Self-releasing lock

Abstract

The utility model relates to a lock technology field discloses a self -ejection lock from, including lock box and in its inside bevel tongue subassembly, square tongue subassembly, trigger subassembly and dial peach subassembly, bevel tongue subassembly and square tongue subassembly through trigger subassembly link motion, trigger subassembly includes first dial sheet, second dial sheet, locking sheet and third spring, locking sheet rotates and establishes in the lock box, the one side of locking sheet forms the locking column that can embed in locking recess, the other side rotationally establishes second dial sheet, one end of second dial sheet leans in the side of locking sheet, the other end rotationally establishes first dial sheet, one side of second dial sheet forms first lock -off portion, dial peach subassembly includes coaxial rotation setting handle dial peach and transmission tooth, the outer periphery of handle dial peach forms with first lock -off portion opposite second lock -off portion, transmission tooth and square tongue plate link motion. The self -ejection lock when locking, even if trigger subassembly failed to trigger square tongue pops out, and the user can also realize locking through handle quickly.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a self-springing lock. Background Technology

[0002] The main feature of a self-locking mechanism is that the latch automatically extends and locks after the door is closed. The lock body includes a bolt assembly, a square bolt assembly, and a trigger assembly. During the locking process, when the bolt retracts into the lock housing and then extends back into the latch box, the trigger assembly is activated to release the square bolt assembly, allowing it to extend and lock. Furthermore, after unlocking, the lock must remain in the unlocked state; that is, only the bolt should extend from the lock housing, while the square bolt remains locked. Currently, self-locking mechanisms have the following problems: 1. When the door is open, accidentally touching the latch may trigger the square latch to pop out, affecting the user experience; 2. When closing the door, if the triggering component fails to trigger the unlocking latch to pop out, you need to press down the handle again to open the door and then close the door to trigger it, which is complicated. Utility Model Content

[0003] This utility model was made to solve the above-mentioned technical problems. Its purpose is to provide a self-locking mechanism that allows the user to quickly lock the door using the handle even if the triggering component fails to trigger the latch to pop out.

[0004] According to one embodiment of the present invention, a self-locking mechanism is provided, comprising a lock box and a latch assembly, a square latch assembly, a trigger assembly, and a lever assembly therein; the latch assembly includes a latch, a first connecting rod, a fixing block, a first spring, and a slider, the fixing block being fixed inside the lock box, the first connecting rod being slidably disposed within the fixing block, the latch and the slider being respectively connected to the two ends of the first connecting rod, the slider being slidably disposed within the lock box, and the first spring applying an outward force to the latch; the square latch assembly includes a square latch, a second spring, and a square latch plate slidably disposed within the lock box, the side of the square latch plate forming a locking groove, and the second spring applying an outward force to the square latch plate; the trigger assembly includes a first lever, a second lever, a locking plate, and a third spring, the locking plate being rotatably disposed within the lock box, and the locking plate... One side has a locking pin that can be embedded in the locking groove, and the other side has a second paddle that is rotatably provided. One end of the second paddle abuts against the side of the locking plate, and the other end has a first paddle that is rotatably provided. The side of the first paddle near the tongue assembly has a paddle part, and the other side is connected to a third spring. The third spring applies a force to the first paddle, so that the side of the paddle part abuts against the fixed block. One side of the second paddle has a first locking part. When the front end of the paddle part is between the slider and the fixed block, the front end of the paddle part extends to the path of the slider sliding outward. The paddle assembly includes a handle paddle and a transmission tooth that are coaxially rotatably provided. The outer periphery of the handle paddle has a second locking part that is opposite to the first locking part. The transmission tooth is connected to the square tongue plate.

[0005] In one embodiment, an inclined first groove is formed on the square tongue plate; a third lever is rotatably provided inside the lock box, and a first lever is formed on the third lever that slides in the first groove; the third lever meshes with the transmission gear for transmission; the second spring is a torsion spring, one end of which is fixed inside the lock box, and the other end abuts against the third lever.

[0006] In one embodiment, the outer periphery of the transmission tooth is formed with a transmission portion extending toward the handle puller side, and the transmission portion is opposite to the second locking portion.

[0007] In one embodiment, the outer periphery of the handle is formed with an unlocking part, and the unlocking part and the second locking part are located on both sides of the transmission part.

[0008] As one embodiment, the lock box is further provided with an anti-accidental activation component, which includes: a safety latch, slidably disposed in a latch hole on the side wall of the lock box; a safety linkage, slidably disposed in the lock box and connected to the safety latch; a safety spring, disposed in the lock box, applying a force toward the outside of the lock box to the safety linkage; a safety lever, rotatably disposed in the lock box, one end of which is connected to the safety linkage; and a safety push rod, slidably disposed in the lock box, one end of which is connected to the other end of the safety lever, and the other end of which is connected to the triggering component; wherein when the safety latch slides to the outside of the lock box, the safety linkage drives the safety lever to rotate, and the safety push rod slides, thereby disengaging the triggering component from the latch assembly; when the safety latch slides to the inside of the lock box, the safety push rod slides in the opposite direction, thereby restoring the triggering component from the latch assembly.

[0009] In one embodiment, the lock box is provided with a fourth spring, which applies a force to the locking piece, causing the locking pin to be embedded in the locking groove.

[0010] According to one embodiment of the present invention, a self-locking mechanism is provided, comprising a lock housing and a latch assembly, a square latch assembly, a trigger assembly, and a triggering assembly therein; the latch assembly includes a latch, a first connecting rod, a fixing block, a first spring, and a slider, the fixing block being fixed inside the lock housing, the first connecting rod being slidably disposed within the fixing block, the latch and the slider being respectively connected to the two ends of the first connecting rod, the slider being slidably disposed within the lock housing, and the first spring applying an outward force to the latch; the square latch assembly includes a square latch, a second spring, and a square latch plate slidably disposed within the lock housing, the side of the square latch plate having a locking groove, and the second spring applying an outward force to the square latch plate; the triggering assembly includes a first spring, a second spring, a second spring, and a third spring. The lock assembly includes a lever, a locking plate, and a third spring. The locking plate is rotatably disposed within the lock housing. One side of the locking plate has a locking post that can be embedded in the locking groove, and the other side has the first lever rotatably disposed thereon. The first lever has a tossing part on the side near the latch assembly, and the other side is connected to the third spring. The third spring applies a force to the first lever, causing the side of the tossing part to abut against the fixing block and causing the locking post to be embedded in the locking groove. One side of the locking plate has a first locking part. The lever assembly includes a handle lever and a transmission tooth that are coaxially rotatably disposed. The outer periphery of the handle lever has a second locking part that is opposite to the first locking part. The transmission tooth is connected to the square tongue plate.

[0011] In one embodiment, an inclined first groove is formed on the square tongue plate; a third lever is rotatably provided inside the lock box, and a first lever is formed on the third lever that slides in the first groove; the third lever meshes with the transmission gear for transmission; the second spring is a torsion spring, one end of which is fixed inside the lock box, and the other end abuts against the third lever.

[0012] In one embodiment, the outer periphery of the transmission tooth is formed with a transmission portion extending toward the handle puller side, and the transmission portion is opposite to the second locking portion.

[0013] In one embodiment, the outer periphery of the handle is formed with an unlocking part, and the unlocking part and the second locking part are located on both sides of the transmission part.

[0014] Based on the above description and practice, this self-springing lock, when applied to a door, utilizes the linkage between the trigger component, the latch component, and the square latch component to control the square latch in the square latch component to automatically extend when the door is closed. If the square latch fails to extend automatically during the closing process, rotating the handle lever and the transmission gear will rotate the second lever, causing the locking pin on the locking plate to move out of the locking groove, thus releasing the limitation on the square latch plate. The rotation of the transmission gear will then drive the square latch plate to move outward, thereby locking the door. Attached Figure Description

[0015] Figures 1 to 5 This is a schematic diagram of the internal structure of the self-locking lock in Embodiment 1 of this utility model during automatic locking. Figures 1 to 5 The changes in position of the internal components of the lock box during the locking process are shown in sequence.

[0016] Figure 6 for Figure 5 A schematic diagram of the internal structure of the self-spring lock from another perspective.

[0017] Figures 7 to 10 This is a schematic diagram of the internal structure of the self-locking mechanism involved in Embodiment 2 of this utility model when it is locked via the handle assembly. Figures 7 to 10 The changes in position of the internal components of the lock box during the locking process are shown in sequence.

[0018] Figure 11 This is a schematic diagram of the internal structure of the self-spring lock involved in Embodiment 3 of this utility model.

[0019] The attached figures are labeled as follows: 1. Lock box; 11. Limiting rod; 21. Slanted tongue; 22. First connecting rod; 23. Fixing block; 24. First spring; 25. Sliding block; 31. Square tongue; 32. Second spring; 33. Square tongue plate; 34. Locking groove; 35. First sliding groove; 36. Guide surface; 41. First paddle; 42. Locking piece; 43. Third spring; 44. Locking post; 45. Actuating part; 46. Fourth spring; 51. Second paddle; 52. Limiting part; 61. Third paddle; 62. First lever; 71. Safety tongue; 72. Safety connecting rod; 73. Safety spring; 74. Safety lever; 75. Safety push rod; 76. Sliding hole; 77. Baffle; 81. Handle lever; 82. Transmission gear; 83. First locking part; 84. Second locking part; 85. Transmission part; 86. Unlocking part. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0021] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1 According to one embodiment of the present invention, a self-locking mechanism is provided, which is described below in conjunction with... Figures 1 to 6 The self-leaning lock is described using its application on a door as an example. The self-leaning lock includes a lock box 1 and its internal components: a latch assembly, a square latch assembly, a trigger assembly, and an anti-accidental activation assembly. The trigger assembly is linked to both the latch assembly and the square latch assembly.

[0024] The self-locking mechanism utilizes a trigger component that links the latch assembly and the bolt assembly. When the door is closed, the movement of the latch 21 triggers the bolt assembly to automatically extend. In this embodiment, an anti-accidental-touch component is included in the lock housing 1 to control the linkage between the latch assembly and the trigger component. The self-locking function is only achieved when the latch assembly and trigger component are linked. When they are not linked, even if the latch assembly moves, it will not trigger the bolt assembly to lock. Therefore, it avoids the situation where the bolt assembly (31) automatically locks due to accidental touch of the latch 21 when the door is open, thus achieving the anti-accidental-touch locking function.

[0025] In this embodiment, Figure 1 The self-locking mechanism shown is in the open position, with the oblique latch 21 extending out of the lock box 1, the square latch 31 located inside the lock box 1, and the safety latch 71 extending out of the lock box 1. Figure 2 The self-locking mechanism shown is in the state where the safety tongue 71 is pressed into the lock box 1 by the door frame when the door is closed. At this time, the latch 21 is not yet pressed into the lock box 1 by the door frame, or the latch 21 is not completely pressed into the lock box 1 by the door frame. Figure 3 The self-locking lock shown is in the state immediately after the door is closed, and the latch 21 has been completely pressed into the lock box 1 by the door frame; Figure 4 When the self-locking mechanism is in the closed state, the latch 21 is ejected outside the lock box 1, which at the same time drives the trigger component to operate and release the limit of the latch component. Figure 5 The self-locking mechanism shown is in the closed state, and the latch 31 has been ejected to lock the door.

[0026] Specifically, in this embodiment, the side of the lock box 1 is provided with a latch hole for the oblique latch 21, the square latch 31 and the safety latch 71 to extend out.

[0027] The anti-accidental activation component includes a safety latch 71, a safety link 72, a safety spring 73, a safety lever 74, and a safety push lever 75. The safety latch 71 is slidably disposed in a latch hole on the side wall of the lock housing 1, and can extend and retract along the latch hole, positioned either outside or inside the lock housing 1. The safety link 72 is slidably disposed inside the lock housing 1 and connected to the safety latch 71, primarily used to guide and limit the sliding direction of the safety latch 71. The safety spring 73 is disposed inside the lock housing 1, with one end connected to the safety link 72, and is used to apply a force towards the outside of the lock housing 1 to the safety link 72. When the safety latch 71 is not subjected to external force, the elastic force of the safety spring 73 can push the safety latch 71 out of the lock housing 1.

[0028] The safety lever 74 is rotatably mounted inside the lock box 1. One end of the safety lever 74 is connected to the safety link 72, which moves towards... Figure 1 When the lever moves to the left, it can rotate the safety lever 74 clockwise. The safety push rod 75 is slidably disposed within the lock housing 1. One end of the safety push rod 75 is connected to the other end of the safety lever 74, and the other end of the safety push rod 75 is connected to the trigger assembly. When the safety lever 74 rotates clockwise, its other end can push the safety push rod 75 towards... Figure 1 The upper side slides, and the top of the safety push rod 75 can push the trigger component to separate from the tongue component.

[0029] Specifically, in practical application, when the door is open, the safety latch 71 and safety linkage 72 are subjected to the elastic force of the safety spring 73, and the safety latch 71 will be outside the lock box 1. At this time, the safety lever 74 will be driven by the safety linkage 72 to rotate clockwise, and then the left end of the safety lever 74 can push the safety push rod 75 upward. After the safety push rod 75 moves upward, its upper end can push the trigger component to move, releasing the linkage between the trigger component and the latch component. Subsequently, in the open state, even if the user accidentally touches the latch 21, for example, by pushing the latch 21 into the lock box 1 and then moving it out, the trigger component will not operate, and the corresponding latch component will not automatically lock.

[0030] When the door needs to be closed later, the door frame will push the safety latch 71 into the lock box 1. At this time, the safety linkage 72 moves to the right, the safety lever 74 rotates counterclockwise, and the safety push lever 75 moves downward. The trigger component can resume its linkage with the latch assembly. As the latch 21 is pushed into the lock box 1 by the door frame and then extends out of the lock box 1, the trigger component can cause the latch assembly to automatically spring open and lock.

[0031] In this embodiment, the latch assembly includes a latch 21, a first connecting rod 22, a fixing block 23, a first spring 24, and a slider 25. The fixing block 23 is fixed inside the lock housing 1. The first connecting rod 22 is slidably disposed within the fixing block 23. The latch 21 and the slider 25 are respectively connected to the two ends of the first connecting rod 22. The slider 25 is slidably disposed inside the lock housing 1. The first spring 24 applies an outward force to the latch 21. When the latch assembly is not subjected to external force, the latch 21 will be pushed outside the lock housing 1 by the first spring 24. In this embodiment, the first spring 24 is a compression spring, which is sleeved on the first connecting rod 22, with its two ends abutting against the fixing block 23 and the latch 21, respectively. When the latch 21 is pressed and moves into the lock housing 1, or when the user actively operates the latch 21 to move into the lock housing 1, the compression force of the first spring 24 increases. After the latch assembly loses external force, the latch 21 is ejected outside the lock housing 1 by the first spring 24.

