Seat slide device

Abstract

To reduce the number of components of a seat slide device.SOLUTION: A seat slide device 10 includes a connection bracket 3 and a gear box 7. The connection bracket 3 includes a bracket body 31, a cut and raised part 32 formed by cutting and raising a part of the bracket body 31; and a cutout part 33 provided at the bracket body 31. The gear box 7 includes a hook-shaped engagement part 73 which engages with an edge part of the cutout part 33. The engagement part 73 engages with the edge part of the cutout part 33 and the cut and raised part 32 is pressed to the gear box 7 to fix the gear box 7 to the connection bracket 3.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a seat slide device. [Background technology]

[0002] BACKGROUND ART A seat slide device that uses a motor as a drive source to slide a vehicle seat back and forth is known. Such a seat slide device is disclosed in Patent Document 1, for example.

[0003] The seat slide device of Patent Document 1 includes a lower rail member fixed to the vehicle body, an upper rail member fixed to the seat and slidably mounted relative to the lower rail member, a screw rotatably supported along the longitudinal direction of the upper rail member, a motor serving as a drive source for rotating the screw, and a gearbox that transmits the rotational force of the motor to the screw. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-135082 Summary of the Invention [Problem to be solved by the invention]

[0005] In a conventional seat slide device, the gearbox is fixed by bolts to a connecting bracket that connects a pair of upper rails, which increases the number of parts in the seat slide device.

[0006] An object of the present invention is to reduce the number of parts in a seat slide device. [Means for solving the problem]

[0007] The present invention provides the following aspects. (Item 1) a pair of left and right rail assemblies including lower rails fixed to a vehicle body, upper rails fixed to a seat and slidably disposed relative to the lower rails, and screws rotatably supported along the longitudinal direction of the upper rails; a connecting bracket that connects the pair of left and right upper rails; a motor serving as a drive source for rotating the screw; a gear box attached to the motor and configured to transmit the rotational force of the motor to the screw; Equipped with The connecting bracket includes a bracket body, a cut-out portion formed by cutting out a part of the bracket body, and a notch portion provided in the bracket body. A notch portion that is part of the space that is created after forming the cut-and-raised portion Equipped with The gearbox is A gear housing and a gear unit integrally formed on the upper part of the gear housing Hook-shaped engagement part and, Equipped with the engaging portion includes a first portion extending upward from the gear housing and a second portion provided above the first portion and at an angle of 90° to the first portion, The gear box is fixed to the connecting bracket by engaging the engaging portion with the edge of the notch and pressing the raised portion against the gear box. Seat slide device. [Effects of the Invention]

[0008] In the seat slide device of the present invention, the gear box can be fixed to the connecting bracket by pressing the raised portion against the gear box. As a result, fixing members such as bolts are not required, and the number of parts can be reduced. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic side view of a seat and a seat slide device. [Figure 2] 10 is a schematic cross-sectional view of the connecting bracket, the motor, and the gear bracket before the gear bracket is fixed to the connecting bracket. FIG. [Figure 3]10 is a schematic cross-sectional view of the connecting bracket, motor, and gear bracket after the gear bracket has been fixed to the connecting bracket. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] A seat slide device 10 of the present invention will be described with reference to the drawings.

[0011] <1. Overview of the seat slide device> 1 and 2, the seat slide device 10 includes a lower rail 1, an upper rail 2, a connecting bracket 3, a nut member 4, a screw 5, a motor 6, and a gear box 7. The lower rail 1, the upper rail 2, the nut member 4, and the screw 5 form a rail assembly. A pair of rail assemblies are provided on the left and right sides for each seat S.

[0012] The lower rails 1 are fixed to the vehicle floor via feet F. The upper rails 2 are fixed to the seat S and are assembled to the lower rails 1 so as to be slidable relative to the lower rails 1. A connecting bracket 3 connects the pair of left and right upper rails 2. A nut member 4 is fixed to the lower rails 1 with a bolt. A screw 5 extends along the longitudinal direction of the upper rail 2, is threadedly engaged with the nut member 4, and is supported by the upper rail 2 via a support member (not shown). A motor 6 is a drive source for rotating the screw 5. A gearbox 7 is connected to the screw 5 and transmits the drive force of the motor 6 to the screw 5.

[0013] When the motor 6 is driven, the driving force of the motor 6 is transmitted to the screw 5 by the gear box 7, causing the screw 5 to rotate relative to the nut member 4. As the screw 5 rotates, the upper rail 2 and the seat S to which the upper rail 2 is fixed move in the front-to-rear direction.

[0014] <2. Gearbox fixing structure> 2 and 3, the method of fixing the gearbox to the connecting bracket will be described.

[0015] The connecting bracket 3 is mounted on a pair of left and right upper rails 2. The connecting bracket 3 includes a bracket main body 31, a cut-and-raised portion 32, and a notch portion 33. The cut-and-raised portion 32 is a portion obtained by cutting out a part of the bracket main body 31. The notch portion 33 is a portion obtained by cutting out a part of the bracket main body 31. In one embodiment, the notch portion 33 is part of a space created after the cut-and-raised portion 32 is formed.

[0016] The gear box 7 includes a gear housing 71, a plurality of gears 72 arranged in the gear housing 71, and a hook-shaped engaging portion 73 provided on an upper portion of the gear housing 71. In one embodiment, the engaging portion 73 is formed integrally with the gear housing 71.

[0017] The engaging portion 73 includes a first portion 731 and a second portion 732. The first portion 731 extends upward from the gear housing 71. The second portion 732 is provided on top of the first portion 731 and forms a predetermined angle (excluding 0° and 180°, preferably 90°) with the first portion 731. In one embodiment, the second portion 732 is integrally formed with the first portion 731 and is formed by bending the upper portion of the first portion 731. Because the second portion 732 is configured to form a predetermined angle with the first portion 731, the engaging portion 73 has a hook shape that can be hooked onto the edge of the cutout portion 33 of the connecting bracket 3.

[0018] As shown in Fig. 2, the engaging portion 73 is engaged with the bracket body 31 by hooking the second portion 732 onto the edge of the notch portion 33. After engaging the engaging portion 73, the raised portion 32 can be pressed against the engaging portion 73, thereby fixing the gearbox 7 to the connecting bracket 3, as shown in Fig. 3.

[0019] <3. Features> In the seat slide device 10 of the present invention, the gear box 7 can be fixed to the connecting bracket 3 without using fixing members such as bolts, and therefore the number of parts can be reduced.

[0020] <4. Modifications> The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. The present invention can be modified, for example, as shown in the following modifications. The modifications described below can be combined as appropriate without departing from the spirit of the present invention.

[0021] (1) The cut-and-raised portion 32 may be pressed against a part of the gear box 7 other than the engaging portion 73.

[0022] (2) The number of cut-and-raised portions 32 is not limited to one, and multiple cut-and-raised portions 32 may be provided and pressed against the gear box 7. [Explanation of symbols]

[0023] 10 Seat slide device 1 Lower rail 2 Upper Rail 3 Connecting bracket 31 Bracket body 32 Cut-out section 33 Notch 5 screws 6 motors 7 Gearbox 73 Engagement part

Claims

[Claim 1] a pair of left and right rail assemblies including lower rails fixed to a vehicle body, upper rails fixed to a seat and slidably disposed relative to the lower rails, and screws rotatably supported along the longitudinal direction of the upper rails; a connecting bracket that connects the pair of left and right upper rails; a motor serving as a drive source for rotating the screw; a gear box attached to the motor and configured to transmit the rotational force of the motor to the screw; Equipped with The connecting bracket includes a bracket body, a cut-and-raised portion formed by cutting and raising a part of the bracket body obliquely upward, and a notch portion that is part of a space formed after the cut-and-raised portion is formed, The gear box includes a gear housing and a hook-shaped engaging portion integrally formed on an upper portion of the gear housing, the engaging portion includes a first portion extending upward from the gear housing and a second portion provided above the first portion and at an angle of 90° to the first portion, The gearbox is fixed to the connecting bracket by engaging the engaging portion with the edge of the notch and pressing the raised portion against the second portion of the gearbox. Seat slide device.

Images