JP3026605U - Tape deck - Google Patents

Abstract

(57) Abstract: A light emitting body (25) is directly attached and fixed to a wiring board (23) so that a holder does not need to be provided upright on the wiring board (23), and the wiring board (23) is processed. Assembling work and wiring are easily performed, and defective products and manufacturing costs are easily reduced. Further, the central prism (27) is locked and fixed on the deck chassis (1) at one point, so that the deck prism (1) can be easily mounted even in a place where the mounting area is small. SOLUTION: In a tape deck including a light emitting body (25) and a light receiving body (26) for detecting the beginning and end of a tape (9a), the light emitting body (25) and the light receiving body (26) are provided on a wiring board (23). At the same time, a central prism (27) for sending light from the light emitter (25) to both sides is locked and fixed on the deck chassis (1) at one point.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a tape deck incorporated in a video tape recorder or the like for recording or reproducing by mounting a video cassette, an audio cassette or a digital recording cassette.

[0002]

[Prior art]

 In the past, there was a technology in which a transparent tape was placed in series at the beginning and end of the magnetic tape, and the light from the light emitter that passed through the transparent tape was incident on the light receiver to detect the beginning and end of the magnetic tape.

[0003]

[Problems to be solved by the device]

 In the prior art, since the holder is erected on the wiring board and the light emitting body is attached to the holder and is arranged at substantially the same height as the tape, the holder protruding from the board is damaged during processing and assembly of the wiring board. In addition to being easy, there was a problem in structure and assembly work such as the need for wiring for connecting the light receiving body provided on the deck chassis to the wiring board.

[0004]

[Means for Solving the Problems]

 Therefore, in the present invention, in a tape deck including a light emitter and a light receiver for detecting the beginning and end of the tape, the light emitter and the light receiver are provided on the wiring board, and the central prism for sending the light from the light emitter to both sides is provided. It is characterized in that it is locked and fixed on the deck chassis at one point.By directly fixing the light emitter to the wiring board, it is not necessary to stand the wiring board on the wiring board, and the wiring board is processed. The simplification of the assembly work and the simplification of the wiring can be easily performed, and the occurrence of defective products and the manufacturing cost can be easily reduced. Further, since the central prism is locked and fixed on the deck chassis at one point, it can be easily mounted even in a place where the mounting area on the deck chassis is small.

Further, by guiding the light on the light receiving side by the prisms on both sides, the assembling work can be further simplified.

Furthermore, since the locking and fixing is performed by the hook body, the locking and fixing can be performed simply by fitting from the upper portion of the deck chassis, and the central prism can be mounted more easily.

[0007]

[Embodiment of device]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of the main part, FIG. 2 is a plan view of a VHS video tape recorder, FIG. 3 is a bottom view of the same, in which (1) is a rectangular deck chassis in plan view, and (2) is recording / playback. A rotatable head cylinder for mounting a head, etc., (3) and (4) stand on slide bodies (7) and (8) that slide and guide through rails (5) and (6), and VHS video cassette (9) ) A tape loading pin for winding the magnetic tape (9a) around the cylinder (2), and (10) and (11) for supplying and winding reels for supporting the tape reel of the cassette (9) as an engaging shaft. Axis, (12) is a head for inputting and outputting audio signals, (13) is an erasing head, (14) is a capstan, and (15) is a pinch roller.

Further, in the figure, (16) is a cassette holder that supports the cassette (9), and (17) and (18) are erected on the upper surface of the chassis (1) to set the cassette (9) in / out position to the recording / reproducing position. Left and right guide plates for movably attaching the cassette holder (16) to the tape guide (19) provided on the lower end of the capstan (14) to rotate the reel shafts (10) (11) and the capstan (14) A motor (20) is a loading motor that drives the tape loading lever (21) and the cassette loading gears (22) and (22). The loading motor (20) slides the loading lever (21) to cause the loading pin (21) to slide. 3) When the (4) is moved back and forth, the loading motor (20) causes the loading gear (2 2 (22) The cassette holder (16) is reciprocated by rotating the cassette holder (16) forward and backward.

Further, as shown in FIGS. 1, 4 and 5, a wiring board (23) for forming a recording / playback circuit and a motor control circuit is provided, and the board (23) is placed on the lower surface of the chassis (1). Then, the screws (24) are fixed and fixed, and the light emitting diode (25) which is a light emitting body and the phototransistors (26) and (26) which are light receiving bodies are directly fixed and fixed to the substrate (23).

Further, a central prism (27) made of a quadrangular prism acrylic resin is provided, and the central prism (27) is locked and fixed to the chassis (1) by a hook (28) provided by insert molding processing. The lower end surface of (27) is arranged so as to face the light emitting diode (25), and the left and right reflecting surfaces (29) and (30) are formed on the upper end of the central prism (27), and the reflecting surface of the central prism (27) ( 29) The light from the light emitting diode (25) is sent out to both sides via (30).

Further, both side prisms (31) and (32) made of acrylic resin are provided, and each guide plate (17) (via a hook (33) (33) integrally formed with the left and right guide plates (17) (18). 18) The prisms (31) (32) on both sides are locked and fixed on the outer side, and the lower end surfaces of the prisms (31) (32) on both sides are arranged to face the phototransistors (26) (26). The light of the light emitting diode (25) is transmitted through the inspection light (33a) (33a) (34) (34) of the cassette (9) and the transparent tape (35) (36) at the beginning and end of the cassette tape (9a). The central prism (27) sends the light to the prisms (31) (32) on both sides and makes it incident on the phototransistors (26) (26) to detect the end and the start of the tape (9a).

Further, as shown in FIG. 1, each of the reflecting surfaces (29) and (30) at the upper end of the central prism (27) is formed by intersecting in an X shape in a front view, and is formed into a vertically long oval cassette (9). ) The upper and lower widths of the reflecting surfaces (29) (30) can be easily formed to be large by facing the vertical widths of the inspection holes (34) (34) on both sides, and the right prism (32) It can also be bent into a crank shape and extended so as to bypass other parts.

[0013]

[Effect of device]

 As is apparent from the above embodiments, the present invention provides a light emitting body (25) and a light receiving body (26) in a tape deck including a light emitting body (25) and a light receiving body (26) for detecting the beginning and end of the tape (9a). Is provided on the wiring board (23), and the central prism (27) for sending the light from the light emitter (25) to both sides is locked and fixed on the deck chassis (1) at one point. By directly fixing the body (25) to the wiring board (23), it is not necessary to stand the holder on the wiring board (23), which simplifies the working and assembling work of the wiring board (23) and simplifies the wiring. It is possible to easily reduce the number of defective products and manufacturing costs. Further, since the central prism (27) is locked and fixed on the deck chassis (1) at one point, it can be easily mounted even in a place where the mounting area on the deck chassis (1) is small. it can.

Further, by guiding the light to the light receiving side by the prisms (31) and (32), it is possible to further simplify the assembling work.

Further, since the locking and fixing is performed by the hook body (28), the locking and fixing can be performed only by fitting from the upper portion of the deck chassis (1), and the central prism (27) can be attached more easily. be able to.

[Brief description of drawings]

FIG. 1 is a front explanatory view of a main part.

FIG. 2 is a plan view of a video tape recorder.

FIG. 3 is a bottom view of the same.

FIG. 4 is an explanatory plan view showing mounting of a cassette.

FIG. 5 is a front explanatory view of the same.

[Explanation of symbols]

 (1) Deck chassis (9a) Tape (25) Light emitting diode (light emitting body) (26) Phototransistor (light receiving body) (27) Central prism (28) Hook body (31) (32) Bilateral prism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Makino, 7-7 Nakagakiuchi, Daito-shi, Osaka Prefecture, 7-7 Funai Electric Co., Ltd. (72) Hiroshi Kobayashi 7-7-1, Nakagakiuchi, Daito-shi, Osaka Prefecture No. Funai Denki Co., Ltd. (72) Inventor Hiroshi Inoue 7-7-1, Nakagakinai, Daito City, Osaka Prefecture Funai Denki Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A tape deck provided with a light-emitting body and a light-receiving body for detecting the beginning and end of a tape, wherein the light-emitting body and the light-receiving body are provided on a wiring board, and a central prism for sending light from the light-emitting body to both sides is provided. A tape deck characterized by being locked and fixed on the deck chassis at one point. 2. The tape deck according to claim 1, further comprising a double-sided prism for guiding light from the central prism to a light receiving body. 3. The tape deck according to claim 1 or 2, wherein a locking piece for locking and fixing is provided on one side of the central prism, and the central prism and the deck chassis are locked and fixed. Tee characterized by being performed by a hook body
Pedeck.