JPS61260456A - Tape player - Google Patents

Abstract

PURPOSE:To switch rotational force transmission passage surely by expanding a cam face, where the first part is switched to the second part, of the first cam groove according as going way from a supporting shaft and expanding the similar cam face of the second cam groove similarly. CONSTITUTION:A cam plate idler 210 is arranged between an idler base PL 220 and a main base 100. The motion of the idler base PL 220 is controlled by cams 206 and 208 provided on the cam plate idler 210, and the cam plate idler 210 has two kinds of cam which control the motion of the idler base PL 220 and that of an idler base FF 230 and egages motions of the idler base PL 220 and the idler base FF 230 properly in accordance with reproducing and fast feeding of a magnetic tape. A shaft PL 221 as the revolving shaft of a gear PL 320 is provided on the idler base PL 220. A spring PL 222 is arranged between the idler base PL 220 and the gear PL 320. Thus, the rotational force transmission passage is switched easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in tape players, particularly automatic reciprocating tape players mounted on automobiles.

[Prior Art] The configuration and operation of a conventional automatic reciprocating recording and reproducing machine (tape player) will be described with reference to the drawings.

FIG. 16 is a plan view showing the state of a conventional tape player during playback. In Figure 16, main base 1 has 4
A pair of pinch rollers 3.3 sandwich the magnetic head 2 of the element.
- is placed. Further, a movable board 4 is linked to the main base 1 so as to move towards and away from the main base 1. On the moving board 4 are a motor 5, a pair of capstans 6 and 6 having a flywheel coaxially, and reel stands 7, 7.
Idlers 9.9- are interposed between the large diameter portion 8.8' of the capstan 6.6' and the reel stand 7.7'. Magazine guide 10 on main base 1.
When the tape magazine 11 is inserted along the 10 axis, the pilot bins 12, 12 of the movable board 4 are pushed by the front end surface of the tape magazine 11, and the movable board 4 floats. As a result, the magnetic head 2 engages with the tape in the tape magazine 11, and at the same time the capstan 6.6- and the reel shaft 13.13 move into the tape magazine 11, and one of the capstans 6.6' Engage one of the pinch rollers 3.3- with the tape sandwiched between them.

Also, the reel shaft 13.13- engages with the tape reel frame (reel hub) in the tape magazine 1-1, and the idler 9
．． 9' connects one of the large diameter parts 8.8' of the capstan and one of the reel stands 7, 7'', so that tape playback is automatically started in conjunction with the insertion of the tape magazine. configured.

Note that this reproduction state is locked when the set pin 14 of the movable board 4 engages with the hook 8IS16 of the first set lever 15 pivotally attached to the main base 1. Such a configuration is well known as the so-called Stahl system. Now, in FIG. 16, when the magnetic tape runs to the left, it is called a forward direction (F direction), and when it runs to the right, it is called a reverse direction (R direction). Therefore, regarding the tape drive mechanism, the part involved in forward running is called a forward drive system, and the part involved in reverse running is called a reverse drive system. In FIG. 16, the forward direction drive system 17 includes the pinch roller 3 on the left side of the figure, the capstan 6, the reel stand 7, and the idler 8, and the reverse direction drive system 17- includes the pinch roller 3' and the capstan on the right side. It includes a stun 6, a reel stand 7', and an idler 9-.

Switching between the forward drive system 17 and the reverse drive system 17' is performed as follows.

FIG. 17 is a diagram showing a mode of switching between the forward direction drive system and the reverse direction drive system. In FIG. 17, a control plate 18 is disposed on the main base 1 so as to be slidable laterally. ts
The m-plate 18 is linked to the reversing electromagnetic plunger 19 (see FIG. 16) so that it always slides alternately left and right each time it operates. The mourning board 18 has a pinch roller on one side edge! has a till lll1 power arm part 20.20-,
Each of these has a pinch row 53.3' operating bin 21.
．． 21- is linked. Further, idler control cam portions 22.22- are provided on the other green portion of the III control plate 18, and operating bins 23.23- of the idlers 9.9- are linked to these, respectively. The idlers 9, 9' each have a swing lever 24.
24”, these 1ml levers 24°24
A spring 25° 25- is connected to one end of the -, respectively, and the idler 9.9- is biased in the direction of coming into contact with the large diameter portion 8.8' of the capstan and the reel stand 7.7', respectively. . The other end is pivotally connected to the free end of the rotating arm 26, 26' whose base end is pivotally connected to the movable base plate 4, respectively, by the above-mentioned operating pin 23, 23 axis. These rotating arms 2
6゜26- is biased by the spring 27, 27 shaft in the direction to separate the idler 9゜9- from the reel stands 7, 7-, respectively, but when stopped, the operating bin 23, 23- is moved from the control plate 18 by the M In this regard, these pivot arms 26.26' are stopped by the large diameter section 28.28 of the pilot bin 12.12 against the spring 27.27.

According to this configuration, when the IIJIII plate 18 is in the left position as shown in the second plate 8, the operating bin 21' engages with the right pinch roller control cam part 20=, and the idler 1111w cam part 22 'From the operating bin 23
' will be leaving. As a result, pinch roller 3
' and idler 9' are separated from the capstan 6- and reel stand 7', respectively, and the reversal direction drive diameter 17' becomes inactive. On the other hand, the left pinch roller control cam section 20
As the operating bin 21 is withdrawn, the operating bin 23 engages with the idler control cam portion 22, and the pinch roller 3 and idler 9 are pressed against the capstan 6 and reel stand 7, respectively, and the forward drive diameter 17 is in the operating state. becomes. This allows tape playback in the forward direction.

When the reversing electromagnetic plunger 19 operates and the control plate 18 slides in the right direction, as shown in FIG. The diameter 17' becomes activated, thereby making it possible to play the tape in the reverse direction.In this case, as described above, the control plate 18 slides alternately left and right each time the reversing electromagnetic plunger 19 operates. A belt is placed between the motor 5 and the flywheel 29.29 so that the flywheel 29.29 rotates in opposite directions.

Next, I will explain the operation during high-speed driving. In the tape player shown in FIG. 16, the playback running direction of the tape drive mechanism is detected, and high-speed rotation is applied to the reel 87.7 shaft on either side of the forward drive system 17I3 or the reverse drive system 17'. A high-speed travel selection device 30 is provided for selecting a high-speed travel selection device 30. This selection device It30 is a control board 18Jp-
The cam follower 33 consists of a detection cam 32 and a cam follower 33, which are integrally formed first and second cam parts 31 and 31. 35 at one end. A substantially U-shaped retaining spring 36 is fixed to the rotating plate 35, and a high-speed intermediate wheel 37 is held between the roadside portions of the retaining spring 36. This middle wheel 3
As best shown in FIG. 21, reference numeral 7 indicates the common vicinity of the first transmission wheel 39 and the flywheel 29.29, which are located at the upper and lower ends of the shaft 38, respectively, in the common vicinity of the reel stand 7.7-. The second transmission wheel 40 located at In addition, the green portions of the guide windows 44 of the moving board 4 are respectively fitted into the grooves 42 of the other receivers.

In the above configuration, during forward playback, the control plate 18
is sliding to the left as shown in FIG. 17, so that the first cam portion 31 of the detection cam 32 is in co-operation with the cam follower 33. In this state, the operating lever 45 is rotated clockwise as shown in FIG. 22.

This will now be referred to as the first external operation. This operating lever 45 is arranged so that its long hole 46 is inserted into a support shaft 47 so that it can be pushed into the main base 1 and freely moved and rotated. An actuation lever 51 pivotally connected to the base 1 by a support shaft 50 is held between the base 1 and the base 1 . At the tip of the operating lever 51 are first and second set levers that are pivotally connected to the main base 1.
Release pin 5 facing each cam part 53, 54 of 15, 52
5 is planted. When the above-mentioned first external operation is performed on the operation lever 45, the protrusion 4 is moved as shown in FIG.
8 pushes the actuating lever 51, causing it to rotate clockwise, thereby pushing the cam portion 53 of the first set lever 15 with its release pin 55, causing it to rotate.
The hook portion 16 and the set bin 14 are disengaged.

As a result, the movable base plate 4 attempts to move to the stop position due to the bias of the return spring, but in the middle of the movement, the set bin 14 engages with the hook portion 56 of the second set lever 52, and as a result, the movable base plate 4 is moved to the intermediate position. locked in position. At this intermediate position, the tape magazine 11 is withdrawn to a position where the engagement between the tape and the magnetic head 2 is released, the capstan 6.6- is connected to the pinch rollers 3, 3-, and the idler 9.9' is connected to the reel stand. 7. From 7-, each of them leaves and cancels the constant speed tape winding function to enable high speed running.

When the movable substrate 4 is shifted to the intermediate position by the first external operation as described above, the aforementioned selection device 30 is
is activated, and regardless of whether the tape playback direction is forward or reverse, it will always be fast forward or rewind, but in this case it is configured to always rewind, and its operation is as described below. It is.

During playback in the forward direction, as shown in FIG.
8 slides to the left to operate the forward drive system 17.

The detection cam 32 is therefore ready with its first cam portion 31 to cooperate with the cam follower 33 . When the movable base plate 4 is shifted to the intermediate position as described above, the cam follower 33 rides on the first cam portion 31, thereby causing the rotating plate 35 to move to the first position.
As shown in Figure 8, rotate counterclockwise and rotate the intermediate wheel 3.
The first and second transmission wheels 39 and 40 of 7 are in pressure contact with the reel stand 7- and the flywheel 29' included in the reverse direction drive system 17, respectively, and the rotation of the flywheel 29' is transmitted through the intermediate wheel 37. The information is transmitted to the reel stand 7 axis, and the reel stand 7'' is rotated in reverse at high speed to rapidly rewind the tape from the forward direction to the reverse direction.

On the other hand, when reproducing in the reverse direction, as shown in FIG. 19, the control plate 18 slides rightward to operate the reverse direction drive system 17-. In this case, the detection cam 3
2 has its second cam portion 31 ready for cooperation with the cam follower 33. Therefore, in this case, when the moving base plate 4 is shifted to the intermediate position, the cam follower 33 is moved to the second cam portion 31.
To ride on the shaft, the rotating plate 35 is rotated clockwise as shown in FIG. 20, and the first and second transmission wheels 39,40 of the intermediate wheel 37 are each included in the forward drive system 17. The tape is brought into pressure contact with the reel stand 7 and the flywheel 29, and the reel stand 7 is rotated forward at high speed to rapidly rewind the tape in the forward direction than in the reverse direction.

Next, the tape fast forwarding operation will be explained. Operation lever 4
Similarly to when the actuating lever 51 is rotated counterclockwise through the first external operation described above, that is, when the actuating lever 51 is rotated counterclockwise, the actuating lever 51 is rotated clockwise. That is, the operating lever 51 is held between the protrusions 48 and 49 of the operating lever 45, and the operating lever 4 is arranged so that when the operating lever 45 is roughly rotated counterclockwise, the changeover switch S1 is operated.
5 and a changeover switch S1 fixed to the main base 1 are connected by a lever 57, and a detection switch S2 as shown in FIG.
A pressing bottle 58 is provided protruding from the side surface of the movable substrate 4 so that the detection switch S2 is activated once every time the movable substrate 4 shifts between the reproduction position and the intermediate position. As shown in FIG. 25, these switches 81 and 82 are arranged in series with the energizing circuit of the electromagnetic plunger 19 for reversing, and a tape end detector 59 is arranged in parallel with the series circuit.

In such a configuration, when the operating lever 45 is rotated counterclockwise as shown in FIG.
9 pushes the operating lever 51, and this operating lever 51
is rotated clockwise in the same manner as in the first external operation described above. This counterclockwise operation of the operating lever 45 will now be referred to as a second external operation. This rotation of the actuating lever 51 causes the movable board 4 to be regenerated (transferred from the I2 position to the intermediate position, and in conjunction with this, the selection device 30 is activated.
In the case of an external operation, a fast forward function is performed instead of the rewind function described above. Its operation is as follows.

When the operating lever 45 is rotated counterclockwise as shown in FIG. 23, the contact a of the changeover switch S1 is transferred from the contact 6b to the contact C. As a result, when the movable board 4 is shifted from the reproduction position to an intermediate position by this second external operation, the cutting rod 60 of the detection switch S2 is pushed by the press pin 58 during the shift. When it is in the closed state, the reversing electromagnetic plunger 19 operates once and the control plate 18 slides. As a result, the reproduction traveling direction of the tape drive mechanism is once reversed. For this purpose selection device 3
0 detects the direction opposite to the running direction during the y4 dice.

If the running direction during playback is the forward direction, 1111
13 The III plate 18 slides to the left as shown in FIG.
When the external operation is performed, as described above, the reversing electromagnetic plunger 19 slides the Ill WJ plate 18 to the right of the reversing direction traveling position as shown in FIG. - is ready to cooperate with the cam follower 33. Therefore, by shifting the moving plate 4 to the intermediate position, the moving plate 35 rotates clockwise as shown in FIG.

For this purpose, the first and second transmission wheels 39 . of the intermediate wheel 37 .
40 are in pressure contact with the reel stand 7 and the flywheel 29 included in the forward direction drive system 17, and by rotating the reel stand 7 at high speed, the tape is made to run at X speed in the same direction as the running direction during playback (positive direction). (fast forward).

On the other hand, when the running direction during playback is the reverse direction, the control plate 18 slides to the right as shown in FIG. At this time, when the external operation 12 is performed, the control plate 18 is slid to the left of the forward running position by the reversing plunger 19 as shown in FIG. , the first cam portion 31 is connected to the cam follower 33
Therefore, when the movable substrate 4 is moved to the intermediate position, the rotating plate 35 rotates in the counterclockwise direction as shown in FIG. 18. For this purpose, the intermediate wheel 37
The first and second transmission wheels 39 and 40 are in pressure contact with the reel stand 7' and the flywheel 29 shaft included in the reverse direction drive system 17 shafts, respectively, and rotate the reel stand 7' at high speed to adjust the speed at which the tape is played. Fast advance 1 step, that is, fast forward in the same direction as the running direction (reverse direction).

II that L invention tries to solve! Point 0jji] A conventional automatic reciprocating tape player is constructed as described above, and performs magnetic Arp playback, forwarding, rewinding, etc.

However, in recent years, a high-performance tape player equipped with a microcomputer and the like has become necessary even in the case of an automobile-mounted tape player. Accordingly, there are demands for tape players to be smaller in size and to have improved performance such as wah. However, in the conventional configuration, a magnetic head is installed between the motor that serves as the drive source and the reel stand for tape winding, and the magnetic head is connected between the motor and the flywheel so that the flywheels rotate in opposite directions. It was necessary to attach a belt, which made the configuration of the device complicated. In addition, in order to transmit the rotational force to the reel stand, the rotational force from the flywheel is applied to the reel stand using first and second transmission wheels that rotate simultaneously around the same rotation axis. There is. therefore,
Distortion of the rotation of the reel stand (reel rest) etc. H
The signal is transmitted to the flywheel and vice versa, causing problems with wah performance.

Conversely, since the rotation of the flywheel that rotates in response to the rotational force from the motor is transmitted to the reel stand, the rotational force is also transmitted to the reel stand for tape ev#In, and the end of the tape At times, large torques were applied, which could cause damage to various parts, such as seizure of the motor.

In addition, a complicated separate tank is required for switching the tape running direction and the running 153ig I&, and the l1ll&1 portion cannot be centralized for mt, 11, so the structure is small, compact, and simple. Reliable torque transmission Iw4
It was difficult to compose the .

It is therefore an object of the present invention to eliminate the above-mentioned drawbacks and to provide a small, compact and high performance tape player.

[Means for solving the problem] The tape play V according to the present invention includes a No. 1611 rotatably provided around a support shaft, a second gear that meshes with the first gear, and a second gear that meshes with the first gear. a first w4Ill plate having a rotation axis of 2611[ and a first stopper pin and rotatably provided on the support shaft; and a 1311 wheel rotatably provided around the support shaft; , has a 14-tooth green mesh that meshes with the third gear, and a second stopper pin that has a rotating shaft of the fourth gear and is disposed at a position opposite to the first stopper pin with respect to the support shaft. and a second III rotatably provided on the support shaft.
Board and reel rest included 1) l! ! 5th and 6th #111, which are rotatably provided around the reel rest axis and can be driven by the second and fourth VA wheels, respectively! An 18th reel rest device provided with a reel rest device, and an 18th! S and a 21st pin having a width larger than the diameter of the first stopper pin.
and a second cam groove consisting of a first portion having the same width as the diameter of the second stopper pin and a second portion having a larger width. When the first stopper pin is positioned in the first portion of the first cam groove, the second stopper pin is positioned in the second portion of the second cam groove, and the fourth gear and the sixth gear engage with each other. while when positioned at the second point, the first stopper pin is located in the second portion of the first cam groove, and the second stopper pin is located in the first portion of the second cam groove. This tape player is provided with a cam plate that enables the second gear and the fifth gear to mesh with each other.

Preferably, the cam surface transitioning from the first portion to the second portion of the first cam groove has a shape that becomes wider as it gets farther from the support shaft, and the cam surface transitioning from the first portion to the second portion of the second cam groove The cam surface that transitions to another section also becomes elongated as it moves away from the support shaft.

[Operation] The first rotational force is reliably transmitted from the reel rest drive device to the reel rest device by the first gear, the second gear, and the fifth gear, and the reel rest is transmitted by the third gear, the fourth gear, and the sixth gear. The second rotational force is reliably transmitted from the drive device to the reel rest device. Furthermore, the single cam plate allows the transmission path of the rotational force from the reel rest drive device to the reel rest device to be easily and reliably switched.

[Embodiments of the Invention] Hereinafter, a case in which the present invention is applied to an automatic reciprocating tape player for use in an automobile will be described with reference to the drawings.

FIG. 1 shows the L length of a tape player which is an embodiment of the present invention.
It is a figure which shows the aspect of a reproduction state. Here, the regenerated state 1 shows a state in which the capstan F435a and the pinch roller F420a on the right side of FIG. 1 are in pressure contact.

In FIG. 1 of the tape player, the tape player has a cassette case (
A main base 100 to which each member for setting a tape magazine, playing back a tape (constant speed running), fast forwarding (high speed running), etc. is attached, and a main base 10
A motor 101 that is placed on one side of 0 (at the top of the drawing) and serves as a driving source, a reel rest device 200 that is placed approximately in the center of the main base 100, and a reel rest device 200 that transmits the rotational force from the motor 101 to the reel rest device. 1, and a tape running control system 400 which is installed along the other side (lower part in FIG. 1) of the main base 100 and runs the magnetic tape at a constant speed or at high speed. The motor 101 has a two-stage motor pulley 102, and the reel rest device 200 has a pair of reel rests arranged parallel to the other side of the main base, ie, reel rest F201a and reel rest R201b. . The reel rest drive device 300 has a bin rU301 that serves as a support shaft. The drive device 300 is a motor 101
and the axes of each of the reel rests 201a and 201b.

A sub-base 103 is attached to a predetermined position of the main base 100, and includes a drive arm 104 and a sub-motor (not shown) that serves as a drive source for the drive arm 104.
, serves as a mounting base for a reduction gear (not shown) for applying the rotational force of the sub-motor to the drive arm 104. The drive arm 104 has a bin 0 installed on the sub-base 104.
It is provided rotatably about 105 as an axis, and a bottle DA 106 is installed at one end thereof. Movement of the drive arm 104 is controlled by a drive arm regulating arm (not shown) attached to the sub-base 103. The movement of the drive arm 104 is transmitted to the tape travel-11111 system 400 via a link PR107 having a bifurcated claw at one end that engages with the bin DA106. Link PR107
has a pin LP 108 planted at the other end, which slides along the side wall of the sub-base 103 in synchronization with the movement of the drive arm 104 and transmits the movement to the link cam 402.

Tape running III III series 400 Ha, link PR1
The bottle CL110 has a long groove that engages with the bottle LP108 that is set up on the main base 100.
The link cam 402 includes a link cam 402 that is rotatable about the axis. A bottle LC 403 is installed at a predetermined position of the link cam 402 and engages with a long hole formed at a predetermined position of the cam plate head 404 to transmit the movement of the link cam 402 to the cam plate 404. do. The cam plate head 4゜4 is a bottle CF installed on the main base 100.
111a and the bin 0R111b have guide grooves 411a and 411b in which they engage, respectively, and can slide in the directions of arrows F and R in FIG. Furthermore, the cam plate head 404 includes a cam F415a and a cam R415b for controlling the functions of the pinch roller F42Qa and the pinch roller R420b, respectively, and for retracting the magnetic head 151 from the tape playback position when the magnetic tape 150 is fast forwarded. cam H421, and a bottle CH422 that engages with the long groove of the cam plate direct 430 is installed at a predetermined position. The pinch roller F420a has a roller PF425a that engages with the cam F415a, and the pinch roller F420a rotates the magnetic tape when playing the magnetic tape in the direction of the white arrow F (positive direction) in FIG. In order to press the capstan F435a against the capstan F435a, a biasing force is applied, for example, by a spring (not shown) in the clockwise direction in the drawing. Further, the roller PF425a is connected to the cam F4 provided on the cam plate head 4O4 so as not to press the magnetic tape 150 against the capstan F430a during playback in the direction of the white arrow R (reverse direction) in FIG.
15a. Capstan F430a.

Each capstan R420b has a flywheel F4
70a, rotates around the central axis of the flywheel R470b. The flywheel F47Qa and the flywheel R470b both receive rotational force from the motor 101 via the main belt 170 and rotate in the same direction. The pinch roller R420b moves in the direction of the white arrow R in the drawing (
(reverse direction) During reproduction, a biasing force in a counterclockwise direction is applied by, for example, a spring. Further, the O-ra PR425b is provided at a position where it engages with the cam R415b provided on the cam plate head 404 so as not to press the magnetic tape 150 against the capstan R430b during playback in the clockwise direction (forward direction) in the drawing. It will be done. A head roller H431 that engages with the cam H421 is provided at a predetermined position on the base head 432. The cam base head 432 has guide grooves that engage with the bin HFI 15a, bin HR 115b, and pin HC 115C, which are set on the main base 100, respectively. This base head 432 is the magnetic head 1
51 in contact with the magnetic tape 152, the force of the spring head 434 constantly moves it forward toward the cassette case (tape magazine) (from the bottom to the top in the drawing).
It is possible. Also, when feeding the tape ♀, the roller H421 that engages with the cam H421 of the cam plate head 404
slides to the top of cam H421, and spring head 3
The magnetic head 151 is moved back and forth from the position at the time of reproduction against the urging force of 4. One end of the spring head 434 is hung on the bottle S l-1121 set up on the main base 100, and the other end is hung on the base head 432, and the spring head 434 is hung on the base head 432 by its elastic force. bias in the direction. A plate direct 430 containing a long groove that engages with a bottle CH422 set on the cam plate head 404 is rotatably provided around the bottle PD122 set on the main base 100 as a pivot, and is provided with a long groove that engages with a bottle CH422 set on the cam plate head 404. It rotates in conjunction with the sliding movement of the cam plate head 404. Also, 'Plate Direct 43
0 is the bottle P planted on the plate lever idler 440
It has a cam DF436a and a cam DR436b that abut the LF441a and the bin PLR441b, respectively, and transmits the movement to the plate lever idler 440 via the cam DF436a and cam DR436b. The plate lever idler 440 has a long hole and a long groove that respectively engage the bins P1131 and L1132 that are set on the main base 100, and uses these as a guide to move along the arrow PL in the drawing in conjunction with the movement of the plate direct 430. or in the FF direction (in the vertical direction of the drawing). Further, the plate lever idler 440 is urged in the direction of arrow FF (downward in the drawing) by the urging force of the spring PL459, and the bin PLF 441a and the bin PLR 441b, which are set up on the plate lever idler 440, are pushed into the cam of the plate director 430. Surface cam DF436a, cam DR4
It is brought into contact with one or both of 36b.

Further, the plate lever idler 44043 and the lever idler 450 have a long groove that engages with the pin PLL 451 installed on the lever idler 450, thereby controlling the movement of the lever idler 4.
50. The lever idler 450 is rotatable around a bin L1132 set up on the main base 100, and is connected to the plate lever idler 440 via a bin LL451 set up so as to engage the plate lever idler 440 in the long groove. Rotates in conjunction with sliding motion.

Further, the lever idler 450 has a pin CC452 planted so as to engage with a long hole provided in the cam plate idler 210, and transmits its movement to the cam play 1 to the idler 210 via the pin CC452. . The cam plate idler 210 has a long hole that engages with a bin CC 452 installed on the lever idler 450, and moves 1 m wJ in conjunction with the rotation of the lever idler 452. In addition, the cam plate idler 210 is connected to the bins Me-1161 and IB-2162 installed on the main base 100.
The thick arrow PL in the figure has guide grooves that engage with each other.
and FF direction (horizontal direction in the drawing).

Further, the cam plate idler 210 has a cam hole consisting of a wide part and a narrow part, that is, a cam PL206 and a cam F.
It has F208. Due to the movement of the cam plate idler 210, the reel rest drive system ml! 300 is equipped with a reel rest! The rotational force from either one of the reel rest drive devices 101 of the I200 is transmitted.

Reelless UL 1 round 1 11 Figure 2 is a sectional view showing the detailed structure of the reel rest drive V& In FIG. 2, the reel rest drive device 3
00 rotates around a shaft idler (bin I U ) 301 installed on the main base 100 as a central axis. A shaft portion of an idler pulley 310 that receives rotational force from the motor 101 via the idler belt 18o (see FIG. 1) is subjected to MW on the shaft idler 301. The idler pulley 310 rotates around the shaft idler 301. A metal 311 is lightly press-fitted into the lower side of the shaft portion of the idler pulley 310 in order to smooth the rotation of the pulley 310 and maintain the initial state (state without shaft wear etc.). On the upper surface of the idler pulley 310, a friction body 312 (felt in this embodiment) is provided as a slip mechanism (which causes the idler to slip when a rated torque or more is applied). The rotational force of the idler pulley 310 is generated by this felt 31.
2 to the FF base 313 located at the center of the shaft of the pulley 310. FF base 313 is pulley 3
It is rotatable using the middle part of the shaft of No. 10 as a rotation axis. The cylindrical lower part of the gear idler PL314 is press-fitted into the upper part of the shaft of the pulley 310. Therefore, gear idler PL31
4 performs the same rotation as pulley 310. A spring F is installed between the gear idler PL314 and the FF base 313.
An F base 315 is provided. Spring FF base 3
One end of 15 is brought into contact with gear idler PL314, and the other end is brought into contact with FF base 313 via washer 316. The spring FF base 315 pushes down the FF base 313 by its elastic force, and the FF base 313
is pressed against the felt 312. The friction torque i generated by this pressure contact force is used as the torque for half-winding the tape via the gear PFF 330, and is also used to prevent damage to each member (such as seizure of the motor 101) at the end of tape winding.
Two are used. The washer 316 is provided between the spring FF base 315 and the FF base 313 so that the rotation of the FF base 313 is not transmitted to the spring FF base 315. A stopper collar 317 is press-fitted into the cylindrical upper part of the gear idler PL314. Therefore, the stopper collar 317 is connected to the gear idler PL314.
．． The same rotation as the idler pulley 310 is performed. An idler base PL220 is interposed between the stopper collar 317 and the gear idler PL314.
220 is rotatable around the outer periphery of the stopper collar 317 as a rotation axis. A cam plate idler 210 is disposed between the idler base PL220 and the main base 10o. Movement of idler base PL220 is regulated by cams 206 and 208 provided on cam plate idler 210. Sunarichi, cam plate idler 21
0 is idler base PL220 and idler base F
It has two types of cams that control the movement of the F230,
The movements of the idler base PL220 and the idler base FF230 are appropriately engaged depending on whether the magnetic tape is reproduced or fast-forwarded. A shaft PL221 serving as a rotation axis of gear PL320 is installed in idler base PL220. A spring PL222 is placed between the idler base PL220 and the gear PL320! ! 2 will be given. One end of the spring PL222 is connected to the idler base PL220.
The elastic force of the gear PL320 urges the gear PL320 downward, and the gear PL320 is brought into pressure contact with the upper ring 223 provided on the shaft PL221. As a result, gear PL3
In addition to eliminating variations in the vertical position of the gear PL320, the friction torque generated by the elastic force of the spring PL222 causes the idler base PL to
Generates a force to rotate 220. The teeth of gear PL320 mesh with gear idler PL314, and shaft PL
221 as the rotation axis, gear idler PL314
This is an intermediate transmission member that transmits the rotational force of the reel-less l-device T200 to the slip gear 250 (not shown in Figure 12).A gear idler FF 340 is press-fitted onto the upper outer periphery of the 13 wheels of the FF base 3. As a result, the gear idler FF340 and the FF base 313 perform the same rotation.The gear idler FF340 and the FF base 31
3, an idler base FF230 is rotatably inserted.

The idler base FF230 is rotatable around the middle part of the FF base 313, and its movement is controlled by the cam FF208 provided with the cam plate idler 210&:
113. Gear FF is installed on the idler base FF230.
A shaft FF 231 serving as a rotation axis of FF 330 is installed. A spring FF335 is disposed between the gear FF330 and the idler base FF230. Spring FF
One end of the gear 335 is brought into contact with the idler base FF230, and its elastic force urges the gear FF330 upward to bring it into pressure contact with the upper ring 232 provided on the shaft FF231. This eliminates variations in the vertical position of the gear FF330, and the friction torque generated by the 94 force causes the idler base FF to move in the rotational direction of the gear FF330.
Generates a force to rotate 230. Idler base F
A stopper pin 234 is installed in F230. During fast forwarding of the magnetic tape, the stopper pin 234 comes into contact with an adjustment mold provided on the main base 100, and connects the reel gear 260 (not shown in FIG. 2) of the reel rest device and the gear FF3.
This bottle has the function of a stopper that allows adjustment of engagement with 30.

Figure 3A shows the idler base PL, bottle PL and shaft P.
FIG. 3B is a plan view showing a state in which L is planted, and FIG. 3B is a side view of FIG. 3A. The idler base PL220 is the slip gear 25 of the reel rest device during magnetic tape playback.
It is a holding plate for the gear PL320 that meshes with the gear PL320 (see Figure 5), and a small bowl for the stopper collar 317! ! Use it as the rotation axis,
The round hole 222 also does not impede the rotation of the stopper collar 317.
′ approximately in the center. Also, when playing a magnetic tape, the reel rest device's slip gear 1"'250 and gear PL32
Meshing with 0 fJ4! The corner R2 that comes into contact with the adjustment claw provided on the main base 100
23 and corner F224.

Bin PL205 planted on idler base PL220
is a cam groove provided in the cam plate idler 210 in order to engage the slip gear 250 and the gear PL320 during magnetic tape reproduction, and to disengage the slip gear 250 and the gear PL320 during single winding of the magnetic tape. 206. The shaft PL221 installed on the idler base 220 is connected to the gear PL32.
0 rotation axis.

Structure of idler base FF Figure 4A shows the stopper pin on the idler base FF.

It is a top view which shows the aspect which planted the bottle FF and the shaft FF. FIG. 4B is a front view of FIG. 4A, and the idler base FF230 is a holding plate for the gear FF330 that meshes with the reel gear 260 (see FIG. 5) of the reel rest device during fast forwarding of the magnetic tape.
The inner and outer diameters of the FF base 313 are used as rotating wheels, and a round hole 235 that does not impede the rotation of the FF base 313 is provided approximately in the center. The stopper pin 234 is a pin installed on the idler base l''F230, and is connected to the reel gear 260 and the gear during fast forwarding of the staple.
It functions as a stopper that comes into contact with an adjustment mold provided on the main head 100 to enable the FF 330 to engage y4m. Bin FF207 is idler base FF23
A cam groove 208 is provided in the cam plate idler 210 to engage the reel gear 260 and the gear FF 330 during fast forwarding of the magnetic tape, and to disengage the engagement between the reel gear 260 and the gear FF 330 during magnetic tape playback. engage with. Shaft FF231
is a bin installed on the idler base FF230, and is the rotating shaft of the gear FF260.

As described above, during magnetic tape reproduction, the reel rest drive device 1300 drives the reelless I-fi through the gear P L 320 by the rotation of the idler base PL 220.
Giving rotational force to 7711, fast-forwarding poems on magnetic tape,
Idler base FF230 can be rotated freely and gear F>
-330, the rotational force is transmitted to the reel rest device.

Figure 5 is a sectional view showing the detailed configuration of the reel rest device. Reel rest F201a in Figure 1.

Both reel rests R201b have the configuration shown in FIG. 5, and one of them is driven by the reel rest drive device shown in FIG. 2. The configuration of the reel rest device will be described below with reference to FIG. 5. .

A bottom reel 240, which serves as a support for the reel rest device, is attached to a predetermined position on the main base 100. A shaft reel 241 serving as a rotation axis of the reel rest device 200 is installed on the bottom reel 240 . The inner cylinder of the reel gear 260 is press-fitted into the lower part of the shaft of the reel rest 201. The reel gear 260 is a tape winding drive source during tape fast forwarding, and receives rotational force from the gear FF 330 of the reel rest drive device 300 to perform the same rotation as the reel rest 201. At the top of the reel gear 260, a slip gear 250 is attached to the axis of the reel rest 201. be done. The slip gear 250 is connected to the reel rest drive station 30
0 gear PL320 and reel rest 2
It rotates around the axis 01 and serves as a tape winding drive source during magnetic tape playback. A spring reel 249 is disposed between the reel gear 260 and the slip gear 250.

One end of the spring reel 249 contacts the reel gear 260, and the other end contacts the slip gear 250. The slip gear 250 is urged upward by the elastic force of the spring reel 249, and the I edge member (actually made of felt in the m example) that serves as a slip mechanism is bonded to the lower surface of the reel rest 201.
245. The rotational force of the slip gear 210 is applied to the reel rest 201 by the frictional force generated by this pressure contact force. The felt 245 has the function of a slip mechanism (slips when a rated torque or more is applied), and the felt 245 has a slip gear 250 handle rest 201 function.
Smoothly absorbs rotation differences. The reel rest 201 is attached to the shaft reel 241! It serves as a base for winding the magnetic tape, which is rotated by the rotational force of the slip gear 250 in the reproduction mode and by the rotational force of the reel gear 260 in the fast-forward mode. The inner cylinder of the reel key 243 is located 1a on the outer periphery of the upper part of the shaft of the reel rest 201.
be fitted.

