Linkage type range extending linear slide pair

Abstract

The application discloses a linkage type range extending linear slide rail pair, which comprises a transmission plate and slide rails arranged on both sides of the transmission plate. A plurality of rollers are arranged on both sides of the transmission plate at intervals along the length direction. A transmission gear is arranged in a penetrating manner at a position close to the center of the length direction of the transmission plate. The slide rails on both sides are provided with guide grooves matched with the rollers and racks matched with the transmission gear. A first stop block is arranged on at least one side of the transmission plate. The slide rail on the side with the first stop block is provided with a second stop block matched with the first stop block. Under the meshing effect of the transmission gear, the slide rails on both sides can be oriented to protrude out of the transmission plate in opposite directions along the transmission plate, so that the range is extended, or the slide rails are oriented to reset and kept at the transmission plate. Therefore, the range of the linear slide rail can be increased, and the negative influence on the load capacity and rigidity after the range is extended can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of slide rail pair technology, and in particular to a linkage-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 linkage-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 linkage-type extended-range linear slide rail pair, including a transmission plate and slide rails disposed on both sides of the transmission plate. The length direction of the transmission plate is the moving direction of the slide rails. A plurality of rollers are installed at intervals along the length direction on both sides of the transmission plate. A transmission gear is provided through the transmission plate near the center position in the length direction. The slide rails on both sides are provided with guide grooves that cooperate with the rollers and are equipped with racks that mesh with the transmission gears. At least one side of the transmission plate is provided with a first stop block. The slide rail on the side with the first stop block is provided with a second stop block that cooperates with the first stop block. Under the meshing action of the transmission gears, the slide rails on both sides can be oriented to protrude from the transmission plate in opposite directions along the transmission plate to achieve extended range, or to be oriented to return to their original position on 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 slide rail is defined to be oriented to move in a first direction and protrude from the transmission plate; The first stop includes an end stop, wherein the end stop is located near one downstream end of the transmission plate in the first direction, and the second stop includes a directional stop that cooperates with the end stop, and the directional stop abuts against the downstream end of the end stop after the slide rail is reset in place on the transmission plate.

[0009] In one possible implementation, the first stop further includes a center stop, wherein the center stop is located near the center of the transmission plate in the longitudinal direction, and the second stop further includes a travel stop that cooperates with the center stop, wherein the travel stop is located near the end away from the directional stop.

[0010] In one possible implementation, the transmission plate has a left side and a right side, the first stop is located on the left side of the transmission plate, and the slide rail located on the left side is defined as the first slide rail.

[0011] In one possible implementation, the transmission plate has a locking hook at the left end away from the end stop, and the first slide rail has a locking groove at the end away from the direction stop that cooperates with the locking hook.

[0012] In one possible implementation, the roller is a cam, the guide groove is a K-shaped groove, the guide groove has recesses on the upper and lower groove walls that mate with the upper and lower protruding ends of the roller, and the rack is located at the bottom of the guide groove.

[0013] In one possible implementation, the first stop is symmetrically distributed on both sides of the transmission plate relative to both the length and width directions of the transmission plate.

[0014] In one possible implementation, the roller is a concave roller, and the upper and lower walls of the guide groove are symmetrically provided with protrusions that cooperate with the roller.

[0015] In one possible implementation, the rack is detachably connected to the top of the slide rail.

[0016] Beneficial effects: Compared with the prior art, the linkage extended range linear slide rail pair provided in this application can make the two slide rails move in opposite directions and protrude synchronously from the transmission plate through the cooperation of the rollers, transmission gears and first stop on the transmission plate with the guide grooves, racks and second stop on the two side slide rails, respectively, so as to achieve extended range. At the same time, they can also be relatively close after resetting, making the overall structure more compact and reducing the space occupied. In addition, since the two side 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 linkage-type extended-range linear slide rail pair of this application is shown.

[0019] Figure 2 An exploded structural diagram of the linkage-type extended-range linear guide pair of this application is shown.

[0020] Figure 3 A partial structural schematic diagram of the linkage-type extended-range linear guide pair of this application is shown.

[0021] Figure 4 A partial structural schematic diagram of the linkage-type extended-range linear guide pair of this application is shown.

[0022] Figure 5 A three-dimensional structural schematic diagram of the linkage-type extended-range linear slide rail pair of this application is shown.

[0023] Figure 6 An exploded structural diagram of the linkage-type extended-range linear guide pair of this application is shown. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] refer to Figures 1 to 4This application provides a linkage-type extended-range linear slide rail pair, including a transmission plate 10 and slide rails 20 disposed on both sides of the transmission plate 10. The slide rails 20 on both sides can be symmetrically distributed on both sides of the transmission plate 10 or asymmetrically distributed. The length direction of the transmission plate 10 is the moving direction of the slide rails 20. A plurality of rollers 11 are installed at intervals along the length direction on both sides of the transmission plate 10. At the same time, a transmission gear 12 is provided through the transmission plate 10 near the center position of the length direction. Correspondingly, the slide rails 20 on both sides are provided with guide grooves 201 that cooperate with the rollers 11, and racks 22 that mesh with the transmission gears 12 are installed. The through-path means that the transmission gears 12 protrude from both sides of the transmission plate 10. Since the transmission gears 12 are rotatable, during the rotation of the transmission gears 12, they will drive the slide rails 20 on both sides to move synchronously in opposite directions. Furthermore, the transmission plate 10 has a first stop 13 on at least one of its two sides, and the slide rail 20 on the side with the first stop 13 has a second stop 23 that cooperates with the first stop 13. This allows the slide rails 20 on both sides to protrude from the transmission plate 10 in opposite directions under the meshing action of the transmission gear 12, thereby extending the travel or resetting and remaining at the transmission plate 10. Remaining at the transmission plate 10 includes situations where the slide rail 20 retracts into the transmission plate 10, where the slide rail 20 is aligned with the transmission plate 10 at both ends in the length direction, and where the slide rail 20 slightly protrudes from the transmission plate 10. Furthermore, based on the meshing action of the transmission gear 12 and the cooperation of the roller 11 and the guide groove 201, the two slide rails 20 will slide synchronously along the transmission plate 10 and directionally protrude from the transmission plate 10 at both ends of the transmission plate 10 to achieve linkage extension. Since the slide rail 20 is directly slidably connected to the transmission plate 10, rather than indirectly connected through the intermediate rail, the slide rail pair can effectively reduce the negative impact on load capacity and rigidity after the extension, resulting in stronger load capacity and more rigidity.

[0028] In one embodiment, the transmission plate 10 and the slide rail 20 are of equal length. When the two slide rails 20 are assembled to the transmission plate 10, that is, in the reset position, the slide rails 20 do not protrude from the transmission plate 10, making the overall structure of the slide rail pair more compact.

[0029] In one embodiment, the slide rail 20 is defined to be able to move in a first direction α and protrude from the transmission plate 10; The first stop 13 includes an end stop 131, wherein the end stop 131 is located near the downstream end of the transmission plate 10 in the first direction α. ​​Correspondingly, the second stop 23 includes a directional stop 231 that cooperates with the end stop 131. After the slide rail 20 is reset in place on the transmission plate 10, the directional stop 231 abuts against the downstream end of the end stop 131. Thus, based on the cooperation of the end stop 131 and the directional stop 231, the slide rail 20 at the first stop 13 can only move in the first direction α and cannot move in the opposite direction. In addition, since the movement directions of the two slide rails 20 are opposite under the action of the transmission gear 12, whether the first stop 13 is set on one side of the transmission plate 10 or the first stop 13 is set on both sides, when the transmission gear 12 rotates, the slide rails 20 on both sides can only protrude from the transmission plate 10 in opposite directions and move synchronously to achieve range extension.

[0030] In one embodiment, the first stop 13 further includes a center stop 132, wherein the center stop 132 is located near the center of the transmission plate 10 along its length. Correspondingly, the second stop 23 further includes a travel stop 232 that cooperates with the center stop 132, with the travel stop 232 located near the end away from the directional stop 231. When the slide rail 20 moves directionally on the transmission plate 10, the travel distance of the slide rail 20 is limited by the cooperation of the travel stop 232 and the center stop 132, preventing the effective travel distance from being exceeded during operation, thereby ensuring the safety of the slide rail pair during operation.

[0031] In one embodiment, the two sides of the transmission plate 10 are the left and right sides, respectively, wherein the first stop block 13 is provided on the left side of the transmission plate 10, and the slide rail 20 located on the left side is defined as the first slide rail 21.

[0032] More preferably, the transmission plate 10 is provided with a locking hook 14 at the left end away from the end stop 131, and the first slide rail 21 is provided with a locking groove 202 at the end away from the direction stop 231 that cooperates with the locking hook 14. This can not only limit the movement in the length direction and strengthen the strength of the first slide rail 21 when closed, but also limit the movement in the vertical direction of the length direction and strengthen the resistance to longitudinal force. In this case, based on the function of the locking hook 14 and the locking groove 202, the transmission plate 10 does not need to be provided with rollers 11 at this end and the adjacent position, which can also save equipment costs.

[0033] More preferably, the roller 11 is a cam. The guide groove 201 is a K-shaped groove, and the guide groove 201 has recesses 203 on the upper and lower groove walls that cooperate with the upper and lower protruding ends of the roller 11, and the rack 22 is located at the bottom of the guide groove 201.

[0034] In another embodiment, combined with Figure 5 and Figure 6 The first stop blocks 13 are symmetrically distributed on both sides of the transmission plate 10 with respect to both its length and width. That is, the first stop blocks 13 on both sides are symmetrical not only with respect to the width direction of the transmission plate 10, but also with respect to the length direction of the transmission plate 10.

[0035] More preferably, the roller 11 is a concave roller, and the upper and lower walls of the guide groove 201 are symmetrically provided with protrusions 204 that cooperate with the roller 11. In this case, compared with the concave structure design, the slide rail 20 has higher strength and rigidity, which can further improve the structural strength of the entire slide rail pair and extend its service life.

[0036] In one embodiment, the rack 22 is detachably connected to the top of the slide rail 20, wherein the connection method may be a bolt connection.

[0037] 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.

[0038] 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 linkage-type extended-range linear guide pair, characterized in that, The device includes a transmission plate and slide rails on both sides of the transmission plate. The length direction of the transmission plate is the moving direction of the slide rails. Several rollers are installed at intervals along the length direction on both sides of the transmission plate. A transmission gear is provided through the transmission plate near the center position in the length direction. The slide rails on both sides are provided with guide grooves that cooperate with the rollers and are equipped with racks that mesh with the transmission gear. At least one side of the transmission plate is provided with a first stop block. The slide rail on the side with the first stop block is provided with a second stop block that cooperates with the first stop block. Under the meshing action of the transmission gear, the slide rails on both sides can directionally protrude from the transmission plate in opposite directions along the transmission plate to achieve range extension, or directional reset and remain at the transmission plate.

2. The linkage-type extended-range linear guide pair as described in claim 1, characterized in that, The transmission plate is the same length as the slide rail.

3. The linkage-type extended-range linear slide rail pair as described in claim 1, characterized in that, The slide rail is defined to be able to move in a first direction and protrude from the transmission plate; The first stop includes an end stop, wherein the end stop is located near one downstream end of the transmission plate in the first direction, and the second stop includes a directional stop that cooperates with the end stop, and the directional stop abuts against the downstream end of the end stop after the slide rail is reset in place on the transmission plate.

4. The linkage-type extended-range linear slide rail pair as described in claim 3, characterized in that, The first stop block 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 further includes a travel stop block that cooperates with the center stop block, wherein the travel stop block is located near the end away from the direction stop block.

5. The linkage-type extended-range linear slide rail pair as described in claim 3 or 4, characterized in that, The transmission plate has a left side and a right side, respectively. The first stop is located on the left side of the transmission plate, and the slide rail located on the left side is defined as the first slide rail.

6. The linkage-type extended-range linear slide rail pair as described in claim 5, characterized in that, The transmission plate has a locking hook at the left end away from the end block, and the first slide rail has a locking groove at the end away from the direction block that cooperates with the locking hook.

7. The linkage-type extended-range linear slide rail pair as described in claim 5, characterized in that, The roller is a cam, the guide groove is a K-shaped groove, and the guide groove has recesses on the upper and lower groove walls that cooperate with the upper and lower protruding ends of the roller. The rack is located at the bottom of the guide groove.

8. The linkage-type extended-range linear slide rail pair as described in claim 3 or 4, characterized in that, The first stop block is symmetrically distributed on both sides of the transmission plate in both the length and width directions.

9. The linkage-type extended-range linear slide rail pair as described in claim 8, characterized in that, The roller is a concave roller, and the upper and lower walls of the guide groove are symmetrically provided with protrusions that cooperate with the roller.

10. The linkage-type extended-range linear slide rail pair as described in claim 9, characterized in that, The rack is detachably connected to the top of the slide rail.

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