JPH0448311Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automatic hinge that automatically closes an opened door.

<Prior Art> Conventional automatic door closing devices not only are long and unsightly, but also have the disadvantage that they require a considerable amount of force to open and close.

<Problems to be solved by the invention> This invention uses a spiral spring to solve the problem.
The objective is to provide an automatic hinge that is small, inexpensive, and beautiful, that can be easily closed even when the door is opened nearly 360 degrees, and that the speed of opening and closing the door can be adjusted by adjusting the spring strength.

<Means for Solving the Problem> As shown in FIGS. 1, 2, and 3, the means for solving the problem according to the present invention includes a connecting shaft 2 in which a vertical groove 1 is formed and a flange 3 attached to the central part, and the flange 3. A plurality of small holes 3', 3'', 3 bored in a part of the periphery of the 3', and an upward protrusion detachably engaged with any one of these small holes 3', 3'', 3. a lower mounting plate B having a lower shaft hole B1 into which a child 6 is implanted and into which the lower part of the link shaft is fitted; a spiral spring 5 whose base end is engaged with the vertical groove 1 of the link shaft 2; , and an upper mounting plate A having an upper shaft hole A1 in which a locking pin 4 to which the tip of the spring 5 is locked is attached downward, and the upper part of the link shaft 2 is fitted therein.

Furthermore, a ball 7 that is in contact with the upper end of the link shaft 2 in the upper shaft hole A1 is screwed into the female screw portion of the upper shaft hole A1 so that the ball 7 is brought into contact with the upper end of the link shaft 2. It has a lid screw 9 fitted therein.

<Operation> In the above problem solving means, the position of the vertical groove 1 is changed by inserting the upward protrusion 6 of the lower mounting plate B into any of the small holes 3', 3'', 3 of the collar 3. to adjust the strength of the spring 5 when set, and adjust the automatic closing speed of the door 11 to an optimum value.

In addition, when adjusting the screwing degree of the lid screw 9 on the upper mounting plate A, that is, increasing the screwing amount of the lid screw 9, the upper mounting plate A relatively rises, and conversely, the screwing amount of the lid screw 9 is increased. When the amount of filling is reduced, the upper mounting plate A is relatively lowered, so that fine vertical adjustment of the door 11 attached to the upper mounting plate A becomes possible.

Furthermore, the load of the door 11 applied to the lid screw 9 acts on the upper end of the link shaft 2 through the ball 7, but since the ball 7 always rotates smoothly, the door 11 can always be opened and closed smoothly.

<Example> Hereinafter, the first example of the automatic hinge of the present invention will be described as a first example.
Explaining based on Figures 2 and 3, this is the vertical groove 1
The connecting shaft 2 is formed with a flange 3 attached to the center part.
, a plurality of small holes 3', 3'', 3 bored in a part of the periphery of the collar 3, and these small holes 3', 3'', 3.
an upward protrusion 6 that is removably engaged with any one of the
a lower mounting plate B having a lower shaft hole B1 into which a lower part of the linking shaft is fitted; a spiral spring 5 whose base end is engaged with the vertical groove 1 of the linking shaft 2; spring 5
The upper mounting plate A has an upper shaft hole A1 in which a locking pin 4 having a distal end thereof is mounted downward and into which the upper part of the connecting shaft 2 is fitted.

Furthermore, a ball 7 that is in contact with the upper end of the linking shaft 2 in the upper shaft hole A1 is screwed into the female screw portion of the upper shaft hole A1 so that the ball 7 is brought into contact with the upper end of the linking shaft 2. It has a lid screw 9 fitted therein.

Further, 8 indicates a screw hole, 10 indicates a spring cover, 11 indicates a door, and 12 indicates a pillar.

Since the embodiment of the present invention is constructed as described above, when the upper and lower mounting plates A and B are attached to the door 11 and the pillar 12 and the door 11 is opened, elastic energy is accumulated in the spring 5, and the user can remove the door from the door 11. Door 1 by releasing
1 can be closed automatically.

In addition, by inserting the upward protrusion 6 of the lower mounting plate B into any of the small holes 3', 3'', and 3 of the collar 3, the position of the vertical groove 1 can be changed and the position of the vertical groove 1 can be changed when the spring 5 is set. The strength is adjusted and the automatic closing speed of the door 11 is adjusted to an optimal value.

Further, the collar 3 is mounted on the connecting shaft 2 and is engaged with the connecting shaft 2 so that the spring 5 is placed on the collar 3, so that the spring 5 is stabilized and the operation of the spring 5 becomes smooth.

In addition, the base end of the spring 5 is locked in the vertical groove 1 of the link shaft 2, and the tip of the spring 5 is locked in the locking pin 4 of the upper mounting plate A, so it is sturdy and will not come off. be.

Moreover, since a spiral spring is used, even if the door 11 is opened nearly 360 degrees, it can be easily closed.

Furthermore, when the screwing degree of the lid screw 9 on the upper mounting plate A is adjusted, that is, when the screwing amount of the lid screw 9 is increased, the upper mounting plate A relatively rises.
On the other hand, when the screwing amount of the lid screw 9 is reduced, the upper mounting plate A is relatively lowered, so that the door 11 attached to the upper mounting plate A can be finely adjusted up and down.

In addition, the load of the door 11 applied to the lid screw 9 is applied to the upper end of the connecting shaft 2 through the ball 7, and from the lower end of the connecting shaft 2 to the lower mounting plate B, but the ball 7 always rotates smoothly and the upper shaft Since the peripheral wall of the hole A1 also rotates while being guided by the upper part of the connecting shaft 2, the door 11 can always be opened and closed smoothly.

<Effect of the invention> As is clear from the above explanation, in the present invention, the strength of the spiral spring is increased by inserting the upward protrusion of the lower mounting plate into a small hole in the collar of the link shaft. It is possible to adjust the automatic closing speed of the door to the optimum value. Furthermore, since the spring is engaged with the connecting shaft so that it is placed on the collar, the spring is stable and its operation is smooth.Since a spiral spring is used, the spring can be rotated almost 360 degrees. Even if the door is opened, it is easy to close it. Furthermore, by adjusting the screwing degree of the lid screw on the upper mounting plate, it becomes possible to finely adjust the vertical position of the door attached to the upper mounting plate. Furthermore, the load of the door on the lid screw acts on the upper end of the linking shaft through the ball, but the ball always rotates smoothly, so the door can always be opened and closed smoothly.
It can be manufactured at low cost and has excellent practical effects.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of the hinge of the present invention;
The figure is a bottom view, and FIG. 3 is an exploded perspective view. A... Upper mounting plate, B... Lower mounting plate, 1... Vertical groove, 2... Interlocking shaft, 3... Tsuba, 3', 3'', 3...
Small hole, 4... Locking pin, 5... Spring, 6... Upward projection, 7... Ball, 9... Lid screw, 11... Door, 1
2... Pillar.

Claims (1)

[Claims for Utility Model Registration] A linked shaft in which a vertical groove is formed and a flange is attached to the center in the vertical direction, a plurality of small holes drilled in a part of the periphery of the flange, and any of these small holes. a lower mounting plate having a lower shaft hole in which an upward protrusion that is removably engaged is implanted and into which the lower part of the linking shaft is fitted; an upper mounting plate having an upper shaft hole in which a locking pin, which locks the tip of the spring, is attached facing downward and into which the upper part of the linking shaft is fitted; A ball abutting the upper end of the linking shaft within the shaft hole; and a lid screw screwed into the female threaded portion of the upper shaft hole so as to bring the ball into contact with the upper end of the linking shaft. An automatic hinge characterized by: