Dustproof sliding rail with rolling wheel elastic adjusting function

Abstract

According to the dustproof sliding rail with the rolling wheel elastic adjusting function, an occlusion structure is arranged between a dustproof rubber strip and a lower sliding rail, when an upper sliding rail moves forwards and backwards relative to the lower sliding rail, the dustproof rubber strip covered with an upper support of the upper rail is partially disengaged from the lower sliding rail, the two ends of a disengagement section are pressed tightly through rolling wheels, and therefore the dustproof rubber strip is prevented from being disengaged from the lower sliding rail; the connecting arm is of a U-shaped structure with a forward opening, the middles of the two sides of the connecting arm are hinged to the upper rail upper support respectively, the front ends of the two sides of the connecting arm are hinged to the centers of the two sides of the rolling wheel respectively, the middle of the rear end of the connecting arm is downwards provided with an elastic piece, and the elastic piece is in lap joint with the upper rail lower support and is in a compressed state under extrusion of the connecting arm. When the position of the occlusion structure floats up and down and drives the dustproof rubber strip to float up and down, the rolling wheel can always press the dustproof rubber strip downwards under the action of the elastic piece, so that the dustproof rubber strip can be normally occluded with the lower sliding rail. According to the dustproof sliding rail, the problem that the dustproof rubber strip cannot be normally engaged with the lower sliding rail due to the fact that the position of the rolling wheel in a traditional dustproof sliding rail is fixed is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and in particular to a dustproof slide rail with elastic adjustment function of rolling wheels. Background Technology

[0002] Traditional dustproof slide rails typically consist of basic components such as an upper slide rail, a lower slide rail, rolling rollers, tensioning rollers, and dustproof rubber strips. The dustproof rubber strips have an interlocking structure with the lower slide rail to cover gaps in the lower slide rail, thus preventing dust accumulation. The upper slide rail is generally fixed by an upper rail support and a lower rail support. When the upper slide rail slides back and forth relative to the lower slide rail, the dustproof rubber strip, which is encased in the upper rail support, partially detaches from the lower slide rail. The ends of the detached section are pressed together by rolling rollers installed in the upper rail support, while the middle is tensioned by the tensioning rollers, thus maintaining the stability of the dustproof rubber strip and its dustproof effect. However, traditional dustproof slide rails have a significant drawback: the position of the rolling rollers is fixed and cannot be adjusted. In actual production and use, this problem can lead to many adverse consequences due to various factors. On the one hand, during manufacturing, machining accuracy and assembly errors are difficult to completely avoid, which may result in height deviations in the installation position of the rolling rollers. On the other hand, the interlocking structure may also fluctuate in position during production due to process variations. When these situations occur, the dustproof rubber strip cannot properly engage with the lower slide rail, thus severely affecting the performance of the dustproof slide rail. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention aims to provide a dustproof slide rail with an elastic adjustment function for the rolling roller, so as to solve the problem that the position of the rolling roller in the traditional dustproof slide rail is fixed and cannot be adjusted, which causes the dustproof rubber strip to fail to properly engage with the lower slide rail, thus affecting the performance of the dustproof slide rail.

[0004] To achieve the above objectives, this invention proposes a dustproof slide rail with elastic adjustment function of the rolling roller, comprising an upper slide rail and a lower slide rail slidably connected front and rear, as well as rolling rollers, tensioning rollers, and dustproof rubber strips. The dustproof rubber strips are provided with an interlocking structure between them and the lower slide rail, which can cover gaps on the lower slide rail. The upper slide rail includes an upper support and a lower support fixed together. When the upper slide rail moves back and forth relative to the lower slide rail, the dustproof rubber strips, which are encased in the upper support, partially detach from the lower slide rail. The two ends of the detached section are pressed together by rolling rollers installed in the upper support, and the middle part of the detached section is tensioned by tensioning rollers installed in the upper support.

[0005] It also includes a connecting arm, which is a U-shaped structure with its opening facing forward. The middle parts of its two sides are respectively hinged to the upper support of the upper rail, and the front ends of its two sides are respectively hinged to the center positions of the two sides of the rolling roller. An elastic element is provided downward at the middle of its rear end. The elastic element overlaps the lower support of the upper rail and is compressed under the squeezing action of the connecting arm, which causes the connecting arm to have a tendency to rotate counterclockwise around its middle two sides. When the position of the interlocking structure floats up and down, and drives the position of the dustproof rubber strip to float up and down, the rolling roller can always press down on the dustproof rubber strip under the reaction force of the elastic element, so that the dustproof rubber strip can properly interlock with the lower rail.

[0006] In the above solution: the interlocking structure includes arrow features symmetrically arranged on the dustproof rubber strip or the lower slide rail, and cavity features symmetrically arranged on the lower slide rail or the dustproof rubber strip for the arrow features to extend into. When the position of the arrow features fluctuates up and down due to process reasons, the dustproof rubber strip will fluctuate up and down with the arrow features, and drive the rolling roller to fluctuate up and down accordingly. During this process, the rolling roller always presses down on the dustproof rubber strip, so that it can properly interlock with the lower slide rail. This pressure will not be too great and will not damage the arrow features.

[0007] In the above solution: the connecting arm is hinged to the upper rail support via a stepped rivet, and a limiting ring is provided between the connecting arm and the upper rail support, the limiting ring being fitted onto the stepped rivet. The stepped rivet has high strength and reliable connection performance, ensuring a stable connection between the connecting arm and the upper rail support; the limiting ring acts as a spacer, preventing the connecting arm and the upper rail support from rubbing against each other.

[0008] In the above solution: the rolling roller includes a metal shaft and a plastic roller, which are fixed together by injection molding, and the metal shaft is the central axis of the rolling roller. The metal shaft has high strength and rigidity, while the plastic roller has a relatively low density, which can significantly reduce the overall weight of the rolling roller compared to an all-metal structure.

[0009] In the above solution: each end of the metal shaft has an annular groove, and each front end of the connecting arm has an Ω-shaped hole. The Ω-shaped holes on both sides can be respectively engaged in the corresponding annular grooves to achieve a hinged connection between the front ends of the connecting arm and the rolling roller. Operation is simple; during assembly, simply align the Ω-shaped holes on the front ends of the connecting arm with the annular grooves at both ends of the metal shaft and gently push them in to complete the connection. No complicated tools or tedious steps are required, greatly shortening assembly time.

[0010] In the above scheme: the elastic element is a rubber block, which has excellent elasticity and flexibility.

[0011] In the above scheme: the middle of the rear end of the connecting arm is provided with a locking hole for locking the rubber block. The rubber block is locked and fixed in the locking hole. The structure is simple and easy to disassemble and assemble. When it is necessary to install or replace the rubber block, simply align the rubber block with the locking hole and forcefully insert or pull it out.

[0012] In the above solution: the upper rail support is formed by two sheet metal parts on the left and right sides fastening together to form a cover shape. The upper rail support and the lower rail support are connected by bolts. The structure is simple and easy to assemble.

[0013] In the above scheme: the front and rear ends of the dustproof rubber strip are fixedly installed on the lower slide rail. When the upper slide rail moves back and forth, the dustproof rubber strip in front of the upper slide rail can be pulled out from the lower slide rail and covered into the bracket on the upper rail. The rolling roller at the rear presses the dustproof rubber strip into the gap of the lower slide rail.

[0014] The beneficial effects of this invention are as follows: 1. By setting a connecting arm and an elastic element, the rolling roller has elastic adjustment capability. When the position of the engagement structure floats up and down, causing the position of the dustproof rubber strip to change, the rolling roller can always press down on the dustproof rubber strip under the reaction force of the elastic element, ensuring that the dustproof rubber strip and the lower slide rail are properly engaged. This adaptive adjustment function effectively solves the problem that when the installation position of the rolling roller has a height deviation, or the position of the engagement structure floats up and down due to process reasons, the dustproof rubber strip cannot properly engage with the lower slide rail. 2. The connecting arm adopts a U-shaped structure with the opening facing forward. The middle of both sides is hinged to the upper support of the upper rail, the front ends of both sides are hinged to the center positions of both sides of the rolling roller, and the rear end is provided with an elastic element to overlap the lower support of the upper rail. This structural design is ingenious, with tight connections and reasonable layout between the components. While realizing the elastic adjustment function of the rolling roller, it does not increase the overall volume and weight of the slide rail excessively, ensuring the slide rail's lightness and compactness, and facilitating installation and use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the seat slide rail structure of the present invention (with the upper rail bracket on one side removed).

[0016] Figure 2 This is a schematic diagram of the seat slide rail structure of the present invention.

[0017] Figure 3 This is a partial schematic diagram of the sliding track of the present invention.

[0018] Figure 4 This is a partial schematic diagram of the dustproof adhesive strip of the present invention.

[0019] Figure 5 This is a schematic diagram of some parts of the present invention.

[0020] Figure 6 This is an exploded view of some parts of the present invention. Detailed Implementation

[0021] like Figure 1 As shown in Figure 6, a dustproof slide rail with elastic adjustment function of rolling roller is mainly composed of an upper slide rail and a lower slide rail 1 that are slidably connected in the front and rear, as well as a connecting arm 9, a rolling roller 3, a tensioning roller 4 and a dustproof rubber strip 2.

[0022] A locking structure is provided between the dustproof rubber strip 2 and the lower slide rail 1 to cover the gaps on the lower slide rail 1. The upper slide rail includes an upper rail upper bracket 7 and an upper rail lower bracket 8 fixed together. When the upper slide rail moves back and forth relative to the lower slide rail 1, the dustproof rubber strip 2, which is covered by the upper rail upper bracket 7, partially detaches from the lower slide rail 1. The two ends of the detached section are pressed by the rolling rollers 3 installed in the upper rail upper bracket 7, and the middle part of the detached section is tensioned by the tensioning rollers 4 installed in the upper rail upper bracket 7.

[0023] The connecting arm 9 is a U-shaped structure with its opening facing forward. Its two sides are hinged to the upper support 7 on the upper rail, and its two front ends are hinged to the center of the two sides of the rolling roller 3. An elastic element 6 is provided downward at the center of its rear end. The elastic element 6 overlaps the lower support 8 on the upper rail and is compressed under the squeezing action of the connecting arm 9, which makes the connecting arm 9 have a tendency to rotate counterclockwise around its two sides.

[0024] When the position of the interlocking structure moves up and down, and causes the position of the dustproof strip 2 to move up and down, the rolling roller 3 can always press down on the dustproof strip 2 under the reaction force of the elastic element 6, so that the dustproof strip 2 can properly interlock with the lower rail 1.

[0025] Ideally, the interlocking structure includes arrow features A symmetrically arranged on the dustproof strip 2 or the lower slide rail 1, and cavity features B symmetrically arranged on the lower slide rail 1 or the dustproof strip 2 for the arrow features A to extend into. When the position of the arrow features A fluctuates up and down due to process reasons, the dustproof strip 2 will fluctuate up and down with the arrow features A, and drive the rolling roller 3 to fluctuate up and down accordingly. During this process, the rolling roller 3 always presses down on the dustproof strip 2, so that it can properly interlock with the lower slide rail 1.

[0026] The elastic element 6 can be made of rubber. The rubber block has excellent elasticity and flexibility, and the reaction force generated will not be too large and will not damage the arrow feature A.

[0027] Ideally, the connecting arm 9 is hinged to the upper rail bracket 7 via a stepped rivet 10, and a limiting ring 5 is provided between the connecting arm 9 and the upper rail bracket 7, with the limiting ring 5 fitted onto the stepped rivet 10. The stepped rivet 10 has high strength and reliable connection performance, ensuring a stable connection between the connecting arm 9 and the upper rail bracket 7; the limiting ring 5 acts as a spacer, preventing mutual friction between the connecting arm 9 and the upper rail bracket 7.

[0028] Ideally, the rolling roller 3 comprises a metal shaft and a plastic roller, which are integrally bonded together by injection molding, with the metal shaft serving as the central axis of the rolling roller 3. The metal shaft possesses high strength and rigidity, while the plastic roller has a relatively low density, thus significantly reducing the overall weight of the rolling roller 3 compared to an all-metal structure.

[0029] Ideally, each end of the metal shaft has an annular groove 3a, and each side of the connecting arm 9 has an Ω-shaped hole 9a at its front end. The Ω-shaped holes 9a on both sides can be respectively engaged in the corresponding annular grooves to achieve a hinged connection between the front ends of the connecting arm 9 and the rolling roller 3. The operation is simple. During assembly, simply align the Ω-shaped holes 9a on the front ends of the connecting arm 9 with the annular grooves 3a at both ends of the metal shaft and gently push them in to complete the connection. No complicated tools or tedious steps are required, greatly shortening the assembly time.

[0030] Ideally, the connecting arm 9 has a locking hole 9b at the middle of its rear end for locking the rubber block. The rubber block is locked and fixed in the locking hole 9b. The structure is simple and easy to install and remove. When it is necessary to install or replace the rubber block, simply align the rubber block with the locking hole 9b and forcefully insert or pull it out.

[0031] Ideally, the upper rail support 7 is formed by two sheet metal parts snapping together to form a cover shape, and the upper rail support 7 and the lower rail support 8 are connected by bolts, which is simple in structure and easy to assemble.

[0032] Ideally, the front and rear ends of the dustproof strip 2 are fixedly installed on the lower slide rail 1. When the upper slide rail moves back and forth, the dustproof strip 2 at the front of the upper slide rail can be pulled out from the lower slide rail 1 and covered into the upper support 7 of the upper rail. The rolling roller 3 at the rear presses the dustproof strip 2 into the gap of the lower slide rail 1.

[0033] Ideally, there should be two tensioning rollers 4, spaced back to back, with the spacing between them being less than the spacing between the two rolling rollers 3. The two tensioning rollers 4 and the two rolling rollers 3 should be arranged in an isosceles trapezoidal shape. A disc is provided at both ends of the tensioning rollers 4, and a dustproof strip 2 is located between the two discs to limit its lateral movement.

Claims

1. A dustproof slide rail with elastic adjustment function of rolling roller, comprising an upper slide rail and a lower slide rail (1) slidably connected front and rear, as well as a rolling roller (3), a tensioning roller (4) and a dustproof rubber strip (2), wherein the dustproof rubber strip (2) and the lower slide rail (1) are provided with an interlocking structure to cover the gaps on the lower slide rail (1), the upper slide rail includes an upper rail bracket (7) and an upper rail lower bracket (8) fixed together, wherein when the upper slide rail moves back and forth relative to the lower slide rail (1), the dustproof rubber strip (2) encased in the upper rail bracket (7) partially detaches from the lower slide rail (1), and the two ends of the detached section are pressed by the rolling roller (3) installed in the upper rail bracket (7), and the middle part of the detached section is tensioned by the tensioning roller (4) installed in the upper rail bracket (7), characterized in that: It also includes a connecting arm (9), which is a U-shaped structure with the opening facing forward. Its two sides are respectively hinged to the upper rail support (7) and its two front ends are respectively hinged to the center of the two sides of the rolling roller (3). Its rear end is provided with an elastic element (6) facing downward. The elastic element (6) overlaps the lower rail support (8) and is compressed under the squeezing action of the connecting arm (9), so that the connecting arm (9) has a tendency to rotate counterclockwise around its two sides. When the position of the interlocking structure floats up and down, and drives the position of the dustproof rubber strip (2) to float up and down, the rolling roller (3) can always press down the dustproof rubber strip (2) under the reaction force of the elastic element (6), so that the dustproof rubber strip (2) can normally interlock with the lower rail (1).

2. The dustproof slide rail with elastic adjustment function of the rolling wheel as described in claim 1, characterized in that: The interlocking structure includes arrow features (A) symmetrically arranged on the dustproof rubber strip (2) or the lower slide rail (1), and cavity features (B) symmetrically arranged on the lower slide rail (1) or the dustproof rubber strip (2) for the arrow features (A) to extend into.

3. The dustproof slide rail with elastic adjustment function of the rolling wheel as described in claim 1, characterized in that: The connecting arm (9) is hinged to the upper rail bracket (7) by a stepped rivet (10).

4. The dustproof slide rail with elastic adjustment function of the rolling wheel according to claim 3, characterized in that: A limiting ring (5) is provided between the connecting arm (9) and the upper rail bracket (7), and the limiting ring (5) is sleeved on the step rivet (10).

5. The dustproof slide rail with elastic adjustment function of the rolling wheel as described in claim 1, characterized in that: The rolling roller (3) includes a metal shaft and a plastic roller, which are fixed together by injection molding. The metal shaft is the central axis of the rolling roller (3), and its two ends extend beyond the plastic roller.

6. The dustproof slide rail with elastic adjustment function of the rolling wheel according to claim 5, characterized in that: The metal shaft has an annular groove (3a) at each end, and the connecting arm (9) has an Ω-shaped hole (9a) at each of its two front ends. The two Ω-shaped holes (9a) can be respectively engaged in the corresponding annular grooves to achieve the hinged connection between the two front ends of the connecting arm (9) and the rolling wheel (3).

7. The dustproof slide rail with elastic adjustment function of the rolling wheel as described in claim 1, characterized in that: The elastic element (6) is a rubber block. The rubber block has excellent elasticity and flexibility.

8. The dustproof slide rail with elastic adjustment function of the rolling wheel according to claim 7, characterized in that: The connecting arm (9) has a locking hole (9b) at the middle of its rear end for locking a rubber block, and the rubber block is locked and fixed in the locking hole (9b).

9. The dustproof slide rail with elastic adjustment function of the rolling wheel according to claim 1, characterized in that: The upper rail bracket (7) is made of two sheet metal parts that are fastened together to form a cover shape. The upper rail bracket (7) and the lower rail bracket (8) are connected by bolts.

10. The dustproof slide rail with elastic adjustment function of the rolling wheel according to claim 1, characterized in that: The front and rear ends of the dustproof rubber strip (2) are fixedly installed on the lower slide rail (1). When the upper slide rail moves back and forth, the dustproof rubber strip (2) in front of the upper slide rail can be pulled out from the lower slide rail (1) and covered into the upper support (7) of the upper rail. The rolling roller (3) at the rear presses the dustproof rubber strip (2) into the gap of the lower slide rail (1).

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