JPS60111358A - Tape recorder - Google Patents

Abstract

PURPOSE:To improve the operability and to suppress the unnecessary consumption of the electric power to the device itself by composing so that the device may automatically assume the pose condition without operating the switch, etc., each time when the headphone is removed from the ears. CONSTITUTION:When a sounding body 20a of a headphone 20 is inserted to the ear holes, a conductive body 23 is pushed in the arrow 24 direction and conductive pieces 21a and 21b are allowed to contact and connected to a conductive body 23. When the sounding body 20a is removed from the ears, the conductive body 23 becomes the condition in which conductive pieces 21a and 21b are separated from the conductive body 23, by the restoring force, which is the original condition, and the conductive piece 21a and conductive piece 21b are not connected. Consequently, a headphone 20 is connected through a plug 3 and a jack 74 to the device itself. However, when the pronunciation body 20a is not inserted to the ears, the conductive piece 21a and conductive piece 21b are not connected. For this reason, the voltage is not impressed to a terminal 15, the tape drive motor is not operated and the device itself becomes the pose condition.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a tape recorder whose main body can be controlled by a nunch or the like provided in a belly button.

Conventional configurations and their problems In recent years, tape recorders dedicated to headphone monitors have rapidly become popular and are often used outdoors, so there is a demand for smaller, more power-efficient tape recorders. In addition, many headphones have come into use with a sounding body inserted into the ear canal.

A conventional tape recorder will be explained below.

FIG. 1 is a block diagram of a conventional tape recorder.

In Fig. 1, 1 is the main unit, 2 is a henodophone, 3 is a plug, 4 is a jack built into the main unit 1, and headphones 2 are connected to the main unit via a plug 3 and 4 shacks.
The plug terminal 38 of the plug 3 can be freely connected to the plug terminal 38 in the connected state.

3b and 3C are jack terminals 4a of jack 4, respectively.
, 4b, and 40. Reference numeral 6 denotes a plug (hereinafter referred to as plug) provided between the plug 3 and the headphones 2.

The main body bag M, 1 and the headphones 2 will be described in detail below.

Reference numeral 6 denotes a headphone drive amplifier connected to the jack terminals 4a and 4b, which together with the shank 4 constitutes a headphone output circuit. Next, 7 to 10 are resistances, and 11.12 is N P N
l-Lanshinuk, 13)'NP) Ranjistor, 14
1 is a power supply terminal, and 16 is a terminal connected to a tape drive motor (not shown), which constitute a headphone output circuit that detects the load state on the headphone output circuit and creates a pause state. 16 is a diaphragm, 17 is a magnet, and 18 is a coil.
This constitutes a sounding body 2a.

The operation of the conventional tape recorder configured as described above will be explained below.

First, plug 3 and jack 4 are not connected, or plug 3 (!: jack 4 is connected but switch 6
A case will be described in which the main unit 1 is electrically non-conducting when the terminal is in an off state and the main unit 1 is electrically non-conductive. At this time, since the base of the transistor 110 is connected to the power supply terminal 14 only through the resistors 7 and 8, a voltage is applied between the vane and eminter of the transistor 11, and the transistor 11 is turned on. Then, the base potential of the transistor 12 flowing from the power supply terminal 14 via the resistor 9 becomes approximately the ground potential, and the transistor 12 becomes OFF state fm. The transistor 13 whose base is connected via the correct resistor 10 of the 1-run transistor 12 is also in the off state, and no current is supplied to the terminal 15 connected to the tape drive motor, and the tape drive motor is not supplied with current. The recorder enters a pause state.

Next, a case will be described in which the headphones 2 are connected to the main unit 1 via the plug 3 and the jack 4, and the switch 6 is in the on state and conductive.

At this time, the resistors 7 and 8 are the jack terminal 41a, the plug terminal 32L, the switch 6, the headphones 2. Plug terminal 3C,
If the jack terminal 40' (H) is grounded, the supply of base current to the 1' inverter 11 is cut off and the transistor 11 is turned off. Voltage is applied to 12 base and emitter songs, and 1
is in the on state.

Okay, transi y, y 13 is resistor 10 and transistor 1
2, the base current flows through terminal 16, which turns it on.
A current is supplied to drive the tape drive motor, and the main unit 1 is released from the pause state and enters the tape running state.

However, in the above-mentioned conventional configuration, the main unit 1 does not enter the pause state unless the plug 3 is pulled out from the jack 4 or the switch 6 is switched manually, resulting in poor operability, and the main unit 1 does not enter the pause state. If the sophon 2 is left unattended, the current continues to flow through the main unit 1, resulting in a disadvantage that power is wasted.

Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks, and it is possible to improve operability by automatically setting a pause state when headphones are removed from the ears without having to operate a switch or the like every time.
Furthermore, it is an object of the present invention to provide a tape recorder that can suppress wasteful power consumption in the main unit.

Structure of the Invention In order to achieve the above object, the cheap recorder of the present invention includes a headphone pause circuit that detects the disconnection state of the load of the headphone output circuit and puts the main unit in a pause state, and a headphone pause circuit that detects whether the load of the headphone output circuit is disconnected and puts the main unit in a pause state, and whether the headphone is attached to the head or not. and headphones having a detection device for detecting a state, when the headphones are worn, the detection device puts the load in a connected state and releases the paused state, and when the headphones are not worn, the detection device puts the load in a disconnected state. The device is configured such that the device enters a pause state, and thereby the pause state can be easily set depending on whether or not a belly button is worn, thereby improving operability.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of a tape recorder according to an embodiment of the present invention. In FIG. 2, the same members as in FIG. 1 are given the same reference numbers and their explanations are omitted. 19 ha.

With the coil installed inside the Dohon 200 sounding body 201L,
Plug terminal 3 & coil 19. It is electrically connected to the conductor piece 21iL. A conductor piece 21b is electrically connected to the plug terminal 3C, and is provided facing the conductor 23 together with the conductor piece 218L via an electrically insulated spring 22. When you press
When the conductor 23 and the conductor pieces 21a and 21b are in contact with each other, the conductor 3a is connected to the carp/l/19, the conductor piece 21a, and the conductor 23. It becomes electrically connected to the jack 3C via the conductor piece 21b.

The operation of this embodiment configured as described above will be mainly described below with respect to when headphones are worn and when headphones are not worn. First, when the sounding body 20 & of the headphones 20 is inserted into the ear canal, the conductor 23 is pushed in the direction of the arrow 24 and the conductor piece 21
a, , 21b contact the conductor 23 and conduct electricity, but when the sounding body 2Oai is removed from the ear, the conductor 23
The conductor piece 21 remains in its original state due to the restoring force of the spring 22.
&, 21b and the conductor 23 are separated, and the conductor piece 21a and the conductor piece 21b are not electrically connected.

Therefore, when the headphones 20 are connected to the main unit via the plug 3 and the jack 74, but the sounding body 20a is not inserted into the ear, the conductor pieces 21& and the conductor pieces 21b
This is the same as when the switch 6 is turned off in the conventional example. No voltage is applied to the terminal 16, the tape drive motor does not operate, and the main unit 1 is in a pause state. .

When the phone 2o is connected to the main unit 1 via the plug 3 and jack 4, and the sounding body 20& is inserted into the ear, the conductor piece 21a and the conductor piece 21t) are connected to the conductor 23. connected via. This is the same as when switch 6 is turned on in the conventional example, and terminal 1
6, a voltage is applied to drive the tape drive motor, and the main unit 1 is released from the pause state and performs normal playback operations.

As described above, according to this embodiment, the conductor pieces 21a and 21b and the conductor 23 have the same function as the switch 5 connected to the headphone Bose circuit that detects the load state on the headphone circuit and creates a pause state. Using the spring 22, the sounding body 208. Since the built-in headphone 20 detects whether the headphones 20 are worn or not, when the sounding body 20 & is inserted into the ear canal, the pose state of the body bag N1 is released and the sounding body 2C1 is removed from the ear canal. 9. When the main unit 1 is removed, it can be put into a pause state, and when the phone 2 is removed, it can be put into a pause state automatically and immediately without any other troublesome operations, or It is possible to release the closed state and improve the operability, and also to prevent wasteful power consumption of the main body bag @1.

Effects of the Invention As described above, according to the tape recorder of the present invention, it is possible to detect whether headphones are worn or not, and when the headphones are not worn, the main unit is automatically set to the blank state every month, and the headphone When worn, the pause state of the tape recorder is released, so it automatically and immediately turns into a disabled state without having to remove the phone from the head, or perform any other troublesome operations when it is not worn. When the henodophone is attached to the head, it automatically releases the pose state, which improves operability and prevents wasteful power consumption of the main device, which has a unique effect.

[Brief explanation of the drawing]

The figure is a configuration diagram of a tape recorder according to an embodiment of the present invention. 1... Main unit, 6... To, Nodophone drive amplifier, 7 to 10... Resistor, 11.12.
...IQ P N +- Ranjinuku, 13...
...PNPI/Ranshinuta, 14...Power terminal, 15...Terminal, 20...Head 7
I-kun. 21a, 21b... Conductor piece, 22...
No\ne, 23... Conductor. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure Knee J!

Claims (1)

[Claims] To detect a disconnection state of a load of a headphone output circuit and put the main unit in a pause state, the headphone has a Nodohon Bose circuit and a detection device for detecting a state of the headphone being attached to the head or not being attached, When headphones are worn, the detection device connects the negative Mf and releases the pause state, and when the head is not worn, the detection device disconnects the load, resulting in a bow 11 large ring. - Precoder.