Buffered anti-pinch drawer slide

Abstract

The utility model relates to the technical field of slide rail assembly, and disclose buffer anti -pinch hand drawer slide rail, including the slide rail board no.

Description

Technical Field

[0001] This utility model relates to the field of slide rail assembly technology, and more specifically, to a buffer anti-pinch drawer slide rail. Background Technology

[0002] Drawer slides are hardware components used to support and guide the smooth opening and closing of drawers. They are usually composed of tracks, ball bearings, or pulleys, ensuring stable load-bearing capacity and smooth sliding. Their structures are divided into side-mounted, bottom-mounted, and other types. They have extended functions such as buffering and self-closing. They are made of metal or engineering plastics and have been surface-treated to enhance wear resistance. They are widely used in furniture, cabinets, and office facilities, directly affecting the user experience and product lifespan. They are key accessories for improving the functionality of furniture.

[0003] A search revealed a drawer slide with publication number CN210300216U. The background section addressed the issues of existing drawers using a single slide rail for pulling out, which resulted in short lifespan and safety concerns. The solution described involved adding mounting plates, a frame, an upper slide bar, a lower stabilizing bar, and rolling elements. However, the technology still posed a risk of pinching the user's fingers when closing the drawer forcefully due to the high sliding speed of the slide rail. Therefore, improvements were needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a buffer anti-pinch drawer slide, which has the advantage of preventing hand pinching.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a buffer anti-pinch drawer slide rail, comprising a first slide rail plate, a second slide rail plate movably connected to the front side of the inner surface of the first slide rail plate, a first baffle plate fixedly connected to the front surface of the second slide rail plate, a third slide rail plate movably connected to the rear surface of the first baffle plate, a trapezoidal block fixedly connected to the front surface of the third slide rail plate, a mounting block located to the left of the trapezoidal block fixedly connected to the upper surface of the first slide rail plate, a first oil box fixedly connected to the right surface of the mounting block, and a first oil box... A second oil box is fixedly connected to the first oil box. A first piston plate is movably sleeved on the inner surface of the first oil box. A connecting block is fixedly connected to the middle of the upper surface of the first piston plate. A second piston plate is fixedly connected to the upper surface of the connecting block. The outer surface of the second piston plate is movably sleeved with the inner surface of the first oil box. Oil passage holes are opened on the outer surfaces of both the first and second piston plates. A push rod is fixedly connected to the lower surface of the first piston plate. The bottom end of the push rod passes through the first oil box and extends below the first oil box and is movably connected to the outer surface of the trapezoidal block.

[0006] As a preferred technical solution of this utility model, a vertical groove is provided on the right surface of the No. 1 oil box, and a fine thread rod located between the No. 1 piston plate and the No. 2 piston plate is movably sleeved on the inner surface of the connecting block, and the outer surface of the fine thread rod is movably connected to the inner surface of the vertical groove.

[0007] As a preferred technical solution of this utility model, the outer surface of the fine thread rod is threaded with U-shaped blocks located on the front and rear sides of the connecting block. There are two U-shaped blocks. The outer surfaces of the two U-shaped blocks are movably connected to the inner surface of the first oil box, the upper surfaces of the two U-shaped blocks are movably connected to the lower surface of the second piston plate, and the lower surfaces of the two U-shaped blocks are movably connected to the upper surface of the first piston plate.

[0008] As a preferred technical solution of this utility model, short grooves are provided on the outer surfaces of both the upper and lower sides of the No. 2 oil box, and a sealing frame is movably connected to the outer surfaces of both the upper and lower sides of the No. 2 oil box. A worm gear is movably sleeved on the upper surface of the sealing frame, and the bottom end of the worm gear passes through the sealing frame and extends to the lower side of the sealing frame. The outer surface of the worm gear and the inner surface of the short groove are movably connected.

[0009] As a preferred technical solution of this utility model, a worm gear located inside a second oil box is movably connected to the right surface of the first oil box. The inner surface of the worm gear and the outer surface of the fine thread rod are fixedly sleeved. A guide post is fixedly connected to the right surface of the second oil box. The right end of the guide post passes through the enclosure and extends to the right surface of the enclosure. The outer surface of the guide post and the inner surface of the enclosure are movably sleeved.

[0010] As a preferred embodiment of this utility model, a spring is movably sleeved on the outer surface of the guide post, the right end of the spring is fixedly connected to the closing frame, and the left end of the spring is fixedly connected to the No. 2 oil box.

