JPH058708U - Tape deck - Google Patents

Abstract

(57) [Summary] (Corrected) [Configuration] The head base plate 69 is attached to the spindle 70 on the upper surface of the chassis 1 via the height adjusting nut 71 and the spring 72 for raising, and the height can be freely adjusted on the upper surface of the chassis 1. In the tape deck in which the head base plate 69 is brought into contact with the slope 81 of the horizontal adjustment nut 80 provided in the above, the raising spring 72 is connected to the head base plate 69 at a position apart from the support shaft 70, and the horizontal adjustment nut 80 is provided. The head base plate 69 is configured to generate an upward moving force by abutting the inclined surface 81 thereof. The lifting force of the raising spring 72 and the lateral adjustment nut 80 is used as a fulcrum at the connecting portion with the support shaft 70. A rotational force is applied to the head base plate 69. [Effect] Even if a gap such as a processing error is formed in the connecting portion between the head base plate 69 and the support shaft 70, the head base plate 69 moved against the lifting spring 72 can be properly restored. It is a thing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The invention is a video cassette, audio cassette or digital recording cassette. It is installed in a video tape recorder, etc. that is used for recording or playback by mounting Tape deck.

[0002]

[Prior art]

  Conventionally, the head base is attached to the spindle on the top surface of the chassis via the height adjustment nut and the lifting spring. Attach the plate and adjust the height of the horizontal adjustment nut on the upper surface of the chassis. There is a technology to adjust the head position in the vertical and horizontal directions by bringing the head base plate into contact with the slope. It was

[0003]

[Problems to be solved by the device]

  In the above-mentioned conventional technology, a gap such as a processing error is formed in the connecting portion between the head base plate and the support shaft. Then, when the head base plate is pushed down, even if the head base plate is raised by the spring for raising , The head support position is easy to change without returning to the original position, and the head resilience is To maintain this, it is necessary to process and assemble the connecting part between the head base plate and the spindle with high precision. In addition, structural and functional problems such as the need to set a large pressure for the rising spring. There was a problem.

[0004]

[Means for Solving the Problems]

  Therefore, the present invention supports the upper surface of the chassis through the height adjustment nut and the spring for raising. Sideways mounting the head base plate on the shaft and adjusting the height on the top of the chassis In the tape deck that abuts the head base plate on the slope of the adjustment nut, Connect the lifting spring to the head base plate at a position away from the shaft, and The head base plate is configured to generate an upward movement force when the slope surface of the And is supported by the lifting force of the lifting spring and the sideways adjustment nut. Since the head base plate is given a rotational force with the connection part with the shaft as a fulcrum, the head base plate and the support shaft Even if a gap such as a processing error is formed at the connecting part of the, move it against the rising spring. The head base plate can be restored properly, and compared to the conventional structure, the structure of the connecting part between the head base plate and the support shaft is improved. It is possible to easily improve processing and assembling such as simplification and reduce manufacturing cost. Is.

[0005]   In addition, a U-shaped support is provided on one side of the head base plate to form a vertical shaft hole, Insert the support shaft on the upper surface into the vertical shaft hole and at least one of the vertical shaft hole. By forming the polygon into a polygon, the lifting force of the lifting spring and the lateral adjustment nut can be increased. When acting as the rotational force of the head base plate, the peripheral side surface of the support shaft is attached to the two sides of the polygon of the shaft hole. Since they abut, it is possible to improve the restoration support accuracy of the head base plate more easily than before. Is.

[0006]

【Example】

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a side view of the main part, and FIG. Is a plan view of the VHS video tape recorder, FIG. 3 is a bottom view of the same, and (1) in FIG. Deck chassis with a rectangular shape in plan view, (2) is a rotary unit for mounting a recording / playback head, etc. The existing head cylinder, (3) and (4) slides and guides via rails (5) and (6). The tape of the VHS video cassette (9) is placed in front of the slide bodies (7) and (8) and placed in front. The tape loading pins (10) and (11) wound around the cylinder (2) are A supply and take-up reel shaft for supporting the tape reel of the set (9) as an engaging shaft, (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.

[0007]   Further, in the figure, (16) is a cassette holder for supporting the cassette (9), and (17) ) (18) is erected on the upper surface of the chassis (1) so that the cassette (9) can be moved in and out. Left and right guide plates for movably mounting the cassette holder (16) at the recording / reproducing position. It

[0008]   Further, a cam mechanism (19) is provided on the upper surface of the chassis (1) on the right side of the cylinder (2). It is provided with a disc-shaped cam body (20) and, as shown in FIG. The loading motor (22) via the bracket (21) above the mechanism (19) Is fixed, and the worm gear (through the pulleys (23) and (24) and the belt (25) is A motor (22) is linked to the motor (26) to form a wall formed on the outer peripheral surface of the cam body (20). The worm wheel (27) is constantly meshed with the worm gear (26), The cam body (20) is configured to rotate forward and backward by (22).

