JP4625170B2 - Shutter up / down counting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric shutter installed in a building or the like, and its purpose is to count the number of times the shutter is moved up and down, and to perform maintenance / inspection work of the electric shutter according to the use state of the shutter. The present invention relates to a lifting / lowering counting device.
[0002]
[Prior art]
Today, in buildings such as buildings and stores, shutters for crime prevention and fire prevention are generally installed at main openings. Most of the shutters are electrically operated, and the winding drum is rotated by an opening / closing device having a driving source such as a motor, whereby the shutter curtain is wound or unwound to open or close the opening. Like to do.
[0003]
The shutter repeatedly raises and lowers the shutter curtain according to the purpose of the user / administrator. By repeating this raising and lowering operation, the bearing mechanism of the take-up drum gradually wears, and the take-up drum is There was a problem that it could not be smoothly rotated.
[0004]
In addition, since torque fluctuations gradually occur in the drive source of the take-up drum, the shutter administrator needs to pay attention to the number of times the shutter is raised and lowered and perform maintenance and inspection work according to the usage. It was. If the maintenance / inspection work is neglected, the shutter cannot be used smoothly over a long period of time.
[0005]
Therefore, as means for specifically displaying the usage frequency of the electric shutter, for example, an electromagnetic counting device is provided in the shutter opening / closing device to count the number of times the shutter is moved up and down, thereby maintaining / The inspection work was to be executed.
[Problems to be solved by the invention]
[0006]
However, since the electromagnetic counting device is relatively expensive, it is not easily installed in the switchgear, and the structure is very complicated. There are various problems, such as the necessity of the above, and this is a big barrier to the spread of electromagnetic counting devices today.
[0007]
In order to solve the above-mentioned problems, the present invention provides a low-cost and simple structure counting device for counting the number of times of raising and lowering. Therefore, it is possible to reliably realize maintenance and inspection work corresponding to the use situation.
[0008]
[Means for solving problems]
According to a first aspect of the present invention, there is provided a counting device for counting the number of times of raising and lowering a shutter, including a gear interlocking with the output shaft rotation of a shutter motor, In a shutter switch having a limit switch having a gear mechanism configured, counting in conjunction with each rotation, and outputting a signal at an arbitrary set count number, a forward rotation gear train or a reverse rotation gear It has a counter that counts the number of times of raising and lowering via a power transmission means that interlocks with the rotation of at least one of the rows, and the power transmission means can be rotated in the vicinity of a gear that interlocks with a counter that counts the number of times the shutter is raised and lowered And an elastic body fitted into a groove formed in the gear mechanism and the arm meshing with the gear, and the power transmission according to the rotation direction of the gear mechanism Stage swings forward or reverse rotation on the support shaft, the arms that meshes with the gear and configured to rotate the gear in a predetermined direction.
[0009]
The shutter lifting / lowering counting device according to claim 2 is the shutter lifting / lowering counting device according to claim 1, wherein there are two arms engaged with the gear, and the power transmission means rotates forward and reverse on a support shaft. The gear is configured to rotate in a predetermined direction by swinging in the direction and engaging one of the two arms with the gear.
[0010]
Lifting number counting apparatus according to claim 3, wherein the shutter is in the elevator number counting apparatus shutter according to claim 1, wherein said power transmission means, so as to fitted freely inserted drop into the groove forming the elastic body to the gear mechanism Configured.
[0011]
According to a fourth aspect of the present invention, in the shutter number-of-times counting apparatus according to the third aspect , the gear mechanism is configured by setting a gear ratio so that the elastic body is removed from the groove.
[0013]
Since the number of times of raising and lowering the shutter in the present invention is simple in structure, no special technique is required for handling, and since it can be manufactured at low cost, without significantly increasing the manufacturing cost of the shutter switch itself, The use frequency of the shutter can be confirmed reliably, and appropriate maintenance and inspection can be realized.
[0014]
In addition, the shutter lifting / lowering counting device of the present invention can arbitrarily set the winding or unwinding amount of the shutter to be counted as the number of lifting / lowering by adjusting the gear ratio of the gear mechanism. Therefore, it is possible to perform a counting operation with a higher degree of freedom according to the purpose of the manager, and to realize highly reliable maintenance and inspection.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows an electric shutter A installed in a front opening 1 in a building, a store, or the like, and a drum (hereinafter referred to as a drum) that winds and rewinds a shutter curtain 2 at the upper part of the opening 1. A casing 4 containing 3) (referred to as a winding drum) is installed.
[0016]
A pair of bearings (not shown) that rotatably support the winding shafts 3a and 3b of the winding drum 3 are attached to both ends of the casing 4, and a shutter curtain 2 is attached to the winding shaft 3a. A gear 5 (hereinafter referred to as a first gear) is fixed between the winding portion and the bearing.
[0017]
A gear 7 (hereinafter referred to as a second gear) connected to the first gear 5 and, for example, a chain 6 is provided in the vicinity of the take-up drum 3 (a lower portion in front of the take-up drum 3 shown in FIG. 1). Is mounted on the output shaft 8.
[0018]
The electric motor 9 includes a rotor (not shown), a speed reduction mechanism (not shown) that reduces the rotational speed of the rotor, and an output shaft 8 that transmits the reduced speed.
[0019]
That is, as shown in FIG. 2, the electric motor 9 includes a reduction mechanism (not shown) that reduces the rotational speed of the rotor that constitutes the electric motor 9 and transmits it to the output shaft 8, and a pair that rotatably supports the output shaft 8. Bearings 10a and 10b, and a counting device 11 for counting the number of times the shutter curtain 2 is moved up and down. The counting device 11 and the output shaft 8 are provided in the middle of the output shaft 8 and rotate together therewith. The driven gear 12 is engaged with the connecting gear 13a provided on the counting device 11 side so as to be interlocked.
[0020]
In the present embodiment, an example in which the driven gear 12 is provided in the middle of the output shaft 5 of the electric motor 9 will be described. For example, the driven gear 12 is configured to be provided on the speed reducer shaft in the middle stage of deceleration of a speed reduction mechanism (not shown). May be.
[0021]
The counting device 11 generally includes a counting unit 14 that counts the number of times the shutter curtain 2 is moved up and down, and a limit switch unit 15 that detects the upper and lower limit positions of the shutter curtain 2 and controls the driving of the electric motor 9. Yes. Hereinafter, the structure of the counting device 11 will be described in detail.
[0022]
FIG. 3 shows the counting device 11 viewed from the driven gear 12 (right side in FIG. 2) side shown in FIG. 2. For convenience of explaining the structure of the counting device 11, FIG. 11, the outer frame 16a (see FIG. 2) and the connection gear 13a are not shown.
[0023]
In FIG. 3, reference numeral 13b denotes a first interlocking gear that is inserted through the outer frame 16a not described above and is fixed to a mounting shaft 131 to which the connecting gear 13a is attached, and 17 is the first interlocking gear 13b. It is the 2nd interlocking gear which rotates by meshing with. Reference numeral 18 denotes a third interlocking gear that meshes with and rotates with the second interlocking gear 17, and a groove portion 19 having a predetermined depth is formed at one location on the outer periphery thereof.
[0024]
Reference numeral 20 denotes a fourth interlocking gear that rotates in mesh with the first interlocking gear 13b, and reference numeral 21 denotes a base gear of the limit switch 15a that rotates in mesh with the fourth interlocking gear 20. Reference numeral 22 denotes a base gear of the limit switch 15b that rotates in mesh with the third interlocking gear 18. In the present embodiment, the first to fourth interlocking gears 13b, 17, 18, and 20 are collectively referred to as a gear mechanism G, and the gear mechanism G rotates in the same direction as the first interlocking gear 13b. Is a forward rotating gear train, and the one rotating in the reverse direction to the first interlocking gear 13b is a reverse rotating gear train.
[0025]
In the vicinity of the third interlocking gear 18, a power transmission means 23 having two arms 23 a and 23 b arranged in an arc shape with bent ends is pivotally attached to the support shaft 24 so as to be rotatable by a predetermined angle. The other end of the power transmission means 23 located on the opposite side of the arms 23a, 23b can be inserted into and removed from the groove 19 formed on the outer periphery of the third interlocking gear 18 only. An elastic body 25 such as a leaf spring to be inserted is attached.
[0026]
In the vicinity of the power transmission means 23, a star gear 26 that rotates in mesh with the two arms 23a, 23b of the power transmission means 23 is rotatably attached to a rotary shaft 27. As shown in FIG. 4, in addition to the star gear 26, the rotary shaft 27 is rotatably mounted with a counter 28 that displays the number of times the shutter curtain 2 is moved up and down. It is supported between 16a and 16b. In FIG. 4, the power transmission means 23 and the support shaft 24 that rotatably supports the power transmission means 23 are omitted.
[0027]
As shown in FIG. 4, the counter 28 is composed of, for example, 5-digit digit disks 28a, 28b, 28c, 28d, and 28e engraved with numbers "0" to "9". A girder disk 28a for displaying a girder is attached to the star gear 26 so as to be capable of co-rotating and rotating on the rotating shaft 27, for example, by being integrally formed. The other girder disks 28b, 28c, 28d, and 28e are attached so as to rotate on the rotary shaft 27 when a predetermined rotational force is applied.
[0028]
Further, on one side surface of the girder discs 28b, 28c, 28d, 28e, a rotating plate 29 having a notch feed dog is fixedly secured to each of the girder discs 28a, 28b, 28c, 28d. A rotating pin 30 projecting at a predetermined position (in FIG. 4, the “3” position of the digit display engraved on the peripheral surfaces of the girder disks 28 a, 28 b, 28 c, 28 d) is arranged in parallel with the rotating shaft 27. The rotating plate 29 meshes with the shift gear 31 and rotates it by abutting and rotating the shift gear 31 provided, and sequentially shifts it to the upper digit disk.
[0029]
3 includes two limit switches 15a and 15b including the above-described base gears 21 and 22 that rotate in mesh with the third interlocking gear 18 and the fourth interlocking gear 20, respectively. The driving of the electric motor 9 is stopped at the preset upper limit position and lower limit position of the shutter curtain 2, respectively.
[0030]
As shown in FIG. 6, these two limit switches 15a and 15b are capable of rotating together with the base gears 21 and 22 meshing with the third and fourth interlocking gears 18 and 20, for example, an integrally formed drive. A plurality of (four in FIG. 6) digit circles that sequentially shift the gear 32 and the rotation of the drive gear 32 to the upper order through a shift gear 33 and a rotation plate 33 and a rotation pin 34 (not shown). A drive transmission mechanism including the plate 35 is provided and is schematically configured. The structures of a shift gear (not shown), a rotating plate 33, a rotating pin 34, and a girder disk 35 constituting the drive transmission mechanism portion of the limit switch unit 15 are the same as those described in FIG. Therefore, although explanation is omitted, it is not necessary to engrave the digit display on the digit disk 35 in particular.
[0031]
The uppermost girder disk (the leftmost girder disk shown in FIG. 6) 35 of the girder disks is configured, for example, by fixing a fan-shaped cam 36 to a rotating plate 33 ( As shown in FIG. 7, the limit switch main body 38 is provided with the lever 37 that is in contact with the cam 36 being slightly rotated about the axis 37 a by rotating the cam 36 together with the rotation plate 33. The switch operating rod 40 is turned on and off by pushing or returning the operation piece 39 made of a spring member.
[0032]
When the switch operating rod 40 is turned on / off, the electric motor 9 shown in FIGS. 1 and 2 switches between driving (forward / reverse rotation) and stopping, and the shutter curtain 2 is set to the upper limit or lower limit of the opening 1. It can be stopped reliably at the position. In this embodiment, of the two limit switches 15a and 15b, 15a is a limit switch that stops driving the electric motor 9 when the shutter curtain 2 reaches the upper limit position, and 15b is the lower limit of the shutter curtain 2. A description will be given of a limit switch that stops driving the electric motor 9 when the position is reached.
[0033]
Next, the operation of the counting device 11 composed of the counting unit 14 and the limit switch unit 15 will be described. When the operator first operates the shutter opening switch 41 after installing the electric shutter A in the opening 1 of the frontage shown in FIG. 1, the shutter opening command is transmitted to a control device (not shown), and the electric motor shown in FIG. 9 is driven to rotate forward.
[0034]
Then, the second gear 7 attached to the output shaft 8 of the electric motor 9 and the first gear 5 attached to the take-up shaft 3a of the take-up drum 3 are linked via the chain 6 so that the take-up is performed. The opening of the opening 1 is started by rotating the drum 3 in the direction in which the shutter curtain 2 is wound up.
[0035]
When the electric motor 9 rotates the output shaft 8, the driven gear 12 attached to the output shaft 8 meshes with the connecting gear 13a provided on the counting device 11 side (see FIG. 2), and rotates it. The counting device 11 is activated. That is, with the rotation of the connecting gear 13a, the first interlocking gear 13b fixed on the same axis as the connecting gear 13a starts to rotate.
[0036]
The rotation of the first interlocking gear 13b is sequentially transmitted to the third interlocking gear 18 via the second interlocking gear 17, as shown in FIG. When the third interlocking gear 18 starts to rotate, the elastic body 25 of the power transmission means 23 whose tip is inserted into the groove portion 19 formed on the outer periphery of the interlocking gear 18 is connected to the third interlocking gear 18. The power transmission means 23 is moved counterclockwise on the support shaft 24 by the urging force of the elastic body 25 due to the rotation of the third interlocking gear 18 by the rotation of the third interlocking gear 18 as shown in FIG. Rotate.
[0037]
As a result, one arm 23b of the power transmission means 23 meshes with the star gear 26 and slightly rotates it clockwise. Then, the girder disk 28a of the lowest girder shown in FIG. 4 configured so as to be capable of co-rotating with the star gear 26 rotates slightly on the rotation shaft 27, and the girder display engraved on the girder disk 28a is displayed. It is changed so that it is in the middle of shifting from “0” to “1” (around the middle of 0 and 1).
[0038]
When the shutter curtain 2 shown in FIG. 1 gradually rises and the rotation of the first interlocking gear 13b is transmitted to the base gears 21 and 22 via the third and fourth interlocking gears 18 and 20, When the shutter curtain 2 reaches the upper limit position, the limit switch 15a provided with the base gear 21 inserts the switch operation rod 40 shown in FIG. 7 to reliably drive the electric motor 9 shown in FIGS. Can be stopped.
[0039]
Next, when closing the shutter curtain 2 which has been opened by the first opening operation, when the operator operates the shutter closing switch 42 shown in FIG. 1, the motor 9 is controlled by the control device (not shown). The output shaft 8 is rotated in the direction opposite to that when the motor is opened.
[0040]
The reverse rotation of the output shaft 8 is transmitted from the second gear 7 attached to the output shaft 8 to the first gear 5 via the chain 6, and rotates the rotating drum 3 in a direction to rewind the shutter curtain 2.
[0041]
As a result, the shutter curtain 2 starts to descend, and the driven gear 12 attached to the output shaft 8 of the electric motor 9 rotates the connecting gear 13a of the counting device 11 in the direction opposite to that when the shutter curtain 2 is opened. As a result, the first, second, and third interlocking gears 13b, 17, and 18 in the counting device 11 also rotate in the opposite direction to that when the shutter curtain 2 is opened, and the state shown in FIG. The motive power transmission means 23 is changed to the state shown in FIG.
[0042]
That is, the elastic body 25 of the power transmission means 23 in the state of FIG. 8B is once inserted into the groove 19 by the third interlocking gear 18 rotating in the reverse direction (counterclockwise). Then, it comes out of the groove 19 again and shifts to the state shown in FIG.
[0043]
In the state shown in FIG. 8C, the power transmission means 23 rotates on the support shaft 24 in the clockwise direction by the urging force of the elastic body 25 as the third interlocking gear 18 rotates counterclockwise. Then, one arm 23a is meshed with the star gear 26, and the star gear is slightly rotated clockwise (same direction as when the shutter curtain 2 is opened).
[0044]
Then, the girder disk 28a of the lowest girder configured so as to be capable of co-rotating with the star gear 26 slightly rotates on the rotation shaft 27, and the girder display is changed from an intermediate position between “0” and “1”. Carry up to position “1”.
[0045]
When the first interlocking gear 13b rotates in the opposite direction to that when the shutter is opened, naturally, the base gears 21 and 22 of the limit switches 15a and 15b shown in FIG. 3 also rotate in the opposite direction to that when the shutter is opened. When the shutter curtain 2 reaches the lower limit position, the limit switch 15b provided with the base gear 22 inserts the switch operation rod 40 shown in FIG. 7 and reliably stops the driving of the electric motor 9 shown in FIGS. can do.
[0046]
That is, the lifting / lowering counting device according to the present invention is configured to raise the display digit of the digit disk 28a by one when the shutter curtain 2 performs both the raising and lowering operations.
[0047]
When the raising / lowering operation of the shutter curtain 2 is further repeated, the counting unit 14 of the counting device 11 shown in FIG. 4 carries the digit disk 28a of the lowest digit up to “9” and then returns to “0”. . However, since the rotary pin 30 protrudes from the side surface of the digit disk 28a at the position where the digit display is "3", the digit display of the digit disk 28a changes from "9" to "0". The rotating pin 30 meshes with the shift gear 31 and rotates it (see FIG. 5).
[0048]
The rotation of the shift gear 31 is transmitted to the rotating plate 29 of the girder disk 28b to rotate the upper digit disk 28b.
[0049]
Thereby, the digit disk 28b changes the display digit from “0” to “1”, and the number of times the shutter curtain 2 is moved up and down is set to “10”. Thereafter, each time the shutter curtain 2 is moved up and down, the digit is sequentially raised from the girder disk 28b to the girder disk 28c, the girder disk 28d, and the girder disk 28e by the same operation as described above. Count the number of times the curtain 2 is raised and lowered.
[0050]
When five girder disks are provided as shown in FIG. 4, the number of times the shutter curtain 2 is moved up and down can be counted up to a maximum of “99999”. After counting the number of times of ascent and descent to “99999”, the count value is set to “00000” again and the same operation as described above is repeated.
[0051]
Further, the lifting / lowering counting device of the present invention adjusts the gear ratio of the first, second, and third interlocking gears 13b, 17, and 18 to adjust the lifting / lowering position of the shutter curtain 2 that counts the number of times the shutter is moved up and down. Can be changed arbitrarily.
[0052]
For example, with the gear ratio of the first, second, and third interlocking gears 13b, 17, and 18, the elastic body 25 of the power transmission means 23 shown in FIG. If the shutter gear 2 is adjusted so as to be disengaged from the groove portion 19 of the third interlocking gear 18, the number of times the shutter is raised and lowered can be counted without fully opening or closing the shutter curtain 2.
[0053]
Further, when the shutter curtain 2 is fully opened (completely closed) with respect to the gear ratio of the first, second, and third interlocking gears 13b, 17, and 18, the elastic body 25 of the power transmission means 23 shown in FIG. If it is adjusted so as to be disengaged from the groove portion 19 of the interlocking gear 18, the actual number of times of raising and lowering the shutter can be accurately counted, and a more reliable maintenance / inspection operation becomes possible.
[0054]
In the above-described embodiment, the description has been given by taking as an example the case where the connecting gear 13a and the power transmission means 23 shown in FIG. 2 are constituted by the three interlocking gears 13b, 17 and 18, but the number of the interlocking gears is three. The number is not limited to one, and any number is possible as long as the rotation of the coupling gear 13a can be transmitted to the power transmission means 23. Also, the number of girder discs is not limited to five, and may be added and reduced as appropriate so that the number to be counted can be displayed.
[0055]
Further, the star gear 26 is not limited to the clockwise rotation, but may be configured to rotate in the counterclockwise direction. This can be easily realized by adjusting the meshing angle between the two arms 23 a and 23 b of the power transmission means 23 and the star gear 26. When the star gear 26 is rotated counterclockwise, the digit display on the girder disks 28a to 28e is naturally engraved in the direction opposite to that shown in FIG.
[0056]
Further, the present invention may be configured such that the display digit of the girder disk 28a is raised by one each time the two arms 23a, 23b of the power transmission means 23 are engaged with the star gear 26, respectively. Is valid. In other words, either one of the opening and closing operations of the shutter curtain 2 may be counted by the counter 28, and maintenance / inspection work corresponding to the number of times the shutter is used may be executed.
[0057]
As described above, the device for counting the number of times of raising and lowering the shutter according to the present invention can realize a device for counting the number of times the shutter is used with a simple structure, and does not require any special advanced technology for its handling. It can be easily installed by effectively using the dead space existing in the shutter switch.
[0058]
In addition, unlike a conventional electromagnetic counting device, it can be manufactured at a relatively low cost, so that maintenance and inspection work of the electric shutter can be easily realized.
[0059]
【The invention's effect】
Since the shutter lifting / lowering counting device according to the present invention reliably displays the number of times the shutter is lifted / lowered, the administrator can easily realize maintenance / inspection work according to the number of times of lifting / lowering the shutter by checking the display. As a result, it is convenient that the failure location can be quickly identified and repaired quickly.
[0060]
Moreover, lifting the number counting apparatus sheet Yatta of the present invention, because of the configuration of the power transmission means with a relatively simple structure, its handling is easy, also because it inexpensively manufactured, it is economical.
[0061]
Furthermore, the number of times of raising / lowering the shutter of the present invention is set such that the count value of the counting device is added at the shutter open / close position desired by the administrator by adjusting the gear ratio of the gear mechanism. This makes it possible to maintain and inspect the shutter with a high degree of freedom.
[Brief description of the drawings]
FIG. 1 is a front view showing a general electric shutter.
FIG. 2 is a cutaway sectional view of a main part of the shutter motor.
FIG. 3 is a configuration diagram showing a positional relationship among a gear mechanism, power transmission means, and a limit switch of the lifting / lowering counting device of the present invention.
FIG. 4 is an operation explanatory diagram for explaining a shift operation in a counting unit of the ascending / descending frequency counting device.
FIG. 5 is an operation explanatory diagram for explaining a situation in which a girder disk and a shift gear constituting the counting unit operate in conjunction with each other.
FIG. 6 is a side view of a limit switch constituting the lifting / lowering counting device.
FIG. 7 is a longitudinal sectional view showing the structure of the limit switch from the front.
FIG. 8 is an operation explanatory diagram illustrating a situation where the gear mechanism and the power transmission unit operate in conjunction with each other.
[Explanation of symbols]
2 Shutter curtain 3 Winding drum 5 First gear 7 Second gear 8 Output shaft 9 Motor 11 Counting device 12 Driven gear 13a Connecting gears 13b, 17, 18, 20 First to fourth interlocking gears 14 Counting unit 15 Limit Switches 15a, 15b Limit switch 19 Grooves 21, 22 Base gears 23a, 23b Arm 24 Support shaft 25 Elastic body 26 Star gear 27 Rotating shaft 28 Counters 28a-28e, 35 Digit discs 29, 33 Rotating plates 30, 34 Rotating pin 31 Shifting gear 32 Drive gear 36 Cam 37 Lever 37a Shaft center 38 Limit switch body 39 Operation piece 40 Switch operation rod A Electric shutter G Gear mechanism

Claims (4)

A gear mechanism that includes a gear interlocking with the rotation of the output shaft of the shutter motor, a forward rotation gear train that transmits the rotation of the gear to the forward rotation and the reverse rotation, and a reverse rotation gear train; Power transmission means that interlocks with rotation of at least one of a forward rotation gear train and a reverse rotation gear train in a shutter opening / closing device having a limit switch having a counter that counts and outputs a signal at an arbitrary set count A counter that counts the number of times of raising and lowering through the arm, and the power transmission means is rotatably mounted in the vicinity of a gear that interlocks with the counter that counts the number of times the shutter is raised and lowered, and an arm and a gear mechanism that mesh with the gear In accordance with the rotational direction of the gear mechanism, the power transmission means swings forward or backward on the support shaft, and the arm By meshed into the car, lifting the number counting apparatus shutter, characterized by being configured to rotate the gear in a predetermined direction. There are two arms that mesh with the gear, and the power transmission means is
It is configured to swing in a forward / reverse rotation direction on a support shaft and to rotate the gear in a predetermined direction by engaging either one of the two arms with the gear. Item 2. The apparatus for counting the number of times the shutter is moved up and down. 2. The apparatus for counting the number of times of raising and lowering a shutter according to claim 1 , wherein the power transmission means is detachably inserted into a groove formed in the gear mechanism . The shutter gear counting device according to claim 3 , wherein the gear mechanism is configured by setting a gear ratio so that the elastic body is removed from the groove .

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