A flip opening and closing device with a buffering function

Abstract

The present invention provides a flip opening and closing device with a buffering function, which includes a hinge mechanism. The hinge mechanism includes a fixed frame, a movable frame, a slide rail, a push and spring automatic buffering component, a four-link assembly, a control slide rail, and a control connection component. Through the structural cooperation of the fixed frame, the movable frame, the slide rail, the push and spring automatic buffering component, the four-link assembly, the control slide rail, and the control connection component, the drawer can be pressed, and the drawer can be automatically opened outwards under the pushing action of the push and spring automatic buffering component. At the same time, during the descending process of the drawer turning downwards, it has a buffering effect, stable operation, convenient operation, and is suitable for use with drawers with a relatively large load. Moreover, it can control the drawer not to close inwards during the ascending process of opening and turning, is reliable and practical, and has a closing and locking function, improving the use quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of drawer opening and closing devices, and specifically relates to a flip opening and closing device with a buffering function. Background Art

[0002] With the improvement of living standards, the storage space in the upper part of the residential unit will be fully utilized, such as bookcases, cabinets, bathroom cabinets, etc. The upper space can also be fully utilized, and wall cabinets will be installed in the upper space.

[0003] The installation height of the existing wall cabinets is fixed and relatively high. When people take and place items from the wall cabinets, they need to raise their heads and stand on tiptoe, and even some need to use tools such as ladders, which is inconvenient to use and fails to achieve the expected use effect of the wall cabinets.

[0004] Therefore, the existing wall cabinets are installed with storage drawers. In order to facilitate the taking and placing of items, a flip hinge component is installed between the cabinet body and the drawer. It provides the original power through a spring component, and the magnitude of the acting force effect is achieved by adjusting the position of the spring component to realize the length of the force arm. The direction of the acting force and the opening and closing of the drawer are realized through the direction of the connecting rod assembly connected by the force arm, so as to achieve the downward flipping and opening and upward flipping and closing of the drawer.

[0005] The existing flip hinge components have the following deficiencies in practical applications:

[0006] 1) In order to achieve the downward flipping and closing of the drawer to realize the lifting function, its connecting rod assembly has a complex structure and high precision requirements for cooperation, which affects the production cost;

[0007] 2) In order to be able to smoothly flip down and open and flip up and close, a handle needs to be assembled on the panel of the drawer to facilitate operation, but it will affect the beauty of the product.

[0008] 3) In order to enable the drawer to smoothly flip down and open and flip up and close, enough space is required for the opening and closing of the drawer. Otherwise, the drawer and the cabinet body will collide with each other. However, it will occupy a large space and have a large gap, which is easy to accumulate dirt and reduce the transmission stability of the flip hinge component. Especially for drawers with a large load, the operation is more difficult.

[0009] 4) It does not have an opening buffering function. During the downward flipping process, due to excessive load, a large impact force is generated, which generates noise while damaging the drawer and reduces the service life of the product. Summary of the Invention

[0010] The invention purpose of the present invention is to overcome the deficiencies of the prior art and provide a flip opening and closing device with a buffering function, which has a simple structure, is convenient to assemble, has stable transmission, can achieve the convenient downward flipping and opening of the drawer after automatic ejection, is easy to operate, has a good buffering effect, and at the same time has a locking function, is practical and reliable, and is beautiful, ensuring the use quality of the product.

[0011] The invention objective of the present invention is achieved as follows: a flip opening and closing device with a buffering function, comprising a hinge mechanism for a drawer to be opened and closed on a cabinet, the hinge mechanism comprising a fixed frame mounted on the cabinet, a movable frame adapted to be mounted on the drawer, a slide rail for the linear movement of the drawer, a push-to-open automatic buffer component for the drawer to be pushed in to lock and store energy, and to be pressed to unlock and release energy and having a closing buffering function, a four-link assembly for the drawer to flip up and down relative to the cabinet, and a control connection component for controlling the slide rail and the movement sequence of the four-link assembly,

[0012] The movable rail of the slide rail is matched with the movable frame, and the fixed rail of the slide rail is matched with the fixed frame; the movable frame is connected to the fixed frame by linear sliding of the slide rail;

[0013] The push-open automatic buffer component comprises a push-open assembly and a buffer damper. The push-open assembly comprises a push-open fixed seat mounted on a fixed frame, an energy storage sliding member slidably connected to the push-open fixed seat, and a push-open toggle block mounted on a movable frame. The push-open toggle block pushes the energy storage sliding member to lock and store energy on the push-open fixed seat while the movable frame moves inward and buckles with the energy storage sliding member. Alternatively, when the drawer is pressed, the energy storage sliding member is unlocked from the push-open fixed seat and slides outward along the push-open fixed seat while separating the push-open toggle block from the energy storage sliding member.

[0014] The buffer damper is installed on the fixed frame, and the damping push rod of the buffer damper is connected to the lower swinging part of the four-link assembly; the middle positioning part of the four-link assembly is axially connected to the movable frame, and the upper swinging part of the four-link assembly is matched and installed with the drawer;

[0015] The control connection component includes a limiting guide groove arranged between the fixed frame and the slide rail and a control rotating block installed on the lower swinging part of the four-bar linkage assembly and axially connected to the movable frame. The control rotating block slides inwardly with the movable frame and slides into the limiting guide groove in a directional manner, or the control rotating block slides outwardly with the movable frame and slides away from the limiting guide groove while rotating relative to the movable frame axis with the lower rotating part of the four-bar linkage assembly.

[0016] According to the above optimization, the four-link assembly includes an upper swing connecting rod, a first positioning rod, a second positioning rod, and a lower swing connecting rod. The lower swing ends of the first positioning rod and the second positioning rod are respectively axially connected to the movable frame, the upper swing end of the first positioning rod and the upper swing end of the second positioning rod are respectively connected to the upper swing connecting rod, the upper swing connecting rod is installed in conjunction with the drawer, the lower swing end of the first positioning rod is connected to the upper swing end of the lower swing connecting rod, and the lower swing end of the lower swing connecting rod is connected to the damping push rod of the buffer damper.

[0017] According to the above optimization, the upper swing connecting rod is provided with a locking component that is matched with the drawer side wall, and the locking component includes a locking groove arranged on the upper swing connecting rod and locking protrusions respectively arranged on the drawer side walls, and the locking protrusions are slidably mounted on the locking groove from top to bottom.

[0018] According to the above optimization, the control rotating block is arranged between the movable frame and the fixed frame, and the control rotating block passes through the movable frame through the connecting shaft and is fixedly connected to the lower swing end of the first positioning rod, so that the control rotating block rotates with the first positioning rod.

[0019] According to the above optimization, the control rotating block includes a rotating arc portion, and the rotating arc portion moves linearly with the movable frame to slide in the limited guide groove, or the rotating arc portion moves with the movable frame to move away from the limited guide groove and rotates with the first positioning rod at the same time, so that the rotating arc portion opens or closes the port of the limited guide groove.

[0020] According to the above optimization, the energy storage sliding member includes a push-and-pop sliding block, a push-and-pop rod, and a spring. The push-and-pop sliding block is slidably connected to the push-and-pop fixed seat. One end of the push-and-pop rod is connected to the push-and-pop sliding block by moving up and down. The push-and-pop fixed seat is provided with an energy storage sliding groove that is adapted to the push-and-pop rod to push in and slide, and rebounds and engages with the push-and-pop rod under the elastic action of the spring, and allows the push-and-pop rod to slide away through the elastic restoring force of the spring when pressed. The push-and-pop moving block slides with the movable frame and engages with the push-and-pop rod to drive the push-and-pop rod to slide on the energy storage sliding groove, or the push-and-pop moving block slides with the movable frame and drives the push-and-pop rod to slide away from the energy storage sliding groove and separate from the push-and-pop rod.

