An electrically powered drawer drive

Abstract

The utility model provides a kind of electric drawer transmission device, including two groups of slide rail components and transmission power source, slide rail component includes the fixed rail, middle rail, movable rail of sequential sliding connection, transmission power source includes motor, transmission assembly, the motor is installed in fixed rail, transmission assembly includes transmission screw rod, connecting piece, connecting piece is installed on middle rail, the both ends of transmission screw rod are connected with the output end of motor, connecting piece respectively, and motor action simultaneously drives transmission screw rod rotation, makes connecting piece move with transmission screw rod front and back to drive middle rail in fixed rail, movable rail in fixed rail make opening and closing action. Simple structure, expand the use volume of drawer, easy to assemble, electric opening and closing, convenient operation, and synchronous transmission stability is high, ensure the use quality of product.

Description

Technical Field

[0001] This utility model relates to the field of sliding rail technology, specifically an electric drawer drive device. Background Technology

[0002] Drawer slides are used for drawers or similar pull-out sliding mechanisms and are suitable for furniture, filing cabinets, kitchen cabinets, bathroom vanities, electrical cabinets, heavy-duty refrigerators, etc.

[0003] The existing drawer slides include a fixed rail, a middle rail, and a movable rail that are slidably connected in sequence. The fixed rail is installed on the cabinet body, and the movable rail is installed on the drawer assembly.

[0004] When the slide rail is installed in a heavy-duty refrigerator with a large load, the slide rail is equipped with a power mechanism to facilitate the opening and closing of the slide rail. This power mechanism includes a drive motor, a drive shaft that can be driven by the drive motor and thus rotate, a coupling, and a screw that can be driven by the drive shaft via the coupling and thus rotate. The coupling has: a driven element, an actuating element that can be driven by the drive shaft via rotation of the drive shaft and thus rotate about an actuating rotation axis and has at least one first actuating area, and a coupling element that has at least one second actuating area corresponding to the first actuating area and can translate relative to the driven element along the actuating rotation axis between at least one disengaged position and at least one engaged position. In the disengaged position, the coupling element is disengaged from the driven element; in the engaged position, the coupling element is engaged with the driven element.

[0005] However, the above-mentioned electric slide rails have the following shortcomings in practical applications:

[0006] 1) The complex structure reduces the drawer's capacity, requires high precision in assembly, and increases the cost of use.

[0007] 2) Poor synchronous transmission stability can easily cause the drawer slides on both sides to jam, affecting the quality of product use. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electric drawer drive device. It is electrically driven, has a simple structure, is easy to assemble, expands the usable volume of the drawer, and has high synchronous transmission stability, ensuring the quality of product use.

[0009] The purpose of this invention is achieved as follows: an electric drawer transmission device includes two symmetrically distributed sets of slide rail assemblies and a transmission power source for driving the slide rails to operate synchronously. The slide rail assembly includes a fixed rail, a middle rail, and a movable rail that are slidably connected in sequence. The transmission power source includes a motor and a transmission component. The motor is mounted on the fixed rail. The transmission component includes a transmission screw and a connecting member. The connecting member is mounted on the middle rail. The two ends of the transmission screw are respectively connected to the output end of the motor and the connecting member. When the motor is activated, it drives the transmission screw to rotate, causing the connecting member to move back and forth with the transmission screw, thereby driving the middle rail to open and close on the fixed rail and the movable rail on the fixed rail.

[0010] Based on the above optimization, the rear end of the fixed rail is provided with a mounting bracket adapted to be installed in the cabinet. The mounting bracket is adapted to be installed with a motor. The output shaft of the motor is connected to one end of the transmission screw, and the other end of the transmission screw is threadedly connected to a connector.

[0011] Based on the above optimization, at least one connector is installed on the inner side of the middle rail.

[0012] Based on the above optimization, the transmission power source further includes a synchronous transmission component that synchronizes the movement of the middle rail and the movable rail. The synchronous transmission component includes a synchronous rod, a first gear, a second gear, and a transmission belt. The first gear is inserted into both ends of the synchronous rod. The first gear and the second gear are rotatably installed at the front and rear ends of the middle rail of the two sets of slide rail assemblies, respectively. The transmission belt is meshed with the first gear and the second gear, respectively. The synchronous connecting block is installed on the movable rail and the fixed rail and is positioned and connected to the corresponding transmission belt.

[0013] Based on the above optimization, the front and rear parts of the fixed rail and the movable rail are respectively provided with hooks for the synchronous connecting block to be disassembled and assembled, and the synchronous connecting block is provided with a snap-fit ​​position that matches the hook.

[0014] Based on the above optimization, the synchronous connecting block is provided with a toothed portion that meshes with the transmission belt.

[0015] The advantages of this utility model are:

[0016] 1) Through the structural cooperation of the motor, transmission screw, and connecting parts of the transmission power source of this structure, the motor rotates to drive the transmission screw to rotate, so that the connecting parts move back and forth, thereby driving the middle rail to move, realizing the automatic opening and closing of the slide rail. The structure is simple, expands the usable volume of the drawer, is easy to operate, has high transmission stability, and ensures the quality of product use.

[0017] 2) When the power source of this structure is driven by the synchronous transmission component, the transmission component drives the middle rail when the motor is running. Under the structural cooperation of the synchronous belt and the first gear and the second gear of the synchronous transmission component, the middle rail and the movable rail of the slide rail assembly in the same group open and close synchronously. Combined with the linkage structure of the synchronous rod, the two groups of slide rail assemblies move synchronously. The synchronous transmission has high stability and avoids jamming that would affect the quality of product use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of a preferred embodiment of the present invention (with part of the mounting bracket removed).

[0020] Figure 3 This is a structural schematic diagram of a preferred embodiment of the present invention from another angle (with part of the mounting bracket removed).

[0021] Figure 4 This is a partial exploded view of a preferred embodiment of the present invention.

[0022] Figure 5 This is a partial exploded view of another preferred embodiment of the present invention. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings.

[0024] According to the appendix Figures 1 to 5 As shown, the electric drawer transmission device of this utility model includes two symmetrically distributed sets of slide rail assemblies 1 and a transmission power source for driving the slide rails to operate synchronously. Each slide rail assembly 1 includes a fixed rail 11, a middle rail 12, and a movable rail 13 that are slidably connected in sequence. The transmission power source includes a motor 2 and a transmission assembly. The motor 2 is mounted on the fixed rail 11. The transmission assembly includes a transmission screw 3 and a connecting member 4. The connecting member 4 is mounted on the middle rail 12. Both ends of the transmission screw 3 are connected to the output end of the motor 2 and the connecting member 4, respectively. When the motor 2 operates, it drives the transmission screw 3 to rotate, causing the connecting member 4 to move back and forth with the transmission screw 3, thereby driving the middle rail 12 to open and close on the fixed rail 11 and the movable rail 13 to open and close on the fixed rail 11.

[0025] In practical applications, the rear end of the fixed rail 11 is provided with a mounting bracket 5 adapted to be installed in the cabinet, and the mounting bracket 5 is adapted to install the motor 2. The output shaft of the motor 2 is connected to one end of the transmission screw 3, and the other end of the transmission screw 3 is threadedly connected to a connector 4. At least one connector 4 is installed on the inner side of the middle rail 12.

[0026] That is, when motor 2 is running, it drives the transmission screw 3, causing the connecting piece 4 to rotate with the transmission screw 3, thus enabling the connecting piece 4 to move back and forth. This, in turn, links the middle rail 12 to open and close on the fixed rail 11. This achieves automatic opening and closing of the slide rail, has a simple structure, expands the usable capacity of the drawer, is easy to operate, has high transmission stability, and ensures the quality of product use.

[0027] Reference Figures 1 to 5 As shown, the transmission power source also includes a synchronous transmission component that synchronizes the movement of the middle rail 12 and the movable rail 13. The synchronous transmission component includes a synchronous rod 6, a first gear 7, a second gear 8, and a transmission belt 9. The first gear 7 is inserted into both ends of the synchronous rod 6, and the first gear 7 and the second gear 8 are rotatably mounted at the front and rear ends of the middle rail 12 of the two sets of slide rail assemblies 1. The transmission belt 9 is meshed with the first gear 7 and the second gear 8, respectively. The synchronous connecting block 10 is mounted on the movable rail 13 and the fixed rail 11, and is positioned and connected to the corresponding transmission belt 9.

[0028] When motor 2 drives the middle rail 12 through the transmission assembly, the two sets of middle rails 12 move synchronously under the action of the synchronizing rod 6. During this time, the first gear 7 and the second gear 8 rotate to drive the transmission belt 9 to move, so that the movable rails 13 of the two sets of slide rail assemblies 1 move synchronously. In this way, the two sets of slide rail assemblies 1 move synchronously, the synchronous transmission has high stability, and it avoids jamming that would affect the quality of product use.

[0029] In the optimized design, the synchronous connecting block 10 is provided with teeth 102 that engage with the transmission belt 9. This enhances the structural connection stability and ensures synchronous operation.

[0030] In addition, the front and rear parts of the fixed rail 11 and the movable rail 13 are respectively provided with hooks 14 for the synchronous connecting block 10 to be disassembled and assembled, and the synchronous connecting block 10 is provided with a snap-fit ​​position 101 that matches the hook 14.

[0031] The structural cooperation between the hook 14 and the snap-fit ​​position 101 facilitates the assembly of the synchronous connecting block 10, enhances the stability of the structural connection, and makes it easy to maintain and replace, ensuring the quality of product use.

[0032] The above specific embodiments are only specific implementations of the present utility model with better effects. All structures that are the same as or equivalent to the electric drawer drive device of the present utility model are within the protection scope of the present utility model.

Claims

1. An electric drawer drive device, comprising two symmetrically distributed sets of slide rail assemblies (1) and a transmission power source for driving the slide rails to run synchronously, wherein the slide rail assembly (1) comprises a fixed rail (11), a middle rail (12), and a movable rail (13) slidably connected in sequence, characterized in that: The transmission power source includes a motor (2) and a transmission assembly. The motor (2) is mounted on a fixed rail (11). The transmission assembly includes a transmission screw (3) and a connector (4). The connector (4) is mounted on a middle rail (12). The two ends of the transmission screw (3) are connected to the output end of the motor (2) and the connector (4) respectively. When the motor (2) moves, it drives the transmission screw (3) to rotate, causing the connector (4) to move back and forth with the transmission screw (3), thereby driving the middle rail (12) to open and close on the fixed rail (11) and the movable rail (13) to open and close on the fixed rail (11).

2. The electric drawer drive device according to claim 1, characterized in that: The rear end of the fixed rail (11) is provided with a mounting bracket (5) adapted to be installed in the cabinet. The mounting bracket (5) is adapted to be installed with a motor (2). The output shaft of the motor (2) is connected to one end of the transmission screw (3). The other end of the transmission screw (3) is threadedly connected to a connector (4).

3. The electric drawer drive device according to claim 2, characterized in that: At least one connector (4) is installed on the inner side of the middle rail (12).

4. The electric drawer drive device according to claim 1, characterized in that: The transmission power source also includes a synchronous transmission component that enables the middle rail (12) and the movable rail (13) to move synchronously. The synchronous transmission component includes a synchronous rod (6), a first gear (7), a second gear (8), and a transmission belt (9). The first gear (7) is inserted into both ends of the synchronous rod (6). The first gear (7) and the second gear (8) are rotatably installed at the front and rear ends of the middle rail (12) of the two sets of slide rail assemblies (1). The transmission belt (9) is meshed with the first gear (7) and the second gear (8) respectively. The synchronous connecting block (10) is installed on the movable rail (13) and the fixed rail (11) respectively and is positioned and connected to the corresponding transmission belt (9).

5. The electric drawer drive device according to claim 4, characterized in that: The fixed rail (11) and the movable rail (13) are respectively provided with hooks (14) for the synchronous connecting block (10) to be disassembled and assembled. The synchronous connecting block (10) is provided with a snap-fit ​​position (101) that matches and engages with the hooks (14).

6. The electric drawer drive device according to claim 4, characterized in that: The synchronous connecting block (10) is provided with a toothed part (102) that meshes with the transmission belt (9).

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