JPH0139346Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a pivot hinge for rotatably supporting a door on the side of a building. The purpose is to be able to confirm whether

Conventionally, when attaching a pivot hinge to the upper end of a door and fitting the shaft of the pivot hinge into a bearing on the upper frame side of a building, it was impossible to know exactly how far the pivot hinge was fitted into the bearing on the upper frame side of the building, and it was necessary to rely on intuition. In this case, if the shaft of the pivot hinge and the bearing are not fully fitted, there is a risk that the door may come off.

The present invention has been devised to address this problem, and makes it possible to easily determine the state of engagement between the shaft of the pivot hinge and the bearing. The present invention will be explained below based on drawings showing an example of implementation.
In the figure, 1 is attached to one side of the upper end of door 2.
It is a horizontal pivot hinge plate that is fixed flush with the upper end surface with screws, and the vicinity of one end of an arm 4 is pivotally supported on the lower surface of the plate 1 with a horizontal shaft 3. Reference numeral 5 denotes a cylindrical guide fixed to the plate 1 so as to protrude from the lower surface thereof. The lower end of this guide 5 is closed by a cap 6, and the lower end of a coil spring 7 is in contact with the cap 6 inside the guide 5. It is provided. Reference numeral 8 denotes a vertically directed shaft whose lower end is received by the upper end of the coil spring 7 within the guide 5. It is adapted to protrude above the plate 1 from the upper end. By the way, the guide 5 and the shaft 8 are located at one end of the plate 1, the pivot portion of the arm 4 is located near the other end of the plate 1, and the other end of the arm 4 is connected to the guide 5 near the upper end. The shaft 8 is engaged with the shaft 8 through a long groove 9 formed with an appropriate length downwardly. Reference numeral 10 denotes an arcuate recess formed from above at one end of the arm 4, into which a lower spherical portion 12 of a male threaded body 11 screwed into the plate 1 is engaged.
The male threaded body 11 is screwed into a female threaded hole 13 formed in the plate 1, and a screwdriver or the like is engaged from above the plate 1 with a groove 14 at the upper end of the male threaded body 11 to rotate the male threaded body 11 and move it up and down. It is designed to be able to move. Furthermore, 15 is the arm 4
is a confirmation protrusion protruding from the upper side of the middle part of the plate 1. When the arm 4 is in the solid line state in FIG. It's starting to fit in.

The pivot hinge constructed as described above is embedded and fixed flush with the upper end surface of the door 2 such that the shaft 8 is located on one side of the upper end of the door 2. Building 17 at the door attachment part
A bearing plate 19 is fixed to the lower surface of the side upper frame 18 flush with the upper frame 18 with screws, and a cap-shaped bearing 20 into which the shaft 8 of the pivot hinge is fitted is mounted on the bearing plate 19. It is being Therefore, when attaching the door 2 to the building 17 side, the door 2 cannot be set in a predetermined position unless the shaft 8 is retracted into the guide 5. Therefore, the uniform groove portion 14 of the male threaded body 11
By engaging the tip of the screwdriver with the screwdriver and rotating the male threaded body 11 to the left, the male threaded body 11 is raised, and the arm 4 is thereby raised via the lower end spherical portion 12.
By lifting one end, the other end of the arm 4 moves downward as shown by the two-dot chain line in FIG. 1, and the shaft 8 is moved against the coil spring 7 as shown by the two-dot chain line in FIG. the guide 5. In this state, set the door 2 on the side of the building 17, align the center of the shaft 8 with the center of the bearing 20, leave the door 2 in a half-open state, and use a screwdriver to insert the male threaded body 11 from above the door 2. When the male threaded body 11 is lowered by rotating clockwise, the other end of the arm 4 rises and the shaft 8 is fitted into the bearing 20. At this time, the protrusion 15 fits into the through hole 16 from below, and the fitting between the shaft 8 and the bearing 20 can be confirmed. That is, when the protrusion 15 fits into the through hole 16, the shaft 8 and the bearing 20 are fitted together.

By the way, the lower end of the door 2 is supported on the building side by bearing means (not shown) located on the same vertical line as the shaft 8, so that the door 2 is rotatably supported.

The door 2 can be removed by rotating the male threaded body 11 counterclockwise and raising it, thereby lowering the other end of the arm 4 and the shaft 8.

The pivot hinge of the present invention can be implemented as described above, and when the protrusion provided on the arm fits into the through hole of the pivot hinge plate, the shaft of the pivot hinge fits into the bearing on the building side, and the door is secured. It can be easily confirmed that the door is supported, and the door does not come off due to incomplete support as in the conventional case. It is also possible to provide the pivot hinge of the present invention on the building side, provide the bearing on the door side, and fit the shaft of the pivot hinge on the building side into the bearing on the door side.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention.
The figure is a front view, the second figure is a plan view, the third figure is a side view,
FIG. 4 is a side sectional view. DESCRIPTION OF SYMBOLS 1...Plate, 2...Door, 3...Horizontal axis, 4...Arm, 5...Guide, 7...Coil spring, 8...Shaft, 9...Long groove, 10...Circular recess, 11 ... Male screw body, 12 ... Lower end spherical part, 1
3...Female screw hole, 14...Single groove, 15...Protrusion, 16...Through hole, 17...Building, 18...Upper frame, 19...Bearing plate, 20...Bearing.

Claims (1)

[Scope of utility model registration request] A horizontal plate attached to the upper end of the door or the building side opposite to the upper end of the door, a vertically oriented cylindrical guide protruding from the lower surface or upper surface of this plate, and a cylindrical guide located below or above the plate. an arm having a vicinity of one end pivoted about a horizontal axis; a male threaded body that is screwed into a female threaded hole provided in the plate to move up and down and rotatably engage the arm; and the other end of the arm; a shaft that is connected to the shaft and is movable up and down within the cylindrical guide, and further includes a projection on the arm that fits into a through hole formed in the plate when the shaft projects a required amount above or below the plate. A pivot hinge with a