A mute type slide rail

Abstract

The application relates to a mute type sliding rail, which comprises an inner rail, a middle rail sliding against the inner rail, an outer rail sliding against the middle rail, a rebound device arranged at one end of the outer rail, a position limiter fixed at the end of the outer rail, a guide groove arranged on the position limiter, a sliding block moving along the guide groove, a lock stopper moving in the outer rail along with the sliding block, a push block arranged on the inner rail and capable of locking the movement of the sliding block, a mute pad arranged at the position corresponding to the locking end of the lock stopper of the position limiter, and a rebound groove arranged at the position corresponding to the unlocking end of the lock stopper. The mute pad is arranged on the position limiter, the buffer in the locking stage is realized, and the maintenance of the mute pad can be conveniently replaced by only dismounting the position limiter.

Description

Technical Field

[0001] This application relates to the field of slide rail technology, specifically to a silent slide rail technology. Background Technology

[0002] Drawer slides, widely used in furniture, cabinets, refrigerators, and various sliding mechanisms, typically consist of an inner rail, a middle rail, and an outer rail. The smooth opening and closing of drawers or doors is achieved through the relative sliding of these three components. However, during the locking and unlocking processes of traditional drawer slides, the rigid collision between the moving parts and the limiting structure often generates noticeable impact noise, affecting the user experience.

[0003] The common practice in the industry is to introduce springs, rubber pads, or other elastic buffer elements to absorb impact energy, slow down the locking speed, and thus achieve a silent effect.

[0004] However, assembling elastic elements typically requires additional positioning structures or fasteners, leading to a more complex overall assembly process, reduced production efficiency, and increased difficulty in installation and maintenance. Furthermore, the added components make the overall structure of the slide rail more complex, increasing material and manufacturing costs. Summary of the Invention

[0005] To address the aforementioned issues, this application proposes a silent slide rail, which aims to achieve smooth and low-noise locking and unlocking while simplifying installation and maintenance by optimizing the inter-rail limiting method and introducing an adaptive buffer mechanism.

[0006] To achieve the above objectives, the present application adopts the following technical solution: This application proposes a silent slide rail, including an inner rail, a middle rail that slides relative to the inner rail, and an outer rail that slides relative to the middle rail, wherein one end of the outer rail is provided with a spring-back device; The rebound device includes a limiter fixed to the end of the outer rail, the limiter having a guide groove, and a slider that moves along the guide groove and a lock that moves with the slider within the outer rail. The inner rail has a lever that can lock the slider's movement. The limiter has a sound-silencing pad at the corresponding position of the locking end of the locker, and a spring-loaded groove at the corresponding position of the unlocking end of the locker.

[0007] In this way, the existing limiter structure can be utilized, and a noise-reducing pad can be incorporated into the limiter to provide cushioning during the locking phase. Furthermore, maintenance of the noise-reducing pad can be easily achieved by simply disassembling the limiter. Simultaneously, a spring-loaded groove is provided at the unlocking end of the lock, eliminating the need for additional parts and ensuring low noise during pull-out unlocking. Moreover, the entire structure does not use springs or other components that present assembly difficulties, retaining the existing structural features and making it easy to assemble.

[0008] In some possible implementations, the back of the limiter is provided with a mounting groove, and the sound-silencing pad is disposed in the mounting groove.

[0009] In some possible implementations, the guide groove includes a locking portion and a releasing portion, and the springback groove is disposed on the outer periphery of the releasing portion.

[0010] In some possible implementations, the disengagement portion is an arc-shaped structure, and the springback groove at least covers a portion of the arc-shaped structure.

[0011] In some possible implementations, an isolation rib is provided between the disengagement portion and the springback groove, and the width of the springback groove is not less than the width of the isolation rib.

[0012] In some possible implementations, the limiter may further include a limiting rib disposed on the locking portion.

[0013] In some possible implementations, the locking device is provided with an unlocking groove corresponding to the unlocking portion.

[0014] In some possible implementations, the locking device has a guide arm on the side corresponding to the locking position.

[0015] In some possible implementations, the lever is provided with a guide groove and a first limiting groove and a second limiting groove. Attached Figure Description

[0016] Figure 1 This is an exploded schematic diagram of the slide rail in this application; Figure 2 This is an exploded schematic diagram of the inner rail in this application; Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is an explosion diagram of the rebound device in this application; Figure 5 This is a diagram showing the positional relationship between the rebound device and the lever block from the inner rail side in this application. Figure 6 This is a diagram showing the positional relationship between the rebound device and the lever block from the outer rail side in this application. Detailed Implementation

[0017] The following examples further illustrate the features of this application and other related features in detail, so as to facilitate understanding by those skilled in the art: It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions in the attached diagrams, while the terms “bottom surface,” “top surface,” “inner,” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0018] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this case based on the specific circumstances.

