Elastic pressing mechanism for assembling automobile seat sliding rail

Abstract

The utility model relates to the technical field of installation of automobile seat sliding rails, in particular to an elastic pressing mechanism for assembling the automobile seat sliding rails, which comprises an upper die pressing mechanism and a lower die, a sliding rail is fixed at the top of the lower die, and the upper die pressing mechanism comprises an upper die fixing block, a connecting block and a pressing block. The pressing block is connected with the upper die fixing block through the connecting block, adjusting springs are arranged on the two sides of the top of the pressing block and used for extruding the connecting block, the connecting block is located in the middle of a U-shaped groove in the top end of the pressing block, and two rolling wheels are installed in the U-shaped groove in the top end of the pressing block. By improving a male rail pressing mechanism, it is ensured that the positions of a male rail and a turbine can be automatically adjusted when a screw is tightened even if errors exist in the positions of a turbine mounting hole and a female rail hole, so that tightening alarms caused by the position errors are reduced, and the screw tightening alarm proportion is further reduced; and the tightening alarm caused by the position error of the turbine mounting hole and the mother rail hole is less than 0.5%.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat slide rail installation, in particular to an elastic pressing mechanism for assembling automobile seat slide rails. Background Art

[0002] The electric slide rails of car seats are driven by gears and worms. The female rail of the slide rail is fixed to the car body, and the male rail of the slide rail can move forward and backward in the female rail. The male rail is connected to the seat basin. When the male rail moves, it drives the seat forward and backward. The worm and the gear box are integrated and fixed on the male rail. There are two screw holes on the worm wheel (nut) connected to the worm. The worm wheel (nut) is fixed to the female rail by two screws. When the gear of the gearbox rotates, it drives the worm to rotate. Since the worm wheel (nut) is fixed on the female rail and the female rail is fixed to the car body, the worm wheel (nut) and the female rail are stationary. In this way, the worm, gear box and male rail first move forward and backward with respect to the female rail, thereby driving the seat to move forward and backward.

[0003] The worm wheel (nut) and worm gear easily rotate during assembly, causing dimensional variations between the gearbox and worm wheel (the pre-assembly dimension is 34.2 + 20 = 54.2 mm, with a relatively large product tolerance of + / - 2 mm). The equipment ensures the relative position of the worm wheel and the rail by pushing the gearbox. During the screw gun tightening process, the entire device controls the tightening angle, speed, displacement, and torque. If the relative position is large and the hole misalignment exceeds a certain value, the screw, worm wheel, and rail cannot be effectively tightened. The screw gun parameter monitoring alarm is triggered, and the process has a 2% screw tightening alarm. Therefore, an elastic clamping mechanism is provided for assembling automotive seat rails. Utility Model Content

[0004] The purpose of the present invention is to provide an elastic pressing mechanism for assembling automobile seat slide rails in order to solve the problems raised by the above-mentioned background technology in view of the defects of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elastic pressing mechanism for assembling automobile seat slide rails, comprising an upper mold pressing mechanism and a lower mold, the top of the lower mold is fixed with a slide rail, the upper mold pressing mechanism comprises an upper mold fixing block, a connecting block and a pressing block, the pressing block is connected to the upper mold fixing block through the connecting block, and adjusting springs are provided on both sides of the top of the pressing block for squeezing the connecting block so that the connecting block is in the middle of the U-shaped groove at the top of the pressing block, two rollers are installed inside the U-shaped groove at the top of the pressing block, both sides of the top of the connecting block are provided with U-shaped through holes that can enable the first equal height bolt to move, the U-shaped through holes are passed through the first equal height bolts and connected to the pressing block, and the pressing block drives the first equal height bolts to move in the U-shaped through holes of the connecting block through the rollers;

[0006] The upper mold fixing block is connected to the connecting block through two second equal-height bolts. The connecting block moves up and down along the second equal-height bolts. Two springs are provided in the upper mold fixing block. The bottom of the spring is inserted into the spring groove at the top of the connecting block.

[0007] As a preferred technical solution of the present invention, the moving direction of the first equal-height bolt in the U-shaped through hole is parallel to the horizontal direction of the U-shaped groove; the horizontal direction of the U-shaped groove is parallel to the horizontal direction of the slide rail.

[0008] As an optimal technical solution of the present invention, the upper mold clamping mechanism also includes an electric telescopic mechanism that enables the clamping block to move up and down. The upper mold fixing block is fixedly connected to the electric telescopic mechanism by bolts. The electric telescopic mechanism is installed on the frame, and the electric telescopic mechanism is an electric telescopic rod.

[0009] As a preferred technical solution of the present utility model, the slide rail includes a male rail and a female rail, the male rail is installed on the bottom of the car seat, and the female rail is installed on the car body; a gear box is installed on the male rail, a worm is connected to the gear box, a worm wheel is threadedly connected to the worm, and the worm wheel is fixed to the female rail by screws.

[0010] As a preferred technical solution of the present invention, the lower die is mounted on the frame via bolts, and a screw gun is also mounted on the lower die for automatically fixing the screws on the mother rail.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by improving the male rail clamping mechanism, it is ensured that even if there is an error in the position of the worm gear mounting hole and the female rail hole, the position of the male rail and the worm gear can be automatically adjusted when tightening the screw, thereby reducing the tightening alarm caused by the position error and further reducing the proportion of screw tightening alarms; the tightening alarm caused by the position error of the worm gear mounting hole and the female rail hole is less than 0.5%. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure inside the slide rail of the utility model;

[0013] Figure 2 This is a structural diagram of the elastic pressing mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the connection structure between the pressing block and the upper mold fixing block of the utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the pressing block and the upper mold fixing block of the utility model;

[0016] Figure 5 It is a cross-sectional view of the slide rail of the utility model.

[0017] In the figure: 1. Slide rail; 101. Male rail; 102. Female rail; 2. Worm; 3. Gearbox; 4. Worm wheel; 5. Screw; 7. Upper die clamping mechanism; 8. Lower die; 701. Upper die fixing block; 702. Connecting block; 703. Clamping block; 704. Roller; 705. First height bolt; 706. Roller; 707. Spring; 708. Second height bolt. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0019] Example: See Figure 1-5 The present invention provides a technical solution: an elastic pressing mechanism for assembling automobile seat slide rails, comprising an upper mold pressing mechanism 7 and a lower mold 8, the top of the lower mold 8 is fixed with a slide rail 1, the upper mold pressing mechanism 7 comprises an upper mold fixing block 701, a connecting block 702 and a pressing block 703, the pressing block 703 is connected to the upper mold fixing block 701 through the connecting block 702, and adjusting springs 704 are provided on both sides of the top of the pressing block 703 for squeezing the connecting block 702 so that the connecting block 702 is in the middle of the U-shaped groove at the top of the pressing block 703, and two rollers 706 are installed inside the U-shaped groove at the top of the pressing block 703. Both sides of the top of the connecting block 702 are provided with U-shaped through holes that can enable the first equal height bolt 705 to move. The first equal height bolt 705 passes through the U-shaped through hole and is connected to the pressing block 703, and the pressing block 703 drives the first equal height bolt 705 to move in the U-shaped through hole through the roller 706;

[0020] The upper mold fixing block 701 is connected to the connecting block 702 by two second equal-height bolts 708. The connecting block 702 moves up and down along the second equal-height bolts 708. Two springs 707 are provided in the upper mold fixing block 701. The bottom of the spring 707 is inserted into the spring groove at the top of the connecting block 702. When the clamping block 703 descends to squeeze the public rail 101, the two springs 707 can act as a buffer to ensure that the clamping block 703 does not squeeze the public rail 101. Under the action of the two springs 707, the bottom of the connecting block 702 is in contact with the upper surface of the two rollers 706. When the clamping block 703 presses the public rail, there is a certain gap between the top lower surface of the first equal-height bolt 705 and the upper surface of the U-shaped through hole. When the clamping block 703 moves, the top lower surface of the first equal-height bolt 705 will not contact the upper surface of the U-shaped through hole, thereby reducing friction.

[0021] The moving direction of the first equal height bolt 705 in the U-shaped through hole is parallel to the horizontal direction of the U-shaped groove; the horizontal direction of the U-shaped groove is parallel to the horizontal direction of the slide rail 1. When the public rail 101 drives the clamping block 703 to move left and right, the first equal height bolt 705 connected to the clamping block 703 moves left and right in the U-shaped through hole.

[0022] The upper mold clamping mechanism 7 also includes an electric telescopic mechanism that allows the clamping block 703 to move up and down. The upper mold fixing block 701 is fixedly connected to the electric telescopic mechanism by bolts. The electric telescopic mechanism is installed on the frame. The electric telescopic mechanism is an electric telescopic rod. The electric telescopic rod is used to lift the clamping block 703 up and down to squeeze and fix the public rail 101.

[0023] The slide rail 1 includes a male rail 101 and a female rail 102. The male rail 101 is installed on the bottom of the car seat, and the female rail 102 is installed on the car body. A gear box 3 is installed on the male rail 101, and a worm 2 is connected to the gear box 3. A worm wheel 4 is threadedly connected to the worm 2. The worm wheel 4 is fixed to the female rail 102 by a screw 5. A screw gun is used to automatically pass the screw 5 through the mounting hole of the worm wheel 4 and fix it to the female rail 102 to achieve automatic installation.

[0024] The lower die 8 is mounted on the frame by bolts. A screw gun is also mounted on the lower die 8 for automatically fixing the screws 5 on the parent rail 102 .

[0025] Working principle: An elastic clamping mechanism for assembling car seat slides. The employee places the slide on the equipment and positions it with the mother rail 102 and starts the equipment. The equipment servo mechanism pushes the gear box 3 to the left, thereby driving the worm gear of the modified male rail to move in the mother rail 102. After the servo mechanism moves to the set parameters, the mounting hole of the worm gear 4 is theoretically consistent with the mounting hole on the mother rail 102. The upper mold clamping mechanism 7 is lowered under the operation of the electric telescopic rod. After the clamping block 703 is pressed onto the upper surface of the male rail 101, the upper and lower compression springs 707 give the male rail a fixed elastic force and then the upper mold is fixed. There is a gap between the fixed block 701 and the connecting block 702, which can only be compressed but not contacted. The screw gun moves the screw upward and inserts the screw into the mounting hole of the worm gear. If there is a slight error in the position of the mounting hole on the worm gear and the mounting hole on the female rail, the torque of the screw gun will drive the worm gear 4, the male rail 101 and the clamping block 703 on the male rail 101 to move left and right, and the roller in the clamping block 703 rotates and rolls along the lower surface of the connecting block 702. The connecting block 702 does not move, and the left or right adjustment spring 704 is compressed. After the position is automatically adjusted, the screw can be smoothly screwed into the mounting hole of the worm gear.

[0026] The above embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An elastic pressing mechanism for assembling a car seat slide rail, comprising an upper mold pressing mechanism (7) and a lower mold (8), characterized in that: A slide rail (1) is fixed on the top of the lower die (8), and the upper die pressing mechanism (7) comprises an upper die fixing block (701), a connecting block (702) and a pressing block (703). The pressing block (703) is connected to the upper die fixing block (701) via the connecting block (702). Adjustment springs (704) are provided on both sides of the top of the pressing block (703) for squeezing the connecting block (702) so that the connecting block (702) is at the top of the pressing block (703). In the middle of the U-shaped groove, two rollers (706) are installed inside the U-shaped groove at the top of the pressing block (703), and both sides of the top of the connecting block (702) are provided with U-shaped through holes that can enable the first equal-height bolt (705) to move. The first equal-height bolt (705) passes through the U-shaped through hole and is connected to the pressing block (703). The pressing block (703) drives the first equal-height bolt (705) to move in the U-shaped through hole of the connecting block (702) through the roller (706); The upper mold fixing block (701) is connected to the connecting block (702) via two second equal-height bolts (708), and the connecting block (702) moves up and down along the second equal-height bolts (708). Two springs (707) are provided in the upper mold fixing block (701), and the bottom of the spring (707) is inserted into the spring groove at the top of the connecting block (702).

2. The elastic pressing mechanism for assembling automobile seat slide rails according to claim 1, characterized in that: The moving direction of the first equal-height bolt (705) in the U-shaped through hole of the connecting block (702) is parallel to the horizontal direction of the U-shaped groove; the horizontal direction of the U-shaped groove is parallel to the horizontal direction of the slide rail (1).

3. The elastic pressing mechanism for assembling automobile seat slide rails according to claim 1, characterized in that: The upper mold pressing mechanism (7) also includes an electric telescopic mechanism for causing the pressing block (703) to move up and down. The upper mold fixing block (701) is fixedly connected to the electric telescopic mechanism via bolts. The electric telescopic mechanism is mounted on a frame and is an electric telescopic rod.

4. The elastic pressing mechanism for assembling automobile seat slide rails according to claim 1, characterized in that: The slide rail (1) comprises a male rail (101) and a female rail (102), wherein the male rail (101) is mounted on the bottom of a car seat, and the female rail (102) is mounted on the car body; a gear box (3) is mounted on the male rail (101), a worm (2) is connected to the gear box (3), a worm wheel (4) is threadedly connected to the worm wheel (2), and the worm wheel (4) is fixed to the female rail (102) by screws (5).

5. The elastic pressing mechanism for assembling automobile seat slide rails according to claim 4, characterized in that: The lower die (8) is mounted on the frame via bolts, and a screw gun is also mounted on the lower die (8) for automatically fixing the screws (5) on the mother rail (102).

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