Over-travel full-electric sliding rail

Abstract

The utility model discloses an over-travel full-electric sliding rail. Comprising an outer rail, a middle rail and an inner rail, the outer rail is slidably connected with the middle rail, the inner rail is slidably connected with the middle rail, a motor is installed at the rear end of the outer rail, the output end of the motor is connected with a coupler and connected with a threaded lead screw through the coupler, limiting blocks are arranged at the two ends of the middle rail, and a synchronous belt is annularly arranged between the two limiting blocks in a sleeving mode; the top of the synchronous belt is fixedly connected with the middle of the lower surface of the inner rail, and the bottom of the synchronous belt is fixedly connected with the middle of the upper surface of the outer rail. According to the overtravel full-electric sliding rail, when the overtravel full-electric sliding rail is started, the threaded lead screw is matched with the threaded sliding block to drive the middle rail to unfold or retract, the middle rail pulls the inner rail to unfold through the synchronous belt during unfolding, and therefore synchronous unfolding is conducted, and the middle rail pulls the inner rail to return through the synchronous belt during retracting, so that the sliding rail has the synchronous unfolding or returning function; and under the condition that the section number of the sliding rail is not increased, the sliding rail also has the effect of driving the workpiece to move for a long distance.

Description

Technical Field

[0001] This utility model relates to the field of electric slide rail technology, and in particular to an overtravel fully electric slide rail. Background Technology

[0002] An electric slide rail is a device that enables linear movement of an object through an electrically driven slide rail, and it has wide applications in many fields. It typically consists of a track, a slider, and a drive system. When the motor in the drive system is powered on, its output shaft drives the input shaft of the reducer to rotate. The reducer reduces the rotational speed and amplifies the torque before transmitting the power to the transmission device. Depending on its type, the transmission device converts the rotational motion into linear motion in different ways. For example, a lead screw drive uses the rotation of the lead screw to drive a nut to move linearly; the nut is connected to the slider, thus allowing the slider to move linearly along the track.

[0003] Currently, the travel of electric slide rails is usually fixed and relatively limited during use, depending on their design specifications and application scenarios. This makes it difficult to meet some special needs that require ultra-long travel. In some scenarios where space is limited but a large range of movement is required, it may be necessary to increase the number of slide rail sections or adopt more complex mechanical structures. However, this approach increases the complexity and cost of the equipment and may not be able to achieve long-distance movement within a limited space. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an overtravel fully electric slide rail with the function of simultaneously unfolding the middle rail driven by the motor, thereby achieving the technical effect of completing overtravel movement within a limited space.

[0005] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution:

[0006] The technical solution of this utility model is: an overtravel fully electric slide rail, including an outer rail, a middle rail slidably connected to the front of the outer rail, an inner rail slidably connected to the front of the middle rail, a motor fixedly installed at the rear end of the outer rail, a coupling provided at the output end of the motor, and a threaded screw fixedly connected to the front end of the coupling, which can drive the middle rail to move horizontally.

[0007] A synchronization mechanism is provided on the middle rail. The synchronization mechanism includes limiting blocks at both ends of the middle rail. A synchronization belt is annularly sleeved between the two limiting blocks. The top of the synchronization belt is fixedly connected to the middle of the lower surface of the inner rail, and the bottom of the synchronization belt is fixedly connected to the middle of the upper surface of the outer rail. The synchronization belt is slidably connected to the limiting blocks.

[0008] When the middle rail extends forward, the front limiting block moves forward and pulls the inner rail forward to extend via the synchronous belt. When the middle rail retracts backward, the rear limiting block moves backward and pulls the inner rail backward to retract via the synchronous belt.

[0009] Furthermore, a screw support seat connected to the screw is fixedly installed on one side of the front of the outer rail, a screw slider adapted to the screw is fixedly installed on the back of the middle rail, and the inner rail is slidably disposed on the front of the middle rail.

[0010] Furthermore, the limiting block has a guide groove inside that allows the timing belt to move.

[0011] Furthermore, the inner end of the limiting block is provided with a slot that matches the middle rail, and both limiting blocks are fixedly installed at both ends of the middle rail through the slot.

[0012] Furthermore, the lead screw support is fixedly connected to the front of the outer rail by rivets.

[0013] Furthermore, an inner ball retainer is fixedly installed on one side of the inner wall of the inner rail, and stops that can limit the movement of the inner ball retainer are provided on both sides of the rear end of the inner rail. A baffle is fixedly installed on the front end of the inner rail.

[0014] Furthermore, an outer ball retainer is fixedly installed on one side of the middle rail, and a limiting block that can limit the movement of the outer ball retainer is fixedly installed at the end of the outer ball retainer away from the coupling.

[0015] Furthermore, the motor is fixedly connected to the threaded screw via the coupling, and mounting seats are provided at both the front and rear ends of the inner rail.

[0016] Furthermore, the inner rail and the outer rail are of the same length, and the middle rail is shorter than the inner rail.

[0017] Furthermore, the length of the threaded screw is less than the length of the outer rail, and the length of the threaded screw is greater than the length of the middle rail.

[0018] The beneficial technical effects of this utility model are as follows: By using a motor to drive the threaded screw, the motor drives the threaded screw to rotate forward through a coupling. The threaded screw, through the cooperation of the thread and the threaded slider, causes the threaded slider to move while simultaneously unfolding the middle rail. Subsequently, the middle rail drives the front limiting block to move, and the front limiting block pulls the inner rail to unfold through the top of the synchronous belt, so that the middle rail and the inner rail unfold synchronously. This enables the workpiece to move a long distance within a limited space, avoiding the problem of having to increase the number of slide rails or adopt more complex mechanical structures in certain scenarios where space is limited but a large range of movement is required (such as in small precision mold processing machine tools and small automated warehouses). Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a front view schematic diagram of the structure of the middle rail and coupling of this utility model;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 4 This is a rear view schematic diagram of the structure of the threaded screw and screw support of this utility model;

[0023] Figure 5 This is a rear view schematic diagram of the structure of the middle rail and the threaded slider of this utility model;

[0024] Figure 6 This is a three-dimensional structural schematic diagram of the limiting block of this utility model;

[0025] Figure 7 This is a side view schematic diagram of the structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the synchronous belt structure of this utility model.

[0027] The numbers and letters in the diagram represent the names of the corresponding components:

[0028] 1. Outer rail; 11. Screw support seat; 12. Outer ball retainer; 2. Coupling; 3. Motor; 4. Threaded screw; 5. Synchronous belt; 6. Inner rail; 61. Inner ball retainer; 62. Stop; 7. Middle rail; 71. Threaded slider; 8. Limit block; 81. Guide groove; 82. Slot. Detailed Implementation

[0029] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0030] See appendix Figures 1-7 As shown, an overtravel fully electric slide rail includes an outer rail 1, a middle rail 7 slidably connected to the front of the outer rail 1, an inner rail 6 slidably connected to the front of the middle rail 7, a motor 3 fixedly installed at the rear end of the outer rail 1, a coupling 2 provided at the output end of the motor 3, a threaded screw 4 capable of driving the middle rail 7 to move horizontally fixedly connected to the front end of the coupling 2, the motor 3 being fixedly connected to the threaded screw 4 via the coupling 2, a screw support seat 11 connected to the threaded screw 4 being fixedly installed on one side of the front of the outer rail 1, a threaded slider 71 adapted to the threaded screw 4 being fixedly installed on the back of the middle rail 7, and the inner rail 6 being slidably disposed on the front of the middle rail 7.

[0031] The outer rail 1 is installed in a designated position, such as an automated robotic arm, processing equipment, or the inner wall of a cabinet. Then, the workpiece to be transported is installed with the inner rail 6. The motor 3 is started, and the motor 3 drives the threaded screw 4 to rotate forward through the coupling 2. Subsequently, the threaded screw 4 can push the middle rail 7 to unfold outward through the cooperation of the thread and the threaded slider 71.

[0032] A synchronization mechanism is provided on the middle rail 7. The synchronization mechanism includes limiting blocks 8 at both ends of the middle rail 7. A synchronization belt 5 is annularly sleeved between the two limiting blocks 8. The top of the synchronization belt 5 is fixedly connected to the middle of the lower surface of the inner rail 6, and the bottom of the synchronization belt 5 is fixedly connected to the middle of the upper surface of the outer rail 1. The synchronization belt 5 is slidably connected to the limiting blocks 8. When the middle rail 7 unfolds forward, the front limiting block 8 moves forward and pulls the inner rail 6 forward to unfold via the synchronization belt 5. When the middle rail 7 moves backward to retract, the rear limiting block 8 moves backward and pulls the inner rail 6 backward to retract via the synchronization belt 5.

[0033] Its working principle is as follows: when the top and bottom ends of the synchronous belt 5 are fixedly connected to the inner rail 6 and the outer rail 1 respectively, the middle rail 7 moves forward or backward, and the corresponding limiting block 8 will squeeze the synchronous belt 5 at the corresponding position, so that when the bottom end of the synchronous belt 5 is fixed, the top end of the synchronous belt 5 will pull the inner rail 6 to move in the corresponding direction.

[0034] Through the synchronization mechanism, when the threaded slider 71 pushes the middle rail 7 outward, the limiting block 8 at the front end of the middle rail 7 will, along with being pushed by the middle rail 7, press against the front end of the timing belt 5. As it moves forward continuously, the top of the timing belt 5 will pull the inner rail 6 forward, thus achieving synchronous unfolding. When the threaded slider 71 pushes the middle rail 7 inward to reset, the limiting block 8 at the rear end of the middle rail 7 will, along with being pushed by the middle rail 7, press against the rear end of the inner wall of the timing belt 5. As it moves backward continuously, the top of the timing belt 5 will pull the inner rail 6 backward, thus achieving synchronous retraction. In scenarios where space is limited but a large range of motion is required, this slide rail device can perform overtravel movements. It has a simple structure and is relatively easy to maintain. In automation applications in industrial manufacturing, logistics warehousing, medical, or automotive manufacturing, it can achieve a large range of adjustments in limited spaces (such as small automated production lines, precision machining equipment, small automated warehouses, or automotive parts assembly lines) without increasing the number of slide rails or using more complex mechanical structures. This makes the device simple in structure and can effectively reduce costs.

[0035] Furthermore, the lead screw support 11 is provided with a bearing connected to the threaded lead screw 4. The threaded lead screw 4 is rotatably connected to the lead screw support 11 through the bearing. The lead screw support 11 is fixedly connected to the front of the outer rail 1 by rivets. The back of the middle rail 7 is provided with a clearance groove for avoiding the lead screw support 11.

[0036] By setting the clearance groove, the middle rail 7 will not be affected by the lead screw support seat 11 when sliding.

[0037] Furthermore, the limiting block 8 has a guide groove 81 inside which the synchronous belt 5 can move.

[0038] The guide groove 81 can limit the timing belt 5. When the limiting block 8 moves forward or backward, the timing belt 5 can move within the limiting block 8 through the guide groove 81, causing the timing belt 5 to be squeezed. When the bottom of the timing belt 5 is fixed to the outer rail 1, when the limiting block 8 moves forward or backward, it will pull the inner rail 6 forward or backward through the top of the timing belt 5.

[0039] Furthermore, the inner end of the limiting block 8 is provided with a slot 82 that is compatible with the middle rail 7. Both limiting blocks 8 are fixedly installed at both ends of the middle rail 7 through the slot 82. Both limiting blocks 8 are fixed to both ends of the middle rail 7 through the slot 82.

[0040] Furthermore, stop points 62 are fixedly installed on both sides of the inner wall at the rear end of the inner rail 6, an inner ball retainer 61 is fixedly installed on the inner wall of the inner rail 6 at the front end of the stop points 62, and a baffle is fixedly installed at the front end of the inner rail 6.

[0041] By setting the stop point 62 and the inner ball retainer 61, the stop point 62 and the inner ball retainer 61 can limit the inner rail 6 when it is unfolded, preventing the inner rail 6 from moving excessively and falling off. The baffle can prevent the inner rail 6 from moving excessively and falling off when it is retracted.

[0042] Furthermore, an outer ball retainer 12 is fixedly installed on one side of the middle rail 7. A limiting block that can limit the movement of the outer ball retainer 12 is fixedly installed at the end of the outer ball retainer 12 away from the coupling 2. The limiting block can limit the unfolded length of the middle rail 7.

[0043] See appendix Figure 8 As shown, a synchronous belt 5 is annularly sleeved between the two end limiting blocks 8. The top of the synchronous belt 5 is fixedly connected to the middle of the lower surface of the inner rail 6, and the bottom of the synchronous belt 5 is fixedly connected to the middle of the upper surface of the outer rail 1. The synchronous belt 5 needs to pass through the guide groove 81 inside the corresponding limiting block 8, so that the synchronous belt 5 and the limiting block 8 can slide together. At the same time, the guide groove 81 also has the function of limiting the synchronous belt 5 to prevent the synchronous belt 5 from falling off or deviating. This setting allows the middle rail 7 to control the expansion and contraction of the inner rail 6 by using the pushing action of the limiting block 8 when it expands or retracts, thus achieving a synchronous linkage effect.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fully electric slide rail with extended travel, characterized in that, include: The outer rail (1) is slidably connected to the front of the outer rail (1) and the middle rail (7) is slidably connected to the front of the middle rail (7) and the inner rail (6) is slidably connected to the front of the middle rail (7). The rear end of the outer rail (1) is fixedly installed with a motor (3) and the output end of the motor (3) is provided with a coupling (2). The front end of the coupling (2) is fixedly connected with a threaded screw (4) that can drive the middle rail (7) to move horizontally. A synchronization mechanism is provided on the middle rail (7). The synchronization mechanism includes limiting blocks (8) at both ends of the middle rail (7). A synchronization belt (5) is annularly sleeved between the limiting blocks (8) at both ends. The top of the synchronization belt (5) is fixedly connected to the middle of the lower surface of the inner rail (6). The bottom of the synchronization belt (5) is fixedly connected to the middle of the upper surface of the outer rail (1). The synchronization belt (5) is slidably connected to the limiting blocks (8). When the middle rail (7) extends forward, the front limiting block (8) moves forward and pulls the inner rail (6) forward through the synchronous belt (5). When the middle rail (7) moves backward and retracts, the rear limiting block (8) moves backward and pulls the inner rail (6) backward through the synchronous belt (5).

2. The overtravel fully electric slide rail according to claim 1, characterized in that, The outer rail (1) has a screw support seat (11) fixedly installed on one side of the front side, which is connected to the screw rod (4). The middle rail (7) has a screw slider (71) that is adapted to the screw rod (4) fixedly installed on the back side. The inner rail (6) is slidably disposed on the front side of the middle rail (7).

3. The overtravel fully electric slide rail according to claim 1, characterized in that, The limiting block (8) has a guide groove (81) inside which the synchronous belt (5) can move.

4. The overtravel fully electric slide rail according to claim 2, characterized in that, The inner end of the limiting block (8) is provided with a slot (82) that is compatible with the middle rail (7), and the two limiting blocks (8) are respectively fixedly installed at both ends of the middle rail (7) through the slot (82).

5. The overtravel fully electric slide rail according to claim 4, characterized in that, The lead screw support (11) is fixedly connected to the front of the outer rail (1) by rivets.

6. The overtravel fully electric slide rail according to claim 1, characterized in that, An inner ball retainer (61) is fixedly installed on one side of the inner wall of the inner rail (6). The two sides of the rear end of the inner rail (6) are provided with stop points (62) that can limit the movement of the inner ball retainer (61). A baffle is fixedly installed at the front end of the inner rail (6).

7. The overtravel fully electric slide rail according to claim 1, characterized in that, An outer ball retainer (12) is fixedly installed on one side of the middle rail (7), and a limiting block that can limit the movement of the outer ball retainer (12) is fixedly installed at the end of the outer ball retainer (12) away from the coupling (2).

8. The overtravel fully electric slide rail according to claim 1, characterized in that, The motor (3) is fixedly connected to the threaded screw (4) via the coupling (2), and mounting seats are provided at both the front end and the rear end of the inner rail (6).

9. The overtravel fully electric slide rail according to claim 1, characterized in that, The inner rail (6) and the outer rail (1) have the same length, and the middle rail (7) has a shorter length than the inner rail (6).

10. The overtravel fully electric slide rail according to claim 1, characterized in that, The length of the threaded screw (4) is less than the length of the outer rail (1), and the length of the threaded screw (4) is greater than the length of the middle rail (7).

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