Triggering switch and triggering method

Abstract

This application discloses a trigger switch and a triggering method. The trigger switch includes: a switch base with a receiving seat and a first guide portion; a trigger knob with a second guide portion, the cooperation of the first guide portion and the second guide portion limiting the radial position of the trigger knob; a torsion spring applying an axial force to the trigger knob to move it away from the receiving seat and a circumferential force to rotate it in a first rotation direction; a locking mounting assembly locking the rotation operation of the trigger knob when it moves away from the switch base; and a micro switch connected to the switch base. Applying an external force in the first direction to the trigger knob can release the locking mounting assembly, and applying an external force in the second direction to the trigger knob can overcome the circumferential force of the torsion spring, causing the trigger knob to rotate by a preset angle in a second rotation direction opposite to the first rotation direction, triggering the micro switch. The advantage of this application is that the provided trigger switch has a locking function, which can prevent accidental operation.

Description

Technical Field

[0001] This application belongs to the technical field of kitchen appliances, specifically relating to a trigger switch and a triggering method. Background Technology

[0002] Garbage disposers typically incorporate various electronic components. Some of these components, such as wireless switches, require trigger switches to send trigger signals. However, existing trigger switches have a limited range of triggering methods, which can easily lead to erroneous operation. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this application provides a trigger switch and a triggering method to improve the technical problem that the existing trigger switches have a single triggering mode and are prone to misoperation. The specific technical solution is as follows:

[0004] To achieve the above objectives and other related objectives, this application provides a trigger switch, comprising:

[0005] A switch holder, wherein a receiving seat is provided on the switch holder, and a first guide portion is provided at the center of the receiving seat;

[0006] A trigger knob, wherein the trigger knob is provided with a second guide portion that cooperates with the first guide portion, and the cooperation between the first guide portion and the second guide portion restricts the radial position of the trigger knob;

[0007] A torsion spring is disposed within the receiving seat. One end of the torsion spring abuts against the switch seat and the other end abuts against the trigger knob. The torsion spring applies an axial force to the trigger knob to move it away from the receiving seat and a circumferential force to rotate the trigger knob relative to the receiving seat in a first rotation direction.

[0008] A locking mounting assembly is provided, wherein the trigger knob is connected to the switch base via the locking mounting assembly, and the locking mounting assembly is capable of locking the rotation operation of the trigger knob when the trigger knob is moved away from the switch base;

[0009] A micro switch is connected to the switch base;

[0010] Specifically, applying an external force in a first direction to the trigger knob can overcome the axial force of the torsion spring, causing the trigger knob to move a preset distance toward the switch base to release the locking mounting assembly from locking the trigger knob. Then, applying an external force in a second direction to the trigger knob can overcome the circumferential force of the torsion spring, causing the trigger knob to rotate a preset angle in a second rotation direction opposite to the first rotation direction to trigger the micro switch.

[0011] In one example of the trigger switch in this application, the locking mounting assembly includes a plurality of mounting arms, a plurality of first slots, and a plurality of locking slots. The plurality of mounting arms are arranged in a ring on one of the trigger knob and the switch base, and the plurality of first slots and the plurality of locking slots are arranged in a ring on the other of the trigger knob and the switch base. The free ends of the mounting arms form a snap-fit ​​portion. The plurality of mounting arms can pass through the plurality of first slots through elastic deformation and return to their original state before falling into the locking slot. The locking slot limits the circumferential movement of the snap-fit ​​portion.

[0012] In one example of the trigger switch in this application, when a plurality of mounting arms are disposed on the trigger knob, a plurality of first slots and a plurality of locking slots are disposed on the switch base, the plurality of mounting arms are circumferentially spaced around the second guide portion, the plurality of first slots and the plurality of locking slots are circumferentially spaced around the first guide portion, and the plurality of locking slots are disposed on the side of the switch base away from the trigger knob. When an external force in a first direction is applied to the trigger knob, it can overcome the axial force of the torsion spring, causing the trigger knob to move a preset distance toward the switch base. After this, the locking portion of the mounting arm disengages from the locking slot. When an external force in a second direction is applied to the trigger knob, it can overcome the circumferential force of the torsion spring and rotate along the second rotation direction.

