JP3227636B2 - Door roller mounting device for sliding door - 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 mounting a door roller which can easily and securely mount the door roller to a sliding door, and which is simple and inexpensive.

[0002]

2. Description of the Related Art FIG. 5 shows a sliding door type storage box used for storing documents and the like in an office or the like. (1) is a main body, (2) is a sliding door, and (3) is a handle.

FIGS. 3 and 4 show an example of a conventional device for attaching a door roller to a sliding door (2). The door roller (4) has a downward U-shaped side shape and a lower elastically expanded lower portion. A roller (6) is pivotally formed on a synthetic resin case (5).

[0004] At the lower end of the sliding door (2), there is formed a U-shaped mounting plate (8) facing downward in a side view. The height of the front piece (8a) of the mounting plate (8) is approximately half the height of the door roller (4), and the front-rear width of the horizontal piece (8b) on the upper surface of the mounting plate (8) is The height of the rear piece (8c) is the same as that of the front and rear pieces (8a). Horizontal piece
Near the left and right ends of (8b), insertion holes through which the door roller (4) can pass
(9) is drilled.

Above the mounting plate (8) on the back surface of the sliding door (2), the mounting plate (8) is bent stepwise downward and forward.
An upwardly facing front piece (10a) of a holding plate (10) that covers the front panel is fixed.

[0006] A horizontal piece (10) of the holding plate (10) which faces forward.
Above the insertion hole (9) in b), a rectangular notch (11) used to push out the door roller (4) is formed.
The rear piece (10c) of the holding plate (10) overlaps with the rear face of the rear piece (8c) of the mounting plate (8) and hangs down. Then, it is folded upward at the same height as the lower end of the sliding door (2). It is superposed on the front.

In the above-described apparatus, if the door wheel (4) is inserted into the insertion hole (9) of the mounting plate (8) from below, the upper end of the door wheel (4) is placed on the horizontal piece (10b) of the holding plate (10). And the door wheel (4)
It is elastically sandwiched between the rear piece (10c) of the holding plate (10) and the front piece (8a) of the mounting plate (8), and cannot move upward, front, back, left and right,
It can be taken out downward and attached to the sliding door (2).

[0008]

In the above-mentioned door roller mounting device, the lower end of the sliding door (2) is bent to form an insertion hole.
An attachment plate (8) having a perforated (9) is formed, and a door roller (4) is fitted to a door roller holder formed by welding a stepped holding plate (10) to a sliding door (2). The number of processing steps is large,
(4) Installation was troublesome and costly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus which can easily and reliably mount a commercially available door roller with a simple configuration of a door roller holder.

[0010]

SUMMARY OF THE INVENTION In the present invention, the side shape is downward U.
A pair of left and right locking projections are provided on the inner surface of the parallel piece of the mounting plate which is detachably sandwiched between the two parallel pieces on both sides in the axial direction of the door roller, at the same interval as the width of the door roller. The front piece of the parallel piece is fixed to the lower end of the rear surface of the sliding door.

[0011]

According to the device of the present invention, the door roller inserted from below into the mounting plate has its upper end and both side ends abutting against the horizontal piece and both locking projections of the mounting plate, respectively, and has elasticity between the front and rear pieces of the mounting plate. It is fixed to a sliding door so that it cannot be moved upward, forward, backward, left and right, and can be taken out downward.

[0012]

1 and 2 show a door roller mounting device according to the present invention. The same members as those of the above-described conventional device are denoted by the same reference numerals, and description thereof is omitted. The following mounting plate (21) is fixed to the lower end of the rear surface of the sliding door (2) in place of the mounting plate (8) and the holding plate (10).

The height of the front piece (21a) of the mounting plate (21) bent in a downward U-shape having the same width as that of the sliding door (2) is equal to the height of the door roller (4), and is equal to the horizontal piece (21b). Is equal to the front-rear width of the door roller (4), and the height of the rear piece (21c) is substantially half the height of the front piece (21a). In the vicinity of both ends of the rear piece (21c), a holding piece having a width substantially equal to the width of the door roller (4) and a lower end being equal in height to the lower end of the front piece (21a).
(21a) is connected downward.

A pair of left and right locking projections (22) are provided on the back side of the front piece (21a) on both sides of each holding piece (21d).
It is provided with a space equal to the width of (4) and protrudes rearward.

The mounting plate (21) is spot-welded to a back surface of the sliding door (2) at an important point of the front piece (21a) so that a lower end thereof is flush with a lower end of the sliding door (2). ing.

In the above-described apparatus, the door roller (4) is attached to the mounting plate (2).
If the door roller (4) is inserted from below between the front piece (21a) and the holding piece (21d) of (1), the upper end and both side pieces of the door roller (4) are horizontal pieces, respectively.
(21b) and both locking projections (22), and the front piece (21a)
Is elastically held between the holding pieces (21d), cannot move upward, forward, backward, left and right, can be taken out downward, and the sliding door (2)
Attached to.

Although not shown, the holding piece (21d) is omitted, the height of the rear piece (21c) is made equal to the height of the front piece (21a), and both ends of the front and rear pieces (21a) (21c) are formed. In between, a door wheel (4) may be attached.

The total length of the mounting plate (21) is made extremely short, and two mounting plates (21) are fixed to both ends of the rear surface of the sliding door (2), and one mounting plate (21) is attached to each mounting mounting plate (21). The door roller (4) may be attached in the same manner as described above, and if necessary, for example, a rib or the like may be bent between the two mounting plates (21) at the lower rear end of the sliding door (2) to reinforce the door.

[0019]

According to the device of the present invention, the structure of the mounting portion of the door roller is significantly simpler than that of the conventional device, and can be manufactured at a low cost. In addition, the door roller can be easily and reliably detachably mounted on the sliding door. Can be.

[Brief description of the drawings]

FIG. 1 is a rear view of a lower portion of a sliding door to which the present invention is applied.

FIG. 2 is a sectional side view taken along line AA of FIG. 1;

FIG. 3 is a rear view of a lower portion of a sliding door provided with a conventional device.

FIG. 4 is a vertical sectional side view taken along line BB of FIG. 3;

FIG. 5 is a front view of a sliding door type storage.

[Explanation of symbols]

 (1) Main body (2) Sliding door (3) Handle (4) Door roller (5) Case (6) Roller (8) Mounting plate (8a) Front piece (8b) Horizontal piece (8c) Rear piece (9) Insertion hole ( 10) Holding plate (10a) Front piece (10b) Horizontal piece (10c) Rear piece (11) Notch (21) Mounting plate (21a) Front piece (21b) Horizontal piece (21c) Rear piece (21d) Nipping piece ( 22) locking projection

Claims (1)

(57) [Claims] 1. A pair of left and right sides is formed on the inner surface of a parallel piece of a mounting plate which has a downward U-shaped side face and between which the two sides in the axial direction of a door wheel are detachably sandwiched. A sliding door mounting device for a sliding door, wherein locking projections are protruded at equal intervals to the horizontal width of the sliding door, and a front piece of the parallel piece is fixed to a lower end of the rear surface of the sliding door.