JPH042092Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a locking device for a seat track attached to a vehicle seat.

Conventional technology This type of locking device was developed in 1984.
There is one disclosed in Publication No. 35943.

This is because the locking mechanism for fixing the seat has first and second locking mechanisms arranged parallel to each other on both sides of the seat.
The lock mechanism of the first seat track is equipped with an operating lever for locking and unlocking, and the locking mechanism of the second seat track is connected to a wire that interlocks with the operating lever. It's been a long time since I've been in the middle of a long time.

Therefore, in order to move the seat along the longitudinal direction of the vehicle, the locking mechanism of the first seat track is unlocked by turning the operating lever.
Further, in conjunction with this, the wire is interlocked to unlock the second seat track locking mechanism.

This allows the seat to move back and forth along the first and second seat tracks. and. If the operating lever is released when the seat has stopped at a suitable position, the locking mechanism will be locked again and the seat will be fixed at that position.

Problems to be Solved by the Invention However, in the above-mentioned conventional locking mechanism, the wire must be stretched at a certain length between each member of both locking mechanisms, and both ends must be fixed, making assembly operations cumbersome.

Furthermore, although the first and second seat tracks should be installed parallel to each other, they may be slightly deviated due to assembly errors or the like. However, since the length of the wire is constant as mentioned above, when the seat tracks are no longer parallel, the locking mechanism on the first seat track side is in the locked state while the other one is in the unlocked state. In a narrow place, the first seat track is unlocked, but the other track remains locked, causing the problem that the seat cannot move.

Furthermore, even if the seat tracks are parallel, if the length of the wire is short, the first seat track will be in a locked state, but the second seat track will be in an unlocked or half-locked state. Conversely, if the wire is too long, even if the first seat track side is unlocked, the second seat track side remains locked or half-locked.

Means for Solving the Problems In order to solve the above problems, the present invention provides that locking mechanisms for fixing the seat are installed in the first and second seat tracks, which are arranged parallel to each other on both sides of the seat. The locking mechanism of the first seat track is provided with an operating lever for locking and unlocking, and the locking mechanism of the second seat track is connected to an interlocking wire that interlocks with the operating lever. In the truck locking device, a cam is fixed to a rotating shaft of the operating lever extending along the first seat track, and a cylinder holding a lock plate of the locking mechanism is pivotally mounted. A wire support member having a hole through which the interlocking wire is passed is fixed to the cylinder, and the wire support member is slid in the direction of closing the hole by being pushed by the cam when the operation lever is operated to unlock the wire. A structure is adopted in which a sliding piece is connected to the cam, which is locked to the cam and becomes unable to slide relative to the wire support member when the cam moves and hits the interlocking wire.

Operation When the control lever is operated, a pivot shaft of the control lever extending along the first seat track is rotated.

During an unlocking operation, a cam fixed to the pivot shaft rotates toward the wire support member and pushes a sliding piece connected to the wire support member. The slide piece thereby slides relative to the wire support member and abuts the interlock wire, securing the interlock wire relative to the hole.

Therefore, the interlocking wire is fixed to the locking mechanism on the first seat track side and is connected to the locking mechanism on the second seat track side at a constant length. Note that the interlocking wire is connected and fixed in advance to the locking mechanism on the second seat track side.

In the above state, the sliding piece hits the interlocking wire and is locked to the cam, so when the cam further rotates with the rotation of the rotation shaft, the cam moves the wire support member into the cylinder via the sliding piece. It will be rotated along with the body around the rotation axis.

Therefore, the lock plate held by the cylinder escapes from the lock position and unlocks the lock mechanism, and since the interlocking wire is also pulled, the lock mechanism on the second seat track side is also unlocked.

Thereafter, the seat is moved along the seat track and stopped and locked in place. Locking is achieved by operating the operating lever in the opposite direction.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 6.

In these figures, reference numerals 1 and 2 designate first and second seat tracks, respectively, which are arranged parallel to each other on either side of a vehicle seat (not shown). Each seat track 1, 2 comprises an upper rail 3 and a lower rail 4, the above-mentioned seat is placed on and fixed to the upper rail 3, and the lower rail 4 is fixed to the floor (not shown) of the vehicle.

A roller 8 is provided between the upper rail 3 and the lower rail 4 to smooth the sliding movement between them, and also to fix the upper rail 3 to the lower rail 4 and fix the seat in a fixed position. A locking mechanism is provided.

The lock mechanism includes a lock plate 5 attached to the upper rail 3 side and a locking piece 6 attached to the lower rail 4 side. The lock plate 5 is provided with a hole 7 that engages with one of the locking pieces 6, and is pivotally connected to an operating lever to be described later.
A large number of locking pieces 6 are provided in a sawtooth shape, and the lower rail 4
is fixed along.

Therefore, when the lock plate 5 engages with any of the locking pieces 6, the upper rail 3 is fixed to the lower rail 4 at that position, and when the engagement is released, the upper rail 3 can freely move along the lower rail 4. become.

Of the locking mechanisms, the one on the side of the first seat track 1 is provided with an operating lever 9 for locking and unlocking the locking mechanism.

The operating lever 9 is provided with a pivot shaft 10 extending along the first seat track 1.
is held by a bracket 11 fixed to the upper rail 3.

Although the locking mechanism of the second seat track 2 does not have an operating lever 9, it is provided with a rotating shaft 10, which is held on the upper rail by a bracket 11 in the same manner as described above. A lock plate 5 is fixed to the rotation shaft 10.

A torsion spring 12 is attached to each of the rotation shafts 10, and biases the upper rail 3 in the directions of arrows A and B, respectively.

Therefore, the lock plate 5 is always engaged with the locking piece 6.

A cam 13 is fixed to the rotating shaft 10 on the side of the first seat track 1, and the cam 13 projects substantially horizontally when the seat is locked as shown in FIGS. It is pivoted. The cylinder 14 holds the lock plate 5 and also holds a wire support member 16 that supports the interlocking wire 15.

The wire support member 16 is formed so as to stand almost vertically upward from the position where it contacts the lower part of the cam 13 when the cam 13 is in the above position, and a stopper 17 of a sliding piece to be described later is provided at the upper part of the wire support member 16. A sliding piece guide 18 is provided in the middle, and a hole 19 through which the interlocking wire 15 is inserted is provided near the stopper 17.

A sliding piece 20 is connected to the wire support member 16. The sliding piece 20 is a rectangular piece held by the guide 18 of the wire support member 16, with its upper end facing the stopper 17 and its lower end facing the lower part of the cam 13.

Thereby, the wire support member 16 and the sliding piece 20 can rotate around the rotation axis 10 together with the cylinder 14, and the sliding piece 20 can rotate around the rotation shaft 10.
6 can be slid up and down.

However, a torsion spring 21 is attached to the cylindrical body 14 as shown in the first figure, and the cylindrical body 14 is always urged in the direction of arrow C with respect to the upper rail 3.

Therefore, the wire support member 16 and the sliding piece 2
0 stands substantially vertically in the locked state as shown in FIGS. 1 and 2. Further, the sliding piece 20 is lowered by its own weight, and its lower end is in contact with the lower part of the cam 13.

The interlocking wire 15 is stretched between both locking mechanisms as in the prior art, but unlike the prior art, it is not fixed on the first seat track 1 side.

That is, as shown in FIGS. 3 and 4, the hole 19 of the wire support member 16 is
5, and the interlocking wire 15 is simply passed through the hole 19.

However, on the second seat track 2 side, the end of the interlocking wire 15 is fixed to the lock mechanism as in the conventional case.

That is, as shown in FIGS. 1 and 2, a lever 22 is fixed to the rotation shaft 10,
The other end of the interlocking wire 15 is tied to the tip of the lever 22.

In addition, as shown in FIG. 4, the stopper 17
, the upper end of the sliding piece 20 and the interlocking wire 15
The surface of the interlocking wire 15 is roughened to prevent the interlocking wire 15 from slipping when the interlocking wire 15 is pulled between the sliding piece 20 and the stopper 17 as described later.

Next, the operation of the above locking device will be described.

To change from the locked state (FIGS. 1 and 2) to the unlocked state (FIG. 6), the operating lever 9 is rotated in the direction opposite to the direction of arrow A.

As a result, the rotating shaft 10 rotates in the direction of arrow D together with the cam 13 (FIG. 3), and the cam 13 eventually pushes up the sliding piece 20 toward the interlocking wire 15 (FIG. 5). Therefore, the interlocking wire 15 is connected to the sliding piece 2
0 and the lower end of the stopper 17 or the edge of the hole 19.

Then, when the cam 13 rotates further, the cam 1
3 rotates the wire support member 16 in the same direction via the sliding piece 20 (FIG. 6). Since the wire support member 16 is integrated with the lock plate 5 via the cylindrical body 14, the lock plate 5 is released from the locking piece 6.

Further, as the wire support member 16 rotates, the interlocking wire 15 is pulled in the direction of arrow E, and the lock plate 5 on the second seat track 2 side is removed from the locking piece 6.

The locking device is thus unlocked and the seat (not shown) can be moved along the seat tracks 1, 2. When the operating lever 9 is released when the seat is at the position desired by the occupant, the rotating shaft 10 is rotated back to its original position by the return action of the torsion spring 12, and at the same time, the cylinder 14 is also moved to the cam 13.
It is no longer subjected to the pressing action of the torsion spring 21 and rotates back to its original position due to the restoring action of the torsion spring 21. Then, the lock plate 5 engages with the locking piece 6 at that position.

Furthermore, since the sliding piece 20 is also released from the pressing action of the cam 13, it descends under its own weight, and the interlocking wire 15 is therefore released from its restraint.

When the interlocking wire 15 is released from the wire support member 16, it is pulled by the lever 22 by the restoring action of the torsion spring 12 on the second seat track 2 side, slides inside the hole 19, and moves to the second seat. Move a little to the track 2 side. Lever 22
When the lock plate 5 is rotated by the torsion spring 12, the integrated lock plate 5 also rotates in the same direction via the rotation shaft 10, and engages with the locking piece 6 at the corresponding position.

In this way, the seat will be fixed in that position.

Effects of the invention Since the invention has the above-mentioned configuration, the length of the interlocking wire to be spanned between the lock mechanisms on both sides can be automatically changed in accordance with changes in the distance between the first and second seat tracks. can be done.

Therefore, even if the seat track has lost its parallelism to some extent due to an error during assembly, when locking or unlocking the first seat track, lock or unlock the second seat track at any point. Unlocking can also be done reliably. Furthermore, even when both seat tracks are parallel and the space between them is too wide or too narrow, locking or unlocking can be similarly performed reliably.

Furthermore, the first seat track side of the interlocking wire does not need to be fixed to the locking mechanism and can simply be inserted into the hole, making assembly simple and quick.

[Brief explanation of drawings]

The figures show an embodiment of the locking device of the present invention, FIG. 1 is a perspective view of the entire locking state, FIG. 2 is a sectional view taken along the line - - in FIG. A sectional view, Figure 4 is an enlarged view of the part shown in Figure 3,
FIG. 5 is a sectional view similar to FIG. 3 during the transition from the locked to unlocked state, and FIG. 6 is a sectional view similar to FIG. 3 in the unlocked state. DESCRIPTION OF SYMBOLS 1... First seat track, 2... Second seat track, 5... Lock plate, 6... Locking piece, 9... Operating lever, 10... Rotating shaft, 13
...Cam, 14...Cylinder, 15...Interlocking wire,
16... Wire support member, 19... Hole, 20...
Sliding piece.

Claims (1)

[Scope of utility model registration request] Locking mechanisms for fixing the seat are installed in first and second seat tracks arranged parallel to each other on both sides of the seat, and the locking mechanism of the first seat track has a locking mechanism for locking and unlocking. In the seat track locking device, an operating lever is attached, and an interlocking wire that interlocks with the operating lever is connected to the locking mechanism of the second seat track, the operating lever extending along the first seat track. A cam is fixed to the rotating shaft, and a cylindrical body for holding the lock plate of the locking mechanism is pivotally mounted, and a wire support member having a hole through which the interlocking wire is passed is fixed to the cylindrical body. The wire supporting member is slid in a direction in which the hole is closed by being pushed by the cam when the operating lever is operated to unlock, and when it hits the interlocking wire, the wire is locked to the cam and the wire is held in place. A locking device for a seat track as described above, characterized in that a sliding piece is connected to the support member so that it cannot slide.