[0013] In one example of the trigger switch in this application, the bottom of the locking groove is wedge-shaped, and the snap-fit ​​portion has a wedge-shaped part that mates with the bottom of the locking groove.

[0014] In one example of the trigger switch in this application, the switch base is further provided with a plurality of retaining portions that are respectively connected to the locking groove. The bottom surface of the locking groove is closer to the trigger knob than the top surface of the retaining portion. When the trigger knob rotates in the second rotation direction against the circumferential force of the torsion spring, the snap-fit ​​portion abuts against the retaining portion.

[0015] In one example of the trigger switch in this application, one of the first guide portion and the second guide portion is a guide sleeve, and the other of the first guide portion and the second guide portion is a guide post, which is slidably inserted into the guide sleeve.

[0016] In one example of the trigger switch in this application, the first guide part is a guide sleeve, the second guide part is a guide post, an annular receiving space is formed between the guide sleeve and the receiving seat, and the torsion spring is sleeved on the guide sleeve and located in the receiving space.

[0017] In one example of the trigger switch in this application, the trigger knob is provided with a push rod, and the torsion arm of the torsion spring abuts against the end connected to the trigger knob and the push rod. When the trigger knob rotates a certain angle in the second rotation direction against the circumferential force of the torsion spring, the push rod triggers the trigger switch.

[0018] In one example of the trigger switch in this application, the switch base is provided with a second groove, the push rod passes through the second groove and rotates along the second groove when the trigger knob is rotated, and the trigger switch is disposed on the side of the switch base away from the trigger knob.

[0019] In one example of the trigger switch in this application, the switch base is provided with two parallel and spaced elastic arms for mounting the micro switch, and the free end of the elastic arm is provided with a latching part; the latching part engages with the micro switch to limit the position of the micro switch in the height direction; the switch base is also provided with a protrusion, which is configured to cooperate with the positioning hole of the micro switch to limit the rotation of the micro switch.

[0020] This application also provides a triggering method for the aforementioned trigger switch, comprising the following steps:

[0021] Applying an external force in a first direction to the trigger knob overcomes the axial force of the torsion spring, causing the trigger knob to move a preset distance toward the switch base, thus releasing the locking mounting assembly from locking the trigger knob;

[0022] An external force in a second direction is applied to the trigger knob to overcome the circumferential force of the torsion spring, causing the trigger knob to rotate by a preset angle along the second rotation direction to trigger the micro switch and generate a trigger signal.

[0023] This application also provides a garbage disposal unit that includes the aforementioned trigger switch.

[0024] This application also provides a control method for handling abnormal operating states of household appliances, comprising the following steps:

[0025] When a first type of abnormality occurs, a short press of the trigger switch generates a first trigger signal;

[0026] When a second type of abnormality occurs, press and hold the trigger switch to generate a second trigger signal.

[0027] The advantage of this application lies in the provided trigger switch and triggering method, wherein the trigger switch has a locking function to prevent accidental operation. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a trigger switch according to this application;

[0030] Figure 2 This is a schematic diagram of a trigger switch from another perspective of this application;

[0031] Figure 3 This is an exploded view of a trigger switch according to this application;

[0032] Figure 4 This is a schematic diagram of the trigger knob of a trigger switch according to this application;

[0033] Figure 5 This is a schematic diagram of the trigger knob of a trigger switch according to this application from another perspective;

[0034] Figure 6 This is a schematic diagram of a switch base for a trigger switch according to this application;

[0035] Figure 7 This is a schematic diagram of a switch base for a trigger switch according to this application from another perspective;

[0036] Figure 8 This is a schematic diagram of the interaction between the trigger knob and the switch base of a trigger switch according to this application;

[0037] Figure 9 This is a flowchart of a triggering method for a trigger switch according to this application;

[0038] Figure 10 This is a flowchart of a control method for handling abnormal operating states of a household appliance, as described in this application;

[0039] Switch base 10, receiving base 11, first guide part 12, holding part 13, annular receiving space 14, second groove 15, elastic arm 16, snap-fit ​​part 161, protrusion 17, trigger knob 20, second guide part 21, push rod 22, torsion spring 30, locking mounting assembly 40, mounting arm 41, snap-fit ​​part 411, wedge-shaped part 412, first groove 42, locking groove 43, groove bottom 431, micro switch 50, positioning hole 51. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0041] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Please refer to Figures 1 to 8 This application provides a trigger switch for sending a trigger signal. Specifically, the trigger switch includes: a switch base 10, a trigger knob 20, a torsion spring 30, a locking mounting assembly 40, and a micro switch 50. The switch base 10 is provided with a receiving seat 11, and a first guide portion 12 is provided at the center of the receiving seat 11. The trigger knob 20 is provided with a second guide portion 21 that cooperates with the first guide portion 12. The cooperation between the first guide portion 12 and the second guide portion 21 limits the radial position of the trigger knob 20. The torsion spring 30 is disposed in the receiving seat 11. One end of the torsion spring 30 abuts against the switch base 10 and the other end abuts against the trigger knob 20. The torsion spring 30 applies an axial force to the trigger knob 20 to move the trigger knob 20 away from the receiving seat 11 and a circumferential force to rotate the trigger knob 20 relative to the receiving seat 11 in a first rotation direction. The trigger knob 20 is connected to the switch base 10 via a locking mounting assembly 40, which locks the rotation of the trigger knob 20 when it is moved away from the switch base 10. A micro switch 50 is connected to the switch base 10.

[0044] The trigger switch of this application applies an external force in a first direction to the trigger knob 20, which overcomes the axial force of the torsion spring 30, allowing the trigger knob 20 to move a preset distance toward the switch base 10 to release the locking mounting assembly 40 from locking the trigger knob 20. Applying a second external force to the trigger knob 20 then overcomes the circumferential force of the torsion spring 30, causing the trigger knob 30 to rotate a preset angle in a second rotation direction opposite to the first rotation direction, triggering the micro switch 50. Thus, the trigger switch has a locking function to prevent accidental operation; moreover, the trigger switch has a simple structure and is easy to operate. After the micro switch 50 is triggered, it sends a trigger signal to control related electronic components, thereby enabling operations such as resetting or reprogramming related procedures.

[0045] Please refer to Figure 4 , Figure 6 and Figure 8 The locking mounting assembly 40 includes a plurality of mounting arms 41, a plurality of first slots 42, and a plurality of locking slots 43. The plurality of mounting arms 41 are arranged in a ring on one of the trigger knob 30 and the switch base 10, and the plurality of first slots 42 and the plurality of locking slots 43 are arranged in a ring on the other of the trigger knob 30 and the switch base 10. The free ends of the mounting arms 41 form a snap-fit ​​portion 411. The plurality of mounting arms 41 can pass through the plurality of first slots 42 through elastic deformation and return to their original state before falling into the locking slots 43. The locking slots 43 limit the circumferential movement of the snap-fit ​​portion 411.

[0046] In the embodiments of this application, a plurality of mounting arms 41 are disposed on the trigger knob 30, and a plurality of first slots 42 and a plurality of locking slots 43 are disposed on the switch base 10. Specifically, the plurality of mounting arms 41 are circumferentially spaced around the second guide portion 21, the plurality of first slots 42 and the plurality of locking slots 43 are circumferentially spaced around the first guide portion 12, and the plurality of locking slots 43 are disposed on the side of the switch base 10 away from the trigger knob 20.

[0047] In this way, when the operator applies an external force in the first direction to the trigger knob 20, it can overcome the axial force of the torsion spring 30, causing the trigger knob 30 to move a preset distance toward the switch base 10. Then, the locking part 411 of the mounting arm 41 disengages from the locking groove 43. At this time, when an external force in the second direction is applied to the trigger knob 20, it can overcome the circumferential force of the torsion spring 30 and rotate in the second rotation direction. Finally, the trigger knob presses the micro switch 50 to generate a trigger signal.

[0048] Please refer to Figure 4 and Figure 8In the embodiments of this application, the bottom 431 of the locking groove 43 is wedge-shaped, and the snap-fit ​​portion 411 has a wedge-shaped portion 412 that mates with the bottom 431 of the locking groove 43. The wedge-shaped engagement surface of the snap-fit ​​portion 411 in the locking groove 43 can improve the stability of the engagement between the trigger knob 20 and the switch base 10 and prevent the trigger knob 20 and the switch base 10 from shaking.

[0049] Please refer to Figure 7 and Figure 8 In the embodiments of this application, the switch base 10 also has a plurality of retaining portions 13 respectively connected to the locking groove 43. The bottom surface of the locking groove 43 is closer to the trigger knob 30 than the top surface of the retaining portion 13. When the trigger knob 20 rotates in the second rotation direction against the circumferential force of the torsion spring 30, the engaging portion 411 abuts against the retaining portion 13, and the retaining portion 13 applies pressure to the engaging portion 411 to overcome the pressure of the torsion spring 30 on the trigger knob 20. Thus, when the trigger knob 20 is pressed to disengage the engaging portion 411 from the locking groove 43 and the trigger knob 20 is rotated in the second rotation direction, since the engaging portion 411 and the retaining portion 13 abut against each other, the operator does not need to continuously press the trigger knob 20, thereby improving the operator's ease of operation.

[0050] Please refer to Figures 4 to 6 One of the first guide portion 12 and the second guide portion 21 is a guide sleeve, and the other of the first guide portion 12 and the second guide portion 21 is a guide post, which is slidably inserted into the guide sleeve. Specifically, in the embodiments of this application, the first guide portion 12 is a guide sleeve, the second guide portion 21 is a guide post, and an annular receiving space 14 is formed between the guide sleeve and the receiving seat 11. The torsion spring 30 is sleeved on the guide sleeve and located within the receiving space.

[0051] Please refer to Figures 1 to 5 In the embodiments of this application, the trigger knob 20 is provided with a push rod 22. The torsion arm of the torsion spring 30, which abuts against the end connected to the trigger knob 20, contacts the push rod 22. When the trigger knob 20 rotates a certain angle in the second rotation direction against the circumferential force of the torsion spring 30, the push rod 22 triggers the micro switch 50. Preferably, in the embodiments of this application, the switch base 10 is provided with a second groove 15. The push rod 22 passes through the second groove 15 and rotates along the second groove 15 when the trigger knob 20 rotates. The micro switch 50 is disposed on the side of the switch base 10 away from the trigger knob 20. Disposing of the trigger knob 20 on the side of the switch base 10 away from the trigger knob 20 can reduce the structural complexity between the trigger knob 20 and the switch base 10, and facilitate the structural design of the micro switch 50.

[0052] Please refer to Figure 7In the embodiments of this application, the switch base 10 is provided with two spaced elastic arms 16 for mounting a micro switch 50, and the free end of the elastic arm 16 is provided with a latching part 161. The latching part 161 engages with the micro switch 50 to limit the position of the micro switch 50 in the height direction. The switch base 10 is also provided with a protrusion 17, which is configured to cooperate with the positioning hole 51 of the micro switch 50 to limit the rotation of the micro switch 50.

[0053] Please refer to Figure 9 This application also provides a triggering method for the aforementioned trigger switch, comprising the following steps:

[0054] S1: Applying an external force in the first direction to the trigger knob 20 overcomes the axial force of the torsion spring 30, causing the trigger knob 20 to move a preset distance toward the switch base 10 to release the locking of the trigger knob 20 by the locking mounting assembly 40;

[0055] S2: Applying an external force in the second direction to the trigger knob 20 overcomes the circumferential force of the torsion spring 30, causing the trigger knob 20 to rotate by a preset angle in the second rotation direction to trigger the micro switch 50 to generate a trigger signal.

