reset switch and the on-off switching of the control circuit. After the coil is energized, the process of attracting the second metal block to move is very rapid, which makes the entire reset process extremely short, which can meet the needs of the control circuit that needs to be quickly switched on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of a reset switch in an embodiment of the present invention;

[0018] Figure 2 is a front view of a reset control assembly in an embodiment of the present invention;

[0019] Figure 3is a rear view of a reset control assembly in an embodiment of the present invention;

[0020] Figure 4 is a rear view of the reset control assembly when the reset switch is turned to a predetermined position after the cover plate is removed in the embodiment of the present invention;

[0021] Figure 5 is a rear view of the reset control assembly after the reset switch is reset after the cover plate is removed in the embodiment of the present invention;

[0022] Figure 6 is a front view of a limiting wheel in an embodiment of the present invention;

[0023] Figure 7 It is a three-dimensional diagram of the cooperation between the advance and retreat mechanism and the reset mechanism in the embodiment of the present invention.

[0024] Figure 8 is a rear view of an embodiment of the present invention when only the emergency reset mechanism is installed on the housing;

[0025] Fig. 9 It is a cross-sectional view of an embodiment of the present invention when only the emergency reset mechanism is installed on the housing. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments.

[0027] In the following embodiments, the description of the up and down directions is based on the direction of the rear view of the reset control assembly, that is, the up and down directions refer to the up and down directions of the reset control assembly, and the left and right directions refer to the left and right directions of the reset control assembly.

[0028] <Example>

[0029] Figure 1 4 is a three-dimensional diagram of a reset switch in an embodiment of the present invention.

[0030] like Figure 1 As shown, this embodiment provides a reset switch 100, which is installed on a control device and is used to switch multiple control circuits on and off, including a rotating shaft, a handle 1, a switch installation panel 2, a reset control component 3 and a contact control component 4.

[0031] The handle 1 is mounted on the rotating shaft and fixed to the rotating shaft, and the other end of the rotating shaft vertically passes through the switch installation panel 2, the reset control component 3 and the contact control component 4.

[0032] The switch installation panel 2 is installed on a side close to the handle 1 and is used to fix the reset switch 100 on the panel of the control device.

[0033] The reset control assembly 3 is installed on a side of the switch panel 2 away from the handle 1 and is used to reset the reset switch 100 .

[0034] The contact control assembly 4 is installed on one side of the original switch panel 2 of the reset control assembly 3 and is used to connect the wires in the control loop.

[0035] When the handle 1 drives the rotating shaft to rotate through a predetermined angle, under the action of the elastic member in the contact control component 4, if the reset control component 3 does not limit the rotating shaft, the rotating shaft and the handle 2 will return to the initial position.

[0036] Figure 2 It is a front view of the reset control component in the embodiment of the present invention. Figure 3 4 is a rear view of the reset control assembly in the embodiment of the present invention. Figure 4 It is a rear view of the reset control assembly when the reset switch is turned to a predetermined position after the cover plate is removed in the embodiment of the present invention. Figure 5 It is a rear view of the reset control assembly after the reset switch is reset after the cover plate is removed in the embodiment of the present invention.

[0037] like Figures 2 to 5 As shown, the reset control assembly 3 has a housing 31 , a limiting wheel 32 , an advance and retreat mechanism 33 , a signal input mechanism 34 , a reset mechanism 35 , a status signal output mechanism 36 , an emergency reset mechanism 37 and a cover plate 38 .

[0038] The housing 31 is vertically penetrated by the rotating shaft.

[0039] Figure 6 It is a front view of the limiting wheel in the embodiment of the present invention.

[0040] like Figure 6 As shown, the limiting wheel 32 is installed in the housing 31 and is vertically penetrated by the rotating shaft and rotates along with the rotating shaft.

[0041] The outer circumferential surface of the limiting wheel 32 is provided with a groove 321 perpendicular to the outer circumferential surface, a first arc edge 322 , a second arc edge 323 , a first straight edge 324 and a second straight edge 325 .

[0042] The groove 321 is used to limit the rotation shaft after it rotates through a predetermined angle, so that the rotation shaft is stuck and cannot return to the initial position.

[0043] The radius of the first arc edge 322 is greater than that of the second arc edge 323, and the first arc edge 322 is connected to the first arc edge 323 through the first straight edge 324 and the second straight edge 325. The angle between the first straight edge 324 and the first arc edge 322 and the second arc edge 323 is an acute angle, and the second straight edge 325 is tangent to the second arc edge 323. The groove 321 is arranged on the first arc edge 322 near the second straight edge 325.

[0044] The advance and retreat mechanism 33 is installed in the housing, and is used to control the limiting wheel 32 to limit and reset the rotating shaft through the advance and retreat movement.

[0045] Figure 7 It is a stereoscopic diagram of the advance and retreat mechanism and the reset mechanism in the embodiment of the present invention.

[0046] like Figure 7 As shown, the advance and retreat mechanism 33 comprises an advance and retreat rod 333, an advance and retreat rod base 334, a protrusion 335 and an elastic element 336. The reset mechanism 35 comprises a first metal block 331, a second metal block 332, a coil 351 and a coil seat 352.

[0047] The first metal block 331 and the second metal block 332 are both made of metal materials that can be attracted by magnets, and have the same shape and size, and are generally M-shaped and horizontally oppositely distributed. The first metal block 331 and the second metal block 332 each have a vertically extending first column foot 33a in the middle, and have vertically extending and symmetrically distributed second column feet 33b and third column feet 33c on both sides.

[0048] The first metal block 331 is fixed to the bottom of the housing 31 , and the second metal block 332 can move up and down along the extending direction of the first column foot 33 a thereof.

[0049] In the initial state, the first column foot 33 a , the second column foot 33 b and the third column foot 33 c of the first metal block 331 and the second metal block 332 are respectively attached.

[0050] One end of the advance and retreat rod 333 is vertically fixed on the advance and retreat rod base 334, and the other end is in contact with the first arc edge 322 of the limiting wheel. The advance and retreat rod 333 is parallel to the first column foot 33a, the second column foot 33b and the third column foot 33c.

[0051] The advance and retreat rod base 334 is fixedly connected to the second metal block 331, and is located on the side of the second metal block 331 opposite to its first column foot, and has a base slope 334a. The base slope 334a forms a 45° angle with the plane of the side of the second metal block 331 opposite to its first column foot, and is symmetrically distributed on both sides of the advance and retreat rod base 334.

[0052] The protrusions 335 are located on both sides of the advance / retract rod 333 in the length direction, extending toward the advance / retract rod base 334 , and are used to fix the elastic element 336 .

[0053] One end of the elastic element 336 is connected to the protrusion 335 , and the other end is against the shell 31 and is in a compressed state, which is used to provide a pressure to the advance and retreat rod 333 to move the advance and retreat rod 333 toward the limiting wheel 32 so that the advance and retreat rod 333 is close to the limiting wheel 32 .

[0054] In this embodiment, the elastic element 336 is two springs.

[0055] The coil 351 is connected to the pin 342 and is wound around the coil seat 352. The first column feet 33a of the first metal block 331 and the second metal block 332 pass through both ends of the coil seat 352. When the control signal circuit is energized, the coil 351 and the first column foot 33a form an electromagnetic unit and generate magnetic force. Under the action of the magnetic force, the second metal block 332 moves toward the direction close to the first metal block 331, so that the advance and retreat rod base 334 and the advance and retreat rod 333 fixedly connected to the second metal block 332 move together in the direction away from the limiting wheel 32. When the second metal block 332 is in contact with the first column foot 33a, the second column foot 33b and the third column foot 33c corresponding to the first metal block 331, the advance and retreat rod 333 completely withdraws from the groove 321. At this time, under the action of the elastic member in the control component 4, the rotating shaft drives the limiting wheel 32 to rotate together and return to the initial position. The state after reset is as shown in FIG. Figure 5 shown.

