JPH0239873Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to, for example, a seat track device for adjusting the position of a vehicle seat back and forth.

[Conventional technology]

Conventionally, in a double-side lock type seat track in which a main lock plate and a sub-lock plate are respectively fixed to each lower rail side of a pair of seat tracks, in order to release the sub-lock side earlier than the main lock side on the release handle side,
In the moment arm of the equalizing wire hook that works with the lock lever, the main lock side was set larger than the sub-lock side.

Therefore, when the lock lever on the main lock side is fully stroked, the center of rotation of the lock lever on the sub-lock side and the pulling direction of the equalizing wire become nearly in line, causing the equalizing wire to become stretched.

Therefore, the release handle operation force and the load applied to the equalizing wire and equalizing wire hook also increase.

Furthermore, if the moment arm of the equalizing wire hook on the main lock side cannot be set too long due to space considerations, the moment arm of the hook on the sub-lock side will also become small.

As a result, variations in the widthwise positions of the hooks on both sides due to component precision of the seat frame and seat track, and variations in the length of the equalizing wires cannot be absorbed, and the sub-lock side may not lock completely, or the main lock side may not be completely locked. may unlock earlier than the sublock.

Additionally, there is a system that moves the seat to a position where the front limb field is best, or moves the seat laterally, as shown in Fig. 8.

This is a "seat position adjustment device" disclosed in Japanese Utility Model Publication No. 50-90328, in which a lower guide 7 is slidably fitted to a lower slide plate 2 fixed to the vehicle body. An atspa slide rail 19 is perpendicular to the longitudinal direction of the lower guide 7.
A top guide 20 is slidably fitted to the top slide plate 19, and a seat 21 is fixed to the top guide 20.

[Problem that the invention attempts to solve]

However, even with the seat position adjustment device shown in FIG. 8, it is not possible to absorb variations in the widthwise position of both hooks due to component precision of the seat frame and seat track, and the sub-lock side may not be completely locked.

Therefore, the problem that this invention aims to solve is to eliminate the influence of variations in the widthwise position of both hooks due to component precision of the seat track, and to prevent the main lock side from unlocking earlier than the sub-lock side.

[Means for solving problems]

Therefore, this invention solves the above-mentioned problem with the lock lever 4 that engages with the main lock plate 3a.
This problem is solved by providing play 15 between the handle 6 and the release handle 6.

More specifically, referring to the reference numerals in FIGS. 2 and 4, each lower rail 2a, 2b of a pair of seat tracks 1 is fixed to the base in parallel.
A main lock plate 3a and a sub-lock plate 3b are respectively fixed on the sides, and lock levers 4a and 4b are engaged with each of these lock plates 3a and 3b, respectively. The lower rail 2a,
2b and upper rails 7a, 7b are engaged and disengaged, and a seat track locking device is formed so as to restrict their relative movement.

By providing a play (gap) 15 between the lock lever 4a that meshes with the main lock plate 3a and the release handle 6,
By operating the release handle 6, the lock release timing for releasing each of the lock levers 4a, 4b is delayed on the main lock side 4' than on the sub-lock side 4''.

[Effect]

According to the above-mentioned means, when the lower rails 2a, 2b and the upper rails 7a, 7b of the seat track 1 are engaged and disengaged, the lock release timing for releasing each lock lever 4a, 4b by operating the release handle 6 can be controlled by adjusting the lock release timing on the sub-lock side 4. Since the main lock side 4' is activated later than the sub-lock side 4'', the main lock side 4' does not release the lock earlier than the sub-lock side 4'', and the sub-lock is first released in conjunction with the operation of the release handle 6, and then the sub-lock is released. , the main lock is released.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

1 and 2 show a first embodiment of this invention, and as can be clearly seen from FIG. 4, a pair of seat tracks 1 are fixed to a base (not shown) in parallel. A main lock plate 3a and a sub-lock plate 3b are fixed to each of the lower rails 2a and 2b by means not shown, and lock levers 4a and 4b are respectively fixed to each of the lock plates 3a and 3b.
are engaged with each other, and these lock levers 4a
and 4b are interlocked via the equalizing wire 5, and the operation of the release handle 6 is transmitted to each lock lever 4a, 4b to engage and disengage each lower rail 2a, 2b of the seat track 1 and each upper rail 7a, 7b. The seat track locking device is configured to restrict relative movement.

More specifically, this seat track lock device has lock lever brackets 8a, 8b fixed to the top surface of each upper rail 7a, 7b by rivets 8' and welding, and as can be seen from FIG. The release handle 6 is rotatably supported in the holes 80a, 80a of the lock lever bracket 8a.

A chamfered portion 61 is formed on the free end 60 of the release handle 6, and an oval hole 90 of the equalizing wire hook 9 is formed in the chamfered portion 61.
are fitted together, so that the equalizing wire hook 9 always moves together with the release handle 6.

Furthermore, a lock lever 4a is rotatably supported by the release handle 6 through circular holes 40a, 40a of the lock lever 4a, and a hook portion 10 is formed on the lock lever 4a. Reference numeral 10 indicates claw portions 11 and 1 formed on the equalizing wire hook 9.
2.

Furthermore, a torsion spring 13 is inserted through the release handle 6, and this torsion spring 13 is inserted into the square hole of the lock lever 4a.
1a is always urged toward the lock plate 3a so as to mesh in the locking direction.

Note that numerals 14 and 14 in FIG. 1 are E-rings.

As can be seen from Figures 2 and 4,
By providing play (gap) 15 between the hook portion 10 of the lock lever 4a that engages with the main lock plate 3a and the claw portion 11 of the equalizing wire hook 9 fitted to the release handle 6, the release By operating the handle 6, the lock release timing for releasing each of the lock levers 4a, 4b can be adjusted to the sub-lock side 4''.
(See Fig. 4) The main lock side 4' is operated with a delay.

Note that 16, 16 in FIG. 4 are rollers, and 17, 17 on the main lock side 4' and sub-lock side 4'' are balls.

Further, reference numeral 18 on the sub-lock side 4'' in FIG.
b is rotatably supported.

Furthermore, FIG. 3 shows a second embodiment of this invention, and the difference from the first embodiment shown in FIGS. 1 and 2 is that the equalizing wire hook 9 of the first embodiment is replaced with an equalizing wire hook 9. 5 is divided into a wire hook portion 9a and claw portions 11 and 12, and the other configurations are the same as in the first embodiment, so the same reference numerals as in the first embodiment are given. , the explanation thereof will be omitted.

Now, based on the drawings from FIG. 4 to FIG. 7, the lock levers 4a and 4b are released from the main lock plate 3a and the sub-lock plate 3b by operating the release handle 6. An operating state in which the timing causes the main lock side 4' to operate later than the sub-lock side 4'' will be explained.

First, FIG. 4 shows that both the main lock side 4' and the sub-lock side 4'' are in the locked state, and therefore, there is a difference between the claw part 11 of the equalizing wire hook 9 and the hook part 10 of the lock lever 4a. There is sufficient play (gap allowance) 15 between the two sides.

When the release handle 6 is turned from the locked state shown in FIG. 4 in the direction of arrow A shown in FIG. Although the play between 15 is narrowed,
Because there is no contact due to the presence of a slight play 15,
The lock lever 4a on the main lock side 4' does not operate, so only the equalizing wire hook 9 on the main lock side 4' operates in the direction of arrow A, and the equalizing wire 5 is pulled in the direction of arrow B. The lock lever 4b on the sub-lock side 4'' is rotated about the shaft 18 in the direction of arrow C, and is operated in the direction in which the engagement between the square hole 41b of the lock lever 4b and the sub-lock plate 3b is released.

Furthermore, as shown in FIG. 6, when the release handle 6 is rotated in the direction of arrow A, the claw 11 of the equalizing wire hook 9 on the main lock side 4' is rotated in the direction of arrow D.
comes into contact with the hook portion 10 of the lock lever 4a,
Move the lock lever 4a on the main lock side 4' by arrow D.
the square hole 41a of the lock lever 4a.
When the main lock plate 3a starts to move in the direction of disengaging from the main lock plate 3a, the sub-lock side 4''
The square hole 41b of the lock lever 4b is completely released from the sub-lock plate 3b.

Furthermore, when the release handle 6 is further rotated in the direction of arrow A shown in FIG. completely removed from
Therefore, both the sub-lock side 4'' and the main lock side 4' are completely unlocked.

Note that the claw portion 12 formed on the equalizing wire hook 9 allows the release handle 6 to be
When turned in the direction opposite to the direction of arrow E in the figure, the claw portion 12 engages the hook portion 10 of the locking lever 4a.
This serves to prevent the release handle 6 from rotating any further in the direction of arrow E shown in FIG.

[Effect of idea]

As mentioned above, this design provides a play (gap) between the claw of the equalizing wire hook on the main lock side and the hook of the lock lever, so that by rotating the release handle, the main lock plate and the support can be connected. The lock release timing for releasing each lock lever from the block plate is as follows:
Since the main lock side is activated later than the sub-lock side, there is no need to make the moment arm of the equalizing wire hook on the sub-lock side smaller than that on the main lock side. Lock failures on the sub-block side due to variations and troubles with the lock release timing can be easily resolved, and at the same time, tension in the equalizing wire is less likely to occur, requiring less space and requiring less operating load on the release handle, making handle operation easier. It can also significantly improve your sexuality.

[Brief explanation of drawings]

Figures 1 and 2 show a first embodiment of this invention, with Figure 1 being an exploded perspective view and Figure 2 being
FIG. 1 is a perspective view showing the assembled state; FIG. 3 is a perspective view corresponding to FIG. 2 showing a second embodiment of this invention;
The drawings from FIG. 4 to FIG. 7 are front views showing the operation of the lock release timing of the seat track, and FIG. 8 is a perspective view showing the conventional example. 1...Seat track, 2a, 2b...Lower rail, 3a...Main lock plate, 3b...
Sub-lock plate, 4a, 4b... Lock lever, 5... Equalizing wire, 6... Release handle, 7a, 7b... Upper rail, 15
...Play (gap cost).

Claims (1)

[Scope of utility model registration request] A main lock plate and a sub-lock plate are fixed to each lower rail side of a pair of seat tracks that are fixed to the base in parallel.
Lock levers are engaged with each of these lock plates, and these lock levers are interlocked via equalizing wires, and the operation of the release handle is transmitted to each lock lever to engage the lower rail and upper rail of the seat track. In a seat track locking device configured to release the seat and restrict its relative movement,
By providing play between the lock lever meshing with the main lock plate and the release handle, the lock release timing for releasing each lock lever by operating the release handle can be delayed on the main lock side than on the sub-lock side. Features a seat track device.