JPH11115561A - Seat slide device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent coming off of a rubbing noise preventing means from a locating pin, while preventing generation of rubbing noise between the locating pin and an engaging hole of a floor panel. SOLUTION: A fixed rail 8 fixed to a floor panel 3 and a movable rail fixed to a seat are combined able to respectively slide, the fixed rail 8 has a locating pin 9 supported thereto to be engaged with an engaging hole 10 of the floor panel 3, also in a peripheral surface of a locating part 9a of the locating pin 9, a rubbing noise preventing means 12 is arranged, which prevents contact of the engaging hole 10 of the floor panel 3 with the locating pin 9, the locating part 9a of the locating pin 9 is supported so as to be wrapped by a bush 13 formed of synthetic resin material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat slide device.

[0002]

2. Description of the Related Art A slide device for sliding a vehicle seat back and forth is known (for example, Japanese Utility Model Laid-Open No. 1-99).
No. 734).

In general, as shown in FIGS. 5 and 6, a movable rail 2 fixed to an automobile seat 1 is inserted into a recess 4 of a floor panel 3 and is moved forward and backward as shown in FIGS. It is slidable back and forth with respect to a fixed rail 8 fixed by a bolt 7 fastened to a nut 6 fixed to a lower side of a bottom surface 4a in the recess 4 via a bracket 5 fixed by welding at a separated position. It is what we support.

The bracket 5 has locating pins 9, 9
Are respectively suspended and inserted into the engagement holes 10 and 10 formed in the floor panel 3, whereby the positioning of the fixed rail 8 with respect to the floor panel 3 is performed.

The position of the fixed rail 8 with respect to the floor panel 3 is an important factor that determines the front most (most forward position) and the rear most (last position) of the seat 1.

[0006]

However, in such a conventional technique, as described above, the engagement holes 10, 10 formed in the floor panel 3 are originally used for positioning with respect to the floor panel 3. Locating pins 9, 9 hanging from the fixed rail 8 via the bracket 5 are inserted into the engaging holes 10, 10, which are caused by distortion of the floor panel 3 itself due to vibration caused by running of the automobile.
The location pins 9 and 9 do not follow the positional deviation, and the end faces of the engagement holes 10 and 10 and the peripheral surfaces of the location pins 9 and 9 are rubbed, which may cause abnormal noise.

When the diameter of the engaging holes 10 and 10 is increased in order to prevent the end surfaces of the engaging holes 10 and 10 from rubbing against the peripheral surfaces of the locating pins 9 and 9, the original function of positioning is impaired. Therefore, the position of the fixed rail 8 needs to be readjusted.

This tendency becomes greater as the length of the fixed rail 8 itself becomes longer, which is disadvantageous in making the seat longer.

As a countermeasure, when a rubbing noise preventing means (not shown) made of closed-cell polyurethane foam is interposed between the bracket 5 and the floor panel 3, the bolt 7 is fastened to the nut 6 by the force of fastening. It is conceivable that the rubbing noise preventing means may enter between the locating pin 9 and the engaging hole 10 so that no rubbing noise is generated.
Since the peripheral surface is smooth and the frictional resistance is small, there is a possibility that a new problem that the rubbing noise prevention means falls off the locate pin 9 itself.

The present invention has been made by paying attention to such a conventional technique, and the rubbing noise preventing means is provided while preventing occurrence of rubbing noise between a locating pin and an engaging hole of a floor panel. An object of the present invention is to provide an automobile seat slide device which does not fall off from a locate pin.

[0011]

According to a first aspect of the present invention, a pair of left and right fixed rails fixed to a floor panel and a pair of left and right movable rails fixed to a seat are provided. The fixed rail has a locating pin supported by the fixed rail and engaged with an engaging hole of the floor panel, and a fixing member of the floor panel is attached to a peripheral surface of a locating portion of the locating pin. In a vehicle seat slide device provided with a rubbing noise preventing means for preventing contact between a mating hole and the locating pin, a locating portion of the locating pin is supported so as to be wrapped by a bush made of a synthetic resin material. It is characterized by becoming.

According to the first aspect, since the bush surrounds the locating portion of the locating pin, the bush is reliably interposed between the locating portion of the locating pin and the engaging hole of the floor panel. The generation of rubbing noise between the engaging holes is prevented.

