JPS61265111A - Refractory display case - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fireproof display case for displaying exhibits, which prevents damage to the exhibits or theft of the exhibits due to fire, especially when the exhibits are not displayed.

[Conventional technology]

The main focus of existing display cases is on display, and little attention is paid to protecting exhibits from fire or theft, and the purpose and means of protecting exhibits are supplemented with other elements. was.

For example, a room with an exhibition case may be made fireproof.
When there was no need to display the exhibits, they were removed from the case and moved to another fireproof structure.

[Problem that the invention seeks to solve]

In the above-mentioned conventional display cases, it would cost a huge amount of money to make the room where the display case is located fire-resistant, and it would also limit the display location to that room and the building that houses the room, giving rise to a lack of freedom in display locations. disappears. In addition, if exhibits are taken out of their cases and moved to another fireproof structure each time they are no longer needed for display, the flexibility of the display location increases, but the labor involved in moving them increases; There is also a risk of damage or theft.

The present invention solves the above-mentioned conventional problems and provides a fireproof display case that has the dual functions of displaying and protecting exhibits.

[Means for solving problems]

The means for solving the above problems of the present invention is to surround the display case with a fireproof barrier layer, make a part of the display case a movable fireproof barrier layer, and move the movable fireproof barrier layer to a position where the display case is exposed when the display case is displayed. This is a fireproof display case that opens and closes when the display is finished, moving to a position where it is covered with a fireproof layer.

The purpose of the above-mentioned exposing and obscuring can be achieved in the same way even if the object to be exposed and obscured is not an exhibition case but an exhibit inside an exhibition case. The present invention also provides a push-up mechanism for pushing up the display case to a position where it can be easily displayed when exhibiting, an automatic closing mechanism for automatically moving the movable fireproof protection layer to the above-mentioned covering position in the event of a power outage or an earthquake, and the above-mentioned automatic closing mechanism. and a locking mechanism that locks the movable fireproofing layer when closed.

[For production]

When the movable fireproof barrier layer is not required to be exhibited, it is closed in the case of the fireproof barrier layer, covers the exhibition part such as the display case or the display stand, and is automatically locked to protect the exhibits from fire and theft. The movable fireproof barrier layer is opened to a position where the display case or display section is exposed when it is necessary to display the display. The opening and closing of this movable fireproof protection layer is performed by a drive mechanism comprising a motor or the like. The display case or display section push-up mechanism works in conjunction with the drive mechanism to push up the display case or display section to enhance the display function. The automatic closing mechanism opens the drive mechanism upon detecting a power outage or an earthquake detection signal, and closes and locks the movable fireproof barrier layer using the restoring force of coil springs, responding to unexpected situations and protecting exhibits.

〔Example〕

A preferred embodiment of the present invention will be described in detail based on the drawings.

FIGS. 1 and 3 are a front view including a partially broken surface of the fireproof display case of the present invention in a state where it is not necessary to display it;
The side view of the example shown in FIG. In FIGS. 1 to 4, reference numeral 1 denotes an exhibition case, which is comprised of an exhibition stand 1a, a transparent glass 1b, and the like. The display case is surrounded by a fireproof protection layer 2, and when it is not required for display, it is closed and covered by two movable fireproof protection layers 3, 3' which rotate at the top, as shown in FIG. The movable fireproof protection layer 3, 3' has movable fireproof protection sequential rotation shafts 3a, 3a' and sector-shaped fireproof protection layer liquid drive gears 3b, 3b' fixed thereto, and the rotation shafts 3a, 3a' It is rotatably supported on both opposing inner sides of layer 2. The movable fireproof shielding layers 3, 3' are connected to the driven gears 3b, 3.
b and ' are rotated by the rotational force transmitted by the drive mechanism.

Next, an example of the configuration of the drive mechanism will be explained. In Fig. 1, the drive mechanism includes an electric motor 4 that rotates in forward and reverse directions, and a joint 4a on its shaft.
, a brake clutch 5 connected via a joint 4a, a chain transmission mechanism 20 which is connected to or released from the electric motor 4 by the brake clutch 5 and applies a brake when connected, and the driven gears 3b, 3b'. It consists of a drive gear mechanism 21 and operation switches (not shown). In FIG. 3, the chain transmission mechanism 20 includes a movable fireproof protection layer drive sprocket 6 fixed to the shaft of the brake clutch 5, and a first driven sprocket 7a connected to the sprocket 6 by a first drive chain 6a. and,
A second sprocket that is pivotally attached to the first sprocket 7a and rotates together with the first sprocket 7a.
driven sprocket 7b, and the second sprocket 7.
b and a third driven sprocket 7C connected to the second drive chain 6b. The drive gear mechanism 21 includes a drive shaft 8 to which the third driven gear 7C is fixed and rotates therewith, and a movable fireproof shield that is fixed to the drive shaft 8 and engages with the one driven gear 3b. A surface drive gear 8a and a synchronous gear 8b also fixed to the drive shaft 8
and a synchronous gear B that meshes with the synchronous gear 8b and has the same shape as that of the synchronous gear 8b.
b', a drive shaft 8' to which the synchronous gear 8b' is fixed and rotates synchronously in a direction opposite to the drive shaft 8, and the drive shaft 8.
and a movable fireproof face drive gear 8a' fixed to the drive gear 8a' and meshing with the driven gear 3b'. As shown in FIG. 4, depending on the weight of the movable fireproof protection layer, the movable fireproof protection surface driving gears 8a'', 8a''' and the movable fireproof protection opening driven gears 3b, 3b''' are moved from one side to the other. The movable fireproof protection layer is also provided on the side of the concave moving shafts 3b', 3a"'. The commands to operate the drive mechanism described above are given by an "open" command switch, a "close" command switch, and a "stop" command switch (not shown).

These operation switches are linked to the locked/unlocked state of the locking mechanism as described later.

Next, an example of the configuration of the push-up mechanism 22 for the display case l will be explained.

As shown in FIG. 2, the push-up mechanism 22 includes exhibition case drive levers 9 and 9' rotatably mounted on the movable fireproof protection layer rotation shafts 3a and 3a', respectively, and the levers 9 and 9'. exhibition case driven sprockets 9a, 9a' which are fixedly attached to each of the rotating shafts 3a, 3a' and rotatably inserted through the rotating shafts 3a, 3a' to rotate the levers 9, 9'; The display case driven sprocket 9a', 9a of the other rotating shaft is fixed to the shafts 3a, 3a' with the display case drive chain 10a, 10a', and the rotating shaft 3a', 3a is penetrated by the display case driven sprocket 9a', 9a of the other rotating shaft. the display case drive sprocket which rotates in the opposite direction] 0°10', the drive lever 9,
One side consists of rollers 9b, 9b', etc., which are pivoted at the tip of the display case 1 and movably support the lower edge of the exhibition case 1, and the other side consists of drive levers 9'', 9''' as shown in FIG. and display case driven sprocket 9a"+9a"'
, rollers 9b'', 9b''', exhibition case drive sprockets 10'', 10''', and exhibition case drive chain 1
0a", 10a"'. In this way, the display case 1 is supported by the rollers 9b, 9b', 9b", 9b"', and the drive levers 9.9', 9", 9"' are activated when the movable fireproofing layers 3, 3' rotate downward. It rotates upward and pushes up the support case 1.

Next, a configuration example of the automatic closing mechanism will be explained. In FIG. 1, the automatic closing mechanism includes a take-up wheel 11 that penetrates and is fixed to the drive shaft 8, a balancer rope 12a whose one end is wound around the take-up wheel 11, and the balancer rope 12.
The other end of the balancer 12 is wound around by the bias of an internal coil spring or the like. The balancer rope 12a is set to be unwound from the winding wheel 11 by the winding force of the balancer 12 when the brake clutch 5 is released. This provides the rotational force of the drive shaft 8 for automatic closing.

Next, a configuration example of the locking mechanism 2B shown in FIG. 3 will be explained based on FIG. 5. A solid line indicates a locked state, and a dashed line indicates an unlocked state. The locking mechanism 2'3 has a lever shaft 13a, and its upper end is biased by a spring to rotate in the opening direction when the movable fireproof protection layer 3 is in the closed state. A locking lever I3 that locks when positioned; an unlocking lever 14a of a cylinder lock that contacts the lower end 13c of this locking lever and swings the locking lever 13 toward the unlocking side; It consists of a cylinder lock 14 that is rotated to the locked position and the locked position.

The operation of the fireproof display case configured as above will be explained. First, a case will be described in which the exhibited objects are changed from the protected state shown in FIGS. 1 and 3 to the exhibited state shown in FIGS. 2, 3, and 4. When the cylinder lock 14 is unlocked with the key, the unlock lever 14a
presses the lower end 13c of the locking lever 13, and the lower edge 3 of the movable fireproofing layer 3 pushes against the bias of the spring 13b.
It deviates from C and can be rotated downward. At this time, handling of an "open" command switch (not shown) becomes effective.

When there is an "open" command, the brake clutch 5 is engaged, the electric motor 4 rotates, and the drive shaft 8 is rotated via the chain transmission mechanism as described above. The drive shaft 8 rotates while winding the balancer rope 12a around the winding wheel 11 against the winding force of the balancer 12. On the other hand, the other drive shaft 8' rotates synchronously in the opposite direction to the drive shaft 8 due to the meshing of the synchronous gears 8b and 8b'. The rotation of the drive shaft 8 causes the movable fireproof protection layer drive gear 8a to rotate together, and the movable fireproof protection layer liquid drive gear 3a that meshes with the movable fireproof protection layer drive gear 3a' in FIG.
'', that is, the movable fireproof shielding layer 3 fixing the driven gear 3a rotates together to a position where the exhibition case 1 is exposed.When it rotates to this position, the position is detected by a detection means (not shown). Then, the electric motor 4 is stopped.

Similarly, the drive shaft 8' is operated until the electric motor 4 stops, that is, by the rotation of the movable fireproof protection layer drive gear 8a' and the movable fireproof protection layer liquid drive gear 3a+, the movable fireproof protection layer 3' is rotated until the display case 1 is rotated. Rotate to exposed position. When the electric motor 4 stops, the brake of the brake clutch 5 is turned on to prevent the automatic closing mechanism from operating. When the movable fireproof shielding layer 3 closes, that is, rotates downward, the display case driving sprocket 10 is moved as described above.
By transmitting the rotation of ' through the exhibition case drive chain 10a' and the exhibition case driven sprocket 9a, the exhibition case drive lever 9 to which the driven sprocket 9a is fixed is rotated upward. Similarly, all other display case drive levers 9', 9", 9"' rotate upward, and the rollers 9b, 9b', 9b" at the tips of the levers rotate upward.
The display case 1, whose lower edge is supported by 9"', rises to the position shown in FIG. 4, making it easier to view the exhibits.

Next, we will discuss the case where the display state is changed to the protected state.

When the cylinder lock 14 is in the locked position, the "close" command switch is valid. When there is a "close" command, the brake of the brake clutch 5 is turned off, and then the electric motor 4 rotates in the opposite direction from the time when the brake clutch 5 is opened.

Thereafter, everything rotates in the opposite direction to the above, and the display case 1 is lowered to the position shown in Fig. 3, and the two movable fireproof protection layers 3.3' are -
It rotates in the L direction and closes, covering the exhibition case 1. −
The closed state is detected by a detection means (not shown) and the electric motor 4 is stopped. Further, the brake clutch 5 can also be turned off to be in a released state. During the closing state, the locking lever 13 of the locking mechanism 29 is pushed away by the movable fireproof protection layer 3, but when the closing state is reached, the spring 13b
The upper end of 3 is the movable fireproof protection layer 3.
It is located at the lower edge 3c of the door and automatically locks its downward rotation.

Then, it will be automatically closed from the exhibition state using the automatic closing mechanism.

Therefore, when a power outage occurs, the drive shaft 8 is released from the braking state of the electric motor 4 and the brake clutch 5, and the rotational force in the closing direction by the balancer 12 is applied, and the fireproof protection layer 3.3' is closed in the same manner as above by that rotational force. and locked. If the power source of the brake clutch 4 is turned off by a signal such as an earthquake detection signal, automatic closing becomes possible in the same way, and it becomes possible to protect the exhibit from an unexpected situation.

〔Effect of the invention〕

As described above, the fireproof display case of the present invention has the function of displaying items, but when it is not necessary to display them, it is possible to store the exhibited items and protect them from fire and theft. Effects such as eliminating the need for relocation to another location can be obtained.

[Brief explanation of drawings]

Fig. 1 is a front view of the embodiment including a partially broken surface in a protected state, Fig. 2 is a plan view of the same including a partially broken surface in an exhibited state, and Fig. 3 is a partially broken surface in a protected state. FIG. 1 is a side view of the example I shown in FIG. 1, FIG. 4 is a side view of the side shown in FIG. l...Display case 2...Fireproof protection layer 3.3
'...Movable fireproof protection layer 4...Electric motor 3b,
3b', 3b'', 3b'''...Movable fireproof protection layer liquid drive gear 5...Brake clutch 6...Movable fireproof protection layer drive sprocket 6a, 6b
...Drive chain 7a, 7b, 7c...Driven sprocket 8.8
'...Drive shaft 8a, 8a'+8a''+8a'''...Movable fireproof protection layer drive gear 9.9', 9'', 9'''...Display case drive lever 10.10', 10#, 10"'
... Exhibition case drive sprocket 11 ... Winding wheel 12 ... Balancer 12a ... Balancer lobe 13 ... Locking lever 14 ... Cylinder lock 14a ... Unlocking lever 20 ... Chain transmission Mechanism 21... Drive gear mechanism 22... Push-up mechanism 23... Locking mechanism patent applicant
Kumahira Seisakusho Co., Ltd. Figure 3

Claims (1)

[Claims] (1) An exhibition case for displaying an exhibit has a fireproof protection layer and a movable fireproof protection layer, and when the exhibition is not necessary, the movable fireproof protection layer is used to display the display case or the exhibit. The fireproofing device is characterized by comprising a drive mechanism that moves the movable fireproofing layer to a position where it is hidden by the movable fireproofing layer, and moves the movable fireproofing layer to a position where the display case or its exhibits are exposed when it is displayed. exhibition case.