A power mechanism for a sliding rail

Abstract

This utility model provides a power mechanism for a sliding rail, including a motor and a clutch. The clutch includes a housing and an input shaft and an output shaft mounted on the housing. The motor's main shaft is adapted to connect with the input shaft. A linkage retaining member is provided between the input shaft and the output shaft to engage the output shaft with the input shaft when the motor rotates, or to separate the output shaft from the input shaft when the motor rotates in the opposite direction. The housing is provided with a positioning connector to keep the linkage retaining member stationary when separated. The positioning connector includes a friction block and a compression spring. The friction block is fitted onto the input shaft. One elastic end of the compression spring is connected to the housing, and the other elastic end of the compression spring is connected to the friction block. The friction block abuts against the linkage retaining member under the action of the compression spring, so that the linkage retaining member is frictionally connected to the housing. The structure is simple, easy to assemble, and improves the transmission stability of the guide sliding rail during opening and closing, while reducing the space occupied during operation. It has strong applicability and ensures the quality of product use.

Description

Technical Field

[0001] This utility model relates to the field of sliding rail technology, specifically a power mechanism for sliding rails. Background Technology

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

[0003] The existing sliding rail includes an upper rail, a lower rail, and a middle rail. The lower rail is fitted onto the lower part of the middle rail and a support plane is installed thereon. The upper rail is fitted onto the upper part of the middle rail and a support plane is installed thereon.

[0004] The sliding rail is opened and closed by a power mechanism for ease of use. 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 having at least one second actuating area corresponding to the first actuating area and capable of translating 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 power mechanism described above has the following shortcomings in practical applications:

[0006] 1) The structure is complex and requires high precision in assembly; otherwise, the product's performance will be affected.

[0007] 2) Because the relative rotation between the operating element and the coupling element caused by the rotation of the drive shaft can be converted into a translational movement of the coupling element along the operating rotation axis, relative to the driven element, relative to the operating element and towards the driven element, from the disengaged position to the engaged position; the operation is complicated, the transmission stability is low, and it occupies a large amount of limited space, resulting in a large product size, which cannot be used in other smaller furniture and appliances, and its use is very limited. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a power mechanism for sliding rails. It has a simple structure, is easy to assemble, and improves the transmission stability of the guide sliding rail during opening and closing, while reducing the space occupied during operation. It is highly applicable and ensures the quality of product use.

[0009] The objective of this invention is achieved as follows: A power mechanism for a sliding rail includes a motor and a clutch. The clutch includes a housing and an input shaft and an output shaft mounted on the housing. The main shaft of the motor is adapted to be connected to the input shaft. A linkage retaining member is provided between the input shaft and the output shaft to compress the output shaft to connect it to the input shaft when the motor rotates, or to separate the output shaft from the input shaft when the motor rotates in the opposite direction. A positioning connector is provided inside the housing to keep the linkage retaining member stationary when separated. The positioning connector includes a friction block and a compression spring. The friction block is fitted onto the input shaft. One elastic end of the compression spring is connected to the housing, and the other elastic end of the compression spring is connected to the friction block. The friction block abuts against the linkage retaining member under the action of the compression spring, so that the linkage retaining member is frictionally connected to the housing.

[0010] Based on the above optimization, the linkage retaining component includes a linkage component and a retainer. The retainer is frictionally connected to the inner cavity of the outer shell through a friction block, and the retainer has at least two locking positions. When the input shaft is driven by the motor, it presses the linkage component to move, so that the linkage component is locked in the locking position and tightly connected to the input shaft and the output shaft, or the linkage component rotates and disengages from the locking position, so that the output shaft and the input shaft separate to enter a free rotation state.

[0011] Based on the above optimization, the input shaft includes a shaft base and a shaped protruding edge. The shaft base is fastened to the main shaft of the motor, and a main bearing for rotating relative to the outer shell is installed on the shaft base. The compression spring is fitted on the shaft base, and one elastic end of the compression spring abuts against the main bearing, while the other elastic end of the compression spring abuts against a retainer. The shaped protruding edge is integrally formed on one end of the shaft base, and the shaped protruding edge moves as the shaft base rotates, pressing against the linkage component.

[0012] Based on the above optimization, the housing is provided with a limiting flange to prevent the cage from detaching.

[0013] Based on the above optimization, the irregular convex edge portion includes a high region for pressing the linkage member to fix the linkage member to the input shaft and the output shaft respectively, and a low region for driving the linkage member to move to separate the shaft from the input shaft and the output shaft. The high region and the low region are sequentially and cyclically connected to one end of the shaft base. The linkage member can be rolled and connected to the high region and the low region as the input shaft rotates.

[0014] Based on the above optimization, the output shaft is connected to the other end of the input shaft via a bearing adapter.

[0015] Based on the above optimization, the output shaft is equipped with a guide wheel, the guide wheel is connected to a traction line, and the traction line is driven by a guide slide rail.

[0016] Based on the above optimization, the housing is provided with a mounting bracket for positioning and installing the motor, and the mounting bracket has a connecting hole for relative rotation of the output shaft.

[0017] Based on the above optimization, the outer edge of the cage is provided with a mounting groove for limiting the displacement of the friction block.

[0018] The advantages of this utility model are:

[0019] 1) Through the structural cooperation of the friction block and compression spring of the positioning connector with the motor, input shaft, and output shaft, during operation, the motor starts, driving the input shaft. The input shaft presses against the linkage retainer, fixing the linkage retainer between the input shaft and the output shaft. This allows the input shaft to drive the output shaft to rotate, realizing the electric opening and closing of the sliding rail. When the motor rotates in the opposite direction at a certain angle, the linkage retainer rotates accordingly, separating from the output shaft, and the sliding rail resets, separating the output shaft from the motor. During this process, the sliding rail can be manually opened and closed. This design is highly practical, easy to operate, and effectively improves transmission stability.

[0020] 2) Under the action of the power mechanism of this structure, the motor drives the linkage and separation in a radial snap-fit ​​manner, which causes the output shaft to link the guide wheel, thereby opening and closing the traction wire transmission guide slide rail. The structure is simple, reduces the use of parts, is easy to operate, reduces the space occupied in operation, and is suitable for use in different products, with strong applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the preferred embodiment of the present invention during the snap-fit ​​process.

[0024] Figure 4 This is a schematic diagram of the separation process in a preferred embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] According to the appendix Figures 1 to 4As shown, the power mechanism for the sliding rail of this utility model includes a motor 1 and a clutch. The clutch includes a housing 2 and an input shaft 3 and an output shaft 4 mounted on the housing 2. The main shaft of the motor 1 is adapted to connect with the input shaft 3. A linkage retaining member is provided between the input shaft 3 and the output shaft 4 to engage the output shaft 4 with the input shaft 3 when the motor 1 rotates, or to separate the output shaft 4 from the input shaft 3 when the motor 1 rotates in the opposite direction. The housing 2 is provided with a positioning connector for keeping the linkage retaining member stationary when separated. The positioning connector includes a friction block 5 and a compression spring 6. The friction block 5 is fitted onto the input shaft 3. One elastic end of the compression spring 6 is connected to the housing 2, and the other elastic end of the compression spring 6 is connected to the friction block 5. The friction block 5 abuts against the linkage retaining member under the action of the compression spring 6, so that the linkage retaining member is frictionally connected to the housing 2.

[0027] That is, when motor 1 rotates, input shaft 3 rotates accordingly, and the linkage retainer remains stationary under the action of friction block 5. When input shaft 3 rotates to a certain angle, the linkage retainer is compressed and fixedly connected to input shaft 3 and output shaft 4 respectively, so that output shaft 4 rotates with input shaft 3. When motor 1 rotates in the opposite direction to a certain angle, due to the elasticity of compression spring 6 acting on friction block 5, the linkage retainer does not rotate with input shaft 3, and the linkage retainer separates from output shaft 4, so that output shaft 4 is in a separated state from input shaft 3.

[0028] Reference Figures 1 to 4 As shown in the diagram, further detailed, the linkage retaining component includes a linkage component 7 and a retainer 8. The retainer 8 is frictionally connected to the inner cavity of the outer casing 2 via a friction block 5, and the retainer 8 is provided with at least two locking positions 81. When the input shaft 3 is driven by the motor 1, it presses the linkage component 7 to move, causing the linkage component 7 to be locked into the locking position 81 and tightly connected to the input shaft 3 and the output shaft 4, or causing the linkage component 7 to rotate and disengage from the locking position 81, so that the output shaft 4 separates from the input shaft 3 and enters a free rotation state.

[0029] The input shaft 3 includes a shaft base 31 and a shaped protrusion 32. The shaft base 31 is fastened to the main shaft of the motor 1, and a main bearing 9 for rotating relative to the outer casing 2 is installed on the shaft base 31. The compression spring 6 is fitted onto the shaft base 31, with one elastic end of the compression spring 6 abutting against the main bearing 9 and the other elastic end of the compression spring 6 abutting against the retainer 8. The shaped protrusion 32 is integrally formed at one end of the shaft base 31, and the shaped protrusion 32 moves by pressing the linkage 7 as the shaft base 31 rotates.

[0030] In the optimized scheme, the irregular convex edge 32 includes a high region 321 for pressing the linkage 7 to fix the linkage 7 to the input shaft 3 and the output shaft 4 respectively, and a low region 322 for moving the linkage 7 to separate the shaft into the shaft and the output shaft 4. The high region 321 and the low region 322 are sequentially and cyclically connected to one end of the shaft base 31. The linkage 7 can be rolled and connected to the high region 321 and the low region 322 as the input shaft 3 rotates.

[0031] Furthermore, the housing 2 is provided with a limiting flange 21 to prevent the retainer 8 from disengaging. The output shaft 4 is rotatably connected to the other end of the input shaft 3 via the bearing 12.

[0032] Furthermore, the output shaft 4 is equipped with a guide wheel 10, the guide wheel 10 is connected to a traction line, and the traction line is driven by a guide slide rail.

[0033] That is, when motor 1 is running, input shaft 3 rotates counterclockwise, and cage 8 remains stationary under the frictional force of friction block 5. When input shaft 3 rotates to a designated position, linkage 7 rolls along input shaft 3 and relative to it. When it rolls to the high position region 321 of the irregular convex edge 32, linkage 7 is squeezed out by the high position region 321 of input shaft 3, causing linkage 7 to engage with engagement position 81 and between input shaft 3 and output shaft 4. At this time, input shaft 3 can drive output shaft 4 to rotate counterclockwise. Also, the input force of input shaft 3 is greater than the frictional force, which can cause cage 8 to rotate together. High transmission stability is achieved, realizing electric opening and closing of guide slide rail.

[0034] During this process, when the output shaft 4 rotates faster than the input shaft 3 due to the action of the retainer 8 and the friction block 5, the linkage 7 disengages from the locking position 81, allowing the output shaft 4 to overtake the input shaft 3. This reduces the kinetic energy input of the motor 1, lowers energy consumption, and ensures product quality.

[0035] After the work is completed, motor 1 rotates in the opposite direction by a certain angle, causing the linkage 7 to roll to the flat contact area of ​​the irregular convex edge 32, thus disengaging the linkage 7 from the locking position 81 and separating the input shaft 3 from the output shaft 4. During separation, the linkage 7 is in a free state, the input shaft 3 remains stationary under the friction of the retainer 8, and the output shaft 4 is in a free-rotating state. At this time, manual operation of the door opening and closing can be achieved. This design is highly practical, easy to operate, and effectively improves transmission stability.

[0036] Additionally, the outer casing 2 is provided with a mounting bracket 11 for positioning and installing the motor 1, and the mounting bracket 11 has a connecting hole for relative rotation of the output shaft 4. The outer edge of the retainer 8 is provided with a mounting groove for limiting the displacement of the friction block 5.

[0037] The power mechanism with this structure is simple, reduces the number of parts, is easy to disassemble and assemble, and is convenient for maintenance and replacement. It adopts a radial snap-fit ​​linkage connection and separation, which causes the output shaft 4 to link with the guide wheel 10, thereby opening and closing the traction line drive guide slide rail. The structure is simple, reduces the number of parts, is easy to operate, reduces the space occupied in operation, and is suitable for use in different products, with strong applicability.

[0038] The above specific embodiments are only specific implementations of the present utility model with better effects. Any structure that is the same as or equivalent to the power mechanism for the sliding rail of the present utility model is within the protection scope of the present utility model.

Claims

1. A power mechanism for a sliding rail, comprising a motor (1) and a clutch, characterized in that: The clutch includes a housing (2) and an input shaft (3) and an output shaft (4) mounted on the housing (2). The main shaft of the motor (1) is adapted to the input shaft (3). A linkage retaining member is provided between the input shaft (3) and the output shaft (4) for pressing the output shaft (4) when the motor (1) rotates to connect it to the input shaft (3), or for separating the output shaft (4) from the input shaft (3) when the motor (1) rotates in the opposite direction. A positioning connector is provided inside the housing (2) for keeping the linkage retaining member stationary when separated. The positioning connector includes a friction block (5) and a compression spring (6). The friction block (5) is fitted onto the input shaft (3). One elastic end of the compression spring (6) is connected to the housing (2), and the other elastic end of the compression spring (6) is connected to the friction block (5). The friction block (5) abuts against the linkage retaining member under the action of the compression spring (6) so that the linkage retaining member is frictionally connected to the housing (2).

2. The power mechanism for a slide rail according to claim 1, wherein: The linkage retaining component includes a linkage component (7) and a retainer (8). The retainer (8) is frictionally connected to the inner cavity of the outer shell (2) through a friction block (5), and the retainer (8) is provided with at least two snap-fit ​​positions (81). The input shaft (3) is driven by the motor (1) to press the linkage component (7) to move, so that the linkage component (7) is snapped into the snap-fit ​​position (81) and tightly connected to the input shaft (3) and the output shaft (4), or the linkage component (7) is rotated and disengaged from the snap-fit ​​position (81), so that the output shaft (4) is separated from the input shaft (3) and enters a free rotation state.

3. The power mechanism for a slide rail according to claim 2, wherein: The input shaft (3) includes a shaft base (31) and a shaped protrusion (32). The shaft base (31) is fastened to the main shaft of the motor (1), and the shaft base (31) is equipped with a main bearing (9) for rotating relative to the outer shell (2). The compression spring (6) is fitted on the shaft base (31), and one elastic end of the compression spring (6) abuts against the main bearing (9), while the other elastic end of the compression spring (6) abuts against the retainer (8). The shaped protrusion (32) is integrally formed on one end of the shaft base (31), and the shaped protrusion (32) moves as the shaft base (31) rotates, pressing the linkage (7) to move.

4. The power mechanism for slide rails according to claim 3, wherein: The outer casing (2) is provided with a limiting flange (21) to prevent the retainer (8) from disengaging.

5. The power mechanism for slide rails according to claim 3, wherein: The irregularly shaped protruding edge (32) includes a high region (321) for pressing the linkage (7) to fix the linkage (7) to the input shaft (3) and the output shaft (4) respectively, and a low region (322) for driving the linkage (7) to move and separating the shaft input and the output shaft (4). The high region (321) and the low region (322) are sequentially and cyclically connected to one end of the shaft base (31). The linkage (7) can be rolled and connected to the high region (321) and the low region (322) as the input shaft (3) rotates.

6. The power mechanism for slide rails according to claim 1, wherein: The output shaft (4) is connected to the other end of the input shaft (3) via a bearing (12).

7. The power mechanism for slide rails according to claim 1, wherein: The output shaft (4) is equipped with a guide wheel (10), the guide wheel (10) is connected to a traction line, and the traction line is connected to a guide slide rail.

8. The power mechanism for slide rails according to claim 1, wherein: The shell (2) is provided with a mounting support (11) for positioning and mounting the motor (1), and the mounting support (11) is provided with a connecting hole for relative rotation of the output shaft (4).

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