Trigger mechanism and travel switch

Abstract

The application discloses a trigger mechanism and a travel switch, and relates to the technical field of electrical equipment. The trigger mechanism comprises a moving part, a matching part and a trigger part. When a component to be monitored drives the trigger part to move, the gravity of the moving part is overcome by a transmission part, and the moving part is simultaneously driven to move towards the matching part, so that the first conductive surface and the second conductive surface are in contact, and thus the contact is conducted. When the component to be monitored leaves, the gravity of the moving part is greater than the gravity of the trigger part, so that the trigger part is driven to move towards the initial position by the transmission part under the action of the gravity of the moving part, so that the first conductive surface and the second conductive surface are separated, and thus the contact is disconnected. The application realizes the automatic disconnection of the contact through the gravity of the moving part, avoids the spring elasticity failure problem compared with the traditional spring form, significantly prolongs the service life of the travel switch, improves the reliability of the travel switch, and reduces the maintenance and replacement costs caused by spring failure.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a triggering mechanism and a limit switch. Background Technology

[0002] Limit switches are commonly used for switch detection, such as monitoring the status of cabinet doors and detecting the position of structural components. The working principle of limit switches is based on the closing and opening of mechanical contacts. When the displacement component of the limit switch moves to a specific position, it triggers the contact of the limit switch, thereby realizing the on / off control of the circuit. The control system is used to obtain the on / off status of the contact in real time to determine whether the monitored component has been displaced. Currently, most limit switches use springs to provide elasticity to drive the displacement component of the limit switch to reset. However, the elasticity of the spring will decrease over time, and may even fail under certain harsh conditions. This can lead to poor switch contact, functional failure, and low reliability. Utility Model Content

[0003] The main purpose of this application is to propose a triggering mechanism and a limit switch, which aims to improve the problem that the current limit switches, due to the use of spring components, suffer from deterioration in performance and reduced reliability after prolonged use.

[0004] To achieve the above objectives, in a first aspect, this application proposes a triggering mechanism having a first direction extending along its height, the triggering mechanism comprising: A movable component is arranged to move along the first direction, and on the movement trajectory of the movable component, the movable component has a first initial position and a trigger position; A mating component, the mating component being spaced apart on one side of the movable component along the first direction, the movable component having a first conductive surface on the side facing the mating component, and the mating component having a second conductive surface on the side facing the movable component; and A trigger element is arranged to move along the first direction. The movable element and the trigger element are connected by a transmission element. The weight of the movable element is greater than the weight of the trigger element, so that when the trigger element is not subjected to external force, the movable element is in the first initial position. When the trigger element is subjected to external force, it moves a preset distance along the first direction, and the transmission element drives the movable element to move from the first initial position to the trigger position. The movable component moves between the first initial position and the trigger position, causing the first conductive surface and the second conductive surface to contact or separate, thereby switching the triggering state of the triggering mechanism. In one embodiment, in the first direction, the mating member is spaced above the movable member; When the movable component is in the first initial position, the first conductive surface and the second conductive surface are separated; when the movable component is in the trigger position, the first conductive surface and the second conductive surface are in contact.

[0005] In one embodiment, the transmission component includes a gear unit; The movable component has a first tooth system that meshes with the gear unit, and the trigger component has a trigger tooth system that meshes with the gear unit.

[0006] In one embodiment, the gear unit includes a gear, and the rotation axis of the gear extends in a plane perpendicular to the first direction, and both the first gear train and the trigger gear train mesh with the gear; or The gear unit includes at least two gears, at least two of the gears meshing with each other, and the rotation axes of at least two of the gears extend in a plane perpendicular to the first direction. One of the first gear train and the trigger gear train meshes with one of the gears, and the other meshes with the other gear.

[0007] In one embodiment, the mating member is arranged to move along the first direction, and the movement trajectory of the mating member is spaced above the movable member. On the movement trajectory of the mating member, the mating member has a second initial position close to the moving member.

[0008] In one embodiment, the triggering mechanism further includes: A first limiting member is arranged parallel to the movement trajectory of the movable member, and the movable member slides in contact with the first limiting member. The first limiting member guides the movable member to move along a preset trajectory in the first direction. The second limiting member is at least partially arranged parallel to the movement trajectory of the mating member, and the portion of the second limiting member parallel to the movement trajectory of the mating member slides in contact with the mating member. The second limiting member is used to guide the mating member to move along a preset trajectory in the first direction. The second limiting member has a supporting portion for supporting the mating member, and at least a portion of the mating member facing the movable member abuts against the supporting portion to place the mating member in the second initial position.

[0009] In one embodiment, the triggering mechanism further includes a housing, the housing having a mounting cavity, and the movable member, the mating member, and the transmission member are all disposed within the mounting cavity; In the first direction, the movable part abuts against the bottom wall of the mounting cavity on the side opposite to the mating part, so that the movable part is in the first initial position; In the first direction, at least a portion of the trigger extends out of the housing.

[0010] In one embodiment, the triggering mechanism further includes: A first connecting portion is disposed on the outer side wall of the housing, and the first connecting portion is electrically connected to the first conductive surface; and The second connecting part is provided on the outer side wall of the housing, and the second connecting part is electrically connected to the second conductive surface. The first connecting part and the second connecting part are used to connect to the external circuit.

[0011] In one embodiment, the movable member is a conductive structural member, and at least a portion of the movable member facing the mating member forms the first conductive surface; and / or The mating component is a conductive structural component, and at least a portion of the mating component facing the movable component forms the second conductive surface.

[0012] Secondly, this application proposes a limit switch, which includes the triggering mechanism described in the above embodiments.

[0013] The triggering mechanism and limit switch proposed in this application include a movable part, a mating part, and a trigger element. The movable part is arranged to move along the height direction of the triggering mechanism. The trigger element and the movable part are connected by a transmission part, and the weight of the movable part is greater than the weight of the trigger element. When the component to be monitored drives the trigger element to move, the transmission part overcomes the weight of the movable part and synchronously drives the movable part to move towards the mating part, so that the first conductive surface and the second conductive surface come into contact, thereby realizing the contact connection. When the component to be monitored leaves, since the weight of the movable part is greater than the weight of the trigger element, the trigger element is driven to move back to the initial position by the transmission part under the action of the weight of the movable part, so that the first conductive surface and the second conductive surface separate, thereby realizing the contact disconnection. In this application, since the automatic contact disconnection is achieved by the weight of the movable part, compared with the traditional method of using a spring, the problem of spring elasticity failure is avoided, which significantly extends the service life of the limit switch, improves the reliability of the limit switch, and reduces the maintenance and replacement costs caused by spring failure. Attached Figure Description

[0014] 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 the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the limit switch in this application; Figure 2 for Figure 1Schematic diagram of the AA section structure; Figure 3 for Figure 2 A diagram showing the active component in the trigger position; Figure 4 This is a schematic diagram showing the positional relationship of the active parts and mating parts within the housing in this application; Figure 5 This is a schematic diagram showing the connection relationship between the active component, trigger component, and transmission component in this application; Figure 6 This is a schematic diagram of the structure of the first and second limiting members of this application.

[0016] Explanation of icon numbers: 100. Triggering mechanism; 10. Moving part; 11. First conductive surface; 12. First welded part; 20. Mating component; 21. Second conductive surface; 22. Second welded part; 30. Trigger; 40. Housing; 41. Mounting cavity; 42. First connecting part; 43. Second connecting part; 44. Mounting hole; 45. Through hole; 50. Transmission component; 51. Gear; 52. First gear train; 53. Trigger gear train; 60. First limiting component; 70. Second limiting component; 71. Vertical guide part; 72. Support part.

[0017] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0021] Limit switches are commonly used for switch detection, such as monitoring the status of cabinet doors and detecting the position of structural components. The working principle of limit switches is based on the closing and opening of mechanical contacts. When the displacement component of the limit switch moves to a specific position, it triggers the contact of the limit switch, thereby realizing the on / off control of the circuit. The control system is used to obtain the on / off status of the contact in real time to determine whether the monitored component has been displaced. Currently, most limit switches use springs to provide elasticity to drive the displacement component of the limit switch to reset. However, the elasticity of the spring will decrease over time, and may even fail under certain harsh conditions. This can lead to poor switch contact, functional failure, and low reliability.

[0022] Based on this, refer to Figures 1-6 As shown, in a first aspect, embodiments of this application provide a triggering mechanism 100. The triggering mechanism 100 has a first direction Z extending along its height direction. The triggering mechanism 100 includes a movable member 10, a mating member 20, and a triggering member 30. The movable member 10 is movably arranged along the first direction Z. The mating member 20 is disposed on one side of the movable member 10 along the first direction Z. The side of the movable member 10 facing the mating member 20 has a first conductive surface 11, and the side of the mating member 20 facing the movable member 10 has a second conductive surface 21. In the first direction Z, the first conductive surface 11 and the second conductive surface 21 at least partially overlap in the orthographic projection of the triggering mechanism 100. The first conductive surface 11 and the second conductive surface 21 constitute the contact of the triggering mechanism 100. On the movement trajectory of the movable member 10, the movable member 10 has a first initial position and a trigger position.

[0023] In this embodiment, as Figure 2As shown, in the first direction Z, the mating member 20 can be spaced above the moving trajectory of the movable member 10. When the movable member 10 is in the first initial position, the first conductive surface 11 and the second conductive surface 21 are in a separated state. When the movable member 10 is in the trigger position, the first conductive surface 11 and the second conductive surface 21 are in a contact state. Alternatively, the mating member 20 can also be located below the movable member 10, and when the movable member 10 is in the first initial position, the first conductive surface 11 and the second conductive surface 21 are in a contact state, and when the movable member 10 is in the trigger position, the first conductive surface 11 and the second conductive surface 21 are in a separated state.

[0024] In this embodiment, in the first direction Z, if the mating member 20 is spaced above the moving trajectory of the movable member 10, then when the movable member 10 is in the first initial position, the first conductive surface 11 and the second conductive surface 21 are in a disengaged state. When the movable member 10 moves from the first initial position to the trigger position, the first conductive surface 11 and the second conductive surface 21 come into contact, thereby causing the contacts of the trigger mechanism 100 to close. That is, when the contacts of the trigger mechanism 100 are in a closed state, it indicates that the trigger mechanism 100 is in a triggered state.

[0025] like Figure 2 , Figure 3 As shown, the trigger 30 is arranged to move along the first direction Z, and a transmission member 50 is connected between the movable member 10 and the trigger 30. The transmission member 50 is used to transmit power between the movable member 10 and the trigger 30. When the trigger 30 is subjected to an external force (that is, the component to be monitored squeezes the trigger 30), the trigger 30 is driven to move in the first direction Z. The transmission member 50 synchronously drives the movable member 10 to move toward the mating member 20 in the first direction Z. So that when the component to be monitored moves a preset displacement, the transmission member 50 drives the movable member 10 to move from the first initial position to the trigger position.

[0026] Understandably, since the weight of the movable component 10 is greater than the weight of the trigger component 30, the movable component 10 can be in the first initial position under the action of the transmission component 50 when the trigger component 30 is not subjected to external force. Figure 2 In the state shown, the first conductive surface 11 and the second conductive surface 21 are not in contact, so the contact is in the open state.

[0027] In this embodiment, when the trigger 30 is subjected to an external force (i.e., the component to be monitored moves toward and presses the trigger 30), causing it to move in the first direction Z, the transmission component 50 synchronously drives the movable component 10 to move in the first direction Z toward the mating component 20. When the trigger 30 moves a preset distance, the first conductive surface 11 on the movable component 10 and the second conductive surface 21 on the mating component 20 come into contact, thus achieving contact closure (e.g., ...). Figure 3 As shown); the control system obtains the displacement of the monitored component by closing the contact, thereby realizing displacement monitoring of the monitored component; when the trigger 30 is no longer subjected to external force (the monitored component leaves), under the gravity of the movable component 10, the transmission component 50 drives the trigger 30 to move along the first direction Z towards the initial position, so that after the trigger 30 moves to the initial position (reset), the movable component 10 also moves synchronously to the first initial position. At this time, the first conductive surface 11 and the second conductive surface 21 disengage, and the contact is broken (as shown). Figure 2 As shown in the figure, the trigger mechanism 100 completes the reset at this time.

[0028] It is understood that the stroke of the triggering mechanism 100 in this embodiment is related to the initial distance between the first conductive surface 11 and the second conductive surface 21. This initial distance is the distance between the first conductive surface 11 and the second conductive surface 21 when the movable part 10 is in the first initial position. By adjusting the initial distance between the first conductive surface 11 and the second conductive surface 21, the stroke of the triggering mechanism 100 can be changed, thereby meeting different stroke requirements.

[0029] In this embodiment, if the mating member 20 is located below the movable member 10, when the movable member 10 is in the first initial position, the first conductive surface 11 and the second conductive surface 21 are in contact. When the movable member 10 is in the trigger position, the first conductive surface 11 and the second conductive surface 21 are in a separated state. That is, when the contact of the trigger mechanism 100 is in an open state, it indicates that the trigger mechanism 100 is in a triggered state.

[0030] In this way, when the trigger 30 moves a preset distance along the first direction Z under the drive of the component to be monitored, the transmission component 50 drives the movable component 10 to move away from the mating component 20, and the first conductive surface 11 and the second conductive surface 21 change from a contact state to a separation state, thereby realizing the disconnection of the contact of the trigger mechanism 100 and putting the trigger mechanism 100 in a triggered state; when the component to be monitored leaves, under the gravity of the movable component 10, the movable component 10 moves towards the mating component 20, and the transmission component 50 synchronously drives the trigger 30 to move to the initial position, so that the movable component 10 moves to the first initial position, so that the first conductive surface 11 and the second conductive surface 21 contact. At this time, the trigger 30 also moves to the initial position synchronously, and the trigger mechanism 100 is reset.

[0031] It is understandable that the on / off state of the contact formed by the first conductive surface 11 and the second conductive surface 21 is monitored in real time by the control system. Specifically, the contact formed by the first conductive surface 11 and the second conductive surface 21 is connected to a circuit, and the circuit is connected to a power source. Regardless of which of the above methods is adopted for the arrangement between the moving part 10 and the mating part 20, the on / off signal of the circuit can be obtained by the control system, and then the on / off state of the contact can be monitored in real time. This is used to obtain the position state of the component to be monitored, so that when the component to be monitored reaches the preset displacement, the control system triggers and controls the relevant components to perform subsequent operations.

[0032] For example, if the contacts of the trigger mechanism 100 are closed and the trigger mechanism 100 is in a triggered state, the control system will receive a signal indicating that the monitored component has reached a preset displacement amount when the circuit generates a conduction signal. The control system will then trigger and control the relevant components to perform subsequent operations. If the contacts of the trigger mechanism are open and the trigger mechanism is in a triggered state, the control system will receive a signal indicating that the monitored component has reached a preset displacement amount when the circuit generates a disconnection signal. The control system will then trigger and control the relevant components to perform subsequent operations.

[0033] It is understood that the triggering mechanism 100 also includes a frame, and the movable part 10, the mating part 20, the triggering part 30, and the transmission part 50 are all mounted on the frame. The frame is provided with a guide mechanism to guide the movable part 10 and the triggering part 30 to move along the first direction Z. The frame is used to provide a mounting carrier for the movable part 10, the mating part 20, and the triggering part 30.

[0034] It is understood that the trigger 30 in this application needs to be set on the movement trajectory of the component to be monitored so that when the component to be monitored is displaced, the trigger 30 can be squeezed to make the contacts of the trigger mechanism 100 close or open. At this time, the control system obtains that the displacement of the component to be monitored reaches the preset value, and the control system triggers and controls the relevant components to perform subsequent operations.

[0035] In this embodiment, by setting a transmission member 50 between the trigger member 30 and the movable member 10, and making the weight of the movable member 10 greater than the weight of the trigger member 30, the automatic disconnection of the contact is achieved solely by the gravity of the movable member 10 when the monitored component leaves (that is, the trigger mechanism 100 is reset by the gravity of the movable member 10). Compared with the traditional method of using a spring, this solves the problem of spring elasticity failure in the traditional spring reset mechanism, which not only significantly extends the service life of the trigger mechanism 100, but also improves its reliability and reduces the maintenance and replacement costs caused by spring failure.

[0036] It is understandable that the first direction Z can be the direction of gravity of the trigger 30 and the movable part 10, or it can be set at an angle to the direction of gravity of the trigger 30 and the movable part 10, but it cannot be set horizontally, so as to ensure that the contact of the trigger mechanism 100 can be automatically reset under the action of gravity.

[0037] In this embodiment, the resistance when the monitored component drives the trigger 30 to move in the first direction Z depends on the weight of the movable component 10 itself. The greater the weight of the movable component 10, the greater the driving force required for the monitored component to drive the trigger 30 to move in the first direction Z, and vice versa. In this application, the weight of the movable component 10 is the main resistance when driving the trigger 30 to move. The trigger 30 is connected to the movable component 10 through the transmission component 50. When the monitored component applies sufficient driving force, the trigger 30 can overcome the weight of the movable component 10 and drive the movable component 10 to move from the first initial position to the trigger position.

[0038] Understandably, if greater resistance to movement is required, the weight of the moving part 10 can be increased, for example by increasing the thickness or volume of the material; if less resistance to movement is required, the weight of the moving part 10 can be reduced, for example by reducing the thickness or volume of the material.

[0039] Reference Figure 2 , Figure 3As shown, in one embodiment of this application, the mating member 20 is spaced above the movable member 10, so that when the movable member 10 is in the first initial position, the first conductive surface 11 and the second conductive surface 21 are in a separated state, and when the movable member 10 is in the trigger position, the first conductive surface 11 and the second conductive surface 21 are in a contact state, so that the contacts of the trigger mechanism 100 are in a closed state, and the trigger mechanism 100 is triggered.

[0040] In this embodiment, when the trigger member 30 is pressed by the component to be monitored and moves along the first direction Z, the transmission member 50 synchronously drives the movable member 10 to move from bottom to top toward the mating member 20. When the movable member 10 moves from the first initial position to the trigger position, the first conductive surface 11 and the second conductive surface 21 come into contact, and the contacts of the trigger mechanism 100 close, thereby triggering the trigger mechanism 100. The control system obtains the circuit's conduction signal and monitors the state of the contacts in real time to obtain the position state of the component to be monitored. When the component to be monitored reaches a preset displacement, the control system obtains the circuit's conduction signal, causing the control system to trigger and control the relevant components to perform subsequent operations.