[0021] According to the above optimization, the buffer damper is installed at the lower part of the fixed frame, and the damping push rod of the buffer damper is installed with a connecting slider connected to the lower swing end of the second positioning rod, and the fixed frame is provided with an avoidance groove for limiting the linear sliding of the connecting slider.

[0022] According to the above optimization, the upper end of the fixed frame is provided with a bending portion for supporting the push-and-pop assembly, and the bending portion and the outer side of the fixed rail of the slide rail form a limiting guide groove.

[0023] The advantages of the present invention are:

[0024] 1) Through the structural coordination of the fixed frame, the movable frame, the slide rail and the four-link assembly, the drawer can slide out of the cabinet in a straight line and flip down to open, as well as flip upward and slide back into the cabinet in a straight line. The operation is convenient, and the interference between the drawer and the cabinet is avoided during the flipping process, which reduces space occupation and improves transmission stability.

[0025] 2) Cooperating with the automatic buffer component for pushing and ejecting, the drawer can be made to automatically slide outwards under the pushing and ejecting action of the pushing and ejecting assembly by pressing the drawer, which facilitates the downward flipping and opening of the drawer, is convenient for operation, and at the same time, under the action of the buffer damper, the opening buffer function is realized, with good buffer effect, and it is suitable for use with drawers with larger loads; moreover, when closing the drawer, the locking function of the pushing and ejecting assembly is utilized to lock the drawer on the cabinet body, which is reliable and practical.

[0026] 3) Cooperating with the structure of the control connection component, the running sequence of the slide rail and the four-bar linkage assembly can be effectively controlled, enabling the drawer to flip downwards after being opened from the cabinet body and close on the cabinet body after flipping upwards. The transmission is stable, avoiding mutual interference between the drawer and the cabinet body during the flipping process, and it has a lifting function, which is convenient for taking and placing items in the drawer, and the use effect is good.

[0027] 4) The drawer is locked to the hinge mechanism through the locking component, with a simple structure and convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an assembled three-dimensional view of the closed state of the preferred embodiment of the present invention.

[0029] Figure 2 It is a relationship diagram with the drawer in the closed state of the preferred embodiment of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the closed state of the preferred embodiment of the present invention.

[0031] Figure 4 It is a schematic structural diagram of another angle of the closed state of the preferred embodiment of the present invention.

[0032] Figure 5 It is a partial cross-sectional view of the closed state of the preferred embodiment of the present invention.

[0033] Figure 6 It is an assembled schematic diagram of the open state of the preferred embodiment of the present invention.

[0034] Figure 7 It is a relationship diagram with the drawer in the open state of the preferred embodiment of the present invention.

[0035] Figure 8 It is a structural diagram of the open state of the preferred embodiment of the present invention.

[0036] Figure 9 It is a partial exploded view of the open state of the preferred embodiment of the present invention.

[0037] Figure 10 It is an exploded view of the open state of the preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] According to the attached Figures 1 to 10 As shown, the flip opening and closing device with buffering function of the present invention has a hinge mechanism for opening and closing the drawer 2 on the cabinet body 1, and the hinge mechanism includes a fixed frame 3 installed on the cabinet body 1, a movable frame 4 adapted to be installed with the drawer 2, a slide rail 5 for linear movement of the drawer 2, a push-to-open automatic buffer component 6 for the drawer 2 to push in to lock and store energy, and to press to unlock and release energy and having a closing buffering function, a four-bar connecting rod assembly 7 for the drawer 2 to flip up and down relative to the cabinet body 1, and a control connecting component 8 for controlling the movement sequence of the slide rail 5 and the four-bar connecting rod assembly 7.

[0040] The movable rail of the slide rail 5 is installed in conjunction with the movable frame 4 , and the fixed rail of the slide rail 5 is installed in conjunction with the fixed frame 3 ; the movable frame 4 is connected to the fixed frame 3 through the slide rail 5 in a linear sliding manner.

[0041] Furthermore, the push-open automatic buffer component 6 includes a push-open assembly 61 and a buffer damper 62. The push-open assembly 61 includes a push-open fixed seat 611 installed on the fixed frame 3, an energy storage sliding member slidably connected to the push-open fixed seat 611, and a push-open toggle block 612 installed on the movable frame 4. The push-open toggle block 612 pushes the energy storage sliding member to lock and store energy on the push-open fixed seat 611 while the movable frame 4 moves inward and buckles with the energy storage sliding member. Alternatively, when the drawer 2 is pressed, the energy storage sliding member is unlocked from the push-open fixed seat 611 and slides outward along the push-open fixed seat 611, while the push-open toggle block 612 is separated from the energy storage sliding member.

[0042] During this period, the buffer damper 62 is installed on the fixed frame 3, and the damping push rod of the buffer damper 62 is connected to the lower swinging part of the four-bar assembly 7; the middle positioning part of the four-bar assembly 7 is axially connected to the movable frame 4, and the upper swinging part of the four-bar assembly 7 is installed in conjunction with the drawer 2.

[0043] Furthermore, the control connection component 8 includes a limited guide groove 81 provided between the fixed frame 3 and the slide rail 5 and a control rotation block 82 installed on the lower swinging part of the four-bar linkage assembly 7 and axially connected to the movable frame 4. The control rotation block 82 slides inwardly with the movable frame 4 and slides into the limited guide groove 81 in a directional manner, or the control rotation block 82 slides outwardly with the movable frame 4 and slides away from the limited guide groove 81 while rotating relative to the movable frame 4 axis with the lower rotation part of the four-bar linkage assembly 7.

[0044] Reference Figures 1 to 10As shown and further refined, the four-bar linkage 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. The lower swing ends of the first positioning rod 72 and the second positioning rod 73 are respectively pivotally connected to the movable frame 4. 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 fitted and installed 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. The lower swing end of the lower swing connecting rod 74 is connected to the damping push rod of the buffer damper 62.

[0045] Through the structural cooperation of the fixed frame 3, the movable frame 4 with the slide rail 5 and the four-bar linkage assembly 7, the drawer 2 can slide out of the cabinet body 1 linearly under the action of the slide rail 5 and can be turned downwards to open, and can be turned upwards to reset and slide linearly into the cabinet body 1. The operation is convenient, the interference between the drawer 2 and the cabinet body 1 during the turning process is avoided, the space occupation is reduced, and the transmission stability is improved.

[0046] Refer to Figures 1 to 10 As shown, further refined, the energy storage sliding member includes a push spring sliding block 613, a push spring rod 614, and a spring 615. The push spring sliding block 613 is slidably connected to the push spring fixing seat 611. One end of the push spring rod 614 is connected to the push spring sliding block 613 in a vertical toggling manner. The push spring fixing seat 611 is provided with an energy storage sliding groove 616 that is adapted for the push spring rod 614 to be pushed and slide in, and rebounds and engages with the push spring rod 614 under the elastic action of the spring 615, and supplies the elastic reset force of the spring 615 when pressed for the push spring rod 614 to slide away. The push spring toggling block 612 slides with the movable frame 4 and engages with the push spring rod 614 to drive the push spring rod 614 to slide on the energy storage sliding groove 616, or the push spring toggling block 612 slides with the movable frame 4 to drive the push spring rod 614 to slide away from the energy storage sliding groove 616 and separate from the push spring rod 614.

[0047] In cooperation with the push spring automatic buffer component 6, by pressing the drawer 2, the drawer 2 can be automatically slid outwards under the push spring action of the push spring assembly 61, which is convenient for the drawer 2 to be turned downwards to open and is convenient for operation. And when closing the drawer 2, the push spring rod 614 of the push spring assembly 61 is locked in the energy storage sliding groove 616, so that the drawer 2 is locked on the cabinet body 1 to realize the locking function, which is reliable and practical.

[0048] Meanwhile, the buffer damper 62 is installed at the lower part of the fixed frame 3, and a connecting slider 621 connected to the lower swing end of the second positioning rod 73 is installed on the damping push rod of the buffer damper 62. The fixed frame 3 is provided with an avoidance groove for restricting the linear sliding of the connecting slider 621.

[0049] Under the action of the buffer damper 62, the opening buffer function is realized, with good buffer effect, suitable for use with drawers 2 with larger loads.

[0050] Referring to Figures 1 to 10 As shown, for further refinement, the upper swing connecting rod 71 is provided with a locking component that is fitted and fastened to the side wall of the drawer 2. The locking component includes a locking groove 9 provided on the upper swing connecting rod 71 and locking protrusions 10 respectively provided on the side walls of the drawer 2. The locking protrusions 10 are slidably mounted on the locking groove 9 from top to bottom.

[0051] Through the structural cooperation of the locking protrusions 10 and the locking groove 9 of the locking component, the drawer 2 is locked to the hinge mechanism, with a simple structure and convenient assembly.

[0052] Referring to Figures 1 to 3 As shown, the control rotating block 82 is provided between the movable frame 4 and the fixed frame 3, and the control rotating block 82 is fixedly connected to the lower swing end of the first positioning rod 72 through a connecting shaft passing through the movable frame 4, so that the control rotating block 82 rotates with the first positioning rod 72.

[0053] Among them, the upper end of the fixed frame 3 is provided with a bending portion 31 for supporting the push spring combination 61. The bending portion 31 and the outer side of the fixed rail of the slide rail 5 form a limiting guide groove 81 to enhance the structural stability.

[0054] Moreover, the control rotating block 82 includes a rotating arc portion. The rotating arc portion linearly moves with the movable frame 4 to slide in the limiting guide groove 81, or the rotating arc portion moves away from the limiting guide groove 81 with the movable frame 4 and rotates with the first positioning rod 72 at the same time, so that the rotating arc portion opens or closes the port of the limiting guide groove 81.

[0055] In this way, by adopting the structure of the control connecting component 8, the running sequence of the slide rail 5 and the four-link assembly 7 can be effectively controlled, realizing that the drawer 2 flips down after being opened from the cabinet body 1 and closes on the cabinet body 1 after flipping up. The transmission is stable, avoiding interference between the drawer 2 and the cabinet body 1 during the flipping process, and having a lifting function, which is convenient for taking and placing items in the drawer 2, with good use effect.

[0056] Referring to Figures 1 to 10 As shown, the working principle of the flipping opening and closing device of this structure:

[0057] During assembly, the locking protrusions 10 are slid and fastened on the locking groove 9, so that the drawer 2 is fastened to the upper swing connecting rod 71 of the four-link assembly 7.

[0058] When opening, the drawer 2 only needs to be pressed, and the movable frame 4 is pushed into the fixed frame 3, and the ejector rod 614 is separated from the energy storage sliding groove 616 to achieve unlocking, and the ejector sliding block 613 is pulled under the reset elasticity of the spring 615, so that the ejector rod 614 slides outward in the energy storage sliding groove 616, thereby pushing the movable frame 4 to slide outward along the fixed frame 3, prompting the push control rotating block 82 to slide outward along the limited guide groove 81, and when the ejector rod 614 slides to a certain distance, it separates from the ejector block 612 of the movable frame 4, prompting the movable rail of the slide rail 5 to fully unfold outward relative to the fixed rail, so that the drawer 2 can be opened outward in a straight line. When the control rotating block 82 slides away from the limited guide groove 81, the drawer 2 can be pulled down. At this time, under the 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 linkage assembly 7 swing downward around their lower swing ends respectively, and drive the control rotating block 82 to rotate, so that the rotating arc portion will close the port of the guide groove 81 to prevent the drawer 2 from moving into the cabinet 1 during the downward flipping. Due to the parallel deformation characteristics of the four-bar linkage assembly 7, the drawer 2 drops to the specified position as the four-bar linkage assembly 7 flips downward. At the same time, the lower swing end of the first positioning rod 72 pulls the lower swing connecting rod 74 to swing, and drives the connecting slider 621 to slide inward along the avoidance groove to compress the damping push rod of the buffer damper 62, and the buffer damper 62 works to achieve a buffering effect during the flipping and descending process of the drawer 2.

[0059] When the drawer 2 is closed, it is only necessary to flip the drawer 2 upwards, so that the first positioning rod 72 and the second positioning rod 73 of the four-link assembly 7 are respectively swung upwards around the axis point of the lower swing end, thereby driving the upper swing connecting rod 71 and the lower swing connecting rod 74 to flip upwards accordingly, so that the drawer 2 swings upwards accordingly, and the damping push rod of the buffer damper 62 is reset outwards. At the same time, the control rotating block 82 rotates with the lower swing end of the first positioning rod 72, thereby opening the limited guide groove 81. At this time, the drawer 2 has risen to the specified position. Subsequently, the drawer 2 is pushed, so that the rotating arc portion of the control rotating block 82 can slide into the limited guide groove 81, and the movable frame 4 slides inward along the fixed frame 3. When the movable frame 4 slides to the specified position, the push-pull block 612 is engaged with the push-pull rod 614 and pushes the push-pull rod 614 to slide into the energy storage sliding groove 616, and at the same time pushes the push-pull sliding block 613 to slide inward along the push-pull fixed seat 611, thereby compressing the spring 615 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 action of the restoring elastic force of the spring 615, so that the drawer 2 is locked in the cabinet 1.

[0060] This embodiment is only a specific implementation method of the present invention with better effects. All structures that are the same or equivalent to the flip opening and closing device with buffering function of the present invention are within the protection scope of the present invention.

Claims

1. A flip opening and closing device with a buffering function, comprising a hinge mechanism for a drawer (2) to be opened and closed on a cabinet (1), characterized in that: The hinge mechanism comprises a fixed frame (3) mounted on the cabinet body (1), a movable frame (4) adapted to be mounted on the drawer (2), a slide rail (5) for linear movement of the drawer (2), a push-open automatic buffer component (6) for storing energy when the drawer (2) is pushed in and locked and releasing energy when it is pressed and unlocked and having a closing buffer function, a four-link assembly (7) for the drawer (2) to flip up and down relative to the cabinet body (1), and a control connection component (8) for controlling the movement sequence of the slide rail (5) and the four-link assembly (7). The movable rail of the slide rail (5) is mounted in a matching manner with the movable frame (4), and the fixed rail of the slide rail (5) is mounted in a matching manner with the fixed frame (3); the movable frame (4) is linearly slidably connected to the fixed frame (3) via the slide rail (5); The push-open automatic buffer component (6) comprises a push-open assembly (61) and a buffer damper (62); the push-open assembly (61) comprises a push-open fixed seat (611) mounted on a fixed frame (3), an energy storage sliding member slidably connected to the push-open fixed seat (611), and a push-open toggle block (612) mounted on a movable frame (4); the push-open toggle block (612) pushes the energy storage sliding member to lock and store energy on the push-open fixed seat (611) while the movable frame (4) moves inward and is buckled with the energy storage sliding member; or when the drawer (2) is pressed, the energy storage sliding member is unlocked from the push-open fixed seat (611) and slides outward along the push-open fixed seat (611) while the push-open toggle block (612) is separated from the energy storage sliding member; The buffer damper (62) is mounted on the fixed frame (3), and the damping push rod of the buffer damper (62) is connected to the lower swinging part of the four-link assembly (7); the middle positioning part of the four-link assembly (7) is axially connected to the movable frame (4), and the upper swinging part of the four-link assembly (7) is matched with the drawer (2). The control connection component (8) comprises a limiting guide groove (81) provided between the fixed frame (3) and the slide rail (5) and a control rotating block (82) installed on the lower swinging part of the four-link assembly (7) and axially connected to the movable frame (4); the control rotating block (82) slides inwardly with the movable frame (4) and slides into the limiting guide groove (81) in a directional manner; or the control rotating block (82) slides outwardly with the movable frame (4) and slides away from the limiting guide groove (81) while rotating relative to the axis of the movable frame (4) with the lower rotating part of the four-link assembly (7); The four-link 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); the lower swinging ends of the first positioning rod (72) and the second positioning rod (73) are respectively axially connected to the movable frame (4); the upper swinging end of the first positioning rod (72) and the upper swinging end of the second positioning rod (73) are respectively connected to the upper swing connecting rod (71); the upper swing connecting rod (71) is matched with the drawer (2) and installed; the lower swinging end of the first positioning rod (72) is connected to the upper swinging end of the lower swing connecting rod (74); and the lower swinging end of the lower swing connecting rod (74) is connected to the damping push rod of the buffer damper (62); The control rotating block (82) is arranged between the movable frame (4) and the fixed frame (3), and the control rotating block (82) passes through the movable frame (4) and is fixedly connected to the lower swing end of the first positioning rod (72) via a connecting shaft, so that the control rotating block (82) rotates along with the first positioning rod (72).

2. The flip opening and closing device with buffering function according to claim 1, characterized in that: The upper swing connecting rod (71) is provided with a locking component that is matched with the side wall of the drawer (2), and the locking component comprises a locking groove (9) provided on the upper swing connecting rod (71) and locking protrusions (10) respectively provided on the side wall of the drawer (2), and the locking protrusions (10) are slidably mounted on the locking groove (9) from top to bottom.

3. The flip opening and closing device with buffering function according to claim 1, characterized in that: The control rotating block (82) comprises a rotating circular arc portion, and the rotating circular arc portion moves linearly with the movable frame (4) to slide in the limiting guide groove (81), or the rotating circular arc portion moves with the movable frame (4) to move away from the limiting guide groove (81) and rotates with the first positioning rod (72) at the same time, so that the rotating circular arc portion opens or closes the port of the limiting guide groove (81).

4. The flip opening and closing device with buffering function according to claim 1, characterized in that: The energy storage sliding member comprises a push-pull sliding block (613), a push-pull rod (614), and a spring (615); the push-pull sliding block (613) is slidably connected to the push-pull fixing seat (611); one end of the push-pull rod (614) is connected to the push-pull sliding block (613) by moving up and down; the push-pull fixing seat (611) is provided with an adapter for the push-pull rod (614) to be pushed in and slidably and to rebound under the elastic action of the spring (615) to engage with the push-pull rod (614); When pressed, the elastic restoring force of the spring (615) allows the ejector rod (614) to slide away from the energy storage sliding groove (616), and the ejector block (612) slides with the movable frame (4) and engages with the ejector rod (614) to drive the ejector rod (614) to slide on the energy storage sliding groove (616), or the ejector block (612) slides with the movable frame (4) to drive the ejector rod (614) to slide away from the energy storage sliding groove (616) and separate from the ejector rod (614).

5. The flip opening and closing device with buffering function according to claim 1, characterized in that: The buffer damper (62) is mounted on the lower part of the fixing frame (3), and the damping push rod of the buffer damper (62) is provided with a connecting slider (621) connected to the lower swing end of the second positioning rod (73), and the fixing frame (3) is provided with an air avoidance groove for limiting the linear sliding of the connecting slider (621).

6. The flip opening and closing device with buffering function according to claim 1, characterized in that: The upper end of the fixed frame (3) is provided with a bending portion (31) for supporting the push-pull assembly (61), and a limiting guide groove (81) is formed between the bending portion (31) and the outer side of the fixed rail of the slide rail (5).

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