JPS6182319A - Cassette deck - Google Patents

Abstract

PURPOSE:To holed an adjusted azimuth state by constituting an azimuth adjusting means of a magnetic head with a flexible control member, which is engaged with the outside peripheral part of the magnetic head to control its turning, and a positioning means which is engaged with the other end part of this control member. CONSTITUTION:A flexible control member 64 which is expanded longitudinally is fixed surrounding a magnetic head 49 on a head base 47. The member 64 is formed symmetrically in the longitudinal direction and has the center part fixed to the base 47. Both of front and rear end parts of the member 64 are placed to interpose the head 49 from the front and the rear, and the U-shaped lower side part is engaged with a projection 49a provided on the outside peripheral part of the head 49 to control turning of the head 49. A screw 64 engaged with the head base 47 has the head part engaged with each of both of font and rear end parts of the member 64, and a pair of springs 66 are interposed between the lower face in both of front and rear end parts of the member 64 and the head base 47. The azimuth of the head 49 is adjusted by screws 65, and the adjusted azimuth state is held.

Description

[Detailed description of the invention]

11.1 The present invention relates to a cullet deck. BACKGROUND TECHNOLOGY When playing back a 41-rack format magnetic tape that has been recorded in both forward and reverse directions, the cassette half is usually reversed and replaced when playback in one direction is completed, but this replacement is troublesome. To solve this problem, cassette decks with a built-in so-called auto-reverse mechanism have been developed. As is well known,
The auto-reverse mechanism automatically reverses the magnetic tape and sets the magnetic head to match the tracks in both forward and reverse directions. Various configurations have already been proposed in which the magnetic head can be switched between forward and reverse directions, but for example, when playing a 4-track magnetic tape, a 4-channel magnetic head is installed and 2 tracks of the 4 channels are played back. One method is to electrically switch each channel to match the forward and reverse running of the magnetic tape, or to provide a two-channel magnetic head and mechanically move the main body of the magnetic head in parallel or vice versa to match the forward and reverse running of the tape. There are also forms that allow rotation. In addition to these various magnetic head switching formats, azimuth adjustment can be performed independently for both forward and reverse running of the magnetic tape, and therefore better reproduction frequency characteristics can be obtained compared to other formats. A type of rotating head is adopted. The structure of the azimuth adjustment mechanism for adjusting the azimuth of such a rotating magnetic head is such that a protrusion is provided on the rotating outer periphery of the magnetic head, and the tips of a pair of screws that are screwed into the head stand are arranged so that the magnetic head is rotated at an angle of 180 degrees. There is an odd shape that engages the protrusion each time it rotates. However, with the azimuth adjustment mechanism having this configuration, there is a problem in that the tip of the screw and a portion of the protrusion that abuts the tip are worn out due to repeated impacts, and the azimuth adjustment once made is incorrect. Also, the above impact may cause the screws to become loose. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and the object of the present invention is to provide a collar 1 equipped with an azimuth adjustment mechanism that can reliably adjust the azimuth 18 and maintain the mouth adjustment state.
~ It is to provide depth. The curfew 1 to the deck according to the present invention includes a magnetic head mounted on a head stand V so as to be rotatable about an axis substantially perpendicular to the magnetic tape contact surface, and an angle 1σ current control of the magnetic head. azimuth adjustment means, etc., and the azimuth adjustment means are symmetrical: 11! Gj, one end of which is fixed to the head stand at a substantially straight position of the magnetic head, and the other end extending in a direction spaced apart from each other by the 14
A flexible member 1 that engages with the outer periphery of the magnetic head at a position sandwiching the magnetic head to regulate the rotation of the magnetic head ([a regulating member and a flexible member that engages with the other end of the regulating member]; ≠ of the other end
Positioning J. It is characterized by comprising positioning means. Embodiments Hereinafter, a carre 1 to a deck as embodiments of the present invention will be described with reference to the accompanying drawings. In the figure, reference numeral 1 indicates the entire cassette deck 4. As shown in FIG. 1, the front surface of the housing 2 is provided with a rectangular and laterally elongated opening 2a into which a cassette half (described later) is inserted. However, the term "forward" as used herein refers to the direction indicated by the arrow Y in the figure, and the left-right direction refers to the direction toward the front. Therefore, the direction of arrow X is to the left, and the direction of arrow 7 is upward. As shown in FIGS. 2 and 3, as well as FIGS. 9 and 10, inside the housing 2 is a chassis 3 made of a steel plate or the like.
is provided. As shown in FIG. 4, a pair of reel units 5 are arranged side by side in the front-rear direction on the chassis 3, and are rotatably attached to the chassis. As is clear from FIG. 11, the reel-knit 5 has a rotating shaft 5a fixed to the chassis 3. A reel 5b is rotatably fitted onto the rotation support shaft 5a. A collar 50 and a bush 5d are fitted to the upper and lower ends of the reel 5b, respectively. The collar 50 can be attached to one of the collars 50 inside the cassette half and wound around the magnetic tape. A disk-shaped enlarged diameter portion 5e is formed in the center of the reel 5b, and a double gear 5f having two large and small gears (7) is disposed between the enlarged diameter portion and the bush 5d. , and is rotatably attached to the rotation support shaft 5a. A coil spring 5g is interposed between the double gear 5 and the bush 5d to bias the double gear and the bush away from each other. Furthermore, a felt l-plate 5h is provided between the enlarged diameter portion 5e of the reel 5b and the double gear 5f. The felt plate 511 is attached to the enlarged diameter portion 5e, and is movably abutted on the double gear 5r. An arm 51 is provided between the upper surface of the enlarged diameter portion 5e and the collar 50.
reel 5b is installed at one end of the reel 5b.
It is rotatably attached to the outer periphery of the The lower and upper surfaces of the arm 51 are connected to the expanded diameter portion 5e of the reel 5b and the collar 5.
A coil spring 59 is disposed between the upper washer 5 and the arm 51 to bias the arm downward. On the right side of the reel unit 1 shown in FIGS. 2, 3, 9, and 10, an intermediate lever 7 is disposed extending approximately in the front-rear direction. A rectangular opening 7b is formed at the front end of the intermediate lever 7. , a bottle 8a protruding from the center of a floating lever 8 rotatably installed on the chassis 3 is installed in the opening.
N is given. The floating lever 8 has bottles 8b protruding from both ends thereof, and each bottle is slidably engaged in a long hole 5m formed at the free end of the arm 51 of the reel unit 5. ing. As shown in FIGS. 7 and 18, an end detection lever 10 is disposed near the rear end of the intermediate lever 7. As shown in FIGS. The end detection lever 10 is fixedly installed on the upper surface of the rear end of the chassis 3 so as to protrude upward, or
The upper end of the lever Δ12 is pivotally attached to one end of the lever Δ12, in this case the right end of the lever A. A projection 10a extending downward is provided at the lower end of the end detection lever 10, and the projection is formed at the rear end of the intermediate lever 7 and slidably engages with the large portion 7G. A bottle 10] is protruded from the rear surface of the upper end of the end detection lever 10 shown in FIGS. 7, 9, and 18. The groove detection gear 1/1 is engaged with the rear end surface of the groove detection lever 10. 7th
As is clear from the figure and FIG.
is formed, and substantially mountain-shaped projections 141) having the same shape and projecting in the radial direction of the end detection lever are formed on the circumferential side of the recess.
There are three steps (-) at 120°. In addition, each of the above-mentioned III-shaped protrusions 1 is provided at the center of the four parts 14a.
41] Three projections 1/IG of the same shape are formed, each extending in a q4-shape toward the valley between the two. Each protrusion 141)
When a circle circumscribing the top of the projection 14G and a circle inside the top of each projection 14G are assumed, the diameters of these fields are approximately the same size. The bottle 10]) protrudingly provided on the end detection lever 10 can engage with these protrusions 14b and 14c. The above reel unit 5, intermediate lever 7, floating lever 8, end detection lever 10, end detection gear 1, etc.
4 constitutes a part of a tape end detection mechanism for detecting the end of the magnetic tape being played. As shown in FIGS. 2, 7, 9 and 18, - the rear surface of the rib chassis 11 and the end detection gear 1;
To the left of 4 are four gears 16, 17, meshing in series.
A gear transmission mechanism 20 consisting of gear transmission mechanisms 18 and 19 is provided, and the end detection gear 14 meshes with the R final stage gear 19 of the gear transmission mechanism. As shown in FIG. 18, the first stage gear 16 of the gear transmission mechanism 20 (however, the reference numeral 20 is not shown in FIG. 18) is connected to a worm 22 rotatably attached to the subchassis A1.1. It meshes with. A pulley 23 is integrally formed at the lower end of the arm 22. As shown in FIG. 10, the pulley 23 is
It is rotationally driven by a motor 24 disposed at the right rear end of the chassis 3 via a belt 25 . Ir, belt 2
5 is directly rotated by a small pulley 24a fitted on the output shaft of the motor 24. As is clear from FIG. The rotation direction of the motor 24 is such that the direction of arrow M is the direction of rotation of the motor 24. 23 in the direction of arrow N,
Further, the bell l-25 is turned so that the pair of flywheels 27 always rotate in the direction of arrows 0 and P, respectively.The flywheel 27 has large and small gears on its outer and inner circumferences. It has parts 27a and 27b.Behind the two large and small glare parts formed on the corner 27, there is a small one.
gear part 27b4.1, a pair of front and rear idler gears 2
It is designed to mesh with the large diameter gear portion of the tuple gear 5r of the reel unit 5 via B. As is clear from FIGS. 2, 3, and 9, the idler gear 28 is rotatably attached to one end of a support lever 30 that is swingably provided to the sillage 3 via a shaft member 30a. The support lever 30 is attached to and detached from the double gear 5 of the reel unit 5 when the support lever swings.
0b urges the idler gear 28 in a direction closer to the double gear 5r. As shown in FIG. 2, FIG. 7, FIG. 9, and FIG.
The first gear 33 and the second gear 34 are rotatably attached above the

[It's being pulled. The first south wheel 33 meshes with the gear 16 of the gear transmission mechanism 20 (for example, see FIG. 7), and meshes with the gear 18 of the second gear transmission mechanism 34 IJ. Here, the gear transmission mechanism 20, the worm 22, the pulley 23, the bells 1 to 25, etc., drive the motor 24 as a single drive source to the first gear 33 and the second gear 34.
A mechanism for applying a rotational force f'' is configured to apply a rotational force f1 from . Further, the rotational force (d) applying mechanism and the motor 24 constitute a rotational force applying means for rotationally driving the first gear 33 and the second gear 34. First, we will explain the structure that connects the first gear and the head stand. For example, as shown in FIGS. 7 and 18, there is a A bottle 33a is provided protruding from the bottle, and the first gear 33 is attached to the bottle in the direction of the time shadow 1 in FIG.
One end of a coil spring 35 is hung. The coil spring 35 is connected to the rotation support shaft of the gears 16 and 18 (
The other end is hooked onto the plays 1 to 36, which are fixed to the tip of the holder (not shown). As shown in FIG. 2, FIG. 3, FIG. 9, and FIG. - Bent portion 3 extending upward parallel to sear A
a is formed. As shown in FIG. 4b, a control plate 39 made of a wire plate is attached to the On surface of the bent portion 3a so as to be movable in the left-right direction. Control board 3
The movement limit position in the left direction of the control plate 9 is called the most forward movement position of the control plate, whereas the movement limit position in the right direction is called the most return movement position. A coil spring 40 is connected to the right end of the control plate 39 for biasing the control plate to the right, that is, in the backward movement direction. A protrusion 39a with which the pin 33a of the first gear 33 can be engaged is formed at the upper end of the control plate 39 at approximately the center thereof. The projection 39a engages with the bin 33a at its right edge, and therefore the control plate 3
9 is moved forward by the rotation of the 16th!1 wheel 33. As shown in FIGS. 2, 4, and 10, the lower part of the control plate 39 is connected to the control plate via a fill spring 41, and moves to the left as the control plate moves forward. A lever B 42 is arranged. Lever B
A protrusion 3 formed at the lower end of the control plate 39 is located at the right end of the control plate 39.
A protrusion 42a that engages with the right edge of 9b is formed,
As a result, the lever B42 also returns to the right as the control plate 39 moves back due to the biasing force of the coil spring 40. It is clear from FIGS. 2, 8, and 10 that the left end of the lever 842 is connected to the chassis 3.
The lever 044 is pivotally connected to the rear end of a lever 044 which is rotatably attached to the chassis 3 at its center via a pin 44a. The front end of this lever C44 is pivotally attached to a head stand 47 provided on the chassis 3 so as to be able to reciprocate in the left-right direction. Note that the magnetic tape is driven in the front-rear direction, and therefore, the moving direction of the head stand 47 is approximately perpendicular to the tape transport direction. The above-mentioned first gear 33, control plate 39, coil spring 40.4'1, lever 842, lever C14
A head stand driving mechanism for driving the head stand 47 is constituted by these and related peripheral small members. Next, the second gear 34 and its related members will be explained. The second gear 34 is for rotating the magnetic head 49 provided on the head stand 47, and is disposed at a position farther from the head stand 47 than the first gear 33. Further, the rotation ratio between the first gear 33 and the second gear 34 is 1:1. As is clear from FIGS. 7 and 18, the second gear 34
Two stop bins 34a and 34b are installed protrudingly on the rear surface with a pitch of 180°, and one stop bin 34a passes through the second gear so as to also protrude from the front face of the second gear. ing. In addition, both stop bins 34a
, 34. b can be engaged with the right edge of a protrusion 39c protruding from the upper end of the rear end of the control plate 39. That is, the control plate 39 can also be moved forward by the two stop bins. Further, a pawl member 5171 and a spring portion 145 lb are provided near the second gear 34, and the second gear 34 is biased in one direction by the pawl member and spring member as shown in FIG. . As shown in FIG. 18, a moving plate 52 made of a steel plate is attached to the rear surface of the sub-chassis A so as to be able to reciprocate in the left-right direction. The right end of the moving plate 52 has a claw portion 52a that protrudes from the front surface of the second gear 3/I and can engage with the lug pin 3/Ia.
and 5211 are formed. The right edges of the claws 52at and L engage with the stop bin 3/Ia, and the left edge of the claw 5211 engages with the slot pin 34a. In other words, the moving plate 52
This means that the second tooth 34 rotates in one direction by 180 degrees. 'JJ Tsuruno deru. As shown in FIGS. 2, 3, and 9, a lever D53 formed in a substantially dogleg shape is disposed near the left end of the moving play 152. It is rotatably attached to one of the plates 3 and 3 at its central bend. Further, the lever D53 is click-biased by a spring 54 (see FIG. 3). Moving plate 52
The left end of the lever D53 is pivoted to the rear end of the lever D53. Further, the front end of the lever D53 is pivotally connected to the rear end of a slide member 56 (also shown in FIG. 5) provided on the head stand 47 so as to be able to reciprocate in the front-rear direction. As shown in FIGS. 2, 5, and 9, the magnetic head 49 is placed to the right of the slide member 56. As shown in FIGS. The magnetic head 49 has a bearing member 5 fixed on the head stand 47.
