Gear type range extending linear slide rail pair
Patent Information
- Application Number
- CN202522754343.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-12-25
AI Technical Summary
[0004]然而，这种增程方式由于悬臂的伸出，会随着行程的增加而降低负载能力，同时还会降低增程滑轨整体的刚性
[0016]有益效果：与现有技术相比，本申请提供的齿轮式增程直线滑轨副通过传动板两侧滑块、齿轮和第一挡块与两侧滑轨上滑动槽、齿条和第二挡块的配合使得两侧滑轨能够反向凸出传动板而实现增程，同时在复位后能够相对靠近传动板，使得整体结构紧凑，缩小占用空间，此外，由于两侧滑轨均是与传动板直接连接，而非通过中间轨间接连接，使得在增程后还能够减轻对负载能力和刚性的负面影响。
Smart Images
Figure CN224786302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slide rail pair technology, and in particular to gear-type extended range linear slide rail pair. Background Technology
[0002] Extender travel rails are linear guides that can extend their travel length, enabling them to achieve a longer travel distance than the physical length of the rail itself within a limited space.
[0003] Generally, a range extender slide consists of a fixed rail, an intermediate rail, and a sliding block. Its operation is similar to the extension of a telescope. Specifically, the sliding block moves on the intermediate rail. When it slides to the end of the intermediate rail, it will cause the intermediate rail to extend from the fixed rail. In this way, the total stroke is approximately equal to the length of the intermediate rail plus the effective length of the fixed rail, thus far exceeding the closed length of the slide itself and achieving range extension.
[0004] However, this range extension method reduces the load capacity as the stroke increases due to the extension of the cantilever, and also reduces the overall rigidity of the range extension slide rail. Utility Model Content
[0005] This application provides a gear-type extended-stroke linear guide pair, which can not only increase the stroke of the linear guide, but also reduce the negative impact on load capacity and rigidity after the stroke is extended.
[0006] This application provides a gear-type extended range linear slide rail assembly, including a transmission plate and slide rails symmetrically arranged on both sides of the transmission plate. The length direction of the transmission plate is the moving direction of the slide rails. A slider, a gear, and a first stop are installed on both sides of the transmission plate. The slide rails on both sides are respectively provided with sliding grooves that slide with the sliders, racks that mesh with the gears, and second stops that mesh with the first stops. This allows the slide rails on both sides to oriented protrude from the transmission plate in opposite directions along the transmission plate based on the sliding engagement relationship between the sliding grooves and the sliders, the meshing relationship between the racks and the gears, and the blocking effect of the first and second stops, thereby achieving range extension or oriented reset and remaining at the transmission plate.
[0007] In one possible implementation, the length of the transmission plate is equal to that of the slide rail.
[0008] In one possible implementation, the slider, the gear, and the first stop block located on both sides of the transmission plate are symmetrically distributed relative to the length direction of the transmission plate and the central plane of the transmission plate, wherein the central plane is the central plane of the transmission plate in the width direction.
[0009] In one possible implementation, one side of the transmission plate is defined as a first side, the slide rail located on the first side is defined as a first slide rail, and the first slide rail is defined as being able to move in a first direction and protrude from the transmission plate. The first stop block located on the first side includes an end stop block, wherein the end stop block is close to one downstream end of the transmission plate in the first direction, and the second stop block on the first slide rail includes a directional stop block that cooperates with the end stop block, and after the first slide rail is reset in place on the transmission plate, the directional stop block abuts against the downstream end of the end stop block.
[0010] In one possible implementation, the first stop block located on the first side further includes a center stop block, wherein the center stop block is located near the center of the transmission plate in the length direction, and the second stop block on the first slide rail further includes a travel stop block that cooperates with the center stop block, wherein the travel stop block is located at one end away from the direction stop block.
[0011] In one possible implementation, the sliders on the first side are spaced apart along the length of the transmission plate and are located downstream of the first direction.
[0012] In one possible implementation, the first side has a guide block at the end away from the end stop, and the guide block is slidably engaged with the sliding groove.
[0013] In one possible implementation, the rack is located at the end of the first slide rail away from the directional stop, and the gear is located near the center of the transmission plate along its length.
[0014] In one possible implementation, the transmission plate has U-shaped grooves extending along its length on both sides, the gear is close to the upper wall of the U-shaped groove, the first stop is connected to the lower wall of the U-shaped groove, the rack is connected to the top of the slide rail, the second stop is connected to the bottom of the slide rail, and the top of the rack and the bottom of the second stop are respectively in clearance fit with the upper and lower walls of the U-shaped groove.
[0015] In one possible implementation, the sliding groove consists of a groove bottom and groove walls symmetrically connected to both sides of the groove bottom, with an arc transition between the groove bottom and the groove walls, and the groove walls are provided with arc-shaped grooves that extend along the moving direction of the slide rail.
[0016] Beneficial effects: Compared with the prior art, the gear-type extended range linear slide rail pair provided in this application achieves extended range by cooperating with the sliders, gears and first stops on both sides of the transmission plate and the sliding grooves, racks and second stops on both sides of the slide rails. At the same time, after resetting, it can be relatively close to the transmission plate, making the overall structure compact and reducing the space occupied. In addition, since both sides of the slide rails are directly connected to the transmission plate, rather than indirectly connected through the intermediate rail, the negative impact on load capacity and rigidity can be reduced after the range is extended.
[0017] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description
[0018] Figure 1 A three-dimensional structural schematic diagram of the gear-type range extender linear slide pair of this application is shown.
[0019] Figure 2 An exploded structural diagram of the gear-type range extender linear slide pair of this application is shown.
[0020] Figure 3 The diagram shows the main structural view of the gear-type extended linear guide pair of this application.
[0021] Figure 4 A partial structural schematic diagram of the gear-type extended-range linear guide pair of this application is shown. Detailed Implementation
[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0023] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.
[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0025] refer to Figures 1 to 4 This application provides a gear-type extended-range linear slide rail assembly, including a transmission plate 10 and slide rails 20 symmetrically arranged on both sides of the transmission plate 10. To ensure convenient assembly and reduce the overall space occupied, the lengths of the transmission plate 10 and the slide rails 20 are equal. When the slide rails 20 on both sides are assembled to the transmission plate 10 without protruding from the transmission plate 10, the overall structure is more compact. The length direction of the transmission plate 10 is the moving direction of the slide rails 20. The transmission plate 10 is equipped with sliders 11, gears 12, and first stops 13 on both sides. The slide rails 20 on both sides are respectively provided with sliding grooves 201 that slide with the sliders 11, racks 22 that mesh with the gears 12, and second stops 23 that mesh with the first stops 13. This allows the slide rails 20 on both sides to directionally protrude from the transmission plate 10 in opposite directions based on the sliding relationship between the sliding grooves 201 and the sliders 11, the meshing relationship between the racks 22 and the gears 12, and the blocking effect of the first stops 13 and the second stops 23. This achieves range extension, or directional reset and remains at the transmission plate 10, reducing the space occupied. Remaining at the transmission plate 10 includes situations where the slide rails 20 retract into the transmission plate 10, where the slide rails 20 and the transmission plate 10 are aligned at both ends in the length direction, and where the slide rails 20 slightly protrude from the transmission plate 10. Furthermore, the two slide rails 20 can slide synchronously and protrude from the transmission plate 10, or they can operate independently and protrude from the transmission plate 10 in a asynchronous manner, or even only a single slide rail 20 protrudes from the transmission plate 10; none of these are limited here.
[0026] The sliding fit between slider 11 and sliding groove 201 mainly guides slide rail 20 and ensures movement stability. The meshing relationship between gear 12 and rack 22 allows slide rail 20 to be forced to move out of transmission plate 10 through rack 22 by rotating gear 12, or to be pulled back to return to transmission plate 10 after protrusion. The blocking effect of first stop 13 and second stop 23 ensures that slide rail 20 can only protrude out of transmission plate 10 in one direction. When both slide rails 20 protrude out of transmission plate 10 in opposite directions at the same time, the range of the slide rail pair can be extended. Since slide rail 20 is directly slidably connected to transmission plate 10, rather than indirectly connected through intermediate rail, the slide rail pair can effectively reduce the negative impact on load capacity and rigidity after the range is extended, resulting in stronger load capacity and more rigidity.
[0027] In one embodiment, the sliders 11, gears 12, and first stops 13 located on both sides of the transmission plate 10 are symmetrically distributed relative to the length direction of the transmission plate 10 and the central plane of the transmission plate 10, wherein the central plane is the central plane of the transmission plate 10 in the width direction. For example, when the slider 11 on one side of the transmission plate 10 is close to the left end, the slider 11 on the other side of the transmission plate 10 will be close to the right end, and the distribution position and quantity are obliquely symmetrical. In this way, it is easier to manufacture and form the slide rail pair, and it is also easier to maintain. At the same time, the two slide rails 20 can move in opposite directions more easily to achieve range extension.
[0028] In one embodiment, one side of the transmission plate 10 is defined as a first side 111, and the slide rail 20 located on the first side 111 is defined as a first slide rail 21. The first slide rail 21 is defined as being able to move in a first direction α and protrude from the transmission plate 10. The first stop 13 located on the first side 111 includes an end stop 131, wherein the end stop 131 is near the downstream end of the transmission plate 10 in the first direction α, that is, the end stop 131 is near the right end of the transmission plate 10. Obviously, the other side of the transmission plate 10 can be defined as the second side, and the end stop 131 on the second side is near the left end of the transmission plate 10. Correspondingly, the second stop 23 on the first slide rail 21 includes a direction stop 231 that cooperates with the end stop 131, and after the first slide rail 21 is reset in place on the transmission plate 10, the direction stop 231 is... The stop block 231 abuts against the downstream end of the end stop block 131. The reset position refers to the slide rail 20 being pulled back into position relative to the slide rail 20 protruding from the transmission plate 10. For example, in the length direction, when the transmission plate 10 and the slide rail 20 are aligned, the directional stop block 231 abuts against the right end of the end stop block 131. This can prevent the first slide rail 21 from moving to the left on the transmission plate 10, so that the first slide rail 21 can only move to the right and protrude from the transmission plate 10. That is to say, the second slide rail 24 on the second side can only move to the left and protrude from the transmission plate 10, thereby realizing the extension of the first slide rail 21 and the second slide rail 24 on the transmission plate 10.
[0029] In one embodiment, the first stop 13 located on the first side 111 further includes a center stop 132, wherein the center stop 132 is located near the center of the transmission plate 10 in the length direction, for example, at the center of the transmission plate 10, or near the center of the transmission plate 10. Correspondingly, the second stop 23 on the first slide rail 21 further includes a travel stop 232 that cooperates with the center stop 132, wherein the travel stop 232 is located at one end away from the direction stop 231, that is, at the left end of the first slide rail 21. In this way, when the first slide rail 21 moves to the right on the transmission plate 10, the travel stop 231 cooperates with the center stop 131 to limit the extreme movement position of the first slide rail 21, that is, to limit the movement stroke of the first slide rail 21, preventing the effective stroke from being exceeded during operation, thereby ensuring the safety of the slide rail pair operation.
[0030] In one embodiment, the sliders 11 on the first side 111 are spaced apart along the length of the transmission plate 10 and are located downstream of the first direction α. In this way, designing sliders 11 only near the right side can effectively save resources and reduce equipment costs compared to designing sliders 11 along the entire length of the transmission plate 10. At the same time, it does not affect the sliding fit requirements of the first slide rail 21 and can also reduce the impact on the overall rigidity and structural strength of the transmission plate 10.
[0031] In one embodiment, the first side surface 111 has a guide block 14 at the end away from the end stop 131. The guide block 14 slides in conjunction with the sliding groove 201 to guide and position the first slide rail 21 during its reset process, improving the stability of the first slide rail 21 and preventing it from deviating from its predetermined track. Similarly, the transmission plate 10 also has a guide block at the right end of the second side surface, which slides in conjunction with the second slide rail 24.
[0032] In one embodiment, the rack 22 is located at the end of the first slide rail 21 away from the direction stop 131, while the gear 12 is close to the center position of the transmission plate 10 in the length direction. This allows full utilization of the meshing relationship between the rack 22 and the gear 12 within the travel range and saves on the equipment cost of the rack 22.
[0033] In one embodiment, the transmission plate 10 has U-shaped grooves 101 extending along its length on both sides. The gear 12 is close to the upper wall of the U-shaped groove 101, and the first stop 13 is connected to the lower wall of the U-shaped groove 101. Correspondingly, the rack 22 is connected to the top of the slide rail 20, and the second stop 23 is connected to the bottom of the slide rail 20. The top of the rack 22 and the bottom of the second stop 23 are respectively clearance-fitted with the upper and lower walls of the U-shaped groove 101. Thus, the U-shaped groove 101 can protect the slide rail 20 and the rack 22 without affecting the meshing of the rack 22 and the gear 12.
[0034] In one embodiment, the sliding groove 201 consists of a groove bottom 211 and groove walls 212 symmetrically connected to both sides of the groove bottom 211. The groove bottom 211 and the groove walls 212 have a rounded transition. The groove walls 212 are provided with arc-shaped grooves 202, which extend along the moving direction of the slide rail 20. Due to the sliding engagement between the sliding groove 201 and the slider 11, the slider 11 is fitted into the sliding groove 201. This special structural design of the sliding groove 201 ensures the guiding effect of the sliding engagement on the slide rail 20, and also provides a limiting effect in the vertical direction of the slide rail 20's moving direction (including both left-right and up-down directions, where the arc-shaped groove 202 functions in the left-right direction and the groove walls 212 function in the up-down direction), preventing the slide rail 20 from disengaging from the slider 11, thereby improving the sliding stability of the slide rail 20.
[0035] It should be noted that the terms "first" and "second" used in this application are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.
[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.
Claims
1. A gear-type extended-range linear slide rail pair, characterized in that, The device includes a transmission plate and slide rails symmetrically arranged on both sides of the transmission plate. The length direction of the transmission plate is the moving direction of the slide rails. A slider, a gear, and a first stop are installed on both sides of the transmission plate. The slide rails on both sides are respectively provided with sliding grooves that slide with the sliders, racks that mesh with the gears, and second stops that mesh with the first stops. This allows the slide rails on both sides to directionally protrude from the transmission plate in opposite directions based on the sliding engagement relationship between the sliding grooves and the sliders, the meshing relationship between the racks and the gears, and the blocking effect of the first and second stops, thereby achieving range extension or directional reset and remaining at the transmission plate.
2. The gear-type range extender linear slide pair as described in claim 1, characterized in that, The transmission plate is the same length as the slide rail.
3. The gear-type range extender linear slide pair as described in claim 1, characterized in that, The sliders, gears, and first stops located on both sides of the transmission plate are symmetrically distributed relative to the length direction of the transmission plate and the center plane of the transmission plate, wherein the center plane is the center plane of the transmission plate in the width direction.
4. The gear-type range extender linear slide pair as described in claim 3, characterized in that, One side of the transmission plate is defined as the first side, the slide rail located on the first side is defined as the first slide rail, and the first slide rail is defined as being able to move in a first direction and protrude from the transmission plate. The first stop block located on the first side includes an end stop block, wherein the end stop block is close to one downstream end of the transmission plate in the first direction, and the second stop block on the first slide rail includes a directional stop block that cooperates with the end stop block, and after the first slide rail is reset in place on the transmission plate, the directional stop block abuts against the downstream end of the end stop block.
5. The gear-type range extender linear slide pair as described in claim 4, characterized in that, The first stop block located on the first side also includes a center stop block, wherein the center stop block is located near the center of the transmission plate in the length direction. The second stop block on the first slide rail also includes a travel stop block that cooperates with the center stop block, wherein the travel stop block is located at one end away from the direction stop block.
6. The gear-type range extender linear slide pair as described in claim 4, characterized in that, The sliders on the first side are spaced apart along the length of the transmission plate and are located downstream of the first direction.
7. The gear-type range extender linear slide pair as described in claim 4, characterized in that, The first side has a guide block at the end away from the end stop, and the guide block is slidably engaged with the sliding groove.
8. The gear-type extended-range linear slide rail pair as described in claim 4, characterized in that, The rack is located at the end of the first slide rail away from the direction stop, and the gear is located near the center of the transmission plate along its length.
9. The gear-type extended-range linear slide rail pair as described in claim 1, characterized in that, The transmission plate has U-shaped grooves extending along its length on both sides. The gear is close to the upper wall of the U-shaped groove. The first stop is connected to the lower wall of the U-shaped groove. The rack is connected to the top of the slide rail. The second stop is connected to the bottom of the slide rail. The top of the rack and the bottom of the second stop are respectively in clearance fit with the upper and lower walls of the U-shaped groove.
10. The gear-type extended-range linear slide rail pair as described in claim 1, characterized in that, The sliding groove consists of a groove bottom and groove walls symmetrically connected to both sides of the groove bottom. The groove bottom and the groove walls have a rounded transition. The groove walls are provided with arc-shaped grooves that extend along the moving direction of the slide rail.