A luggage quick release device on a motorcycle riding equipment

Abstract

The utility model relates to the field of motorcycle riding equipment, especially a kind of fast disassembly device of motorcycle riding equipment's luggage, including the base plate of being fixedly connected on riding equipment and having lock slot, and the fast disassembly plate of fixedly connecting luggage, with handle (handle inside has button).Its characterized by: fast disassembly plate is rotatably provided with lock catch component (hook with rotation axis point, one end is bent into lock tongue), also be provided with connecting rod assembly and first elastic component;Connecting rod assembly one end is connected button, other end is connected hook;First elastic component acts on hook, so that lock tongue has the rotating tendency towards locking position, and elastic lock is entered base plate lock slot to realize locking;When pressing button, button is rotated around axis point by connecting rod assembly to drive hook to overcome the force of elastic component, so that lock tongue exits lock slot and is unlocked.The scheme can improve the reliability of lock catch mechanism, prevent unlocking failure and enhance assembly guiding property.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle riding equipment technology, and in particular to a quick-release device for bags on motorcycle riding equipment. Background Technology

[0002] In the field of motorcycle riding equipment, quick-release bag securing devices are crucial for improving user convenience. Existing technology, such as Chinese patent CN220315168U, discloses an "anti-theft lock for motorcycle riding equipment," which uses a male buckle (equivalent to the base plate in this case) fixed to the vehicle body and a female buckle (equivalent to the quick-release plate in this case) fixed to the bag. This solution uses a handlebar button to drive a series of contact-operated components (including a lock rotating plate, a lock linkage assembly, a lock pressure plate, etc.), ultimately controlling the sliding extension and retraction of the lock tongue within the male buckle to achieve locking and unlocking. An anti-theft lock hole is also designed to enhance security.

[0003] However, the solution described in CN220315168U has significant structural defects. First, its transmission mechanism (handlebar button → latch rotating plate → latch linkage assembly → latch pressure plate → latch assembly → latch bolt) relies on multi-stage contact-type cooperation (non-rigid connection). For example, the latch rotating plate and the latch linkage assembly only have a contact force relationship. This design is prone to failure in force transmission due to misalignment under actual complex working conditions (such as vibration, component wear, or slight deformation), causing the entire unlocking mechanism to malfunction and resulting in insufficient reliability. Second, its core locking mechanism relies on the sliding friction pair (especially involving inclined surface cooperation) between the latch pressure plate and the latch assembly to control the advance and retreat of the bolt. Motorcycle riding environments are often accompanied by the intrusion of mud and sand. Once mud and sand enter this cooperation gap, it is very easy to cause sliding jamming. At this time, even if the button is pressed with force, the bolt is difficult to retract smoothly, resulting in difficulty in unlocking or even complete failure.

[0004] Therefore, there is an urgent need in this field for a more reliable and interference-resistant quick-release device for motorcycle bags. An ideal solution should avoid complex contact-type drive chains and reduce sliding friction pairs susceptible to mud and sand, thereby improving the stability and durability of the device in harsh riding environments and ensuring that users can always conveniently and reliably lock and unlock their bags. Summary of the Invention

[0005] In order to solve the above problems, the purpose of this utility model is to provide a quick-release device for bags on motorcycle riding equipment, which has the advantages of improving the reliability of the locking mechanism, preventing unlocking failure, and enhancing assembly guidance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides a quick-release device for a bag on a motorcycle riding device, the technical solution of which is as follows: A quick-release device for a bag on a motorcycle riding device includes: a base plate for fixing to the motorcycle riding device, the base plate having a locking groove; a quick-release plate for fixing the bag, the quick-release plate having a handle, and a button inside the handle; characterized in that: a locking component is rotatably arranged inside the quick-release plate, the locking component being a locking hook with a rotation axis, one end of the locking hook being bent to form a locking tongue; a connecting rod assembly and a first elastic component are also provided inside the quick-release plate; one end of the connecting rod assembly is driven to the button, and the other end is driven to the locking hook; the first elastic component acts on the locking hook, causing the locking tongue to have a tendency to rotate toward the locking position; the locking tongue elastically locks into the locking groove of the base plate under the action of the first elastic component, realizing the locking of the base plate and the quick-release plate; when the button is pressed, the button drives the locking hook to overcome the force of the first elastic component and rotate around its rotation axis through the connecting rod assembly, causing the locking tongue to exit the locking groove, realizing unlocking.

[0008] This technical solution fundamentally avoids the jamming problem caused by mud and sand intrusion by designing the locking component as a hook structure that rotates around a pivot point, replacing the existing locking tongue movement method that relies on sliding friction pairs. The pivot point of the hook's rotation fixes the movement trajectory of the locking tongue, and the linkage assembly, as a rigid transmission mechanism, directly connects the button and the hook, eliminating the risk of misalignment in multi-stage contact transmission. The elastic force applied by the first elastic component ensures that the locking tongue always tends to automatically lock into the locking groove, ensuring the stability of the locked state. When the button is pressed, the linkage assembly converts the linear pressing action into an unlocking action of the hook rotating around the pivot point, allowing the locking tongue to disengage from the locking groove. The elastic cooperation mechanism between the locking tongue and the locking groove ensures locking strength while achieving unlocking through rotational movement rather than sliding friction, significantly improving the reliability of the device in environments with vibration, wear, or mud and sand.

[0009] Furthermore, this application proposes that the lock hook has a lever-type structure; both the connecting rod assembly and the first elastic component are connected to the inner end of the lock hook, and the lever arm L1 from the inner end to the rotation axis is less than the lever arm L2 from the bolt to the rotation axis. This solution, by designing the lock hook as a lever-type structure, amplifies the operating force using the lever principle, enabling the connecting rod assembly and the first elastic component to generate a larger bolt action torque when acting on the inner end of the lock hook. Specifically, the connection point of the connecting rod assembly and the elastic component is located at the inner end of the lock hook, and the lever arm L1 at the inner end is limited to be less than the lever arm L2 at the bolt end, forming a lever structure. This structure allows the connecting rod assembly to apply only a small force to overcome the resistance of the first elastic component when the button is pressed, driving the lock hook to rotate around the axis with a larger bolt displacement, thus reducing the operating force and ensuring the reliability of the bolt completely exiting the lock slot. Simultaneously, the force-saving lever structure reduces the load on the transmission links, avoiding transmission failure due to vibration or wear.

[0010] Furthermore, this application proposes a linkage assembly comprising: a rotating paddle, rotatably mounted within a quick-release plate and connected to a button drive; and a linkage, with both ends rotatably connected to the output end of the rotating paddle and the inner end of the locking hook, respectively. This solution replaces the original contact-type engagement with a rigid transmission structure between the rotating paddle and the linkage, forming a complete force transmission path. The design of connecting the rotating paddle to the button drive converts the linear pressing action of the button into rotational motion, avoiding the engagement gaps in traditional multi-stage contact transmissions. The structure of connecting both ends of the linkage to the output end of the rotating paddle and the inner end of the locking hook, respectively, forms a double-pivot rigid transmission chain, ensuring that the driving force of pressing the button can be transmitted to the locking hook without attenuation. The rotational connection between the linkage and the output end of the rotating paddle allows for angle changes during transmission while maintaining the stability of the mechanical connection; the rotational connection between the linkage and the inner end of the locking hook precisely converts the rotational displacement of the rotating paddle into the unlocking stroke of the locking hook through the lever principle, eliminating the idle stroke problem common in contact transmissions.

[0011] Furthermore, this application proposes that anti-theft lock holes are correspondingly provided on the quick-release plate and the rotating lever; when the external locking rod passes through the anti-theft lock holes of both the quick-release plate and the rotating lever simultaneously, the rotation of the rotating lever is restricted, keeping the device in a locked state. This technical solution achieves a dual locking mechanism by adding an anti-theft lock hole structure. The anti-theft lock holes of the quick-release plate and the rotating lever are correspondingly provided, allowing the external locking rod to pass through both holes simultaneously, forming a physical constraint on the rotational freedom of the rotating lever. When the locking rod is inserted, the rotating lever cannot rotate around its axis of rotation, thereby preventing the linkage assembly from driving the lock hook and ensuring that the bolt is always in the locked position within the lock groove. This design directly blocks the initial action of the unlocking transmission chain through the intervention of the external lock, avoiding accidental unlocking due to failure of the internal transmission mechanism, while improving the anti-theft performance of the device in the non-use state. The concentrically provided anti-theft lock hole structure ensures precise constraint on the relative position of the rotating lever and the quick-release plate when the locking rod is inserted, preventing the lock from being damaged or bypassed by external forces.

[0012] Furthermore, this application proposes that the quick-release plate has an internal movable cavity, and the side wall has an opening communicating with the movable cavity; the locking hook is rotatably disposed in the movable cavity, and its locking tongue can extend or retract from the opening; the end face of the locking hook away from the rotation axis is a first arc surface, and the wall surface in the movable cavity opposite to the first arc surface is a second arc surface; from the inside of the movable cavity to the opening, the gap between the second arc surface and the first arc surface gradually narrows, forming a guide extrusion structure; when the locking tongue extends out of the opening and bears the force from the locking groove and the first elastic component, the first arc surface and the second arc surface are tightly abutted along the guide extrusion structure.

[0013] This design fully accommodates the locking hook within the movable cavity of the quick-release plate, and provides a side wall opening for the extension and retraction of the locking tongue. This provides a stable movement space for the locking hook while preventing external mud and sand from directly intruding into the pivot area between the locking hook and the quick-release plate. Specifically, the gap between the second arc surface and the first arc surface gradually narrows, forming a guiding compression structure. When the locking tongue extends out of the opening and bears the force from the lock groove and the first elastic component, the first arc surface and the second arc surface abut tightly along the guiding compression structure. This design has the following three advantages: 1. Part of the tension on the locking hook is transmitted to the quick-release plate through the abutment of the first and second arc surfaces, thereby relieving the load on the root of the locking tongue; 2. The tightly abutting first and second arc surfaces form a radial sealing barrier inside the opening of the movable cavity, preventing external mud and sand from intruding into the interior of the movable cavity; 3. Inside the movable cavity, a movement gap is maintained between the first and second arc surfaces, providing ample space for the rotational movement of the locking hook.

[0014] Furthermore, this application proposes that the quick-release plate is U-shaped, forming a U-shaped opening within it; the opening is located on the inner wall of the U-shaped opening; the base plate is adapted to the shape of the U-shaped opening, and a locking groove is formed on the side wall of the base plate corresponding to the opening; in the locked state, the base plate is embedded in the U-shaped opening of the quick-release plate. By designing the quick-release plate as a U-shaped structure and forming a U-shaped opening, the base plate and the quick-release plate form a geometrically complementary assembly relationship, utilizing the wrapping effect of the U-shaped opening on the base plate to achieve lateral positioning constraint. The technical feature of the opening being located on the inner wall of the U-shaped opening ensures that the extension and retraction direction of the latch is spatially orthogonal to the embedding direction of the base plate, preventing mud and sand from intruding into the latch's movement path along the sliding direction. The technical means of adapting the base plate to the shape of the U-shaped opening ensures that both have a clear guiding reference during assembly, eliminating the risk of assembly misalignment through geometric matching. The design of the locking groove being formed on the side wall of the base plate corresponding to the opening allows the latch to be directly embedded in the closed groove of the base plate's side wall when locked, avoiding mud and sand accumulation caused by exposed latch. The technical feature of the base plate being fully embedded in the U-shaped opening when locked forms a three-sided surrounding mechanical limiting structure, effectively preventing accidental unlocking caused by riding vibrations.

[0015] Furthermore, this application proposes that the quick-release plate slides along the base plate via a U-shaped opening to achieve assembly. This technical solution designs the quick-release plate with a U-shaped opening structure, enabling it to slide along the base plate to complete assembly. The U-shaped opening and the base plate's shape adapt to form a sliding guide path, eliminating the need for additional positioning components or complex contact mating; precise alignment is achieved directly through structural matching. The sliding assembly method utilizes the large surface area contact between the U-shaped opening and the base plate for limiting movement, reducing assembly difficulty. In addition, the mechanical guiding action during sliding automatically corrects assembly deviations, ensuring accurate engagement between the latch and the lock groove, thereby simplifying operation while improving locking reliability.

[0016] Furthermore, this application proposes that the base plate edge has a first inclined surface, which gradually slopes downwards from the outside to the inside; the inner wall of the U-shaped opening has a second inclined surface, which gradually slopes upwards from the outside to the inside; when the base plate is inserted into the U-shaped opening, the first and second inclined surfaces press against each other to achieve thickness-direction limiting. This technical solution achieves thickness-direction limiting through a mechanical structure of inclined surface engagement. The first inclined surface of the base plate edge is designed as an inclined surface with a higher outer surface and a lower inner surface, forming a complementary wedge structure with the second inclined surface of the U-shaped opening inner wall of the quick-release plate, which has a lower outer surface and a higher inner surface. When the base plate is inserted into the quick-release plate, the two sets of inclined surfaces generate vertical force components through mutual pressing, forming a self-locking effect. This inclined surface pressing method can achieve physical constraint in the thickness direction without additional fasteners, effectively preventing vertical misalignment caused by bumps and vibrations during riding. At the same time, the inclined surface engagement is a surface contact form, which has a larger contact area and stress dispersion capability compared to traditional point contact or line contact structures, improving connection stability and reducing the risk of local wear. The unique design of two sets of inclined surfaces tilting in opposite directions allows the inclined contact surfaces to automatically generate a guiding effect during the assembly process, ensuring a tight fit is naturally formed when the assembly is in place.

[0017] Furthermore, this application proposes that the outer end face of the latch of the lock hook is a first guide surface; the side wall of the base plate on the front side of the lock groove is provided with a second guide surface; when the quick-release plate slides along the base plate, the second guide surface interacts with the first guide surface, guiding the latch to engage in the lock groove. This technical solution achieves precise guidance of the locking mechanism through the synergistic effect of the two guide surfaces. The first guide surface at the outer end of the latch and the second guide surface on the side wall of the base plate form an inclined fit. During the sliding assembly process of the quick-release plate, the two guide surfaces come into contact and slide relative to each other, using the inclined effect to convert the lateral displacement of the latch into the rotational displacement of the lock hook around the rotation axis. This design ensures that the latch does not experience rigid obstruction when contacting the side wall of the base plate, but rather the sliding friction of the guide surfaces guides the latch to automatically adjust its position until the latch is fully engaged in the lock groove to complete the locking.

[0018] Furthermore, this application proposes that a guide post be fixedly installed inside the handle; the button be slidably sleeved on the guide post; a second elastic component be installed between the button and the handle for driving the button to reset; and the input end of the rotary paddle be connected to the end of the button. This technical solution provides a precise linear sliding path for the button through the fixed installation of the guide post. The design of the button being slidably sleeved on the guide post ensures that the button maintains linear motion during pressing, eliminating the possible gaps in multi-stage contact transmission. The second elastic component not only enables automatic button reset but also ensures that the locking hook remains in the locked position when not in operation by continuously applying a reverse force. In particular, directly connecting the input end of the rotary paddle to the end of the button establishes a rigid driving connection, allowing the pressing force of the button to be directly and losslessly transmitted to the rotary paddle, thereby significantly improving transmission reliability and operational sensitivity.

[0019] As can be seen from the above, the quick-release device for a bag on a motorcycle riding device provided in this application and its locking structure drive the locking tongue to move through the rigid connection between the connecting rod assembly and the locking hook, avoiding the failure of force transmission caused by contact engagement. At the same time, the use of arc surface and guide surface design effectively prevents sliding jamming and improves assembly accuracy. It has the advantages of improving the reliability of the locking mechanism, preventing unlocking failure and enhancing assembly guidance. Attached Figure Description

[0020] Figure 1 This application provides a schematic diagram of a quick-release bag / suitcase device for a motorcycle riding equipment.

[0021] Figure 2 This application provides an assembly diagram of the base plate and the quick-release plate.

[0022] Figure 3 The diagram provided for this application is of a quick-release plate.

[0023] Figure 4 The diagram provided for this application is of the base plate.

[0024] Figure 5 This application provides a schematic diagram of the internal transmission of the quick-release plate. Figure 1 .

[0025] Figure 6 This application provides a schematic diagram of the internal transmission of the quick-release plate. Figure 2 . Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In existing technologies, quick-release bag securing devices are commonly used in the motorcycle riding equipment field for convenient assembly and disassembly. Traditional solutions use a multi-stage contact transmission chain to drive the locking tongue to slide and achieve locking and unlocking. This type of structure is prone to misalignment during vibration or component wear, leading to failure in force transmission. Furthermore, the sliding friction pair between the locking tongue and the locking groove is susceptible to mud and sand intrusion, causing unlocking jams and severely affecting the reliability of the device. For example, in off-road riding scenarios, if mud and sand splash into the locking mechanism, even pressing the unlock button forcefully may not retract the locking tongue, preventing the bag from being properly disassembled.

[0032] To address the aforementioned problems and the shortcomings of existing technologies, such as low reliability of the transmission chain and easy jamming of friction pairs, the inventors realized the need to change the movement mode of the locking tongue. Analysis revealed that sliding friction pairs are sensitive to foreign objects and prone to wear, while contact transmission chains suffer from accumulated errors in the fit clearance. Therefore, a locking hook with a fixed rotating axis was proposed to replace the sliding friction pair, changing linear sliding to rotational motion around an axis. Simultaneously, a rigid linkage assembly was designed to directly connect the button and the locking hook, eliminating intermediate links in multi-stage contact transmissions. This reconfiguration allows the locking tongue's movement trajectory to be precisely controlled by the rotating axis, shortens the transmission path, and the rigid connection prevents misalignment.

