JPH068657U - Door hinge structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the sealing performance of the pivotal joint side to the wall of the door when the door is closed. [Structure] It is swingably supported by a wall portion A, and its free end portion is a door C.
A first hinge fitting 2 swinging in the opening and closing direction, a second hinge fitting 3 fixed to the door C and swingably supported by a free end portion of the first hinge fitting 2, and the first hinge fitting. Two
And a thumbscrew 4 for swinging and biasing the pivotally supporting portion of the second hinge fitting 3 in the closing direction of the door C.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a hinge structure of a door that supports swinging freely.

[0002]

[Prior art]

 Generally, a door that opens and closes the opening of a box is composed of a base side hinge fitting fixed to the box and a swing side hinge fitting that is swingably supported on the base side and fixed to one end of the door. A hinge member that is swingably supported by the box, and a lock member that locks the door when the door is closed is provided on the free end side of the door. Is pressed against the wall of the box to seal the opening.

[0003]

[Problems to be solved by the device]

 By the way, at the time of closing the door supported by the hinge having the above structure, even if the door is brought into pressure contact with the wall portion by the locking operation of the locking member, the door is pivotally attached to the box. The pressure contact force is different on the free end side of the door. That is, since the hinge member regulates the position of the door with respect to the wall portion on the side of the door that is pivotally attached to the box, when the lock member is locked, the door does not move. Compared with the amount of movement of the end side closer to the wall, the amount of movement of the pivot side of the door closer to the wall is smaller, so that the pressure contact force of the pivot side to the wall is smaller than that of the door. It is inevitably lower than that on the free end side, so it is difficult to ensure sufficient sealing performance on the pivotally attached side of the door.

The present invention has been developed in view of the above circumstances, and an object of the present invention is to provide a door capable of reliably sealing the pivot side of the door when the door is closed. To provide the hinge structure.

[0005]

Means for Solving the Problems The present invention, however, is a hinge structure for a door that opens and closes an opening B formed in a wall A, and is capable of swinging near the opening B in the wall A. A first hinge fitting 2 supported and having a free end swingable in the opening / closing direction of the door C, and a first hinge fitting fixed to the door C and swingably supported on the free end of the first hinge fitting 2 described above. Two hinge metal fittings 3 and a biasing means 4 for biasing the pivotal support portion of the second hinge metal fitting 3 in the first hinge metal fitting 2 in the closing direction of the door C are provided. It is a thing.

The first hinge fitting 2 is swingably supported by a base member 1 formed separately, and an urging means 4 is provided between the first hinge member 2 and the base member 1. good.

[0007]

[Action]

 According to the present invention, when the door C is closed, the pivotal support portion of the second hinge metal fitting 3 in the first hinge metal fitting 2 together with the second hinge metal fitting 3 is accompanied by the operation of the biasing means 4. By swinging the door C in the closing direction, the pivot side of the door C with respect to the wall A can be pressed against the wall A.

According to the present invention, the first hinge member 2 is swingably supported by the base member 1 which is separately formed, and the biasing means 4 is provided between the first hinge member 2 and the base member 1. By providing the above, the first and second metal fittings 2 and 3 and the urging means 4 are assembled to the base member 1, and setting to the wall portion A is performed by setting the base member 1 to the wall portion 1. It can be done simply by fixing to.

[0009]

【Example】

 The drawing shows an opening B for loading and unloading materials into and out of a wall A of a so-called dry box in which a nitrogen atmosphere is used for the work, and a door C for opening and closing the opening B. Is swingably supported on the wall portion A by the hinge structure according to the present invention. The hinge structure will be described below.

The hinge shown in the figure is basically a base member 1 fixed near the opening B in the wall A, and swingably supported by the base member 1, and its free end is the door. A first hinge fitting 2 swinging in the opening and closing direction, a second hinge fitting 3 fixed to the door C and swingably supported by a free end portion of the first hinge fitting 2, and the first hinge. A thumbscrew 4 is provided as a biasing means for biasing the pivot portion of the second hinge fitting 3 of the fitting 2 in the closing direction of the door C.

The base member 1 includes a substrate 11 fixed to the outer surface of the wall portion A by a screw 10 via a liner D, and a pair of opposed pieces 12 facing each other, and fixed on the substrate 11. It comprises a pivot body 13 having a U-shaped cross section and a support plate 14 which is fixed on the base plate 11 and supports the thumbscrew 4 only in a freely rotatable manner. The support plate 14 is provided at its free end with the support plate 14. A slit 15 that opens at the free end of 14 is provided.

The first hinge member 2 includes a pair of side walls 21 facing each other and a connecting wall 22 connecting upper ends of the both wall portions 21, and the longitudinal middle portions of the both side walls 21 are connected to the base. The member 1 is interposed between the facing pieces 12 of the pivot body 13, and the both side walls 21 are supported by the facing piece 13 via the first supporting shaft 5a, and the free end of the side wall 21 is of the door C. It swings in the opening direction (arrow X direction in FIG. 1) to the closing direction (arrow Y direction in FIG. 1).

Further, an insertion hole 23 for inserting the screw shaft portion 41 of the thumbscrew 4 is formed on one end side in the length direction of the connecting wall 22, and a nut 24 communicating with the inserting hole 23 is formed in the connecting wall 22. And the screw shaft portion 41 of the thumbscrew 4 is screwed to the nut 24 through the communication hole 23.

On the other hand, the second hinge fitting 3 connects a pair of support walls 31 overlapping one end in the lengthwise direction of the both side walls 22 of the first hinge fitting 2 and one end of the support wall 31. , A fixed wall 32 fixed to one end of the door C by a screw 30, and the support wall 31 is pivoted to one end side in the length direction of both side walls 21 of the first hinge fitting 2 via a second support shaft 5b. The free end side of the door C swings in the opening / closing direction of the door C.

The screw shaft portion 41 of the thumbscrew 4 screwed to the nut 24 has a neck portion 42 having a diameter smaller than the outer diameter of the screw shaft portion 41 by partially cutting out the outer peripheral surface of the free end portion. The neck portion 42 is fitted into the slit 15 of the support plate 14 in the base member 1, the thumbscrew 4 is supported rotatably only on the support plate 14, and by tightening the thumbscrew 4, The first support shaft 5a is used as a fulcrum to pivotally urge the pivotally supporting portion of the second hinge fitting 3 of the first hinge fitting 2 in the closing direction of the door C.

Incidentally. In the figure, E indicates a packing provided inside the door.

Thus, the door C supported on the wall portion A of the dry box is opened and closed by swinging the second hinge fitting 3 with respect to the first hinge fitting 2, and the door C is When the first hinge fitting 2 is closed, the first hinge fitting 2 swings counterclockwise in FIG. 1 with the first support shaft 5a as a fulcrum, and the first hinge fitting 2 moves. The pivot portion of the second hinge fitting 3 swings together with the second hinge fitting 3 in the closing direction of the door C (direction of arrow Y in FIG. 1), and accordingly, the hinge side of the door C moves. The sealing performance on the pivot side of the door C is further improved by being pressed against the wall portion A through the packing E.

In the above embodiments, the thumbscrew 4 is used as the biasing means for swinging and biasing the pivotal support portion of the second hinge fitting 3 of the first hinge fitting 2 in the closing direction of the door C. However, the present invention is not limited to this, and for example, the base member 1 rotatably supports an operating body provided with a cam surface, and the first hinge metal fitting is rotatably operated by the operating body through the cam surface. The pivoting portion of the second hinge fitting 3 in 2 may be urged to swing in the closing direction of the door C.

In the above embodiment, the base member 1 separately formed on the wall portion A is fixed and the first hinge fitting 2 is swingably supported on the base member 1. A support flange for supporting the first hinge fitting 2 may be integrally formed with C, and the first hinge fitting 2 may be directly swingably supported on the wall portion A via the support flange.

Further, in the above embodiments, the hinge according to the present invention is applied to the door C that opens and closes the opening B of the dry box, but the present invention is not limited to this, and is applied to, for example, the door of a building entrance. You may.

[0021]

[Effect of device]

 As described above, according to the present invention, the first hinge fitting 2 that is swingably supported by the wall A and has the free end swinging in the opening and closing direction of the door C, and the first hinge fitting 2 fixed to the door C and the first hinge metal fitting 2 is provided. The second hinge fitting 3 swingably supported on the free end of the first hinge fitting 2 and the pivotal support portion of the second hinge fitting 3 of the first hinge fitting 2 swing in the closing direction of the door C. By providing the urging means 4 for urging, when the door C is closed, the pivotal support portion of the second hinge fitting 3 in the first hinge fitting 2 is moved along with the operation of the urging means 4. Since it is possible to swing and urge the door C in the closing direction of the door C together with the second hinge fitting 3, the pivot side of the door C with respect to the wall portion A is in pressure contact with the wall portion A, and The sealing performance on the pivot side is improved.

Further, according to the present invention, the base member 1 fixed to the wall portion A is provided, the first hinge member 2 is swingably supported on the base member 1, and the first hinge member 2 and By providing the biasing means 4 between the base member 1 and the base member 1, the first and second metal fittings 2 and 3 and the biasing means 4 are assembled to the base member 1, so that the wall portion A can be set. It can be performed by a simple operation of fixing the base member 1 to the wall portion 1.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of a hinge structure for a door according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

[Explanation of symbols]

 1 Base member 2 1st hinge metal fitting 3 2nd hinge metal fitting 4 Thumbscrew (biasing means) A wall part B opening part C door

Claims (2)

[Scope of utility model registration request] 1. A hinge structure for a door that opens and closes an opening B formed in a wall portion A, which is swingably supported near the opening portion B in the wall portion A, and has a free end portion which is the door C. A first hinge fitting 2 swinging in the opening and closing direction, a second hinge fitting 3 fixed to the door C and swingably supported by a free end portion of the first hinge fitting 2, and the first hinge fitting. 2. A hinge structure for a door, comprising: a biasing means 4 for swinging and biasing a pivotally supporting portion of the second hinge fitting 3 in 2 in a closing direction of the door C. 2. A base member 1 fixed to the wall portion A,
The first hinge member 2 is swingably supported on the base member 1, and the first hinge member 2 and the base member 1 are also supported.
The hinge structure for a door according to claim 1, wherein a biasing means (4) is provided between and.