A lock bumping device

Abstract

The present application relates to a lock-striking device, which includes: two lock-striking mechanisms, one of which is a moving end and the other is a receiving end, the receiving end being located on the moving path of the moving end, the lock-striking mechanism including a lock tongue, and the lock-striking device having a release state and a lock state; when the lock-striking device is in the release state, the lock tongue of the moving end is separated from the lock tongue of the receiving end, and when the lock-striking device is in the lock state, the lock tongue of the moving end is locked with the lock tongue of the receiving end, and in the lock tongue height direction, the lock tongue surface of the lock tongue of the moving end partially overlaps with the lock tongue surface of the lock tongue of the receiving end. In the present invention, in the lock tongue height direction, the lock tongue surface of the lock tongue of the moving end and the lock tongue surface of the lock tongue of the receiving end only need to partially overlap to achieve automatic locking of the two lock-striking mechanisms after collision, so that the device has a higher spatial tolerance capability and can reduce the position accuracy requirement of the object to be locked.

Description

Technical Field

[0001] The present application relates to the field of mechanical devices, and in particular to a lock bumping device. Background Art

[0002] In the field of mechanical device technology, collision lock devices are widely used, such as car door collision lock devices, trunk collision lock devices, etc. The collision lock device is generally placed between two colliding objects, and uses the inertia of the objects to lock the two together. The collision lock process is passive and does not require active control; however, existing collision lock devices are mostly used for two objects with accurate motion trajectories and have poor spatial tolerance; existing collision lock devices generally have no buffering or poor buffering effect, and are difficult to adapt to the collision lock needs of objects with large inertia. Summary of the Invention

[0003] The present application provides a locking device, which can solve the problem in the related art that the locking device can only lock and connect two objects when they have an accurate motion trajectory and has poor spatial tolerance.

[0004] The present application provides a lock-striking device, which includes: two lock-striking mechanisms, one of which is a moving end and the other is a receiving end, the receiving end being located on the moving path of the moving end, the lock-striking mechanism including a lock tongue, and the lock-striking device having a released state and a locked state; when the lock-striking device is in the released state, the lock tongue of the moving end is separated from the lock tongue of the receiving end, and when the lock-striking device is in the locked state, the lock tongue of the moving end is locked with the lock tongue of the receiving end, and in the height direction of the lock tongue, the lock tongue surface of the lock tongue of the moving end partially overlaps with the lock tongue surface of the lock tongue of the receiving end.

[0005] In some embodiments, the lock bumping device further comprises: a position-limiting buffer mechanism, which is movably connected to the receiving end. When the lock bumping device is converted from a released state to a locked state, the receiving end moves relative to the position-limiting buffer mechanism.

[0006] In some embodiments, the limiting buffer mechanism includes: a base, a guide rail and a damper, the guide rail is fixed on the base, and the receiving end is slidingly connected to the guide rail; the damper is arranged along the length extension direction of the guide rail, one end of the damper is fixed on the base, and the other end is connected to the receiving end.

[0007] In some embodiments, the limiting buffer mechanism also includes: a slider and a limiting support arm, the slider is slidably connected to the guide rail, the slider is fixed to the receiving end, and connecting blocks are provided on both sides of the slider; the limiting support arm is fixed on the base, one end of the damper is fixed on the limiting support arm, and the other end is connected to the connecting block.

[0008] In some embodiments, the lock-bumping mechanism further includes: a locking arm, a torsion spring, a fixing pin and a compression spring, a cavity being provided inside the locking arm, and the locking tongue being rotatably connected to the inside of the cavity via a hinge; the torsion spring is sleeved on the outer peripheral surface of the hinge, and the torsion spring is connected to the inside of the cavity; the fixing pin is provided inside the cavity, the top end of the fixing pin passes through the top end of the locking arm, and is slidingly connected to the locking arm, and a receiving groove is provided on one side of the fixing pin; one end of the compression spring is connected to the locking arm, and the other end is connected to the fixing pin; wherein, when the lock-bumping device is in a locked state, one end of the locking tongue is located inside the receiving groove, and the top end of the inner wall of the receiving groove is in contact with the top end of the locking tongue.

[0009] In some embodiments, the lock tongue includes: a first lock body, a second lock body and a transition arm, one end of the transition arm is connected to the first lock body, and the other end is connected to the second lock body; wherein, the lock tongue has a first state and a second state; when the lock-bumping device is in a released state, the lock tongue is in the first state, and the top end of the transition arm is in contact with the top end of the inner wall of the accommodating groove; when the lock-bumping device is in a locked state, the lock tongue is in the second state, and the top end of the second lock body is in contact with the top end of the inner wall of the accommodating groove.

[0010] In some embodiments, the height of the transition arm is higher than the height of the second lock body, and the plane where the top end of the transition arm is located is above the plane where the top end of the second lock body is located.

[0011] In some embodiments, the height of the accommodating groove is higher than the height of the transition arm, and when the locking tongue is in the first state or the second state, there is a gap between the bottom end of the locking tongue and the bottom end of the inner wall of the accommodating groove.

[0012] In some embodiments, the lock striking mechanism further includes: a pushing member fixed inside the cavity, and the pushing member is used to drive the fixing pin to move so that the top of the inner wall of the accommodating groove is separated from the top of the lock tongue.

[0013] In some embodiments, the pushing member includes: an electric push rod and a top plate, the electric push rod is fixed inside the cavity; the top plate is fixed to the output shaft of the electric push rod, the top plate is located at the bottom end of the fixing pin, and is used to push the fixing pin to move.

[0014] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0015] An embodiment of the present application provides a lock-bumping device. Since the receiving end is located on the moving path of the moving end, when the two lock-bumping mechanisms are locked, the lock tongue of the moving end moves toward the lock tongue of the receiving end. In the lock tongue height direction, the lock tongue surface of the lock tongue of the moving end and the lock tongue surface of the lock tongue of the receiving end only need to partially overlap, so that the two lock-bumping mechanisms can be automatically locked after the collision, so that the device has a higher spatial tolerance capability and can reduce the position accuracy requirements of the object to be locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the lock bumping mechanism provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the first state structure of the lock tongue provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the second state structure of the lock tongue provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the lock-striking mechanism in a released state according to an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the locking state of the strike lock mechanism provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the lock bumping mechanism provided in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of the lock bumping mechanism provided in an embodiment of the present application;

[0025] Figure 9 A schematic diagram of the lock bumping mechanism provided in an embodiment of the present application;

[0026] Figure 10 This is a schematic diagram of the structure of the limit buffer mechanism provided in an embodiment of the present application.

[0027] In the figure: 1. striker lock mechanism; 11. lock tongue; 110. first lock body; 111. second lock body; 112. transition arm; 12. hinge; 13. fixing pin; 130. receiving groove; 14. compression spring; 15. lock arm; 150. cavity; 16. torsion spring; 17. electric push rod; 18. bolt; 19. top plate;

[0028] 2. Limiting buffer mechanism; 20. Slider; 21. Damper; 22. Limiting support arm; 23. Guide rail; 24. Base. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The embodiment of the present application provides a locking device, which can solve the problem in the related art that the locking device can only lock and connect two objects when they have an accurate motion trajectory and has poor spatial tolerance.

[0031] See also Figures 1 to 10 , an embodiment of the present application provides a lock-bumping device, which includes: two lock-bumping mechanisms 1, one of the two lock-bumping mechanisms 1 is a moving end and the other is a receiving end, the receiving end is located on the moving path of the moving end, the lock-bumping mechanism 1 includes a lock tongue 11, and the lock-bumping device has a released state and a locked state; when the lock-bumping device is in the released state, the lock tongue 11 of the moving end is separated from the lock tongue 11 of the receiving end, and when the lock-bumping device is in the locked state, the lock tongue 11 of the moving end is locked with the lock tongue 11 of the receiving end, and in the height direction of the lock tongue 11, the lock tongue surface of the lock tongue 11 of the moving end partially overlaps with the lock tongue surface of the lock tongue 11 of the receiving end.

[0032] The two striker mechanisms 1 have the same structure. If the lock tongue 11 in one striker mechanism 1 faces right, the lock tongue 11 in the other striker mechanism 1 faces left. If the lock tongue 11 in one striker mechanism 1 faces upward, the lock tongue 11 in the other striker mechanism 1 faces downward. The terms "rightward," "leftward," "upward," and "downward" herein all refer to the direction of the lock tongue 11 relative to the center of the striker mechanism 1. For example, "rightward" means that the lock tongue 11 is located to the right of the center of the striker mechanism 1.

[0033] Among them, the lock tongue surface refers to the surface where one lock tongue 11 fits with the other lock tongue 11; the lock tongue surface of the moving end lock tongue 11 and the lock tongue surface of the receiving end lock tongue 11 partially overlap, which means that when the lock striking device is in the locked state, in the height direction of the lock tongue 11 ( Figure 1 In the Y direction), a portion of the lock tongue surface of the moving end lock tongue 11 is fitted with a portion of the lock tongue surface of the receiving end lock tongue 11, which portion can be half of the lock tongue surface or one-third of the lock tongue surface.

[0034] Therefore, since the receiving end is located on the moving path of the moving end, when the two locking mechanisms 1 are locked, the lock tongue 11 of the moving end moves toward the lock tongue 11 of the receiving end. In the height direction of the lock tongue 11, the lock tongue surface of the lock tongue 11 of the moving end and the lock tongue surface of the lock tongue 11 of the receiving end only need to partially overlap, so that the two locking mechanisms 1 can be automatically locked after the collision, so that the device has a higher spatial tolerance capability and can reduce the position accuracy requirements of the object to be locked.

[0035] On the basis of the above embodiments, in this embodiment, the lock-bumping mechanism 1 also includes: a locking arm 15, a torsion spring 16, a fixing pin 13 and a compression spring 14, a cavity 150 is opened inside the locking arm 15, and the lock tongue 11 is rotatably connected to the inside of the cavity 150 through the hinge 12; the torsion spring 16 is sleeved on the outer peripheral surface of the hinge 12, and the torsion spring 16 is connected to the inside of the cavity 150; the fixing pin 13 is arranged inside the cavity 150, the top of the fixing pin 13 passes through the top of the locking arm 15, and is slidably connected to the locking arm 15, and a accommodating groove 130 is opened on one side of the fixing pin 13; one end of the compression spring 14 is connected to the locking arm 15, and the other end is connected to the fixing pin 13; wherein, when the lock-bumping device is in a locked state, one end of the lock tongue 11 is located inside the accommodating groove 130, and the top of the inner wall of the accommodating groove 130 is in contact with the top of the lock tongue 11.

[0036] In this embodiment, the lock tongue 11 is disposed within the cavity 150. The lock tongue 11 comprises a first lock body 110, a second lock body 111, and a transition arm 112. One end of the transition arm 112 is connected to the first lock body 110 and the other end is connected to the second lock body 111. The first lock body 110 is located outside the lock arm 15, while the second lock body 111 and transition arm 112 are located within the cavity 150. The transition arm 112 has through-holes extending through its top and bottom ends. After the hinge 12 passes through the through-holes, the top and bottom ends of the hinge 12 are hingedly connected to the lock arm 15. A through-slot is defined on the side of the transition arm 112, extending through both sides of the transition arm 112. A torsion spring 16 is sleeved on the outer circumference of the hinge 12. One end of the torsion spring 16 extends out of the through-slot and is secured to the inner wall of the cavity 150. When the lock tongue 11 rotates about the hinge 12, the torsion spring 16 automatically resets the lock tongue 11.

[0037] A connecting hole is formed at the top of the locking arm 15, and a connecting piece is also fixed to the top of the locking arm 15. The connecting piece is located at the top of the connecting hole. The top of the fixing pin 13 passes through the connecting hole, and the middle of the top of the fixing pin 13 is recessed towards the bottom of the fixing pin 13, forming a groove. A column is fixedly connected to the groove, and the column passes through the top of the connecting piece and is slidably connected to the connecting piece. A compression spring 14 is sleeved on the outer surface of the column, with one end of the compression spring 14 fixed to the inner wall of the groove and the other end fixed to the inner wall of the connecting piece.

[0038] Furthermore, the lock tongue 11 has a first state and a second state:

[0039] When the lock bumping device is in the released state, the lock tongue 11 is in the first state, the second lock body 111 is located outside the receiving groove 130, and the top of the transition arm 112 is in contact with the top of the inner wall of the receiving groove 130. Due to the action of the compression spring 14, the inner wall of the receiving groove 130 is in close contact with the top of the transition arm 112, which can prevent the lock tongue 11 from rotating freely.