[0019] Please refer to Figures 1 to 3 The silent slide rail of this application includes an outer rail 1, a middle rail 2, and an inner rail 3. The outer rail 1 and the middle rail 2 slide relative to each other, and the middle rail 2 and the inner rail 3 slide relative to each other. A spring-loaded device 4 is provided at one end of the outer rail 1. First, the outer rail 1 is provided with a first ball bearing guide rail 11. The first ball bearing guide rail 11 is blocked and limited on the inner side by the first folded edge 12 of the outer rail 1, and is blocked and limited on the outer side by the spring-loaded device 4. Both the outer rail 1 and the middle rail 2 are provided with guide rails 13, the function of which is to allow the middle rail 2 to slide within the outer rail 1 and to allow the middle rail 2 to slide relative to the inner rail 3. Therefore, the guide rails 13 are marked with the same designation. When the middle rail 2 slides within the outer rail 1, its outer limit is achieved by the spring-loaded device 4, while its inner limit is achieved by the protrusions 21 provided on the inner periphery of the middle rail 2 being pushed against by the first ball bearing guide rail 11 when pulled outward.

[0020] Furthermore, the middle rail 2 is provided with a second ball bearing guide rail 22. The second ball bearing guide rail 22 is limited on the outside by a second folded edge 23, while the limited on the inside is limited by a first sealing edge 24. The first sealing edge 24 can be sealed on the inside of the middle rail 2 by snap-fit, which is a common technical means in the industry and will not be illustrated in detail.

[0021] Furthermore, the middle rail 2 slides relative to the inner rail 1. The back of the inner rail 1 is connected to the connector 5, which is the part connected to the cabinet, etc. The inner side of the inner rail 3 is provided with a second sealing edge 31. An anti-detachment block 32 is provided on the inner rail 3. The anti-detachment block 32 is connected to the inner rail 3 by an elastic pin 6 and is blocked on the inner side by the protrusion 241 of the first sealing edge 24. A lever block 33 is provided on the outer side of the anti-detachment block 32. The lever block 33 is also connected to the inner rail 3 by an elastic pin 6. Locking and unlocking are achieved by the lever block 33 and the rebound device 4. At this time, there will be contact and collision noise during locking and unlocking.

[0022] Please refer to the reference. Figure 2 and Figures 4 to 6The rebound device 4 includes a limiter 41 fixed to the end of the outer rail 1, the limiter 41 having a guide groove 411. The limiter 41 is inserted into the guide rail 13 of the inner rail 1 and fixed by snap-fit. Multiple buckles 412 are provided on its back; this method of fixing by buckles 412 is a common industry practice and will not be described in detail, nor is the shape of the buckles 412 restricted. It also includes a slider 42 that moves along the guide groove 411. The slider 42 has a sliding post 421 and a rotating hole 422. The sliding post 421 fits into the guide groove 411 and moves within it. A locking device 43 can move within the outer rail 1 along with the slider 42. The locking device 43 has a positioning post 431 that fits into the rotating hole 422. A lever 33 is fixed to the inner rail 3. The slider 42 moves with the outer rail 1, so that the outer rail 1 is locked by the lever 33 and the rebound device 4.

[0023] Furthermore, the limiter 41 is provided with a sound-absorbing pad 413 at the corresponding position of the locking end of the locker 43. The sound-absorbing pad 413 is a silicone anti-collision and shock-absorbing pad. Its detachable design specifically includes a mounting groove 414 on the back of the limiter 41, within which the sound-absorbing pad 413 is placed. Thus, its installation requires no additional work and can be completed simultaneously with the conventional installation of the limiter 41. The locking end, as described above, refers to the position where the locker 43 moves with the slider 42 to the locking position.

[0024] The limiter 41 has a spring-loaded groove 415 at the unlocking end of the lock 43, where the unlocking end refers to the position where the lock 43 moves with the slider 42 and disengages from the inner rail 3. Specifically, the guide groove 411 includes a locking part 4111 and a releasing part 4112, and the spring-loaded groove 415 is disposed on the outer periphery of the releasing part 4112. Preferably, the releasing part 4112 has an arc-shaped structure, and the spring-loaded groove 415 at least covers the arc-shaped structure portion.

