JPH0517096U - Winding transmission device for switchgear such as shutter - Google Patents

Abstract

(57) [Summary] [Purpose] When the winding transmission member is pulled, the drive shaft is rotated manually due to the engagement relationship between the rotary power transmission member and the wheel, so that the mechanism is simple and easy. Provided is a device capable of opening and closing a shutter and the like. In a winding transmission device for an opening / closing device such as a shutter, a turning power transmission member 2 that rotates in accordance with a turning motion of a drive shaft 1a of the opening / closing device such as a shutter and the turning power transmission member 2 are provided. While being surrounded from the outer peripheral direction, a wheel 3 around which the winding transmission member S is wound and rotated by its transmission driving force, the wheel 3 and the winding transmission member derivative 6 are attached, and the support member 4 is provided. An inclined plate 5 which can be swung to the left and right around the support member 4 as a rotation center is installed.
The winding transmission member S via the wheel 3 is wound around the winding transmission member guide 6, and when the drive transmission force of the winding transmission member S is applied, the inclined plate 5 is swung to rotate the rotation transmission member 2. The wheel 3 is brought into engagement under pressure,
The non-engaged state is set when not in operation. This allows the shutter to be opened and closed easily with a simple device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a winding transmission device for an opening / closing device such as a shutter installed on a ceiling.

[0002]

[Prior Art]

 Conventionally, there is a shutter that opens and closes with an external power source, for example, an electric motor that is driven by applying an AC voltage. The shutter is opened and closed by an open / close switch adjacent to the shutter during normal operation. However, since it must be able to open and close manually even when there is no power supply such as a power failure, a sprocket that rotates together with the shaft is fitted to the shutter drive shaft so that it will not be driven when the power is normally supplied. A chain wheel that surrounds in a non-contact state is installed, and the chain is wound around the chain wheel. Then, operate the lever adjacent to the chain wheel to release the non-contact state, engage the sprocket and the internal gear of the chain wheel to switch from electric to human power, and operate the chain to open the shutter. I am trying.

[0003]

[Problems to be solved by the device]

 However, the chain wheel is normally urged by an elastic member and supported in a state not in contact with the sprocket.To remove the chain wheel from the drive shaft, operate the lever adjacent to the chain wheel to drive the drive shaft shaft. After shifting the sprocket to the left, right, up, or down from the center and engaging the internal gear of the chain wheel, the chain operation is performed.To restore the current condition again, operate the gear to operate the chain. The wheel must be returned to its original biased position. Therefore, it is troublesome and dangerous to operate a switch such as a shutter installed near a high ceiling every time a power failure occurs.

In addition, the peripheral mechanism related to the chain wheel is complicated, problems are likely to occur, and the cost is increased.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present inventor has, in the first invention, a rotary power transmission member which is fitted to a drive shaft of an opening / closing device such as a shutter and rotates by being driven by the rotational movement of the drive shaft. And a wheel that surrounds the turning power transmission member from the outer peripheral direction thereof, winds the transmission member around the outer periphery of the rotation power transmission member, and rotates by the transmission driving force of the winding transmission member, and the wheel. An inclined plate which is rotatably attached and which is stopped by a support member and which can be swung to the left and right with the support member as a center of rotation, and an inclined plate which is attached to the inclined plate and wound around the wheel. When the drive transmission force of the winding transmission member is actuated by swinging the transmission member, the inclined plate is swung to bring the turning power transmission member and the wheel into an engaged state under pressure. And a winding transmission member guide that swings in the direction to bring them into a combined state. And Rukoto, in the second invention in contact with the wrapping connector member derivatives thereto, was to have an interlocking member interlocked with the swinging of the wrapping connector member derivatives were rotatable about a fulcrum.

[0006]

[Action]

 According to the above configuration, in the first invention, the wheel does not come into contact with the rotary power transmission member fitted to the drive shaft of the opening / closing device such as the shutter when the external drive force is working, such as when the power is turned on. When the external driving force is lost and the opening / closing device such as the shutter cannot be opened / closed, if the winding transmission member is pulled, the winding force is applied via the wheel and the tilting plate oscillates and swings. The power transmission member and the wheel are in the engaged state.

When the pulling force of the winding transmission member disappears, the inclined plate returns to its original position, and the turning force transmission member and the wheel are disengaged. Further, in the second invention, when a pressure is applied to the winding transmission member guide, the winding transmission member guide rotates in contact with each other.

[0008]

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3, a chain device main body 10 of a shutter opening / closing device is composed of an alloy-made front fixing plate 11 having a plane cross-section and a kite-like shape, and a side plate cross-section also having an alloy-like back plate 12. The front fixing plate 11 covers the back plate 12 so as to cover the back plate 12, and insertion holes are formed in the ribs 13 of the back plate 12 from the upper, lower, left, and right four corners of the front fixing plate 11 so that they can be screwed with the small screws 14. Is becoming

An electromagnetic solenoid (not shown) is attached to the inside of the chain device body 10, and the brake lining of the brake mechanism of the shutter opening and closing device (not shown) disposed on the back surface of the back plate 12 is normally energized to open the brake lining. The brakes are not applied when opening and closing the shutter. When the emergency stop switch is input or a power failure occurs, the brake lining is closed and breaks due to the non-excited state.

A hole 12a is bored in the back portion of the chain device body 10, that is, substantially in the center of the central surface of the back plate 12, and the end of the drive shaft 1 for opening and closing the shutter is inserted. In addition, a hole 18 is also formed in the front portion of the chain device body 10, that is, substantially in the center of the center surface of the front face fixing plate 11, and the cylindrical portion 19 is formed inside the chain device body 10 along the hole 18 and along the hole 18. It is formed substantially at a right angle to the front surface of 10. The drive shaft 1 and the input shaft 1a are connected to each other in the chain device body 10 via a shaft joint 16 that is fastened with a bolt 17 so as to be integrally rotatable. The a is received by the rolling bearing 20 attached to the flange portion 19, and the tip portion thereof is projected from the hole 18 of the chain device body 10.

On the front surface of the chain device body 10, an alloy inclined plate 5 formed in the shape of a front keyhole is attached above it via a washer 25 by a bolt 4 as a supporting member so as to be swingable left and right. There is. Then, a hole 21 larger than the hole 18 is bored at a position corresponding to the concentric axis of the front hole 18 of the chain device body 10, and as shown in FIG. A cylindrical portion 22 is formed to extend to the front side at a substantially right angle to the front surface of the, and a tip edge 22a thereof is bent inward at a substantially right angle.

A slightly curved elongated hole 44 is formed below the cylindrical portion 22, and a screw 45 screwed into the front surface of the chain device body 10 is inserted therethrough so that the inclined plate 5 does not incline more than necessary. It has become. Further, a fixing plate 43 is fixed below the elongated hole 44, and one ends of the coil springs 41 and 42 are attached thereto. Further, one end of the coil spring 42 is attached to a fixing plate 47 fixed to the side surface of the chain device body 10 with a bolt 46a and a nut 46b.

A rolling bearing 24 is disposed between the inclined plate 5 and the front surface of the chain device body 10 via a spacer 23, and is fitted and inserted in the cylindrical portion 22. Then, a trumpet-shaped frame 26 is fitted into the tubular portion 22 at a small diameter portion 26a from the front of the tubular portion 22 of the inclined plate 5, and a ring 27 externally fitted around the small diameter portion 26a and the small diameter portion. The rolling bearing 24 is fixed between the tubular portion 22, the tubular portion leading edge 22a, and the spacer 23.

The chain wheel 3 is fastened to the frame 26 by bolts 28 on the periphery of the large diameter portion of the frame 26. The chain wheel 3 is formed by fixing a pair of symmetrical alloy discs with bolts 28, and forms a groove 29 on the outer periphery when the chain wheel 3 is assembled. The short ring chain S is wound around this, and the ring portion is engaged with the convex portions 30 projectingly formed at predetermined intervals in the groove portion 29 to drive the chain S manually. ..

A disk 2 serving as a rotational power transmission member is fixed to the input shaft 1a corresponding to the inside of the chain wheel 3. A space 31 is formed between the outer circumference of the disc 2 and the chain wheel 3 so that the two can be kept in non-contact with each other, on the axis of the disc 2 and the axis of the hole 21 of the inclined plate 5 described above. As long as and, that is, the slanting plate 5 is not slanted or only slanted slightly, it is in a non-contact state.

A taper surface 34 is formed on the outer peripheral edge of the disk 2, and when the chain wheel 3 and the disk 2 are relatively eccentric, the taper surface 34 is formed by the chain wheel 3. When the chain S is further pulled, the axial torque of the chain wheel 3 is transmitted between the two surfaces 34, 35 under pressure.

The disc 2 is fixed by a key at the tip of the input shaft 1a, but it is also possible to freely use a spline or the like. A roller 6 made of a synthetic resin having a bolt inside is attached to the inclined plate 5 on the lower left side of the front surface by tightening a nut 33 through a bush 32 for alignment with the chain wheel 3, and in FIG. The chain S, which is hung around the chain wheel 3 and hung from the right side, is guided around the left side and hung around.

On the lower left side of the front face of the chain device body 10, a guide ring 8 that is hooked around the chain wheel 3 and hung from the left side in FIG. It is firmly fixed. A lever 7, which is an interlocking member, is arranged below the chain device body 10 and along the lower edge thereof to rotate in association with the roller 6. The base of the lever 7 is formed in a substantially L shape, and is attached to the lower right side of the front surface of the chain device main body 10 with a bolt 39 and a nut via a fixing member 36. The fixing member 36 itself is fastened together with the front fixing plate 11 and the rib 13 of the back plate 12 by the small screw 14.

A latching portion 38 is formed on the tip end side of the lever 7, and a lower attachment ring of a brake lining opening / closing wire 40 for activating an opening / closing mechanism of the brake lining (not shown) is latched. A mountain-shaped bulge 37 is formed in the upper part of the lever 7 near the center of the chain device body 10, and becomes integral with the inclined plate 5 when the inclined plate 5 is inclined to the right in FIG. It is designed to be pushed by the spacers 32 that move.

A coil spring 41 is locked to the bulging portion 37 of the lever 7 and always urges the lever 7 upward. In this chain device, the member is attached to the chain S so as to hang down to the left side in FIG. 1, but the roller 6 or the roller 6 or the like may be attached so that the chain S can be hung down to the right side depending on the installation situation of this device to the shutter. Mounting holes 49, 50 of the guide ring 8 are formed in left and right symmetrical positions on the front surface of the front fixing plate 11 and the inclined plate 5, and the fixing plates 47 are also fixed to both side surfaces of the chain device body 10.

Next, the operation of the chain device will be described with reference to FIGS. 4 (a) and 4 (b). The drive shaft 1 is attached near the upper ceiling of the opening that divides the room, and when the shutter is opened and closed, the drive shaft 1 is rotated by operating the open / close switch adjacent to the shutter. In this state, the disc 2 attached to the input shaft 1a rotates integrally with the drive shaft 1 without contacting the chain wheel 3 (FIG. 4 (a)).

At the time of a power failure, the drive shaft 1 and the input shaft 1a connected to the drive shaft 1 stop rotating, making it impossible to electrically open and close the shutter. At the same time, the electromagnetic solenoid is de-energized and the brake is applied. The lining is closed and the brake is applied to the rotation of the drive shaft 1. In this state, the chain S hanging down via the roller 6 is manually pulled downward.

Then, in FIG. 4B, the roller 6 first pushes the mountain-shaped bulging portion 37 of the lever 7 as the roller 6 moves to the right to rotate the lever 7 downward. Then, according to the rotation, the brake lining open / close wire 40 is pulled down to open the brake lining, so that the drive regulation of the drive shaft 1 is released even if the electromagnetic solenoid is in the non-excited state in the power failure state. ..

At the same time, the pressing force in the right direction is applied to the roller 6, and the inclined plate 5 itself inclines to the right centering on the bolt 4 serving as a supporting member, so that the chain wheel 3 is relatively biased with respect to the disc 2. In the inner space 31 of the chain wheel 3, the inner peripheral surface 35 is pressed against the taper surface 34 of the disc 2 so that the rotational torque can be transmitted between the two and 3, and if the chain S is continuously pulled as it is, the disc 2 is separated from the disc 2. On the contrary, torque is transmitted to the input shaft 1a and the drive shaft 1, and the shutter can be opened.

When the pulling force of the chain S disappears, the pressing force on the roller 6 disappears, so the inclined plate 5 naturally returns to its original position by the urging force of the coil spring 42, and the disc 2 and the chain wheel 3 are separated. Becomes the non-engaged state and the state shown in FIG. The lever 7 also returns to its original position by the biasing force of the coil spring 41. The urging force of the coil spring 42 can be easily changed by adjusting the mounting position of the bolt 46a.

In such a chain device for the shutter opening / closing device, the chain S can be simply pulled by in an emergency such as a power failure where the shutter cannot be opened by the opening / closing switch, or when the shutter is stopped by the stop switch. You can easily open the shutter. It is also possible to pull the chain S without the need to drive it by the motor when the shutter is stopped by the stop switch and to release the shutter slightly further. is there.

Further, as in the conventional case, this device can be installed while having a shutter stop safety function at the time of power failure that the brake lining is closed when the electromagnetic solenoid is not excited, and the brake lining is temporarily driven by the swing of the inclined plate 5. Since it can be opened, useless operations are not required and work efficiency can be improved. Further, mechanically, basically, the structure is simply composed of the inclined plate 5, the circular plate 2, the chain wheel 3 and the roller 6, and the structure is simple and no problems occur, and the cost can be reduced.

Further, since the inner peripheral surface 35 of the chain wheel 3 and the tapered surface 34 of the circular plate 2 are rotated by utilizing frictional resistance caused by pressure contact, when the drive shaft 1 is in a rotating state, Even if the disc 2 and the chain wheel 3 come into contact with each other, the risk of winding the chain S is very small. Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment and can be implemented in other modes.

For example, although the short ring chain is wound around the chain wheel 3 in this embodiment, it is also possible to wind the short ring chain around the sprocket. Further, the engagement between the disc 2 and the chain wheel 3 was the pressing force between the taper surface 34 and the inner peripheral surface 35, but if the outer peripheral surface of the disc 2 can be pressed freely, of course, the engagement of the gears is possible. It is also free to do so in a relationship.

Further, in this embodiment, the chain S is configured to hang down to the left side in FIG. 1 or FIGS. 4 (a) and 4 (b), but this is hung down to the right side by changing the attachment position of the member. It is free to do so, and it is also possible to attach the drive shaft 1 at any position. Further, in this embodiment, the invention is applied to a shutter, but it is of course possible to apply it to an iron grid or the like as long as the drive shaft is rotated to raise and lower.

Further, a plurality of drive shafts can be provided side by side so as to be openable and closable. For example, the present invention can be freely modified and implemented without departing from the scope of the invention.

[0032]

As described in detail above, in the first invention, the rotary power transmission member that is rotated by being driven by the drive shaft and the rotary power transmission member that surrounds the rotary power transmission member in the outer circumferential direction are wound around the outer circumference. A wheel that rotates the hanging transmission member and is rotated by the winding transmission member is provided, and when the winding transmission member is pulled, the drive shaft is rotated manually due to the engagement relationship between the turning power transmission member and the wheel. Therefore, the shutter can be easily opened and closed with a mechanically simple device.

In addition, in the second invention, since there is an interlocking member that interlocks and rotates under contact when a pressing force is applied to the winding transmission member guide, the winding transmission member guide This has the effect of transmitting a pulling force.

[Brief description of drawings]

FIG. 1 is a front view showing a winding transmission device of an opening / closing machine such as a shutter according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view showing a winding transmission device of an opening / closing machine such as a shutter.

FIG. 3 is an exploded perspective view showing a winding transmission device of an opening / closing device such as a shutter.

FIG. 4 is an explanatory view for explaining an operating state of a winding transmission device of a switch such as a shutter, in which (a) shows a state in which a winding transmission member is not pulled and (b) shows a winding transmission. The member is pulled.

[Explanation of symbols]

1, 1a ... Drive shaft, 2 ... Circular power transmission member disk, 3 ...
Wheel, 4 ... Support member bolt, 5 ... Inclined plate, S ...
A chain that is a winding transmission member.

Claims (2)

[Scope of utility model registration request] 1. A drive shaft (1,1) of an opening / closing device such as a shutter.
a) a rotary power transmission member (2) fitted to a) and rotated by following the rotary motion of the drive shaft (1, 1a), and one that surrounds the rotary power transmission member (2) from the outer peripheral direction thereof. , A wheel (3) that winds a winding transmission member (S) around its own circumference and rotates by the transmission driving force of the winding transmission member (S), and the wheel (3) is rotatably mounted. Wear and support members (4)
A slant plate (5) which can be swung to the left and right around the support member (4) as a rotation center, and is attached to the slant plate (5) and wound through the wheel (3). When the drive transmission force of the winding transmission member (S) is actuated by rotating the suspension transmission member (S), the inclined plate (5)
By swinging the rotating power transmission member (2) and the wheel (3)
And a winding transmission member guide (6) that swings in a direction in which the and are engaged under pressure and are disengaged when not in operation. apparatus. 2. An interlocking member (7) which is in contact with the winding transmission member guide (6), is interlocked with the swing of the winding transmission member guide (6), and is rotatable around a fulcrum (39). 3. The winding transmission device for an opening / closing machine such as a shutter according to claim 1, characterized in that: