JPH10198297A - Method for rotating signboard and rotary signboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the rotary signboard which minimizes maintenance such as inspection and replacement and is easily repaired. SOLUTION: The rotary signboard is so constituted that the rotation of an electric motor 70 is transmitted to the rotary signboard to rotate the whole rotary sign board 10. In this case, the electric motor 70 and the center of rotation of the rotary sign board 10 are made coaxial, and the rotation of the electric motor 70 put in a mast 20 fixed on the ground surface supporting the rotary signboard 10 is transmitted to a torque limiter 50, whose rotation is transmitted to a shaft 40 fixed to the rotary signboard 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating signboard, in which the contents displayed on the signboard can be seen from any direction by people around by rotating the signboard slowly. The purpose of the present invention is to obtain a revolving signboard that requires minimal maintenance for inspection and replacement and that can be easily repaired.

[0002]

2. Description of the Related Art A revolving signboard with a revolving signboard can be seen on a roof or site of a food shop, gas station, drug store, convenience store, various chain stores, etc. As for the size of the rotating signboard,
The signboard is 2 to 10 meters long, 2 to 5 meters wide, has a total height of 5 to 15 meters from the ground, and weighs 500 kg to 100 kg.
The signboard of 0Kg is rotating. At the time of rotation, the rotation of the electric motor was transmitted to the sign to rotate the entire sign.

[0003] As a first method of a power unit for rotating the entire rotating signboard, the rotation of the electric motor is transmitted to a gear box by a belt, the rotation of the gearbox is received by a bearing assembly, and the entire rotating signboard is rotated. I was In this case, the weight of the entire rotating signboard was supported by a turntable provided on the mast.

[0004] As a second method of the power unit for rotating the entire rotating signboard, the rotation of the electric motor is transmitted to a driving urethane shaft with a bearing by a belt, and the rotation of the driving urethane shaft is transmitted to the outer periphery of the driving urethane shaft. Transmitted to the outer periphery of the rotating shaft as a frictional force, and the rotating shaft was rotated by the frictional force to rotate the entire rotating signboard. In this case, the tension of the belt is adjusted by an adjusting device (a device for adjusting the distance between the electric motor and the drive urethane shaft by adjusting the bolt).

[0005]

However, in the case of such a conventional rotating signboard, the rotation of the electric motor is transmitted by the belt in both the first method and the second method. There was an inconvenience that regular inspections and replacements were required to keep up with the growth.

That is, in the first method, it is necessary to check the belt for tension and wear quite frequently (on a daily basis), and replacement of the belt is instructed every three years. Further, in the second method, in order to secure the frictional force, it is necessary to take into consideration the urethane wear in addition to the first method.

In both the first method and the second method, since various devices such as an electric motor and an adjusting device for stretching a belt are stored at a position considerably higher than the ground, daily inspection is extremely difficult. In addition, when these various devices break down, repairs have to be made at inconvenient locations. An object of the present invention is to solve such a problem.

[0008]

SUMMARY OF THE INVENTION The present invention provides an electric motor 7;
In a rotating signboard that transmits the rotation of 0 to the rotating signboard 10 and rotates the entire rotating signboard 10, the electric motor 70 and the center of rotation of the rotating signboard 10 are on the same axis, and the electric motor 70 is very close to the ground. The above-mentioned problem is solved by disposing it at a close position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a method of rotating a signboard for transmitting the rotation of an electric motor 70 to a signboard 10 to rotate the signboard 10, wherein the electric motor 70 is installed at a position close to the ground. The rotating signboard 10 is connected to the rotating signboard 10 by a connecting means 40, and furthermore, the rotating signboard 10 is capable of transmitting power from a mast 20 fixed to the ground, An electric motor 70 is housed inside the mast 20. Further, the center of rotation of the electric motor 70 corresponds to the center of rotation of the rotating sign 10 and the connecting means 4
It is characterized by being on the same axis as the center of rotation of zero.

