JPS6312383Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a signboard that rotates around a central axis,
The present invention relates to a connection structure between the signboard section and its rotational drive section in a rotating display device such as a display board.

(B) Prior Art In the conventional rotary display device, the signboard section and the drive section are completely fixedly connected, so if the signboard section becomes heavy or heavy, the drive motor is stopped during assembly. If the signboard part is turned by mistake during inspection or inspection, overload may be applied to the drive motor, resulting in damage to the gears of the drive motor.

(c) Purpose This invention provides that if the signboard part is turned by mistake during assembly work or inspection when the drive motor is stopped, only the signboard part on the transmission side is rotated and the drive motor is rotated. The purpose of this is to prevent overload from being applied to the drive motor by preventing it from rotating, thereby protecting the drive motor and extending its life.

(D) Structure For this purpose, the present invention has a drive motor fixed at a predetermined location, a motor-side cylindrical body fixed to the motor and having a recessed stepped cylinder part in the middle, and a display part on the front surface. a rotary side cylindrical body that is fixed to the rotary plate and has a stepped cylindrical part recessed in the middle part and notched approximately half the circumference, and whose inner diameter is slightly wider than the outer diameter of the motor side cylindrical body; After the body and the rotary side cylindrical body are fitted together so that their stepped cylindrical parts coincide with each other, a stop pin is fitted into the stepped cylindrical part to clamp and connect the two.

(E) Embodiment An embodiment of the present invention will be described below in detail based on the drawings. A front door 2 is pivotally supported on the front of the vending machine 1 so that it can be opened and closed. It is equipped with a control panel section 6 having buttons 4 and a coin slot 5, and a product sales opening 7 at the bottom. A product display room 8 for displaying product samples S is formed behind the transparent signboard 3, and a rotary display device 9 is mounted on a back wall 8A forming the display room 8 so as to be visible through the transparent signboard 3. . This rotary display device 9 will be described in detail below. First, the mounting box body 11, in which the drive motor 10 is attached to the central part of the front surface, is attached to the back wall 8A.
Attach to. Of course, the output shaft 10A of the motor 10 projects forward through an opening (not shown) in the box 11. The output shaft 10A is notched to form one plane 10B. 12
is a motor-side cylindrical body which is fixed with screws 14 through an opening 13 with the output shaft 10A fitted therein. The cylindrical body 12 has an outer diameter of 10 mm and an inner diameter of 3 mm, and a recessed stepped cylindrical portion 15 with an outer diameter of 7 mm is formed in the middle. Reference numeral 16 denotes a rotating side cylindrical body into which the motor side cylindrical body 12 fits, and has an inner diameter of 10.1 mm.
It is slightly wider than the motor side cylindrical body 12, and its outer diameter is
It is 16mm. A recessed step cylinder part 17 in which an opening 18 is formed by notching approximately half the circumference is formed in the intermediate part. Further, a square attachment portion 20 is provided at the tip of the cylindrical body 16. Reference numeral 21 denotes a label with product description characters, pictures, patterns, etc. attached, and the label 21 is pasted on the front surface of a tray-shaped rotating disk 22. Furthermore, a mounting plate 2 is provided at the center of the disc 22.
3 is provided, and is fixed to the mounting portion 20 of the rotating side cylindrical body 16 with screws 24. A stepped cylindrical portion 17 of the rotation side cylindrical body 16 fixed to the rotating disk 22 and a stepped cylindrical portion 15 of the motor side cylindrical body 12.
After fitting so that they match, both cylindrical bodies 12 are attached using an R-shaped retaining pin 19 such that the straight part of the pin 19 faces the opening 18 side of the stepped cylindrical part 17. Therefore, the pin 19 is in a state where it clamps both the cylindrical bodies 12 and 16 as shown in FIG. Further, a highly viscous substance such as grease 25 is interposed between the motor-side cylindrical body 12 and the rotation-side cylindrical body 16, so that the output of the drive motor 10 via the motor-side cylindrical body 12 is transferred to the rotating disk. 22 side with relatively no loss. However, the clamping force of the stop pin 19 is configured to be weaker than the rotational force that would damage the gear of the drive motor 10. Therefore, if an overload is applied to the drive motor 10, for example, if the rotary disk 22 is rotated by mistake during assembly or inspection of the rotary display device 9 while the drive motor 10 is stopped, Even if the rotating disk 22 and the rotating side cylindrical body 16 on the transmission side rotate, the motor side cylindrical body 12 and the motor output shaft 10A
can be prevented from rotating.

(f) Effects As described above, the present invention prevents overload from being applied to the drive motor even if the signboard side that is being rotated is accidentally turned during assembly work or inspection of a rotating display device. This allows the drive motor to be protected and has a longer lifespan, and even a small drive motor with low output can be used.

[Brief explanation of the drawing]

Fig. 1 is a front view of a vending machine using the device of the present invention, Fig. 2 is a right side view of the device of the present invention, Fig. 3 is an exploded perspective view of the device of the present invention, and Fig. 4 is a vertical front view of the stepped cylinder portions 15 and 17 of the device of the present invention. 9...rotating display device, 10...driving motor, 12...motor side cylinder, 15...stepped cylinder portion, 16...rotating side cylinder, 17...stepped cylinder portion,
18...opening, 19...stop pin, 22...rotating disc.

Claims (1)

[Scope of utility model registration request] A drive motor fixed in a predetermined place, a motor-side cylindrical body fixed to the motor and having a recessed step cylinder part in the middle part, and a rotary plate fixed to the rotary plate having a display part on the front side and having a recessed part in the middle part. A rotary side cylindrical body having a stepped cylindrical portion with a notch on approximately half the circumference and an inner diameter slightly wider than the outer diameter of the motor side cylindrical body; and a locking pin that is fitted so that the stepped cylinder parts of the two are aligned and then fitted into the stepped cylinder part to clamp and connect the two, and the clamping force of the locking pin can damage the gear of the drive motor. A rotating display device characterized in that the rotational force is set to be weaker than the rotational force of the rotating display device.