[0032] The latch assembly includes a latch 31, a second spring 32, and a latch plate 33 slidably disposed within the lock housing 1. The latch 31 and the latch plate 33 are connected together. A locking groove 34 is formed on the side of the latch plate 33. The second spring 32 applies an outward force to the latch plate 33. When the latch 31 and the latch plate 33 are not subjected to external force, the second spring 32 can push them outward to achieve locking.

[0033] The triggering assembly includes a first lever 41, a second lever 51, a locking plate 42, and a third spring 43. The locking plate 42 is rotatably disposed within the lock housing 1. One side of the locking plate 42 has a locking pin 44 that can be embedded in the locking groove 34, and the other side has the second lever 51 rotatably disposed thereon. The rotation path of the locking pin 44 is fixed. When the square tongue 31 retracts into the lock housing 1, the locking groove 34 on the square tongue plate 33 is located on the rotation path of the locking pin 44.

[0034] The second lever 51 is rotatably mounted inside the lock housing 1, with one end of the second lever 51 abutting against the side of the locking piece 42, such as... Figure 6 As shown, when the second lever 51 rotates clockwise around the figure, it can drive the locking piece 42 to rotate counterclockwise, thereby causing the locking pin 44 to move out of the locking groove 34. The other end of the second lever 51 is rotatably provided with the first lever 41.

[0035] like Figures 1 to 6 As shown, the middle part of the first paddle 41 is rotatably connected to the upper side of the second paddle 51. A paddle part 45 is formed on the side of the first paddle 41 near the tongue assembly, and the other side is connected to a third spring 43. The third spring 43 applies a force to the first paddle 41, generating a counterclockwise torque on the paddle part 45, allowing the paddle part 45 to rotate... Figure 1 The rotating part 45 rotates counterclockwise, causing the side of the moving part 45 to abut against the fixed block 23 when no external force is applied.

[0036] When the door is open, the internal structure of the self-locking mechanism is as follows: Figure 1 As shown. During the closing process, as... Figures 2 to 5 As shown, the latch 21 gradually moves into the lock box 1 under the pressure of the door frame, and the slider 25 moves inward at the same time. The front end of the actuating part 45 gradually moves from the right side of the slider 25 to between the fixed block 23 and the slider 25. At this time, the front end of the actuating part 45 extends to the path of the slider 25 sliding outward under the action of the third spring 43. When the door is closed, the latch 21 moves outward under the action of the first spring 24, and the slider 25 moves outward at the same time. The outer side of the slider 25 abuts against the front end of the actuating part 45. After overcoming the action of the third spring 43, it pushes the actuating part 45 to move outward at the same time, causing the second actuating plate 51 to rotate counterclockwise. The lower end of the second actuating plate 51 can push the locking plate 42 to rotate clockwise. The locking pin 44 on the locking plate 42 moves out of the locking groove 34, releasing the limit of the square latch plate 33. The square latch plate 33 drives the square latch 31 to move outward under the action of the second spring 32, realizing the locking. During the entire closing process, the user only needs to move the door leaf; no additional operation of the self-locking mechanism is required for automatic locking. Furthermore, the self-locking mechanism has a relatively simple structure, fewer parts, is less prone to malfunction, and has low manufacturing costs.

[0037] In this embodiment, a specific scheme is disclosed for the coordinated operation of the latch assembly, trigger assembly, and square latch assembly to achieve self-spring locking. The anti-accidental-touch component controls whether the latch assembly and trigger assembly are linked to achieve the function of preventing accidental locking. In other embodiments, by changing the specific scheme for the coordinated operation of the latch assembly, trigger assembly, and square latch assembly to achieve self-spring locking, the anti-accidental-touch component in this embodiment can be used to control whether the latch assembly and trigger assembly are linked to achieve the same function of preventing accidental locking.

[0038] In this embodiment, the safety linkage 72 is provided with a baffle 77, such as Figures 1 to 5 As shown, the baffle 77 is located on the side of the safety lever 74 away from the safety tongue 71; the safety push rod 75 is vertically disposed inside the lock box 1. When the safety linkage 72 moves to the left, the baffle 77 can drive the safety lever 74 to rotate clockwise; when the safety linkage 72 moves to the right, the safety lever 74 is not limited by the safety linkage 72, and the safety push rod 75 slides downward under its own weight, which can drive the safety lever 74 to rotate counterclockwise until the lower end of the safety lever 74 abuts against the baffle 77, or until the safety push rod 75 moves to the lowest point of its range of motion.

[0039] The upper end of the safety push rod 75 is located on the lower left side of the first paddle 41, that is, the end away from the actuating part 45. When the safety push rod 75 moves upward, its upper end abuts against the first paddle 41, causing the first paddle 41 to rotate clockwise. Correspondingly, the actuating part 45 moves downward away from the latch assembly, that is, the linkage between the trigger assembly and the latch assembly is disengaged. When the safety push rod 75 moves downward, the first paddle 41 returns to its position under the force of the third spring 43, causing the side of the actuating part 45 to abut against the fixing block 23, that is, the linkage between the trigger assembly and the latch assembly is restored.

[0040] The structure and positioning of the safety linkage 72, safety lever 74, and safety push lever 75 enable control over whether the trigger assembly and the latch assembly are linked.

[0041] In another embodiment, the safety linkage 72 is provided with two baffles 77 located on both sides of one end of the lever; the safety push rod 75 is provided with two baffles 77 located on both sides of the other end of the lever. When the safety linkage 72 moves to the left, the baffles 77 can drive the safety lever 74 to rotate clockwise, and the other end of the safety lever 74 can drive the safety push rod 75 to slide; when the safety linkage 72 moves to the right, the baffles 77 can drive the safety lever 74 to rotate counterclockwise, and the other end of the safety lever 74 can drive the safety push rod 75 to slide in the opposite direction. This structural form can also realize whether the control trigger component and the latch component are linked.

[0042] like Figure 5 As shown, a fourth spring 46 is provided inside the lock box 1. The fourth spring 46 applies a force to the locking plate 42, causing the locking pin 44 to be embedded in the locking groove 34. Specifically, in this embodiment, the fourth spring 46 is a torsion spring, with one end fixedly mounted on a torsion arm and the other end connected to the locking plate 42. The elastic force applied by the fourth spring 46 to the locking plate 42 is directed towards the side of the square tongue plate 33, so that when the locking plate 42 is not subjected to external force, the locking pin 44 abuts against the side of the square tongue plate 33. When the locking groove 34 is located on the rotation path of the locking pin 44, the fourth spring 46 can make the locking pin 44 press tightly against the locking groove 34, thereby limiting the position of the square tongue assembly.

[0043] In this embodiment, such as Figure 5 and Figure 6 As shown, an inclined first groove 35 is formed on the square tongue plate 33; a third lever 61 is rotatably disposed inside the lock box 1, and a first lever 62 that slides in the first groove 35 is formed on the third lever 61; the second spring 32 is a torsion spring, one end of which is fixed inside the lock box 1, and the other end abuts against the third lever 61. The elastic force applied by the second spring 32 to the third lever 61 can form along the third lever 61. Figure 6 The counterclockwise torque, when the square tongue plate 33 is not restricted, drives the third lever 61 to rotate. Figure 5 When rotated clockwise, the first lever 62 slides relative to the first slide groove 35, which drives the square tongue plate 33 and the square tongue 31 to move to the left, so that the square tongue 31 extends to lock.

[0044] In other embodiments, the second spring 32 can also act directly on the square tongue 31 or the square tongue plate 33, and can also complete the locking action when the square tongue plate 33 is not restricted.

[0045] In this embodiment, such as Figure 2 and Figure 3 As shown, a limiting part 52 is formed on the second lever 51, which is opposite to the fixing block 23. When the safety push rod 75 pushes the first lever 41 to rotate clockwise, after rotating a certain angle, the limiting part 52 will abut against the fixing block 23, which can limit the rotation angle of the first lever 41 and prevent interference with other structures inside the lock box 1. In addition, after the safety push rod 75 resets, the first lever 41 can also quickly return to its position under the elastic force of the third spring 43, so that the trigger assembly and the latch assembly resume their linkage relationship.

[0046] In this embodiment, one side of the square tongue plate 33 is an inclined guide surface 36, such as... Figure 5 As shown, the guide surface 36 is located on the side of the locking groove 34 away from the square tongue 31. When the square tongue 31 extends out of the lock box 1, the guide surface 36 is opposite to the locking post 44. During the subsequent movement of the square tongue plate 33 into the lock box 1, the guide surface 36 abuts against the locking post 44, which can guide the locking piece 42 along... Figure 5 Rotate clockwise to move the locking pin 44 into the locking groove 34, thus completing the limiting of the opposite tongue plate 33.

[0047] like Figure 6 As shown, in this embodiment, the safety push rod 75 has a strip-shaped sliding hole 76 along its own length direction, and the lock box 1 has a limiting rod 11 assembled in the sliding hole 76. This allows the safety push rod 75 to slide stably along its own length direction, and the sliding distance is the minimum length of the sliding hole 76.

[0048] In other embodiments, the first spring 24, the second spring 32, the third spring 43, and the fourth spring 46 can be selected from compression springs, tension springs, and torsion springs. By simply adjusting their positions, they can also perform the corresponding functions of the aforementioned springs.

[0049] Example 2 According to one embodiment of the present invention, a self-locking mechanism is provided, which is described below in conjunction with... Figures 7 to 10The self-leaning lock is described using its application on a door as an example. The main difference between this self-leaning lock and the self-leaning lock in Embodiment 1 is the addition of a latching component, which allows the user to manually move the latch 31 out when it fails to pop out automatically, thus locking the door.

[0050] exist Figures 7 to 10 In order to highlight the principle of manual locking achieved by the peach-picking component, the anti-accidental touch component has been omitted.

