Rolling range extender linear guide pair

Abstract

This application discloses a rolling extended-stroke linear slide rail pair, including a linear slide rail and two slider bars. The linear slide rail has symmetrical slide rail grooves on opposite sides. Each slide rail groove has a first limiting groove symmetrically positioned on its upper and lower opposite groove walls. Both the slide rail grooves and the first limiting grooves extend along the length of the linear slide rail. The two slider bars are respectively embedded in the slide rail grooves on both sides. Each slider bar has a second limiting groove symmetrically positioned at its top and bottom opposite sides. The first and second limiting grooves cooperate to form a rolling channel. The top and bottom of each slider bar are provided with rolling elements suitable for rolling within the rolling channel. The slide rail grooves on both sides have stops at their opposite ends, allowing the slider bars on both sides to directionally protrude from the linear slide rail in opposite directions within their respective slide rail grooves, thus extending the stroke, or directionally resetting and remaining at the linear slide rail position. Therefore, this slide rail pair not only increases the stroke of the linear slide rail but also reduces the negative impact on load capacity and rigidity after stroke extension.

Description

Technical Field

[0001] This utility model relates to the field of slide rail pair technology, and in particular to a rolling range-extending 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 rolling 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 rolling range-extending linear slide rail pair, including a linear slide rail and two slider bars. The linear slide rail has symmetrical slide rail grooves on opposite sides. Each slide rail groove has a first limiting groove symmetrically arranged on its upper and lower opposite groove walls. Both the slide rail grooves and the first limiting grooves extend along the length of the linear slide rail. The two slider bars are respectively embedded in the slide rail grooves on both sides. Each slider bar has a second limiting groove symmetrically arranged on its top and bottom opposite sides. The first limiting groove and the second limiting groove on the same side cooperate to form a rolling channel. The top and bottom of each slider bar are provided with rolling elements suitable for rolling within the rolling channel. The slide rail grooves on both sides have stops at their opposite ends, allowing the slider bars on both sides to directionally protrude from the linear slide rail in opposite directions within their respective slide rail grooves, thereby extending the range, or directionally resetting and remaining at the linear slide rail.

[0007] In one possible implementation, the linear guide rail is of equal length to the slider bar.

[0008] In one possible implementation, the slide rail groove is symmetrically provided with first blocking members in the upper and lower groove walls at the end away from the stop block, and the first blocking members extend into the first limiting groove.

[0009] In one possible implementation, the slider bar is symmetrically provided with second blocking members at the top and bottom of one end near the stop, and the second blocking members extend into the second limiting groove.

[0010] In one possible implementation, both the first blocking member and the second blocking member are limiting pins, with the first blocking member perpendicularly penetrating the first limiting groove and the second blocking member perpendicularly penetrating the second limiting groove.

[0011] In one possible implementation, the top and bottom of the slider bar are symmetrically provided with retainers, and all the rolling elements located at the top and bottom of the slider bar are rotatably disposed within the retainers and are evenly distributed along the length direction of the retainers.

[0012] In one possible implementation, a connecting plate is provided on the inner side of the slider bar, and the connecting plate connects the retainer located at the top and bottom to form a U-shaped structure.

[0013] In one possible implementation, the linear slide rail consists of two U-shaped rails with their openings located on opposite sides, and the openings of the U-shaped rails are the slide rail grooves.

[0014] In one possible implementation, the rolling element is a ball or a cylinder.

[0015] Beneficial effects: Compared with the prior art, the rolling extended range linear slide rail pair provided in this application achieves extended range by using the rolling channel, rolling elements and stop blocks to make the slider bars on both sides protrude in the opposite direction from the linear slide rail. At the same time, after resetting, they can be relatively close to the linear slide rail, making the overall structure compact and reducing the space occupied. In addition, since the slider bars on both sides are directly connected to the linear slide rail, rather than indirectly connected through the intermediate rail, the negative impact on load capacity and rigidity can be reduced after the range is extended.

[0016] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the rolling range-extending linear guide pair of this application is shown.

[0018] Figure 2 An exploded structural diagram of the rolling range-extending linear guide pair of this application is shown.

[0019] Figure 3 This application shows Figure 2 A magnified structural diagram of part A in the middle.

[0020] Figure 4 This application shows Figure 2 A magnified structural diagram of part B.

[0021] Figure 5 A partial structural schematic diagram of the rolling range-extending 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 5This application provides a rolling extended-range linear slide rail pair, including a linear slide rail 10 and two slider bars 20. The linear slide rail 10 has symmetrical slide rail grooves 101 on opposite sides. The slide rail grooves 101 also have symmetrically arranged first limiting grooves 102 on opposite upper and lower groove walls. Both the slide rail grooves 101 and the first limiting grooves 102 extend along the length direction of the linear slide rail 10. The length direction of the linear slide rail 10 is the moving direction of the slider bars 20 and the extended-range direction of the slide rail pair. The two slider bars 20 are respectively embedded in the slide rail grooves 101 on both sides. The slider bars 20 also have symmetrically arranged second limiting grooves 201 on opposite top and bottom sides. The first limiting groove 102 and the second limiting groove 201 on the same side cooperate to form a rolling channel 202. Furthermore, the top and bottom of the slider bars 20 are provided with rolling elements 21 suitable for rolling within the rolling channel 202. In addition, the slide rail grooves 101 on both sides are provided with a stop block 11 at one end that is far apart from each other, so that the slider bars 20 on both sides can protrude from the linear slide rail 10 in opposite directions in the corresponding slide rail grooves 101 to achieve extended stroke, or to be oriented and reset to remain at the linear slide rail 10.

[0026] Specifically, taking the first side and the second side of the slide rail groove 101 as examples, the stop 11 on the first side is located at the left end of the linear slide rail 10, and the stop 11 on the second side is located at the right end of the linear slide rail 10. Based on the cooperation of the rolling element 21 and the rolling channel 202 and the blocking effect of the stop 11, the slider bar 20 on the first side can only move to the right and protrude from the linear slide rail 10, while the slider bar 20 on the second side can only move to the left and protrude from the linear slide rail 10, thereby increasing the stroke of the slide rail pair. The two slider bars 20 cannot move in opposite directions and protrude from the linear slide rail 10. Since both slider bars 20 are directly connected to the linear slide rail 10, rather than indirectly connected through the intermediate rail, the negative impact on the load capacity and rigidity can be reduced after the slide rail pair stroke is increased. After the two slider bars 20 are reset, the slider bars 20 remain at the linear slide rail 10, or are located inside the linear slide rail 10, or are flush with the linear slide rail 10 at both ends, or slightly protrude from the linear slide rail 10. All of these can make the structure of the slide rail pair more compact and occupy less space.

[0027] The two slider bars 20 can slide synchronously and protrude from the linear slide rail 10, or they can operate independently and protrude from the linear slide rail 10 in a asynchronous manner, or even only a single slider bar protrudes from the linear slide rail 10. No limitation is made here.

[0028] In one embodiment, the linear slide rail 10 and the slider bar 20 are of equal length. When the slider bars 20 on both sides are reset, the slider bars 20 on both sides and the linear slide rail 10 form a whole, which can make the overall structure more compact, and at the same time ensure that the slide rail pair has a relatively large travel within a limited space.

[0029] In one embodiment, the slide rail groove 101 is symmetrically provided with first blocking members 12 in the upper and lower groove walls at the end away from the stop block 11. At the same time, the first blocking members 12 extend into the first limiting groove 102, so as to block and limit the rolling member 21 in the slide rail groove 101 and prevent the rolling member 21 from leaving the slide rail groove 101 at one end of the first blocking member 12.

[0030] In one embodiment, the slider bar 20 is symmetrically provided with second blocking members 22 at the top and bottom of the end near the stop block 11. The second blocking members 22 extend into the second limiting groove 201. This allows the second blocking members 22 to block the rolling member 21 during the slider bar 20 reset process, preventing the rolling member 21 from disengaging from the slide rail groove 101 at one end of the second blocking member 22. It also allows the rolling member 21 to block the slider bar 20 when it extends out of the linear slide rail 10, thereby limiting the maximum travel of the slider bar 20. Combined with the function of the first blocking member 12, the slider bar 20 can only move back and forth within a limited travel range, making it more convenient to use and providing high safety and stability.

[0031] In one embodiment, the first blocking member 12 and the second blocking member 22 are both limiting pins, which are easy to manufacture and maintain. The first blocking member 12 penetrates the first limiting groove 102 vertically, that is, the first blocking member 12 not only penetrates the first limiting groove 102, but also the extension direction of the first blocking member 12 is perpendicular to the extension direction of the first limiting groove 102. The second blocking member 22 penetrates the second limiting groove 201 vertically, and the second blocking member 22 is parallel to the first blocking member 12.

[0032] In one embodiment, the top and bottom of the slider bar 20 are symmetrically provided with retainers 23, and all the rolling elements 21 located at the top and bottom of the slider bar 20 are rotatably disposed in the retainers 23 and evenly distributed along the length direction of the retainers 23. In this way, the retainers 23 can constrain the rolling elements 21 to maintain a suitable rolling pitch and to maintain a suitable guide stroke for all the rolling elements 21, resulting in better rolling guidance stability.

[0033] In one embodiment, a connecting plate 24 is provided on the inner side of the slider bar 20, and the connecting plate 24 connects to the retainers 23 located at the top and bottom, forming a U-shaped structure. That is, the top end of the connecting plate 24 located in the slide rail groove 101 on the same side is connected to the upper retainer 23, and the bottom end of the connecting plate 24 is connected to the lower retainer 23, so that the upper and lower retainers 23 form a complete or integrated structure, which has better structural stability and can further improve the guiding effect of the rolling element 21 on the slider bar 20.

[0034] In one embodiment, the linear slide rail 10 is composed of two U-shaped rails 13, with the openings of the two U-shaped rails 13 located on opposite sides, and the openings of the U-shaped rails 13 are the slide rail grooves 101, thereby facilitating the manufacturing and forming of the linear slide rail 10.

[0035] In one embodiment, the rolling element 21 is a ball or a cylinder. When the rolling element 21 is a ball, the first limiting groove 102 and the second limiting groove 201 are both circular grooves or arc-shaped grooves; when the rolling element 21 is a cylinder, the first limiting groove 102 and the second limiting groove 201 are both U-shaped grooves.

[0036] 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.

[0037] 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 rolling range-extending linear guide pair, characterized in that, The device includes a linear slide rail and two slider bars. The linear slide rail has symmetrical slide rail grooves on opposite sides. Each slide rail groove has a first limiting groove symmetrically positioned on its upper and lower opposite walls. Both the slide rail grooves and the first limiting grooves extend along the length of the linear slide rail. The two slider bars are respectively embedded in the slide rail grooves on both sides. Each slider bar has a second limiting groove symmetrically positioned on its top and bottom opposite sides. The first and second limiting grooves on the same side cooperate to form a rolling channel. The top and bottom of each slider bar are provided with rolling elements suitable for rolling within the rolling channel. The slide rail grooves on both sides have stops at their opposite ends, allowing the slider bars on both sides to directionally protrude from the linear slide rail in opposite directions within their respective slide rail grooves, thus extending their travel or directionally resetting and remaining at the linear slide rail.

2. The rolling range-extending linear guide pair as described in claim 1, characterized in that, The linear slide rail is the same length as the slider bar.

3. The rolling range-extending linear guide pair as described in claim 1, characterized in that, The slide rail groove has a first blocking member symmetrically provided in the upper and lower groove walls at the end away from the stop block, and the first blocking member extends into the first limiting groove.

4. The rolling range-extending linear guide pair as described in claim 3, characterized in that, The slider bar has second blocking members symmetrically provided at the top and bottom of the end near the stop block, and the second blocking members extend into the second limiting groove.

5. The rolling range-extending linear guide pair as described in claim 4, characterized in that, Both the first blocking member and the second blocking member are limiting pins. The first blocking member penetrates the first limiting groove vertically, and the second blocking member penetrates the second limiting groove vertically.

6. The rolling range-extending linear guide pair as described in claim 1, characterized in that, The top and bottom of the slider bar are symmetrically provided with retainers. All the rolling elements located at the top and bottom of the slider bar are rotatably disposed in the retainers and are evenly distributed along the length direction of the retainers.

7. The rolling range-extending linear guide pair as described in claim 6, characterized in that, The inner side of the slider bar is provided with a connecting plate, which connects the retainer located at the top and bottom to form a U-shaped structure.

8. The rolling range-extending linear slide rail pair as described in claim 1, characterized in that, The linear slide rail is composed of two U-shaped rails, with the openings of the two U-shaped rails located on opposite sides. The openings of the U-shaped rails are the slide rail grooves.

9. The rolling range-extending linear guide pair as described in claim 1, characterized in that, The rolling element is a ball or a cylinder.

Images