[0025] Corresponding to the arc-shaped structure, the toggle block 33 is provided with a guide groove 331, a first limiting groove 332, and a second limiting groove 333. That is, when the slider 42 is in the locking position 4111, the toggle block 33 is in the second limiting groove 333. To unlock, it needs to be moved to the unlocking part 4112 to unlock through the guide groove 331. The locking process is the same. After the unlocking part 4112 enters the guide groove 331, it goes to the second limiting groove 333 and then slides into the locking part 4111. The first limiting groove 332 serves as a safety feature.

[0026] When unlocking, the second limiting groove 333 also disappears when the slider 42 disengages from the lever 33 at the release part 4112, resulting in a collision. Therefore, the spring groove 415 at this location can mitigate the collision and achieve shock absorption and noise reduction. Preferably, an isolation rib 416 is formed between the release part 4112 and the spring groove 415, and the width of the spring groove 415 is not less than the width of the isolation rib 416, because the actual shock absorption effect is achieved by the elastic damping of the isolation rib 416 between the spring groove 415 and the guide groove 411. This preferred design ensures the strength of the entire limiter 41 while also guaranteeing shock absorption and noise reduction.

[0027] The locking device 43 is provided with an unlocking groove 432 corresponding to the unlocking part 4112. The unlocking groove 432 is also an arc-shaped structure. The positioning post 431 will fit into the rotating hole 422 of the slider 42 and rotate around the rotating hole 422 along the arc-shaped structure to cooperate with the unlocking part 4112 to complete the unlocking.

[0028] When locked, the locking device 43 has a guide arm 433 on one side of the corresponding locking position 4111. The guide arm 433 can guide the lever 33. In the locked position, the limiter 4 also includes a limiting rib 417 provided in the locking position 4111. The limiting rib 417 is open on both sides and its suspended end is inclined towards the locking position 4111. When the slider 42 slides into the locking position 4111, it can tilt towards the slider 42 and clamp the slider 42 at the same time, thereby cooperating with the second limiting groove 333 of the lever 33 to achieve locking.

[0029] In this way, the existing structure of the limiter 41 can be utilized, and a silencing pad 413 can be set in the limiter 41 to achieve buffering during the locking phase. Moreover, the maintenance of the silencing pad 413 can be easily achieved by simply disassembling the limiter 41. At the same time, a spring groove 415 is provided at the unlocking end of the locker 43, which can achieve low noise when pulling out and unlocking without adding new parts. Furthermore, the entire structure does not use parts such as springs that are difficult to assemble, and retains the existing structural features, making it easy to assemble.

[0030] As stated above, this case protects a silent slide rail, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A silent slide rail, characterized in that, It includes an inner rail (3), a middle rail (2) that slides relative to the inner rail (3), and an outer rail (1) that slides relative to the middle rail (2). One end of the outer rail (1) is provided with a spring-back device (4). The rebound device (4) includes a limiter (41) fixed to the end of the outer rail (1), the limiter (41) is provided with a guide groove (411), and also includes a slider (42) that moves along the guide groove (411) and a lock (43) that moves with the slider (42) in the outer rail (1). The inner rail (3) is provided with a lever (33) that can lock the slider (42) from moving. The limiter (41) has a sound-absorbing pad (413) at the corresponding position of the locking end of the locker (43), and a spring groove (415) at the corresponding position of the unlocking end of the locker (43).

2. The silent slide rail as described in claim 1, characterized in that, The back of the limiter (41) is provided with a mounting groove (414), and the sound-absorbing pad (413) is disposed in the mounting groove (414).

3. The silent slide rail as described in claim 1, characterized in that, The guide groove (411) includes a locking part (4111) and a releasing part (4112), and the springback groove (415) is disposed on the outer periphery of the releasing part (4112).

4. A silent slide rail as described in claim 3, characterized in that, The dislocation part (4112) has an arc-shaped structure, and the spring groove (415) at least covers the arc-shaped structure.

5. A silent slide rail as described in claim 3, characterized in that, An isolation rib (416) is provided between the disengagement part (4112) and the spring groove (415), and the width of the spring groove (415) is not less than the width of the isolation rib (416).

6. A silent slide rail as described in claim 3, characterized in that, The limiter (41) also includes a limiting rib (417) disposed on the locking part (4111).

7. A silent slide rail as described in claim 4, characterized in that, The locking device (43) is provided with an unlocking slot (432) corresponding to the unlocking part (4112).

8. A silent slide rail as described in claim 7, characterized in that, The locking device (43) has a guide arm (433) on the side corresponding to the locking position (4111).

9. A silent slide rail as described in claim 1, characterized in that, The push block (33) is provided with a guide groove (331), a first limiting groove (332), and a second limiting groove (333).

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