JPS5960750A - Cassette tape recorder device - Google Patents

Abstract

PURPOSE:To minaturize a cassette tape recorder, by providing a driving member which locks assuredly a sound recording operation element at its operating position without increasing the number of component parts. CONSTITUTION:Both a head and a circuit are set in a recording mode with operation of reproduction and sound recording opertion elements 21 and 60. In this case, the element 21 is locked at its operating position since the bottom surface of the 1st driving part 212 is hooked to a lock lever (not shown in the figure). While a flange part 602 of the element 60 is moved lower than the engagement part 325 of a reproduction driving member 32 when the element 60 is operated downward. Then the member 32 is turned toward an arrow F by the operation of the element 21. For this purpose, the timing is properly set. As a result, the lower surface of the part 325 of the member 32 touches the upper surface of the part 602 of the element 60 in a record mode. Thus it is possible to lock the element 60 at its operating position. In a reproduction mode, the part 602 touches the part 325 to prevent the follow-up recording.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a cassette tape recorder device intended for miniaturization.

[Technical background of the invention and its problems]

In recent years, cassette tape recorders have become popular, as they are small and lightweight, making them suitable for carrying, and 2-way stereo types are especially suitable for playback using headphones.
For example, it is possible to enjoy tape playback while walking by wearing headphones. These portable cassette tape recorders exclusively for headphones have already been made as small as possible, and are currently about the same size as the cassette case that houses all the tape cassettes. .

By the way, since this type of cassette tape recorder, which is designed to be miniaturized, is used only for playback as described above, it is desired to add a recording function. In this case, it is possible to implement the electric circuit without preventing miniaturization by using an integrated circuit IC, etc., but mechanically, a locking mechanism is required to lock the recording control at all operating positions. Therefore, there is a problem that the configuration becomes more complicated and larger, and this problem is the biggest problem when adding a full recording function.

[Purpose of the invention]

This invention was made in consideration of the above-mentioned tiVr, and has a simple structure that allows the recording controller to be reliably locked at all operating positions without increasing the number of parts, and is extremely advantageous in that it can effectively promote miniaturization. The purpose of the present invention is to provide a cassette chip recorder device.

[Summary of the invention]

That is, the present invention provides a playback operator that can be locked at an operating position, a recording operator that can be operated together with the playback operator, and a head that can be brought into contact with and released from the tape in response to the operation and non-operation of the playback operator. and a driving member that is moved to a first and second position where they are in contact with each other, and that locks the recording operator in all operating positions when the recording operator is operated together with the playback operator at the second position. It is a characteristic and a thing.

Before explaining one embodiment of the present invention below,
The basic structure of a cassette chip recorder to which this invention is applied will now be explained.

FIGS. 1(a) and 1(b) show a cassette tape recorder to which the present invention is applied, viewed from the front and from the side, respectively. That is, the cabinet 11 is approximately box-shaped and has approximately the same size as a cassette case that accommodates tape cassettes. This cabinet 11
One plane portion of the cassette lid 12 serves as the cassette lid 12 as it is.

The cassette lid 12 is supported so that the user can manually open and close it by rotating it in the directions of arrows (A) and (B) in FIG. 1(b). By the way, the cassette lid 12 is slightly locked in the open position and the closed position to prevent it from wobbling. Furthermore, it has the cassette lid 121rL and a cassette holder 1, which will be described in detail later.

This cassette holder is linked to the opening/closing operation of the cassette lid 12, and can be held in the table cassette (J3') shown by the two-dot chain line in FIG. 1(b).

Here, inside the cabinet 11, there is a cassette lid 12.
A chip cassette storage section 14 that can accommodate the chip 1 cassette 13' (in a closed state) and a mechanism storage section 15 in which a tape recorder mechanism section, a circuit section, a battery storage section, etc., which will be described later, are installed are provided. In the cabinet 1), a head WII 16 including a playback head, a pinch roller, etc., which will be described later, is provided at a portion facing the tape cassette 13. This head portion 16 is interlocked with the opening/closing operation of the cassette lid 12 together with the cassette holder.

In the tape cassette storage section 14, as shown in FIG.
are supported respectively. In addition, the cassette lid 12
The reel shafts 17 and 18 are located at positions corresponding to the reel shafts 17 and 18 that are on the tape winding side during fast forwarding and rewinding.
Fast forward 9 controls 1 to include rotational axes 171 and 181f.
9 and a rewind operator 20 are provided, respectively.

These fast forward and rewind operators 19, 20, which will be described later, are installed so as to be operable so as to be pressed in the axial direction of the rotating shafts 171, 181 of the reel shaft 17.18.

Further, the cassette lid 12 has a playback operator 2 and a stop operator 22 on the surface of the cassette lid 12 at a position corresponding to the head section 16, that is, at a position not facing the flat surface of the tape cassette 13. It is installed almost vertically so that it can be suppressed.

Further, a window portion 23 is provided approximately at the center of the cassette lid 12.
is provided. This window portion 23 is formed of, for example, a transparent acrylic plate, and is arranged so as to overlap at least a portion of a well-known tape see-through window formed on the flat surface of the tape cassette 13. That is, the edge of the fabric inside the window 23 shown in FIG. It is visible to the naked eye. Furthermore, in order to visually observe the tape running state from the outside, the fast forward and rewind controls 19 and 20 may be made of a transparent material.

Here, in the cassette lid 12, there is a space between the fast-forward and rewind operators 19.20 and the playback and stop operators 21.22, which are directed outward from the tape cassette storage section 14 side. A long hole 121 is formed with a widening taper. This elongated hole 121 is provided so that all channel selection operations can be performed with the cassette lid 12'f closed during radio reception using the tuner bag r. That is,
This cassette recorder can not only play back tapes, but also receive radio broadcasts by using tuner puncture sounds. This uses a tuner bag that houses the tuner circuit section that performs radio wave reception, tuning, detection, amplification, etc. in a casing that has approximately the same shape as the tape cassette, and replaces the entire tape cassette with the tuner bag. This is done by loading the tape cassette into the tape cassette storage section 14. Then, when you select a desired broadcasting station by operating the tuning dial provided on the tuner back, you can receive the desired broadcasting station.
After the IM radio waves are detected and amplified, they are introduced into the main amplification circuit in the cassette tape recorder by opening the connection terminal, and then played back through the headphones, where the radio broadcast is received.
It is something that At this time, with the cassette lid 12'fl closed, the channel selection dial is set to the long hole 12? The cassette lid 12 can be opened and the channel selection operation can be performed without opening the cassette lid 12.

Also, on the side of the cabinet 1, there is a volume adjustment dial (not shown), tape type (normal, chrome,
A changeover switch (metal etc.) and a headphone jack are provided respectively.

Here, FIG. 2 shows the cassette lid 12 completely removed from the cabinet 11. That is, the cassette lid 12 is formed with through holes 122 and 123, respectively, through which the playback operation element 21 and the stop operation element 22 are inserted. As shown in FIG. 3, the cassette lid 12 is formed with four side portions 124 to 127 that constitute part or all of the lf and 11 sides of the cabinet 1.

The fast-forwarding and rewinding operators 19 and 20 are approximately rectangular plates, and the third one formed on the cassette lid 12
It is installed so as to close a substantially rectangular through hole Wj that cannot be seen in the figure. Here, the fast forward and rewind operators 19.
As shown in FIG. 3, a pair of bearings are formed at one end on the back surface side of 20 at portions 191 and 192 and 2θ1 and 2027%, respectively.

On the back side of the cassette lid I2, bearing parts 19.3, 194, and 195.196 are formed at positions that sandwich the bearing parts 191, 192, respectively, of the fast-forward operator 19. Further, on the back side of the cassette lid 12, the bearings of the rewinding operator 20 are located at positions 201, 202, and 203, 204, 2o5, 20, and 203, 202, 203, 204, and 205°20, respectively.
6 is formed. The above-mentioned bearing parts 191 to 196 and 201 to 206 are located side by side on the same line, and the side part 125° 127Kif:i of the cassette lid 12 corresponding to both ends of the row is the through hole 12B. ,
129 are formed one after another.

Here, as shown by the dotted line in FIG. 3, the support shaft 24 is inserted from the outside into the through hole 128 of the side part 125 of the cassette lid 12. This support shaft 24 is connected to the above-mentioned bearings at the portion 19.
1 to 196 and 201 to 206, fast forward and rewind operators 19 and 20 are supported by the cassette lid 12. At this time, both ends of the support shaft 24 are supported by bearing portions 197 and 207 formed on the back side of the cassette lid 12. Further, the fast forward and rewind operators 19 and 20 have a leaf spring 19 whose one end is supported by the support shaft 24 at the center of the back side track.
By being pressed by the other end of the 8°2θ8, the cassette lid x:z is urged to rotate outward about the support shaft 24, but this rotation Engaging portions (not shown) formed at the edge of the return operation element 19.20 and the peripheral side of the through hole of the cassette lid 12 through which the fast forward and rewind operation elements 19.20 are inserted are engaged with each other. By doing so, the fast forward and rewind controls 19,20 are held in the position shown in FIG.

For this reason, the fast forward and rewind operators 19 and 20 are
It is possible to perform a suppressing operation downward in FIG. 2 against the biasing force of the plate springs 198, 208, and during the suppressing operation, the back side of the fast forward/rewind operator 19, 20 is pressed against the reel shaft 17. 18 rotating shafts 171 and 181', respectively, in the axial direction.

Here, FIG. 4 shows the overall appearance of the tape recorder mechanism section, head section 16° cassette holder, etc. installed in the mechanism storage section 15. That is, 25 in FIG. 4 is a main chassis of the tape recorder mechanism section, and the aforementioned reel shafts 17 and 18 are supported so as to be rotatable and slidable in the axial direction. Further, the main chassis 25 supports a capstan 26 which is a rotating shaft of a flywheel to be described later, the reel shaft 17.1B, a motor 27 for driving the capstan 26, and the like.

A cassette holder 28 is supported at one end of the main chassis 25 so as to be rotatable in the directions of arrows (A) and (BJ) in FIG. The holding portion 28 is placed between both ends in the wide direction of a tape cassette (not shown) in the full thickness direction.
1.282 is formed. Furthermore, a pinch roller 30 that can move toward and away from the reproducing head 29 and the capstan 26 is supported approximately at the center of the cassette holder 28 . Furthermore, the cassette holder 28 supports the playback and stop controls 21 and 22, respectively.

The cassette lid 12 is attached to the cassette holder 28.
At this time, the playback and stop controls 21 and 22 are inserted through the through holes 122 and 123 (see Figure 2) formed in the cassette lid 12, respectively, and are attached to the outside. It is used for operation. Here, when the cassette lid 12 is opened, the cassette holder 28 is rotated in the direction of the arrow (~) in FIG. 4, and is brought into the state shown in FIG. , the playback and stop operators 21 and 22, the playback head 29, and the pinch roller 30 are moved together with the Kamioka cassette holder 28.

Next, detailed configurations of the tape recorder mechanism section and head section 16 will be explained. That is, in FIG. 6, the playback operator 21 is supported by a cassette holder 28, which is not shown in FIG. 6, and is located at the lower middle of the main chassis 250, as shown by the two-dot chain line. In the main chassis 25, on the right side of the playback operator 2),
The head chassis 31 is supported by the cassette holder 28.
It is well located. The head chassis 31 is rotated in the direction of the arrow (S, (D) in FIG. The reproducing head 29 is attached to the right end of the head chassis 31 in the figure.
One end of the pinch lever 301 is rotatably supported. The pinch roller 30 is rotatably supported at the other end of the pinch lever 301.

Here, one end of the head chassis 31Fi is locked to one side of the head chassis 3, and the other end is a torsion (not shown) that is wound around the rotation shaft 311 and locked to the cassette holder 28. The spring is biased to rotate about the rotation shaft 311' in the direction of the arrow (Q) in FIG.

Further, the pinch lever 301 is configured such that the pinch lever 301
A coiled spring (not shown) is engaged between the head shear 731 and the head shear 731, so that the head shear 731 is biased to rotate about the rotation shaft 31) in the direction of the arrow (C) in the figure. . Here, the pitch roller 300 rotation shaft 302
is extended so as to be loosely fitted into a long hole 312 formed in the head chassis 31. Therefore, the pinch lever 301 is rotated in the direction of arrow q in the figure by the spring until the rotating shaft 302 comes into contact with the upper end of the elongated hole 312 in the figure.

Further, as shown in FIG. 7, an engaging portion 321 extending from one end of the reproduction drive member 32 is engaged with the lower left end portion of the spare chassis 31 in FIG. 6. As shown in FIG. The reproduction drive unit side 32 is formed in a mounting portion 322 extending to the other end, and a rotation shaft (not shown) protruding from the main chassis 25 is fitted into a through hole 323. According to
It is rotatably supported in the directions of arrows (gl, (F)) in the figure.The base end 324 of this regeneration drive member 32
At the top in the figure, the playback operator 21 is supported by the cassette holder 28 so as to be slidable in the vertical direction in the figure. However, the square operating element 21 is prevented from being removed from the upper slide in FIG. 7, and the cassette holder 2
This is supported by 8.

From the lower surface of the playback operator 21 in FIG. 7, an operating shaft 211 extends downward in the figure.
A bottom surface of a first drive section 212 having a substantially conical shape is attached to the middle lower end portion of (8) of 11. This first drive section 2
12 is connected via a shaft 213 to a section J1 of a second driving section 214 having a substantially conical shape. The bottom surface of the second drive section 214 faces the base end 324 of the regeneration drive member 32.

Therefore, the head chassis 31 can be rotated in the direction of arrow (D) in FIG.
21, the regeneration drive member 32 rotates in the direction indicated by the arrow in FIG. When it is slid, there is no stoppage to prevent it from coming out.

Now, as shown in Figure 3.8 on the playback operator 21,
Assume that the suppression operation is performed downward in the figure. Then, the bottom surface of the second drive section 214 presses the base end portion 324 of the regeneration drive member 320, and the regeneration drive member 32 is rotated in the direction of arrow CF in FIG. Therefore, the engaging portion 321 of the regeneration drive member 32
presses the head chassis 31f against the biasing force of the torsion spring, thereby rotating the head chassis 31 in the direction of arrow (C) in FIG.

At this time, the reproducing head 29 is brought into contact with the tape (not shown) of the tape cassette, and the pinch roller 30 is pressed against the tape. The valve is pressed against the capstan 26. Here, when the pinch roller 30 is pressed against the capstan 26, the pinch lever 30
The pinch lever 301 rotates against the rotation shaft 31 against the biasing force of the tin ring that biases the ring 1 to rotate in the direction of the arrow (C) in FIG.
Since the positional relationship is set so that the cap 1 is pushed back in the direction of the arrow (D) in FIG. The freeze/regenerate operator 2 is locked in the suppressing operation position shown in FIG. 8, and the locking mechanism will be described later.

Here, as shown again in Figure 6, the motor 27 is attached to the upper right part of the main chassis 25 in the figure. A pulley 272 with a small diameter is fitted onto a rotating shaft 2711/C of this motor 27. Further, the flywheel 33 is rotatably supported at the lower right portion of the main chassis 25 in the figure, and the flywheel 33 and the pulley 272 are connected via a belt 34 so as to transmit rotational force. ing. The rotary shaft of the flywheel 33 is the capstan 26. Further, as shown in FIG. 9, the upper flywheel 33 is coaxially provided with a gear 35 having a small diameter.

On the other hand, among the pair of reel shafts 17 and 18 provided approximately at the center of the main chassis 25, the reel shaft 17, which is on the take-up side during fast forwarding, is connected to the main chassis 25 as shown in FIG. It is supported by the chassis 25. That is, a through hole 251 is formed in the main chassis 25 at a portion where the reel shaft 17 is attached. A bearing member 36 is inserted into the through hole 251, which has a generally cylindrical shape and has a flange portion 361 in the lower part of the figure with a larger diameter than the through hole 251.
The periphery of the rim and the periphery of the collar 361 and the lock 362.36
It is fixed by 2. And this bearing is member 3
A rotating shaft 171 of the reel shaft 17 is rotatably inserted into the reel shaft 6 .

Here, in the above-mentioned bearing, the portion of the rotating shaft 17 that protrudes upward in the drawing from the member 36 is formed into a substantially bottomed cylindrical shape. , is fitted on the reel character 138. Although the reel cap 38 rotates integrally with the rotating shaft 171, the locking wing 37 is independent of the rotating shaft 171. Further, in the bearing, a coiled spring 39 is interposed between the upper end of the member 36 and the bottom of the locking member 37, and the rotating shaft 171 is rotated by valves the locking member 37 and the reel cap 38. It is biased upward in the figure. Furthermore, a flange-shaped locking part 373 is formed at the lower end of the locking part side 37 in the figure, and has a tapered part 372 that extends from the bottom to the top in the figure. This locking part 3
73 is formed to have a smaller diameter than the through hole 251 of the main chassis 25.

Further, in the bearing, the portion of the rotating shaft 171 that protrudes downward in the figure from the side 36 is made slightly smaller in diameter via a stepped portion 172, and a gear 40 with a smaller diameter is attached to the smaller diameter portion. Large-diameter gears 41 are fitted respectively. These gears 40 and 41 rotate integrally with the rotating shaft 171, and the gear 40 is fixed to the rotating shaft 171, but the gear 41 is provided so as to be slidable in the axial direction of the rotating shaft 171. ing. Furthermore, the gear 4J is biased upward in the figure by a coiled spring 412 interposed between the washer 411 attached to the lower end of the rotating shaft 171 in the figure and the gear 4J. , the movement of the gear 41 upward in the figure continues until the gear 41 comes into contact with the gear 40.

Here, in the main chassis 25, the reel shaft 17
A shaft 252 is installed approximately in the center of the 7-line wheel 33. A large-diameter gear 42 and a small-diameter gear 43 are rotatably supported on this shaft 252 from above in FIG. 9, respectively. A substantially ring-shaped friction member 44 is interposed between the gears 42 and 43.

Further, a stop 45 having a substantially cylindrical shape and having a flange 451 at the lower end in the figure is fitted into the lower part of the shaft 252 in the figure. The gear 43 is connected to the friction member 44 by the coiled spring 452.
The gear 42 is fully pressed. For this reason, the gear 42
and 43 are in an interlocking relationship. The gear 42 is meshed with the gear 35 of the flywheel 33, and the gear 43 is meshed with the fourth gear of the reel shaft 17. At this time, the gear 42 is in a position where it meshes with the gear 40 of the reel shaft 17, but as is clear from FIG.
and 40 are not meshed because they are shifted vertically in the figure.

On the other hand, of the pair of reel shafts 17 and 18, the reel shaft 18 that serves as the winding side during unwinding is supported by the main shear 725 as shown in FIG. That is, a through hole 253 is formed in the main chassis 25 at a portion where the reel shaft 18 is attached. This through hole 253
A member 46 is inserted into the bearing, which has a mounting portion 461 that is approximately cylindrical in shape and extends to the periphery of the through hole 253 at the bottom in the figure, and a screw or the like (not shown) is inserted between the periphery of the through hole 253 and the mounting portion 461. is fixed by. In this bearing, a rotating shaft 181 is rotatably inserted into the member 46.

Here, in the bearing, the part of the rotating shaft 181 that protrudes upward in the figure as well as the member 46 is inserted into the through hole 471 formed at the bottom of the locking member 47, which is formed into a substantially bottomed cylinder shape. ,
It is fitted onto the reel cap 48. Although the reel cap 48 is rotated integrally with the rotating shaft 181, the locking member 47 is independent of the rotating shaft 181. Further, in the bearing, a coil-shaped tin ring 49 is interposed between the upper end of the member 46 in the figure and the bottom of the lock member 47, and the rotating shaft 181 is connected to the lock member 47 and the reel camp 48 through the connection. The anus is energized upwards.

Further, a flange-shaped locking portion 473 having a tapered portion 472 that extends from the bottom to the top in the drawing is formed at the lower end of the locking member 470 in the drawing. This locking portion 473 is formed to have a smaller diameter than the through hole 2533 of the main chassis 25.
ing.

Additionally, in the bearing, a gear 50 having a small diameter is fitted into a portion of the rotating shaft 181 that protrudes downward in the drawing from the member 46. This gear 50 rotates integrally with the rotating shaft 181.

Here, the inside of the main chassis 25, the reel shaft 18
A shaft 254 is installed approximately in the center between the shaft 252 and the shaft 252.
ing. A mounting member 51 having a substantially cylindrical shape is attached to this shaft 254.
The shaft 254 is freely rotatable and slidably inserted in the axial direction of the shaft 254 in the vertical direction in FIG. A rewinding lever 52 and a gear 53 are fitted onto the mounting member 51. Furthermore, a coil-shaped spring 512 is interposed between the lower end of the mounting member 5 in the drawing and the washer 511 attached to the lower part of the shaft 254 in the drawing, so that the mounting member 5 is urged upward in the figure, and in this state the gear 53 is meshed with the gear 50 of the reel shaft 18. At this time, the gear 53 is in a position where it meshes with the gear 42, but as is clear from FIG.
3 and 42 are not meshed because they are vertically shifted in the figure.

Further, the rewinding lever 52 is a plate-shaped body, and one end thereof has the gear 53, the meshing part of the so, and the reel shaft 18.
A connecting portion 521 inserted through the through hole 253 of the main chassis 25 and interposed between the lower end of the locking member 47 in the figure.
is formed. Furthermore, the other end of the rewinding lever 52 extends to the reel shaft 17 side, and the tip in the extending direction engages with the flat surface of the gear 41 of the reel shaft 17 from above in the figure. A retaining portion 522 is formed.

Here, as shown in Fig. 6, the main chassis 25
A rotation shaft 255 is installed approximately in the center of the shaft. A lock lever 54 and a switch lever 55 are rotatably supported on this rotation shaft 255. That is, the lock lever 54 is connected to the first drive section 21 of the endogenous operator 21, as shown in FIGS. 7, 9, and 10 south.
2, the locking member 3 of the reel shaft 17
First to third engaging portions 541 to 543 that can engage with the tapered portion 372 of the locking member 47 of the reel shaft 18 and the tapered portion 472 of the locking member 47 of the reel shaft 18, respectively, are connected to the rotating shaft 255.
It is formed in a way that spreads out in three directions with a total center. The switch lever 55 has a substantially concave shape with the lock lever 54, and is provided so as to overlap the lock lever 54.
First to third engaging portions 551 to 553 that can engage with the respective tapered portions 215, 372, and 472 of 7 and 1B are formed to spread in three directions centering on the rotation axis 255. It is something. Furthermore, a fourth retaining portion 554 that engages with the leaf switch 56 for supplying power to the motor 27 is formed at the tip of the third retaining portion 553 of the switch lever 55 . When the switch lever 55 is rotated counterclockwise in FIG. 6, the leaf switch 56 is turned on by being pressed by the fourth engaging portion 554, and the motor 27 is driven to rotate. be. By the way, a protruding retaining piece 555 is formed on one side of the third retaining portion 553 of the switch lever 55. A coiled spring 556 is engaged with this protruding retaining piece 555 and a predetermined position of the main chassis 25, so that the switch lever 55 is urged to rotate clockwise in FIG. Therefore, the first to third engaging portions 551 to 553ir of the switch lever 55,
The valley taper portion 215°372.472 is suppressed.

On the other hand, a protruding retaining piece 544 is also formed on one side of the third retaining portion 543 of the lock lever 54. and,
A coiled spring 545 is engaged with this protruding retaining piece 544 and a predetermined position of the main chassis 25, so that the lock lever 54 is urged to rotate in the clockwise direction in FIG. There is. Therefore, the first to third engaging portions 541 to 543 of the lock lever 54 are connected to each tapered portion 215,
It is pressed to 372.472.

The main chassis 25 also has a reel axis 17°18Q.
) Nearby, shafts 571 and 572 are installed. These +l! t1571, 572 are formed at both ends of the stop slider 57, which is provided horizontally in FIG. 6 between the two shafts 17, 18.

They are loosely fitted into long holes 573 and 574, respectively. Therefore, the stop slider 57 is slidable in the left and right directions in FIG.

A protruding retaining piece 575 is formed on one side of the stop slider 57.

Here, in the main chassis 25, a shaft 5 is located at the upper part of the protruding retaining piece 575 of the stop slider 57 in FIG.
76 is installed! I'm here. The stop slider 57 has a substantially central portion that is completely wound around the shaft 576.
6, both ends of the torsion ring 5770 are held so that they return to the neutral position even if slid in either the left or right direction in FIG. . Further, at this neutral position, the protruding piece 578 formed at one end of the stop slider 57 is located near the tapered portion 372 of the locking member 37 of the reel shaft 17. Further, a grooved protrusion 579 formed on the other end of the stop slider 57 is located near the tapered portion 472 of the locking member 47 of the reel shaft 18.

In the above-described configuration, it is assumed that the playback operator 21 is operated to play back a tape. Then,
As previously explained with reference to FIGS. 6 and 7, the head chassis 31 is moved, the reproducing head 29 is brought into contact with the tape, and the pinch roller 30 is pressed against the cab stun 26 via the teeth. At this time, by pressing the playback operator 21 downward in FIG.
54 and the first engaging portion 541.5 of the switch lever 55
51 is pressed 'i''L.

Therefore, the lock lever 54 and the switch lever 55 are rotated in the counterclockwise direction in FIG. 6 against the biasing force of the tin rings 545 and 556. Then, when the regeneration operator 21 is operated to suppress it as shown in FIG. For this reason, the lock lever
54 is rotated clockwise n7 in FIG. 6 by the biasing force of the spring 545, and its first retaining portion 541 engages with the bottom surface portion of the first drive portion 212, and the regeneration operator 21 is at the operating position. It is something that is locked in place.

At this time, the switch lever 55 is pressed by the tapered part 215, and its first retaining part 551 is connected to the first driving part 2.
Pressed by 12) Matamatomasu i, Ru. Therefore, the fourth retaining portion 554 of the switch lever 55 turns on the leaf switch 56r, and the motor 27 is driven to rotate counterclockwise in FIG.

Then, the flywheel 33 is rotated in the same direction, and the rotational force is applied to the gear 35.42, the friction member 44, and the gear 43.4.
0 and the rotating shaft 171 are transmitted to the reel cap 38, and the reel cap 38 is rotated counterclockwise in FIG. 6, and the tape is played back.

Next, it is assumed that the fast forward operation button 19 is pressed as shown in FIG.

Then, the reel cap 38 of the reel shaft 17 is pressed downward in the figure, and the locking member 37 is accordingly slid downward in the figure against the biasing force of the spring 39. The locking member 37 is moved downward in the figure until its lower end in the figure still contacts the flange 361 of the bearing member 36. In this state, the tapered portion 372 of the locking member 37 causes the second retaining portion 5 of the switch lever 55 to
52 is pressed, the switch lever 55 is rotated counterclockwise in FIG.
The retaining portion 542 is engaged with the locking portion 373 of the locking member 37. Therefore, when the leaf switch 56 is turned on, the leaf shaft 17 is locked at the pressed position. At this time, as the reel shaft 17 is pressed, the rotating shaft 171 also moves downward in the figure, and the gears 40 and 41 fitted on the rotating shaft 171 also move in the same direction. . Therefore, the gear 41 separates from the gear 43,
Gear 40 comes to mesh with gear 42. Therefore, the rotational force of the flywheel 33 in the counterclockwise direction in FIG.
The tape is rotated at high speed in the counter-chronological direction during N, and the tape is fast-forwarded.

It is also assumed that the tape winding method is set to 7 and the rewind operator 20 is operated to suppress it. Then, as shown in FIG. 12, the reel cap 48 of the reel shaft 18 is pressed downward in the figure, and the locking member 47 slides downward in the figure against the biasing force of the spring ring 49. The locking member 47 is moved downward in the drawing until its lower end in the drawing comes into contact with the mounting portion 46 of the bearing member 46. In this state, the taper portion 472 of the locking member 47 allows the third retaining portion 5 of the switch lever 55 to
53 is pressed, the switch lever 55 is rotated counterclockwise in FIG.
The retaining portion 543 is engaged with the locking portion 473 of the locking member 47. Therefore, the leaf switch 56 is turned on, and the reel shaft 18 is pressed and locked at the intended position. At this time, the lower end of the locking member 47 in the figure presses the connecting portion 521 of the rewind lever 52 downward in the figure, so that the entire rewind lever 52 is slid downward in the figure. Therefore, the gears 50 and 53 are moved downward in the figure while remaining meshed, and at this time, the gear 53 is closed to the gear 42.
It meshes with. In addition, the engaging portion 522 of the rewinding lever 52
As a result, the gear 41 is slid downward in the figure against the biasing force of the tin ring 412, so that the gear 4 is moved downward from the gear 43.
He was released from F4iU. For this reason, the flywheel 33
The rotational force in the counterclockwise direction in Fig. 6 is the gear 35°42.5
3.50 and rotating shaft 181 full valve and reel cap 48
The reel cap 48 is rotated at high speed clockwise in FIG. 6, and the tape is rewinded.

