JPS626632Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a tuner unit connection mechanism for a tape recorder, and more particularly to a mechanism for ensuring electrical connection between a tape recorder and a tuner unit. In recent years, tape recorders have become popular, as they are small and lightweight, making them suitable for portability, and two-way stereo type devices are especially popular, especially for playback using headphones. It is made possible to do so. Incidentally, such headphone-only tape recorders are capable of not only simply playing back tapes, but also receiving radio broadcasts. In other words, this is the reception of radio waves,
By using a tuner unit (hereinafter referred to as a tuner pack) in which a tuner circuit section for performing tuning, detection, amplification, etc. is housed in a casing that has approximately the same shape as the tape cassette, the tuner pack can be used in place of the tape cassette in a tape recorder. This is done by attaching it to the tape cassette storage section. Specifically, the tuner pack is provided with an output terminal at a position corresponding to the playback head of the tape recorder when it is installed in the tape cassette storage section, and is used to operate the playback controls of the tape recorder. Then, the playback head moves forward and comes into contact with the output terminal of the tuner pack. When you select a desired broadcasting station by operating the tuning dial on the tuner pack, the received radio waves are detected and amplified, and then sent to the main amplifier circuit in the tape recorder via the output terminal and playback head. This system is installed and played on headphones, and radio broadcasts are received here. Additionally, this type of tape recorder is usually equipped with a tape/radio selector switch, and when the tuner pack is installed and the selector switch is set to the radio side, even if the playback operator is operated, the tape running motor will not be activated. It is designed so that it does not rotate, which helps save battery power. Incidentally, the playback head of the tape recorder is a so-called magneto-electrical converter that converts the magnetic signal of a normal magnetic tape into an electrical signal. Therefore, in order to introduce the output signal from the tuner pack into the tape recorder via the playback head, the output signal from the tuner pack is converted into a magnetic signal within the tuner pack and output from the output terminal. The signal must be converted back into an electrical signal by the playback head and supplied to the main amplifier circuit within the tape recorder. Therefore, since the electric signal detected and amplified by the tuner pack is first converted into a magnetic signal and then converted back to an electric signal by the playback head, there is a lot of loss, which leads to deterioration in sound quality and undesirable situations such as unnecessary radiation. The problem is that it is easy to occur. Therefore, in addition to solving the above-mentioned problems, for example, various tape recorder controls, the tuning dial, etc., have been organically installed in a small tape recorder cabinet and tuner pack, and playback methods have been developed when the tuner pack is in use. There is a strong demand for a product that takes various considerations in terms of manufacturing and tape recorder maintenance, such as preventing deformation due to the pinch roller being pressed against the non-rotating capstan when the operator is operated. ing. This invention has been made based on the above-mentioned circumstances, and it is an object of the present invention to provide an extremely good tuner unit connection mechanism for a tape recorder, which enables reliable electrical connection between the tape recorder and the tuner pack. The basic configuration of this invention will be explained below with reference to the drawings. FIG. 1 shows the external appearance of a tape recorder to which this invention is applied. That is, the cabinet 11 is approximately box-shaped and has a size that allows the user to easily carry it by putting it in a pocket or the like, and is made by combining a front cabinet 12 and a rear cabinet 13. On the left side of the cabinet 11 in the figure, there is a rewind
Fast-forward, playback, and stop/eject operators 14 to 17 are provided. Further, a talk operator 18 is provided above the playback operator 16 in the figure. This talk operator 18 can be operated by pressing together with the playback operator 16, and when it is operated, the built-in microphone 19 provided at the upper end of the cabinet 11 in the figure is activated, regardless of whether a tape is being played back or the radio is operating. Through this, you can hear surrounding sounds. Furthermore, when the rewind or fast forward operators 14 and 15 are operated while the playback operator 16 is operated and the tape is being played back, the tape recorder enters the review or queue state. Furthermore, rewind,
If the stop/eject operator 17 is operated while any of the fast forward and playback operators 14 to 16 has been operated in advance, the operator 14 to 16 that was operated earlier returns to its non-operating position. , when the stop/eject operator 17 is operated for the second time,
A so-called double eject mechanism is provided for ejecting a tape cassette (not shown). Here, on the left side of the cabinet 11 in the figure, in the lower part of the part where the rewind, fast forward, play and stop/eject operators 14 to 17 are arranged, there are volume adjustment operators 20 and 21. It is provided. The volume adjustment controls 20 and 21 are for the right channel and left channel of a two-way stereo, respectively, and can be slid in the directions of arrows A and B in the figure, respectively, and the volume increases as the controls are operated in the direction of arrow B. be. Further, on the upper surface of the cabinet 11 in the figure, there are a battery indicator 22, a tape type selection switch 23, a noise reduction selection switch 24, a radio indicator 25, a tape-radio selection switch 26, and a headphone jack 2.
7 are arranged respectively. Of these, the battery indicator 22 is a meter that indicates the degree of battery power consumption, and can be operated both when the tape is running and when the radio is operating. Also,
The tape type changeover switch 23 is used to change over the tape used depending on whether it is a normal tape or a chrome tape. Furthermore, a noise reduction changeover switch 24 is used to perform switching depending on whether or not the tape used has been subjected to noise reduction processing. The tape-radio selector switch 26 is used to switch depending on whether the tape is played back or the tuner pack is used for radio reception. This prevents the tape running motor from rotating, which helps conserve battery power. Therefore, by switching the tape-radio changeover switch 26 to the radio side while the tape is being played back, a so-called pause function can be performed to temporarily stop the tape running. Further, when the tape-radio changeover switch 26 is switched to the radio side, the radio indicator 25 lights up. Further, the headphone jack 27 has a headphone plug attached to the tip of a headphone cord extending from a headphone (not shown) inserted therein, and this headphone cord serves as an antenna during radio operation. Here, in the front cabinet 12 of the cabinet 11, a tape cassette storage section 28 is formed. Inside this tape cassette storage section 28,
A pair of reel stands 29, 30, a pair of cassette guide pins, a playback head, a pinch roller, a capstan, etc., which are not visible in the figure, are arranged at predetermined positions, respectively. The tape cassette storage section 28 is closed by a cassette lid 31 made of, for example, a transparent acrylic plate. In the case of a headphone-dedicated tape recorder such as the one described above, the user may suffer from hearing loss if the user listens for a long time at a high volume or high sound pressure. Therefore, as shown in FIG. 2, each volume adjustment operator 20, 21 has a red section 201, 211, for example, along the slide path in the direction in which the volume increases, that is, in the direction of arrow B in the figure. , yellow portions 202, 212, and green portions 203, 213, which are displayed in three different colors. and,
For example, when performing continuous listening for 90 minutes or more, adjust the volume adjustment controls 20, 21 to the red sections 201, 21.
Try to do it within the range of 11, that is, within the low volume range. In addition, when listening only for a time of 60 minutes to 90 minutes and 60 minutes or less, move the volume adjustment controls 20 and 21 to the yellow sections 202 and 211, respectively.
The user can easily select the volume according to the listening time by setting the sound volume below the range of the green parts 203 and 213, so that hearing loss is less likely to occur. Furthermore, this color-coded display is a measure to prevent hearing loss.
Slide-type volume adjustment control 2 as shown above
The present invention can be widely applied not only to 0.0 and 21 but also to general audio equipment using headphones having a rotary volume adjustment operator 32 as shown in FIG. 3, for example. That is, in this case, a red portion 321 and a yellow portion 322 are formed along the outer periphery of the volume adjustment operator 32.
and a color-coded display section 324 such as a green section 323, etc.
What is necessary is to form it, for example, on the panel surface of the audio equipment. Here, FIG. 4 shows the external appearance of a tuner pack used for receiving radio broadcasts with the tape recorder. That is, this tuner pack is exclusively for FM, and 33 is a casing having substantially the same shape and size as a normal tape cassette, and is formed by combining a top casing 34 and a bottom casing 35. The playback head and pinch roller are inserted into the casing 33 at a portion corresponding to the head insertion port and pinch roller insertion port of a normal tape cassette, when the tuner pack is installed in the tape cassette storage section 28 of a tape recorder. Recess for escape 3
6, 37 are formed. In addition, the recess 3
Insertion holes 38 and 39 for the cassette guide pin and capstan are formed at the upper and lower parts of the figures 6 and 37, respectively. Further, on the upper casing 34 of this casing 33, there is a reception frequency display board 40, a music selection dial 41, a monaural-stereo changeover switch 42, and an FM stereo-monaural display section 43.
are arranged respectively. This reception frequency display plate 40 is circular and has numbers indicating reception frequencies attached at appropriate frequency intervals along its outer periphery as shown in the figure. Then, the received frequency display board 40
is rotated clockwise and counterclockwise in the figure by rotating the tuning dial 41, and the receiving frequency display board 40 and the tuning dial 41
The number indicated by a substantially triangular indicator 44 attached between the two is read as the reception frequency at that time. Also, F.M.
The stereo-monaural display section 43 is, for example, an LED
It is constructed using (light-emitting diodes),
It lights up when receiving an FM stereo broadcast and turns off when receiving an FM monaural broadcast. Although the tuner pack described above was designed exclusively for FM, it can be equipped with an AM-FM switch, for example, so that it can also receive AM. Furthermore, as shown in FIG. 5a, the casing 33 is attached to the tape cassette storage section 28 on both sides of the reception frequency display plate 40, that is, on the portions corresponding to a pair of reel hubs in a normal tape cassette. A recess 4 (details of which will be described later) for escaping the reel stands 29 and 30 in the attached state.
5, 46 are formed. Also, casing 3
As shown in FIG. 5b, a plurality of (six in the illustrated case) electrode pins 47 are protruded from the bottom casing 35 at the right end in FIG. 5a of FIG. As shown in FIG. 6, an electrode receiving portion 48 is formed in a portion of the tape cassette storage portion 28 that corresponds to the electrode pin 47 of the tuner pack. When the tuner pack is mounted in the tape cassette storage section 28, the electrode pins 47 come into contact with the electrode receiving section 48, thereby establishing an electrical connection between the tuner pack and the tape recorder. In FIG. 6, 49 is a reproduction head, 50 is a capstan, and 51 is a pinch roller. Therefore, since the electrode pin 47 is provided on the bottom of the tuner pack, when the tuner pack is attached to the tape cassette storage section 28,
Due to the weight of the tuner pack and the action of a cassette holding spring (not shown), the electrode pin 47 is pressed against the electrode receiving portion 48, thereby making it possible to establish a reliable electrical connection. In addition, since the output electrical signal from the tuner pack can be directly introduced into the tape recorder via the electrode pin 47 and the electrode receiver 48, the output signal from the tuner pack can be converted into a magnetic signal for passing through the playback head as in the conventional case. There is no need for conversion, eliminating loss and improving sound quality. Next, the detailed structure of the tuner pack will be explained. That is, as shown in FIG. 7, the bottom casing 35 is provided with recesses 36 and 37 for allowing the reproducing head 49 and pinch roller 51 to escape, as well as recesses 45 and 37 for allowing the reel stands 29 and 30 to escape. 46 is formed. This recess 4
5 and 46 are openings 451 and 461 formed in the bottom casing 35;
It consists of cylindrical parts 452, 462 that protrude substantially perpendicularly toward the top casing 34 from the bottom casing 35, and the tips of the cylindrical parts 452, 462 are formed when the bottom casing 35 and the top casing 34 are combined.
It is closed by the upper surface casing 34. A printed wiring board 52 is housed inside the bottom casing 35. This printed wiring board 52 includes a tuner circuit section that performs reception, tuning, detection, amplification, etc. of radio waves. Also,
A tuning variable capacitor 53 is attached to a substantially central portion of the printed wiring board 52 with a screw 54 . And this variable capacitor 53
A bevel gear 55 is attached to the operating shaft, which is not visible in the figure, and when the bevel gear 55 is rotated in the directions of arrows C' and D in the figure, the operating shaft is rotated. The capacitance is varied to perform tuning. Further, in the vicinity of the portion of the printed wiring board 52 to which the variable capacitor 53 is attached, a support stand 56 (details of which will be described later) is provided with a screw 5.
7,57 and nuts 58,58. This support stand 56 supports the channel selection dial 4.
When the tuning dial 41 is supported by a support base 56, a gear 59 provided coaxially with the tuning dial 41 meshes with the bevel gear 55. When the tuning dial 41 is rotated, the rotational force is applied to the gear 5.
9 and the variable capacitor 5 via the bevel gear 55
The signal is transmitted to the operation axis No. 3 and synchronization is performed. Further, on both sides of the portion where the variable capacitor 53 is attached to the printed wiring board 52,
Through holes 521 and 522 are formed through which the cylindrical portions 452 and 462 of the bottom casing 35 are inserted.
Further, the upper surface of the bevel gear 55 in the drawing is a flat surface, and the receiving frequency display plate 4 is formed on the flat surface.
0 is pasted. Further, the printed wiring board 52
An LED 431 and a monaural-stereo changeover switch 42 constituting the FM stereo-monaural display board 43 are attached to the FM stereo-monaural display board 43. Here, the electrode pins 47 are supported by a holding plate 60 and housed in the bottom casing 35 along with the printed wiring board 52. Then, the electrode pin 47 is inserted through the through hole 351 formed in the bottom casing 35 and projected to the outside of the bottom casing 35. Here, FIG. 8 shows a bottom casing 35, a printed wiring board 52, a channel selection dial 41, and an electrode pin 4.
7 and the holding plate 60 are shown in a state where they are housed. That is, the printed wiring board 52 has a plurality of support pieces 352 formed on the peripheral side wall of the bottom casing 35.
It is fitted and fixed. In addition, the holding plate 60
The support pieces 353 are also fitted into and fixed to a plurality of support pieces 353 formed on the bottom casing 35. Further, a lug terminal 61 is attached to each electrode pin 47, and the lug terminal 61 and a connection pattern (not shown) on the printed wiring board 52 are connected by a lead wire (not shown). In addition, the bottom casing 3
Screw holes 354 for fixing to the upper surface casing 34 are formed in the four corners of 5. Then, as described above, when the printed wiring board 52, the channel selection dial 41, the electrode pins 47, the holding plate 60, etc. are housed in the bottom casing 35, the top casing 34 is combined and fixed with screws (not shown). do. The upper casing 34 is formed with through holes 38 and 39 through which the cassette guide pin and capstan 50 are inserted, as shown in FIG. 7 again. Windows 341 and 342 are formed for viewing, and the channel selection dial 41 and AM-FM changeover switch 4
2 is inserted through the hole 34 and can be operated from the outside.
3,344 are formed. Although the bottom casing 35 is also formed with through holes 38 and 39 through which the cassette guide pin and capstan 50 are inserted, they are not shown in FIG. 7 for simplicity. Here, decorative papers 62 and 63 are attached to the top casing 34 and bottom casing 35. Among these, the decorative paper 62 has through holes 621 and 622 formed in portions corresponding to the reception frequency display board 40 and the LED 431, and the instruction portion 44 is drawn thereon. In addition, through holes 631 and 632 are formed in the decorative paper 63 at portions corresponding to the recesses 45 and 46 of the bottom casing 35. Then, the tuner pack is completed as described above. Here, since the magnetism of the reproducing head 49 may have an adverse effect on the tuner circuit section of the printed wiring board 52, the recess 36 of the casing 33 for reproducing the reproducing head 49 may be formed of a magnetic shielding member or A magnetic shielding member may also be incorporated. Furthermore, the casing 33 includes a top casing 34 and a bottom casing 3.
When the casing 33 is combined with the casing 33, the casing 33 is completely airtight, and dust and the like do not enter into the casing 33 from the outside. Here, means for supporting the electrode pin 47 on the holding plate 60 will be explained. That is, as shown in FIG. 9, the electrode pin 47 is formed of a conductive material into a substantially cylindrical shape, and a groove 471 is formed along the outer periphery in the substantially central portion thereof. Further, a protrusion 472 is formed at the upper end of the electrode pin 47 in the figure. Then, the E-shaped ring 64 is fitted into the groove 471 of the electrode pin 47. After that, the electrode pin 47
The upper part in the figure is inserted through the through hole 601 formed in the coiled spring 65 and the retaining plate 60.
Then, the electrode pin 47 is attached to the holding plate 60 by inserting the protrusion 472 of the electrode pin 47 into the through hole 612 formed in the base 611 of the lug terminal 61 and caulking. As shown in FIG. 10, each electrode pin 47 attached to the holding plate 60 as described above is independently connected to the lug terminal 61 along with the arrows E and F in the figure.
Although it can be slid in the direction, it is normally biased by a spring 65 in the direction of arrow F in the figure.
A portion of the electrode pin 47 that is lower in the figure than the E-shaped ring 64 is inserted through the through hole 351 of the bottom casing 35 and protrudes outward. Further, the tip portion 613 of the lug terminal 61 includes:
A through hole 614 is formed, and the tip portion 613 and the connection pattern of the printed wiring board 52 are connected by a lead wire (not shown). Here, as shown in FIG. 11, the holding plate 60 has a notch 602 formed between each electrode pin 47 and extending inward from one side thereof.
The retaining plate 60 is attached to the bottom casing 35.
A substantially cylindrical protrusion 355 is integrally formed to be positioned within the notch 602 while being supported by the support piece 353 of the bottom casing 35 . This protrusion 355, as shown in FIG.
It is located between the tips 613 of each lug terminal 61, and even if the electrode pin 47 is pushed upward as shown by the dashed line in the figure against the biasing force of the spring 65, the lug terminal 61 at that position is Tip part 61
The height is set so that it is located between 3 and 3. Therefore, since the protrusion 355 is interposed between the tip portions 613 of each lug terminal 61, the lug terminal 61 rotates around its base portion 611 regardless of the height of the electrode pin 61, and the tip Section 613 is
This can prevent contact with the tip portion 613 of another adjacent lug terminal 61. Further, the protrusion 355 also serves as a guide for the lug terminal 61 to move in the vertical direction in FIG. Furthermore, since the E-shaped ring 64 is used,
Before inserting the spring 65, attach the electrode pin 47 and the lug terminal 61.
Since the assembly can be connected to the lead wire, the assembly order is not restricted, and the assembly can be carried out from the necessary parts as desired.
It is easy to manufacture. Next, the structure of the electrode receiving section 48 of the tape cassette storage section 28 will be explained. That is, as shown in FIG. 16, the tape cassette storage section 28
has a generally concave side surface, and the bottom plate 67 thereof is provided with the reel stand 30, a cassette guide pin 68 (only one of which is shown), and the like. Of these, the reel stand 30 is connected to a tape recorder mechanism (not shown) installed at the bottom of the bottom plate 67 in the drawing. Further, on one side wall of the tape cassette storage section 28, the tape cassette storage section 2 is provided.
8 is provided with a leaf spring 69 for holding the tape cassette and tuner pack in the attached state. Approximately oval through holes 671 and 672 are formed at one end of the bottom plate 67, and a plurality of through holes 671 and 672 are connected to the electrode pins 47 of the tuner pack (not shown). The electrode receiving portion 48 is screwed with a screw 71 so that the receiving electrode pins 70 (three in each case) can be seen through the through holes 671 and 672. In other words, this electrode receiving part 48
As shown in FIGS. 7a and 7b, the receiving electrode pin 70 is embedded in a support 481 made of a synthetic resin material and formed into a substantially long columnar shape. Also,
A screw member 482 having a substantially cylindrical shape and having a thread groove formed on the inner wall surface is embedded in both ends of the support body 481. Here, the receiving electrode pin 70 is formed of a conductive material into a substantially cylindrical shape, and is shown in FIG.
A substantially conical protrusion 701 is formed at the substantially central portion of the middle upper end. Further, a connection electrode 702 is provided protruding from the substantially central portion of the lower end of the receiving electrode pin 70 in the figure. Further, on the upper surface of the support body 481 in the figure, stepped portions 483 and 484 that protrude by approximately the thickness of the bottom plate 67 are formed at portions corresponding to the through holes 671 and 672 of the bottom plate 67. There is. Then, as shown in FIG. 16 again, the step portions 483 and 484 of the support body 481 are fitted into the through holes 671 and 672 of the bottom plate 67. At this time, through holes 673 and 674 are formed in the bottom plate 67 at positions corresponding to the screw members 482 embedded in the support body 481. Then, the screws 71 are inserted through the through holes 673 and 674 of the bottom plate 67, respectively.
The electrode receiving portion 48 is attached to the tape cassette storage portion 28 by being screwed onto the screw member 482. Here, approximately rod-shaped support portions 675 and 676 are implanted at predetermined positions on the lower surface of the bottom plate 67 in the drawing. Threaded holes 677, 678 are formed at the tips of the supports 675, 676. A printed wiring board 72 on which various circuit parts in the tape recorder are configured is mounted on the support parts 675 and 676.
is supported. That is, through holes 721, 722, and 723 are formed in this printed wiring board 72 at portions corresponding to the supporting portions 675, 676 and the connection electrode 702 of the receiving electrode pin 70, respectively. Then, each connection electrode 702 of the receiving electrode pin 70 is connected to each through hole 70 of the printed wiring board 72.
3 respectively, and the screws 73 are inserted into the printed wiring board 7.
The support part 67 is inserted through the through holes 721 and 722 of 2.
The printed wiring board 72 is fixed to the bottom plate 67 by being screwed into the screw holes 677, 678 of No. 5,676. Thereafter, the conductive pattern (not shown) of the printed wiring board 72 and the connection electrode 702 of the receiving electrode pin 70 are soldered. FIG. 18 shows the tape cassette housing section 28 to which the electrode receiving section 48, printed wiring board 72, etc. are attached as described above, viewed from above. The battery indicator 22, tape type selection switch 23, noise reduction selection switch 24, radio indicator 25, tape-radio selection switch 26
A headphone jack 27 and the like can be attached thereto. Therefore, the receiving electrode pin 70 is attached to the support body 481.
This support body 481 is attached to the bottom plate 67 of the tape cassette storage section 28, and then the conductive pattern on the printed wiring board 72 and the receiving electrode pin 70 are connected, so that the positioning of the receiving electrode pin 70 is This can be done accurately without shifting with respect to the electrode pins 47 of the tuner pack. That is, each receiving electrode pin 70 is embedded in the support body 481 in a pre-positioned state. Therefore, each receiving electrode pin 70 is already positioned and fixed in a state in which the support body 481 is attached to the bottom plate 67. Then, each receiving electrode pin 7
0 and the printed wiring board 72, each receiving electrode pin 70 is accurately fixed at a predetermined position without being displaced. Further, since the receiving electrode pin 70 is directly connected to the printed wiring board 72, it can contribute to downsizing of the tape recorder. In a tape recorder having the basic configuration as described above, one embodiment of this invention will be described in detail below with reference to the drawings. That is, the first
As shown in FIG. 6, the cassette lid 31 of the tape recorder can be opened and closed about its base 311 in the directions of arrows G and H in the figure. Further, a through hole 312 is formed in the cassette lid 31 at a position corresponding to the tuning dial 41 of the tuner pack when the tuner pack is attached to the tape cassette storage portion 28. A part of the channel selection dial 41 is inserted into the through hole 312, and the channel selection dial 41 is inserted into the cassette lid 3.
1 can be operated even when it is closed. Here, the tape recorder has a tuner pack presser mechanism 74 at the position shown by the dotted line in FIG.
is provided. This tuner pack holding mechanism
74 is the tape recorder storage part 2 for the tuner pack.
8, that is, when the tuner pack is placed on the bottom plate 67, the tuner pack is held down so that it does not come up from the bottom plate 67. That is, as previously explained in FIGS. 5 and 6, the tuner pack has its bottom casing 35.
Electrode pins 47 protrude from the tape cassette storage section 28, and the electrode pins 47 come into contact with the respective receiving electrode pins 70 of the electrode receiving section 48 when the tuner pack is mounted in the tape cassette storage section 28. The electrode pin 47 is urged outward from the bottom casing 35 by a spring 65. For this reason, when the tuner pack is attached to the tape cassette storage section 28, the tuner pack rises from the bottom plate 67, causing poor contact between the electrode pins 47 and the receiving electrode pins 70, making it impossible to establish a reliable electrical connection. There is this inconvenience. Therefore, the tuner pack holding mechanism 74 is required to prevent the tuner pack from floating up from the bottom plate 67 as described above and to ensure reliable electrical connection. Hereinafter, the specific structure of the tuner pack holding mechanism 74 will be explained in detail with reference to the drawings. That is, as shown in FIG. 17, the reproducing head 49 of the casing 33 and the pinch roller 5
A recess 75 for distinguishing from a normal tape cassette is formed on the side surface opposite to the side surface on which the escape recesses 36 and 37 are formed. When the tuner pack is attached to the tape cassette storage part 28, a presser member 76 having a generally U-shaped side surface is attached to the part of the tuner pack corresponding to the recess 75, as indicated by the arrow in the figure. It is provided so as to be slidable in the I and J directions. This presser member 75 is normally biased in the direction of arrow I in the figure by a spring 78 being engaged between its one part 761 and a pin 77 protruding from the lower surface of the bottom plate 67 in the figure. ing. Further, the other part 762 of the presser member 76 slides in the directions of the arrows I and J, so that the tape cassette storage section 28
It is something that is transferred in and out of. Here, when the tuner pack is attached to the tape cassette storage section 28, the other section 76 of the presser member 76
2 is inserted into the recess 75 of the casing 33, and the tuner pack is held down so that it does not rise from the bottom plate 67. In addition, tape cassette storage section 2
When a normal tape cassette is attached to the tape cassette 8, since the tape cassette does not have a recess formed in the position corresponding to the recess 75 of the casing 33, the pressing member 76 resists the biasing force of the spring 78 and moves in the direction of the arrow J in the figure. will be moved to In short, the holding member 76 holds only the tuner pack so that it does not rise from the bottom plate 67. Therefore, according to the configuration of the above embodiment, since the tuner pack is held by the holding member 76 so as not to rise from the bottom plate 67, the connection between the electrode pin 47 and the receiving electrode pin 70 is prevented. can be done reliably. Note that this invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof. Therefore, as detailed above, according to this invention, it is possible to provide an extremely good tape recorder tuner unit connection mechanism that enables reliable electrical connection between the tape recorder and the tuner pack. .

[Brief explanation of the drawing]

Fig. 1 is an external view showing the basic configuration of a tape recorder to which this invention is applied, Fig. 2 is an explanatory diagram of measures to prevent hearing loss used in the tape recorder, and Fig. 3 shows a modification of the measures to prevent hearing loss. 4 is an external view showing the tuner pack used in the same tape recorder, FIGS. 5 a and 5 b are a plan view and a side view showing the positions of the electrode pins of the same tuner pack, and FIG. 6 is a tape cassette storage section. 7 and 8 are respectively an exploded perspective view and a plan view showing the detailed structure of the same tuner pack, and FIGS. 9 and 10 respectively show the mounting means for the electrode pins. An exploded perspective view and a perspective view shown,
Figures 11 and 12 are a perspective view and a side sectional view showing the electrode pin installed in the casing, respectively, Figure 13 is a side sectional view showing the means for attaching the electrode receiver, and Figures 14a and b. are a plan view and a side sectional view showing the detailed structure of the electrode receiving part, respectively, and No. 15
The figure is a plan view showing the electrode receiving part attached to the tape recorder housing, FIG. 16 is an external view showing one embodiment of the tape recorder tuner unit connection mechanism according to this invention, and FIG. 17 is the same embodiment. FIG. 11... Cabinet, 12... Front cabinet, 13... Rear cabinet, 14... Rewind operator, 15... Fast forward operator, 16... Playback operator, 17... Stop/eject operator, 1
8...Talk operator, 19...Built-in microphone, 20, 21...Volume adjustment operator, 22...
Battery indicator, 23...Tape type selection switch, 24...Noise reduction selection switch, 25...Radio indicator, 26...
Tape-radio selection switch, 27...headphone jack, 28...tape cassette storage section,
29, 30...Reel stand, 31...Cassette lid,
32... Volume adjustment operator, 33... Casing, 34... Top casing, 35... Bottom casing, 36, 37... Recess, 38, 39... Insertion hole, 40... Receiving frequency display board, 41 ...Track selection dial, 42...Monaural-stereo selector switch, 43...FM stereo-monaural display section,
44... Indication part, 45, 46... Concave part, 47...
Electrode pin, 48... Electrode receiver, 49... Reproduction head, 50... Capstan, 51... Pinch roller, 52... Printed wiring board, 53... Variable capacitor, 54... Screw, 55... Umbrella gear, 56
...Support stand, 57...Screw, 58...Nut, 5
9... Gear, 60... Holding plate, 61... Lug terminal, 62, 63... Decorative paper, 64... E-shaped ring, 65... Spring, 67... Bottom plate, 68
...Cassette guide pin, 69...Plate spring, 70
... Receive electrode pin, 71 ... Screw, 72 ... Printed wiring board, 73 ... Screw, 74 ... Tuner pack holding mechanism, 75 ... Recess, 76 ... Holding member, 7
7...Pin, 78...Spring.

Claims (1)

[Scope of utility model registration request] In a cassette tape recorder equipped with a tape cassette storage section, a tuner circuit is installed in a casing that can be attached to the tape cassette storage section, a first connection electrode is provided at a predetermined position of the casing, and the first connection electrode is provided at another predetermined position. a tuner unit formed with a detecting section for identification with the tape cassette; a second connection electrode provided in the tape cassette storage section and in contact with the first connection electrode; The tuner unit is arranged such that when the tuner unit is installed in the storage portion, the tuner unit is configured to detect the detecting portion of the tuner unit and maintain the state in which the first connection electrode is in contact with the second connection electrode. 1. A tuner unit connection mechanism for a tape recorder, comprising a presser member for holding the tape recorder.