Auxiliary switch device and change-over switch, electrical appliance

By employing a design that links microswitches and bracket components in the changeover switch, the space occupied by the auxiliary switch is solved, achieving the effects of structural simplification and volume reduction.

CN119724970BActive Publication Date: 2026-05-19SHANGHAI LIANGXIN ELECTRICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI LIANGXIN ELECTRICAL CO LTD
Filing Date
2023-09-28
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In existing changeover switches, the auxiliary switch structure occupies extra space, increasing the size of the product.

Method used

The design employs a linkage between a micro switch and a support assembly, where the support assembly triggers the micro switch to execute a preset operation, simplifying the internal structure of the changeover switch.

Benefits of technology

It effectively simplifies the overall structure of the changeover switch, reduces the size of the product, and simplifies the triggering process.

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Abstract

The application provides an auxiliary switch device and a change-over switch and an electric device, and relates to the technical field of low-voltage electrical apparatuses, comprising at least one micro switch, at least one support assembly corresponding to the at least one micro switch, and the support assembly is used for triggering the micro switch. The micro switch is linked with the support assembly, the micro switch is triggered through the action of the support assembly, and a preset operation is performed; the application adopts the support assembly to trigger the micro switch, the triggering process is simple, and the overall structure of the device can be effectively simplified.
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Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to an auxiliary switching device, a changeover switch, and electrical equipment. Background Technology

[0002] A changeover switch is a low-voltage switch that switches between multiple circuits. Multiple moving contacts are welded onto the switch's shaft. As the shaft rotates, the moving contacts sequentially connect or disconnect with the stationary contacts, switching the circuit. The changeover switch also has an auxiliary switch to provide information on the open / closed status of the main power supply and backup power supply, as well as signal input to the controller.

[0003] In the process of conceiving and implementing this application, the inventors discovered at least the following problems: In some implementations, the changeover switch is mostly equipped with a dedicated structure for triggering auxiliary contacts or auxiliary switches, which occupies the space of the changeover switch and increases the size of the product.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide an auxiliary switching device, a changeover switch, and an electrical appliance that do not occupy additional space and simplify the internal structure of the changeover switch, in order to address the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In one aspect of this application, an auxiliary switching device is provided, comprising: at least one micro switch and at least one support assembly corresponding to the at least one micro switch, wherein the support assembly is used to trigger the corresponding micro switch to perform a preset operation.

[0008] Optionally, the preset operation includes at least one of the following:

[0009] Obtain the closed / open status of the changeover switch;

[0010] Obtain the fault status of the changeover switch;

[0011] Obtain real-time operating data information of the switch.

[0012] Optionally, the actuator may include two support assemblies, which are respectively disposed on both sides of the actuator.

[0013] Optionally, the two bracket assemblies are respectively located on both sides of the input component of the actuator. The bracket assembly is linked with the input component. The position state of the bracket assembly is determined by the position state of the input component, so as to trigger the micro switch to perform the preset operation.

[0014] Optionally, the support assembly includes a spring support pivotally mounted on a first side plate inside the mask, and the actuator includes an energy storage spring sleeved on the spring support for driving the contact device to perform state transitions. The spring support and the input element are linked together.

[0015] Optionally, the actuator further includes a spring push rod and a spring guide rod disposed between the spring bracket and the input component. The spring push rod is rotatably connected to the input component, and one end of the spring guide rod is rotatably connected to the spring push rod, while the other end passes through the spring bracket.

[0016] Optionally, the input component is disposed on the main side plate inside the mask and connected to the contact device. The first side plate and the main side plate are at least partially parallel. The spring push rod is sleeved on the main shaft of the input component. The spring push rod and the spring guide rod are connected by a connecting shaft.

[0017] Optionally, a gear component is also sleeved on the main shaft. The gear component is disposed on a second side plate, which is parallel to the side of the first side plate away from the main side plate. One end of the connecting shaft is disposed in a limiting groove on the input component, and the other end is disposed in an arc-shaped groove on the back of the gear component.

[0018] Optionally, the spring guide rod has a rod portion, and a slot is formed inside the spring bracket. The rod portion of the spring guide rod and the slot are inserted into each other to engage the spring bracket and the spring guide rod.

[0019] Optionally, a trigger portion is formed on the spring bracket, and a boss is provided on the micro switch. When the trigger portion and the boss abut against each other, the micro switch is triggered.

[0020] In another aspect of the embodiments of this application, a changeover switch is provided, including the auxiliary switching device as described above.

[0021] In another aspect of the embodiments of this application, an electrical device is provided, the electrical device including the changeover switch as described above.

[0022] The beneficial effects of this application include:

[0023] This application provides an auxiliary switching device, a changeover switch, and an electrical appliance, which has at least one micro switch. The micro switch is linked with at least one support assembly. The micro switch is triggered by the action of the support assembly to perform a preset operation. This application uses a support assembly to trigger the micro switch, which simplifies the triggering process and effectively simplifies the overall structure of the device.

[0024] When electrical equipment is equipped with the aforementioned changeover switch, and this changeover switch is applied to the electrical equipment, the electrical equipment can be used for whole-house intelligence, and applied to the smart home and Internet of Things industries to achieve whole-house intelligent management. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of an auxiliary switching device provided in an embodiment of this application;

[0027] Figure 2 This is a second schematic diagram of an auxiliary switching device provided in an embodiment of this application;

[0028] Figure 3 This is the third schematic diagram of an auxiliary switching device provided in the embodiments of this application;

[0029] Figure 4 This is the fourth schematic diagram of an auxiliary switching device provided in the embodiments of this application;

[0030] Figure 5 A schematic diagram of a spring-loaded rod structure for an auxiliary switching device provided in an embodiment of this application;

[0031] Figure 6 A schematic diagram of a spring guide rod structure for an auxiliary switching device provided in an embodiment of this application;

[0032] Figure 7 A schematic diagram of a spring bracket structure for an auxiliary switching device provided in an embodiment of this application;

[0033] Figure 8 A schematic diagram of the gear structure of an auxiliary switching device provided in this application embodiment;

[0034] Figure 9 This is a schematic diagram of a changeover switch provided in an embodiment of this application.

[0035] Icons: 10-Actuator; 10a-Main side plate; 11-Mask; 12-Gear; 12a-Arc groove; 13-Second side plate; 14-First side plate; 15-Input component; 15a-Limit groove; 21-Handle; 22-Manual component; 30-Contact device; 30a-Main spindle; 40-Micro switch; 40a-Boss; 41-Bracket assembly; 410-Spring bracket; 410a-Bracket hole; 410b-Slot; 410c-Spring handle; 410d-Spring rod; 410e-Trigger part; 411-Storage spring; 412-Spring guide rod; 412a-Rod part; 412b-Guide rod hole; 413-Spring push rod; 413a-Push rod main hole; 413b-Push rod side hole; 414-Connecting shaft. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Please refer to Figure 1 , Figure 2 As shown, in one aspect of this application embodiment, an auxiliary switching device is provided, which can be applied to a dual power transfer switch. The auxiliary switching device includes at least one micro switch 40 and at least one bracket assembly 41 corresponding to the at least one micro switch 40. The bracket assembly 41 is used to trigger the corresponding micro switch 40 to perform a preset operation.

[0043] For example, when applied to a dual-power transfer switch, the micro switch 40 generally includes two micro switches 40, namely a spare micro switch 40 and a normal micro switch 40, corresponding to the spare power supply and the normal power supply respectively. Correspondingly, the two bracket assemblies 41 are a spare bracket assembly 41 and a normal bracket assembly 41, also corresponding to the spare power supply and the normal power supply respectively.

[0044] The support assembly 41 actuates to trigger the micro switch 40; correspondingly, the spare support assembly 41 triggers the spare micro switch 40, and the primary support assembly 41 triggers the primary micro switch 40. After being triggered, the micro switch 40 transmits a signal to the controller to execute a preset operation.

[0045] The preset operations include at least one of the following:

[0046] Obtain the closed / open status of the changeover switch;

[0047] Obtain the fault status of the changeover switch;

[0048] Obtain real-time operating data information of the switch.

[0049] Furthermore, two support assemblies 41 are respectively disposed on both sides of the actuator 10. In this application, as... Figure 4As shown, the two support assemblies 41 are located on both sides of the input component 15 of the actuator 10. Correspondingly, the two micro switches 40 are also located on both sides of the input component 15 of the actuator 10. By utilizing the space on both sides of the input component 15 of the actuator 10, the situation in the prior art where the length of the switch is increased by triggering through the spindle 30a is avoided.

[0050] Two support assemblies 41 are located on both sides of the input component 15 of the actuator 10. The support assembly 41 is linked with the input component 15. The position state of the support assembly 41 is determined by the position state of the input component 15, so as to trigger the micro switch 40 to perform the preset operation.

[0051] The input element 15 of the actuator 10 is connected to the contact head device 30, such as Figure 2 As shown, a handle 21 is connected to a manual operating component 22. The handle 21 drives the manual operating component 22 to rotate. The manual operating component 22 and the gear component 12 are connected by gear transmission. The gear component 12 is coaxially driven with the input component 15 of the actuator 10, which in turn drives the input component 15 of the actuator 10 to rotate, thereby driving the contact device 30 to open and close. When the input component 15 is activated, it drives the contact device 30 and simultaneously drives the support assembly 41 to move, thereby triggering the micro switch 40 on the corresponding side.

[0052] Therefore, the auxiliary switching device provided in this application embodiment has two micro switches 40, namely a spare micro switch 40 and a regular micro switch 40. The spare micro switch 40 is linked with the spare support assembly 41, and the regular micro switch 40 is linked with the regular support assembly 41. The action of the spare support assembly 41 triggers the spare micro switch 40, and the action of the regular support assembly 41 triggers the regular micro switch 40, so as to obtain the status of the spare power supply and the regular power supply, or perform other preset operations. This application uses the support assembly 41 to trigger the micro switch 40, which simplifies the triggering process and effectively simplifies the overall structure of the device. The support assembly 41 and the micro switch 40 are arranged on both sides of the input part 15 of the actuator 10, utilizing the space on both sides of the input part 15 without occupying other space, effectively reducing the size of the product.

[0053] Specifically, such as Figure 3 As shown, the support assembly 41 includes a spring support 410 pivotally mounted on the first side plate 14 inside the mask 11, and the actuator 10 includes an energy storage spring 411 sleeved on the spring support 410 for driving the contact device 30 to perform state transitions. The spring support 410 and the input component 15 are linked together.

[0054] like Figure 7As shown, the spring bracket 410 is provided with a bracket hole 410a, and pivots on the first side plate 14 through the bracket hole 410a; the energy storage spring 411 is sleeved on the spring bracket 410 and connected to the input component 15. Under the drive of external force, the actuator 10 can be in three states: normal closing, double opening, and standby closing. The spring bracket 410 is pivotally mounted on the first side plate 14. When the mechanism performs closing and opening operations, the spring bracket 410 moves with the energy storage spring 411. When the normal side is closed, the energy storage spring 411 on the normal side rotates through a certain angle. At this time, the trigger part provided on the normal side spring bracket 410 triggers the micro switch 40 on the normal side. When the standby side is closed, the energy storage spring 411 on the standby side rotates through a certain angle. At this time, the trigger part provided on the standby side spring bracket 410 triggers the micro switch 40 on the standby side.

[0055] For example, such as Figure 7 As shown, the spring bracket 410 forms a pistol-like structure, which has a spring handle 410c and a spring rod 410d. The bracket hole 410a is provided on the spring handle 410c to connect with the first side plate 14. The bottom end of the spring handle 410c forms a trigger part 410e to trigger the micro switch 40. The spring rod 410d has a cylindrical structure, and the energy storage spring 411 is sleeved on the spring rod 410d.

[0056] When the spring bracket 410 and the micro switch 40 are triggered, a trigger part 410e is formed on the spring bracket 410, and a boss 40a is provided on the micro switch 40. When the trigger part 410e and the boss 40a abut against each other, the micro switch 40 is triggered to change the state of the auxiliary switching device.

[0057] Figure 4 The end of the spring bracket 410 facing the micro switch 40, that is, the bottom end of the spring handle 410c, forms a trigger part 410e. When the spring bracket 410 rotates until its trigger part 410e abuts against the boss 40a of the micro switch 40, the micro switch 40 can be triggered. When the spring bracket 410 rotates until the trigger part 410e and the boss 40a separate, the triggering state of the micro switch 40 is released.

[0058] Furthermore, the actuator 10 also includes a spring push rod 413 and a spring guide rod 412 disposed between the spring bracket 410 and the input member 15. The spring push rod 413 is rotatably connected to the input member 15, and one end of the spring guide rod 412 is rotatably connected to the spring push rod 413, while the other end passes through the spring bracket 410.

[0059] like Figure 5As shown, the spring push rod 413 forms a U-shaped groove structure. The two spring push rods 413 are nested together and connected to the first side plate 14 through a main shaft 30a passing through the push rod main hole 413a. The main shaft 30a is also connected to the input component 15, so that the input component 15 and the two spring push rods 413 can rotate relative to the first side plate 14.

[0060] For the spring guide rod 412 on one side, one end of the spring guide rod 412 passes through the corresponding spring push rod 413 and is connected by a connecting shaft 414 passing through the push rod side hole 413b of the spring push rod 413. The connecting shaft 414 also passes through the arc-shaped groove 12a on the back of the gear component 12, so that when the spring guide rod 412 and the spring push rod 413 move, the connecting shaft 414 can move within the arc-shaped groove 12a of the gear component 12. The other end of the spring guide rod 412 passes through the spring bracket 410, and an energy storage spring 411 is sleeved on the spring bracket 410, extending to the position of the spring push rod 413. The other end of the spring bracket 410 is provided with a trigger part for triggering the micro switch 40 below.

[0061] In one embodiment, a slot 410b is formed within the spring support 410, such as Figure 6 As shown, the spring guide rod 412 has a rod portion 412a, which is inserted into the slot 410b of the spring bracket 410 to engage the spring bracket 410 and the spring guide rod 412.

[0062] For example, the slot 410b formed by the spring bracket 410 is a cross-shaped slot, and the rod portion 412a of the spring guide rod 412 is also cross-shaped. Through the cross-shaped insertion and engagement of the rod portion 412a and the slot 410b, the spring guide rod 412 and the spring bracket 410 can be stably connected. The end of the spring guide rod 412 has a guide rod hole 412b for corresponding connection with the connecting shaft 414.

[0063] like Figure 4 As shown, for the input component 15 of the actuator 10, the input component 15 is disposed on the main side plate 10a inside the mask 11 and connected to the contact device 30. The gear component 12 is disposed on the second side plate 13. The gear component 12 and the input component 15 are connected through the main shaft 30a. The first side plate 14, the second side plate 13, and the main side plate 10a are arranged sequentially and at least partially parallel. The spring bracket 410 is disposed on the first side plate 14. The triggering part of the spring bracket 410 is also clamped between the first side plate 14 and the second side plate 13. The spring push rod 413 is sleeved on the main shaft 30a. The spring push rod 413 and the spring guide rod 412 are connected through the aforementioned connecting shaft 414.

[0064] The second side plate 13 is parallel to the first side plate 14, and a clamping space is formed between the first side plate 14 and the second side plate 13. Two spring brackets 410 and two micro switches 40 are located in this clamping space. The input element 15 is pivotally mounted on the main side plate 10a, and the input element 15 drives the contact device 30 to perform opening and closing operations.

[0065] One end of the connecting shaft 414 is located in the limiting groove 15a on the front of the input component 15, and the other end is located in... Figure 8 The gear component 12 is located in the arc-shaped groove 12a on the back side.

[0066] For example, the first side plate 14, the second side plate 13, and the main side plate 10a are arranged in parallel in sequence. The gear component 12 and the input component 15 are arranged in parallel and coaxially. One end of the connecting shaft 414 is disposed in the arc-shaped groove 12a on the back of the gear component 12, and the other end passes through the limiting groove 15a on the front of the input component 15. The limiting groove 15a is also arc-shaped, so that the connecting shaft 414 can be limited to move along the arc-shaped groove 12a on the back of the gear component 12 and the limiting groove 15a of the input component 15.

[0067] For example, there are two limiting grooves 15a on the input component 15, which are symmetrically arranged on both sides of the main shaft 30a; correspondingly, there are two arc-shaped grooves 12a and two connecting shafts 414 on the back of the gear component 12, which are also symmetrically arranged on both sides of the main shaft 30a. The arc-shaped grooves 12a and the connecting shafts 414 are arranged on the same side as the limiting grooves 15a.

[0068] In summary, the auxiliary switch device provided in this application embodiment can be operated by a handle 21 to rotate a manual component 22. The manual component 22 and the gear component 12 are driven by gears, and the gear component 12 and the input component 15 of the drive actuator 10 rotate coaxially. When the input component 15 rotates, the actuator 10 can be in three states: normal closing, double opening, and standby closing. When the mechanism performs closing or opening operations, the input component 15 drives the spring bracket 410 to actuate, thereby triggering the micro switch 40 on the corresponding side to obtain the power status of the corresponding side or perform other preset operations. Using the spring bracket 410 to trigger the micro switch 40 simplifies the triggering process and effectively simplifies the overall structure of the device. Compared to existing triggering structures, this application uses a spring bracket 410 to trigger the micro switch 40, which is simple in structure and reduces the number of triggering parts. The spring bracket 410 and the micro switch 40 are arranged on both sides of the input component 15 of the actuator 10, utilizing the symmetrical space on both sides of the input component 15, without increasing the product volume, reducing space occupation, and reducing the length of the product in the direction of the main shaft 30a. Figure 6 (Dimensions in the top and bottom directions)

[0069] On the other hand, such as Figure 9 As shown in the embodiments of this application, a changeover switch is also disclosed, including any of the auxiliary switching devices mentioned above.

[0070] In the changeover switch, the input element 15 of the actuator 10 is connected to the contact device 30, and the input element 15 drives the contact device 30 to perform opening and closing operations; the input element 15 of the actuator 10 can also trigger the micro switch 40 through the spring bracket 410 to obtain the status of the normal power supply and the standby power supply, or to perform other preset operations.

[0071] This changeover switch has the same structure and beneficial effects as the auxiliary switching device in the foregoing embodiments. The structure and beneficial effects of the auxiliary switching device have been described in detail in the foregoing embodiments and will not be repeated here.

[0072] This application also provides an electrical device equipped with the aforementioned changeover switch. The electrical device can be configured as at least one of the following: a distribution box, cable, distribution cabinet, motor, switch socket, lamp, air conditioner, electric water heater, electricity meter, camera, telephone, computer, etc. These electrical devices can utilize the changeover switch structure of this application to achieve intelligent management, but are not limited to the intelligent management electrical devices described above; they can also be used in non-intelligent electrical devices in traditional industries.

[0073] This application also provides an electrical device in which the aforementioned changeover switch is applied. The electrical device can be used for whole-house intelligence and applied to the smart home and Internet of Things industries to achieve whole-house intelligent management.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An auxiliary switching device, characterized in that, The device includes at least one micro switch (40) and at least one bracket assembly (41) corresponding to the at least one micro switch (40), the bracket assembly (41) being used to trigger the micro switch (40) to perform a preset operation; it also includes two bracket assemblies (41), the two bracket assemblies (41) being respectively disposed on both sides of the input element (15) of the actuator (10); each bracket assembly (41) includes a spring bracket (410) pivotally disposed on a first side plate (14) inside the mask (11), and the actuator (10) includes a spring bracket sleeved on the input element (15) of the mask (10). The energy storage spring (411) on the spring bracket (410) is used to drive the contact device (30) to perform state transition. The spring bracket (410) and the input device (15) are linked together. The spring bracket (410) and the input device (15) are also provided between the spring bracket (410) and the input device (15). The spring top rod (413) is rotatably connected to the input device (15). One end of the spring guide rod (412) is rotatably connected to the spring top rod (413), and the other end passes through the spring bracket (410).

2. The auxiliary switching device as described in claim 1, characterized in that, The preset operation includes at least one of the following: Obtain the closed / open status of the changeover switch; Obtain the fault status of the changeover switch; Obtain real-time operating data information of the switch.

3. The auxiliary switching device as described in claim 1, characterized in that, The bracket assembly (41) is linked with the input component (15). The position state of the bracket assembly (41) is determined by the position state of the input component (15) so as to trigger the micro switch (40) to perform the preset operation.

4. The auxiliary switching device as described in claim 1, characterized in that, The input component (15) is disposed on the main side plate (10a) inside the mask (11) and connected to the contact device (30). The first side plate (14) and the main side plate (10a) are at least partially parallel. The spring push rod (413) is sleeved on the main shaft (30a) of the input component (15). The spring push rod (413) and the spring guide rod (412) are connected by a connecting shaft (414).

5. The auxiliary switching device as described in claim 4, characterized in that, The main shaft (30a) is also fitted with a gear component (12), which is disposed on the second side plate (13). The second side plate (13) is disposed parallel to the side of the first side plate (14) away from the main side plate (10a). One end of the connecting shaft (414) is disposed in the limiting groove (15a) on the input component (15), and the other end is disposed in the arc groove (12a) on the back of the gear component (12).

6. The auxiliary switching device as described in claim 1, characterized in that, The spring guide rod (412) has a rod portion (412a), and a slot (410b) is formed in the spring bracket (410). The rod portion (412a) of the spring guide rod (412) and the slot (410b) are inserted into each other to make the spring bracket (410) and the spring guide rod (412) engage.

7. The auxiliary switching device as described in claim 1, characterized in that, The spring bracket (410) is provided with a trigger part (410e), and the micro switch (40) is provided with a boss (40a). When the trigger part (410e) abuts against the boss (40a), the micro switch (40) is triggered.

8. A changeover switch, characterized in that, Includes the auxiliary switching device as described in any one of claims 1 to 7.

9. An electrical appliance, characterized in that, The electrical equipment includes the changeover switch as described in claim 8.