7, it is supported rotatably about an axis parallel to the moving direction of the head stand 47, that is, about an axis perpendicular to the magnetic tape contact surface of the magnetic head. The rotating shaft of the magnetic head 49 is made of die-cast alloy, whereas the material of the bearing member 57 that fits into the rotating shaft is glass! It is an IN-containing PPS resin. The angular position of the magnetic head 49 shown in FIG. 5 will be referred to as the first angular position of the magnetic head, and the position rotated by 180 degrees from the first angular position will be referred to as the second angular position of the magnetic head. , 1 magnetic head 49 is rotatable between the first angular position and the second angular position. A fan-shaped gear 59 is disposed at a position sandwiching the slide member 56 together with the bearing member 57, and is rotatably attached to the front end of the bearing member 57 in the main valve of the fan. However, the connecting parts of the fan-shaped gear 59 and the bearing member 57 should be made so that the reciprocating movement of the slide member 56 is not hindered.
The slide member 56 is provided with an elongated hole 56a extending in the front-rear direction and into which the coupling portion is loosely fitted. In addition, fan-shaped gear 5
9 is click-biased by a coil spring 60. A pin 59a is provided protruding from the right end surface of the fan-shaped gear 59, and the pin 59a is pivotally attached to the slide member 56. In other words, the fan-shaped gear 59 swings as the slide member 56 reciprocates. A gear portion of the fan-shaped gear 59 is meshed with a gear 61 coaxially fixed to the rotating shaft portion of the magnetic head 49. The above-mentioned second gear 34, moving plate 52, L collar D53, spring 54, slide member 56, etc.
A head rotation mechanism for rotationally driving the magnetic head 49 is composed of the bearing member 57, the fan-shaped gear 59, the coil spring 0, etc., the gear 61, and peripheral small members related thereto. Further, the head rotation mechanism and the above-described head stand drive mechanism are collectively referred to as a control mechanism. That is, the control mechanism causes the head stand 47 to reciprocate and causes the magnetic head 49 to rotate. As understood from the above explanation, the first gear 33 rotates 360 degrees, causing the head stand 4 to rotate.
7 performs forward and backward movement, and the second gear 34
By rotating 180 degrees, the magnetic head 49 rotates 180 degrees.
It is designed to rotate 80 degrees. Here, the azimuth adjustment means for regulating the angle of the magnetic head 49 will be explained. For example, as shown in FIGS. 5 and 9, the head stand/
A regulating member 64 extending in the front-rear direction is fixed to the I7-to so as to surround the magnetic head 49. The regulating member 64 is made of a rope plate and is flexible! [have. The regulating member 64 is formed symmetrically in the front-rear direction, and is fixed to the head stand 47 at its central portion.
Both front and rear ends extending in a U-shaped direction from the central portion can be engaged with the outer periphery of the magnetic head 49 . More specifically, both front and rear ends of the regulating member 64 are positioned so as to sandwich the magnetic head 49 from the front and back, and both ends are bent in a U-shape, and the lower side of the "-" shape is bent. Rotation of the magnetic head 49 is restricted by engaging with a protrusion 49a protruding from the outer periphery of the magnetic head 49. Note that an opening 64a is provided on one surface of the regulating member 64 so that the protrusion 49a of the magnetic head does not come into contact with the regulating member 64 when the magnetic head 49 rotates. A pair of screws 65 screwed into the head stand 47 are engaged with the necks E7 at both front and rear ends of the regulating member 64. Further, a pair of springs 66 are interposed between the lower surfaces of both front and rear ends of the regulating member 64 and the head stand /1.7 to apply a bias bias in the -L direction to both rear ends. However, only one spring 66 is shown in FIG. These screws 65 and springs 66 allow the regulating member 6
The positioning means for positioning both the front and rear ends of /4 is (1
4 has been completed. Moreover, the positioning means and the regulating member 64
The azimuth adjustment means is constituted by these. That is, by tightening or loosening the pair of screws 65, tJ is applied to the two angular positions of the magnetic head 49.
The structure allows angle adjustment to be performed individually. Note that the same effect can be obtained by dividing the regulating member 64 at its medium heat portion to form two members, and fixing each member in a τ cantilever shape to the head stand 47 directly above the magnetic head 49. 19. However, by making the above-mentioned regulating member a 171-member having a front-back symmetrical shape, the number of parts is reduced and the number of assembly steps is also reduced, contributing to cost reduction. The story goes back and forth, but for example, as shown in FIG. 18, the first gear 33 has two toothless parts 33c and 33 [1] symmetrically with respect to a partial tooth part 33b having approximately three teeth. It is preached-C. When the first gear 33 is in a stationary state before operation, the toothless portion 33c is connected to the gear 16 (gear transmission mechanism 20).
(Part of) is supported, and the start 1-
The partial tooth portion 33b is prevented from biting into the gear 16 by the reglever. On the other hand, the second tooth width 34 also has 18
Two toothless parts 34c and 34d are formed with a bit of 0°, and when the second gear is in the operating and static state, the toothless part 34G is connected to the gear 18 (gear transmission mechanism 2).
0), and the rotation of the second gear is regulated so that the right southern part does not enter the gear 18, as will be described later. Next, when the first gear 33 and the second gear 34 rotate, the first gear 33 meshes with the gear 16, and then the second gear 34 meshes with the gear 18. Explanation of the trigger means 1-1. As is clear from FIG. 4, at the rear end of the control plate 39,
A regulating portion 39d is formed that engages with the stop pins 34a, 3411 of the second gear 34 to regulate rotation of the second gear when the control plate is not at the most backward movement position (rightward movement limit position). has been done. As shown in FIGS. 2, 4, and 17, a prohibition lever 69 is arranged on the left side of the control plate 39, and one prohibition lever 69 is attached to the rear end bent portion 3a of the chassis 3 at its lower end. It is attached so that it can swing freely. An engagement recess 69a is formed in the 11-nireper 69 so as to protrude from the front surface of the central portion of the control plate 39 and can be engaged with the IC pin 39c. Further, the inhibiting lever 69 is biased by a coil spring 70 in the direction shown in FIG. A prohibition means is configured to prohibit the control board from backward movement (movement to the right) once the forward movement position (leftward movement limit position) is reached.On the other hand, as is particularly clear from FIG. , an engagement protrusion 69b formed on the prohibition lever 69 is provided on the outer periphery of the first gear 33.
A protrusion 33f that can be engaged with is formed. That is, the first
At the time of initial movement of the wheel 33, the projection 33f of the first gear engages with the engagement projection 69b, and the prohibition lever 69 swings in the opposite direction in FIG. The 11-state, which prevents backward movement, is released. The above-described inhibiting means (consisting of the inhibiting lever 69, etc.), the control plate 39, the 'X1 illumination spring 40 as a biasing means for biasing the control plate in the reverse direction (to the right), and the first gear The partial tooth portion 33b of the gear 16 (gear transmission mechanism 20
The gear spring 35 (as a biasing means for biasing the first gear in the direction of meshing with the gear 18 (a part of the gear transmission mechanism 20) and the toothed part of the second gear 34 The claw member 51a and the spring portion +451a, which act as a biasing means for biasing the second gear F' in the meshing direction, and the peripheral small members related thereto, cause the first gear 33 and the second tooth width to be 3
Trigger means is configured to engage the second gear 34 with the gear 18 after the first gear 33 has engaged with the gear 16 when the gear 4 starts rotating. As shown in FIGS. 2, 7, 9, and 18, a trident-shaped start trigger lever 73 is rotatable at the center of the rib chassis A11. Fj-4 was taken. As is clear from FIGS. 7 and 18, one end 73a of the start 1 helical lever 73 is bent rearward at right angles, and the bent portion engages with the first tooth I33. Noh is shouting. More specifically, the pin 33a protruding from the rear surface of the first gear 33 passes through the first gear and protrudes by a predetermined amount from the front surface of the first gear. - One end 73a of the rig lever 73 is adapted to engage with this portion protruding from the front, thereby restricting the rotation of the first gear 33. A second end portion 7 formed on the start trigger lever 73 and extending to the right.
3b engages with the left end of the lever A12 from the lower surface of the left end. That is, the second end 73b of the start 1 to trigger lever 73 is engaged with the end detection lever 10 via the lever Δ12, and the end detection lever 10 is engaged with the end detection lever 10 via the lever Δ12.
0 moves upward to move the trigger lever to star 1.
73 rotates clockwise in FIG.
The rotation restriction state No. 3 is released. The start trigger lever 73 has a third end 73c extending downward, and the third end engages with the left end of the magnetic head switching command rod 75 shown in FIG. The magnetic head switching command rod 75 is attached to the lower surface of the chassis 3 so as to be able to reciprocate in the left and right directions, and is made of a steel plate and has an L-shape as a whole. That is, by moving the magnetic head switching command rod 75 to the left, the start trigger lever 7
3 is configured to rotate in the t1 direction when pulled (as shown in FIG. 18).Also, as shown in FIG. 10, there is a star 1 near the head switching command rod 75. A coil spring 6 is disposed at the third end 73c of the lever 73 to give a rightward swing. An electromagnetic solenoid 77 is disposed in the vicinity extending left and right, and is fixed on the chassis 3.A movable long door 7a of the electromagnetic solenoid 77 protrudes to the right with respect to the solenoid body, and is fixed on the chassis 3. A bottle 77b extending in the vertical direction is fitted into the tip of the rond.The lower end of the bottle 77b is loosely fitted into an elongated hole 3G formed on the main surface of the chassis 3 and extending in the left-right direction.
The magnetic head switching command [1] is engaged with the right end of the magnetic head switching command [1]. That is, the movable part 77 of the electromagnetic solenoid 77
When a is pulled, the magnetic head switching command rod 7
5 moves to the left (therefore, to star) 1 to rig lever 7
3 rotates clockwise in FIG. 18). Further, as shown in FIG. 1, an operation switch group 79 is arranged on the front surface of the housing 2 and to the right of the opening 2a, and one switch of the operation switch group is connected to the electromagnetic solenoid. This is a command switch for operating 77. As shown in FIG. 2, FIG. 4, FIG. 10, and FIG. 17, the rear end bent portion 3a of the chassis 3 has the control plate 39 attached
A moving member 81 is mounted on the front surface of the control plate so as to be movable in the same direction as the control plate, that is, in the left-right direction. This moving member 81 is arranged at a position where it is sandwiched between the bending portion 3a and the control plate 39. A projection 81a is provided at the upper end of the left end of the moving member 81, and the pin 33a of the first gear 33 engages with the right edge of the projection 1q. That is, the moving member 81 moves to the left together with the control plate 39 as the first +tj wheel 33 rotates. A coil spring 82 is connected to the right end of the movable member 81 for causing the movable member to swing to the right. As is particularly clear from FIG. 3, a T-shaped lever 383 is disposed on the right side of the movable member 81, and a lever 383 is disposed on the right side of the movable member 81, and a lever 383 is disposed on the right side of the movable member 81. It is rotatably attached to the rear end bent portion 3a (1). Lever] 383
The first end portion 83a formed in the movable member 8 and extending downward is
1 via a second spring 84. 41, when the moving member 81 moves to the left, the lever 83 rotates in the direction shown in FIG. 17. A bottle 83c that extends forward is protruded from the tip of the second end 83b that extends in the opposite direction. As long as the pin 83c is engaged with the recess 39h, the control plate 39 can be moved to its most backward movement position (rightward movement limit position). , when the bottle 83C is engaged with the convex portion 390, the return of the control plate 39 to the most backward movement position is restricted.As mentioned above, when the control plate 39 is not in the most backward movement position, the control plate 39 is prevented from returning to the most backward movement position. A regulating portion 39d formed on the plate engages with the stop pins 34a and 34b of the second gear 34, thereby regulating the rotation of the second gear. FIGS. 2, 3, 9, and 17 As shown in the figure, another electromagnetic solenoid 86 is arranged above the electromagnetic solenoid 77 in parallel with the electromagnetic solenoid, and
It is fixed on the chassis 3. This electromagnetic solenoid 8
The movable rod 86a of No. 6 protrudes leftward with respect to the solenoid main body, and a pin 86b extending in the front-rear direction is fitted at the tip of the movable rod. This bottle 86b is
a third end 8 formed on the lever E83 and extending upward;
It is pivotally attached to the tip of 3d. In addition, the movable rod 86
The pin 83C of the lever E83 engages with the protrusion 39o at the rear end of the control plate 39 when the lever E83 is in its protruding position (the position shown in FIG. 17). The electromagnetic solenoid 86 is activated by operating the key of the automobile in which the cassette deck is mounted, and when the key is in the on state, the movable rod 86 of the electromagnetic solenoid 86 is activated.
a is pulled in as the movable member 81 moves to the left and is fixed at the retracted position, so that the pin 830 of the lever E83 engages with the rear end recess 39h of the control plate 39. There is. Furthermore, when the four knees are turned off, the movable rod 86a is pulled out by the biasing force of the coil spring 82 that biases the movable member 81 to the right, so that the pin 83C of the lever E83 is moved from the control plate 39. It engages with the rear end protrusion 39o. The above-mentioned moving member 81, coil spring 82, lever E83, coil spring 84, electromagnetic solenoid 86, and surrounding small members related to these move the control plate 39 to the maximum return position when the power is turned off. A prohibition/cancellation means is configured that prohibits return to the rightward movement limit position and cancels the prohibition when the power is turned on. Next, a tape transport direction switching means for switching the transport direction of the magnetic tape will be explained. As shown in FIGS. 2, 3, and 9, the shaft member 30a of the support lever 30--30 that rotatably holds the idler gear 28 is a capstan. Note that, as shown in FIG. 10, this shaft member 30a also serves as a rotational support shaft for the flywheel 27. On the other hand, as is particularly clear from FIGS. 3 and 5, a pair of support shafts 89 extending upward is provided on the chassis 3 in the vicinity of the capstan 30a. An arm member 91 to which a pinch roller 90 is rotatably attached is rotatably attached to the free end thereof. The pair of pinch rollers 90 are each detachable from the capstan 30a. A bottle 91a that vertically passes through the arm member 91 is fixed to the free end of the arm member 91, and a spring 66 (for adjusting the azimuth of the magnetic head 49) is attached to the lower end of the left edge of the bottle. For example, see FIG. 5) is engaged at one end. Arm member 91
The pinch roller 90 is biased in a direction (J) toward the capstan 30a by the spring 66. The capstan 30a described above and the pinch roller 90 are
The reel units 1 to 5, the idler gear 28, and the peripheral small members related thereto are J: 2 of the magnetic head 49.
A tape transport direction switching means is configured to determine a tape transport direction corresponding to the two rotational angular positions. Each bottle 91a provided at the tip of the arm member 91
The upper end of the slide member 56 can engage the front and rear ends of the slide member 56. More specifically, two notches 56 are formed at the front end and the rear end of the slide member 56, each extending in the front-rear direction and having open ends facing each other.
C, and either one of the pins 91a of the arm member 91 can be selectively engaged in the notch 56C as the slide member 56 reciprocates. A tapered portion 56 (l) is formed at the front edge of the open end of each notch 56C, and the bottle 91a is smoothly guided into the notch 56c by this tapered portion 56d. By engaging with the notch 56G, the arm member 91 rotates to the left by a predetermined amount, and the pinch roller 90 is separated from the capstan 30a. That is, the pair of pinch rollers 90
Alternatively, the 4-17 pushbutton 3
From 0a to M, it is possible to get rid of M. As is particularly clear from FIG. 5, mountain-shaped protrusions 47a are formed at both left and right ends of the head stand 47 that supports the slide member 56 so that the pointed portions thereof face each other. Further, on the left side of the protrusion 47a, there is a four part 47 continuous to the protrusion.
b is formed. These protrusions 47a and recesses 4.7b are adapted to engage with a pin 30d protruding from one swinging end of the support lever 30 shown in FIG. 3, for example, when the head stand 47 moves to the right. ing. When the mountain-shaped protrusion 47a engages with the bin 30d, the support lever 30 swings in the direction in which the idler gear 28 attached to the support lever separates from the double gear 5f of the reel unit 5, and When the concave portion 47b engages with the bin 30d following the protrusion 47a, the support lever 30 returns to the position where the idler gear 28 meshes with the double gear 5''. , when the head stand 47 moves to the right, the pair of front and rear support levers 3
A protrusion 56c is formed that engages with one of the bins 30 (1) to prevent the bin from entering the four parts 471 of the head stand 47. However, each protrusion 56e
As the slide member 56 moves forward and backward, C1 engages with only one of the rear of the pair of bins 30 (1).In other words, the pair of idler gears 28 engage with only one of the rear of the pair of bins 30 (1). The reel unit is configured to be selectively removed from the reel unit by the reciprocating movement of the slide member 56.Next, the mechanism for loading and covering the reel unit will be explained. , as shown in FIGS. 6 and 12 to 14, a subchassis 895 is provided on the upper surface of the right end of the chassis 3.
is permanently installed. Chassis 30 has sideways in the left and right direction.
- A swinging member A96 is arranged, with H two ribs 1
1-B95 and the support protrusion 3d provided on the left rear end of the chassis
It is swingably attached at the end. A cullet 1 to a holder 98 for holding a cullet half are provided at the free end, that is, the front end, of the swinging member A96 so as to be able to swing freely at the center in the front-rear direction. Note that, for example, the positions of the cassette holder 1 to the holder 98 shown in FIG. 5 are referred to as the raised position of the cassette holder. The cassette half is inserted into the cassette holder 98 in this position from the direction of arrow S and held in the cassette holder. Also,
From this state, the swinging member 96 swings downward by a predetermined angle, and the cassette half held in the cassette holder 98 is positioned at the playing position.
The position 8 is referred to as the lowered position of the curfew 1 to holder. The cassette holder 98 is movable between this lowered position and the above-mentioned raised position. On the lower surface of the cassette holder 98, there is a movable member 101 which is made up of two members, an upper surface member 99 and a right surface member 100, and which can engage with the caret (~half), and is movable in the insertion and ejection direction of the caret (=7), that is, in the front-rear direction. 1 on the right side of the bottle 100a.
is provided protrudingly, and the bottle is slidably fitted into a long hole 95a formed in the leaf chassis B95 and extending in the front-rear direction. On the other hand, a lever F1 is located at the lower center end of the Zabu chassis 95.
02 is swingably mounted at its lower end, and the upper end of the tray F is pivoted to the bottle 100a. The lever F102 is attached to the lever F as shown in FIG.
Therefore, the force is applied to the moving member 101 in the half direction, that is, in the forward direction! A coil spring 103 that is Ej is connected. At the front end of the right side member 100, a concave portion 100b that sinks downward is formed.
Then, the swinging support shaft 98a of the cassette holder 98 falls into this fourth part 100b, and the cullet holder moves to the lowered position. A coil spring 104 is connected for biasing the swinging member in the direction 81 in FIG. 13. Note that by moving the moving member 101 backward in the cassette half insertion direction, the cassette holder 98 is urged by the coil spring 103 toward the lowered position. As is clear from FIGS. 12 and 14, the moving member 10
The upper surface member 99 of 1 is provided with a projection 99c that faces the reel hole 106 of the cassette half to be inserted, and a spring member 99 (1) that biases the cassette half so that the projection 99C projects into the reel hole 106. Note that the protrusion 99C is formed integrally with the upper surface member 99 by punching or the like.By forming the protrusion 99c integrally with the upper surface member 99 in this way, the protrusion can be provided. Therefore, it is no longer necessary to attach special parts to the upper surface member 99, and the number of parts and the number of man-hours for installation are reduced, leading to cost reduction. Another protrusion 99e that engages with the half is formed. Like the protrusion 99C described above, this protrusion 99e is also integrally formed on the upper surface member 99 by stamping or the like, and this reduces the cost for the same reason as above. The protrusion 99e is engaged with four parts 107 called label areas formed on the cassette half.In this way, the protrusion 99e is engaged with the four parts 107 formed on the cassette half. By engaging, the protrusion 99
This makes the suspension state of the cassette half c firmly fixed. In the cassette deck, the cassette half is inserted into the cullet holder 98 along its longitudinal direction. Further, the aforementioned control III mechanism, that is, a control mechanism for reciprocating the head stand 47 and rotating the magnetic head 49 is arranged near the deepest part of the force e-t holder 98. Next, F [operation (tape fast forward operation), REW operation (
The mechanism for performing the tape rewinding operation will be explained. As shown in FIGS. 2, 3, 9, and 16, the left end of the chassis 3 is bent upward, and the bent portion 3f is A rib 17-shi C111 also shown in FIG. 15 is fixed. The ribbed V-shield C111 is provided with a pair of longitudinal operating levers 113 and 114 that extend in the front-rear direction and are vertically stacked so as to be able to reciprocate in the front-rear direction. The front end portions of the longitudinal operation levers, that is, the operation end portions, are separated by a predetermined distance to the left and right, and each operation end portion has an operation button 115, 116 (
(shown in Figure 1) is removed. The longitudinal operation lever 113 placed at the bottom is used to perform the FF operation by its forward movement, that is, backward movement, and the longitudinal operation lever 113 placed at the top (
) The longitudinal operating levers 114 are used to perform the REW operation in their forward movement.
13 and 114 are arranged above the magnetic head 49. Also, both branch hand control levers 113. "j14 is given a forward bias by coil springs 118 and 119. As is particularly clear from FIG. 7 and FIG. , a longitudinal pin protruding from the -1 end of the -1- surface of the head stand 47] 21.
Tapered portion 113a that engages 1q when moving to
, 1171a are formed. 'IJ- That is, by pressing either of the manual levers 113 and 114 while the head stand 47 is moving to the right, the head stand 47 is moved to the left by a predetermined amount, and this As a result, the magnetic head 49 is separated from the magnetic tape. Furthermore, when the head stand 47 is thus moved to the left by a predetermined amount by operating the longitudinal operation lever, the protrusion 4.78 formed on the head stand 47 moves towards the support lever 30 that holds the idler gear 28. 30+1, thereby causing the idler gear 28 to disengage from the double gear 5 of the reels 1 to 5. The story goes back and forth, but for example, as shown in FIGS. When the head stand 47 moves, the right end of the head stand 47 engages with the claw member 123 and pushes it open, so that the reverse rotation prevention state of the reel unit 5 by the claw member is released. Returning to the original topic, the bent portion 3 formed at the left end of the chassis 3 as shown in FIGS.
A plate (124) is attached to the right side of the rear end so as to be movable in the front and back direction.Plate 12
A coil spring 125 is connected to the beam origin 124a at one end of the plate 124 to give a forward bias to the play 1.The front end of the plate 124 has a lever formed in a T-shape. -1126 is rotatably attached to the central part of the lever H126.As is particularly clear from FIG. A protrusion 113C extending downward and protruding from the longitudinal operation lever 113
The trailing edges of the two are brought into contact. Also, Levert 112
The rear edge of a protrusion 114G extending substantially leftward and protruding from the other longitudinal operation lever 114 is brought into contact with the front edge of the second end 126b formed at 6 and extending upward. . That is, by pressing the longitudinal operating levers 113 and 114, respectively, the lever 1-1126 is rotated counterclockwise and clockwise as shown in FIG. A lever 1129 formed in a substantially dogleg shape is arranged in the lever 1129, and one lever 1129 is rotated at the external force bending part 3 of the chassis 3 at the central bending part. There is. At the tip of the first end 129a formed on the lever 1129 and extending rearward (,■ pin 12
91 is provided with a protruding groove C, and this pin 12911 is formed on the lever 1-1126 and extends forward by n.
It is rotatably fitted into a long hole 126[+ formed in 26G. Also, the second end 129C of the lever 1129 extends downward. As shown in FIGS. 2, 3, 10 and 16, respectively - the phantom reel unit 5 and the flywheel 2.
A swinging lever 130 is disposed extending from side to side at a position sandwiched between the seats 7 and 7, and is swingably attached to the seat 3 via a pin 130a at a substantially central portion thereof. The left end of the swinging lever 130 is the second end 1 of the lever ■129.
It is pivotally attached to the tip of the 29G. Also, a gear transmission mechanism 135 consisting of three gears 132, 133 and 134 meshing in series is provided on the lower surface of the right end of the swing lever 130.
is provided. The gear 132, which is the first gear of the gear transmission mechanism, is connected to each gear portion 27a of the pair of flywheels 27.
The gear 134, which is the final stage gear, is configured to mesh with a small diameter gear portion formed on the double gear 5f of the reel unit 5. Zunawara. -V
When the longitudinal operation levers 113 and 114 are pressed, the swing lever 130 is activated via the lever 1-1126.
is swung backward and forward, whereby the reel units 5 disposed at the rear and front are selectively rotated at high speed. As shown in FIG. 2, FIG. 7, FIG. 15, and FIG. In addition, an intermediate lever 138 is provided which is capable of reciprocating in the direction of movement (back and forth direction) of the both arm operating levers. A coil spring 139 is connected to the intermediate lever 138 to apply a forward bias to the intermediate lever. As is particularly clear from FIG. 15, a pin 138 is provided on the lower surface of the rear end of the intermediate lever 138.
A is provided protrudingly, and the pin is slidably engaged in a long hole 140 corresponding to the pin and formed in the τ longitudinal operation levers 113, 114 in the front-rear direction. On the right end side of the central part of the elongated hole 140, there is a four part 140 into which the pin 138a can be inserted.
a is formed. Here, the intermediate lever 138 can swing by a predetermined angle about a support shaft 1381 on its front end side. In addition, a coil spring 139 that pushes the intermediate lever 138 forward (d) is tensioned so as to be inclined to the right from the rear to the front.
14 in the counter-time direction (numbered as shown in Figure 15) with 1 as the center.
Forced. That is, both branch hand operation levers 113,1
14 are simultaneously moved forward (move backward) U, the pin 138a of the intermediate lever 138 moves into the recess 1 of the elongated hole 140.
40a so that the intermediate lever 138 moves rearward. However, if only one of the pair of longitudinal operating levers 113, 114 is moved forward and only Ic is moved, the rear right edge 140b of the long hole 140 formed in the other longitudinal operating lever still contacts the pin 138a. Therefore, the intermediate lever 138 does not move forward (move backward). Although not detailed, the longitudinal operation lever 1 for FF operation
A mechanism is provided for locking either one of the longitudinal operating levers 13 and 114 in the forward movement position when the longitudinal operating lever is moved forward. Further, the locking mechanism locks the longitudinal operating lever in the forward movement position as soon as the other longitudinal operating lever is moved forward;
B. Stroke to release the lock on one of the longitudinal control levers above. Furthermore, when either of the longitudinal operation levers 113 or 114 is pressed, the lever J142 arranged at the rear of the two arm operation levers is swung in the direction K] in FIG. ~Switch 1/I3 is activated J: It is activated. For example, as shown in FIGS. 2 and 7, a pin 138 (1) is protruded from the upper surface of the rear end of the intermediate lever 138, and the pin is connected to the swinging member 96 (for example, shown in FIG. 6).
directly engages with the left end portion 96a of 1q. This intermediate lever 138 is a lever for pressing the swinging member 96 rearward by moving, and moving the cullet boulder 98 in the above-mentioned lowering device to the raised position. Next, various switches provided in addition to the mute switch 143 and their arrangement will be explained. @ As is clear from Figures 2 and 6, Sable 11-
A bracket 146 is attached to the right end surface of the switch E195, and two switches 147, 1 are attached to the bracket.
48 has been installed and screwed in once. The switch 147 is used to turn off the power to the cassette deck and the tuner disposed near the deck 1 to the deck. In addition, the switch 148
b to avoid operating the motor 27I. Both switches 147 and 148 are mechanically actuated upon insertion of the cassette half into the cassette holder 9B. As shown in FIGS. 2, 7, and 18, a switch 149 for switching between [F and RFW is fixedly installed on the front surface of the left end of the sub-chassis A11. This switch 149 is operated when the member 52 engages with the movable play 1 attached to the rib chassis 1ν-A.Also, as shown in FIG.
A switch 150 for cutting off power supply to the cassette deck is fixed on the top, and this switch operates when the intermediate lever 138 is moved forward (moved backward). The operation of the cassette deck configured as described above will be briefly explained along the operating procedure with reference to FIGS. 19 to 26. First, insert the cassette half 155 (shown in FIG. 19) from the space [ ] 2a of the housing 2 shown in FIG.
The cassette half is held in a cullet holder 98 as shown in FIGS. 9 to 21. As shown in FIG. 20, the cassette half 155 is attached to the cullet holder 9.
8, the right side member 100 moves rearward, and as a result, the swinging support shaft 98a of the cullet holder 98 falls into the recess 100b of the right side part 100, and the force 1! The parts 1 to 1 are moved to the lowered position. Therefore, the cassette half is placed in the playing position. With this half-insertion operation into the cap 1, switches 147 and 148 shown in FIG. 6 are operated, for example.
Power is turned on to the cylinders 1 to 1, and the motor 24 starts rotating. As the motor 24 rotates, the first
As shown in Figure 0, the small pulley 24a moves in the direction of arrow M.
Further, the pulley 23 is rotated in the direction of the arrow EllN, and furthermore, the pair of front and rear flywheels are rotated in the directions of the arrows O and P. i, t, 5 are sent to the pair of reel units 1 through the pair of idler gears 28 in the directions of arrows Q and R, respectively (
10), the rotation begins. In this way, since the pair of reel units 5 rotate in the relative directions, slack in the magnetic tape in the cassette half 155 is wound up. When the slack in the magnetic tape is wound up and a predetermined tension is applied to the magnetic tape, all of the components of the reel unit 5 shown in FIG. 11 except for the double gear 5f react to the tension. They are fixed by force, and only the double gear 5f continues to idle with respect to these fixed members via the felt plate 5h. Therefore,
The magnetic tape is not transported with the above tension applied to it. On the other hand, the end detection gear 14 shown in FIGS. 7 and 18, for example, is activated by the rotation of the motor 24, and
0 in the counterclockwise direction in FIG. Therefore, the bin 10b protruding from the end detection lever 10 is moved to the top of the mountain-like protrusion 14b of the end detection gear 14 as the end detection gear 14 rotates. Here, as is clear from the above, the arm 51 of each reel unit t'' 5 is stopped. Therefore, the intermediate lever 7 is not operating, and the end detection lever 10 is Therefore, the bottle 1011 of the end detection lever 10 remains at the top position of the 111-shaped protrusion 14b, and J, the end detection The protrusion 14C of the gear 14 engages with the bin 10 (). Therefore, the end detection lever 10
moves upward and moves to star 1~1~ via lever A12.
The trigger lever 73 rotates in the 1st direction as shown in FIG. In this way, the first gear 33, which had been restricted from rotating due to the engagement of the pin 33a with one end of the start 1 rib 73, is now able to rotate, and the coil spring 35 is freed from its rotation. J is rotated once in the direction δi in FIG. 18. Therefore, the partial tooth portion 33b of the first gear 33 meshes with the gear 16, and the first gear begins to rotate. By the rotation of the first gear 33, the control plate 39 shown in FIG. 17 etc. is moved to the left, and therefore the head stand 47 is moved to the right as shown in FIG.
The magnetic head 49 comes into contact with the magnetic tape. When the control plate 39 reaches the maximum forward movement position (the leftward movement limit position), the control plate 39 stops its return movement ( movement to the right) is prohibited. As the first gear 33 rotates, the moving member 81 shown in FIG. 17 is also moved to the left as shown in FIG. 23. Therefore, the lever E83 rotates clockwise as shown in FIG. 23, and the movable rod 8 of the electromagnetic solenoid 86 is already in the on state.
6a is pushed in. This action causes lever E83 to
A bin 83c is formed at the right end of the three control plates.
9h, therefore, the control plate 39 can be moved to the most backward movement position (rightward movement limit position). Further, the control plate 3 is located in the engagement recess 6'9a of the prohibition lever 69.
By entering the bottle 39e of No. 9, the prohibition lever 6
One rotates a predetermined amount () in the hour h1 direction as shown in Fig.
The Micoat switch 143, which had been in the on state via the switch (see figure), is turned off. On the other hand, as shown in FIG. 22, as the stand 47 moves to the right, the front idler gear or the double gear 5f of the front reel unit 5 is separated, and the rear reel is separated. Only the unit 5 is rotated. This operation depends on the interaction between the protrusion 47a and recess 47b formed on the head stand 47 and the protrusion 56e provided on the slide part vJ56, Since I have explained the configuration in detail in the previous explanation, I will not explain it in detail here.Also, as shown in FIG. The other, that is, the front pinch roller 90 is held in a tubular state with its corresponding capstan. 5
J is fitted into the notch 56c of No.6. Similarly, as shown in FIG. 22, as the head stand 47 moves to the right, the pair of claw members 123 that had been engaged with the reel units 1 to 5 move from the reel units l1uf tBI.
l! L, I'm disappointed. In this way, tape transport to the FWD side is started, and reproduction on the FWD side is performed. Next, the operation of switching from FWD side regeneration to RFV side regeneration will be explained. When the switch for switching the tape transport direction is pressed, the electromagnetic solenoid 77 is turned on, and the movable head 77a of the electromagnetic solenoid is pulled. Therefore, the start trigger lever 73 is rotated in the 11 direction in FIG. 18 via the magnetic head switching command rod 75. As a result, the No. 1 wheel 33 whose rotation was restricted by the start trigger lever becomes rotatable, and is rotated clockwise in FIG. 18 by the force of the coil spring 35. The partial tooth portion 33b of the first gear 33 meshes with the gear 16, and the first gear begins to rotate. Immediately after the first gear 33 starts rotating, the protrusion 33f protruding from the first gear engages the prohibition lever 69 ( (See Figure 17)
is engaged with the engagement protrusion 691) to rotate the inhibiting lever in the counterclockwise direction 81 as shown in FIG. Then, the engagement state between the engagement recess 69a of the prohibition lever and the pin 39e of the control plate 39 is released, and the control plate 39 is instantly moved to the most backward position (in the right direction) by the force 61 of the coil spring 40. It is returned to the movement limit position). When the control board 39 returns to the most backward movement position 16, the head stand 47 moves to the left, and the magnetic head 49 is separated from the magnetic tape. When the control plate 39 is at the most forward movement position (leftward movement limit position), the stop bin 34a is engaged with the regulating portion 39 (1 (for example, shown in the fourth figure) formed on the control plate,
Rotation of the second gear 34 is restricted. This restriction is canceled by returning the flil+ control plate 39 to the above-mentioned maximum return position, and for example, the claw portion 4451 a shown in FIG.
By the action of the spring Ei 111, the second gear 34 is rotated μ in the direction 81 as shown in FIG. J, the right tooth of the second gear 34 meshes with the gear 18, and the second gear begins to rotate. As the second gear 34 rotates, the stop bin 3zl protrudes from the second gear 34.
a engages with the claw portion 52a of the movable plate 52, the movable plate 1 is moved to the left, and the magnetic head 49 connected to the movable plate is rotated 180° toward the REV side. Further, by moving the moving plate 52 leftward, the switch 149 is switched from the FWD side to the REV side. Due to the above rotation of the second gear 34, the stop pin 34a of the second gear 34a is stopped by a protrusion 39C (
17 etc.), and the control plate is moved to the left by a predetermined distance by the stop bin. When the second gear 34 completes 180° rotation, the stop bin 3
4a is separated from the protrusion 39c of the control plate 39, and then the pin 33 of the first gear 33. 'l engages with the protrusion 39a of the control plate 39, and the control plate 39 is moved to the forward movement position (leftward movement limit position) and locked by the inhibition lever 69 as described above. As the control plate 39 moves forward, the head stand 47 moves to the right again, and the magnetic head 49 comes into contact with the magnetic tape. Also,
Mute switch 1/I3 is also turned off in the same manner as described above. Further, the slide member 56 is moved forward by the leftward movement of the moving plate 52 described in -1-, and thereby the head stand 47 is moved rightward and the rear idler gear 28 is moved forward.
The idler gear 28 in front of the reel unit 5 is engaged with the reel unit 5, and only the reel units 1 to 5 on the first side start rotating. Also, the front pinch roller 90 is connected to the capstan 30.
a, and the rear pinch roller 90 is held in a state separated from the capstan 30a. Thus, the tape transport direction is switched from the FWD side to the REV side. For the operation of switching from the REV side to the [W[] side, the stop bin 34 of the second gear 34
1] is the claw portion 521 of the moving plate 52] (as shown in Figure 18)
With the exception of the point where the moving plate is moved to the right by engaging with the moving plate, the operation is substantially the same as the above-mentioned tape transporting operation from the FWD side to the REV side, and will not be described in detail. Next, the operation of the mechanism for automatically switching the tape transport direction will be described. For example, when tape feeding to the FWD side is completed, a predetermined tension is applied to the magnetic tape at the end, and all of the components of the reel unit 5 shown in FIG. 11 except for the double gear 5 The shape is fixed by the reaction force of the tension. Therefore, only the double gear 5t continues to idle with respect to these fixed members via the felt plate 5h. When the tape is being fed to the FWD side, -
The above-mentioned fixed members group are also rotating except for the arm member 51. Also, arm member 5! receives a biasing force caused by rotational force, and biases the intermediate lever 7 via the floating lever 8 in the counterclockwise direction in FIG. As a result, the end detection lever 10, to which the rear end of the intermediate lever is pivoted, is rotated counterclockwise in FIG. 3. The pin 1011 moves while abutting against the mountain-like protrusion 14b of the gear 14, and the protrusion 14c of the end detection gear does not engage with the pin 1011.3. However, the reel l chive h F
Back side of + double gear 5 ``Parts RY except tape P?1
When the above-mentioned −L land detection lever 1 is fixed at 1 and 3,
0 also disappears, and the protrusion 1 of the end detection gear 14
4 Ch' Engages with the engine 1~bin 101 of the detection lever. Therefore, move the end detection lever 10 toward F,
The star mill trigger lever 73 is rotated in the hIh direction in FIG. 18 via the lever A12. Next, press the switch mentioned above. 1. The tape transport direction is switched by exactly the same operation as switching the tape transport direction from the FWD side to the R[y side. In addition, REV
The automatic switching of the tape transport direction from the side to the FWI) side is described in the same way as the operations described above, and will not be described in detail. Next, F [movement (tape fast forward motion) and R[W motion (
(tape rewinding operation) will be explained. For example, when performing the F operation during tape playback, as shown in FIGS. Switch to mu 1
43° is in the on state. Further, the longitudinal bin 121 protruding from the left end of the head stand 47 is suppressed to the left by the tapered portion 113a of the longitudinal operation lever 113, and as a result, the head stand/I7 moves to the left by a predetermined distance. , the contact between the magnetic head 49 and the magnetic tape is loosened. As is clear from FIG. 25, by the backward movement of the longitudinal operating lever 113, the lever 1-1126, which engages with the protrusion 113C of the longitudinal operating lever, moves in the opposite direction in FIG.
[It is made to swing in the direction.] Therefore, the lever 1129 similarly swings in the direction shown in FIG. Rotate to. Therefore, the first gear 132 of the gear transmission mechanism 135 provided on the swing lever is connected to the rear flywheel 2.
Further, the final stage gear 134 meshes with the small diameter gear portion of the double gear 5f of the rear reel unit 5. On the other hand, by moving the head stand 47 to the left by pushing the longitudinal operation lever 113, the pair of idler gears 28 are moved Mill IIR from the reel unit 5. Therefore, the rear glue unit 1-5 rotates at high speed, and the tape 41! The sending is done. When performing the RFW operation, this is done by pushing the REW operation longitudinal control lever 114. Of course, the protrusion 114C of the longitudinal operation lever 114
26, and when the lever 1-1 is in position C in FIG. It meshes with the flywheel 27 and reel unit. Note that the leftward movement of the head stand 47 is performed using the longitudinal operation lever 11.
This is achieved by the tapered portion 114a of No. 4 engaging with a longitudinal pin 121 provided on the head stand 47. To eject the cassette half after tape playback is complete, press the FF operation longitudinal operation lever 113 and the REW operation operation longitudinal operation lever 114 at the same time.Press the two longitudinal operation levers at the same time. As a result, the intermediate lever 138 (for example, shown in FIG. 24) moves rearward, and the pin 138d protruding from the upper surface of the rear end of the intermediate lever engages with the left end of the swinging member 96 (for example, shown in FIG. 6). Therefore, the cassette half 155 is protruded to the retrieval position by the listener by a completely reverse operation when loading the cassette half 155. Also, since the switch 150 shown in FIG. 24 is also operated, the electromagnetic solenoid 86 ( 2
3) is turned off, and the lever E83 is returned to the state shown in FIG. 17 by the action of the coil spring 82. Therefore, the pin 83c provided on the lever E83 can engage with the protrusion 39o formed on the right end of the control plate 39. As a result, the return of the control plate 39 to its most backward movement position (rightward movement limit position) is prohibited. That is, the 71-tube pin 34 of the second gear 34. a
is maintained engaged with the regulating portion 39d of the control plate 39, and when the power is turned on again, the second gear 34
This prevents the tape from rotating, thereby preventing unnecessary switching of the tape transport direction. As mentioned above, the above-mentioned turning off operation of the electromagnetic solenoid 86 is also performed when the key of the automobile in which the cassette deck is mounted is turned off. Effects of the Invention As described in detail above, in the cassette deck according to the present invention, the azimuth adjustment mechanism for adjusting the azimuth of the rotating magnetic head (49) is provided symmetrically on the head stand, and each end is connected to the magnetic head. The other end portions fixed to the head stand substantially directly above and extending in directions away from each other engage with the outer periphery of the magnetic head at positions that sandwich the magnetic head, thereby rotating the magnetic head. A flexible regulating member (6
4), and a positioning means (screw 65 and spring 66) that engages with and positions the other end of the regulating member.
). In the azimuth adjustment mechanism configured in this way, the rotating magnetic head and the screw as the positioning means do not come into direct contact with each other, and there is no problem in azimuth adjustment due to wear of both. First, the azimuth adjustment state once adjusted is maintained.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a cassette deck according to the present invention, FIG. 2 is an exploded perspective view of the internal structure of the cassette deck, and FIGS. 3 to 8 are partial detailed perspective views of the internal structure.
9 and 10 are respectively a plan view and a rear view of the internal structure, FIGS. 11 to 18 are diagrams showing details of the internal structure, and FIGS. 19 to 26 are diagrams showing the operation of the cassette deck. It is a figure for explaining. Explanation of symbols of main parts 1...Cassette deck 2...Housing 2a...Opening 3...
- Seat7-Si3a, 3f'...Bending portions 3c, 5m, 56a, 95a, 126d. 140...Long hole 3d...Support protrusion 5...Reel conit 5a...Rotation shaft 5b...
Reel 5C...Color 5d...
Bushiko 5e...Expanded diameter part 5"...
Double gear 5Q, 511, 30b, 35.40, 41゜60.70, 76.82, 84, 103゜104, 1
18. 119. 125. , 139...Coil spring 5h...Felt plate 51...Arm 5j, 5k...Washer 7...Intermediate lever 7a, 8a, 8b, 10b, 30d, 33a. 39e, 4.4a, 77b, 83c, 86b. 91, a, 100a, 129b, 130a. 1.38a, 13Bd...-bin 7b, 6/Ia
...Openings 7C, 56C...Notches, 8...Idle lever 10...End detection levers 10a, 14c, 33f, 39a, 39b. 39c, 42a, 4.7a, 49a, 56e. 81aX, 99c, 99e, 113c. 114G...Protrusion 11...Swive chassis A 12...Lever A 14...End detection gears 14a, 39h, 47b, 100b. 140a...Protrusion 14b...Protrusion 16.17.18.19, 61, 132°133.13
4...Gear 20.135...Gear transmission mechanism 22...
・Worm 23...Pulley 24...
・Motor 24a...Small pulley 25...
... Belt 27 ... Flywheel 2
7a, 27b...Gear portion 28...Idler gear 30...Support lever 30a...Capstan 33...
...First gear 33b... Partial tooth portions 33c, 33d, 34c, 3'4 (j... Missing tooth portion 34... Second gear 34a, 34b... ...stop bin 36.124
...Plate 39...Control board 39d...
Regulation part 39Ω... Convex part 42...
...Lever B714...Lever C47...
...Head stand/19...Magnetic head 51a, 123...Claw member 51b, 99d...Spring member 52...Movement array j 52a, 52b ......Claw portion 53...Lever D 54.66...Spring 56...Slide member 56 (1, 113a, 114a...Taper Part 5
7... Bearing member 59... Fan-shaped gear 64... Regulation member 65... Screw 69... Prohibition lever 69a, old... Matching recess 69b... Engaging protrusion 73... Start trigger lever 73a...
...One end 73b, 83b, 126b, 129c ...Second end 75...Magnetic head switching command rod 77.86
......Electromagnetic solenoids 77a, 86a...
・Movable Ron door 9... Operation switch group 81.
...Moving member 83...Lever F 83a, 126a, 129a...1921 part 89.138b...Support shaft 90...Pinch roller 91... Arm member 95... Sub-chassis B 96... Rocking member 96a...
Left end portion 98...Cullet holder 98a...
... Swing shaft 99 ... Top member 10
0... Right side member 101... Moving member
102... Lever [=106...
・Reel hole 107... recess 111...
...Zub chassis C 113,114...Longitudinal operation lever 115.1
16... Operation button 121... Longitudinal bottle l2zla... Upper end protrusion 126...
... Lever 1-1 129 ... Lever ■1
30... Swing lever 138... Intermediate lever 1401)... Rear right edge 142... Repeat J

Claims (2)

[Claims] (1) comprising a magnetic head rotatably provided on a head stand about an axis substantially perpendicular to the magnetic tape contact surface, and an azimuth adjustment means for adjusting the angle of the magnetic head;
The azimuth adjustment means are symmetrically provided, each end being fixed to the head stand substantially directly above the magnetic head, and the other end extending in a direction away from each other being fixed to the outer periphery of the magnetic head. a flexible regulating member that engages at a position to sandwich the magnetic head to regulate rotation of the magnetic head; and a positioning means that engages with the other end of the regulating member to position the other end. A cassette deck characterized by consisting of. (2) The cassette deck according to claim 1, wherein the pair of regulating members is a single member joined at each of the ends.