JP3331281B2 - Height adjustable 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 door roller having a height adjustable, in particular, attached to the lower end of a sliding door (including a sliding door) so that the door roller can be protruded and retracted from the lower end face of the sliding door to facilitate the height adjustment of the sliding door with respect to the rail. The present invention relates to a height adjustable door roller.

[0002]

2. Description of the Related Art Conventionally, a sliding door is attached to a lower end of a sliding door in order to easily move the sliding door along a rail laid on a floor surface. 2. Description of the Related Art A conventional door roller includes a door roller case which is partially or entirely embedded in a lower end of a sliding door and is attached with screws or the like, and a door roller body rotatably supported in the door roller case.

[0003]

The above-mentioned conventional door stroller is generally buried and fixed at the lower end of a sliding door, and the mounting height of the door stall is fixed. For this reason, it is necessary to adjust the height position of the door roller by mounting fittings or the like. However, since the conventional door roller is a fixed type, the height cannot be adjusted. In recent years, in order to solve this problem, a method of adjusting the height of a door roller has been proposed. By the way, in general, the larger the door roller, the more stable the running of the sliding door, but there is a problem that the size of the door roller body is remarkably limited with respect to the size of the upper door case of the door mechanism, and the door roller body cannot be enlarged. . The present invention solves the above-mentioned problems of the conventional height-adjustable door roller, and makes it possible for a large door roller body to be protruded and retracted, and is housed in a door roller case to adjust the door roller height easily. The aim is to provide a possible door car.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, a height adjustable door roller according to the present invention is provided with a door roller case buried and fixed at a lower end portion of a sliding door, and a case capable of protruding and retracting into the case in the door roller case. The stored adjustment frame, a door wheel body rotatably supported by the adjustment frame, and an adjusting screw provided on the adjustment frame are screwed together, and the adjusting screw is rotated to slide along the top surface of the door wheel case. It is composed of a moving adjustment tool, and this adjustment tool is in contact with the upper surface of the adjustment frame, and the height of the adjustment frame can be adjusted by moving the adjustment frame up and down in the door case by rotating the adjustment screw. In a simple door car, a magnet is buried in a side portion of the door car case, and an adjustment frame that moves up and down by moving up and down in the door car case is sucked.

[0005] The height-adjustable door roller of the present invention having the above-described structure is operated by simply turning the adjustment screw with a driver or the like from the outer surface of the door roller case, and the adjustment tool screwed to the adjustment screw is attached to the door roller. By moving the adjustment frame along the top surface in the case, the adjustment frame is moved up and down in the door case in accordance with the amount of movement of the adjustment tool, so that the height of the door wheel can be easily adjusted. In this case, since the adjusting tool is configured to slide along the inner surface of the door case, the outer diameter of the door unit can be made as large as possible to be accommodated in the door case.

A magnet is buried in the side of the door case and the adjustment frame which moves up and down by moving up and down in the door case is sucked, so that the adjustment frame falls out of the door case. Can be prevented.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a height adjustable door roller according to the present invention. 1 to 6 show a first reference example. Reference numeral 1 denotes a door case that can be buried and stored at the lower end of the sliding door D, and two door cases 1 are usually buried at the lower end of the sliding door D. A lower end surface of the door case 1 is open, the interior is a cavity 11, and a mounting hole 15 penetrating in the longitudinal direction is provided at an upper position on one side surface.
And the adjustment screw insertion holding hole 14 are formed. Further, a stopper 12 having a U-shaped groove is hung down on the inner top surface 16 of the hollow door case 1 so as to hold the screw in order to regulate the moving range of the adjusting tool which is moved by turning the screw. The intermediate portion of the adjusting screw 5 inserted into the adjusting screw insertion holding hole 14 is rotatably held in the U-shaped groove 13, and the screw tip is fitted into the recess 17 formed on the inner end surface inside the case, The adjusting screw 5 is rotatably supported.

In the hollow 11 of the door case 1, a door body 3 having a required outer shape and diameter is provided, and adjustment frames 2 and 2 are provided along both sides of the door body 3, respectively.
Is inserted into the upper position of the adjusting tool 4. The door car body 3 is as large as possible to be accommodated in the cavity of the door car case 1 and the support shaft 6 is directly connected to the center of the car body 3 via the bearing B or directly through the support shaft 6 so as to rotate easily. Both ends of the support shaft 6 are fitted and supported by the adjustment frame 2 along the outer surface of the door roller main body, and rotatably support the door roller main body 3.

As shown in FIG. 5, the adjusting frame 2 has a flat shape and a size and a shape to be accommodated in a door case, a shaft hole 21 for supporting the support shaft 6, and one end of the adjusting frame. The support hole 22 for supporting the adjusting tool 4 is drilled. The outer shape of the supporting shaft 22 is adjusted when the adjusting tool 4 moves along the inner top surface of the cavity by the rotation of the adjusting screw 5 screwed to the supporting hole 22. 6, and has a diameter passing through the support shaft, which is substantially equal to the inner width of the cavity of the outer case 1 and is in contact with the inner surface of the cavity. It is determined that sliding is possible.

As shown in detail in FIG. 5, the adjusting tool 4 is interposed between two opposing adjusting frames 2 and 2 and has support shafts 42 and 42 projecting from both side surfaces at the upper position of the adjusting frame 2. A screw hole 41 that fits and supports the perforated support hole 22 and penetrates the adjustment tool in a direction orthogonal to the support shaft 42 is formed. The adjustment screw is screwed into the screw hole 41. .

The adjusting tool 4 has a cylindrical shape as shown in the drawing, and a part of the peripheral surface thereof can abut on the inner top surface 16 of the door case 1, that is, can slide. In addition, this adjustment tool 4,
Adjustment frames 2 and 2 as a set of two with the door car body 3 attached
Is stored in the door case 1 as described above, but the lower portion abuts on the inner surface of the door case 1 as shown in FIGS. Even if it moves down, it protrudes downward from the lower end surface of the door roller body 3 so that it does not come into contact with a guide rail or the like.

As shown in FIGS. 1 and 4, the door frame W is assembled in the door case 1 with the adjusting frames 2, 2, the door body 3, the adjusting tool 4, and the adjusting screw 5, and a door wheel W is formed. It is buried in the door pulley mounting hole formed in. At this time, a part of the door bogie body 3 projects from the lower end surface of the sliding door so that the
The mounting screw 7 is inserted into the inside, and screwed and fixed to the sliding door D.

The height adjustment of the door bogie body is performed by adjusting the adjusting screw 5
When the adjusting tool 4 screwed to this screw moves along the top surface of the door case by turning the left or right direction, the adjustment frame pivots around the support shaft 6 and the door main body. The support shaft and the adjustment frame that support are moved up and down in accordance with the amount of movement of the adjustment tool, and the height of the door carriage body is adjusted. This state is shown in FIG. In addition, in order to easily perform this adjustment, the door screw W of the door roller W is attached so that the side of the door is located outside the side end of the sliding door.

[0014] Figure 7 to that shown in FIG. 9, Kazumi of the present invention
An example is shown. In this embodiment , the door case 1 is formed in the same manner as in the reference example, the adjusting screw 5 is inserted and supported in the adjusting screw insertion and holding hole 14, and a snap ring or other washer-shaped stopper 51 is fixed to the tip of the adjusting screw. As a result, the magnet M is buried in the side of the door case 1 below the adjusting screw 5.

The adjustment frames 20, 20 disposed opposite to both sides of the door bogie main body 3 are fixed by two or more connecting shafts 23, 23 disposed at positions not in contact with the door bogie main body 3. The door frame 3 is rotatably supported by the support shaft 6, and the upper surface of the adjustment frame 20 is formed as an inclined surface 24 as shown in FIG. It is attracted by the magnet M embedded in the case to prevent the case from slipping out of the door case.

An adjusting tool 40 screwed to the adjusting screw 5
Has a columnar shape as in the reference example, and comes into contact with the inner top surface of the door case 1 and also with a part of the inclined surface 24 of the adjustment frame 20.

Therefore, in this embodiment , the adjusting screw 5
Is rotated, the adjustment tool 40 moves along the inner top surface 16 of the door case 1 in accordance with the amount of rotation of the adjustment screw. As a result, the adjusting tool 40 is mounted on the inclined surface 24 of the adjusting frame 20.
, The adjusting frame 20 is pushed down by the amount of movement of the adjusting tool and the angle of the inclined surface, and the height of the door bogie is adjusted by lowering the door bogie main body. In addition, since the load of the sliding door is applied to the sliding door body when pushing up the sliding door, the adjusting tool is merely moved to the inner side of the sliding door case, and is automatically raised by the load of the sliding door. That is, the door car body can be pushed into the door car case.

FIGS. 10 to 13 show the second reference.
Here is an example . The door case 1 supports the adjustment screw 5 in a rotatable manner as in the first reference example and the embodiment , and the adjustment frame 20, which rotatably supports the door body 3 in the internal cavity,
20 is inserted. The method of fixing the adjusting frame 20 along the both side surfaces of the door bogie main body 3 with the connecting shafts 23, 23 is implemented.
Same as the example . In the second reference example , the upper end of the adjustment frame is inclined and bent inwardly into an L-shape to form an inclined engagement piece 25. It is locked in the provided inclined groove 43.

Since the adjusting tool 42 is slidably abutting on the inner top surface 16 of the door case 1, the adjusting tool 42 is screwed into the adjusting screw 5 to turn the adjusting tool 42 into the inner top surface 16.
The adjustment frame 2 locked in the locking groove 43 when moving along
0 is raised, that is, immersed in the door case, or lowered, that is, protruded downward, to move the door body up and down to adjust the height of the door.

Therefore, in each of these embodiments and the reference examples , the adjusting tool that rotatably supports the door roller body is vertically moved by moving the adjusting tool horizontally by turning the adjusting screw. Adjustment is performed.

[0021]

According to the height adjustable door roller of the present invention,
By simply turning the adjustment screw with a screwdriver or the like from the outside surface of the door case, the adjustment tool screwed to this adjustment screw is moved along the top surface inside the door case, and the amount of movement of this adjustment tool is reduced. Accordingly, the height of the door carriage can be easily adjusted by moving the adjustment frame up and down within the door carriage case to move up and down. In this case, since the adjusting tool is configured to slide along the inner surface of the door case, the outer diameter of the door unit can be made as large as possible to be accommodated in the door case. And bury a magnet in the side of the door case,
By adsorbing the adjustment frame that moves up and down by moving up and down in the door case , the adjustment frame can be prevented from dropping out of the door case.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a first reference example of a height adjustable door roller.

FIG. 2 is a side view of the same.

FIG. 3 is a sectional view of a door case.

FIG. 4 is a vertical sectional side view of the height adjustable door roller.

5A and 5B are explanatory diagrams of an adjustment frame and an adjustment tool, wherein FIG. 5A is a front view of the adjustment frame, FIG. 5B is a side view thereof, FIG. 5C is a front view of the adjustment tool, and FIG. is there.

FIG. 6 is an explanatory diagram showing a state in which the door wheel main body is lowered by turning the adjustment frame.

FIG. 7 is a longitudinal sectional front view of one embodiment of the present invention.

FIG. 8 is a vertical sectional side view of the same.

FIG. 9 is a bottom view of the same.

FIG. 10 is a longitudinal sectional front view of a second reference example of the present invention.

FIG. 11 is a side view of the adjustment frame and the door carriage main body.

FIG. 12 is a side view of an adjustment frame incorporating an adjustment tool.

FIG. 13 is an explanatory view of an adjusting tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door case 11 Hollow 2 Adjustment frame 20 Adjustment frame 24 Inclined surface 25 Inclined locking piece 3 Door car main body 4 Adjustment tool 40 Adjustment tool 42 Adjustment tool 43 Inclined groove 5 Adjustment screw 6 Support shaft

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 2-1383 (JP, U) JP-A 49-88537 (JP, U) JP-A 48-28647 (JP, U) 440 (JP, Y1) Jigyo 48-12457 (JP, Y1) Jigyo 48-1259 (JP, Y1) Jigyo 45-21479 (JP, Y1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E05D 15/06 114

Claims (1)

(57) [Claims] 1. A door roller case buried and fixed to a lower end of a sliding door, an adjustment frame housed in the door roller case so as to be able to protrude and retract downward from the case, a door wheel body rotatably supported by the adjustment frame, and an adjustment frame. And an adjusting tool that is screwed with the adjusting screw disposed on the upper surface of the door frame, and that slides along the top surface of the door case by rotating the adjusting screw. A height-adjustable door wheel that allows the adjustment frame to move up and down by moving the adjustment frame in the door case by turning the screw, with a magnet embedded in the side of the door case and moving up and down in the door case A height-adjustable door roller characterized in that an adjustment frame that moves up and down is sucked by doing so.