JPH0452784Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a flag hoisting machine.

[Background of the idea]

Conventionally, flag hoisting machines for hoisting flags such as national flags have a pulley attached to the top end of a pole buried in the ground, a rope for hoisting the flag is hung from the pulley, and the rope is pulled by hand to raise the flag. Attach a spool to the above-ground part of the pole to wind up the rope, and push a manual handle or rechargeable electric screwdriver into the rotating shaft of this spool to rotate it forward and backward. There was a person who was responsible for lifting and unloading.

However, with the method of pulling the rope by hand, there is a risk of getting your hands and clothes dirty, and after hoisting the flag, you have to tie the rope to a hook attached to a pole, for example, to make the flag stronger. If the flag must be fixed or uses a manual handle or electric screwdriver, store it in a separate location from the pole to avoid losing it, and carry it to the pole location each time you raise the flag. This is extremely complicated in terms of management and operation, as the user has to push it into the spool and then push it into the spool.

The present invention was devised against this background, and its purpose is to automatically raise and lower the flag without using any operating parts, and to raise the flag smoothly at a constant speed. To provide an easy-to-use flag hoisting machine which can be lowered and does not cause entanglement of ropes.

[Structure of the idea]

The flag hoisting machine according to the present invention has a cam and a rope winding spool that rotates freely in one direction inserted into a shaft rotated by a motor, and a spool that swings in contact with the cam at a position near the spool. In addition, a stop member is provided on the side wall of the spool to prevent the spool from reversing when it comes into contact with the stop member at a predetermined swing position during free rotation of the spool, thereby achieving the above purpose. is achieved.

〔Example〕

Embodiments of the flag hoisting machine according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway cross-sectional view of the upper end of a pole showing an embodiment of the present invention, in which 1 is a pole, 2 is an upper lid body for covering the upper edge of the pole, and 3 is a solar cell. .

The pole 1 is formed into a cylindrical shape, and a pulley 4 is attached to the upper end. A rope 5 is hung from this pulley 4, and one end of the rope 5 is attached to a pole 1.
while hanging the other end inside the pole 1.

The upper lid body 2 is made of a weather-resistant, transparent resin such as acrylic or polycarbonate.
The upper lid body 2 is fixed to the wide portion 1a provided at the upper edge of the pole 1 by screwing the mounting bracket 6 at a plurality of locations.

A solar cell 3 is provided at the upper part of the inner surface of the upper lid body 2.
is installed. This solar cell 3 is formed by providing a semiconductor junction in crystalline silicon or amorphous silicon, and is potted (sealed) or adhered to the upper lid body 2 with a transparent resin 7 such as silicone resin or EVA resin. Ru.

In FIG. 1, 8 is a lead wire for taking out the electromotive force of the solar cell 3, and this lead wire 8 is led to the drive device part below the pole 1 along the inner wall of the pole (the second (see figure).

FIG. 2 is a cutaway view of the drive device portion of the flag hoisting machine according to the present invention. Inside the pole 1 are a storage battery 9 for charging the electromotive force of the solar cell 3, a DC motor 10 driven by the storage battery 9, and a spool 1 for winding a rope rotated by the DC motor 10.
1 is stored. Further, the side wall of the pole 1 is provided with an operating section 12 consisting of a push button switch or the like covered with a resin film 12a.

The operation section 12 includes push button switches 31 and 3.
Front plate 12c where 6, 37, 38 are inserted
A recess and a through hole are formed in the. A small piece 12d made of metal, resin, etc. is interposed between the push button switches 31, 36, 37, 38 in this recess and the resin film 12a. Therefore, the resin film 12
Even if a nail, twig, etc. is pushed into the through hole from side a by mischief, no cracks will occur in the resin film 12a.

The storage battery 9 is composed of a Nikkad type storage battery or a lead sealed type storage battery.

A gear 14 is provided on the shaft of the DC motor 10.
is inserted, and from this gear 14, spur gear 1
5 and 16 to the shaft core 18 as rotational motion.

In addition, in FIG. 2, 21 is a shaft for manual operation provided at the tip of the shaft core 18. This manual operation shaft 21 is hidden by a panel 20 screwed to the side wall of the pole 1.

In particular, since a manual operation shaft 21 for driving the shaft core 18 is provided so that a manual handle (not shown) can be loaded, for example, the storage battery 9 may become over-discharged and the DC motor 10 cannot be driven. Even if it gets old, it will not affect the flag raising function.
Furthermore, by removing the panel 20, it can also be used as an oil filler port.

A cam 17 and a spool 11 are inserted into the shaft core 18 . This cam 17 is fixedly inserted into the shaft core 18 and always rotates in the same direction as the shaft core 18 as the shaft core 18 rotates. Spool 11
A stop member 15 is provided on the side wall of the cam 17 in contact with the cam 17 and swings from one end thereof as the cam 17 rotates. Further, the spool 11 is a one-way clutch mechanism in which a plurality of bearings 19 are interposed so that the spool 11 freely rotates in only one direction with respect to the axis 18, and a side wall portion of the spool 11 has a one-way clutch mechanism in which a plurality of bearings 19 are interposed so that the spool 11 freely rotates in only one direction. A stop member 22 is provided which comes into contact with the stop member 15 at a predetermined swing position when the stop member 15 is lowered, thereby inhibiting the reversal of the spool 11.

In the above configuration, when hoisting the flag, the third
As shown in Figure a, by rotating the DC motor 10 and rotating the axis 18 in the A direction, the spool 11 is simultaneously rotated in the A direction and the flag is hoisted. At this time, the spool 11 also rotates because the stop member 22 lifts the stop member 15. Also, the third
As shown in FIG. b, even if a torque in the B direction is applied to the spool 11 due to the weight of the flag after the flag has been hoisted, only the spool 11 will not be reversed in the B direction. That is, since the stop member 22 and the stop member 15 prevent the spool 11 from being reversed, the flag can remain raised. Next, when lowering the flag, as shown in FIG. By doing so, the stop member 15 is lifted by the eccentric cam 17, the spool 11 is rotated in the C direction due to the weight of the flag, and the flag is lowered.

In this case, if the rotational speed of the spool 11 increases, it will be slowed down by the bearing 19 and the shaft core 18. Therefore, the shaft center 18 and the spool 11 always rotate at substantially the same speed. As a result, the rope 5 never becomes loose or tangled.

A plurality of the stop members 22 may be provided in order to reliably prevent the spool 11 from reversing, and the cam 17 is not limited to a perfect circle, but may be formed into an irregular shape with a portion protruding.

FIG. 4 is a block diagram showing the electrical configuration of the present invention.

The solar cell 3 is connected to a storage battery 9 through a backflow prevention diode 30, and the storage battery 9 is connected to a chattering prevention circuit 32, a timer circuit 33, a forward/reverse control circuit 34, and an overcurrent detection circuit 35 through a power switch 31, respectively. It is connected. Further, the direct current motor 10 is connected to the forward/reverse control circuit 34 . In FIG. 4, numeral 36 is a push button switch for raising, numeral 37 is a push button switch for stopping, and numeral 38 is a push button switch for lowering, each of which is connected to the forward/reverse control circuit 34 via the chattering prevention circuit 32.

In the above configuration, when the power switch 31 is closed and the lift push button switch 36 is closed, the DC motor 10 rotates in the forward direction, and the motor 10 becomes overloaded after hoisting the flag. This is detected by the overcurrent detection path 35 and the DC motor 10 is stopped. Next, when the lower push button switch 38 is closed, the DC motor 10 rotates in the opposite direction.
The DC motor is stopped after a predetermined time set by the timer circuit 33. Incidentally, in either case of raising or lowering, the operation can be stopped by the stop push button switch 35.

[Effect of idea]

As described above, according to the flag hoisting machine according to the present invention, a cam and a rope winding spool that freely rotates in one direction are inserted into the shaft core rotated by a motor,
A stop member is provided near the spool to abut against the cam and swing, and a stop member is provided on the side wall of the spool to abut at a predetermined swing position of the stop member during free rotation of the spool to prevent the spool from reversing. Although it has an extremely simple configuration, it is possible to stop the movement of the flag by simply stopping the rotation of the axis without any special operations after the flag has been hoisted. Not only can this be done easily and reliably, but also when lowering the flag, by rotating the cam to move the stop member to an appropriate swing position, the flag can be lowered gradually and smoothly at a constant speed. Therefore, it is possible to provide a flag hoisting machine that is easy to use and has no rope slack or entanglement.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway cross-sectional view of the upper end of the pole showing an embodiment of the flag hoisting machine according to the present invention, Fig. 2 is a cutaway view of the drive unit, and Figs. 3a, b, and c are the spool portion. FIG. 4, which is a diagram for explaining the operation, is a block diagram showing the electrical configuration of the present invention. 1...Pole, 3...Solar cell, 4...Pulley,
5... Rope, 17... Cam, 9... Storage battery, 1
0...DC motor, 11...Spool, 12...
Operation unit, 15... stop member, 22... stop member.

Claims (1)

[Scope of utility model registration request] A cam and a spool for winding a rope that freely rotates in one direction are inserted into a shaft core rotated by a motor, and a stop member that swings in contact with the cam is provided near the spool, and The flag hoisting machine is provided with a stop member on a side wall of the spool, which comes into contact with the stop member at a predetermined rocking position during free rotation of the spool and prevents the spool from reversing.