JPH0244618A - Selective opening/closing switch assembly - Google Patents

Abstract

PURPOSE:To selectively open or close a pair of switches by rock of a control lever so as to enable driving in the forward direction and driving in the reverse direction and to miniaturize it by so providing the press control parts of the said control lever as to face a pair of switches, respectively. CONSTITUTION:Though a control lever 8 is normally in non-operating horizontal balanced condition, it rocks freely with the end of a central fulcrum 8c as a fulcrum within the range of angle until the flanges 8d and 8e of the lever 8 and the rear margins of openings of upper covers abut on each other, and by the two press control parts 8a and 8d each corresponding switch 1 or 1' can be opened or closed selectively. Hereby, even if the lever 8 is inclined to press the switch, once the hand is released, the switch returns to the former condition by a spring and also the lever 8 returns to the non-operating horizontal balanced condition. Accordingly, it can also be driven in the reverse direction by inclining the lever 8 rightward so as to press the switch 1' to top it and further pressing a play function button, after inclining the lever leftward so as to press the switch 1 to drive a stereo, etc., in the forward direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a selective opening/closing switch particularly suitable for use in headphone stereos and the like.

2. Description of the Related Art A conventional switch of this type is called a lock switch and has a structure as shown in FIG. That is, the bar-shaped metal contacts (9) (10) (11) are attached to the substrate (12) placed in the frame (14).
12) The contact (10) is attached so as to protrude from the top surface.
It is higher than the other two contact points (9) and (11),
A movable contact (13) is attached to the upper part of the movable contact (13) so as to be able to rotate around the movable contact (13).
It is possible to contact with. In addition, the frame (14
) is fixed to the knob fulcrum (18), and the knob fulcrum (18) is fixed to the knob fulcrum (18).
The switch knob (1) can be tilted using this as a fulcrum.
7) is installed. Also, switch knob (17)
A protrusion (17a) is integrally formed on the back side of the protrusion (17a), and a ball Ol biased by a spring (15) is attached to the tip of the protrusion (17a). (
With the switch knob (17) pressed against the top surface of
) can move on the movable contact to the contact (9) side and the contact (11) side. For example, when the switch knob (17) is switched to the dotted line part, it moves in the direction of the arrow,
By tilting the movable contact (13), the contact (
9) and contact (10).
1).

Problems to be Solved by the Invention However, with this structure, the switch is locked in some conductive state and can only switch between two states. When used as a switch, it is possible to switch between driving the headphone stereo in the forward direction and stopping it, but there is a problem in that it is not possible to switch the headphone stereo to drive the stereo in the reverse direction in addition to these switchings.

Furthermore, since it is necessary to provide two independent fulcrums: the fulcrum of the contact (13) at the contact (10) and the fulcrum (18) of the switch knob (17), there is a limit to how thin the switch can be made. However, there was a problem in that it was difficult to miniaturize the switch, making it unsuitable as a switch to be installed in the middle of a headphone cord to drive a headphone stereo.

Therefore, the present invention provides a device that can be attached to the middle of a headphone cord to drive a headphone stereo, and can drive the stereo in the forward direction and in the reverse direction by sequentially pressing the same switch. It is an object of the present invention to provide a miniaturized selective opening/closing switch assembly.

Means for Solving the Problems In order to achieve the above object, the present invention arranges a pair of switches having spring contacts that are opened and closed by pressing operation on one substrate at intervals, and A central fulcrum is present in the middle of the switch, and pressing operation parts are formed at both ends of an operating lever that can swing around the central fulcrum, and each of the pressing operation parts faces the pair of switches, The selective opening/closing switch assembly is characterized in that the pair of switches are selectively opened and closed by swinging the operating lever.

Regarding the central fulcrum of the operating lever, the central fulcrum may be formed to protrude from the operating lever, and its tip may be in contact with the substrate, so that the lever can make two movements around this tip. Alternatively, the control lever may be configured such that it is supported by the tip of a protrusion formed on the board at a central fulcrum, and can be swung around this fulcrum. The lever may be configured to swing around this axis.

Function As mentioned above, since the operating lever is made to be able to swing freely within at least a certain angle range, even if you tilt the operating lever and press the switch, once you release your hand from the lever, the built-in spring will activate the switch. With the return to its original state, this lever also returns to its original non-actuated equilibrium state and the switch is no longer locked in the depressed position.

Therefore, when the selective open/close switch assembly according to the present invention is applied to a headphone stereo, after tilting the control lever to one side and pressing one of the two switches to drive the stereo in the forward direction, By performing the same operation again, the stereo can be driven in reverse, and by tilting the control lever to the other side and pressing the other switch, the stereo can be stopped.

Furthermore, the thickness of the selective opening/closing switch can be made thinner, making it possible to make it more compact, and it can be effectively used as a selective opening/closing switch attached to the middle of a headphone cord.

Embodiment Hereinafter, a case where an embodiment of the selection open/close switch assembly according to the present invention is applied to a headphone stereo will be described with reference to the drawings.

As shown in Figure 1, the upper case with an opening in the center (
6) and the lower case (7), a board (2) equipped with a printed circuit is arranged, and on this board (2), a pair of spring contacts that are opened and closed by pressing are placed. Install the switches (1) (1') at a distance from each other. In addition, a central fulcrum (8c) is formed at the center of the back surface of the operating lever (8), which has a substantially balance beam shape, and projects from the back surface, and two push operation parts are provided on both sides of the central fulcrum (8c) on the back surface. (8a) Form (8b).

The operating lever (8) can be used in combination, with the -left side (left side in the figure) of the central fulcrum (8C) serving as a play function button and the other side (right side in the figure) serving as a stop button.

In addition, the tip of the central fulcrum (8C) of the operating lever (8) is placed between the pair of switches (1) (1') on the board (2), and the push operating portion (8a) of the lever (8) (8b) to the surface of the corresponding switch (1) (1'), and at the same time the top surface of the operation lever (8) is connected to the upper case (6).
Flanges (8d) (8e) are formed at the lower part of the outer surface of the lever (8) to prevent the lever (8) from falling out of the case (6). to be contained within.

The operating lever (8) is normally in a non-operating horizontal equilibrium state, but uses the tip of the central fulcrum (8c) as a fulcrum, and connects the flange (8d) (8e) of the lever (8) and the back side of the opening of the upper cover. The switches (1) (1') can freely swing within the angular range until they come into contact with the edge, and can be selectively adapted to each other by the two push operation parts (8a) (8b).
can be opened and closed.

Also, (3) (3') is the resistance, and (4) (4')
is a capacitor, and (5) is a volume, which constitute a circuit for driving a headphone stereo.

The central fulcrum of the operating lever is constructed by forming a protruding part between a pair of switches on the board, supporting the central fulcrum of the operating lever at the tip of this protruding part, and ensuring that the lever does not extend beyond this protruding part. The operation/lever may be pivoted on a shaft fixed in the horizontal direction at a central fulcrum, and the control/lever may be pivoted around this shaft. You may also do so.

With this configuration, the operating lever (8) can swing freely within a certain angle range, so even if you tilt the lever (8) and press the switch, once you release your hand from the lever (8),
The built-in spring returns the switch to its original state, and the lever (8) also returns to its non-actuated horizontal equilibrium, so that the switch is no longer locked in the depressed position.

Therefore, tilt the operating lever (8) to the left (i.e. press the play function button), drive the stereo forward by pressing the switch (1), and tilt the lever (8) to the right (i.e. press the stop button). press) switch (1
´) to stop the stereo, and by pressing the play function button again.
You can drive the stereo in the opposite direction.

Further, in the present invention, the play function button and the stop button cannot be pressed at the same time.

Effects of the Invention As described above, according to the present invention, the operating lever can be moved within a certain angle range, and a switch having a pair of spring contacts is selectively pressed. To provide a selection opening/closing switch assembly capable of switching not only forward driving and stopping of the stereo but also driving the stereo in the reverse direction when the selective opening/closing switch assembly is applied to a headphone stereo. Can be done.

Further, it is possible to prevent switching such as driving and stopping the stereo at the same time, and furthermore, the thickness of the selection opening/closing switch assembly can be reduced and the size can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional lock-type selective opening/closing switch, and FIG. 2 is a sectional view showing one embodiment of a selective opening/closing switch assembly according to the present invention. (1) (1') ・・・・・・・・・(2) ・・・
・・・・・・・・・・・・(8) ・・・・・・・・・
・・・・・・(8a)(8b) ・・・・・・(
8c) ・・・・・・・・・・・・Central fulcrum of switch board operating lever press operation part with spring contact

Claims (1)

[Claims] (1) A pair of switches each having a spring contact that opens and closes when pressed is arranged at a distance on a single board, has a central fulcrum between the pair of switches, and swings around the central fulcrum. A push operation portion is formed at both ends of a movable operating lever, and each of the push operation portions faces the pair of switches, and the pair of switches are selectively opened and closed by swinging of the operation lever. A selection opening/closing switch assembly characterized in that: