JP2601838Y2 - Open / close control device for shutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter curtain opening / closing control device for opening and closing a building opening, and more particularly to a repetitive operation of a rotary storage mechanism for storing a fixed position of opening and closing a shutter curtain. Further, the present invention relates to a shutter open / close control device configured to count the number of times the shutter curtain moves up and down.

[0002]

2. Description of the Related Art Conventionally, a shutter installed at an entrance of a store, a warehouse, or the like has a switchgear for rotating a take-up drum on which a shutter curtain is wound at a preset fixed position of opening and closing the shutter curtain. An opening / closing control device that shuts off power supply and controls a raising / lowering operation of a shutter is provided. This type of opening and closing control device detects the fixed position of opening and closing of the shutter curtain by storing the number of rotations of the output shaft of the winding drum or the opening and closing device when the building opening is fully opened and closed. When the stored number of revolutions is reached, the limit switch connected to the switch is operated to cut off the power supply to the switch.

[0003] On the other hand, in the shutter installed as described above, lubrication or replacement of the bearing mechanism of the take-up drum worn out by repeated raising and lowering operations, adjustment of the torque of the switchgear, and periodic inspection of the auxiliary mechanism attached thereto are performed. Maintenance is important for smooth use of the shutter over a long period. Therefore, conventionally, an electromagnetic counting device is separately connected to the drive power supply of the switch to reduce the number of times the shutter curtain is moved up and down. The work was inspected and maintained according to the frequency of ascending and descending using the counted value as a guide. However,
The above-mentioned electromagnetic counting device is expensive, has a complicated structure and requires advanced technology for handling.In addition, a separate installation space must be secured in a limited shutter installation place, and inspection and maintenance are required. Despite the recognition of the importance of, the current situation is that the installation of electromagnetic counting devices has not been sufficiently widespread.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned situation to solve the conventional disadvantages, and the purpose is to use an electromagnetic counting device without using an electromagnetic counting device. Using a rotation storage mechanism that stores the fixed position of opening and closing the shutter curtain, the number of times the shutter curtain moves up and down can be counted easily and reliably, and inspection and maintenance according to the frequency of use are performed appropriately. Further, an object of the present invention is to provide a shutter opening / closing control device capable of maintaining smooth operation of a shutter for a long period of time.

[0005]

In order to solve the problem, a technical means adopted in the present invention is to coaxially support a plurality of girders on a rotating shaft of a winding drum on which a shutter curtain is wound. In order to interlock and connect the rotation storage mechanism, and to turn on and off the switch, the rotation storage mechanism incorporates a limit switch that opens and closes in conjunction with the carry rotation of the uppermost digit disk, An accumulation counter for counting the number of carry-up operations of the uppermost digit disk is connected to the rotation storage mechanism.

Therefore, according to the present invention, the number of times the shutter curtain is moved up and down can be simply and reliably counted in conjunction with the operation of the rotary storage mechanism that stores the fixed position of opening and closing the shutter curtain. Adequate inspection and maintenance can be performed by properly knowing the timing of inspection and maintenance.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail based on an embodiment shown in the drawings. In FIG. 1, reference numeral 1 denotes a shutter installed in a building opening 2, and the shutter 1
A shutter curtain 4 is wound around a winding drum 3a pivotally supported by a bearing bracket 3 provided above the opening 2, and a switch 5 is provided at one side of the bearing bracket 3;
The shutter curtain 4 is wound and unwound along the guide rails 6 and 6.

The switchgear 5 is provided with a drive control unit 7 and an upper limit position detection unit 8 in the upper part of the main body thereof. Normally, when the control box 2a disposed near the opening 2 is opened, the shutter is opened. When the curtain 4 is fully opened, the shutter curtain 4 is wound up by the forward rotation drive of the switch 5, and when the shutter curtain 4 reaches the fully open position, the rotation drive of the switch 5 is stopped by the upper limit position detector 8. The shutter curtain 4 is wound and held around the winding drum 3a, and when the control box 2a is closed, the switch 5 is driven to rotate in the reverse direction under the control of the drive control unit 7 so that the shutter curtain 4 is rotated.
When the opening 2 is completely closed by lowering the rotation of the switch 5, the rotation drive of the switchgear 5 is stopped under the control of a not-shown lower limit position detection unit.

The upper limit position detecting section 8 is shown in FIGS.
As shown in the figure, 9-digit digit disks 9a, 9b, 9c, 9d, 9
e, 9f, 9g, 9h and 9i
And an interlocking gear mechanism 10, with an input gear 11a at one end.
Is connected to the interlocking gear mechanism 10, and the input gear 11 a is supported by a peripheral gear 5 b coaxially supported by the output shaft 5 a of the switch 5. A gear disk 9 is interlocked and connected via a gear 12, and is provided on an upper surface of a housing 8 a that houses the mechanisms 9 and 10.
A display window 8b is formed on the peripheral surface of a to 9i for visually confirming the numbers "0" to "9" from outside. Reference numeral 13 denotes a driving sprocket supported on the output shaft 5a of the switchgear 5, and 14 denotes a rotating shaft 15 of the winding drum 3a.
A drive chain (not shown) is suspended between the sprockets 13 and 14 to transmit the rotational driving force of the switch 5 to the winding drum 3a.

[0010] The counter section 9 includes a pair of girders 9a to 9
d and a five-digit integrating / counting unit 17 composed of the digit disks 9e to 9i are coaxially and operatively connected to each other. Are integrally fixed on one side and a rotary pin 1 is provided on the other side.
., 19,.
Are arranged in parallel with each other, and each rotating pin 1 of each of the digit disks 9a to 9i.
When the gear 9 is in contact with the gear feed gear 20, the gear is fed from the lower girder disk to the adjacent upper girder disk, and the rotation storage operation according to the rotation of the input shaft 11 is performed. It is configured.

As shown in FIG. 5A, a recess 21 is integrally formed on the outer peripheral surface of the uppermost spar disk 9d of the rotary storage mechanism 16, and the spar disk is formed as shown in FIG. 9
On the side of d, the actuator 2 faces the outer peripheral surface.
A limit switch 22 extending from the tip of the recess 2a is provided.
The limit switch 22 is opened by the tilting of the actuator 22a following the rotation of the switch 1, and the opening signal is sent to the drive control unit 7 to stop the rotational drive of the switch 5 and to raise the shutter curtain 4. And the rotating pin 19 'of the spar disk 9d abuts the spar feed gear 20' meshing with the rotating plate 18 'of the adjacent spar disk 9e, and The plate 9e is configured to be cut and fed.

On the other hand, the accumulation counting section 17 has a structure equivalent to that of the rotation storage mechanism 16, and the lowermost rotating plate 18 'of the girder disk 9e is arranged as shown in FIG. As shown, ratchet pawl 2 meshing in only one rotational direction
, 23,... Are formed around the rotating memory mechanism 16, and the rotating plate 18 'is rotated by rotating the digit feed gear 20' in the direction B, which is linked to the rotation of the uppermost digit disk 9d. Is rotated in the direction C and the rotation plate 18 'is not rotated in the direction B'.

In the above configuration, when the shutter 1 is newly installed in the building opening 2 and the first opening operation is performed by the control box 1a, an ascending signal is sent from the drive control unit 7 to the switchgear 5. Then, the switch 5 is driven to rotate forward,
The shutter curtain 4 starts to rise. At this time, in conjunction with the rotation of the output shaft 5a of the switchgear 5, the upper limit position detection unit 8
The input shaft 11 rotates through an auxiliary gear 12 meshing with the peripheral gear 5b, and its rotational driving force is transmitted to the counter unit 9 via the interlocking gear mechanism 10, and the rotation from the lowest digit disk 9a is started. Upon starting, when the girder disk 9a makes one rotation, the second girder disk 9b is fed from "0" to "9". Then, as the shutter curtain 4 rises, the digit-shifting operation of the digit disks 9a to 9d of the rotary storage mechanism 16 is sequentially continued, and all the numerical values of each digit become "9""9""9""9". Further, at the time when the gear feed operation is further performed, that is, when the shutter curtain 4 reaches the fully opened state, the rotation of the uppermost girder disk 9 d causes the actuator 22 a of the limit switch 22 to fall into the concave portion 21, The limit switch 22 is opened, and the rotation of the switch 5 is stopped. Also, linked to the rotation of the uppermost girder disk 9d,
The rotation pin 19 'of the girder disk 9d rotates the girder feed gear 20' by one step, and the rotation of the girder feed gear 20 'in the direction B causes the accumulation counting unit 17 adjacent to the girder disk 9d to rotate. The lower digit disk 9e is rotated via the rotary plate 18 'meshed with the digit feed gear 20', and the indication of the digit disk 9e is fed from "0" to "1". Become.

Next, as described above, the shutter curtain 4 which has been fully opened by the first opening operation is moved to the control box 2.
When the closing operation is performed by a, the switch 5 is driven to rotate in the reverse direction, the shutter curtain 4 starts to descend, and the input shaft 11 of the upper limit position detecting unit 8 is driven to rotate in the reverse direction, so that each digit circle constituting the rotation storage mechanism 16 The plates 9a to 9d also rotate in the reverse direction via the shift gears 20, 20,..., And the numerical value of each digit of the rotation storage mechanism 16 increases. The gear feed gear 20 'meshed with the moving plate 18' is rotated in the direction B 'by the reverse rotation of the rotating pin 19' protruding from the girder disk 9d.
'Is formed by ratchet claws 23, 23...
The reverse rotation force of the rotation pin 19 'is not transmitted to the rotation plate 18', and the count display of the integration counter 17 does not change. Thereafter, when the shutter curtain 4 is fully closed, the rotational drive of the switch 5 is stopped under the control of a not-shown lower limit position detection unit.

Therefore, when the shutter curtain 4 is moved up and down as described above, the integrating and counting section 17 provided in the upper limit position detecting section 8 is linked to the up and down control by the rotation storage mechanism 16 and every time the up and down operation is performed. The count value is incremented by "1", and the integrated count value can be easily visually checked from the display window 8b formed on the upper surface of the housing 8a. Can be used.

In the present embodiment, a configuration is shown in which the counting unit 17 having the same configuration as the rotation storage mechanism 16 is coaxially and interlocked, but the present invention is not limited to this.
And 17 may be separated and arranged in parallel, and may be configured to be interlocked and connected using a gear or a joint member.
Further, instead of the upper limit position detector 8, the integration counter 17 may be provided in a lower limit position detector (not shown). Further, the integrating and counting section 17 itself is not limited to a mechanical configuration in which a plurality of digit disks are arranged as in the present embodiment, and as shown in FIG. 6, the integrating and counting section 1 uses a decimal digital counter circuit.
7 may be configured.

That is, in FIG. 6, 24 is a pulse generator, 25 is a 5-digit counter circuit composed of BCD counters 26a, 26b,..., 27a, 27b are 7-segment displays with built-in driver circuits, and 28 is a NAND element. In the input circuit, a limit switch 22 linked to the rotation of the girder disk 9d of the rotation storage mechanism 16 is connected to the input circuit 28, and contact information for closing and opening of the limit switch 22 is provided. Converted to pulse signal, each BCD
Are input to the counters 26a, 26b,..., And the count value of the counter circuit 25, which is increased by decimal, is digitally displayed on each of the 7-segment displays 27a, 27b,. According to the above configuration, it is possible to mount the counting unit 17 in a position separated from the rotation storage mechanism 16, for example, in the control box 1 a, so that the user can easily confirm the number of times the shutter 1 is moved up and down. Become like

[0018]

In summary, the present invention relates to a rotating storage mechanism in which a plurality of girder disks are coaxially supported on a rotating shaft of a take-up drum on which a shutter curtain is wound, and a switch for a switch. In order to interrupt the power supply, a limit switch that opens and closes in conjunction with the carry rotation of the uppermost digit disk is installed in the rotation memory mechanism, and the number of carry operations of the uppermost digit disk is counted. Is connected to the rotation storage mechanism, the rotation storage mechanism for storing the fixed position of opening and closing the shutter curtain is effectively used without using an expensive and complicated electromagnetic counting device. The number of times the shutter curtain moves up and down can be counted simply and reliably, and inspection and maintenance can be performed appropriately in accordance with the frequency of use, and the smooth operation of the shutter can be maintained for a long period of time. It is intended to achieve the very useful practical effect equal.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a shutter.

FIG. 2 is an enlarged front view of the switchgear.

FIG. 3 is a perspective view of an upper limit position detection unit.

FIG. 4 is an enlarged plan view showing the inside of an upper limit position detection unit.

FIG. 5 (a) is an operation explanatory view showing the structure of the uppermost girder disk of the rotary storage mechanism. (B) is an operation explanatory view showing the structure of the lowest rotating plate of the integrating and counting section.

FIG. 6 is a circuit diagram showing another embodiment of the integrating and counting section.

[Explanation of symbols]

 3a Take-up drum 4 Shutter curtain 5 Switch 9a to 9i Girder disk 9d Girder disk located at the highest level 15 Rotation axis 16 Rotation memory mechanism 17 Accumulation counter 22 Limit switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotating storage mechanism having a plurality of girders coaxially supported on a rotating shaft of a winding drum on which a shutter curtain is wound, and a power supply of a switch is intermittently connected.
A limit switch that opens and closes in conjunction with the carry-up rotation of the uppermost digit disk is installed in the rotation memory mechanism, and an integrating counter that counts the number of carry-up operations of the uppermost digit disk, A shutter opening / closing control device connected to the rotation storage mechanism.