JPH04118485A - Pulley for folding door - Google Patents

Abstract

PURPOSE:To improve the running property of a folding door by a method in which while the distance between a pulley-body and the lower surface of a rail is provided, the inclination-suppressing wheel which is brought in contact with the upper surface of the rail and suppresses the inclination in the running direction of the folding door. CONSTITUTION:A covering folding door 10 is folded, and the supporting wheels 42, 44 of a pulley-body 18 is run and moved along an upper rail 4. When the force F1 which inclines the folding door in running direction acts thereon, the turning in the direction of an arrow R of the body 18 around a supporting wheel 42 as a center is suppressed by the suppressing force F2 generated by an inclination-suppressing wheel 46, and the inclination of the folding door is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a hanging wheel for a folding door used for movably suspending a folding door from an upper rail.

[Conventional technology]

Conventionally, in this type of hanging wheel for folding doors, for example, Figs.
As shown in the figure, support wheels 86 are provided on the suspension wheel main body 80 at intervals in the rail longitudinal direction for supporting the load of the folding door 84 by contacting the lower surface 82a within the upper rail 82. In this case, the support wheel 86 and the rail inner upper surface 82b
A gap d exists between them.

[Problem to be solved by the invention]

By the way, with this type of folding door, when it is folded and moved, the folding door tends to tilt in the traveling direction, but in this case, with the structure as described above, there is no gap between the support wheels and the inner upper surface of the rail. Because of this, the folding door was allowed to tilt in the running direction, and one of the supporting wheels came into contact with the inner upper surface of the rail and exerted a braking effect. For this reason, knocking and the like occurred and smooth running performance could not be obtained. In addition, this problem is
Theoretically, this can be easily solved by bringing the support wheels and the top surface of the rail closer together, but in reality, the distance between the support wheels and the top and bottom surfaces of the rail changes depending on the position due to factors such as mounting errors, so it is difficult to solve the problem smoothly. In order to obtain a running condition, it is unavoidable to secure a certain amount of clearance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hanging wheel for a folding door that can avoid non-king while maintaining the conventional gap between the support wheel and the inner upper surface of the rail, thereby improving running performance.

[Means to solve the problem]

This invention aims to achieve the above object (invented),
The feature is that a tilting prevention wheel is provided which has a distance from the lower surface of the rail and contacts the upper surface of the rail to prevent the folding door from tilting in the running direction.

[For production]

According to this invention, even if the folding door is about to fall in the travel direction when the folding door is moved in the folded state, the tilting prevention wheels contact the upper surface within the upper rail and the tilting is prevented.

In addition, the rotation of the support wheels and the tilt prevention wheels maintains smooth running without causing non-king or the like.

〔Example〕 1 to 6 show an embodiment of the present invention.

Figures 5 and 6 show examples of application to folding folding doors.
As shown in the figure, an upper rail 4 and a lower rail 6 are attached to the upper and lower surfaces of the folding door mounting frame 2, and the upper rail 4 and the lower rail 6 are foldably connected with a hinge 8. The folding door 10.12 is attached via a hanging wheel 14 and a lower runner (not shown) attached to its back side. Note that the hanging structures of the 12 folding folding doors are also omitted.

The hanging wheel 14 has a mounting member 16 fixed at one end to the upper end of the rear surface of the cover folding door 10 on the movable side, and is mounted to the other end, that is, the free end, of the mounting member 16 so as to be able to run on the upper rail 4. It is roughly composed of a suspension wheel body 18.

The mounting member 16 is composed of a fixing member 20 that is embedded and fixed in a hole in the folding door 10, and a connecting member 22 that is rotatably attached to the fixing member 20 at one end and can extend horizontally. The fixing member 20 includes a cup portion 24 and a mounting piece 26 integrally formed with the cup portion 24. Reference numeral 26a indicates a hole through which a fixing screw is inserted, and the connecting member 22 includes a connecting body 28 that is U-shaped in cross section and has a notch 28a on the tip side, and a link 30.3.
2 are provided, and the links 30 and 32 are each rotatably held in the cup portion 24 by support shafts 34 and 36.

The hanging wheel main body 18 has a connecting part 3 to which the connecting body 28 is attached, a hanging wheel holding plate 40 to which the connecting part 38 is attached so as to be able to adjust the position in the vertical direction, and a connecting part 38 that contacts the inner lower surface 4a of the upper rail 4. Support wheels 42 and 44 that support the load of the covered folding door 10, tilting prevention wheels 46 that contact the rail inner upper surface 4b and prevent the covered folding door 10 from falling in the traveling direction, and vertical adjustment of the hanging wheel holding plate 40 are performed. An adjustment screw 48 is provided.

The connecting portion 38 is provided with a substantially U-shaped connecting portion main body 50 and a nut member 54 that corresponds to a set screw 52 for integrating the connecting portion main body 28. The connecting portion main body 50 has an undulating surface 50a formed on its inner surface to prevent slippage, and an insertion hole 50b for a set screw 52 is formed approximately in the center. Moreover, holder parts 50c, 50c for holding the nut member 54 are formed on the outer surface side.

On the hanging wheel holding plate 40, an adjustment piece 56 to which the connecting portion 38 is attached is provided upright in the thickness direction of the folding door 10, and this adjustment piece 56 has a long adjustment hole 56a formed in the vertical direction. .

The connecting portion 38 is set by fitting the holder portions 50c, 50c into the adjustment slots 56a, and after fitting, the nut member 54 is installed between the holder portions 50c and 50c from the back side to prevent removal. . Further, a horizontal piece 58 is formed at the lower end of the hanging wheel holding plate 40, and a screw hole 58a for the adjustment screw 48 is formed in this horizontal piece 58.

By adjusting the connecting portion 38 with respect to the connecting body 28, the movement of the hanging wheel body 18 with respect to the upper rail 4 is adjusted in the width direction of the rail, and with the adjusting screw 48, adjustment is made in the vertical direction.

The supporting wheels 42, 44 each consist of a wheel body 60.62 and an axle 64.66 supporting the wheel body 60.62. The wheel bodies 60, 62 may have a bearing structure in which the outer ring portion is made of synthetic resin, for example. In this example, a protrusion 4a is formed in the upper rail 4 as the inner lower surface of the rail, and a corresponding wheel body 60.
Concave grooves 60a and 62a are provided on the outer periphery of 62 to fit with the protrusions 4a.
is formed. Each axle 64, 66 is inserted into the axle insertion hole 68 of the suspension wheel holding plate 40, and after the wheel body 60, 62 is inserted, both ends are caulked to prevent it from coming out. The support wheels 42 and 44 are arranged on the same horizontal plane so as to receive the load of the folding door 10 evenly.

The tilt prevention wheel 46, like the support wheels 42, 44, is composed of a wheel body 70 and an axle 72, and a groove 70a is formed on the outer periphery of the wheel body 70. Tilt prevention wheels 4
6 is attached so as to be shifted upwardly from the support wheels 42, 44 by a dimension V so as to be able to contact the protruding strip 4b as the inner upper surface of the upper rail 4. Note that the support wheels 42, 44 and the tilt prevention wheels 46 are arranged on the same vertical plane.

Note that the reference numeral 72 indicates a contact plate for the folding door 12 side, and in FIG. 2, the reference numeral 73 indicates a screw for fixing the upper rail 4.

According to the above configuration, as shown in FIG. 1, for example, when the folding door 10.12 is folded and moved, even if the force F1 that causes the folding door 10 to tilt backward in the traveling direction is applied, the suspension wheel main body 18 will not move. Rotation in the direction of arrow R about the support wheels 42 is prevented by the blocking force F by the tilting blocking wheels 46, and thereby the folding door 10 is also prevented from tilting.

Therefore, good rotation of the support wheels 42, 44 with respect to the inner lower surface of the rail and good rotation of the tilt prevention wheels 46 with respect to the inner inner surface of the rail are obtained, and stable running is always maintained.

In addition, in this example, the upper rail 4 and the support wheels 42, 44
Since the structure is such that no looseness occurs in the engagement between the wheels 46 and the tilting prevention wheels 46, the horizontal gap d shown in FIG.
, that is, concerns about braking action due to horizontal deviation as shown in FIG. 10 can be resolved at the same time. The position of the tilt prevention wheels 46 relative to the upper surface of the upper rail 4 may be in contact with each other at the time of installation, or in close proximity with a slight gap, and in either case, the same effect of the tilt prevention function can be obtained. .

Next, FIG. 7 shows support wheels 42, 44 and tilting prevention wheels 46.
This figure shows a modification example of the shape of the upper rail 4 and the corresponding internal shape of the upper rail 4. As shown in FIG. A combination, or a combination of a wheel 76 whose outer periphery is a curved convex surface and a concave groove 4d, as shown in FIG.
As shown in FIG. 4C, various combinations can be adopted, such as a combination of a wheel 78 with a trapezoidal convex outer periphery and a concave groove 4e.

In addition, although the example of application to a folding door was shown in the above-mentioned example, it is not limited to this and can also be applied to a normal folding door.

Further, the tilt prevention wheels 46 may be configured to be vertically adjustable with respect to the suspended wheel holding plate 40. in this case,
It has the advantage of being able to accommodate various rails with different dimensions with a single component.

〔Effect of the invention〕

According to this invention, the folding door is prevented from tilting in the traveling direction by the tilting prevention wheels, and the support wheels can rotate with respect to the lower surface in the upper rail and the tilting prevention wheels can rotate with respect to the upper surface in the rail, so that the folded door can be kept in the folded state. It is possible to obtain smooth running without causing knocking etc. when moving on the road.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing one embodiment of the folding door suspension wheel according to the present invention, Fig. 2 is a schematic front view partially sectional, Fig. 3 is a schematic plan view, Fig. 4 is an exploded perspective view, and Fig. 5 The figure is a schematic plan view showing the opening/closing state of the folding door with respect to the folding door mounting frame.
7 is an abbreviated sectional view showing a modified example of the inner shape of the wheel and the corresponding rail. FIG. 9 and 10 are a schematic side view and a schematic plan view showing the conventional drawbacks. 4... Upper rail 4a... Convex strip (lower surface inside the rail) 4b... Convex strip [upper surface inside the rail] 10.12... Cover folding door (folding door) 16... Mounting member 18...・Hanging wheel body 42, 44...Support wheel 46...Tilt prevention wheel Patent applicant Takahashi Hardware Co., Ltd. Isogawa Sangyo Co., Ltd. Representative Patent attorney Yoshiharu Yoshida Figure 3 Figure 1 Figure 2 (A-4C ( B) d (C) e

Claims (1)

[Scope of Claims] A mounting member having one end fixed to the upper end of the folding door, and a suspension wheel main body mounted to the mounting member so as to be able to run on the upper rail, and the suspension wheel main body has a mounting member fixed at one end to the upper end of the folding door. In a hanging wheel for a folding door that is provided with support wheels that support the load of the folding door by contacting the lower surface of the rail at intervals, the hanging wheel body has a space between the lower surface of the rail and a support wheel that supports the load of the folding door. A hanging wheel for a folding door, characterized in that a tilting prevention wheel is provided that contacts the top surface of the folding door to prevent the folding door from tilting in the running direction.