JPH059228Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention consists of slidingly fitting an upper rail with an inverted T-shaped cross section to a lower rail with a groove-shaped cross section opening upward, and sliding both rails at a desired position. The present invention relates to a seat slide device equipped with a locking mechanism that prevents the seat from being restrained.

``Conventional technology'' In order to make it easier for rear seat occupants to get on and off, two-door vehicles have a so-called walk-in function that automatically moves the front seat forward when the backrest of the front seat is folded forward. Hold it on the slide device, and further,
Some cars have a memory function that starts restraint at a predetermined position when the backrest is raised and the front seat is moved back.

A conventional example of such a seat slide device is shown in the fifth example.
This will be explained with reference to FIGS.

The seat slide device 1 supports the front seat, and has a lower rail 2 fixed to the vehicle body.
and an upper rail 3 supporting the seat are slidably combined to form a rail unit, and two rail units are arranged in parallel under the seat, each of which is provided with a locking mechanism 5.

The lower rail 2 has an upward groove-shaped cross section, and the upper rail 3 has a downward groove-shaped cross section that holds the lower rail 2 from the outside.

The lock mechanism 5 includes an operating shaft 5a pivotally supported on a base plate 6 fixed to the upper rail 3, a locking hole 2b of a locking plate 2a fixed to the operating shaft 5a and fixed to the lower rail 2; A latch member 5b that engages and disengages from the latch member 5b, a memory operation lever 5c that is pivotally supported by the operating shaft 5a and engages the latch member 5b so as to be able to push it in the release direction, and a memory operation lever 5c that releases the memory operation lever 5c. A release portion 2 formed at the top edge of the one-way locking plate 2a that is restrained in position.
Memory plate 5d that releases the restraint when engaged with c.
and one end is connected to the backrest of a seat (not shown) via a cable 5e so as to be interlocked with the forward folding of the seatback.
It includes an interlocking lever 5f whose other end is connected to an arm protruding from the memory operating lever 5c.

The operating shaft 5a has an interlocking plate 7 fixed to its end, and is connected to another parallel rail unit (not shown) via interlocking cables 6a, 6b, and the other rail unit is also provided with an operating lever (not shown). It is being

When the backrest of the seat is raised, the latch member 5b is engaged with the locking hole 2b of the locking plate 2a, and the seat cannot be moved. 6
The operating shaft 5a is rotated through the levers a and 6b, and the latch member 5b is disengaged from the locking hole 2b of the locking plate 2a, allowing the lower rail 2 and the upper rail 3 to move relative to each other to adjust the seat position. enable.

When the backrest of the seat is folded down, the interlocking lever 5f is pulled by the cable 5e, which rotates the memory operating lever 5c. When the memory operating lever 5c displaces the latch member 5b to the release position, the latch member The memory plate 5d engages with the memory operating lever 5c to prevent the seventh lever 5b from returning.
The state shown in the figure will be reached.

Since the latch member 5b remains in the released state, the seat is released and the released seat moves to the front end of its operating stroke to perform a walk-in action.

The memory plate 5d is the memory operating lever 5c.
Since the seat remains open even when the backrest is raised, the seat at the front end of the forward/backward movement stroke can be moved rearward.

Move backward to release part 2c of locking plate 2a
When the memory plate 5d rides on the memory plate 5d, the memory plate 5d is disengaged from the memory operating lever 5c, the latch member 5b is released, and at that position it engages with the locking hole 2b of the corresponding locking plate 2a. This is a memory operation in which the seat is held in a predetermined position after the walk-in operation.

``Problem that the invention aims to solve'' Seatbelts were generally fixed to the floor or the side walls of the car body for strength reasons, but in that case, when the seat was moved back and forth for adjustment, the seatbelt The way seatbelts are fastened has changed, making them less convenient to use, so more and more seatbelts are fastened to the seat or rail unit.

For the type that is fixed to the seat or rail unit, it is necessary to significantly increase the strength of the fit between the vehicle body side rail and the seat side rail of the rail unit. Instead of a combination of the upper rail 3 and the upper rail 3, there is one in which an upper rail with an inverted T-shaped cross section is slidably fitted into a lower rail with a groove-shaped cross section opening upward to increase the strength and prevent the two rails from separating.

If the technology of the walk-in mechanism in the conventional seat slide device, which has a rail unit that is a combination of the lower rail 2 and upper rail 3 with a grooved cross section, is applied as is, additional members will be required and the structure will be complicated. There were problems such as increased cost and weight.

The present invention has been developed by focusing on these conventional problems, and aims to provide a seat slide device having a walk-in function or a memory function that is suitable for the recent rail structure with peel strength. The purpose is

``Means for Solving the Problems'' The gist of the present invention to achieve this purpose is to slidably fit an upper rail with an inverted T-shaped cross section into a lower rail with a groove-shaped cross section that opens upward, and In a seat slide device equipped with a locking mechanism for non-slidingly restraining a rail at a desired position, the lower rail has side walls rising from both sides of a bottom wall and horizontal flanges extending inward from the upper end of each side wall. , The upper rail has a T-shaped head that fits downward into the groove of the lower rail, and a vertical wall portion rising upward from the head, and is attached to the upper rail and connected to the lower rail. a latch member that is engaged with and disengaged from the latching portion and operated by the operation rail; and a latch member that is pivotably pivoted about a vertical axis on a horizontal surface portion of a support base that is fixed to the vertical wall portion of the upper rail, and that is An arm extends to the opposite side through a long groove bored in the vertical wall of the upper rail, and is connected to the seat backrest so as to be interlocked with the forward folding of the seatback. a memory lever connected to the upper rail; a restraining end pivotally connected to the vertical wall of the upper rail so as to be able to swing around a horizontal axis and engaging and holding the restrained arm of the memory lever; and a horizontal flange of the lower rail. The present invention relates to a seat slide device comprising a walk-in mechanism with a memory function including a memory plate having a release end that engages with a memory protrusion protruding from the seat slide device.

``Operation'' In normal use when the seat backrest is upright and stationary, the latch member provided on the upper rail side engages with the locking part connected to the lower rail at a position corresponding to the upper rail. The lower rail is non-sliding, and the seat is restrained so that it cannot move forward or backward.

By engaging and disengaging the operating lever, the latch member is engaged and disengaged from the locking part. When released, the upper rail and lower rail can slide, and when the seat is moved to the desired position forward or backward and the operating lever is released, A latch member engages the catch and the seat is restrained in that position.

When the backrest is folded down when getting on or off, the memory lever is activated and the latch member disengages from the locking part, and the seat is released from its restraints and moves to the front end of its forward/backward travel stroke, creating a walk-in operation that closes the space for getting on and off. or guaranteed.

When the memory lever is linked to the forward folding of the backrest, it is locked by the memory plate and is restrained from returning, so even if the seatback is raised at the front end of the forward/backward movement stroke, the memory lever will not return and will not latch. The member remains in the released state.

When the backrest is raised and the seat is moved backwards, the memory plate rides on the memory protrusion on the lower rail, releasing the memory lever's restraint, and the latch member engages with the corresponding locking part at that position, locking the seat. Ru.

That is, even if the backrest of the seat is raised after the walk-in operation, the seat is not immediately restrained, but performs a memory operation in which the seat is restrained after moving backward.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

FIGS. 1 to 4 show an embodiment of the present invention, and a seat slide device 10 includes a pair of rail units 2 disposed in parallel under a seat (not shown).
0 with various mechanisms attached to it.

The rail unit 20 is composed of an upper rail 21 slidably fitted to a lower rail 25, the upper rail 21 symmetrically joining the rail pieces 22, 22, and the lower rail 25 holding the T-shaped head 23 of the upper rail 21. It has an upward groove shape.

That is, the top rail 21 has vertical wall portions 23,
23 and rail pieces 22 and 22 together with an inverted T.
A horizontal flange 24a, which is joined in the shape of a letter and is bent horizontally from the lower end of the vertical wall portions 23, 23 and separated to the opposite end side.
24a and the holding flange 24 standing up from the tip
b and 24b form the head 24.

The lower rail 25 has a groove-shaped cross section that extends back and forth, with both side walls 27, 27 rising from both ends of the bottom wall 26, and horizontal flanges 28, 28 facing inward at the upper ends thereof, and further extending beyond them. Holding flanges 29, 29 are folded vertically downward.

The upper rail 21 is slidably inserted and fitted into the lower rail 25, and a roller 29a is interposed between the lower surface of the head 24 of the upper rail 21 and the upper surface of the bottom wall 26 of the lower rail 25. Holding flange 24b, horizontal flange 28 of lower rail 25, holding flange 29
Balls 29b, 29b are interposed between the two.

The rail unit 20 is provided with a locking mechanism 30. The lock mechanism 30 has vertical wall portions 23 and 2 on the upper rail 21 side of the rail unit 20.
Various members are attached to a support base 31 fixed to 3.

The support base 31 is fixed by placing a base flange 31a against one side of the vertical wall portion 23, spot welding the same, and caulking with a pin 31b.

A horizontal surface portion 32 extends so as to protrude from a base flange 31a of the support base 31, and has curled portions 32a, 32a formed at its tips, on which an operating shaft 33 is pivotably supported. The operating shaft 33 is connected to a slide operating lever (not shown).

The base of the latch member 34 is located between the curled portions 32a, 32a of the support base 31, and is fixed to the operating shaft 33, and the latch member 34 has an engaging and disengaging end 35 at its distal end.

In correspondence with the latch member 34, locking portions 36, 36, . The operating shaft 33 is biased by a biasing coil spring 33a in a direction such that the locking/disengaging end 35 of the latch member 34 engages with the locking portion 36.

In addition to the lock mechanism 30, a walk-in mechanism 40 with a memory function is provided.

The walk-in mechanism 40 includes a memory lever 41 pivotally supported on a horizontal surface portion 32 of a support base 31 fixed to the upper rail 21, and
The memory plate 45 is pivotally supported by the memory plate 45 and restrains the memory lever 41.

The memory lever 41 is pivotally attached to the horizontal surface portion 32 of the support base 31 via a vertical shaft 41a so as to be able to swing, and one swing end forms a restraining end 42, a connecting pin 42a is erected on the restraining end 42, and a restrained arm 34a extends from the base of the latch member 34, and this restrained arm 34a and the connecting pin 42a are connected by a cable 43.

The memory lever 41 has a restrained arm 44, and the restrained arm 44 extends to the opposite side through a long groove 23a formed in the vertical wall portion 23 of the upper rail 21. A connecting pin 44a is provided at the tip of the restrained arm 44, and an interlocking cable 49 that is pulled when the seat back (not shown) is folded forward is connected to the connecting pin 44a. There is.

The memory plate 45 has a fork shape, and its base is pivotally supported on the vertical wall portion 23 of the upper rail 21 by a pin 31b on the opposite side of the base flange 31a of the support base 31 so as to be rotatable around a horizontal axis.

One end of the memory plate 45 extending in a fork shape forms a restraining end 46 .
is provided with a claw 46a that locks the restrained arm 44 of the memory lever 41.

The other end of the memory plate 45 is the release end 4
7, and the lower rail 2 is attached to the release end 47.
Memory protrusion 2 protruding from the horizontal flange 28 of 5
A release piece 47a that rides on 8a is provided.

The memory plate 45 has a biasing spring 48 so that the constrained end 46 is connected to the constrained arm 4 of the memory lever 41.
4 in the direction of engagement.

Next, the action will be explained.

When the backrest of the seat (not shown) is upright and the walk-in operation is not performed, the memory lever 41
is in the released state shown in FIGS. 1-4a, and the latch member 34 is held in the locked-on position;
The engaging and disengaging end 35 engages with the locking portion 36, and the upper rail 21 and lower rail 25 are unable to slide.

If the slide operation lever (not shown) is operated to rotate clockwise in FIG. 2, the latch member 3
4 is rotated, the locking end 35 is disengaged from the locking portion 36, and the lock is released, making it possible to move the seat.

When the slide operating lever is released at an appropriate position, the locking/disengaging end 35 of the latch member 34 engages with the corresponding locking portion 36 at that position, and the seat is fixed.

When the seat backrest is folded down, it performs a walk-in operation. When the backrest is tilted forward, the interlocking cable 49 is pulled, and the memory lever 41 is pulled by the connecting pin 44a.
The restrained arm 44 of is pulled, and the memory lever 4
1 is rotated clockwise in FIG.

When the memory lever 41 rotates, the cable 4
3 pulls the restrained arm 34a, the latch member 34 is rotated, and the locking/disengaging end 35 is pulled by the locking part 3.
6, and the lock mechanism 30 enters the lock-off state. The seat, which is now movable forward, is moved to the front end position by the biasing force of a spring (not shown), forming a space for passengers seated in the rear seats to get in and out.

When the memory lever 41 is rotated, the claw 46a of the restraining end 46 of the memory plate 45 crosses over and engages with the restrained arm 44, thereby restraining the memory lever 41 as shown in FIG. 4b.

Even when the seat moves forward, the lock-off state continues as long as the backrest is reclined, and it returns to its original state even if the release piece 47a of the release end 47 of the memory plate 45 climbs over the memory protrusion 28a of the horizontal flange 28 of the lower rail 25. There isn't.

Next, when the backrest of the seat is raised, the interlocking cable 49 that pulls the memory lever 41 becomes loose, but the claw 46a of the restraining end 46 of the memory plate 45 engages with the restrained arm 44 and restrains the memory lever 41. As a result, the latch member 34 is held in the released position, and the seat can be moved even when the backrest is erected.

Therefore, when the seat at the front end position of the movement stroke is moved rearward, the upper rail 21 of the rail unit 20, the lock mechanism 30, and the walk-in mechanism 40 also move rearward.

The release piece 47a of the release end 47 moves backward and releases the memory protrusion 2 of the horizontal flange 28 of the lower rail 25.
8a, the memory plate 45 rotates and the claw 46a of the restraining end 46 engages the memory lever 41.
The memory lever 4 is removed from the restrained arm 44 of the memory lever 4.
1 is released from restraint.

When the memory lever 41 is released and rotated in the return direction, the latch member 34 also returns, and the locking/disengaging end 35 engages with the locking portion 36 of the lower rail 25, so that the upper rail 21 and the lower rail 25 are restrained from sliding against each other. Ru.

That is, when a walk-in operation is performed, the seat is not stopped by the lock mechanism 30 at the front end position, but performs a memory operation in which it is stopped only after moving backward.

In the above embodiment, a latch member that rotates and swings is shown, but it is also applicable to a latch member that moves linearly.

"Effects of the invention" According to the seat slide device of the invention, a walk-in mechanism with a memory function is constructed by simply providing a memory lever and a memory plate as members, so the rail has increased peel strength. A mechanism suitable for the unit can be formed with a simple structure, and a seat slide device with reduced cost and weight can be obtained.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a plan view of the main parts of the seat slide device, Figure 2 is a view from the arrow in Figure 1, and Figure 3 is a memory plate. 4a and 4b are front views showing various states, FIGS. 5 to 7 show conventional examples, FIG. 5 is a perspective view of the seat slide device, and FIG. 6 is a perspective view of the seat slide device. FIG. 5 is a cross-sectional view along the line in FIG. 5, and FIG. 7 is a cross-sectional view along the line in FIG. 5 during memory operation. DESCRIPTION OF SYMBOLS 10...Seat slide device, 20...Rail unit, 21...Upper rail, 23...Vertical wall portion, 24...Head, 25...Lower rail, 26...
...bottom wall, 27...side wall, 28...horizontal flange,
28a...Memory protrusion, 29...Holding flange,
30...Lock mechanism, 31...Support base, 32
. . . horizontal surface portion, 33 . . . operating shaft, 34 . . . latch member, 35 .
...Walk-in mechanism, 41...Memory lever,
42...restricted end, 44...restrained arm, 45...
...Memory plate, 46...Restricted end, 47...
Release end.

Claims (1)

[Claims for Utility Model Registration] A seat equipped with a locking mechanism in which an upper rail with an inverted T-shaped cross section is slidably fitted into a lower rail with a groove-shaped cross section that opens upward, and both rails are restrained in a desired position so as not to be slidable. In the slide device, the lower rail has side walls rising from both sides of the bottom wall and horizontal flanges inward from the upper end of each side wall, and the upper rail has a T-shaped head facing downward into the groove of the lower rail. a latch that is fitted into the top rail and has a vertical wall rising upward from the head, is attached to the upper rail, is engaged with a locking part connected to the lower rail, and is engaged and detached by an operating lever; and a support base fixed to the vertical wall of the upper rail, which is pivotably pivoted about a vertical axis to a horizontal surface of a support base, and the restrained arm passes through a long groove bored in the vertical wall of the upper rail to the opposite side. a memory lever that extends to the seat back and is connected to the seat back so as to be interlocked with the forward folding of the seat back, and that is connected to the latch member so as to engage and disengage separately from the operating lever; a memory plate that is pivotably pivoted around the memory lever and has a restraining end that engages and holds the restrained arm of the memory lever; and a release end that engages with a memory protrusion that projects from a horizontal flange of the lower rail. A seat slide device characterized by having a walk-in mechanism with a memory function.