JPH0323033Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electric shutter that houses a cashing dispenser, a vending machine, etc., or is attached to a box such as a storeroom.

[Problems to be solved by the prior art and the invention]

Conventionally, in this type of electric shutter, the opening was opened by winding up the shutter curtain with a winding drum, so the shutter case had at least the maximum winding diameter when the entire shutter curtain was wound up. The size of the interior is required,
For this reason, when the shutter curtain is unwound from the winding drum and lowered, a large space becomes vacant inside the shutter case. Even if the rotation of the drum is restricted, if a closed shutter curtain is forcibly lifted, the lifted shutter curtain may bend or break into the space in the shutter case. As a result, security is extremely poor, and it is necessary to take some kind of locking method, especially for items that require extremely high security, such as cathing dispensers. It was necessary to use expensive and special devices such as electronic locks.

[Means to solve the problem]

In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing an electric shutter that can eliminate these drawbacks. A shutter curtain formed by connecting a plurality of slats in a series so as to move while maintaining a connected state until an operating chain that is arranged in a connected state and integrally follows the movement of the shutter curtain; a drive sprocket that engages with the operating chain from below at an intermediate position between the closed position and the storage position;
It is characterized by comprising an electric motor with a brake that rotates the drive sprocket in forward and reverse directions.

With this configuration, the present invention enables the braking of the electric motor to be used directly as a locking means without using any special locking means when the shutter curtain is fully closed.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes an electric shutter, and in this embodiment, a shutter curtain 2 for use as a dispensing dispenser is illustrated, and a shutter curtain 2 constituting the electric shutter has a plurality of slats 3 interlocked with each other. It is constructed by connecting them into a single piece. A support shaft 5 is fixed to both left and right ends of each slat 3 via a bracket 4, and an operating chain 6 is swingably supported on the support shaft 5. A running roller 6a is pivotally supported in accordance with the slat pitch.

On the other hand, reference numeral 7 denotes a guide rail for guiding the traveling roller 6a of the shutter curtain 2, and the guide rail 7 is connected to a front opening A of a box body 8 that houses a not-shown casting dispenser.
The shutter case 9 is laid so that the part continuing from the guide rail 7 is connected to the top plate 8b via the upper surface part to the upper part of the shutter case 9 formed on the back surface of the box body 8. It is formed in such a way that it becomes longer downward. Reference numeral 10 denotes a drive source disposed at the upper end of the shutter case 9, and the drive shaft 10 is rotatably supported on the left and right side walls of the box body 8 via bearings 11. Drive sprockets 12 are integrally attached to both left and right ends. An operating chain 6 provided on the shutter curtain 2 is meshed with the drive sprocket 12 from above.
Furthermore, a driven sprocket 13 is integrally attached to the drive shaft 10 between the left and right drive sprockets 12;
An electric motor 15 with a brake mechanism disposed below the drive shaft 10 is interlocked with the drive shaft 10 via a transmission chain 14, and as will be described later, the rotation of the drive shaft 10 due to forward and reverse driving of the electric motor 15 is controlled. The shutter curtain 2 can be opened and closed up and down by moving the shutter curtain 2. Then, the shutter curtain 2 that has been rolled up by the drive of the electric motor 15 and entered the shutter case 9 is sent into the shutter case 9 in a state where it hangs downward without being wrapped around the drive shaft 10. It is now being stored. On the other hand, the front opening A is closed by the shutter curtain 2 that is lowered by the reverse drive of the drive shaft 10, but with the front opening A fully closed, the operating chain 6 is moved to the drive sprocket 13. It is set so that it meshes with the upper end of the.

The forward and reverse drive control of the electric motor 15 will not be described in detail, but due to the nature of the caching dispenser, it is preferable to control it at a separate location such as a control room. The electric motor 15 is set so as not to rotate freely by applying a brake except when being driven, which is the same as a general-purpose motor with a brake.

In the embodiment of the present invention constructed as described above, the opening/closing operation of the shutter curtain 2 can be performed by forward and reverse driving of the electric motor 15 as described above. At times, the shutter curtain 2 is housed in the shutter case 9 in a state where it hangs downward from the drive shaft 10 without being wound up on a winding drum as in a conventional shutter. For this reason, the top plate 8b of the shutter case 9
and drive shaft 10 (more precisely, drive sprocket 12)
There is a horizontal shutter curtain 2 between
Therefore, the top plate 8b can be configured to substantially coincide with the extension line of the guide rail 7. As a result, even if you try to lift the shutter curtain 2 and force it up when the opening A is closed, the shutter curtain 2 will not have any wasted space between the drive shaft 10 and the top plate 8b. The shutter curtain 2 does not bend or bend and get stuck in a large open space unlike the winding method using a winding drum. This allows the lock to be securely locked. Therefore, a dedicated locking device is completely unnecessary, the structure can be greatly simplified, and an electric shutter with excellent security performance can be provided, which is lightweight, compact, and inexpensive.

In addition, since the shutter curtain 2 is not structured to be wound around a drive drum, by opening the opening/closing plate 8a provided on the back of the shutter case 8,
The shutter curtain 2 itself can be replaced very easily, which is convenient, and since the slats do not rub against each other during winding, quiet opening and closing operations can be performed. Furthermore, electric motor 1
5 is arranged by utilizing the space below the drive shaft 10, and power transmission to the drive shaft can be performed at the middle part of the drive shaft 10 rather than at the end of the shaft as in winding drum systems. Not only does the case not protrude to the side, but the driving force acting on the left and right drive sprockets 12 can be made uniform, and the phenomenon of the shutter curtain 2 falling to one side does not occur. Furthermore, since the width of the guide rail 7 does not need to be affected by the existence of the driven sprocket 13, it can be made symmetrical and narrow. Note that as a means for making the guide rail 7 even narrower, as in the above embodiment, the drive shaft 10
Instead of being directly supported on the shutter case 8 via a bearing 11, the drive shaft 10 is supported by a bearing 17 placed inside the drive sprocket 12 via a bearing bracket 16, as shown in FIG. If the size is small, such as a box for a cathing dispenser,
This is advantageous because it allows for a well-balanced external appearance.

Furthermore, since the drive sprocket 12 engages with the operating chain 6 from below, the operating chain 6 actively engages with the drive sprocket 12 due to gravity, allowing for reliable opening and closing. It is possible to reliably prevent the problem of allowing the shutter curtain 2 to be pushed up due to disengagement of the shutter curtains 6 and 6, thereby further improving crime prevention.

[Effect]

In summary, since the present invention is constructed as described above, the shutter curtain does not open and close by winding operation as in the past, but integrally follows the movement of the shutter curtain. Since the shutter curtain is configured to be opened and closed by forward and reverse rotation of the drive sprocket meshed with the operating chain, the pushing up of the shutter curtain can be restricted by applying the brake of the electric motor. In other words, the brake of the electric motor can be effectively used as is to lock the shutter, and as a result, an electric shutter with excellent security properties can be made extremely simple, lightweight and compact without the need for a special locking device. Can be configured.

Moreover, since the drive sprocket is installed so as to engage with the operating chain from below, the operating chain actively engages with the drive sprocket due to gravity, allowing for reliable opening and closing. It is also possible to reliably prevent the shutter curtain from being pushed up due to disengagement, thereby improving crime prevention.

Furthermore, since the operating chain is disposed at a position that protrudes outward from the left and right edges of the shutter curtain, the front and rear thickness of the shutter curtain does not increase. This is extremely convenient since there is no need to particularly increase the front and rear thickness dimensions of the guide rails that guide the left and right sides.

[Brief explanation of the drawing]

The drawings show an embodiment of the electric shutter according to the present invention, in which FIG. 1 is a schematic overall front view with a half section of the electric shutter cut away, FIG. 2 is a vertical side view of the same, and FIG. FIG. 4 is a front view of the main parts of the electric shutter curtain, FIG. 4 is a side view of the main parts of the same, and FIG. 5 is a sectional front view of the main parts of an electric shutter showing another example. In the figure, 1 is an electric shutter, 2 is a shutter curtain, 3 is a slat, 4 is a bracket, 5 is a support shaft, 6 is an operating chain, 7 is a guide rail, 8 is a box body, 9 is a shutter case, and 10 is a Drive shaft, 11
1 is a bearing, 12 is a driving sprocket, 13 is a driven sprocket, 14 is a transmission chain, and 15 is an electric motor.

Claims (1)

[Scope of utility model registration request] A shutter curtain formed by connecting a plurality of slats in a series so as to move from a closed position where an opening is closed to a storage position behind the closed position while maintaining the connected state, and the left and right side edges of the shutter curtain. an operating chain connected to a plurality of slats at a position protruding outward from the shutter curtain and integrally following the movement of the shutter curtain; and an operating chain operating at an intermediate position between the closed position and the storage position. An electric shutter comprising a drive sprocket that engages with a chain from below, and an electric motor with a brake that rotates the drive sprocket in forward and reverse directions.