[0051] exist Figure 7 In the middle, the square tongue 31 component is located inside the lock box 1 and is limited by the locking piece 42, while the mortise component is in its initial position. Figure 8 In the middle, the pecking assembly begins to rotate counterclockwise, causing the second pecking piece 51 to rotate, which in turn drives the locking piece 42 to rotate, causing the locking pin 44 to move out of the locking groove 34, releasing the limiting position of the square tongue plate 33. The transmission gear 82 then drives the square tongue plate 33 to move to the left. Figure 9 In the middle, the square tongue 31 is fully extended, and the peach-picking assembly reaches the end of its counter-clockwise rotation. Figure 10 In the middle, the hands holding the peach 81 and the second paddle 51 are restored to their initial positions.

[0052] like Figures 7 to 10 As shown, the lever assembly includes a handle lever 81 and a transmission gear 82 coaxially rotatable. A second locking portion 84 extending outwards is formed on the outer periphery of the handle lever 81, and a first locking portion 83 is formed on one side of the second lever 51. The second locking portion 84 and the first locking portion 83 are disposed opposite each other. When the handle lever 81 rotates, the first locking portion 83 is located on the rotation path of the second locking portion 84. For example, when the handle lever 81 rotates along... Figure 8 When rotated counterclockwise, the second locking part 84 abuts against the first locking part 83, which can drive the second lever 51 to rotate counterclockwise, thereby causing the locking piece 42 to rotate clockwise, and the locking pin 44 to move out of the locking groove 34, releasing the limiting position of the opposite tongue plate 33.

[0053] The transmission gear 82 is linked to the square tongue plate 33. When the transmission gear 82 rotates, it can drive the square tongue plate 33 to slide, thereby locking or unlocking. For example, in this embodiment, the third lever 61 has several teeth on the side near the transmission gear 82. The transmission gear 82 and the third lever 61 mesh and drive each other. When the transmission gear 82 rotates counterclockwise, it can drive the third lever 61 to rotate clockwise, thereby driving the square tongue plate 33 and the square tongue 31 to move to the left to lock.

[0054] This embodiment provides a scheme to convert the rotation of the transmission gear 82 into the sliding of the square tongue plate 33 through gear meshing. In other embodiments, existing linkage structures such as connecting rods and sliders can also be used to convert the rotation of the transmission gear 82 into the sliding of the square tongue plate 33.

[0055] Furthermore, in this embodiment, a transmission portion 85 extending towards the handle lever 81 is formed on the outer periphery of the transmission tooth 82, and the transmission portion 85 is disposed opposite to the second locking portion 84. When the handle lever 81 rotates counterclockwise, the second locking portion 84 abuts against the transmission portion 85, causing the transmission tooth 82 to rotate accordingly. In practical applications, the handle lever 81 is connected to the handle on the door leaf. Through the aforementioned structures such as the transmission portion 85, the first locking portion 83, and the second locking portion 84, the transmission tooth 82 does not need to be directly connected to the handle, but rotates by means of the handle lever 81. Moreover, after the transmission portion 85 is provided, the transmission tooth 82 can rotate later than the handle lever 81. In other words, during the locking process, after the second lever rotates and releases the locking piece 42 from the limit of the square tongue plate 33, the transmission tooth 82 rotates and drives the square tongue plate 33 to slide outward to achieve locking.

[0056] Furthermore, in this embodiment, an unlocking portion 86 is formed on the outer periphery of the handle 81, and the unlocking portion 86 and the second locking portion 84 are respectively disposed on both sides of the transmission portion 85. Figure 10 As shown, when unlocking is required later, rotating the handle lever 81 clockwise will cause the unlocking part 86 to abut against the side of the transmission part 85, causing the transmission gear 82 to rotate clockwise, which in turn causes the third lever 61 to rotate counterclockwise, driving the square tongue plate 33 to... Figure 10 Slide the square tongue 31 to the right, and it will retract into the lock box 1 to unlock the device.

[0057] It should be noted that the unlocking of the latch assembly is not an innovation of this utility model. There are already many existing technical solutions that move the latch 21 into the lock box 1 by rotating the handle or using a drive motor. Therefore, the linkage between the latch assembly and the jack assembly is not shown in the figure.

[0058] Example 3 According to one embodiment of the present invention, a self-locking mechanism is provided, which is described below in conjunction with... Figure 11 The self-leaning lock will be described using its application on a door as an example. The main difference between this self-leaning lock and the self-leaning lock in Embodiment 2 lies in the composition of the triggering component.

[0059] Specifically, the triggering assembly includes a first lever 41, a locking plate 42, and a third spring 43. The locking plate 42 is rotatably disposed within the lock housing 1. One side of the locking plate 42 has a locking pin 44 that can be embedded in the locking groove 34, and the other side has the first lever 41 rotatably disposed thereon. The rotation path of the locking pin 44 is fixed. When the square tongue 31 retracts into the lock housing 1, the locking groove 34 on the square tongue plate 33 is located on the rotation path of the locking pin 44.

[0060] The middle part of the first lever 41 is rotatably connected to the upper side of the locking plate 42. The side of the first lever 41 near the latch assembly has a lever part 45, and the other side is connected to the third spring 43. The third spring 43 applies a force to the first lever 41, forming a counterclockwise torque on the lever part 45, so that the lever part 45 can rotate counterclockwise in the figure. Then, when the lever part 45 is not subjected to external force, the side of the lever part 45 abuts against the fixing block 23. The force of the third spring 43 also forms a clockwise torque on the locking plate 42. If the square latch 31 is in the lock box 1 at this time, the locking pin 44 will be embedded in the locking groove 34, realizing the limiting and locking of the square latch assembly.

[0061] During the closing process, the latch 21 is pressed into the lock box 1 by the door frame, and the slider 25 moves inward at the same time. The front end of the actuating part 45 moves from the right side of the slider 25 to between the fixed block 23 and the slider 25. At this time, the front end of the actuating part 45 extends into the path of the slider 25 sliding outward under the action of the third spring 43. When the door is closed, the latch 21 moves outward under the action of the first spring 24, and the slider 25 moves outward at the same time. The outer side of the slider 25 abuts against the front end of the actuating part 45, and after overcoming the action of the third spring 43, pushes the actuating part 45 to move outward at the same time, causing the locking plate 42 to rotate counterclockwise. The locking pin 44 on it moves out of the locking groove 34, releasing the limit of the square latch plate 33. The square latch plate 33 drives the square latch 31 to move outward under the action of the second spring 32, realizing the locking. During the entire closing process, the user only needs to move the door leaf and does not need to operate the self-locking mechanism to achieve automatic locking. Furthermore, the self-locking mechanism has a relatively simple structure, fewer parts, is less prone to malfunctions during use, and has a low production cost.

[0062] The handle assembly includes a handle 81 and a transmission gear 82 coaxially rotatable. A second locking portion 84 extending outwards is formed on the outer periphery of the handle 81, and a first locking portion 83 is formed on one side of the locking plate. The second locking portion 84 is disposed opposite to the first locking portion 83. When the handle 81 rotates, the first locking portion 83 is located on the rotation path of the second locking portion 84. For example, when the handle 81 rotates along… Figure 11 When rotated counterclockwise, the second locking part 84 abuts against the first locking part 83, driving the locking piece 42 to rotate counterclockwise, thereby causing the locking pin 44 to move out of the locking groove 34 and releasing the limiting position of the square tongue plate 33. The transmission gear 82 is linked to the square tongue plate 33, and when the transmission gear 82 rotates, it can drive the square tongue plate 33 to slide, thereby realizing locking or unlocking.

[0063] For example, in this embodiment, the third paddle 61 has several teeth on the side near the transmission teeth 82. The transmission teeth 82 mesh with the third paddle 61 for transmission. When the transmission teeth 82 rotate counterclockwise, it can drive the third paddle 61 to rotate clockwise, thereby driving the square tongue plate 33 and the square tongue 31 to move to the left to achieve locking.

[0064] In this embodiment, the self-locking mechanism, through the cooperation of the latch component and the trigger component, allows the user to manually move the latch 31 out via the latch component when the latch 31 fails to pop out automatically, thereby locking the device.

[0065] Furthermore, in this embodiment, a transmission portion 85 extending towards the handle lever 81 is formed on the outer periphery of the transmission tooth 82, and the transmission portion 85 is disposed opposite to the second locking portion 84. When the handle lever 81 rotates counterclockwise, the second locking portion 84 abuts against the transmission portion 85, causing the transmission tooth 82 to rotate accordingly. In practical applications, the handle lever 81 is connected to the handle on the door leaf. Through the aforementioned structures such as the transmission portion 85, the first locking portion 83, and the second locking portion 84, the transmission tooth 82 does not need to be directly connected to the handle, but rotates by means of the handle lever 81. Moreover, after the transmission portion 85 is provided, the transmission tooth 82 can rotate later than the handle lever 81. In other words, during the locking process, after the second lever rotates and releases the locking piece 42 from the limit of the square tongue plate 33, the transmission tooth 82 rotates and drives the square tongue plate 33 to slide outward to achieve locking.

[0066] Furthermore, in this embodiment, an unlocking portion 86 is formed on the outer periphery of the handle 81, and the unlocking portion 86 and the second locking portion 84 are respectively disposed on both sides of the transmission portion 85. Figure 10 As shown, when unlocking is required later, rotating the handle lever 81 clockwise will cause the unlocking part 86 to abut against the side of the transmission part 85, causing the transmission gear 82 to rotate clockwise, which in turn causes the third lever 61 to rotate counterclockwise, driving the square tongue plate 33 to... Figure 10 Slide the square tongue 31 to the right, and it will retract into the lock box 1 to unlock the device.