[0041] Reference Figure 2 , Figure 3 , Figure 5 As shown, in one embodiment of this application, the transmission member 50 includes a gear unit, the movable member 10 has a first tooth system 52 that meshes with the gear unit, and the trigger member 30 has a trigger tooth system 53 that meshes with the gear unit, thereby realizing the power transmission between the trigger member 30 and the movable member 10 through the gear unit.

[0042] In this embodiment, when the trigger 30 is not subjected to external force (i.e., the monitored component does not press the trigger 30), the movable component 10 is in the first initial position. When the trigger 30 is subjected to external force (i.e., the monitored component moves toward the trigger 30 and presses the trigger 30), the trigger 30 is forced to move along the first direction Z. During the movement of the trigger 30 along the first direction Z, the trigger gear system 53 drives the gear unit to operate synchronously. Through the meshing of the gear unit and the first gear system 52, the movable component 10 is synchronously driven to move from the first initial position to the trigger position. After the monitored component forces the trigger 30 to move a preset distance along the first direction Z, the movable component 10 is synchronously driven to move to the trigger position through the cooperation between the trigger gear system 53, the gear unit, and the first gear system 52, so that the trigger mechanism 100 is in the trigger state.

[0043] Reference Figure 2 , Figure 3 , Figure 5 As shown, in one embodiment of this application, the gear unit includes one gear 51 or at least two gears 51; as Figure 2 , Figure 3 As shown, when the gear unit includes a gear 51, the trigger 30 and the movable member 10 move in opposite directions along the first direction Z. The first gear train 52 and the trigger gear train 53 mesh with the gear 51, and the rotation axis of the gear 51 extends in a plane perpendicular to the first direction Z. At this time, the trigger mechanism 100 can be located below the component to be monitored, thereby enabling the trigger 30 to move synchronously from top to bottom along the first direction Z when the component to be monitored moves from top to bottom toward the trigger 30 and presses the trigger 30. This causes the trigger 30 to move synchronously from top to bottom along the first direction Z, and the trigger gear train 53 drives the meshing gear 51 to move along the first direction Z. Figure 2 As shown, the gear 51 rotates counterclockwise, and the first gear system 52 meshing with it synchronously drives the movable part 10 to move upward in the first direction Z, that is, it drives the movable part 10 to move toward the mating part 20, so that the movable part 10 moves to the trigger position, thereby triggering the trigger mechanism 100.

[0044] It is understood that the rotation axis of gear 51 extends in a plane perpendicular to the first direction Z, and the triggering mechanism also has a second direction Y and a third direction X, wherein the first direction Z, the second direction Y and the third direction X are mutually perpendicular; for example, the rotation axis of gear 51 can extend along the second direction Y or along the third direction X.

[0045] For example, such as Figure 2 , Figure 3 As shown, when the rotation axis of gear 51 extends along the second direction Y, the trigger 30 and the movable member 10 are spaced apart along the third direction X, and gear 51 is positioned between the trigger 30 and the movable member 10; when the rotation axis of gear 51 extends along the third direction X of housing 40, the trigger 30 and the movable member 10 are spaced apart along the second direction Y, and gear 51 is positioned between the trigger 30 and the movable member 10, thereby achieving the effect of transmission between the trigger 30 and the movable member 10.

[0046] Alternatively, when the gear unit includes at least two gears 51, the at least two gears 51 are meshed together. One of the trigger gear system 53 and the first gear system 52 meshes with one of the gears 51, and the other meshes with the other gear 51. At this time, the trigger member 30 and the movable member 10 move in the same direction in the first direction Z. At this time, the trigger mechanism 100 can be located above the component to be monitored. When the component to be monitored moves from bottom to top toward the trigger member 30 and presses the trigger member 30, the trigger gear system 53 on the trigger member 30 cooperates with the first gear system 52 through at least two meshing gears 51, so as to drive the movable member 10 to move synchronously from the first initial position to the trigger position (that is, drive the movable member 10 to move synchronously from bottom to top along the first direction Z). After the trigger member 30 moves a preset distance under the drive of the component to be monitored, the movable member 10 moves from the first initial position to the trigger position, and the trigger mechanism 100 is triggered.

[0047] It is understood that when the gear unit includes at least two gears 51, the rotation axes of the at least two gears 51 extend in a plane perpendicular to the first direction Z. For the specific arrangement, please refer to the above description.

[0048] In this embodiment, when the gear unit includes an odd number of gears 51, the moving directions of the trigger 30 and the movable member 10 are opposite. In this case, the trigger mechanism 100 should be arranged below the component to be monitored. When the gear unit includes an even number of gears 51, the moving directions of the trigger 30 and the movable member 10 are the same. In this case, the trigger mechanism 100 should be arranged above the component to be monitored. In short, as long as it is possible to achieve the synchronous movement of the movable member 10 from the first initial position to the trigger position through the cooperation of the trigger gear system 53, the gear unit, and the first gear system 52 when the component to be monitored squeezes the trigger 30 and forces the trigger 30 to move along the first direction Z, it is sufficient to achieve the same result.

[0049] Reference Figure 2 , Figure 3As shown, in one embodiment of this application, the mating member 20 is moved along the first direction Z, and the movement trajectory of the mating member 20 is spaced above the movable member 10. On the movement trajectory of the mating member 20, the mating member 20 has a second initial position close to the movable member 10; that is, in the initial state (when the trigger member 30 is not subjected to external force), the mating member 20 has a second initial position spaced above the movable member 10. This makes the second conductive surface 21 of the mating member 20 facing the movable member 10 and the first conductive surface 11 of the movable member 10 facing the mating member 20 spaced a certain distance apart in the first direction Z. This enables the first conductive surface 11 and the second conductive surface 21 to contact after the trigger member 30 moves a certain distance along the first direction Z under the drive of the component to be monitored. This causes the contacts of the triggering mechanism 100 to close, and the triggering mechanism 100 to be in a triggered state. The control system triggers and controls the relevant components to perform subsequent operations.

[0050] In this embodiment, the mating component 20 is moved along the first direction Z. Compared with fixing the mating component 20, the hard contact between the first conductive surface 11 and the second conductive surface 21 can be reduced. This can effectively buffer the impact force between the first conductive surface 11 and the second conductive surface 21 when they come into contact, thereby improving the reliability and service life of the triggering mechanism 100.

[0051] It is understandable that the movable arrangement of the mating component 20 along the first direction Z in this application can also improve the fault tolerance of the triggering mechanism 100 to a certain extent, and avoid damage to the triggering mechanism 100 caused by excessive movement of the triggering component 30 under the action of the monitored component. Specifically, when the displacement of the monitored component is too large, the movement of the mating component 20 can buffer the excessive movement of the triggering component 30. That is, after the movable component 10 moves from the first initial position to the trigger position, it will continue to move under the action of the triggering component 30, thus driving the mating component 20 to move synchronously upward in the first direction Z, in order to avoid excessive movement of the monitored component. The movable arrangement of the mating component 20 in the first direction Z in this application, compared with the fixed arrangement of the mating component 20, can reduce the risk of damage to the triggering mechanism 100 caused by excessive movement of the monitored component, thereby improving the use and service life of the triggering mechanism 100.

[0052] Reference Figure 3 , Figure 4 , Figure 6 As shown in one embodiment of this application, the triggering mechanism 100 further includes a first limiting member 60 and a second limiting member 70; wherein, the first limiting member 60 is used to guide the movable member 10 to move along a preset trajectory in the first direction Z; and the second limiting member 70 is used to guide the mating member 20 to move along a preset trajectory in the first direction Z.

[0053] In this embodiment, the second limiting member 70 also has a supporting portion 72 for supporting the mating member 20, thereby causing the mating member 20 to at least partially abut against the upper surface of the supporting portion 72 on the side facing the movable member 10, and thus supporting the mating member 20, thereby placing the mating member 20 in the second initial position.

[0054] It is understandable that the first limiting member 60 can be set in any form, as long as it can guide the movable member 10 to move along the first direction Z and according to the preset trajectory; the second limiting member 70 can be set in any form, as long as it can guide the mating member 20 to move along the first direction Z and according to the preset trajectory.

[0055] Reference Figures 1-4 As shown, in one embodiment of this application, the triggering mechanism 100 further includes a housing 40, which has a mounting cavity 41. The movable member 10, the mating member 20, and the transmission member 50 are all disposed in the mounting cavity 41. That is, the movable member 10 is moved and installed in the mounting cavity 41 along the first direction Z, the mating member 20 is also installed in the mounting cavity 41 along the first direction Z, and the transmission member 50 is also disposed in the mounting cavity 41.

[0056] In this embodiment, as Figure 2 As shown, in the first direction Z, the movable member 10 abuts against the bottom wall of the mounting cavity 41 on the side away from the mating member 20, thereby placing the movable member 10 in the first initial position. That is, the bottom wall of the mounting cavity 41 in the first direction Z supports the movable member 10, and when the trigger member 30 is not subjected to external force, the movable member 10 can abut against the bottom wall of the mounting cavity 41 in the first direction Z, so that the movable member 10 is in the first initial position.

[0057] In this embodiment, by providing a housing 40 and a mounting cavity 41 within the housing 40, the movable part 10 and the mating part 20 are both located within the mounting cavity 41, thereby forming a relatively isolated sealed environment. This reduces the impact of harsh external environments and provides a better working environment for the movable part 10 and the mating part 20, ensuring that the triggering mechanism 100 can work normally even under harsh working conditions.

[0058] It is understandable that by placing the movable part 10 and the mating part 20 in the mounting cavity 41 within the housing 40, the mounting cavity 41 provides a relatively sealed environment, which can effectively protect the first conductive surface 11 on the movable part 10 and the second conductive surface 21 on the mating part 20, reducing the impact of harsh external environments (such as dust, moisture, corrosive gases, etc.), thereby reducing the corrosion of the contacts (first conductive surface 11 and second conductive surface 21) of the triggering mechanism 100 by the external environment, extending the service life of the triggering mechanism 100, and also reducing failures caused by the external environment, thus reducing maintenance and replacement costs.

[0059] like Figure 1 , Figure 2 As shown, when the movable member 10 is in the first initial position, in the first direction Z, the trigger member 30 extends at least partially outward from the housing 40. The component to be monitored acts on the portion of the trigger member 30 that extends outward from the housing 40, thereby forcing the trigger member 30 to move along the first direction Z. Finally, through the transmission member 50, the movable member 10 is driven to move toward the mating member 20, so that when the movable member 10 moves from the first initial position to the trigger position, the contacts of the trigger mechanism 100 are closed.

[0060] In this embodiment, the trigger member 30 has a first end and a second end that are disposed opposite to each other along the first direction Z. In the first direction Z, the first end is located above the second end. When the trigger member 30 is slidably assembled with the housing 40, the first end of the trigger member 30 can extend out of the mounting cavity 41 along the direction of extension from the movable member 10 to the mating member 20, or the second end of the trigger member 30 can extend out of the mounting cavity 41 along the direction of extension from the mating member 20 to the movable member 10.

[0061] Furthermore, when the first end of the trigger 30 extends out of the mounting cavity 41 along the direction from the movable member 10 to the mating member 20 (that is, the trigger 30 extends out from the top of the mounting cavity 41), the triggering mechanism is positioned below the component to be monitored in the first direction Z, and the gear unit includes an odd number of gears 51. This enables the trigger 30 to be forced to move in the first direction Z along the direction from the mating member 20 to the movable member 10 when the component to be monitored moves toward the trigger 30 and presses the trigger 30. The movable member 10 is then driven from the first initial position to the trigger position by the mating gear unit, the first gear train 52, and the trigger gear train 53.

[0062] Alternatively, when the second end of the trigger 30 extends out of the mounting cavity 41 along the extension direction from the mating member 20 to the movable member 10 (that is, the trigger 30 extends out from the bottom of the mounting cavity 41), the triggering mechanism is positioned above the component to be monitored in the first direction Z, and the gear unit includes an even number of gears 51. This enables the trigger 30 to be forced to move in the first direction Z along the extension direction from the movable member 10 to the mating member 20 when the component to be monitored moves toward the trigger 30 and presses the trigger 30, and the movable member 10 is driven to move from the first initial position to the trigger position by the mating gear unit, the first gear train 52, and the trigger gear train 53.

[0063] It is understandable that, such as Figure 1 , Figure 3As shown, since the trigger 30 needs to extend outward from the housing 40, a through hole 45 is provided on the housing 40 at a position corresponding to the trigger 30 for the trigger 30 to extend outward. At the same time, in order to ensure that the trigger 30 can move along a preset trajectory in the first direction Z, a limiting mechanism is provided in the mounting cavity 41 to limit the trigger 30. For example, the periphery of the trigger 30 can abut against the inner wall of the mounting cavity 41, and the size of the through hole 45 can match the periphery of the trigger 30. Thus, under the limiting effect of the through hole 45 and the inner wall of the mounting cavity 41, the trigger 30 can be ensured to move along a preset trajectory in the first direction Z.

[0064] Alternatively, the size of the perforation 45 can be slightly larger than the circumferential size of the trigger 30. Then, multiple grooves extending along the first direction Z are provided on the inner wall of the mounting cavity 41. A slider is provided at the corresponding position of the groove on the circumference of the trigger 30, which is slidably assembled in the groove. Thus, the trigger 30 can move along the first direction Z according to a preset trajectory under the action of multiple cooperating grooves and sliders.

[0065] In this embodiment, the arrangement of the first limiting member 60 and the second limiting member 70 is specifically described in conjunction with the structure of the housing 40; for example... Figure 4 As shown, the dimensions of the movable member 10 along the second direction Y and the mounting cavity 41 along the second direction Y can be kept consistent. That is, in the second direction Y, the opposite side walls of the movable member 10 respectively abut and slide in contact with the opposite side walls of the mounting cavity 41; as Figure 3 , Figure 4 As shown, first limiting members 60 are respectively provided on the opposite side walls of the mounting cavity 41 at the end away from the transmission member 50 and along the second direction Y, so that the end of the movable member 10 facing the trigger member 30 meshes with the gear 51, and the end of the movable member 10 away from the trigger member 30 abuts against the first limiting member 60. Thus, the cooperation of the first limiting member 60, the gear 51 and the opposite side walls of the mounting cavity 41 along the second direction Y achieves the effect of guiding the movable member 10 to move along the first direction Z according to a preset trajectory.

[0066] Alternatively, the first limiting member 60 can be a groove structure provided on the side wall of the mounting cavity 41, and the groove structure extends along the first direction Z. A slider is provided at the position corresponding to the groove structure of the movable member 10, which is slidably assembled with the groove structure. Thus, under the cooperation of the slider and the groove structure, the movable member 10 can move in the mounting cavity 41 along the first direction Z and according to a preset trajectory. At this time, the opposite side walls of the movable member 10 along the second direction Y and the opposite side walls of the mounting cavity 41 along the second direction Y can be either not in contact or in contact.

[0067] In this embodiment, as Figure 3 , Figure 6As shown, the second limiting member 70 includes a vertical guide portion 71. Vertical guide portions 71 are respectively installed on opposite side walls of the mounting cavity 41 in the second direction Y of the housing 40, such that two mating vertical guide portions 71 in the second direction Y of the housing 40 constitute a vertical guide group. Figure 3 , Figure 4 As shown, two of the aforementioned vertical guide groups are spaced apart on a third direction X of the housing 40, such as... Figure 3 As shown, the mating parts 20 abut against the corresponding vertical guide groups at their opposite ends along the third direction X of the housing 40, thereby guiding the mating parts 20 to move along the first direction Z and according to a preset trajectory.

[0068] In this embodiment, the supporting portion 72 of the second limiting member 70 is correspondingly provided with the vertical guide portion 71, and the supporting portion 72 is vertically connected to the bottom position of the vertical guide portion 71 (the bottom of each vertical guide portion 71 is vertically connected with the supporting portion 72), and the supporting portion 72 extends along the third direction X, so that the mating member 20 facing the movable member 10 at least partially abuts against the upper surface position of the supporting portion 72, thereby supporting the mating member 20 through the four supporting portions 72, and making the mating member 20 in the second initial position.

[0069] It is understandable that, such as Figure 3 As shown, the support portion 72 can be provided only at the bottom of the two vertical guide portions 71 near the trigger member 30. In this case, the end of the mating member 20 near the trigger member 30 is supported by the two support portions 72. The end of the mating member 20 away from the trigger member 30 can directly abut against the upper surface of the first limiting member 60, that is, the first limiting member 60 extends upward along the first direction Z to abut against the side of the mating member 20 facing the movable member 10, so as to support the end of the mating member 20 away from the trigger member 30.

[0070] Alternatively, the second limiting member 70 can also be a groove structure provided on the side wall of the mounting cavity 41, and the groove structure extends along the first direction Z. A slider is provided at the corresponding position of the mating member 20 and the groove structure to slide and assemble with the groove structure. Thus, under the cooperation of the slider and the groove structure, the mating member 20 moves in the mounting cavity 41 along the first direction Z and according to a preset trajectory. At this time, the opposite side walls of the mating member 20 along the second direction Y and the opposite side walls of the mounting cavity 41 along the second direction Y can be either not in contact or in contact.

[0071] It is understandable that the moving part 10 and the mating part 20 can be a flat structural component (such as...). Figure 2 , Figure 3As shown in the figure, it can also be a sphere or other structural shape, as long as it can achieve the above-mentioned effect in this solution; when the moving part 10 and the mating part 20 adopt different structural shapes, the first limiting part 60 and the second limiting part 70 that mate with them can be matched accordingly.

[0072] Reference Figure 1 , Figure 2 As shown in one embodiment of this application, the triggering mechanism 100 further includes a first connecting portion 42 and a second connecting portion 43, wherein the first connecting portion 42 and the second connecting portion 43 are both disposed on the outer side wall of the housing 40, and the first connecting portion 42 is electrically connected to the first conductive surface 11, and the second connecting portion 43 is electrically connected to the second conductive surface 21; the first connecting portion 42 and the second connecting portion 43 are respectively used to connect to an external circuit (the circuit is connected to a power source), when the first conductive surface 11 and the second conductive surface 21 are in contact, that is, when the contacts of the triggering mechanism 100 are closed, the circuit is turned on and a conduction signal is generated, and the external control system monitors the conduction signal of the circuit to determine whether the triggering mechanism 100 is triggered, that is, whether the monitored component has moved to a preset position.

[0073] It is understood that both the first connecting part 42 and the second connecting part 43 are conductive components (to ensure safe use, an insulating layer can be wrapped around the peripheral surfaces of the first connecting part 42 and the second connecting part 43). The connection between the first connecting part 42 and the first conductive surface 11 can be made by a flexible wire, that is, one end of the flexible wire is connected to the first conductive surface 11 and the other end of the flexible wire is connected to the first connecting part 42. Thus, while achieving an electrical connection between the first connecting part 42 and the first conductive surface 11, it will not hinder the movement of the movable part 10 within the mounting cavity 41.

[0074] Alternatively, the first connecting portion 42 and the first conductive surface 11 can be connected in other ways, such as... Figure 2 As shown, along the third direction X, two conductive plates extending along the first direction Z are provided on the side wall of the mounting cavity 41 away from the trigger 30. One conductive plate is electrically connected to the first connecting part 42, and the other conductive plate is electrically connected to the second connecting part 43 (the two conductive plates are spaced apart in the first direction Z). A conductive contact rod extending along the third direction X is provided on the side of the movable member 10 and the mating member 20 facing the conductive plate. One end of the conductive contact rod is electrically connected to the corresponding conductive surface, and the other end of the conductive contact rod abuts against the corresponding conductive plate. This enables the two conductive contact rods to slide relative to the corresponding conductive plate in the first direction Z when the movable member 10 and the mating member 20 move along the first direction Z, thereby realizing the electrical connection between the first conductive surface 11 and the first connecting part 42, and the electrical connection between the second conductive surface 21 and the second connecting part 43.

[0075] Reference Figure 1 As shown in one embodiment of this application, a plurality of mounting holes 44 are provided at intervals on the outer periphery of the housing 40, and the trigger mechanism 100 can be fixed in a preset position by using screws, bolts or other fasteners through the mounting holes 44.

[0076] Understandably, in order to improve the installation stability of the housing 40, a washer can be provided at the mounting hole 44 to ensure a tight fit and prevent loosening.

[0077] Reference Figure 2 , Figure 3 As shown, in one embodiment of this application, the movable member 10 may be a conductive structural member, and at least a portion of the movable member 10 facing the mating member 20 forms the first conductive surface 11; or the mating member 20 may be a conductive structural member, and at least a portion of the mating member 20 facing the movable member 10 forms the second conductive surface 21; or both the movable member 10 and the mating member 20 may be conductive structural members, with at least a portion of the movable member 10 facing the mating member 20 forming the first conductive surface 11 and at least a portion of the mating member 20 facing the movable member 10 forming the second conductive surface 21.

[0078] In this embodiment, when both the moving part 10 and the mating part 20 are conductive structural parts, such as Figure 4 As shown, the end of the flexible wire near the movable member 10 can be connected to the movable member 10 by welding, and a first welding part 12 is formed on the movable member 10. This allows the end of the flexible wire near the movable member 10 to move synchronously with the movement of the movable member 10 and achieve electrical connection with the first conductive surface 11.

[0079] It is understandable that the end of the flexible wire near the mating part 20 is also connected to the mating part 20 by welding, and a second welding part 22 is formed on the mating part 20. This allows the end of the flexible wire near the mating part 20 to move synchronously with the movement of the mating part 20 and achieve electrical connection with the second conductive surface 21.

[0080] It is understandable that when the movable part 10 and the mating part 20 are conductive structural parts, the flexible wire can be connected to any position of the movable part 10 and the mating part 20, thereby realizing the electrical connection between the first connecting part 42 and the first conductive surface 11, as well as the electrical connection between the second connecting part 43 and the second conductive surface 21.

[0081] In this embodiment, if both the movable component 10 and the mating component 20 are conductive structural components, and the movable component 10 and the mating component 20 are a complete planar structure on opposite sides, then the side of the movable component 10 facing the mating component 20 is entirely the first conductive surface 11, and the side of the mating component 20 facing the movable component 10 is entirely the second conductive surface 21. When the movable component 10 and the mating component 20 are not a complete planar structure on opposite sides, that is, when both the movable component 10 and the mating component 20 have protruding structures on opposite sides (when the movable component 10 moves toward the mating component 20 and moves to the trigger position, the two protruding structures abut against each other), then the protruding structure forms a conductive surface on the side of the corresponding plate.

[0082] It is understandable that if one of the moving part 10 and the mating part 20 is a conductive structural part, the other is set as an insulating structural part, and a conductive component is provided on the side of the other part (insulating structural part) facing the conductive structural part, and a conductive surface is formed on one side of the conductive component.

[0083] In this embodiment, when the movable component 10 is a conductive structural component, an insulating isolation layer, such as polytetrafluoroethylene, polyimide, or polycarbonate, needs to be provided in the contact area between the movable component 10 and the inner wall of the mounting cavity 41. The insulating isolation layer is then pasted or fixed to the inner wall of the mounting cavity 41 to ensure good insulation between it and the movable component 10.

[0084] Alternatively, an insulating coating, such as epoxy resin or polyurethane, can be applied to the area where the movable part 10 contacts the inner wall of the mounting cavity 41. This coating can be applied by spraying, dipping, or brushing to ensure that it evenly covers the area where the movable part 10 and the inner wall of the mounting cavity 41 contact, thus forming a good insulating layer.

[0085] Alternatively, the casing 40 can be made of insulating materials such as polycarbonate, polypropylene, or polyethylene.

[0086] It is understandable that, since the moving part 10 meshes with the gear 51, the aforementioned isolation measures need to be set in the area where the moving part 10 and the gear mesh with each other, or the gear 51 can be made of non-conductive materials, such as nylon, polyoxymethylene, polytetrafluoroethylene, etc.; thereby ensuring good insulation performance, effectively preventing current leakage and short circuit, and ensuring the safety and reliability of the triggering mechanism 100.

[0087] It is understandable that when the mating part 20 is also a conductive structural part, the above-mentioned isolation measures are also required for the mating part 20. For details, please refer to the above description, and we will not go into further detail here.

[0088] In this embodiment, the movable part 10 and the mating part 20 can be made of metals such as copper and aluminum with good electrical conductivity.

[0089] Reference Figure 2 , Figure 3 As shown in one embodiment of this application, the movable member 10 and the mating member 20 can both be insulating structural members. In this case, a first conductor needs to be provided on the side of the movable member 10 facing the mating member 20, and a second conductor needs to be provided on the side of the mating member 20 facing the movable member 10. This results in the first conductive surface 11 being formed on the side of the first conductor facing the mating member 20, and the second conductive surface 21 being formed on the side of the second conductor facing the movable member 10.