[0009]   Further, a cassette loading / unloading lever (28) that is swung by the cam body (20). Through a rack gear (29) and a cassette loading / unloading gear (30) (30). The access lever (28) to the cassette holder (16), -Sliding movement of cassette holder (16) back and forth and up and down in conjunction with swing of (28) And the cassette (9) is moved in and out of the reel shafts (10) and (11). is doing.

[0010]   Further, as shown in FIG. 3, the table reciprocally slid by the rotation of the cam body (20). A loading lever (31) is provided on the rear surface of the chassis (1) and Tape row connected to the ride body (7) (8) via the links (32) (32) Attach the holding arms (33) (34) to the left and right shafts (35) (36) on the rear surface of the chassis (1). ) Swingably attached to each arm (33) (34) via gears (37) (37). ) Is connected to one arm (34) and the pinion gear (38) and the rack gear ( 39), the lever (31) is connected, and the lever (31) slides. The tape is guided by the rails (5) and (6) through the arms (33) and (34). The loading pins (3) and (4) are slid back and forth, and the reel shaft (10) (1 The tape of the cassette (9) supported by 1) is pulled by the forward movement of each pin (3) (4). While it is taken out and wound around the cylinder (2), the pins (3) and (4) are returned to move the tape. The loop is configured to be returned to the cassette (9).

[0011]   Also, a flywheel motor (40) for driving the capstan shaft (14). The motor is provided with an output pulley (41) of the motor (40) via a belt (42). As shown in FIG. 5, the clutch pulley (43) and the clutch gear (44) are connected. The swinging arm (45) on the support shaft (46) of the tension pulley (43). And the idle gear (47) that is constantly meshed with the clutch gear (44). The swing lever (45) is pivotally supported. As shown in FIG. 5, the clutch lever (48) While supporting the off position, set the tension pulley (43) and clutch gear (44) By interlocking below a predetermined torque, and by supporting the clutch lever (48) on , Tension pulley (43) and clutch gear (44) are integrally key-connected Is configured as follows.

[0012]   In addition, the flywheel motor (40) is rotated forward and backward to stop the stopper (49). Within the range regulated by (49), the tension pulley (43) and the swing arm ( 45) are swung together to rotate the gears (50) (51) of the reel shafts (10) (11). ), The idle gear (47) is selectively engaged with each reel shaft (10). (11) is configured to be driven in the tape winding direction.

[0013]   Furthermore, as shown in FIGS. 4 and 5, the tape when it is pulled out from the cassette (9). Tape tension lever (52) that keeps tension and reel reel (10) (11) Back tension lever (53) (54) and brake lever (55) ( 56) and the mode lever (57) for switching the clutch lever (48) It is equipped with a reel shaft (10) (11) mounted on the bottom surface of the cassette (9). Pins (58) and (58) that contact and support the cassette (9) at a predetermined height are attached to the chassis. It is vertically fixed to (1) and is inserted through the pins (58) (58) and the long holes (59) (59). Then, mount the mode lever (57) on the upper surface of the chassis (1) so that it can slide left and right. .

[0014]   Further, the rotation of the cam body (20) switches the mode lever (57). An engaging lever (60) is provided, and the middle of the lever (60) is attached to the chassis (1) by a support shaft (61). ), And the cam body (20) and the mode lever (57). ) Is connected to both ends of the linkage lever (60), and the cam body (20) is normally and reversely rotated to connect the linkage lever (60). The engaging lever (60) is swung, and the mode lever (57) is slid back and forth. Tape constant speed moving mode, tape fast forward mode, tape rewinding mode Switch each lever (48) (52) (53) (54) (55) (56) Is configured.

[0015]   Further, as shown in FIGS. 1, 6 and 7, a wiring board for audio signal input / output. (62) and connector (63) on the back and top of the audio head (12) , The audio head (12) bottom surface is integrated with the horizontal plate (64) upper surface. It is fixed and the horizontal plate () is attached via the spherical body (65) and the screws (66) (67) (68). 64) is attached to the head base plate (69) so that the tilt can be adjusted, and the chassis (1) A cylindrical support shaft (70) is erected and fixed on the upper surface, and a height adjustment nut (71) and lifting A head base plate (69) is attached to the support shaft (70) via a spring (72). , The U-shaped support portion (73) is integrally formed on one side of the head base plate (69), and A shaft hole (74) and a circular lower shaft hole (75) are provided in the U-shaped upper and lower parts of the support part (73). The support shaft (70) is provided by inserting the support shaft (70) into the vertical shaft holes (74) (75) loosely. A height adjusting nut (71) is screwed onto the screw portion (76) at the upper end, and the nut (71) Is brought into contact with the upper surface of the support portion (73) to prevent the head base plate (69) from rising. , A lifting spring (7) around the outer periphery of the support shaft (70) between the chassis (1) and the head base plate (69). 2) Wind the middle part, and attach one end side of the spring (72) to the hook (77) of the chassis (1). ) To separate the hook (78) at the other end of the spring (72) from the support shaft (70). The head base plate (69) is engaged and connected at the open position.

[0016]   In addition, a screw shaft (79) is erected and fixed on the upper surface of the chassis (1) to form a truncated cone shape. The lateral adjustment nut (80) is screwed onto the screw shaft (79) so that the height can be adjusted, Note that one end of the head base plate (69) on the upward slope (81) of the outer periphery of the nut (80) ( 82) is brought into contact with the lifting spring (72) to rotate it about the support shaft (70). The head base plate (69) by the nut (80) and the support shaft (70). The lifting force of the rising spring (72) at a position away from the One side of the lower shaft hole (75) by the upward movement force generated by the contact of the surface (81). The support shaft (70) is brought into contact with the support shaft (70) and is connected to the support shaft (70) and the lower shaft hole (75). A clockwise rotation moment is applied to the head base plate (69) in the state of FIG. Then, the two sides of the upper shaft hole (74) are brought into contact with the outer periphery of the screw part (76) of the support shaft (70), The audio head (12) on the video tape (83) half-wound on the Linda (2) Are configured to be in sliding contact with each other.

[0017]

[Effect of device]

  As is apparent from the above embodiments, the present invention is directed to the height adjustment nut (71) and the lifting nut. The head base plate (69) is attached to the spindle (70) on the upper surface of the chassis (1) through the spring (72). The horizontal adjustment nut is installed on the upper surface of the chassis (1) so that the height can be adjusted. Tape deck in which the head base plate (69) is brought into contact with the slope (81) of the belt (80) At the position away from the support shaft (70), the ascending spring (72) is attached to the head base plate. (69) and contact of the slope (81) of the lateral adjustment nut (80) The head base plate (69) is configured to generate an upward moving force. By the lifting force of the lifting spring (72) and the lateral adjustment nut (80), the support shaft (70 ) Is used as a fulcrum to apply a rotational force to the head base plate (69), Even if a gap such as a machining error is formed in the connecting portion between the plate (69) and the support shaft (70), it rises. Properly restoring the head base plate (69) that moves against the spring (72). The structure of the connecting portion between the head base plate (69) and the support shaft (70) can be simplified as compared with the conventional one. It is possible to easily improve processing and assembling and reduce manufacturing costs. Of.

[0018]   In addition, a U-shaped support portion (73) is provided on one side of the head base plate (69) to provide a vertical shaft hole ( 74) and (75) are formed, and the support shaft (70) on the upper surface of the chassis (1) is attached to the vertical shaft hole (74 ) (75) and at least one of the vertical shaft holes (74) (75) By forming one of them into a polygonal shape, the lifting spring (72) and the lateral adjustment nut are When the lifting force of the lever (80) acts as the rotational force of the head base plate (69), the shaft hole Since the peripheral side surfaces of the support shaft (70) are in contact with the two sides of the polygon of (74), the head base plate ( The restoration support accuracy of 69) can be improved more easily than before.

[Brief description of drawings]

FIG. 1 is a side 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 partially enlarged view of FIG.

FIG. 7 is a plan view of an audio head unit.

[Explanation of symbols]

(1) Chassis (69) Head base plate (70) Spindle (71) Height adjustment nut (72) Lifting spring (73) U-shaped support (74) Upper shaft hole (75) Lower shaft hole (80) Sideways adjustment nut (81) Slope

Claims (2)

[Scope of utility model registration request] 1. A head base plate is attached to a support shaft on the chassis upper surface via a height adjustment nut and a lifting spring, and the head base plate is abutted on the slope of a lateral adjustment nut provided on the chassis upper surface for height adjustment. In the tape deck to be brought into contact, the raising spring is connected to the head base plate at a position distant from the support shaft, and the upward movement force is generated on the head base plate by the contact of the inclined surface of the lateral adjustment nut. A tape deck featuring. 2. A U-shaped support portion is provided on one side of the head base plate to form a vertical shaft hole, a spindle on the upper surface of the chassis is inserted into the vertical shaft hole, and at least one of the vertical shaft holes is provided as a multi-hole. The tape deck according to the above item 1, wherein the tape deck is formed in a rectangular shape.