Drawer sliding rail

Abstract

The utility model relates to a drawer sliding rail which comprises an outer rail, a middle rail and an inner rail. The outer rail is provided with a first sliding groove, one end of the outer rail is provided with a first elastic piece formed through punching, and at least one part of the first elastic piece is located in the first sliding groove. The middle rail is arranged in the first sliding groove in a sliding mode, and a second sliding groove is formed in the middle rail. The inner rail is arranged in the second sliding groove in a sliding mode. When the middle rail and the inner rail move in the first direction to abut against the first elastic piece, the inner rail and the middle rail are blocked through the first elastic piece. According to the drawer sliding rail, the drawer can be well buffered, the production efficiency is high, and the production cycle of the drawer sliding rail can be effectively shortened.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically to a drawer slide. Background Technology

[0002] Drawer slides, also known as drawer slides or slide rails, are hardware accessories fixed to the drawers of furniture, allowing the cabinet body or cabinet panel to move in and out. Drawer slides are suitable for connecting the cabinet bodies of wooden or steel cabinets such as cabinets, furniture, filing cabinets, and bathroom cabinets. The main types of drawer slides are roller slides, ball bearing slides, gear slides, and damping slides.

[0003] Traditional drawer slides can be divided into two-section and three-section slides based on whether they are fully extended. Three-section slides consist of an outer rail, a middle rail, and an inner rail connected together. In use, the drawer is fixed to the inner rail, while the outer rail is fixed to the cabinet panel, thus achieving a sliding connection between the drawer and the cabinet panel, allowing the drawer to be pulled out or retracted. To reduce the impact force between the inner, middle, and outer rails during drawer retraction, the slides are usually equipped with buffer components. For example, Chinese Patent Publication No. CN112890475B discloses a "Clamping Block and Drawer Slide Assembly," which uses a clamping block at the end of the outer rail so that the inner and middle rails can abut against the clamping block when retracted. This clamping block provides a buffer force for the inner and middle rails, thereby improving the overall service life of the slide. However, a problem with this type of slide assembly is that the clamping block often needs to be manually installed onto the outer rail, resulting in low installation efficiency and extending the production cycle of the slide.

[0004] Therefore, it is necessary to provide a technical solution to this problem. Utility Model Content

[0005] To address the problem that young children may accidentally open drawers in existing technologies, this utility model provides a drawer slide, including an outer rail, a middle rail, and an inner rail;

[0006] The outer rail is provided with a first groove, and one end of the outer rail is provided with a stamped first spring piece, at least a portion of which is located in the first groove; the middle rail is slidably disposed in the first groove, and the middle rail is provided with a second groove; the inner rail is slidably disposed in the second groove.

[0007] When the middle rail and the inner rail move along the first direction to abut against the first spring, the inner rail and the middle rail are stopped by the first spring.

[0008] In some embodiments, a stamped second spring is provided at one end of the middle rail near the first spring, and at least a portion of the second spring is located in the second groove; when the inner rail moves along the first direction to abut against the second spring and the middle rail abuts against the first spring, the inner rail is stopped by the second spring.

[0009] In some embodiments, the cross-section of the first spring and / or the second spring is V-shaped or arc-shaped.

[0010] In some embodiments, at least two first springs are provided, and the end of the central rail can pass over at least one first spring and abut against another first spring.

[0011] In some embodiments, at least two second springs are provided, and the end of the inner rail is capable of passing over at least one second spring and abutting against another second spring.

[0012] In some embodiments, the surfaces of the first spring and / or the second spring are provided with anti-wear portions.

[0013] In some embodiments, the anti-wear part is an anti-wear coating or a rubber pad.

[0014] In some embodiments, the first spring is formed on the bottom or side surface of the first groove; the second spring is formed on the bottom or side surface of the second groove.

[0015] In some embodiments, reinforcement portions are formed on the outer rail and / or the middle rail.

[0016] In some embodiments, the reinforcing portion is stamped onto the outer rail and / or the middle rail.

[0017] Compared with the prior art, the drawer slide rail involved in this utility model has the following advantages:

[0018] This application uses a first spring to stop the middle and inner rails so that the drawer can achieve elastic buffering force when it retracts, reducing the impact force on the drawer when it retracts, thereby extending the service life of the slide rails and drawers. In addition, the first spring is stamped on the outer rail, which has extremely high production efficiency and can effectively shorten the production cycle of the slide rails. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a drawer slide rail in its retracted state, as described in this utility model.

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of a drawer slide rail in its retracted state from another perspective, according to this utility model.

[0022] Figure 4 This is a structural schematic diagram of a drawer slide rail in its unfolded state, as described in this utility model.

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the middle rail in a drawer slide rail according to this utility model;

[0026] Figure 8 for Figure 7 Enlarged view of point D in the middle;

[0027] Figure 9 for Figure 7 Enlarged schematic diagram at point F in the middle.

[0028] Figure label:

[0029] 1. Outer rail; 2. Middle rail; 3. Inner rail; 4. Reinforcing section;

[0030] 11. First sliding groove; 12. First spring piece; 13. First fixing plate; 14. First vertical wall panel;

[0031] 21. Second slide groove; 22. Second spring sheet; 23. Second fixing plate; 24. Second vertical wall panel; 25. Limiting block; 251. Elastic part;

[0032] 31. Stopping part. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component at the same time; when a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component at the same time.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of the embodiments of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0037] To address the issue of long production cycles for existing drawer slides, this embodiment provides a drawer slide, comprising an outer rail 1, a middle rail 2, and an inner rail 3.

[0038] The outer rail 1 is provided with a first groove 11, and one end of the outer rail 1 is provided with a stamped first spring piece 12, at least a portion of the first spring piece 12 is located in the first groove 11; the middle rail 2 is slidably disposed in the first groove 11, and the middle rail 2 is provided with a second groove 21; the inner rail 3 is slidably disposed in the second groove 21.

[0039] When the middle rail 2 and the inner rail 3 move along the first direction to abut against the first spring plate 12, the inner rail 3 and the middle rail 2 are stopped by the first spring plate 12.

[0040] In this embodiment, the drawer slide rail is used by connecting the outer rail 1 to the table frame and the inner rail 3 to the drawer, so that the drawer slides on the table frame. In this embodiment, the direction of movement when the drawer retracts is defined as the first direction. That is, when the drawer retracts, the inner rail 3 and the middle rail 2 will move along the first direction until the inner rail 3 and the middle rail 2 both abut against the first spring 12. The first spring 12 will apply an elastic force to the inner rail 3 and the middle rail 2 opposite to the first direction, so that the moving speed of the drawer gradually decreases until the drawer stops. That is, by setting the first spring 12, the impact force on the drawer when it retracts can be reduced, thereby extending the service life of the slide rail and the drawer. In addition, since the first spring 12 is stamped and formed on the outer rail 1, the production efficiency is high and the production cycle of the slide rail can be effectively shortened.

[0041] In some embodiments, the middle rail 2 has a stamped second spring 22 at one end near the first spring 12, with at least a portion of the second spring 22 within the second groove 21. When the inner rail 3 moves along the first direction to abut against the second spring 22, and the middle rail 2 abuts against the first spring 12, the inner rail 3 is stopped by the second spring 22. By using the first spring 12 to stop the middle rail 2 and then using the second spring 22 to stop the inner rail 3, the buffering effect when the drawer retracts is better. This design also reduces the processing requirements of the first spring 12 and the second spring 22, thereby improving production efficiency and yield.

[0042] In some embodiments, the cross-section of the first spring 12 and / or the second spring 22 is V-shaped or arc-shaped. Furthermore, one end of the first spring 12 is connected to the outer rail 1, and the other end is disconnected from the outer rail 1; one end of the second spring 2 is connected to the middle rail 2, and the other end is disconnected from the middle rail 2. This allows the first spring 12 to initially apply a small elastic force to the middle rail 2 during contact, thereby initially reducing the moving speed of the middle rail 2. Once the first spring 12 undergoes elastic deformation until its end abuts against the outer rail 1 or the wall of the table frame, the elastic force applied by the first spring 12 to the middle rail 2 will further increase, thereby further reducing the moving speed of the drawer until it stops completely. The function of the second spring 22 is similar and will not be elaborated here. This design makes the drawer's buffering and stopping process smoother.

[0043] In some embodiments, at least two first spring clips 12 are provided, and the end of the center rail 2 can pass over at least one first spring clip 12 and abut against the other first spring clip 12. With this design, the moving speed of the center rail 2 can be initially slowed down by at least one first spring clip 12, and then the center rail 2 can be completely stopped by the other first spring clip 12; thus, the buffer stopping process of the drawer can be made smoother.

[0044] In some embodiments, at least two second springs 22 are provided, and the end of the inner rail 3 can pass over at least one second spring 22 and abut against the other second spring 22. With this design, the moving speed of the inner rail 3 can be initially slowed down by at least one second spring 22, and then the inner rail 3 can be completely stopped by the other second spring 22; thus, the buffering and stopping process of the drawer can be made smoother.

[0045] To further explain, after the end of the middle rail 2 passes the first spring 12, the first spring 12 will press against the surface of the middle rail 2, so that the friction force on the middle rail 2 will increase, that is, increase the moving resistance of the middle rail 2; the same applies to the cooperation between the inner rail 3 and the second spring 22; in this way, after the drawer is retracted, it will be more difficult to open it again, which can reduce the risk of the drawer being opened accidentally.

[0046] In some embodiments, the surfaces of the first spring 12 and / or the second spring 22 are provided with anti-wear parts, which can be anti-wear coatings or rubber pads, etc. In this way, the frictional loss generated when the middle rail 2 contacts the first spring 12 and the frictional loss generated when the inner rail 3 contacts the second spring 22 can be reduced, thereby improving the service life of the drawer slide.

[0047] In some embodiments, the outer rail 1 includes a first fixed plate 13 and two first vertical wall plates 14, the first slide groove 11 is formed by the first fixed plate 13 and the two first vertical wall plates 14, and the first spring piece 12 can be formed on the first fixed plate 13 or on the first vertical wall plate 14.

[0048] In some embodiments, the middle rail 2 includes a second fixed plate 23 and two second vertical wall plates 24, the second slide groove 21 is surrounded by the second fixed plate 23 and the two second vertical wall plates 24, and the second spring piece 22 can be formed on the second fixed plate 23 or on the second vertical wall plate 24.

[0049] In some embodiments, a reinforcing portion 4 is formed on the outer rail 1 and / or the middle rail 2; the reinforcing portion 4 may be a concave structure stamped into the outer rail 1 and / or the middle rail 2. This design can improve the strength of the outer rail 1 and the middle rail 2, reduce the risk of damage to the outer rail 1 and the middle rail 2 during use, and extend the service life of the drawer slide.

[0050] In some embodiments, the inner rail 3 has a bent stop 31 at the end away from the first spring piece 12; when the drawer is retracted, the stop 31 can abut against the end of the middle rail 2, thereby driving the middle rail 2 to move.

[0051] In some embodiments, a limiting block 25 is installed at the end of the middle rail 2 away from the first spring piece 12, and an elastic part 251 is formed on the limiting block 25. The elastic part 251 is used to contact the stop part 31, thereby avoiding rigid collision between the inner rail 3 and the middle rail 2, reducing the risk of damage to the drawer slide rail, and extending the service life of the drawer slide rail.

[0052] The above description is only a preferred embodiment of the present utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drawer slide, characterized in that, include: An outer rail is provided with a first groove, and a stamped first spring piece is provided at one end of the outer rail, with at least a portion of the first spring piece located in the first groove. A middle rail, which is slidably disposed within the first sliding groove, and a second sliding groove is provided on the middle rail; The inner rail is slidably disposed within the second groove; When the middle rail and the inner rail move along the first direction to abut against the first spring, the inner rail and the middle rail are stopped by the first spring.

2. The drawer slide according to claim 1, characterized in that: The middle rail is provided with a stamped second spring sheet at one end near the first spring sheet, and at least a portion of the second spring sheet is located in the second groove; When the inner rail moves along the first direction to abut against the second spring plate, and the middle rail abuts against the first spring plate, the inner rail is stopped by the second spring plate.

3. The drawer slide according to claim 2, characterized in that: The cross-section of the first spring and / or the second spring is V-shaped or arc-shaped.

4. The drawer slide according to claim 1, characterized in that: The first spring is provided in at least two, and the end of the middle rail can pass over at least one first spring and abut against another first spring.

5. A drawer slide according to claim 2, characterized in that: The second spring is provided in at least two, and the end of the inner rail can pass over at least one second spring and abut against another second spring.

6. A drawer slide according to claim 2, characterized in that: The surfaces of the first spring and / or the second spring are provided with anti-wear parts.

7. A drawer slide according to claim 6, characterized in that: The wear-resistant part is a wear-resistant coating or a rubber pad.

8. A drawer slide according to claim 2, characterized in that: The first spring is formed on the bottom or side surface of the first groove; the second spring is formed on the bottom or side surface of the second groove.

9. A drawer slide according to claim 1, characterized in that: A reinforcing section is formed on the outer rail and / or the middle rail.

10. A drawer slide according to claim 9, characterized in that: The reinforcing part is stamped and formed on the outer rail and / or the middle rail.

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