Further, according to the present invention, in the rotating signboard for transmitting the rotation of the electric motor 70 to the rotating signboard 10 to rotate the entire rotating signboard 10, the center of rotation of the electric motor 70 and the rotating signboard 10 is the same. The rotation of the electric motor 70 housed inside the masts 20 and 120 fixed to the ground supporting the rotating signboard 10 is transmitted to the torque limiter 50. The rotation of the torque limiter 50 is controlled by the rotation signboard 10.
, And is characterized in that the weight of the rotating signboard 10 is supported by thrust bearings 30 disposed on the masts 20 and 120. A wheel 90 is provided between the revolving sign 10 and the masts 20 and 120 fixed to the ground to support rotation of the revolving sign 10 as a whole.
It is characterized in that the power transmission from 0, 120 to the rotating signboard 10 is performed by the slip ring 60,
The electric motor 70 is mounted on the mast 2 fixed to the ground.
The mast A121 is located closest to the ground at 0, 120,
It is characterized in that it is connected to the rotating signboard 10 by a shaft 140.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A signboard rotating method and a signboard according to the present invention will be described in detail with reference to the drawings with reference to embodiments.

(First Embodiment) FIG. 1 is a sectional view showing a first embodiment of a rotating signboard according to the present invention, and FIG. 3 is a sectional view of a slip ring used for the rotating signboard according to the present invention. It is shown.

As is apparent from FIG. 1, reference numeral 10 denotes a rotating signboard, and the rotating signboard body 10a and the seat 10b are integrally formed by welding or fixing with bolts (not shown). On the other hand, 40 is an axis, and axis A41 and axis B
43 and the shaft C45 are connected to each other by a joint A42 and a joint B44.
10b constituting the shaft 40 and the shaft C constituting the shaft 40
45 is connected to the rotating signboard 1 by screwing.
The 0 and the shaft 40 are also integrated.

Therefore, the shaft 40 also has the meaning of connecting means 40 for connecting the rotary sign 10 to an electric motor 70 described later and transmitting the rotation of the electric motor 70 to the rotary sign 10.
However, the connection between the seat 10b and the shaft C45 is not limited to the screw connection, but may be another connection method such as welding or bolting.

In this embodiment, the shaft 40 is connected to the shaft A41.
, The axis B43, and the axis C45.
It can be a book, two, three or more. The shaft 40
Uses a pipe material to make a structure with a hollow inside for wiring described later.

The total weight of the rotating sign 10 and the shaft 40 is supported by a mast 20 installed on the ground, and a seat 10b constituting the rotating sign 10 so that the rotating sign 10 rotates smoothly. And the seat 27 constituting the mast 20
, A thrust bearing 30 is provided.
The mast 20 is composed of a mast A21, a mast B23, a mast C25, and a seat 27. The components are connected together by bolts 22, 24, 26 so as to be integrated with each other. It is installed by bolts 29.

When the rotating signboard 10 rotates, the rotating signboard 1 is rotated such that the heavy rotating signboard 10 rotates smoothly.
0, a plurality of wheels 90 are arranged at equal intervals,
Rotation is supported by being in contact with the outer periphery of the zero. Wheel 9
No. 0 is a bearing-incorporated one with rubber formed on the surface.

The shaft 40 is connected to a motor 70 via a torque limiter 50 so that the rotation of the motor 70 can be transmitted. However, the connection between the shaft 40 and the motor 70 is not limited to the torque limiter 50,
A coupling joint may be used. In addition, the motor 70 is a mast A,
21. Outer cylinder 6 of slip ring 60
A bearing 80 is provided for positioning the inner cylinder 60a and the inner cylinder 60b.

In the case of the revolving signboard 10 according to the present invention, the revolving signboard body 10a needs nighttime illumination. For this purpose, electricity is transmitted from a ground power supply (not shown) to the rotating signboard 10 via the slip ring 60. The slip ring 60 includes an outer cylinder 60a and an inner cylinder 60b, and the outer cylinder 60a is a mast A2 forming the mast 20.
1, the inner cylinder 60b is fixed to the shaft 40
Is fixed to the shaft A41. Therefore,
The inner cylinder 60b is configured to be able to rotate together with the rotation of the shaft 40.

On the other hand, two grooves 60 are formed on the outer circumference of the inner cylinder 60b.
e is processed, and a brass ring 60 is provided at the bottom of the groove 60e.
f is provided in an insulated state. Further, the groove 60
e, several sets of contacts 60d are arranged at equal intervals between the outer cylinder 60a and the inner cylinder 60b.
Between the contact 60d and the contact 60d.
A spring 60c is provided for forcibly contacting 0e. Here, the purpose of the spring 60c, the contact 60d and the brass ring 60f is that the inner cylinder 60
While b is rotating, consideration is given to ensure that current flows from the outer cylinder 60a to the inner cylinder 60b.

With this configuration, electricity transmitted from a power source (not shown) on the ground is distributed to the mast A 21 forming the mast 20 and the outer cylinder 60 a forming the slip ring 60. Wiring 68 from the installed power supply
And the shaft 4 through the contact 60d and the brass ring 60f.
Electricity can be transmitted to the rotating signboard 10 via the wiring 69 to the rotating signboard body disposed inside the rotating signboard 10.

As another structural feature of the present invention, a power unit such as a motor 70, a torque limiter 50, and a slip ring 60 is a mast A which is the closest to the ground in the mast 20.
21. Thus, when each of the devices breaks down, the devices can be repaired on the ground. For this purpose, it is more effective to provide a repair window (not shown) on the side surface of the mast A21.

The sign rotating method and the sign according to the present invention are configured as described above, and the operation thereof will be described below.

When the entire rotating signboard 10 is to be rotated, when the motor 70 is operated, the rotation of the motor 70 is transmitted to the shaft 40 via the torque limiter 50. Axis 4
Since 0 is integrated with the rotating signboard 10, the rotating signboard 10 also rotates according to the rotation of the shaft 40. Rotating signboard 10
The thrust bearing 30 rotates while receiving the full weight. At the same time, the wheel 90 comes into contact with the outer periphery of the mast 20 so as to support the rotation, thereby enabling smooth rotation.

On the other hand, when the rotating signboard 10 is rotating, electricity sent from a power source (not shown) on the ground is supplied to the mast A 21 constituting the mast 20 and the slip ring 60.
The wiring 69 from the power supply disposed on the outer cylinder 60a, the contact 60d, and the wiring 69 to the rotating signboard main body disposed inside the shaft 40 via the brass ring 60f. Is sent to the rotating signboard 10 via. in this case,
Since the bearing 80 is arranged near the torque limiter 50, the positional relationship between the outer cylinder 60a and the inner cylinder 60b is accurately maintained.

In this manner, the electric motor 70 is placed near the ground.
By providing the torque limiter 50 and the slip ring 60, if any of these devices should fail, the repairing worker can be located on the ground to perform the repair.

(Second Embodiment) FIG. 2 is a sectional view showing a second embodiment of the rotating signboard according to the present invention, and FIG. 3 is a sectional view of a slip ring used for the rotating signboard according to the present invention. It is shown.

As is apparent from FIG. 2, a point different from the first embodiment of the rotating signboard according to the present invention is that the electric motor 70, the torque limiter 50, and the slip ring 60 are mounted on the mast 120 at a position considerably higher than the ground. This means that the mast B125 is provided. As a result, the shaft 40 which is also a connecting means does not need to connect a plurality of shafts, and has a simple configuration of only the shaft 140.
The mast 120 also has a neat configuration.

However, using the torque limiter 50, using the slip ring 60, using the wheel 90, using the thrust bearing 30, using the bearing 8
The use of 0 and the rotation center of the electric motor 70, the rotating sign 10 and the shaft 40 are on the same axis are the same as in the first embodiment.

The signboard rotating method and the signboard according to the present invention are configured as described above, and the operation thereof will be described below.

The rotation of the rotating signboard 10 is the same as that of the first embodiment except that the connection between the electric motor 70 and the rotating signboard 10 is based on only one simple shaft 140. The operation of the slip ring 60 for sending electricity from the power supply to the rotating signboard is the same as in the first embodiment. However, the electric motor 70 is located higher than the ground.
By installing a power unit such as the motor and torque limiter 50 and the slip ring 60, if any of these devices should be out of order, the repaired worker can be located on the ground and repaired. It becomes difficult.

[0032]

As is clear from the above description, the signboard rotating method and the signboard according to the present invention provide: Since the center of rotation of the electric motor and the main body of the signboard are on the same axis, the use of the V-belt becomes unnecessary, and the inspection and replacement of tension wear become unnecessary. 2. Equipment such as electric motors, torque limiters, and slip rings are located near the ground, making inspection and repair of equipment easier.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a rotating signboard according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of the rotating signboard according to the present invention.

FIG. 3 is a sectional view of a slip ring used for a rotating signboard according to the present invention.

[Explanation of symbols]

 ... Rotating signboard 10a ... rotating signboard body 10b ... seat 20 ... mast 21 ... mast A 22 ... bolt 23 ... Mast B 24 Bolt 25 Mast C 26 Bolt 27 Seat 29 Anchor bolt 30 Thrust bearing 40 ... Shaft 41 ... Shaft A 42 ... Joint A 43 ... Shaft B 44 ... Joint B 45 ... Shaft C 50 ... Torque limiter 60 Slip ring 60a Outer cylinder 60b Inner cylinder 60c Spring 60d Contact 60e Groove 60f Brass ring 61 Bolt 68 Wiring from power supply 69 Wiring to rotating signboard body 70 ··· Electric motor 71 ··· Bolt 80 ··· Bearing 90 ··· Wheel 120 ··· Mast 121 ··· Mast A 125 ··· Mast B 140 ··· ··axis

Claims (10)

[Claims] 1. A signboard rotating method for transmitting rotation of an electric motor (70) to a rotating signboard (10) to rotate the rotating signboard (10), wherein the electric motor (70) comprises:
A signboard rotating method, wherein the signboard is installed at a position close to the ground and connected to the rotating signboard (10) by a connecting means (40). 2. The method of rotating a signboard according to claim 1, wherein power can be transmitted to the rotating signboard (10) from a mast (20) fixed on the ground. 3. The signboard rotating method according to claim 1, wherein the electric motor (70) is housed inside the mast (20). 4. The center of rotation of the electric motor (70) is on the same axis as the center of rotation of the rotating signboard (10) and the center of rotation of the connecting means (40). 4. The method according to claim 1, wherein:
How to rotate the signboard described in one. 5. A rotating signboard for transmitting the rotation of an electric motor (70) to a rotating signboard (10) to rotate the entire rotating signboard (10), wherein the electric motor (70) and the rotating signboard (10). A rotating signboard characterized in that the center of rotation is on the same axis. 6. The torque limiter (50) transmits the rotation of the electric motor (70) housed inside a mast (20, 120) fixed to the ground supporting the rotating signboard (10) to a torque limiter (50). The rotating signboard according to claim 5, wherein the rotation of the rotating signboard (50) is transmitted to a shaft (40, 140) fixed to the rotating signboard (10). 7. A thrust bearing (30) disposed on the mast (20, 120) by weighting the rotating sign (10).
The revolving signboard according to claim 5, wherein the signboard is supported by a revolving sign. 8. A wheel (90) is provided between the rotating sign (10) and the mast (20, 120) fixed to the ground to support rotation of the rotating sign (10) as a whole. The rotating signboard according to any one of claims 5 to 7, characterized in that: 9. The mast (20, 12) fixed to the ground.
The rotating signboard according to any one of claims 5 to 8, wherein power transmission from 0) to the rotating signboard (10) is performed by a slip ring (60). 10. The electric motor (70) is arranged on a mast A121 closest to the ground of the mast (20, 120) fixed to the ground, and is connected to the rotating signboard (10) by a shaft (140). The rotating signboard according to any one of claims 5 to 9, wherein the rotating signboard is provided.