JPH0549466U - Slide adjuster for seat - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the urging force of the urging means is increased, the operability of the operating lever is not deteriorated. A second bracket 51 is attached inside the movable slide rail 31 and in front of the first bracket 41. The second horizontal shaft 5 is rotatably attached to the bracket 51.
2 is provided, an operation lever 47 is provided at the front end of the second horizontal shaft 52 so as to be substantially orthogonal to the shaft, and the shaft 52 is provided at the rear end of the second horizontal shaft 52.
A second arm 53 is provided so as to be orthogonal to the second arm 53, and the first arm 48 and the second arm 53 are connected by a connecting shaft 54 so as to cooperate with each other. The distance S2 from the axis of the connecting shaft 54 is shorter than the distance S1 between the axis of the first horizontal shaft 42 and the axis of the connecting shaft 54.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement on a slide adjuster for a vehicle seat.

[0002]

[Prior Art]

 As shown in FIG. 5, a vehicle seat 1 is composed of a seat bottom 11 for seating and a seat back 12 on a backrest. The seat bottom 11 has a pair of side frames 2 as a skeleton, and the bottom has a pair of slide rails 3 in the vehicle width direction. The slide rail 3 is composed of 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. Since the movable slide rail 31 is slidably fitted to the fixed slide rail 32 fixed to the floor F, by sliding the movable slide rail 31 on the fixed slide rail 32, the seat bottom is slid. 1 can be moved back and forth. That is, the seat bottom 11 is configured so that the front and rear positions can be arbitrarily set according to the physical structure of the seated person.

Further, in order to hold 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 inner side of the movable slide rail 12, a horizontal shaft 42 rotatably mounted on the bracket, and a fixed shaft fixed to the horizontal shaft 42. The lock plate 43 provided, the locking piece 44 provided at the tip of the lock plate 43, the coil spring 45 for applying a biasing force to the lock plate 43 to rotate the lock plate 43 in the clockwise direction, and the locking piece 44. The locking plate 46 integrated with the floor F having the locking hole 46a into which is fitted, and the operation lever 47 provided at the front end of the horizontal shaft 42 so as to be substantially orthogonal to the horizontal shaft 42. Was composed of.

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

Therefore, when the seated person on the seat bottom 11 rotates the operation lever 47 counterclockwise as shown by the chain double-dashed line, the lock plate 43 also resists the biasing force of the coil spring 45 and rotates around the horizontal axis 42. Since it rotates in the counterclockwise direction, the locking piece 44 at the tip of the lock plate 43 comes out of the locking hole 46a of the locking plate 46. The seated person can freely move the seat bottom 11 back and forth as desired. The position can be set.

After setting the position of the seat bottom 11 and releasing the hand from the operating lever 47, the lock plate 43 is rotated clockwise by the urging force of the coil spring 45, and the locking piece 44 is again locked by the locking plate. Since it is fitted in the locking hole 46a of the seat 46, the seat bottom 11 is locked so as not to move at a new position.

[0007]

[Problems to be solved by the device]

 By the way, when a sudden braking is applied during the driving operation of the automobile, a large force is applied to the seat bottom 11 in the traveling direction, so that the seat bottom 11 may be unlocked by the front-back motion locking means 4. In order to prevent this, the biasing force of the coil spring 45 pressing the lock plate 43 may be increased, but if this is done, 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 problems of the related art, and provides the forward-backward movement locking means 4 which does not deteriorate the operability of the operating lever 47 even if the biasing force of the coil panel 45 is increased. The purpose is to provide a slide adjuster for seats equipped with this.

[0009]

[Means for Solving the Problems]

 In the seat slide adjuster according to claim 1 of the present invention, the first bracket is attached to the inner side of the movable slide rail provided at the bottom of the seat bottom of the automobile seat, and the bracket is rotatably attached. A first horizontal shaft is provided, a lock plate is fixedly mounted on the first horizontal shaft, and a locking piece is provided at the tip of the lock plate. The locking piece engages with a locking plate integrated with the floor. For a seat that is set so as to be fitted into the stop hole by the urging force of the urging means, and the first arm is provided at the front end of the first horizontal shaft so as to directly intersect with this shaft. In the slide adjuster, a second bracket is attached to the inside of the movable slide rail in front of the first bracket, and a second horizontal shaft is rotatably attached to the second bracket on the second bracket. Same side The second horizontal shaft is provided with an operating lever at the front end thereof, and the second horizontal shaft is provided with a second arm at the rear end thereof so as to be orthogonal to this shaft. 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 shaft and the axis of the connecting shaft is the same as that of the first horizontal shaft. It is characterized in that it is shorter than the distance from the axis of the connecting shaft.

[0010]

[Action]

 According to the seat slide adjuster of claim 1, the distance between the axis of the second horizontal shaft and the axis of the connecting shaft is between the axis of the first horizontal shaft and the shaft of the connecting shaft. Since it is shorter than the distance, the biasing force of the coil spring is transmitted to the operating lever in a weakened state according to the ratio of the distance, so even if the biasing force of the coil spring is made stronger than before, it will become stronger. The force required to rotate the operating lever does not increase proportionally, but it can be decreased conversely by setting the above distance ratio appropriately. It is possible to avoid the deterioration of the operability of the lever.

[0011]

【Example】

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

As shown in this figure, a vehicle seat 1 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 composed of a movable slide rail 31 and a fixed slide rail 32 below the movable slide rail 31 at the bottom thereof. Since the movable slide rail 31 is slidably fitted to the fixed slide rail 32 fixed to the floor F, by sliding the movable slide rail 31 on the fixed slide rail 32, The seat bottom 1 can be moved back and forth.

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

The locking piece 44 is set so as to be fitted into any one of a plurality of locking holes 46a provided in the longitudinal direction of the locking plate 46 integrated with the floor F by the biasing force of the biasing means. There is. A coil spring 45 fitted on the first horizontal shaft 42 is used as the urging means. Since one end of the coil spring 45 is abutted against the side portion of the movable slide rail 31, and the other end is locked while being biased against the edge of the lock plate 43, this biasing force causes the lock plate 43 to move to the first position. It is in a state of being rotated clockwise about one horizontal axis 42 and 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 actuating mechanism 5 is provided inside the movable slide rail 31 and in front of the first bracket 43. That is, a second bracket 51 is attached to the side of the movable slide rail 31 in front of the first arm 48, and a second horizontal shaft 52 is rotatably provided on the bracket 51.

An operating lever 47 is provided at the front end of the second horizontal shaft 52 so as to be substantially orthogonal to the shaft, and the rear end of the second horizontal shaft 52 is provided with the operation lever 47. A second arm 53 is provided so as to be orthogonal to each other, and the first arm 48 and the second arm 53 are connected by a connecting shaft 54 so as to move together. 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 48a 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 equal to the axis of the first horizontal shaft 42 and the axis of the connecting shaft 54. Is shorter than the distance S1 from Therefore, 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 around the first horizontal shaft 42 cooperating therewith. large.

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

Then, the second arm 53 fixed to the rear end portion of the second horizontal shaft 52 also rotates counterclockwise around the second horizontal shaft 52, so that the second arm 53 and the connecting shaft 54 are interposed. The first arm 48 connected with the coil spring 45 also rotates counterclockwise around the first horizontal shaft 42 against the urging force of the coil spring 45, and the lock plate 43 provided integrally with the first arm 48 also moves in the same direction. Since the locking piece 44 at the tip of the movable slide rail 31 is rotated to release the engagement with the locking hole 46a of the locking plate 46, the movable slide rail 31 is slidable on the fixed slide rail 32.

In this case, since the distance S2 of the second arm 53 is set smaller than the distance S1 of the first arm 48, a force smaller than the original biasing force of the coil spring 45 based on the principle of leverage. Since the first horizontal shaft 42 can be rotated by, the biasing force of the coil spring 45 is increased, and the pressing force of the locking piece 44 against the locking plate 46 is increased, so that the locking hole 46a is stronger. Even when fitted, the operation lever 47 for releasing it can be operated with a small force as in the conventional case.

With the above state maintained (that is, with the operation lever 47 pulled up), the seat bottom 11 is moved back and forth to adjust the position, and the operation lever 47 is released. For example, the lock plate 43 rotates clockwise around the first horizontal shaft 42 by the action opposite to the above, and the locking piece 44 is fitted into the locking hole 46a of the locking plate 46 that has reached that position. Therefore, the back and forth movement of the movable slide rail 31 is locked, and the sheet bottom 11 does not move.

[0023]

[Effect of the device]

 As described above, in the seat slide adjuster of the present invention, a new actuating mechanism is added to the conventional forward-backward locking means, and the second actuating mechanism is the front part that is the center of rotation of the conventional lock plate. A second horizontal shaft is provided in front of a horizontal shaft (first horizontal shaft) provided with an arm (first arm), and the front end of the second horizontal shaft is almost parallel to the shaft. An operation lever is provided so as to be orthogonal to each other, and a second arm is provided at a rear end portion of the second horizontal shaft so as to be orthogonal to the shaft, and the first arm and the second arm are separated from each other. The axes of the second horizontal shaft and the axis of the connecting shaft are connected by a connecting shaft so as to move together, and the distance between the axis of the first horizontal shaft and the axis of the connecting shaft is Since it is configured to be shorter, the biasing force of the coil Even if it is stronger, the force required to rotate the operation lever does not increase in proportion to the increased force, but it decreases conversely by setting the above distance ratio appropriately. As a result, it is possible to avoid deterioration of the operability of the operating lever due to the strengthening of the coil spring.

Therefore, the biasing force of the coil spring can be increased, and the fitting force of the lock plate locking piece with respect to the locking hole can be increased as compared with the related art to reliably lock the forward and backward movement of the seat bottom at a predetermined position. As for the operation lever, it can be operated lightly in the same state as the conventional one or in a state improved from the conventional one.

[Brief description of drawings]

FIG. 1 is a perspective view showing a skeleton of a seat bottom equipped with a slide adjuster for a seat of the present invention.

FIG. 2 is a partially enlarged perspective view of a partial cutout in FIG.

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

FIG. 4 is a partially enlarged perspective view of a partial cutout of a conventional seat slide adjuster.

FIG. 5 is a perspective view showing a skeleton of a seat bottom equipped with a conventional seat slide adjuster.

[Explanation of symbols]

 1 Seat 11 Seat Bottom 12 Seat Back 2 Frame 3 Slide Rail 31 Movable Slide Rail 32 Fixed Slide Rail 4 Back-and-Forth 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 actuation mechanism 51 second bracket 53 second arm 54 connecting shaft

Claims (1)

[Scope of utility model registration request] 1. A first bracket is attached to an inner portion of a movable slide rail provided at a bottom portion of a seat bottom of a vehicle seat, and a first horizontal shaft is rotatably provided on the bracket. A lock plate is fixedly mounted on one horizontal shaft, and a locking piece is provided at the tip of the lock plate. The locking piece is inserted into a locking hole of a locking plate integrated with the floor by a biasing force of a biasing means. A slide adjuster for a seat, which is set so as to be fitted and has a first arm provided at a front end of the first horizontal shaft so as to be orthogonal to the first horizontal shaft, in an inner part 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 in the section, and a second arm is provided at a rear end portion of the second horizontal shaft so as to be orthogonal to the axis, and the first arm and the second arm work together. The distance between the axis of the second horizontal shaft and the axis of the connecting shaft is shorter than the distance between the axis of the first horizontal shaft and the axis of the connecting shaft. A special slide adjuster for seats.