CN2050213U

CN2050213U - Reception tape box

Info

Publication number: CN2050213U
Application number: CN 89212842
Authority: CN
Inventors: 陈瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-21
Filing date: 1989-03-21
Publication date: 1989-12-27

Abstract

The utility model relates to a reception table box which can solve a problem that an ordinary reproducer does not have a reception function. The utility model is characterized in that the previous functions of a radio power amplifier are made in a cavity in an ordinary tape, a magnetic head in the utility model is used as an output element, signals can be transmitted to an input magnetic head of a radio in a non-contact way, the original reproducer does not need changing, and the reception function can be completed. Meanwhile, a connecting line of a motor of a reproducer is connected with a normally closed reed switch in series, after the reception tape box is inserted in the reproducer, wherein, a permanent magnet makes the reed switch act, the motor power supply can be cut off, and the purpose of saving electricity can be achieved when the reception function of the reproducer is realized.

Description

Reception tape box

Adorn wireless magnetic tape cassette radio and tape player in the utility model relates to, exactly, relate to radio and be installed in the tape cassete, and cassette player be commercially available cassette player, when will in wireless tape cassete be housed put into this magnetic tape sound reproducer after, but just radio reception.

In the prior art, as disclosing a kind of wireless cassette player of being with among the CN85101051A, be that the radio entire circuit is installed on the bar printing wiring board, this wiring board is installed in the lid the inside of radio cassette player, radio and cassette player use audio amplifier circuit and power supply jointly, this radio cassette player makes complete machine each several part circuit simple and clear, is convenient to make and maintenance; Also have various miniature, pocket cassette players in the prior art, they exist can not the broadcast listening program defective.Do not find the technology identical in the prior art with the utility model.

The purpose of this utility model is for existing magnetic tape sound reproducer provides a kind of " radio reception box ", makes the two combine a kind of new wireless magnetic tape sound reproducer of being with.

This " radio reception box " essence is with wireless antenna bar magnet and finishes in the cavity tuning, that height is put, detection, the low radio element of function such as putting fit into common tape cassete inner box (tape does not have in the box), for saving the space, adopt the micro-type receiver integrated circuit (IC) chip, go for the non-wiring of wireless signal is passed in the power amplifier of cassette player, " playback box " adopts magnetic head as output element.When in the midband frequency scope be tuned to behind the frequency of radio station, finish that height is put, deliver in the output magnetic head after the detection, low putting and go by micro-type receiver integrated circuit etc.Because magnetic head is made up of magnetic core and coil, alternating signal just produces alternating magnetic field by coil on magnetic head.As long as " radio reception box " inserted cassette player tape storehouse, then the alternating magnetic field on its output magnetic head acts on the enter head of cassette player untouchablely.Cassette player is under the state of " playback ", the nearest level of two magnetic heads is apart between 2-4mm, the cassette player magnetic head receives behind the alternating magnetic field is finished by electronic circuit thereafter that audio frequency amplifies and power amplifier output, makes the broadcast program that can hear the radio station in the earphone of cassette player or loudspeaker.Be equipped with in " radio reception box "-button cell of 1.5v provides power supply, consider simultaneously when the broadcast listening program, the motor of cassette player can cause power consumption because of idle running, can adopt " radio reception box " to put into the tape storehouse, motor promptly is in the mode that opens circuit, concrete scheme is a dress lastblock permanent magnet in " radio reception box " A face upper left quarter, and the tongue tube of the small-sized normally closed contact of connecting in cassette player motor line.In " radio reception box " insertion cassette player tape storehouse, magnet disconnects the normally closed contact in the tongue tube that is in the magnet scope, thereby has cut off motor power in the cassette player, makes motor not work and economize on electricity.

The leading indicator of " radio reception box ":

(1) battery voltage range: 1.1v-1.5v

(2) midband frequency scope: 550KH _Z-1600KH _Z

(3) wave sensitivity is not less than in: 3mv/M

(4) the complete machine output power is not less than: 3mW

(5) the complete machine electric current is about: 1.8-2mA

The utility model has following advantage and good effect:

(1) realized the function of radio receiver of walkman, a kind of new wireless cassette player of being with is provided.

(2) radio is put in the cavity of common tape inner box, and volume is little, is easy to carry to use for you to choose.

(3) utilize magnetic head to make output element, " radio reception box " transmits signal with former cassette player untouchablely, can not change the circuit of former cassette player

(4) existing cassette player is carried out simply, is easy to change, then can utilize the power supply of the permanent magnet cut-out cassette player motor in " radio reception box ", to reach purpose of power saving.

(5) " radio reception box " made easily, and cost is low.

(6) after " radio reception box " made up with cassette player, performance separately was unaffected.

The utility model has following two accompanying drawings:

Fig. 1 cuts open and the main element skeleton view for the office of " radio reception box ".

1 is the shell of " radio reception box " among the figure, inner box for common tape cassete, magnetic head 2 is placed in the position corresponding with the cassette player playback head, flat recently between the two distance is 2-4mm, permanent magnet 3 is bonded fixing, antenna bar magnet 4 is positioned on apart from magnetic head 2 and magnet 3 at a distance as much as possible, integrated circuit 5 is the integrated circuit of radio receiver chip, battery 6 is a button cell, tuning capacity 7 is finished the selection to frequency of radio station, can mark so that determine the radio reception position in each broadcasting station on the tape inner box face thereon.Microswitch 8 is turned off power supply after " radio reception box " finishes using.

Fig. 2 is " radio reception box " and cassette player combination synoptic diagram, 9 expression cassette players among the figure, and its playback head 10 is relative with the output magnetic head of " radio reception box ", is connected on the normally closed dry reed pipe on the motor 11 in the cassette player 9, and its position is in the magnetic field range of magnet 3.

The utility model main element can adopt following specification or model:

Code name	Title	Specification and model
			2 4 5 7	The stepless bar magnet integrated circuit of radio receiver of magnetic head chip porcelain Jie trimmer	Impedance is that 200～300 Ω are close around 140～180 circle SD881 3/25P on the flat bar magnet of 5 * 50mm with φ 0.1mm sub-thread copper wire

Miniature, the personal cassette player of the suitable different size of the utility model made " the radio reception box " with its adapted.

Claims

1, one is combined in the element of this radio reception tape cassete of radio reception tape cassete of radio and tape player with magnetic tape sound reproducer and comprises antenna bar magnet 4 and integrated circuit of radio receiver chip 5, it is characterized in that: the shell of radio reception tape cassete is a tape cassete inner box 1, and the output element of radio receiver signal is a magnetic head 2.

2, the radio reception tape cassete that can be combined into radio and tape player according to claim 1 with magnetic tape sound reproducer, wireless tape inner box 1 insertion tape storehouse it is characterized in that: after will be housed, the position of magnetic head 2 is corresponding with playback head 10, and both nearest levels distances are 2-4mm.

3, the radio reception tape cassete that can be combined into radio and tape player with magnetic tape sound reproducer according to claim 1, it is characterized in that: the upper left corner of closing the 1A face at tape is fixed with a permanent magnet 3.

4, according to claim 1, the 3 described radio reception tape cassetes that can be combined into radio and tape player with magnetic tape sound reproducer, it is characterized in that: adorn a normally closed tongue tube 11 in the cassette player inside of permanent magnet 3 magnetic force scopes, this tongue tube is connected on the motor of cassette player.