A spring driven signal triggering mechanism

Abstract

The application relates to the technical field of vehicle door locks, in particular to a signal triggering mechanism driven by a spring, which comprises a shell, a pawl, a pawl lever, a pawl signal triggering lever, a pawl switch and a driving spring. The mechanism effectively solves the problem of long-stroke signal triggering in a compact space through elastic transmission and a two-stage working mechanism. When the pawl rotates from the full-lock position, the triggering lever is pushed to rotate by the lever and the driving spring, and the switch is reliably triggered; after the triggering lever contacts the limiting part, the pawl can continue to move and compress the driving spring to absorb the excess stroke. The design ensures the accuracy of signal triggering and the completion of full-stroke movement, and has high reliability, low noise and good space adaptability.

Description

Technical Field

[0001] This application relates to the field of vehicle door lock technology, and in particular to a spring-driven signal triggering mechanism. Background Technology

[0002] In modern automotive door lock systems, the implementation of electric functions relies on the precise coordination of multiple switch signals. Among them, the ratchet switch, as a key signal source, directly affects the execution of the door's self-closing function and the determination of whether the door is in a false-closed state. Typically, this switch is required to not trigger when the door reaches the fully locked position, but must remain triggered from the fully locked position until the ratchet reaches its full travel. This signal triggering mechanism has high requirements for travel length; however, in actual structural design, due to installation space limitations, the trigger linkage often cannot provide sufficient travel, thus posing a challenge to the mechanism design.

[0003] Currently, most common signal triggering mechanisms use rigid linkage direct transmission, whose stroke is limited by the layout and size of the mechanical structure, making it difficult to achieve long-stroke triggering within a limited space. Especially in compact applications with complex functional requirements, such as car door locks, traditional structures often cannot simultaneously meet the dual requirements of trigger stroke and space constraints, leading to inaccurate signal detection or decreased mechanism reliability. Utility Model Content

[0004] To address one or more of the problems existing in the prior art, this application provides a spring-driven signal triggering mechanism, comprising:

[0005] case;

[0006] A pawl is rotatably mounted on the housing.

[0007] A pawl lever is rotatably mounted on the housing and fixedly connected to one end of the pawl;

[0008] A pawl signal trigger rod is rotatably mounted on the housing.

[0009] A ratchet switch is positioned along the movement path of the ratchet signal trigger lever and can be actuated by the ratchet signal trigger lever; and

[0010] A drive spring is connected between the pawl lever and the pawl signal trigger lever;

[0011] The housing is provided with a limiting part to restrict the travel of the pawl signal trigger rod;

[0012] When the pawl rotates from the fully locked position to the unlocked position, the rotation of the pawl is transmitted through the pawl lever and the drive spring, driving the pawl signal trigger lever to rotate and triggering the pawl switch until the pawl signal trigger lever contacts the limiting part;

[0013] When the pawl signal trigger rod contacts the limiting part, the pawl can continue to rotate in the unlocking direction and compress the drive spring through the pawl lever, so that the pawl completes the remaining stroke.

[0014] Optionally, the housing is an L-shaped housing, including a first mounting housing, a second mounting housing, and a top cover. The first mounting housing and the second mounting housing are respectively fixedly assembled with the L-shaped top cover to obtain the housing, which has a component installation space inside.

[0015] Optionally, the pawl is rotatably disposed outside the first mounting housing, the first mounting housing has a through pawl drive channel, and the pawl lever is rotatably disposed inside the first mounting housing by a pawl rivet and is fixedly connected to one end of the pawl through the pawl drive channel.

[0016] Optionally, the pawl signal trigger rod is rotatably disposed within the second mounting housing, and the pawl switch is fixed within the second mounting housing; the limiting part is integrally formed with the second mounting housing or fixed within the second mounting housing.

[0017] Optionally, a groove is formed on the body of the pawl lever, and a drive spring fixing shaft is formed in the middle of the groove; the drive spring is sleeved on the drive spring fixing shaft, one end abutting against the groove wall, and the other end abutting against one end of the pawl signal trigger lever.

[0018] Optionally, the spring-driven signal triggering mechanism also includes a pawl return spring.

[0019] The first mounting housing has a pawl return spring fixing shaft inside. The pawl return spring is sleeved on the pawl return spring fixing shaft, with one end abutting against the inner wall of the first mounting housing and the other end abutting against the pawl lever, for driving the pawl to reset to the fully locked position.

[0020] Optionally, the spring-driven signal triggering mechanism further includes a pawl signal trigger rod reset spring, which acts on the pawl signal trigger rod to drive it to reset in a direction away from the limiting part.

[0021] Optionally, the spring-driven signal triggering mechanism further includes a buffer block disposed on the movement path of the pawl signal triggering rod, which provides buffering when the pawl signal triggering rod is reset, so as to absorb impact energy and reduce noise.

[0022] The above-mentioned one or more technical solutions have at least the following beneficial effects:

[0023] The spring-driven signal triggering mechanism provided in this application effectively resolves the conflict between the signal triggering stroke and installation space in a vehicle door lock system through a two-stage working mechanism. This mechanism utilizes the elastic deformation characteristics of the drive spring during transmission to achieve precise detection of long-stroke movements within a limited space. When the pawl begins to move from the fully locked position, the spring reliably triggers the switch signal by driving the trigger rod; after the trigger rod is blocked by the limiting part, the spring can continue to compress and absorb excess stroke, thus ensuring that the pawl can complete its entire designed range of motion. This design satisfies the reliability requirements of signal triggering while also adapting to compact installation environments.

[0024] The transmission link design of this mechanism significantly improves the system's adaptability and reliability. By using spring connections instead of traditional rigid linkages, motion interference or jamming caused by dimensional chain errors or assembly deviations is effectively avoided. The pre-compression of the springs also automatically eliminates transmission backlash, ensuring timely and accurate signal triggering. Simultaneously, this flexible transmission method absorbs vibrations and shocks during motion, improving the overall durability and stability of the mechanism.

[0025] The mechanism is also equipped with a sophisticated reset system, including a pawl return spring and a trigger rod return spring, ensuring that each component accurately returns to its initial position after each trigger. This design not only guarantees the reliability of the working cycle but also avoids false signal problems caused by positional uncertainty. In particular, the reasonable matching of the trigger rod return spring provides sufficient reset force without creating excessive resistance to the triggering operation, demonstrating a sophisticated mechanical balance design.

[0026] Furthermore, the mechanism incorporates high-performance buffer blocks in key areas to effectively absorb impact energy at the end of movement. This buffer design significantly reduces operating noise, improves user comfort, and minimizes damage to components from repeated impacts, extending the mechanism's lifespan. It is particularly suitable for automotive door lock applications where noise control is critical. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the external structure of a spring-driven signal triggering mechanism provided in an exemplary embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the external structure of a spring-driven signal triggering mechanism provided in an exemplary embodiment of this application from another angle;

[0030] Figure 3This is a partial structural schematic diagram of a spring-driven signal triggering mechanism provided in an exemplary embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of a spring-driven signal triggering mechanism in its initial state, provided in an exemplary embodiment of this application.

[0032] Figure 5 This is a schematic diagram of the structure of a spring-driven signal triggering mechanism in a motion state, provided in an exemplary embodiment of this application.

[0033] Figure 6 This is a schematic diagram of another motion state of the spring-driven signal triggering mechanism provided in an exemplary embodiment of this application.

[0034] Figure label:

[0035] 1. Locking tongue; 11. Locking tongue rivet; 12. Second locking channel; 13. Semi-locking locking part; 14. Fully locking locking part;

[0036] 2. Pawl; 21. Pawl rivet; 22. First pawl drive end; 23. Second pawl drive end; 24. Snap-fit ​​part;

[0037] 100. Housing; 110. First mounting housing; 111. First locking channel; 112. Pawl drive channel; 113. Limiting part; 114. Pawl return spring fixing shaft; 120. Second mounting housing; 130. L-shaped top cover;

[0038] 200. Pawl lever; 201. Pawl fixing end; 210. Groove; 220. Drive spring fixing shaft;

[0039] 300. Pawl signal trigger lever; 400. Pawl switch; 500. Drive spring; 600. Pawl reset spring; 700. Pawl signal trigger lever reset spring; 800. Buffer block. Detailed Implementation

[0040] Embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The components of the embodiments of this application described and shown in the drawings herein can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0041] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection 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.

[0044] The following will combine Figures 1 to 6 The technical solutions of this application are clearly and completely described. Obviously, the described embodiments are only some embodiments of this application, not all embodiments.

[0045] See Figure 1 The spring-driven signal triggering mechanism provided in this application includes a housing 100. The housing 100 includes a first mounting housing 110, a second mounting housing 120, and an L-shaped top cover 130. The first mounting housing 110 and the second mounting housing 120 are respectively fixedly assembled with the L-shaped top cover 130 to obtain an L-shaped housing 100, which has a component installation space inside.

[0046] See Figure 2 The latch 1 and pawl 2 are rotatably mounted on the outside of the first mounting housing 110 via latch rivets 11 and pawl rivets 21, respectively. A first latch channel 111 extending towards the latch 1 is provided on the bottom edge of the outer side of the first mounting housing 110, and a second latch channel 12 is provided from its edge towards its center on the latch 1. When the door is closed, the latch can enter the second latch channel 12 from the first latch channel 111 and contact the latch 1, pushing the latch 1 to rotate until it blocks the first latch channel 111. Simultaneously, the latch 1 engages with the pawl 2, causing the multi-functional passenger vehicle door lock to enter the locked state from the unlocked state.

[0047] A semi-locking locking portion 13 and a fully locking locking portion 14 are formed at the edge of the latch 1. The pawl 2 includes a first pawl drive end 22 and a second pawl drive end 23, and a locking portion 24 is formed at the first pawl drive end 22. When the latch pushes the latch 1 to rotate, the semi-locking locking portion 13 and the fully locking locking portion 14 can respectively engage with the locking portion 24, thereby allowing the multi-functional passenger vehicle door lock to enter the semi-locked or fully locked position.

[0048] In some embodiments, the first mounting housing 110 has a through pawl drive channel 112.

[0049] See Figures 3 to 6 The present application provides a spring-driven signal triggering mechanism, which integrates core components such as a pawl lever 200, a pawl signal triggering lever 300, a pawl switch 400, and a drive spring 500 inside the housing 100, which work together to achieve reliable position signal triggering and stroke adaptation functions.

[0050] The pawl lever 200 is rotatably mounted inside the first mounting housing 110 via a pivot. One end of the lever is the pawl fixed end 201, which passes through the pawl drive channel 112 and is fixedly connected to the external pawl 2, so that the rotational movement of the pawl 2 can be accurately transmitted to the pawl lever 200.

[0051] The pawl signal trigger rod 300 is independently rotatably mounted inside the second mounting housing 120. A pawl switch 400 is provided at the end of its rotation path. The switch is arranged in a fixed installation manner, and its trigger end is located exactly on the movement trajectory of the pawl signal trigger rod 300, so that when the trigger rod rotates to a specific angle, the switch can be reliably actuated to output an electrical signal.

[0052] The drive spring 500 connects the pawl lever 200 and the pawl signal trigger lever 300, enabling the rotation of the pawl lever 200 to drive the pawl signal trigger lever 300 to rotate, thus forming a crucial elastic transmission link. This spring not only provides power transmission but also has the ability to store and release energy.

[0053] A limiting part 113 is integrally formed inside the second mounting housing 120. This limiting part is usually a robust boss structure, which is used to mechanically block the continued movement of the pawl signal trigger rod 300 and precisely define its maximum rotation stroke.

[0054] The organization's work process is clearly divided into two stages:

[0055] In the first stage, when pawl 2 rotates from the fully locked position to the unlocked position, that is, from... Figure 4 State Figure 6When in operation, the pawl lever 200 pushes the drive spring 500, which in turn drives the pawl signal trigger lever 300 to rotate. During rotation, the pawl signal trigger lever 300 presses against the trigger end of the pawl switch 400, causing it to switch states, until the trigger lever contacts the limit part 113.

[0056] In the second stage, when the pawl signal trigger lever 300 is blocked by the limiting part 113, the target is reached. Figure 5 After the indicated operating state, pawl 2 continues to move under the action of external power. At this time, pawl lever 200 continues to rotate and begins to compress drive spring 500. The spring undergoes elastic deformation to absorb excess stroke, thereby enabling pawl 2 to smoothly complete the entire designed stroke while pawl signal trigger lever 300 remains stationary, thus achieving... Figure 6 The state shown is as described. This two-stage working mechanism effectively resolves the contradiction between long-stroke motion and signal triggering requirements within a limited installation space, combining high reliability with compactness.

[0057] In some embodiments, a U-shaped groove 210 is precision stamped into the body of the pawl lever 200. This groove not only reduces the overall weight of the pawl lever 200, but more importantly, it provides a stable and constrained mounting space for the drive spring 500. At the center of the groove 210, a cylindrical drive spring fixing shaft 220 is integrally formed. This shaft extends upwards perpendicular to the bottom surface of the groove, and its diameter matches the inner diameter of the drive spring 500, ensuring that the spring can be precisely fitted onto the shaft without radial movement.

[0058] The drive spring 500 is preferably a small cylindrical helical compression spring, which is mounted on the drive spring fixed shaft 220. One end of the drive spring 500 is firmly abutted against the side wall plane of the groove 210, which serves as the fixed reaction surface for the spring's operation; the other end of the drive spring 500 extends out of the groove and abuts against a specific force-bearing platform at one end of the pawl signal trigger rod 300. This design ensures that the drive spring 500 always operates in a guided and limited environment, greatly improving the reliability and consistency of force transmission. When the pawl lever 200 rotates, it pushes the drive spring 500 through the side wall of the groove 210, and the drive spring 500 then transmits the force to the pawl signal trigger rod 300, forming an efficient and flexible power transmission chain. This structure effectively avoids the jamming problem that may occur due to dimensional chain errors in traditional rigid linkages, while the pre-compression of the drive spring 500 can also eliminate motion backlash in the mechanism, ensuring the timeliness and accuracy of signal triggering.

[0059] In some embodiments, the spring-driven signal triggering mechanism provided in this application is further provided with a pawl return spring 600, which is specifically designed to ensure that the mechanism can automatically return to its initial working state after signal triggering is completed.

[0060] The first mounting housing 110 has a pawl return spring fixing shaft 114 integrally formed inside by a precision mold. This fixing shaft is a cylindrical boss perpendicular to the mounting plane of the housing, and its diameter is precisely designed to ensure an appropriate fit clearance with the spring. The pawl return spring 600 is preferably a cylindrical helical torsion spring, which is precisely fitted onto the pawl return spring fixing shaft 114. The inner diameter of the spring and the diameter of the fixing shaft form a suitable fit, which ensures installation stability and allows for smooth torsional movement.

[0061] One end of the pawl return spring 600 is stably abutted against the fixing point on the inner wall of the first mounting housing 110, serving as the reaction force support point for the spring operation; the other end is in contact with the specific force arm structure of the pawl lever 200, forming an effective torque transmission path.

[0062] When pawl 2 rotates in the unlocking direction, it drives pawl lever 200 to compress pawl return spring 600, storing elastic potential energy. When the external force is released, pawl return spring 600 releases its stored energy, pushing pawl lever 200 to rotate in the opposite direction, thereby driving the entire mechanism (including pawl 2) to accurately and reliably return to the fully locked position. This reset mechanism not only ensures the cyclic reliability of the mechanism's operation but also eliminates the problem of false signal triggering caused by position uncertainty. Furthermore, its compact built-in design fully demonstrates the space utilization efficiency of the mechanism.

[0063] In some embodiments, the spring-driven signal triggering mechanism provided in this application further includes a pawl signal trigger rod return spring 700, which is specifically designed to ensure that the pawl signal trigger rod can quickly and reliably return to the standby position after completing the signal triggering function. The pawl signal trigger rod return spring 700 is preferably a torsion spring, which is precisely fitted onto the rotating shaft of the pawl signal trigger rod 300. The inner diameter of the spring and the diameter of the rotating shaft form a precise fit, ensuring both installation stability and without affecting rotational flexibility.