[0056] This application also provides a garbage disposal unit that includes the aforementioned trigger switch. The garbage disposal unit is controlled by a wireless switch, and a trigger signal can be sent to the wireless switch via the trigger switch 50 for operations such as resetting the wireless switch.

[0057] Please refer to Figure 10 This application also provides a control method for handling abnormal operating states of household appliances, comprising the following steps:

[0058] S10: When a type 1 malfunction occurs in a household appliance, a short press of the trigger switch generates a first trigger signal;

[0059] S20: When a second type of malfunction occurs in a household appliance, press and hold the trigger switch to generate a second trigger signal.

[0060] The relevant modules of the home appliance perform different operations upon receiving the first or second trigger signal. It is understood that the order of these two steps is not fixed.

[0061] Taking the aforementioned garbage disposer that uses the trigger switch 50 of this application as an example, the control method for handling abnormal operating states of the above-mentioned household appliances will be further explained.

[0062] When the waste disposer malfunctions (i.e., a first-type anomaly), an external force in a first direction is applied to the trigger knob 20 to overcome the axial force of the torsion spring 30, causing the trigger knob 20 to move a preset distance toward the switch base 10, thus releasing the lock on the trigger knob 20 by the locking mounting assembly 40. Then, an external force in a second direction is applied to the trigger knob 20 to overcome the circumferential force of the torsion spring 30, causing the trigger knob 20 to rotate a preset angle along a second rotation direction, triggering the micro switch 50 for a first preset time to generate a first trigger signal. Upon receiving the first trigger signal, the relevant modules of the waste disposer complete a program reset.

[0063] When the wireless switch of the garbage disposal unit loses power or is damaged, i.e., when a second type of abnormality occurs, an external force in the first direction is applied to the trigger knob 20 to overcome the axial force of the torsion spring 30, causing the trigger knob 20 to move a preset distance toward the switch base 10 to release the lock on the trigger knob 20 by the locking mounting assembly 40. Then, an external force in the second direction is applied to the trigger knob 20 to overcome the circumferential force of the torsion spring 30, causing the trigger knob 20 to rotate a preset angle along the second rotation direction, triggering the micro switch 50 for a second preset time to generate a second trigger signal. After receiving the second trigger signal, the relevant modules of the garbage disposal unit perform related operations, such as starting the main program and entering the dispensing mode. Furthermore, when the above long press operation is repeated again, the garbage disposal unit closes the main program and exits the dispensing mode.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A trigger switch, characterized in that, Include: A switch holder, wherein a receiving seat is provided on the switch holder, and a first guide portion is provided at the center of the receiving seat; A trigger knob, wherein the trigger knob is provided with a second guide portion that cooperates with the first guide portion, and the cooperation between the first guide portion and the second guide portion restricts the radial position of the trigger knob; A torsion spring is disposed within the receiving seat. One end of the torsion spring abuts against the switch seat and the other end abuts against the trigger knob. The torsion spring applies an axial force to the trigger knob to move it away from the receiving seat and a circumferential force to rotate the trigger knob relative to the receiving seat in a first rotation direction. A locking mounting assembly is provided, wherein the trigger knob is connected to the switch base via the locking mounting assembly, and the locking mounting assembly is capable of locking the rotation operation of the trigger knob when the trigger knob is moved away from the switch base; A micro switch is connected to the switch base; Specifically, applying an external force in a first direction to the trigger knob can overcome the axial force of the torsion spring, causing the trigger knob to move a preset distance toward the switch base to release the locking mounting assembly from locking the trigger knob. Then, applying an external force in a second direction to the trigger knob can overcome the circumferential force of the torsion spring, causing the trigger knob to rotate a preset angle in a second rotation direction opposite to the first rotation direction to trigger the micro switch.

