CN1003892B

CN1003892B - Tape recorder equipped with radio set

Info

Publication number: CN1003892B
Application number: CN86100833.2A
Authority: CN
Inventors: 阿部喜司
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 1985-02-20
Filing date: 1986-02-20
Publication date: 1989-04-12
Also published as: CN86100833A; JPS61192097A; JPH0327997B2

Abstract

To miniaturize a tape recorder with a built-in radio by mounting at its cassette cover a pointer to indicate receiving frequencies so as to make its pointer replacable. A dial knob 5 for selecting wave stations which is equipped in a main unit 1 is handled then a pulley 14 rotates and its rotation is transmitted to a dial drum 12 through a driving string 15 to permit a capacity of a variable condenser 11 to change and then a selecting station operation is carried out. Accordingly a dial string 18 is winded by the dial drum 12 or sent out from its dial drum 12. Thus the point 24 moves together with the dial string 18 and indicates the receiving frequencies at frequency scales which are provided at a front of cassette cover 8.

Description

Wireless cassette recorder is housed

The present invention relates generally to that is equipped with a wireless cassette recorder, in this cassette recorder, a boxlike recording/displaying device and a radio system are combined together.The invention particularly relates to tuner that is used to indicate receive frequency in this sound-track engraving apparatus.

Recently, though a kind of earphone-type stero set device that is called as begins to be widely used, this acoustics makes people listen to audio reproduction on the tape by an earphone.But, because this acoustics generally is to be carried on one's body to use, so its dimensional requirement is little.One of pattern of above-mentioned this acoustics is, for example, and disclosed pattern in Japanese Utility Model 59-135594.In the acoustics of this pattern, independent tuning parts that are called tuning box replace tape to be placed in the tape drum of magnetic tape cassette, to receive radio broadcasting.This tuning part has such structure, and in this structure, radio receiver circuit is placed in the much the same casing of the profile of and magnetic tape cassette.

Have such inconvenience this by using tuning box to receive in the acoustics of radio signals, promptly tuning box must carry by employed magnetic tape cassette in cassette recorder always.Though, a kind of cassette recorder small-sized, that radio (radio system is equipped with in its inside) is housed trends towards popularizing recently, to eliminate above-mentioned inconvenience, still, it compares with the acoustics of only being made up of a cassette recorder, still has larger-size shortcoming.This is because in its radio system, needs a tuner is installed, so that be used to refer to receive frequency.

Therefore, a fundamental purpose of the present invention provides a tuner that has improved, with obtain size little, wireless cassette recorder is housed.In the tuner that this has improved, a tuning pointer that is used to indicate receive frequency is placed in movably and is used to hide the tape drum lid of placing tape.

Another object of the present invention provides a kind of tuner of above-mentioned pattern, the tuner of this pattern simple in structure, reliability height.

In order to reach above-mentioned and other purpose, provide such one wireless cassette recorder is housed according to a most preferred embodiment of the present invention, this sound-track engraving apparatus has one and is used for hiding the lid that is positioned at this sound-track engraving apparatus main body tape drum part, a tape transport mechanism, a radio reception circuit and the tuner that wireless cassette recorder is housed.Above-mentioned lid pivotally is installed on this sound-track engraving apparatus main body; Above-mentioned tape transport mechanism and radio reception circuit are installed in the main body of this sound-track engraving apparatus; Above-mentioned tuner comprises: a frequency that is placed on this sound-track engraving apparatus main body is selected knob, a tuning pointer and a gearing that is installed in movably on the above-mentioned lid.Above-mentioned frequency selects knob to be used to select required frequency; Above-mentioned tuning pointer can select knob to be moved by operating frequency, indicates receive frequency with this; Above-mentioned gearing is used for selecting the rotation of knob to pass to tuning pointer frequency.

Above-mentioned and other purpose, feature of the present invention will be from below with reference to accompanying drawing, to becoming to conspicuous in the description that most preferred embodiment of the present invention carried out.In the accompanying drawings:

Fig. 1 is one and has represented the skeleton view that wireless cassette recorder is housed according to most preferred embodiment of the present invention;

Fig. 2 is the skeleton view of sound-track engraving apparatus main part among Fig. 1, and it has represented that this sound-track engraving apparatus lid is opened the state the when deckle board on the lid is removed;

Fig. 3 is the cut-open view of sound-track engraving apparatus main part among Fig. 1;

Fig. 4 is a schematic diagram, and it has represented a driving mechanism that the tuning pointer of wireless cassette recorder is housed according to most preferred embodiment of the present invention.

Before describing the present invention, illustrate at first that in whole accompanying drawings, components identical is represented by identical reference number.

With reference to figure 1 and Fig. 2, the main body that wireless cassette recorder is housed is by reference number 1 expression.In main body 1, has tape drum 2 and a circuit (as a radio receiver circuit) and a driving mechanism that is contained in the cassette recorder of inner box that is used for placing magnetic tape cassette.Main body 1 also is equipped with a plurality of conversion and control button 3 and a volume control knob 4 and frequency selection knobs 5 that are used to select required frequency that are used to control volume in order to the motion of conversion cassette recorder.Frequency selects knob 5 to be installed in rotation on the printed circuit board (PCB) 6, as shown in Figure 4 by an axle 7.In printed circuit board (PCB) 6, be mounted with radio reception circuit or similar circuit.Lid 8 pivotally is installed on the main body 1, and can be between its make-position (as shown in Figure 1) and its open site (as shown in Figure 2), to hide the tape drum part 2 in the main body 1.A transparency window 9 is housed on the lid 8, sees through this window, can determine to be placed on other similar situation in tape surplus in the tape drum part 2 or the tape.Deckle board 10 is installed in the surface of lid 8.

In Fig. 4, a dish drum 12 that is installed on the axle 13 that variable condenser 11 on the printed circuit board (PCB) 6 and is fixedly connected on variable condenser 11 is arranged.When rotational frequency was selected knob 5, variable condenser 11 will rotate by driving rope 15.Drive rope 15 and between dish drum 12 and belt wheel 14, do transmission.Belt wheel 14 is placed in frequency and selects on the knob 5, and plays rotation with one.In Fig. 4, a volute spring 16 also is housed, its an end 16a is connected on the fixed part 17 on the lid 8, and other end 16b is connected an end of tuned rope 18.Guide pipe 19 as shown in Figure 2, is fixedly mounted on the lid 8 by several retaining elements 20,21,22 or at the like that lid 8 edge parts form.Guide pipe 19 is made up of helical element, is directed on the dish drum 12 on the axle 13 that is fixedly connected on variable condenser 11 with the other end of tuned rope 18.Guide roller 23 is installed in rotation near the edge of lid 8, is used for guiding tuned rope 18.Tuning pointer 24 is connected with tuned rope 18 regularly, it be configured in lid 8 lip-deep frequency dials 25 match with the indication receive frequency.Fig. 3 has represented some positions of tuning indicating device, all springs as previously mentioned 16, and tuned rope 18, tuning pointer 24 and like are installed on these positions.Magnetic tape cassette T has T ₁, T ₂Two parts.Magnetic head or similar elements are inserted into T ₁In.At T ₂In the part, have a pair of volume core, tape is wrapped on this volume core.T ₁And T ₂Two parts all have different separately thickness, and difference is bigger each other.The substrate 8a of lid 8 is made into the shape that the thickness with tape T adapts.Be placed in base stage 8a according to tuning indicating device described in the invention above, on the position shown in the A, this position utilizes the difference in height on it and forms on substrate 8a.

Below, will do an explanation to the course of action of tuner with present institute description scheme.

When rotation placed frequency on the main body 1 to select knob 5, belt wheel 14 just rotated thereupon, thereby by driving rope 15 rolling disc drums 12.When dish drum 12 rotates, make the electric capacity of variable condenser 11 change, thereby finish the selection of frequency.At this simultaneously, make the rotation of tuned rope 18, overcome the elastic force of spring 16 and be wrapped on the dish drum 12, or under spring 16 pullings, discharge from coiling drum by dish drum 12.The above-mentioned motion of tuned rope 18 makes and moves with its fixedly connected tuning pointer 24 thereupon, thereby indicates receive frequency with being arranged in lid 8 lip-deep frequency dials.In addition, because tuned rope 18 is mobile under the guiding of guide pipe 19, so driving force can successfully pass on the tuning pointer 24 from tuned rope 18.Settling guide pipe 19 is for the interior section of main body 1 is connected near cover shaft with indicating section on the lid.

Here need to prove, in the above-described embodiment, though tuning indicating device (as spring 16, tuned rope 18, guide roller 23, tuning pointer 24 and similar elements) can be placed in the shoulder B place of the base stage 8a of lid 8 as shown in Figure 3, but also can do such modification, it is placed in the * place, opposite of shoulder B to * or other is similarly local.

Also be noted that in the above-described embodiment, though the pipe that is made of helical element is used as guide pipe 19, with guiding tuned rope 18.But the pipe of a different structure also can be used as guide pipe 19.

Claims

1, tuner, it is used in one and is equipped with in the wireless cassette recorder, this cassette recorder has a lid (8) that pivotally is installed on its main body (1), this lid (8) is used for hiding the tape drum part (2) that is installed in said main body (1), in the main body (1) of this cassette recorder, be placed with driving mechanism and the circuit such as the radio reception circuit of this sound-track engraving apparatus, it is characterized in that said tuner comprises:

A frequency is selected turn-knob (5), and it is installed on the said main body (1), is used for selecting required frequency;

A tuning pointer (24), it is placed on the said lid (8) movably, selects knob to move it by operating said frequency, thus the indication receive frequency; With

A gearing, it is used for selecting said frequency the rotation of turn-knob to be delivered to said tuning pointer, it comprises (spring (16), a tuned rope (18) and a guide pipe (19), one end (16a) of spring (16) is connected on the lid (8), the other end (16b) is connected in frequency by tuned rope (18) and so on and selects knob, and tuned rope (18) is led by guide pipe (19) simultaneously.