JPH0687819B2 - Fireproof display case - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a fireproof display case for preventing damage to the display or theft of the display due to a fire when the display is not displayed, particularly when the display is not displayed.

[Conventional technology]

The already known display cases focus on the display and little attention is paid to the protection of the display from fire and theft, and the purpose and means of protecting the display are supplemented by other factors. Was there. For example, a room with an exhibition case has a fireproof structure, or when there is no need to exhibit, the exhibits are taken out of the case and transferred to another fireproof structure.

[Problems to be solved by the invention]

In the above-mentioned conventional display case, it is very expensive to make the room with the display case a fireproof structure, and it is not necessary to limit the display place to the room and the building that has the room. Disappears. Also, when the exhibit is taken out of the case and transferred to another fireproof structure each time the display is no longer needed, the flexibility of the exhibition site increases, but the effort of the transfer increases, and conversely There is a risk of damage and theft.

The present invention solves the above-mentioned conventional problems, and provides a fireproof display case having two functions of displaying and protecting an exhibit.

[Means for solving problems]

Means for solving the above-mentioned problems of the present invention is to enclose the display case with a fireproof / defense layer and to make a part of the movable fireproof / defense layer, and to move the movable fireproof / defense layer to a position where the display case is exposed when exhibiting. It is a fire-resistant display case that opens and when the exhibition ends, moves to the position where the display case is covered by the fire-proof / defense layer and closes. The objects to be exposed and covered can achieve the same purpose not only in the display case but also in the display case. Further, the present invention is a push-up mechanism that pushes up the display case to a position where it can be easily displayed at the time of display, an automatic closing mechanism that automatically moves the movable fireproof layer to the above-mentioned obscuration position in the event of a power failure or an earthquake, And a locking mechanism for locking the movable fireproof layer when closed.

[Action]

The movable fire protection layer closes the box-shaped fire protection layer when there is no need to display it, and automatically locks the display case or display stand with the display part protected from fire or theft. Also, this movable fireproof layer is opened to the position where the display case or the display section is exposed when it is necessary to display. The opening and closing of the movable fireproof and protective layer is performed by a drive mechanism including a motor and the like. The push-up mechanism of the display case or the display section works in conjunction with the drive mechanism to push up the display case or the display section to enhance the function of the display. The automatic closing mechanism detects the power failure and opens the driving mechanism in response to the earthquake detection signal, and closes the movable fireproof layer by the restoring force of the coil spring, etc.
Locked and protected the exhibits in case of unexpected situations.

〔Example〕

A preferred embodiment of the present invention will be described in detail with reference to the drawings.

1 and 3 are a front view and a first view including a partial fractured surface of a fireproof display case of the present invention in a state where it is not necessary to display it.
A side view on the side of FIG. I, FIG. 2 and FIG. 4 are a plan view including a partial fracture surface in a state of being exhibited and a side view on the side of FIG. 1 II. In FIG. 1 and FIG. 3 in a state where there is no need for exhibition, 1 is an exhibition case, which is composed of an exhibition stand 1a, which is an exhibition section, and a transparent glass 1b. The display case 1 is surrounded by a box-shaped fireproof / defense layer 2, and the upper part of the display case 1 is provided with two movable fireproof / defense layers 3 and 3'which are pivotally attached to the fireproof / defense layer 2.
It is closed as an occultation. Referring also to FIG. 2 and FIG. 4, the movable fire and protection layers 3 and 3 ′ are movable fire and protection layer rotating shafts 3 a and 3 a ′ and fan-shaped movable fire and protection layer driven gears 3 b and 3 respectively.
b'is fixed, and the rotating shafts 3a, 3a 'are rotatably supported on both insides of the fireproof and protective layer 2 facing each other. The movable fireproof and protective layers 3 and 3'are rotated by the rotational force transmitted by the drive mechanism to the driven gears 3b and 3b '.

Next, a configuration example of the drive mechanism will be described. The drive mechanism is an electric motor 4 that rotates in the forward and reverse directions in FIG. 1, and a joint 4a for its shaft.
And a brake clutch 5 connected via a joint 4a,
The brake clutch 5 includes a chain transmission mechanism 20 which is connected to or disengaged from the electric motor 4 and is braked when the electric motor 4 is connected, a drive gear mechanism 21 of the driven gears 3b and 3b ', and an operation switch (not shown). The chain transmission mechanism 20 is shown in FIG. 3 and is a movable fireproof and protective layer driving sprocket 6 fixed to the shaft of the brake clutch 5.
A first driven sprocket 7a connected to the sprocket 6 by a first drive chain 6a, a second driven sprocket 7b pivotally attached to the first sprocket 7a and rotating together, 2nd sprocket 7b with 2nd drive chain
It is composed of a third driven sprocket 7c joined by 6b. The driving gear mechanism 21 is the third driven sprocket 7c.
A drive shaft 8 fixed to and rotating with it, and a movable fireproof and protective layer drive gear 8a fixed to the drive shaft 8 and engaged with the one driven gear 3b, and also fixed to the drive shaft 8. A synchronous gear 8b, a synchronous gear 8b 'meshing with the synchronous gear 8b and having the same shape as the synchronous gear 8b, and a drive shaft 8'to which the synchronous gear 8b' is fixed and rotates in synchronization with the drive shaft 8 in the opposite direction. And a movable fireproof and protective layer drive gear 8a 'which is fixed to the drive shaft 8'and meshes with the driven gear 3b'. In addition, as shown in FIG. 4, according to the weight of the movable fire-resistant protective layer, the movable fire-resistant protective layer driven gears 8a ″, 8a and the movable fire-resistant protective layer driven gears 3b ″, 3b.
Is also provided on the side of the other movable fire and protection layer rotation shafts 3b ″, 3a. The operation commands for the above drive mechanism are the “open” command switch, the “close” command switch,
This is done with the "stop" command switch. These operation switches are linked to the locking / unlocking state of the locking mechanism as described later.

Next, a configuration example of the push-up mechanism 22 of the display case 1 will be described. As shown in FIG. 2, the push-up mechanism 22 includes a movable fireproof and protective layer 3 for rotating the shaft.
Display case drive levers 9 and 9'which are rotatably inserted through a and 3a ', respectively, and which are similarly fixed to the levers 9 and 9'and rotatable about the rotation shafts 3a and 3a'. Display case driven sprocket 9 which is mounted on the display case to rotate the levers 9 and 9 '
a, 9a 'and the display case drive chains 10a, 10a' which are fixed to the respective rotary shafts 3a, 3a ', through which the display case driven sprockets 9a', 9a of the other rotary shaft are inserted. Display case drive sprockets 10 and 10 'which are rotated in the opposite direction to the rotating shafts 3a' and 3a, and the drive levers 9 and 9 '
One side is composed of rollers 9b, 9b ', etc., which are pivotally supported at the front end of the display case 1 and rotatably support the lower edge of the display case 1, and the other side is similarly driven levers 9 ", 9 as shown in FIG. The case driven sprocket 9a ″, 9a, the rollers 9b ″, 9b, the display case drive sprocket 10 ″, 10 and the display case drive chain 10a ″, 10a. Thus, the display case 1 includes the rollers 9b, 9b. It is supported by ′, 9b ″, 9b, and the drive levers 9,9 ′, 9 ″, 9 will rotate upward when the movable fireproof and protective layers 3,3 ′ rotate downward, pushing up the display case 1. It will be.

Subsequently, a configuration example of the automatic closing mechanism will be described. In FIG. 1, the automatic closing mechanism includes a take-up wheel 11 penetrating and fixed to the drive shaft 8, a balancer rope 12a having one end wound around the take-up wheel 11, and the other end of the balancer rope 12a. It is composed of a balancer 12 and the like that is wound by being biased by a coil spring or the like installed inside. The balancer rope 12a is set so as to be unwound from the winding vehicle 11 by the winding force of the balancer 12 when the brake clutch 5 is released. Thereby, the rotational force of the drive shaft 8 for automatic closing is obtained.

Subsequently, a configuration example of the locking mechanism 23 shown in FIG. 3 will be described based on FIG. The solid line shows the locked state and the alternate long and short dash line shows the unlocked state. The locking mechanism 23 has a lever shaft 13a, and the upper end of the locking mechanism 23 is urged by the elastic force of the spring 13b to rotate in the opening direction when the movable fire-resistant protective layer 3 is in the closed state. A locking lever 13 that locks when positioned at the lower edge 3c, an unlocking lever 14a for a cylinder lock that abuts the lower end 13c of the locking lever to swing the locking lever 13 to the unlocking side, and the unlocking lever 14a. Is composed of a cylinder lock 14 for rotating the lock lever to the unlocked position and the locked position.

The operation of the fireproof display case configured as above will be described. First, the case where the state of protecting the exhibits shown in FIGS. 1 and 3 is changed to the state of exhibits shown in FIGS. 2 and 4 will be described. When the cylinder lock 14 is unlocked with a key, the unlocking lever 14a pushes the lower end 13c of the locking lever and the tip of the locking lever 13 is a spring 13b.
It is possible to rotate downward from the lower edge 3c of the movable fire-resistant barrier layer 3 against the bias of the. At this time, the handling of the "open" command switch (not shown) becomes effective. When the "open" command is issued, the brake clutch 5 is engaged, the electric motor 4 rotates, and the drive shaft 8 rotates 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'has a synchronous gear 8
The meshing of b and 8b 'causes the drive shaft 8 to rotate in the opposite direction in synchronization with each other. By the rotation of the drive shaft 8, the movable fireproof and protection layer driving gear 8a is rotated together, and further the meshing movable fireproof and protection layer driven gear 3a is fixed at the same position as 3a in FIG. 4, that is, the driven gear 3a is fixed. The movable fireproof and protective layer 3 rotates together to rotate the display case 1 to the exposed position. When the electric motor 4 is rotated to the position, the electric motor 4 is stopped by detecting the position by a detector (not shown). Similarly, the drive shaft 8'is exposed until the electric motor 4 is stopped, that is, the movable fire and protection layer 3'is exposed by the rotation of the movable fire and protection layer drive gear 8a 'and the movable fire and protection layer driven gear 3a'. Rotate to the desired position. When the electric motor 4 stops, the brake of the brake clutch 5 is turned on so that the automatic closing mechanism does not operate. When the movable fire and protection layer 3 is opened, that is, when it is rotated downward, the rotation of the display case drive sprocket 10 'is rotated as described above.
The display case drive lever 9 to which the driven sprocket 9a is fixed is rotated upward by transmitting the power through 10a 'and the display case driven sprocket 9a. Similarly, all the other display case drive levers 9 ′, 9 ″, 9 also rotate upward, and the rollers 9b, 9b ′, 9b ″, 9 at the tip of the levers are moved.
The display case 1, whose lower edge is supported by, rises to the position shown in FIG. 4 to make the display easier to see.

Next, the case where the display state is changed to the protection state will be described. When the cylinder lock 14 is in the locked position, the handling of the "close" command switch is valid. Brake clutch 5 when there is a "close" command
The brake is turned off, and then the electric motor 4 rotates in the opposite direction to that when the electric motor 4 is opened. Thereafter, the display case 1 is lowered to the position shown in FIG. 3 by reversely rotating all of the above, and the two movable fire and protection layers 3 and 3'are swung upward and closed to cover the display 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 and brought into the released state. While the lock lever 13 of the lock mechanism 23 is pushed away by the movable fire and protection layer 3 in the closed state, the upper end of the lock lever 13 is pushed by the spring 13b in the closed state so that the upper end of the lock lever 13 is the lower edge of the movable fire and protection layer 3. Positioned at 3c, the downward rotation is automatically locked and locked.

Next, the operation when the automatic closing mechanism automatically closes the display state will be described. The brake clutch 5 is used so that the clutch is released when the power is turned off. Therefore, when a power failure occurs, the drive shaft 8 is released from the braking state of the electric motor 4 and the brake clutch 5, and the rotating force in the closing direction by the balancer 12 acts, and the rotating force closes the fireproof layers 3 and 3'as described above. It is locked. Similarly, if the power of the brake clutch 4 is turned off by a signal such as an earthquake detection signal, it can be automatically closed and the exhibit can be protected from an unexpected situation.

〔The invention's effect〕

As described above, the fireproof display case of the present invention has the function of exhibiting, and when it is not necessary to exhibit, it is possible to protect the exhibits from fire or theft with the exhibits stored. It is possible to obtain an effect such as the necessity of transferring to.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment including a partially broken surface in a protected state of an exhibit, FIG. 2 is a plan view including a partially broken surface in an exhibited state, and FIG. 3 is a partially broken surface in a protected state. Fig. 1 side view including Fig. 1 and Fig. 4 Fig. 1 II including a partial fractured surface in the exhibition state.
FIG. 5 is a side view of the side, and FIG. 5 is a sectional view showing the locking mechanism. 1 ... Exhibition case, 2 ... Fireproof layer 3,3 '... Moveable fireproof layer, 4 ... Electric motor 3b, 3b', 3b ", 3b ... Movable fireproof layer Driven gear 5 ... Brake Clutch 6 …… Movable fire protection layer Drive sprocket 6a, 6b …… Drive chain 7a, 7b, 7c …… Driven sprocket 8,8 ′ …… Drive shaft 8a, 8a ′, 8a ″, 8a …… Moveable fire protection layer Drive gear 9,9 ′, 9 ″, 9 …… Display case drive lever 10,10 ′, 10 ″, 10 …… Display case drive sprocket 11 …… Winding wheel, 12 …… Balancer 12a …… Balancer rope, 13 ...... Locking lever 14 …… Cylinder lock, 14a …… Unlocking lever 20 …… Chain transmission mechanism, 21 …… Drive gear mechanism 22 …… Pushing mechanism, 23 …… Locking mechanism

Claims (3)

[Claims] Claims: 1. A fireproof protective layer surrounding an exhibition case, and a movable fireproof protective layer having a movable fireproof protective layer pivot shaft attached to the fireproof protective layer to close the upper part of the fireproof protective layer in an obscured manner. A driven gear fixed to the movable fireproof and protective layer rotation shaft, and a drive shaft to which the rotational force of the electric motor is transmitted via a transmission mechanism,
And a drive mechanism that is fixed to the drive shaft and that is engaged with the driven gear, and that moves the movable fire resistant layer to a position where the display case is exposed when an exhibit is displayed. A fireproof display case characterized by that. 2. A display case drive lever, one end of which is mounted on a rotary shaft of the movable fire and protection layer, and the other end of which is rotatably inserted into the display case. The display case is interlocked with the opening operation of the movable fire and protection layer. The fireproof display case according to claim (1), further comprising a push-up mechanism for pushing up. 3. A lock lever, which is pivotally attached to the inner wall of the fire-resistant protective layer and is spring-biased so as to lock the closed state by being positioned at the lower edge of the movable fire-resistant protective layer when it is closed. The fireproof display case according to claim (1) or (2), further comprising a locking mechanism for rotating the lever to release the engagement with the movable fireproof and protective layer.