JP2000160921A - Door opening/closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door moved in a right-angled direction to an opening part of an art object display case to close the opening part and opening the front of the opening part in the open state. SOLUTION: One end side of a door 4 for closing an opening part of a case body is fitted to the case body by a plurality of two-shaft hinges 5, 6 having rotary shafts at both ends. Two kinds of two-shaft hinges are used as the two- shaft hinges, which are the long-sized two-shaft hinge 5 long in the distance between the rotary shafts, and the short-sized two-shaft hinge 6 short in the distance between the rotary shafts. Rotary shaft support plates provided on one end side of both hinges 5, 6 are fitted to the back face of the door 4, and rotary shaft support plates on the other end side are fitted to the inner side face of the case body. Connecting members between the rotary shafts of both hinges 5, 6 are bent to avoid interference with the opening edge of the case body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing mechanism for an art display case or the like.

[0002]

2. Description of the Related Art FIG. 1 shows a desirable case for displaying works of art, the case having an open front and a door (4) covering the front so that the front can be opened and closed. I have. The body (1) of the case has a base (2) at the bottom,
The upper part is a transparent display part (3), and the base part (2) and the transparent display part (3) are separated by the display base (10). In the transparent display section (3), the left and right walls, the rear wall, and the ceiling wall are formed of transparent plates. The left and right walls, the rear wall, and the bottom wall of the base portion (2) are formed of metal plates. The upper part of the door (4) attached to the opening of the main body (1) is formed of a transparent plate (42) like the transparent display part (3), and the lower part is formed of a metal plate (41). Door (4)
The opening and closing support mechanism is housed inside the base portion (2) so as not to obstruct the viewing of the exhibits.

Here, a single-axis hinge (8) shown in FIG. 7 or a two-axis hinge (9) shown in FIG. 8 is often used for the opening and closing support mechanism of the door (4). If so, the following problem occurs. When using the single axis hinge (8) shown in FIG.
Even when the (4) is closed, a part of the hinge (8) is exposed to the outside and impairs the appearance. Also, when a gasket is provided around the opening edge of the main body (1) and the gasket is pressed by the door (4) to block the outside air, the hinge (8) hinders the installation of the gasket.

When the biaxial hinge (9) of FIG. 8 is used, the door (4)
Turns around the rotation axis (91), but the door (4)
When the door is open, the door is
Since (4) can swing, there is a problem that the edge of the door hits the opening edge of the main body (1).

Further, in this type of display case, a gasket (not shown) is attached to the opening of the main body (1) in order to keep the humidity and temperature in the case constant, and the gasket is attached to the back of the door (4). It is desirable to adopt a structure of pressing with. in this case,
At the beginning of opening and closing of the door (4), the door (4) can be moved in a direction parallel to the opening surface of the main body and in a direction perpendicular to the opening surface to protect the gasket and maintain airtightness. It is desirable from the point of view. However, the single axis hinge of the door of FIG.
This cannot be realized by the opening / closing mechanism according to (4). 8 in FIG.
In the opening / closing mechanism using the shaft hinge (9), when the door (4) is opened and closed, the angle of the door (4) with respect to the opening surface is not constant, and the base edge or the rotating edge of the door (4) is inadvertently set in the main body ( The problem 1) arises. The present invention clarifies a door opening / closing mechanism that can solve the above problem.

[0006]

A door opening and closing mechanism according to the present invention comprises a main body.
One end of a door (4) that closes the opening of (1) is attached to the main body (1) by a plurality of biaxial hinges (5) and (6) having rotation axes at both ends, and the biaxial hinge is connected between the rotation axes. The long two-axis hinge (5) with a long distance between the two and the short two-axis hinge (6) with a short distance between the rotation axes
The rotation shaft support plates (55) and (65) at one end of both biaxial hinges (5) and (6) are attached to the back surface of the door (4), and the rotation shaft support plates (54) (54) ( 64) is attached to the inner surface of the main body (1), and the connecting members (51) (61) between the rotating shafts of the hinges (5) and (6) are:
It is bent to avoid interference with the edge of the body (1).

[0007]

[Function and effect] Long two-axis hinge with a long distance between rotation axes
Since the door (4) was attached to the main body (1) by two types of hinges (5) and a short biaxial hinge (6) having a short distance between the rotation axes,
The door (4) has a trajectory E drawn by the opening and closing rotation of the door by the moving rotation axis (63) of the short two-axis hinge (6) and the movement rotation of the moving rotation axis (53) of the long two-axis hinge (5). It is opened and closed while changing its posture so that the distance between the two moving rotary shafts (53) and (63) is always constant on the locus F drawn by the shaft (53). Therefore, unlike the case where the door is attached with one kind of two-axis hinge, the door does not swing freely during the opening and closing and the open position, and does not accidentally collide with the main body (1). or,
Even when a gasket is provided around the opening edge of the main body (1),
Since the shaft hinges (5) and (6) can be attached to the inside positions deviated from the peripheral part of the gasket, the biaxial hinges (5) and (6) do not hinder the peripheral arrangement of the gasket.

Further, since the two-axis hinges (5) and (6) are bent to avoid interference with the main body (1), the door (4) is moved to the side with respect to the opening and the door (4). 4) can be fully opened by approaching the side surface of the main body (1), and the front of the opening of the main body (1) can be opened as much as possible, so that articles can be easily taken in and out of the opening. Further, the inconvenience of the door (4) protruding largely outward from the side surface of the main body (1) and colliding with another adjacent display case can be eliminated.

By optimally selecting the mounting positions of the biaxial hinges (5) and (6), the closing and opening of the door (4) are substantially parallel to the opening of the main body (1) and the main body (1). ) Can move the door (4) at an angle close to 90 ° with respect to the opening surface, so that the gasket (11) attached to the opening edge of the main body (1) or the outer periphery of the door (4) can be smoothly moved without being damaged. Can be opened and closed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An upper transparent display section (3) of a main body (1).
The front ends of the transparent side plates (31) and (31) protrude slightly forward from the opening surface of the lower base portion (2) of the main body (1), and the front end surfaces of the side plates extend outwardly by 45 °. An elastic gasket (11) is formed on the slope (30), and the elastic gasket (11) is bonded and fixed to the slope (30).

A gasket (11) is similarly bonded and fixed to the front end of the transparent ceiling plate of the transparent display section (3). Base part
A gasket (12) is also mounted on the upper end of the opening edge of (2).

The outer peripheral end surface of the transparent front plate (42) of the door (4) is
The transparent side plate (31) of (1) and a slope (40) of 45 ° corresponding to the slope (30) of the end face of the ceiling plate are formed. When the door (4) is closed, the transparent display section (3) is opened. The gasket (11) is pressed against the slope (40) of the upper transparent front plate (42) of the door (4), and the gasket (12) of the base part (2) is the inner surface of the lower front plate (41) of the door (4). Pressed to the outer periphery, the transparent display section (2) is shut off from the outside air.

[0013] The door (4) is fixed to the base (2).
It is supported by two long biaxial hinges (5) and two short biaxial hinges (6) so as to be openable and closable.

A shaft support plate (54) at one end of a long biaxial hinge (5)
Is fixed to the inner surface of the side wall of the base portion (2) between the two short biaxial hinges (6) and (6) and at a position deeper than the short biaxial hinges (6). The shaft support shaft (5) at the other end of each biaxial hinge (5) (6)
5) (65) is fixed to the back surface of the door (4). The door-side moving rotary shaft (53) of the long biaxial hinge (5) is located closer to the free end of the door (4) than the moving rotary shaft (63) of the short biaxial hinge (6).

The above-mentioned long biaxial hinge (5) and short biaxial hinge (6)
As shown by a two-dot chain in FIG. 2, the door (4) rotates approximately 90 ° with respect to the opening surface of the main body (1), and the pivot-side end of the door (4) is the side wall of the main body (1). Are fully opened so as to overlap with each other, and are bent so as not to interfere with the main body (1). If the installation position of the long biaxial hinge (5) and the short biaxial hinge (6) is inappropriate, the door
The door cannot be opened or closed due to the interference between (4) and the body (1),
When opening and closing (4), the end face of the door (4) is the gasket of the body (1).
The gasket (11) may be twisted or peeled off due to excessive rubbing of the (11), resulting in damage.

When the front end surface of the side plate and the ceiling plate of the transparent display part (3) is an outwardly extending slope (30), as in the door (4) of the embodiment, when the door (4) starts to open. Until the door is located outside the front end of the slope (30), the door (4) is in a state parallel to the opening surface of the main body (1) and as shown by an arrow a in FIG. Ideally, it should be moved straight in the vertical direction with respect to the opening surface of (1). Even in the worst case, FIG.
If the door is not moved at an angle of not less than 45 ° and not more than 135 ° as indicated by the arrow C, the gasket (11) will be damaged.
Considering safety, 53 ° or more, indicated by arrow B, 127 °
It is desirable that the direction be within. In the structure where one end of the door (4) is attached by the hinges (5) and (6), the ideal of moving the door (4) at the above 90 ° is not realized. It can be cleared.

The mounting positions of the long two-axis hinge (5) and the short two-axis hinge (6) can be obtained on the figure as four links mechanically. That is, in FIG.
Is a fixed link of “52”-“62”. Link 2
Is "52"-"53", and swings with 52 as a pivot point. Link 3 is "62"-"63",
It swings with 62 as a pivot point. Link 4 is "53"-
It is “63”, and both ends are pivotally supported by the link 2 and the link 3 to rotate. When the door is in the closed position, link 1 and link 4
Is a right angle. When the door is in the open position, link 1 and link 4 are parallel. Move the link under this condition, link 3
The shape of the link is curved so as not to contact the gasket of the main body.

In the embodiment, the link 1 is 63 mm, the link 2 is 160 mm, the link 3 is 45.5 mm, the link 4 is 106.5 mm, and the pivot point "63" of the link 4 is a point "62" on the side wall of the main body.
41.5 mm horizontally and 18 mm vertically.

The main body (1) and the door (4) are provided with a door (4).
A known locking device (7) is provided to lock the door (4) while pressing the gaskets (11) and (12). The lock device (7) is composed of a lock device main body (71) fixed to the inner surface of the main body (1) and a ring (78) fixed to the inner surface of the door (4).

The lock device main body (7) shown in FIGS.
In the bracket (72) having the door (4) side opened and a notch (72a) opened in the door (4) side, the lock lever is arranged in order from the door (4) side to the back side of the main body (1). (73), the intermediate lever (74), and the lock release lever (75) are respectively connected to the pivots (73a) (74a) (7
5a) is pivotally supported in the same plane, and each pivot (73
a) The lock lever (73) is counterclockwise, the intermediate lever (74) is clockwise, and the lock release lever (75) is counterclockwise by a torsion spring (not shown) fitted to (74a) (75a). Being energized.

At one end of the lock lever (73), a notch (73b) is formed at the standby position to overlap the notch (72a) of the bracket (72), and a projection (73c) is formed at the other end. Intermediate lever (7
A protrusion (74b) is formed at one end of the lock lever (73) that rotates clockwise to catch the protrusion (73c) of the lock lever (73) and prevents the lock lever (73) from returning. A portion (74c) is formed. Intermediate lever (74) at one end of lock release lever (75)
When the lever rotates clockwise, the protrusion (74) of the intermediate lever (74)
A projection (75b) abutting on c) is formed, and an arm (75c) bent at a substantially right angle is provided on the other end.

When the door (4) is closed, the ring (78) on the inner surface of the door (4) fits into the notch (72a) of the bracket (72) and the notch (73b) of the lock lever (73), and the lock lever (73) is inserted. Rotate 73) clockwise against the spring. Lock lever (73) projection (73
c) pushes up the protrusion (74b) of the intermediate lever (74),
When it exceeds (74b), it tries to return in the counterclockwise direction by the spring force, but is stopped by the projection (74b) of the intermediate lever (74),
The ring (78) does not come out of the notch (72a) of the bracket (72), and the door (4) is locked in the closed state.

An unlocking rod (76) is inserted through a through hole (43) opened in the door (4), and an arm (75) of an unlocking lever (75) is inserted.
Pressing (c) rotates the unlock lever (75) clockwise, and the protrusion (75b) of the unlock lever (75) moves to the intermediate lever.
The intermediate lever (74) is rotated counterclockwise by pressing the projection (74c) of (74). As a result, the hooks of the protrusions (74b) and the protrusions (73c) of the intermediate lever (74) and the lock lever (73) are released,
The lock lever (73) rotates counterclockwise and returns to the original position. As a result, the ring (78) is cut out (72a) of the bracket (72).
The door (4) is unlocked.

When the door (4) is locked, the ring (78) is
When the lock lever (73) rotates downward to prevent the ring (78) from being pulled out after entering the notch (72a) of the
8) advances slightly in the closing direction of the door (4). The amount of advance serves as a force for pressing the gaskets (12) and (11) of the base part (2) and the transparent display part (3).

As described above, the door opening / closing mechanism of the present invention provides a long biaxial hinge (5) having a long distance between the rotating shafts (52) and (53) and a distance between the rotating shafts (62) and (63). The door (4) was attached to the main body (1) by two types of hinges, a short two-axis hinge (6), which was short.
(4) is the locus E of the moving rotary shaft (63) of the short biaxial hinge (6).
And the moving rotation axis (5) of the moving rotation axis (53) of the long biaxial hinge (5).
On the trajectory F of 3), the opening and closing are performed while changing the posture so that the distance between the two moving rotation axes (53) and (63) is always constant. Therefore, unlike the case where the door is attached with one kind of two-axis hinge, the door does not swing freely during the opening and closing and the open position, and does not accidentally collide with the main body (1).

The two types of long and short biaxial hinges (5) and (6) are
(1) Because it is bent to avoid interference
The door (4) can be opened widely so that the front of the opening of (1) can be opened as much as possible, and the door (4) can be opened close to the side surface of the main body (1), and the article to the opening can be opened. The door can be easily taken in and out, and the door can be prevented from protruding largely outward from the side surface of the main body (1).

By optimally selecting the mounting positions of the biaxial hinges (5) and (6), the closing and opening of the door (4) are substantially parallel to the opening of the main body (1) and the main body (1). Since the door (4) can be moved in a direction substantially perpendicular to the opening surface of the gasket (11), even when the gasket (11) is attached to the opening edge of the main body (1) or the outer periphery of the door (4), the gasket (11) is damaged. It can be opened and closed smoothly without any trouble.

In practicing the present invention, an end surface of the door (4) is used.
(40) Both the transparent plate (41) and the metal plate (42) are cut at 45 °, and the end surface (30) of the main body (1) is cut at 45 ° both at the transparent plate (2) and the metal plate (3). In some cases, it can be opened and closed smoothly without any problem.

In carrying out the present invention, gaskets (11) and (12)
May be provided not on the body (1) side but on the door (4) side. In order to adjust the mounting position of the biaxial hinges (5) and (6) to the main body (1) and the door (4), the shaft support plates (54) (55), (64) (65)
It is desirable that the mounting position can be adjusted by a long hole.

The door opening / closing mechanism of the present invention is not limited to the display case of the embodiment, but the application is not limited as long as it relates to a door opening / closing mechanism such as a car rear door opening / closing mechanism. In addition, various modifications are possible within the scope described in the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view of a display case.

FIG. 2 is an explanatory diagram showing a displacement state when a door is opened and closed.

FIG. 3 is a perspective view of a door opening / closing mechanism.

FIG. 4 is an explanatory diagram of the start of opening of a door.

FIG. 5 is a sectional view of the lock device before the door is locked.

FIG. 6 is a sectional view of the lock device in a door locked state.

FIG. 7 is an explanatory view of opening and closing a door by a single-axis hinge.

FIG. 8 is an explanatory view of opening and closing a door by a two-axis hinge.

FIG. 9 is a sectional view of another embodiment of both ends of the door and an opening edge of the main body.

[Explanation of symbols]

 (1) Main body (11) Gasket (2) Base part (3) Transparent display part (4) Door (5) Long two-axis hinge (6) Short two-axis hinge (7) Lock device

Claims (3)

[Claims] 1. A base side of a rotating door (4) for closing an opening of a main body (1) is attached to the main body (1) by a plurality of biaxial hinges (5) and (6) having rotation axes at both ends. A door opening and closing mechanism, wherein the biaxial hinge is a long biaxial hinge having a long distance between rotating axes.
(5) and two types of short biaxial hinges (6) with a short distance between the rotating shafts are used. One end of each of the biaxial hinges (5) and (6) is rotatably attached to the back of the door (4). The other end is rotatably attached to the inner surface of the main body (1), and the connecting members (51) (61) between the rotation shafts of the hinges (5) and (6) are connected to the opening edge of the main body (1). Door opening / closing mechanism that is bent toward the main body to avoid interference. 2. A gasket (11) is provided on an opening edge of the main body (1) or on an outer peripheral edge of the door (4), and the main body (1) and the door (4) are closed by pressing the gasket (11). A lock device (7) for locking (4) is provided, and the lock device (7) is provided with a hook ring (78) attached to one of the main body (1) and the door (4), and attached to the other. By pushing the ring (78), the ring (78)
And a lock device body (71) for hooking
The door opening / closing mechanism according to claim 1, wherein the lock to the ring (78) of the lock device main body (71) can be released by inserting an unlocking rod (76) through a through hole (43) opened in the door (4). 3. A localization rotating shaft on a main body side of a long biaxial hinge (5).
(52) is located on the back side of the localization rotation axis (62) on the main body side of the short two-axis hinge (6), and moves on the door side of the long two-axis hinge (5).
(53) is located on the free end side of the door with respect to the moving rotary shaft (63) on the door side of the short biaxial hinge (6), and when the fully closed door (4) starts to open and closes, the door is closed. 45 with respect to the opening surface of the main body (1)
The door opening / closing mechanism according to claim 1 or 2, wherein the door opening / closing mechanism moves within a range of about 135 °.