[0013] Further, since the bush holds the rubbing noise preventing means, the bush is reliably prevented from falling off from the locating pin.

According to a second aspect of the present invention, there is provided the seat slide device for an automobile according to the first aspect, wherein a protrusion for holding the rubbing noise preventing means is formed on a peripheral surface of the bush. .

According to the second aspect of the present invention, the rubbing noise preventing means is engaged with the projection of the bush, so that the rubbing noise preventing means can be more reliably held.

According to a third aspect of the present invention, in the vehicle seat slide device according to the second aspect, the projection of the bush is formed intermittently in a longitudinal direction of the locating pin.

According to the third aspect of the present invention, even if a slight error occurs in the diameter of the bush and the rubbing noise preventing means, the bush and the rubbing noise preventing means engage with any of the intermittently formed projections, so that it is more reliable. The rubbing noise preventing means can be held.

The invention according to claim 4 is the invention according to claims 1 to 3.
An automobile seat slide device according to any one of the above,
A step portion capable of holding the bush is recessed on the peripheral surface of the locate portion of the locate pin.

According to the fourth aspect of the present invention, since the bush itself is held by the step recessed on the peripheral surface of the locating portion of the locating pin, the rubbing noise preventing means can be more reliably held. Become.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention. The same members as those shown in FIGS. 5 and 6 are denoted by the same reference numerals.

Reference numeral 1 denotes a vehicle seat, and a pair of left and right movable rails 2 are fixed to the lower surface of the vehicle seat 1.

On the other hand, a recess 4 is formed in the floor panel 3, a pair of right and left fixed rails 8 are fixed in the recess 4, and the movable rail 2 inserted into the cross section of the fixed rail 8 is It is combined with the fixed rail 8 so as to be able to slide back and forth by rollers and bearings (not shown).

The fixed rail 8 has a narrow opening 1 on its upper surface.
1 and the entirety of the recess 4 of the floor panel 3
The upper surface 8a of the fixed rail 8 and the surface of the floor panel 3 are flush with each other.

Therefore, despite the fact that the fixed rails 8 are provided on the floor panel 3, the surface of the floor panel 3 is flattened and the appearance is good. There is no risk of getting stuck in

Further, since the opening 11 of the fixed rail 8 is narrow, a thin heel such as a high heel generally worn by a woman is prevented from entering the fixed rail 8 from the opening 11 and foreign matters and dust are also prevented. It is difficult to penetrate into the fixed rail 8.

Further, the upper surfaces 8a, 8a of the fixed rails 8, 8
The decorative member 12 is disposed so that the opening 11 is difficult to see, and the lip 12a of the decorative member 12 contacts the vertical surface of the movable rail 2 so that the inside of the fixed rail 8 cannot be seen. I am giving.

The fixed rail 8 is connected to the recess 4 through a bracket 5 fixed by welding at a position separated from the front and rear.
It is fixed by a bolt 7 fastened to a nut 6 held below the inner bottom surface 4a.

The bracket 5 has locating pins 9, 9
Are respectively dropped and inserted into the engagement holes 10 and 10 formed in the concave portion 4 of the floor panel 3, thereby positioning the fixed rail 8 with respect to the floor panel 3.

Reference numeral 12 denotes a rubbing sound made of a closed-cell polyurethane foam disposed on the peripheral surface of the locating portion 9a of the locating pin 9 so as to prevent contact between the engaging hole 10 of the floor panel 3 and the locating pin 9. It is a means of prevention.

Reference numeral 13 denotes a ring-shaped bush made of a synthetic resin material which is supported so as to enclose a step 15 which is recessed on the peripheral surface of the locating portion 9a of the locating pin 9. The bush 13 has a slit 13a,
It is formed in a C-shaped cross section.

On the peripheral surface 13b of the bush 13, projections 14 for holding the rubbing noise preventing means 12 are formed between the slits 13a in the horizontal direction (see FIG. 3) with the vertical direction as an axis.

The protrusions 14 of the bush 13 are formed intermittently, that is, at intervals of 2 mm while the length of the locate pin 9 is long, that is, the entire length of the bush 13 is 10 mm.

As shown in FIG. 4, the projections 14
3b, the upper and lower width H of the hem is 0.2
The projection 14 is formed with a curvature surface having a radius of 0.02 mm at the apex 14 a of the projection 14.

With the above structure, the bush 13 is located in the step 15 of the locating portion 9a of the locating pin 9 and can move up and down to some extent and wraps around the step 15. For example, the bush 13 always keeps the locating portion 9a of the locating pin 9 and the floor panel 3
Between the locating pin 9, which is a metal material, and the engaging hole 10 of the floor panel 3, which is also a metal material. Is prevented.

Further, since the bush 13 has a large frictional resistance, even if the bush 13 does not have the projection 14, the bush 13 can hold the rubbing noise preventing means 12 and reliably prevent the bush 13 from falling off from the locating pin 9. If the rubbing noise prevention means 12 is provided, the rubbing noise prevention means 12 can be engaged with the projection 14 of the bush 13 to more reliably hold the rubbing noise prevention means 12.

Even if there is a slight error in the diameter of the bush 13 and the rubbing noise preventing means 12, the bushing 13 and the rubbing noise preventing means 12 engage with any of the intermittently formed projections 14, 14,. The prevention means 12 can be held.

Since the bush 13 itself is held by the step 15 which is recessed on the peripheral surface of the locating portion 9a of the locating pin 9, the rubbing noise preventing means 12 can be held more reliably.

[0039]

According to the present invention, the effect of the first aspect of the present invention is that the bush encloses the locating portion of the locating pin, so that the bushing is surely provided between the locating portion of the locating pin and the engaging hole of the floor panel. , The occurrence of rubbing noise between the locate pin and the engagement hole of the floor panel is prevented.

Further, since the bush holds the rubbing noise preventing means, it is possible to reliably prevent the bush from falling off from the locating pin.

The effect of the second aspect of the invention is that, in addition to the effect of the first aspect, the rubbing noise prevention means can be engaged with the projection of the bush, and the rubbing noise prevention means can be more reliably held. Become.

According to the third aspect of the present invention, in addition to the effect of the second aspect, even if there is some error in the diameter of the bush and the rubbing noise preventing means, any of the intermittently formed protrusions can be used. Since the crab is engaged, the rubbing noise prevention means can be held more reliably.

According to the fourth aspect of the present invention, in addition to the effects of any one of the first to third aspects, the bush itself is held by a step formed in the peripheral surface of the locating portion of the locating pin. Therefore, it is possible to more reliably hold the rubbing noise prevention means.

[Brief description of the drawings]

FIG. 1 is a side view showing an automobile seat slide device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line SA-SA of FIG. 1;

FIG. 3 is a front view of the bush shown in FIGS. 1 and 2;

FIG. 4 is an enlarged view of a main part enclosed in FIG. 3;

FIG. 5 is a side view corresponding to FIG. 1 of a conventional example.

FIG. 6 is a perspective view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automotive seat 2 Movable rail 3 Floor panel 4 Concave part 5 Bracket 8 Fixed rail 9 Locate pin 9a Locate part 10 Engagement hole 11 Opening 12 Anti-scratch means 13 Bush 14 Projection 15 Step

Claims (4)

[Claims] 1. A pair of left and right fixed rails fixed to a floor panel and a pair of left and right movable rails fixed to a seat are slidably combined with each other, and the fixed rails are supported by the fixed rails. And a locating pin engaged with the engaging hole of the floor panel, and rubbing noise preventing means for preventing contact between the engaging hole of the floor panel and the locating pin is provided on a peripheral surface of a locating portion of the locating pin. An automobile seat slide device according to claim 1, wherein the locating portion of the locating pin is supported so as to be wrapped by a bush made of a synthetic resin material. 2. The seat slide apparatus for an automobile according to claim 1, wherein a projection for holding the rubbing noise preventing means is formed on a peripheral surface of the bush. . 3. The vehicle seat slide device according to claim 2, wherein the protrusion of the bush is formed intermittently in a longitudinal direction of the locating pin. 4. The vehicle seat slide device according to claim 1, wherein a step portion capable of holding the bush is formed in a recess on a peripheral surface of a locate portion of the locate pin. An automobile seat slide device, comprising: