JPS587414Y2 - rotating advertising device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to improvements in rotating advertising devices.

Conventionally, in this type of advertising device, the signboard or its support frame is directly driven to rotate by the motor, so if the rotation of the signboard or support frame is prevented for some reason, the motor may burn out. This has the drawback of causing damage to the transmission mechanism, and there is also the risk of an accident in which clothes or other items become entangled.

The present invention eliminates these drawbacks of conventional products, and provides a device that stops the rotation of the signboard or support frame, regardless of the rotational drive of the motor, when the rotation of the signboard or support frame is blocked. The purpose is to provide a simple structure and a low cost.

Hereinafter, an example of the implementation of the present invention will be explained with reference to the drawings.The signboard frame 1 supports the signboard 5, and is formed into a polygonal shape such as a cylinder or a triangle as a whole, and the signboard frame 1 is formed in a polygonal shape such as a cylindrical shape or a triangle as a whole, and the signboard frame 1 supports the signboard 5. The pillar 2 is loosely inserted, and a light source 6 for internal illumination, a motor 3 for rotating the signboard frame 1, and a transmission member 4 are arranged in a housed manner.

The pillar 2 is fixed vertically to the stand 7, or supported by being attached to a wall on both sides, or suspended from above, and installed in a fixed manner with respect to the rotating signboard frame 1. It is.

A motor 3 is attached and fixed to the column 2, and a thrust bearing 8 that supports a transmission member 4 is attached.

The transmission member 4 is made up of two upper and lower members 4a and 4b that can be engaged with each other. The power of the motor 3 is connected to the member 4b side.

That is, in the illustrated example, the transmission member is a dog clutch that spins idly when a force in the direction opposite to the rotation of the signboard frame 1 is applied, and the upper and lower clutches 4a and 4b are shaped like donuts at the bottom and rotated by the support 2. The upper and lower clutches have step portions 9a and 9b that can be loosely fitted and locked only in a certain direction on opposing surfaces of the upper and lower clutches, and a collar 10 that supports and fixes the signboard frame 1 is integrally formed on the upper surface of the upper clutch 4a. A gear 12 that meshes with the drive gear 11 of the motor 3 is integrally provided on the lower surface of the lower clutch 4b, and the lower clutch 4b is supported by a thrust bearing 8 attached to the support column 2.

It is also possible to transmit the power of the motor to the lower clutch using a pulley or the like without providing the lower clutch 4b with a gear that meshes with the drive gear of the motor.

Although not clearly shown in the drawings, the opposing surfaces of the upper and lower members 4a and 4b of the transmission member 4 may be formed into planar shapes, and the upper and lower members may be molded from a material with a large coefficient of friction such as a rubber material. can also be considered.

Since the present invention is constructed in this manner, in normal use, when the motor 3 is driven, the drive gear 11 is
The lower member (lower clutch) 4b of the transmission member 4 rotates via this, and the upper member (upper clutch) 4a rotates as a unit.

Then, the signboard frame 1 attached to the upper member (upper clutch) also rotates to display an advertisement.

However, if the rotation of the signboard frame 1 is prevented for some reason, the upper member of the transmission member (meshing clutch) 4 (
The upper clutch) and the lower member (lower clutch) are disengaged (the dog clutch is disengaged), and the motor 3 to the lower member (lower clutch) 4b continue to rotate, but the upper member (upper clutch)
4a stops.

Therefore, even if the rotation of the signboard frame is blocked while the motor is being driven, there is no risk of the motor burning out or damage to the transmission member, and there is also no risk of clothing or the like being accidentally caught in the motor.

Moreover, by using a dog clutch as a transmission member, an impact sound is generated when the upper and lower clutches are disengaged while the upper and lower clutches are idling, and it is possible to draw attention to a distant place.

In addition, in the present invention, a transmission member such as a dog clutch is loosely inserted into a support column, and a signboard frame is attached to the transmission member, so the structure is simple and easy to manufacture, and it can be provided at a low cost, making it highly practical. It is a very big thing.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the rotary advertising device of the present invention, with FIG. 1 being a front view partially cut away vertically, and FIG. 2 being a perspective view showing an example of a dog clutch. In the figure, 1...Signboard frame, 2...Strut, 3...Motor, 4...Transmission member (meshing clutch), 4a...
Upper member (upper clutch), 4b...lower member (lower clutch).

Claims (1)

[Claims for Utility Model Registration] ■ A support post 2 is loosely inserted into a signboard frame 1, and a transmission member 4 for transmitting the power of a motor 3 to the signboard frame is rotatably supported on the support support, and the transmission member is A rotary advertising device comprising two members, an upper and a lower member, which can be engaged with each other in close and detachable relation, and characterized in that a signboard frame is fixed to the upper member side of the transmission member, and the power of a motor is connected to the lower member side of the transmission member. ■ The transmission member 4 consists of a dog clutch that spins idly when a force is applied in the opposite direction to the rotation of the sign frame, and the sign frame is fixed to the upper clutch of the dog clutch, and a gear is protruded from the lower clutch. A rotating advertising device according to claim 2 of the utility model registration claim, in which a driving gear of a motor is meshed with each other. (2) The rotating advertising device according to claim (2), in which the upper and lower members constituting the transmission member 4 are made of a material with a large coefficient of friction, and the opposing surfaces of the upper and lower members are flat.