JPS584410B2 - selection switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a selection switch that can select a plurality of modes each consisting of a plurality of code combinations, and is designed to easily change the code and designate the setting of the code. It is useful for use as a video changeover switch for televisions, etc.

Embodiments of the present invention will be described below with reference to the drawings.

In the drawing, L1 is a light source, P1 to P5 are light receiving elements for sensing light from the light source L1, P1 corresponds to the light guide hole H1 of the cartridge, which will be described later, and is responsible for opening/closing detection by the operation of button a1, and P2 to P5 are light receiving elements for sensing light from the light source L1. is also the light guide hole H2~
Corresponding to H, mode detection is performed by a combination of H2 to H5.

The cylinder a1 has a plurality of light guiding holes H1 to H, a knob portion a1 for insertion/extraction and rotational operation, and a recessed portion a1 for rotational click described later.

The light guiding holes H1 to H are arranged in several blocks on the outer periphery of a1, with several of them forming one block.

The light guiding hole blocks B1, B2, .

That is, for example, block B1 has H1, H2, H3, H4
, H5, block B2 is H1, H2, H5 block Bn
are perforated like H1H,,H,.

Further, these light guiding hole blocks are held in a position facing the light receiving element when the cylinder is rotated by a rotary click mechanism to be described later to switch the mode.

a2 is a button that is built into the cylinder a1 and can be operated in the axial direction, and has a hood a2' for opening and closing the light guiding hole H1 bored in the cylinder a1.

A3 is a spring that presses the button a2 upward against the cylinder a1.

The cylinders a1, button a2, and spring a3 are integrally formed as a cartridge.

L2 is a light source that illuminates the button a2 for displaying the status, and is configured to light up when the button a2 is pressed.

b1 is a guide part for the cartridge and light receiving elements P1 to P,
It is a main body with a holding part.

b2 is a holding part for L2, b3 is a steel ball, and together with a leaf spring b4 attached to the main body b1 and a recess a1' in the cylinder a1, a rotary click for positioning the centers of the light guiding holes H1 to H and the light receiving elements P1 to P5. It constitutes a mechanism.

In the above configuration, when the cartridge corresponds to the cartridge body b1 as shown in FIG. 2, the cylinder a1 is rotated by the knob a', and the blocks B1 to Bn
One of them is positioned on both sides of the light receiving elements P1 to P5.

In this case, the light receiving elements P2 to P5 detect which of the light guide holes H2 to H is located, and this is supplied to a determination circuit (not shown), which then outputs, for example, selection switching and mode switching signals. can get.

At this point, other modes can be preset by holding the knob a1' of the card cartridge and rotating it to switch the blocks of light guide holes.

Then, by pressing the knob a1, the hood a2' closes the light guiding hole H1 so that no light passes through the light receiving element P1.

Therefore, with the output of the light receiving element P1, the light receiving elements P2 to P
By reading the output of 5, the reading timing can be set.

Now, if the cartridge is removed from the cartridge body b1 and a card cartridge having a plurality of different blocks is inserted into the cartridge body b1, signals corresponding to the blocks can be obtained from the light receiving elements P2 to P.

According to the embodiments described above, it is easy to obtain a desired selection signal using a code, and it is also easy to convert the code, and it is also easy to command the start of reading the code or specify the code setting by operating the button a2.

Furthermore, if a plurality of card cartridges having different codes are prepared, code signals corresponding to many modes can be obtained with one cartridge body, which is highly practical for code selection.

Therefore, if the present invention is used as an image changeover switch, not only can an arbitrary image be selected by rotating the cartridge, but also the start pulse can be generated by pressing the push button after a certain period of time after the selection. The selection result can be validated, so check the image on a monitor TV etc. before starting.
This has the advantage that the two operations of enabling image transmission can be performed reliably with a single selection switch.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a selection switch according to an embodiment of the present invention, FIG. 2 is a side sectional view of the main part thereof, and FIG. 3 is a perspective view of the main part. L1...Light source, P1-P5...Light receiving element, H1-H,...Light guide hole, a1...Button, b1...Body , b3... Confucian ball, b
4...Plate spring.

Claims (1)

[Claims] 1. a replaceable cylindrical cartridge; a cartridge body having a cylindrical inner wall into which the cartridge is inserted from above and rotatable about the axis of the cylinder;
A light source provided on the inner surface of the cartridge and at the center of the cartridge body; a plurality of photoelectric elements arranged vertically at one location on the inner wall; On the optical path between the light source and the alternating current element, a plurality of blocks of light guide holes are provided in combinations of light guide holes, the number of which is equal to or less than the number of the light receiving elements, corresponding to a desired code, and above the cartridge. and a hood interlocked with the button that connects at least one light guide hole between the photoelectric element and the light source by pressing the button downward; A set of cords is taken out from the photoelectric element by facing one block of the light guide holes, and a start pulse is generated by pressing the button, and the cartridge is rotated to combine the light guide holes of another block. A selection switch characterized in that a mode consisting of a combination of other codes can be selected by switching to a mode consisting of a combination of other codes.