JPS6182360A - Cassette deck - Google Patents

Abstract

PURPOSE:To prevent a cassette half from jumping out at ejection by providing a projection engaged with the cassette half and a spring member energizing the cassette half to a moving member fitted to a cassette holder. CONSTITUTION:The moving member 101 engaging with the cassette half is fitted to the lower face of the cassette holder 98 in the ejecting direction of the cassette half. Projections 99c, 99e engaged with the cassette half are formed incorporatedly with the upper face member 99 of the member 101. Moreover, the spring member 99d energizing the cassette half is provided in a direction where the projections 99c, 99e are engaged with a part of the cassette half. Thus, at ejection the possibility of the cassette half jumping out of the deck main body is precluded at all and the cassette half is positioned surely by a recovery position by a listener.

Description

[Detailed description of the invention] Anti-IjUL The present invention relates to a cassette deck.

BACKGROUND ART In recent years, cassette decks have been becoming more and more compact, and there is a strong demand for smaller cassette decks, especially for vehicle-mounted cassette decks, because there is a limit to the space in which the cassette deck can be accommodated.

The cassette deck is equipped with a four-cassette device structure, for example, in Japanese Patent Application No. 581,878 filed by the applicant of the present application.
There are mechanisms, such as the cullet loading mechanism for a cassette deck proposed as No. 43, that contribute to downsizing of the cassette deck. The cullet loading mechanism includes a movable member that engages with the cassette half and is movable in the insertion and ejection direction of the cassette half, a bias means that applies a bias in the ejection direction to the movable member, and holds the inserted cassette half. a cassette holder that is movable between a raised position in which the half is placed in the held cassette 1 and a lowered position in which the half is positioned in a playing position, and that is biased toward the lowered position by movement of the movable member in the insertion direction; have.

In the cassettes 1 to a3 configured as described above, ejection is performed by ejecting the cassette half together with the moving member by the bias means. By the way, a predetermined frictional force is generated between the moving member and the cullet half to prevent the cassette half from jumping out from the moving member during ejection by the above-mentioned pie scan, but for some reason this frictional force is reduced. If the cassette half is put away, there is a risk that the cassette half will jump out.

Summary of the Invention The present invention has been made in view of the above points, and includes:
The purpose is to provide a cassette deck in which the cassette halves do not fly out from the deck body during ejection and are reliably positioned at the cassette half recovery position.

The cassette deck according to the present invention includes: a moving member that engages with a cassette half and is movable in the insertion and ejection direction of the 7J set half; a bias means that applies a bias bias in the II ejection direction to the moving member; The cassette half is movable between a raised position for holding the held cassette half and a lowered position for positioning the held cassette half at a playing position, and is urged toward the lowered position by movement of the moving member in the insertion direction. a cassette 1-holder, the movable member has a protrusion integrally formed on the movable member and engages with the cassette half, and the cassette is moved in a direction in which the protrusion engages a part of the cassette half. It is characterized by being provided with a spring member that biases the half.

Embodiment Hereinafter, a cassette deck as an embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 indicates the entire cassette deck.

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 established. 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 the figure, the reel unit 5 has a co-rotating support shaft 5a fixed to the chassis 3.
have. A bevel 5b is rotatably fitted onto the rotary support +58. A collar 5c and a bush 5d are fitted to the upper and lower ends of the reel 5b, respectively. The collar 50 is attached to a cullet reel which is housed in the cassette half and has one magnetic tape wound around it.
obtain. 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 gear portions is disposed between the enlarged diameter portion and the bush 5d. , 5. It is rotatably attached to the rotating support shaft 5a.

A coil spring 5g is interposed between the double gear 5 and the bush 5d to urge the double gear and the bush away from each other. Further, a felt plate 5h is provided between the enlarged diameter portion 5e of the reel 5b and the double gear 5f. The felt plate 5h is attached to the enlarged diameter portion 5e, and is slidably in contact with the double gear 5[. An arm 51 is provided between the upper surface of the enlarged diameter portion 5e and the collar 50, and one end of the arm 51 is rotatably attached to the outer periphery of the reel 5b. The lower and upper surfaces of the arm 51 are slidably engaged with the enlarged diameter portion 5e and collar 5C of the reel 5b via washers 5j and 5k, and there is a gap between the upper washer 5 and the arm 51. A coil spring 5p is arranged to bias the arm downward.

As shown in FIGS. 2, 3, 9, and 10, an intermediate lever 7 is disposed on the right side of the reel unit 5 and extends approximately in the front-rear direction. It is attached to the chassis 3 so as to be rotatable in a plane parallel to the main surface of the chassis. A rectangular opening 7b is formed at the front end of the intermediate lever 7, and a bin 88 protruding from the center of the floating lever 8, which is freely movable on the chassis 3, is inserted into the opening. It is loosely fitted.

The floating lever 8 has pins 8b protruding from both ends thereof, and each pin is slidably engaged in a long hole 5m formed at the free end of the arm 51 of the reel unit 5. ing. Also shown in Figures 7 and 18: j: Sea urchin, middle 1
An end detection lever 10 is arranged near the rear end of the collar 70. This end detection lever 10 is connected to the chassis 3
One pivoting end of a lever A12 rotatably installed on a sub-chassis A11 which is fixedly protruding upward from the upper surface of the rear end, in this case the right end of the lever A, is pivoted at the upper end It can be installed freely. End detection lever 10
A projection 10a extending downward is provided at the lower end of the intermediate lever 7, and the projection 10a is connected to a notch 7 formed at the rear end of the intermediate lever 7.
It is slidably engaged with C.

As shown in FIGS. 7, 9, and 18, a bin 10b is provided protruding from the rear surface of the upper end of the end detection lever 10, and the bin is rotatably attached to the subchassis A. The old end detection lever 10 is engaged with an end detection gear 14 that faces the rear end of the end detection lever 10 . As is clear from FIGS. 7 and 18, a four part 14a is formed on the opposing surface of the end detection lever 10 of the end detection gear 14, and a four part 14a is formed on the circumferential surface of the recess that projects in the radial direction of the end detection lever. Three substantially mountain-shaped protrusions 14b having the same shape are provided at a pitch of 1206. Moreover, three protrusions 14c having the same shape are formed in the center of the recess 14a and extend radially toward the valleys between the above-mentioned mountain-shaped protrusions 1/ItJ. A circle circumscribing the top of each protrusion 14b and each protrusion 1
If a circle is assumed to be located at the top of 4c, the diameters of these eight circles are approximately the same size. The bottle 101) protruding from the end detection lever 10 is connected to these protrusions 1.
4,b and the protrusion 14c.

One of the tape end detection mechanisms for detecting the end of the magnetic tape being played by the reel units 1 to 5, the intermediate lever 7, the floating lever 8, etc., the 1st detection lever 10, and the end detection gear 14. The department is made up of:

As shown in FIG. 2, FIG. 7, FIG. 9, and FIG.
On the left side are four gears 16, 17.1 meshing in series.
A gear transmission mechanism 20 consisting of gears 8 and 19 is provided, and the end detection gear 14 is the final stage gear 1 of the gear transmission mechanism.
They mesh together. 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 rotatably mounted on the beam chassis Δ11 (one digit A- A pulley 23 is integrally formed at the lower end of the arm 22.As shown in FIG. The motor 24 rotates through the belt 25.
is directly wound around a small pulley 24a fitted to the output shaft of the motor 24.

As is clear from FIG. 10, the belt 25 is also passed around a pair of flywheels 27 that are rotatably provided on the lower surface of the chassis 3 and arranged one behind the other. However, the rotation direction of the motor 24 is such that the direction of arrow M is the forward rotation direction, and the pulley 23 is always rotated in the direction of arrow N, and the pair of flywheels 27 are always rotated in the direction of arrows 0 and P, respectively. A belt 25 is passed around the belt.

The flywheel 27 has gear portions 27a and 27b of different sizes on its outer and inner circumferences. flywheel 2
Of the two large and small gear portions formed in the reel unit 7, the smaller gear portion 27b is configured to mesh with the large diameter gear portion of the double gear 5r of the reel unit 5 via a pair of front and rear idler gears 28. As is clear from FIGS. 2, 3, and 9, the idler gear 28 rotates at one end of the support lever 30, which is swingably provided on the chassis 3 via the shaft portion 1rA 30a. It is freely attached, and the swinging of the support lever allows it to move 12 times relative to the double gears 5f of the reel units 1-5. Further, the idler door 28 is biased in the direction closer to the double gear 5f by the support 1 flange 301 and the t coil spring 301.

As shown in FIGS. 2, 7, 9 and 18, the first gear 33 and the second gear 3/l rotate on one side of the gears 16 to 19 on the rear surface of the subchassis A11. It is freely given. The first gear 33 meshes with the gear 16 of the gear transmission mechanism 20 (see, for example, FIG. 7), and the second gear 34 meshes with the gear 18 of the gear transmission mechanism.

Here, the gear transmission mechanism 20, the arm 22, the pulley 23, the belt 25, etc., connect the first gear
A rotational force applying mechanism is configured to apply rotational force from the motor 24 as a single drive source to the third and second gears 34. Further, the rotational force applying mechanism is connected to the motor 2/1. 1:
A rotational force applying means for rotationally driving the first gear 33 and the second gear 3/1 is configured.

The first tooth 33 is for reciprocating a head stand, which will be described later. First, a structure for connecting the first gear and the head stand will be described.

For example, as shown in FIGS. 7 and 18, a pin 33a is protruded from the rear surface of the first gear 33, and the pin 33a urges the first gear 33 clockwise in FIG. One end of a coil spring 35 is hung. The other end of the coil spring 35 is connected to the plays 1 to 36 fixed to the tips of the rotational shafts (not shown) of the gears 16 and 18.

As shown in FIGS. 2, 3, 9, and 11, a bent portion 3a extends upward in parallel with the subchassis A11 at the rear end of the chassis 3, that is, at the rear of the subchassis A11.
is formed. As shown in FIG. 4, a control plate 39 made of a rope plate is attached to the front surface of the bent portion 3a so as to be movable in the left-right direction. The movement limit position of the control plate 39 in the left direction is called the maximum forward movement position of the control plate, whereas the movement limit position in the right direction is called the maximum double movement position. A coil spring 40 is connected to the right end of the control plate 39 to bias the control plate to the right, that is, in the backward movement direction. A protrusion 39a that can be engaged with the pin 33a of the first gear 33 is formed at the upper end of the central part of the control plate 39 (J). Therefore, the control plate 39 is moved forward by the rotation of the first gear 33. As shown in FIGS. 2, 4, and 10, the lower part of the three control plates A lever B 42 is connected to the control plate via a coil spring 41 and moves to the left as the control plate moves forward.At the right end of lever r3/12, a control plate is connected to the control plate via a coil spring 41. A protrusion /I2a is formed to engage with the right edge of the protrusion 39b formed at the lower end of the lever B42. It is clear from Figures 2, 8 and 10 that the left end of the lever 13/12 (j
The lever C44 is pivotally connected at its center via a pin 4.4a to the rear end of a lever C44 rotatably attached to the chassis 3. The front end portions of the levers C4, 4 are 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, 41, lever B 4.2, etc., lever C44
A head stand driving mechanism for driving the head stand 47 is constituted by these and related peripheral small members.

Next, the first gear 33 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 of the first gear 33 and the second gear 34 is 1:1.

As is clear from FIGS. 7 and 18, the second gear 34
On the rear surface, two protruding pins 34a and 34b are provided at a pitch of 180° to the two wooden studs 1.
The knob pin 3/la also protrudes from the front part of the second gear.
: It passes through the second gear. Note that both stop pins 3/Ia and 311 can engage with the right edge of a protrusion 39C projecting 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 claw portion +A 51 a and a spring member 511) are provided near the second gear 34, and the second gear 3/1 is rotated as shown in FIG. It is biased in the cutting direction.As shown in FIG.
is mounted so that it can freely reciprocate in the left and right direction. At the right end of the movable notebook 52, there is a claw portion 52a that can be engaged with a stop pin 34a protruding from the front surface of the second notebook 34.
and 521) are formed. The claw portion 52a engages with the stop bin 34a at its right edge, and the claw portion 521
] is adapted to engage with the stop bin 34a at its left edge. That is, the movable plate 52 reciprocates as the second gear 34 rotates 180° in one direction.

As shown in FIG. 2, FIG. 3, and FIG. 9, a lever D53 formed in a substantially dogleg shape is disposed near the left end of the moving plate 52, and the lever D53 has a central bent portion. It is rotatably attached to the upper surface of the chassis 3. Further, the lever D53 is click-biased by a spring 54 (see FIG. 3). The left end of the moving plate 52 is pivotally attached to the rear end of this 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 portion of the magnetic head 49 is made of a die-cast base metal, whereas the material of the bearing member 57 that fits into the rotating shaft portion is PPS resin containing glass binding string.

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. . The magnetic head 49 is located between the first angular position and the second angular position.
It can be rotated freely between the angular position and the recess.

A fan-shaped gear 59 is arranged 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 at the main valve of the fan. However, in order to prevent the joint between the fan-shaped gear 59 and the bearing member 57 from interfering with the reciprocating movement of the slide member 56, the slide portion 4156 is provided with a long hole 56 into which the joint is loosely fitted.
A is provided extending in the front-rear direction. Note that the fan-shaped gear 59 is click-biased by a coil spring 60. A pin 59a is protruded from the right end of the fan-shaped gear 59, and the pin is pivotally attached to the slide member 5G. That is, as the slide member 56 reciprocates, the fan-shaped gear 59 swings J/¥).

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 second gear 34, the moving plate 52, the lever D53, the spring 5/I, and the slide member 56,
Bearing member 57, fan-shaped gear 59, etc., coil spring 6
The gear 61 and related small peripheral members constitute a head rotation mechanism for rotationally driving the magnetic head 49. 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/17 to reciprocate and the magnetic head 49 to rotate. Furthermore, as understood from the previous explanation,
When the first gear 33 rotates 360 degrees, the head stand/1.7 performs forward and reverse vJ movements, and when the second gear 3/I rotates 180 degrees, The magnetic head 49 is rotated 180 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 4
A regulating member 64 extending in the front-rear direction is fixedly provided on the magnetic head 7 to surround the magnetic head 49 .

The regulating portion 64 is made of a steel plate and has flexibility. The restricting portions iJ' 6 /I are formed symmetrically in the front-rear direction, are fixed to the head stand 47 at their central portions, and extend in directions separating from each other around the central portions. Both the front and rear ends thereof can be engaged with the outer circumference of the magnetic head 49. More specifically, both front and rear ends of the regulating portion 64 are positioned so as to sandwich the four magnetic heads from the front and back, and both ends are bent in a U-shape, and the lower side of the U-shape is bent. engages with a protrusion 498 protruding from the outer periphery of the magnetic head/19. By doing so, rotation of the magnetic head 49 is restricted.

Note that an opening 64a is provided on the upper surface of the regulating member 64 so that the projections 49a of the four magnetic heads do not come into contact with the regulating member 64 when the four magnetic heads rotate. A pair of screws 65 screwed into the head stand 47 are engaged at both front and rear ends of the regulating member 64 at their necks. Further, a pair of springs 66 are interposed between the lower surface of both the front and rear ends of the regulating member 64 and the head stand 47 to apply an upward bias to the front and rear ends. However, only one spring 66 is shown in FIG. These screws 6
5 and the spring 66 constitute positioning means for positioning both the front and rear ends of the regulating member 64.

Further, the positioning means and the regulating member 64 constitute an azimuth adjusting means. That is, a pair of screws 6
By tightening or loosening 5, the angle of the magnetic head 49 can be adjusted individually at the two angular positions.

Note that the same effect can be obtained by dividing the regulating member 64 at its center into two members and fixing each member in a cantilever shape to the head stand 47 directly above the magnetic head 49. It will be done. However, by making the regulating portion 4A a single member having a front-back symmetrical shape, the number of parts is reduced and the number of assembly steps is also reduced, contributing to a cost reduction of 1.

The story goes back and forth, but for example, as shown in FIG. 18, the first gear 33 is provided with two missing tooth portions 33c and 33d symmetrically with respect to a partial tooth portion 33b having approximately three teeth. . When the first gear 33 is in its operation 1) it static 1F state, the toothless portion 330 is connected to the gear 16 (gear transmission mechanism 2).
0), and the partial tooth portion 331) is prevented from biting into the gear 16 by a start door lever, which will be described later. On the other hand, a pitch of 180° is also applied to the second middle tooth 34 to create two missing teeth 3/IC and 3.
/ld is formed, and when the second gear is in the operating static state, the toothless portion 34C corresponds to the gear 18 (t@part of the vehicle transmission mechanism 20), and j, which will be described later; The rotation of the second gear is restricted so that the toothed portion does not get into the gear 18.

Next, regarding the trigger means for causing the second gear 34 to mesh with the gear 18 after the first gear 33 meshes with the gear 16 when the first gear 33 and the second gear 3/I rotate. explain.

As is clear from FIG. 4, at the rear end of the control plate 39,
A regulating portion 39d that engages with the stop pins 34, a, '34b 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). is formed.

As shown in FIGS. 2, 4, and 17, a prohibition lever 69 is disposed on the left side of the control plate 39, and its lower end is pivoted to the rear end bent portion 3a of the chassis 3. It is attached so that it can move freely.

The prohibition lever 69 is formed with an engagement recess 69a that can be engaged with a pin 39e protruding from the front surface of the central portion of the control plate 39. In addition, the prohibition lever 69 is connected to a coil spring 70.
is biased clockwise in FIG. 17. The control plate 39 is moved forward by the inhibit IF lever 69 and the coil spring 70, and when it reaches its maximum forward movement position (leftward movement limit position), the control plate is moved backward (
A prohibition means is configured to prohibit movement (movement to the right).

On the other hand, it is particularly clear from FIG.
An engagement protrusion 69 formed on the prohibition lever 69 is provided on the outer periphery of the prohibition lever 69.
A protrusion 331 that can be engaged with 11 is formed. That is,
When the first car 33 first moves, the protrusion 33 of the 1111!1 car
f engages with the engagement protrusion 69 ]), the inhibit IF lever 69 swings in one direction in the opposite direction as shown in FIG. It is meant to be done.

The above-mentioned inhibiting means (consisting of the inhibiting lever 69, etc.), the control plate 39, the =1 spring 40 as a biasing means for biasing the control plate in the backward movement direction (to the right), and the first gear The partial tooth portion 33b of 33 is connected to the gear 16 (gear transmission M420
The right tooth of the second gear 34 meshes with the gear 18 (a part of the gear transmission mechanism 20), such as a coil spring 35 serving as a biasing means that urges the first gear in the direction of meshing. The second gear 33 and the second gear 34 are moved in the direction of
Trigger means is configured to cause the second gear 34 to mesh with the gear 18 after the first gear 33 meshes with the gear 16 when the gear starts rotating.

As shown in FIG. 2, FIG. 7, FIG. 9, and FIG. 18, a trident-shaped start 1-rega lever 73 is rotatable at the center of the front surface of the central part of the sub-chassis A11. is attached to.

As is clear from FIGS. 7 and 18, one end 73a of the start trigger lever 73 is bent rearward at a right angle, and the bent portion can be engaged with the first gear 33. . More specifically, the pin 33a protruding from the rear surface of the first gear 33 passes through the first gear and protrudes from the front surface of the first gear by a predetermined amount, and the pin 33a protrudes from the front surface of the first gear 33 by a predetermined amount. is engaged with this portion protruding from the front, and the rotation of the first gear 33 is regulated by this. A second end 73b formed on the start trigger lever 73 and extending to the right is connected to the lever Δ1.
2 from the lower surface of the left end. That is, the second pant portion 73b of the start trigger lever 73 is engaged with the end detection lever 10 via the lever Δ12, and when the end detection lever 10 moves upward, the start trigger lever -73 rotates clockwise in FIG. 18, and the rotation restriction state of the first gear 33 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. A magnetic head switching command rod 75 is provided on the lower surface of the chassis 3 in the left and right direction.
It is attached so that it can move back and forth, and is made of a rope plate and is formed into an L-shape as a rest. That is, by moving the magnetic head switching command rod 75 to the left, the start trigger lever 73 is configured to rotate in the horizontal direction in FIG. 18. Also, as shown in FIG. 10, the third part of the start trigger lever 73 is located near the head switching command rod 75.
A coil spring 6 is disposed at the end portion 730 to apply a rightward bias. As shown in FIGS. 2, 3, and 17, an electromagnetic solenoid 77 is disposed near the motor 24 and extends from side to side.
It is fixed on the chassis 3. A movable rod 77a of the electromagnetic solenoid 77 protrudes to the right with respect to the solenoid body, and a pin 771 extending vertically is fitted into the tip of the movable rod. The lower end of the bin 77b is loosely fitted into an elongated hole 3C formed on the main surface of the chassis 3 and extending in the left-right direction, and is engaged with the right end of the magnetic head switching command rod 75. That is, by pulling the movable rod 77a of the electromagnetic solenoid 77, the magnetic head switching command rod 75 is moved to the left (therefore, the start trigger lever 73 is rotated clockwise in FIG. 18). It is. Further, as shown in FIG. 1, the front surface of the housing 2 has an opening 2a.
An operation switch group 79 is arranged on the right side of the switch, and one switch in the operation switch group serves as a switching command switch for operating the electromagnetic solenoid 77. As shown in FIGS. 2, 4, 10 and 17, the chassis 3 with the control board 39 removed
A movable member 81 is provided on the front surface of the rear end bent portion 3a so as to be movable in the same direction as the control plate, that is, in the left-right direction.
I'm getting fucked.

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 can engage with the right edge of the projection. That is, the moving member 81 moves to the left together with the control plate 39 as the first gear 33 rotates. Moving part (As2
A coil spring 82 is connected to the right end of the movable member for imparting a rightward bias to the movable member.

As is particularly clear from FIG. 3, a T-shaped lever F83 is disposed on the right side of the moving member 81.
Further, it is rotatably attached to the rear end bent portion 3a of the chassis 3 at approximately the center thereof. A first end 83a formed on the lever E83 and extending downward is connected to the rear end of the moving member 81 via a coil spring 84. That is, as the moving member 81 moves to the left, the lever E83 rotates clockwise in FIG. 17. A bottle 83c extending forward is protruded from the tip of a second end 83b formed on the lever E83 and extending leftward, and the bottle is connected to a convex portion 39g formed at the rear end of the control plate 39. and the recessed portion 39h, respectively.

When the bin 83c is engaged with the concave portion 39h, the control plate 39 can move to the most backward movement position of the control plate (rightward movement limit position), and when the bin 83C is engaged with the convex portion 39 (I) When the control plate 39 is in the most backward position, the return of the control plate 39 to the most backward movement position is regulated.As mentioned above, when the control plate 39 is not in the most backward movement position, the regulating portion 39d formed on the control plate
engages with the stop pins 34a and 34b of the second gear 371, thereby restricting rotation of the second gear.

As shown in FIGS. 2, 3, 9, and 17, an electromagnetic solenoid 86 is disposed 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 F83 and extending upward
It is pivotally attached to the tip of 3d. In addition, the movable rod 86
When the lever E83 is in its protruding position (the position shown in FIG. 17), the pin 83c of the lever E83 engages with the protrusion 39 at the rear end of the control plate 39.The electromagnetic solenoid 86 It is activated by operating the key of the automobile in which the cassette deck is installed, and when the key is in the on state, the movable rod 8 of the electromagnetic solenoid 86 is activated.
6a is pulled in as the movable member 81 moves to the left and is fixed in the retracted position, so that the pin 830 of the lever F83 engages with the rear end recess 39h of the control plate 39. . Furthermore, when the key is turned off, the movable rod 86a is pulled out by the urging force of the coil spring 82 that urges the moving member 81 to the right.
Therefore, the pin 83c of the lever E83 engages with the rear end protrusion 39 (I) of the control plate 39.

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 that rotatably holds the idler gear 28 is a capstan. Note that, as shown in FIG. 10, this shaft member 30a is attached to the flywheel 2.
On the other hand, as is particularly clear from FIGS. 3 and 5, near the capstan 3Qa in the chassis 3, there is a pair of support shafts extending upward. 89 is provided protrudingly, and an arm member 91 having a pinch roller 90 rotatably attached to the free end thereof is rotatably attached to the support shaft.

The pair of pinch rollers 90 are each detachable from the capstan 30a. A bottle 91a for oiling the arm member in the vertical direction is fixed to the free end of the arm member 91, and a spring 66 for adjusting the azimuth of the four magnetic heads is attached to the lower end of the left edge of the bottle. One end (see, for example, FIG. 5) is engaged. Arm member 91
This spring 66 urges the pinch roller 90 in a direction toward the capstan 30a.

The capstan 30a described above, the pinch roller 90,
The reel unit 5, the idler gear 28, and peripheral small members related thereto constitute a tape transport direction switching means that determines one arp transport direction corresponding to the two rotational angular positions of the magnetic head 49.

Each bottle 91a provided at the tip of the arm member 91
The upper ends of the slide member 56 can be engaged with the front and rear ends of the slide member 56, respectively. More specifically, two notches 56c are formed at the front and rear ends of the slide member 56, each extending in the front-rear direction and having open ends facing each other.
are provided, 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 56d 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.

When the bin 91a engages with the notch 56C, the arm member 91 is rotated to the left by a predetermined amount, and the pinch roller 90 is detached from the capstan 30a. That is, the pair of pinch rollers 90 are selectively detached from the capstan 30a by the reciprocating movement of the slide member 56, which is a component of the head rotation mechanism described above.

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, with peaks facing each other. Also, on the left side of the protrusion = 1-78, there are four parts 4 continuous to the protrusion.
7b is formed.

These protrusions 4.7a and recesses 47b are head base/1.7
When the lever moves to the right, it engages with a pin 30d protruding from one swinging end of the support lever 30 shown in FIG. 3, for example. Mountain-shaped projection 4.7
When a engages with the bin 30d, the support lever 30
The idler gear 28 attached to the support lever swings in the direction of detaching from the double gear 5f of the reel unit 5, and the concave portion 471) following the protrusion 47a moves toward the bin 30.
When the idler gear 28 is engaged with the double gear 5
The support lever 30 is designed to return to the position where it engages with f.

On the other hand, a pair of front and rear support levers 3 are also provided at both front and rear ends of the slide member 56 when the head stand 47 moves to the right.
A protrusion 56e is formed to engage with either one of the bottles 30d and to prevent the bottle from entering the recess 47b of the head stand 47. However, each protrusion 56e is attached to a pair of bins 30 according to the forward and backward movements of the slide member 56.
It is designed to engage with only one of d. That is, the pair of idler gears 28 are configured to be selectively removed from the reel unit by the reciprocating movement of the slide member 56, which is a part of the head rotation mechanism.

Next, a mechanism for loading cassette halves will be explained.

As shown in FIGS. 2, 6, and 12 to 14, there is a subchassis B95 on the upper surface of the right end of the chassis 3.
is permanently installed. A swinging member A96 extending in the left-right direction is disposed on the chassis 3, and a swinging member A96 at the rear end is connected to the sub-chassis B95 and the support protrusion 3d provided at the left rear end of the chassis 3. It can be installed freely.

A cassette holder 98 for holding a cassette half is swingably attached to the free end, that is, the front end, of the swinging member A96 at its center in the front-rear direction. Note that, for example, the cassette holder 9 shown in FIG.
The position B is called the upper back position of the cassette holder. The cassette half is inserted into the cullet 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 by the holder 98 is positioned at the playing position. Tsu1-
The li'7 neck of the holder 98 is referred to as the lowered position of the cassette holder. The holder 98 is movable between this lowered position and the upper back position.

On the lower surface of the power supply 1-holder 98, there is a movable member 101 which consists of two members, an upper surface member 99 and a right surface member 100, and which can engage the half of the old cassette 1 in the insertion and ejection direction of the cullet half, that is, in the front-rear direction. It is attached so that it can be moved freely. A bottle 100a is protruded from the right side of the right side member 100, and the bottle 100a is fitted into a long hole 95a formed in the subchassis 895 so as to extend in the front-rear direction so as to be able to move around it.

On the other hand, a lever F10 is located at the center lower end of the sub-chassis 95.
2 is swingably attached at its lower end, and the upper end of the lever F is pivoted to the bottle 100a.

A coil spring 103 is connected to the lever F102, which biases the lever F clockwise in FIG. 13, thereby imparting a bias force to the moving member 101 in the cassette half ejecting direction, that is, forward. Right side member 10
A recess 100b that recesses downward is formed in the front end of the right side member 10 when the cassette half is inserted.
0 moves rearward, the pivot shaft 98a of the cassette holder 98 falls into the recess 100b, and the cassette holder moves to the lowered position. A coil spring 104 is connected to the right end of the swinging member A96 for biasing the swinging member clockwise in FIG. 13. Note that by moving the moving member 101 backward in the cassette half insertion direction, the cassette holder 98 is urged toward the lowered position by the coil spring 103.

As is clear from FIGS. 12 and 14, the moving member 10
The upper surface member 99 of 1 has a protrusion 99c facing the reel hole 106 of the cassette half to be inserted, and this protrusion 99.
A spring member 99d is provided that biases the cassette half so that C projects into the reel hole 106. Note that the protrusion 99c is formed integrally with the upper surface member 99 by stamping or the like. In this way, the protrusion 99
By integrally forming the projections on the upper surface member 99, it is no longer necessary to attach special parts to the nine upper surface members to provide the protrusions, reducing the number of parts and the number of man-hours for installation, and reducing costs. Efforts are being made to reduce this.

The upper surface member 99 is also formed with another protrusion 99e that engages with the cassette half in the vicinity of the reel hole 106. Like the above-described protrusion 99c, this protrusion 990 is also formed integrally with the nine upper surface members by stamping or the like, thereby reducing costs for the same reason as above. Note that the protrusion 99e engages with a four part 107 called a label area formed on the cassette half. In this way, by engaging the protrusion 99e with the four parts provided on the cassette half, the protrusion 99e
This makes the state of engagement of e with the cassette half firm.

In the cassette deck, the cassette half is inserted into the cassette holder 98 along its longitudinal direction. In addition, the above-mentioned control mechanism, that is, the head stand 4
A control mechanism for reciprocating the magnetic head 7 and rotating the magnetic head 49 is arranged near the deepest part of the cassette holder 98.

Next, FF operation (tape fast forward operation) and 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 to extend upward, and this bent portion 3f has a A subchassis C111 also shown in FIG. 15 is fixed. A pair of longitudinal operating levers 113 and 114, which extend and operate in the front-rear direction and are stacked one above the other, are installed in the sub-chassis C111 so as to be reciprocatable in the front-rear direction. The front end portions, that is, the operating end portions of each of the hand-operated levers are separated by a predetermined distance to the left and right, and each operating end portion has an operating button 115, 116 (
(Illustrated in Figure 1) is kept as a pet. The longitudinal operation lever 113 disposed at the bottom is used to perform the FF operation in forward movement, that is, backward movement, and the longitudinal operation lever 114 provided at the upper side is for the forward movement. This is for performing a REW operation. Each of these longitudinal operation levers 11
3 and 114 are arranged above the magnetic head 49. Further, both longitudinal operating levers 113 and 114 are each given a forward bias by coil springs 118 and 119. As is particularly clear from FIGS. 7 and 15, 1. The left side of the rear end of the longitudinal operation levers 113 and 114 can be engaged with the upper end of a longitudinal bin 121 protruding from the left end of the upper surface of the head stand 47 when the head stand is moving rightward. Tapered portions 113a and 114a are formed. That is, by pressing any of these longitudinal operation levers 113 and 114 while the head stand 47 is moving to the right, the head stand 47 is moved a predetermined amount (to the left), thereby causing the magnetic The head 49 is separated from the magnetic tape.
7 is thus moved to the left by a predetermined amount by operating the longitudinal operation lever, the head base 47 is formed!
[The protrusion 47a engages with the pin 30d of the support lever 30 that holds the idler gear 28, thereby causing the idler gear 28 to separate from the double gear 5f of the reel unit 5. Incidentally, the story goes back and forth, but as shown in FIGS. 3 and 9, for example, there is a pair of claw members 12 on the chassis 3 that prevents the reel unit 5 from rotating in the opposite direction.
3 is provided. When the head stand 47 moves, the right end of the head stand 47 engages with the claw member 123 and pushes it open, thereby releasing the state in which the reel unit 5 is prevented from rotating in reverse by the claw member.

Returning to the original topic, as shown in FIGS. 2, 3, and 16, a plate 124 is located on the right side of the rear end of the bent portion 3f formed at the left end of the chassis 3 in the front-rear direction. It is movably attached to the Plate 12/4
A coil spring 1'25 is connected to the upper end protrusion 124a of the plate to provide a forward tension to the plate. A T-shaped lever l-1126 is rotatably attached to the front end of the plate 124 at its center. In particular, as is clear from Figure 16,
a first end 1 formed in the lever 1'' 126 and extending downwardly;
The rear edge of a protrusion 113G extending downward from the longitudinal operation lever 113 is brought into contact with the front edge of the lever 26a. Further, on the front edge of the second end 126b formed on the lever H126 and extending upward, a protrusion 11 extending substantially leftward and protruding from the other longitudinal operation lever 11/I is provided.
The trailing edge of 4G is abutted. That is, by pushing the longitudinal operation levers 113 and 114, respectively, the lever H126 is rotated counterclockwise and 41 clockwise in FIG. 16.

A lever 1129 formed in a substantially dogleg shape is arranged in front of the plate 124, and the lever 1129 is rotatably attached to the left bent portion 3f of the chassis 3 at its central bent portion. A bottle 129b is protruded from the tip of a first end 129a formed on the lever 129 and extending rearward, and this bottle 129b is attached to a third end 126C formed on the lever H126 and extending forward. It is slidably fitted into the formed elongated hole 126d. Further, the second @ portion 129C of the lever 1129 extends downward.

As shown in FIG. 2, FIG. 3, FIG. 10, and FIG. 16, each pair of reel units 5 and flywheels 2
A swing lever 130 is disposed extending in the left-right direction at a position sandwiched between the levers 7 and 7, and is swingably attached to the chassis 3 through a bin 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 29C. Further, 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 final stage gear 13/l is designed to be able to mesh with a small diameter gear portion formed in the double gear 5f of the reel 1. 1, that is. When the longitudinal operation levers 113 and 114 are pressed, the swinging lever 130 swings backward and forward via the levers 1-1126, thereby causing the reel units 5 disposed at the rear and front to move in the alternative direction, respectively. It can be rotated at high speed.

As shown in FIG. 2, FIG. 7, FIG. 15, and FIG. An intermediate lever 138 is provided that can reciprocate in the direction of movement (back and forth direction) of both longitudinal operation levers. A coil spring 139 is connected to the intermediate lever 138 for imparting a forward bias to the intermediate lever. As is particularly clear from FIG. 15, a bin 138a is protruded from the lower surface of the rear end of the intermediate lever 138, and the bin 138a corresponds to the longitudinal operating lever 1.
13. Long hole 14 formed to extend in the front-rear direction at 114
0 in a slidable manner. A four part 140a into which a bottle 138a can be inserted is formed on the right end side of the central part of the elongated hole 140. Here, the intermediate lever 138 can swing by a predetermined angle about a support shaft 138b at its front end. In addition, a coil spring 139 that directs the intermediate lever 138 forward with a force of 4=J is stretched so as to be inclined to the right from the rear to the front, so that the intermediate lever 138 is centered around the support shaft 138b. As shown in FIG. 15, it is also biased counterclockwise. That is, both longitudinal operation levers 113 and 114 move forward (
When the intermediate lever 138 is moved (rearward movement), the pin 138a of the intermediate lever 138 fits into the recess 140a of the elongated hole 140, thereby causing the intermediate lever 138 to move rearward.
1. It is being done. However, if only one of the pair of longitudinal operating levers 113.11/l is moved forward, the rear right edge 140+ of the elongated hole 140 formed in the other longitudinal operating lever may still be attached to the bin 138a. Since the intermediate lever 138 is in contact with the intermediate lever 138, forward movement (backward movement) is not performed.

Although not detailed, the longitudinal operation lever 1 for FF operation
A mechanism 7T is provided for locking the longitudinal operating lever in the forward position when either one of the longitudinal operating levers 13 and 114 for RIIEW operation is moved forward. Further, the locking mechanism locks the other longitudinal operating lever in the forward movement position when the other longitudinal operating lever is moved forward I, and unlocks the one longitudinal operating lever. Furthermore, when either of the longitudinal operating levers 113, 114 is pressed, the lever J142 installed at the rear of both longitudinal operating levers swings clockwise in FIG. Operation 71-

For example, as is clear from FIGS. 2 and 7, a bottle 138d is protruded from the lower surface of the rear end of the intermediate lever 138, and the bottle is attached to the left end of the swinging member 96 (for example, shown in FIG. 6). 96a.

This intermediate lever 138 pushes the swinging member 96 rearward by moving forward, and moves the cassette holder 98 from the above-mentioned lowered position 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 FIGS. 2 and 6, the subchassis B
A bracket 146 is attached to the right end surface of the switch 95, and two switches 147 and 148 are attached to the bracket. The switch 147 is used to switch the power to the cassette deck and a tuner disposed near the cassette deck. Further, the switch 148 is for operating the motor 24. Both switches 147 and 148 are both mechanically actuated upon insertion of the cassette half into the cassette holder 98.

As shown in FIGS. 2, 7, and 18, a switch 1/19 for switching between FF and REW is fixed on the front surface of the left end of the sub-chassis Δ11. This switch 149 is operated by engagement of the moving plate 52 which is attached to the sub-chassis A.

Further, as shown in FIG. 15, the rib chassis 111
A switch 150 for cutting off the power supply to the cassette deck is fixed on the top, and the switch 150 is moved backward when the intermediate lever 138 moves forward and backward. Reverses operation when closed.

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) into the opening 2a of the housing 2 shown in FIG.
The cassette 1-half is held in a cassette holder 98 as shown in FIGS. As shown in FIG. 20, the cassette half 155 is attached to the cassette holder 9.
8, the right side member 100 moves rearward, and as a result, the swing support shaft 98a of the cassette holder 98 falls into the recess 1oob of the right side member 100, and the cassette holder is moved to the lowered position.

Therefore, the cassette half is set at the playing position.

Along with this cassette half insertion operation, the switches 147 and 148 shown in FIG.
starts rotating. When the motor 24 rotates, as shown in FIG. 10, the small pulley 24a rotates in the direction of arrow M, the pulley 23 rotates in the direction of arrow N, and the pair of front and rear flywheels rotate in the directions of arrows O and P, respectively. It will be done.

Therefore, the pair of reel units 5 are moved in the directions of arrows Q and R (as shown in the 10th figure) through the pair of idler gears 28, respectively.
Start rotating. In this way, the pair of reel units 5
Since the magnetic tapes rotate in opposite 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 constituent members of the reel unit 5 shown in FIG. 11, except for the double gear 5f, absorb the tension. It is fixed by the reaction force, and only the double gear 5f continues to idle with respect to the group of 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 Tanabata 24.
It is rotated counterclockwise in FIG. 18 via a mechanism 20. Therefore, the bottle 1o1] projecting from the end detection lever 10 moves to the top of the mountain-like protrusion 14b of the end detection gear 14 as the end detection gear 14 rotates.
I can be shunned. Here, as is clear from the above, the arc 51 of each reel unit 5 is stopped.

Therefore, the intermediate lever 7 is not actuated, and the bin 101) of the end detection lever 10 does not continue to move along the 111-shaped protrusion 141). Therefore, the bottle 10b of the end detection lever 1O comes to rest at the top position of the tl + shaped protrusion 14b, and thereby the protrusion 14C of the end detection gear 14
engages the bin 10b. Therefore, the end detection lever 1
0 moves upward, and the start trigger lever 73 rotates clockwise in FIG. 18 via the lever A12.

In this way, the first gear 33, whose rotation was restricted due to the engagement of the pin 33a with one end of the star 1 to the trigger lever 73, becomes able to rotate, and due to the biasing force of the coil spring 35, as shown in FIG. It is rotated clockwise at . Therefore, the partial tooth portion 33 of the first gear 33
b meshes with gear 16, and the first gear begins to rotate. The rotation of the first gear 33 causes the control plate 39 shown in FIG. 17 to move to the left, and therefore the head stand 47 moves to the right as shown in FIG. comes into contact with. The control plate 39 that has reached the maximum forward movement position (leftward movement limit position) is stopped in its backward 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 86a of the electromagnetic solenoid 86, which is already in the on state, is pushed in.

By this operation, the pin 83C of the lever F83 comes to engage with the recess 39h formed in the right pant part of the control plate 39, and therefore the control plate 39 is moved to the most backward movement position (rightward movement limit position). Movement becomes possible. In addition, the above prohibited one-day bath
When the pin 390 of the control plate 39 enters the engagement recess 69a of the IF inhibit lever 69, the inhibit lever 69 rotates a predetermined amount clockwise as shown in FIG. The mute switch 143, which had been turned on via the switch (see figure), is turned off.

On the other hand, as shown in FIG. 22, the front idler gear is moved from the front reel to the front idler gear by moving the head stand 47 to the right.
The reel unit 5 is disengaged from the double gear 5f of the 1st unit 5, and only the rear reel unit 5 is rotated. Note that this operation depends on the interaction between the protrusion 47a and recess/1711 formed on the head stand 47 and the protrusion 56e provided on the slide member 56, but since it was described in detail in the previous explanation of the configuration, it will not be explained here. Please explain in detail. Further, as shown in FIG. 22, as the head stand 47 moves to the right, the rear pinch roller 9o comes into contact with the capstan 30a, and the front pinch roller 90 corresponds to this. It is held detached from the capstan. This is because the pin 91a protruding from the arm member 91 that supports the front pinch roller 90 is connected to the notch 56 of the slide member 56.
This is due to the fact that it is inserted into c. Similarly, as shown in FIG. 22, by moving the head stand 47 to the right, the pair of claw members 123 that were engaged with the reel unit 5 are separated from the reel unit.

In this way, tape transport to the FWD side is started, and 'F
Reproduction on the WD side is performed.

Next, the operation of switching from FWD side playback to REV side playback will be described.

When the switch for switching the tape transport direction is pressed, the electromagnetic solenoid 77 is turned on, and the movable rod 77a of the electromagnetic solenoid is pulled. Therefore, the start (rega lever 73) rotates in the direction shown in FIG. becomes rotatable, and is rotated clockwise by the biasing force of the coil spring 35 as shown in FIG. The first gear starts to rotate. Immediately after the first gear 33 starts rotating, the protrusion 33f protruding from the first gear engages the prohibition lever 69 (see FIG. 17).
The locking lever is engaged with the engaging protrusion 69b of FIG.
The engagement state of the control plate 39 with the pin 390, such as the engagement recess 69a of the lever, is released, and the control plate 39 is instantly moved to the maximum return position (rightward movement limit position) by the biasing force of the coil spring 7IO. was forced to return to When the control plate 39 returns to the most backward movement position, the head stand 47 moves to the left, and the magnetic head 49 is moved 1if JIR from the magnetic tape.

When the three control plates are at the most forward movement position (leftward movement limit position), the stop pin 34a is engaged with a regulating portion 39d (for example, shown in the fourth figure) formed on the control plate.
Rotation of the second gear 34 is restricted. This restriction is released by returning the control plate 39 to the above-mentioned most backward movement position, and, for example, the claw member 51a and the spring member 5 shown in FIG.
1b causes the second gear 34 to rotate clockwise in FIG. 18. Therefore, the toothed portion of the second wheel 34 meshes with the gear 18, and the second gear begins to rotate. As the second gear 34 rotates, the stop bin 34a protruding from the second gear moves to the claw portion 52 of the moving plate 52.
a, the moving plate is moved to the left, and the magnetic head 49 connected to the moving plate moves 1 toward the REV side.
Rotated 80 degrees. Further, by moving the moving plate 52 leftward, the switch 1/1 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 is moved to the projection 39C (
(see Fig. 17, etc.), and the control plate engages with the stop plate.
It is moved to the left by a predetermined distance by the Tsububin.

When the second gear 3/4 completes 180° rotation, the stop pin 34a is separated from the protrusion 390 of the control plate 39, but then the pin 33a of the first gear 33 is removed from the protrusion 390 of the control plate 39. 39a, the control plate 39 is moved to the most forward movement position (the leftward movement limit position) and is locked by the locking 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,
The mute switch 143 is also in the OFF state and 4T as described above.
Ru.

Further, the slide member 56 is moved forward by the leftward movement of the moving plate 52, and as a result, the head stand 47 is moved rightward, the rear idler gear 28 is separated from the reel unit 5, and the front idler gear 28 is removed from the reel unit 5.
8 is engaged with the reel unit 5, and only the front reel unit 5 starts rotating. Further, the front pinch roller 90 is brought into contact with the capstan 30a, and the rear pinch roller 90 is held separated from the capstan 30a.

In this way, the tape transport direction is switched from the FWD side to the REV side.In addition, regarding the operation of switching the tape transport direction from the REV side to the FWD side, the stop bin 34b of the second gear 34
This is substantially the same as the tape transport direction switching operation from the FWD side to the REV side, except that the moving plate 52 engages with the claw portion 52b (shown in FIG. 18) and moves the moving plate to the right. Not detailed.

Next, the operation of the mechanism that automatically switches the tape transport direction will be explained.

For example, when tape transport to the FWD side is completed, a predetermined tension is applied to the magnetic tape at the end, and the double gear 5f of the constituent members of the reel unit 1-5 shown in FIG.
All members except for are fixed by the reaction force of the tension. Therefore, only the double gear 5f continues idling with respect to the group of fixed members via the felt plate 5h. When the tape is being fed to the FWD side, -1- fixed members The group is also rotating except for the arm member 51. Also, the arm member 51 receives the force caused by the rotational force, and moves the intermediate lever 7 via the floating lever 8.
It is now moving counterclockwise in Figure 22.

As a result, the end detection lever 10 to which the rear end of the intermediate lever is pivoted is rotated counterclockwise in FIG. 18, and the bin 10 protruding from the end detection lever
b moves around while contacting the mountain-like protrusion 14b of the end detection gear 14, and the protrusion 14c of the end detection gear and the bottle 1011
is never engaged. However, when the members of the reel unit 5 except for the double gear 5f become fixed when the tape stops, the force that urges the end detection lever 10 also disappears, and the protrusion 14c of the end detection gear 14 moves into the bin 10h of the end detection lever. engage with. Therefore, the end detection lever 10 moves upward, and the star 1 trigger lever 73 rotates clockwise in FIG. 18 via the lever A12. In the following, the tape transport direction is switched by the same operation as switching the tape transport direction from the FWD side to the REV side by pressing the switch described above. Note that automatic switching of the tape transport direction from the REV side to the FWD side is performed in the same manner as described above, and will not be described in detail.

Next, FF operation (tape fast forward operation) and RFW operation (
(tape rewinding operation) will be explained.

For example, when performing FF operation during tape playback, as shown in FIGS. 24 and 25, the longitudinal operation lever 1 for FF operation is
Press 13 to move it backwards.

Then, the mute switch 14 is activated via the lever J142.
3 is turned on. Further, the longitudinal bin 121 protruding from the left end of the head stand 47 is pushed to the left by the tapered portion 113a of the longitudinal operation lever 113, thereby moving the head stand 47 to the left by a predetermined amount, and the magnetic head 49 and
The contact state of the magnetic tape is loosened.

As is clear from FIG. 25, the backward movement of the longitudinal operating lever 113 causes the lever H126 that engages with the protrusion 113C of the longitudinal operating lever to swing counterclockwise in FIG. 25. Therefore, the lever ■129 similarly swings in the clockwise direction shown in FIG.
As shown in FIG.
It rotates counterclockwise in FIG. 26 about a. Therefore, the gear transmission mechanism 1 provided on the swing lever
The first stage gear 132 of No. 35 meshes with the gear portion 27a of the rear flywheel 27, and 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, the pair of idler gears 28 are separated from the reel unit 5 by moving the head stand 47 to the left by pushing the longitudinal operation lever 113. Therefore,
The rear reel unit 5 rotates at high speed, and the tape is rapidly forwarded.

When performing the REW operation, this is done by pressing the REW operation longitudinal operation lever 114. That is, the protrusion 114C of the longitudinal operation lever 114 is connected to the lever 1-1.
126, and the lever H is rotated clockwise in FIG. They mesh together. In addition,
The leftward movement of the head stand 47 is performed when the tapered portion 114a of the longitudinal operation lever 11/I is connected to the longitudinal bin 1 provided on the head stand 47.
This is done by engaging 21.

When the tape reproduction is finished and the cassette half is to be ejected, the FF operation longitudinal operation lever 113 and the RFW operation operation longitudinal operation lever 114 can be pushed at the same time. Part 2
By simultaneously pressing the longitudinal operating levers of the book, the intermediate lever 138 (for example, shown in FIG. ). Therefore, in a completely reverse operation when loading the cassette half 155, the cassette half is projected to a position where it can be retrieved by the listener. In addition, for example, since the switch 150 shown in FIG. 24 also operates, the electromagnetic solenoid 86 (second
3) is turned off, and the lever E83 is returned to the state shown in FIG. 17 under the action of the fill spring 82. Therefore, the bottle 83c held by the lever E83 can be engaged with the protrusion 39g formed on the right end of the control plate 39. As a result, the return of the control plate 39 to the most backward movement position (rightward movement limit position) is prohibited.

That is, the state in which the stop pin 34a of the second gear 34 is engaged with the regulating portion 39d of the control plate 39 is maintained, and when the power is turned on again, the second gear 34 does not rotate and the tape This prevents unnecessary switching of the 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.

As described in detail above in ``Effects of the Invention'', the cassette deck according to the present invention includes a movable member (upper surface member 99) that engages with the cassette half and is movable in the insertion and ejection direction of the cassette half.
), there is a protrusion (99G, 9'9) that engages with the cassette half.
e) are integrally formed, and is further provided with a spring member (99d) for biasing the cassette half in a direction in which the protrusion engages a portion of the cassette half. Therefore, there is no fear that the cassette half will fly out from the deck body during ejection, and the cassette half can be reliably positioned at the position where the listener can retrieve it.

[Brief explanation of the drawing]

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 for main parts 1...Cassette deck 2...Housing 2a...Front area 3...
- Chassis 3a, 3f...Bending portions 3c, 5m, 56a, 95a, 126d. 140...Elongated hole 3d...Support protrusion 5...Reel unit 5a...Rotation shaft 5b...
Reel 5C...Color 5d...
Bushiko 5e...Expanded diameter part' 5f...
・・Double gear 5 Q, 5 Q, 30 b,
35.40, 41. 60.70, 76.82.84, 103°104.11
8,119,125.139...Coil spring 5h...Felt plate 5;...Arm 5j, 5k...Washer 7... Intermediate levers 7a, 8a, 8b, 10b, 30d, 33a. 39e, /l/Ia, 77b, 83c, 86b. 91a, 100a, 129b, 130a. 138a, 138d...--- Bin 7b, 64a... Frontage part 7c, 56C... Notch part 8... Idle lever 10... End detection Levers 10a, 14c, 33f, 39a, 39b. 39C, 42a, 47a, 49a, 56e. 81a, 99c, 99e, 113c. 1.14 C... Protrusion 11... Sub chassis Δ 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...
... Bell 1-27 ... Flywheel 2
7a, 27b...Gear portion 28...Idler gear 30...Support lever 30a...Capstan 33...
...First gear 33b... Partial tooth portions 33c, 33d, 34c, 34d... Missing tooth portion 3
4...Second gear 34, a, 3/1. b... Stop bin 36.
12/1...Plate 39...Control board 39d...
Regulation part 39g... Convex part 42...
...Lever B44...Lever C47...
・Head stand 49...Magnetic head 51a, 123...Claw member 51b, 99d...Spring member 52...Movement play i~ 52a, 52b... ...Claw portion 53...Lever D 54.66...Spring 56...Slide member 56d, 113a, 114a...-y-Pa part 5
7... Bearing member 59... Fan-shaped gear 64... Regulation member 65... Screw 69... Prohibition lever 69a...・
Engagement recess 69b...Engagement protrusion 73...Start trigger lever 73a...
...One end portion 73b, 83b, 126b, 129c...Second pant portion 75...Magnetic head switching command rod 77.86
......Electromagnetic solenoid 77a, 86a--
-... Possible fJJ [1 point 79... Operation switch group 81... Moving part 83... Lever "83a, 126a, 129a... No. 1 end 89
．． 138b...Support shaft 90...Pinch roller 91...Arm member 95...1 knob chassis B 96...Swivel member 96a...・・・・・・
Left end portion 98...Nor 1~Holder 98a...
...Swinging support 99...Top part II
100... Right side 'rA101...
Moving part month 102...Lever F10G・
... Reel hole 107 ... Concavity 1
11... Subchassis C 113, 114... Longitudinal operation 1 collar 115,
116... Operation button 121... Longitudinal pin 124a... End protrusion 12G...
... Lever 1-1 129 ... Lever 11
30...Rotating 1 collar 138...Intermediate lever 1/1OI)...jp side right red part 1/'
I 2 ・・・ 1ノ ni゛ -, ノ1/I3
...Mu1-Sweet f-146...
·bracket

Claims (1)

[Claims] a moving member that engages with the cassette half and is movable in the insertion and ejection direction of the cassette half; bias means that applies a bias force to the moving member in the ejection direction; and a raised position that holds the inserted cassette half. a cassette holder movable between a lowered position for positioning a held cassette half at a performance position and biased toward the lowered position by movement of the moving member in the insertion direction; is provided with a protrusion integrally formed on the movable member and engaged with the cassette half, and a spring member biasing the cassette half in a direction in which the protrusion engages a part of the cassette half. A cassette deck characterized by: