JP2004009934A - Vehicle seat slide mechanism - Google Patents

Abstract

An object of the present invention is to improve the reliability of a seat slide and reduce costs.
A locking means provided on a lower channel is mounted on the lower channel so as to be able to rotate forward and backward, and locks a striker at the time of normal rotation and unlocks the striker at the time of reverse rotation. A lock plate 12, a return spring 13 for applying a reverse rotation force to the lock plate 12, a lock member 14 rotatably mounted on the lower channel 2 and stopping the lock plate 12 at the lock position, and a swinging motion on the upper channel 3. A lever 16 which is movably provided, engages with the lever engaging pin 14d of the lock member 14 when the upper channel 3 is at the rearmost position, and releases the stopped state of the lock plate 12 stopped at the locked position. , A wire having one end connected to the lever 16 and a flip-up lever having the other end connected to the wire Having.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a slide mechanism that enables a vehicle seat to be moved forward, and more specifically, enables a vehicle seat to be moved forward only in a state where a rear seat of the vehicle seat is slid to a rearmost position. The present invention relates to a sliding mechanism for a vehicle seat having a locking function.
[0002]
[Prior art]
As the above-described slide mechanism of the vehicle seat, a mechanism in which an upper channel is provided so as to slidably engage in a longitudinal direction with respect to a longitudinally long lower channel attached to a vehicle body, A vehicle seat is mounted on the upper channel.
[0003]
With regard to the rear seat having such a slide mechanism, in order to allow the seat to be tilted forward in a double fold, the seat back is tilted forward so as to overlap the seat cushion, and the folded seat is further folded with the front end of the lower channel. A configuration in which the rotation center is moved forward is known.
[0004]
By the way, as a mechanism for locking the lower channel that can be moved forward to the vehicle body, a striker is mounted on the vehicle body side, and a mechanism called a catcher is provided in the lower channel portion corresponding to the striker. The catcher includes a lock groove in which a lower channel is cut out for inserting a striker, a lock plate that rotates to lock the striker, and a lock member that rotates to stop the lock plate in a lock position, The striker is locked when the lock plate closes the lock groove, and unlocked when the lock groove is opened.
[0005]
For the rotation of the lock plate, a spring biasing force is used in one direction, and a pulling force is applied to the other direction via a flexible wire or the like. One end of the wire is connected to the catcher side, the other end is connected to a handle provided on the back side of the seat, and the wire is loosened between the lower channel and the upper channel to enable sliding between the two channels. ing. Therefore, a flexible wire or the like is used for rotating the lock plate.
[0006]
Further, the above-mentioned unlocking is possible only when the rear seat is slid to the rearmost position. The reason why unlocking is possible only at the rearmost position is to ensure that the folded rear seat is stored in the storage space between the floor seat and the floor seat, for example. Then, it is necessary to detect whether or not the upper channel has slid to the rearmost position, and a detecting means is provided.
[0007]
[Problems to be solved by the invention]
Therefore, in the case of the above-described conventional vehicle seat slide mechanism, since the flexible wire or the like is loosened between the lower channel and the upper channel, the wire or the like is caught by members around the seat and the seat slide. There is a possibility that the reliability of the device may be reduced. Further, there is a need for a sensing means for sensing whether or not the sheet has been slid to the rearmost position, and there has been a problem that the cost is increased.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve such a problem of the related art, and provides a slide mechanism of a vehicle seat that can improve reliability of a seat slide and reduce costs. The purpose is to do.
[0009]
[Means for Solving the Problems]
The vehicle seat slide mechanism of the present invention has a lower channel slidably attached to a vehicle body and an upper channel slidably engaged with the lower channel and to which a vehicle seat is mounted, and is provided on the vehicle body. A lock mechanism provided in the lower channel with respect to the striker is a slide mechanism for a vehicle seat that is in an unlockable state only when the upper channel is slid to the rearmost position, and the lock means is provided in the lower channel. A lock plate having a lock portion that is mounted to be rotatable in the normal and reverse directions and locks the striker during normal rotation and unlocks the striker during reverse rotation; a return spring that applies a reverse rotation force to the lock plate; Rotatably mounted in channel to lock plate in lock position The lock plate is pivotally provided on the upper channel, and is engaged with the lever engaging portion provided on the lock member when the upper channel is at the rearmost position, thereby stopping the lock plate stopped at the lock position. It is characterized by comprising a lever for releasing the state, and hand operating means provided on the vehicle seat for swinging the lever.
[0010]
In the sliding mechanism for a vehicle seat according to the present invention, the lock member provided on the lower channel side and the lever provided on the upper channel side are provided when the upper channel is at the rearmost position. It engages with the mating part and is separated at other slide positions. Therefore, even if the lever is swung by operating the manual operation means when the lever is not at the rearmost position, the lever does not engage with the lock member and swings in an idle swing state. Therefore, means for detecting that the upper channel is located at the rearmost position is unnecessary, and cost can be reduced.
[0011]
Also, when the manual operation means is operated when the upper channel is at the rearmost position, the lever is swung to rotate the lock member so that the striker is unlocked, that is, the lock member on the lower channel side and the upper member are rotated. The lever on the channel side is engaged and the manual operation means for swinging the lever is provided on the seat that slides with the upper channel, so there is no need to provide slack for securing the slide of the upper channel. Thus, the sheet is prevented from being caught on members around the seat and the like, and the reliability of the seat slide can be improved.
[0012]
In the vehicle seat slide mechanism of the present invention, a first shaft attached to the lower channel and rotatably supporting a lock member, and a second shaft attached to the upper channel and swingably supporting a lever. However, the upper channel may be arranged so as to approach when the upper channel is at the rearmost position.
[0013]
In this configuration, the first shaft that rotatably supports the lock member and the second shaft that rotatably supports the lever approach each other at the rearmost position. The force for swinging the lever can be efficiently transmitted to the rotation of the lock member.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described.
[0015]
FIGS. 1A to 1D are views (external perspective views) for explaining a rear seat storing operation of a vehicle to which the slide mechanism according to the present embodiment is applied, and FIG. 2 is applied to the rear seat. FIG. 3 is a front view showing a slide mechanism according to the present embodiment, and FIG. 3 is a left side view showing an upper portion of the slide mechanism. FIG. 4 is an external perspective view showing a lock means as a main part of the present invention, FIG. 5 is an exploded perspective view showing a lock means of the main part, and FIG. It is a schematic diagram which shows a part.
[0016]
As shown in FIG. 1A, the rear seat 90 is a seat for a plurality of people, and the slide mechanism 1 of the present embodiment is disposed below the left and right sides of a seat cushion 91. When the user operates a slide lever 92 provided at the lower front side, the user can slide forward and backward. When the seat back forward levers 94 provided on both rear sides of the seat back 93 are operated as shown in FIG. 1B, the corresponding seat back 93 is moved forward as shown in FIG. 1C. And overlaps with the seat cushion 91. Further, when the flip-up lever 95 provided at the rear center of the seat cushion 91 is pulled, as shown in FIG. 1D, the slide mechanism 1 is locked to the striker 96 fixed to the vehicle body side. Is unlocked, and the seat cushion 91 on which the seat back 93 is overlaid is further brought forward. In other words, it is possible to move forward in double fold.
[0017]
As shown in FIG. 2, the slide mechanism 1 includes a pair of lower channels 2 that are provided below the left and right sides of the rear seat 90 and are long in the front-rear direction of the vehicle body 9. And an upper channel 3 slidably engaging in the longitudinal direction. A large number of rollers 4 are provided between the two channels 2 and 3 in the longitudinal direction of the two channels (see FIG. 3), and the upper channel 3 is slidable with respect to the lower channel 2. A vehicle seat is mounted on the upper part of the upper channel 3.
[0018]
The vehicle body 9 is provided with a pair of left and right support members 9a separated from each other by an appropriate length in the width direction, and a support piece 5 is attached to a lower portion on the front side of each lower channel 2; Each of the supporting members 9a is rotatably supported by a shaft 9b. On the other hand, a stopper 8 which is in contact with the vehicle body 9 is attached to a lower rear portion of each lower channel 2, and a locking means 10 is provided at a lower rear portion of each lower channel 2. A striker 96 is attached to the part. The lock means 10 is configured to be locked when engaged with the striker 96 and to be unlocked when disengaged with the striker 96. Therefore, when the locking means 10 is unlocked, the vehicle seat attached to the upper part of the upper channel 3 can be moved forward together with the lower channel 2. Although the structure of the lock means 10 will be described later in detail, a part 10 a of the lock means 10 is attached to the upper channel 3 and moves following the slide of the upper channel 3.
[0019]
The lock means 10 includes a lock groove 11 provided in the lower channel 2 as shown in FIGS. 4 and 5, a lock plate 12 attached to the lower channel 2 so as to be capable of normal and reverse rotation, and A return spring 13 for applying a reverse rotation force (a force for rotating in the counterclockwise direction), for example, a return spring 13 composed of a coil spring, a lock member 14 attached to the lower channel 2, and a swinging member provided on the upper channel 3 via a bracket 15. And a manual operation means 17 for swinging the lever 16 in a predetermined direction.
[0020]
The hand operating means 17 has a wire 18 having one end fixed to the upper part of the lever 16 as shown in FIG. 4 and the other end of the wire 18 connected through the interior of the seat cushion 91 as shown in FIG. The flip-up lever 95 is provided as a manual operation unit, and the lever 95 is provided on the rear side of the seat cushion 91. Note that, instead of the wire 18, another force transmitting member such as a plurality of rods connected via a joint can be used.
[0021]
The lock groove 11 is formed in a U-shape whose lower side is opened so that the striker 96 can enter and exit, and a striker receiver 11a is provided in the inner back portion (see FIG. 7).
[0022]
The lock plate 12 is plate-shaped, and has a shaft hole 12 a formed at the center of rotation, and the shaft hole 12 a is rotatably mounted on a shaft 2 a provided in the lower channel 2. On the peripheral surface of the lock plate 12, a lock portion 12b, a lock portion 12c, a return portion 12d, and a spring lock portion 12e are formed.
[0023]
The lock portion 12b is formed of a groove that is depressed in a concave shape. The striker 96 that has entered the lock groove 11 is retained in the groove to prevent the striker 96 from slipping out and locked (see FIG. 7). When the lock portion 12b is in the locked state, the lock portion 12b is set to be located at a predetermined angular position where the lock portion 12b is locked with a locked portion 14b described later, that is, an angular position which is a lock position where rotation of the lock plate 12 is stopped. . The spring locking portion 12e is formed to protrude outward, and one end of the return spring 13 is locked to the spring locking portion 12e. The return spring 13 applies a rotational force in the counterclockwise direction A to the lock plate 12 so that the lock portion 12b of the lock plate 12 escapes from the lock groove 11 to unlock the striker 96 (see FIG. 10). ), The other end is locked by a locking pin 2b provided in the lower channel 2. When the spring locking portion 12 e rotates in the counterclockwise direction A, it comes into contact with a stopper 2 f provided on the lower channel 2. Here, the position of the lock plate 12 when the spring locking portion 12e contacts the stopper 2f is referred to as an unlock position.
[0024]
The lock member 14 is a plate-like member. The lock member 14 has a shaft hole 14a formed at the center of rotation, and the shaft hole 14a is rotatably supported on a shaft 2c attached to the lower channel 2. A locked portion 14b and a spring locking portion 14c that lock with the locking portion 12c when the plate 12 is at the lock position are provided, and a lever engaging pin 14d as a lever engaging portion is provided on the lower side surface. Is formed. The lever engagement pin 14d passes through the rotation angle regulating hole 2d formed in the lower channel 2 from the inside toward the outside. Therefore, the lock member 14 is rotatable in a fixed angle range according to the arc length of the rotation angle regulating hole 2d.
[0025]
One end of a second return spring 20 composed of, for example, a coil spring is locked to the spring locking portion 14c, and the second return spring 20 applies a rotational force in the clockwise direction B to the lock member 14 to lock the lock member 14. The other end of the second return spring 20 is locked by a locking pin 2e provided in the lower channel 2 so that the portion 14b functions to lock with the locking portion 12c of the lock plate 12.
[0026]
The lever 16 is an elongated member formed by processing a plate material. The lever 16 has a shaft hole 16a formed at the center of swing. The shaft hole 16a is swingably supported by a shaft 15a provided on a bracket 15 attached to the upper channel 3. ing. A wire mounting hole 16b and a spring locking hole 16c are formed on the upper portion of the lever 16, the other end of the wire 18 is mounted on the wire mounting hole 16b, and a tension urging spring 21 is mounted on the spring locking hole 16c. One end is attached. The other end of the tension urging spring 21 is locked by a spring locking portion 15 b provided on the bracket 15. The lower right side surface 16d of the lever 16 is formed so as to function as a pin moving portion that moves the lever engaging pin 14d counterclockwise (in the direction opposite to B) along the rotation angle regulating hole 2d. . A stopper 15c and a wire through hole 15d are formed in the bracket 15, and the stopper 15c is regulated as a swing limit when the upper portion of the lever 16 is pulled by the wire 18 and swings counterclockwise C. The wire passage hole 15d is for attaching a fixing member 22 for fixing an end of a guide tube 18a provided outside the wire 18. The lever 16 provided on the bracket 15 is a part 10a of the lock unit 10 that moves following the slide of the upper channel 3 described above.
[0027]
Next, the operation of the slide mechanism 1 configured as described above will be described with reference to FIGS.
[0028]
FIG. 8 shows the relationship between the lock plate 12, the lock member 14, and the lever 16 when the sheet is located forward of the rearmost position. FIG. 9 shows the lock plate 12, the lock when the sheet is located at the rearmost position. The relationship between the member 14 and the lever 16 is shown.
[0029]
As shown in FIGS. 8 and 9, the lock plate 12 keeps the rotation stopped at the lock position by the locking portion 12 c of the lock plate 12 and the locked portion 14 b of the lock member 14 being locked. . That is, the lock member 14 receives the rotational force in the clockwise direction B by the second return spring 20, and the lever engagement pin 14d abuts one end (the front end on the left side in the figure) of the rotation angle regulating hole 2d to rotate the lock member 14. Are stopped, and the locked portion 14b of the lock member 14 that has stopped rotating stops the rotation of the lock plate 12.
[0030]
The lock plate 12 and the lock member 14 that hold the rotation stopped state are both provided on the lower channel 2, but the lever 16 is provided on the slidable upper channel 3 side. Therefore, when the lower right side surface (pin moving portion) 16d of the lever 16 is positioned at the rearmost position, the lever engaging pin 14d abuts one end (the front end on the left side in the figure) of the rotation angle regulating hole 2d. If it is set so as to be in contact with or in the vicinity thereof, by positioning the sheet at the rearmost position, the lever 16 can be engaged with the lever engagement pin 14d as shown in FIG. As shown in FIG. 10, the lever engaging pin 14d can be moved in the counterclockwise direction C by swinging the lever 16 in the engaged state. Accordingly, the lock member 14 rotates counterclockwise (the direction opposite to B), and the lock plate 12 rotates counterclockwise A by the return spring 13 as shown by the broken line in FIG. Is released (unlocked state), and the spring locking portion 12e contacts the stopper 2f, so that the rotation of the lock plate 12 stops at the unlocked position. At this time, as shown in FIG. 11, the return portion 12d of the lock plate 12 appears in the lock groove 11 so as to make the groove bottom of the lock groove 11 shallow. Thus, when the vehicle seat is returned to the original state by the backward movement, the return portion 12d is pushed upward by the striker 96 and resists the rotational force in the counterclockwise direction A by the return spring 13, and the lock plate 12 is turned clockwise. The locker 12 is rotated in the forward direction (the direction opposite to the direction A) so that the striker 96 does not come out of the lock portion 12b, that is, the lock plate 12 is returned to the lock position, and the lock portion 12c is returned to a position where it engages with the locked portion 14b. Then, the lock plate 12 is stopped at the lock position.
[0031]
Therefore, according to the present embodiment, the lock member 14 provided on the lower channel 2 side and the lever 16 provided on the upper channel 3 side are connected to the lock member 14 when the upper channel 3 is at the rearmost position. And is disconnected at other slide positions. Therefore, even when the lever 16 for pulling up is pulled and the lever 16 is swung clockwise C via the wire 18 when the lever 16 is not at the rear end position, the lever 16 does not engage with the lever engagement pin 14d and is idled. Will swing. Therefore, means for detecting that the upper channel 3 is located at the rearmost position becomes unnecessary, and the cost can be reduced. When the flip-up lever 95 is pulled while the upper channel 3 is at the rearmost position, the lever 16 swings clockwise C so that the striker 96 is unlocked, and the rotation angle of the lock member 14 is changed. Is changed, that is, the lock member 14 on the lower channel 2 side is engaged with the lever 16 on the upper channel 3 side, and the manual operation means 17 (the wire 18 and the lever 95) for swinging the lever 16 is Since one end of the wire 18 provided on the upper channel 3 side is connected to the same lever 16 on the upper channel 3 side, in other words, the upper channel 3 and the lower channel are provided. 2 to secure the slide of the upper channel 3 Since 18 is not necessary to wire in a state in which slack, caught in the members such as the surrounding sheet is prevented, it can improve the reliability of the seat slide.
[0032]
Further, in the present embodiment, as shown in FIG. 9, a shaft 2c attached to the lower channel 2 to rotatably support the lock member 14, and a shaft attached to the upper channel 3 to swingably support the lever 16. 15a are arranged so as to approach when the upper channel 3 is at the rearmost position, so that the force for pulling the flip-up lever 95 and swinging the lever 16 is efficiently transmitted to the rotation of the lock member 14. It is possible to do. Here, the approach of the shaft 2c and the shaft 15a is best in making the both shafts 2c and 15a coincide with each other in order to reduce the pulling force of the flip-up lever 95. The pulling force of the flip-up lever 95 required for the rotation of the lever does not become too large, and is in a close proximity as far as a convenient lever pulling force can be ensured, for example, the degree that the shaft 2c and the shaft 15a overlap as in the present embodiment. May be in a state of being close to each other.
[0033]
In the above-described embodiment, the invention is applied to a rear seat for a plurality of people, but the invention is not limited to this, and may be applied to each of the rear seats for a single person. In addition, the present invention can be applied to all types in which the seat cushion is moved forward together with the lower channel.
[0034]
【The invention's effect】
As described above in detail, according to the present invention, when the lock member provided on the lower channel side and the lever provided on the upper channel side are connected to the lever member of the lock member when the upper channel is at the rearmost position. It engages with the mating part and is separated at other slide positions. Therefore, even if the lever is swung by operating the manual operation means when the lever is not at the rearmost position, the lever does not engage with the lock member and swings in an idle swing state. Therefore, means for detecting that the upper channel is located at the rearmost position is unnecessary, and cost can be reduced. When the manual operation means is operated when the upper channel is at the rearmost position, the lever is swung to rotate the lock member so as to unlock the striker, that is, the lock member on the lower channel side and the upper member are rotated. The lever on the channel side is engaged and the manual operation means for swinging the lever is provided on the seat that slides with the upper channel, so there is no need to provide slack for securing the slide of the upper channel. Thus, the sheet is prevented from being caught on members around the seat and the like, and the reliability of the seat slide can be improved.
[Brief description of the drawings]
FIGS. 1A to 1D are views (external perspective views) for explaining a storage operation of a rear seat of a vehicle to which a slide mechanism according to an embodiment of the present invention is applied.
FIG. 2 is a front view showing a slide mechanism according to the embodiment applied to the rear seat of FIG. 1;
FIG. 3 is a left side view showing an upper portion of the slide mechanism of FIG. 2;
FIG. 4 is an external perspective view showing a locking means as a main part of the present invention shown in FIG. 2;
FIG. 5 is an exploded perspective view showing a locking means of a main part of the present invention shown in FIG. 2;
FIG. 6 is a schematic view showing a part of a manual operation unit constituting the lock unit of FIG. 5;
FIG. 7 is a front view showing a mounting state of a lock plate, a lock member, and a lever which constitute a lock unit which is a main part of the present invention.
FIG. 8 is a front view illustrating a relationship between a lock plate, a lock member, and a lever when the seat is positioned forward of a rearmost position.
FIG. 9 is a front view showing a relationship among a lock plate, a lock member, and a lever when the seat is located at a rearmost position.
FIG. 10 is a front view showing another relationship between the lock plate, the lock member, and the lever when the seat is located at the rearmost position.
FIG. 11 is a front view showing a relationship between a lock plate and a lock groove when returning a sheet brought forward;
[Explanation of symbols]
1 slide mechanism 2 lower channel 2c axis (first axis)
3 upper channel 9 body 10 locking means 11 locking groove 12 locking plate 12b locking portion 13 return spring 14 locking member 14d lever engaging pin (lever engaging portion)
15 Bracket 15a axis (second axis)
Reference Signs List 16 lever 17 hand operation means 18 wire 20 second return spring 90 rear seat 95 flip-up lever (hand operation part)
96 striker

Claims (2)

A lower channel attached to the vehicle body so as to be able to be moved forward, and an upper channel slidably engaged with the lower channel and to which a vehicle seat is attached, and a lock means provided in the lower channel with respect to a striker provided in the vehicle body. A sliding mechanism for a vehicle seat that is unlocked only when the upper channel is slid to a rearmost position,
The locking means,
A lock plate that is attached to the lower channel so as to be capable of normal and reverse rotation, locks the striker at the time of normal rotation, and has a lock portion that unlocks the striker at the time of reverse rotation,
A return spring for applying a reverse rotation force to the lock plate,
A lock member rotatably mounted on the lower channel and stopping the lock plate at the lock position;
A lever that is swingably provided on the upper channel and engages with a lever engaging portion provided on the lock member when the upper channel is at the rearmost position to release the stop state of the lock plate stopped at the lock position. When,
A sliding mechanism for a vehicle seat, comprising: a manual operation means provided on the vehicle seat for swinging the lever. A first shaft attached to the lower channel and rotatably supporting a lock member, and a second shaft attached to the upper channel and swingably supporting a lever, when the upper channel is at the rearmost position. The slide mechanism for a vehicle seat according to claim 1, wherein the slide mechanism is arranged so as to approach.

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