JPH058734U - Tape deck - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] The loading gears 37, 37 that are normally and reversely rotated by the tape loading lever 31 are integrally formed with the loading arms 33, 34, and the links 32 are connected to the tape loading pins 3, 4. 32 is telescopically connected to the loading arms 33 and 34, and springs 71 and 71 for elastically pressing the tape loading pins 3 and 4 are provided between the loading arms 33 and 34 and the links 32 and 32 at the tape pull-out end side. Connected to. [Effect] By integrally forming the loading gears 37, 37 and the loading arms 33, 34, it is possible to easily reduce the number of parts and simplify the assembling work, and simplify the mounting structure of the spring 71 more than ever. It can be done easily.

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]

 Conventionally, there has been a technique in which a loading arm is swung by forward / reverse rotation of a loading gear and a tape loading pin is reciprocally moved to put a tape in a cassette into and out of a head cylinder.

[0003]

[Problems to be solved by the device]

 In the prior art, the loading gear and the loading arm are formed as separate parts, and the spring for elastically pressing the tape loading pin at the tape pull-out end side is connected between the loading gear and the loading arm. Therefore, the tape loading structure is simplified. However, there was a problem that it was not possible to reduce the cost and manufacturing cost easily.

[0004]

[Means for Solving the Problems]

 Therefore, according to the present invention, a loading gear that is rotated forward and backward by a tape loading lever is integrally formed with a loading arm, and a link for connecting to a tape loading pin is extendably connected to the loading arm, and the tape is provided at the tape pull-out end side. A spring for elastically pressing the loading pin is connected between the loading arm and the link. By integrally forming the loading gear and the loading arm, the number of parts is reduced and the assembling work is simplified. In addition, since a spring is provided between the loading arm and the link that can be elastically connected, the spring mounting structure can be simplified and the tape loading structure can be simplified compared to the conventional one. And reduction of manufacturing costs Is what you get strive to.

[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) can be swingably attached to the loading gear (37). Each arm (33) (34) is connected via (37), and said lever (31) is connected to one arm (34) via a pinion gear (38) and a rack gear (39), and said lever (31 ) Slides the tape loading pins (3) and (4) back and forth by guiding the rails (5) and (6) through the arms (33) and (34). 10) The tape of the cassette (9) supported by (11) is pulled out by the forward movement of each pin (3) (4) and wound around the cylinder (2), while the return movement of each pin (3) (4) is performed. Is configured to return the tape 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. 6 to 8, the cam body (20) is rotatably supported by the support shaft (62) for fixing the upper end to the bracket (21), and the loading lever (31). The lower end of the cam floor pin (63) is caulked and fixed to one end, and the upper end of the pin (63) is engaged with the tape loading cam groove (64) on the lower surface of the cam body (20). A flange formed integrally with the pin (63) by forming a long hole (65) extending in a radial direction centered on the chassis (1) in the chassis (1) and supporting a roller (66) on the pin (63). The chassis (1) is sandwiched between the part (67) and the lever (31), and the pin (63) is inserted into the elongated hole (65) through the roller (66), and the lever (31) is attached to the chassis (1). One end side is slidably supported Let

In addition, the middle of the lever (31) having an L shape in a plan view is bent in a sliding direction of the lever (31) to form a step portion (68) having a crank shape in a side view, and the chassis (1). A long hole (69) extending substantially in the same direction as 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) which are integrally formed with each other are stopper ring. (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, By the normal and reverse rotation of the body (20), The bar (31) is slid back and forth, and the loading pins (3) and (4) are reciprocally moved via the rails (5) and (6), so that the tape of the cassette (9) can be taken in and out.

Further, as shown in FIG. 1, springs (71) and (71) are urged between the loading arms (33) and (34) and the links (32) and (32), and the rail on the tape pull-out side is pulled. (5) The loading pins (3) and (4) are elastically supported by the springs (71) and (71) at the ends, and the pins (3) and (4) are returned by the tape tension wound around the cylinder (2). The loading arms (33) and (34) and the loading gears (37) and (37) are integrally formed by a synthetic resin molding process, and a long hole (72) is formed at the tip of the loading arms (33) and (34). (72) is provided, the tips of the pins (73) and (73) are fixed to the links (32) and (32) by caulking (74) and (74), and the pin (73) is slidably inserted into the long hole (72). Let the link (32 ) (32) is telescopically connected to the loading arms (33) (34), and the hooks (75) (75) of the loading arms (33) (34) and the pins (73) (73) are Ω-shaped. The both ends of the springs (71) and (71) are locked, and the springs (71) and (71) are connected between the links (32) and (32) and the loading arms (33) and (34) to start the tape pull-out start end. When the loading pins (3) and (4) are positioned on the side and during the withdrawal, one end side of the springs (71) and (71) is attached to the convex portions (76) and (76) of the loading arms (33) and (34). The pin (73) is rotatably loosely fitted and supported at the end of the long hole (72) between the spring (71) and the convex portion (76), while the head of the pin (73) makes contact with the spring. Secure the spring (71) to the pin (73). When the loading pins (3) and (4) are positioned on the end side of the tape drawer, the pins (73) are moved to the proximal ends of the loading arms (33) and (34) by the guide of the long holes (72). , The spring (71) and the pin (73) are elastically engaged, and the loading pin (3) and (4) are pressed against the end of the tape with the spring (71) force through the link (32) to load the loading pin (3). (4) is structured so as to be elastically supported.

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 the left shaft (35) is formed inside the shaft core hole (77). The ring-shaped ridge (78) is integrally formed, and the hook (80) is integrally formed in the shaft hole (79) of the synthetic resin loading gear (37). When the shaft hole (79) of (37) is inserted and fitted, the hook (80) is inserted into the shaft core hole (77), the tip of the hook (80) engages with the ridge (78), and the left The gear (37) is rotatably supported on the shaft (35), and the hook (80) and the ridge (78) are engaged with each other to prevent the gear (37) from falling off, and the ridge (78). On the other hand, by removing the hook (80), the gear (37) can be removed from the left shaft (35). Is configured.

[0018]

[Effect of the device]

 As is apparent from the above-described embodiments, the present invention integrally forms the loading arms (33) and (34) on the loading gears (37) and (37) that are normally and reversely rotated by the tape loading lever (31), and the tape loading pin (3). ) (4) is connected to the loading arms (33) and (34) in a telescopic manner so that the tape loading pin (3) (4) is pressed against the loading arm (33) (34). Springs (71) (71) are connected between the loading arms (33) (34) and the links (32) (32), and the loading gears (37) (37) and the loading arms (33) are connected. ) By integrally forming (34), it is possible to easily reduce the number of parts and simplify the assembly work. Since the springs (71) and (71) are provided between the loading arms (33) and (34) and the links (32) and (32) to be connected to the spring, the structure for attaching the spring (71) can be simplified more easily than before. Therefore, the tape loading structure can be simplified and the manufacturing cost can be reduced more easily than ever before.

[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 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 (31) Tape loading lever (32) Link (33) (34) Loading arm (37) Loading gear (71) Spring

Claims (1)

Claims for utility model registration: 1. A loading gear that is rotated forward and backward by a tape loading lever is integrally formed with a loading arm, and a link for connecting to a tape loading pin is telescopically connected to the loading arm. A tape deck, characterized in that a spring for elastically pressing the tape loading pin is connected between the loading arm and the link at the end of the drawer.