[0090] In this embodiment, a first conductor is provided only on the side of the movable member 10 facing the mating member 20, and a second conductor is provided on the side of the mating member 20 facing the movable member 10. The movable member 10 and the mating member 20 are made of insulating structural parts, thereby reducing the consumption of conductor materials.

[0091] It is understandable that the connection and fixation between the first conductor and the moving part 10, and between the second conductor and the mating part 20, can be achieved by means of adhesive or fasteners (bolts, screws, etc.).

[0092] In this embodiment, the first conductor can be installed in a portion of the movable part 10 facing the mating part 20, and the second conductor can be installed in a portion of the mating part 20 facing the movable part 10. The peripheral contour of the first conductor and the peripheral contour of the movable part 10 should be spaced apart by a certain distance, and the peripheral contour of the second conductor and the peripheral contour of the mating part 20 should be spaced apart by a certain distance. Therefore, it is not necessary to set additional insulation isolation measures at the contact points of the movable part 10, the mating part 20 and the inner wall of the mounting cavity 41. This arrangement reduces the demand for conductive materials and avoids setting insulation isolation measures at the contact points of the movable part 10, the mating part 20 and the inner wall of the mounting cavity 41, thereby reducing the production cost of the triggering mechanism 100 to a certain extent.

[0093] Alternatively, one of the movable member 10 and the mating member 20 may be a conductive structural member and the other may be an insulating structural member. When the movable member 10 is an insulating structural member, a conductive component needs to be provided on the side of the movable member 10 facing the mating member 20, and the first conductive surface 11 is formed on the side of the conductive component facing the mating member 20. When the mating member 20 is an insulating structural member, a conductive component needs to be provided on the side of the mating member 20 facing the movable member 10, and the second conductive surface 21 is formed on the side of the conductive component facing the movable member 10.

[0094] Secondly, this application proposes a limit switch, which includes the triggering mechanism 100 in the above embodiments. It should be noted that since the limit switch includes the triggering mechanism 100 in the above embodiments, the embodiments of the limit switch provided by this application include all the technical solutions of all embodiments of the triggering mechanism 100, and the technical effects achieved are exactly the same, which will not be repeated here.

[0095] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A triggering mechanism having a first direction extending along its height, characterized in that, The triggering mechanism includes: A movable component is arranged to move along the first direction, and on the movement trajectory of the movable component, the movable component has a first initial position and a trigger position; A mating component, the mating component being spaced apart on one side of the movable component along the first direction, the movable component having a first conductive surface on the side facing the mating component, and the mating component having a second conductive surface on the side facing the movable component; and A trigger element is arranged to move along the first direction. The movable element and the trigger element are connected by a transmission element. The weight of the movable element is greater than the weight of the trigger element, so that when the trigger element is not subjected to external force, the movable element is in the first initial position. When the trigger element is subjected to external force, it moves a preset distance along the first direction, and the transmission element drives the movable element to move from the first initial position to the trigger position. The movable component moves between the first initial position and the trigger position, causing the first conductive surface and the second conductive surface to contact or separate, thereby switching the trigger state of the triggering mechanism.

2. The triggering mechanism as described in claim 1, characterized in that, In the first direction, the mating parts are spaced apart above the movable parts; When the movable component is in the first initial position, the first conductive surface and the second conductive surface are separated; when the movable component is in the trigger position, the first conductive surface and the second conductive surface are in contact.

3. The triggering mechanism as described in claim 1, characterized in that, The transmission component includes a gear unit; The movable component has a first tooth system that meshes with the gear unit, and the trigger component has a trigger tooth system that meshes with the gear unit.

4. The triggering mechanism as described in claim 3, characterized in that, The gear unit includes a gear, and the rotation axis of the gear extends in a plane perpendicular to the first direction. Both the first gear train and the trigger gear train mesh with the gear; or The gear unit includes at least two gears, at least two of the gears meshing with each other, and the rotation axes of at least two of the gears extend in a plane perpendicular to the first direction. One of the first gear train and the trigger gear train meshes with one of the gears, and the other meshes with the other gear.

5. The triggering mechanism as described in claim 2, characterized in that, The mating component is arranged to move along the first direction, and the movement trajectory of the mating component is spaced above the movable component. On the movement trajectory of the mating member, the mating member has a second initial position close to the moving member.

6. The triggering mechanism as described in claim 5, characterized in that, The triggering mechanism further includes: A first limiting member is arranged parallel to the movement trajectory of the movable member, and the movable member slides in contact with the first limiting member. The first limiting member guides the movable member to move along a preset trajectory in the first direction. The second limiting member is at least partially arranged parallel to the movement trajectory of the mating member, and the portion of the second limiting member parallel to the movement trajectory of the mating member slides in contact with the mating member. The second limiting member is used to guide the mating member to move along a preset trajectory in the first direction. The second limiting member has a supporting portion for supporting the mating member, and at least a portion of the mating member facing the movable member abuts against the supporting portion to place the mating member in the second initial position.

7. The triggering mechanism as described in claim 2, characterized in that, The triggering mechanism further includes a housing, which has a mounting cavity, and the movable part, the mating part, and the transmission part are all disposed in the mounting cavity; In the first direction, the movable part abuts against the bottom wall of the mounting cavity on the side opposite to the mating part, so that the movable part is in the first initial position; In the first direction, at least a portion of the trigger extends out of the housing.

8. The triggering mechanism as described in claim 7, characterized in that, The triggering mechanism further includes: A first connecting portion is disposed on the outer side wall of the housing, and the first connecting portion is electrically connected to the first conductive surface; and The second connecting part is provided on the outer side wall of the housing, and the second connecting part is electrically connected to the second conductive surface. The first connecting part and the second connecting part are used to connect to the external circuit.

9. The triggering mechanism as described in any one of claims 1-8, characterized in that, The movable component is a conductive structural component, and at least a portion of the movable component facing the mating component forms the first conductive surface; and / or The mating component is a conductive structural component, and at least a portion of the mating component facing the movable component forms the second conductive surface.

10. A limit switch, characterized in that, The limit switch includes the triggering mechanism according to any one of claims 1-9.

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