JPS643275Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headphone device suitable for use in audio equipment.

In general, the noise surrounding the headphone device user varies depending on the time and place, so when the user wants to adjust the volume of the headphone device, the headphone device is placed at a predetermined distance via an input cord. I had to go to the location where the audio equipment was installed or reach out and operate the volume control knob on the audio equipment to adjust the volume of the headphone device. Furthermore, for example, when you put a portable type of audio equipment in your bag or pocket and enjoy music etc. through a headphone device, you have to reach out to the volume adjustment means on the audio equipment itself and manually adjust the volume. The volume adjustment operation was one of the troublesome operations for the user. Furthermore, if you notice that someone is talking to you while listening to music etc. using a headphone device, you should immediately remove the headphone each time, or leave the headphone on and use it. The user must go to the installation location of the audio equipment placed at a predetermined distance via the input cord and operate the muting switch of the muting circuit of the audio equipment, which is troublesome for the user. There was also the inconvenience of not being able to respond immediately.

In view of this, the present invention provides a headphone device that allows volume adjustment to be performed with simple operations.

An embodiment of the headphone device of the present invention will be described below with reference to FIGS. 1 and 2.

In this Figure 1 and Figure 2, 1R and 1L
indicate the right headphone unit and the left headphone unit, respectively. One end of the voice coil 2R of the right headphone unit 1R is connected to the right audio signal input terminal 4a of the plug ₄ via a variable resistor R1 that adjusts the volume of the right input signal, and the other end of the voice coil 2R is connected to the right audio signal input terminal 4a of the plug 4. Common terminal 4 of plug 4
Connect to b. Also, the left headphone unit 1
One end of the L voice coil 2L is connected to the left audio signal input terminal 4c of the plug 4 via a variable resistor _R2 that adjusts the volume of the left input signal, and the other end of this voice coil 2L is connected to the common terminal of the plug 4. Connect to 4b. 3R is the right input code, and 3L is the left input code. In addition, in FIGS. 1 and 2, 5 indicates the right input code 3R and the left input code 3.
This branch part 5 is shown from the plug 4.
Up to right input code 3R and left input code 3
L are guided in parallel, branched off at this branch 5, and guided to the right headphone unit 1R and the left headphone unit 1L, respectively.

In this embodiment, a volume variable means 6 which also serves as a muting switch is provided at a predetermined position between the branch portion 5 and the plug 4 (approximately at the branch portion in this example). As this volume variable means 6, a variable resistor _R1 is used.
An adjustment knob 6a is provided for rotationally adjusting the resistance values of R2 and _R2 . Furthermore, one end of the voice coil 2R is connected to the other end of the voice coil 2R via a resistor 6R with a relatively low resistance value (for example, 0.5Ω) and a connection switch 7R constituting a muting switch. One end is connected to the other end of the voice coil 2L via a resistor 6L with a relatively low resistance value (for example, 0.5Ω) and a connection switch 7L constituting a muting switch, and the adjustment knob 6a of the volume variable means 6 is connected to the other end of the voice coil 2L. By rotating the variable resistors R ₁ and R 2 in a predetermined direction, the resistance values of the variable resistors R 1 and R ₂ are linked to change to a predetermined value, and the adjustment knob 6
When pressing a, connection switches 7R and 7L
are turned on in conjunction with each other.

When the plug 4 of the headphone device of this embodiment is connected to the headphone connection terminal 8 of an audio device (in this case, a portable magnetic reproducing device) as shown in FIG. 3, the right audio signal input terminal 4a of the plug 4,
The common terminal 4b and the left audio signal input terminal 4c are
The right audio signal output terminal 8a, the common terminal 8b and the left audio signal output terminal 8 of the headphone connection terminal 8, respectively.
connected to c. In this FIG. 3, 9R and 9L are a right side reproduction magnetic head and a left side reproduction magnetic head, respectively, and 10R and 10L are a right side amplifier and a left side amplifier, respectively.

In this example, in a steady state when the adjustment knob 6a is not pressed, that is, the connection switches 7R and 7L constituting the muting switch are in a disconnected state, the voice coil 2R of the right headphone unit 1R is connected to the right amplifier. 10R
The right audio signal is supplied at a predetermined level from the right headphone unit 1R, and the right audio signal is normally generated from the right headphone unit 1R.
The left voice coil 2L is supplied with a left audio signal at a predetermined level from the left amplifier 10L, and the left headphone unit 1L normally generates the left audio, so the user of the headphone device can enjoy music, etc. can.

Also, when you want to change the volume of the headphone device, pinch and turn the adjustment knob 6a, and the resistance values of variable resistors _R1 and _R2 will change with the rotation, and the level of the left and right audio will gradually change. Since the volume changes, you can change the volume by performing adjustment operations until you reach the desired volume.

Furthermore, when the adjustment knob 6a is pressed and the connection switches 7R and 7L are in the connected state, the resistor 6R has a relatively low resistance value (for example, 0.5Ω), so the power is supplied from the right amplifier 10R. Most of the right audio signal flows through this resistor 6R, and the voice coil 2R (impedance is 32Ω, for example) of the right headphone unit 1R.
There is almost no sound flowing through the right headphone unit 1R, and almost no right sound is generated from this right headphone unit 1R. Similarly, since the resistor 6L has a relatively low resistance value (for example, 0.5Ω), most of the left audio signal supplied from the left amplifier 10L is transmitted through this resistor 6L.
Flows through the voice coil 2L of the left headphone unit 1L (impedance is 32Ω, for example).
Almost no left sound is generated from this left headphone unit 1L. In this manner, when the connection switches 7R and 7L are in the connected state by pressing the adjustment knob 6a, muting is performed.

As described above, according to this embodiment, the volume variable means 6, which also serves as a muting switch, is provided at a predetermined position between the branch part 5 of the right input cord 3R and the left input cord 3L and the plug 4. Therefore, the user can easily adjust the volume in response to changes in the noise level around the headphone device user, which has the benefit of allowing the user to instantly enjoy music, etc. at an appropriate volume. be.

Moreover, muting of the audio equipment can be performed simply by pressing the adjustment knob 6a to connect the connection switches 7R and 7L.

Therefore, the user can not only adjust the volume at the appropriate time while listening to music using such a headphone device, but also easily and immediately adjust the volume when he or she notices that someone is talking to him or her. You can perform mutating operations and respond immediately while keeping your headphone on. In addition, when checking the telephone ring, checking for guests, etc., you can easily and instantly do it without having to remove the headphone or operate the muting switch of the muting circuit installed in the audio equipment. You can perform muting operations and check immediately with the headphone on.

Furthermore, according to this example, the right input code 3R
Also, since the volume variable means 6 which also serves as a muting switch is provided at a predetermined position between the branch part 5 of the left input cord 3L and the plug 4, it is compared with those provided in other parts such as the ear cup. Since it is located on the chest, it is particularly easy to operate, and there is no need to run any wires, so it has the advantage of being easy to configure.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations may be adopted without departing from the gist of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the headphone device of the present invention, Fig. 2 is a connection diagram showing an embodiment of the invention, and Fig. 3 is a configuration diagram showing an example of audio equipment using the headphone device. be. 1R is the right headphone unit, 1L is the left headphone unit, 2R and 2L are voice coils, 3R is the right input cord, 3L is the left input cord, 4 is the plug, 4a is the right audio signal input terminal, 4b is the common terminal. , 4c is a left audio signal input terminal, 5 is a branch section, R ₁ and R ₂ are variable resistors, respectively.
Reference numeral 6 indicates a volume variable means which also serves as a muting switch, 6a is an adjustment knob thereof, 6R and 6L are resistors, respectively, and 7R and 7L are connection switches, respectively.

Claims (1)

[Scope of utility model registration request] One end has a plug for connecting an electronic device, and the other end is pressed between the branch point of the input cord, which is connected to the left and right headphone units, and the plug. An input signal volume variable means is provided for muting the input signals of the left and right headphone units and adjusting the volumes of the left and right headphone units in conjunction with each other by operating the operating section to adjust the volume. A headphone device characterized by: