JPH09279931A - Travel device for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a travel device with no rattling of a door wheel due to rolling, to be hardly departed from a rail and stable in travelling. SOLUTION: This travel device has a rail 3 provided with a recessed groove 3a extended over a floor 2 in the longitudinal direction and a door wheel 1 provided with a wheel 5 mounted at the lower edge 7 of a sliding door 6 to rotate and travel on the rail 3. A protruded line 14 to be inserted in the recessed groove 3a is peripherally provided at the center of the outer periphery of the wheel 5 and a descending ground plane 13 is formed outside along both sides of the protruded line 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door which comprises a rail extending on the floor and a door roller mounted on a lower edge of a sliding door used for fittings running on the rail. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, a wheel is mounted on a bottom edge of a sliding door used for a partition or the like, and a groove (ridge) of a rail extended on the floor or flush with the floor. A door roller that is inserted and rotated is known. In order to improve the opening and closing functions such as smoothness and stability of the sliding door movement, the fitting structure between the door wheel and the groove of the rail is essential. A device has been proposed.

For example, FIG. 5 shows Japanese Patent Laid-Open No. 7-279529.
1 shows a main part of a conventional running device for a sliding door disclosed in Japanese Patent Application Publication No. JP-A-2003-187, in which the running device for a sliding door is embedded in a floor surface 20 and has a rail 21 extending straight and wheels 22 running on the rail 21 for rotation. And a door roller 23 fixed to the sliding door. In this sliding door traveling device, the wheels 2
The receiving surface 24 of the rail 21 that receives the two travels has a flat shape, and a recessed groove 25 extending in the longitudinal direction of the rail 21 is provided in the center thereof. Then, the wheels 2 of the door roller 23
The second tread surface 26 is formed into a circumferential surface, and a ridge 27 is provided in the circumferential direction of the central portion of the tread surface 26.

This conventional sliding door traveling device is provided with a rail 21.
Since the fitting margin between the groove 25 of the door and the protrusion 27 of the wheel 22 of the door roller 23 can be deepened, it is possible to prevent the wheel 22 from being easily disengaged from the rail 21 during traveling, and to support the weight of the sliding door. The receiving surface 24 of the door 21 is flat and the tread 2 of the wheel 22 of the door roller 23 corresponding to the receiving surface 24 of the rail 21.
Since 6 is a circumferential surface type, the posture of the wheel 22 on the receiving surface 24 of the rail 21 is stable.

[0005]

By the way, in the above-described conventional sliding door traveling apparatus, the tread 2 having a flat circumferential surface of the wheel 22 is used.
6 is in wide contact with the flat receiving surface 24 of the rail 21,
The weight applied to the door roller 22 is vertically applied to the flat receiving surface 24 of the rail 21 over the entire width of the tread surface 26 in contact with the rail 21. Therefore, since the door roller 23 travels by vertically distributing the received weight on the receiving surface 24 of the rail 21, the door roller 23 easily slips in the direction orthogonal to the traveling direction of the wheels 22 and rattles due to the lateral shake of the sliding door. Wheels 22
Since the horizontal contact surface between the tread surface 26 and the receiving surface 24 of the rail 21 is large, the frictional resistance is increased, the traveling of the door roller 23 becomes heavy, and the traveling noise is also increased.

Further, in the above-described conventional sliding door traveling device, the ridge 27 provided on the wheel 22 of the door roller 23 is inserted into the recessed groove 25 as a guide for traveling, and the wheel 22 is traveling during traveling.
Although the ridge 27 of the wheel 22 is fitted with a degree of freedom that allows rotational movement in the groove 25, it basically prevents lateral movement of the door roller 23. Not a thing.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a sliding door traveling device which eliminates rattling due to lateral shake of a traveling door roller and which is hard to separate from a rail and has good traveling stability. It is an issue.

[0008]

According to the present invention, there is provided a sliding door traveling device, comprising: a rail provided on a floor surface and provided with a groove extending in the longitudinal direction; and a rail mounted on a lower edge of the sliding door to move above the rail. In a traveling device for a sliding door including a door roller having wheels that rotate, a ridge that fits into the groove is provided around the center of the outer peripheral edge of the wheel, and the ridge extends outward along both sides of the ridge. A downward slope ground contact surface was formed. By providing a ridge on the outer peripheral edge of the wheel and making the ground contact surface on both sides of the ridge an inclined surface that is lowered outward, the load applied to the wheel is concentrated in the center of the receiving surface of the rail with the groove in between, and the above-mentioned problem Is solved.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

1 to 3 show a first embodiment of a sliding door traveling apparatus according to the present invention, which is mounted on a rail 3 extending on a floor surface 2 and a lower edge 7 of a sliding door 6. , A door roller 1 having wheels 5 running on a receiving surface 4 of the rail 3 facing upward
It is composed of

The sliding door 6 is a door plate which is surrounded by a stile or a frame and which is formed by attaching a wooden plate, an aluminum plate, a glass plate or the like, and is used as a partition. A door roller 1 that projects below the wheel 5 is embedded.

The door roller 1 is made up of a metal case 8 having an inner case 8b incorporated in an outer case 8a, the lower end surface of which is opened so that the wheels 5 can come out, and wheels 5 housed in the case 8. The axle 9 of the wheel 5 is fixed at the intersection of a groove 10 cut downward in the outer case 8a and a groove 11 cut obliquely in the inner case 8b.
Incidentally, the door roller 1 is not limited to the illustrated form, but may be of a well-known type with an adjusting mechanism capable of adjusting the position of the wheel 5 vertically and horizontally (not shown).

The wheel 5 is formed in a disk shape using an engineering synthetic resin such as polyamide and polyacetal which has excellent rigidity and wearability and has a good running feel. A metal axle 9 is projectingly provided at the center of both walls of the wheel 5, and the base end of the axle 9 is a circular trapezoidal thrust receiver 12 protruding from the wall of the wheel 5. Further, in the center of the outer peripheral edge of the wheel 5, there is provided a ridge 14 which is fitted into the concave groove 3a of the rail 3 and serves as a guide for the door roller 1, and receives the weight of the sliding door 6 to receive the rail 3. Grounding surface 13 of wheel 5 in contact with surface 4
Is formed on the inclined surface which is hung outwardly along both side base ends 15 and 15 of the protrusion 14.

The inclined surface of the ground contact surface 13 of the wheel 5 includes an inclined surface curved slightly outward.

The rail 3 is made of a metal material such as aluminum or stainless steel, and the receiving surface 4 of the rail 3 on which the wheel 5 travels is formed into a smooth horizontal surface. At the center of the receiving surface 4, the wheel 5 is formed. The recessed groove 3a into which the ridge 15 is inserted is provided so as to extend in the length direction of the rail 3. The rails 3 are embedded in the floor surface 2 substantially flush with each other and extend straight and horizontally.

In the sliding door traveling apparatus of the present embodiment configured as described above, the rail 3 has the receiving surface 4 which is flat and has the groove 3a, and the grounding surface 1 of the wheel 5.
3 is formed on the sloped surface which goes down from the base end to the outside with the ridge 14 inserted into the recessed groove 3a being sandwiched therebetween, as shown in FIG. The grounding portion to the surface 4 is limited to the vicinity of the base end 15 portion of the ridge 14,
The weight applied to the door roller 1 is received in the vicinity of the corner 3b where the open end of the groove 3a of the rail 3 and the receiving surface 4 are continuous.
Then, the weight received by the wheel 5 acts so as to concentrate on the center of the outer peripheral surface of the wheel 5, that is, the ridge 14 by the inclined grounding surface 13, and concentrates on the center of the receiving surface 4 of the rail 3 which sandwiches the concave groove 3a. To be done.

