JPH0332432Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention adjusts the front and back position of a car seat,
The present invention also relates to an improvement in the locking structure of a seat slide device that can be fixed in its adjusted position.

[Conventional technology]

As an example of a conventional lock structure of this type of seat slide device, as shown in FIG. 9, a movable rail 2 fixed to an automobile seat is slidably fitted onto a fixed rail 1 fixed to a vehicle body. ,
An engagement hole 3 is provided on the fixed rail 1 side, and an engagement protrusion 5a is provided on the movable rail 2 side and can be engaged with and disengaged from the engagement hole 3 by rotation of an operating shaft 4 supported thereon. Some devices are equipped with a locking member 5 (see FIG. 12).

The fixed rail 1, as shown in FIG.
The rail material, which has a substantially L-shaped cross section, is fixed to the floor of an automobile via a lower frame 6 with one side horizontal. Then, the movable rail 2 is placed on the gutter-shaped horizontal side 1a of the fixed rail 1 via the roller 7.
It is supported so that it can slide freely.

Further, a plurality of locking engagement holes 3 are arranged in a row on the vertical side 1b of the fixed rail 1 in the longitudinal direction thereof. This vertical side 1b constitutes a lock plate portion. The upper edge of this vertical side 1b is folded back into a U-shape to hold an extension 8b of the movable rail 2, which will be described later.

As shown in FIGS. 10 and 11, the movable rail 2 is made by fixing two rail members 8 and 9, each having a substantially U-shaped cross section, with their parallel opposite sides horizontal and back to back to each other. The edge of the upper side 8a of one of the rail materials 8 is folded upward to form an extension 8b, and the edge of the upper side 9a of the other rail material 9 is extended in the form of an upward fold. At the same time,
It is further extended horizontally to form a seat support portion 9b.

Also, the portion of the rail material 8 that faces the vertical side 1b of the fixed rail 1 is bulged out, and the vertical side 1b
Lock engagement holes 10 corresponding to the lock engagement holes 3 are arranged in a row in the bulged portion 8c.

The operating shaft 4 is pivoted on the movable rail 2 with a suitable bracket 11, parallel to the movable rail 2, and rotatable about the central axis. An operating handle 12 is firmly fitted into an operating lever portion 4a bent laterally from the front end of the operating shaft 4, and an appropriate intermediate portion near the rear end of the operating shaft 4 is provided with the above-mentioned engagement lever portion 4a. A locking member 5 having an engaging protrusion 5a that can be engaged with and disengaged from the holes 3 and 10 is fixed.

As shown in FIG. 12, this locking member 5 is formed with three engaging protrusions 5a, and the interval between the engaging protrusions 5a is the same as the interval between the engaging holes 3 and the engaging hole 10. is set equal to the interval. These three engagement protrusions 5a are spring-biased in a direction to engage any three consecutive engagement holes 3 and any three consecutive engagement holes 10. In FIG. 9, reference numeral 13 denotes a spring that urges the engagement protrusion 5a toward the engagement holes 3 and 10.

Thus, by rotating the operating handle 12 upward as shown by the arrow in FIG. 9, the lock member 5 is moved together with the operating shaft 4 as shown by the arrow in FIG. 9 against the biasing force of the spring 13. The lock member 5 is rotated so that the engagement protrusion 5a of the lock member 5 is inserted into either of the engagement holes 3, 10.
After completely disengaging the seat, move the seat to the desired longitudinal position, then release your hand from the operating handle 12, and use the biasing force of the spring 13 to release the engaging protrusion 5a of the locking member 5 into one of the engagement positions. Matching holes 3, 10
By engaging the movable rail 2 with the fixed rail 1, the seat can be adjusted in its longitudinal position.

[Problem that the invention attempts to solve]

In the locking structure of the conventional seat slide device as described above, a plurality of engagement protrusions 5a are formed on the locking member 5 in order to increase the locking strength. If the number and width of the protrusions are increased, the locking strength can be increased, but if the number and width of the protrusions are increased, the entire locking member 5 becomes larger and its dimensions in the direction of movement of the slide become larger. , after all, fixed rail 1
There was a problem in that the lock plate 1b portion provided on the lock plate 1b had to be made longer.

SUMMARY OF THE INVENTION The object of the present invention is to provide a lock structure for a seat slide device that solves all of the above-mentioned problems.

[Means for solving problems]

As a specific means for achieving the above object, the present invention provides a method in which a movable rail fixed to an automobile seat is slidably fitted onto a fixed rail fixed to a vehicle body, and an engaging portion is provided on the fixed rail side. In the seat slide device, the locking member is provided on the movable rail side and has an engaging portion that can be engaged with and disengaged from the engaging portion by rotation of an operating shaft pivotally supported thereon, wherein the fixed rail is The present invention provides a lock structure for a seat slide device, characterized in that a side engaging portion and a locking member side engaging portion are provided in a plurality of upper and lower stages, respectively, and are configured as a pair that engages with each other.

[Effect]

According to the locking structure of the seat slide device of the present invention, the engaging part on the fixed rail side and the engaging part on the locking member side are each arranged in multiple stages up and down. The meshing load will be received at the location, and the meshing load that was conventionally received at one location will be distributed to multiple locations, increasing the lock strength.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show a first embodiment of the present invention.

In this first embodiment, the same reference numerals are used for constituent members common to those of the conventional example shown in FIG. 9, and detailed explanation thereof will be omitted.

Reference numeral 14 denotes a lock member in the lock structure of the seat slide device of the present invention, which has a substantially L-shaped cross section and is fixed to the operating shaft 4.

Three engaging protrusions 14a are protruded from the horizontally bent tip of the lock member 14.
Three engagement holes 14b that open above each of the engagement protrusions 14a are bored in the vertical sides of the engagement projections 14a.

Reference numeral 15 denotes a lock plate in the lock structure of the seat slide device of the present invention, which has a substantially “〓” shape in cross section, and an extension of the lower horizontal bent portion 15c is long fixed to the lower surface of the fixed rail 1 along the longitudinal direction. has been done.

At the upper horizontally bent tip of the lock plate 15, ten or more engaging protrusions 15a are protruded at intervals of the engaging holes 14b, and on the vertical sides of the lock plate 15, the engaging protrusions 15a 10 opening downwards
Several engagement holes 15b are bored.

That is, the engaging protrusion 14a of the locking member 14
is engaged with the engagement hole 15b of the lock plate 15, and the engagement protrusion 15a of the lock plate 15 is engaged with the engagement hole 15b of the lock plate 15.
is adapted to engage with the engagement hole 14b of the lock member 14.

Therefore, in this first embodiment, the lock member 14 has three engaging protrusions 14a and one engaging hole 1.
Since there are three pieces 4b, they engage and mesh at a total of six parts, and the six parts receive the meshing load, so the respective loads are distributed and the lock strength is increased. The width of the locking member 14 is the same as that in the case of three conventional engaging protrusions 14a, so that the locking member 14 does not become larger.

5 to 8 show the second embodiment,
This is a modification of the first embodiment.

That is, in this second embodiment, the locking member 1
4, as shown in FIG.
The lock plate 15 is opposite to that of the first embodiment in that the lock plate 15 is provided with holes 15b, and correspondingly, as shown in FIG. There are more than 10 engaging protrusions 15 on the bottom.
A is drilled.

Therefore, its operation and effect are similar to those of the first embodiment described above.

In the two embodiments described above, the locking member 14 has an engaging protrusion 14a and an engaging hole 14b on the upper and lower stages.
In order to engage them, a mixture of engagement protrusions 15a and engagement holes 15b are provided on the upper and lower stages of the lock plate 15, but in other embodiments, the upper and lower parts of the lock member 14 may be In the lower stage, only the engagement protrusion 14a or only the engagement hole 14b is used,
In order to engage with these, only the engagement protrusions 15a or the engagement holes 15b are provided on the upper and lower stages of the lock plate 15.
Even if only one is provided, the same effect can be achieved.

[Effect of idea]

As described above, according to the present invention, the lock strength can be increased without increasing the size of the lock member and the lock plate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the lock structure of a seat slide device according to a first embodiment of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of the main part of FIG. 1, and FIG. An enlarged inner perspective view of the main parts of the lock member shown in
FIG. 4 is an enlarged side view of the main part of FIG. 1, FIG. 5 is an enlarged vertical sectional view of the main part of the lock structure of the seat slide device according to the second embodiment of the present invention, and FIG. FIG. 5 is an inner perspective view of the main part of the lock member, FIG. 7 is an outer perspective view of the main part of the lock plate shown in FIG. 5, and FIG. 8 is a side view of the main part of the lock plate shown in FIG. , FIG. 9 is a side view showing the lock structure of a conventional seat slide device, FIG. 10 is an enlarged rear view seen from the right side of FIG. 9, and FIG. 11 is a diagram showing the lock plate shown in FIG. FIG. 12 is an enlarged perspective view, partially cut away, of the movable rail, and FIG. 12 is an enlarged perspective view of the locking member of FIG. 9. 1... Fixed rail, 2... Movable rail, 3...
Engagement hole, 4... Operating shaft, 14... Lock member, 1
4a...Engagement protrusion (engagement part), 14b...Engagement hole (engagement part), 15...Lock plate, 15a...
Engagement protrusion (engagement part), 15b... engagement hole (engagement part).

Claims (1)

[Scope of utility model registration request] A movable rail fixed to an automobile seat is slidably fitted onto a fixed rail fixed to a vehicle body, and an engaging portion facing the longitudinal direction is provided on the fixed rail side, and an engaging portion is provided on the movable rail side therein. In a seat slide device comprising a locking member having an engaging portion that can be engaged and disengaged from the engaging portion by rotation of a pivotally supported operating shaft, the engaging portion on the fixed rail side and the locking member side may be engaged with each other. A lock structure for a seat slide device, characterized in that a plurality of upper and lower sections are provided in mutually interlocking sets.