JP2555981Y2 - Slide adjuster for seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a slide adjuster for a vehicle seat.

[0002]

2. Description of the Related Art As shown in FIG.
Is composed of a seat bottom 11 for seating and a seat back 12 for backrest. The seat bottom 11 has a pair of side frames 2 as a skeleton, and a pair of slide rails 3 in the vehicle width direction is provided at the bottom. The slide rail 3 includes an upper movable slide rail 31 and a lower fixed slide rail 32, and the side frame 2 is integrally connected to the movable slide rail 31. And this movable slide rail 31
Is slidably fitted to the fixed slide rail 32 fixed to the floor F, so that the movable slide rail 31 slides on the fixed slide rail 32,
The seat bottom 1 can be moved back and forth. That is, the seat bottom 11 is configured such that the front and rear positions can be arbitrarily set according to the physique of the seated person.

Further, in order to maintain the position set as described above, a forward / backward movement locking means 4 is provided below the seat bottom 11. Conventionally, as shown in FIG. 4, the locking means 4 includes a bracket 41 attached to the inside of the movable slide rail 12, a horizontal shaft 42 rotatably provided on the bracket, and fixed to the horizontal shaft 42. A lock plate 43 provided, a locking piece 44 provided at the tip of the lock plate 43, and a coil spring 4 for applying a biasing force to the lock plate 43 to rotate it clockwise.
5. A locking plate 46 integral with the floor F provided with a locking hole 46a into which the locking piece 44 is fitted, and provided on the front end of the horizontal shaft 42 so as to be substantially orthogonal to the horizontal shaft 42. The operation lever 47 is provided.

Therefore, since the locking piece 44 of the lock plate 43 is normally fitted in the locking hole 46a of the locking plate 46, the movable slide rail 31 of the slide rail 3 and the fixed slide rail 32 Are locked to each other. Therefore, the movable slide rail 31
Does not move, and the seat bottom 11 is in a state of holding a predetermined position.

[0005] When the occupant of the seat bottom 11 rotates the operation lever 47 in the counterclockwise direction as shown by a two-dot chain line, the lock plate 43 also rotates around the horizontal shaft 42 against the urging force of the coil spring 45. The locking piece 44 at the distal end of the locking plate 43 is disengaged from the locking hole 46a of the locking plate 46. The seated person can freely move the seat bottom 11 back and forth to make a desired rotation. The position can be set.

After setting the position of the seat bottom 11 described above,
When the operating lever 47 is released, the lock plate 43 is rotated clockwise by the urging force of the coil spring 45, and the locking piece 44 is fitted into the locking hole 46a of the locking plate 46 again. The seat bottom 11 is locked so as not to move.

[0007]

By the way, when the vehicle is suddenly braked during driving operation of the automobile, the seat bottom 11 is not required.
, A large force is applied in the advancing direction, so that the locking of the seat bottom 11 by the above-mentioned front-rear movement locking means 4 may be released. In order to prevent this, the urging force of the coil spring 45 pressing the lock plate 43 may be increased. However, if it does so, the operation of the operation lever 47 becomes heavy, and the operability is deteriorated.

The present invention has been made in order to solve the above-mentioned conventional problems, and has a forward / backward movement locking means 4 which does not deteriorate the operability of the operation lever 47 even if the urging force of the coil spring 45 is increased. It is an object of the present invention to provide a seat slide adjuster.

[0009]

According to a first aspect of the present invention, there is provided a seat slide adjuster, wherein a first bracket is attached to an inner portion of a movable slide rail provided at a bottom portion of a seat bottom of an automobile seat, A first horizontal shaft is rotatably provided on the bracket, a lock plate is fixed to the first horizontal shaft, and a locking piece is provided at the tip of the lock plate. A first arm is provided at the front end of the first horizontal axis so as to be orthogonal to the first horizontal axis at a front end of the first horizontal axis. In the seat slide adjuster, a second bracket is attached to the inside of the movable slide rail and in front of the first bracket, and a second horizontal shaft is rotatably attached to the second bracket. It is provided so as to extend in the same direction as one bracket, an operation lever is provided at a front end of the second horizontal axis, and a rear end of the second horizontal axis is orthogonal to this axis. A second arm is provided,
The first arm and the second arm are connected so as to cooperate with each other, and the distance between the axis of the second horizontal axis and the axis of the connection axis is equal to the axis of the first horizontal axis and the connection axis. Is shorter than the distance from the axis.

[0010]

The distance between the axis of the second horizontal shaft and the axis of the connecting shaft is determined by the distance between the axis of the first horizontal shaft and the axis of the connecting shaft. Because it is shorter than the distance from the heart, the biasing force of the coil spring is transmitted to the operating lever in a weakened state according to the distance ratio, so even if the biasing force of the coil spring is made stronger than before, it became stronger The force required to rotate the operation lever does not increase in proportion to the force, and can be reduced by setting the above ratio of distance appropriately. Deterioration of lever operability can be avoided.

[0011]

FIG. 1 is a perspective view showing a skeleton of a vehicle seat equipped with a seat slide adjuster according to the present invention.

As shown in FIG. 1, an automobile seat 1 is provided.
Is composed of a seat bottom 11 for seating and a seat back 12 for backrest. And the seat bottom 11
Has a pair of side frames 2 as a skeleton,
At its bottom, there is provided a pair of slide rails 3 in the vehicle width direction comprising a movable slide rail 31 and a fixed slide rail 32 below the movable slide rail 31. The movable slide rail 31 slides on the fixed slide rail 32 fixed to the floor F. The seat bottom 1 can be moved back and forth by sliding the movable slide rail 31 on the fixed slide rail 32 because it is freely fitted.

As shown in FIGS. 2 and 3, a first bracket 41 is provided inside the movable slide rail 31.
The first bracket 41 is provided with a first horizontal shaft 42 rotatably. A lock plate 43 is fixed to the first horizontal shaft 42, and a locking piece 44 is provided at a tip of the lock plate 43.

The locking pieces 44 are set so as to fit into any one of a large number of locking holes 46a provided in the longitudinal direction of a locking plate 46 integral with the floor F by the urging force of the urging means. I have. As the urging means, a coil spring 45 fitted on the first horizontal shaft 42 is used. One end of the coil spring 45 is abutted against the side of the movable slide rail 31 and the other end is locked while being urged against the edge of the lock plate 43. It is rotated clockwise around one horizontal axis 42 and is pressed against the locking plate 46.

At the front end of the first horizontal shaft 42, a first arm 48 is provided so as to be orthogonal to this shaft.

On the other hand, a second operating mechanism 5 is provided inside the movable slide rail 31 and in front of the first bracket 43. That is, the first arm 4
A second bracket 51 is attached to the side of the movable slide rail 31 in front of 8, and a second horizontal shaft 52 is rotatably provided on the bracket 51.

An operation lever 47 is provided at the front end of the second horizontal shaft 52 so as to be substantially perpendicular to the shaft, and at the rear end of the second horizontal shaft 52, A second arm 53 is provided so as to be orthogonal to
The first arm 48 and the second arm 53 are connected by a connecting shaft 54 so as to cooperate with each other. The connecting shaft 54 extends horizontally from the second horizontal shaft 52 in the direction of the first arm 48, and is slidably fitted in a long hole 48 a provided in the first arm 48.

In the second arm 53, the distance S2 between the axis of the second horizontal shaft 52 and the axis of the connecting shaft 54 is important. That is, in the seat slide adjuster of the present invention, the distance S2 between the axis of the second horizontal shaft 52 and the axis of the connecting shaft 54 is determined by the distance between the axis of the first horizontal shaft 42 and the axis of the connecting shaft 54. Is shorter than S1. Accordingly, the displacement of the rotation angle of the second arm 53 when the second horizontal shaft 52 is rotated is larger than the displacement of the rotation angle of the first arm 48 that cooperates with the second arm 53 around the first horizontal axis 42. .

Since the seat slide adjuster of the present invention is configured as described above, when the occupant of the seat bottom 11 adjusts the seating position in the front-back direction, the operating lever 47 is pulled up. Then, the second horizontal shaft 52 is rotated counterclockwise.

Then, the second arm 53 fixed to the rear end of the second horizontal shaft 52 also moves counterclockwise to the second horizontal shaft 5.
2, the first arm 48 connected to the second arm 53 via the connection shaft 54 also includes a coil spring 45.
Is turned around the first horizontal axis 42 in a counterclockwise direction against the urging force, and a lock plate 43 provided integrally therewith.
Also rotates in the same direction, and the locking piece 44 at the tip thereof
The movable slide rail 31 is slidable on the fixed slide rail 32 in order to release the engagement with the locking hole 46a.

In this case, the distance S2 of the second arm 53 is
Since the distance is set smaller than the distance S1 of the first arm 48, the first horizontal shaft 42 can be rotated with less force than the original urging force of the coil spring 45 based on the principle of leverage. The pressing force of the locking piece 44 against the locking plate 46 is increased by increasing the urging force of Can be performed with a small force as in the prior art.

If the above state is maintained (that is, the operation lever 47 is pulled up), the seat bottom 11 is moved back and forth to adjust the position, and the hand is released from the operation lever 47. The lock plate 43 is rotated clockwise around the first horizontal axis 42 by the operation opposite to the above, and the locking piece 44 is locked in the locking hole 4 of the locking plate 46 arriving at that position.
6a, the movable slide rail 31 is locked in forward and backward movement, and the seat bottom 11 does not move.

[0023]

As described above, in the seat slide adjuster of the present invention, an operating mechanism is newly added to the conventional back-and-forth movement locking means. A second horizontal axis is provided in front of and opposed to a horizontal axis (first horizontal axis) provided with an arm (first arm) in front of the center of the second horizontal axis. An operation lever is provided so as to be substantially orthogonal to the axis, and a second arm is provided at a rear end of the second horizontal axis so as to be orthogonal to the axis. The two arms are connected by a connection shaft so as to cooperate with each other, and the distance between the axis of the second horizontal shaft and the axis of the connection shaft is the axis of the first horizontal shaft and the axis of the connection shaft. With a coil spring. Even if the force is stronger than before, the force required to rotate the operating lever does not increase in proportion to the increased force, but decreases by setting the above ratio of distance appropriately As a result, it is possible to avoid deterioration of the operability of the operation lever caused by increasing the strength of the coil spring.

Therefore, the urging force of the coil spring is increased, and the fitting force of the lock plate locking piece into the locking hole is made stronger than in the prior art, so that the forward and backward movement of the seat bottom at a predetermined position can be reliably locked. Also, the operation lever can be lightly operated in the same state as before or in an improved state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a skeleton of a seat bottom on which a seat slide adjuster of the present invention is mounted.

FIG. 2 is a partially enlarged perspective view of a partially cut-away portion of FIG.

FIG. 3 is a view (side view) taken along line AA of FIG. 2;

FIG. 4 is a partially enlarged perspective view of a notch of a conventional slide adjuster for a seat.

FIG. 5 is a perspective view showing a skeleton of a seat bottom on which a conventional seat slide adjuster is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 11 Seat bottom 12 Seat back 2 Frame 3 Slide rail 31 Movable slide rail 32 Fixed slide rail 4 Front and rear movement locking means 41 Bracket (first bracket) 42 Horizontal axis (First horizontal axis) 43 Lock plate 44 Locking piece 45 coil spring 46 locking plate 5 second operating mechanism 51 second bracket 53 second arm 54 connecting shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. A first bracket is provided inside a movable slide rail provided on a bottom of a seat bottom of an automobile seat, and a first horizontal shaft is rotatably provided on the bracket. A lock plate is fixed to one horizontal axis, and a locking piece is provided at the tip of the lock plate, and the locking piece is pressed into a locking hole of a locking plate integrated with the floor by a biasing force of a biasing means. A seat slide adjuster that is set so as to be fitted and provided with a first arm at a front end of the first horizontal axis so as to be orthogonal to the axis, the inside of the movable slide rail, A second bracket is attached to the front of the first bracket, and a second horizontal shaft is rotatably provided on the second bracket so as to extend in the same direction as the first bracket. end An operating lever is provided on the portion, and a second arm is provided at a rear end of the second horizontal axis so as to be orthogonal to the axis. The first arm and the second arm cooperate with each other. The distance between the axis of the second horizontal shaft and the axis of the connection shaft is shorter than the distance between the axis of the first horizontal shaft and the axis of the connection shaft. Features a slide adjuster for seats.