[0064] One end of the pawl signal trigger rod return spring 700 forms a stable abutment with a specially designed spring positioning post on the inner wall of the second mounting housing 120, serving as a fixed fulcrum for the spring's operation; the other end cleverly connects to a specially designed spring hook or platform structure on the pawl signal trigger rod 300, forming an effective torque transmission path. When the pawl signal trigger rod 300 rotates towards the limiting part 112 during its working stroke, it forces the pawl signal trigger rod return spring 700 to undergo torsional deformation, thereby storing elastic potential energy.

[0065] When the driving force is released, the pawl signal trigger rod return spring 700 releases its stored energy, and the resulting restoring torque drives the pawl signal trigger rod 300 to rotate away from the limit part 112, allowing it to quickly and accurately return to the initial waiting position. This reset mechanism not only ensures the timely release of the signal trigger state, preparing for the next trigger, but also effectively eliminates motion backlash in the mechanism, avoiding the generation of false signals due to vibration and other factors. At the same time, this design, through reasonable spring force matching, ensures reliable reset function without creating excessive resistance to the triggering operation of the mechanism, demonstrating a sophisticated mechanical balance design.

[0066] In some embodiments, the spring-driven signal triggering mechanism provided in this application further includes a buffer block 800, which is made of a highly elastic and highly damped engineered polyurethane material, which significantly improves the operating quality of the mechanism with its excellent energy absorption characteristics.

[0067] The buffer block 800 is fixedly installed on the inner wall of the second mounting housing 120 by interference fit or snap-fit ​​connection, and is precisely located at the end of the reset movement trajectory of the pawl signal trigger rod 300.

[0068] When the pawl signal trigger lever 300 approaches a stationary position at high speed during the reset process, the impact surface of its moving end comes into contact with the buffer block 800. At this time, the buffer block 800 prolongs the impact time through the elastic deformation of its own material, effectively reducing the instantaneous impact acceleration and dissipating the kinetic energy of the pawl signal trigger lever 300. This buffering mechanism not only significantly reduces the impact noise generated during the mechanism's reset, making its operation quieter, but also effectively absorbs impact energy, reducing repeated impact damage to the pawl signal trigger lever 300 and its related connecting structures, thereby improving the service life and reliability of the entire signal triggering mechanism.

[0069] The working process of the spring-driven signal triggering mechanism provided in this application is as follows:

[0070] The operation of the spring-driven signal triggering mechanism provided in this application begins with the rotation of the pawl 2 from the fully locked position to the unlocked position. This rotation is transmitted to the pawl lever 200 via a fixed connection, causing it to rotate synchronously. The rotation of the pawl lever 200 pushes the drive spring 500 through the side wall of its groove 210. The other end of the spring acts on the force-bearing platform of the pawl signal triggering lever 300, thereby transmitting the motion to the pawl signal triggering lever 300. During this process, the drive spring 500 remains in a rigid pushing state, ensuring effective force transmission.

[0071] As the pawl signal trigger lever 300 rotates, its end gradually approaches and eventually presses against the trigger terminal of the pawl switch 400, causing the switch state to change and output a valid electrical signal. This signal triggering process continues until the pawl signal trigger lever 300 contacts the limiting part 113 on the second mounting housing 120. At this point, the movement of the pawl signal trigger lever 300 is mechanically blocked and cannot continue to rotate, but the pawl 2 still needs to complete its designed stroke under the action of external force.

[0072] In the second stage, after the pawl signal trigger lever 300 is blocked by the limiting part 113, the pawl 2 continues to rotate in the unlocking direction, causing the pawl lever 200 to rotate further. At this time, since the pawl signal trigger lever 300 can no longer move, the pawl lever 200 begins to compress the drive spring 500, causing it to undergo elastic deformation. The drive spring 500 absorbs the excess stroke of the pawl 2 through its own compression deformation, while maintaining a stable pressure on the pawl signal trigger lever 300, ensuring that the pawl switch 400 is always in the triggered state. This mechanism allows the mechanism to adapt to the full stroke movement of the pawl 2 within a limited space.

[0073] Once the external driving force is released, the mechanism enters the reset phase. First, the pawl return spring 600 releases its stored elastic potential energy, pushing the pawl lever 200 to rotate in the opposite direction, thereby causing the pawl 2 to return to the fully locked position. Simultaneously, the pawl signal trigger lever return spring 700 begins to function, generating a restoring torque to drive the pawl signal trigger lever 300 to rotate away from the limit part 113. During the reset process, when the pawl signal trigger lever 300 approaches its initial position, it comes into contact with the buffer block 800. The buffer block 800 absorbs impact energy through elastic deformation, effectively reducing noise and minimizing impact damage.

[0074] After the entire workflow is completed, all components accurately return to their initial positions under the action of their respective return springs. The drive spring 500 returns to its pre-compressed state, and the pawl switch 400 returns to its untriggered state. The mechanism is fully prepared for the next work cycle. This precise and coordinated working mechanism ensures the reliability of signal triggering and the smoothness of mechanism movement, while significantly improving the product's service life.

[0075] It should be noted that the technical solutions in the various embodiments of this application can be combined with each other, but the basis for such combination is that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist, that is, it is not within the protection scope of this application.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A spring driven signal triggering mechanism, characterized in that, include: case; A pawl is rotatably mounted on the housing. A pawl lever is rotatably mounted on the housing and fixedly connected to one end of the pawl; A pawl signal trigger rod is rotatably mounted on the housing. A pawl switch is located on the movement path of the pawl signal trigger lever and can be actuated by the pawl signal trigger lever; and A drive spring is connected between the pawl lever and the pawl signal trigger lever; The housing is provided with a limiting part to restrict the travel of the pawl signal trigger rod; When the pawl rotates from the fully locked position to the unlocked position, the rotation of the pawl is transmitted through the pawl lever and the drive spring, driving the pawl signal trigger lever to rotate and triggering the pawl switch until the pawl signal trigger lever contacts the limiting part; When the pawl signal trigger rod contacts the limiting part, the pawl can continue to rotate in the unlocking direction and compress the drive spring through the pawl lever, so that the pawl completes the remaining stroke.

2. The spring driven signal triggering mechanism according to claim 1, characterized in that The housing is an L-shaped housing, including a first mounting housing, a second mounting housing, and an L-shaped top cover. The first mounting housing and the second mounting housing are respectively fixedly assembled with the L-shaped top cover to obtain the housing, which has a component installation space inside.

3. The spring driven signal triggering mechanism according to claim 2, characterized in that The pawl is rotatably disposed outside the first mounting housing. The first mounting housing has a through pawl drive channel. The pawl lever is rotatably disposed inside the first mounting housing via a pawl rivet and is fixedly connected to one end of the pawl via the pawl drive channel.

4. The spring driven signal triggering mechanism according to claim 2, wherein, The pawl signal trigger rod is rotatably disposed within the second mounting housing, and the pawl switch is fixed within the second mounting housing; the limiting part is integrally formed with the second mounting housing or fixed within the second mounting housing.

5. The spring driven signal triggering mechanism of claim 1, wherein, The pawl lever has a groove formed on its body, and a drive spring fixing shaft is formed in the middle of the groove; the drive spring is sleeved on the drive spring fixing shaft, with one end abutting against the groove wall and the other end abutting against one end of the pawl signal trigger lever.

6. The spring driven signal triggering mechanism according to claim 3, wherein, It also includes a pawl return spring. The first mounting housing has a pawl return spring fixing shaft inside. The pawl return spring is sleeved on the pawl return spring fixing shaft, with one end abutting against the inner wall of the first mounting housing and the other end abutting against the pawl lever, for driving the pawl to reset to the fully locked position.

7. The spring driven signal triggering mechanism of claim 4, wherein, It also includes a pawl signal trigger rod reset spring, which acts on the pawl signal trigger rod to drive it to reset in a direction away from the limiting part.

8. The spring driven signal triggering mechanism according to claim 7, wherein, It also includes a buffer block, which is disposed on the movement path of the pawl signal trigger rod, and is used to provide buffering when the pawl signal trigger rod is reset, so as to absorb impact energy and reduce noise.

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