Auxiliary contact driving structure and switching electric appliance

Abstract

The utility model relates to the field of low-voltage electric appliances, and provides an auxiliary contact driving structure and a switching device, the auxiliary contact driving structure comprises an auxiliary contact system and an operating mechanism, the auxiliary contact system comprises an auxiliary contact group and a push rod, the operating mechanism comprises a support, an operating part rotatably mounted on the support and a sliding plate slidably mounted on the support, the operating part can be switched between a switching-on position and a switching-off position, and the operating part is in driving fit with the push rod through the sliding plate; and when the operating piece rotates to a closing position or an opening position, the operating piece drives the sliding plate, so that the sliding plate drives the auxiliary contact group to switch the opening and closing states through the push rod. The switching device comprises a main contact system and an auxiliary contact driving structure, the operating mechanism is used for opening and closing operation of the switching device and is also used for driving an on-off auxiliary circuit, a rotating operating piece of the operating mechanism drives a sliding plate, the sliding plate drives an auxiliary contact group to be opened or closed through a push rod, the structure is simple, and driving is reliable.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to an auxiliary contact driving structure and a switch electrical appliance. Background Art

[0002] Switching devices, especially control and protection switching devices with the ability to frequently switch on and off loads and protect lines such as overload, short circuit, and stall, are equipped with auxiliary contacts to increase the performance of the switching devices. Their purpose is to monitor the status of the switching devices and provide fault alarm signals. The operating mechanism in the switching device serves as the actuator of the switching device and plays the function of opening and closing the switching device. In existing switching devices, the driving structure used to drive the auxiliary contacts has problems such as complex structure and unreliable operation. Utility Model Content

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and provide an auxiliary contact driving structure and a switch electrical appliance.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The auxiliary contact driving structure includes an auxiliary contact system and an operating mechanism for driving the opening and closing of the switch electrical appliance, the auxiliary contact system includes an auxiliary contact group and a push rod for driving the auxiliary contact group to switch the open and closed states, the auxiliary contact group includes matching auxiliary static contacts and auxiliary moving contacts, the operating mechanism includes a bracket and an operating member rotatably mounted on the bracket, the operating mechanism also includes a slide plate slidably mounted on the bracket, the operating member can switch between a closing position and an opening position, and the operating member is driven to cooperate with the push rod through the slide plate; when the operating member rotates to the closing position or the opening position, the operating member drives the slide plate, so that the slide plate drives the auxiliary contact group to switch the open and closed states through the push rod.

[0006] Optionally, the auxiliary contact system further comprises an auxiliary contact support and a reset spring providing elastic reset force for the auxiliary contact support, the auxiliary moving contact is mounted on the auxiliary contact support, and the push rod cooperates with the auxiliary contact support;

[0007] When the operating part is rotated to the closing position, the operating part drives the slide plate to push the push rod, so that the push rod pushes the auxiliary contact support to overcome the elastic force of the reset spring, so that the auxiliary moving contact moves with the auxiliary contact support to close with the auxiliary static contact; when the operating part is rotated to the opening position, the operating part drives the slide plate to release the push rod, so that the push rod and the auxiliary contact support are reset under the action of the reset spring, so that the auxiliary moving contact moves with the auxiliary contact support to disconnect with the auxiliary static contact.

[0008] Optionally, the rotation axis direction of the operating member is parallel to the movement direction of the auxiliary contact support, and the movement direction of the slide plate is perpendicular to the movement direction of the auxiliary contact support and perpendicular to the rotation axis direction of the push rod.

[0009] Optionally, the slide plate is located below the auxiliary contact system, the slide plate is provided with a stop block extending upward, and the push rod includes an actuated arm driven and cooperated with the stop block; when the operating member rotates toward the closing position, the actuated arm of the push rod is on the movement trajectory of the stop block of the slide plate; when the operating member rotates toward the opening position, the stop block moves in a direction away from the actuated arm.

[0010] Optionally, the push rod further includes a push rod rotating portion that is rotatably arranged and a pressing arm that presses against an auxiliary contact support of the auxiliary contact system, and the pressing arm and the passive arm are respectively connected to the side walls of the push rod rotating portion.

[0011] Optionally, an actuated groove is provided on the slide plate, and the actuated groove has a first actuated side wall and a second actuated side wall, and a driving protrusion extending into the actuated groove is provided on the side of the operating member facing the slide plate; when the operating member rotates toward the closing position, the first actuated side wall of the slide plate is on the movement trajectory of the driving protrusion of the operating member; when the operating member rotates toward the opening position, the second actuated side wall of the slide plate is on the movement trajectory of the driving protrusion of the operating member.

[0012] Optionally, the bracket includes a first mounting plate and a second mounting plate that are spaced apart from each other, the skateboard is slidably mounted on the outer side of the first mounting plate, an avoidance hole is provided on the first mounting plate, the operating member is rotatably mounted between the first mounting plate and the second mounting plate through an operating member shaft, and the driving protrusion of the operating member passes through the avoidance hole and extends into the driven groove of the skateboard.

[0013] Optionally, a straight sliding groove is provided on the bracket, and a straight first sliding rib is provided on the slide plate, and the first sliding rib is slidably inserted into the sliding groove.

[0014] Optionally, a recessed groove is provided on the bottom wall of one end of the slide groove, and an L-shaped second sliding rib is provided on the slide plate. The root of the second sliding rib is slidably inserted into the slide groove, and the end of the second sliding rib extends out of the slide groove through the recessed groove and cooperates with the first mounting plate of the bracket to limit the position.

[0015] A switching device comprises a main contact system and any of the auxiliary contact drive structures. When the operating member of the operating mechanism of the auxiliary contact drive structure rotates to a closing position or an opening position, the operating mechanism drives the main contact system to switch the opening and closing states.

[0016] The auxiliary contact driving structure and switch electrical appliance of the utility model have an operating mechanism used for both the opening and closing operations of the switch electrical appliance and for driving the on-off auxiliary circuit. The rotating operating member of the operating mechanism drives the sliding slide plate, so that the slide plate drives the auxiliary contact group to open or close through the push rod. The structure is simple and the driving is reliable.

[0017] In addition, the operating part pushes and releases the push rod by driving the slide plate, and stores and releases energy with the help of the reset spring to switch the opening and closing states of the auxiliary contact group. Contact transmission can be used between the actuating parts, without the need for complex mechanical connections. The action relationship is simple, the drive is reliable, and the accuracy of the feedback signal of the auxiliary contact system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the auxiliary contact driving structure of the utility model in the closed state;

[0019] Figure 2 This is a front view of the auxiliary contact driving structure of the utility model in the closed state;

[0020] Figure 3 It is a top view of the auxiliary contact driving structure hidden cover of the utility model in the closed state;

[0021] Figure 4 This is a front view of the auxiliary contact driving structure of the utility model in the disconnected state;

[0022] Figure 5 It is a top view of the auxiliary contact driving structure hidden upper cover of the utility model in the disconnected state;

[0023] Figure 6 It is a structural schematic diagram of the auxiliary contact system of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the hidden upper cover of the auxiliary contact system of the utility model;

[0025] Figure 8 It is a structural schematic diagram of the push rod of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the utility model skateboard;

[0027] Fig.10 It is a structural schematic diagram of the first mounting plate of the utility model;

[0028] Fig.11 It is a structural schematic diagram of the operating part of the utility model.

[0029] Auxiliary contact system 1; auxiliary contact group 10; housing 11; base 111; upper cover 112; push rod 12; actuated arm 121; push rod rotating part 122; square column 1221; round shaft 1222; pressing arm 123; auxiliary static contact 13; auxiliary moving contact 14; auxiliary contact support 15; actuated part 151; inclined surface 1511; rounded corner 1512; reset spring 16; operating mechanism 2; bracket 20; first mounting plate 21; avoidance hole 211; slide groove 212; sink groove 213; second mounting plate 22; operating member 23; driving protrusion 231; slide plate 24; block 241; first mating surface 2411; actuated groove 242; first actuated side wall 243; second actuated side wall 244; first sliding rib 245; second sliding rib 246; operating member rotating shaft 25. DETAILED DESCRIPTION

[0030] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the auxiliary contact drive structure and the switch electrical appliance of the utility model. The auxiliary contact drive structure and the switch electrical appliance of the utility model are not limited to the description of the following embodiments.

[0031] like Figure 2 and Figure 4 As shown, the switching device of this embodiment includes a main contact system (not shown in the figure) and an auxiliary contact driving structure. The auxiliary contact driving structure of this embodiment is suitable for controlling and protecting switching devices, such as contactors and circuit breakers. The auxiliary contact driving structure includes an auxiliary contact system 1 and an operating mechanism 2 for driving the switching device to open and close.

