A cushioning and rebound locking device

Abstract

A kind of buffer rebound locking device, including fixed block and movable block, movable block is slidably connected with fixed block, fixed block is equipped with frame body, further include buffer sliding block, rebound sliding block, hanging pin, hanging nail, first elastic element, second elastic element, frame body is equipped with first sliding slot and second sliding slot, hanging pin is equipped with first shaft body and second shaft body, hanging nail is equipped with third shaft body and fourth shaft body, the end of second sliding slot is equipped with locking position and first avoiding position, the beginning of second sliding slot is equipped with second avoiding position, movable block is equipped with push block and buffer hook.The buffer rebound locking device of the present application can realize the automatic pop-out of movable block after being pressed when movable block and fixed block are closed, when being applied to drawer, drawer will automatically pop out after being pressed again when drawer is closed, drawer does not need to be provided with handle, so that the appearance of drawer is more beautiful, the buffer rebound locking device is simple in structure, the parts used are less, the processing technology can be simplified, the cost is saved, and the performance is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to a buffer bounce locking device. BACKGROUND

[0002] The outer side of the conventional drawer is generally provided with a handle, and the drawer is pulled out through the handle, but the handle will affect the appearance of the drawer. In view of this problem, a device for achieving bounce self-locking buffering by pressing is disclosed in Chinese patent document No. CN211961454U on November 20, 2020, which comprises a bounce self-locking main frame, a self-locking slider, a bounce slider, a bounce reset starting mechanism, a self-locking starting fork, a bounce swing hook, a self-locking hook, a bounce self-locking shifting lever, a self-locking spring, a bounce spring and an automatic extension oil cylinder. When the drawer is in a closed state, the user lightly presses the drawer panel with his hand, and the drawer will move slightly forward by about 33.5mm at this time, because the bounce reset starting mechanism fixed in the bounce self-locking starting mechanism touches the bounce swing hook, the bounce swing hook is separated from the limiting clamping port of the through slot, and under the action of the bounce spring, the bounce slider is forced to freely pop out, the bounce slider pushes the self-locking slider to pop out at the same time, the self-locking hook in the self-locking slider hooks the self-locking starting fork in the bounce self-locking shifting lever to force the drawer to freely pop out at the same time, when the self-locking hook pops out to the limit position in the "L" shaped guide slot in the self-locking main frame, the self-locking hook is separated from the self-locking starting fork, the self-locking hook stops moving, the bounce self-locking shifting lever and the drawer will continue to freely pop out under the action of inertia, realizing the bounce function of the present application, and the drawer can be completely freely opened. This structure can realize automatic pop-out of the drawer when the drawer is closed by lightly pressing the drawer panel with the hand, and does not need a handle, so that the appearance of the drawer is more beautiful, but the device for achieving bounce self-locking buffering by pressing has a relatively complex structure and involves many parts, so the manufacturing cost is relatively high, and the performance stability of the device is general.

[0003] Therefore, it is necessary to make further improvement. SUMMARY

[0004] The object of the present application is to provide a buffer bounce locking device with simple structure, long service life, smooth operation, low manufacturing cost, stable performance, low noise and strong practicality, so as to overcome the shortcomings in the prior art.

[0005] A buffer rebound locking device designed for the purpose comprises a fixed block and a movable block, the movable block is in sliding connection with the fixed block, the fixed block is provided with a frame, characterized in that: further comprising a buffer slider, a rebound slider, a hanging pin, a hanging nail, a first elastic member, a second elastic member, the buffer slider and the rebound slider are in sliding arrangement on the frame, the hanging pin is in rotational connection with the buffer slider, the hanging nail is in rotational connection with the rebound slider, the buffer slider and the rebound slider are connected through the first elastic member, the rebound slider and the frame are connected through the second elastic member, the frame is provided with a first sliding groove and a second sliding groove, the hanging pin is provided with a first shaft body and a second shaft body, the hanging nail is provided with a third shaft body and a fourth shaft body, the hanging pin is in sliding arrangement on the first sliding groove through the second shaft body, the hanging nail is in sliding arrangement on the second sliding groove through the fourth shaft body, the end of the second sliding groove is provided with a locking position and a first avoiding position, the beginning of the second sliding groove is provided with a second avoiding position, the movable block is provided with a push block and a buffer hook; the front end of the buffer slider is provided with a pushing part.

[0006] When the fixed block and the movable block are closed, the front end of the push block on the movable block acts on the third shaft body to make the hanging nail slide on the second sliding groove through the fourth shaft body, and drive the rebound slider to slide on the frame, the fourth shaft body slides into the locking position through the first avoiding position along the second sliding groove, so as to make the third shaft body avoid the push block, the push block continues to move forward beyond the hanging nail, the bottom of the buffer hook on the movable block acts on the first shaft body, so as to make the hanging pin slide on the first sliding groove through the second shaft body, and drive the buffer slider to slide on the frame, so as to make the buffer slider close to the rebound slider; when the fixed block and the movable block are opened, the movable block drives the buffer slider to continue to move forward, the pushing part acts on the third shaft body, so as to make the fourth shaft body slide back from the locking position to the first avoiding position, to unlock the rebound slider, the buffer slider and the rebound slider are close to each other, under the elastic force of the second elastic member, the buffer slider and the rebound slider retreat, so as to make the second shaft body return to the beginning of the first sliding groove, and the fourth shaft body return to the end of the second sliding groove, when the buffer slider retreats, the hanging pin acts on the buffer hook, so as to make the movable block retreat, after the movable block retreats for a distance, the rear end of the push block acts on the third shaft body, so as to make the fourth shaft body slide into the second avoiding position, and make the third shaft body avoid the push block, the push block continues to retreat beyond the hanging nail, the movable block continues to retreat to be completely popped out, after the push block retreats beyond the hanging nail, the fourth shaft body slides back from the second avoiding position to the beginning of the second sliding groove.

[0007] The first sliding groove comprises a curved area and a linear sliding area, the curved area is arranged at the beginning of the first sliding groove, the buffer slider is provided with a first arc-shaped area, the first shaft body slides on the first arc-shaped area when the second shaft body slides on the curved area.

[0008] The second sliding groove comprises a slide, the second avoiding position is arranged at the beginning of the slide, the first avoiding position and the locking position are arranged at the end of the slide, the slide and the second avoiding position, the first avoiding position and the locking position are connected through a curved segment, the rebound slider is provided with a second arc-shaped area, the third shaft body slides on the second arc-shaped area when the fourth shaft body slides on the curved segment.

[0009] The front end of the pushing part is provided with a first inclined part, when the fixed block and the movable block are opened, the movable block drives the buffer sliding block to continue to advance, the pushing part acts on the third shaft body through the first inclined part, so that the fourth shaft body slides back along the first inclined part from the locking position to the first avoiding position.

[0010] The bottom of the buffer hook is provided with a sliding groove, the sliding groove is provided with a triggering end and a pushing end, when the fixed block and the movable block are closed, the triggering end acts on the first shaft body, so that the second shaft body slides along the curved area, the first shaft body slides on the sliding groove while the second shaft body slides along the curved area, when the second shaft body slides to the end of the curved area, the pushing end acts on the first shaft body, so that the second shaft body slides along the linear sliding area.

[0011] Further comprising a third elastic member, one end of the third elastic member is elastically connected with the hook, and the other end is elastically connected with the rebound sliding block, when the fourth shaft body slides into the second avoiding position, the third elastic member elastically acts on the hook, after the pushing block passes the hook, the fourth shaft body slides back from the second avoiding position to the beginning of the sliding groove.

[0012] Further comprising a damper, the damper is arranged on the rebound sliding block, and comprises a cylinder body and a piston rod, one end of the piston rod is arranged in the cylinder body, the other end of the piston rod extends out of the cylinder body and is connected with the buffer sliding block, when the buffer sliding block and the rebound sliding block move relative to each other, the piston rod does the extension and retraction movement in the cylinder body, so as to realize the damping effect.

[0013] The bottom of the buffer sliding block is provided with a fifth shaft body, the hook pin is provided with a first shaft hole, the fifth shaft body is rotatably connected with the first shaft hole, the top of the hook is provided with a sixth shaft body, the rebound sliding block is provided with a second shaft hole, and the sixth shaft body is rotatably connected with the second shaft hole.

[0014] The frame body is provided with a first guide edge and a second guide edge, the buffer sliding block slides along the first guide edge, and the rebound sliding block slides along the second guide edge.

[0015] The first elastic member is a tension spring, the second elastic member is a compression spring, and the third elastic member is a torsion spring.

[0016] The buffer rebound locking device of the application presses the movable block after the fixed block and the movable block are closed in buffer, the buffer sliding block can shovel the hanging nail, the unlocking of the rebound sliding block is realized, at this time, the rebound sliding block and the buffer sliding block are rebounded out under the elastic force of the compression spring, the automatic ejection of the movable block is realized, the buffer rebound locking device can be applied to the products such as drawers, sliding doors, cars and toilets, when applied to the drawer, the drawer is automatically ejected by the buffer rebound self-locking device after the drawer is pressed again after being closed, the drawer does not need to be provided with a handle, so that the appearance of the drawer is more beautiful, when the fixed block and the movable block are closed, the hanging nail is locked on the locking position of the frame sliding groove, so that the rebound sliding block cannot be ejected by the spring, the movable block is not ejected, the performance is stable, the noise is small during the rebounding, the user experience is improved, the buffer rebound locking device only involves the sliding block, the hanging pin, the hanging nail and the spring, the structure is simple, the number of parts is small, the processing technology is greatly simplified, so that the manufacturing cost can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figures 1-4 It is a variation process schematic view of the buffer closing of the movable block and the fixed block in an embodiment of the application.

[0018] Figures 5-8 It is a variation process schematic view of the buffer opening of the movable block and the fixed block in an embodiment of the application.

[0019] Figure 9 It is a top view of the fixed block in an embodiment of the application.

[0020] Figure 10 It is a top view of the movable block in an embodiment of the application.

[0021] Figure 11 It is a top view of the frame in an embodiment of the application.

[0022] Figure 12 It is a schematic view of the overall structure of the frame in an embodiment of the application.

[0023] Figure 13 It is a top view of the rebound sliding block in an embodiment of the application.

[0024] Figure 14 It is a schematic view of the overall structure of the rebound sliding block in an embodiment of the application.

[0025] Figure 15 It is a top view of the buffer sliding block in an embodiment of the application.

[0026] Figure 16 It is a schematic view of the overall structure of the buffer sliding block in an embodiment of the application.

[0027] Figure 17A top view of the buffer hook in an embodiment of the present application.

[0028] Figure 18 A schematic diagram of the overall structure of the buffer hook in an embodiment of the present application.

[0029] Figure 19 A top view of the push block in an embodiment of the present application.

[0030] Figure 20 A schematic diagram of the overall structure of the push block in an embodiment of the present application.

[0031] Figure 21 A top view of the hanging nail in an embodiment of the present application.

[0032] Figure 22 A side view of the hanging nail in an embodiment of the present application.

[0033] Figure 23 A side view of the hanging pin in an embodiment of the present application.

[0034] Figure 24 A top view of the hanging pin in an embodiment of the present application.

[0035] Figure 25 A side view of the torsion spring in an embodiment of the present application.

[0036] Figure 26 A schematic diagram of the overall structure of the torsion spring in an embodiment of the present application.

[0037] Figure 27 A side view of the damper in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0039] Reference Signs List Figures 1-27The application relates to a buffer rebound locking device applied to a drawer, which comprises a fixed slide rail 1 and a movable slide rail 2, the fixed slide rail 1 is fixed on a drawer side plate, the movable slide rail 2 is slidably connected with the fixed slide rail 1, a frame body 3 is arranged on the fixed slide rail 1, and the buffer sliding block 4, the rebound sliding block 5, the hanging pin 6, the hanging nail 7, the first elastic member 8 and the second elastic member 9 are arranged on the frame body 3, the buffer sliding block 4 and the rebound sliding block 5 are slidably arranged on the frame body 3, the hanging pin 6 is rotationally connected with the buffer sliding block 4, the hanging nail 7 is rotationally connected with the rebound sliding block 5, the buffer sliding block 4 is connected with the rebound sliding block 5 through the first elastic member 8, the rebound sliding block 5 is connected with the frame body 3 through the second elastic member 9, the frame body 3 is provided with a first sliding groove 3.1 and a second sliding groove 3.2, the hanging pin 6 is provided with a first shaft body 6.1 and a second shaft body 6.2, the hanging nail 7 is provided with a third shaft body 7.1 and a fourth shaft body 7.2, the hanging pin 6 is slidably arranged on the first sliding groove 3.1 through the second shaft body 6.2, the hanging nail 7 is slidably arranged on the second sliding groove 3.2 through the fourth shaft body 7.2, the end of the second sliding groove 3.2 is provided with a locking position 3.2.1 and a first avoiding position 3.2.2, the beginning of the second sliding groove 3.2 is provided with a second avoiding position 3.2.3, the movable slide rail 2 is provided with a push block 10 and a buffer hook 11, and the front end of the buffer sliding block 4 is provided with a pushing part 4.3.

[0040] The first sliding groove 3.1 comprises a curved area 3.1.1 and a linear sliding area 3.1.2, the curved area 3.1.1 is arranged at the beginning of the first sliding groove 3.1, the buffer sliding block 4 is provided with a first arc-shaped area 4.1, and the first shaft body 6.1 slides on the first arc-shaped area 4.1 when the second shaft body 6.2 slides on the curved area 3.1.1.

[0041] The second sliding groove 3.2 comprises a sliding channel 3.2.4, the second avoiding position 3.2.3 is arranged at the beginning of the sliding channel 3.2.4, the first avoiding position 3.2.2 and the locking position 3.2.1 are arranged at the end of the sliding channel 3.2.4, the sliding channel 3.2.4 and the second avoiding position 3.2.3, the first avoiding position 3.2.2 and the locking position 3.2.1 are connected through a curved segment, the rebound sliding block 5 is provided with a second arc-shaped area 5.1, and the third shaft body 7.1 slides on the second arc-shaped area 5.1 when the fourth shaft body 7.2 slides on the curved segment.

[0042] The front end of the pushing part 4.3 is provided with a first inclined part 4.4, when the drawer is opened, the movable slide rail 2 drives the buffer sliding block 4 to continuously advance, the pushing part 4.3 acts on the third shaft body 7.1 through the first inclined part 4.4, so that the fourth shaft body 7.2 slides back from the locking position 3.2.1 to the first avoiding position 3.2.2 along the first inclined part 4.4, the hanging nail 7 is unlocked, and the rebound sliding block 5 is unlocked.

[0043] The bottom of the buffer hook 11 is provided with a sliding groove 11.1, and the sliding groove 11.1 is provided with a triggering end 11.2 and a pushing end 11.3. When the drawer is closed, the triggering end 11.2 acts on the first shaft body 6.1, so that the second shaft body 6.2 slides along the curved area 3.1.1. At the same time, the first shaft body 6.1 slides on the sliding groove 11.1. When the second shaft body 6.2 slides to the end of the curved area 3.1.1, the pushing end 11.3 acts on the first shaft body 6.1, so that the second shaft body 6.2 slides along the linear sliding area 3.1.2.

[0044] The front end of the push block 10 is provided with a second inclined part 10.1, and the rear end is provided with a third inclined part 10.2. When the drawer is closed, the second inclined part 10.1 acts on the third shaft body 7.1, so that the hook 7 slides on the slide 3.2.4 through the fourth shaft body 7.2. When the fourth shaft body 7.2 slides to the first avoiding position 3.2.2, the fourth shaft body 7.2 slides into the locking position 3.2.1 along the first inclined part 10.1. When the drawer is opened, after the fourth shaft body 7.2 slides to the beginning of the slide 3.2.4, the fourth shaft body 7.2 slides into the second avoiding position 3.2.3 along the second inclined part 10.2.

[0045] Further comprising a third elastic member 12, one end of the third elastic member 12 is elastically connected with the hook 7, and the other end is elastically connected with the rebounding sliding block 5. When the fourth shaft body 7.2 slides into the second avoiding position 3.2.3, the third elastic member 12 elastically acts on the hook 7. After the push block 10 passes the hook 7, the fourth shaft body 7.2 slides back from the second avoiding position 3.2.3 to the beginning of the slide 3.2.4.

[0046] Further comprising a damper 13, the damper 13 is arranged on the rebounding sliding block 5, and comprises a cylinder body 13.1 and a piston rod 13.2. One end of the piston rod 13.2 is arranged in the cylinder body 13.1, and the other end extends out of the cylinder body 13.1 and is connected with the buffer sliding block 4. When the buffer sliding block 4 and the rebounding sliding block 5 move relative to each other, the piston rod 13.2 makes extension and retraction movement in the cylinder body 13.1 to achieve damping effect, so as to prevent the buffer sliding block 4 from colliding with the rebounding sliding block 5 with great force when the buffer sliding block 4 contacts the rebounding sliding block 5, thereby preventing damage to the sliding block. The damper 13 is fixed on the rebounding sliding block 5 instead of being fixed on the fixed sliding rail 1. When the rebounding sliding block 5 and the buffer sliding block 4 are ejected, the damper 13 runs synchronously with the buffer sliding block 4, which avoids the loss caused by pulling out the damper when ejected, so that the movable sliding rail 2 can be ejected farther, and the internal structure of the damper 13 is also simplified.

[0047] The bottom of the buffer sliding block 4 is provided with a fifth shaft body 4.2, the hook pin 6 is provided with a first shaft hole 6.3, the fifth shaft body 4.2 is rotationally connected with the first shaft hole 6.3, the top of the hook 7 is provided with a sixth shaft body 7.3, and the rebounding sliding block 5 is provided with a second shaft hole 5.2. The sixth shaft body 7.3 is rotationally connected with the second shaft hole 5.2.

[0048] The frame 3 is provided with a first guide edge 3.3 and a second guide edge 3.4, the buffer slide 4 slides along the first guide edge 3.3, and the rebound slide 5 slides along the second guide edge 3.4.

[0049] The first elastic member 8 is a tension spring, the second elastic member 9 is a compression spring, and the third elastic member 12 is a torsion spring. When the rebound slide 5 advances, the rebound slide 5 can pull the buffer slide 4 forward through the tension spring, so that when the drawer is closed, the movable slide rail 2 continues to move forward for a distance even if the hand is released, so that when the fourth shaft body 7.2 is clamped on the locking position 3.2.1, the drawer can be closed to the bottom even if the hand is released at this time.

[0050] When the drawer is closed, the movable slide rail 2 drives the push block 10 to advance, the second inclined portion 10.1 acts on the third shaft body 7.1 to make the hook 7 slide on the slide 3.2.4 through the fourth shaft body 7.2, and drive the rebound slide 5 to slide on the frame 3, when the fourth shaft body 7.2 slides to the first avoiding position 3.2.2 along the slide 3.2.4, it slides into the locking position 3.2.1 along the second inclined portion 10.1, (to lock the rebound slide 5, at this time the rebound slide 5 cannot move), so that the third shaft body 7.1 avoids the push block 10, the push block 10 continues to advance beyond the hook 7, at this time the trigger end 11.2 at the bottom of the buffer hook 11 acts on the first shaft body 6.1 to make the catch 6 slide on the curved area 3.1.1 through the second shaft body 6.2, and drive the buffer slide 4 to slide on the frame 3, when the second shaft body 6.2 slides to the end of the curved area 3.1.1, the pushing end 11.3 acts on the first shaft body 6.1 to make the catch 6 slide on the linear sliding area 3.1.2 through the second shaft body 6.2, so that the buffer slide 4 approaches the rebound slide 5, at this time the drawer is completely closed.

[0051] When the drawer is opened, the drawer is pressed by hand, the sliding rail 2 drives the buffer slider 4 to continue advancing, after the buffer slider 4 advances 4mm, the pushing part 4.3 acts on the third shaft body 7.1 through the first inclined part 4.4, so that the fourth shaft body 7.2 slides along the first inclined part 4.4 from the locking position 3.2.1 to the first avoiding position 3.2.2, so as to unlock the rebound slider 5, the buffer slider 4 and the rebound slider 5 are in close contact with each other, under the elastic force of the compression spring, the buffer slider 4 and the rebound slider 5 retreat, so that the second shaft body 6.2 returns to the first sliding groove 3.1 starting end along the linear sliding area 3.1.2 and the curved area 3.1.1, the fourth shaft body 7.2 returns to the second sliding groove 3.2 starting end along the slide 3.2.4, when the buffer slider 4 retreats, the first shaft body 6.1 of the hanging pin 6 acts on the pushing end 11.3 of the buffer hook 11, so that the sliding rail 2 retreats, after the sliding rail 2 retreats a distance, the pushing block 10 acts on the third shaft body 7.1 through the third inclined part 10.2 at the rear end of the pushing block 10, so that the fourth shaft body 7.2 slides along the third inclined part 10.2 into the second avoiding position 3.2.3, and the third shaft body 7.1 avoids the pushing block 10, the pushing block 10 passes the hanging nail 7 (at this time, under the action of the torsional spring, the hanging nail 7 rotates back to the position, so that the fourth shaft body 7.2 slides from the second avoiding position 3.2.3 to the second sliding groove 3.2 starting end), the sliding rail 2 continues to retreat (at this time, the drawer has been pulled out a distance), at this time, the drawer can be completely pulled out by pulling the drawer with hand.

[0052] The above is the preferred scheme of the present application, which shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A buffer rebound locking device, comprising a fixed block (1) and a movable block (2), the movable block (2) being in sliding connection with the fixed block (1), and a frame (3) being arranged on the fixed block (1), characterized in that: Also include buffer slider (4), rebound slider (5), hanging pin (6), hanging nail (7), first elastic member (8), second elastic member (9), buffer slider (4) and rebound slider (5) are slidably arranged on the frame (3), the hanging pin (6) is rotatably connected with the buffer slider (4), the hanging nail (7) is rotatably connected with the rebound slider (5), the buffer slider (4) and the rebound slider (5) are connected through the first elastic member (8), the rebound slider (5) and the frame (3) are connected through the second elastic member (9), the frame (3) is provided with first sliding slot (3.1) and second sliding slot (3.2), the hanging pin (6) is provided with first shaft body (6.1) and second shaft body (6.2), the hanging nail (7) is provided with third shaft body (7.1) and fourth shaft body (7.2), the hanging pin (6) is slidably arranged on the first sliding slot (3.1) through the second shaft body (6.2), the hanging nail (7) is slidably arranged on the second sliding slot (3.2) through the fourth shaft body (7.2), the end of the second sliding slot (3.2) is provided with locking position (3.2.1) and first avoiding position (3.2.2), the beginning of the second sliding slot (3.2) is provided with second avoiding position (3.2.3), the movable block (2) is provided with push block (10) and buffer hook (11), the front end of the buffer slider (4) is provided with push part (4.3) When the fixed block (1) and the movable block (2) are closed, the front end of the push block (10) on the movable block (2) acts on the third shaft body (7.1) to make the hook (7) slide on the second sliding groove (3.2) through the fourth shaft body (7.2) and drive the rebounding sliding block (5) to slide on the frame body (3), the fourth shaft body (7.2) slides into the locking position (3.2.1) along the second sliding groove (3.2) through the first avoiding position (3.2.2) to make the third shaft body (7.1) avoid the push block (10), the push block (10) continues to advance beyond the hook (7), the bottom of the buffer hook (11) on the movable block (2) acts on the first shaft body (6.1) to make the hook pin (6) slide on the first sliding groove (3.1) through the second shaft body (6.2) and drive the buffer sliding block (4) to slide on the frame body (3) to make the buffer sliding block (4) close to the rebounding sliding block (5); when the fixed block (1) and the movable block (2) are opened, the movable block (2) drives the buffer sliding block (4) to continue to advance, the pushing part (4.3) acts on the third shaft body (7.1) to make the fourth shaft body (7.2) slide back from the locking position (3.2.1) to the first avoiding position (3.2.2) to unlock the rebounding sliding block (5), the buffer sliding block (4) and the rebounding sliding block (5) are in close contact with each other, under the elastic force of the second elastic member (9), the buffer sliding block (4) and the rebounding sliding block (5) retreat to make the second shaft body (6.2) return to the beginning of the first sliding groove (3.1) and the fourth shaft body (7.2) return to the beginning of the second sliding groove (3.2), when the buffer sliding block (4) retreats, the hook pin (6) acts on the buffer hook (11) to make the movable block (2) retreat, after the movable block (2) retreats for a distance, the rear end of the push block (10) acts on the third shaft body (7.1) to make the fourth shaft body (7.2) slide into the second avoiding position (3.2.3) and make the third shaft body (7.1) avoid the push block (10), the push block (10) continues to retreat beyond the hook (7), the movable block (2) continues to retreat to be completely popped out, after the push block (10) retreats beyond the hook (7), the fourth shaft body (7.2) slides from the second avoiding position (3.2.3) to the beginning of the second sliding groove (3.2).

2. The bumper rebound lock apparatus of claim 1, wherein: The first sliding groove (3.1) comprises a curved area (3.1.1) and a linear sliding area (3.1.2), the curved area (3.1.1) is arranged at the beginning of the first sliding groove (3.1), the buffer sliding block (4) is provided with a first arc-shaped area (4.1), when the second shaft body (6.2) slides on the curved area (3.1.1), the first shaft body (6.1) slides on the first arc-shaped area (4.1).

3. The bumper rebound lock apparatus of claim 2, wherein: The second sliding groove (3.2) comprises a sliding track (3.2.4), the second avoiding position (3.2.3) is arranged at the beginning of the sliding track (3.2.4), the first avoiding position (3.2.2) and the locking position (3.2.1) are arranged at the end of the sliding track (3.2.4), the sliding track (3.2.4) is connected with the second avoiding position (3.2.3) and the first avoiding position (3.2.2) and the locking position (3.2.1) through a curved segment, the rebound sliding block (5) is provided with a second arc-shaped area (5.1), the third shaft body (7.1) slides on the second arc-shaped area (5.1) when the fourth shaft body (7.2) slides on the curved segment.

4. The bumper rebound lock apparatus of claim 3, wherein: The front end of the pushing part (4.3) is provided with a first inclined part (4.4), when the fixed block (1) and the movable block (2) are opened, the movable block (2) drives the buffer sliding block (4) to continue to advance, the pushing part (4.3) acts on the third shaft body (7.1) through the first inclined part (4.4), so that the fourth shaft body (7.2) slides along the first inclined part (4.4) from the locking position (3.2.1) to the first avoiding position (3.2.2).

5. The bumper rebound lock apparatus of claim 4, wherein: The bottom of the buffer hook (11) is provided with a sliding groove (11.1), the sliding groove (11.1) is provided with a triggering end (11.2) and a pushing end (11.3), when the fixed block (1) and the movable block (2) are closed, the triggering end (11.2) acts on the first shaft body (6.1), so that the second shaft body (6.2) slides along the curved area (3.1.1), the first shaft body (6.1) slides on the sliding groove (11.1) while the second shaft body (6.2) slides along the curved area (3.1.1), when the second shaft body (6.2) slides to the end of the curved area (3.1.1), the pushing end (11.3) acts on the first shaft body (6.1), so that the second shaft body (6.2) slides along the linear sliding area (3.1.2).

6. The bumper rebound lock apparatus of claim 5, wherein: Further comprising a third elastic member (12), one end of the third elastic member (12) is elastically connected with the hook (7), the other end is elastically connected with the rebound sliding block (5), when the fourth shaft body (7.2) slides into the second avoiding position (3.2.3), the third elastic member (12) elastically acts on the hook (7), after the pushing block (10) passes the hook (7), the fourth shaft body (7.2) slides from the second avoiding position (3.2.3) to the beginning of the sliding track (3.2.4).

7. The recoil latch assembly of claim 6, wherein: Further comprising a damper (13), the damper (13) is arranged on the rebound sliding block (5) and comprises a cylinder body (13.1) and a piston rod (13.2), one end of the piston rod (13.2) is arranged in the cylinder body (13.1), the other end of the piston rod (13.2) extends out of the cylinder body (13.1) and is connected with the buffer sliding block (4), when the buffer sliding block (4) and the rebound sliding block (5) move relative to each other, the piston rod (13.2) does the extension and retraction movement in the cylinder body (13.1), so as to realize the damping effect.

8. The bumper rebound stop of claim 7, wherein: The bottom of the buffer sliding block (4) is provided with a fifth shaft body (4.2), the hanging pin (6) is provided with a first shaft hole (6.3), the fifth shaft body (4.2) is rotatably connected with the first shaft hole (6.3), the top of the hanging nail (7) is provided with a sixth shaft body (7.3), the rebound sliding block (5) is provided with a second shaft hole (5.2), and the sixth shaft body (7.3) is rotatably connected with the second shaft hole (5.2).

9. The recoil latch assembly of claim 8, wherein: The frame body (3) is provided with a first guide edge (3.3) and a second guide edge (3.4), the buffer sliding block (4) slides along the first guide edge (3.3), and the rebound sliding block (5) slides along the second guide edge (3.4).

10. The recoil buffering lock device according to any one of claims 6-9, characterized in that: The first elastic member (8) is a tension spring, the second elastic member (9) is a compression spring, and the third elastic member (12) is a torsion spring.

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