JPS587463Y2 - Power attachment for small tape recorder - Google Patents

Description

[Detailed explanation of the invention] This invention is a power attachment for a small tape recorder, more specifically, when a small tape recorder is connected to an attached device and used by connecting them to an AC power source using an AC adapter. This relates to an attachment for connecting an AC adapter to a computer.

The small cassette tape recorder using micro cassette tape developed by the present applicant is convenient for carrying.
It is designed to be ultra-small enough to fit comfortably in your clothes or shirt pocket.

On the other hand, if attached devices such as a radio tuner, a remote control device, and a voice activation device are detachably connected to the device, the range of use thereof can be expanded.

Next, let's talk about an example where a radio tuner is connected to a small cassette tape recorder as an accessory device, and the recorder operates as a radio.In this case, when the radio tuner is connected to a tape recorder, The amplification circuit and speaker in the electric circuit are used, and this is connected to a radio tuner to form a radio.

As shown in FIGS. 1 and 2, the small cassette tape recorder 1 is provided with a cassette loading chamber lid 3 having a viewing window 3a for the cassette tape at the top of its top surface 1a. It can be opened and closed.

A speaker 5 is disposed at the seventh portion of the hinge 4.

On the main side 111b, there are operation buttons 1 for fast forwarding and rewinding the tape, a built-in microphone window 8, and a pause button 9. A group of operation buttons 10 for performing playback and stop operations, and an eject button 11 for opening the lid 3 and ejecting the cassette tape are provided on the left side 1d.

Further, a display member 6 for displaying the recording status and battery check is disposed near the lid 3 on the top surface 1a.

The back surface 1e of this tape recorder 1 serves as a connection surface for attached devices.

This coupling surface has a screw hole 12 into which a coupling screw for an accessory device is screwed, and a positioning groove 1 for coupling the accessory device.
3a.

13b, electrical circuit connection terminals 14a to 14g, and A
A C adapter connection jack 15 is provided respectively.

The radio tuner 2, which is detachably connected as an accessory device to the compact cassette tape recorder 1 configured as described above, has an operation switch operation button 16 on its top surface 2a, and a switch between AM and FM broadcasts. switch button 1
γ, tuning dial 19, and its indicator 20
a t 20 b and a radio operation display member 18 are respectively disposed, and a radio tuning knob 21 is disposed on the right side surface 2c.

Further, an antenna support member 23 is attached to the left side surface 2d, and a rod antenna 24 is supported by this.

As shown in FIG. 5, a coupling screw 22 protrudes from the center of the coupling surface 2b opposite to the coupling surface of the tape recorder 1, and positioning protrusions 25a are provided on the left and right sides of the coupling screw 22. t 25b, and electrical circuit connection terminals 26a to 26g are arranged below it, respectively.

The coupling screw 22 is rotatably attached through the housing of the radio tuner 2, and has a head 22a.
is located on the back surface 2e of the tuner 2.

The radio tuner 2 configured in this way has first and second
As shown in the figure, the coupling surface 2b of the tuner 2 is brought into contact with the back rlH1e of the tape recorder 1, and the protrusions 25 a t 25 b are fitted into the positioning grooves 13ay 13b, and then the coupling screw 22 is inserted. When tightened, the screw 22 will be screwed into the screw hole 12 and the radio tuner 2 will be connected to the first
As shown in the figure, it is connected to a tape recorder 1.

When these are combined, the connection terminal 26a of the tuner 2
~26g are connection terminals 14a of recorder 1, respectively.
~14g, the electric circuit of the tuner 2 is connected to the electric circuit of the recorder 1.

After they are connected in this manner, when the operation switch is turned on using the operation button 16, the power battery in the recorder 1 is connected to the electric circuit, and the circuit is activated.

Therefore, by selecting whether to receive FM broadcasts or AM broadcasts using the changeover switch button 17, turning the tuning knob 21, and receiving the desired radio waves using the dial 19, the recorder can be operated as a radio. I can do it.

The above example describes the case where a radio tuner is detachably connected as an accessory device, but the connection surface of this small tape recorder 1 also has a remote control device for the tape recorder, a remote control device for the tape recorder, an audio A starting device and the like are connected, and the connecting surface of these accessory devices is also constructed in the same manner as the connecting surface of the radio tuner 2.

By the way, when this tape recorder 1 is directly connected to an accessory device as mentioned above, the dry cell battery housed inside the recorder is used to fill the space, but it is possible to use a commercial AC power source. Indoors, etc., if you use an AC adapter and power attachment, you can use an AC power source instead of dry cell batteries.

In addition, when using the tape recorder 1 with an AC power supply, connect the output plug of the AC adapter (not shown) that has a step-down transformer and a rectifier to the tape recorder 1.
The adapter can be connected to the AC adapter connection jack 15 on the back side 1e of the computer, and the adapter can be connected to an AC power source.

However, when the accessory device is connected, as can be seen from the above explanation, the AC adapter connection jack 15 provided on the back surface 1e of the tape recorder 1 is covered by the connection surface of the accessory device. This jack 15 cannot be used, so a power attachment is provided for connecting an accessory device and using an AC power supply using an AC adapter.

This power attachment is for tape recorder 1.
It is designed to be removably connected to the back surface 1e, which is the connection surface for the attached device, using a coupling screw, and the AC adapter and the attached device are respectively connected to this combined power attachment. ing.

Also, once this power attachment is connected to the tape recorder, it is troublesome to remove it, so if you connect the attached device to it with this power attachment attached, you can operate both using the tape recorder's built-in power supply. In this state, if you connect an AC adapter to the power attachment, you can operate both using AC power. If you connect the adapter, it will work just like when you connect the AC adapter directly to the tape recorder.
The tape recorder is configured so that it can also be operated with AC power.

Therefore, this power attachment is provided with two jacks for connecting an AC adapter so that it can be used in such a convenient state.

However, when two AC adapter connection jacks are provided in this way, there is a risk of making a mistake in connecting the AC adapters to both jacks.

In this case, there is no problem if the two connected AC adapters have the same performance and the same output voltage value, but if the output voltage values are different, heat will be generated due to the voltage difference. This can cause the power attachment to overheat and burn out.

The purpose of the present invention is to eliminate such drawbacks by providing a main jack and a sub jack for connecting an AC adapter on different sides of the power attachment housing, and connecting the output lug of the AC adapter to the main jack. When connected, the power of the small tape recorder is such that even if the output plug of another AC adapter is connected to the sub jack, the main jack is activated so that the sub jack is not connected to the electrical circuit. Provides attachments.

The present invention will be explained below with reference to an illustrated embodiment.

In the embodiment shown in Fig. 3.4.5, the power attachment to which the present invention is applied is coupled to a small cassette tape recorder, and a radio tuner as an accessory device is coupled to this, and both constitute a radio. AC the radio
When operating on AC power using an adapter, the tape recorder 1 and radio tuner 2 are
This is similar to that shown in FIGS. 1-2 above.

Therefore, the explanation of its structure and operation will be omitted, and the same members will be given the same reference numerals.

In Figures 3.4 and 5, power attachment 3-0
A part of the rotation knob 31a of the coupling screw 31 is exposed at the center of the upper surface 30a of the housing 30A.

As shown in FIG. radio tuner 2
The structure is similar to that of the bonding surface 2b.

That is, a coupling screw 31 protrudes from the center of the coupling surface 30b, and positioning protrusions 32a, 32 are provided on the left and right sides of the coupling screw 31.
Further below, there is a terminal 33 for connecting an electric circuit.
a to 33g and a plug 34 are provided, respectively.

The coupling screw 31 is rotatably disposed within the housing 30A, and its tip protrudes from the center of the coupling surface 30b, and is rotated by the rotation knob 31a.

Further, the back surface 30e of the power attachment 30 opposite to the coupling surface 30b serves as a coupling surface for an attached device, and as shown in FIG. It is configured.

That is, this coupling surface has a screw hole 35 into which a coupling screw of an accessory device is screwed, and a positioning groove 36a for coupling the accessory device.

36b, electrical circuit connection terminals 37a to 37g, and A
A main jack 38 for connecting a C adapter is provided.

Further, on the right side surface 30c of the power attachment 30, as shown in FIG. 5, a sub-jack 39 for connecting an AC adapter is provided.

Therefore, there are two jacks 38 for connecting the AC adapter.
39 are arranged on different sides of the housing 30A of the power attachment 30, that is, the main jack 38 is arranged on the back surface 30e of the power attachment 30, and the sub jack 39 is arranged on the right side i 30 c of the power attachment 30.

Both jacks 38 and 39 are connected within the attachment housing 30A as follows.

That is, as shown in FIG. 6, the fixed conductive terminal 38a of the main jack 38 and the fixed conductive terminal 39a of the auxiliary jack 39 are connected in common and connected to one fixed conductive terminal 34a of the output lug 34. .

Normally closed movable contact piece 38 b t of the main jack 38
38c, one contact piece 38c is connected to the other fixed conductive terminal 34b of the plug 34, and the other contact piece 38c is connected to the other fixed conductive terminal 34b of the plug 34.
b is a normally closed movable contact piece 39 b y of the sub jack 39
39c is connected to one of the contact pieces 39c.

Further, the other contact piece 39b is connected to a terminal 33 for connecting an electric circuit.
g, and the one contact piece 39c is connected to the electrical circuit connection terminal 37g.

Note that the connection terminals 33a to 33f are in contact with the electric circuit connection terminals 14a to 14f (see FIG. 4) on the coupling surface of the tape recorder 1, and the electric circuits are in contact with the electric circuit connection terminals of the attached device, respectively. Connection terminal 37a~
37f are connected to each other within the □ body 30A.

As described above, the power attachment 30 to which the present invention is applied is configured.

As shown in FIGS. 3 and 4, the power attachment 30 configured in this manner has its coupling surface 30b facing the back surface 1e of the tape recorder 1, and its projection 32a.
, 32b into the positioning grooves 13a, 13b and tighten the connecting screw 31, the screw 31 is screwed into the screw hole 12 and the power attachment 30 is attached to the tape recorder 1 as shown in FIG. is combined against.

Next, as shown in FIGS. 4 and 5, the coupling surface 2b of the tuner 2 is attached to the back surface 30e of the power attachment 30.
are brought into contact with each other, and its protrusion 25a.

25b into the positioning groove 36at36b and tighten the connecting screw 22, the screw 22 is screwed into the screw hole 35 and the radio tuner 2 is connected to the power attachment 30 as shown in FIG. are combined.

When these are combined, the connection terminal 26a of the tuner 2
~26g contact power attachment 3-00 connection terminals 3γa~37g, respectively.

When this contacts, the electric circuit of the tuner 2 is connected to the electric circuit of the tape recorder 1 because the connection terminals 33a to 33g of the power attachment 30 are connected to the connection terminals 14a to 14g of the tape recorder 1.

Therefore, in this coupled state, if the operation switch is turned on using the operation button 16, the tape recorder 1 can be operated as a radio using the built-in power supply of the tape recorder 1.

In addition, when using a commercial AC power source in this state, as shown in Figs. The output plug 40 may be connected, and the adapter may be connected to an AC power source.

When the AC adapter is connected to the sub jack 39 in this way, the electric circuit inside the tape recorder 1 is connected to the fixed conductive terminal 39a and the movable contact piece 39, as shown in FIG.
The fixed conductive terminals 34a and 3 of the output lug 34 are
4b, a voltage exchanged to direct current is supplied by an AC adapter.

At this time, a contact piece 39c is connected to the terminal 34b through contact pieces 38b and 38c.

In addition, for the electric circuit in the radio tuner 2, a voltage is converted into direct current by the AC adapter through the fixed conductive terminal 38a and the connecting terminal 37g of the main jack 38 by the fixed conductive terminal 39a and the movable contact piece 39c. is supplied.

Therefore, the radio can be operated using AC power.

Further, when the radio tuner 2 is removed from the power attachment 30 and the power attachment 30 is connected to the tape recorder 1, the main jack 38 is used when an AC power source is used.

That is, when the output lug of the AC adapter is connected to the main jack 38, the fixed conductive terminals 34a and 34b of the output lug 34 are connected through the fixed conductive terminal 38a and the movable contact piece 38c.
The voltage exchanged from the voltage to the DC voltage is supplied to the electric circuit within the tape recorder 1.

Therefore, the tape recorder 1 can be operated using AC power.

Also, at this time, even if another AC adapter is connected to the sub jack 39, since the AC adapter is connected to the main jack 38, the movable contact piece 38 of the same jack
b and 38c are separated, the movable contact piece 39c of the sub jack 39 is connected to the fixed conductive terminal 34b of the output lug 34.
Do not touch.

Therefore, when the main jack 38 is in operation, the power supply circuit via the auxiliary jack 39 is in an open state, so the above-mentioned disadvantages caused by providing two AC adapters are eliminated.

As described above, according to the present invention, it is possible to provide a power attachment for a compact tape recorder that is extremely practical.

[Brief explanation of drawings]

Fig. 1 is a front view of a radio configured by combining a radio tuner with an ultra-small cassette tape recorder, and Fig. 2 is a perspective view showing the tape recorder and radio tuner shown in Fig. 1 separated. , Fig. 3 is a front view of a radio configured by connecting a radio tuner to an ultra-small cassette tape recorder via the power attachment to which the present invention is applied, and Fig. 4 is a front view of the chief recorder shown in Fig. 3 above. FIG. 5 is a perspective view showing the power attachment and radio tuner separated, and FIG. 5 is a perspective view showing the coupling surfaces of the power attachment and radio tuner shown in FIGS. FIG. 1 is an electrical circuit diagram of a power attachment showing an embodiment of the present invention. 30... Power attachment, 30A... Housing,
30e... Side, 30e... Back, 38... Main jack, 39... Sub jack.

Claims (1)

[Claims for Utility Model Registration] Connecting attached devices to a small tape recorder (-1) When these devices are connected to an AC power source using an AC adapter, they can be detachably connected to the small tape recorder, It is formed of a first casing surface for coupling with the small tape recorder in the power attachment to which the adapter is connected, and another casing surface other than the first body surface,
A second casing surface that is coupled to the above-mentioned accessory device; a main jack for connecting the AC adapter disposed on the second casing surface; and a main jack for connecting the AC adapter disposed on the casing surface other than the first and second absolute surfaces. and a sub-jack for connecting the AC adapter, which is electrically connected to the main jack and whose power supply circuit is in an open state when the AC adapter is connected to the main jack. A power attachment for a small tape recorder that is characterized by: