JPS6246035Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a stopper device that stops a rotating body at a predetermined position after a certain rotational operation.

<Summary of the invention> The present invention is a stopper device for a rotating body, in which a protrusion is provided on the rotating body and the protrusion is brought into contact with a protrusion of an adjacent rotating body, so that the rotating bodies are sequentially rotated together, and the substrate is stopped. By bringing the rotating body adjacent to the base plate into contact with the stopper on the board, the rotation can be stopped, and after rotating the rotating body one or more times, it can be stopped at a predetermined position. It is.

<Prior Art> Conventionally, in this type of device, when stopping the rotating body at a predetermined position after rotating less than one rotation, a stopper 3 is provided on the base plate 2 that pivotally supports the rotating body 1, and the first As shown in FIG. 1A, the rotating body 1 rotates in the direction of the arrow, and then, as shown in FIG. 1B, a part of the rotating body 1 comes into contact with the stopper 3 and stops.

<Problem to be solved by the invention> However, there are cases where it is necessary to stop the rotating body at a predetermined position after it has rotated one or more revolutions. It is difficult to stop it by contacting it.

<Means for solving the problems> In order to solve the above conventional problems, the present invention
At least a first and a second rotation are coaxially disposed on a substrate so as to be able to rotate independently, a stopper is provided upright on the substrate, and a first rotation adjacent to the substrate is provided.
The rotating body is provided with a protrusion that comes into contact with the stopper, and the second rotating body adjacent to the first rotating body is provided with a protrusion that comes into contact with the protrusion.

<Embodiment> Fig. 2 is an exploded perspective view of one embodiment of the stopper device for a rotating body of the present invention, and Figs. 3 a to c are bottom views of the same when the board is omitted to explain the same operation. .

A first rotating body 11 is connected to the substrate 12 via a shaft 13.
and a second rotating body 10 are pivotally supported so that they can rotate independently, and the rotating body 11 is connected to the substrate 12.
The rotating body 10 is adjacent to the rotating body 11. Note that in this embodiment, the rotating body 10 forms part of the power transmission mechanism.

A stopper 12a protruding toward the rotating body 11 is provided on the base plate 12 around the shaft 13, and a stopper 12a protruding toward the rotating body 11 is provided on the rotating body 10 at a position farther from the shaft 13 than the stopper 12a. A pin-shaped protrusion 10a is provided upright.

Furthermore, a protruding piece 11a is formed on the rotating body 11 in a rod-like manner in a direction perpendicular to the shaft 13 and has a length sufficient to reach the protruding portion 10a. When it rotates, it can come into contact with the protrusion 10a and the stopper 12a.

Now, as shown in FIG. 3a, it is assumed that the rotating body 10 is in a state before rotating and starts rotating in the direction of arrow A. When the rotating body 10 rotates approximately one rotation, the protrusion 10a contacts the protruding piece 11a of the rotating body 11, and the third
The state shown in Figure b is reached. From this state, the rotating body 10
When further rotates in the direction of arrow A, the protruding piece 11a of the rotating body 11 is pushed by the protrusion 10a, and the rotating body 10
rotates with.

In this way, the rotating body 11 starts to rotate together with the rotating body 10 in the direction of the arrow A, as shown by the solid line in FIG. 11a comes into contact with the stopper 12a of the substrate 12, so that the rotation of the rotating body 11 is stopped, and the rotation of the rotating body 10 is also stopped. Note that if the rotating body 10 is rotated in the direction opposite to the direction of arrow A, the state shown in FIG. 3c returns to the state shown in FIG. 3a.

In this way, the rotating body 10 can be stopped after one rotation or more and less than two rotations. Therefore, the rotating body 10, which rotates at least one rotation but less than two rotations, is controlled by the position of the stopper 12a, the projection 10a,
By appropriately setting a, it is possible to stop at a predetermined position.

Further, a third rotary body is coaxially provided adjacent to the rotary body 10, and the projection of the third rotary body contacts the rotary body 10 after the third rotary body has made approximately one rotation to drive the rotation. If configured to do so, the third rotating body can be stopped at a predetermined position after two or more rotations and less than three rotations, and the number of rotations can be further increased by increasing the number of rotating bodies. The above rotating body,
It goes without saying that the shape of the stopper etc. is not limited to the above and can be changed in various ways, and can be realized in various embodiments without departing from the idea of the present invention.

<Effects of the invention> As described above, according to the stopper device for a rotating body of the present invention, by providing a protrusion on the rotating body and bringing it into contact with a protrusion of an adjacent rotating body, the rotating body can be sequentially stopped. Since the rotating body adjacent to the board is brought into contact with the stopper of the board, the rotation is stopped, so after the rotating body has rotated one or more times, it can be moved to a fixed position. It can be stopped with.

[Brief explanation of the drawing]

FIGS. 1a and 1b show principle diagrams explaining the operation of a conventional stopper device for a rotating body, FIG. 2 is an exploded perspective view of an embodiment of the stopper device for a rotating body according to the present invention, and FIG. 7c to 7c respectively show bottom views for explaining the same operation as above, with the board omitted. 10 and 11...Rotating body, 10a...Protrusion,
11a... Projection piece, 12... Board, 12a... Stopper, 13... Shaft.

Claims (1)

[Scope of utility model registration request] a substrate 12; and at least a first substrate disposed coaxially with the substrate 12 so as to be able to rotate independently of each other.
and second rotating bodies 11 and 10, a stopper 12a is provided on the substrate 12, and a stopper 12a is provided on the first rotating body 11 adjacent to the substrate 12.
a, and a second rotating body 10 adjacent to the first rotating body 12 is provided with a protrusion 10a that comes into contact with the protruding piece 11a. stopper device.