JPH0313654B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-way cassette tape recorder and/or player that does not have a manual eject function, and particularly to improvements in its operability and structure.

Recently, in cassette tape recorders and players for home use, and even cassette players used as car stereos, there is a strong demand for a mechanism that can be switched to play or record mode, or vice versa, with a simple operation. .

For example, in the case of home use, all you have to do is insert the cassette into the cassette slot and set it in the designated position so that even small children can operate it.The end of the tape is automatically detected and the power is turned on. Some devices have a structure that automatically ejects the cassette while cutting.

Furthermore, in the case of a car stereo, since driving a car requires nerves, it is common to listen to the car stereo to calm those nerves, so the operation of the car stereo is required to be as simple as possible. For this reason, many of the configurations similar to those for home use described above are adopted.

In such an easily operated cassette tape recorder and/or player, the mechanism for detecting the end of the tape and ejecting the cassette is electrically operated, especially the device for detecting the end of the tape. Therefore, it should be noted that a power supply is always required. In other words, if the power supply is cut off before the tape reaches its end, the pinch roller will simply de-energize the motor or other electrical elements without ejecting the cassette, and the pinch roller will pass the tape to the capstan. It is maintained in a pressed state. This is undesirable because it causes deformation of the pinch roller made of rubber or the like.

The above-mentioned drawbacks can occur frequently, especially in the field of car stereos. That is, when driving while the car stereo is in play mode, the driver may remove the engine key when the drive is finished without paying attention to the condition of the cassette tape. By removing this engine key,
The car stereo was turned off. Then, the pinch roller remains in pressure contact with the capstan with the tape in the middle of being played, causing deformation of the pinch roller.

Therefore, if the power supply is cut off, the play (or record) state is automatically canceled.
In addition, it is desirable that the cassette be automatically ejected.

Note that some conventional devices have been configured so that simply inserting the cassette into a predetermined position puts it into play mode, and the cassette is ejected when the end of the tape is reached or the power supply is cut off. be. To achieve such a configuration,
Rather than simply ejecting the cassette, it is necessary to first remove the pinch roller or head from the cassette before ejecting the cassette. That is, in order to carry out this series of operations, it is necessary to operate many elements such as the pinch roller, head, and cassette in a certain order, and therefore a relatively large amount of energy is required. The conventional method uses this relatively large amount of energy to deform an appropriate spring using an artificial force applied when the cassette is first inserted into a predetermined position, and stores it as a repulsive force of this spring. It is something. Therefore, there was a drawback that the operation of inserting the cassette became very laborious. Therefore, if such a configuration were applied to, for example, a household device, the device itself would move as the cassette was inserted, making it impractical. In addition, for car stereos, the operation of inserting a cassette is heavy, and applying such force while driving is undesirable from a driving safety standpoint, and it may even be impossible to operate the cassette while driving. It was heavy.

Therefore, it is desirable to be able to insert the cassette with light force even though the cassette is ejected when the power supply is cut off.

To further simplify handling, the cassette is automatically ejected when the end of the tape is reached during tape play, and when the cassette is turned over and reinserted, playback resumes, and the tape is quickly rewound. When the end of the tape is reached, the performance is automatically restarted, and such an automatic discrimination function is desired. In this invention, if the power is turned off at the source (for example, the engine key) during playback, the cassette is ejected, and when the end of the tape is reached during playback, the tape is also ejected, but at the end of early winding, the tape is played from the start end. The aim is to provide an automatic mechanism for restarting, particularly suitable for car stereos. Other objects and features will become more apparent from the detailed description below.

FIG. 1 is a plan view schematically showing the internal structure of a cassette type tape recorder and/or player in a playing (or recording) state in which an embodiment of the present invention is adopted. FIG. 2 is a side view showing a cross section of the main part in the state shown in FIG. 1. FIG. 3 is a plan view schematically showing the internal structure with the cassette exposed. FIG. 4 is a side view showing a cross section of the main part in the state shown in FIG. 3. Further, Fig. 5 is a plan view of the fast rewinding state, Fig. 6 is a plan view of the fast forwarding state, and Figs. 7 to 11 show partial perspective views of various parts necessary for explanation. Only the main parts of the cassette tape recorder and/or player according to the present invention are conceptually shown. Incidentally, FIG. 14 shows the play (or record) state.

First, the configuration of this example will be explained mainly with reference to FIG. 1 and with reference to other figures. It should be noted that most of the elements described below are provided fixedly or in relation to the main base 1. Main base 1 has
First, a motor 2 is provided. The rotation of motor 2 is
The belt 3 transmits the signal to the first pulley 4 , flywheel 5 , and second pulley 6 . 1st pulley 4
rotates the first small gear 7 integrally, and the large gear 8 meshes with the first small gear 7. A second small gear 9 rotates integrally with the large gear 8. The rotation of this second small gear 9 is reduced compared to that of the first pulley 4. The third small gear 10 rotates integrally with the second pulley 6,
A reel take-up gear 11 meshes with this third small gear 10. A capstan 12 rotates integrally with the flywheel 5. In this manner, when the motor 2 rotates, each of the above-mentioned elements is constantly driven to rotate as shown by the arrows in FIG.

A pinch roller 13 is provided so as to be able to press against the capstan 12. pinch roller 13
is rotatably held by a pinch roller holding member 14, and the pinch roller holding member 14 is rotatably provided by a support shaft 15 (see FIG. 11). A pinch roller spring 17 is stretched between the pinch roller holding member 14 and the mediating lever 43, and the mediating lever 43 biases the pinch roller 13 against the capstan 12. In this way, when the pinch roller 13 comes into pressure contact with the capstan 12 via the tape, the tape is run at a constant speed.

The head 18 is provided so as to be able to press against the tape surface of a cassette loaded at a predetermined position. The head 18 is held by a head holding member 20 that is displaceably provided. The head holding member 20 is guided by the fixing pin 21 and the support shaft 15 and is displaced in the vertical direction in FIGS. 1 and 3.

The head holding member 20 is operated by a head spring 23 (FIG. 11) attached to a mediating lever 43.
The head 18 is pressed against the tape surface. The head holding member 20 includes a locking pin 24,
25, which engages with the locking pin 24 of the head holding member 20 and displaces the head holding member 20 upward when the pinch roller holding member 14 rotates, as shown in FIG. .

The cassette (not shown) is attached to the cassette holding member 2
6. The cassette holding member 26 is provided so as to be movable up and down. In this embodiment, the cassette holding member 26 is configured to be raised and lowered by levers 62 and 63 rotatably provided in an L-shape on the main base 1. The main base 1 is provided with fixed arms 60, 61 (see FIG. 7).
The shaft 30 is supported by the fixed arm 60. The lever 62 and the cassette ejecting member 32 are rotatably provided by the shaft 30. Further, the fixed arm 61 is provided with the lever 63.

The cassette lifting member 31 is T-shaped.
The left and right ends are rotatably connected to the levers 62 and 63, and the lower end (input part) 34 is
By engaging with the lever 64 and moving it left and right, the levers 62 and 63 are rotated and the cassette holding member 26 is raised and lowered. Further, since a tension spring 66 is provided between the cassette lifting member 31 and the fixed arm 61 provided on the main base 1, a spring force is always exerted in the direction of the insertion port.

The cassette expelling member 32 has an expelling spring 35
(Figure 2 or Figure 4) by arrow 36 (second
It is urged to rotate in the direction shown in the figure. In the ejecting state shown in FIG.
The cassette holding member 26 is prevented from descending by contacting a convex pin 65 provided on the side of the cassette holding member 26. In addition, an expelling piece 39 is formed on one side. Therefore, when the cassette ejecting member 32 is rotationally biased by the ejecting spring 35, when the cassette holding member 26 is raised as shown in FIG. Push the cassette out to the right. This makes it easy to grasp the cassette.

A switch 40 (FIG. 2 or 4) is provided in conjunction with the cassette ejection member 32 described above. This switch 40 is electrically connected to a switch 92 having a normally closed contact as shown in FIG. When the movable contact 41 is pushed by the portion 37 and connected to the fixed contact 42, the motor 2 is turned on. Conversely, as shown in FIG. 4, when the fan-shaped portion 37 of the cassette ejecting member 32 separates from the movable contact, the movable contact 41 separates from the fixed contact 42, and the motor 2 is turned off.

As described above, the pinch roller 13 is moved away from the capstan 12, the head 18 is moved away from the tape surface, the cassette holding member 26 is raised by the cassette lifting member 31, and the cassette ejecting member 3
A mediating lever 43, which is the driving source or starting source for a series of operations for ejecting the cassette by
(see FIGS. 8 to 10), and the rotation of this mediating lever 43 causes a switch 9 provided in the rotation path as shown in FIG.
Turn 2 on and off. The first lever portion 48 of this intermediate lever 43 is connected to the pinch roller holding member 14.
As shown in FIG. 3, the head holding member 20 is displaced. Mediator lever 43
The second lever part 47 acts on the input part 34 of the cassette raising member 31 by rotating the lever 64 clockwise in FIG. 3, and as shown in FIG. is moved to the left. Accordingly, the cassette holding member 2
6 is raised and switch 40 is turned off. At the tip of the first lever part 48 of the intermediate lever 43,
One end of the mediating lever spring 49 is connected.

The above-mentioned intermediate lever spring 49 is shown in FIGS.
As shown in the figure with some parts omitted, it is relatively long. The other end of this intermediate lever spring 49 is
It is attached to the end 67 of the main base 1. By using such a long intermediate lever spring 49, it is possible to obtain a tension as close to constant as possible over a relatively long extension/contraction distance. This is to minimize the property that the tension of the spring increases in proportion to the elongation rate, so by making the overall length of the spring as long as possible and minimizing the elongation rate, it is possible to keep the tension constant. We will try to achieve this as much as possible. In order to minimize the bulk of the intermediate lever spring 49, it is wound around two rotatable pulleys 51 (only one is shown in the figure), for example, and bent to change direction. Since the pulley 51 rotates while lightly following the expansion and contraction of the spring 49, the expansion and contraction will be spread over the entire length of the spring 49, just as in the state where the entire length of the spring 49 is stretched in a straight line.

As already mentioned, the partially toothed gear 52 is provided so as to be able to mesh with the second small gear 9, which is always rotationally driven by the rotation of the motor 2 (see FIGS. 8 to 10). A convex portion 54 in the form of a roller, for example, is provided at an eccentric first position on the top surface of the partially toothed gear 52 . This convex portion 54 is related to the first lever portion 48 of the mediating lever 43 and the leaf spring 80.
As shown in FIG. 11, the leaf spring 80 has a left base end 80a fixed to the lever 43 and a free end 80b biased clockwise.

At an eccentric second position on the lower surface of the partially toothed gear 52, an engaged portion 55 (see FIG. 1) in the form of a protrusion, for example, is provided.
is provided. In association with the engaged portion 55, for example, a lever-like engagement member 57 rotatably supported by a support shaft 56 is provided. This engaging member 57 is always urged (rotated counterclockwise) to a state (FIG. 3) in which it does not engage with the engaged portion 55 by an engaging member spring 58. The engaging member 57 is moved to the engaged portion 55 against the elasticity of the spring 58.
An electromagnet 59 is provided for displacing (rotating clockwise) into engagement with. Electromagnet 5
9 is a device that is always energized while power is supplied, such as an electromagnetic switch 60 (the first
(See Figure 3) is turned off, this energization is cut off. The electromagnetic switch 60 has a normally closed contact.

In the above configuration, the function and operation will be explained below. First, a case will be described in which the device enters the playing state by inserting a cassette. Before inserting the cassette, the 12th
This is the non-performance state shown in the figure. When the cassette is inserted into the cassette holding member 26 in this state, the cassette expelling member 32 is moved to the left in FIG. 4 while the tip of the cassette comes into contact with the expelling piece 39. At the end of this movement, the fan-shaped portion 37 of the expelling member 32 comes into contact with the movable contact 41 of the switch 40 and transfers the movable contact 41 to the fixed contact 4.
2. In response, the motor 2 rotates and the electromagnet 59 is energized. The second small gear 9 is rotated by the rotation of the motor 2, and the engagement member 57 is biased by the spring 58 due to the biasing of the electromagnet 59.
is rotated clockwise against the elasticity of the This state of the engaging member 57 is such that it can engage with the engaged portion 55 .

