JP3513692B2 - Supporting structure and supporting method for fixed shaft in winding drum - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding drum of a shutter device that opens and closes a building opening, and particularly when installing a winding drum having a balance coil installed in the upper portion of the building opening, the winding drum is pivotally supported. One end of the fixed shaft is supported by the driving side bracket in advance, and the driven side bracket supporting the other end of the fixed shaft is provided with a bearing fitting that allows the fixed shaft to rotate. The present invention relates to a support structure and a support method for a fixed shaft in a winding drum, which can improve workability in installation work.

[0002]

2. Description of the Related Art Conventionally, as a shutter device for opening and closing a building opening, a support shaft projecting at a shaft center position of a winding drum is interlockingly connected to an output shaft of an opening / closing machine to drive the support shaft in forward and reverse directions. In addition to the shutter device of the basic structure for winding and rewinding the shutter curtain, the supporting shaft of the winding drum is fixed and winding is performed by the cooperation of the switch and the balance coil installed in the winding drum. A configuration is known in which only the taking drum is rotationally driven. Here, in the latter configuration above,
Positioned on the output shaft side of the switch when supporting fixed shafts protruding from the axial center positions of the left and right ends of the winding drum between a pair of drive side and driven side brackets that are spaced apart from each other above the building opening. The fixed shaft is supported on the drive side bracket through a bearing bracket that has an open top surface, and the bearing bracket of the same structure is also attached to the other driven bracket to adjust the shutter curtain winding and rewinding. In doing so, the fixed shaft is appropriately rotated in each of the above bearing fittings, and after adjusting the cooperative operation of the balance coil and the opening / closing device when the shutter curtain is fully closed and fully opened, both shaft ends of the fixed shaft are bolted. It is fixed to each bearing fitting via a nut so that it cannot rotate.

Further, in addition to the above-mentioned structure, even in a manual shutter device in which the shutter curtain is opened and closed by using only the energy of the balance coil without using an opening / closing device, the upper surface supporting the fixed shaft is opened. -Shaped bearing fittings are attached to both spaced brackets,
Rotate the fixed shafts supported by the bearing fittings as appropriate to adjust the balance coil energy when fully open and fully closed, and at the end of this adjustment work, attach both shaft ends of the fixed shaft to each bearing fitting. It is designed to be fixed with bolts and nuts.

However, in the structure of each shutter device using the winding drum having the balance coil as described above, the bearing fittings whose upper surfaces are only opened are provided on both brackets, so that they are fixed during the installation work. Since there is a risk that the fixed shaft will fall out of the bearing fitting during the adjustment work of the balance coil while rotating the shaft, and finally both ends of the fixed shaft are fixed to the bearing fitting via bolts and nuts. However, it is not possible to make fine adjustments in balance adjustment, and some adjustment accuracy is compromised, and external force to the shutter case after installation is complete,
When the entire shutter device swings due to an earthquake, rattling of the fixed shaft is likely to occur, and even when readjustment occurs when balance adjustment is misaligned due to long-term use of the shutter device. However, there is a drawback that the adjustment work is carried out with the risk of the fixed shaft coming off.

[0005]

SUMMARY OF THE INVENTION In view of the above situation, the present invention was devised in the process of research and development for pursuing the reliability of the support structure of the fixed shaft in the winding drum and improving the efficiency of installation work. The purpose is to make it possible to securely support the take-up drum between the brackets of the shutter case without inducing the fixed shaft to fall off, even with a simple structure. It is an object of the present invention to provide a supporting structure and a supporting method for a fixed shaft in a take-up drum, which can easily perform fine adjustment in the above and can smoothly perform the installation work of the shutter device.

[0006]

In order to solve the problems, the technical means adopted by the present invention is to fix between a pair of brackets spaced apart from each other and protruding from the left and right ends of a winding drum containing a balance coil. In a shutter device configured to support a shaft and to wind and rewind a shutter curtain by driving a winding drum to rotate forward and backward around the axis of the fixed shaft, one end of the fixed shaft may be It is attached to one bracket via a lock device that can be fixed at a rotation angle, and the other bracket is provided with bearing fittings that support the other end of the fixed shaft, and the take-up drum is mounted between the brackets via the fixed shaft. It is characterized in that it is configured to allow rotation of the other end side of the fixed shaft supported in the bearing fitting when supported by the bearing, and as a technical means for improving the fixed shaft support method, In order to support a fixed shaft, which is formed by pivotally supporting a winding drum containing an inner coil around its axis, between a pair of brackets that are spaced apart from each other at the upper part of the building opening, prior to installation in the building opening. A lock device capable of fixing the fixed shaft at an arbitrary rotation angle is provided on one bracket, and one end of the fixed shaft is preliminarily supported by the one bracket through the lock device, while the other shaft is fixed to the fixed shaft. When installing the take-up drum in the building opening, first install the other bracket on the top of the building opening, and then install the other bracket on the bearing fitting provided on the building opening. It is characterized in that one end of the bracket, which supports the end and then supports one end of the fixed shaft via a locking device, is fixed to the upper part of the building opening.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 to 3, reference numeral 1 denotes a shutter device installed in a building opening 2. The shutter device 1 includes a driven-side bracket 3a, a driving-side bracket 3b, upper and lower face plates 3c, which are arranged on the left and right sides.
A shutter case 3 formed by 3d, cover bodies 3e and 3e, a erection frame 3f, and a mounting frame 3g is horizontally installed above the building opening 2, and a plurality of slats 4, 4, ...
A shutter curtain 5, which is formed by connecting the above and below in a vertical direction, is wound around a winding drum 6 via hanging portions 5a, 5a having a predetermined width, and the shutter case 3 in which the winding drum 6 is housed is guided from a guide rail. The shutter curtain 5 is extended or rolled up along the lines 7 and 7 to open the building opening 2
Is configured to open and close.

In the winding drum 6, intermediate wheels 9a and 9b are coaxially arranged at predetermined intervals between rotating wheels 8a and 8b arranged on the left and right, and the wheels 8a to 9b are provided on the peripheral surfaces thereof, respectively. The stays 11 and 11 are fitted in the respective throttle recesses 10, 10 ... With the formed throttle recesses 10, 10 ... aligned in the axial direction, and the stays 11 and 11 are configured as basket-shaped winding drums. The balance coils 13 and 14 are respectively inserted into the fixed shaft 12 which penetrates through the shaft cores of the wheels 8a to 9b, and the rotational driving force of an opening / closing machine 15 coaxially installed therein is applied to the winding drum 6 via the drive wheel 16. Configured to communicate.

The shaft ends 12a of the fixed shaft 12 are
Bearing brackets 1 provided with 12b on the driven side bracket 3a and the driving side bracket 3b of the shutter case 3, respectively.
7 and the lock device 18 in a state of being horizontally supported, the forward / reverse rotation drive of the opening / closing device 15 and each balance coil 1
Shutter curtain 5 in cooperation with the 3 and 14 livestock forces
It is designed to feed or wind up. The structure of the locking device 18 has the same structure as the bearing device of Japanese Patent Application No. 3-24592 filed previously by the present applicant, and its structure and operation will be omitted. Numeral 19 is a buffer coil ammunition that absorbs impacts when the winding drum 6 starts rotating and stops rotating, and numeral 20 is a transmitting / receiving antenna that controls the rotational driving and stopping of the opening / closing machine 15.

The bearing fitting 17 is, as shown in FIG.
A flat plate made of metal is bent upward in a U-shape to be formed by a bottom plate portion 17a and both side plate portions 17b, 17b sandwiching the bottom plate portion 17a, and a mounting surface 17c integrally formed on the mounting base end side of the respective portions 17a, 17b. And is engaged with the driven side bracket 3a by screwing, and at the upper edges of the both side plate portions 17b, 17b, beak-shaped locking claw portions 21, which face each other,
21 is integrally formed to project, and is configured to function as an upward stopper for the shaft end 12a of the fixed shaft 12 supported by the bottom plate portion 17a and both side plate portions 17b, 17b. Further, the tip end edges of the bottom plate portion 17a and both side plate portions 17b, 17b of the bearing fitting 17 are respectively bent outward to form a series of reinforcing flange surfaces 22.

In the above structure, when the opening / closing device 15 is driven to close the building opening 2, the take-up drum 6 is rotated in the rewinding direction via the opening / closing device 15 and the drive wheel 16 to cause the shutter curtain. 5 is a guide rail 7, 7
Descend along. Then, when the lowermost end of the shutter curtain 5 has landed on the floor, a lower limit switch (not shown) is activated to stop the rotational drive of the opening / closing device 15, and the building opening 2 is fully closed.

Further, when the building opening 2 in the fully closed state is opened, the opening / closing device 15 is driven to rotate the winding drum 6 in the winding direction in the same manner as described above. While being taken up by the take-up drum 6, it rises along the guide rails 7, 7 and when it is in a fully opened state, an upper limit switch (not shown) is actuated and the switch 15 stops rotating.

Closure of such a shutter curtain 5,
When the shutter device 1 that performs the opening operation is installed in the building opening 2, of the two shaft ends 12a and 12b of the fixed shaft 12 that penetrates the winding drum 6 at the time of product shipment, the shaft end 12b side is the lock device. 18 is previously supported by the drive-side bracket 3b via 18, and the balance coils 13 and 14 built in the winding drum 6 also hold the required power, and are fixed to the fixed shaft 12 by a locking pin (not shown). It is prevented from rotating between them and shipped from the manufacturing factory in the state of the winding drum 6 shown in FIG.

At the site where the shutter device 1 is installed, first, as shown in FIG. 2, the mounting frames 3g and 3g forming the shutter case 3 are vertically installed at a predetermined position in the building opening 2 at a predetermined interval. The erection frame 3f is horizontally installed between the respective upper parts. Then, the driven side bracket 3a to which the bearing fitting 17 is screwed in advance is attached to the attachment frame 3g located at the left end of the erection frame 3f, and then the shaft end 12a of the fixed shaft 12 is passed through the winding drum 6 while The shaft end 12 is supported while being supported on the tip surface of the bearing fitting 17.
The side b is pulled up to hold the winding drum 6 horizontally, and in this state, the shaft end 12a is advanced into the bearing fitting 17 until it passes through the locking positions of the locking claws 21, 21.

Here, the shaft end 12a of the fixed shaft 12 is provided with both side plate portions 17b, 17b and the bottom plate portion 17 of the bearing fitting 17.
and the upper half of the outer peripheral surface of the shaft end 12a is supported by
Since the locking claw portions 21, 21 provided on the both side plate portions 17b, 17b are engaged with each other, the shaft end 12a side does not come out upward. After that, if the drive side bracket 3b that supports the shaft end 12b side of the fixed shaft 12 is fixed to the mounting frame 3g that hangs at the right end of the erection frame 3f, the work of supporting the winding drum 6 is completed.

Next, at the stage when the work of adjusting the balance coils 13 and 14 of the horizontally wound winding drum 6 is started, the shutter curtain 5 is first moved to the predetermined position of the winding drum 6 via the hanging portions 5a, 5a. When the shutter curtain 5 is lowered to the fully closed state after being fastened to, the weight of the fully closed shutter curtain 5 and the balance coils 13, 1
4 is balanced, and in this state, the shaft end 12b is rotated by rotating the adjusting nut 18a of the lock device 18 attached to the drive side bracket 3b in the arrow direction as shown in FIG. 5B. Then, the balance coils 13 and 14 are used to adjust the power of the shutter curtain 5 so that the shutter curtain 5 is fully opened and fully closed. After that, the top and bottom plates 3
When the c and 3d and the cover bodies 3e and 3e are attached, the adjustment and assembly work of the winding drum 6 and the shutter case 3 is completed.

Therefore, in the above adjustment work, the shaft end 12b side of the fixed shaft 12 is fixed through the locking device 18, so that the shaft end 12a side of the fixed shaft 12 is a bearing fitting made of any bolt nut or the like. There is no need to fix it to 17, and the adjustment work itself can be easily fine-tuned by the adjustment nut 18a of the lock device 18,
The adjustment work can be performed in an orderly and smooth manner.

In place of the above-mentioned lock device 18,
As shown in FIG. 6, a nut 23 is attached to the drive side bracket 3b, and a fixing metal fitting 23 having a male screw portion 23c on the outer peripheral surface of a cylindrical portion 23b having a tapered surface 23a formed at the tip thereof is screwed to the cylindrical portion 23b. Inside of 24, tapered surface 23a
To form a taper portion 24a corresponding to the lock device 18 '.
May be configured.

Here, the adjustment work when the lock device 18 'is used is to insert the shaft end 12b of the fixed shaft 12 into the lock device 18' which is previously screwed into the tubular portion 23b with the nut 24 loosened. Then, the balance adjustment work at the installation site of the shutter device 1 is first performed on both brackets 3a, similarly to the adjustment using the lock device 18.
The winding drum 6 is temporarily supported between the 3b, and the weight of the shutter curtain 5 fixed to the winding drum 6 and the balance coils 13, 1
4 is adjusted by rotating the fixed shaft 12 with a gripping tool such as a pipe wrench, and when this adjustment is confirmed, the nut 24 of the lock device 18 'is tightened to fix the fixed metal fitting 23 side. By the fastening action of the taper surface 23a of the fixed shaft 1
The shaft end 12b of 2 is locked, and the balance coils 13 and 1
The adjustment of the power to save the shutter curtain 5 in the fully opened and fully closed state by 4 is completed.

[0020]

In summary, according to the present invention, the fixed shafts protruding from the left and right ends of the winding drum containing the balance coil are supported between the pair of brackets spaced apart from each other, and the fixed shafts are provided around the fixed shafts. In a shutter device configured to wind and rewind a shutter curtain by driving a take-up drum to rotate forward and backward, one end of the fixed shaft is fixed to one side through a lock device that can be fixed at an arbitrary rotation angle. A bearing fitting that is attached to the bracket and that supports the other end of the fixed shaft is provided on the other bracket. When the winding drum is supported between the brackets via the fixed shaft, it is supported in the bearing fitting. It is characterized in that the other end of the fixed shaft is allowed to rotate, and the fixed shaft, which is formed by pivotally supporting a winding drum containing a balance coil around the shaft center, is separated from the upper part of the building opening by a pair. In order to support between the pair of brackets, one of the brackets is provided with a lock device capable of fixing the fixed shaft at an arbitrary rotation angle prior to installation in the building opening, and fixed through the lock device. One end of the shaft is previously supported by one bracket, and the other bracket is provided with a bearing fitting that supports the other end of the fixed shaft.When installing the winding drum in the building opening, the other bracket is first supported. It is attached to the upper part of the building opening, and then the other end of the fixed shaft is supported by the bearing fittings provided on it, and then one bracket that supports one end of the fixed shaft via the locking device is attached to the upper part of the building opening. Since it is fixed, the lock device required for balance adjustment work of the shutter device is a connecting member between the drive side bracket and the fixed shaft in advance at the time of product shipment, though it has a simple structure. At the installation site of the shutter device, it is possible to perform not only the fine adjustment necessary for the adjustment work but also the fixing of the fixed shaft only by the balance adjustment on one side using only the lock device. Since the driven side bracket need only be provided with a bearing metal fitting that simply supports the shaft end of the fixed shaft, the shutter device can be installed smoothly and the safety and reliability are improved for a long time. The present invention has a useful new effect that the smooth opening and closing operation can be maintained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a shutter device.

FIG. 2A is a partially omitted perspective view showing a relationship between a winding drum and a bracket. FIG. 6B is an enlarged perspective view of a main part showing the relationship between the bearing fitting and the fixed shaft.

FIG. 3A is a side sectional view of a main part showing a mounting state of a shutter case on a driven bracket side. (B) is a partially omitted enlarged front view of the shutter case, a part of which is indicated by imaginary lines.

FIG. 4A is a front view of a bearing fitting. (B) is a side view same as the above. (C) is a top view same as the above.

FIG. 5A is a perspective view of a main part showing a mounting state of the erection frame, the mounting frame, and the driven-side bracket.
(B) is a principal part perspective view showing the connection between the drive side bracket to which the lock device is attached and the winding drum.

FIG. 6A is a side sectional view of a main part showing another example of the locking device. (B) is a principal part perspective view of the fixing metal fitting which comprises the same locking device.

[Explanation of symbols]

1 Shutter device 3 shutter case 3a Driven side bracket 3b Drive side bracket 5 shutter curtains 6 winding drum 12 fixed axis 17 Bearing bracket 18 Lock device 18 'locking device

Continuation of the front page (56) Reference JP-A-5-18167 (JP, A) JP-A-8-42270 (JP, A) Actually open 3-3-31698 (JP, U) Actually open 63-98990 (JP , U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E06B 9/174 E06B 9/17 E06B 9/56

Claims (2)

(57) [Claims] 1. A fixed shaft, which projects from both left and right ends of a winding drum containing a balance coil, is supported between a pair of spaced-apart brackets, and the winding drum is rotated forward and backward around the axis of the fixed shaft. In a shutter device configured to be driven to wind and rewind a shutter curtain, one end of the fixed shaft is attached to one bracket via a lock device that can be fixed at an arbitrary rotation angle, and the other The bracket is provided with a bearing fitting for supporting the other end of the fixed shaft, and when the winding drum is supported between the brackets via the fixed shaft, the other end of the fixed shaft supported in the bearing fitting is supported. A support structure for a fixed shaft in a winding drum, which is configured to allow rotation. 2. The building opening is provided for supporting a fixed shaft formed by pivotally supporting a winding drum containing a balance coil around an axis center between a pair of brackets spaced apart from each other at an upper part of the building opening. Prior to installation on the bracket, a lock device that can fix the fixed shaft at any rotation angle is provided on one bracket,
In addition, one end of the fixed shaft is previously supported by the one bracket through the locking device, and the other bracket is provided with a bearing fitting that supports the other end of the fixed shaft, and the winding drum is installed in the building opening. At this time, first, the other bracket is attached to the upper part of the building opening, then the other end of the fixed shaft is supported by the bearing fitting provided on the bracket, and then one end of the fixed shaft is supported through the locking device. A method for supporting a fixed shaft in a winding drum, characterized in that a bracket is fixed to an upper part of a building opening.