CN118121036A - Overturn starting and stopping device with buffering function - Google Patents

Abstract

The invention provides a turnover opening and closing device with a buffering function, which comprises a hinge mechanism, wherein the hinge mechanism comprises a fixed frame, a movable frame, a sliding rail, a push-and-play automatic buffering component, a four-bar assembly, a control sliding rail and a control connecting component; and moreover, the drawer can be controlled not to be closed inwards in the ascending process of opening and overturning, so that the drawer is reliable and practical, has a closing and locking function, and improves the use quality of products.

Description

Overturn starting and stopping device with buffering function

Technical Field

The invention relates to the technical field of drawer opening and closing devices, in particular to a turnover opening and closing device with a buffering function.

Background

With the improvement of living standard, the storage space at the upper part in the housing, such as bookcase, cabinet, bath cabinet, etc., can be fully utilized, and the hanging cabinet can be installed in the upper space.

The existing hanging cabinet is fixed in installation height and relatively high in relative position, people need to stand on the top of the head and heel from the hanging cabinet, even some people need to use tools such as a ladder stand, and therefore the hanging cabinet is inconvenient to use and cannot achieve the expected use effect of the hanging cabinet.

Therefore, the prior hanging cabinet is provided with a storage drawer, in order to facilitate taking and placing articles, a turnover hinge component is arranged between the cabinet body and the drawer, original power is provided by the spring component, the acting force effect is realized by adjusting the position of the spring component to realize the length of a force arm, the direction of the acting force is realized by closing and opening the drawer through the direction of a connecting rod component connected with the force arm, and the aim that the drawer is turned downwards, opened and turned upwards is achieved.

The existing flip hinge component has the following defects in practical application:

1) In order to realize the lifting function by downwards overturning, opening and closing the drawer, the connecting rod assembly is complex in structure, high in precision in matching requirement and influencing the production cost;

2) In order to smoothly turn down, open and turn up, a handle is required to be assembled on a panel of the drawer so as to facilitate operation, but the product appearance is affected.

3) In order to enable the drawer to smoothly turn down and open and turn up and close, enough space is needed for opening and closing the drawer, otherwise, the drawer and the cabinet body collide with each other, however, the space occupation is large, the gap is large, dirt is easy to accumulate, the transmission stability of the turnover hinge component is reduced, and the operation is more difficult because of the drawer with larger special load.

4) The drawer is not provided with an opening buffer function, and in the lower overturning process, large impact force is generated due to overlarge load, noise is generated, meanwhile, the drawer is damaged, and the service life of the product is reduced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the overturning start-stop device with the buffering function, which has the advantages of simple structure, convenience in assembly, stable transmission, convenience in overturning downwards for opening after the drawer automatically pops up, easiness in operation, good buffering effect, locking function, practicability, reliability, attractive appearance and capability of ensuring the use quality of products.

The invention aims at realizing the following steps: the turnover opening and closing device with buffering function includes one hinge mechanism for the drawer to open and close on the cabinet, one fixing frame installed on the cabinet, one movable frame installed in the drawer, one linear moving slide rail for the drawer to move, one automatic pushing buffering part for the drawer to push in, lock, store, release and close, one four-bar assembly for the drawer to turn up and down relatively to the cabinet, one control connecting part for controlling the slide rail and the four-bar assembly,

The movable rail of the sliding rail is matched with the movable frame, and the fixed rail of the sliding rail is matched with the fixed frame; the movable frame is connected to the fixed frame in a linear sliding way through the sliding rail;

The automatic pushing and elastic buffering component comprises a pushing and elastic assembly and a buffering damper, wherein the pushing and elastic assembly comprises a pushing and elastic fixing seat arranged on a fixing frame, an energy storage sliding piece connected to the pushing and elastic fixing seat in a sliding mode, and a pushing and elastic stirring block arranged on a movable frame, wherein the pushing and elastic stirring block pushes the energy storage sliding piece to lock and store energy on the pushing and elastic fixing seat along with the inward movement of the movable frame and the buckling of the energy storage sliding piece, or the energy storage sliding piece is unlocked from the pushing and elastic fixing seat and slides outwards along the pushing and elastic fixing seat under the condition of pressing a drawer, and meanwhile the pushing and elastic stirring block and the energy storage sliding piece can be separated;

the damping damper is arranged on the fixing frame, and a damping push rod of the damping damper is connected with the lower swinging part of the four-bar linkage assembly; the middle positioning parts of the four-bar linkage assemblies are respectively connected with the movable frame through shafts, and the upper swinging parts of the four-bar linkage assemblies are respectively matched with the drawers;

The control connecting part comprises a limiting guide groove arranged between the fixed frame and the sliding rail and a control rotating block which is arranged on the lower swinging part of the four-bar linkage assembly and is connected to the movable frame through a shaft, wherein the control rotating block slides inwards along with the movable frame and directionally slides into the limiting guide groove, or the control rotating block slides outwards along with the movable frame and slides away from the limiting guide groove and simultaneously can rotate along with the lower rotating part of the four-bar linkage assembly relative to the movable frame through the shaft.

According to the optimization, the four-bar linkage assembly comprises an upper swing connecting rod, a first positioning rod, a second positioning rod and a lower swing connecting rod, wherein the lower swing ends of the first positioning rod and the second positioning rod are respectively connected to the movable frame in a shaft mode, the upper swing ends of the first positioning rod and the second positioning rod are respectively connected to the upper swing connecting rod, the upper swing connecting rod is installed in a matched mode with the drawer, the lower swing end of the first positioning rod is connected with the upper swing end of the lower swing connecting rod, and the lower swing end of the lower swing connecting rod is connected with the damping push rod of the buffering damper.

According to the optimization, the upper swing connecting rod is provided with the locking component matched with the side wall of the drawer for buckling, the locking component comprises the locking groove arranged on the upper swing connecting rod and the locking convex blocks respectively arranged on the side wall of the drawer, and the locking convex blocks are glidingly arranged on the locking groove from top to bottom.

According to the optimization, the control rotating block is arranged between the movable frame and the fixed frame, and the control rotating block penetrates through the movable frame through the connecting shaft to be fixedly connected to the lower swinging end of the first positioning rod, so that the control rotating block rotates along with the first positioning rod.

According to the optimization, the control rotating block comprises a rotating circular arc part which moves linearly along with the movable frame to slide and move in the limiting guide groove, or can rotate along with the first positioning rod while moving along with the movable frame to move away from the limiting guide groove, so that the rotating circular arc part opens or closes a port limiting the guide groove.

According to the optimization, the energy storage sliding piece comprises a push-and-play sliding block, a push-and-play rod and a spring, wherein the push-and-play sliding block is in sliding connection with the push-and-play fixed seat, one end of the push-and-play rod can be shifted up and down to be connected with the push-and-play sliding block, the push-and-play fixed seat is provided with an energy storage sliding groove which is matched with the push-and-play rod to push and slide, bounces under the elastic action of the spring, and supplies the push-and-play rod to slide away through elastic reset acting force of the spring when being pressed, and the push-and-play shifting block can be buckled with the push-and-play rod to drive the push-and-play rod to slide on the energy storage sliding groove along with the sliding of the movable frame, or the push-and-play shifting block can drive the push-and-play rod to slide away from the energy storage sliding groove along with the movable frame to be separated from the push-and-play rod.

According to the optimization, the buffer damper is arranged at the lower part of the fixing frame, the damping push rod of the buffer damper is provided with the connecting sliding block connected with the lower swinging end of the second positioning rod, and the fixing frame is provided with the clearance groove for limiting the connecting sliding linear sliding.

According to the optimization, the upper end of the fixing frame is provided with the bending part for supporting the pushing and bouncing assembly, and the bending part and the outer side of the fixing rail of the sliding rail are provided with limiting guide grooves.

The invention has the advantages that:

1) Through the structure cooperation of mount, movable frame and slide rail, four link assembly, realize that the drawer straight line roll-off cabinet body can be opened downwards to and upwards reset upset and the straight line roll-in cabinet body, convenient operation avoids the upset in-process drawer and cabinet body to interfere each other, reduces the space and occupies, promotes transmission stability.

2) The automatic buffer component is matched with the push-and-play device, the drawer can be automatically slid outwards under the push-and-play action of the push-and-play assembly by pressing, the drawer can be turned downwards and opened conveniently, the operation is convenient, meanwhile, under the action of the buffer damper, the buffer function is realized, the buffer effect is good, and the automatic buffer device is suitable for drawers with larger loads; and when closing the drawer, the drawer is locked on the cabinet body by utilizing the locking function of the push-and-spring assembly, so that the drawer is reliable and practical.

3) The structure of cooperation control connecting piece can control slide rail and four link assembly operation orders effectively, realizes that the drawer is opened from the cabinet body and is turned over downwards, and is closed on the cabinet body after upwards turning over, and the transmission is stable, avoids the drawer to interfere with the cabinet body each other in the upset process, and has the lifting function, conveniently gets to put article to the drawer, excellent in use effect.

4) The drawer is locked on the hinge mechanism through the locking component, so that the structure is simple, and the assembly is convenient.

Drawings

Fig. 1 is an assembled perspective view of a preferred embodiment of the present invention in a closed position.

FIG. 2 is a diagram showing the relationship between the drawer and the closed state according to the preferred embodiment of the present invention.

Fig. 3 is a schematic view showing a closed state according to a preferred embodiment of the present invention.

FIG. 4 is a schematic view of a closed state and another angle according to the preferred embodiment of the present invention.

Fig. 5 is a partial cross-sectional view of a preferred embodiment of the present invention in a closed state.

Fig. 6 is an assembly schematic diagram of an opened state of the preferred embodiment of the present invention.

FIG. 7 is a diagram showing the relationship between the open state and the drawer according to the preferred embodiment of the present invention.

Fig. 8 is a block diagram showing an opened state of the preferred embodiment of the present invention.

Fig. 9 is a partially exploded view of the opened state of the preferred embodiment of the present invention.

Fig. 10 is an exploded view of the opened state of the preferred embodiment of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

According to the invention, as shown in fig. 1 to 10, the turnover opening and closing device with buffer function is a hinge mechanism for opening and closing the drawer 2 on the cabinet 1, the hinge mechanism comprises a fixed frame 3 arranged on the cabinet 1, a movable frame 4 arranged in a matching way with the drawer 2, a slide rail 5 for the drawer 2 to move linearly, a pushing and elastic automatic buffer component 6 for pushing, locking, storing energy, pressing, unlocking and releasing energy of the drawer 2 and having a closing buffer function, a four-bar linkage assembly 7 for the drawer 2 to turn up and down relative to the cabinet 1, and a control connecting component 8 for controlling the movement sequence of the slide rail 5 and the four-bar linkage assembly 7.

The movable rail of the sliding rail 5 is matched with the movable frame 4, and the fixed rail of the sliding rail 5 is matched with the fixed frame 3; the movable frame 4 is connected to the fixed frame 3 in a linear sliding way through a sliding rail 5.

And the automatic bullet-pushing buffering component 6 comprises a bullet-pushing assembly 61 and a buffering damper 62, wherein the bullet-pushing assembly 61 comprises a bullet-pushing fixing seat 611 installed on the fixed frame 3, an energy storage sliding piece connected on the bullet-pushing fixing seat 611 in a sliding mode, and a bullet-pushing stirring block 612 installed on the movable frame 4. The push-bullet poking block 612 pushes the energy storage sliding member to lock and store energy on the push-bullet fixing seat 611 while being buckled with the energy storage sliding member along with the inward movement of the movable frame 4, or the energy storage sliding member is unlocked from the push-bullet fixing seat 611 and slides outwards along the push-bullet fixing seat 611 under the condition of pressing the drawer 2, and meanwhile the push-bullet poking block 612 can be separated from the energy storage sliding member.

During the process, the buffer damper 62 is installed on the fixed frame 3, and a damping push rod of the buffer damper 62 is connected with a lower swinging part of the four-bar linkage assembly 7; the middle positioning parts of the four-bar linkage assemblies 7 are respectively connected with the movable frame 4 in a shaft way, and the upper swinging parts of the four-bar linkage assemblies 7 are respectively matched with the drawers 2.

And, the control connection part 8 includes a limiting guide groove 81 provided between the fixed frame 3 and the slide rail 5, and a control rotation block 82 mounted on the lower swing portion of the four-bar assembly 7 and shaft-connected to the movable frame 4. The control rotating block 82 slides inwards along with the movable frame 4 and directionally slides into the limiting guide groove 81, or the control rotating block 82 slides outwards along with the movable frame 4 and slides out of the limiting guide groove 81 and simultaneously can rotate along with the lower rotating part of the four-bar assembly 7 relative to the movable frame 4.

Referring to fig. 1 to 10, further details, the four-bar assembly 7 includes an upper swing connecting rod 71, a first positioning rod 72, a second positioning rod 73, and a lower swing connecting rod 74, wherein the lower swing ends of the first positioning rod 72 and the second positioning rod 73 are respectively connected to the movable frame 4 through shafts, the upper swing ends of the first positioning rod 72 and the second positioning rod 73 are respectively connected to the upper swing connecting rod 71, the upper swing connecting rod 71 is installed in cooperation with the drawer 2, the lower swing end of the first positioning rod 72 is connected to the upper swing end of the lower swing connecting rod 74, and the lower swing end of the lower swing connecting rod 74 is connected to the damping push rod of the buffer damper 62.

Through the structure cooperation of mount 3, movable frame 4 and slide rail 5, four link assembly 7, realize that drawer 2 can the straight line roll-off cabinet body 1 and can down overturn and open under slide rail 5's effect to and the upset that resets upwards and the straight line roll-in cabinet body 1, convenient operation avoids drawer 2 and cabinet body 1 to interfere each other in the upset process, reduces the space and occupies, promotes transmission stability.

As shown in fig. 1 to 10, the energy storage sliding piece further comprises a push-and-bullet sliding block 613, a push-and-bullet rod 614 and a spring 615. The push-and-play sliding block 613 is slidably connected to the push-and-play fixing seat 611, one end of the push-and-play rod 614 can be connected to the push-and-play sliding block 613 in a toggle manner, and the push-and-play fixing seat 611 is provided with an energy storage sliding groove 616 adapted to push-and-play the push-and-play rod 614, which is buckled with the push-and-play rod 614 under the elastic action of the spring 615, and is elastically reset by the spring 615 to enable the push-and-play rod 614 to slide away when being pressed. The pushing and pulling block 612 may be fastened to the pushing rod 614 along with the sliding movement of the movable frame 4 to drive the pushing rod 614 to slide on the energy storage sliding groove 616, or the pushing and pulling block 612 may be fastened to the pushing rod 614 along with the sliding movement of the movable frame 4 to drive the pushing rod 614 to slide off the energy storage sliding groove 616 and separate from the pushing rod 614.

The drawer 2 can be automatically slid outwards under the pushing action of the pushing and bouncing assembly 61 by pressing the drawer 2 in cooperation with the pushing and bouncing automatic buffering component 6, so that the drawer 2 can be turned downwards and opened conveniently, and the operation is convenient; when the drawer 2 is closed, the push rod 614 of the push-and-spring assembly 61 is locked in the energy storage sliding groove 616, so that the drawer 2 is locked on the cabinet 1, and the locking function is realized, thereby being reliable and practical.

Meanwhile, the buffer damper 62 is mounted at the lower part of the fixing frame 3, a connecting sliding block 621 connected with the lower swinging end of the second positioning rod 73 is mounted on the damping push rod of the buffer damper 62, and the fixing frame 3 is provided with a clearance groove for limiting the connecting sliding linear sliding.

Under the action of the buffer damper 62, the opening buffer function is realized, the buffer effect is good, and the drawer 2 with larger load is suitable for use.

Referring to fig. 1 to 10, in further detail, the upper swing link 71 is provided with a locking component which is fastened with the side wall of the drawer 2, the locking component comprises a locking groove 9 provided on the upper swing link 71 and locking lugs 10 provided on the side wall of the drawer 2, and the locking lugs 10 are slidingly mounted on the locking groove 9 from top to bottom.

The drawer 2 is locked on the hinge mechanism through the structural cooperation of the locking convex blocks 10 of the locking parts and the locking grooves 9, so that the structure is simple and the assembly is convenient.

Referring to fig. 1 to 3, the control rotation block 82 is disposed between the movable frame 4 and the fixed frame 3, and the control rotation block 82 is fixedly connected to the lower swing end of the first positioning rod 72 through the movable frame 4 by a connection shaft, so that the control rotation block 82 rotates along with the first positioning rod 72.

The upper end of the fixing frame 3 is provided with a bending portion 31 for supporting the push-spring assembly 61, and a limiting guide groove 81 is formed on the outer side of the bending portion 31 and the outer side of the fixing rail of the sliding rail 5, so that structural stability is enhanced.

Further, the control rotation block 82 includes a rotation circular arc portion. The rotating circular arc portion moves linearly with the movable frame 4 to slidably move in the defining guide groove 81, or the rotating circular arc portion moves with the movable frame 4 to move away from the defining guide groove 81 while rotating with the first positioning lever 72, so that the rotating circular arc portion opens or closes the port defining the guide groove 81.

Like this, adopt the structure of control connecting piece 8, can control slide rail 5 and four link assembly 7 operation orders effectively, realize that drawer 2 is opened from cabinet body 1 back and is down turned over, and it is closed on cabinet body 1 to upwards turn over the back, and the transmission is stable, avoids drawer 2 and cabinet body 1 to interfere each other in the upset in-process, and has the raising and lowering functions, conveniently gets to put article to drawer 2, excellent in use effect.

Referring to fig. 1 to 10, the working principle of the overturn opening and closing device of the structure is as follows:

during assembly, the locking lug 10 is snapped onto the locking groove 9, so that the drawer 2 is snapped onto the upper swing connecting rod 71 of the four-bar assembly 7.

When the drawer 2 is opened, the movable frame 4 only needs to be pushed to move in the fixed frame 3 along with the movable frame, the push rod 614 is separated from the energy storage sliding groove 616 to realize unlocking, and the push rod 613 is pulled under the reset elastic action of the spring 615 to enable the push rod 614 to slide outwards in the energy storage sliding groove 616, so that the movable frame 4 is pushed to slide outwards along the fixed frame 3, the push control rotating block 82 is pushed to slide outwards along the limiting guide groove 81, the push rod 614 is separated from the push rod poking block 612 of the movable frame 4 after sliding to a certain distance, and the movable rail of the sliding rail 5 is completely unfolded outwards relative to the fixed rail to realize the outwards linear opening of the drawer 2. When the control knob 82 slides away from the defining guide groove 81, the drawer 2 can be pulled down. At this time, under the action of gravity of the drawer 2, the upper swing ends of the first positioning rod 72 and the second positioning rod 73 of the four-bar assembly 7 swing downwards around their lower swing ends respectively, and drive the control rotating block 82 to rotate, so that the rotating arc portion closes the port defining the guide slot 81, and movement into the cabinet 1 during the downward overturning of the drawer 2 is avoided. Due to the parallel deformation characteristic of the four-bar assembly 7, the drawer 2 descends to the designated position along with the downward turning of the four-bar assembly 7, and meanwhile, the lower swinging end of the first positioning rod 72 pulls the lower swinging connecting rod 74 to swing and drives the connecting sliding block 621 to slide inwards along the clearance groove so as to compress the damping push rod of the buffering damper 62, and the buffering damper 62 works to realize the buffering effect in the process of the turnover and descending of the drawer 2.

When the drawer 2 is closed, only the drawer 2 needs to be turned upwards, so that the first positioning rod 72 and the second positioning rod 73 of the four-bar assembly 7 swing upwards around the shaft points of the lower swinging ends respectively, and accordingly the upper swinging connecting rod 71 and the lower swinging connecting rod 74 are driven to correspondingly turn upwards respectively, so that the drawer 2 swings upwards along with the drawer, and the damping push rod of the buffer damper 62 is reset outwards. While controlling the rotation block 82 to rotate with the lower swing end of the first positioning lever 72, thereby opening the restricting guide 81. At this time, the drawer 2 has been raised to a designated position. Subsequently, the drawer 2 is pushed, so that the rotation circular arc portion of the control rotation block 82 slides into the limiting guide groove 81, and the movable frame 4 slides inward along the fixed frame 3. When the movable frame 4 slides to a designated position, the push-bullet poking block 612 is buckled with the push-bullet rod 614 and pushes the push-bullet rod 614 to slide into the energy storage sliding groove 616, and simultaneously pushes the push-bullet sliding block 613 to slide inwards along the push-bullet fixing seat 611, so that the spring 615 is compressed to store energy. When the drawer 2 is pushed into a specific position, the hand is released, and the push rod 614 is locked on the energy storage sliding groove 616 under the restoring elastic force of the spring 615, so that the drawer 2 is locked on the cabinet 1.

The embodiment is only a specific implementation mode with good effect, and all structures which are the same as or equivalent to the overturning opening and closing device with the buffering function are within the protection scope of the invention.

Claims (8)

1. The utility model provides a upset headstock gear with buffer function, includes the hinge mechanism that supplies drawer (2) to open and shut at cabinet body (1) usefulness, its characterized in that: the hinge mechanism comprises a fixed frame (3) arranged on the cabinet body (1), a movable frame (4) which is matched with the drawer (2), a slide rail (5) for the drawer (2) to linearly move, a pushing and elastic automatic buffer component (6) which is used for pushing the drawer (2) into a locking and storing energy, pressing and unlocking energy release and has a closing buffer function, a four-bar linkage assembly (7) for the drawer (2) to overturn up and down relative to the cabinet body (1), and a control connecting component (8) for controlling the slide rail (5) and the four-bar linkage assembly (7) to move sequentially,

The movable rail of the sliding rail (5) is matched with the movable frame (4), and the fixed rail of the sliding rail (5) is matched with the fixed frame (3); the movable frame (4) is connected to the fixed frame (3) through a sliding rail (5) in a linear sliding manner;

The automatic pushing and pulling buffer component (6) comprises a pushing and pulling assembly (61) and a buffer damper (62), the pushing and pulling assembly (61) comprises a pushing and pulling fixing seat (611) arranged on a fixing frame (3), an energy storage sliding piece connected to the pushing and pulling fixing seat (611) in a sliding mode, and a pushing and pulling block (612) arranged on a movable frame (4), the pushing and pulling block (612) pushes the energy storage sliding piece to lock and store energy on the pushing and pulling fixing seat (611) when the movable frame (4) moves inwards and is buckled with the energy storage sliding piece, or the energy storage sliding piece is unlocked from the pushing and pulling fixing seat (611) and slides outwards along the pushing and pulling fixing seat (611) under the condition of pressing a drawer (2) and can enable the pushing and pulling block (612) to be separated from the energy storage sliding piece;

The buffer damper (62) is arranged on the fixed frame (3), and a damping push rod of the buffer damper (62) is connected with the lower swinging part of the four-bar assembly (7); the middle positioning parts of the four-bar linkage assemblies (7) are respectively connected with the movable frame (4) through shafts, and the upper swinging parts of the four-bar linkage assemblies (7) are respectively installed in a matched mode with the drawers (2);

the control connecting part (8) comprises a limiting guide groove (81) arranged between the fixed frame (3) and the sliding rail (5) and a control rotating block (82) which is arranged on the lower swinging part of the four-bar linkage assembly (7) and is connected to the movable frame (4) through a shaft, wherein the control rotating block (82) slides inwards along with the movable frame (4) and directionally slides into the limiting guide groove (81), or the control rotating block (82) slides outwards along with the movable frame (4) and slides away from the limiting guide groove (81) and simultaneously can rotate along with the lower rotating part of the four-bar linkage assembly (7) relative to the movable frame (4) through a shaft.

2. The roll-over starting and stopping device with buffering function according to claim 1, wherein: the four-bar linkage assembly (7) comprises an upper swing connecting rod (71), a first positioning rod (72), a second positioning rod (73) and a lower swing connecting rod (74), wherein lower swing ends of the first positioning rod (72) and the second positioning rod (73) are respectively connected to the movable frame (4) through shafts, upper swing ends of the first positioning rod (72) and the second positioning rod (73) are respectively connected to the upper swing connecting rod (71), the upper swing connecting rod (71) is installed in a matched mode with the drawer (2), the lower swing end of the first positioning rod (72) is connected with the upper swing end of the lower swing connecting rod (74), and the lower swing end of the lower swing connecting rod (74) is connected with a damping push rod of the buffer damper (62).

3. The roll-over starting and stopping device with buffering function according to claim 2, wherein: the upper swinging connecting rod (71) is provided with a locking component which is matched with the side wall of the drawer (2) in a locking mode, the locking component comprises a locking groove (9) formed in the upper swinging connecting rod (71) and locking convex blocks (10) respectively formed in the side wall of the drawer (2), and the locking convex blocks (10) are slidably mounted on the locking groove (9) from top to bottom.

4. The roll-over starting and stopping device with buffering function according to claim 2, wherein: the control rotating block (82) is arranged between the movable frame (4) and the fixed frame (3), and the control rotating block (82) penetrates through the movable frame (4) through the connecting shaft to be fixedly connected to the lower swinging end of the first positioning rod (72) so that the control rotating block (82) rotates along with the first positioning rod (72).

5. The roll-over starting and stopping device with buffering function according to claim 4, wherein: the control rotating block (82) comprises a rotating circular arc part which moves linearly with the movable frame (4) to slide and move on the limiting guide groove (81), or can rotate with the first positioning rod (72) while moving with the movable frame (4) to move away from the limiting guide groove (81), so that the rotating circular arc part opens or closes a port limiting the guide groove (81).

6. The roll-over starting and stopping device with buffering function according to claim 1, wherein: the energy storage sliding piece comprises a push-and-play sliding block (613), a push-and-play rod (614) and a spring (615), wherein the push-and-play sliding block (613) is slidably connected to the push-and-play fixed seat (611), one end of the push-and-play rod (614) can be connected to the push-and-play sliding block (613) in a toggle mode, the push-and-play fixed seat (611) is provided with an energy storage sliding groove (616) which is suitable for pushing and sliding the push-and-play rod (614) and is buckled with the push-and-play rod (614) in a rebound mode under the elastic action of the spring (615), the push-and-play sliding block (612) can slide with the push-and-play rod (614) along with the movable frame (4) to drive the push-and-play rod (614) to slide on the energy storage sliding groove (616), or the push-and-play rod (614) can be driven to slide away from the energy storage sliding groove (616) along with the movable frame (4) to be separated from the push-and-play rod (614).

7. The roll-over starting and stopping device with buffering function according to claim 2, wherein: the buffer damper (62) is arranged at the lower part of the fixing frame (3), the damping push rod of the buffer damper (62) is provided with a connecting sliding block (621) connected with the lower swinging end of the second positioning rod (73), and the fixing frame (3) is provided with a clearance groove for limiting the connecting sliding linear sliding.

8. The roll-over starting and stopping device with buffering function according to claim 1, wherein: the upper end of the fixing frame (3) is provided with a bending part (31) for supporting the pushing and bouncing assembly (61), and a limiting guide groove (81) is formed on the outer side of the bending part (31) and the outer side of a fixing rail of the sliding rail (5).