2. The trigger switch according to claim 1, characterized in that, The locking mounting assembly includes a plurality of mounting arms, a plurality of first slots, and a plurality of locking slots. The plurality of mounting arms are arranged in a ring on one of the trigger knob and the switch base, and the plurality of first slots and the plurality of locking slots are arranged in a ring on the other of the trigger knob and the switch base. The free ends of the mounting arms form a snap-fit ​​portion. The plurality of mounting arms can pass through the plurality of first slots through elastic deformation and return to their original state before falling into the locking slot. The locking slot limits the circumferential movement of the snap-fit ​​portion.

3. The trigger switch according to claim 2, characterized in that, When a plurality of mounting arms are disposed on the trigger knob, and a plurality of first slots and a plurality of locking slots are disposed on the switch base, the plurality of mounting arms are circumferentially spaced around the second guide portion, the plurality of first slots and the plurality of locking slots are circumferentially spaced around the first guide portion, and the plurality of locking slots are disposed on the side of the switch base away from the trigger knob. When an external force in a first direction is applied to the trigger knob, it can overcome the axial force of the torsion spring and cause the trigger knob to move a preset distance toward the switch base. After that, the locking part of the mounting arm disengages from the locking slot. When an external force in a second direction is applied to the trigger knob, it can overcome the circumferential force of the torsion spring and rotate along the second rotation direction.

4. The trigger switch according to claim 3, characterized in that, The bottom of the locking groove is wedge-shaped, and the snap-fit ​​part has a wedge-shaped portion that matches the bottom of the locking groove.

5. The trigger switch according to claim 3, characterized in that, The switch base also has several retaining portions that are respectively connected to the locking groove. The bottom surface of the locking groove is closer to the trigger knob than the top surface of the retaining portion. When the trigger knob rotates in the second rotation direction against the circumferential force of the torsion spring, the snap-fit ​​portion abuts against the retaining portion.

6. The trigger switch according to claim 1, characterized in that, One of the first guide portion and the second guide portion is a guide sleeve, and the other of the first guide portion and the second guide portion is a guide post, which is slidably inserted into the guide sleeve.

7. The trigger switch according to claim 6, characterized in that, The first guide part is a guide sleeve, the second guide part is a guide post, and an annular receiving space is formed between the guide sleeve and the receiving seat. The torsion spring is sleeved on the guide sleeve and located within the receiving space.

8. The trigger switch according to claim 1, characterized in that, The trigger knob is equipped with a push rod. The torsion arm in the torsion spring, which abuts against one end of the trigger knob, abuts against the push rod. When the trigger knob rotates a certain angle in the second rotation direction against the circumferential force of the torsion spring, the push rod triggers the trigger switch.

9. The trigger switch according to claim 8, characterized in that, The switch base is provided with a second groove, the push rod passes through the second groove and rotates along the second groove when the trigger knob is rotated, and the trigger switch is located on the side of the switch base away from the trigger knob.

10. The trigger switch according to claim 1, characterized in that, The switch base is provided with two spaced elastic arms for mounting the micro switch, and the free end of the elastic arm is provided with a latching part; the latching part engages with the micro switch to limit the position of the micro switch in the height direction; the switch base is also provided with a protruding post, which is configured to cooperate with the positioning hole of the micro switch to limit the rotation of the micro switch.

11. A triggering method for a trigger switch as described in any one of claims 1-10, characterized in that, Includes the following steps: Applying an external force in a first direction to the trigger knob overcomes the axial force of the torsion spring, causing the trigger knob to move a preset distance toward the switch base, thus releasing the locking mounting assembly from locking the trigger knob; An external force in a second direction is applied to the trigger knob to overcome the circumferential force of the torsion spring, causing the trigger knob to rotate by a preset angle along the second rotation direction to trigger the micro switch and generate a trigger signal.

12. A garbage disposal unit, characterized in that, The waste disposer includes a trigger switch as described in any one of claims 1-10.

13. A control method for handling abnormal operating states of a household appliance, wherein the household appliance comprises a trigger switch as described in any one of claims 1-10, characterized in that, Includes the following steps: When a first type of abnormality occurs, a short press of the trigger switch generates a first trigger signal; When a second type of abnormality occurs, press and hold the trigger switch to generate a second trigger signal.

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