JPH0532619Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Fields of industrial use]

The present invention relates to a gravity hinge for holding a door in a predetermined stationary position using the door's own weight.

[Conventional technology]

In general, a gravity hinge has a cam surface 2 formed in a bearing hole 1 on the door A side, as shown in FIG.
and a support 3 fixed to the fixed wall B of the door A opening.
By making sliding contact with the cam surface 4 on the side, the weight of the door A is converted into rotational force.The cam surface 4 on the side of the support 3 is formed on the peripheral edge of the shaft portion 5, It was configured to be inserted into the side bearing hole 1.

[Problem that the invention attempts to solve]

However, when the cam surface 4 on the side of the support 3 is formed on the periphery of the shaft portion 5 in this way, the insertion volume into the lower end of the door A increases, which has the disadvantage that it cannot be applied to a thin door A. It was hot. The present invention has been made in order to eliminate such drawbacks, and an object of the present invention is to provide a gravity hinge that can be applied to a thin door A.

[Means to solve the problem]

According to the present invention, the above-mentioned object is achieved by the door A as shown in FIGS. 1 and 2 corresponding to the embodiment.
The support 3 fixed to the fixed wall B of the opening is provided with a support piece 7 that protrudes horizontally and has a fitting recess 6 facing upward, and the cam surface 2 of the bearing hole 1 formed at the lower end of the door A. A shaft body 9 is provided with a cam surface 4 on the upper end of the shaft portion 5 that matches the above, and a holding flange 8 that fits into the fitting recess 6 is formed on the periphery of the shaft portion 5, with the cam surface 4 oriented around the axis. This is achieved by providing a gravity hinge that is attached so that the angle can be changed intermittently as appropriate.

[Effect]

That is, in the present invention, the cam surface 4 on the fixed shaft side is formed at the upper end of the shaft portion 5, so that the insertion area into the rotating shaft is made as small as possible.

【Example】

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The support 3 in the embodiment shown in FIGS. 1 and 2 includes a fixing piece 10 corresponding to the fixing wall B of the opening of the door A, and a supporting piece 7 extending horizontally from the lower end of this fixing piece 10. A fixed piece 10
A screw insertion hole 12 into which a fixing screw 11 is inserted is bored in the hole. The fitting recess 6 formed in the support piece 7 is formed to hold the holding flange 8 of the shaft body 9 and to hold the shaft portion 5 of the shaft body 9 upright. It is formed into a circular shape in view, and a large number of projections and depressions 13, 13, . . . for preventing rotation are engraved on the peripheral wall portion. On the other hand, the shaft body 9 forms a cam surface 4 having a shape that matches the cam surface 2 formed in the bearing hole 1 of the bearing member 14 fixed to the lower end of the door A by cutting the shaft portion 5 diagonally. The outer circumferential wall of the holding flange 8 is detachably attached to the support 3 by a holding flange 8 formed around the periphery of the shaft portion 5, and has a shape in plan view that matches the fitting recess 6 of the supporting piece 7. By protruding the protrusion 15 on the
is engaged with the rotation-preventing unevenness 13 of the fitting recess 6, so that the shaft body 9 is held in a state rotated by an arbitrary angle around the axis, that is, in a state in which the cam surface 4 is faced in an arbitrary direction. It's getting old. As a result, the shaft body 9 is rotated so that the cam surface 4 is directed in an appropriate direction.
By attaching the door A, the door A can be held at an appropriate position, for example, in a closed position or in an open position. The depth or diameter of the fitting between the holding flange 8 and the fitting recess 6 is set so that the shaft 9 does not fall over when the door A is inserted, but as shown in this embodiment, A holding shaft 16 is provided protruding from the back surface of the holding flange 8, and a holding portion 17 is provided protruding from the bottom of the support piece 7.
If the holding shaft 16 is inserted into the hole 18 bored in the shaft 9 to prevent the shaft 9 from falling over, the fitting recess 6 can be made smaller, and the whole can be made smaller. In addition, in order to prevent the shaft body 9 from idling in the installed state, for example, the fitting recess 6 and the holding flange 8 are formed into an equilateral triangular shape, and the cam surface 4 is directed in three different directions. However, if the cam surface 4 is formed so that it can be oriented in multiple directions as in this embodiment, as shown in FIG. etc., by changing the holding position of the shaft body 9, it is possible to absorb this and hold the door A in the normal position, or to finely adjust the holding position of the door A, which is convenient. Alternatively, it is also possible to form rotation-preventing projections and depressions 13 on the bottom surface of the fitting recess 6. Furthermore, in this embodiment, as shown in FIG. 1 and FIG.
By interposing a cylindrical adjustment sleeve 21 screwed onto the holding part 17 between the receiving member 20 fixed above, the load of the door A is not applied to the supporting piece 7, and the supporting member 3 is being reinforced. In addition, in FIG. 4, 22 is an anchor bolt for fixing the receiving member 20 to the floor surface C, and in FIG. This shows the operation hole for the

[Effect of the idea]

As is clear from the above explanation, according to the gravity hinge of the present invention, the cam surface is formed on the upper end of the shaft part of the shaft body, eliminating the need for a large opening of the bearing hole on the door side, so it can be used even for thin doors. Can be installed. Further, since the shaft body is mounted around the axis so that the angle can be changed intermittently as appropriate, the resting position of the door can be easily changed.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing the gravity hinge of the present invention, Figure 2 is a perspective view showing its installed state, Figure 3 is a sectional view showing it fixed to a fixed wall, and Figure 4 is attached to the floor. FIG. 5 is a partially cutaway front view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Bearing, 2, 4... Cam surface, 3... Support tool, 5... Shaft part, 6... Fitting recess, 7... Support piece, 8... Holding flange, 9... Shaft body, A...door, B...fixed wall.

Claims (1)

[Scope of Claim for Utility Model Registration] The support fixed to the fixed wall of the door opening is provided with a support piece that protrudes horizontally and has a fitting recess facing upward. The shaft body has a cam surface that matches the cam surface at the upper end of the shaft part, and a holding flange that fits into the fitting recess is formed on the periphery of the shaft part, and the direction of the cam surface is adjusted intermittently at an appropriate angle around the axis. A gravitational hinge that can be installed and changed to.