JPH058732U - Tape deck - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] The review arm 7 is provided with a review guide post 71 movably in an operating position or a non-operating position where the tape 68 is separated from the capstan 14, and the post 71 is mounted.
0 is rotatably supported on the chassis 1 by a substantially vertical support shaft 69, and the review arm 70 is brought into contact with the downward slope 72 of the operation lever 60 for switching the operation of the tape 68. When the review guide post 71 is supported at the position where 68 is released, the review arm 70 is pressed downward by the downward slope of the operation lever 60, so that the review arm 70 is prevented from moving up and down and the review guide post 71 is moved to a predetermined height. Can support. [Effect] It is possible to easily improve workability such as processing and assembling and reduce manufacturing cost.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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 that provided a review guide post that separates the tape from the capstan and rewound the tape to play it.

[0003]

[Problems to be solved by the device]

 In the above-mentioned prior art, as a structure for supporting the review guide post at a predetermined height, there is a structure in which the review arm on which the post is mounted is pulled from the rear surface of the chassis by a spring, or the bearing of the review arm is highly accurate. However, there was a problem that it was not possible to easily improve workability such as processing and assembly and reduce the cost of parts.

[0004]

[Means for Solving the Problems]

 Therefore, according to the present invention, a review guide post is provided movably in a working position or a non-working position for separating the tape from the capstan, and the review arm for mounting the post is rotatably supported on the chassis by a substantially vertical support shaft. When the review arm is contacted with the downward slope of the operation lever that switches the tape operation, when the review guide post is supported at the position where the tape is released from the capstan, the downward slope of the operation lever moves the review arm downward. Since it is pressed, the review guide post can be supported at a predetermined height by preventing the review arm from moving up and down, and a spring for pulling the review arm downward or a high-precision bearing structure is not required as compared with the conventional method, and processing assembly is possible. It is possible to easily improve workability and reduce manufacturing cost.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view of a main part, FIG. 2 is a plan view of a VHS video tape recorder, and FIG. 3 is a bottom view of the same. In the figure, (1) is a rectangular deck chassis in plan view, and (2) is a recording / playback head. A rotation-dependent head cylinder for mounting the VHS video cassette (9), which is vertically installed on slide bodies (7) and (8) that guide the slides through rails (5) and (6). Tape loading pin for winding the tape of the tape on the cylinder (2), supply and take-up reel shafts for supporting the tape reel of the cassette (9) for engagement, and (12) for audio. A head for inputting / outputting signals and the like, (13) an erasing head, (14) a capstan, and (15) a pinch roller.

Further, in the figure, (16) is a cassette holder for supporting 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.

Further, a cam mechanism (19) is arranged on the upper surface of the chassis (1) on the right side of the cylinder (2). The cam mechanism (20) is provided, and as shown in FIG. The loading motor (22) is fixed to the upper side of the gear mechanism (19) via the bracket (21), and the motor (22) is linked to the worm gear (26) via the pulleys (23) (24) and the belt (25). A worm wheel gear (27) formed on the outer peripheral surface of the cam body (20) is continuously meshed with the worm gear (26) so that the motor (22) rotates the cam body (20) forward and backward. ..

Further, a cassette loading / unloading lever (28) for swinging by the cam body (20) is provided, and the loading / unloading lever (28) is loaded into the cassette via a rack gear (29) and cassette loading / unloading gears (30) (30). The cassette holder (16) is connected to the holder (16) and is slidably moved back and forth and up and down in association with the swing of the inlet / outlet lever (28), and the cassette (9) is moved relative to the reel shafts (10) and (11). ) Is configured to move in and out.

Further, as shown in FIG. 3, a tape loading lever (31) that reciprocally slides by the rotation of the cam body (20) is provided on the rear surface of the chassis (1), and the slide bodies (7) (8) are also provided. ) Is attached to the left and right shafts (35) and (36) on the rear surface of the chassis (1) so that the tape loading arms (33) and (34) are connected to the gears (37) ( 37) each arm (33) (34) is connected, one arm (34) is connected with the lever (31) through a pinion gear (38) and a rack gear (39), and the lever (31) is connected. The tape loading pins (3) and (4) are reciprocally slid by the guide of the rails (5) and (6) through the arms (33) and (34) of the reel shaft (10). (1 1 ), The tape of the cassette (9) is pulled out by the forward movement of the pins (3) and (4) and wound around the cylinder (2), while the tape is returned by the backward movement of the pins (3) and (4). The cassette is configured to be returned to the cassette (9).

Further, a flywheel motor (40) for driving the capstan shaft (14) is provided, and a tension pulley (43) is attached to an output pulley (41) of the motor (40) via a belt (42). As shown in FIG. 5, the clutch gear (44) and the swing arm (45) are pivotally supported on the support shaft (46) of the tension pulley (43), and the clutch gear (44) is connected to the clutch gear (44). An idle gear (47) that is constantly meshed is pivotally supported on the swing arm (45). When the clutch lever (48) is off-supported as shown in FIG. 5, the tension pulley (43) and the clutch gear (44) are ) At a predetermined torque or less, and the on-support of the clutch lever (48) allows the tension pulley (43) and the clutch gear (44) to be integrally key-connected. It is configured as

Further, the tension wheel (43) and the swing arm (45) are swung together with the flywheel motor (40) in the normal and reverse directions within a range regulated by the stoppers (49) (49). The idle gear (47) is selectively meshed with one of the gears (50) (51) of each reel shaft (10) (11) to drive each reel shaft (10) (11) in the tape winding direction. It is configured to do.

Further, as shown in FIGS. 4 and 5, a tape tension lever (52) for maintaining the tape tension when the tape is pulled out from the cassette (9) and a back tension lever (for moving the reel shaft (10) (11) into and out of contact with each other. 53 (54), brake levers (55) (56), and a mode lever (57) for switching the clutch lever (48), the cassette (9) mounted on the reel shafts (10) (11) Pins (58) (58) which are in contact with the bottom surface and support the cassette (9) at a predetermined height are vertically fixed to the chassis (1), and the pins (58) (58) and the long holes (59) ( 59) Mount the mode lever (57) on the upper surface of the chassis (1) so that the mode lever (57) can slide left and right.

Further, a linkage lever (60) for switching the mode lever (57) by rotation of the cam body (20) is provided, and an intermediate portion of the lever (60) is attached to the chassis (1) via a support shaft (61). It is rotatably attached, and both ends of the linkage lever (60) are connected to the cam body (20) and the mode lever (57), and the linkage lever (60) is swung by the forward and reverse rotation of the cam body (20). The lever (57) slides back and forth, and the levers (48) (52) (53) (54) (55) are used for tape constant speed moving mode, tape fast-forwarding mode, and tape rewinding mode for recording / playback. (56) is configured to be switched.

Further, as shown in FIGS. 1 and 6, the pinch roller (15) is connected to a pinch roller arm (62) rotatably provided and a cam groove (63) of the cam body (20). The cam lever (64) is rotatably supported by a support shaft (65) on the upper surface of the chassis (1), and the arm (62) and lever (63) are supported via a spring (66) and a stopper (67). 6 are rotatably connected to each other within a predetermined range, and in the reproduction state of FIG. 6, the cam lever (64) is rotated counterclockwise by the clockwise rotation of the cam body (20) to move the cam lever (64). Separate from the stopper (67), press the pinch roller (15) to the capstan (14) with a spring (66), and attach the video tape (68) between the capstan (14) and the pinch roller (15). The video tape (68) is made to run at a constant speed by gripping and rotating the capstan (14), and the cam body (20) of FIG. 6 is further rotated clockwise in the rewinding reproduction (review) state of FIG. By doing so, the cam lever (64) is rotated clockwise, the pinch roller arm (62) is integrally connected to the cam lever (64) through the stopper (67), and the pinch roller (15) is moved from the capstan (14). It is configured so that the review operation of rewinding the video tape (68) at high speed is performed by rotating the supply reel shaft (10) counterclockwise.

Further, a review guide post () for rotatably supporting the review arm (70) on the upper surface of the chassis (1) by a substantially vertical support shaft (69) and separating the video tape (68) from the capstan (14). 71) is attached to the review arm (70), and as shown in FIG. 7, the linkage lever is an operation lever for switching the tape (68) operation to a play operation, a rewind reproduction operation (review) operation, or the like. A downward slope (72) is formed on (60), and the cam body (20) is rotated clockwise in the reproduction state of FIG. 6 to move the pinch roller (14) from the capstan (14) as shown in FIG. At the same time as releasing 15), the linkage lever (60) is rotated counterclockwise so that the downward slope (72) of the lever (60) is brought into contact with the review arm (70) to reproduce the movement. In the middle of switching from the work to the rewinding (review) operation, the review guide post (71) in the non-acting position of FIG. 6 is operated in association with the operation of separating the pinch roller (15) from the capstan (14). It is moved to the position and separated from the capstan (14) by the tape guide post (73) provided between the audio head (12) and the capstan (14), the pinch roller (15) and the review guide post (71). The tape (68) is stretched and supported at the position, and the tape (68) on the cylinder (2) side is pulled by the review guide post (71) that moves to the working position, and the pinch roller (15) is separated from the capstan (14). The tape (68) that sometimes occurs is designed to eliminate slack.

Further, as shown in FIG. 7, a synthetic resin bearing (74) is integrally formed on the chassis (1) by an outsert molding process, and a hook (75) at the lower end of the bearing (74) is attached to the shaft ( 69) The lower end of the linkage lever (60) is slidably fitted into the wheel groove (76) at the lower end, and the support shaft (69) is attached to the review arm (70). ), Press the review arm (70) downward to support it in the operating position, set the review arm (70) height by the upper surface of the bearing (74), and set the review guide post (71). It is configured to support at a predetermined height.

Further, a hook (77) is integrally formed by cutting and raising a part of the chassis (1) obliquely upward, and the hook (77) is formed on the upper surface of the chassis (1) below the cassette holder (16) made of sheet metal. 77), the middle of the tension spring (78) is locked, one end side of the spring (78) is extended obliquely above the upper surface of the chassis (1), and the tape (68) mounting position (tape loading state) The extended end of the spring (78) is brought into contact with the bottom surface of the cassette holder (16) to connect the cassette holder (16) to the chassis (1) via the spring (78) and to ground. The other end of the spring (78) is connected to the review arm (70) so that the review guide post (71) is not operated by the spring (78) as shown in FIG. 6 except in the rewinding reproduction state of FIG. In position The review guide post (71) is movably provided at the working position of FIG. 1 where the tape (68) is separated from the capstan (14) and the non-working position of FIG. 78) returns the review guide post (71) to the non-operating position, the spring (78) pulls the review arm (70) obliquely downward, and the downward slope (72) of the link lever (60) causes the reviewer arm (70) to move downward. It is configured so as to promote the action of pushing down the frame (70).

[0018]

[Effect of the device]

 As is apparent from the above embodiments, the present invention provides the review guide post (71) movably to the working position or the non-working position where the tape (68) is separated from the capstan (14), and the post (71) is installed. The review arm (70) to be attached is rotatably supported on the chassis (1) by a substantially vertical support shaft (69), and is attached to the downward slope (72) of the operation lever (60) for switching the operation of the tape (68). With the review arm (70) abutting, when supporting the review guide post (71) at the position where the tape (68) is separated from the capstan (14), the downward slope of the operation lever (60). Since the review arm (70) is pressed downwards by this, the review arm (70) can be prevented from moving up and down, and the review guide post (71) can be supported at a predetermined height. Compared to the past, a spring that pulls the review arm (70) downward or a highly accurate bearing structure is not required, and workability such as processing and assembly can be improved and manufacturing cost can be reduced easily. Is.

[Brief description of drawings]

FIG. 1 is a plan 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 a plan view of a link lever portion.

FIG. 5 is a plan view of a mode lever portion.

FIG. 6 is an operation explanatory view of the previous figure.

FIG. 7 is a side view of the review guide post section.

[Explanation of symbols]

 (1) Chassis (14) Capstan (15) Pinch roller (60) Link lever (operation lever) (68) Tape (69) Spindle (70) Review arm (71) Review guide post (72) Downward slope

Claims (1)

[Claims for utility model registration] [Claim 1] A review guide post is provided movably in a working position or a non-working position where the tape is separated from the capstan, and a review arm for mounting the post is attached to the chassis by a substantially vertical spindle. A tape deck, wherein the review arm is abutted on a downward slope of an operation lever for rotatably supporting the shaft and for switching a tape operation.