JPH0359836A - Tape recorder - Google Patents

Abstract

PURPOSE:To contrive miniaturization and thin formation of the subject device by providing a metal substrate on which electronic parts are mounted and its wiring pattern is formed on the other surface and a mode changeover position detecting mechanism having a contact disposed on a mode changeover rotary body and a mode detecting wiring pattern formed on the other surface of the metal substrate. CONSTITUTION:A main chassis 11 is provided on the other surface with the wiring pattern 51 for forming a function of a recording and reproducing mechanism 21, a tape driving mechanism 31 and a mode changeover mechanism 41 and the electric parts 52 connected to the wiring pattern 51. Then, a contact plate 62 having a contact spring 64 constituting the mode changeover position detecting mechanism 61 is disposed coaxially with a mode cam gear 42, while the mode detecting wiring pattern 65 for making contact with the contacts (a) and (b) of the contact spring 62 is formed on the main chassis 11 which is a metal core substrate, thus reducing drastically the space for setting up the mode changeover position detecting mechanism 61. By this method, the miniaturization and thin formation of the device can be contrived.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a tape recorder device.

(Prior Art) In a tape recorder device such as a VTR (video tape recorder) or a DAT (digital audio tape) deck, when a tape cassette is loaded into the device body, the tape is removed from the cassette body. The tape is pulled out by rollers and wound around a rotating head drum, and in this state the tape is run and information is recorded and reproduced on the tape using χ:I.

Therefore, in a tape recorder device, 5TOP
, I? There are various tape modes such as EC, PLAY, Fr', and REV, and these modes are controlled mechanically and electrically (logic) by detecting the switching position.

Mode switching detection mechanisms in such tape recorder devices include the following.

FIG. 4 is a perspective view illustrating the side of a mode switching detector in a conventional tape recorder device.

In the figure, 1 indicates a mode cam gear. The mode cam gear 1 is connected to a rotation gear 5 of a motor 4 via an intermediate gear 2.3, and is rotated by the drive of the motor 4.

Camun i for mode cam gear 1? The operating protrusion 6a of the mode switching slider 6 is engaged with the cam M1al.

Further, a mode detection gear 7 is meshed with the mode cam gear 1, and when the mode detection gear 7 is rotated by the rotation of the mode cam gear 1, the rotation is detected by a detection switch and the mode position is detected.

In this tape recorder device, when the motor 4 is driven by a predetermined mode switching operation, the mode cam gear 1
is rotated and the mode switching slider 6 is moved. As a result, the tape pull-out mechanism and tape drive mechanism modes (not shown) are switched. Further, the mode detection gear 7 is rotated by the rotation of the mode cam gear 1, and the rotation is detected by the detection switch to detect the mode switching position.

As a result, the rotation of the motor 4 described above is controlled, and mode switching and control of the electrical system (not shown) are performed.

Incidentally, in recent years, there has been a demand for the above-mentioned tape recorder device to be smaller and thinner.

However, in the conventional tape recorder device described above, in order to achieve high functionality of the device, it is necessary to provide a mode switching detection mechanism on the chassis consisting of a mode detection gear and a detection switch to accurately detect the mode state of the device. However, there is a problem in that it is difficult to make the device smaller and thinner.

Therefore, there are the following.

FIG. 5 is a side sectional view showing a mode switching detection mechanism in another conventional tape recorder device.

In this figure, parts common to those in FIG. 4 are given the same numerals, and redundant explanations will be omitted.

As shown in FIG. 5, the mode cam gear 1 is rotatably disposed on the chassis 8 and fixed to a rotating shaft 8a. A contact spring 9 is disposed on the surface of the mode cam gear 1 on the chassis 8 side. Furthermore, a wiring pattern 8b for mode detection is formed on the surface of the chassis 8 that the contact spring 9 comes into contact with, and an electrical component 10 is connected to the wiring pattern 8b.

However, in this case, although the mechanism can be made smaller (space-saving), the mechanism is placed on the same surface as the chassis on which the tape recorder mechanism is mounted, so there are restrictions on mounting parts. Also, since the wiring pattern, cam gear, and slider are arranged on the same side of the chassis,
There is a problem with getting thicker.

(Problems to be Solved by the Invention) As described above, in the conventional tape recorder device, there is a problem that it is difficult to make the device smaller and thinner without reducing the functionality of the device.

The present invention is intended to solve the above-mentioned conventional problems,
It is an object of the present invention to provide a tape recorder device that has a simple configuration and can be made smaller and thinner without reducing the functionality of the device.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a recording and reproducing mechanism that records and reproduces information on and from a tape, a tape drive mechanism that drives the tape,
a mode switching mechanism for controlling a mode switching rotary body for switching modes of operation of the recording and reproducing mechanism and the operation of the tape drive mechanism; each mechanism is mounted on one surface; electronic components are mounted; and a wiring pattern thereof; a mode switching position detection mechanism comprising: a metal substrate formed on the other surface; a contact disposed on the mode switching rotary body; and a mode detection wiring pattern formed on the other surface of the metal substrate; It is equipped with the following.

(Function) In the present invention, the mode switching position detection mechanism is constituted by a contact provided on the mode switching body and a temporarily formed mode detection wiring pattern, so the structure is simple. However, the device can be made smaller and thinner without reducing the functionality of the device.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a side sectional view showing a tape recorder device according to an embodiment of the present invention, FIG. 2 is a plan view of the embodiment, and FIG.
FIG.

First, the overall outline will be explained using FIG. 2.

In the figure, 11 indicates a main chassis of a metal core board. On one side of the main chassis 11, a recording/reproducing mechanism 21, a tape drive mechanism 31, and a mode switching mechanism 41 are arranged. Further, on the other side of the main chassis 11, there are provided a wiring nozzle 51 that forms the functions of the recording/reproducing mechanism 21, tape drive mechanism 31, and mode switching mechanism 41 described above, and an electrical component 52 connected to the wiring pattern 51. It is being In addition, the main chassis 11
Between the mode switching mechanism 41 and the wiring pattern 51,
A mode switching position detection mechanism 61 is provided.

The above-described recording/reproducing mechanism 21 includes a rotating drum 22 on which a recording head, a reproducing head, and an erasing head for recording and reproducing information on a tape are disposed.

The tape drive mechanism 31 includes tape pull-out members 32a and 32b that pull and guide the tape from the cassette body toward the rotating drums 2, 2, a capstan shaft 33 for driving the tape, and a capstan shaft 33 that presses the tape against the capstan shaft 33. A pinch roller 34 that drives the cassette hub, and a pair of tape reels 35a and 35b that drive the hub of the cassette.

The mode switching mechanism 41 includes a mode cam gear 4 rotated by a motor (not shown) via an intermediate gear (not shown).
2, and a mode slider 45 which has an operating protrusion 44 engaged with a cam 43 formed on the mode cam gear 42 and changes the mode of the tape drive mechanism 31 by 9J by rotation of the mode cam gear 42.

Next, details of the mode switching position detection mechanism 61 will be explained using FIG. 1 and FIG. 3.

As mentioned above, on one side of the main chassis 11,
A mode cam gear 42 constituting the mode switching mechanism 41 is arranged to be rotatable at the same time. Shaft 46 of mode cam gear 42
A plate-shaped contact plate 62 is coaxially fixed to the main chassis 11 via the main chassis 11, and the contact plate 62 and the mode cam gear 42 are aligned with each other by a dowel pin 63. A contact spring 64 having a contact aSb is disposed on the main chassis 11 side of the contact plate 62. Further, a wiring pattern 65 for mode detection is formed on the rotation orbit of each contact point a, b of the contact spring 64 of the main chassis 11.

Therefore, a predetermined mode switching operation is performed,
When the mode cam gear 42 is rotated by the drive of a motor (not shown), the mode switching position is detected by contact between the contacts a and b of the contact spring 64 of the contact plate 62 and the wiring pattern 65 for mode detection. As a result, the recording/reproducing mechanism 21, the tape drive mechanism 31, and the mode switching device?
The operation of g41 is controlled.

In the embodiment described above, the contact plate 62 that covers the contact spring 64 constituting the mode switching position detection mechanism 61 is disposed coaxially with the mode cam gear 42, and the contacts a and b of the contact spring 64 are arranged coaxially with the mode cam gear 42. Since the contacting mode detection wiring pattern 65 is formed on the main chassis 11, which is a metal core mounting board, the installation space for the mode switching position detection mechanism can be significantly reduced, thereby making the device more compact and The thickness can be reduced.

[Effects of the Invention] As explained above, in the tape recorder device of the present invention,
The mode switching position detection mechanism is composed of a contact placed on the mode switching rotor and a mode detection wiring pattern formed on the board, so it has a simple structure while reducing the need for high functionality of the device. It is possible to reduce the size and thickness of the device without increasing the size of the device.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a tape recorder device according to an embodiment of the present invention, FIG. 2 is a plan view of the embodiment, and FIG.
The perspective view, FIG. 4, and FIG. 5 are a perspective view and a side sectional view showing a mode detection mechanism in a conventional tape recorder device. 11... Main chassis, 21... Recording and reproducing mechanism,
31... Tape drive mechanism, 41... Mode switching mechanism, 42... Mode cam gear, 45... Mode slider, 51... Wiring pattern, 52... Electrical component, 6
DESCRIPTION OF SYMBOLS 1... Moto switching position detection mechanism, 62... Contact plate, 64... Contact spring, 65... Wiring pattern for mode detection.

Claims (1)

[Scope of Claims] A recording and reproducing mechanism that records and reproduces information on a tape, a tape drive mechanism that runs the tape, and a mode switch that switches modes of operation of the recording and reproducing mechanism and operation of the tape drive mechanism. a mode switching mechanism having a rotating body; a metal substrate on which each of the mechanisms is mounted on one surface and on which electronic components are mounted and a wiring pattern thereof is formed on the other surface; and a metal substrate disposed on the mode switching rotating body. What is claimed is: 1. A tape recorder device comprising: a mode switching position detection mechanism having a contactor formed on the metal substrate and a mode detection wiring pattern formed on the other surface of the metal substrate.