Multi-purpose locks

Abstract

The present invention relates to the field of locks and object connection mechanisms, and in particular, a multi-purpose lock. When the lock is in a locked state, one side of the limiting ball in the lock tongue of the present invention is constrained by the outer peripheral surface of the top ball shaft and cannot be retracted into the ball guide hole, and the other side forms a snap-fit ​​structure with the limiting ball slot on the side wall of the lock tongue connection hole, and the fork roller abuts against the slider seat of the top ball mechanism to prevent the top ball shaft from retreating. At this time, the limiting ball and the lock tongue can be combined to form an inverted structure. Even if it is suitable for push-pull (translation) sliding rail doors, the lock tongue can maintain a relatively locked state with the lock box, and can be applied to a variety of door scenarios. The inverted structure formed by the combination of the limiting ball and the lock tongue can also achieve a better locking effect than an ordinary linear lock tongue, and is particularly suitable for non-fixed double-opening doors or translation sliding rail doors.

Description

Technical Field

[0001] The present invention relates to the field of locks and the field of quick-connect objects, in particular to a multi-purpose lock. Background Art

[0002] Common doors on the market, such as sliding doors, rail doors, and loose double-opening fence doors, are usually locked with padlocks or chain locks. These locks are separated from the door and exposed to the outside, making them inconvenient to use, unreliable, and easily damaged, posing a major safety hazard.

[0003] Apart from the James hook, there are not many mechanisms that allow objects to quickly touch each other, stably connect, and quickly release the connection. Fence gate locks (similar mechanisms) just meet such requirements.

[0004] Except for padlocks, there are currently few concealed doors that can adapt to all types of doors such as sliding rail doors, swing doors, and non-fixed double doors. Taking the common door lock of a common swing door as an example, some electric control locks directly use a reduction motor to drive the lock tongue, which usually includes a lock body assembly, a lock tongue assembly and a lock striker box. The lock tongue assembly includes the lock tongue, and the lock body assembly includes a lock shell and a main rotating shaft (usually arranged in the form of a lock core (lock cylinder) and driven by a mechanical key or an electronic key); the right end of the lock shell is provided with a lock tongue through hole, and the left end of the lock striker box is provided with a lock tongue connecting hole. The main rotating shaft is arranged to rotate relative to the lock shell, and the axis of the main rotating shaft is arranged horizontally and extends along the front and rear direction of the lock shell. The main rotating shaft is equipped with an unlocking mechanism that drives it to rotate. The main rotating shaft and the lock tongue are connected by a transmission mechanism. The rotation of the main rotating shaft can drive the lock tongue to perform reciprocating linear motion along the axial direction of the lock tongue through hole. When the lock is in a locked state, the lock tongue extends out of the lock tongue through hole and is inserted into the lock tongue connecting hole. When the lock is in an unlocked state, the lock tongue retracts into the lock tongue through hole. When the lock is applied to a sliding door, since the movement direction of the sliding door is consistent with the movement direction of the lock tongue, a locked state cannot be formed between the lock tongue and the lock box, and the lock is naturally not applicable to the sliding door.

[0005] Although padlocks can be adapted to these types of scenarios, they are not very convenient to use, have poor aesthetics, and are not very durable. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multi-purpose lock that can adapt to various door scenarios and the field of quick connection of objects, and is easy to use and has high structural reliability.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a multi-purpose lock, including a lock body assembly, a lock tongue assembly and a lock box, the lock tongue assembly includes a lock tongue, the lock body assembly includes a lock shell and a main rotating shaft; the right end of the lock shell is provided with a lock tongue through hole, the left end of the lock box is provided with a lock tongue connecting hole, the main rotating shaft is rotatably arranged relative to the lock shell, the axis of the main rotating shaft is horizontally arranged and extends along the front and rear directions of the lock shell, the main rotating shaft is equipped with an unlocking mechanism that drives it to rotate, the main rotating shaft and the lock tongue are connected by a transmission mechanism, and the rotation of the main rotating shaft can drive the lock tongue to perform reciprocating linear motion along the axial direction of the lock tongue through hole. When the lock is in a locked state, the lock tongue extends out of the lock tongue through hole and is inserted into the lock tongue connecting hole. When the lock is in an unlocked state, the lock tongue retracts into the lock tongue through hole, and the lock tongue A ball-pushing mechanism sliding mounting groove is provided on one side facing the inner end of the lock tongue through-hole, and at least one ball guide hole is provided on the inner cavity side wall of the ball-pushing mechanism sliding mounting groove, and a limit ball is installed in the ball guide hole. Both ends of the ball guide hole are equipped with a limit structure for preventing the limit ball from falling from the ball guide hole, and a slidably arranged ball-pushing shaft is installed in the ball-pushing mechanism sliding mounting groove, and the inner end side wall of the ball-pushing shaft has a limit ball driving inclined surface matching the limit ball, and a return spring is installed between the inner end face of the ball-pushing shaft and the bottom of the ball-pushing mechanism sliding mounting groove, and the outer end of the ball-pushing shaft is fixedly provided with a ball-pushing mechanism slider seat, and the lock tongue is fixedly provided with a ball-pushing mechanism limit pin on the outer side of the ball-pushing mechanism sliding mounting groove, and the side wall of the lock tongue connecting hole has a limit ball clamping groove matching the limit ball.

[0008] The transmission mechanism between the main rotating shaft and the lock tongue includes a shift fork and a connecting rod. The shift fork is connected to the main rotating shaft and can rotate synchronously with the main rotating shaft. One end of the connecting rod is hinged to the shift fork and the other end is hinged to the lock tongue. A shift fork roller is installed on the shift fork. The outer peripheral surface of the shift fork roller forms a transmission fit with the outer surface of the slider seat of the ball-lifting mechanism. When the shift fork drives the lock tongue to move in the direction of inserting into the lock tongue connecting hole, the shift fork roller can simultaneously drive the ball-lifting shaft to move in the direction of inserting into the sliding mounting groove of the ball-lifting mechanism. When the shift fork drives the lock tongue to move in the direction of retracting the lock tongue through hole, the return spring drives the ball-lifting shaft to move in the direction close to the limit pin of the ball-lifting mechanism.

[0009] When the lock is in the locked state, one side of the limit ball is constrained by the outer circumferential surface of the top ball shaft and cannot be retracted into the ball guide hole, and the other side forms a locking structure with the limit ball groove on the side wall of the lock tongue connecting hole, and the fork roller abuts against the slider seat of the top ball mechanism to prevent the top ball shaft from retreating; when the lock is in the unlocked state, the outer end of the top ball shaft is limited by the limit pin of the top ball mechanism, and the limit ball is retracted into the ball guide hole.

[0010] Furthermore, the lock comprises a trigger mechanism assembly and a bracket assembly, the trigger mechanism assembly comprises a trigger mechanism slider and a trigger mechanism paddle, the trigger mechanism slider is slidably arranged relative to the lock shell, the right end of the lock shell is provided with a trigger mechanism through hole, the end of the trigger mechanism slider has a trigger mechanism driving head adapted to the trigger mechanism through hole, the trigger mechanism driving head has at least a first state extending outside the right end surface of the trigger mechanism through hole and a second state retracted into the trigger mechanism through hole, the trigger mechanism slider is equipped with a trigger mechanism spring, the reset elastic force of the trigger mechanism spring can enable the trigger mechanism driving head to switch from the second state to the first state; the trigger mechanism paddle is rotatably arranged on the trigger mechanism slider through a paddle shaft, the axis of the paddle shaft is horizontally arranged and extends along the front and rear direction of the lock shell, a paddle limiting pin is fixedly provided on the trigger mechanism slider, and a paddle torsion spring is provided between the trigger mechanism paddle and the paddle shaft, and the reset elastic force of the paddle torsion spring makes the trigger mechanism paddle have a tendency to rotate in a direction close to the paddle limiting pin.

[0011] The bracket assembly includes a bracket and a bracket slider. The bracket is fixed in the lock shell. The bracket slider is slidably installed on the bracket and can slide up and down relative to the lock shell. A slider foot spring is arranged between the bracket slider and the bracket. The reset elastic force of the slider foot spring makes the bracket slider have a tendency to slide downward relative to the lock shell; the bracket slider includes a bracket slider matching part B located at its upper end and a bracket slider matching part A located at its lower end; the spring force of the paddle torsion spring is less than the spring force of the slider foot spring.

[0012] The upper side surface of the inner end portion of the lock tongue is provided with a raised limit card, and the upper side of the inner end surface of the lock tongue is provided with an inclined push surface in a position adjacent to the limit card; when the lock tongue moves toward the direction of retracting the lock tongue through hole, the cooperation between the inclined push surface and the bracket slider matching part B can drive the bracket slider to move upward; when the lock tongue is fully retracted into the lock tongue through hole, the bracket slider can move downward through the slider foot spring and make the bracket slider matching part B engaged and fixed with the limit card. At the same time, the trigger mechanism driving head is in the first state, the trigger mechanism paddle is in contact with the paddle limiting pin, and the driving head of the trigger mechanism paddle is located in the right area of ​​the bracket slider matching part A; when the trigger mechanism driving head switches from the first state to the second state, the driving head of the trigger mechanism paddle and the bracket slider matching part A can drive the bracket slider to move upward and make the bracket slider matching part B disengage from the limit card.

[0013] A shift fork reset torsion spring is sleeved on the main rotating shaft, one end of the shift fork reset torsion spring abuts against a fixed component in the lock housing, and the other end abuts against a fixed component on the shift fork. The reset elastic force of the shift fork reset torsion spring makes the shift fork have a tendency to drive the lock tongue to move in the direction of inserting into the lock tongue connecting hole.

[0014] Furthermore, the shift fork is provided with a shift fork limiting edge, a shift fork connecting rod connecting hole for connecting the connecting rod and a shift fork transmission hole for connecting the main rotating shaft, the shift fork roller is provided at one end in the direction of the shift fork axis, the shift fork transmission hole is provided at the other end in the direction of the shift fork axis, the shift fork connecting rod connecting hole is provided in the area between the shift fork transmission hole and the shift fork roller, the slider seat of the ball mechanism is provided with a shift fork roller limiting arc groove adapted to the shift fork roller, and a bracket limiting block is fixedly provided on the bracket. When the lock is in the locked state, the reset elastic force of the shift fork reset torsion spring causes the shift fork limit edge of the shift fork to abut against the bracket limit block, and the shift fork roller is engaged with the shift fork roller limit arc groove. At the same time, with the radial section of the main shaft as the projection reference surface, the center point of the shift fork transmission hole is set as point X, the center point of the shift fork connecting rod connecting hole is set as point O, and the center point of the hinge axis between the connecting rod and the lock tongue is set as point Y. The angle ∠XOY formed by point X, point O and point Y is an obtuse angle.

[0015] Furthermore, a bracket rectangular hole is provided on the bracket, a bracket slider matching part B is inserted into the bracket rectangular hole in the horizontal direction, a bracket limiting block is fixedly provided on the bracket, a bracket slider groove is provided on the bracket limiting block, and a bracket slider matching part A is inserted into the bracket slider groove in the vertical direction. The bracket slider is slidably installed on the bracket through the matching of the bracket slider matching part B with the bracket rectangular hole and the matching of the bracket slider matching part A with the bracket slider groove.

[0016] Furthermore, a slider spring baffle is fixedly provided on the bracket, a spring limiting shaft is fixedly installed on the slider spring baffle, the slider spring is sleeved on the spring limiting shaft, one end of the slider spring is connected to the slider spring baffle, and the other end is connected to the bracket slider; a trigger mechanism spring limiting baffle is fixedly provided on the bracket, a trigger mechanism spring central axis is fixedly installed on the trigger mechanism spring limiting baffle, a trigger mechanism spring limiting block is fixedly provided on the trigger mechanism slider, the trigger mechanism spring limiting block forms a sliding fit with the trigger mechanism spring central axis through a trigger mechanism guide hole provided thereon, the trigger mechanism spring is sleeved on the trigger mechanism spring central axis, one end of the trigger mechanism spring is connected to the trigger mechanism spring limiting baffle, and the other end is connected to the trigger mechanism spring limiting block.

[0017] Furthermore, the lock includes a top and bottom rod, and the lock shell is provided with a top and bottom rod through-hole compatible with the top and bottom rod. The top and bottom rod can move vertically up and down relative to the lock shell. The top and bottom rod has a top and bottom rod A axis and a top and bottom rod B axis extending along the front and rear directions of the lock shell. The top and bottom rod A axis and the top and bottom rod B axis are arranged relative to each other. The bracket is provided with a bracket bar slide groove, and the length direction of the bracket bar slide groove is arranged vertically. The lock tongue assembly includes a top and bottom rod connecting plate fixedly provided at the inner end of the lock tongue, and the top and bottom rod connecting plate is provided with a lock tongue bottom plate slide groove. The top and bottom rod A axis is inserted into the bracket bar slide groove and forms a sliding fit, and the top and bottom rod B axis is inserted into the lock tongue bottom plate slide groove and forms a sliding fit. The extension direction of the lock tongue bottom plate slide groove meets the following requirements: when the lock tongue moves toward the direction of inserting the lock tongue connecting hole, the top and bottom rod extends outward relative to the inner cavity of the lock shell, and when the lock tongue moves toward the direction of retracting the lock tongue through-hole, the top and bottom rod retracts inward relative to the inner cavity of the lock shell.

[0018] Furthermore, the outer end of the trigger mechanism driving head is a spherical structure, an inclined surface structure or a truncated cone structure.

[0019] Furthermore, the lock tongue is composed of two pieces arranged in parallel, and each lock tongue is provided with two limiting balls arranged opposite to each other.

[0020] Furthermore, a return spring mounting groove is provided on the inner end face of the ball-lifting shaft, and the return spring is installed in the return spring mounting groove. The end of the return spring away from the bottom of the return spring mounting groove is connected to a return pin. One end of the return pin is inserted into the return spring mounting groove and forms a sliding fit, and the other end abuts against the bottom of the sliding mounting groove of the ball-lifting mechanism.

[0021] Furthermore, the unlocking mechanism is an electronically controlled mechanism, and a manual knob mechanism is installed on the main shaft. The manual knob mechanism includes a knob, a knob slider, a vortex spring and a transmission wheel. The knob is fixedly installed on one end of the main shaft extending outside the lock housing. The main shaft has a middle through hole extending axially, and a shaft slider core shaft is slidably installed in the middle through hole of the shaft. The shaft slider core shaft is fixedly provided with a shaft slider core shaft drive head at one end close to the knob, and a shaft slider is fixedly provided at the other end of the shaft slider core shaft.

[0022] A knob radial groove is provided on the outer wall of the knob, and a knob slider is slidably installed in the knob radial groove. The inner end of the knob slider is combined with the core shaft driving head of the shaft slider to form an oblique wedge mechanism. When the knob slider moves toward the center of the knob, the knob slider drives the core shaft driving head of the shaft slider to move toward the direction close to the knob; the knob slider is equipped with a first knob slider spring, and the return elastic force of the first knob slider spring makes the knob slider have a tendency to move along the knob radial groove toward away from the center of the knob; the side wall of the knob slider is equipped with a knob slider limit pin, and the side wall of the knob radial groove has a knob slider limit groove adapted to the knob slider limit pin.

[0023] The inner wall of the middle through hole of the rotating shaft is provided with a step surface in the middle area, and a rotating shaft slider spring is installed between the step surface and the end face of the rotating shaft slider. The return elastic force of the rotating shaft slider spring makes the rotating shaft slider tend to move away from the knob.

[0024] The transmission wheel is sleeved on the main rotating shaft through the central through hole of the transmission wheel. The transmission wheel is installed in the area of ​​the main rotating shaft where the shaft slider is set. The locking mechanism is connected to the transmission wheel to drive the transmission wheel to rotate. The inner side wall of the central through hole of the transmission wheel is provided with a transmission wheel arc-shaped limiting groove extending along its circumference. The side wall of the main rotating shaft is fixed with a shaft limiting pin that is adapted to the transmission wheel arc-shaped limiting groove. The shaft limiting pin is inserted in the transmission wheel arc-shaped limiting groove to form a sliding fit.

[0025] The inner side wall of the central through hole of the transmission wheel is provided with a transmission wheel groove extending radially thereof, and a transmission wheel slider is slidably installed in the transmission wheel groove. The transmission wheel slider is equipped with a transmission wheel slider spring. The reset elastic force of the transmission wheel slider spring makes the transmission wheel slider A tend to move along the transmission wheel groove toward the center of the transmission wheel.

[0026] The outer wall of the main shaft is provided with a shaft slider bar groove that is compatible with the shaft slider. The outer end surface of the shaft slider is flush with the outer wall of the main shaft. The outer end surface of the shaft slider is provided with a clutch groove. One side wall of the clutch groove is combined with the transmission wheel slider to form an oblique wedge mechanism. When the shaft slider moves in the direction close to the knob, the clutch groove of the shaft slider can drive the transmission wheel slider to move away from the center of the transmission wheel, and can make the transmission wheel slider disengage from the shaft slider bar groove. At this time, when the main shaft rotates in the unlocking direction, the main shaft cannot be linked with the transmission wheel, and the main shaft can only be driven to rotate by the knob to achieve manual unlocking.

[0027] The vortex spring is sleeved on the main rotating shaft, one end of the vortex spring is fixed on the fixed component in the lock housing, and the other end is fixed on the main rotating shaft; the reset elastic force of the vortex spring makes the main rotating shaft have the tendency to drive the lock tongue to move in the direction of inserting the lock tongue connecting hole, and at the same time makes the rotating shaft limit pin abut against one side of the arc-shaped limit groove of the transmission wheel. At this time, the transmission wheel slider is aligned with the strip slide groove of the rotating shaft slider.

[0028] When the first spring of the knob slider, the shaft slider spring, the vortex spring and the transmission wheel slider spring are all in a natural state, the transmission wheel slider is inserted into the clutch groove on the shaft slider. At this time, the main shaft and the transmission wheel can rotate synchronously, and the unlocking mechanism is used to realize unlocking.

[0029] The beneficial effects of the present invention are as follows: when the lock is in the locked state, one side of the limiting ball is constrained by the outer peripheral surface of the top ball shaft and cannot retract into the ball guide hole, while the other side forms a locking structure with the limiting ball slot on the side wall of the lock tongue connection hole, and the fork roller abuts against the slider seat of the top ball mechanism to prevent the top ball shaft from retreating. At this time, the limiting ball and the lock tongue can be combined to form an inverted buckle structure. Even if it is suitable for a sliding rail door, the lock tongue can maintain a relatively locked state with the lock box, which can be applied to various door scenarios and the field of quick connection of objects. The inverted buckle structure formed by the combination of the limiting ball and the lock tongue can also achieve a better locking effect than an ordinary linear lock tongue, and is particularly suitable for non-fixed double-opening doors or doors with relatively rough installation precision. Conventional locks may be directly destroyed when a gap is formed between the lock tongue and the lock box when the gap between the top and bottom rods is large or when a frontal impact is applied. However, the combination of the limiting ball and the lock tongue of the present invention forms an inverted buckle structure. Even if the top and bottom rods are damaged or the door leaf is impacted to produce a certain gap, as long as the screws or welds fixing the lock and the door leaf do not fail, the door cannot be opened, which is more reliable. In addition, the present invention is preferably provided with a trigger mechanism assembly. When the trigger mechanism driving head is squeezed by the lock box and retracted into the lock shell, the trigger mechanism assembly can realize the function of automatic locking. The outer end of the trigger mechanism driving head is a spherical structure, an inclined structure or a frustum structure. It can be triggered vertically (the door is installed for rotation) or in parallel (the door is installed for translation and sliding). It is also applicable to various door types. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic exploded view of the overall structure of an embodiment of the present invention.

[0031] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the shift fork of the embodiment shown.

[0032] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the bracket assembly of the illustrated embodiment.

[0033] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the internal structure of the unlocking mechanism of the illustrated embodiment.

[0034] Figure 5 yes Figure 4 A three-dimensional schematic diagram of the external structure of the unlocking mechanism of the illustrated embodiment.

[0035] Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of the lock body assembly of the illustrated embodiment.

[0036] Figure 7 yes Figure 1 Schematic diagram of the explosion structure of the trigger mechanism assembly of the illustrated embodiment.

[0037] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the trigger mechanism assembly and the bracket assembly of the illustrated embodiment.

[0038] Figure 9 yes Figure 1 Schematic diagram of the exploded structure of the ball-lifting mechanism of the embodiment shown.

[0039] Figure 10 yes Figure 1 Schematic diagram of the exploded structure of the slider assembly of the illustrated embodiment.

[0040] Figure 11 yes Figure 1 A three-dimensional schematic diagram of the transmission structure between the unlocking mechanism and the slider assembly involved in the embodiment shown.

[0041] Figure 12 yes Figure 1 The illustrated embodiment is a two-dimensional schematic diagram of the transmission structure between the unlocking mechanism and the slider assembly.

[0042] Figure 13 yes Figure 1 Schematic diagram of the three-dimensional structure of the lock box of the embodiment shown.

[0043] Figure 14 yes Figure 1 The illustrated embodiment is a schematic diagram of the exploded structure of the main components involved.

[0044] Figure 15 yes Figure 1 Schematic diagram of the installation structure of the trigger mechanism assembly involved in the embodiment shown.

[0045] Figure 16 yes Figure 1 The illustrated embodiment is a three-dimensional schematic diagram of the mounting structure of the trigger mechanism assembly from another perspective.

[0046] Figure 17 yes Figure 1 The illustrated embodiment is a three-dimensional schematic diagram of the mounting structure of the trigger mechanism assembly from another perspective.

[0047] Figure 18 yes Figures 1-17 Schematic diagram of the transmission mechanism between the main shaft and the lock tongue involved in the embodiment shown.

[0048] Figure 19 yes Figures 1-17 Schematic diagram of the transmission mechanism between the main shaft and the ball-lifting mechanism involved in the illustrated embodiment.

[0049] Figure 20 yes Figures 1-17Schematic diagram of the sky and earth pole installation structure involved in the embodiment shown.

[0050] Figure 21 yes Figures 1-17 The illustrated embodiment is a schematic structural diagram of the locking tongue assembly during the retraction process.

[0051] Figure 22 yes Figures 1-17 The illustrated embodiment is a schematic structural diagram of the lock tongue assembly during the locking process.

[0052] Figure 23 yes Figures 1-17 The illustrated embodiment is a schematic structural diagram of the shift fork and its transmission mechanism in a locked state.

[0053] Figure 24 yes Figures 1-17 The illustrated embodiment is a partially enlarged schematic diagram of the trigger mechanism assembly after installation.

[0054] Figure 25 yes Figures 1-17 The illustrated embodiment is a schematic diagram of the trigger mechanism assembly during the unlocking process.

[0055] Figure 26 yes Figures 1-17 The illustrated embodiment is a schematic diagram of the trigger mechanism assembly after unlocking.

[0056] Figure 27 yes Figures 1-17 The illustrated embodiment is a schematic diagram of the trigger mechanism assembly in a state after the trigger mechanism drive head is squeezed by an external force.

[0057] Figure 28 yes Figures 1-17 The illustrated embodiment is a schematic diagram of the trigger mechanism assembly after the trigger mechanism drive head is fully retracted.

[0058] Figure 29 yes Figures 1-17 The illustrated embodiment is a schematic diagram of the trigger mechanism assembly after the trigger mechanism drive head is automatically reset.

[0059] Figure 30 yes Figures 1-17 The illustrated embodiment is a schematic structural diagram of the trigger mechanism assembly in the locked state of the lock.

[0060] Figure 31 This is a schematic diagram of the external structure of the lock body assembly after a manual knob mechanism is added in another embodiment of the present invention.

[0061] Figure 32 yes Figure 31 Schematic diagram of the transmission structure of the manual knob mechanism involved in the embodiment shown.

[0062] Figure 33 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure of the manual knob mechanism from another perspective.

[0063] Figure 34 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure of the manual knob mechanism from another perspective.

[0064] Figure 35 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure of the manual knob mechanism from another perspective.

[0065] Figure 36 yes Figure 31 Schematic diagram of the arrangement structure of the shaft limit pins in the manual knob mechanism involved in the illustrated embodiment.

[0066] Figure 37 yes Figure 31 The illustrated embodiment is a schematic diagram of the arrangement structure of the shaft limit pins of the manual knob mechanism when the vortex spring is in the natural state.

[0067] Figure 38 yes Figure 31 The illustrated embodiment is a schematic diagram of the installation of components such as the transmission wheel slider, transmission wheel slider spring, etc. in the manual knob mechanism.

[0068] Figure 39 yes Figure 31 The illustrated embodiment is a schematic diagram of the installation of components such as the vortex spring, transmission wheel slider, and transmission wheel slider spring in the manual knob mechanism.

[0069] Figure 40 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure between the knob slider and the shaft slider in the manual knob mechanism.

[0070] Figure 41 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure between the rotating shaft slider and the transmission wheel slider in the manual knob mechanism.

[0071] Figure 42 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure of the rotating shaft slider in the manual knob mechanism when it moves toward the knob.

[0072] Figure 43 yes Figure 31 The illustrated embodiment is a schematic diagram of the transmission structure of the rotating shaft slider in the manual knob mechanism when it moves away from the knob.

[0073] Figure 44It is a schematic diagram of the inner structure of a door in an unlocked state when the present invention is applied to a single-door.

[0074] Figure 45 It is a schematic diagram of the inner structure of a double door in a locked state when the present invention is applied to the double door.

[0075] Figure 46 It is a schematic diagram of the inner structure of a double door in an unlocked state when the present invention is applied to the double door.

[0076] Figure 47 It is a schematic diagram of the outer structure of a double door in an unlocked state when the present invention is applied to the double door.

[0077] Figure 48 It is a schematic diagram of the inner structure of a double door in another unlocking state when the present invention is applied to the double door.

[0078] Figure 49 It is a schematic diagram of the inner structure of a sliding door in an unlocked state when the present invention is applied to the sliding door.

[0079] Figure 50 It is a schematic diagram of the inner structure of a sliding door in a locked state when the present invention is applied to the sliding door.

[0080] Figure 51 It is a structural schematic diagram of the present invention in an unlocked state when applied to the quick connection of two objects.

[0081] Figure 52 It is a structural schematic diagram of the present invention in a locked state when applied to two objects for quick connection.

[0082] The parts markings in the figure are as shown in the following table:

[0083]

[0084] DETAILED DESCRIPTION

[0085] The present invention will be further described below with reference to the accompanying drawings.

[0086] It should be noted in advance that the relative positions of the various components of the lock may vary depending on the application scenario and installation method of the lock. The limitations on the upper, lower, left, and right positions in the present invention are only for the convenience of understanding the technical solution in conjunction with the accompanying drawings.

[0087] like Figures 1 to 30As shown, the present invention includes a lock body assembly 4, a lock tongue assembly 705 and a lock box 8, the lock tongue assembly 705 includes a lock tongue 705-D, the lock body assembly 4 includes a lock shell 403 and a main shaft 401; the right end of the lock shell 403 is provided with a lock tongue through hole 403-A, the left end of the lock box 8 is provided with a lock tongue connecting hole 801, the main shaft 401 is rotatably arranged relative to the lock shell 403, the axis of the main shaft 401 is horizontally arranged and extends along the front and rear direction of the lock shell 403, the main shaft 401 is equipped with a unlocking mechanism 3 for driving it to rotate, the main shaft 401 and the lock tongue 705-D are connected by a transmission mechanism, and the rotation of the main shaft 401 can drive the lock tongue 705-D to rotate. -D makes reciprocating linear motion along the axial direction of the lock tongue through hole 403-A. When the lock is in the locked state, the lock tongue 705-D extends out of the lock tongue through hole 403-A and is inserted into the lock tongue connecting hole 801. When the lock is in the unlocked state, the lock tongue 705-D retracts into the lock tongue through hole 403-A. A ball-pushing mechanism sliding mounting groove 706 is provided on the side of the lock tongue 705-D facing the inner end of the lock tongue through hole 403-A. The inner cavity side wall of the ball-pushing mechanism sliding mounting groove 706 is provided with at least one ball guide hole. A limiting ball 703 is installed in the ball guide hole. Both ends of the ball guide hole are equipped with limiting structures for preventing the limiting ball 703 from falling out of the ball guide hole.

[0088] It should be noted that the "limiting ball 703" in the present invention should be understood in a broad sense. It can be a sphere or a pin with a spherical end, and can generally be in the form of a steel ball. The limiting structure used to prevent the limiting ball 703 from falling out of the ball guide hole can be a flange provided on the end face of the ball guide hole, or it can be implemented by additional parts. To facilitate assembly, the present invention provides a limiting washer 702 at the outer end of the ball guide hole to limit the limiting ball 703 from falling; and at the inner end of the ball guide hole, the limiting is achieved by the outer cylindrical surface of the small diameter end of the top ball shaft 602. The small diameter end refers to the part with a diameter smaller than the diameter of the top ball shaft 602 body, and is arranged adjacent to the limiting ball drive inclined surface on the top ball shaft 602.

[0089] The locking tongue 705-D can be a single or multiple locking tongues. Each locking tongue 705-D can be equipped with one or more limiting balls 703. The number and arrangement of the ball guide holes can be designed based on the arrangement of the limiting balls 703. To ensure a more reliable locking structure, the present invention adopts a double locking tongue design, that is, the locking tongues 705-D are arranged in parallel, and each locking tongue 705-D is equipped with two limiting balls 703 arranged in an opposing manner. The limiting balls 703 are respectively located on either side of the sliding mounting groove 706 of the ball-lifting mechanism.

[0090] A ball-lifting mechanism sliding groove 706 includes a sliding ball-lifting shaft 602. The inner sidewall of the ball-lifting shaft 602 has a ball-lifting driving inclined surface that mates with the ball-lifting mechanism 703. A return spring 603 is installed between the inner end surface of the ball-lifting shaft 602 and the bottom of the ball-lifting mechanism sliding groove 706. A ball-lifting mechanism slider seat 601 is fixedly mounted on the outer end of the ball-lifting shaft 602. A ball-lifting mechanism limiting pin 704 is fixedly mounted on the outer side of the ball-lifting mechanism sliding groove 706 on the locking tongue 705-D. The sidewall of the locking tongue connecting hole 801 includes a ball-lifting mechanism retaining groove that mates with the ball-lifting mechanism 703. The ball-lifting mechanism retaining groove is preferably provided by a spacer.

[0091] The transmission mechanism between the main shaft 401 and the lock tongue 705-D includes a shift fork 1 and a connecting rod 701. The shift fork 1 is connected to the main shaft 401 and can rotate synchronously with the main shaft 401. One end of the connecting rod 701 is hinged to the shift fork 1 and the other end is hinged to the lock tongue 705-D. A shift fork roller 103 is installed on the shift fork 1. The outer peripheral surface of the shift fork roller 103 forms a transmission match with the outer surface of the slider seat 601 of the ball mechanism. When the shift fork 1 drives the lock tongue When 705-D moves toward the direction of inserting into the lock tongue connecting hole 801 (that is, the lock tongue 705-D extends out of the lock shell 403), the fork roller 103 can simultaneously drive the top ball shaft 602 to move toward the direction of inserting into the sliding mounting groove 706 of the top ball mechanism. When the fork 1 drives the lock tongue 705-D to move toward the direction of retracting the lock tongue through hole 403-A, the return spring 603 drives the top ball shaft 602 to move toward the direction close to the top ball mechanism limit pin 704.

[0092] When the lock is in the locked state, one side of the limiting ball 703 is constrained by the outer peripheral surface of the top ball shaft 602 and cannot be retracted into the ball guide hole, and the other side forms a locking structure with the limiting ball groove on the side wall of the lock tongue connecting hole 801, and the fork roller 103 abuts against the top ball mechanism slider seat 601 to prevent the top ball shaft 602 from retreating; when the lock is in the unlocked state, the outer end of the top ball shaft 602 is limited by the top ball mechanism limit pin 704, and at this time the limiting ball 703 retracts into the ball guide hole.

[0093] In the above solution, the unlocking mechanism 3 can be an electronically controlled mechanism or a manual mechanism, and a mechanical key is used to control the opening and closing of the lock. The unlocking mechanism 3 can drive the main shaft 401 to rotate clockwise or counterclockwise.

[0094] In the embodiment shown in the accompanying drawings, the main shaft 401 rotates counterclockwise, and the shift fork 1 rotates synchronously. When the shift fork 1 drives the lock tongue 705-D to move toward the lock tongue connection hole 801 (i.e., the lock tongue 705-D extends out of the lock shell 403), the shift fork roller 103 simultaneously drives the top ball shaft 602 to move toward the direction of inserting the top ball mechanism sliding installation groove 706. The limiting ball driving inclined surface on the top ball shaft 602 synchronously drives the limiting ball 703 toward the outer end of the ball guide hole, ultimately causing the lock to enter a locked state. The limiting ball 703 and the lock tongue 705-D can be combined to form an inverted buckle structure. Even if it is suitable for sliding rail doors, the lock tongue assembly can maintain a relatively locked state with the lock box 8, which is applicable to various door types and object connection mechanisms. The inverted structure formed by the combination of the limiting ball 703 and the lock tongue 705-D can achieve a better locking effect than the ordinary straight lock tongue. When the gap between the top and bottom rods of conventional locks is large or they are subjected to a frontal impact, once a gap is generated between the lock tongue 705-D and the lock box 8, they may be directly destroyed. However, the limiting ball 703 and the lock tongue 705-D of the present invention are combined to form an inverted structure. Even if the top and bottom rods are damaged or the door leaf is impacted to produce a certain gap, as long as the screws or welding points that fix the lock and the door leaf do not fail, the door cannot be opened, and the reliability is higher.

[0095] When unlocking is required, the main shaft 401 can be rotated clockwise, driving the shift fork 1 to rotate clockwise, and then driving the lock tongue assembly 705 to retreat into the lock shell 403, the shift fork roller 103 disengages from the top ball mechanism slider seat 601, and the top ball mechanism 6 is pushed back synchronously by the retraction spring 603. During the retraction process, the limiting ball 703 is restricted by the lock tongue through hole 801 and gradually retracts toward the radial center of the top ball shaft 602 until it is completely retracted into the ball guide hole of the lock tongue 705-D. The top ball mechanism 6 is pushed by the retraction spring 603 until the top ball mechanism 6 retreats to contact with the top ball mechanism limit pin 704, thereby achieving unlocking.

[0096] In order to make the lock more convenient to use, the present invention is designed with an automatic trigger mechanism to achieve automatic locking. The specific structure is as follows: the lock includes a trigger mechanism component 5 and a bracket component 2. The trigger mechanism component 5 includes a trigger mechanism slider 504 and a trigger mechanism paddle 503. The trigger mechanism slider 504 is slidably arranged relative to the lock shell 403. The right end of the lock shell 403 is provided with a trigger mechanism through hole 403-B. The end of the trigger mechanism slider 504 has a trigger mechanism driving head 504-B that is adapted to the trigger mechanism through hole 403-B. The trigger mechanism driving head 504-B has at least a first state extending out of the right end surface of the trigger mechanism through hole 403-B and a second state retracted into the trigger mechanism through hole 403-B. The trigger mechanism slider 504 is equipped with a trigger mechanism spring 205. The return force of the trigger mechanism spring 205 causes the trigger mechanism driving head 504-B to switch from the second state to the first state. The trigger mechanism paddle 503 is rotatably mounted on the trigger mechanism slider 504 via a paddle shaft 504-C. The axis of the paddle shaft 504-C is horizontally arranged and extends along the front-to-back direction of the lock case 403. A paddle retaining pin 504-A is fixedly mounted on the trigger mechanism slider 504. A paddle torsion spring 502 is disposed between the trigger mechanism paddle 503 and the paddle shaft 504-C. The return force of the paddle torsion spring 502 causes the trigger mechanism paddle 503 to rotate toward the paddle retaining pin 504-A. During installation, the trigger mechanism paddle 503 can generally be directly mounted on the paddle shaft 504-C and then axially retained by the head of the paddle connecting screw 501.

[0097] The bracket assembly 2 includes a bracket 204 and a bracket slider 203. The bracket 204 is fixed in the lock shell 403. The bracket slider 203 is slidably installed on the bracket 204 and can slide up and down relative to the lock shell 403. A slider foot spring 201 is arranged between the bracket slider 203 and the bracket 204. The reset elastic force of the slider foot spring 201 makes the bracket slider 203 have a tendency to slide downward relative to the lock shell 403; the bracket slider 203 includes a bracket slider matching part B203-B located at its upper end and a bracket slider matching part A203-A located at its lower end; the spring force of the paddle torsion spring 502 is less than the spring force of the slider foot spring 201.

[0098] The upper side surface of the inner end portion of the lock tongue 705-D has a protruding limit card 705-E, and the upper side surface of the inner end surface of the lock tongue 705-D is provided with an inclined push surface 705-F at a position adjacent to the limit card 705-E; when the lock tongue 705-D moves toward the direction of retracting the lock tongue through hole 403-A, the inclined push surface 705-F cooperates with the bracket slider matching part B203-B to drive the bracket slider 203 to move upward; when the lock tongue 705-D is fully retracted into the lock tongue through hole 403-A, the bracket slider 203 can move downward through the slider foot spring 201 and make the bracket slider matching part B203- B is fixedly engaged with the limit card 705-E. At the same time, the trigger mechanism driving head 504-B is in the first state, the trigger mechanism paddle 503 is in contact with the paddle limiting pin 504-A, and the driving head of the trigger mechanism paddle 503 is located in the right area of ​​the bracket slider matching part A203-A; when the trigger mechanism driving head 504-B switches from the first state to the second state, the driving head of the trigger mechanism paddle 503 cooperates with the bracket slider matching part A203-A to drive the bracket slider 203 to move upward and make the bracket slider matching part B203-B disengage from the limit card 705-E.

[0099] A shift fork reset torsion spring 9 is sleeved on the main rotating shaft 401, one end of the shift fork reset torsion spring 9 is in contact with a fixed component in the lock shell 403 (in this embodiment, the fixed component is the fixed outer shell of the unlocking mechanism 3), and the other end is in contact with a fixed component on the shift fork 1. The reset elastic force of the shift fork reset torsion spring 9 makes the shift fork 1 have a tendency to drive the lock tongue 705-D to move in the direction of inserting into the lock tongue connecting hole 801.

[0100] The automatic trigger mechanism operates as follows: When unlocking, the lock tongue 705-D retracts into the lock housing 403, and the inclined push surface 705-F drives the bracket slider 203 upward until the bracket slider 203 aligns with the position of the limit card 705-E. The slider extension spring 201 pushes the bracket slider 203 downward to engage the limit card 705-E. At this point, the lock tongue 705-D remains retracted and cannot be ejected. The trigger mechanism spring 205 pushes the trigger mechanism slider 504, and the trigger mechanism drive head 504-B fully ejects, preparing for the next automatic locking of the lock. Specifically, because the elastic force of the paddle torsion spring 502 is less than that of the slider extension spring 201, the trigger mechanism paddle 503, when blocked by the bracket slider 203, can rotate counterclockwise about the paddle axis 504-C, and the trigger mechanism slider 504 is ejected to the right by the trigger mechanism spring 205.

[0101] When the door is closed, the trigger mechanism drive head 504-B is squeezed by the lock box 801. As the trigger mechanism drive head 504-B is pressed into the lock housing 403 by external force, the trigger mechanism paddle 503 pushes the bracket slider 203 upward until it disengages from the limit stop 705-E, releasing the lock. The lock bolt assembly 705 is then automatically ejected under the return force of the shift fork return torsion spring 9, thus achieving automatic locking of the lock. After the door is closed, the internal mechanism automatically forms a dead point, preventing the lock bolt 705-D from being pushed back into the lock body by external force, eliminating the need for reverse locking and facilitating use.

[0102] For better adaptability, the outer end of the trigger mechanism driving head 504-B is preferably spherical, inclined, or truncated cone. This allows for vertical triggering (for rotating doors) as well as parallel triggering (for sliding doors), making it suitable for various door and object connection scenarios.

[0103] In order to make the locking state more stable and reliable, the shift fork 1 is provided with a shift fork limiting edge 104, a shift fork connecting rod connecting hole 102 for connecting the connecting rod 701 and a shift fork transmission hole 101 for connecting the main shaft 401, the shift fork roller 103 is provided at one end of the shift fork 1 in the axial direction, the shift fork transmission hole 101 is provided at the other end of the shift fork 1 in the axial direction, the shift fork connecting rod connecting hole 102 is provided in the area between the shift fork transmission hole 101 and the shift fork roller 103, the ball mechanism slider seat 601 is provided with a shift fork roller limiting arc groove adapted to the shift fork roller 103, and a bracket limiting block 204-B is fixedly provided on the bracket 204. When the lock is in the locked state, the axis of the shift fork 1 is set horizontally, and the reset elastic force of the shift fork reset torsion spring 9 makes the shift fork limiting edge 104 of the shift fork 1 abut against the bracket limiting block 204-B. The shift fork limiting edge 104 is arranged horizontally at this time, and the shift fork roller 103 is engaged with the shift fork roller limiting arc groove. At the same time, with the radial section of the main shaft 401 as the projection reference surface, the center point of the shift fork transmission hole 101 is set as point X, the center point of the shift fork connecting rod connecting hole 102 is set as point O, and the center point of the hinge axis between the connecting rod 701 and the lock tongue 705-D is set as point Y. The angle ∠XOY formed by point X, point O and point Y is an obtuse angle (the angle is Figure 23 This mating state can prevent the lock tongue assembly 705 or the top and bottom rod 402 from being forcibly pushed into the lock housing 403 to unlock the lock.

[0104] In order to make the structure simple and reliable, a bracket rectangular hole 204-A is provided on the bracket 204, and the bracket slider matching part B203-B is inserted into the bracket rectangular hole 204-A in the horizontal direction. A bracket limiting block 204-B is fixedly provided on the bracket 204, and a bracket slider groove 204-H is provided on the bracket limiting block 204-B. The bracket slider matching part A203-A is inserted into the bracket slider groove 204-H in the vertical direction. The bracket slider 203 is slidably installed on the bracket 204 through the matching of the bracket slider matching part B203-B and the bracket rectangular hole 204-A and the matching of the bracket slider matching part A203-A and the bracket slider groove 204-H.

[0105] In order to make the structure simple and reliable, a slider foot spring baffle 204-F is fixedly provided on the bracket 204, a spring limiting shaft 202 is fixedly installed on the slider foot spring baffle 204-F, a slider foot spring 201 is sleeved on the spring limiting shaft 202, one end of the slider foot spring 201 is connected to the slider foot spring baffle 204-F, and the other end is connected to the bracket slider 203; a trigger mechanism spring limiting baffle 204-M is fixedly provided on the bracket 204, and the trigger mechanism spring limiting baffle 204-M is fixedly provided on the bracket 204. The trigger mechanism spring center axis 206 is fixedly installed, and the trigger mechanism spring limit block 504-D ​​is fixedly provided on the trigger mechanism slider 504. The trigger mechanism spring limit block 504-D ​​forms a sliding fit with the trigger mechanism spring center axis 206 through the trigger mechanism guide hole provided thereon. The trigger mechanism spring 205 is sleeved on the trigger mechanism spring center axis 206. One end of the trigger mechanism spring 205 is connected to the trigger mechanism spring limit baffle 204-M, and the other end is connected to the trigger mechanism spring limit block 504-D.

[0106] In order to make the locking structure more reliable, the lock includes a top and bottom rod 402, and a top and bottom rod through hole adapted to the top and bottom rod 402 is provided on the lock shell 403. The top and bottom rod 402 can move vertically up and down relative to the lock shell 403. The top and bottom rod 402 has a top and bottom rod A axis 402-A and a top and bottom rod B axis 402-B extending along the front and back directions of the lock shell 403. The top and bottom rod A axis 402-A and the top and bottom rod B axis 402-B are arranged relative to each other (i.e., they are arranged on both sides of the top and bottom rod 402). A bracket strip slide 204-G is provided on the bracket 204, and the length direction of the bracket strip slide 204-G is arranged vertically. The lock tongue assembly 705 includes a bracket strip slide 204-G fixedly provided on the lock tongue. The inner end of the top and bottom rod connecting plate 705-D is provided with a lock tongue base plate slot 705-A. The top and bottom rod A axis 402-A is inserted into the bracket strip slot 204-G, forming a sliding fit. The top and bottom rod B axis 402-B is inserted into the lock tongue base plate slot 705-A, forming a sliding fit. The extension direction of the lock tongue base plate slot 705-A meets the following requirements: when the lock tongue 705-D moves toward the lock tongue connecting hole 801, the top and bottom rod 402 extends outward relative to the interior of the lock housing 403. When the lock tongue 705-D moves toward the lock tongue through hole 403-A, the top and bottom rod 402 retracts inward relative to the interior of the lock housing 403. The lock tongue base plate slot 705-A can be an inclined straight line or a smooth, continuous curve, as long as it meets the movement trend of the top and bottom rod 402 and does not interfere with it.

[0107] The "height rod 402" herein should be understood in a broad sense, and may be either only the height rod or only the ground rod. Preferably, both the height rod and the ground rod are arranged simultaneously. With the above structure, the height rod 402 can be controlled in conjunction with the bolt assembly 705 to retract or extend synchronously.

[0108] In order to make the structure simple and reliable, a retraction spring mounting groove is provided on the inner end face of the ball bearing shaft 602, and the retraction spring 603 is installed in the retraction spring mounting groove. The end of the retraction spring 603 away from the bottom of the retraction spring mounting groove is connected to the retraction pin 604. One end of the retraction pin 604 is inserted into the retraction spring mounting groove to form a sliding fit, and the other end is in contact with the bottom of the sliding mounting groove 706 of the ball bearing mechanism.

[0109] See Figures 31 to 43In the case where the unlocking mechanism 3 employs an electronic control mechanism, to facilitate unlocking in the event of insufficient or no power (e.g., circuit failure, damaged electronic components), the present invention incorporates a manual knob mechanism mounted on the main shaft 401. The manual knob mechanism comprises a knob 18, a knob slider 19, a vortex spring 20, and a transmission wheel 404. Knob 18 is fixedly mounted on the end of the main shaft 401 extending outside the lock housing 403. The main shaft 401 has an axially extending central through-hole, within which a shaft slider core shaft 401-C is slidably mounted. A shaft slider core shaft drive head 401-D is fixedly mounted on the end of the shaft slider core shaft 401-C proximal to the knob 18, and a shaft slider 401-B is fixedly mounted on the other end of the shaft slider core shaft 401-C. For ease of assembly, knob 18 can be directly mounted on the main shaft 401 and then secured with a set screw 1801.

[0110] The outer wall of the knob 18 is provided with a knob radial groove, and a knob slider 19 is slidably installed in the knob radial groove. The inner end of the knob slider 19 is combined with the shaft slider core shaft driving head 401-D to form an oblique wedge mechanism. When the knob slider 19 moves toward the center of the knob 18, the knob slider 19 drives the shaft slider core shaft driving head 401-D to move toward the direction close to the knob 18; the knob slider 19 is equipped with a knob slider first spring 1903, and the reset elastic force of the knob slider first spring 1903 makes the knob slider 19 have a tendency to move along the knob radial groove toward away from the center of the knob 18; the side wall of the knob slider 19 is equipped with a knob slider limit pin 1902, and the side wall of the knob radial groove has a knob slider limit groove adapted to the knob slider limit pin 1902. To facilitate assembly, knob slider stop pin 1902 can typically be a spring pin. Specifically, knob slider stop pin 1902 is coaxially disposed with knob slider second spring 1901, and the return force of knob slider second spring 1901 is utilized to install knob slider stop pin 1902. Knob slider first spring 1903 can also be installed in conjunction with knob slider pin 1904. Knob slider first spring 1903 and knob slider pin 1904 are coaxially disposed within the spring mounting slot. Knob slider pin 1904 partially extends outside the spring mounting slot and abuts against the fixed wall surface of knob 18.

[0111] The inner wall of the middle through hole of the rotating shaft is provided with a step surface in the middle area, and a rotating shaft slider spring 401-A is installed between the step surface and the end face of the rotating shaft slider 401-B. The reset elastic force of the rotating shaft slider spring 401-A makes the rotating shaft slider 401-B tend to move away from the knob 18.

[0112] The transmission wheel 404 is sleeved on the main rotating shaft 401 through the central through hole of the transmission wheel. The transmission wheel 404 is installed in the area of ​​the main rotating shaft 401 where the rotating shaft slider 401-B is set. The locking mechanism 3 is connected to the transmission wheel 404 to drive the transmission wheel 404 to rotate. The inner side wall of the central through hole of the transmission wheel is provided with a transmission wheel arc-shaped limiting groove extending along its circumference. The side wall of the main rotating shaft 401 is fixedly provided with a rotating shaft limiting pin 401-E adapted to the transmitting wheel arc-shaped limiting groove. The rotating shaft limiting pin 401-E is inserted into the transmitting wheel arc-shaped limiting groove to form a sliding fit.

[0113] The inner side wall of the central through hole of the transmission wheel is provided with a transmission wheel groove extending along its radial direction, and a transmission wheel slider 404-A is slidably installed in the transmission wheel groove. The transmission wheel slider 404-A is equipped with a transmission wheel slider spring 404-B. The reset elastic force of the transmission wheel slider spring 404-B makes the transmission wheel slider 404-A tend to move along the transmission wheel groove toward the center of the transmission wheel 404. To facilitate assembly and use, the transmission wheel slider spring 404-B can be implemented in conjunction with the transmission wheel slider spring pin 404-C. The transmission wheel slider spring 404-B and the transmission wheel slider spring pin 404-C are coaxially installed in the transmission wheel slide groove. One end of the transmission wheel slider spring 404-B is connected to the transmission wheel slider 404-A, and the other end is connected to the transmission wheel slider spring pin 404-C. The transmission wheel slide groove is a through-hole structure arranged along the radial direction of the transmission wheel 404. The outer peripheral fixed sleeve of the transmission wheel 404 is provided with a transmission wheel ring 404-D, and the transmission wheel ring 404-D limits and fixes the outer end of the transmission wheel slider spring pin 404-C.

[0114] The outer wall of the main shaft 401 is provided with a shaft slider bar groove that is compatible with the shaft slider 401-B. The outer end surface of the shaft slider 401-B is flush with the outer wall of the main shaft 401. The outer end surface of the shaft slider 401-B is provided with a clutch groove. One side wall of the clutch groove is combined with the transmission wheel slider 404-A to form an oblique mechanism (it can be understood that in order to form an oblique mechanism, one side wall of the clutch groove must be provided with a corresponding inclined surface structure). When the shaft slider 40 When 1-B moves toward the direction close to the knob 18, the clutch groove (the side with the bevel) of the shaft slider 401-B can drive the transmission wheel slider 404-A to move away from the center of the transmission wheel 404, and can make the transmission wheel slider 404-A disengage from the shaft slider bar groove. At this time, when the main shaft 401 rotates in the unlocking direction, the main shaft 401 cannot be linked with the transmission wheel 404, and can only be driven to rotate by the knob 18 to achieve manual unlocking.

[0115] The vortex spring 20 is sleeved on the main rotating shaft 401, one end of the vortex spring 20 is fixed on the fixed component in the lock shell 403 (in this embodiment, the fixed component is the bracket 204, and the bracket 204 is designed with a rotating shaft through hole 204-J for the main rotating shaft 401 to pass through), and the other end is fixed on the main rotating shaft 401; the reset elastic force of the vortex spring 20 makes the main rotating shaft 401 have a tendency to drive the lock tongue 705-D to move in the direction of inserting the lock tongue connecting hole 801, and at the same time makes the rotating shaft limit pin 401-E abut against one side of the arc-shaped limiting groove of the transmission wheel. At this time, the transmission wheel slider 404-A is aligned with the strip-shaped sliding groove of the rotating shaft slider.

[0116] When the first spring 1903 of the knob slider, the spring 401-A of the rotating shaft slider, the vortex spring 20 and the spring 404-B of the transmission wheel slider are all in a natural state, the transmission wheel slider 404-A is inserted into the clutch groove on the rotating shaft slider 401-B. At this time, the main rotating shaft 401 and the transmission wheel 404 can rotate synchronously, and the unlocking mechanism 3 can be used to unlock normally.

[0117] When manual unlocking is required, the knob slider 19 is pushed inward. The knob slider 19 drives the spindle slider core shaft drive head 401-D to move toward the knob 18. The spindle slider 401-B simultaneously moves toward the knob 18. The clutch groove (with the beveled side) of the spindle slider 401-B drives the transmission wheel slider 404-A to move away from the center of the transmission wheel 404, thereby causing the transmission wheel slider 404-A to disengage from the spindle slider bar groove. At this time, when the main shaft 401 rotates in the unlocking direction, the main shaft 401 cannot be linked with the transmission wheel 404 and can only be driven to rotate by the knob 18 to achieve manual unlocking. If the electric control mechanism uses manual power generation to unlock, if the trigger mechanism drive head 504-B is accidentally touched after unlocking, the lock tongue 705-D will automatically pop out. When you want to close the door again, you must regenerate power and use the mobile phone Bluetooth to connect to the lock to unlock again. The operation steps are cumbersome. After adopting the manual knob mechanism solution, the knob 18 can be used directly to unlock the door, eliminating the tedious steps of generating electricity and unlocking the door after pairing with a mobile phone Bluetooth connection.

[0118] The transmission connection between the unlocking mechanism 3 and the transmission wheel 404 can take various forms, such as a belt drive mechanism, a gear drive mechanism, etc. In the embodiment shown in the accompanying drawings of the present invention, a gear drive mechanism is employed, wherein the unlocking mechanism 3 drives a large gear 406, which is in transmission connection with the transmission wheel 404 via a transition gear 405. The unlocking mechanism 3 preferably employs an electrically controlled mechanism with a generator 302, wherein the input shaft of the generator 302 is in transmission connection with an electrically controlled transmission shaft 301, which is in transmission connection with the large gear 406 via a clutch mechanism. For details, reference may be made to the patent document with authorization publication number CN213572060U. The large gear 406 in the present invention is equivalent to the "unlocking plate 612" in the patent document CN213572060U, and the electrically controlled transmission shaft 301 in the present invention is equivalent to the "transmission rod 605" in the patent document CN213572060U.

[0119] It is understandable that if the components inside the lock housing 403 interfere with each other, avoidance slots can be added. For example, a shaft through hole 204-J can be designed on the bracket 204 for the main shaft 401 to pass through, and a trigger mechanism slide groove 504-E can be designed on the trigger mechanism slider 504 for the main shaft 401 to pass through.

[0120] The present invention can be used in a variety of scenarios, single door can refer to Figure 44 (The lock body assembly 4 is fixed on the single door 11, and the lock box 8 is fixed on the door frame 10). For double doors, please refer to Figures 45 to 48 (The two doors are provided with a lock assembly 4 and a lock box 8 at the butt end respectively). Figure 49 and Figure 50 (The lock body assembly 4 is fixed on the sliding door 17, and the lock box 8 is fixed on the door frame 10).

[0121] The present invention can also be applied to the quick connection and electric control automatic disconnection of various objects. Figure 51 and Figure 52 During implementation, the lock assembly 4 is fixed to the active object 21, and the lock box 8 is fixed to the slave object 22. The lock box 8 contacts the trigger mechanism drive head 504-B, and the lock tongue 705-D quickly pops out and extends into the hole of the lock box 8. The limiting ball 703 is also pushed out, forming an undercut. Without releasing the undercut, the lock tongue 705-D cannot be withdrawn from the lock box 8, thereby firmly connecting the active object 21 and the slave object 22. The unlocking mechanism 3 is operated to unlock, and the active object 21 can leave the slave object 22.

Claims

1. A multi-purpose lock, comprising a lock body assembly (4), a lock tongue assembly (705) and a lock box (8), wherein the lock tongue assembly (705) comprises a lock tongue (705-D), and the lock body assembly (4) comprises a lock shell (403) and a main rotating shaft (401); a lock tongue through hole (403-A) is provided at the right end of the lock shell (403), a lock tongue connecting hole (801) is provided at the left end of the lock box (8), and the main rotating shaft (401) is rotatably arranged relative to the lock shell (403), and the axis of the main rotating shaft (401) is horizontally arranged and extends along the front-back direction of the lock shell (403). The shaft (401) is provided with an unlocking mechanism (3) for driving the rotation thereof. The main rotating shaft (401) and the lock tongue (705-D) are connected via a transmission mechanism. The rotation of the main rotating shaft (401) can drive the lock tongue (705-D) to perform reciprocating linear motion along the axial direction of the lock tongue through hole (403-A). When the lock is in a locked state, the lock tongue (705-D) extends out of the lock tongue through hole (403-A) and is inserted into the lock tongue connecting hole (801). When the lock is in an unlocked state, the lock tongue (705-D) retracts into the lock tongue through hole (403-A). The invention is characterized in that: A ball-lift mechanism sliding installation groove (706) is provided on one side of the lock tongue (705-D) toward the inner end of the lock tongue through hole (403-A), and at least one ball guide hole is provided on the inner cavity side wall of the ball-lift mechanism sliding installation groove (706), a limiting ball (703) is installed in the ball guide hole, and both ends of the ball guide hole are provided with a limiting structure for preventing the limiting ball (703) from falling from the ball guide hole, a ball-lift mechanism sliding installation groove (706) is installed with a slidable ball shaft (602), and the inner end side of the ball shaft (602) is provided with a ball guide hole. The wall has a limiting ball driving inclined surface matched with the limiting ball (703); a retraction spring (603) is installed between the inner end surface of the top ball shaft (602) and the bottom of the top ball mechanism sliding installation groove (706); the outer end of the top ball shaft (602) is fixedly provided with a top ball mechanism slider seat (601); the lock tongue (705-D) is fixedly provided with a top ball mechanism limiting pin (704) on the outer side of the top ball mechanism sliding installation groove (706); and the side wall of the lock tongue connecting hole (801) has a limiting ball clamping groove matched with the limiting ball (703); The transmission mechanism between the main rotating shaft (401) and the lock tongue (705-D) comprises a shift fork (1) and a connecting rod (701). The shift fork (1) is connected to the main rotating shaft (401) and can rotate synchronously with the main rotating shaft (401). One end of the connecting rod (701) is hinged to the shift fork (1) and the other end is hinged to the lock tongue (705-D). A shift fork roller (103) is installed on the shift fork (1). The outer peripheral surface of the shift fork roller (103) forms a transmission coupling with the outer surface of the slider seat (601) of the ball mechanism. When the shift fork (1) drives the lock tongue (705-D) to move in the direction of inserting into the lock tongue connecting hole (801), the shift fork roller (103) can simultaneously drive the top ball shaft (602) to move in the direction of inserting into the top ball mechanism sliding installation groove (706); when the shift fork (1) drives the lock tongue (705-D) to move in the direction of retracting the lock tongue through hole (403-A), the return spring (603) drives the top ball shaft (602) to move in the direction close to the top ball mechanism limit pin (704); When the lock is in a locked state, one side of the limiting ball (703) is constrained by the outer peripheral surface of the ball-lifting shaft (602) and cannot be retracted into the ball guide hole, while the other side forms a locking structure with the limiting ball slot on the side wall of the lock tongue connecting hole (801), and the shift fork roller (103) abuts against the ball-lifting mechanism slider seat (601) to prevent the ball-lifting shaft (602) from retreating; When the lock is in the unlocked state, the outer end of the ball-lifting shaft (602) is limited by the ball-lifting mechanism limiting pin (704), and the limiting ball (703) is retracted into the ball guide hole.

2. The multi-purpose lock according to claim 1, characterized in that: The lock comprises a trigger mechanism assembly (5) and a bracket assembly (2), The trigger mechanism assembly (5) includes a trigger mechanism slider (504) and a trigger mechanism paddle (503). The trigger mechanism slider (504) is slidably arranged relative to the lock shell (403). The right end of the lock shell (403) is provided with a trigger mechanism through hole (403-B). The end of the trigger mechanism slider (504) has a trigger mechanism driving head (504-B) adapted to the trigger mechanism through hole (403-B). The trigger mechanism driving head (504-B) has at least a first state extending out of the right end surface of the trigger mechanism through hole (403-B) and a second state retracted into the trigger mechanism through hole (403-B). The trigger mechanism slider (504) is equipped with a trigger mechanism spring (205). The trigger mechanism spring (205) is provided with a trigger mechanism spring (205). 05) can switch the trigger mechanism driving head (504-B) from the second state to the first state; the trigger mechanism paddle (503) is rotatably arranged on the trigger mechanism slider (504) through the paddle rotating shaft (504-C); the axis of the paddle rotating shaft (504-C) is horizontally arranged and extends along the front-back direction of the lock shell (403); a paddle limiting pin (504-A) is fixedly arranged on the trigger mechanism slider (504); a paddle torsion spring (502) is provided between the trigger mechanism paddle (503) and the paddle rotating shaft (504-C); the reset elastic force of the paddle torsion spring (502) makes the trigger mechanism paddle (503) have a tendency to rotate in a direction close to the paddle limiting pin (504-A); The bracket assembly (2) includes a bracket (204) and a bracket slider (203), the bracket (204) is fixed in the lock shell (403), the bracket slider (203) is slidably mounted on the bracket (204) and can slide up and down relative to the lock shell (403), a slider foot spring (201) is provided between the bracket slider (203) and the bracket (204), and the reset elastic force of the slider foot spring (201) makes the bracket slider (203) have a tendency to slide downward relative to the lock shell (403); the bracket slider (203) includes a bracket slider matching portion B (203-B) located at its upper end and a bracket slider matching portion A (203-A) located at its lower end; the spring force of the paddle torsion spring (502) is smaller than the spring force of the slider foot spring (201), The upper side surface of the inner end portion of the lock tongue (705-D) is provided with a protruding limit card (705-E), and the upper side surface of the inner end surface of the lock tongue (705-D) is provided with an oblique push surface (705-F) at a position adjacent to the limit card (705-E); when the lock tongue (705-D) moves toward the direction of retracting the lock tongue through hole (403-A), the support slider (203) can be driven to move upward by the cooperation of the oblique push surface (705-F) and the bracket slider matching part B (203-B); when the lock tongue (705-D) is completely retracted into the lock tongue through hole (403-A), the bracket slider (203) can move downward by the slider foot spring (201) and make the bracket slider matching part B (203-B) 3-B) is fixedly engaged with the limit card (705-E), and at the same time, the trigger mechanism driving head (504-B) is in the first state, the trigger mechanism paddle (503) is in contact with the paddle limiting pin (504-A), and the driving head of the trigger mechanism paddle (503) is located in the right area of ​​the bracket slider matching portion A (203-A); when the trigger mechanism driving head (504-B) switches from the first state to the second state, the driving head of the trigger mechanism paddle (503) is engaged with the bracket slider matching portion A (203-A) to drive the bracket slider (203) to move upward and cause the bracket slider matching portion B (203-B) to be disengaged from the limit card (705-E); A shift fork reset torsion spring (9) is sleeved on the main rotating shaft (401), one end of the shift fork reset torsion spring (9) is in contact with a fixed component in the lock housing (403), and the other end is in contact with a fixed component on the shift fork (1). The reset elastic force of the shift fork reset torsion spring (9) enables the shift fork (1) to have a tendency to drive the lock tongue (705-D) to move in the direction of inserting into the lock tongue connecting hole (801).

3. The multi-purpose lock according to claim 2, characterized in that: The shift fork (1) is provided with a shift fork limiting edge (104), a shift fork connecting rod connecting hole (102) for connecting the connecting rod (701), and a shift fork transmission hole (101) for connecting the main rotating shaft (401); the shift fork roller (103) is provided at one end of the shift fork (1) in the axial direction; the shift fork transmission hole (101) is provided at the other end of the shift fork (1) in the axial direction; the shift fork connecting rod connecting hole (102) is provided in the area between the shift fork transmission hole (101) and the shift fork roller (103); the ball mechanism slider seat (601) is provided with a shift fork roller limiting arc groove adapted to the shift fork roller (103); and a bracket limiting block (204-B) is fixedly provided on the bracket (204); When the lock is in a locked state, the reset elastic force of the shift fork reset torsion spring (9) causes the shift fork limiting edge (104) of the shift fork (1) to abut against the bracket limiting block (204-B), and the shift fork roller (103) to engage with the shift fork roller limiting arc groove. At the same time, with the radial cross section of the main shaft (401) as the projection reference surface, the center point of the shift fork transmission hole (101) is set as point X, the center point of the shift fork connecting rod connecting hole (102) is set as point O, and the center point of the hinge axis between the connecting rod (701) and the lock tongue (705-D) is set as point Y. The angle ∠XOY formed by point X, point O and point Y is an obtuse angle.

4. The multi-purpose lock according to claim 2, wherein: The bracket (204) is provided with a bracket rectangular hole (204-A), the bracket slider matching portion B (203-B) is inserted into the bracket rectangular hole (204-A) in the horizontal direction, the bracket (204) is fixedly provided with a bracket limiting block (204-B), the bracket limiting block (204-B) is provided with a bracket slider groove (204-H), the bracket slider matching portion A (203-A) is inserted into the bracket slider groove (204-H) in the vertical direction, and the bracket slider (203) is slidably installed on the bracket (204) through the matching of the bracket slider matching portion B (203-B) with the bracket rectangular hole (204-A) and the matching of the bracket slider matching portion A (203-A) with the bracket slider groove (204-H).

5. The multi-purpose lock according to claim 2, characterized in that: A slider foot spring baffle (204-F) is fixedly provided on the bracket (204), a spring limiting shaft (202) is fixedly installed on the slider foot spring baffle (204-F), a slider foot spring (201) is sleeved on the spring limiting shaft (202), one end of the slider foot spring (201) is connected to the slider foot spring baffle (204-F), and the other end is connected to the bracket slider (203); A trigger mechanism spring limiting baffle (204-M) is fixedly provided on the bracket (204), a trigger mechanism spring central axis (206) is fixedly installed on the trigger mechanism spring limiting baffle (204-M), a trigger mechanism spring limiting block (504-D) is fixedly provided on the trigger mechanism slider (504), the trigger mechanism spring limiting block (504-D) forms a sliding fit with the trigger mechanism spring central axis (206) through a trigger mechanism guide hole provided thereon, the trigger mechanism spring (205) is sleeved on the trigger mechanism spring central axis (206), one end of the trigger mechanism spring (205) is connected to the trigger mechanism spring limiting baffle (204-M), and the other end is connected to the trigger mechanism spring limiting block (504-D).

6. The multi-purpose lock according to claim 2, wherein: The lock comprises a top and bottom rod (402), a top and bottom rod through hole adapted to the top and bottom rod (402) is provided on a lock housing (403), the top and bottom rod (402) can move vertically up and down relative to the lock housing (403), the top and bottom rod (402) has a top and bottom rod A axis (402-A) and a top and bottom rod B axis (402-B) extending along the front and rear directions of the lock housing (403), the top and bottom rod A axis (402-A) and the top and bottom rod B axis (402-B) are arranged relative to each other, The bracket (204) is provided with a bracket strip slide (204-G), the length direction of the bracket strip slide (204-G) is arranged vertically, the lock tongue assembly (705) includes a top and bottom rod connecting plate fixedly arranged on the inner end of the lock tongue (705-D), the top and bottom rod connecting plate is provided with a lock tongue bottom plate slide (705-A), the top and bottom rod A axis (402-A) is inserted into the bracket strip slide (204-G) and forms a sliding fit, and the top and bottom rod B axis (402-B) is inserted into the top and bottom rod B axis (402-B) It is arranged in the lock tongue bottom plate slot (705-A) and forms a sliding fit. The extension direction of the lock tongue bottom plate slot (705-A) meets the following requirements: when the lock tongue (705-D) moves in the direction of inserting the lock tongue connecting hole (801), the top and bottom rod (402) extends outward relative to the inner cavity of the lock shell (403); when the lock tongue (705-D) moves in the direction of retracting the lock tongue through hole (403-A), the top and bottom rod (402) retracts inward relative to the inner cavity of the lock shell (403).

7. The multi-purpose lock according to claim 2, wherein: The outer end of the trigger mechanism driving head (504-B) is a spherical structure, an inclined surface structure or a truncated cone structure.

8. The multi-purpose lock according to claim 1, wherein: The locking tongues (705-D) are two pieces arranged in parallel, and each locking tongue (705-D) is equipped with two limiting balls (703) arranged opposite to each other.

9. The multi-purpose lock according to claim 1, wherein: The inner end surface of the ball-lift shaft (602) is provided with a retraction spring installation groove, and the retraction spring (603) is installed in the retraction spring installation groove. The end of the retraction spring (603) away from the bottom of the retraction spring installation groove is connected to the retraction pin (604), one end of the retraction pin (604) is inserted into the retraction spring installation groove and forms a sliding fit, and the other end abuts against the bottom of the sliding installation groove (706) of the ball-lift mechanism.

10. The multi-purpose lock according to any one of claims 1 to 9, characterized in that: The unlocking mechanism (3) is an electric control mechanism. A manual knob mechanism is installed on the main rotating shaft (401). The manual knob mechanism includes a knob (18), a knob slider (19), a vortex spring (20) and a transmission wheel (404). The knob (18) is fixedly installed on one end of the main rotating shaft (401) extending outside the lock housing (403). The main rotating shaft (401) has a rotating shaft middle through hole extending in the axial direction. A rotating shaft slider core shaft (401-C) is slidably installed in the rotating shaft middle through hole. A rotating shaft slider core shaft driving head (401-D) is fixedly installed on the rotating shaft slider core shaft (401-C) at one end close to the knob (18). A rotating shaft slider (401-B) is fixedly installed on the other end of the rotating shaft slider core shaft (401-C). The outer wall of the knob (18) is provided with a knob radial groove, and a knob slider (19) is slidably installed in the knob radial groove. The inner end of the knob slider (19) is combined with the shaft slider core shaft driving head (401-D) to form an oblique mechanism. When the knob slider (19) moves in the direction close to the center of the knob (18), the knob slider (19) drives the shaft slider core shaft driving head (401-D) to move in the direction close to the knob (18); the knob slider (19) is equipped with a knob slider first spring (1903), and the reset elastic force of the knob slider first spring (1903) makes the knob slider (19) have a tendency to move along the knob radial groove in the direction away from the center of the knob (18); the side wall of the knob slider (19) is equipped with a knob slider limit pin (1902), and the side wall of the knob radial groove has a knob slider limit groove adapted to the knob slider limit pin (1902); The inner wall of the through hole in the middle of the rotating shaft is provided with a step surface in the middle region, and a rotating shaft slider spring (401-A) is installed between the step surface and the end face of the rotating shaft slider (401-B). The return elastic force of the rotating shaft slider spring (401-A) makes the rotating shaft slider (401-B) have a tendency to move away from the knob (18); The transmission wheel (404) is sleeved on the main rotating shaft (401) through the transmission wheel center through hole. The transmission wheel (404) is installed in the area of ​​the main rotating shaft (401) where the rotating shaft slider (401-B) is provided. The unlocking mechanism (3) is connected to the transmission wheel (404) in a transmission manner to drive the transmission wheel (404) to rotate. The inner side wall of the transmission wheel center through hole is provided with a transmission wheel arc-shaped limiting groove extending along its circumference. The side wall of the main rotating shaft (401) is fixedly provided with a rotating shaft limiting pin (401-E) adapted to the transmission wheel arc-shaped limiting groove. The rotating shaft limiting pin (401-E) is inserted into the transmission wheel arc-shaped limiting groove to form a sliding fit. The inner side wall of the central through hole of the transmission wheel is provided with a transmission wheel sliding groove extending in its radial direction, a transmission wheel slider (404-A) is slidably installed in the transmission wheel sliding groove, and the transmission wheel slider (404-A) is equipped with a transmission wheel slider spring (404-B). The reset elastic force of the transmission wheel slider spring (404-B) makes the transmission wheel slider (404-A) have a tendency to move along the transmission wheel sliding groove toward the center of the transmission wheel (404); The outer wall of the main rotating shaft (401) is provided with a rotating shaft slider bar groove that is compatible with the rotating shaft slider (401-B), the outer end surface of the rotating shaft slider (401-B) is flush with the outer wall of the main rotating shaft (401), and the outer end surface of the rotating shaft slider (401-B) is provided with a clutch groove, and a side wall of the clutch groove is combined with the transmission wheel slider (404-A) to form an oblique mechanism. When the rotating shaft slider (401-B) moves in a direction close to the knob (18), the clutch groove of the rotating shaft slider (401-B) can drive the transmission wheel slider (404-A) to move in a direction away from the center of the transmission wheel (404), and can make the transmission wheel slider (404-A) disengage from the rotating shaft slider bar groove; The vortex spring (20) is sleeved on the main rotating shaft (401), one end of the vortex spring (20) is fixed to the fixed component in the lock housing (403), and the other end is fixed to the main rotating shaft (401); the return elastic force of the vortex spring (20) makes the main rotating shaft (401) have the tendency to drive the lock tongue (705-D) to move in the direction of inserting into the lock tongue connecting hole (801), and at the same time makes the rotating shaft limiting pin (401-E) abut against one side of the arc-shaped limiting groove of the transmission wheel, at this time the transmission wheel slider (404-A) is aligned with the strip-shaped sliding groove of the rotating shaft slider; When the first spring (1903) of the knob slider, the spring (401-A) of the rotating shaft slider, the vortex spring (20) and the spring (404-B) of the transmission wheel slider are all in a natural state, the transmission wheel slider (404-A) is inserted into the clutch groove on the rotating shaft slider (401-B), and the main rotating shaft (401) and the transmission wheel (404) can rotate synchronously.

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