[0040] When the lock-striking device is in the locked state, the lock tongue 11 is in the second state, the lock tongue 11 rotates, and the second lock body 111 rotates into the inside of the accommodating groove 130. At this time, the top of the second lock body 111 is in contact with the top of the inner wall of the accommodating groove 130. Due to the action of the compression spring 14, the inner wall of the accommodating groove 130 is in close contact with the top of the second lock body 111, which can prevent the lock tongue 11 from rotating at will.

[0041] To ensure the locking effect between the locking tongue 11 at the receiving end and the locking tongue 11 at the moving end, the transition arm 112 is set higher than the second lock body 111, and the plane where the top of the transition arm 112 lies is located above the plane where the top of the second lock body 111 lies. Therefore, when the locking tongue 11 rotates and the second lock body 111 rotates into the receiving groove 130, the fixing pin 13 descends under the action of gravity and the compression spring 14, locking the second lock body 111 and completing the locking.

[0042] In order to facilitate unlocking of the receiving end and the moving end, based on the above embodiment, in this embodiment, the lock mechanism 1 also includes: a pushing member, which is fixed inside the cavity 150 and is used to drive the fixing pin 13 to move so that the top of the inner wall of the accommodating groove 130 is separated from the top of the lock tongue 11.

[0043] When the accommodating groove 130 is located in the middle of the fixing pin 13, that is, the bottom and top ends of the accommodating groove 130 are sealed, one side is open and the other side is sealed, in order to enable the pushing member to push the fixing pin 13 upward, the height of the accommodating groove 130 is set to be higher than the height of the transition arm 112. When the lock tongue 11 is in the first state or the second state, there is a gap between the bottom end of the lock tongue 11 and the bottom end of the inner wall of the accommodating groove 130.

[0044] In this solution, the pushing member includes: an electric push rod 17 and a top plate 19. The electric push rod 17 is fixed inside the cavity 150; the top plate 19 is fixed to the output shaft of the electric push rod 17, is located at the bottom end of the fixed pin 13, and is used to push the fixed pin 13 to move. When the electric push rod 17 is working to push the fixed pin 13, the movement of the output shaft of the electric push rod 17 drives the top plate 19 toward the fixed pin 13 until the top of the lock tongue 11 separates from the top of the inner wall of the receiving groove 130 and the gap between the bottom end of the lock tongue 11 and the bottom end of the inner wall of the receiving groove 130 gradually shortens. When the top end of the lock tongue 11 separates from the top of the inner wall of the receiving groove 130, the lock tongue 11 loses the restraint of the fixed pin 13, and the torsion spring 16 drives the lock tongue 11 to begin rotating around the hinge 12 until the lock tongue 11 returns to its initial position. The second lock body 111 leaves the interior of the receiving groove 130, completing the unlocking.

[0045] When the bottom end of the accommodating groove 130 passes through the bottom end of the fixing pin 13, that is, the bottom end of the accommodating groove 130 is open and the top end is sealed, one side is open and the other side is sealed. At this time, when the transition arm 112 or the second lock body 111 is located inside the accommodating groove 130, the top end of the transition arm 112 or the top end of the second lock body 111 contacts the top end of the inner wall of the fixing pin 13.

[0046] In this solution, the pushing member includes an electric push rod 17, which is fixed within cavity 150 and located on one side of fixed pin 13. The output shaft of electric push rod 17 is also fixed to one side of fixed pin 13. When electric push rod 17 pushes fixed pin 13, the top of lock tongue 11 separates from the top of the inner wall of accommodating groove 130. When the top of lock tongue 11 separates from the top of the inner wall of accommodating groove 130, lock tongue 11 loses the restraint of fixed pin 13, and torsion spring 16 drives lock tongue 11 to begin rotating about hinge 12 until lock tongue 11 returns to its initial position. The second lock body 111 then leaves the interior of accommodating groove 130, completing the unlocking process.

[0047] On the basis of the above embodiment, in this embodiment, the lock-bumping device further includes: a limit buffer mechanism 2, which is movably connected to the receiving end. When the lock-bumping device is converted from a released state to a locked state, the receiving end moves relative to the limit buffer mechanism 2.

[0048] Connecting the receiving end to the limiting buffer mechanism 2 can achieve limiting and buffering of the collision locking process between the moving end and the receiving end, so that the device can be suitable for application scenarios with large inertia.

[0049] Specifically, the limit buffer mechanism 2 includes: a base 24, a guide rail 23 and a damper 21, the guide rail 23 is fixed on the base 24, and the receiving end is slidably connected to the guide rail 23; the damper 21 extends along the length of the guide rail 23 ( Figure 1 One end of the damper 21 is fixed on the base 24, and the other end is connected to the receiving end.

[0050] The receiving end is mounted on the guide rail 23 and slidably connected thereto. When the striker lock device transitions from the released state to the locked state, the receiving end slides on the guide rail 23 after receiving the impact from the moving end. To reduce the impact of the locking process, dampers 21 are provided to provide cushioning. The dampers 21 are provided on both sides of the guide rail 23. The dampers 21 can be viscous dampers 21, spring dampers 21, hydraulic dampers 21, etc. In this embodiment, hydraulic dampers 21 are preferred.

[0051] Furthermore, the limiting buffer mechanism 2 also includes: a slider 20 and a limiting support arm 22, the slider 20 is slidably connected to the guide rail 23, the slider 20 is fixed to the receiving end, and connecting blocks are provided on both sides of the slider 20; the limiting support arm 22 is fixed on the base 24, one end of the damper 21 is fixed on the limiting support arm 22, and the other end is connected to the connecting block.

[0052] The slider 20 slides on the guide rail 23. One end of the slider 20 is fixedly connected to a fixed block. Threaded holes are opened on the fixed block and the locking arm 15 at the receiving end. When the fixed block is extended into the cavity 150, the threaded hole on the fixed block corresponds to the threaded hole on the locking arm 15. Then, the threaded hole is penetrated by the bolt 18 to connect the fixed block to the locking arm 15 at the receiving end.

[0053] Both sides of the guide rail 23 are fixedly connected to the limiting support arms 22, and two limiting support arms 22 are provided on each side. The damper 21 is arranged between the two limiting support arms 22, and one end of the damper 21 is fixed to one of the limiting support arms 22. The connecting block fixed on the slider 20 is also located between the two limiting support arms 22. Therefore, the other end of the damper 21 is connected to the connecting block, and the connecting block is movably connected to the other limiting support arm 22. By respectively providing a limiting support arm 22 at both ends of the damper 21 and the connecting block, the slider 20 can be prevented from sliding out of the guide rail 23.

[0054] In summary, if Figure 5 As shown, in the released state, the moving end and the receiving end are separated from each other, and due to the action of the torsion spring 16, the lock tongue 11 can be kept open to the maximum state.

[0055] like Figure 6 As shown, in the locked state, the lock tongue 11 at the moving end and the lock tongue 11 at the receiving end are pressed against each other, the second lock body 111 moves into the accommodating groove 130, and the fixing pin 13 descends to fit with the second lock body 111 to complete the locking position.

[0056] In order to reduce the impact of the locking process, buffering is achieved through the dovetail groove linear guide 23 and the hydraulic dampers 21 on both sides. There is a limit support arm 22 in front and behind the hydraulic damper to prevent the slider 20 from sliding out of the guide rail 23.

[0057] The locking process is as follows: First, the front end of the lock tongue 11 at the moving end strikes the lock tongue 11 at the receiving end. Then, under this impact, the two lock tongues 11 rotate about their respective hinges 12 until the fixed pin 13 descends under the action of gravity and the compression spring 14, locking the second lock body 111 within the receiving groove 130. During this process, locking is achieved as long as the lock tongue 11 at the moving end partially enters the opening of the lock arm 15 at the receiving end. Therefore, the reasonable design of the dimensions of the lock tongue 11 and the lock arm 15 can ensure a certain tolerance in the relative position of the moving end and the receiving end during locking.

[0058] The release process is as follows: First, the fixing pin 13 is lifted up to separate from the top of the lock tongue 11 under the action of the electric push rod 17, and the two lock tongues 11 rotate around the hinge 12 under the action of the torsion spring 16 until they are separated from each other, completing the release.

[0059] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0060] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0061] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A lock bumping device, characterized in that: It includes: Two strike lock mechanisms (1), one of the two strike lock mechanisms (1) being a moving end and the other being a receiving end, the receiving end being located on a moving path of the moving end, the strike lock mechanism (1) comprising a lock tongue (11), and the strike lock device having a released state and a locked state; When the strike lock device is in a released state, the lock tongue (11) at the moving end is separated from the lock tongue (11) at the receiving end; when the strike lock device is in a locked state, the lock tongue (11) at the moving end is locked with the lock tongue (11) at the receiving end, and in the height direction of the lock tongue (11), the lock tongue surface of the lock tongue (11) at the moving end partially overlaps with the lock tongue surface of the lock tongue (11) at the receiving end; The lock bumping device further comprises: A position limiting buffer mechanism (2), the position limiting buffer mechanism (2) being movably connected to the receiving end, and when the strike lock device is switched from a released state to a locked state, the receiving end moves relative to the position limiting buffer mechanism (2); The lock striking mechanism (1) further comprises: A locking arm (15), wherein a cavity (150) is formed inside the locking arm (15), and the locking tongue (11) is rotatably connected to the inside of the cavity (150) via a hinge (12); a torsion spring (16), wherein the torsion spring (16) is sleeved on the outer peripheral surface of the hinge (12), and the torsion spring (16) is connected to the interior of the cavity (150); A fixing pin (13), the fixing pin (13) is disposed inside the cavity (150), the top end of the fixing pin (13) passes through the top end of the locking arm (15) and is slidably connected to the locking arm (15), and a receiving groove (130) is provided on one side of the fixing pin (13); A compression spring (14), one end of the compression spring (14) is connected to the locking arm (15), and the other end is connected to the fixing pin (13); When the lock striking device is in a locked state, one end of the lock tongue (11) is located inside the accommodating groove (130), and the top end of the inner wall of the accommodating groove (130) is in contact with the top end of the lock tongue (11).

2. The lock bumping device according to claim 1, wherein: The position limiting buffer mechanism (2) comprises: base (24); A guide rail (23), wherein the guide rail (23) is fixed on a base (24), and the receiving end is slidably connected to the guide rail (23); A damper (21) is provided along the length extension direction of the guide rail (23), one end of the damper (21) is fixed on the base (24), and the other end is connected to the receiving end.

3. The lock bumping device according to claim 2, wherein: The position limiting buffer mechanism (2) further comprises: A slider (20), the slider (20) is slidably connected to the guide rail (23), the slider (20) is fixed to the receiving end, and connecting blocks are provided on both sides of the slider (20); A position-limiting support arm (22) is fixed on a base (24); one end of the damper (21) is fixed on the position-limiting support arm (22), and the other end is connected to a connecting block.

4. The lock bumping device according to claim 1, wherein: The lock tongue (11) comprises: a first lock body (110); A second lock body (111); a transition arm (112), one end of the transition arm (112) being connected to the first lock body (110), and the other end being connected to the second lock body (111); Wherein, the lock tongue (11) has a first state and a second state; When the lock striking device is in a released state, the lock tongue (11) is in a first state, and the top end of the transition arm (112) is in contact with the top end of the inner wall of the accommodating groove (130); When the lock striking device is in a locked state, the lock tongue (11) is in a second state, and the top end of the second lock body (111) is in contact with the top end of the inner wall of the accommodating groove (130).

5. The lock bumping device according to claim 4, wherein: The height of the transition arm (112) is higher than the height of the second lock body (111), and the plane where the top end of the transition arm (112) is located is above the plane where the top end of the second lock body (111) is located.

6. The lock bumping device according to claim 4, wherein: The height of the accommodating groove (130) is higher than the height of the transition arm (112); when the locking tongue (11) is in the first state or the second state, there is a gap between the bottom end of the locking tongue (11) and the bottom end of the inner wall of the accommodating groove (130).

7. The lock bumping device according to claim 1, wherein: The lock striking mechanism (1) further comprises: A push piece is fixed inside the cavity (150) and is used to drive the fixing pin (13) to move so as to separate the top of the inner wall of the accommodating groove (130) from the top of the locking tongue (11).

8. The lock bumping device according to claim 7, wherein: The pushing member comprises: An electric push rod (17), wherein the electric push rod (17) is fixed inside the cavity (150); A top plate (19) is fixed to the output shaft of the electric push rod (17), and the top plate (19) is located at the bottom end of the fixing pin (13) and is used to push the fixing pin (13) to move.

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