JPH0640848Y2 - Hinge for door - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door hinge.

[0002]

2. Description of the Related Art Conventionally, when a door is pivotally supported at an entrance / exit of a building, shafts attached to the upper and lower ends of the door are fitted to bearing fittings attached to the upper and lower ends of the entrance. Often. Specifically, set the bearing brackets horizontally at the upper and lower ends of the entrance and exit, insert the shaft attached to the lower end of the door into the lower bearing bracket with the door slightly tilted, and then stand the door vertically. The shaft, which is raised and attached to the upper end, is fitted into the recess through the front opening of the upper bearing fitting, and the opening is closed with a lid.

[0003]

However, in the above conventional structure, after inserting the lower shaft into the lower bearing fitting, the door is raised and the upper shaft is fitted into the upper bearing fitting from the front opening. There was a problem that the upper shaft slips out of the opening and the door falls when it is fitted into the recess and the hand is released from the door before closing the lid in that state.

The present invention solves such a problem, and an object thereof is to prevent the upper shaft from slipping out of the recess even when the door is released before the lid is closed and to prevent the door from collapsing. It is what

[0005]

In order to solve this problem, the present invention is a hinge device for rotatably supporting a door at an entrance / exit, and a door-side top pivot attached to the upper end of the door, and It consists of an upper frame side top pivot attached to the upper frame side of the entrance and exit so as to face the door side top pivot, and at the position overhanging from the door, an upwardly projecting shaft is rotatably provided on the door side top pivot. The upper frame side top pivot is provided with a recess into which the shaft is fitted from the front, and the upper frame side top pivot is provided with an engaging portion that engages with the shaft fitted into the recess and a lid that closes the opening of the recess. It will be.

[0006]

In this way, by providing the upper frame side top pivot with the engaging portion for engaging the shaft fitted in the recess, even if the door is released from the door after the shaft is fitted in the recess, the shaft does not come out of the recess. You can prevent the door from falling down without coming off,
Subsequent work can be easily performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 9, reference numeral 1 denotes a door rotatably attached to an entrance / exit portion 2 of a building. Upward and downward shafts 3 and 4 are attached to upper and lower end portions of the door 1 so as to project from the surface. ing. Then, the lower shaft 4 is inserted into a bearing fitting 5 provided horizontally at the lower end of the entrance / exit portion 2 so that the lower portion of the door 1 is rotatably supported. 5 constitutes a lower hinge device.

A door-side top pivot 7 is attached to the upper end of the door 1, and the top pivot 7 is mounted on the upper end of the door 1 with a screw 8 and an adjusting screw 9 is mounted on the attaching plate 8 to remove the door. 1, a body 10 movable in the width direction, an upwardly-directed shaft 3 of the upper end rotatably attached to the body 10, and a lower end of the shaft 3 so as to rotate integrally with the shaft 3. The stopper metal fitting 11 and the door 1 are opened at a predetermined angle, that is, the stopper metal fitting 11 is rotated at a predetermined angle.
The ball 13 is biased toward the stopper fitting 11 side by the spring 12 so that the concave portion 11a at the tip of 11 is engaged.
More specifically, a slot 14 is formed in the body 10, and the body 10 is moved and adjusted on the mounting plate 8 within the length of the slot 14.
After that, the tightening screw 15 is screwed into the screw hole 8a of the mounting plate 8 to fix the main body 10. Reference numeral 16 is a cover that covers the outer protruding portion of the top pivot 7 having the above-described configuration from below.

Reference numeral 17 denotes a top pivot which is attached to the upper frame 24 of the entrance / exit portion 2 to form an upper hinge device by forming a pair with the door side top pivot 7. The upper frame side top pivot 17 is the door side. The body 10 of the top pivot 7 is provided with a rectangular recess 18 into which the upper end of the shaft 3 provided so as to project upward is fitted. The recess 18 has a rectangular shape that is long in the widthwise direction of the entrance / exit portion 2, and has a top pivot 17
The opening 18 of the recess 18 is fixed by the lid 20 fixed to the
a is to be closed. More specifically, the shaft 3 has a square shape which is almost square in plan view, the shaft of the opening 18a is slightly larger than the dimension of one side of the square of the shaft 3, and the position of the opening 18a is set in the door 1. It is set on one end side of the concave portion 18 which is closer to the pivot side in the width direction. Reference numeral 21 is an engaging portion integrally provided on the top pivot 17 so that the shaft 3 fitted in the concave portion 18 is engaged, and 22 is a concave portion of the shaft 3
Recessed in a position where it is fitted into 18 and engages with engaging portion 21
It is a protruding piece provided integrally with the lid 20 to fill the space portion of 18. Reference numeral 23 is a cover for covering the outwardly protruding portion of the top pivot 7 having the above-mentioned configuration from below.

When the door 1 is rotatably attached to the entrance / exit portion 2 by the hinge device having the above-described structure, first, the door 1 is slightly tilted to insert the lower shaft 4 into the bearing fitting 5, and in this state, the door 1 is attached. Open about 30 degrees and fit the upper shaft 3 into the recess 18 through the opening 18a. At this time, one side of the square of the shaft 3 is oriented parallel to the opening 18a and the door 1 is raised to fit the shaft 3 into the recess 18. In this state, the shaft 3 is located on one end side of the recess 18, and the line connecting the upper and lower shafts 3 and 4 is inclined to the left and right,
From this state, the door 1 is placed along the doorway 2 so that the upper and lower shafts 3 and 4 are located on the same vertical line.
Is moved to the other end of the recess 18, that is, to a position where it engages with the engaging portion 21, and then the lid 20 is attached to the top pivot 17 to close the opening 18a.

In such a mounting operation of the door 1, even after the upper shaft 3 is fitted into the recess 18 and moved to a position where it engages with the engaging portion 21, the door 1 is released even if the hand is released from the door 1. Normally, the lower shaft 4 on the handle side opposite to the pivot side
Gravity is applied so that the shaft 3 tilts about the fulcrum.
It will remain stationary at the position where it has been engaged with, will not come off from the recess 18, and the subsequent work can be performed easily.

[0012]

As described above, according to the present invention, by providing the upper frame side top pivot for fitting and supporting the upper shaft with the engaging portion for engaging the shaft fitted in the concave portion, Even if you remove your hand from the door after inserting the shaft, the shaft will not come off from the recess and you can prevent the door from falling down.
Subsequent work can be easily performed.

[Brief description of drawings]

FIG. 1 is a front view of a door mounting portion according to an embodiment of the present invention.

FIG. 2 is an enlarged front view of an upper end supporting portion of the door.

FIG. 3 is an enlarged side view of an upper end supporting portion of the door.

FIG. 4 is an enlarged plan view of an upper end supporting portion of the door.

FIG. 5 is a plan view of a door-side top pivot.

FIG. 6 is a bottom view of the door-side top pivot with the cover removed.

FIG. 7 is a side sectional view of a door-side top pivot.

FIG. 8 is an exploded perspective view of an upper frame side top pivot.

FIG. 9 is a schematic plan view showing a state in which the shaft of the door side top pivot is fitted into the recess of the upper frame side top pivot.

[Explanation of symbols]

 1 Door 2 Entry / Exit Portion 3 Shaft 4 Shaft 5 Bearing Fitting 7 Door Side Top Pivot 8 Mounting Plate 10 Main Body 11 Stopper Fitting 11a Recess 12 Spring 13 Ball 17 Top Frame Side Top Pivot 18 Recess 18a Opening 19 Screw 20 Lid 21 Engagement Piece 22 Projecting piece 24 Upper frame

Claims (1)

[Scope of utility model registration request] 1. A hinge device for rotatably supporting a door at an entrance / exit portion, wherein a door-side top pivot attached to an upper end of the door and an upper frame side of the entrance / exit portion so as to face the door-side top pivot. The upper frame side top pivot attached to the upper frame side top pivot is attached to the door side top pivot at a position protruding from the door so as to be rotatable, and the upper frame side top pivot is provided with a recess for inserting the shaft from the front side. A hinge for a door, which is provided with an engaging portion that engages with a shaft fitted in the recess, and a lid that closes an opening of the recess on the top pivot on the upper frame side.