JP2000313260A - Sheet slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly perform lock/unlock in a sheet slide device provided with respective sheet slides on the outerside and on the inner side on different height by specifying the shape of first and second arms of the loop handles operating the lock levers of the respective sheet slides. SOLUTION: Sheet slides 101, 107 on the outer side and the inner side are constituted of lower rails 103, 109 and upper rails 105, 111 movably engaged with the respective ones, and the inner side sheet slide 107 is provided on the higher position than the outer side sheet slide 101. For operating the lock levers 117, 119 of the respective sheet slides 101, 107, a loop handle 129 is provided. In this case, when the loop handle 129 is rotated between the lock position and the unlock position, arm parts 129a, 129b are set so that the loci of both are intersected when the rotational loci of the extreme end parts of the respective arm parts 129a, 129b on the inner side and the outer side are projected on the same plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device in which the center of rotation of a lock lever is at different heights.

[0002]

2. Description of the Related Art In recent years, in RV vehicles and mini vehicles, the outer seat slide and the inner seat slide have different heights in order to provide a space for jacks and shoes in the space below the seat. May be provided.

[0003] Such a seat slide device will be described with reference to FIG. In the drawing, reference numeral 1 denotes an outer side seat slide including a lower rail 3 provided on the floor side and an upper rail 5 movably engaged with the lower rail 3.

[0004] 7 is a lower rail 9 provided on the floor side.
And the upper rail 1 movably engaged with the lower rail 9
1 is an inner-side seat slide composed of No. 1; In the case of this conventional example, the inner seat slide 7 is provided at a position higher than the outer seat slide 1.

[0005] Upper rails 5, 11 of each seat slide
Lock teeth 13, 15 formed on the lower rails 3, 9
(Lock teeth 13 not shown) Lock lever 1 that can be engaged and disengaged
7, 19 are provided rotatably using pins 21, 23.

The lock lever 17 of the outer seat slide 1 and the lock lever 19 of the inner seat slide 7 are provided.
Means spring teeth 25, 27 and lock teeth 13, 1
5 are urged in the direction of engagement.

The lock lever 17 of the outer seat slide 1 and the lock lever 19 of the inner seat slide 7
Is operated, a loop handle 29 is provided. The loop handle 29 is provided on the outer seat slide 1.
Arm 29 connected to the lock lever 17
a, an inner arm 29b connected to the lock lever 19 of the inner seat slide 7, and a bridging portion 29 bridging the outer arm portion 29a and the inner arm portion 29b.
c.

Here, since the inner seat slide 7 is provided at a position higher than the outer seat slide 1, the loop handle 29 is directly locked with the lock levers 17,19.
To the loop handle 29 as shown in FIG.
The height of the center of rotation of the outer arm 29a differs from the height of the center of rotation of the inner arm 29b.

That is, when the tip of the inner arm 29b is moved from A to A 'in order to rotate the inner arm 29b of the loop handle 29 from the locked position to the unlocked position, the outer arm If the rotation center of 29a and the rotation center of the inner arm 29b are coaxial, the outer arm 29a moves from B to B ', and the loop handle 29 can rotate without deformation.

However, the center of rotation of the outer arm 29a is lower than the center of rotation of the inner arm 29b. When the loop handle 29 is in the lock position,
Tip of outer arm 29a and inner arm 2
Loop handle 2 so that there is no deviation from the tip of 9b
When the loop handle 29 is rotated to the unlock position, the outer arm 2 of the loop handle 29 is formed.
The tip of 9a moves from B to C, causing the maximum displacement (displacement of distance B'C) at the unlock position, impairing the reliability of unlocking, and further rotating the loop handle 29. There are times when you can't.

Therefore, the outer seat slide 1 includes:
A bracket 33 that holds the end of the loop handle 29 and is rotatably provided on the upper rail 5 using the pin 31.
And the outer arm portion 29 of the loop handle 29 is provided.
The center of rotation of a and the center of rotation of the inner arm 29b are coaxial with each other. Further, the lock lever 17 is extended to the loop handle 29 and provided with an engaging portion 35 for engaging with the loop handle 29. .

[0012]

However, in the seat track device having the above-described structure, the bracket 33 and the pin 31 are provided so that the center of rotation of the outer arm 29a of the loop handle 29 and the center of rotation of the inner arm 29b coincide with each other. In order to transmit the movement of the outer arm portion 29a of the loop handle 29 to the lock lever 17, an engagement portion 35 must be formed on the lock lever 17.
There is a costly problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a seat slide device capable of reducing costs.

[0014]

According to a first aspect of the present invention, there is provided a lower rail provided on a floor side.
A seat is provided, and first and second seat slides each including an upper rail movably engaged with the lower rail, and provided along respective upper rails of the first and second seat slides, and are rotated. First and second lock levers for inhibiting / permitting the movement of the upper rail, a first arm having a base end connected to the first lock lever, and a base end having the second lock lever. A second arm portion connected to the first arm portion, a loop handle formed of a bridging portion bridging a tip portion of the second arm portion, and rotation of the first lock lever. A seat slide device having different heights of a center position and a rotation center position of the second lock lever,
When the loop handle is rotated between the lock position and the unlock position, when the trajectory of the tip of the first arm and the trajectory of the tip of the second arm are projected on the same plane. A seat slide device wherein the first arm portion and the second arm portion are set such that their trajectories intersect.

When the loop handle is rotated between a locked position and an unlocked position, the trajectory of the distal end of the first arm and the trajectory of the distal end of the second arm are flush with each other. When the first arm portion and the second arm portion are set such that their trajectories intersect with each other, the trajectory of the distal end portion of the first arm portion and the trajectory of the second arm portion are projected. Regarding the deviation from the trajectory of the distal end portion, the direction of the deviation at the lock position is opposite to the direction of the deviation at the unlock position.

Therefore, the amount of deviation between the locus of the tip of the first arm and the locus of the tip of the second arm between the locked position and the unlocked position is reduced. For this reason, a component for matching the rotation centers of the first arm portion and the second arm portion is not required, and the cost can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, an intersection of a locus of the first arm portion and the second arm portion of the loop handle projected on the same plane is a lock release position. A seat slide device characterized in that:

The lock is released at the intersection of the trajectories of the first arm portion and the second arm portion of the loop handle, that is, without any deviation, thereby unlocking the first and second seat slides. Can be performed at the same time.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. A description will be given with reference to FIG. 1 which is a perspective view of a seat slide device according to an embodiment of the present invention.

Reference numeral 101 denotes an outer seat slide comprising a lower rail 103 provided on the floor side and an upper rail 105 movably engaged with the lower rail 103.

Reference numeral 107 denotes an inner seat slide including a lower rail 109 provided on the floor side and an upper rail 111 movably engaged with the lower rail 109.

In the case of this conventional example, the inner seat slide 107 is provided at a position higher than the outer seat slide 101. Upper rail 1 for each seat slide
At 05 and 111, lock teeth 113 and 115 formed on the lower rails 103 and 109 (the lock teeth 113 are not shown).
Lock levers 117, 119 having lock holes 117a, 119a which can be engaged and disengaged from the lock levers 117, 119 are rotatably provided using pins 121, 123.

One of the ends is an upper rail 105, 111.
In addition, the lock lever 117 and the lock lever 119 are locked by the lock teeth 1 by the urging force of the springs 125 and 127 whose other ends are locked by the lock levers 117 and 119.
13, 115 are urged in the direction of engagement.

In order to operate the lock lever 117 of the outer seat slide 101 and the lock lever 119 of the inner seat slide 107, the loop handle 12 is operated.
9 are provided.

The loop handle 129 of the present embodiment.
Is the lock lever 11 of the outer seat slide 101.
7, a rising portion 129d extending substantially upward from the tip of the connecting portion 129e.
129a, an inner arm 129b connected to the lock lever 119 of the inner seat slide 107, and a bridging bridge between the rising portion 129d and the inner arm 129b of the outer arm 129a. 129c.

As shown in FIG. 2, the rising portion 129d of the loop handle 129 of the present embodiment has a connecting portion 1d.
It was formed to rise obliquely forward from 29e. Next, the operation of the above configuration will be described.

Normally, the lock holes 117a and 119a of the lock levers 117 and 119 on the upper rails 105 and 111 engage with the lock teeth 113 and 115 on the lower rails 103 and 109 by the urging force of the springs 125 and 127, respectively. , 111 are prohibited (locked state).

Here, when the loop handle 129 is pulled upward against the biasing force of the springs 125, 127, the lock holes 117a, 1 of the lock levers 117, 119 are raised.
The engagement between the lock teeth 19a and the lock teeth 113 and 115 is released, and the upper rails 105 and 111 can be moved (unlocked state).

The upper rails 105 and 11 reach a desired position.
When the operation force on the loop handle 129 is released after moving the lock lever 117, the biasing force of the springs 125, 127 causes the lock holes 117a, 1 of the lock levers 117, 119 to be released.
19a re-engages with the lock teeth 113, 115 and returns to the locked state in which the movement of the upper rails 105, 111 is prohibited.

When the loop handle 129 is rotated from the locked state to the unlocked state, the rotation trajectory of the tip of the inner arm 129b of the loop handle 129 and the rotation trajectory of the tip of the outer arm 129a are the same. When projected on a plane, the result is as shown in FIG.

That is, the tip of the outer arm 129a moves from D to D ', and the inner arm 129b
Moves from B to B 'and crosses at point E on the way. The shift amount in this case is b.

On the other hand, the trajectory of the tip of the outer arm portion 29a described in FIG. 5 for explaining the conventional example changes from B to C, and the shift amount becomes a (> b). Compared to the loop handle 29 having the shape shown in FIG. 5, the amount of deviation between the trajectory of the distal end of the outer arm 129a and the trajectory of the distal end of the inner arm 129b between the locked position and the unlocked position is smaller. Since the number of components is reduced, there is no need for a component for matching the rotation centers of the outer arm portion and the inner arm portion as in the related art, and the cost can be reduced.

If the intersection E of the trajectory of the outer arm 129a and the inner arm 129b of the loop handle 129 is set as the unlock position, the lock can be released without any deviation, and the outer and inner sides can be unlocked. The seat slide can be unlocked at the same time.

[0034]

As described above, according to the first aspect of the present invention, when the loop handle is rotated between the lock position and the unlock position, the tip of the first arm portion is rotated. By projecting the trajectory and the trajectory of the tip of the second arm on the same plane, by setting the first arm and the second arm so that both trajectories intersect, In the deviation between the trajectory of the distal end of the first arm and the trajectory of the distal end of the second arm, the direction of the deviation at the lock position is opposite to the direction of the deviation at the unlock position.

Accordingly, the amount of deviation between the locus of the tip of the first arm and the locus of the tip of the second arm between the locked position and the unlocked position is reduced. For this reason, a component for matching the rotation centers of the first arm portion and the second arm portion is not required, and the cost can be reduced.

According to the second aspect of the present invention, the lock is released at the intersection of the trajectories of the first arm portion and the second arm portion of the loop handle, that is, in a state where there is no displacement, so that the first and second locks are released. The two seat slides can be unlocked at the same time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a seat slide device according to an embodiment.

FIG. 2 is a perspective view of the loop handle of FIG. 1;

FIG. 3 is a diagram illustrating a rotation locus of an arm portion of the roux handle of FIG. 2;

FIG. 4 is a perspective view of a conventional seat slide device.

FIG. 5 is a diagram illustrating a locus of a loop handle of a conventional seat slide device.

[Explanation of symbols]

 101 Outer side (first) seat slide 103, 109 Lower rail 105, 111 Upper rail 107 Inner side (second) seat slide 117, 119 Lock lever 129 Loop handle 129a Outer side (first) arm portion 129b Inner side ( (Second) arm part 129c bridge part

Claims (2)

[Claims] A first rail and a second seat slide provided on a floor side, the first and second seat slides each including an upper rail movably engaged with the lower rail; and each of the first and second seat slides. First and second lock levers that are provided along the upper rail and that rotate / prohibit / allow movement of the upper rail, and a first arm whose base end is connected to the first lock lever. Part, a second arm part whose base end is connected to the second lock lever, the first arm part, a loop handle including a bridging part bridging the tip part of the second arm part. A seat slide device having a height different from a rotation center position of the first lock lever and a rotation center position of the second lock lever, wherein the loop handle is locked. When the trajectory of the tip of the first arm portion and the trajectory of the tip of the second arm are projected on the same plane when rotating between the position and the unlocking position, Wherein the first arm portion and the second arm portion are set so as to intersect with each other. 2. The seat slide device according to claim 1, wherein the intersection of the trajectories of the first arm portion and the second arm portion of the loop handle projected on the same plane is a lock release position.