JPS6094835A - Walk-in mechanism for seat slide - Google Patents

Abstract

PURPOSE:To keep a locking means from being seen from outside, by providing the locking means inside a seat and placing the members of the locking means on a side of an upper rail. CONSTITUTION:A lock for walking-in and another lock for a seat adjuster are provided inside the upper rail of a seat. A lever 14' is supported with a pivot shaft on a bracket 13'. The lever 14' has a hole 14c, in which a spring 18 is engaged, and another hole 14d for fitting a walking-in lock member 17 by a shaft. The lock member 17 has a hole 17a and a rivet 17b for pivotally coupling the member to the walking-in lever 14'. The spring 18 is provided between the lock member 17 and the lever 14'.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat slide walk-in mechanism used, for example, in a seat adjuster for adjusting the longitudinal position of a front seat of a two-door passenger car.

1 to 6 are explanatory diagrams of the operation of the seat adjuster.

FIG. 1 schematically depicts a seat 2 provided on a vehicle body 1. A seat adjuster 5 is provided to adjust the position of the seat 2 in the longitudinal direction as indicated by the reciprocating arrow A.

4 is a lower rail fixed to the vehicle body 1, and 5 is an upper rail supported by the lower rail 4 so as to be slidable in the longitudinal direction. Hereinafter, the lower rail 4 and the upper rail 5 will be collectively referred to as a slide rail.

A locking means 7 equipped with a manual operation lever 6 is provided so that the above-mentioned sliding movement can be locked and released as desired.

In order to make the above device convenient, the locking means 7 is interlocked with the seat back 2a of the seat 2, and when the seat back 2a is tilted forward as shown in FIG. 2, the locking function of the locking means 7 is released and the seat can be freely slid forward in the direction of arrow B (biasing with a spring in the direction of arrow B is also practiced).

As shown in FIG. 6, when the seat back 2a is erected and the seat is moved backward, the locking means 7 is activated and the front and back positions of the seat are locked.

One of the conventional seat adjusters with the above functions
Examples are shown in FIGS. 4 to 6.

Figure 4 is a plan view, Figure 5 is a side view, Figure 6 is c of Figure 5.
-c sectional view.

In these figures, 4 is the aforementioned lower rail, and 5 is the upper rail. As shown in FIG. 6, the upper rail 5 has rollers 8. It is slidably supported via a ball 9. 6 is a manual operation lever, 6a is a lever shaft, and 6b is a bracket fixed to the upper rail 5 so as to rotatably support the lever shaft 6a.

In order to lock the sliding movement between the upper rail 5 and the lower rail 4, a locking plate 10 having a large number of unevenness 10a arranged in a row is fixed to the lower rail 4, and a locking claw 11 that engages with the locking plate 10 is fixed to the lower rail 4. It is fixed to the lever shaft 6a. Reference numeral 12 denotes a torsion coil spring that biases the lock pawl 11 in the engagement direction arrow D (FIG. 6). As in this example, the locking hole 10a
Instead of fixing the locking plate 10 having a row of locking holes on the lower rail 4, there is also a structure in which locking holes (not shown) are arranged in a row on the side surface of the lower rail 4.

To interlock the lock claw 11 with the seat back,
A lever 21 is pivotally attached to a bracket 6b with respect to the upper rail 5. It has 22 pivot shafts.

A wire (not shown) is connected to one end 21a of the lever 21 so that a force in the direction of arrow E is applied to the lever 21 when the seat back is tilted forward.

When the lever 21 is rotated in the counterclockwise direction in FIG. 4 by the force E, the other end 21b of the lever pushes the lock pawl 11, causing it to rotate in the opposite direction of the arrow in FIG. Along with this, the lock claw 11 is removed from the locking unevenness 10a. When the force E disappears, the lock pawl 11 is inserted into the locking hole 0a by the biasing force of the torsion coil spring 12.

As described above, the conventional device shown in FIGS. 4 to 6 guides the upper rail carrying the seat in a slidable manner by means of the lower rail fixed to the vehicle body, and can be manually operated to lock the above-mentioned sliding movement. and a means for interlocking a lever member pivotally supported with respect to the upper rail with the rotation of the seat back, the lever member transmitting an operating force in the unlocking direction to the locking means. However, a walk-in mechanism has been added to make this device even more convenient.

The walk-in mechanism is a mechanism in which the seat back 2a is tilted forward to move the seat 2 forward as shown in FIG. As shown in Fig. 6, when the machine is moved backward in the direction of arrow B' and reaches a predetermined position, the locking means 7 is activated to lock the backward movement and fix the position in the forward and backward directions. I'm looking forward to it.

Next, the walk-in configuration and operation of the conventional apparatus shown in FIGS. 4 to 6 will be explained.

As can be easily understood from the walk-in operation described above,
The walk-in mechanism has the following functions: (a) When the seat back is tilted forward one degree to disengage the lock claw 11 from the unevenness 10a, the lock claw 11 is prevented from engaging with the unevenness 10a even if the seat back is subsequently raised. and (b) the function of releasing the meshing prevention when the seat is slid rearward and reaches a predetermined position.

As shown in FIG. 4, a walk-in lock 23 is rotatably attached to one end 21a of the lever 21, and is biased clockwise by a walk-in spring 24.

A walk-in pin 25 is installed near the free end of the walk-in lock 25 described above.

In the state shown in Fig. 4, when the seat back (not shown) feels forward and the lever 21 receives a force in the direction of arrow E and rotates clockwise as shown in the figure, the walk-in lock 25
The walk-in bin 25 planted in the platan) 6b
The lever 21 is engaged with the four portions 6b-1 provided in the left side and locks the lever 21 from turning to the left or turning to the restoring position. Therefore, even if the seat back is upright and the force in the direction of arrow E disappears, the lever 21 continues to press the lock pawl 11 and prevents the lock pawl 11 from engaging with the unevenness 10a.

Furthermore, a walk-in plate 26 is fixed to the lower rail 4 in order to release the above-mentioned meshing prevention function at a predetermined position.

When the walk-in pin 25 is engaged with the four parts 6b-1 of the bracket 6b (the restoring rotation of the lever 21 is locked), the upper rail 5 and the bracket fixed thereto 6b are connected to the lower rail. When the walk-in bin 25 returns to the right side in the figure from the state where it had been sliding to the left in the figure (in front of the seat) with respect to When it makes contact, it rides up on the slope of the front end 26a and comes off from the recess 6b-1. As a result, the counterclockwise rotation of the lever 21 is unlocked, and the lock pawl 11 pushes back the lever 21 by the biasing force of the torsion coil spring 12 and engages with the unevenness +Oa to lock the upper rail 5 from sliding. .

The conventional walk-in mechanism configured as described above had the following problems.

(a) As shown in FIG. 4, this locking device with a walk-in mechanism protrudes from both the left and right sides (up and down in the figure) of the upper rail 5 and lower rail 4. For this reason, when these members slide back and forth (left and right in the figure) together with the seat, they are likely to get caught on clothes or other objects, and may also come into contact with the human body.

In the conventional devices shown in FIGS. 4 to 6, it is essential to take measures such as providing a cover to prevent the mechanical parts from being exposed and for safety.

(b) If the seat adjuster is provided with a walk-in function, members such as the bracket (6b) and the walk-in lock 25 in the above-mentioned rows must be specially made and separate from the seat adjuster without the walk-in function. It becomes a component of the model.

(c) Since the members that make up the walk-in mechanism are attached to the upper surface of the upper rail, the lower surface of the sheet to be supported by the upper rail must be set high.

Furthermore, the walk-in structural portion on the lower side of the seat is visually unsightly and reduces the product value. Therefore, it was sometimes necessary to provide a cover to prevent the structural parts from being exposed and for safety reasons.

The present invention was made in view of the above-mentioned circumstances, and its purpose is (a) to prevent both the seat adjuster locking member and the walk-in locking member from being visible and in contact with the human body; (b) The locking mechanism of the seat adjuster without a walk-in mechanism can be used in common without changing the seat adjuster, and the walk-in mechanism can be used as a unit. A walk-in mechanism for the seat slide for the seat adjuster that can be attached and does not require raising the 0'9 seat mounting position, and also does not require the installation of a cover for both appearance and safety reasons. This is what we are trying to provide.

In order to achieve the above object, the seat slide walk-in mechanism of the present invention includes a seat adjuster lock member and a walk-in lock member disposed inside the seat, and these components are attached to the upper rail. It is characterized by being installed on the side.

Next, FIG. 7 is a schematic drawing of one embodiment of the walk-in mechanism of the present invention in order to explain the installation relationship of the walk-in mechanism of the seat slide for the seat adjuster of the present invention. In the plan view, 4, 4 is the lower rail, 5
- 5tj Niatsvaler. In this embodiment, the walk-in locking means is installed inside the upper rail 5 on the right side in the figure (on the left side in the figure) together with the locking means for the seat adjuster.

The arrow HX view is shown in Fig. 8, and the IX-I
The X cross section is shown in FIG. This embodiment is shown in Figures 4 to 6.
The present invention is applied to the conventional device shown in the figure, and the upper rail 5. The lever shaft 6a and the lock pawl are the same or similar components to those in the conventional device.

The bracket 16 shown with a dashed line corresponds to the bracket 16 of the conventional device, and pivotally supports the lever 14' by the pivot @15. A perspective view of the portion shown in FIG. 7 is shown in FIG. 10.

The lever 14' is a walk-in lever provided with the release lever 14 of the conventional device and a hole 14d for pivoting a walk-in lock 17, which will be described later. As the seat pack is tilted, the lower end 14b of the lever moves to the direction indicated by the arrow E.
The release lever 14 is similar to the conventional release lever 14 in that it is pulled in the same direction and that the upper end 14a of the lever has the function of pushing up the hook 16 to release the lock.

As shown in FIG. 10, the lock 17 for walk-in
Configure. The walk-in lock 17 of this example is provided with a hole 17a1 and a rivet 17b for pivotally attaching to the walk-in lever 14 at the bottom of the lever-like member. The assembled state of this walk-in lock 17 is as shown in FIG. In order to bias this walk-in lock 17 in the counterclockwise direction in FIG. 8, a spring 18 is interposed and engaged between it and the walk-in lever 14.

The present invention provides a retaining portion that locks relative movement between the walk-in locking member and the upper rail. In this embodiment, the securing means is constructed as follows.

The lower end of the bracket 13' is bent to provide a locking protrusion 15a.

The walk-in lock 17, which is biased with rotational force (counterclockwise in FIG. 8) by the spring 17 as described above, brings its lower side into contact with the projection 13a. When the pivot 17b of the walk-in lock 17 rotates around the walk-in plate 150, the lower side 17c and the protrusion 13a slide.

FIG. 8 depicts a state in which the seat back is not tilted forward, that is, a state in which the walk-in lever 14' is not receiving any force in the direction of arrow E. When this walk-in lever 14 is pulled in the direction of arrow E and rotated counterclockwise, its upper end 14a pushes up the hook 16 and releases the sliding lock of the slide rail.

When the walk-in lever 14' rotates counterclockwise as described above, in order to lock the walk-in lock 17 pivotally supported on the walk-in lever 14', its lower side 1
A notch 17d for retention is provided near the free end of 7c.

FIG. 11 is a side view of the walk-in lever 14' rotated by a force in the direction of arrow E as the seat pack is tilted, and FIG. 12 is an end view of the same. The walk-in lock 17 is biased counterclockwise by the spring 18, so by touching the lower side 17c with the locking protrusion 13a of the bracket 1'5, the walk-in lever is closed as shown in FIG. 14' pushes up the hook 16, and the walk-in lock +7d is engaged with the protrusion +3a. For this reason,
Even if the seat back is raised to eliminate the force in the direction of arrow E, the walk-in lever 14' keeps the hook 16 pushed up. Therefore, the sliding lock of the slide rail continues to be released, and the seat can slide back and forth.

In order to automatically lock the sliding movement of the slide rail when the seat, which can freely slide back and forth as described above, slides backward and reaches a predetermined position, the device of the present invention has the aforementioned locking member ( The retaining portion (notch 17d and protrusion 15a in this example) comes into contact with the walk-in lock 17) in this example.
HIIIh in the direction where the and are separated
V to stick.

In this example, a walk-in plate 19 as shown in FIG. 10 is configured as the above-mentioned driving member. This member serves as a cam for rotating the walk-in lock 17, as will be described later. On the other hand, the walk-in lock 17 on the side to be rotated is formed with a curved edge 17e that serves as a cam follower.

As shown in FIG. 15, the walk-in plate 1
9 to the lower rail 4.

When the hot rail 5 supporting the seat is slid rearward (to the right in the figure), the walk-in plate 19 approaches the walk-in lock 17 relatively, and the walk-in plate 19 approaches the walk-in lock 17 as shown by the imaginary line. It comes into contact with the edge 17e of the lock 17, pushes up the walk-in lock 17, and rotates it clockwise in the figure. By this clockwise rotation, the notch 1
7d and the protrusion 13a are disengaged. When the notch 17d is removed from the projection 13a in the state shown in FIG. 11 as described above, the walk-in lever 14' becomes free to rotate. As mentioned above, since the locking shaft 6a is biased in the direction of inserting the locking claw into the locking plate (by the torsion coil spring 12 in FIG. When it is no longer possible to push up the slide rail, the lock pawl 11 fits into the locking hole 10a of the locking plate 10 to lock the slide rail from sliding.

Due to the above-mentioned action, according to the seat slide equipped with the walk-in mechanism of the present invention, when the seat pack is tilted forward, the seat can freely slide back and forth, and even when the seat back is upright, the sliding seat is not engaged. It becomes unstoppable. and,
When the seat is moved backwards, it automatically locks in place.

As can be easily understood from the above-mentioned effects, the predetermined position at which the retreated seat should be locked can be arbitrarily set by adjusting the mounting position of the walk-in plate 19 with respect to the lower rail 4.

Further, in the above embodiment, the locking protrusion 15a was formed on the bracket 16' as a mating member for the notch 17d of the walk-in lock 17, but in the case of carrying out the present invention, the retaining means is a notch and a protrusion. However, the present invention is not limited to this, and any means may be used, such as a bottle and a hole. Furthermore, the mating member for the walk-in lock 17 is not limited to the bracket 15'. In the present invention, providing a retaining portion on each of the lock member and the upper rail means that the retaining portion is provided on each of the lock member (walk-in lock 17 in this example) and the member fixed to the upper rail. The intention is to provide a removable retaining part.

As shown in FIG. 10, the device of this embodiment includes a locking means (lock claw 11, etc.) for the seat adjuster,
The walk-in components (walk-in lever 14', walk-in lock 17, etc.) are assembled and can be installed on either the left or right side of the slide rail, so they can be installed inside the seat. can be placed.

In addition, in the device of this embodiment, a locking member for a walk-in is attached to the upper rail 5 along with a locking means for a seat adjuster.
Since it is provided on the side surface of the upper rail 5, there is no need to raise the position of the seat to be installed on the upper rail 5 (more specifically, there is no need to raise the position of the lower surface of the seat in order to provide the walk-in mechanism).

Furthermore, the members constituting the walk-in mechanism of this example are the 10th
The U portion shown in the figure can be configured as one unit. Therefore, there is no need to make major modifications to the normal seat adjuster device to which this unit is attached, and it can be used as is. In other words, it is possible to maintain compatibility between the component parts of the seat adjuster with a walk-in mechanism and the component parts of a seat adjuster without a walk-in mechanism, and it is possible to maintain the compatibility between the component parts of the seat adjuster with a walk-in mechanism and the component parts of a seat adjuster without a walk-in mechanism. Make it easy.

As detailed above, the walk-in mechanism of the present invention includes a seat adjuster locking member and a walk-in locking member disposed inside the seat, and these components provided on the side surface of the upper rail. In addition, both the locking member for the seat adjuster and the locking member for the walk-in are not visible from the outside, and
It can be installed so that there is no risk of being caught in objects that come into contact with the human body, and there is no need to provide a walk-in cover. Furthermore, an excellent practical effect is achieved in that the locking mechanism of a seat adjuster without a walk-in mechanism can be used in common without changing and the walk-in mechanism can be attached as a unit.

[Brief explanation of the drawing]

1 to 6 are explanatory diagrams of the operation of the seat adjuster and walk-in mechanism. 4 to 6 show the seat adjuster, with FIG. 4 being a plan view, FIG. 5 being a side view, and FIG. 6 being a sectional view. FIG. 7 to FIG. 15 show one example of the present invention.
Fig. 7 is a schematic plan view schematically drawn to show the mounting positions of the constituent members, Fig. 8 is a view in the direction of the ■ arrow in Fig. 7, and Fig. 9 is the same <IX- IX sectional view, Figure 10 is an exploded perspective view, Figure 11 is a side view of the walk-in lock in a locked state, Figure 12 is an end view of the same part cut away, and Figure 15 is the operation. It is an explanatory diagram. 4...Lower rail, 5...Upper rail, 6...
Manual operation lever, 6a...Lever shaft, 10...% stop plate, 10a...Irregularities, 11...Lock claw, 12...
・Torsional coil spring, 13°15'...bracket),
15a...Latching protrusion, 14...Release lever, 14
'...Walk-in lever, 15...Pivot shaft, 16
...Hook, 17...Walk-in lock, 17b
... Rivet, 17c... Lower side, 17d... Notch as a retaining part, 17e... Curved edge, 18...
・Spring, 19...Walk-in plate as a driving member. Patent Applicant Isuy Jidosha Co., Ltd. Ichimoto Kari Co., Ltd. Agent Patent Attorney Tadashi Akimoto Back Box 1 Figure Flute 2 Direction 1 5 Figure 0-0'' Figure 6 Figure 7 f! M8 figure

Claims (1)

[Claims] A walk-in mechanism for a coot slide for a seat adjuster, characterized in that a lock member for the seat adjuster and a lock member for the walk-in are arranged inside the seat, and these obtained members are provided on the side surface of the upper rail. .