JP2511273Y2 - Tape deck - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape deck incorporated in a video tape recorder for recording or reproducing data by mounting a video cassette, an audio cassette or a digital recording cassette.

[0002]

2. Description of the Related Art Conventionally, a tape loading lever is swung by rotation of a cam body, a loading gear is rotated by a rack gear of the lever, a tape loading pin is reciprocated, and a tape of a cassette is put in and out of a cylinder (head). There was technology.

[0003]

In the prior art, it is necessary to secure a space for swinging the tape loading lever, and a fulcrum for pivotally supporting the lever is required. There is a problem in that the space cannot be made compact and the number of parts for attaching the lever cannot be easily reduced.

[0004]

However SUMMARY OF THE INVENTION The present invention, as well linking the rack gear of the tape loading lever loading gear for reciprocating the tape loading pins, the tape loading lever cam body that will be rotated by Rohde Ing motor On the cam floor
Connect the pins and attach the cam floor pin to the chassis.
A linear guide body that linearly reciprocally slides and supports
The tape deck provided on the chassis, characterized in that the sliding surfaces of the chassis at right angles against the reciprocating sliding direction of the cam <br/> Furoapin provided in the tape loading lever, By linear movement of the tape loading lever, the mounting space of the lever can be made more compact than before and the layout can be simplified, and the conventional swing fulcrum is not required, reducing the number of parts and reducing the manufacturing cost. And the sliding surface of the tape loading lever with the chassis further stabilizes the reciprocating sliding movement of the lever, and the linearly moving lever can surely perform the tape loading. is there.

[0005]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 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 VHS video tape recorder.
Is a rectangular deck chassis in plan view, (2) is a rotatable head cylinder for mounting a recording / playback head, etc., (3)
(4) is a tape which is erected on slide bodies (7) and (8) which slide and guide via rails (5) and (6) to wind the tape of the VHS video cassette (9) around the cylinder (2). Loading pins, (10) and (11) are supply and take-up reel shafts that support the tape reels of the cassette (9) as engaging shafts, (12) is a head that inputs and outputs audio signals, and (13) is an erasing head. (14) is a capstan, and (15) is a pinch roller.

In the figure, (16) is the cassette (9).
The cassette holder (17) and (18) are left and right guide plates which stand upright on the upper surface of the chassis (1) and movably mount the cassette holder (16) at the cassette (9) entrance / exit position or recording / reproducing position. .

Further, a cam mechanism (19) is provided on the upper surface of the chassis (1) on the right side of the cylinder (2). The cam mechanism (20) is provided with a disc-shaped cam body (20) as shown in FIG. A loading motor (22) is fixedly mounted on the upper side of the mechanism (19) via a bracket (21).
3) The motor (22) is linked to the worm gear (26) via the (24) and the belt (25), and the cam body (2) is connected.
0) The worm wheel gear (27) formed on the outer peripheral surface is always meshed with the worm gear (26), and the motor (2)
2), the cam body (20) is configured to rotate forward and reverse.

Further, there is provided a cassette access lever (28) which is swung by the cam body (20), and the access lever (28) is connected to the cassette via a rack gear (29) and cassette access gears (30) (30). Holder (1
6), the cassette holder (16) is slid back and forth and up and down in conjunction with the swing of the access lever (28), and the cassette (9) is moved relative to the reel shafts (10) and (11).
It is configured to let in and out.

Further, as shown in FIG. 3, a cam body (20)
A tape loading lever (31) is provided on the rear surface of the chassis (1) for reciprocating sliding by rotation of the tape loading arm, and is connected to the slide bodies (7) (8) via links (32) (32). 33)
(34) the left and right axes (35) (3
6) Swingably attached to the loading gear (37)
Each arm (33) (34) is connected via (37), and the lever (31) is connected to one arm (34) via a pinion gear (38) and a rack gear (39), and the lever (31) is connected. ) Sliding each arm (3
3) A tape loading pin (3) (4) is slid back and forth by guiding rails (5) (6) through (34), and a cassette (9) supported on reel shafts (10) (11). While the tape is pulled out by the forward movement of the pins (3) and (4) and wound around the cylinder (2), the pins (3)
The tape is returned to the cassette (9) by the returning movement of (4).

Also, a flywheel motor (40) for driving the capstan shaft (14) is provided, and a tension pulley (43) is connected 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 supported on the support shaft (46) of the tension pulley (43), and are always meshed with the clutch gear (44). The idle gear (47) is rotatably supported by 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 fixed. While linking below the torque,
The tension pulley (43) and the clutch gear (44) are integrally key-coupled by the ON support of the clutch lever (48).

The flywheel motor (40)
, The tension pulley (43) and the swing arm (45) are rotated and swung together within the range regulated by the stoppers (49) and (49), and each reel shaft (10) is rotated.
The idle gear (47) is selectively meshed with one of the gears (50) and (51) of (11), and each reel shaft (10)
(11) is configured to be driven in the tape winding direction.

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 coming into contact with and separating from the reel shafts (10) and (11). A cassette (9) having a mode lever (57) for switching the clutch lever (48), and a mode lever (57) for switching between the clutch lever (48) and the reel shaft (10) (11); Pins (58) and (58) for supporting the cassette (9) at a predetermined height in contact with the bottom surface are erected and fixed to the chassis (1), and the pins (58) and (58) and the elongated holes (5) are fixed.
9) The mode lever (57) is attached to the upper surface of the chassis (1) via the (59) so as to be slidable left and right.

A link lever (60) for switching a mode lever (57) by rotation of the cam body (20) is provided, and an intermediate portion of the lever (60) is rotated to a chassis (1) via a support shaft (61). Attach it freely, and connect the link lever (6) to the cam body (20) and the mode lever (57).
0) The both ends are connected, and the link lever (60) is swung by forward / reverse rotation of the cam body (20), and the mode lever (5) is rotated.
7) The levers (48), (52), (53), and (54) are set in the tape constant speed movement mode, the tape fast forward mode, and the tape rewind mode for performing recording and playback.
It is configured to switch between (55) and (56).

Further, as shown in FIGS. 1 and 6 to 8,
Support shaft (62) for fixing the upper end to the bracket (21)
The cam body (20) is rotatably supported on the shaft, and the lower end of the cam floor pin (63) is caulked and fixed to one end of the loading lever (31), and the tape loading cam groove (64) on the lower surface side of the cam body (20). The upper end of the pin (63) is engaged with the support shaft (62).
The chassis (1) is formed with a long hole (65) extending in a radial direction centered on the center of the pin (63), and the roller (66) is supported by the pin (63) to integrally form a flange portion ( 67) and the lever (31) sandwich the chassis (1), and the pin (63) is inserted into the long hole (65) through the roller (66), and the lever (3) is attached to the chassis (1).
1) Make one end side slidably supported.

The middle portion of the lever (31) having an L shape in plan view is bent in the sliding direction of the lever (31) to form a step portion (68) having a crank shape in side view, and the chassis (1). A long hole (69) extending substantially in the same direction as that of the long hole (65) is formed in the lever (31), and the right shaft (36) on the rear surface of the chassis (1) is inserted into the long hole (69).
A lever (31) is slidably supported on the right shaft (36) via a stopper ring (70). The lever (31) and the loading gear (37) and the pinion gear (38) integrally formed with each other are stopper rings. (70) is attached to the right shaft (36) and linearly reciprocally slidably guides and supports the lever (31) through the elongated holes (65) (69) which are linear guide bodies. The lever (31) is slid back and forth by forward and reverse rotation of (20), the loading pins (3) and (4) are reciprocated through the rails (5) and (6), and the tape of the cassette (9) is taken in and out. Is configured as follows.

Further, the loading arm (33)
The springs (71) and (71) are biased between the (34) and the loading gears (37) and (37), and the loading pins (71) and (71) are attached to the ends of the rails (5) and (6) on the tape pull-out side. 3) The pin (3) is elastically supported by (4) and is wound around the cylinder (2) by tape tension.
It is configured to prevent (4) from returning.

Further, as shown in FIG. 8, a left shaft (35) made of synthetic resin is integrally formed on the chassis (1) by an outsert molding process, and a ring is formed inside the shaft core hole (72) of the left shaft (35). The protrusion (73) is integrally formed, and the hook (75) is integrally formed inside the shaft hole (74) of the synthetic resin loading gear (37). The left shaft (35)
When the shaft hole (74) of the gear (37) is inserted and fitted into the shaft, the hook (75) is inserted into the shaft core hole (72), and the tip of the hook (75) engages with the ridge (73). , Left axis (35)
The gear (37) is rotatably supported by the hook (75) and the protrusion (73) is engaged with the hook (75) to prevent the gear (37) from falling off, and the hook (75) is attached to the protrusion (73).
The left shaft (35) to the gear (37) by disengaging
Is configured to be removable.

[0018]

As is apparent from the above embodiments, according to the present invention, the rack gear (39) of the tape loading lever (31) is attached to the loading gears (37) (37) for reciprocating the tape loading pins (3) (4). with linking the said tape loading lever (3 <br/> Ru cam body is rotated by the loading motor (22) (20)
Connect the cam floor pin (63) provided in 1) ,
The cam floor pin (63) to the chassis (1)
A linear guide body (6
5) (in the tape deck having a 69) to the chassis (1), wherein the sliding surface of the chassis (1) at right angles against the reciprocating sliding direction of the Kamufuroapin (63) tape Rohde Ing lever Since the tape loading lever (31) is linearly moved, the mounting space of the lever (31) can be made more compact than before and the arrangement can be simplified and the like. It is possible to easily reduce the manufacturing cost by reducing the number of parts by eliminating the swinging fulcrum of the tape loading lever (31), and the sliding surface of the tape loading lever (31) with the chassis (1) is the lever (31). The function of further stabilizing the reciprocal sliding of (31) and the linear movement of the lever (31) enable reliable tape loading.

[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 unit.

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

FIG. 6 is a front view of a tape loading lever portion.

FIG. 7 is a partial view of the same.

FIG. 8 is an exploded view of the same.

[Explanation of symbols]

 (3) (4) Tape loading pin (20) Cam body (22) Loading motor (31) Tape loading lever (37) Loading gear (39) Rack gear (65) (69) Long hole (linear guide body)

Claims (1)

(57) [Scope of utility model registration request] 1. A rack gear (39) of a tape loading lever (31) is connected to a loading gear (37) (37) for reciprocating a tape loading pin (3) (4), and is rotated by a loading motor (22). Kamufuroapin provided the the tape loading lever (31) to the cam member (20) which are Ru is (63)
Connect the cam floor pins (63) to the chassis
Directly supporting and reciprocating linearly with respect to (1)
Line guide body (65) (69) in the tape deck Ke set <br/> to the chassis (1), said Kamufuroapin (6
Wherein the sliding surface of the chassis (1) at right angles against the reciprocating sliding direction of 3) Tape loading lever (3
A tape deck that is provided in 1).