JPH0627470Y2 - Seat movement adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a seat movement adjusting device.

[Conventional technology]

For example, a seat mounted on a vehicle such as a passenger car is provided with a seat movement adjusting device capable of adjusting the position of the seat back and forth according to the preference of a seated person.

Conventionally, a slide rail has been widely used as a movement adjusting device for this type of seat.

That is, this slide rail is composed of a lower rail fixed to the floor side and an upper rail on which a seat is placed and fixed, and the upper rail is provided with good slidability via a roller or the like interposed between the lower rail and the lower rail. It is slidable. Normally, a pair of these slide rails are arranged on both the left and right sides, and while the seat is moved to an arbitrary position by the slide rails, the upper rail is locked to the lower rail by a predetermined locking mechanism to adjust the seat forward and backward movement. Be done.

[Problems to be solved by the device]

However, in the case of this conventional slide rail, when the seat is moved back and forth, the lower rail protrudes from the end of the seat and is very unsightly. There is also a way to close it. Furthermore, when the side of the seat is viewed, the slide rails are fully exposed, which greatly impairs the appearance.

The present invention has been made in view of the above problems, and an object thereof is to solve the above-mentioned problems by providing a seat movement adjusting device having a novel structure that is completely different from a slide rail.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the device of the present invention has a base plate (2) fixed to the floor side, an upper frame (3) on which a seat is placed and fixed, and two left and right front and rear parts. The inner end of the upper frame is rotatably supported by the base plate (2) so as to be horizontally rotatable, and the outer end is connected to the upper frame (3) so as to be horizontally rotatable and laterally movable. Support links (4) (5) and (6) (7) that support (3) movably in the front-rear direction with respect to the base plate (2).
And is axially supported in the front-back direction on the base plate (2) side,
Actuating screw shaft (19), which is driven to rotate by the motor (23)
Fixed to the upper frame (3) side, and the operating screw shaft (1
9) and a nut block (26) screwed together.

[Action]

In the device of the present invention thus constructed, when the motor (23) is driven to rotate the actuating screw shaft (19), the nut block (26) moves back and forth along the axial direction of the screw shaft (19). The links (4) (5) and (6) (7) are symmetrically rotated to move the upper frame (3), that is, the seat, in the front-rear direction with respect to the base plate (2). In this way, when the seat is moved back and forth, it is not unsightly because part of the rail is not exposed unlike the conventional slide rail, and a seating space for the seated person is sufficiently secured, and Since the support link is barely exposed on the side of the seat, it does not spoil the appearance.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, (1) shows the seat movement adjusting device as a whole, (2) is a base plate (lower plate), and (3) is an upper frame. The base plate (2) has a rectangular flat plate shape, and is fixed to the floor side by a fixing bolt (not shown) or the like. The upper frame (3) consists of the left and right side frames (3a) and (3b) and the front side frame (3c) and the rear side frame which are laterally stretched between the both side frames (3a) and (3b).
It is formed in a rectangular frame shape with (3d), and the seat S is placed and fixed on the upper frame (3) by a predetermined fixing means.

And this upper frame (3) is the base plate (2)
On the other hand, it is supported so as to be movable in the front-rear direction via a link mechanism. In FIG. 1, the left side (the direction of arrow a) is the front and the right side is the rear.

This link mechanism consists of four support links (4) (5) and (6) of equal length symmetrically arranged in front and rear, two left and right.
The support links (4), (5) and (6) (7) are each supported at one end (inner end) thereof in the center of the base plate (2) so as to be horizontally rotatable. There is. That is, the support shafts (8) and (9) are erected in the front and rear portions in the center of the base plate (2), and the support shafts (8) in the front portion are provided with support links (4) and (5). The ends are supported by their respective mating shafts, and the rear support shaft (9) is connected to the support link (6).
The inner ends of (7) are supported by fitting shafts. Each support link (4) (5) and (6) (7) has a cylindrical part (color) at its inner end.
Is formed, and in this cylindrical portion the support shaft (8) and
The fitting shaft is supported by (9).

On the other hand, the other end (outer end) of each of these support links (4) (5) and (6) (7) is horizontally attached to the left and right sides of the upper frame (3) via the movable connecting mechanism (10). Is rotatably and laterally movable.

The movable connecting mechanism (10) includes a planar U-shaped guide bracket (11) fixed laterally at four positions on the front and rear sides of the upper frame (3) and between the front and rear side surface parts of the guide bracket (11). The support links (4), (5) and (6) are slidably inserted in the lateral direction along the inner surface and are supported by the pivot shaft (12).
A bearing member (13) pivotally attached to the outer end of (7) so as to be rotatable in the horizontal direction, and the bearing member (13) is rotatably supported by a shaft (14), and the peripheral surface thereof is an upper frame (3). ) And a roller (15) rolling on the bottom surface. The guide bracket (11) has a guide elongated hole (11a) laterally formed on both front and rear side surfaces, and a shaft (14) for pivotally supporting the roller (15) on the bearing member (13).
Is assembled by communicating with this elongated guide hole (11a).

When the support links (4), (5), (6) and (7) are rotated about the support shafts (8) and (9) respectively, the movement of the movable connecting mechanisms (10) is accompanied by this movement. The bearing member (13) is rotated horizontally with respect to each support link, and the roller (15) rolls laterally in the guide bracket (11), which causes the upper frame (3) to move to the base plate (2). On the other hand, it is configured to be moved in the front-back direction.

The support links (4), (5), (6) and (7) have low inner ends on the side pivotally supported by the base plate (2) and outer ends on the side connected to the upper frame (3). It has a shape bent in the height direction so that the portion becomes higher, and reinforcing ribs (4a) (5a) and (6a) (7a) are formed in the longitudinal direction on the lower surface side thereof, respectively, and the upper frame ( The rigidity against the load applied from 3) is improved.

In this seat movement adjusting device (1), an operating mechanism (16) for moving the upper frame (3) is provided between the base plate (2) and the upper frame (3).

The operating mechanism (16) is configured as follows.

First, the front and rear bearing brackets (17) and (18) are provided upright in the center of the base plate (2), and the operating screw shaft (19) is provided between the front and rear bearing brackets (17) and (18). bearing
It is pivotally supported via (20) and (21). This working screw shaft
The (19) has a screw groove (19a) in the center thereof, and a gear (22) is fixed to the front end of the operating screw shaft (19).

A motor (23) is fixed on the base plate (2) below the actuating screw shaft (19), and a gear (24) is fixed on the drive shaft of the motor (23). . The gear (24) is meshed with the gear (22) of the operating screw shaft (19), whereby the motor (23) is driven to operate the operating screw shaft (19) via the gears (24) and (22). ) Is rotated.

On the other hand, in correspondence with this operating screw shaft (19), the upper frame
On the (3) side, a center frame (25) is erected and fixed between the central portions of the front frame (3c) and the rear frame (3d).
And the nut block (26) is fixed to the substantially central part of the center frame (25) by the fixing bolt (27),
The screw groove portion (19a) of the operating screw shaft (19) is inserted and screwed into the screw hole portion (26a) of the nut block (26).

A seat movement adjusting device of the present example configured as described above (1)
Drives the motor (23) to rotate the actuating screw shaft (19), the nut block (26) moves along the axial direction of the actuating screw shaft (19), which causes the upper frame (3) to move. The support links (4) (5) and (6) (7) are symmetrically rotated to move in the front-rear direction with respect to the base plate (2), that is, the front-rear movement adjustment of the seat S is performed.

And in the state where the seat S is moved back and forth in this way,
As described above, the problem of the conventional slide rail does not occur.

That is, when the seat S is moved back and forth, the base plate (2) is slightly visible from the end of the seat, but since the base plate (2) is a mere flat plate, it does not look unsightly like a slide rail. In addition, a sufficient foothold space for a seated person (especially, a person who sits in the rear seat) is secured, and there is no fear of damaging shoes or the like. Furthermore each support link (4)
Since (5), (6) and (7) are arranged on the inner side of the device and are barely exposed on the side of the seat, the appearance of the seat is not spoiled.

Further, in this seat movement adjusting device (1), the movement of the seat can be quickly adjusted by using the motor (23) as the movement driving source of the upper frame (3), and moreover, the driving force of this motor (23) is applied. Actuating screw shaft (19) and nut block (26) as a mechanism for transmitting to the upper frame (3)
Since the upper frame (3) is steplessly moved and adjusted by using the screw mechanism composed of (1) and (2), the seat can be accurately adjusted to the moving position that suits the seated person.

Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the configuration of this embodiment and various changes and modifications are possible.

[Effect of device]

As described above, according to the seat movement adjusting device of the present invention, it is possible to eliminate unpleasantness when the seat is moved back and forth, and
There is no danger of damaging shoes such as sufficient seat space for seated persons, and the link members are barely exposed on the side of the seat so that the seat does not lose its aesthetic appearance. Has a practical effect. Further, the device of the present invention uses a motor as a drive source,
Since the driving force of the motor is converted into the movement movement of the seat by the screw mechanism, there is also an effect that the seat can be quickly and accurately adjusted to the desired movement position of the seated person. Especially, it is effective when applied to the driver's seat of a passenger car.

[Brief description of drawings]

1 is a partially cutaway plan view showing an embodiment of the device of the present invention, FIG. 2 is the same partially cutaway front view, FIG. 3 is the same partially cutaway side view, and FIG. FIG. 7 is an explanatory diagram of an operation. In the figure, (2) is the base plate, (3) is the upper frame,
(4) (5) and (6) (7) are support links, (19) is the operating screw shaft, and (2
3) is a motor and (26) is a nut block.

Claims (1)

[Scope of utility model registration request] 1. A base plate fixed to the floor surface, an upper frame on which a seat is placed and fixed, and two left and right front and rear parts are arranged, and an inner end is horizontally rotated with respect to the base plate. A link member that is rotatably supported and has an outer end rotatably horizontally and laterally movably connected to the upper frame to support the upper frame so as to be movable in the front-rear direction with respect to the base plate. A seat including an operating screw shaft axially supported by the base plate in the front-rear direction and rotationally driven by a motor, and a nut block fixed to the upper frame and screwed with the operating screw shaft. Movement adjustment device.