JP2508571B2 - Cassette type tape player - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette type tape player having a lid body which is rotatable and can be opened and closed with respect to a housing body provided with a drive portion of the tape player.

[0002]

2. Description of the Related Art Conventionally, a small-sized tape player has been used in which a tape cassette in which a stereo sound signal is recorded is used as a recording medium and a stereo reproduction is heard by headphones.

This small-sized tape player is provided in such a size that it can be easily carried with one hand, and further downsized to a size that can be stored in a pocket.

A small-sized tape player of this type is constructed such that a drive unit of the tape player is housed in a housing body and the tape cassette is mounted on a flat surface of the housing body having a large area. The tape cassette mounted on the flat surface of the housing body is configured to be covered by a lid body that is pivotally attached to the housing body and is openably and closably attached. That is, in the tape player, the housing body and the lid that covers the flat surface side of the housing body constitute a space for housing the tape cassette.

[0005]

By the way, as described above, the lid body of the tape player configured to form the space for housing the tape cassette by the housing body and the lid body that covers the flat surface side of the housing body is as follows. In order to load and unload the tape cassette, the tape cassette is repeatedly opened and closed.

Further, the lid body formed to have a size sufficient to cover the flat surface side of the tape cassette is formed in a rectangular flat plate shape corresponding to the flat shape of the tape cassette.
In such a lid body which is simply formed in a rectangular flat plate shape, sufficient mechanical strength cannot be guaranteed, and there is a possibility that the lid body may be easily deformed by repeated opening and closing operations. is there. If the lid body is deformed, it becomes impossible to accurately position and mount the tape cassette on the drive unit formed on the housing body side, and it becomes impossible to realize stable running of the magnetic tape. If the stable running of the magnetic tape cannot be achieved, the reproduction characteristics are deteriorated, and good tape reproduction cannot be performed.

Therefore, according to the present invention, it is possible to mount the tape cassette by ensuring the mechanical strength of the lid that covers the tape cassette mounted on the housing body and accurately positioning it with respect to the housing body to mount the tape cassette. The tape running can be realized, and at least a part of the mounted tape cassette can be seen from the outside even when the tape cassette is mounted by being covered with the lid body. The present invention has been proposed for the purpose of providing a tape player capable of confirming the state of a magnetic tape wound and running.

[0008]

In order to achieve the above-mentioned object, a cassette type tape player according to the present invention is provided with a housing body provided with a drive portion of the tape player, and a rotary body with respect to the housing body. And a lid body that can be opened and closed so as to accommodate the tape cassette together with the housing body. The lid body has a panel plate having a see-through window, a frame body having a notch hole, and a plurality of electric holes. It is configured by a three-layer laminated structure of a printed circuit board on which components are mounted, and the state of the accommodated tape cassette is configured to be visible from the outside through the see-through window, cutout hole and through hole. .

[0009]

In the cassette type tape player according to the present invention, the lid body has a three-layered laminated structure including the panel board, the frame body and the printed circuit board, whereby the mechanical strength is enhanced.
Moreover, it is made thinner. In addition, a part of the tape cassette housed between the housing body and the lid is visually inspected through the transparent window provided on the panel constituting the lid, the notch hole provided on the frame and the through hole provided on the printed circuit board. Then, the state of the tape cassette such as the running state of the magnetic tape is confirmed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the present invention is applied to a tape player with a built-in radio receiver will be described below. A tape player with a built-in radio receiver to which the present invention is applied has a width of 110 when the tape cassette shown in FIG.
The height is 70 mm and the depth (thickness) is 22 mm.

The tape player is provided with a housing body 1 which constitutes a tape player portion, and a cassette lid 2 which is a lid body attached to the housing body 1 so as to be rotatable and openable and closable. .

The housing body 1 is, as shown in FIG. 3, a main housing 3 formed by punching and bending a metal plate.
And a sub-housing 4 formed by punching and bending the same metal plate that can be slid in and out of the main housing 3. This sub-housing 4
4 is pulled out from the main housing 3 so that
As shown in FIG. 3, the tape cassette mounting portion 5 is formed on the flat surface side of the housing body 1. This tape cassette mounting part 5
Is formed so as to have a planar shape of a size sufficient for mounting the standard size tape cassette C, that is, a size substantially corresponding to the planar shape of the tape cassette C.

In this tape player, when the sub housing 4 is pulled out from the main housing 3,
The height is about 82 mm. A tape player in which a tape cassette mounting portion 5 that allows mounting of a standard-sized tape cassette C in a state where the sub housing 4 is pulled out from the main housing 3 is configured on the flat side of the housing body 1. Is the actual development Sho 59-14106
Since the applicant of the present application has been proposed in this publication, its detailed description is omitted.

On the side of the main housing 3 which constitutes the housing body 1 of this tape player, a drive unit such as a tape running drive mechanism, a mode selection switching mechanism, etc., an audio amplifier (headphone amplifier), and a power source necessary for constructing the tape player. Parts and the like are provided. That is, the main housing 3 is provided with a pair of reel drive shafts 8, 8 that engage with a pair of reel hubs around which the magnetic tape of the tape cassette C is wound. These reel drive shafts 8,
8 is arranged so as to protrude from the bottom plate 7 of the tape cassette mounting portion 5 so that the tip end side portion with which the reel hub engages protrudes into the tape cassette mounting portion 5, and is disposed in the main housing 3. The reel drive motor selectively drives the reel drive motor according to each operation mode such as a reproduction mode, a fast-forward mode or a rewind mode.

Further, one side of the main housing 3 is made to project into the tape cassette mounting portion 5 and holds a magnetic tape in cooperation with a pinch roller (not shown), and the magnetic tape is run at a constant speed. A capstan shaft 6 that constitutes a tape running mechanism is provided. The capstan shaft 6 is rotationally driven by a capstan drive motor provided in the main housing 3.

On the front side of the main housing 3,
A head accommodating portion 10 in which a reproducing magnetic head that slides in contact with a magnetic tape and reproduces an audio signal recorded on the magnetic tape is accommodated, and a battery accommodating portion in which a dry battery serving as a driving power source is retractably stored. 11 is the main housing 3
Are provided along the longitudinal direction of. The magnetic head accommodated in the head accommodating portion 10 is brought into a state of sliding contact with a magnetic tape which projects and travels in the tape cassette mounting portion 5 in the reproducing operation mode. In addition, a headphone jack 12 into which a connection plug for headphones or earphones is inserted and connected is provided at an end of the head housing section 10.

Furthermore, on the outer surface on one side of the main housing 3, there are a reproduction mode selection button 13 and a stop button 1.
4. A fast-forward mode selection button 15 and a rewind mode selection button 16 are arranged in parallel. Further, a volume volume operation knob 17 is rotatably provided at a corner portion on the bottom of one side of the main housing 3. Further, in the main housing 3, a switching operation knob 18 for switching between the tape player section and the radio receiver section and a noise reduction switching operation knob 20 are arranged in parallel.

On the other hand, in the sub housing 4 slidably provided with respect to the main housing 3, the cassette lid 2 which is a lid for accommodating the tape cassette C mounted in the tape cassette mounting portion 5 together with the main housing 3 is provided. Are rotatably attached via a hinge mechanism 25. The cassette lid 2 includes a lid frame 21 and a front panel 26. The lid frame body 21 includes a front plate 22a and side walls 2 provided on both sides of the front plate 22a so as to be planted.
2b and 22c and a back wall 22d provided so as to stand on the back side of the front plate 22a are integrally formed of synthetic resin.

That is, the cassette lid 2 is formed in a substantially flat plate shape which is large enough to cover the flat surface of the tape cassette C and close the tape cassette mounting portion 5.

A front panel 26 made of a transparent or translucent synthetic resin plate is joined and arranged on the surface of the front plate 22a of the lid frame 21. This front panel 2
6, a tape remaining amount display window 27 formed as a see-through window through which the tape remaining amount of the tape cassette C mounted in the tape cassette mounting portion 5 can be seen through from the outside is provided at a substantially central portion. As shown in FIG. 2, the tape remaining amount display window 27 allows the magnetic tape wound around the pair of tape reels of the tape cassette C mounted in the tape cassette mounting portion 5 to be seen through. It is formed in a size large enough to allow a part of the reel to be seen through at the same time.

On the side of the remaining tape display window 27, a reception frequency scale of the radio receiver section is formed by printing. The reception frequency scale in this embodiment is A
It is composed of an M frequency scale section 28, an FM frequency scale section 29, and a three-band frequency scale section of a television broadcast channel scale section 30.

Further, on the surface of the front plate 22a, band switching display windows 31, 32, 33 are provided corresponding to the scale parts 28, 29, 30 and the scale parts 28, 29, 30 are also provided. A dial pointer display window 34 is provided along the line.

It should be noted that, except for the portion where the tape remaining amount display window 27, the dial pointer display window 34, and the band switching display windows 31, 32, 33 of the front panel 22 are provided, the other portions are printed with an opaque paint inside. It is designed so that you cannot see through.

Front panel 22 constructed as described above
Is a ridge portion 3 provided on the outer periphery of the surface of the cassette lid 22.
The peripheral edge is positioned by 5 and is bonded to the lid frame body 21 with an adhesive.

Further, the remaining tape amount display window 2 of the lid frame 21
As shown in FIG. 1, a cutout hole 36 is formed in a portion corresponding to 7 so that the inside can be seen through. Further, the portion corresponding to the dial pointer display window 34 is also cut out as a long hole 37, and the band switching display windows 31, 32, 33 are further provided.
The portion corresponding to is also formed as a notched hole 73.

On the inner surface of the cassette lid 2, as shown in FIG.
Also, as shown in FIG. 5, an electronic circuit component 40 such as an IC circuit component that configures a radio receiver unit including a tutor unit for AM and FM, an intermediate frequency amplifier circuit, a detection circuit, an FM stereo demodulation circuit, and the like is provided. A mounted printed circuit board 41 is provided. This printed circuit board 4
An antenna mounting cutout hole 4 for accommodating a bar antenna 42 for receiving an AM wave is provided in a substantially central portion of the antenna 1.
3 are drilled. Notch hole 43 for mounting this antenna
A pair of antenna holders 44 and 45 made of nylon or the like are attached to the surfaces facing each other in the longitudinal direction. The antenna holders 44 and 45 are attached to the printed circuit board 41 by sandwiching and supporting the respective ends of the bar antenna 42, and by sandwiching a part of the printed circuit board 41 by the integral sandwiching pieces 47 and 48.

As described above, the bar antenna 42 has a notch 43 for mounting an antenna, which is formed in the printed circuit board 41.
Since it is mounted so as to be housed inside, the space corresponding to the thickness of the electric circuit board 41 can be utilized to dispose on the inner side surface side of the cassette lid 2, thus saving space. it can.

In the printed circuit board 41, the lid frame 21 is connected to the antenna mounting notch 43.
Through hole 83 corresponding to the notch hole 36 opened in
Has been established.

As described above, in the printed circuit board 41 to which the bar antenna 42 is attached, the engaging holes 52 are engaged with the positioning projections 51 formed by standing up a part of the cassette lid 2 and the inner surface side of the cassette lid 2 is described. By being attached to
The mounting position is positioned. As shown in FIGS. 5 and 6, the printed circuit board 41 has a surface on which electronic circuit components are not mounted, which is bonded to the back surface side of the front plate 22a of the lid frame body 21 by an adhesive member such as a double-sided adhesive tape. Is attached to the cassette lid 2.

The portion of the front plate 22a of the lid frame 21 where the bar antenna 42 is located is the tape remaining amount display window 2.
A cutout portion 56 that is continuous with the cutout portion 36 corresponding to 7 is provided so as to ensure a storage space for the bar antenna 42.

As described above, the front panel 2 is attached to the lid frame 21.
As shown in FIGS. 1 and 6, the cassette lid 2 configured by joining 6 and joining the printed circuit board 41 to the inner surface side of the lid frame body 21 has a thin plate-like front panel 26, The lid frame 21 and the printed circuit board 41 have a three-layer structure. The front panel 26 having this three-layer structure,
The lid frame body 21 and the printed circuit board 41 are provided with a tape remaining amount display window 27, a cutout hole 36, and a through hole 83 so as to communicate with each other.
7, the magnetic tape wound around the pair of tape reels of the tape cassette C mounted in the tape cassette mounting portion 5 through the notch hole 36 and the through hole 83 is seen through, and the state of the tape cassette C is visually observed from the outside. It is possible.

A cover plate 76 is attached to the inner side surface of the lid frame 21 so as to cover the printed circuit board 41. The cover plate 76 is formed in a thin plate shape, and a notch window portion 84 is opened at a substantially central portion corresponding to the through hole 83 of the printed circuit board 41. The cutout window portion 84 is formed to have a size so as to face a portion of the tape cassette C mounted in the tape cassette mounting portion 5 across a pair of tape reels. It is formed to have a size substantially corresponding to the quantity display window 27.

The radio receiving circuit component 40 formed on the printed circuit board 41 attached to the cassette lid 2
Is connected to a power supply circuit and an audio amplifier (headphone amplifier) (not shown) shared with the tape player portion formed in the housing body 1 by the flexible printed wiring boards 54 and 55 arranged across the hinge mechanism 25. It is connected.

Further, on the inner surface side of one side wall 22b of the lid frame 21, a tuching mechanism 57 is arranged.
The tuning mechanism 57 is a slide type volume 56 that varies the voltage of the varicap that varies the tuning capacitance.
And the pulleys 58, 59, 60 and a tuning knob 63 projecting to the front side through a through hole 64 formed in the cassette lid 2. The lever 62 of the volume 56 and the pulley 5
The tuning resistor 63 is rotatably operated by laying the dial thread 62 over the 8, 59, 60 and the tuning knob 63, and the variable resistor of the volume 56 is variably operated to perform the tuning operation. It is designed to be played.

In the middle of the dial thread 62,
A dial pointer 63a is attached. The dial pointer 63a moves so as to face the dial pointer display window 34, and displays the predetermined frequency scale of each dial scale portion 28, 29, 30 as a pointer.

Between the cassette lid 2 and the printed circuit board 41, a switch changeover operation lever 66 which constitutes a switch changeover mechanism for changing over the band changeover switch 65 attached to the printed circuit board 41 is arranged. There is. The switch switching operation lever 66 is formed of a synthetic resin as a thin plate-shaped elongated body, has a concave engaging portion 68 at one end, and has band switching display windows 31, 32, 33 at a wide portion on the other end side. A display mark 69 that faces is printed. Further, as shown in FIG. 7, an operation knob 72 for slidingly operating the switching operation lever 66 is provided at a substantially central portion of the switch switching operation lever 66.

In the switch changeover operation lever 66 thus constructed, the engaging portion 68 is connected to the band changeover switch 65.
Is disposed in a sliding groove 73 formed by notching a part of the lid frame body 21 by engaging with the operator 67 of the above, and the operating knob 72 is projected from an elongated hole 74 formed in the cassette lid 2, It is movable within the range of the sliding groove 73 and is arranged between the front panel 26 of the cassette lid 2 and the printed circuit board 41. At this time, the display mark 69 provided on the other end side of the switch switching operation lever 66 indicates that the band switching display windows 31, 32,
It is located at a position corresponding to any one of 33.

Then, the switch switching operation lever 6
6 performs a switching operation of the band switching switch 65 by gripping the operation knob 72 and sliding operation, and in response to this movement, the display mark 69 corresponds to a predetermined band band switching display window 31, 32 and 33, the selected band is displayed.

[0039]

As described above, in the cassette type tape player according to the present invention, the lid body for accommodating the tape cassette together with the housing body has a three-layer laminated structure of the panel board, the frame body and the printed circuit board. A sufficient mechanical strength is guaranteed, and deformation can be prevented even when repeated opening and closing operations are performed. Therefore, the tape cassette can be accurately positioned and mounted to the drive section housed in the housing body, stable tape running of the magnetic tape can be realized, and good reproduction characteristics can be guaranteed. Becomes Moreover, the panel body, the frame body, and the printed circuit board have a three-layer laminated structure, so that the lid body can be made thin.

Further, a transparent window is provided in the panel plate constituting the lid body, a cutout hole is provided in the frame body, a transparent window is further provided in the printed circuit board, and a tape cassette housed between the housing body and the lid body is provided. Part of it is not visible, and you can check the status of the tape cassette such as the running state of the magnetic tape, so you can check the remaining amount of tape, etc., and you can easily judge the replacement of the tape cassette, etc. It is possible to improve the sex.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a tape player with a radio receiver to which the present invention is applied.

FIG. 2 is a perspective view of a tape player with a radio receiver when the tape cassette is not loaded.

FIG. 3 is a perspective view of a tape player with a radio receiver in a state in which a tape cassette is loaded.

FIG. 4 is a perspective view of a tape player with a radio receiver with a cassette lid opened.

FIG. 5 is a perspective view showing a state in which a printed circuit board is attached to a cassette lid.

FIG. 6 is a cross-sectional view of a cassette lid that constitutes a tape player with a radio receiver.

FIG. 7 is a perspective view showing a switch switching operation lever which constitutes the tape player.

[Explanation of symbols]

 1 Housing Main Body 2 Cassette Lid 21 Lid Frame 26 Front Panel 27 Tape Remaining Amount Display Window 36 Notch Holes Provided in Lid Frame 41 Printed Circuit Board 83 Through Holes Provided in Printed Circuit Board

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-56-83801 (JP, A) JP-A-59-52993 (JP, A) JP-A-60-44292 (JP, A) Actual development Sho-55- 101101 (JP, U)

Claims (1)

(57) [Claims] 1. A housing main body provided with a drive portion of a tape player, and a lid body that is pivotably attached to the housing main body so as to be openable and closable, and that can accommodate a tape cassette together with the housing main body. The lid is composed of a three-layer laminated structure of a printed circuit board having a panel plate having a see-through window, a frame having a cutout hole, and a plurality of electric components having a through hole, and the tape accommodated therein. The state of the cassette is the above-mentioned see-through window, notch
A cassette type tape player that is visible from the outside through a hole and a through hole .