JPH08276743A - Support roller for slide door - Google Patents

Abstract

PURPOSE: To prevent creep deformation of a skin so that durability can be improved, by positioning a small thickness part of the roller skin in a receiving surface in a door closed condition and positioning a large thickness part of the roller skin in the receiving surface in a door unclosed condition. CONSTITUTION: In a slide door D, a perpendicular direction angle of the door is changed in a closed/unclosed condition, to change also an attitude of a support roller 1A in accordance with this angle change, and in a small/large thickness part 41, 42 of a skin 4 formed in a roller peripheral surface, a door load is supported by positioning the small/large thickness part 41, 42 in a door closed/ unclosed condition respectively in a receiving surface 61. Accordingly, generating a problem, such as distortion of an external shape of the support roller 1A die to creep deformation in the door closed condition, is prevented. In the door unclosed condition, sufficient durability against wearing according to rolling the support roller 1A is displayed, also to effectively impede also generation of a metal sound, by the large thickness part 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support roller for a slide door, and more particularly to an improvement in the structure of the support roller provided with a synthetic resin skin on the outer circumference of the roller in order to reduce the rolling noise when the door is opened and closed.

[0002]

2. Description of the Related Art In recent years, the use of van type vehicles as RVs (recreation vehicles) is expanding, and it is necessary to guarantee a comfortable living space in the latter half of the vehicle, which was conventionally used as a luggage compartment. A side entrance / exit that is opened / closed by a slide door is used for getting in / out of the latter half of the vehicle. As shown in FIG. 7, the slide door D has guide rollers 2A-2C provided at intermediate positions on the upper and lower edges of the door body. Opening and closing is guided by rolling in the guide rails 5A to 5C of the above, and as shown in FIGS. 8 and 9, while the supporting rollers 1B and 1A provided at the intermediate position and the lower edge receive the load of the door body. , Guide rail 5B or step under panel 6
Rolling on the receiving surfaces 51, 61 of the. Therefore, if the supporting rollers 1A and 1B are made of a metal material, a metallic noise is generated between the supporting rollers 1A and 1B and a metallic receiving surface during rolling due to vehicle vibration during driving or door opening / closing, and quiet habitability cannot be obtained. .

Therefore, as shown in FIG. 10, the outer circumference of a metal ball bearing 3'is covered with an outer cover 4'made of a synthetic resin having a predetermined thickness to prevent metallic noise from being generated between the ball bearing 3'and the receiving surface. A support roller 1'is proposed.

[0004]

However, in the above-mentioned conventional supporting roller 1 ', as shown in FIG. 11, if the outer cover 4'made of synthetic resin is thickened as a whole, the durability against abrasion is improved, but the creep characteristics are improved. However, there is a problem that when a load is applied for a long time, the roller shape is distorted due to creep deformation and backlash during rolling causes noise to occur.
On the other hand, if the synthetic resin outer skin 4'is made thin, deformation due to creep hardly occurs, but durability is reduced. Therefore, it has been difficult to achieve both durability and creep characteristics with the conventional structure.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a support roller for a slide door that achieves both improved durability and creep characteristics.

[0006]

The present invention relates to a slide door D of a van type vehicle which is opened to the outside of the vehicle from a state in which a doorway on the side of the vehicle is closed, and a swing amount Y of the upper edge of the door body. Is smaller than the swing-out amount X of the lower edge of the door body, the sliding door D in which the vertical angles θ1 and θ2 of the door body change between the closed state and the non-closed state is rolled on the receiving surface 61 provided on the vehicle body. In the support roller 1A of the slide door D that supports the inner ring 3
1 and an outer ring 32 rotatably mounted on the inner ring 31 via balls 33, and a groove 321 is formed at the center of the outer circumference of the outer ring 32. The outer cover 4 made of synthetic resin is integrally molded to form a thin portion 41 and a thick portion 42 on the outer cover 4, and the slide door D
The thin portion 41 of the outer cover 4 is positioned on the receiving surface 61 in the closed state, and the thick portion 42 of the outer cover 4 is positioned on the receiving surface 61 when the slide door D is not closed. It was done.

[0007]

In the above structure, the vertical angle of the door body of the slide door D changes between the closed state and the non-closed state, and the posture of the support roller 1A also changes accordingly, so that the slide door D is formed on the outer peripheral surface of the roller. The thin portion 41 and the thick portion 42 of the outer cover 4 are
The thin portion 41 is positioned on the receiving surface 61 in the door closed state and the thick portion 42 is positioned in the door non-closed state to support the door load. Since the sliding door D is in the closed state for a very long time, the door load is applied to the stationary support roller 1A for a long time. Here, in the door closed state, since the thin portion 41 of the outer cover 4 is located on the receiving surface 61 to support the door load, the support roller 1A is supported by creep deformation.
There is no problem that the outer shape of is distorted. On the other hand, when the door is not closed, the thick portion 42 of the outer cover 4 is positioned on the receiving surface 61 to support the load of the door, and rolls on the receiving surface 61 in accordance with the opening / closing operation. The thick portion 42 exhibits sufficient durability against wear due to this rolling, and the outer skin 4 generates metal noise.
It is effectively prevented by the thick portion 42 of the.

[0008]

1 is a vertical sectional view of a slide door D having a support roller 1A of the present invention provided at its lower edge. The same structure can be adopted for the support roller 1B (see FIG. 8) provided at the door intermediate position. In the figure, a stay 71 is provided at the upper edge of the door body of the slide door D toward the inside of the vehicle, and a guide roller 2C is rotatably supported in a horizontal posture on a support shaft 12 standing on the tip of the stay 71. . This guide roller 2C is located in an upper guide rail 5C having an inverted U-shaped cross section that opens downward. On the other hand, a stay 72 is provided at the lower edge of the door body of the slide door D in the inward direction of the vehicle, and a guide roller 2A rotatably supported in a horizontal posture by a spindle 13 is provided at the tip of the stay 72. It is located inside the lower guide rail 5A.

A portion of the tip of the stay 72 is bent downward, and the support roller 1A is provided in a posture perpendicular to the support shaft 11 provided on the stay 72.
Is rotatably provided. The detailed structure of the support roller 1A is shown in FIG. In the figure, the support roller 1A is composed of a metal ball bearing 3 and a synthetic resin outer cover 4 integrally formed on the outer periphery thereof. The ball bearing 3 has an inner ring 31 and an outer ring 32 that are concentrically arranged.
1 is fixed to the support shaft 11, and the outer ring 32 is rotatably mounted on the outer periphery of the inner ring 31 by balls 33 interposed at a plurality of positions. A groove 321 is formed at the center of the outer circumference of the outer ring 32. Outer ring 3
The outer skin 4 integrally formed on the outer periphery of the outer peripheral surface 2 of the outer ring 32 has a thin-walled portion 4 whose central portion in the width direction corresponding to the concave groove 321 of the outer ring 32 has both side edges.
The thick portion 42 is thicker than the thickness of 1.

In the door closed state shown by the solid line in FIG. 1, the door angle (vertical direction angle) with respect to the vertical line is as small as θ1, and in this state, the above-mentioned support provided on the support shaft 11 at the tip of the stay 72 bent obliquely downward. The support roller 1A is positioned in an inclined posture with respect to the receiving surface 61 of the step under panel 6. This is schematically shown in FIG. 3, and an enlarged cross section of the lower portion of the supporting roller 1A at this time is shown in FIG. As can be seen from the figure, since the thin portion 41 of the outer cover 4 of the support roller 1A is located on the receiving surface 61 when the door is closed, the creep deformation of the outer cover 4 is suppressed to be sufficiently small even if a door load is applied for a long time. To be

The sliding door D is opened by swinging the door body rearward and outward along the guide rails 5A and 5C (FIG. 1). Normally, the swinging amount Y of the upper edge of the door body is Y. Is smaller than the swing-out amount X of the lower edge of the door body. This is to suppress the amount of protrusion of the stay 71 in the vehicle interior direction. Therefore, the vertical angle θ2 of the door body in the non-closed state is larger than the angle θ1 in the closed state, as shown by the chain line in the figure. Due to the change in the inclination angle of the door body, the supporting roller 1A is moved to the receiving surface 6 of the step under panel 6.
Upright posture for 1. This is schematically shown in FIG. 5, and an enlarged cross section of the lower portion of the supporting roller 1A at this time is shown in FIG. As is known from the figure, in the state where the door is not closed, in the support roller 1A, the central thick portion 42 of the outer cover 4 is located on the receiving surface 61. Therefore, the outer skin 4 has the receiving surface 61.
The thick-walled portion 42 effectively prevents generation of abnormal noise while having durability against abrasion when rolling over.

[0012]

As described above, according to the supporting roller of the sliding door of the present invention, the thin portion and the thick portion are formed in the outer skin of the roller, and the thin portion of the outer skin is positioned on the receiving surface when the door is closed. In addition, since the thick part of the outer skin is positioned on the receiving surface when the door is not closed,
This is a combination of prevention of creep deformation of the outer skin and improvement of durability.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a slide door provided in a vehicle side opening having a support roller of the present invention.

FIG. 2 is an overall sectional view of a supporting roller showing an embodiment of the present invention.

FIG. 3 is a diagram schematically showing a positional relationship between a slide door and a support roller.

FIG. 4 is a cross-sectional view of a lower portion of a supporting roller, which is taken along line A of FIG.
It is an expanded sectional view of a part.

FIG. 5 is a diagram schematically showing a positional relationship between a slide door and a support roller.

6 is a sectional view of a lower portion of a supporting roller, which is taken along line B in FIG.
It is an expanded sectional view of a part.

FIG. 7 is an exploded perspective view of a slide door provided in a vehicle side opening.

FIG. 8 is a vertical sectional view of a center guide rail portion.

FIG. 9 is a vertical cross-sectional view of an underguide rail portion.

FIG. 10 is an overall sectional view of a conventional support roller.

FIG. 11 is a graph showing the relationship between the outer skin thickness and the creep characteristics and durability.

[Explanation of symbols]

 1A Support roller 11 Support shaft 3 Ball bearing 31 Inner ring 32 Outer ring 33 Ball 4 Outer skin 41 Thin portion 42 Thick portion 6 Step under panel 61 Receiving surface D Sliding door

Claims (1)

[Claims] 1. A sliding door for a van-type vehicle, which is opened to the outside of the vehicle from a state in which a door on the side of the vehicle is closed, wherein the amount of the upper edge of the door body is greater than the amount of the lower edge of the door body. In the support roller of the slide door that supports the slide door whose vertical angle of the door body changes in the closed state and the non-closed state due to being small while rolling on the receiving surface provided in the vehicle body, the support roller is It is composed of an inner ring and an outer ring rotatably attached to the inner ring via balls, and a groove is formed in the outer ring central part of the outer ring, and a synthetic resin outer cover is integrally formed on the outer ring of the outer ring including the groove. To form a thin portion and a thick portion on the outer skin so that the thin portion of the outer skin is positioned on the receiving surface when the slide door is closed, and the thick portion of the outer skin is formed when the slide door is not closed. Located on the receiving surface A support roller for a sliding door, which is characterized in that