JP3043450U - Door tightening and fixing device - Google Patents

Abstract

(57) [PROBLEMS] To provide a door tightening and fixing device capable of easily fitting a screw shaft portion into a screw hole without the need for manual alignment. SOLUTION: A door receiving plate 2 fixed to a fixed frame body 1 and a knob 4 attached to a door 3 are provided, and a screw hole 5 of the door receiving plate 2 is formed.
In a door tightening and fixing device that holds the door 3 in the closed position by screwing the tip screw shaft portion 6 of the knob 4 into the door, the guide plate 7 is fixed to the door receiving plate 2, and the guide plate 7 has a screw hole of the door receiving plate 2. A slender bowl-shaped guide hole 8 that tapers toward 5 is provided.

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD The present invention relates to a door tightening and fixing device used for an inner door of a switchboard storage box or the like.

[0002]

2. Description of the Related Art A conventional door tightening and fixing device is composed of a door support plate fixed to a fixed frame and a knob attached to the door, and a knob attached to the door is attached to a screw hole of the door support plate. The tip screw shaft is screwed in and the door is clamped and fixed directly to the door support plate.

However, in the door tightening and fixing device configured as described above, the screw shaft portion at the tip end portion of the knob must be fitted while confirming the location of the screw hole provided in the door receiving plate, and If the knob on the door side and the screw hole of the door support plate are not aligned correctly, it is difficult to screw in and it is necessary to perform centering, so workability is poor.

[0004]

Therefore, an object of the present invention is to easily fit the screw shaft portion into the screw hole without the need for manual alignment, and to prevent the knob from being slightly displaced from the screw hole. Another object is to provide a door tightening and fixing device that can be screwed in.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] Hereinafter, referring to the reference numerals in the accompanying drawings, in a door tightening and fixing device of the present invention, a door receiving plate 2 fixed to a fixed frame body 1 and a door 3 are mounted. In the door tightening and fixing device for holding the door 3 in the closed position by screwing the tip screw shaft portion 6 of the knob 4 into the screw hole 5 of the door receiving plate 2, the guide plate 7 is attached to the door receiving plate 2. The guide plate 7 is provided with a guide hole 8 in the shape of a mortar that is tapered toward the screw hole 5 of the door receiving plate 2.

When the door 3 is closed, the screw shaft portion 6 of the knob 4 enters the guide hole 8 of the guide board 7 at the end of the closing operation. When the screw shaft portion 6 of the knob 4 and the screw hole 7 of the door receiving plate 2 are correctly aligned, the screw shaft portion 6 is screwed into the screw hole 7 as it is. When not properly aligned, the screw shaft portion 6 is guided by the inner wall surface of the guide hole 8 toward the screw hole 5, and the automatically aligned screw shaft portion 6 is screwed into the screw hole 5. As a result, the door 3 is clamped and fixed to the door receiving plate 2.

When the door 3 is opened, the knob 4 may be rotated in a predetermined direction to pull out the screw shaft portion 6 from the screw hole 5 of the door receiving plate 2, and then the knob 4 may be pulled forward.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the illustrated embodiment, a door 3 is pivotally attached at its base end to a fixed frame body 1 such as a main body of a switchboard storage box by a hinge 18. The door receiving plate 2 bent into an L-shape has a screw hole 5 at the bent front end and a screw hole 17 at the base end. The door support plate 2 is fastened and fixed to the body fitting 9 via the washer 10 and the spring washer 11 by the bolt 12 screwed into the screw hole 17 from the slot 14 of the body fitting 9. The guide board 7 is fixed to the door support plate 2 by screwing a screw 13 into the blind hole 14 on the lower surface side of the guide support plate 7 from the through hole 16 of the door support plate 2.

A claw 15 is provided on an edge portion of the guide board 7 in a direction perpendicular to the longitudinal axis, and by engaging the claw 15 with an end surface of the door support plate 2, the guide board 7 is closed. It is non-rotatably attached to the backing plate 2. Further, the slot 14 of the main body fitting 9 can increase or decrease the interval between the fixed frame body 1 and the door 3. A knurled groove is provided on the peripheral surface of the main body of the knob 4.

[0010]

As described above, in the door tightening and fixing device of the present invention, the guide plate 7 is fixed to the door receiving plate 2, and the guide plate 7 is tapered toward the screw hole 5 of the door receiving plate 2. Since the guide hole 8 shaped like a mortar is provided, the screw shaft portion 6 of the knob 4 on the door 3 side is guided to the inner wall surface of the guide hole 8 to align the screw shaft portion 6 with the screw hole 5. Is done automatically.

With this, when the door is tightened and fixed, it is not necessary to perform the screwing work while confirming the position of the screw hole 5, and even if the positions of the screw hole 5 and the knob 4 are slightly deviated from each other. The guide shaft 8 allows the screw shaft portion 6 to be accurately guided to the screw hole 5, so that the screw shaft portion 6 can be accurately tightened and fixed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a use state of a door tightening and fixing device according to an embodiment of the present invention.

FIG. 2 is a left side view of an assembled state of a door receiving plate and a guide panel of the door tightening and fixing device.

FIG. 3 is a plan view of an assembled state of a door receiving plate and a guide panel of the door tightening and fixing device.

FIG. 4 is a front view of the guide board.

FIG. 5 is a vertical sectional view of the guide board.

FIG. 6 is a right side view of the guide board.

[Explanation of symbols]

 1 Fixed Frame 2 Door Receiving Plate 3 Door 4 Picking 5 Screw Hole 6 Screw Shaft 7 Guide Board 8 Guide Hole 9 Main Body Metal Fitting 10 Washer 11 Spring Washer 12 Bolt 13 Screw 14 Blind Hole 15 Claw 16 Screw Hole

Claims (1)

[Utility model registration claims] 1. A door receiving plate 2 fixed to a fixed frame 1 and a knob 4 attached to a door 3, and a screw hole 5 of the door receiving plate 2.
In a door tightening and fixing device that holds the door 3 in the closed position by screwing the tip screw shaft portion 6 of the knob 4 into the door, the guide plate 7 is fixed to the door receiving plate 2, and the guide plate 7 has a screw hole of the door receiving plate 2. 5. A door tightening and fixing device, characterized in that a guide hole 8 in the shape of a mortar that is tapered toward 5 is provided.