JP3089458B2 - Derailment prevention device for door car rail - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing falling of a wheel of a door roller in a thin door roller rail having a V-shaped door roller rolling groove.

[0002]

2. Description of the Related Art Conventionally, there is a door stroller rail in which a V-shaped door stroller rolling groove is formed on the upper surface of a rail body so that a part of both sides of a wheel of the door stroller contacts and rolls. It has the advantage of having a very small contact area with the door and the ability to open and close the sliding door with a light force, but is widely used.
A large lateral pressure on the sliding door, for example, when the child is playing and hits the sliding door, the shape of the door rolling groove is V-shaped, that is, a tapered surface such that the inclined wall constituting the door rolling groove expands right and left upward. Therefore, there is a danger that the door wheel is pushed up against the own weight of the sliding door due to the action of the tapered surface thereof, detaches from the door rolling groove, comes off the wheel, and the sliding door is inclined and falls.

[0003] In order to eliminate the above danger, FIG.
Has been devised, which is a V-shaped door roller rolling in which a part of both sides of the wheel 21 of the door roller 2 contacts the upper surface of the rail body 1 and rolls. Moving groove 11
In the rail for a door roller formed with
A ridge 2 having a width that does not contact the groove 12
In the case where a large lateral pressure acts on the sliding door A, the ridge 22 of the wheel 21 comes into contact with the side wall of the groove 12 to prevent the wheel from being detached.

[0004]

SUMMARY OF THE INVENTION In this device,
The effect of preventing derailing can be achieved regardless of the height of the rail main body 1 and the inclination angle of the door roller rolling groove 11, but there is a limit to the thickness of a sill or floor for embedding the rail main body 1 horizontally. In a case where the rail body 1 has a large height, that is, a large thickness, a portion that protrudes from the sill surface or floor surface, that is, a protruding amount becomes large, and becomes an obstacle for a person passing through the entrance or the partition. Needs to be reduced in thickness.

More specifically, the amount of protrusion is determined by administrative guidance so as to be 3 mm or less so that a physically handicapped person does not hinder the passage of a wheelchair.
The thickness of the rail body 1 needs to be about 2.5 mm when it is directly mounted on a sill surface or a floor surface .

[0006] The thickness of the rail body 1 is 2.5 mm or more .
When it is 0 mm or less, not only the inclination angle of the door roller rolling groove 11 but also the thickness of the ridge 22 of the door roller 2 is limited.

[0007]

The object of the present invention is that the rail body has a thickness of 2.5 m.
It is an object of the present invention to provide a derailing prevention device that can be appropriately used in a door roller rail having a length of not less than m and not more than 3.0 mm.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a device for preventing derailing of a door roller for a door roller, comprising a V-shaped door roller which rolls when a part of both sides of a wheel of the door roller contacts the upper surface of the rail body. In a door rail directly attached to a sill surface or a floor surface having a groove, the height of the rail body is 2.5 mm or more and 3.0 m or more.
m or less, and the inclination angle of the door wheel rolling groove is set to 5 degrees or more and 35 degrees or less with respect to a horizontal line, and a groove is formed in a central valley of the door wheel rolling groove in the longitudinal direction, and the door wheel rolling groove is formed. In the center of the outer circumference of the wheel, 0.8mm in width that does not contact the groove
A ridge having a thickness of at least 1.2 mm or less is provided around the periphery.

[0009]

Since the door rolling groove is shallower in accordance with the thickness of the rail main body, the sliding door can be lifted little, and even if the thickness of the protrusion of the wheel of the door wheel is small, the effect of preventing derailing can be sufficiently exhibited.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a longitudinal sectional side view of a device of the present invention in which a door rail and a door roller are separated, and FIG. 2 is a longitudinal sectional side view of a device in which the form of the present device is changed and a door roller and a door roller are separated. , 1 is height or thickness m of 2.5
mm or more and 3.0 mm or less, with V
A door-shaped rolling groove 11 is formed in the shape of a letter, and the inclination angle α of the symmetrical slope wall forming the groove 11 is set to be 5 degrees or more and 35 degrees or less. Reference numeral 11 denotes a groove formed in the central valley portion of the door roller rolling groove 11 in the longitudinal direction, and a ridge of a door wheel described later fits into the groove. Reference numeral 2 denotes a door wheel having wheels 21 mounted on the lower end of the sliding door A and rolling at both ends of the door body rolling groove 11 of the rail body 1 with both ends guided. A width of 0.8 mm or more and 1.2 mm
A ridge 22 having the following thickness is provided around.

When the wheels 21 of the door roller 2 run in the door roller rolling grooves 11, the wheels 21 are guided by the two inclined walls constituting the door roller rolling grooves 11 without the ridges 22 coming into contact with the side walls of the grooves 12. It rolls and the sliding door A is opened and closed in a stable state.

When side pressure is applied to the sliding door A, the door wheel 2 tends to float due to the action of the inclined wall, but the ridge 22 comes into contact with the side wall of the groove 12 to prevent further lateral deflection, and the wheel is released. Is prevented. This effect is the same in the prior art.

The reason why the inclination angle of the symmetrical sloping wall constituting the door rolling groove 11 is set to 5 degrees or more and 35 degrees or less is that if the inclination angle is 5 degrees or less and is almost horizontal, the sliding door A If the sliding door A is slightly pressed against the sliding door A when it is opened and closed, the ridge 22 comes into contact with the side wall of the groove 12 and is rubbed. If the inclination angle is 35 degrees or more, it is effective in preventing derailing. This is because the depth of the groove 12 cannot be obtained.

The reason that the thickness of the ridge 22 is 0.8 mm or more and 1.2 mm or less is that if the thickness is 0.8 mm or less, the contact with the side wall of the groove 12 is incomplete and the thickness is 1 mm or less. If it is .2 mm or more, friction may occur due to contact with the bottom wall of the groove 12.

In FIG. 2, reference numeral 3 denotes a groove for inserting a head of a nail for mounting the rail body 1.

[0016]

According to the device for preventing derailment in a door roller rail according to the present invention, the inclination angle of the inclined wall of the door roller rolling groove is reduced, and the depth of the door roller rolling groove is adjusted according to the thickness of the rail body. It is made shallow, so that the lifting of the sliding door is made small, so that even if the thickness of the ridge of the door wheel is small, it is possible to sufficiently achieve the effect of preventing wheel derailment, so it is possible to prevent wheel derailment on thin door roller rails This is what led to the break-in.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a state where a door roller and a door roller of the apparatus of the present invention are separated.

FIG. 2 is a vertical sectional side view of a state in which a door roller and a door roller, in which the form of the device of the present invention is changed, are separated.

FIG. 3 is a vertical sectional side view of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rail main body 11 Door roller rolling groove 12 Groove 2 Door roller 21 Wheel 22 Projection

Claims (1)

(57) [Claims] A wheel 21 of a door roller 2 is provided on an upper surface of a rail body 1.
V-shaped door roller rolling groove 1 in which a part of both sides of the roller contacts and rolls
In the rail for door rollers directly attached to the sill surface or floor surface on which the rail 1 is formed, the height of the rail body 1 is set to 2.5 mm or more and 3.0 or more.
mm or less, the inclination angle of the door wheel rolling groove 11 is set to 5 degrees or more and 35 degrees or less with respect to a horizontal line, and a groove 12 is formed in a central valley portion of the door wheel rolling groove in a longitudinal direction, A detaching wheel on a rail for a door car, characterized in that a ridge 22 having a thickness of 0.8 mm or more and 1.2 mm or less is provided around the center of the outer periphery of the wheel 21 of the door car 2 so as to have a width that does not contact the groove 12. Prevention device.