Two-way pull-out sliding rail and two-way pull-out drawer applying same

Abstract

The utility model discloses a two-way pull-out sliding rail and a two-way pull-out drawer using the same, and belongs to the technical field of sliding rails. The bidirectional pull-out sliding rail comprises a fixed rail and a movable rail capable of bidirectionally sliding relative to the fixed rail, and further comprises a positioning seat and a positioning pin, the positioning seat is installed on one of the fixed rail and the movable rail, the positioning pin is installed on the other one of the fixed rail and the movable rail, and when the movable rail moves to a closed position relative to the fixed rail, the positioning pin is pulled out. And the positioning seat and the positioning pin are clamped to keep the relative positions of the movable rail and the fixed rail. The positioning seat and the positioning pin are arranged on the two-way sliding rail, so that when the movable rail moves to the closed position relative to the fixed rail, the positioning seat and the positioning pin are clamped to keep the relative position of the movable rail and the fixed rail, and the stability of the two-way sliding rail in the closed state is guaranteed; and the positioning seats and the positioning pins are arranged on the sliding rails, the structure is simple, manufacturing is convenient, the precision requirement for the installation position of the drawer is lowered, and installation and use are convenient and fast.

Description

Technical Field

[0001] This utility model relates to a slide rail, and more specifically, to a two-way pull-out slide rail and a two-way pull-out drawer using the same. Background Technology

[0002] A drawer slide is a device used to guide and support the movement of objects. It provides stable guidance and support, ensuring smooth movement and reducing friction and vibration. Drawer slides are most commonly used in drawers, connecting the drawer to the cabinet. Due to the structure of the slide, most drawers can only open in one direction, not both ways, requiring the user to walk to the opening side to open the drawer. In some special situations, there is a need for drawers that can be opened from both sides of the cabinet to improve ease of use; therefore, there is a demand for developing two-way drawer slides to adapt to different scenarios.

[0003] Double-opening drawers require a closing and positioning mechanism to ensure they remain stably closed after being shut down. Currently, most existing double-opening drawers use standard double-opening slides and incorporate an additional closing and positioning structure between the drawer and the cabinet. Because this closing and positioning structure is independent of the slides themselves, it demands high precision in the relative installation positions. Chinese Patent No. ZL202221196415.7 discloses "A Novel Bidirectional Pull-Out Device for Slide Rails" (authorization announcement date: September 20, 2022). Its working principle is to modify the traditional design of the locking point positioning, which involves stamping concave points at both ends of the outer rail and convex points at both ends of the core rail to block steel balls and achieve slide rail pull-out closure positioning. Instead, it modifies this design by stamping two opposite-direction baffles at both ends of the outer rail and two opposite-direction baffles at both ends of the core rail. Two cushioning rubber plugs are installed at both ends of the ball cage. This creates a closed loop of pull-out blocking positioning formed by the bent baffle at the pull-out end of the outer rail, the bent baffle at the tail end of the core rail, and the ball cage after slide rail assembly. This solves the shortcomings of difficult-to-control stamping blocking point height and high precision requirements. However, this bidirectional pull-out device only addresses positioning after the slide rail is pulled out; it lacks positioning when the core rail and outer rail are closed. Therefore, it cannot restrict the movement of the drawer in the closed state, which can easily lead to accidental drawer opening. Summary of the Invention

[0004] 1. Technical problem to be solved by the utility model

[0005] The purpose of this utility model is to overcome the shortcomings of existing bidirectional slide rails that lack a slide rail closing and positioning function, and to provide a bidirectional pull-out slide rail and a bidirectional pull-out drawer using it. The technical solution of this utility model involves setting a positioning seat and a positioning pin on the bidirectional slide rail, so that when the movable rail moves relative to the fixed rail to the closed position, the positioning seat and positioning pin engage to maintain the relative position of the movable rail and the fixed rail, ensuring the stability of the bidirectional slide rail in the closed state. Furthermore, the positioning seat and positioning pin are set on the slide rail, resulting in a simple structure, easy manufacturing, reduced precision requirements for drawer installation position, and convenient installation and use.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] This utility model discloses a bidirectional pull-out slide rail, including a fixed rail and a movable rail capable of bidirectional sliding relative to the fixed rail, and also includes a positioning seat and a positioning pin. The positioning seat is installed on one of the fixed rail and the movable rail, and the positioning pin is installed on the other of the fixed rail and the movable rail. When the movable rail moves to the closed position relative to the fixed rail, the positioning seat and the positioning pin engage to maintain the relative position of the movable rail and the fixed rail.

[0009] Furthermore, the positioning seat is fixedly installed on the base plate of the fixed rail, and the positioning pin is fixed on the side wall of the movable rail.

[0010] Furthermore, the two ends of the positioning seat are fixedly installed in the middle of the fixed rail by screws, and the positioning pin is fixedly installed in the middle of the movable rail.

[0011] Furthermore, the positioning seat is provided with a positioning groove that matches the positioning pin, and the positioning seat is also provided with guide slopes on both sides of the positioning groove along the pulling direction of the slide rail.

[0012] Furthermore, the positioning seat has raised blocks at both ends, forming an elastic deformation space below the positioning groove and the guide slope.

[0013] Furthermore, the positioning seat is injection molded from a polymer material.

[0014] Furthermore, a ball bearing assembly is provided between the fixed rail and the movable rail. The fixed rail has a first baffle at each end, and the movable rail has a second baffle at each end. In the sliding projection direction of the slide rail, the first baffle and the second baffle are staggered and are respectively opposite to the position of the ball bearing assembly.

[0015] This utility model discloses a two-way pull-out drawer, comprising a drawer body and a cabinet body. The drawer body has drawer panels on both sides, and the cabinet body has drawer cavities with openings on both sides. The drawer body is installed in the drawer cavity using the aforementioned two-way pull-out slide rail.

[0016] 3. Beneficial effects

[0017] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0018] (1) The present invention provides a bidirectional pull-out slide rail, which includes a fixed rail and a movable rail that can slide bidirectionally relative to the fixed rail, as well as a positioning seat and a positioning pin. The positioning seat is installed on one of the fixed rail and the movable rail, and the positioning pin is installed on the other of the fixed rail and the movable rail. When the movable rail moves to the closed position relative to the fixed rail, the positioning seat and the positioning pin engage to maintain the relative position of the movable rail and the fixed rail, thus ensuring the stability of the bidirectional slide rail in the closed state. Furthermore, the positioning seat and the positioning pin are set on the slide rail, which has a simple structure, is easy to manufacture, reduces the accuracy requirements for the drawer installation position, and is convenient to install and use.

[0019] (2) The present invention provides a bidirectional pull-out slide rail, wherein the positioning seat is fixedly installed on the base plate of the fixed rail and the positioning pin is fixed on the side wall of the movable rail, which makes it easier to install the positioning seat and makes the slide rail structure more compact; the two ends of the positioning seat are fixedly installed in the middle of the fixed rail by screws and the positioning pin is fixedly installed in the middle of the movable rail, which makes the installation and operation convenient and the installation firm and reliable.

[0020] (3) A bidirectional pull-out slide rail of the present invention has a positioning groove on its positioning seat that is compatible with the positioning pin. The positioning seat also has guide slopes on both sides of the positioning groove along the pulling direction of the slide rail. The positioning pin can be smoothly guided into the positioning groove to achieve positioning and locking, thus ensuring the stability of the cooperation between the positioning pin and the positioning seat.

[0021] (4) The present invention provides a bidirectional pull-out slide rail with raised blocks at both ends of the positioning seat, forming an elastic deformation space below the positioning groove and the guide slope, so that the guide slope and the positioning groove can have a certain elasticity, and can achieve elastic engagement when cooperating with the positioning pin, which helps to reduce the resistance generated when the drawer is closed, and also makes it easy to unlock when the drawer is pulled out, making the drawer easy and effortless to pull out, and the positioning is reliable after the drawer is closed.

[0022] (5) A bidirectional pull-out slide rail of the present invention is provided with a ball assembly between the fixed rail and the movable rail. The fixed rail is provided with a first baffle at both ends and the movable rail is provided with a second baffle at both ends. In the sliding projection direction of the slide rail, the first baffle and the second baffle are staggered and are respectively opposite to the position of the ball assembly. By using the cooperation between the baffle and the ball assembly, the movable rail will not be separated from the fixed rail, so as to realize the positioning of the slide rail at the maximum bidirectional pull-out position.

[0023] (6) A two-way pull-out drawer of the present invention includes a drawer body and a cabinet body. The drawer body has drawer panels on both sides and the cabinet body has drawer cavities with openings on both sides. The drawer body is installed in the drawer cavity using the aforementioned two-way pull-out slide rail, which realizes two-way pull-out of the drawer, making it more flexible and convenient to use. Moreover, the drawer is stably positioned after being closed, effectively preventing the drawer from being opened accidentally. Attached Figure Description

[0024] Figure 1 This is a planar structural diagram of a bidirectional pull-out slide rail according to the present invention;

[0025] Figure 2 for Figure 1 A cross-sectional view along the AA direction, rotated 90° counterclockwise;

[0026] Figure 3 This is a schematic diagram of the disassembled structure of a bidirectional pull-out slide rail according to the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the pull-out state of a bidirectional pull-out slide rail according to this utility model;

[0028] Figure 5 This is a schematic diagram of an angled engagement state between the positioning pin and the positioning seat in this utility model;

[0029] Figure 6 This is a schematic diagram showing another angle of engagement between the positioning pin and the positioning seat in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of a two-way pull-out drawer in the closed state according to the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of a two-way pull-out drawer of the present invention in the right-side open state;

[0032] Figure 9 This is a schematic diagram of the structure of a two-way pull-out drawer of this utility model in the left-side open state.

[0033] Explanation of the labels in the diagram:

[0034] 1. Fixed rail; 1-1. First baffle; 2. Sliding rail; 2-1. Second baffle; 3. Positioning seat; 3-1. Positioning groove; 3-2. Guide slope; 3-3. Raising block; 4. Positioning pin; 5. Connecting ear plate; 6. Ball bearing assembly; 7. Drawer body; 8. Cabinet body. Detailed Implementation

[0035] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0036] [Example]

[0037] Combination Figure 1 and Figure 2 As shown, this embodiment of a bidirectional pull-out slide rail includes a fixed rail 1, a movable rail 2, a positioning seat 3, and a positioning pin 4. The fixed rail 1 is a relatively fixed part, while the movable rail 2 can slide bidirectionally relative to the fixed rail 1. The positioning seat 3 is installed on one of the fixed rail 1 and the movable rail 2, and the positioning pin 4 is installed on the other. That is, the positioning seat 3 can be installed on the fixed rail 1 and the positioning pin 4 on the movable rail 2, or vice versa. The positioning pin 4 can engage within the positioning seat 3. When the movable rail 2 moves to the closed position relative to the fixed rail 1, the positioning seat 3 and the positioning pin 4 engage to maintain the relative position of the movable rail 2 and the fixed rail 1, ensuring the stability of the bidirectional slide rail in the closed state. Furthermore, the positioning seat 3 and the positioning pin 4 are set on the slide rail, resulting in a simple structure, easy manufacturing, reduced accuracy requirements for drawer installation position, and convenient installation and use.

[0038] like Figure 3 and Figure 4 As shown, preferably, the positioning seat 3 is fixedly installed on the base plate of the fixed rail 1, and the positioning pin 4 is fixed on the side wall of the movable rail 2. This facilitates the installation of the positioning seat 3 and makes the structure of the slide rail more compact. Specifically, both ends of the positioning seat 3 are fixedly installed in the middle of the fixed rail 1 by screws, and the positioning pin 4 is fixedly installed in the middle of the movable rail 2. The positioning pin 4 can be riveted or welded to the movable rail 2, making installation convenient and reliable. Of course, the positions of the positioning seat 3 and the positioning pin 4 on the slide rail are not limited to the middle; they can also be set off to one side as needed, as long as it ensures that the positioning pin 4 can engage with the positioning seat 3 when the movable rail 2 and the fixed rail 1 are closed.

[0039] Reference Figure 5 and Figure 6As shown, the positioning seat 3 is provided with a positioning groove 3-1 that matches the positioning pin 4. On both sides of the positioning groove 3-1, the positioning seat 3 is also provided with guide ramps 3-2 arranged along the pulling direction of the slide rail. The guide ramps 3-2 allow the positioning pin 4 to be smoothly guided into the positioning groove 3-1 to achieve positioning and engagement, ensuring the stability of the fit between the positioning pin 4 and the positioning seat 3. The positioning groove 3-1 is U-shaped, and the guide ramps 3-2 can be designed as inclined planes, etc. The height of the guide ramps 3-2 gradually increases towards the positioning groove 3-1 to guide the positioning pin 4 to slide into the positioning groove 3-1 for engagement and positioning. In addition, the positioning seat 3 has raised blocks 3-3 at both ends, forming an elastic deformation space below the positioning groove 3-1 and the guide slope 3-2. This allows the guide slope 3-2 and the positioning groove 3-1 to have a certain degree of elasticity, enabling elastic engagement with the positioning pin 4. This helps reduce the resistance generated when the drawer closes and also makes it easy to unlock when the drawer is pulled out, making the drawer operation easy and effortless, and ensuring reliable positioning after the drawer is closed. When the drawer closes, the positioning pin 4 can compress the guide slope 3-2, causing it to deform. When the positioning pin 4 moves to the position of the positioning groove 3-1, the positioning seat 3 returns to its original shape, allowing the positioning pin 4 to engage in the positioning groove 3-1. This process produces a locking sound and tactile feedback, indicating that the drawer has closed completely. Preferably, the positioning seat 3 is injection molded from a polymer material.

[0040] catch Figure 3 and Figure 4 As shown, in this embodiment, a ball bearing assembly 6 is provided between the fixed rail 1 and the movable rail 2. The fixed rail 1 has a first baffle 1-1 at each end, and the movable rail 2 has a second baffle 2-1 at each end. In the sliding projection direction of the slide rail, the first baffle 1-1 and the second baffle 2-1 are staggered and positioned opposite the ball bearing assembly 6. The cooperation between the baffles and the ball bearing assembly 6 prevents the movable rail 2 from disengaging from the fixed rail 1, achieving the maximum bidirectional pull-out position of the slide rail. Specifically, the ball bearing assembly 6 includes a ball bearing bracket and several balls mounted on the bracket, ensuring smooth sliding of the fixed rail 1 and the movable rail 2. When the movable rail 2 is pulled out to one side, the second baffle 2-1 at one end of the movable rail 2 moves the ball bearing assembly 6 together. When the other end of the ball bearing assembly 6 contacts the first baffle 1-1 at the end of the fixed rail 1, the movable rail 2 cannot be pulled out further. The same applies when the movable rail 2 is pulled out to the other side, ensuring the integration of the slide rail.

[0041] This embodiment also relates to a two-way pull-out drawer. For example... Figures 7 to 9As shown, the two-way pull-out drawer includes a drawer body 7 and a cabinet body 8. The drawer body 7 has drawer panels on both sides, and the cabinet body 8 has drawer cavities with openings on both sides. The drawer body 7 is installed in the drawer cavities using the aforementioned two-way pull-out slide rails. During installation, the fixed rail 1 is fixed to the side wall of the cabinet body 8, and a connecting ear plate 5 can be installed on the movable rail 2. The drawer body 7 is fixed to the connecting ear plate 5. Each side of the drawer body 7 can be provided with a set of two-way pull-out slide rails. Figure 7 The diagram shows the drawer in the closed state. At this time, the drawer body 7 is completely within the drawer cavity of the cabinet 8, the sliding rail 2 is closed, and the positioning pin 4 is engaged with the positioning seat 3, thus fixing the drawer body 7 in place. When the drawer needs to be opened, the drawer panel of the drawer body 7 is pulled from one side. The positioning pin 4, under the pulling force, overcomes the engaging force of the positioning seat 3, causing the positioning pin 4 to separate from the positioning seat 3, thereby unlocking and pulling out the drawer. Figure 8 The diagram shows the state where the drawer is pulled out to the right (S1). At this time, the drawer body 7 moves to the right from the drawer cavity, the positioning pin 4 separates from the positioning seat 3, and when the ball assembly 6 is sandwiched between the second baffle 2-1 of the movable rail 2 and the first baffle 1-1 of the fixed rail 1, the drawer is pulled out to the right to the maximum length and cannot be pulled out further, thus preventing the drawer from falling off. Figure 9 The diagram shows the state where the drawer is pulled out to the left (S2). At this time, the drawer body 7 moves to the left from the drawer cavity, and the positioning pin 4 separates from the positioning seat 3. When the ball bearing assembly 6 is sandwiched between the second baffle 2-1 of the movable rail 2 and the first baffle 1-1 of the fixed rail 1, the drawer is pulled out to the left to the maximum length and cannot be pulled out further, thus preventing the drawer from falling off.

[0042] The two-way pull-out drawer in this embodiment enables two-way pulling of the drawer, making it more flexible and convenient to use. Moreover, the drawer is stably positioned after being closed, effectively preventing the drawer from being opened accidentally.

[0043] This utility model discloses a two-way pull-out slide rail and a two-way pull-out drawer using the same. By setting a positioning seat and a positioning pin on the two-way slide rail, when the movable rail moves relative to the fixed rail to the closed position, the positioning seat and the positioning pin engage to maintain the relative position of the movable rail and the fixed rail, thus ensuring the stability of the two-way slide rail in the closed state. Furthermore, the positioning seat and the positioning pin are set on the slide rail, which has a simple structure, is easy to manufacture, reduces the accuracy requirements for the drawer installation position, and makes installation and use convenient.

[0044] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A bidirectional pull-out slide rail, comprising a fixed rail (1) and a movable rail (2) capable of bidirectional sliding relative to the fixed rail (1), characterized in that: It also includes a positioning seat (3) and a positioning pin (4). The positioning seat (3) is installed on one of the fixed rail (1) and the movable rail (2), and the positioning pin (4) is installed on the other of the fixed rail (1) and the movable rail (2). When the movable rail (2) moves to the closed position relative to the fixed rail (1), the positioning seat (3) and the positioning pin (4) engage to maintain the relative position of the movable rail (2) and the fixed rail (1).

2. The bidirectional pull-out slide rail according to claim 1, characterized in that: The positioning seat (3) is fixedly installed on the base plate of the fixed rail (1), and the positioning pin (4) is fixed on the side wall of the movable rail (2).

3. The bidirectional pull-out slide rail according to claim 2, characterized in that: The two ends of the positioning seat (3) are fixedly installed in the middle of the fixed rail (1) by screws, and the positioning pin (4) is fixedly installed in the middle of the movable rail (2).

4. The bidirectional pull-out slide rail according to claim 1, 2, or 3, characterized in that: The positioning seat (3) is provided with a positioning groove (3-1) that is compatible with the positioning pin (4). The positioning seat (3) is also provided with guide slopes (3-2) on both sides of the positioning groove (3-1) along the pulling direction of the slide rail.

5. The bidirectional pull-out slide rail according to claim 4, characterized in that: The positioning seat (3) has raised blocks (3-3) at both ends, forming an elastic deformation space below the positioning groove (3-1) and the guide slope (3-2).

6. The bidirectional pull-out slide rail according to claim 5, characterized in that: The positioning seat (3) is injection molded from polymer material.

7. The bidirectional pull-out slide rail according to claim 4, characterized in that: A ball bearing assembly (6) is provided between the fixed rail (1) and the movable rail (2). The fixed rail (1) has a first baffle (1-1) at both ends and the movable rail (2) has a second baffle (2-1) at both ends. In the sliding projection direction of the slide rail, the first baffle (1-1) and the second baffle (2-1) are staggered and are respectively opposite to the position of the ball bearing assembly (6).

8. A two-way pull-out drawer, comprising a drawer body (7) and a cabinet body (8), wherein the drawer body (7) has drawer panels on both sides, and the cabinet body (8) has drawer cavities with openings on both sides, characterized in that: The drawer body (7) is installed in the drawer cavity using the bidirectional pull-out slide rail as described in any one of claims 1 to 7.

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