[0033] like Figure 1-6 As shown, this embodiment proposes a quick-release device for a bag on a motorcycle riding device, including a base plate 1 fixed to the motorcycle riding device, the base plate 1 having a locking groove 2; a quick-release plate 3 fixed to the bag, the quick-release plate 3 having a handle 4, and a button 5 inside the handle 4; a locking hook 6 with a rotation axis 7 rotatably disposed inside the quick-release plate 3, one end of the locking hook 6 being bent to form a locking tongue 8; a connecting rod assembly and a first elastic component 10 are also disposed inside the quick-release plate 3; one end of the connecting rod assembly is driven to the button 5, and the other end is driven to the locking hook 6; the first elastic component 10 acts on the locking hook 6, causing the locking tongue 8 to tend to rotate toward the locking position; the locking tongue 8 elastically locks into the locking groove 2 of the base plate 1 under the action of the first elastic component 10 to achieve locking; when the button 5 is pressed, the button 5 drives the locking hook 6 to overcome the force of the first elastic component 10 and rotate around the rotation axis 7, causing the locking tongue 8 to exit the locking groove 2 to achieve unlocking.

[0034] The base plate 1 refers to a metal or engineering plastic plate-like structure fixed to the motorcycle frame or cargo rack, which can be fixed by bolts or welding. The locking groove 2 on its surface is used to mechanically interlock with the locking tongue 8. The quick-release plate 3 is a mounting plate connected to the bottom of the bag, usually manufactured using injection molding. The handle 4 is integrated into the quick-release plate 3 for easy gripping and operation. The locking hook 6 is a lever-type metal component with a fixed rotation axis 7, which can be manufactured using stamping. One end is bent to form the locking tongue 8 to achieve engagement with the locking groove 2. The linkage assembly is a transmission mechanism composed of rigid rods, which can be a combination of metal or non-metal linkages and a rotating paddle, used to convert the linear motion of the button 5 into the rotational motion of the locking hook 6. The first elastic component 10 is a mechanical element that provides a restoring elastic force, which can be a coil spring or torsion spring, acting on the locking hook 6 to keep the locking tongue 8 locked into the locking groove 2.

[0035] Specifically, the rotation of the locking hook 6 around a fixed rotation axis 7 completely replaces the linear sliding of the traditional locking tongue 8. The rotation trajectory is uniquely determined by the position of the rotation axis 7, eliminating the risk of mud and sand getting stuck in the sliding friction pair. The linkage assembly, as a rigid transmission mechanism, directly connects the button 5 and the locking hook 6. When the button 5 is pressed, the linkage assembly applies a thrust, causing the locking hook 6 to rotate against the spring force, and the locking tongue 8 exits the locking groove 2. During the locking process, the first elastic component 10 pushes the locking hook 6 to automatically reset, and the locking tongue 8 reliably engages in the locking groove 2 under the action of the spring force.

[0036] Compared to existing technologies, traditional solutions rely on the sliding friction of the locking tongue 8 within the guide groove to achieve locking. This solution, however, utilizes the rotation of the locking hook 6 around an axis, completely eliminating the sensitivity of the sliding friction pair to mud and sand. Existing multi-stage contact transmission chains suffer from accumulated clearances. This solution uses a rigid linkage assembly to directly drive the button 5 and the locking hook 6, avoiding intermediate connection errors. For example, in prior art document CN220315168U, the inclined sliding fit between the latch plate and the latch assembly is susceptible to interference from foreign objects. In contrast, the rigid connection between the rotating pivot point 7 of the locking hook 6 and the linkage assembly in this solution makes the transmission path more stable and reliable. Through these technical solutions, this application effectively solves the problems of easy failure in multi-stage contact transmission chains and jamming of sliding friction pairs. The rotating locking hook 6 structure prevents the movement trajectory of the locking tongue 8 from being interfered with by foreign objects, ensuring smooth unlocking even in muddy environments. The rigid linkage assembly shortens the transmission chain length, eliminating the risk of force transmission failure caused by clearances. The lever design of the locking hook 6 reduces the pressing force required for operation, improving the user experience. The automatic reset function of the first elastic component 10 ensures the stability of the locked state and prevents accidental unlocking due to vibration during riding.

[0037] In a specific implementation, the locking hook 6 has a lever-type structure. The connecting rod assembly and the first elastic component 10 are both connected to the inner end of the locking hook 6, and the lever arm L1 from the inner end to the rotation axis 7 is less than the lever arm L2 from the locking tongue 8 to the rotation axis 7. The lever-type structure means that when the locking hook 6 rotates around the rotation axis 7, its inner end and the locking tongue 8 are located on opposite sides of the rotation axis 7, forming a lever effect. Specifically, this can be achieved by setting a pivot hole in the middle of the locking hook 6, which is movably connected to the quick-release plate 3 via a pin. The inner end refers to the area on the locking hook 6 near the connection point between the connecting rod assembly and the first elastic component 10. Specifically, this can be achieved by setting a connecting hole or slot at one end of the locking hook 6 to fix the connecting rod assembly and the elastic component. This design concentrates the driving force on the short arm end of the lever, using the lever ratio to reduce the stroke at the operating end while increasing the rotation stroke of the locking tongue 8. The lever arm refers to the vertical distance from the rotation axis 7 to the line of action of the force. Specifically, the axial distance between the inner end connection point of the locking hook 6 and the locking tongue 8 can be adjusted so that the length of the inner end lever arm is less than the length of the locking tongue 8 end lever arm, thereby converting the input force into a larger displacement of the locking tongue 8.

[0038] Specifically, when button 5 is pressed, the linkage assembly applies a thrust to the inner end of the hook 6. Due to the shorter lever arm at the inner end, this thrust generates a torque at the rotation axis point 7 of the hook 6, causing the latch 8 to rotate around the axis with a longer lever arm. At this time, the resistance torque applied by the first elastic component 10 to the inner end of the hook 6 is overcome by the driving torque of the linkage assembly, and the latch 8 exits from the lock groove 2. Because the lever arm at the end of the latch 8 is longer, the linear displacement of the latch 8 is greater under the same rotation angle, ensuring complete disengagement from the lock groove 2. During the elastic reset phase, the first elastic component 10 applies a restoring torque through its inner end. Due to the longer lever arm at the end of the latch 8, the latch 8 can obtain a greater locking force under the same elastic force. Compared with the prior art, the existing solution relies on multi-stage contact transmission, and there is non-rigid contact between the linkage and the latch assembly, which is prone to force transmission failure due to vibration or wear. In contrast, this solution directly converts the operating force of button 5 into the rotational torque of the hook 6 through a rigidly connected lever structure, eliminating the fit gap in the intermediate transmission link. Meanwhile, existing solutions use sliding friction pairs to control the movement of the locking tongue 8, which is susceptible to mud and sand intrusion. This solution, however, replaces sliding friction with rotational motion, reducing the risk of mud and sand jamming. Through these technical solutions, this application avoids the force attenuation problem of multi-stage contact transmission chains, ensuring that the operating force is effectively transmitted to the locking tongue 8. Simultaneously, the use of a force-saving lever structure reduces the pressing force required for unlocking, improving operational comfort. The rotational motion of the locking hook 6 reduces the use of sliding friction pairs, lowering the probability of jamming caused by mud and sand intrusion and enhancing reliability in harsh environments.

[0039] In a specific implementation scheme, the linkage assembly includes a rotating paddle 11 and a connecting rod 12. The rotating paddle 11 is rotatably mounted within the quick-release plate 3 and driven by the button 5. The two ends of the connecting rod 12 are rotatably connected to the output end of the rotating paddle 11 and the inner end of the locking hook 6, respectively. The rotating paddle 11 is a transmission component that converts the linear motion of the button 5 into rotational motion. Specifically, it can be implemented using a metal sheet or plastic part with a rotating shaft. Its input end, in contact with the button 5, can be equipped with a cam structure or a sliding groove structure to achieve motion conversion. The connecting rod 12 is a rigid connecting component that transmits the output power of the rotating paddle 11. Specifically, it can be implemented using a metal rod or a high-strength plastic rod. Its two ends are rotatably connected to the rotating paddle 11 and the locking hook 6 through hinge holes or bearings. In detail, when the button 5 is pressed, its linear motion drives the rotating paddle 11 to rotate around its rotating shaft, and the output end of the rotating paddle 11 causes the connecting rod 12 to displace. Since the two ends of the connecting rod 12 are rotatably connected to the rotating paddle 11 and the locking hook 6 respectively, the connecting rod 12 converts the rotational motion of the rotating paddle 11 into the reverse rotational motion of the locking hook 6 around its rotation axis 7. In this process, the double pivot connection between the connecting rod 12, the rotating paddle 11, and the locking hook 6 forms a rigid transmission chain, avoiding the interruption of force transmission caused by the gap between components in contact transmission.

[0040] Compared to existing technologies, in conventional solutions, button 5 pushes the latch rotating plate via contact, which in turn pushes the latch linkage assembly. This multi-stage, non-rigid contact transmission is prone to misalignment under vibration or wear. In contrast, this solution uses a rigid connection between the rotating paddle 11 and the connecting rod 12 to form a continuous, closed transmission path, eliminating the problem of accumulated gaps in contact transmission. Through this technical solution, this application achieves efficient and reliable transmission of the operating force of button 5 to the action of the latch 6, solving the problem of misalignment in multi-stage contact transmission chains. The double-pivot connection between the connecting rod 12 and the rotating paddle 11 ensures the rigidity of the transmission path, avoiding idle travel or force attenuation caused by vibration or wear in traditional solutions. The mechanical design of the rotating paddle 11, which converts linear motion into rotational motion, allows the connecting rod 12 to generate sufficient displacement of the latch 6 within a limited space, thus enabling stable unlocking even under complex working conditions.

[0041] In a further preferred embodiment, anti-theft lock holes 13 are correspondingly provided on the quick-release plate 3 and the rotating lever 11. When the external locking rod simultaneously passes through the anti-theft lock holes 13 of both the quick-release plate 3 and the rotating lever 11, the rotation of the rotating lever 11 is restricted, keeping the device in a locked state. The anti-theft lock hole 13 refers to a through-hole structure passing through both the quick-release plate 3 and the rotating lever 11, with the two holes remaining coaxially aligned in the locked state. This hole is designed to receive the insertion of the external locking rod, physically constraining the rotational freedom of the rotating lever 11. The external locking rod refers to a locking component independent of the device, specifically a U-shaped locking rod or a straight rod lock, with its diameter forming a clearance fit with the anti-theft lock hole 13. This component, through the hole simultaneously passing through both the quick-release plate 3 and the rotating lever 11, forms a rigid constraint on the initial movement of the transmission chain. Specifically, when the locking rod is inserted into the aligned anti-theft lock hole 13, a non-rotatable rigid connection is formed between the rotating lever 11 and the quick-release plate 3. At this time, pressing button 5 cannot drive the linkage assembly via rotating paddle 11, the rotation axis 7 of lock hook 6 remains fixed, and the bolt 8 remains locked in the lock groove 2 under the action of the elastic component. This constraint acts directly on the starting end of the unlocking transmission chain, and even if the linkage assembly is worn or deformed, the physical blockage of the lock rod can still ensure the maintenance of the locking state. Through the above technical solution, this application effectively prevents the transmission mechanism from malfunctioning when an external lock is involved, ensuring that the bolt 8 cannot disengage from the lock groove 2 in the anti-theft state. At the same time, it avoids the unlocking failure problem caused by mud and sand intrusion into the sliding friction pair in the prior art. By replacing the complex transmission chain locking mechanism with rigid constraint, the device can maintain reliable anti-theft performance even in harsh environments.

[0042] like Figure 5 and 6 As shown, the quick-release plate 3 has a movable cavity 15 inside, and an opening 16 communicating with the movable cavity 15 is provided on the side wall; the locking hook 6 is rotatably disposed in the movable cavity 15, and its locking tongue 8 can extend or retract from the opening 16; the end face of the locking hook 6 away from the rotation axis 7 is a first arc surface 81, and the wall surface in the movable cavity 15 opposite to the first arc surface 81 is a second arc surface 151; from the inside of the movable cavity 15 to the opening 16, the gap between the second arc surface 151 and the first arc surface 81 gradually narrows, forming a guide extrusion structure; when the locking tongue 8 extends out of the opening 16 and bears the force from the locking groove 2 and the first elastic component 10, the first arc surface 81 and the second arc surface 151 are tightly abutted along the guide extrusion structure.

[0043] The movable cavity 15 refers to the enclosed space inside the quick-release plate 3 used to accommodate the locking hook 6. This cavity structure can be formed through injection molding or machining, providing stable movement trajectory constraints for the locking hook 6. The opening 16 refers to the through-channel in the side wall of the movable cavity 15, which can be implemented using a rectangular or arc-shaped slot structure, allowing the locking tongue 8 to extend or retract during locking and unlocking. The first and second arc-shaped eccentric settings refer to the curved surfaces with different centers on the end face of the locking hook 6 and the wall of the movable cavity 15. This can be achieved through turning or mold forming processes, ensuring that the end face of the locking hook 6 maintains equidistant contact with the cavity wall during rotation.

[0044] Specifically, the locking hook 6 is completely confined to the movable cavity 15, and its locking tongue 8 engages with the locking groove 2 of the base plate 1 through the opening 16. This design, by completely accommodating the locking hook within the movable cavity of the quick-release plate and providing a side wall opening for the extension and retraction of the locking tongue, provides a stable movement space for the locking hook and prevents external mud and sand from directly intruding into the pivot area between the locking hook and the quick-release plate. Specifically, this design has the following three effects: 1. Part of the tension on the locking hook 6 is transmitted to the quick-release plate 3 through the contact point between the first arc surface 81 and the second arc surface 151, thereby relieving the load on the root of the locking tongue 8; 2. The tightly contacting first arc surface 81 and second arc surface 151 form a radial sealing barrier inside the opening 16 of the movable cavity 15, preventing external mud and sand from intruding into the interior of the movable cavity 15; 3. Inside the movable cavity 15, a movement gap is maintained between the first arc surface 81 and the second arc surface 151, providing ample space for the rotational movement of the locking hook 6.

[0045] like Figure 1-4As shown, the quick-release plate 3 is U-shaped with an internal U-shaped opening 18. An opening 16 is located on the inner wall of the U-shaped opening 18. The base plate 1 is shaped to match the U-shaped opening 18. A locking groove 2 is formed on the side wall of the base plate 1 corresponding to the opening 16. In the locked state, the base plate 1 is embedded in the U-shaped opening 18 of the quick-release plate 3. The U-shape of the quick-release plate 3 refers to its main structure having a U-shaped cross-section, forming a U-shaped recessed area. This can be achieved using stamping or injection molding processes. The U-shaped recessed area accommodates the base plate 1. The opening 16 being located on the inner wall of the U-shaped opening 18 means that the telescopic channel of the locking tongue 8 is located on the inner wall of the U-shaped recessed area. This can be achieved by creating a through hole or slot inside the U-shaped opening 18. The locking tongue 8 engages with the locking groove 2 on the side wall of the base plate 1 through this opening 16. The shape matching between the base plate 1 and the U-shaped opening 18 means that the outer contour of the base plate 1 and the internal space of the U-shaped recessed area form a clearance fit or transition fit, ensuring that the base plate 1 has a clear positioning reference when it is inserted. The locking groove 2 is opened on the side wall of the base plate 1 corresponding to the opening 16, which means that the side wall of the base plate 1 has a groove that matches the shape of the locking tongue 8. Specifically, it can be formed by milling or stamping. After the locking tongue 8 is inserted into the groove, a mechanical interlock is formed.

[0046] When the base plate 1 is inserted into the U-shaped opening 18 of the quick-release plate 3, the three side walls of the U-shaped opening 18 contact the outer side wall of the base plate 1, limiting the displacement of the base plate 1 in the transverse plane through the complementary relationship of geometric shapes. The extension and retraction direction of the latch 8 is perpendicular to the insertion direction of the base plate 1, so that the latch 8 is inserted into the lock groove 2 along the normal direction of the side wall of the base plate 1 when locked. The lock groove 2 of the side wall of the base plate 1 forms a closed cavity. After the latch 8 is inserted, its exposed part is blocked by the side wall of the U-shaped opening 18, further reducing the accumulation of mud and sand in the mating area of ​​the latch 8 and the lock groove 2. The wrapping effect of the U-shaped opening 18 on the base plate 1 prevents the two from generating relative torsion under vibration conditions, preventing the latch 8 from accidentally dislodging from the lock groove 2 due to the displacement of the base plate 1.

[0047] In a further embodiment, the quick-release plate 3 is assembled by sliding along the base plate 1 via a U-shaped opening 18. The opening direction of the U-shaped opening 18 on the quick-release plate 3 is consistent with the insertion direction of the base plate 1, achieving sliding guidance through shape matching. The U-shaped opening 18 refers to the U-shaped recessed area formed on the inner side of the quick-release plate 3. This structure can wrap around the edge of the base plate 1 and restrict its lateral displacement, providing a stable sliding path through geometric adaptation. Specifically, the inner wall of the U-shaped opening 18 of the quick-release plate 3 forms a clearance fit with the outer contour of the base plate 1. During assembly, the operator aligns the U-shaped opening 18 with the edge of the base plate 1 and pushes the quick-release plate 3 along its length. As the base plate 1 inserts into the U-shaped opening 18, the side walls contact the base plate 1, generating sliding friction until the locking tongue 8 automatically engages with the locking groove 2 to complete locking. During sliding, a surface contact guide is formed between the side wall of the U-shaped opening 18 and the base plate 1. Meanwhile, the shape adaptation between the U-shaped opening 18 and the base plate 1 can automatically correct assembly deviations during sliding, ensuring accurate alignment of the locking tongue 8 and the locking groove 2.

