JP2001157624A - Display case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display case wherein mechanisms to retract the top and lower parts of a door for open/closure of the front side of the display case can be connected each other so as to be precisely synchronized by means of a simple construction. SOLUTION: A lower support means B and an upper support means A are interconnected by a wire 20 so that the means A follows the forward movement or the rearward movement of the means B, while an urging means is provided for the means A to urge it in a direction opposite to the moving direction as described above, thereby always imparting tension to the wire 20, whereby the means A is caused to follow the movement of the means B in the forward and rearward directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display case used for displaying exhibits such as works of art and cultural properties in art museums and museums, and more particularly to a display case in which the four sides of the display section are made of transparent plates. Door opening and closing device.

[0002]

2. Description of the Related Art As shown in FIG. 9, a display case of this type includes a base (1), a display section (2) provided on the base, and a display section (2) surrounded by a four-sided glass plate. Lid)
(3), and a door (4) made of a glass plate constituting one side of the exhibition section (2) is opened.

A conventional display case of this type is disclosed, for example, in Japanese Patent Publication No. 2-1484 and Japanese Patent Laid-Open No. Hei 10-239.
There is one described in JP-A-49. In the former, the front and rear movement of the door is performed by an upper support and a lower support which are independently and slidably attached to an upper lid and a lower base. In the latter, the front and rear movement mechanisms at the top and bottom of the door are linked by a vertical rod to synchronize the forward movement of the door.

[0004]

However, in the former, as the size of the door increases and the weight increases, the ability to follow the movement of the upper support and the lower support deteriorates, and the door cannot move back and forth smoothly. There is a problem. In the latter case, it is necessary to erect the vertical rod inside the exhibition part, and in proportion to the enlargement and weight increase of the door, the vertical rod becomes thick and rigid, so the appearance inside the exhibition part deteriorates There is a problem.

The present invention has been made in view of the above-described problems, and has a simple structure and a mechanism for linking the doors that open and close the front surface of the display case so that they can be synchronized with each other with a simple configuration. The purpose is.

[0006]

According to the present invention, the above-mentioned problem is solved as follows. (1) It comprises a base, a display part made of a transparent plate provided on the base, and a lid provided on the display part. One side of the display part is a door, and this door is moved in the front-rear direction. In a display case which can be opened and closed by being supported by a base and a lid via lower supporting means and upper supporting means having a retracting mechanism and a horizontal rotating mechanism, respectively, the lower supporting means And the upper support means are linked by a wire so that the upper support means is driven to move in one of the front and rear directions of the lower support means, and the upper support means is moved in a direction opposite to the moving direction. A biasing means for biasing is provided, and the wire is always kept in a tension state, so that the upper supporting means is driven by the bidirectional movement of the lower supporting means in the front-rear direction.

(2) In the above item (1), the urging means may be
It is assumed that the reaction force of the coil spring is used.

(3) In the above item (1) or (2), means for adjusting the strength of the urging force is added to the urging means.

(4) In any one of the above items (1) to (3), the wire is provided so as to penetrate a hollow column standing upright at a corner of the display section.

[0010]

FIG. 1 is a schematic vertical sectional side view of a display case according to an embodiment of the present invention with a door closed, and FIG. 2 is a schematic cross-sectional plan view of a base of the display case. is there. As shown in FIGS. 1 and 2, inside the base (1), a screw rod (6), which can be rotated by a handle (5) from the front, is rotated on a support (7) around its central axis. Mounted as possible.

The screw rod (6) is screwed into a female screw hole formed in the moving member (8), and is rotated by rotation of the screw rod (6).
The moving member (8) can move in the front-back direction.

A relatively wide horizontal rod (9) is attached to the upper surface of the moving member (8) in the front-rear direction, and two vertical shafts (10) are provided at the rear end thereof. Two vertical axes (1
An operating arm (11) extending substantially in the left-right direction is mounted on the upper end of (0). The intermediate part of the operating arm (11)
It is pivotally supported by a pivot (11a) erected on the base (1).

The outer end of the operating arm (11) is axially mounted on the rear end of a short rod (12) extending in the front-rear direction, and the front end is connected to the rear end of the operating rod (13) extending in the front-rear direction. It is connected.

The operating rod (13) is supported in the base (1) so as to be slidable in the front-rear direction, and its front end is connected to the lower end of a door (4) made of glass or acrylic or the like. Supporting horizontal rod
It is attached near the left and right ends of (14). The horizontal rod (9), the operating arm (11), the short rod (12), the operating rod (13), and the horizontal rod (14) form a mechanism for retracting the door (4) on the base (1) side. , Handle (5), screw rod (6), and moving member
(8) and the like form driving means for the retracting mechanism.

At the rear end of the horizontal rod (9), an angle member is provided.
(15) is attached, and a vertical pin (16) is projected from the angle material (15).

Behind the vertical pin (16), a horizontal pulley (17)
Is mounted on the base (1), and a second horizontal pulley (18) is mounted on the base (1) at a position along the side surface of an intermediate portion of the base (1) facing the horizontal pulley (17). I have. A vertical pulley (19) is mounted on the base (1) at a position near the front end of the side surface.

A wire (20) having a looped end hooked to a vertical pin (16) at the rear end of the horizontal rod (9) is wrapped around a horizontal pulley (17), and is connected to a second horizontal pulley (17). 18) Through the vertical pulley
(19), it extends from underneath, passes through a hollow column (21) erected from the base (1) to the lid (3), and reaches the inside of the lid (3).

As shown in FIG. 4, the inside of the lid (3)
An operating arm (23) extending substantially in the left-right direction is provided, the central portion of which is pivotally attached to the lid (3), and the inner ends of which are pivotally attached by pins (22). The outer ends of these two operating arms are respectively mounted on the rear ends of short rods (24) extending in the front-rear direction, and the front ends of these short rods (24) are on both sides of the horizontal rod (25). It is connected to the mounted operating rod (26). These working arms (2
3), short rod (24), operating rod (26) and horizontal rod (25)
A protruding / retracting mechanism on the side of the lid (3) of (4) is formed.

The wire (20) that has reached the inside of the lid (3) through the hollow column (21) is connected to a vertical pulley that is attached to the lid (3) at the outlet of the hollow column (21). Pass through (27) and the lid
Through two horizontal pulleys (28) and (29) attached to the middle part of (3), a ring (30) protruding from the rear end of the short rod (24) near this side face is connected to a ring. The hooked end is hooked.

A biasing means (31) is provided inside each of the two left and right operating rods (26) of the lid (3). The biasing means (31) includes a mounting piece (32) mounted on the lid (3) side,
It extends through the mounting piece (32) in the front-rear direction, and
Between the long bolt (33) screwed into the (25) and the nut (33a) that is externally fitted to the long bolt (33) and that is screwed halfway into the long bolt (33). It is composed of a coil spring (34) contracted. The tension of this coil spring (34) is
It can be changed by adjusting the screwing amount of the nut (33a) screwed into the nut.

As shown in FIG. 4, the left end of the upper support member 35 is provided on one side (the left end in this embodiment) of the horizontal rod 25 in the vertical direction. Axis pin facing (3
It is pivoted by 6). On the front surface of the upper support member (35), there is formed a support rail (35a) slidably supporting a left-right movable rail (35b) fixed to the upper rear surface of the door (4). Therefore, the door (4) can be turned about 90 degrees from the horizontal rod (25) about the pivot pin (36), and is substantially horizontal along the support rail (35a) of the upper support member (35). Can slide.

As shown in FIG. 1, a lower support member (43) similar to the upper support member (35) is also pivotally supported by a similar pivot pin (42) at the left end of the horizontal rod (14). I have. Lower support member
On the upper surface of (43), there is a movable rail (4) fixed to the lower end of the door (4).
A support rail (43a) for slidably supporting 3b) is formed. Therefore, the door (4) can rotate 90 degrees from the horizontal rod (14) about the pivot pin (42), and slides along the support rail (43a) of the lower support member (43). be able to.

The support rail (35a) and the movable rail (35b) of the upper support member (35) and the support rail (43a) of the lower support member (43)
The upper and lower support members (35), the pivot pins (36), and the lower support members (4
A vertical rotation mechanism is formed by 3) and the pivot pin (42).

Further, an upper supporting means (A) for supporting the upper part of the door (4) is formed by the above-mentioned protruding and retracting mechanism on the side of the lid (3), and the sliding mechanism and the rotating mechanism on the upper side. The retracting mechanism on the table (1) side, the sliding mechanism and the rotating mechanism below,
Lower support means (B) for supporting the lower part of the door is formed.

Referring back to FIGS. 2 and 3, the front end of the arm (37) is pivotally connected to the connection between the short rod (12) and the operating rod (13) on the left side inside the base (1). The rear end of the arm (37) is pivotally attached to one end of a crank arm (38).

The other end of the crank arm (38) has a shaft-like sliding member (39) firmly guided and supported by the base (1) so as to protrude laterally from an intermediate portion of the left side. Is attached to the inner end of the shaft. At the outer end of the sliding member (39), a disc-shaped door support (4
0) is supported. Disc-shaped and rotatable door support (40)
Is formed with a flange portion (41) for guiding the lower end of the door (4). In this embodiment, the door supporting portion (40) is illustrated as a disk, but if desired, it may be a non-rotating member having a simple upward U-shape, for example.

In opening / closing the door (4), first, the handle (5) is inserted from the front of the base (1), engaged with the end of the screw rod (6), and the handle (5) is rotated. This causes the threaded rod (6) to rotate about its central axis, causing the horizontal rod (9) to retract. With the retreat of this horizontal rod (9),
The left and right operating arms (11) rotate around the pivot (12), respectively, and move the operating rod (13) forward at the outer ends thereof to
The horizontal rod (14) supporting the lower end of (4) is moved forward from the front of the display case. This state is shown in FIG.

At this time, since the sliding member (39) is protruded to the side via the arm (37) and the crank arm (38), the display case (40) as shown in FIG. Protruding from the side.

The movement of the above-mentioned retracting mechanism on the base (1) side is transmitted to the retracting mechanism on the lid (3) side by a cable (20).
That is, as the horizontal rod (9) moves backward from the position shown in FIG. 2 to the position shown in FIG. 3, the cable (20) is loosened accordingly. Until then, the door has resisted the tension of the biasing means (31).
The upper support (25) of (4) is connected to the short rod (24), the operating arm (23),
Cable (20) pulled inward via actuation rod (26)
The horizontal rod (25) is pushed forward from the front of the display case together with the door (4) by the force of the urging means (31). This state is shown in FIG. As a result, the upper and lower horizontal rods (14) and (25) move forward by the same distance together with the door (4).

Next, the door thus moved forward
When (4) is pulled to the left side in the horizontal direction about half of the total length, the upper and lower ends of the door (4) are supported by the support rail (35a) of the upper support member (35) and the lower support member (43). The rail is guided and slid in the rail (43a) to reach the position shown in FIG.

From this state, the door (4) is moved to the upper and lower support members.
(35) and (43) are rotated substantially 90 degrees around the pivot pins (36) and (42). This state is shown in FIG.

Then, the door (4) is made substantially parallel to the side of the display case, that is, the side of the display part (2), and the other half is slid on the upper and lower support members (35) and (43). Then, the lower end of the rear part, the disk-shaped door support part (40) described above
When the door support portion (40) is slid while rotating the door support portion (40) under the load, the door reaches the final position shown in FIG. In this position, the front end of the door (4) is supported by the upper and lower support members (3
5) Since it is supported by (43) and near the rear end by the door support part (40), it is stably supported. To close the door (4), the reverse operation may be performed.

In the above-described embodiment, a forward urging force is always applied to the upper lateral rod (25), so that the horizontal rod (2
5) follows the forward movement of the lower horizontal rod (14). In other words, the upper support means (A) moves forward by the biasing force by the slackness of the wire (20) following the lower support means (B). However, in some cases, a rearward biasing force is always applied to the upper support means (A), and the wire (20) is moved forward by the upper support means (A) when the lower support means (B) advances. The same effect can be obtained even if it is made to be drawn.

[0034]

According to the first aspect of the present invention, no complicated moment acts on the upper support means and the lower support means.
Therefore, the door can be moved forward and backward by an equal amount with a simple structure, and the door can be easily opened and closed even if the door becomes large and the weight increases.

According to the second aspect of the invention, the structure can be simplified.

According to the third aspect of the present invention, since the biasing force can be adjusted according to the weight and the assembled state of the door, the upper and lower support means can be reliably synchronized, and the movement of the door can be made smoother. Can be

According to the fourth aspect of the present invention, the wires can be securely and easily disposed at the corners of the display section so as to be inconspicuous.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional side view of an embodiment of a display case of the present invention, showing a state where a door is closed.

FIG. 2 is a schematic cross-sectional plan view of the display case showing details of the inside of the base, showing a state in which a door is closed.

FIG. 3 is a diagram showing a state in which the door is similarly moved forward.

FIG. 4 is a schematic cross-sectional plan view of the display case showing details of the inside of the lid, showing the door closed.

FIG. 5 is a diagram showing a state in which the door is similarly moved forward.

FIG. 6 is a view showing a state in which the door is moved in the lateral direction.

FIG. 7 is a view showing a state in which the door is similarly turned to the side by about 90 degrees.

FIG. 8 is a view showing a final state in which the door is moved along the side of the display case.

FIG. 9 is an external perspective view of a display case.

[Explanation of symbols]

 (A) Upper support means (B) Lower support means (1) Base (2) Display section (3) Lid (4) Door (5) Handle (6) Screw bar (7) Support base (8) Moving member (9) Horizontal rod (10) Vertical axis (11) Operating arm (11a) Axis (12) Short rod (13) Operating rod (14) Lateral rod (14a) Upward rail (15) Angle material (16) Vertical pin ( 17) (18) Horizontal pulley (19) Vertical pulley (20) Wire (21) Hollow column (22) Pin (23) Operating arm (24) Short rod (25) Horizontal rod (26) Operating rod (27) Vertical pulley (28) (29) Horizontal pulley (30) Pin (31) Biasing means (32) Mounting piece (33) Long bolt (33a) Nut (34) Coil spring (35) Upper support member (35a) Support rail (35b ) Movable rail (36) Pivot pin (37) Arm (38) Crank arm (39) Sliding member (40) Door support (41) Flange (42) Pivot pin (43) Lower support member (43a) Support rail (43b) Movable rail

Claims (4)

[Claims] 1. A display system comprising: a base; a display unit formed of a transparent plate provided on the base; and a lid provided on the display unit. One side of the display unit is a door, and the door is In a display case that can be freely opened and closed by being supported on a base and a lid via lower support means and upper support means having a retracting mechanism in a front-rear direction and a rotating mechanism in a horizontal direction, respectively, The supporting means and the upper supporting means are linked by a wire, and the upper supporting means is made to follow the movement of the lower supporting means in one of the front and rear directions, and the upper supporting means is opposite to the moving direction. Display case, wherein the upper support means is driven by the bidirectional movement of the lower support means by providing an urging means for urging in a direction, and always keeping the wire in a tension state. . 2. The display case according to claim 1, wherein the urging means uses a reaction force of a coil spring. 3. The display case according to claim 1, wherein the urging means is provided with adjusting means for adjusting the level of the urging force. 4. The display case according to claim 1, wherein the wire is provided so as to penetrate a hollow column standing upright at a corner of the display section.