Therefore, since the door roller 1 has a small contact surface with the rail 3, it can be run with less rolling friction and can be lightly bent, and can be adapted to a slight bend or warp that occurs when the rail 3 is molded or laid. It is easy to drive and can be run lightly with less running noise.

Further, since the weight applied to the door roller 1 is applied to the vicinity of the corner 3b between the groove 3a and the receiving surface 4 while the door roller 1 is running, it acts so as to concentrate on the center of the outer peripheral surface of the wheel 5. Even if the wheel 5 is hardly skided during running and the sliding door 6 is opened and closed roughly, the door roller 1 has the ridge 1 provided at the center of the outer peripheral edge of the wheel 5 in the groove 3a of the rail 3. Since the vehicle is inserted and travels as a guide, the so-called derailment phenomenon in which the door roller 1 is disengaged from the rail 3 during traveling does not occur. Therefore, the traveling device of this embodiment is particularly suitable when the sliding door 6 having a light weight that easily bounces during traveling is used.

FIG. 4 shows another embodiment, but since the door roller 1 is the same as that described above, the same reference numerals are given and the description thereof is omitted.

As shown in the figure, in the rail 3 in the present embodiment, the receiving surface 4 is formed as an inwardly inclined surface corresponding to the ground contact surface 13 of the wheel 5 which faces the groove 3a. .

In the present embodiment, the contact surface between the door roller 1 and the rail 3 is enlarged by making the contact surface 13 of the wheel 5 and the receiving surface 4 of the rail 3 correspond to each other, but the contact surface is projected in the vertical direction. Since the area is small, rolling friction is small, and since the receiving surface 4 is inclined inward, the wheels 5 do not skid. The protrusion 14 also prevents the rail 3 from being detached.

Generally, if the contact surface between the grounding surface 13 of the wheel 5 and the receiving surface 4 of the rail 3 is small, the weight applied to the door roller 1 is locally concentrated. Therefore, when the weight of the sliding door 6 is large, the ground contact surface 13 of the wheel 5 and the receiving surface 4 of the rail 3 locally wear, and the durability decreases. In the present embodiment, since the contact surface is made an inclined surface and expanded to relieve the concentration of weight, it is suitable for a heavy sliding door.

[0023]

The present invention is embodied in the form described above and has the following effects.

According to the sliding door traveling device of the present invention, the ground contact surface of the wheel is formed as an inclined surface which is hung outward along both side base ends of the protrusion provided around the center of the outer peripheral edge of the wheel, and the rail is also provided. Since a groove extending in the length direction in which the ridge of the wheel is inserted is provided on the wheel, the weight applied to the wheel is concentrated on the center of the receiving surface of the rail, and there is almost no side slipping of the wheel during running. Therefore, there is no rattling during traveling, and the ridge is inserted into the concave groove of the rail 3 to travel as a guide, so that a so-called derailment phenomenon does not occur even if the sliding door is roughly opened and closed.

Further, since there are few ground contact surfaces between the door roller and the rail, the traveling becomes lighter, and the running door roller easily adapts to a slight bending or warping of the rail that occurs during rail forming or laying construction. It is possible to open and close the sliding door with a light and stable running sound.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a fitted state of the form of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a cross-sectional view showing the main parts of another embodiment of the present invention.

FIG. 5 is a sectional view showing a main part of a conventional example.

[Explanation of symbols]

1 door roller, 2 floor surface, 3 rails, 3a concave groove, 5 wheels, 6 sliding doors, 7 lower edge, 13 ground contact surface, 14 ridges

Claims (1)

[Claims] 1. A sliding door comprising a rail provided on a floor surface and provided with a groove extending in the longitudinal direction, and a door roller equipped with a wheel mounted on a lower edge of the sliding door to rotate on the rail. In the traveling device, a ridge that fits into the groove is provided around the center of the outer peripheral edge of the wheel, and a downwardly inclined grounding surface is formed outward along both sides of the ridge. Traveling device for sliding doors.