JP2590393Y2 - Vehicle seat device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat apparatus for a vehicle such as an automobile in which a seat slide mechanism and a seat lifter mechanism are integrated.

[0002]

2. Description of the Related Art In a seat device for a vehicle such as an automobile, a seat reclining mechanism capable of adjusting a tilt of a seat back forward and backward can be adjusted so that a seat cushion can be adjusted forward and backward so as to ensure an optimal driving posture of a driver. The seat slide mechanism and seat cushion can be adjusted up and down,
In particular, a seat lifter mechanism is provided that can adjust the vertical movement of both the front and rear sides of the seat or independently. In addition to performing these adjustment operations manually, recently, many high-quality seat devices are operated by the driving force of an electric motor.

In this type of conventional electric seat device, a power unit including an electric motor and a speed reducer is provided in a conventional seat device, and a mechanism for using the driving force for forward and backward movement adjustment or vertical movement adjustment is added. This is the only configuration. That is, the seat device includes a seat slide mechanism fixed to the floor of the vehicle body, a seat lifter mechanism mounted on the seat slide mechanism so as to be vertically movable, and a reclining mechanism mounted on the seat lifter mechanism. .

The seat slide mechanism, the seat lifter mechanism, and the seat reclining mechanism are each manufactured independently, and are usually integrated into one at the stage of assembling the vehicle body. Therefore, at present, a single manufacturer rarely creates a seat apparatus having the above-mentioned mechanisms as a whole.

[0005] Therefore, for example, the seat lifter mechanism mounted on the seat slide mechanism is provided with a leg bracket for coupling to the upper rail of the seat slide mechanism, and is itself a completed product.

That is, a connecting rod is pivotally supported on the front and rear portions of a pair of left and right leg brackets on the inner side and the outer side, and a link is rotatably connected to the connecting rod, and a sheet is mounted on the link. Bracket is connected rotatably. In addition, the base plate of the seat reclining mechanism is connected to the side bracket to constitute a seat reclining device.

[0007] The cause of this is that, in the course of the development of the automobile industry in Japan, each organization has developed in a division of labor, and as a result of accumulated technology and know-how over the years, others have been assigned to other organizations at this stage. New entrants are said to be losing sooner or later.

[0008] Recently, as a part of rationalization measures in the automobile industry, rationalization and integration of components mounted on a vehicle have been proposed, and development of a seat device for realizing this proposal is being promoted. Therefore, it is necessary to rationalize and integrate the above-described seat lifter mechanism, seat slide mechanism, seat reclining mechanism and the like to provide an integrated product.

Therefore, in order to construct a seat device integrating the above-mentioned known mechanisms, for example, attention has been paid to a seat slide mechanism and a seat lifter mechanism, and the seat slide mechanism has a substantially inverted T-shaped cross section. If an upper rail is used and the connecting rods in front of and behind the seat lifter mechanism are pivotally supported on the vertical wall of the upper rail, if the leg bracket is to be omitted, the vehicle body floor will not be flat, It is well known that there is a difference, so that the slide height between the outer side and the inner side is different, so that the connecting rod cannot be supported horizontally as it is.

[0010] This is the same in the case of a conventional seat lifter mechanism having a leg bracket. For this purpose, a mounting platform having a height difference between the inner side and the outer side at the lower ends of both ends of the lower rail of the seat slide mechanism. Was fixedly arranged on the vehicle body floor.

[0011]

However, when the seat slide mechanism and the seat lifter mechanism are electrically driven to be powered, the power unit is mounted on the upper rail of the seat slide mechanism. It is desirable to make the most effective use of the device within a limited range, and it is inappropriate to dispose a mounting base below the lower rail.

In view of the above circumstances, the present invention aims at rationalizing and integrating a seat lifter mechanism by focusing on a seat slide mechanism and a power unit in a vehicle seat device.

[0013]

According to the present invention, there is provided a vehicle seat apparatus comprising a seat slide mechanism and a seat lifter mechanism mounted thereon, the vehicle seat apparatus including an inner side of a seat slide mechanism fixed to a vehicle body floor. A part of the motor bracket of the seat slide mechanism that fixes the height difference of the upper rail from the outer side to the upper rail is partially extended to provide a connecting rod support portion, and the connecting rod of the seat lifter mechanism is horizontally mounted on the support portion. It is characterized by being rotatably supported and supplemented. The upper rail has a substantially inverted T-shaped cross section and a vertical wall protruding upward from the lower rail.

[0014]

[Function] The height difference of the upper rail between the inner side and the outer side of the seat slide mechanism fixed to the vehicle body floor is formed by integrally forming the support portion that horizontally supports the connecting rod of the seat lifter mechanism on the motor bracket. In addition, the seat slide mechanism can be shared without any change, and the integration of the seat slide mechanism and the seat lifter mechanism is reduced, the weight is reduced, the number of parts is reduced, and the cost is reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, an inner side (INR) and an outer side (OTR) in which an upper rail 2 having a substantially inverted T-shaped cross section is slidably engaged with a lower rail 1 in a longitudinal direction.
A pair of left and right seat slide mechanisms are provided,
The upper rails 2, 2 are connected by a front connecting rod 5 and a rear connecting rod 6, and side brackets 10, 11 are connected to links 7, 9 connected to these connecting rods 5, 6 via an auxiliary link 8 on the front side. Are rotatably mounted on the shaft, and the base bracket 12 is connected to the side brackets 10 and 11 so as to be able to move up and down, thereby forming an inner unit 3 and an outer unit 4 of the seat lifter mechanism.

The front connecting rod 5 and the rear connecting rod 6
In the inner unit 3, the upright wall 2a of the upper rail 2
Are directly supported by shafts 5a and 6a, respectively. In the outer unit 4, the shafts 5a and 6a are respectively supported on support portions 13 and 14 suspended on the front and rear portions of the standing wall 2a of the upper rail 2.
6a. The support portions 13 and 14 are integrally formed with a motor bracket 15 on which a power unit of the seat lifter mechanism is mounted, at a required height so as to be horizontally arranged so as to compensate for a height difference between the upper rails 2 and 2.

As shown in FIGS. 5 to 7, the motor bracket 15 is provided on one of the longitudinal sides of a fixing portion 16 for mounting and fixing the pair of front and rear motors 22, 22, respectively. These support portions 13 and 14 are respectively provided with locking portions 17 and 17 for locking to the standing wall portion 2a, through holes 18 for inserting the shafts 5a and 6a of the connecting rods 5 and 6, and the standing wall portion 2a. Bolt insertion hole 1 connected to
9 are drilled.

Further, a mounting portion 20 which rises in a substantially orthogonal direction is formed integrally with an intermediate portion of one longitudinal side of the fixing portion 16, and this mounting portion 20 is attached to the upright wall 2 a of the upper rail 2.
And fix it with bolts and nuts. Further, a through hole 28 for a bearing of the screw rod 23 is formed in a corner on one side of the longitudinal side.

The gear case 21 is fixed to the fixing portion 16. A pair of motors 22, 22 are arranged in parallel with the upper rail 2 with the gear case 21 interposed therebetween. Further, a pair of screw rods 23 are arranged in a straight line from the gear case 21 in parallel with the motors 22. A nut block 24 is screwed into the screw rod 23 so as to be movable in the axial direction, and one end of a pair of arms 25 is rotatably supported by holding a part of the nut block 24. Lever 26 at the other end of 25
Are rotatably supported.

The levers 26, 26 are respectively connected to the front connecting rod 5 and the rear connecting rod 6 by welding or the like. The ends of the screw rods 23 are nut blocks 23
Is rotatably supported in bearing through holes 28 of the motor bracket 15.

A motor bracket 30 having a substantially L-shaped cross section is fixedly mounted on the upright wall 2a in front of the upper rail 2 to which the motor bracket 15 is mounted, and a drive unit 31 which engages with the lower rail 1 is mounted on the motor bracket 30. An electric motor 33 for driving the driving unit 31 by the shaft 32 and a driving unit 34 for engaging with the lower rail 1 are attached and fixed to the front side of the opposed upright wall 2a by a motor bracket 35 having a substantially L-shaped cross section. And a power unit of the seat slide mechanism.

Further, a reclining arm 36 is mounted on the base bracket 12 so as to be rotatable about a shaft 37 so as to constitute a seat reclining mechanism. A power unit in which the shaft 37 is driven to rotate by a motor 38 is provided. It is configured. A control box 3 for controlling the power units of the reclining mechanism, the seat slide mechanism and the seat lifter mechanism.
9 is disposed on the vehicle body floor. Reference numeral 40 denotes a pan on which a seat cushion is placed.

Next, another embodiment shown in FIG. 8 will be described. In this embodiment, the screw rod 2 of the power unit is used.
Instead of supporting the end portions of the brackets 3 and 23 in the bearing through holes 28 and 28 of the motor bracket 15, the brackets 41 and 41 loosely fitted to the connecting rods 5 and 6 are rotatably supported. In addition, the end of the front connecting rod 5 is formed so that the upper portion of the motor bracket 30 for fixing the driving unit 31 of the power unit of the seat slide mechanism is formed high to integrally form the shaft support 30a and to support the shaft support 30a. did.

The bracket 41 is formed of a cylindrical body formed of a synthetic resin, metal, or the like, and has a shaft hole into which the end of the screw rod 23 outside the stopper 27 is inserted. Even when the bracket 41 is formed of a synthetic resin, the end of the screw rod 23 is always in a fixed position and only rotates around the axis, and is not a bearing member, and therefore has sufficient durability. Therefore, for weight reduction, the bracket 41 may be made of a synthetic resin. Thus, since it is not necessary to support the end of the screw rod 23 on the motor bracket 15, the size of the motor bracket can be reduced. The other configuration is substantially the same as that of the above-described embodiment, and a duplicate description will be omitted.

The operation of the above embodiment will be described. In order to drive the seat lifter mechanism, the electric motor 22,
When the cylinder 22 is rotated forward, the screw rods 23, 23 rotate forward and the nut blocks 24, 24 move away from the gear case 21, so that the arms 25, 25
Pushes the levers 26, 26 to rotate the front connecting rod 5 and the rear connecting rod 6, respectively, and the links 7, 8, 9 rotate to raise the base brackets 12, 12.

Therefore, the base bracket 1 is set at a desired height.
When the rotation of the electric motors 22 and 22 is stopped at the position where the motors 2 and 12 are raised, the positions are fixed. Further, when the electric motors 22, 22 are driven as they are, the movement of the nut blocks 24, 24 is detected, a limit switch (not shown) is operated, and the base brackets 12, 12 reach a predetermined maximum height.

Conversely, when the electric motors 22, 22 are rotated in the reverse direction, the base brackets 12, 12 are lowered, the limit switch is operated and stopped, and the original state is restored. Since the electric motors 22 and 22 are separated for front drive and rear drive, it is described that the front and the rear of the seat cushion can be independently raised and lowered by driving either one of them. As you did.

By operating the power unit of the seat slide mechanism, the upper rails 2 are moved in the longitudinal direction of the lower rails 1 as desired. The reclining arm 36, 36 is tilted forward and backward as desired by operating the power unit of the reclining mechanism.

[0029]

According to the invention described above, even if there is a difference in height between the outer side and the inner side of the upper rail of the seat slide mechanism, the motor bracket is attached to the lower upper rail, and the motor bracket is attached to the lower side. Since the support portion that horizontally supports the connecting rod of the seat lifter mechanism is integrally formed, the seat slide mechanism can be used as it is without any change, so that the seat slide mechanism and the seat lifter mechanism can be integrated.

In addition, the seat lifter mechanism is mounted by directly supporting the connecting rod on the upper rail having a substantially T-shaped cross section of the seat slide mechanism or indirectly via a motor bracket, so that the seat lifter mechanism is indispensable to the conventional seat lifter mechanism. The leg bracket can be omitted, which leads to a rationalization, a reduction in weight, and a reduction in cost.

Also, the motor bracket should have only the power unit attached in the first place,
Since the connecting rod of the seat lifter mechanism also serves as the shaft support portion, multifunctionality of at least one component can be achieved.

[Brief description of the drawings]

FIG. 1 is a skeleton perspective view of a vehicle seat device according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a rear view of FIG. 1;

5A is a partial plan view of FIG. 1, FIG. 5B is a right side view thereof, and FIG. 5C is a left side view thereof.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a rear view of FIG. 5;

FIG. 8 is a perspective view showing another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lower rail 2 ... Upper rail 2a ... Standing wall part 5, 6 ... Connecting rod 13, 14 ... Support part 15 ... Motor bracket

Claims (2)

(57) [Scope of request for utility model registration] 1. A vehicle seat apparatus comprising a seat slide mechanism and a seat lifter mechanism mounted thereon, wherein a difference in height between an inner rail and an outer rail of a seat slide mechanism fixed to a vehicle body floor is determined by the upper rail. A vehicle wherein a motor bracket of a seat slide mechanism fixed to a vehicle is partially extended to provide a support portion for a connecting rod, and the support portion supports the connecting rod of a seat lifter mechanism horizontally and rotatably to compensate. For seating equipment. 2. The vehicle seat device according to claim 1, wherein the upper rail has an upright wall portion having a substantially inverted T-shaped cross section and protruding upward from the lower rail.