JP2838526B2 - Rail guide roller - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a rail guide roller used for a slide type sunroof of an automobile.

2. Description of the Related Art In a conventional rail guide roller, a support pin is fixed to a support plate provided on a moving body that moves along the longitudinal direction of a guide rail, and a single rolling element is rotatably provided on the support pin.

However, in the conventional rail guide roller, the rolling element is slidably mounted in the guide rail, and there is a gap between the rolling element and the guide rail. Movement of the rolling element in the axial direction of the support pin or in the radial direction of the rolling element with respect to the rail causes rattling. There is a risk of generating noise due to gaps, and the rolling element has a large friction coefficient,
Large frictional resistance occurs between the rolling element and the guide rail,
The rolling element cannot move smoothly with respect to the guide rail, and the rolling element is worn by long-term use, and the sliding of the rolling element may wear the guide rail.

SUMMARY OF THE INVENTION An object of the present invention is to address the above-described problems, and to engage a rolling element with a guide rail so that the rolling element does not move in the support shaft direction, and the fluororesin that covers the outer surface of the elastic body is formed. The elastic body presses the fluororesin toward the guide rail while contacting the guide rail, thereby eliminating the gap between the rolling element and the guide rail, and reliably preventing the rolling element from rattling against the guide rail. No noise may be generated due to the gap between the rolling element and the guide rail when the rolling element moves with respect to the guide rail, and the friction coefficient between the rolling element and the guide rail is large because the friction coefficient of the fluorine resin is small. An object of the present invention is to provide a rail guide roller in which a rolling element can smoothly move with respect to a guide rail without occurrence.

Means for Solving the Problems A rail guide roller of the present invention is provided with a small-diameter portion over the entire outer peripheral surface of a rolling element, an elastic body coated with a fluorine resin on the outer surface is provided only on the small-diameter portion, and a guide is provided. A groove is provided in the protrusion of the rail to expose the roller body base material that comes into contact with the inside and outside in the axial direction.

When the protrusion of the guide rail is engaged with the groove of the rolling element formed by exposing the roller body base material, the groove contacts the inside and outside of the projection of the guide rail, and the rolling element moves in the axial direction of the support shaft. , The fluororesin provided on the small diameter portion of the rolling element comes into contact with the guide rail, and the elastic body presses the fluororesin toward the guide rail, so that there is a gap between the rolling element and the guide rail. There is no gap and the rolling elements do not shift in the radial direction.

Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention, in which 21 is a rail guide roller, and a rolling element 22 of the rail guide roller 21 is shown.
A small-diameter portion formed of an annular groove 23 is formed on the outer peripheral surface near one end face 22a of the rolling element 22. ing. An elastic body 25 made of an elastic rubber, an elastic synthetic resin, or the like is provided outside the rolling element 22 at a position corresponding to the inside of the annular groove 23, and the outer peripheral surface of the elastic body 25 is covered with a tetrafluoroethylene resin 26. Have been.

The groove 24 and the rolling element of the rolling element 22 of the rail guide roller 21
A contact portion 27 is formed between the other end surface 22b of the rail 22 and the support pin 5 is inserted into the rolling element 22 of the rail guide roller 21, and the rail guide roller 21 is rotatably supported by the support pin 5. Have been.

A flange 6 is formed at one end of the support pin 5 inserted into the rolling element 2 of the rail guide roller 21, and a support shaft 7 is formed at the other end of the support pin 5. The support pin 5 is rotatably provided on the support pin 5. The inside of the rolling element 2 has a flange 6 of a support pin 5.
Is formed in the one end face 22a of the rolling element 2 so as to open, and an insertion hole 9 through which the support pin 5 is inserted is formed in the inner end face 8a of the rolling element 2 at the other end face 22b of the rolling element 2. It is provided with an opening.

FIG. 3 shows an example of use of the rail guide roller of the present invention. An opening 14 is provided in the roof panel 13 of the car body.
A slide panel 15 serving as a moving body is provided in the opening 14 of the roof panel 13 so as to be movable in the front-rear direction of the vehicle body.

As shown in FIG. 4, the roof panel 13 is provided with a plurality of guide rails 16 and 16 formed of a plurality of elongated channels parallel to each other and having a C-shaped cross section.
6 are formed with locking projections 16a, 16a which are bent in the vertical direction, respectively, and a plurality of support plates 17, 17 are provided on the lower surface of the slide panel 15 at positions corresponding to the guide rails 16.
7, a support pin 5 is fixedly mounted, a rail guide roller 1 rotatably provided on the support pin 5 is slidably engaged with a guide rail 16, and a slide panel 15 is connected to the guide rail 16 via the rail guide roller 1. Are movable in the longitudinal direction.

The attachment of the rail guide roller 21 to the support plate 17
As shown in the figure, a support shaft 7 formed at the other end of the support pin 5
The shaft insertion hole of the support plate 17 provided on the lower surface of the slide panel 15
18 and the contacting portion 27 of the rolling element 22
After contact with the support pin 17, the end of the support shaft 7 protruding from the other side surface 17 b of the support plate 17 is crushed to form a caulked portion 19, and the support pin 5
Is fixed to the support plate 17 by caulking.

Next, after aligning the fitting groove 24 formed on the outer peripheral surface near the other end surface 22b of the rolling element 22 with the locking protrusion 16a of the guide rail 16, the rail guide roller 21 is fitted from the side where the guide rail 16 opens. Combine.

Then, by moving the rolling element 22 of the rail guide roller 21 along the longitudinal direction of the guide rail 16, the locking projection 16a of the guide rail 16 is fitted into the fitting groove 24 of the rolling element 22, and The outer peripheral surface of the polytetrafluoroethylene resin 26 covering the surface of the external elastic body 25 in the annular concave groove 23 formed on the outer peripheral surface comes into contact with the sliding surfaces 20 located above and below the guide rail 16, and The body 25 presses the ethylene tetrafluoride resin 26 toward the sliding surface 20 of the guide rail 16, and the rail guide roller
The inner surface of the fitting groove 24 located near the one end surface 22a of the rolling element 22 and the inner surface facing the fitting groove 24 of the contact portion 27 engages with both side surfaces of the locking projection 16a of the guide rail 16, The support plate 17 is movably attached along the longitudinal direction of the guide rail 16 via the rail guide roller 21.

 Next, the operation of the first embodiment will be described.

When the slide panel 15 is moved in the front-rear direction of the vehicle body from the interior of the vehicle, the tetrafluoroethylene resin 26 covering the outer surface of the outer elastic body 25 in the annular groove 23 on the outer peripheral surface of the rolling element 22 is attached to the guide rail 16. While being engaged, the rolling elements 22 of the rail guide roller 21 rotate with respect to the support pins 5 fixed to the support plate 17 on the lower surface of the slide panel 15, and the support plate 17 extends through the rail guide roller 21 to extend the guide rail 16. Move along the direction.

When the outer peripheral surface of the tetrafluoroethylene resin 26 contacts the sliding surface 20 of the guide rail 16, the rail guide roller 21 does not move in the radial direction of the rolling element 22, and The inner surface of the fitting groove 24 located near the one end surface 22a of the rolling element 22 and the inner surface facing the fitting groove 24 of the contact portion 27 engage with both side surfaces of the locking projection 16a of the guide rail 16. Thus, the rail guide roller 21 does not move in the axial direction of the support pin 5.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, a fitting groove 40 for fitting the locking projection 16a of the guide rail 16 is provided on the outer peripheral surface of the rolling element 39 of the rail guide roller 38, and a small diameter portion is formed at the bottom of the fitting groove 40. The elastic body 41 is provided only at the small diameter portion at the bottom of the fitting groove 40. The outer peripheral surface of the elastic body 41 is covered with a tetrafluoroethylene resin 42.

Further, a contact portion 43 is formed between the fitting groove 40 of the rolling element 39 of the rail guide roller 38 and the other end surface 39b of the rolling element 39,
The support pins 5 are inserted into the rolling elements 39 of the rail guide rollers 38 in the same manner as in the embodiment shown in FIG. 7, and the rail guide rollers 38 are rotatably supported by the support pins 5.

To attach the rail guide roller 38 to the support plate 17, the support pin 5 inserted through the rolling element 39 of the rail guide roller 38 is
As in the embodiment shown in FIG. 1, the slide panel 15 is fixed to the support plate 17 on the lower surface by caulking, and then,
As shown in FIG. 6, after aligning the fitting groove 40 formed on the outer peripheral surface of the rolling element 39 with the locking projection 16a of the guide rail 16, the rail guide roller 38 is moved from the side where the guide rail 16 is opened. Fit.

Thereafter, by moving the rolling element 39 of the rail guide roller 38 along the longitudinal direction of the guide rail 16, the locking projection 16a of the guide rail 16 is fitted into the fitting groove 40 of the rolling element 39, and The outer surface of the tetrafluoroethylene resin 42 covering the outer surface of the outer elastic body 41 in the fitting groove 40 is
The elastic body 41 comes in contact with the edge of the locking projection 16a.
The fluorinated ethylene resin 42 is pressed against the edge of the locking projection 16a of the guide rail 16, and the rolling element 39 of the rail guide roller 38 is pressed.
The inner surface of the fitting groove 40 located near the one end surface 39a of the guide rail 16 and the inner surface of the contact portion 43 facing the fitting groove 40 engage with both side surfaces of the locking projection 16a of the guide rail 16, and the support plate 17 is The guide rail 16 is movably mounted along the longitudinal direction of the guide rail 16 via a rail guide roller 38.

 Next, the operation of the second embodiment will be described.

When the slide panel 15 is moved in the front-rear direction of the vehicle body from the cabin of the automobile, the fitting groove 40 of the rolling element 39 is
While engaging with the locking projection 16a of the rail guide roller 38.
The rolling element 39 rotates with respect to the support pin 5 fixed to the support plate 17 on the lower surface of the slide panel 15, and the support plate 17 moves along the longitudinal direction of the guide rail 16 via the rail guide roller 38.

When the outer peripheral surface of the tetrafluoroethylene resin 42 at the bottom of the fitting groove 40 comes into contact with the edge of the locking projection 16 a of the guide rail 16, the rail guide roller 38 moves in the radial direction of the rolling element 39. Rail guide roller 38 without moving
The inner surface of the fitting groove 40 located near the one end surface 39 of the rolling element 39 and the inner surface facing the fitting groove 40 of the contact portion 43 are guide rails.
By engaging with both side surfaces of the 16 locking projections 16a, the rail guide roller 39 does not move in the axial direction of the support pin 5.

FIG. 7 shows a third embodiment of the present invention. A small-diameter portion formed of a notch groove 46 is formed at a corner between one end surface 45a of the rolling element 45 of the rail guide roller 44 and the outer peripheral surface, and an elastic body 47 is formed outside the rolling element 45 corresponding to the notch groove 46. Provided, elastic body
The outer peripheral surface of the roller 47 is coated with a tetrafluoroethylene resin 48, and a fitting groove 49 is formed on the outer peripheral surface near the other end surface 45 b of the rolling element 45, and the rolling groove 45 is fitted with the fitting groove 49 of the rolling element 45 of the rail guide roller 44. A contact portion 50 is formed between the other end surface 45b of the moving body 45 and the support pin 5 is inserted into the rolling member 45 of the rail guide roller 44 as in the embodiment shown in FIG. The roller 44 is rotatably supported by the support pin 5.

The rail guide roller 44 is attached to the support plate 17 by supporting the support pin 5 inserted through the rolling element 45 of the rail guide roller 44,
As in the embodiment shown in FIG. 1, the slide panel 15 is fixed to the support plate 17 on the lower surface by caulking, and then,
As shown in FIG. 8, a fitting groove 49 formed on the outer peripheral surface near the other end surface 45b of the rolling element 45 is engaged with the locking projection 16a of the guide rail 16.
Then, the rail guide roller 44 is fitted from the side where the guide rail 16 opens.

Thereafter, by moving the rolling element 45 of the rail guide roller 44 along the longitudinal direction of the guide rail 16, the locking projection 16a of the guide rail 16 is fitted into the fitting groove 49 of the rolling element 45, and The outer peripheral surface of the tetrafluoroethylene resin 48 covering the outer surface of the outer elastic body 47 in the notch groove 46 is
Contact the sliding surfaces 20 located above and below the
Presses the tetrafluoroethylene resin 48 toward the sliding surface 20 of the guide rail 16, and the inner surface of the fitting groove 49 and the contact portion 50 located near one end surface 45 a of the rolling element 45 of the rail guide roller 44. The inner side facing the insertion groove 49 is the locking projection 16 of the guide rail 16.
a, and the support plate 17 is
The guide rail 16 is movably mounted along the longitudinal direction of the guide rail 16.

 Next, the operation of the fifth embodiment will be described.

When the slide panel 15 is moved in the front-rear direction of the vehicle body from the cabin of the automobile, the tetrafluoroethylene resin 48 covering the outer surface of the elastic body 47 outside the notch groove 46 of the rolling element 45 is applied to the guide rail 16.
The rolling element 45 of the rail guide roller 44 rotates with respect to the support pin 5 fixed to the support plate 17 on the lower surface of the slide panel 15 while the support plate 17 is in contact with the guide rail 16 via the rail guide roller 44. Move along the longitudinal direction.

When the outer peripheral surface of the tetrafluoroethylene resin 48 comes into contact with the sliding surface 20 of the guide rail 16, the rail guide roller 44 does not move in the radial direction of the rolling element 45, and The inner surface of the fitting groove 49 located near the one end surface 45a of the rolling element 45 and the inner surface facing the fitting groove 49 of the contact portion 50 engage with both side surfaces of the locking projection 16a of the guide rail 16. Thus, the rail guide roller 44 does not move in the axial direction of the support pin 5.

Note that the rail guide roller of the present invention can be used for a window regulator that moves up and down a window glass that is a moving body of an automobile, or that moves a moving body along a guide rail.

Effect of the Invention As described above, according to the rail guide roller of the present invention, a small-diameter portion is provided over the entire outer peripheral surface of the rolling element,
An elastic body coated with a fluororesin on the outer surface is provided only on the small-diameter portion, and a groove that exposes the roller body base material that comes into contact with the inside and outside in the axial direction is provided on the protrusion of the guide rail, so that the rolling element can be used as a guide rail When the groove is in contact with the protrusion of the guide rail, the groove does not come into contact with the protrusion and the rolling element does not move in the axial direction of the support shaft. At the same time, the elastic body presses the fluororesin against the guide rail, and there is no gap between the rolling element and the guide rail, and the rolling element does not shift in the radial direction. As a result, there is no danger of generating noise due to the gap between the rolling element and the guide rail when the rolling element moves with respect to the guide rail, and the friction coefficient of the fluorine resin is small. The rolling element can be moved smoothly with respect to the guide rail without generating a large frictional resistance between the rolling element and the guide rail, and the fluorine resin is excellent in abrasion resistance. Wear of the guide rail due to sliding of the resin can be prevented.

[Brief description of the drawings]

1 is a cross-sectional view of a main part of a rail guide roller according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part showing a state where the rail guide roller of FIG. 1 is mounted on a guide rail. FIG. 3 is a perspective view of a slide-type sunroof automobile showing one use example of the present invention, FIG. 4 is a perspective view of a main part showing an arrangement state of a guide rail and a moving body in FIG. 3, and FIG. FIG. 6 is a sectional view of a main part of a rail guide roller according to a second embodiment of the present invention. FIG. 6 is a sectional view of a main part showing a state where the rail guide roller of FIG. 5 is mounted on a guide rail. FIG. 7 is a sectional view of a main part of a rail guide roller according to a third embodiment of the present invention, and FIG. 8 is a sectional view of a main part showing a state where the rail guide roller of FIG. 7 is mounted on a guide rail. 5 ... support pin, 6 ... flange, 7 ... support shaft part, 8 ...
... fitting part, 8a ... inner end face, 9 ... insertion hole, 13 ... roof panel, 14 ... opening, 15
... Slide panel, 16 ... Guide rail, 16a ... Locking protrusion, 17 ... Support plate, 17a ... One side, 17b ... Other side, 18 ... Shaft insertion hole, 19 ... 20
... sliding surface, 21 ... rail guide roller, 22 ... rolling element, 22a ... one end face, 22b ... other end face, 23 ... annular concave groove, 24 ... fitting groove, 25 ... elastic body, 26 ……
Ethylene tetrafluoride resin, 27 contact part, 38 rail guide roller, 39 rolling element, 39a one end face, 39b other end face, 40 fitting groove, 41 elastic body, 42 ... tetrafluoroethylene resin, 43 ... contact part, 44 ... rail guide roller, 45 ... rolling element, 45 ... one end face, 45b ... other end face, 46 ...
Notch groove, 47: elastic body, 48: tetrafluoroethylene resin, 49: fitting groove, 50: contact part.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F16C 13/00 F16C 29/04 B60J 7/02

Claims (1)

(57) [Claims] A small diameter portion is provided on the outer peripheral surface of the rolling element over the entire circumference, and an elastic body coated with a fluororesin on the outer surface is provided only on the small diameter portion. A rail guide roller provided with a groove that exposes a roller body substrate that comes into contact with the groove.