JPS6213305Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention aims to provide a switch that can maintain its current state until the movable contact is rotated by a certain angle.

The switch shown in FIGS. 1 and 2 is an example of a conventional switch, and this switch will be explained first.

A pair of fixed contacts 2 and 3 are provided on an insulating substrate 1 at a constant interval. It is located between the pair of fixed contacts 2 and 3, and by rotating, the fixed contacts 2 and 3
A movable contact 4 that selectively abuts is provided. The movable contact 4 is rotatably caulked to an extension of the fixed contact 3. Small hole 5 in substrate 1
A spring 5 is provided, one end of which is inserted into the movable contact, and the other end of which is attached to the tip of the movable contact. When this spring passes the point where the movable contact 4 is located, the fixed contact 2
Direct the movable contact 4 in the direction of sudden contact with the
When the above-mentioned certain point is exceeded, the movable contact 4 is directed in a direction in which it suddenly comes into contact with the fixed contact 3. This switch is housed in a case 6 shown in FIG. 2, and the rotating shaft 8 for rotating the movable contact 4 is also used as the rotating shaft of the volume. In the above switch, when the movable contact 4 is in contact with the fixed contact 2, if the movable contact 4 is slightly rotated, the fixed contact 2 and the fixed contact 3 are immediately disconnected.

The present invention aims to provide a switch that does not turn off until the movable contact 4 rotates through a certain angle.One embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows an embodiment of the present invention,
Components that are the same as those in FIG. 1 are designated by the same reference numerals and their explanation will be omitted. The feature of the present invention is that one fixed contact 2 is provided with an auxiliary contact 9 having spring properties. This contact 9 is biased so as to contact the movable contact 4 until the movable contact 4 rotates toward the fixed contact 3 at a certain angle. With this configuration, the fourth
As shown in Figures a, b, and c, the fixed contacts 2 and 3 remain electrically connected until the movable contact 4 moves a certain distance toward the fixed contact 3, and the switch cannot be turned off. Such a switch can be used, for example, when it is linked to a volume control, or when the switch is turned off after the resistance value has been reduced to a certain extent.

FIGS. 5 and 6 show other embodiments in which the position and shape of the auxiliary contact 9 are changed.
FIGS. 7a, b, and c are explanatory diagrams of the operation in the case of FIG. 6.

As described above, according to the present invention, the switch does not turn off until the movable contact rotates by a certain angle, and furthermore, it is only necessary to provide an auxiliary contact, so it can be easily implemented.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional switch, Fig. 2 is a plan view of a device incorporating the switch, Fig. 3 is a plan view of a switch according to an embodiment of the present invention, and Figs. 4 a, b, c. Figure 5 is an explanatory diagram of the operation of the switch.
FIG. 6 is a plan view of a switch in another embodiment, and FIGS. 7a, b, and c are explanatory views of the operation of the switch of FIG. 6. 1... Insulating board, 2, 3... Fixed contact, 4...
Movable contact, 5... Spring, 9... Auxiliary contact.

Claims (1)

[Scope of utility model registration request] A pair of fixed contacts are provided on an insulating substrate at regular intervals, and a movable contact is located between the pair of fixed contacts and selectively contacts both of the fixed contacts by rotating. One end is attached to a contact, and when the movable contact crosses a certain point in one direction, it suddenly moves toward one fixed contact, and when it crosses the above-mentioned point in the other direction, the movable contact is urged so that it moves toward the other fixed contact. A switch in which one of the fixed contacts is provided with an auxiliary contact having a spring property that is biased to contact the movable contact until the movable contact rotates a certain distance toward the other fixed contact.