[0011] As a preferred embodiment of this utility model, a fixing block is fixedly connected to the front surface of the No. 3 slide rail plate, and a No. 2 baffle located inside the No. 3 slide rail plate is fixedly connected to the rear side of the inner surface of the No. 2 slide rail plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a trapezoidal block, a first oil box, a second oil box, a first piston plate, and a push rod. When the operator closes the drawer, they push the third slide rail connected to the drawer, causing the entire third slide rail to move towards the push rod. When the third slide rail and the trapezoidal block move forward and contact the push rod, a portion of the kinetic energy of the third slide rail is transferred to the push rod. Simultaneously, the push rod moves upward under the influence of the trapezoidal block. During this process, the first and second piston plates agitate the viscous oil, converting the kinetic energy transferred from the third slide rail into the internal energy of the viscous oil. This achieves a damping effect on the third slide rail, preventing the slide rail from sliding too fast and causing fingers to be pinched. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the back of this utility model;

[0016] Figure 3 This is a cross-sectional view of the No. 1 oil box of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the fine-pitch threaded rod of this utility model;

[0018] Figure 5 This is a cross-sectional structural diagram of the worm gear of this utility model;

[0019] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. No. 1 slide rail plate; 2. No. 2 slide rail plate; 3. No. 1 baffle; 4. No. 3 slide rail plate; 5. Trapezoidal block; 6. Mounting block; 7. No. 1 oil box; 8. No. 2 oil box; 9. No. 1 piston plate; 10. Connecting block; 11. No. 2 piston plate; 12. Top rod; 13. Vertical groove; 14. Fine thread rod; 15. U-shaped block; 16. Worm gear; 17. Short groove; 18. Enclosed frame; 19. Worm; 20. Guide column; 21. Spring; 22. Oil passage hole; 23. No. 2 baffle; 24. Fixing block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 6 As shown, this utility model provides a buffer anti-pinch drawer slide rail, including a first slide rail plate 1, a second slide rail plate 2 movably connected to the front side of the inner surface of the first slide rail plate 1, a first baffle 3 fixedly connected to the front surface of the second slide rail plate 2, a third slide rail plate 4 movably connected to the rear surface of the first baffle 3, a trapezoidal block 5 fixedly connected to the front surface of the third slide rail plate 4, a mounting block 6 located to the left of the trapezoidal block 5 fixedly connected to the upper surface of the first slide rail plate 1, a first oil box 7 fixedly connected to the right surface of the mounting block 6, a second oil box 8 fixedly connected to the rear surface of the first oil box 7, a first piston plate 9 movably sleeved on the inner surface of the first oil box 7, a connecting block 10 fixedly connected to the middle of the upper surface of the first piston plate 9, and a second piston plate 10 fixedly connected to the upper surface of the connecting block 10. 1. The outer surface of the second piston plate 11 is movably connected to the inner surface of the first oil box 7. Both the outer surfaces of the first piston plate 9 and the second piston plate 11 are provided with oil passage holes 22. The lower surface of the first piston plate 9 is fixedly connected to a push rod 12. The bottom end of the push rod 12 passes through the first oil box 7 and extends below the first oil box 7 and is movably connected to the outer surface of the trapezoidal block 5. The first oil box 7 and the second oil box 8 are filled with viscous oil. When the third slide rail plate 4 and the trapezoidal block 5 start to move forward and contact the push rod 12, part of the kinetic energy of the third slide rail plate 4 will be transferred to the push rod 12, so that the push rod 12 will start to move upward under the drive of the trapezoidal block 5, thereby causing the first piston plate 9 and the second piston plate 11 to start to stir the viscous oil inside the first oil box 7.

[0023] Among them, the right surface of the No. 1 oil box 7 is provided with a vertical groove 13, and the inner surface of the connecting block 10 is movably sleeved with a fine thread rod 14 located between the No. 1 piston plate 9 and the No. 2 piston plate 11. The outer surface of the fine thread rod 14 and the inner surface of the vertical groove 13 are movably connected. The design of the connecting block 10 and the fine thread rod 14 allows the fine thread rod 14 to rotate around the inner surface of the connecting block 10 as the axis. At the same time, the thread design of the fine thread rod 14 has a self-locking function.

[0024] The fine-threaded rod 14 has two U-shaped blocks 15 located on the front and rear sides of the connecting block 10. The outer surfaces of the two U-shaped blocks 15 are movably connected to the inner surface of the first oil box 7, the upper surfaces of the two U-shaped blocks 15 are movably connected to the lower surface of the second piston plate 11, and the lower surfaces of the two U-shaped blocks 15 are movably connected to the upper surface of the first piston plate 9. The design of the two U-shaped blocks 15 causes the two U-shaped blocks 15 to start moving towards each other when the fine-threaded rod 14 rotates. At this time, the oil channel formed by the two U-shaped blocks 15 and the oil passage 22 will gradually narrow, thereby controlling the overall movement speed of the first piston plate 9 in the viscous oil.

[0025] The No. 2 oil box 8 has short grooves 17 on both the upper and lower outer surfaces. The upper and lower outer surfaces of the No. 2 oil box 8 are movably connected to the sealing frame 18. The upper surface of the sealing frame 18 is movably sleeved with a worm gear 19. The bottom end of the worm gear 19 passes through the sealing frame 18 and extends to the lower side of the sealing frame 18. The outer surface of the worm gear 19 and the inner surface of the short groove 17 are movably connected. The design of the sealing frame 18 restricts the rotation of the worm gear 19, while the design of the short groove 17 allows the worm gear 19 and the sealing frame 18 to move left and right along the inner surface of the short groove 17. At the same time, the sealing frame 18 can also block the short groove 17.

[0026] Among them, the right surface of the No. 1 oil box 7 is movably connected to the worm gear 16 located inside the No. 2 oil box 8. The inner surface of the worm gear 16 is fixedly sleeved with the outer surface of the fine thread rod 14. The right surface of the No. 2 oil box 8 is fixedly connected to the guide post 20. The right end of the guide post 20 passes through the enclosure frame 18 and extends to the right surface of the enclosure frame 18. The outer surface of the guide post 20 is movably sleeved with the inner surface of the enclosure frame 18. When the operator starts to pull the enclosure frame 18, causing the enclosure frame 18 and the worm 19 to start to move, the design of the guide post 20 plays a guiding role in the overall movement direction of the enclosure frame 18, and the worm gear 16 can mesh with the worm 19.

[0027] Among them, a spring 21 is movably sleeved on the outer surface of the guide post 20. The right end of the spring 21 is fixedly connected to the closed frame 18, and the left end of the spring 21 is fixedly connected to the second oil box 8. The design of the spring 21 plays a role in resetting the closed frame 18 as a whole, thereby ensuring that the worm 19 will not always remain in mesh with the worm wheel 16.

[0028] Among them, the front surface of the No. 3 slide rail plate 4 is fixedly connected to the fixing block 24, and the rear side of the inner surface of the No. 2 slide rail plate 2 is fixedly connected to the No. 2 baffle 23 located inside the No. 3 slide rail plate 4; when the No. 3 slide rail plate 4 is pulled out backward, the No. 2 baffle 23 will eventually contact the fixing block 24, thereby enabling the No. 2 baffle 23 and the fixing block 24 to limit the overall movement range of the No. 3 slide rail plate 4.

[0029] Working principle and usage process of this utility model:

[0030] When the user closes the drawer, causing the trapezoidal block 5 to contact the top rod 12, the top rod 12 and the first piston plate 9 will begin to move upwards. This causes a portion of the kinetic energy of the third slide rail 4 to be converted into the kinetic energy of the top rod 12. At this time, the speed of the third slide rail 4 will decrease, expanding the time window for the user to withdraw their finger. Simultaneously, as the top rod 12 moves upwards, the oil inside the first oil box 7 and the second oil box 8 will flow through the oil channel formed by the two U-shaped blocks 15 and the oil passage 22 to the bottom of the first piston plate 9. During this process, the squeezing and agitation of the viscous oil by the first piston plate 9 and the second piston plate 11 will cause the kinetic energy of the top rod 12 to be converted into the internal energy of the viscous oil. When the trapezoidal block 5 disengages from the top rod 12, the first piston plate 9 will automatically fall to the bottom of the first oil box 7 under the action of gravity.

[0031] When the user feels that the overall damping capacity of the No. 1 oil box 7 is insufficient, the user first presses the sealing frame 18 so that the sealing frame 18 contacts the worm gear 16, and then the user rotates the sealing frame 18. At this time, the rotation of the sealing frame 18 will drive the worm gear 16, thereby causing the worm gear 16 and the fine thread rod 14 to start rotating. At this time, the rotation of the fine thread rod 14 will drive the two U-shaped blocks 15, causing the two U-shaped blocks 15 to start moving towards each other. At the same time, the oil channel formed by the two U-shaped blocks 15 and the oil passage 22 will gradually narrow. This will reduce the overall movement speed of the No. 1 piston plate 9 in the viscous oil, thereby realizing the function of adjusting the overall damping of the No. 1 oil box 7.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A buffer-type anti-pinch drawer slide, including a first slide plate (1), characterized in that: The front side of the inner surface of the first slide rail plate (1) is movably connected to the second slide rail plate (2). The front surface of the second slide rail plate (2) is fixedly connected to the first baffle plate (3). The rear surface of the first baffle plate (3) is movably connected to the third slide rail plate (4). The front surface of the third slide rail plate (4) is fixedly connected to the trapezoidal block (5). The upper surface of the first slide rail plate (1) is fixedly connected to the mounting block (6) located to the left of the trapezoidal block (5). The right surface of the mounting block (6) is fixedly connected to the first oil box (7). The rear surface of the first oil box (7) is fixedly connected to the second oil box (8). The inner surface of the first oil box (7) is movably connected to the second oil box (8). A piston plate (9) is movably connected to a first piston plate (9). A connecting block (10) is fixedly connected to the middle of the upper surface of the first piston plate (9). A second piston plate (11) is fixedly connected to the upper surface of the connecting block (10). The outer surface of the second piston plate (11) is movably connected to the inner surface of the first oil box (7). Both the outer surfaces of the first piston plate (9) and the second piston plate (11) are provided with oil passage holes (22). A push rod (12) is fixedly connected to the lower surface of the first piston plate (9). The bottom end of the push rod (12) passes through the first oil box (7) and extends below the first oil box (7) and is movably connected to the outer surface of the trapezoidal block (5).

2. The buffer anti-pinch drawer slide rail according to claim 1, characterized in that: The right surface of the No. 1 oil box (7) is provided with a vertical groove (13), and the inner surface of the connecting block (10) is movably sleeved with a fine thread rod (14) located between the No. 1 piston plate (9) and the No. 2 piston plate (11). The outer surface of the fine thread rod (14) and the inner surface of the vertical groove (13) are movably connected.

3. The buffer anti-pinch drawer slide rail according to claim 2, characterized in that: The outer surface of the fine thread rod (14) is threaded with U-shaped blocks (15) located on the front and rear sides of the connecting block (10). There are two U-shaped blocks (15). The outer surfaces of the two U-shaped blocks (15) are movably connected to the inner surface of the first oil box (7). The upper surfaces of the two U-shaped blocks (15) are movably connected to the lower surface of the second piston plate (11). The lower surfaces of the two U-shaped blocks (15) are movably connected to the upper surface of the first piston plate (9).

4. The buffer anti-pinch drawer slide rail according to claim 1, characterized in that: Short grooves (17) are provided on the outer surfaces of both the upper and lower sides of the No. 2 oil box (8). A sealing frame (18) is movably connected to the outer surfaces of both the upper and lower sides of the No. 2 oil box (8). A worm gear (19) is movably sleeved on the upper surface of the sealing frame (18). The bottom end of the worm gear (19) passes through the sealing frame (18) and extends to the lower side of the sealing frame (18). The outer surface of the worm gear (19) and the inner surface of the short groove (17) are movably connected.

5. The buffer anti-pinch drawer slide rail according to claim 1, characterized in that: The right surface of the first oil box (7) is movably connected to a worm gear (16) located inside the second oil box (8). The inner surface of the worm gear (16) and the outer surface of the fine thread rod (14) are fixedly sleeved. The right surface of the second oil box (8) is fixedly connected to a guide post (20). The right end of the guide post (20) passes through the enclosure frame (18) and extends to the right surface of the enclosure frame (18). The outer surface of the guide post (20) and the inner surface of the enclosure frame (18) are movably sleeved.

6. The buffer anti-pinch drawer slide rail according to claim 5, characterized in that: A spring (21) is movably sleeved on the outer surface of the guide post (20). The right end of the spring (21) is fixedly connected to the closing frame (18), and the left end of the spring (21) is fixedly connected to the second oil box (8).

7. The buffer anti-pinch drawer slide rail according to claim 1, characterized in that: A fixing block (24) is fixedly connected to the front surface of the No. 3 slide rail plate (4), and a No. 2 baffle (23) located inside the No. 3 slide rail plate (4) is fixedly connected to the rear side of the inner surface of the No. 2 slide rail plate (2).

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