[0048] like Figure 2-4As shown, the base plate 1 has a first inclined surface 19 at its edge, which gradually slopes downwards from the outside to the inside; the inner wall of the U-shaped opening 18 has a second inclined surface 20, which gradually slopes upwards from the outside to the inside; when the base plate 1 is inserted into the U-shaped opening 18, the first inclined surface 19 and the second inclined surface 20 press against each other to achieve thickness-direction limiting. The first inclined surface 19 refers to the inclined surface formed by machining the edge of the base plate 1, which can be achieved by milling or stamping. This inclined surface, with its higher outer slope and lower inner slope, generates a downward clamping force with the quick-release plate 3 during assembly. The second inclined surface 20 refers to the reverse inclined surface formed by machining the inner wall of the U-shaped opening 18 of the quick-release plate 3, which can be achieved by CNC machining or mold forming. This inclined surface, with its lower outer slope and higher inner slope, generates an upward clamping force with the base plate 1 during assembly. The thickness-direction limiting refers to the mechanical constraint formed in the vertical direction by the complementary engagement of two sets of inclined surfaces, preventing relative displacement in the vertical direction between the base plate 1 and the quick-release plate 3. Specifically, during the process of the base plate 1 being inserted into the U-shaped opening 18 of the quick-release plate 3, the first inclined surface 19 and the second inclined surface 20 generate a sliding guiding effect upon contact. As the assembly depth increases, the two sets of inclined surfaces gradually press together, and the downward tilting trend of the first inclined surface 19 and the upward tilting trend of the second inclined surface 20 form a mutually restraining wedge structure. At this time, the normal force generated by the contact surface of the inclined surfaces is decomposed into a vertical component force, forming a self-locking effect. Due to the large contact area of ​​the two sets of inclined surfaces, the stress is evenly distributed throughout the contact area, avoiding wear or deformation caused by local stress concentration. Under vibration or external impact conditions, the reverse component force generated by the inclined surface engagement can counteract the vertical displacement trend, maintaining a stable connection between the base plate 1 and the quick-release plate 3. Through the above technical solution, this application solves the problem of vertical displacement of the base plate 1 and the quick-release plate 3 caused by vibration or external force after assembly. The self-locking effect generated by the inclined plane pressing creates a stable mechanical constraint in the vertical direction, eliminating the need for additional bolts or clips. This structure effectively resists the impact of bumps and vibrations on connection stability during motorcycle riding, ensuring reliable fixation between the bag and the vehicle body. Simultaneously, the guiding effect of the inclined plane simplifies assembly; the user only needs to push the base plate 1 in the preset direction for automatic limit locking.

[0049] like Figure 3 and 4As shown, the outer end face of the latch 8 of the lock hook 6 is a first guide surface 21, and the side wall of the base plate 1 on the front side of the lock groove 2 is provided with a second guide surface 22. When the quick-release plate 3 slides along the base plate 1, the second guide surface 22 interacts with the first guide surface 21, guiding the latch 8 to engage with the lock groove 2. The first guide surface 21 refers to the inclined or arc-shaped structure formed at the outer end of the latch 8, which can be implemented using a slope, cone, or curved surface. This structure contacts the side wall of the base plate 1 and generates sliding friction during the sliding process. The second guide surface 22 refers to the inclined or arc-shaped structure formed on the front side wall of the lock groove 2 of the base plate 1, which can be implemented using a slope, cone, or curved surface complementary to the first guide surface 21. This structure is used to cooperate with the first guide surface 21 to form a sliding guide path. Specifically, during the sliding assembly process of the quick-release plate 3 and the base plate 1, the first guide surface 21 and the second guide surface 22 make priority contact, and the two generate relative sliding through the cooperation of the slope or curved surface. At this time, the latch 8 is subjected to a lateral force from the side wall of the base plate 1. This force is transmitted to the locking hook 6 through the first guide surface 21, driving the locking hook 6 to rotate around the rotation axis 7. The lateral displacement of the latch 8 is converted into rotational displacement, causing the latch 8 to gradually retract into the quick-release plate 3 until the locking groove 2 reaches directly below the latch 8. At this time, the first elastic component 10 drives the locking hook 6 to rotate in the opposite direction, and the latch 8 automatically engages with the locking groove 2 under the action of the elastic force to complete the locking. Through the above technical solution, this application solves the problem of guiding and aligning the latch 8 and the locking groove 2 when the quick-release plate 3 and the base plate 1 are slidably assembled, avoiding rigid collision between the latch 8 and the side wall of the base plate 1. Under the condition of mud and sand intrusion, the sliding friction of the guide surface can automatically remove foreign objects from the contact surface, ensuring that the latch 8 can reliably engage with the locking groove 2, and improving the operational reliability of the device in harsh environments.

[0050] like Figure 6As shown, a guide post 23 is fixedly installed inside the handle 4; the button 5 is slidably sleeved on the guide post 23; a second elastic component 24 is provided between the button 5 and the handle 4 for driving the button 5 to reset; the input end of the rotary lever 11 is connected to the end of the button 5. The guide post 23 refers to a columnar structure fixedly installed inside the handle 4, which can be made of metal or high-strength plastic, and its function is to provide linear motion trajectory restriction for the button 5. The button 5 being slidably sleeved on the guide post 23 means that a sleeve structure matching the outer diameter of the guide post 23 is provided inside the button 5, which can be made by injection molding or machining, and its function is to eliminate lateral offset during the movement of the button 5 through the cooperation of the sleeve and the guide post 23. The second elastic component 24 refers to a compression spring or elastic rubber component installed between the button 5 and the handle 4, which can be made of stainless steel spring or silicone material, and its function is to store energy through elastic deformation to achieve automatic reset of the button 5. The input end of the rotary paddle 11 is connected to the end of the button 5, meaning that the rotary paddle 11 and the button 5 are rigidly connected by a pin or snap-fit ​​structure. This can be achieved through welding or bolt fixing, and its function is to establish a direct force transmission path between the button 5 and the rotary paddle 11. Specifically, when the button 5 is pressed, its sleeve slides linearly along the guide post 23, pushing the rotary paddle 11 to rotate around a fixed fulcrum, which in turn drives the locking hook 6 to rotate via the connecting rod 12 to unlock the button. The second elastic component 24 is compressed during the pressing of the button 5 and, after the external force is released, drives the button 5 to slide back along the guide post 23 to reset. Because the guide post 23 restricts the degree of freedom of movement of the button 5, the button 5 only displaces in a single direction. The rigid connection between the rotary paddle 11 and the end of the button 5 allows the pressing force to be directly transmitted to the connecting rod assembly, eliminating force loss in contact transmission.

[0051] In summary, the quick-release device for a bag on a motorcycle riding device provided in this application and its locking structure drive the locking tongue 8 to move through the rigid connection between the connecting rod assembly and the locking hook 6, avoiding force transmission failure caused by contact engagement. At the same time, the use of arc surface and guide surface design effectively prevents sliding jamming and improves assembly accuracy. It has the advantages of improving the reliability of the locking mechanism, preventing unlocking failure, and enhancing assembly guidance.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A quick-release device for a bag / suitcase on a motorcycle riding device, comprising: A base plate (1) for fixing to a motorcycle riding device, wherein a locking groove (2) is provided on the base plate (1); A quick-release plate (3) for securing bags and luggage, the quick-release plate (3) is provided with a handle (4), and a button (5) is provided inside the handle (4); Its features are: The quick-release plate (3) is rotatably provided with a locking component, which is a locking hook (6) with a rotation axis (7), and one end of the locking hook (6) is bent to form a locking tongue (8). The quick-release plate (3) is also provided with a connecting rod assembly and a first elastic component (10). One end of the linkage assembly is driven to the button (5), and the other end is driven to the lock hook (6); The first elastic member (10) acts on the lock hook (6), causing the lock tongue (8) to have a tendency to rotate toward the locking position; The locking tongue (8) is elastically locked into the locking groove (2) of the base plate (1) under the action of the first elastic component (10), thereby locking the base plate (1) and the quick-release plate (3). When the button (5) is pressed, the button (5) drives the locking hook (6) to rotate around its rotation axis (7) against the force of the first elastic component (10) through the linkage assembly, so that the locking tongue (8) exits the locking groove (2) and unlocks the device.

2. The quick-release device for bags and suitcases according to claim 1, characterized in that: The locking hook (6) is a lever-type structure; The connecting rod assembly and the first elastic component (10) are both connected to the inner end of the locking hook (6), and the lever arm L1 from the inner end to the rotation axis (7) is smaller than the lever arm L2 from the locking tongue (8) to the rotation axis (7).

3. The quick-release device for bags and suitcases according to claim 1, characterized in that: The linkage assembly includes: The rotary paddle (11) is rotatably mounted inside the quick-release plate (3) and is driven to connect with the button (5); The connecting rod (12) is rotatably connected at both ends to the output end of the rotating paddle (11) and the inner end of the locking hook (6).

4. The quick-release device for bags and suitcases according to claim 3, characterized in that: The quick-release plate (3) and the rotating lever (11) are respectively provided with anti-theft lock holes (13); When the external locking rod passes through the anti-theft lock hole (13) of the quick-release plate (3) and the rotating paddle (11) at the same time, the rotation of the rotating paddle (11) is restricted, so that the device remains locked.

5. The quick-release device for bags and luggage according to any one of claims 1-4, characterized in that: The quick-release plate (3) has an internal movable cavity (15) and an opening (16) communicating with the movable cavity (15) on its side wall. The locking hook (6) is rotatably disposed in the movable cavity (15), and its locking tongue (8) can extend or retract from the opening (16). The end face of the hook (6) away from the rotation axis (7) is the first arc surface (81), and the wall surface of the movable cavity (15) opposite to the first arc surface (81) is the second arc surface (151). From the inside of the movable cavity (15) to the opening (16), the gap between the second arc surface (151) and the first arc surface (81) gradually narrows, forming a guide extrusion structure. When the latch (8) extends out of the opening (16) and is subjected to the force from the lock groove (2) and the first elastic member (10), the first arc surface (81) and the second arc surface (151) are in close contact along the guide extrusion structure.

6. The quick-release device for bags and suitcases according to claim 5, characterized in that: The quick-release plate (3) is U-shaped, with a U-shaped opening (18) formed inside. The opening (16) is located on the inner wall of the U-shaped opening (18); The base plate (1) is adapted to the shape of the U-shaped opening (18), and the locking groove (2) is opened on the side wall of the base plate (1) corresponding to the opening (16); In the locked state, the base plate (1) is embedded in the U-shaped opening (18) of the quick-release plate (3).

7. The quick-release device for bags and suitcases according to claim 6, characterized in that: The quick-release plate (3) slides along the base plate (1) through the U-shaped opening (18) to achieve assembly.

8. The quick-release device for bags and suitcases according to claim 7, characterized in that: The base plate (1) has a first inclined surface (19) at its edge, which gradually slopes downward from the outside to the inside; The inner wall of the U-shaped opening (18) is provided with a second inclined surface (20), which gradually slopes upward from the outside to the inside; When the base plate (1) is embedded in the U-shaped opening (18), the first inclined surface (19) and the second inclined surface (20) press against each other to achieve a limit in the thickness direction.

9. The quick-release device for bags and luggage according to claim 7 or 8, characterized in that: The outer end face of the latch (8) of the lock hook (6) is the first guide surface (21). The base plate (1) on the front side of the lock groove (2) is provided with a second guide surface (22); When the quick-release plate (3) slides along the base plate (1), the second guide surface (22) interacts with the first guide surface (21) to guide the locking tongue (8) into the locking groove (2).

10. The quick-release device for bags and suitcases according to claim 3, characterized in that: The handle (4) is fixedly provided with a guide post (23); The button (5) is slidably sleeved on the guide post (23); A second elastic component (24) is provided between the button (5) and the handle (4) for driving the button (5) to reset; The input end of the rotary paddle (11) is connected to the end of the button (5).

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