Sliding rail driving part connecting structure

Abstract

The utility model belongs to the technical field of seats, and relates to a sliding rail driving part connecting structure which comprises a lower rail and an upper rail, the upper rail comprises a U-shaped body with the lower portion inversely buckled and a connecting plate connected to the middle of the upper surface of the U-shaped body, the connecting plate comprises a front connecting plate and a rear connecting plate, a mounting groove is formed between the front connecting plate and the rear connecting plate, and a motor shaft is inserted into the mounting groove in the vertical direction. One side of the front connecting plate and one side of the rear connecting plate are screwed or welded with a connecting piece with the side face covering the mounting groove, an opening is formed in the U-shaped body corresponding to the mounting groove, a gearbox is arranged in the opening, a motor is mounted on the upper portion of a motor support, and the lower portion of the motor support is fixedly connected with the front connecting plate and the rear connecting plate at the mounting groove. The upper portion of the motor shaft penetrates through the mounting groove to be directly connected with the motor, the lower portion of the motor shaft is inserted into the gear box to be directly connected with the driving gear in the gear box, and the motor shaft rotates to drive the upper rail to move relative to the lower rail through the transmission mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chair technical field, especially relate to a slide rail drive component connecting structure for seat. BACKGROUND

[0002] Due to the problems of long slide rail of gear and rack transmission such as start delay, sliding unevenness, lock delay, etc., currently long slide rail has been generally converted to use screw rod transmission, and the basic principle of screw rod transmission is that motor drives soft shaft to drive gear box, and the gear box comprises worm wheel and worm, wherein the worm wheel has internal thread and is engaged with the screw rod.

[0003] In order to optimize the noise performance of screw rod transmission, a drive component connecting structure is that the motor is vertically arranged above the slide rail, the motor shaft is directly connected with the motor and vertically penetrates through the slit of the lower rail and then is directly connected with the gear box; this connecting mode requires that the upper rail is slotted to avoid the motor shaft and has strength to avoid large deformation under stress, and the high-speed rotation of the motor shaft also needs to avoid friction with the environmental parts to generate noise, and the general solution is that the upper rail is folded or welded with a support at the upper end to improve the strength of the upper rail, and the lower end is slotted to avoid the motor shaft, and the support is also used for fixing the motor, and if the motor shaft still can be rubbed with the decorative strip, a protective sleeve structure also needs to be added. Overall, this structure is complex and does not meet the requirements of lightweight and low cost. SUMMARY

[0004] The utility model aims at providing a slide rail drive component connecting structure which is simple in structure, low in noise and high in strength.

[0005] The utility model is solved in the following way:

[0006] A slide rail drive component connecting structure comprises a lower rail and an upper rail which is slidably arranged in a sliding groove of the lower rail, the upper rail comprises a lower inverted "U" shaped body and a connecting plate which is connected to the middle of the upper surface of the "U" shaped body, the connecting plate comprises a front connecting plate and a rear connecting plate, a mounting groove in which a motor shaft is vertically inserted is arranged between the front connecting plate and the rear connecting plate, a connecting piece which covers the mounting groove in the side surface is screwed or welded to one side of the front connecting plate and the rear connecting plate, an opening is arranged on the "U" shaped body corresponding to the mounting groove, a gear box is arranged in the opening, a motor support is provided with a motor at the upper part and is fixedly connected with the front connecting plate and the rear connecting plate at the part of the mounting groove, the upper part of the motor shaft is directly connected with the motor by penetrating through the mounting groove, and the lower part is directly connected with a driving gear in the gear box, and the rotation of the motor shaft drives the upper rail to move relative to the lower rail through a transmission mechanism.

[0007] As a further optimization of the above technical solution, an arc-shaped groove which is concave in the vertical direction and away from the mounting groove is arranged in the middle of the connecting piece, so as to avoid noise caused by contact with the motor shaft.

[0008] As a further optimization of the above technical solution, the motor bracket includes an upper horizontal plate and two vertical plates fixed to the lower surface of the horizontal plate at a distance from front to back. The motor is installed on the upper surface of the horizontal plate, and the two vertical plates are fixedly connected to the front and rear connecting plates at the mounting groove, respectively.

[0009] As a further optimization of the above technical solution, positioning holes and / or threaded holes are respectively provided on the front and rear connecting plates at the mounting groove for fixing the two vertical plates together.

[0010] As a further optimization of the above technical solution, mounting holes are provided around the horizontal plate for fixing and mounting the motor.

[0011] As a further optimization of the above technical solution, the two ends of the lead screw are fixed in the grooves at both ends of the lower rail.

[0012] As a further optimization of the above technical solution, the motor shaft is a flexible shaft.

[0013] As a further optimization of the above technical solution, the lower part of the outer surface of the side wall of the "U"-shaped body is hinged at intervals along the length direction with rolling bearings that can roll on the bottom wall of the lower rail groove.

[0014] As a further optimization of the above technical solution, the lower part of the outer surface of the side wall of the "U"-shaped body is provided with bearings that elastically abut against the inner surface of the upper arm of the lower rail to eliminate the movement gap between the upper rail and the lower rail.

[0015] The outstanding advantages of this utility model compared to the prior art are:

[0016] 1. The upper rail of this utility model is divided into three parts, which solves the problems of flexible shaft avoidance, flexible shaft protection, and upper rail strength at the same time. There is no need for additional welded motor brackets for reinforcement and protective sleeves for protecting the flexible shaft, thus achieving lightweight and low cost.

[0017] 2. The front and rear connecting plates of this utility model are used for positioning and fixing the motor bracket. On the one hand, the middle connecting bracket can be miniaturized, and on the other hand, the welding deformation of the middle connecting piece and the front and rear connecting plates does not affect the positioning accuracy of the motor. At the same time, the motor bracket can be made of injection molded parts, which further reduces weight and cost.

[0018] 3. This utility model has a simple structure, low noise, and high strength, and is suitable for the connection structure of seat slide rail drive components. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0020] Figure 2 This is an exploded view of a portion of the motor and other structures of this utility model.

[0021] Figure 3 This is an exploded view of the upper rail and other partial structures of this utility model.

[0022] Figure 4 This is an exploded view of the upper rail structure of this utility model.

[0023] Figure 5 yes Figure 2 A magnified view of a portion of the image. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-5 :

[0025] A sliding rail drive component connection structure includes a lower rail 10 and an upper rail 20 slidingly disposed in a groove 11 of the lower rail 10. The upper rail 20 includes a U-shaped body 26 with its lower part inverted and a connecting plate connected to the middle of the upper surface of the U-shaped body 26. The connecting plate includes a front connecting plate 25 and a rear connecting plate 21. A mounting groove 43 for inserting a motor shaft 34 vertically is provided between the front and rear connecting plates 25 and 21. A connecting piece 23 covering the mounting groove 43 is screwed or welded to one side of the front and rear connecting plates 25 and 21. An opening 28 is provided on the U-shaped body 26 corresponding to the mounting groove 43. A gearbox 26 is fixed in the opening 28 by a mounting frame 29. A motor 3 is mounted on the upper part of a motor bracket 32. 0. The lower part is fixedly connected to the front and rear connecting plates 25 and 21 at the mounting groove 43. The upper part of the motor shaft 34 passes through the mounting groove 43 and is directly connected to the motor 30. The lower part is inserted into the gearbox 26 and is directly connected to the drive gear in the gearbox 26. The rotation of the motor shaft 34 drives the upper rail 20 to move relative to the lower rail 10 through the transmission mechanism. The gearbox includes a worm gear and a worm. The motor drives the worm in the gearbox to rotate through the drive motor shaft, which in turn drives the worm to rotate. The worm gear has an internal thread and meshes with the lead screw. When the worm gear rotates on the lead screw, it moves axially relative to the lead screw. The two ends of the "U"-shaped body 26 are fixed with reinforcing members 27 to enhance the rigidity and strength of the two ends of the "U"-shaped body 26.

[0026] As a further optimization of the above technical solution, the middle part of the connecting piece 23 is provided with an arc-shaped groove 44 that is recessed in the vertical direction away from the mounting groove 43, so as to avoid contact with the motor shaft and generate noise.

[0027] As a further optimization of the above technical solution, the motor bracket 32 ​​includes an upper horizontal plate 31 and two vertical plates 33 fixed to the lower surface of the horizontal plate 31 at a distance from front to back. The motor 30 is installed on the upper surface of the horizontal plate 31, and the two vertical plates 33 are fixedly connected to the front and rear connecting plates 25 and 21 at the interval, respectively.

[0028] As a further optimization of the above technical solution, the front and rear connecting plates 25 and 21 at the mounting groove 43 are respectively provided with positioning holes and / or threaded holes for fixing the two vertical plates 33 together.

[0029] As a further optimization of the above technical solution, the horizontal plate 31 is provided with mounting holes around its perimeter for fixing and mounting the motor 30.

[0030] As a further optimization of the above technical solution, the two ends of the lead screw are fixed in the grooves at both ends of the lower rail 10.

[0031] As a further optimization of the above technical solution, the motor shaft 34 is a flexible shaft.

[0032] As a further optimization of the above technical solution, the lower part of the outer surface of the side wall of the "U"-shaped body 26 is hinged at intervals along the length direction with rolling bearings 40 that can roll on the bottom wall of the slide groove 11 of the lower rail 10.

[0033] As a further optimization of the above technical solution, the upper part of the outer sidewall of the "U"-shaped body 26 is provided with bearings 41 that are elastically supported on the inner surface of the upper arm of the lower rail 10 to eliminate the movement gap between the upper rail 20 and the lower rail 10 along the length direction.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A sliding rail drive component connection structure, comprising a lower rail and an upper rail slidably disposed within a groove in the lower rail, characterized in that: The upper rail includes an inverted "U" shape at the bottom and a connecting plate connected to the middle of the upper surface of the "U" shape. The connecting plate includes a front connecting plate and a rear connecting plate. A mounting groove for inserting a motor shaft vertically is provided between the front and rear connecting plates. A connecting piece covering the mounting groove is screwed or welded to one side of the front and rear connecting plates. An opening is provided on the "U" shape corresponding to the mounting groove. A gearbox is provided in the opening. A motor is mounted on the upper part of the motor bracket, and the lower part is fixedly connected to the front and rear connecting plates at the mounting groove. The upper part of the motor shaft passes through the mounting groove and is directly connected to the motor. The lower part is inserted into the gearbox and is directly connected to the drive gear in the gearbox. The rotation of the motor shaft drives the upper rail to move relative to the lower rail through a transmission mechanism.

2. The sliding rail drive component connection structure according to claim 1, characterized in that: The connecting piece has an arc-shaped groove in the middle that is recessed vertically away from the mounting groove to avoid contact with the motor shaft and generating noise.

3. The sliding rail drive component connection structure according to claim 1, characterized in that: The motor bracket includes an upper horizontal plate and two vertical plates fixed to the lower surface of the horizontal plate at a distance from front to back. The motor is mounted on the upper surface of the horizontal plate, and the two vertical plates are fixedly connected to the front and rear connecting plates at the mounting slot, respectively.

4. The sliding rail drive component connection structure according to claim 3, characterized in that: The front and rear connecting plates at the mounting slot are respectively provided with positioning holes and / or threaded holes for fixing the two vertical plates together.

5. The sliding rail drive component connection structure according to claim 4, characterized in that: The horizontal plate has mounting holes around its perimeter for fixing and mounting the motor.

6. The sliding rail drive component connection structure according to claim 1, characterized in that: The two ends of the lead screw are fixed in the grooves at both ends of the lower rail.

7. The sliding rail drive component connection structure according to claim 1, characterized in that: The motor shaft is a flexible shaft.

8. A sliding rail drive component connection structure according to any one of claims 1-7, characterized in that: The lower part of the outer surface of the side wall of the "U"-shaped body is hinged at intervals along the length direction with rolling bearings that can roll on the bottom wall of the lower rail groove.

9. A sliding rail drive component connection structure according to any one of claims 1-7, characterized in that: The lower part of the outer surface of the side wall of the "U"-shaped body is provided with bearings that elastically abut against the inner surface of the upper arm of the lower rail to eliminate the movement gap between the upper and lower rails.

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