[0032] like Figure 1-Figure 5As shown, the auxiliary contact system 1 of this embodiment includes an auxiliary contact group 10 and a push rod 12 for driving the auxiliary contact group 10 to switch the open and closed states. The auxiliary contact group 10 includes a matching auxiliary static contact 13 and an auxiliary moving contact 14. The operating mechanism 2 includes a bracket 20 and an operating member 23 rotatably mounted on the bracket 20. In particular, the operating mechanism 2 also includes a slide plate 24 slidably mounted on the bracket 20. The operating member 23 can switch between a closing position and an opening position, and the operating member 23 is driven and cooperated with the push rod 12 through the slide plate 24; when the operating member 23 rotates to the closing position or the opening position, the operating mechanism 2 drives the main contact system to switch the open and closed states, and at the same time, the operating member 23 drives the slide plate 24, so that the slide plate 24 drives the auxiliary contact group 10 to switch the open and closed states through the push rod 12. The auxiliary contact driving structure and the switch electrical appliance of this embodiment, the operating mechanism 2 is used for both the opening and closing operation of the switch electrical appliance and the driving of the auxiliary circuit. The rotating operating member 23 of the operating mechanism 2 drives the sliding slide 24, so that the slide 24 drives the auxiliary contact group 10 to open or close through the push rod 12. The structure is simple and the driving is reliable. It should be noted that the technology of the operating mechanism 2 of this embodiment driving the main contact system to switch the open and closed state is the existing technology and will not be repeated here.

[0033] like Figure 6 and Figure 7 As shown, the auxiliary contact system 1 of this embodiment further includes an auxiliary contact support 15 and a reset spring 16 that provides elastic reset force for the auxiliary contact support 15. The auxiliary moving contact 14 is mounted on the auxiliary contact support 15, and the push rod 12 cooperates with the auxiliary contact support 15. The rotation axis direction of the operating member 23 ( Figure 3 The movement direction of the slide plate 24 is parallel to the movement direction of the auxiliary contact support 15. Figure 3 left and right directions) and the movement direction of the auxiliary contact support 15 ( Figure 3 The vertical direction of the drawing) is perpendicular to the rotation axis of the push rod 12. Figure 2 and Figure 3 As shown, when the operating member 23 rotates to the closing position, that is, the main contact system is switched to the closed state, the operating member 23 drives the slide plate 24 to push the push rod 12, so that the push rod 12 pushes the auxiliary contact support 15 to overcome the elastic force of the reset spring 16 to move, so that the auxiliary moving contact 14 moves with the auxiliary contact support 15 to close with the auxiliary static contact 13; Figure 4 and Figure 5As shown, when the operating member 23 rotates to the opening position, that is, the main contact system is switched to the disconnected state, the operating member 23 drives the slide plate 24 to release the push rod 12, so that the push rod 12 and the auxiliary contact support 15 are reset under the action of the reset spring 16, so that the auxiliary moving contact 14 moves with the auxiliary contact support 15 to disconnect from the auxiliary static contact 13. The operating member 23 drives the slide plate 24 to push and release the push rod 12, and stores and releases energy with the help of the reset spring 16 to achieve the switching of the opening and closing state of the auxiliary contact group 10. Contact transmission can be adopted between the actuating members, without complex mechanical connection, the action relationship is simple, the drive is reliable, and the accuracy of the feedback signal of the auxiliary contact system 1 is improved. Of course, as other embodiments, the reset spring 16 may not be provided, and the mechanical connection between the push rod 12 and the slide plate 24 and the auxiliary contact support 15 is adopted to achieve transmission.

[0034] The auxiliary contact system 1 of this embodiment is provided with a group of auxiliary contact groups 10, whose opening and closing states are the same as those of the main contact system. Of course, two or more auxiliary contact groups 10 can also be provided, which can include auxiliary contact groups 10 whose opening and closing states are the same as those of the main contact system and auxiliary contact groups 10 whose opening and closing states are different from those of the main contact system, so as to meet different signal requirements. The auxiliary contact group 10 of this embodiment adopts a double-contact structure, and the auxiliary moving contact 14 of the auxiliary contact group 10 is a bridge-type structure, with a moving contact at each end, and the auxiliary contact group 10 is provided with two auxiliary static contacts 13 corresponding to the two moving contacts. Of course, the auxiliary contact group 10 can also adopt a single-contact structure.

[0035] like Figure 6 and Figure 7 As shown, the auxiliary contact system 1 of this embodiment also includes a housing 11, the housing 11 includes a base 111 and an upper cover 112, the upper cover 112 is covered and fixed on the base 111, the auxiliary static contact 13 is fixed in the housing 11, the auxiliary contact support 15 is installed in the housing 11, and is provided with a driven part 151 extending out of the housing 11, and the push rod 12 is rotatably installed outside the housing 11 and cooperates with the driven part 151 of the auxiliary contact support 15. The auxiliary static contact 13 and the auxiliary contact support 15 loaded with the auxiliary moving contact 14 are built-in, the housing 11 plays the role of electrical isolation, and improves the safety of use. The push rod 12, as a transmission member between the auxiliary contact system 1 and the drive structure, is externally arranged in the housing 11, which is convenient for cooperating with the slide plate 24 of the drive structure, and the layout is compact and reasonable.

[0036] like Figure 1 , Figure 8 and Fig. 9As shown in the driving structure between the slide plate 24 and the push rod 12 of this embodiment, the slide plate 24 is located below the auxiliary contact system 1, the slide plate 24 is provided with a stopper 241 extending upward, and the push rod 12 includes a passive arm 121 drivingly matched with the stopper 241. Figure 3 As shown, when the operating member 23 rotates toward the closing position, the passive arm 121 of the push rod 12 is on the motion track of the stopper 241 of the slide plate 24; Figure 5 As shown, when the operating member 23 rotates toward the opening position, the stopper 241 moves away from the actuated arm 121. Figure 3 As shown, the passive arm 121 of the push rod 12 is a straight plate structure, and the stopper 241 of the slide plate 24 has a first mating surface 2411 for mating with the passive arm 121, and the first mating surface 2411 is an arc surface, so that the driving between the linearly moving slide plate 24 and the rotating push rod 12 is stable and reliable.

[0037] like Figure 3 , Figure 5 and Figure 8 As shown, the push rod 12 also includes a push rod rotating portion 122 that is rotatably arranged and a pressing arm 123 that presses against the passive portion 151 of the auxiliary contact support 15, and the pressing arm 123 and the passive arm 121 are respectively connected to the side walls of the push rod rotating portion 122. Specifically, the push rod 12 rotating shaft includes a square column 1221 and two circular shafts 1222 located at both ends of the square column 1221, and the push rod 12 is rotatably mounted on the housing 11 through the circular shafts 1222, and the circular shafts 1222 are the rotation axis of the push rod 12. The pressing arm 123 and the passive arm 121 are respectively and integrally connected to two adjacent side walls of the square column 1221, and the pressing arm 123 is vertically connected to the side wall of the square column 1221, and the passive arm 121 is inclinedly arranged on the side wall of the square column 1221 in a direction away from the pressing arm 123. Preferably, as Figure 5 As shown, the round shaft 1222 and the pressing arm 123 are straight plate structures, and the passive part 151 of the auxiliary contact support 15 has a second mating surface for mating with the pressing arm 123, and the second mating surface includes an inclined surface 1511 that fits with the pressing arm 123 when the operating member 23 is in the closing position and a rounded corner 1512 that contacts with the pressing arm 123 when the operating member 23 is in the opening position. This allows for stable and reliable driving between the rotating push rod 12 and the linearly moving auxiliary contact support 15.

[0038] like Figure 1 , Fig. 9 and Fig.11As shown, in the driving structure between the operating member 23 and the slide plate 24 of the present embodiment, the slide plate 24 is provided with an actuated groove 242, and the actuated groove 242 has a first actuated side wall 243 and a second actuated side wall 244, and the operating member 23 is provided with a driving protrusion 231 extending into the actuated groove 242 on the side facing the slide plate 24; when the operating member 23 rotates toward the closing position, the first actuated side wall 243 of the slide plate 24 is on the movement trajectory of the driving protrusion 231 of the operating member 23; when the operating member 23 rotates toward the opening position, the second actuated side wall 244 of the slide plate 24 is on the movement trajectory of the driving protrusion 231 of the operating member 23.

[0039] like Figure 1 , Figure 9-11 As shown, the bracket 20 includes a first mounting plate 21 and a second mounting plate 22 that are spaced apart from each other, the slide plate 24 is slidably mounted on the outer side of the first mounting plate 21, the first mounting plate 21 is provided with an avoidance hole 211, the operating member 23 is rotatably mounted between the first mounting plate 21 and the second mounting plate 22 through an operating member rotating shaft 25, the driving protrusion 231 of the operating member 23 passes through the avoidance hole 211 and extends into the driven groove 242 of the slide plate 24, and the operating member rotating shaft 25 is the axis of the rotating shaft of the operating member 23.

[0040] Preferably, a first driving tooth is provided in the radial direction of the operating member 23, and a knob is provided on the switch electrical appliance, and a second driving tooth is provided on the knob. When the knob is rotated, the operating member 23 is driven to rotate through the second driving tooth and the first driving tooth, so that the operating member 23 drives the main contact system to switch the open and closed state through the connecting rod mechanism. The connecting rod mechanism is usually a four-link or five-link structure, which is located between the first mounting plate 21 and the second mounting plate 22.

[0041] like Figure 1 , Figure 9-10 As shown, in the sliding installation structure of the slide plate 24 of this embodiment, a straight slide groove 212 is provided on the first mounting plate 21 of the bracket 20, and a straight first sliding rib 245 is provided on the slide plate 24, and the first sliding rib 245 is slidably inserted into the slide groove 212. Further, a sink groove 213 is provided on the bottom wall of one end of the slide groove 212, and an L-shaped second sliding rib 246 is provided on the slide plate 24, and the root of the second sliding rib 246 is slidably inserted into the slide groove 212, and the end of the second sliding rib 246 extends out of the slide groove 212 through the sink groove 213, and cooperates with the first mounting plate 21 of the bracket 20 to prevent the slide plate 24 from falling off from the bracket 20.

[0042] The action process of the auxiliary contact driving structure of this embodiment is as follows:

[0043] like Figure 3As shown, when the operating member 23 rotates from the opening position to the closing position, that is, the main contact system switches from the disconnected state to the closed state, the operating member 23 rotates around the operating member shaft 25, and the driving protrusion 231 of the operating member 23 drives the slide plate 24 to move leftward along the slide groove 212 by pushing the first passive side wall 243 of the slide plate 24, and the block 241 on the slide plate 24 pushes the passive arm 121 of the push rod 12, so that the push rod 12 rotates clockwise around the circular axis 1222, so that the pressing arm 123 of the push rod 12 presses the passive part 151 of the auxiliary contact support 15 to make the auxiliary contact support 15 move upward, and the auxiliary moving contact 14 moves upward with the auxiliary contact support 15 to close with the auxiliary static contact 13, that is, the auxiliary contact group 10 switches to the closed state.

[0044] like Figure 5 As shown, when the operating member 23 rotates from the closing position to the opening position, that is, the main contact system switches from the closed state to the disconnected state, the operating member 23 rotates in the opposite direction around the operating member shaft 25, and the driving protrusion 231 of the operating member 23 drives the slide plate 24 to move rightward along the slide groove 212 by pushing the second driven side wall 244 of the slide plate 24, so that the slide plate 24 cannot suppress the auxiliary contact support 15 through the push rod 12 (the pressing arm 123 of the push rod 12 is in contact with the driven part 151 of the auxiliary contact support 15, but there is no upward pressure or the pressure is less than the elastic force of the reset spring 16), so that the auxiliary contact support 15 moves downward under the action of the reset spring 16, and the auxiliary moving contact 14 moves downward with the auxiliary contact support 15 to be disconnected from the auxiliary static contact 13, that is, the auxiliary contact group 10 switches to the disconnected state, and at the same time, under the action of the reset spring 16, the push rod 12 rotates counterclockwise around the circular axis 1222 to reset.

[0045] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0046] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An auxiliary contact driving structure, comprising an auxiliary contact system (1) and an operating mechanism (2) for driving a switch electrical appliance to open or close, the auxiliary contact system (1) comprising an auxiliary contact group (10) and a push rod (12) for driving the auxiliary contact group (10) to switch between an open and closed state, the auxiliary contact group (10) comprising a matching auxiliary static contact (13) and an auxiliary moving contact (14), the operating mechanism (2) comprising a bracket (20) and an operating member (23) rotatably mounted on the bracket (20), Features: The operating mechanism (2) further comprises a slide plate (24) slidably mounted on the bracket (20); the operating member (23) can be switched between a closing position and an opening position, and the operating member (23) is driven to cooperate with the push rod (12) via the slide plate (24); when the operating member (23) is rotated to the closing position or the opening position, the operating member (23) drives the slide plate (24), so that the slide plate (24) drives the auxiliary contact group (10) to switch the opening and closing states via the push rod (12).

2. The auxiliary contact driving structure according to claim 1, Features: The auxiliary contact system (1) further comprises an auxiliary contact support (15) and a reset spring (16) for providing an elastic reset force for the auxiliary contact support (15); the auxiliary movable contact (14) is mounted on the auxiliary contact support (15); and the push rod (12) cooperates with the auxiliary contact support (15); When the operating member (23) is rotated to the closing position, the operating member (23) drives the slide plate (24) to push the push rod (12), so that the push rod (12) pushes the auxiliary contact support (15) to overcome the elastic force of the reset spring (16) to move, so that the auxiliary moving contact (14) moves with the auxiliary contact support (15) to close with the auxiliary static contact (13); when the operating member (23) is rotated to the opening position, the operating member (23) drives the slide plate (24) to release the push rod (12), so that the push rod (12) and the auxiliary contact support (15) are reset under the action of the reset spring (16), so that the auxiliary moving contact (14) moves with the auxiliary contact support (15) to disconnect with the auxiliary static contact (13).

3. The auxiliary contact driving structure according to claim 2, Features: The rotation axis direction of the operating member (23) is parallel to the movement direction of the auxiliary contact support (15), and the movement direction of the slide plate (24) is perpendicular to the movement direction of the auxiliary contact support (15) and perpendicular to the rotation axis direction of the push rod (12).

4. The auxiliary contact driving structure according to any one of claims 1 to 3, Features: The slide plate (24) is located below the auxiliary contact system (1), and the slide plate (24) is provided with a stopper (241) extending upward, and the push rod (12) includes an actuated arm (121) drivingly matched with the stopper (241); when the operating member (23) rotates toward the closing position, the actuated arm (121) of the push rod (12) is on the movement track of the stopper (241) of the slide plate (24); when the operating member (23) rotates toward the opening position, the stopper (241) moves in a direction away from the actuated arm (121).

5. The auxiliary contact driving structure according to claim 4, Features: The push rod (12) further comprises a push rod rotating portion (122) which is rotatably arranged and a pressing arm (123) which presses against an auxiliary contact support (15) of the auxiliary contact system (1), wherein the pressing arm (123) and the driven arm (121) are respectively connected to the side walls of the push rod rotating portion (122).

6. The auxiliary contact driving structure according to claim 1, Features: The slide plate (24) is provided with an activated groove (242), the activated groove (242) having a first activated side wall (243) and a second activated side wall (244); a driving protrusion (231) extending into the activated groove (242) is provided on a side of the operating member (23) facing the slide plate (24); when the operating member (23) rotates toward a closing position, the first activated side wall (243) of the slide plate (24) is on a movement track of the driving protrusion (231) of the operating member (23); when the operating member (23) rotates toward an opening position, the second activated side wall (244) of the slide plate (24) is on a movement track of the driving protrusion (231) of the operating member (23).

7. The auxiliary contact driving structure according to claim 1, Features: The bracket (20) comprises a first mounting plate (21) and a second mounting plate (22) which are arranged at an interval, the slide plate (24) is slidably mounted on the outer side of the first mounting plate (21), the first mounting plate (21) is provided with an escape hole (211), the operating member (23) is rotatably mounted between the first mounting plate (21) and the second mounting plate (22) via an operating member rotating shaft (25), and the driving protrusion (231) of the operating member (23) passes through the escape hole (211) and extends into the driven groove (242) of the slide plate (24).

8. The auxiliary contact driving structure according to claim 1, Features: The bracket (20) is provided with a straight sliding groove (212), and the slide plate (24) is provided with a straight first sliding rib (245), and the first sliding rib (245) is slidably inserted into the sliding groove (212).

9. The auxiliary contact driving structure according to claim 8, Features: A recessed groove (213) is provided on the bottom wall at one end of the slide groove (212); an L-shaped second sliding rib (246) is provided on the slide plate (24); the root of the second sliding rib (246) is slidably inserted into the slide groove (212); the end of the second sliding rib (246) extends out of the slide groove (212) through the recessed groove (213) and is limitedly matched with the first mounting plate (21) of the bracket (20).

10. Switching electrical appliances, Features: It comprises a main contact system and an auxiliary contact drive structure as described in any one of claims 1 to 9, and when an operating member (23) of an operating mechanism (2) of the auxiliary contact drive structure rotates to a closing position or an opening position, the operating mechanism (2) drives the main contact system to switch an open or closed state.

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