Next, a case will be described in which the stop operator 22 is fully operated in the playback, fast-forwarding, and rewinding states. ffr, wa,
As mentioned above, this stop operation element 22 is supported by the ml cassette holder 28 so as to be slidable in the vertical direction in FIG. 13. However, the stop operation element 22 is prevented from being removed from the upper slide in FIG. 13 and is supported by the cassette holder 28VC.

Then, from the bottom surface of the stop operator 22 in Figure i13, μ,
An operating shaft 221 extends below the beef cow, and the lower end of the operating shaft 22 in the figure is attached to the bottom surface of a substantially conical driving part 223 after pushing through a coiled spring 222. It is worn.

Here, the first retaining portion 541 of the lock lever 54 also has a spring 54 on the tapered portion 224 of the driving portion 223.
45 (see FIG. 6).The stop operation element 22 is urged upward in FIG. 13 to a position where it is prevented from being removed by a spring 222.

Therefore, when the stop operation element 22 is pressed downward in FIG.
1 is moved in the vertical direction in FIG. The tab and lock lever 54 are rotated counterclockwise in FIG.

Here, in the playback, fast-forwarding, and rewinding states, as described above, either the first drive section 212 or the locking member 37.47 is connected to the corresponding first to third
It is locked by the engaging parts 541 to 543.

For this reason, even if the cheese recorder is in any of the above-mentioned operating states, the lock lever 54 is rotated counterclockwise in FIG. 6 by operating the stop operator 2. As a result, the lock is eventually released and the motor is in a stopped state.

Here, when the stop operator 22 is pressed downward in FIG.
The first retaining portion 541 of the lock lever 54 is regulated to a shallow position where it is not locked, and the stop operator 2
2 is locked in the operating position.

Here, the cassette tape recorder described in this basic groove bottom is equipped with an automatic stop mechanism that automatically stops the tape when it reaches the end. In other words, referring to Figures 6 and 9, Ryotsu 43
One end of a friction lever 58 is provided at the middle lower part of FIG. 9 via a well-known friction mechanism. This friction lever 58
When the gear 43 rotates tL, it is biased in the direction of rotation. An elongated hole 581 is formed at the other end of the Kotoe lever 58, and one end of the detection lever 59 protrudes from the elongated hole 5B1.
91 is loosely fitted. The detection lever 59 is rotatably supported by a shaft 592 protruding from the main chassis 25 at a substantially central portion thereof. Further, one side of the other end of the detection lever 59 is provided on the gear 42 and comes into contact with a side surface of the sudden cam portion 421 . Furthermore, two bottles 593 and 594 are protruded from the other end of the detection lever 59. Of these, the pin 593 faces the second locking portion 542 of the lock lever 54, and the other pin 594 can lock with the curved operating wall 422 formed on the flat surface of the gear 42. being done.

In the above-mentioned chipped state, the flywheel 33 and the gear 35 are rotated counterclockwise in FIG. 6, and thereby the gears 42 and 43 are rotated clockwise in FIG. Therefore, the friction lever 58 is biased clockwise in FIG. 6 by the rotational force of the gear 430, and the detection lever 58 is
9 is also biased clockwise in the figure with the shaft 592 as the center. At this time, the other end of the detection lever 59 is connected to the cam portion 42.
Since the shaft 592 is in sliding contact with the shaft 592, the shaft 592 eventually swings around the entire center of the shaft 592, and a stable reproduction state continues. When the tape reaches the end under such playback conditions, reel shaft 1
7 is stopped, thereby stopping the rotation of gears 41, 43. At this time, there is slippage between the gears 42 and 43. By stopping the rotation of the gear 430, no biasing force is applied to the friction lever 58 and the detection lever 59.

On the other hand, since the gear 42 continues to rotate, the cam portion 421
The detection lever 59 is rotated in the counterclockwise direction in FIG. 6 about the entire center of the shaft 592 by the length of the maximum diameter of the cam portion 59, and is stopped at that position. Then, due to the rotation of the gear 42, the outer part of the actuating wall 422 touches the detection lever 5.
9, and along the curved shape of the operating wall 422, the bottle 594 and the detection lever 59 are all further rotated in the counterclockwise direction in FIG. 6 from the above-mentioned stop position. At this time, the bin 593 of the detection lever 59 is connected to the lock lever 54.
The lock lever 54 is moved counterclockwise in FIG. 6 by l1OJ. Next, the playback operator 21 is unlocked at the operating position, and an automatic stop is effected.

Here, the action of the stop slider 57 will be explained. That is, in FIG. 14(a), the stop slider 57 is connected to the main chassis 25 as described above.
It is supported so as to be slidable in the direction of the arrow in the figure, and is normally held at the neutral position shown in No. 141m(a) by a torsion spring 577 shown in FIG. When the stop slider 57 is in its neutral position, the protrusions 578 and 579 formed on both ends of the stop slider 57 are aligned with the tapered portions 372 and 472 of each locking member 37.47 of the reel shaft 17.18 in FIG. ) is located in the lower middle part.

In this state, as shown in FIG.
It is assumed that the retaining portion 543 of the button is locked at the push-in position. Then, the tapered portion 4 of the locking member 47 of the reel shaft 18
72 fully suppresses the protrusion 579 of the stop slider 57, so the stop slider 57 is slid in the direction of the inner fabric in FIG. 14(b) against the biasing force of the torsion spring 577. At this time, the protruding piece 578 of the stop slider 57 is in a position where the bearing of the reel shaft 17 is approximately in contact with the member 36,
61 and the locking portion 373 of the locking member 37.

Therefore, in the rewinding state shown in FIG. 14(b), even if the fast-forwarding operator 19'f is not operated, the locking portion 373 of the locking member 37 of the reel shaft J7 is moved to the stop slider 57.
It is prevented from being pushed in at the normal push-in position, where the tab 90 is locked by the second engaging portion 552 of the claw 54. Also, contrary to the above, in the fast forward state where the reel shaft 17 is locked at the normal push-in position (-54), the protruding piece 578 of the one-stop slider 57 is pressed by the tapered portion 372 of the locking member 37. Therefore, the stop slider 57 slides to the left in FIG. 14(s) against the biasing force of the torsion spring 577 (m1). The bearing is located between the receiving part 461 of the part 46 and the locking member 4.
It is interposed between the locking portion 473 of No.7.

Therefore, even if the rewind operator 20 is not operated in the fast-forward state, the locking portion 473 of the locking member 47 of the reel shaft 18
However, the stock slider 57 comes into contact with the protruding piece 579, and is prevented from being pushed into the normal pushing position.

If you try to operate the fast forward υ and rewind operators J 9 and 20 when they are fully open, both reel shafts 17 and 18 will be pushed in, or the tapered portions of each lock member 37 and 47 will be pushed in. 372, 472 are fully inserted into the stone 7'' slider 57, so that both reel shafts 17 and 18 are prevented from reaching the normal pushing position #.

That is, only one of the reel shafts 17.18ff and 17.18ff is selectively locked in the push-in position, in short, the fast forward P and rewind operations 19.20
Pressing both sides is prevented.

[Embodiments of the invention]

In the cassette tape recorder having the basic configuration as described above, one embodiment of the present invention will be described in detail below with reference to all the drawings. That is, in FIG. 15, the playback operation element 21 is formed into an elliptical shape in plan, and the operation shaft 211 extends downward in the figure from the lower surface of one end thereof in the figure. Further, a through hole 216 is formed at the other end of the playback operator 2, and the through hole 216
A substantially cylindrical recording operation element 60 is loosely inserted therein. From the lower surface of the recording operator 600 in the figure, an operating shaft 60 extends downward in the figure.

Each operation shaft 211.601 of the playback/recording operation element 21.60 has a bearing attached to the cassette holder 28 and passes through each member 6, b. Here, on the lower surface of the operating shaft 211 of the playback operator 2 in the figure,
As described above, a first drive section 212, a shaft 213, and a second drive section 214 are provided. And this second
The bottom surface of the drive section 214 faces the base end 324 of the regeneration drive member 320.

Further, a flange portion 602 is formed at the lower part of the operating shaft 6010 of the recording operator 60 in the drawing. This flange portion 602 is engaged with an engaging portion 325 formed by horizontally bending the upper portion of the mounting portion 322 of the regeneration drive member 32 in the figure, as will be described later.

Further, the engagement portion 321 of the regeneration drive member 32 is engaged f.
'1. The playback head 29 is mounted on the head chassis 31.
In place of , a recording/playback head (hereinafter referred to as a recording/playback head) 6
2 is attached.

Here, the regeneration driving member 32 is supported as shown in FIG. 16. That is, in FIG.
Reference numeral 63 denotes a mounting base formed in a substantially U-shape. The base 63 of this mounting base 63 is attached to the cassette holder 28, as shown in FIG. 17. Both pieces 632 and 633 (16th
(see figure), the regeneration driving member 32 is connected to its engaging portion 321.
and the mounting portion 322 are provided so as to overlap each other, and the two pieces 632, 633 and the engaging portion 321. Mounting part 3
A rotating shaft 64 passes through 22, so that the reproduction drive member 32 is rotatably supported by a mounting base 63.

On the other hand, as shown in FIG. 15 again, the recording operator 60
A support shaft 65 is attached to the cassette holder 28 near the operating shaft 601 so as to be parallel to the operating shaft 60. The support shaft 65 has a so-called magnetic erase head 66 using a permanent magnet attached to one end thereof, and the other end of the erase lever 67 is loosely fitted into the support shaft 65.
- Rotatably supported. Further, a torsion spring 65 is wound around the support shaft 65, and the erasing lever 67 is biased to rotate in a direction in which the erasing head 66 recedes.

Here, a protrusion 671 is formed on the lower surface of the erasing lever 67 in FIG. This protrusion 671 can be engaged with a protrusion bottle 681 protruding from one end of the recording slider 68. Then, the recording slider 68 is moved to the main switch 25 as indicated by the arrow tqg□H in FIG.
It is supported so as to be slidable in one direction, and a bent piece 682 that engages with a recording/reproduction changeover switch (hereinafter referred to as a recording/reproduction changeover switch) 69 is formed at the other end. The recording slider 68 is set to arrow 1 when the recording/pressing change switch 69
When slid in the q direction, the tape recorder circuit (not shown) switches to the full recording state, and the recording slider 68 moves as shown by the arrow (
When slid in the direction of the mark, the tape recorder circuit section is switched to the playback state. Also, when the recording slider 68 is moved in the direction of arrow G, the protruding bin 68
1 presses the protrusion 67) of the erasing lever 67, and rotates the erasing lever 67 in a direction that advances the erasing head 66 against the biasing force of the torsion spring 651. However, the recording slider 68 is normally biased in the direction of arrow H.

Also, as shown in FIG. 17 again, the recording slider 6
A driving piece 683 is bent at the rear end of the main shear 725 so as to form a substantially tapered shape. Furthermore, a recording cam mounting base 70 is attached to the main chassis 25. This recording cam mounting base 777 has a shaft 70.
1 is supported, and a first apex 711 of a recording cam 71 having a substantially triangular side surface is rotatably supported on this shaft 701. Further, the second top portion 712 of the recording cam 71 is opposed to the lower portion in FIG. 17 of the flange portion 602 formed on the operating shaft 601 of the recording operation element 6o. Furthermore, a bottle 714 is provided protruding from the third top 71.9 of the recording cam 7, and this bottle 714 is connected to the recording slider 6.
It is fitted into a notch 684 formed at the lower part of the drive piece 683 of No. 8 in FIG. 17.

In the above configuration, it is assumed that both the playback and recording controls 21 and 60'fr are operated while recording is not being performed.

Then, by first operating the recording operator 60,
As shown in FIG. 18, the operating shaft 601 and the flange 602 are moved downward in the figure, and the flange 602 presses against the second top 712 of the recording cam 71. Therefore, the recording cam 71 is
8, the bottle 714 presses the notch 684 formed in the drive piece 683 of the recording slider 68 to the right in FIG. 15, so that the recording slider 68 moves in the direction of arrow G. Slide. Therefore, as described above, the erasing head 66 is advanced and comes into contact with the tape (not shown), and the tape recorder circuit section is switched to the recording state.

At the same time, by operating the playback operator 21, [1
As shown in FIG. 9, as described above, the second drive section 214
presses the base end 324 of the regeneration drive member 32, and the regeneration drive member 32 is rotated in the direction of arrow F in FIG. Therefore, the retaining portion 32 of the reproduction drive member 32 presses the head chassis 31'i, causing the head chassis 31 to rotate in the direction of arrow C. Therefore, the recording/reproducing head 62 is brought into contact with the tape and recording is performed here.

Here, as mentioned above, the bottom surface of the first drive section 212 of the playback operator 2 is located at the lock lever st<
(see No. 6o) and is locked in the operating position. On the other hand, the recording operator 60, as shown in the 20th chapter 1,
When operated downward in the drawing, the flange portion 602 moves lower in the drawing than the engaging portion 325 of the square drive member 32.

After that, the timing relationship is set so that the regeneration drive member 32 is rotated in the direction of arrow F in FIG. 20 by operating the regeneration operation element 21.

Therefore, in the recording state, the engagement portion 32 of the playback drive member 32
5 comes into contact with the upper surface of the flange 602 of the recording operator 60 in the figure, and the recording operator 60 returns to the non-operating position t'
The recording operation element 60 can be locked in the operating position.

Therefore, according to the configuration of the above embodiment, the recording operation element 60 is operated using the reproduction drive member 32 that moves the recording/reproduction head 62 in the direction of contacting the tape in conjunction with the operation of the reproduction operation element 2. Since it is locked at the position, there is no need to provide a separate member to lock the recording operator 60 at the operating position, and there is no need to increase the number of parts, so the cassette tape recorder can be made smaller and lighter. It can be promoted.

As shown in FIG. 21, in the playback state where the playback operator 21 is being operated first, the engaging portion 325 of the playback drive member 32 is in contact with the recording operator 60, as shown in FIG. Since it is located at the lower part of the flange 602 in the figure, even if the recording operator 60 is not operated, the flange 602 is located at the second position.
As shown by the dotted line in FIG.
5 and becomes inoperable, thereby preventing so-called follow-up recording.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, the recording operator can be reliably locked in the operation position with a simple configuration without increasing the number of parts, and is extremely favorable, which can effectively promote miniaturization. cassette chip recorder f
fe'.

[Brief explanation of drawings]

1(a) and 1(b) are front and side views showing the basic structure of a cassette tape recorder to which this invention is applied, and FIG. 2 is a perspective view showing the cassette lid of the cassette tape recorder. , Figure 3 is a perspective view showing the complete state of attachment of the fast forward and rewind operators to the cassette lid;
The figure is a perspective view showing the external appearance of the mechanism, head, and cassette holder of the cassette tape recorder, Figure 5 is a perspective view showing the cassette holder in Figure 4 in a fully open state, and Figure 6 is the mechanism of the cheap recorder. 7th block diagram showing details of
The figure is a perspective view showing the relationship between the playback operator and the head section.
The figure is a perspective view showing the state in which the restraint operator is operated.
Figures 1 through 1 are explanatory diagrams of the operation of the mechanism of the same cheap recorder, and Figure 13 is a perspective view showing details of the stop operator.
14(a) and 14(b) are operation explanatory diagrams showing the action of the force and the stop slider, FIG. 15 is a perspective view showing an entire embodiment of the cassette tape recorder device according to the present invention, and FIG. 16 is a perspective view showing a part of the same embodiment;
Figures 17 and 18 are side views for explaining the recording operation, and Figures 19 to 22 are diagrams for explaining the operation of the main parts of the same embodiment. 11... Cabinet, 12... Cassette lid, 13
... tape cassette, 14 ... tape cassette storage section, 15 ... mechanism storage section, 16 ... head section, 17
゜18...Reel axis, 19...Rapid feed operator, 2o
... Rewind operator, 21... Playback operator, 22...
・Stop operator, 23...Window part, 24...Support shaft, 2
5... Main chassis, 26... Gear gestan, 2
7...Motor, 28...Cassette holder, 29.
...Square head, 30...Pinch roller, 31...
Head chassis, 32... Student drive member, 33...
Flywheel, 34...belt, 35...gear,
36... Bearing is a member, 37... Lock member, 38...
...Reel cap, 39...Spring, 40 to 43...Gear, 44...Friction part side, 45...Stopper, 46...Bearing is member, 47...Lock member, 4
8... Reel cap, 49... Spring, 50
...Gear, 5...Mounting member, 52...Rewinding lever, 53...Gear, 54...Lock lever-155
... Switch lever, 56 ... Leaf switch, 5
7...stop slider, 58...friction lever, 5
9...Detection lever, 60...Recording operator, 61...
・Bearing is a part, 62... Recording head, 63... Mounting base, 64... Rotating shaft, 65... Support shaft, 66...
Erasing head, 67... Erasing lever, 68... Recording slider, 69... Recording/reproduction changeover switch, 70... Recording cam receiving stand, 71... Recording cam. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 (a) Figure 2 Figure 3 Figure 4 Figure 9 Figure 70 Figure 11 Figure 12 Figure 17 Figure 19 Figure 20 Figure 21 22 figure 3

Claims (1)

[Claims] a playback operator that can be locked in an operating position, a recording operator that can be operated together with the playback operator, and first and second controls that bring the head into contact with and out of contact with the tape in response to the operation and non-operation of the playback operator. and a driving member which is moved to the second position, is operated together with the playback operator at the second position, and is locked when the recording operator is in the fully operated position. Characteristic cassette tape recorder device.