[0056] like Figure 4 As shown, when the rotating shaft drives the limiting wheel 32 to rotate through a predetermined angle, for example, after rotating through 45° in this embodiment, the limiting wheel 32 rotates to a position where its groove 321 is opposite to the advance and retreat rod 333. The advance and retreat rod 333 is inserted into the groove 321 under the pressure of the spring, thereby limiting the rotating shaft from returning to the initial position, realizing the limit of the rotating shaft, and enabling the control circuit to switch the on and off state and maintain the corresponding state. At this time, the second metal block 332 moves together with the advance and retreat rod 333 in a direction away from the first metal block 331, and there is a certain distance between the corresponding first column foot 33a, second column foot 33b and third column foot 33c between the second metal block 332 and the first metal block 331.

[0057] The signal input mechanism 34 is installed in the housing 31 and connected to an external control signal circuit for receiving a control signal.

[0058] In this embodiment, the control signal is a current signal when the control signal circuit is turned on.

[0059] The signal input mechanism 34 includes a pin mounting seat 341 and a pin 342 .

[0060] The pin mounting seat 341 is mounted at the bottom of the housing 31 for mounting the pin 342. In this embodiment, the pin mounting seat 341 can be removed from the housing 31, so as to facilitate the installation of the advance and retreat mechanism 33 and the reset mechanism 35 into the housing 31.

[0061] Pin 342 is used to connect to an external control signal circuit and a reset mechanism 35 .

[0062] The reset mechanism 35 is installed in the housing 31 and is electrically connected to the signal input mechanism 34 . It is used to control the movement of the advance and retreat mechanism 33 according to the current signal of the external control signal so as to reset the limited rotating shaft.

[0063] The state signal output mechanism 36 is connected to an external reset state control circuit.

[0064] In this embodiment, the status signal output mechanism 36 is a micro switch having a signal switch 361 .

[0065] When the rotating shaft is limited by the limiting wheel 32, that is, when the advance and retreat rod 333 is inserted into the groove 321, the portion where the first arc edge 322 of the limiting wheel 32 is connected to the first straight edge 324 presses the signal switch 361 to close the signal switch 361.

[0066] In this embodiment, a signal indicator light is also connected to the reset state control circuit to indicate the reset state of the reset switch 100 of the present invention. The signal indicator light can be installed in a place far away from the reset switch 100 of the present invention (for example, in a control room). When the reset state control circuit is turned on, the signal indicator light will light up to remind the user that the corresponding reset switch 100 is in place and the control circuit is turned on. Once the signal indicator light goes out, the corresponding reset switch 100 is reset. If the signal indicator light does not go out after the coil 351 is energized, it means that the reset operation of the reset switch 100 is invalid.

[0067] In this embodiment, in order to reduce the number of pins, a total of three pins 342 are set, among which the middle pin 342 is a common end for connecting the negative pole; the left pin 342 is used to connect the input end of the status signal output mechanism and the positive pole of the reset status control circuit; the right pin 342 is used to connect the coil 351.

[0068] Figure 8 It is a rear view of the embodiment of the present invention when only the emergency reset mechanism is installed on the housing. Fig. 9 It is a cross-sectional view of an embodiment of the present invention when only the emergency reset mechanism is installed on the housing.

[0069] like Figure 8 and Fig. 9 As shown, the emergency reset mechanism 37 is installed on the surface of the housing and has a reset button 371 and a spring 372 .

[0070] The reset button 371 includes a pressing portion 371 a , a reset protrusion 371 b , and a reset slope 371 c corresponding to the base slope 334 a .

[0071] The pressing portion 371 a is located on the surface of the shell, and is used to allow a user to press the reset button 371 to move toward the inside of the shell 31 .

[0072] The reset protrusion 371 extends from the pressing portion 371a toward the inside of the housing 31, and the side away from the pressing portion 371a is a reset slope 371c. The reset slope 371c forms an angle of 45° with the pressing portion and is parallel to the base slope 334a.

[0073] In the initial state, the edge line of the end of the reset protrusion 371 is in contact with the bottom edge of the base slope 334a, which is also an edge of the base slope 334a close to the second metal block 332.

[0074] When the user presses the reset button 371, a force perpendicular to the pressing portion 371a is applied to the pressing portion 371a. The reset protrusion 371 moves toward the direction close to the inside of the shell 31, and the reset slope 371c gradually fits with the base slope 334a. Since the reset slope 371c and the pressing portion are at an angle of 45°, the base slope 334a receives a vertical force, so that the advance and retreat rod base 334 and the second metal block 332 fixed thereto and the advance and retreat rod 333 move toward the direction close to the first metal block 331, so that the advance and retreat rod 333 exits the groove. At this time, under the action of the elastic member in the control component 4, the rotating shaft drives the limiting wheel 32 to rotate together and return to the initial position.

[0075] One end of the spring 371 abuts against the side of the pressing portion 371 a facing the inside of the housing 31 , and the other end abuts against the housing 31 , and is in a compressed state.

[0076] The cover plate 38 is mounted on the housing 31, and is vertically penetrated by the rotating shaft, covering the limit wheel 32, the advance and retreat mechanism 33, the reset mechanism 35, and the state signal output mechanism 36. After the cover plate 38 is mounted on the housing 31, the pin 342 of the signal input mechanism 34 is exposed outside the cover plate 38.

[0077] Example Function and Effect

[0078] The reset control assembly and reset switch provided in this embodiment, when the reset switch needs to be reset, the coil is energized through the control signal of the external control signal circuit, attracting the second metal block, so that the second metal block drives the advance and retreat rod to move in the direction close to the first metal block, and the advance and retreat rod is withdrawn from the groove in the limit wheel. At this time, the rotating shaft immediately returns to the initial position under the action of the elastic member in the control assembly, thereby resetting the reset switch and switching the control circuit on and off. After the coil is energized, the process of attracting the second metal block to move is very rapid, which makes the entire reset process extremely short, which can meet the needs of the control circuit that needs to switch on and off quickly.

[0079] In addition, since a status signal output mechanism is provided, the reset status of the reset switch can be immediately known to the user. In particular, when the reset switch is remotely operated for resetting, the user does not need to go to the site to determine the status of the reset switch. The user can remotely determine whether the reset switch has been reset based on the indicator light connected to the status signal output mechanism, and immediately determine whether to further adjust and control the reset switch based on the judgment result. This reduces the burden on the staff.

[0080] In addition, since the emergency reset mechanism can reset the reset switch by manual operation when the reset mechanism controlled by the control signal fails, and the emergency reset mechanism of this embodiment only includes a reset button and a spring, the structure is very simple, and the advance and retreat mechanism controlled by the reset mechanism is the same limit mechanism, and no other complex components are added to control, which saves the internal space of the reset control component and prevents the volume of the reset control component from becoming bulky.

[0081] In addition, since the coil in the reset mechanism and the micro switch as the status signal output mechanism share a common negative terminal, the pins of both for connecting to the external circuit are located at the bottom of the shell, which is convenient for users to connect the circuit.

[0082] The above embodiments are only used to illustrate specific implementation modes of the present invention, and the present invention is not limited to the description scope of the above embodiments.

[0083] In other embodiments, the control signal circuit and the reset state control circuit can be connected to a computer, and the computer can control the on and off of the control signal circuit and monitor the opening and closing of the signal switch in the reset filling control mechanism. After the reset mechanism is controlled by the control signal circuit to reset the reset switch, it is determined whether the reset switch has completed the reset action, and an alarm is further issued after it is determined that the reset action has not been completed.

Claims

1. A reset control assembly, used to limit and reset the rotating shaft in a reset switch, characterized in that: include: A housing, through which the rotating shaft vertically penetrates; A limiting wheel is installed in the housing, is vertically passed through by the rotating shaft, and rotates along with the rotating shaft; An advance and retreat mechanism, comprising an advance and retreat rod which cooperates with the limiting wheel and can limit the limiting wheel by advancing and retreating; A signal input mechanism, connected to an external control signal circuit, for receiving a control signal; as well as A reset mechanism, used for controlling the movement of the advance and retreat mechanism according to the control signal to release the limit of the rotating shaft; An emergency reset mechanism, mounted on the surface of the housing, for manually resetting the rotating shaft; as well as The status signal output mechanism has a micro switch, which is installed in the housing near the limit wheel and has a signal switch. Wherein, the outer circumferential surface of the limiting wheel is provided with a groove which matches with the advancing and retreating rod. The reset mechanism comprises an electromagnetic unit electrically connected to the signal input mechanism and a metal block inserted into the electromagnetic unit. When the signal input mechanism receives the control signal, the electromagnetic unit is energized to cause the metal block to generate electromagnetic force and drive the advance and retreat rod to move in a direction away from the limit wheel, so that the advance and retreat rod exits the groove and releases the limit of the limit wheel and the rotating shaft, thereby resetting the rotating shaft. The metal block includes a first metal block and a second metal block. The first metal block and the second metal block have the same shape and size, are M-shaped as a whole, are horizontally opposed, have a first column foot extending vertically in the middle, and have second column feet and third column feet extending vertically on both sides. The first metal block is fixed to the bottom of the shell, and the second metal block moves along the extension direction of the first column foot of the second metal block. The portion where the advance and retreat rod is connected to the metal block is provided with an advance and retreat rod base, the advance and retreat rod base has a base slope that is at an angle of 45° with the advance and retreat rod, the emergency reset mechanism has a reset button and a spring, the reset button is mounted on the surface of the shell, has a pressing portion for pressing and a reset convex portion, the reset convex portion extends from the pressing portion to the inside of the shell, and has a reset slope corresponding to the base slope, the reset slope is at an angle of 45° with the pressing portion, by pressing the reset button, the advance and retreat rod base drives the metal block and the advance and retreat rod to move, so that the advance and retreat rod withdraws from the groove, thereby resetting the rotating shaft, The advance and retreat mechanism also has an elastic element, one end of which is connected to the housing, and the other end is connected to the advance and retreat rod and provides pressure to the advance and retreat rod toward the limiting wheel. Under the action of the pressure, the advance and retreat rod is inserted into the groove to limit the limiting wheel and the rotating shaft. The signal input mechanism is installed at the bottom of the housing and has a pin, the pin is connected to the coil and the control signal circuit, once the control signal circuit is powered on, the electromagnetic unit is powered on to generate electromagnetic force, The outer circumferential surface of the limiting wheel is provided with a first arc edge and a second arc edge, the radius of the first arc edge is greater than that of the second arc edge, the second arc edge is connected to the first arc edge through a first straight edge and a second straight edge respectively, the angles between the first straight edge and the first arc edge and the second arc edge are acute angles, the second straight edge is tangent to the second arc edge, and the groove is arranged on the first arc edge near the second straight edge. The signal switch is close to the limit wheel. When the rotating shaft is rotated through a predetermined angle and the groove of the limit wheel is inserted by the advance and retreat rod, the limit wheel pushes the signal switch of the status signal output mechanism to close, and the reset state control circuit continuously outputs an electrical signal. Once the advance and retreat rod moves away from the limit wheel and is exited from the groove, the rotating shaft returns to its initial position and drives the limit wheel to rotate, so that the limit wheel releases the signal switch, and the reset state control circuit stops outputting electrical signals.

2. The reset control assembly according to claim 1, characterized in that: in, The electromagnetic unit comprises a coil base and a coil wound on the coil base. The coil seat has a through hole at its center, and the metal block includes two M-shaped parts, which are inserted into the through hole from two sides of the coil seat respectively. The coil is electrically connected to the signal input mechanism.

3. The reset control assembly according to claim 1, characterized in that: Also includes: A cover plate is mounted on the housing and vertically penetrated by the rotating shaft, and at least covers the limiting wheel, the advancing and retreating mechanism, and the resetting mechanism.

4. A reset switch, installed on a control device, used to switch on and off multiple control circuits, characterized in that: include: A contact control assembly, used for connecting the wires in the control loop; A rotating shaft extending vertically from the contact control assembly and used to change the connection mode of the circuit in the contact control assembly by rotating; A reset control component, mounted on the contact control component; a switch mounting panel, through which the rotating shaft passes, mounted on a side of the reset control assembly away from the contact control assembly, and used for being mounted on a panel of the control device; and A handle is fixed to the rotating shaft and is located on a side of the switch mounting panel away from the reset control assembly. Wherein, the reset control component is the reset control component described in any one of claims 1 to 3.

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