In addition, with respect to the second small gear 9, the partially toothed gear 52 is
Since the toothless portion 53 is in a state of opposing meshing at a position before the starting end 53b, the rotation of the second small gear 9 is transmitted to the toothless gear 52, and the gear 52 is rotated clockwise in FIG. Rotate to. In response to this rotation, the convex portion 54 rotates the mediating lever 43 clockwise in FIG. 3 while contacting the first lever portion 48 of the mediating lever 43. The end of this rotation corresponds to the state shown in FIG. That is, the second
The toothless gear 52 has a toothless portion 5 with respect to the small gear 9.
3, and the engaged portions 5
5 is engaged with the engagement member 57. The convex portion 54 is located beyond the point in relation to the third lever portion 48, and even if the tensile force of the intermediate lever spring 49 is applied, the convex portion 54 is prevented from rotating by the partially toothed gear 52, and Lever 43 is maintained in that state. At the same time, while the intermediate lever 43 is rotated as described above, the switch 92 is turned on and the cassette is pushed down as shown in FIG.

That is, when the second lever part 47 of the mediating lever 43 rotates clockwise, the lever 64 becomes free, the load on the input part 34 of the cassette lifting member 31 is reduced, and the lifting member 31 is moved by the tension spring 66. Therefore, it moves to the right (see FIG. 7) and lowers the holding member 26. Therefore, the mediating lever 43 is the first
When rotated as shown in the figure, the pinch roller 13 is pressed against the capstan 12 through the tape, the head 18 is pressed against the tape surface, and a play state is started. This state is the state shown in FIGS. 1 and 2.

In the device of this example, it is important that in this play state, the intermediate lever 43 is sufficiently biased clockwise to stretch the spring 49 and store energy for ejecting. Since this energy is stored by the small gear 9 rotating the partially toothed gear 52, it does not increase the operating force associated with inserting the cassette. Further, this energy is automatically used when the electromagnet 59 is de-energized and the engaging member 57 and the engaged portion 55 are disengaged.

For example, in the play state described above,
When the end of the tape in the cassette is reached and the tape stops running, the electromagnet 59 is momentarily de-energized by a well-known end detection device, and the engaging member 57 is pulled by the spring 58. , engaged portion 5
5 is disengaged. In response, the partially toothed gear 52 rapidly rotates clockwise by the action of the intermediate lever spring 49 via the first lever portion 48 of the intermediate lever 43 and the convex portion 54 that abuts the first lever portion 48 .
At this time, in response to the counterclockwise rotation of the intermediate lever 43, the first lever portion 48 rotates the pinch roller holding member 14 counterclockwise, thereby moving the pinch roller 32 away from the capstan 12. Then, in response to the rotation of the pinch roller holding member 14, the locking piece 24 locks onto the head holding member 2.
0 upward in FIG. 1 to move the head 18 away from the tape surface.

Further, at this time, the second lever portion 47 of the intermediate lever 43 that rotates counterclockwise collides with the lever 64 and rotates it clockwise, so that the lever 64 rotates clockwise.
The rising member 31, which abuts its input portion 34, moves to the left and raises the holding member 26. Then, when the cassette holding member 26 rises, the expelling piece 39 of the cassette expelling member 32 expels the cassette by the tensile force of the tension spring 35. At the same time, the switch 40 is opened, but since the switch 92 is in the ON state, the motor 2 continues to rotate. When the intermediate lever 43 reaches the position shown in FIG. 12, the switch 92 is turned OFF and the rotation of the motor 2 is stopped. will be stopped. The mediating lever 43 having such an action engages with the second small gear 9 at a position before passing the starting end 53b of the toothless portion 53 as shown in FIG. At this time, since the switch 40 and the switch 92 of the motor 2 are in an off state, the partially toothed gear 52 is not rotated.

The operation of ejecting the cassette when the electromagnet 59 is de-energized by the electromagnet switch 60 as described above can also be achieved when the power supplied to the apparatus is originally cut off. this is,
For example, this occurs when the engine key is removed from a car stereo. In this case, the rotational movement of the intermediate lever 43, unlike the above-mentioned rotational movement, settles at the dead center position in relation to the convex portion 54, that is, in the state in which the cassette is ejected as shown in FIG. In this state, the partially toothed gear 52 is at the second position passing through the terminal end 53a of the partially partially toothed portion 53.
It meshes with the small gear 9 in opposition. Therefore, even if the engine key is removed while the engine is in the play state, the pinch roller 13 will not continue to press against the capstan 12.

In the embodiment, as shown in FIGS. 1 and 3, it can be seen that the toothless portion 53 of the toothless gear 52 occupies a portion smaller than half of the entire circumference of the toothless gear 52. Therefore, if the positional relationship with the mediating lever 43 as shown in this embodiment is adopted, when the mediating lever 43 is rotated from the state shown in FIG. 3 to the state shown in FIG. Since it is in contact with the first lever portion 48 at a portion farther from the shaft 44, the required rotational force of the partially toothed gear 52 is relatively small, and energy can be stored effectively in the intermediate lever spring 49.

Next, the operation during fast rewinding will be explained based on FIGS. 5 and 8. Fast rewind is a state in which the fast rewind operating device 70 is pushed in the direction of the arrow in FIG. 5 in the play state of FIG. 1. That is, when the operating device 70 is pushed in against the tension spring 84, the operating device 70 is attached to the hook portion 69 of the lever 68, which is always rotated counterclockwise about the fixed shaft 85 by the tension spring 86.
The hook part 83 in the center of 0 is hooked.
At the same time, the bending part 71 of the operating device 70 pushes the third pinion support lever 72, so the lever 72 is rotated counterclockwise around the fixed shaft 73 as shown in FIG. Rotational force mediates reversing gear 74
The signal is transmitted to the reel winding small gear 75 via the . Therefore, the reel 75A is rotated clockwise and unwinded. At this time, the pinch roller 13 and head 18 are kept away from the tape. That is,
The inclined portion 82 of the operating device 70 comes into contact with a convex pin 81 provided on the pinch roller holding member 14 to rotate the pinch roller holding member 14, and the pinch roller holding member 14 displaces the head holding member 20.

The operating device 70 has a head 87 at its tip, which is inserted into the return path of the intermediate lever 43 when the operating device 70 is pushed. Therefore, when the tape reaches its end in this fast rewinding state and the electromagnet 59 is momentarily de-energized by the action of an end detection circuit (not shown), the engaging member 57 is once rebounded by the force of the spring 58 (FIG. 1). After rotating clockwise to disengage the partially toothed gear 52 from the engaged portion 55, the electromagnetic force of the electromagnet 59 causes the partially toothed gear 52 to rotate clockwise again. Therefore, the partially toothed gear 52 that receives the force from the intermediate lever 43 rapidly rotates clockwise. However, in this case, unlike in Fig. 1, the operating device 70
Since the head 87 of the media lever 43 is protruding,
The rotation in the counterclockwise direction is restricted at the position where it abuts against the head 87.

In this position, the cassette holding member 26 is lowered as in the play state. In other words, this is to prevent the tape from ejecting at the end of the tape during fast rewinding. At this time, the leaf spring 80 is
To compensate for clockwise rotation of the partially toothed gear 52 due to insufficient return of the gear. In other words, without the assistance of the leaf spring 80, the pinion 9 would face the toothless portion 53, and the toothless gear 5 would face the toothless portion 53.
Does not mesh with 2. Since the motor 2 is rotating at this stage, the small gear 9 again rotates the partially toothed gear 52 clockwise, and its convex portion 54 causes the intermediate lever 43 to rotate clockwise again. Then, the mediating lever 43 is held again at the position where the engaging member 57 engages with the engaged portion 55 again (the position where the spring 49 is lengthened). During this time, the lever 6 is
8 rotates clockwise, the engagement between the hook 69 and the hook 83 of the operating device 70 is released, and the operating device 70 is returned to its current position by the spring 84. This state is similar to that shown in FIG. 1, and therefore tape playback is resumed in the opposite direction. Note that if the power is turned off in this fast rewind state, the eject operation will not take place, but since the pinch roller 13 remains separated from the capstan 12, it is possible to deform the pinch roller 13, even if it is inconvenient that the cassette cannot be removed. There's no need to worry about letting it happen.

Next, functions and operations during fast forwarding will be explained based on FIGS. 6 and 9. Fast-forwarding is performed by pushing the fast-forwarding operation device 88 in the direction of the arrow in FIG. 8 in the play state of FIG. 1. That is, when the fast-forward operation device 88 is pushed in against the tension spring 89, the hook portion 69 of the lever 68 engages the hook portion 9 at the tip of the fast-forward operation device 88.
1 is hooked. At this time, the pinch roller 13 and head 18 are moved away from the tape. That is, the inclined portion 90 of the operating device 88 comes into contact with the convex pin 81 provided on the pinch roller holding member 14 to rotate the pinch roller holding member 14, and the pinch roller holding member 14 displaces the head holding member 20. let Therefore, the tape is transported at high speed in the same direction as when playing. Then, at the end of the tape, the electromagnet 59 is de-energized momentarily, so the cassette is ejected and the switch 40 is turned off, as in FIG.
is turned off, but since switch 92 is on, motor 2 continues to rotate. Therefore, by further rotating the mediating lever 43 clockwise, the convex portion 54 of the partially toothed gear 52 first rotates the lever 68 clockwise together with the mediating lever 43 to disengage the hook portions 69 and 91. The spring 89
to restore it. Thereafter, the tip of the mediating lever 43 comes into contact with the switch 92 to turn it off and stop the rotation of the motor 2. It should be noted that what was ejected at the end of the tape during fast forwarding was the operation device 88 and the operation device 7.
This is because there is no member corresponding to the head 87 of 0.

The electromagnetic holding means of this example includes an electromagnet 59, an engaging member 57, an engaged portion 55, a convex portion 54, and a partially toothed gear 52.
A blocking member 100 (FIG. 3) is further provided on the opposite side of the engaging member 57 to hold the intermediate lever 43 in a fixed position against the elasticity of the spring 49.
In the discharge state shown in the figure, the cassette holding member 26 cannot be lowered unless the electromagnet 59 is energized. This is to prevent, for example, a cassette inserted into a car stereo when the engine key is turned off from becoming impossible to remove. Of course, even in this state, it is clear that the engine can be ejected once the engine key is turned on and the intermediate lever 43 is brought into the state shown in FIG. 1 (this happens within a short time). It should be noted that the operating devices 70 and 88 each have a lock release function, and it is possible to shift from one lock state to the other lock state, or to release one lock state from the other and both to be in the release state. I would like to add something.

As described above, according to the present invention, tape play (or record) start and end operations can be performed very easily and reliably.

According to the present invention, this energy storage operation of the intermediate lever spring for accumulating energy with respect to the intermediate lever serving as a driving source or starting source for operating the mechanically actuating part is performed by a motor that rotates the flywheel. Since it is used for both purposes, the power source can be realized at low cost. In such a case, it is also advantageous that power can be transmitted together with the flywheel by one belt, if necessary. Further, since the rotational force of the motor is used as the power source for storing energy, instead of using the cassette insertion force, the cassette insertion operation can be performed very easily. In addition, by operating an integrated mediating lever that has various operating parts, it becomes a driving source or starting source, and each mechanical operating part is configured to operate in sequence, so reliable and accurate operation can be expected. I can,
For example, accidents such as ejecting a cassette with the tape sandwiched between the capstan and the pinch roller do not occur. In the play (or record) state, energy is always stored in the intermediate lever spring, so even if the power is cut off, this stored energy will move the head away from the tape surface. A number of operations can be performed in sequence, such as moving the pinch roller away from the capstan, then raising the cassette, and ejecting the cassette. This prevents the pinch roller from deforming.

Furthermore, during fast rewinding, the eject operation is avoided at the end of the tape and the tape automatically enters the play state, making it suitable for car stereos. Further, since a cassette cannot be inserted when the power is turned off, there is no problem of being unable to remove a cassette that has been inserted by mistake. This mechanism is particularly effective in a mechanism in which the power source for the manual eject function and automatic eject function is established only when the motor 2 rotates after power is turned on.

[Brief explanation of drawings]

1 to 11 are diagrams showing one embodiment of the present invention, FIGS. 1 and 2 are a plan view and a side view in a playing state, and FIGS. 3 and 4 are a plan view and a side view in an ejecting state. A side view, FIGS. 5 and 8 are a plan view and a perspective view of a main part in a fast rewind state, FIGS. 6 and 9 are a top view and a perspective view of a main part in a fast forward state,
7, 10, and 11 are partial perspective views of each part in the discharge state, FIG. 12 is a plan view of the non-playing state, and FIG. 13 is the switch 40 and the switch 92.
FIG. 14 is a conceptual diagram of the main parts of the cassette tape recorder and/or player according to the present invention. In the figure, 2 is a motor, 5 is a flywheel, 9 is a small gear, 12 is a capstan, 13 is a pinch roller, 14 is a pinch roller holding member, 15 is a spindle,
18 is a magnetic head, 20 is a head holding member, 26
31 is a cassette holding member, 31 is a cassette lifting member,
32 is a cassette expelling member, 43 is a mediating lever,
47 is a second lever part (second action part), 48 is a first lever part (first action part), 49 is a mediating lever spring, 52 is a toothless gear, 53 is a toothless part thereof,
54 is a convex portion, 55 is an engaged portion, 57 is an engaging member,
59 is an electromagnet, 70 is a quick rewind operating device, 71 is a bent portion thereof, 82 is a slope portion, 87 is a head, and 100 is a blocking member.

Claims (1)

[Scope of Claims] 1. An automatic mechanism for a cassette tape recorder and/or player, characterized by having each of the following elements and conditions (A) to (P). (A) a capstan and a flywheel rotated by a motor; (B) a pinch roller; (C) a pinch roller holding member that rotatably holds the pinch roller; (D) a magnetic head; (E) a magnetic head. (F) a cassette holding member that holds the cassette so that it can be raised and lowered; (G) a cassette lifting member that raises the cassette holding member; (H) a cassette that is held by the cassette holding member when raised. (I) a small gear rotationally driven in one direction by the motor; (J) a partially toothed gear that meshes with the small gear; (K) a partially toothed gear that meshes with the small gear; a convex portion provided at an eccentric position on the side surface of the partially toothed gear; (L) a mediating lever rotatably supported on a shaft fixedly provided near the partially toothed gear; and having the following elements: , (L-1) a first acting portion in contact with the convex portion; (L-2) displacing the head holding member in a direction in which the head moves away from the tape, and moving the pinch roller holding member so that the pinch roller is away from the tape. a second operating portion that sequentially moves the cassette in a direction away from the cassette, then raises the cassette holding member by the cassette lifting member, and then ejects the cassette by the cassette ejecting member in accordance with the rotation in one direction; (M) Rotating and biasing the intermediate lever in one direction so that the intermediate lever is swung by the rotation of the partially toothed gear while the first operating portion is in contact with the convex portion. (N) electromagnetic holding means for selectively holding the intermediate lever in a state where it is rotated in the other direction against the elasticity of the intermediate lever spring; (O) the intermediate lever is a mediating lever; a head that forcibly prevents rotation according to the elasticity of the spring;
a slope portion that rotates the pinch roller holding member to displace the pinch roller away from the capstan, and a slope portion that displaces the head holding member so that the head moves away from the tape; and a rotational force for fast winding on the reel. (P) a quick rewind operating device comprising a bending portion that transmits lever rotational force to transmit the rotational force of the lever; The mediating lever is rotated in the other direction while the convex portion is in contact with the first acting portion, and the mediating lever is held in a rotated state by the electromagnetic holding means against the force of the mediating lever spring. A mechanism in which the small gear faces the toothless portion of the toothless gear and is disengaged. 2. An automatic cassette tape recorder and/or player according to claim 1, characterized in that the electromagnetic holding means is equipped with a member that prevents the cassette holding member from descending when the electromagnetic holding means is not activated. mechanism.