JP2741572B2 - Tiltable door roller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilting door pulley mounted on a lower frame of a sliding door sliding door.

[0002]

2. Description of the Related Art In general, when a sliding door is locked, the sliding door is pulled in the indoor and outdoor directions. To facilitate the pulling of the sliding door, the roller can be tilted in a direction perpendicular to the rotation direction. Known tiltable door carts are known.

[0003] As this tilting door car, there is Japanese Utility Model Publication No. 59-11.
As shown in JP-A-176-176, an inner frame provided with a roller is fitted into an outer frame, and the outer frame is provided in the mounting support frame so as to be tiltable in a direction orthogonal to the roller rotation direction. A spring member is provided between the inner frame and the outer frame. When the door is tilted in a direction perpendicular to the direction and the sliding door is released, the inner frame and the outer frame return to the original state by the spring member.

[0004]

The mounting support frame of such a tiltable door roller has a substantially groove shape formed by a pair of side plates and a cover plate, and the outer frame is mounted in the mounting support frame. The inclination angle of the roller) is determined by the distance between one side plate of the mounting support frame and one outer surface of the outer frame in a direction orthogonal to the roller rotation direction. Need to be larger.

On the other hand, a dimension (hereinafter referred to as a width) of the outer frame in a direction orthogonal to the roller rotation direction requires a certain size for mounting a roller and the like. In order to increase the distance, the distance between the pair of side plates of the mounting support frame, that is, the width of the mounting support frame must be increased.

[0006] For this reason, if the inclination angle of the roller is increased, the width of the mounting support frame is increased, the overall width of the tiltable door wheel is increased, and the lower frame of the sliding door shoji is also increased.

It is to be noted that if the vertical dimension of the outer surface of the outer frame and the side plate of the mounting support frame is reduced, the inclination angle of the roller can be increased without increasing the distance, but the other outer surface of the outer frame is mounted. Since the outer frame is supported by being pressed against the other side plate of the support frame, if the vertical overlapping dimension between the outer surface of the outer frame and the side plate of the mounting support frame is reduced as described above, the support strength of the outer frame is reduced. .

[0008] Therefore, an object of the present invention is to provide a tilting door car capable of solving the above-mentioned problems.

[0009]

Means for Solving the Problems Opposing side plates 22, 2
2 and the upper plate 23 form a downward U-shape having a predetermined width and length, and a support protrusion 14a is formed on one side of the upper plate 12 in the width direction.
And a roller 10 between the opposed side plates 22, 22.
Door frame 11 rotatably supported by a first vertical plate 30 having a small vertical dimension, a second vertical plate 31 having a large vertical dimension, and an upper plate 3
2 has a mounting support frame 12 formed as a groove having a predetermined width and length wider than the door wheel frame 11, and the door wheel frame 11 is inserted into the mounting support frame 12 so that the support protrusion 14 a is an upper plate. Abuts against the first vertical plate 30 of the door 23 and the door frame 1
A tiltable door roller provided with a spring 43 for pressing one of the side plates 22 against the second vertical plate 31 of the mounting support frame 12.

[0010]

[Operation] Since the door frame 11 is inclined toward the first vertical plate 30 having a small vertical dimension with respect to the mounting support frame 12, the door frame 11 is located between the other side plate 22 of the door frame 11 and the first vertical plate 30. The tilting angle can be increased even if the distance is small.
A force acting on the vertical plate 31 acts on one side plate 2 of the door frame 11.
2 is in contact with a second vertical plate 31 having a large vertical dimension,
Are supported in a substantially vertical posture, and the vertical dimension of the second vertical plate 31 is large, so that the vertical overlapping dimension is large, and the supporting strength of the door frame 11 is large.

[0011]

[Embodiment] As shown in FIG. 1, a lower frame 2 constituting a sliding door shoji 1 is formed by integrally connecting a vertical plate 3 on one side and a vertical plate 4 on the other side with an upper connecting plate 5 and a lower connecting plate 6. The tiltable door wheel A is inserted into the hollow portion 2a from the opening 7 formed in the lower connecting plate 6, and is attached. The sliding door shoji 1 can run along the rail 9 of the lower frame 8, and the lower frame The other vertical plate 4 on the other side is bent in a stepped shape, and the lower end portion 4a is closer to the outdoor side than the upper end portion 4b, and the downward recess 2b of the lower frame 2 is wider than the hollow portion 2a.

As shown in FIG. 1, the tiltable door roller A includes a door roller frame 11 supporting a roller 10 and an attachment support frame 12, and the door roller frame 11 has an inner frame 13 and an outer frame as shown in FIG. 14.

As shown in FIG. 2, the inner frame 13 has a pair of side plates 15 and 15 and a connecting plate 16 and has a substantially U-shape in plan view. The pair of side plates 15 and 15 has an end portion 15a and an intermediate portion 15b. The intermediate portion 15b is bent by the end portion 15c and the other end portion 15c so as to protrude in a substantially U-shape in plan view from the one end portion 15b and the other end portion 15c.
The interval (that is, the width) of the intermediate portion 15 is wide at the middle portion in the longitudinal direction and narrow at both end portions in the longitudinal direction. The top and bottom dimensions of the slope 17 become shorter.
A projection 18 is formed on a part of the roller 10 between the pair of intermediate portions 15b, 15b.
9 and is rotatably supported by a pair of other end shift portions 15c, 1c.
5c is connected to the connecting pin 20, and a pair of
A slanted long hole 21 is formed in a and 15a.

As shown in FIG. 2, the outer frame 14 has a long downward U-shape having a predetermined width formed by a pair of side plates 22, 22 and an upper plate 23. The corner portion is bent upward in a U-shape to form a support protrusion 14a near one end in the width direction. One end connecting block 24 and the other end connecting block are provided at one end and the other end in the longitudinal direction of the pair of side plates 22, 22. 2
5 are fitted and mounted to form an inner frame mounting cavity into which the inner frame 13 is fitted.

A substantially downward U-shaped notch 26 opened at the lower end surface of the pair of side plates 22 is formed at a longitudinally intermediate portion thereof, and the other end of the notch 26 near the other end in the longitudinal direction becomes a slope 27, and FIG. When the inner frame 13 is fitted and mounted in the inner frame mounting cavity as shown in FIG.
And the projection 18 is in contact with the slope 27, and
a and the other end shift portion 15c contact the inner surface of the side plate 22 so that the inner frame 1
3 can be moved in the longitudinal direction and the vertical direction with respect to the outer frame 14.

A support pin 28 attached between the pair of side plates 22 of the outer frame 14 is a pair of side plates 1 of the inner frame 13.
Elongated holes 21 formed in the one end portion 15a in 5, 5
3 and 4, the inner frame 13 is attached to the outer frame 14 so as to be movable in the longitudinal direction and the vertical direction, and the height adjusting screw 29 screwed to the one end connecting block 24. Is pressed against the connecting plate 16 of the inner frame 13, the inner frame 13 moves in the longitudinal direction along the slope 17 of the outer frame 14, and the inner frame 13 moves downward. The height of the sliding door shoji 1 can be adjusted by adjusting the height of the sliding door 10 with respect to the outer frame 14.

The mounting support frame 12 includes a first vertical plate 30 and a second vertical plate 30.
The first vertical plate 30 has a vertical dimension smaller than the vertical dimension of the second vertical plate 31, and the vertical dimension of the first vertical plate 30 is smaller than the vertical dimension of the second vertical plate 31. Board 32
5 and 6, a plurality of portions spaced apart in the longitudinal direction at the corners are punched with a punch or the like to form an inward support portion 33.
As shown in FIG. 5, the support projection 14a of the outer frame 14 is in contact with the upper plate 32 and the inward support 33.

The first vertical plate 30 is formed with a cutout portion 34 facing the embossing projection 18 of the inner frame 13 and a cutout portion 35 facing the support pin 28.
A protruding piece 36 is integrally provided at the other end in the longitudinal direction.

The second vertical plate 31 is formed with a slanted long hole 39 facing the pin 19 and a hole 38 facing the support pin 28, and at the lower end of the other end of the second vertical plate 31 in the longitudinal direction. Has a mounting piece 39 integrally provided.

One end in the longitudinal direction of a spring pin 40 is attached to both ends of the second vertical plate 31 in the longitudinal direction, and this spring pin 40 is attached to the other side plate 22 of the outer frame 14 as shown in FIG. Through one end and the other end connecting block 2
4 and 25, and a spring 43 is inserted between the head 42 of the spring pin 40 and the other side plate 22 of the outer frame 14.
The outer frame 14 is urged by the spring 43 toward the second vertical plate 31 of the mounting support frame 12 so as to come into contact with the projecting projection 44 of the second vertical plate 31. When the projection 18 is not formed on the inner frame 13, the outer frame 14 is not used.
The other side plate 22 may be directly pressed against the second vertical plate 31.

Next, the operation of attaching the tiltable door wheel A to the lower frame 2 will be described. As shown in FIG. 7, openings 7 are respectively formed near both ends in the longitudinal direction of the lower connecting plate 6 of the lower frame 2. The opening 7 has a main opening 7a slightly larger than the upper plate 32 of the mounting support frame 12, and a positioning slightly larger than the projecting piece 36 of the first vertical plate 30 formed at one longitudinal end of the main opening 7a. The mounting support frame 12 is inserted into the opening 7, the mounting piece 39 abuts on the lower connecting plate 36 on the lower surface, and the mounting piece 39 is formed. Is screwed to the lower connecting plate 6.

As described above, the positioning notch 7 of the opening 7
The first vertical plate 30 can be mounted so as to be on the outdoor side by the protrusion b of the mounting support frame 12 and the right and left tiltable door wheel of the right and left side can be correctly mounted.

Next, the tilting operation of the roller 10 will be described. When the sliding door shoji 1 is closed as shown in FIG. 1 (in a state in which the sliding door shoji 1 is not pulled), the weight of the sliding door shoji 1 is changed to a supporting projection of the upper plate 32 of the mounting support frame 12 and the outer frame 14 as shown in FIG. 14
a, the inner frame 13 and the roller 10 support the rail 9.

Since the support projection 14a is shifted to one side in the width direction (the first vertical plate 30 side) from the support point of the load F on the roller 10, a tilting moment in the direction of arrow a acts on the outer frame 14. And the other side plate 22 of the outer frame 14 is the second vertical plate 3
As a result, the roller 10 is brought into a substantially vertical posture.
At this time, the support protrusion 14 a contacts the inward support 33 of the mounting support frame 12.

When the sliding door shoji 1 is pulled, the mounting support frame 12 moves to the indoor side together with the lower frame 2, so that the outer frame 14 is supported by the support projection 14a as a fulcrum and against the spring 43 in FIG.
As shown by, the mounting support frame 12 is tilted oppositely, but at this time, the vertical dimension of the first vertical plate 30 of the mounting support frame 12 is small, and the overlapping dimension with the one side plate 22 of the outer frame 14 is small. Even if the distance S between them is small, the inclination angle becomes large, and the roller 10 can be inclined at a large angle in a direction orthogonal to the rotation direction. In the above embodiment, the door frame 11 is composed of the inner frame 13 and the outer frame 14.
Alternatively, the roller 10 may be supported between the pair of side plates 22 of the outer frame 14 only.

[0026]

The door frame 11 is inclined with respect to the mounting support frame 12 toward the first vertical plate 30 having a small vertical dimension.
The tilt angle can be increased even if the distance between the other side plate 22 of the door frame 11 and the first vertical plate 30 is small, and the door frame 11 is supported by the second vertical plate 31 with the support frame protrusion 14a as a fulcrum due to the weight of the sliding door shoji. Is applied, and one side plate 22 of the door wheel frame 11 comes into contact with the second vertical plate 31 having a large vertical dimension so that the roller 1
0 is supported in a substantially vertical posture, and the vertical dimension of the second vertical plate 31 is large, so that the vertical overlapping dimension is large, and the supporting strength of the door frame 11 is large. Therefore, the inclination angle of the roller 10 can be increased, the strength of supporting the door frame 11 can be increased, and the width of the mounting support frame 12 can be reduced to reduce the overall width.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a sliding door shoji and a lower frame portion.

FIG. 2 is an exploded perspective view of the tiltable door wheel.

FIG. 3 is a front view of the tiltable door wheel in an assembled state.

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a right side view of FIG. 3;

FIG. 6 is a left side view of FIG. 3;

FIG. 7 is a schematic perspective view of a mounted state of the tiltable door wheel.

[Description of Signs] 1 ... sliding door shoji, 2 ... lower frame, 9 ... rail, 10 ... roller,
11 ... door frame, 12 ... mounting support frame, 13 ... inner frame 14 ... outer frame, 14a ... support protrusion, 22 ... side plate, 23 ... upper plate, 30
... 1st vertical board, 31 ... 2nd vertical board, 32 ... upper board, 43 ... spring.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shujiro Yamamoto No. 12 in Mikitokuno-cho, Higashi-Osaka-shi, Osaka Shinkansai Bearing Co., Ltd.

Claims (1)

(57) [Claims] An upper plate 23 has a downward U-shape having a predetermined width and length, and has a supporting projection 14a on one side in the width direction of the upper plate 23. A door frame 11 rotatably supporting the roller 10 between the opposing side plates 22; a first vertical plate 30 having a small vertical dimension and a second vertical plate 30 having a large vertical dimension.
A vertical support plate 31 and an upper plate 32 are provided with a mounting support frame 12 which is a groove having a predetermined width and length wider than the door wheel frame 11, and the door wheel frame 11 is inserted and supported in the mounting support frame 12. A spring 43 is provided that abuts the projection 14a near the first vertical plate 30 of the upper plate 23 and presses and urges one side plate 22 of the door frame 11 against the second vertical plate 31 of the mounting support frame 12. A tilting door roller that is a feature.