[0067] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-latching lock characterized in that, This includes the lock box and its internal components: latch assembly, square latch assembly, trigger assembly, and mortise assembly. The latch assembly includes a latch, a first connecting rod, a fixing block, a first spring, and a slider. The fixing block is fixed inside the lock box, the first connecting rod is slidably disposed in the fixing block, the latch and the slider are respectively connected to the two ends of the first connecting rod, the slider is slidably disposed inside the lock box, and the first spring applies an outward force to the latch. The square tongue assembly includes a square tongue, a second spring, and a square tongue plate slidably disposed within the lock box. A locking groove is formed on the side of the square tongue plate, and the second spring applies an outward force to the square tongue plate. The triggering assembly includes a first paddle, a second paddle, a locking plate, and a third spring. The locking plate is rotatably disposed within the lock housing. One side of the locking plate has a locking post that can be embedded in the locking groove, and the other side has the second paddle rotatably disposed thereon. One end of the second paddle abuts against the side of the locking plate, and the other end has the first paddle rotatably disposed thereon. The side of the first paddle near the latch assembly has a toggle part, and the other side is connected to the third spring. The third spring applies a force to the first paddle, causing the side of the toggle part to abut against the fixing block. One side of the second paddle has a first locking part. When the front end of the toggle part is between the slider and the fixing block, the front end of the toggle part extends into the path of the slider sliding outward. The jack assembly includes a handle jack and a transmission gear that are coaxially rotatable. The outer periphery of the handle jack has a second locking part that is opposite to the first locking part. The transmission gear is connected to the square tongue plate.

2. The self-locking mechanism as described in claim 1, characterized in that, An inclined first groove is formed on the square tongue plate; The lock box is rotatably provided with a third paddle, and a first paddle rod is formed on the third paddle that slides in the first slide groove. The third paddle meshes with the transmission gear for transmission. The second spring is a torsion spring, with one end of its torsion arm fixed inside the lock box and the other end abutting against the third lever.

3. The self-locking mechanism as described in claim 2, characterized in that, The outer periphery of the transmission teeth has a transmission portion extending toward the handle / peach side, and the transmission portion is opposite to the second locking portion.

4. The self-locking mechanism as described in claim 3, characterized in that, The outer periphery of the handle is formed with an unlocking part, and the unlocking part and the second locking part are located on both sides of the transmission part.

5. The self-locking mechanism as described in claim 1, characterized in that, The lock box is also equipped with an anti-accidental touch component, which includes: The safety latch is slidably disposed in the latch hole on the side wall of the lock box; The safety linkage is slidably disposed within the lock box and connected to the safety tongue; A safety spring, located inside the lock box, applies a force toward the outside of the lock box to the safety linkage; The safety lever is rotatably mounted inside the lock box, with one end connected to the safety linkage. A safety lever is slidably disposed within the lock housing, with one end connected to the other end of the safety detent and the other end connected to the trigger assembly; wherein... When the safety latch slides outside the lock box, the safety linkage drives the safety lever to rotate, and the safety push rod slides, thereby disengaging the trigger assembly from the latch assembly; when the safety latch slides inside the lock box, the safety push rod slides in the opposite direction, thereby restoring the trigger assembly from the latch assembly.

6. The self-locking mechanism as described in claim 1, characterized in that, The lock box is equipped with a fourth spring, which applies a force to the locking plate, causing the locking pin to be embedded in the locking groove.

7. A self-latching lock characterized in that, This includes the lock box and its internal components: latch assembly, square latch assembly, trigger assembly, and mortise assembly. The latch assembly includes a latch, a first connecting rod, a fixing block, a first spring, and a slider. The fixing block is fixed inside the lock box, the first connecting rod is slidably disposed in the fixing block, the latch and the slider are respectively connected to the two ends of the first connecting rod, the slider is slidably disposed inside the lock box, and the first spring applies an outward force to the latch. The square tongue assembly includes a square tongue, a second spring, and a square tongue plate slidably disposed within the lock box. A locking groove is formed on the side of the square tongue plate, and the second spring applies an outward force to the square tongue plate. The triggering assembly includes a first paddle, a locking plate, and a third spring. The locking plate is rotatably disposed within the lock housing. One side of the locking plate has a locking post that can be embedded in the locking groove, and the other side has the first paddle rotatably disposed thereon. The side of the first paddle near the latch assembly has a prying part, and the other side is connected to the third spring. The third spring applies a force to the first paddle, causing the side of the prying part to abut against the fixing block and causing the locking post to be embedded in the locking groove. A first locking part is formed on one side of the locking plate. The jack assembly includes a handle jack and a transmission gear that are coaxially rotatable. The outer periphery of the handle jack has a second locking part that is opposite to the first locking part. The transmission gear is connected to the square tongue plate.

8. The self-locking mechanism as described in claim 7, characterized in that, An inclined first groove is formed on the square tongue plate; The lock box is rotatably provided with a third paddle, and a first paddle rod is formed on the third paddle that slides in the first slide groove. The third paddle meshes with the transmission gear for transmission. The second spring is a torsion spring, with one end of its torsion arm fixed inside the lock box and the other end abutting against the third lever.

9. The self-locking mechanism as described in claim 8, characterized in that, The outer periphery of the transmission teeth has a transmission portion extending toward the handle / peach side, and the transmission portion is opposite to the second locking portion.

10. The self-locking mechanism as described in claim 9, characterized in that, The outer periphery of the handle is formed with an unlocking part, and the unlocking part and the second locking part are located on both sides of the transmission part.

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