The outer periphery of the shaft of the reel rest 201 has a hexagonal shape, and the inner chamber of the reel key 243 also has a hexagonal shape. The reel key 243 is slidable up and down along the axis of the reel rest 251 and rotates in the same manner as the reel rest 201. This has been done conventionally. A spring key 244 is arranged between the reel rest 201 and the reel key 243. The lower end of the spring key 244 is brought into contact with the reel rest 201, thereby urging the reel key 243 upward and pressing the upper end of the reel key 243 against the lower end of the reel top 242. As a result, when the reel hub (not shown) of the cassette case comes into contact with the reel key 243 when the cassette case is attached, the reel key 243 moves elastically downward, allowing smooth installation of the cassette case. The reel top 242 is press-fitted onto the upper part of the shaft of the reel rest 241, and its inner cylinder serves as a rotation bearing for the reel rest 101. A washer 248 and a spring washer 247 are disposed between the bottom reel 240 and the reel gear 260. Spring key 1?247 is a reelless I-device with that bullet! 200 upward, the reel top 242 is brought into contact with the upper wheel 251 provided on the upper part of the shaft reel 241, and the vertical position of the slip gear 252 and reel key V260 is stabilized, and the reel rest! i[20
Apply appropriate pack tension to 0. The washer 248 provided between the spring reel 247 and the reel gear 260 is an interposition for applying appropriate bank tension to the reel rest 1i 1200 using the elastic force of the spring key t247.

1111 of the motor FIG. 6 is a diagram showing a path for transmitting the rotational force of the motor to the reel rest drive device and the capstan. In FIG. 6, a two-stage motor pulley 102 is provided on a rotating shaft 190 of a motor 101. As shown in FIG. The motor 101 can be controlled to rotate clockwise and counterclockwise, and during fast forwarding of the magnetic tape, its rotation is 111tl! 1 effect, resulting in faster rotation than during playback. 2 stage motor pulley 1
02 independently transmits the rotation of the motor 101 to the flywheel 470 and the pulley 310 of the reel rest drive VTIF. Main belt 1 to flywheel 470
The rotational force of the motor 101 is transmitted to the motor 91 via the idler belt 180 to the pulley 310.
01 rotational force is transmitted. The flywheel 470 rotates about the capstan 435 as a rotation axis. As seen from FIG. 6, the direction of rotation of motor 101 and the direction of rotation of flywheel 470 and pulley 310 are the same.

FIG. 7 is a diagram showing details of the transmission path of each part that transmits the rotation of the motor to the reel rest device during magnetic tape reproduction. However, the portion of the reel rest drive device for magnetic tape early spring is omitted. The rotation of the motor 101 is transmitted from the motor pulley 1o2 to the pulley 310 via the idler belt 180. The rotation speed of the motor 101 is reduced by the diameter ratio of the motor pulley 102 and the pulley 310. Next, the rotation of pulley 310 is
Gear idler PL31 press-fitted into the upper part of 10
4 to the slip gear 250 of the reel rest device via gear Pl-320. The rotation speed of this reel rest 201 is determined by the slip gear 250 and the gear idler P.
Generally, when playing back a magnetic tape, the rotational speed of the slip gear 250 should be higher than the rotational speed of the reel rest 201 to ensure the winding of the magnetic tape. is necessary. In order to absorb this rotational speed difference, in this embodiment, the slip gear 250 is pressed against the felt 245 by using the elastic force of the spring reel 249,
There, the magnetic tape is dried in the sun while sliding smoothly, and a winding torque is generated for the magnetic tape.

Operation weight 'till (\) The operation during L playback will be explained below with reference to the drawings.

As shown in FIG. 1, during playback, the drive arm 104
The bottle DA106, which is planted in the bottle DA106, is locked at the F position. Accordingly, the link PR107 engaged with the bin DA106 and the link cam 402 engaged with the bin LP108 of the link PR107 rotate clockwise and are locked. Therefore, the cam plate head 404 is at approximately the terminal position in the direction of arrow F.

Since a gap is created between the roller H431 and the cam 421, the base head 432 is slid and locked by the biasing force of the spring head 434 at a predetermined position for magnetic tape reproduction. Since the pinch roller F420a has a gap between the roller PF425a and the cam F415a, the magnetic tape 150 is pulled into the capstan F4 by the clockwise rotating force.
35a. On the other hand, the pinch roller R420b rotates clockwise because the roller PR425b is in contact with the cam R415b. Therefore, pinch roller R420b
does not press the magnetic tape 150 against the capstan R435b and is not involved in the running of the magnetic tape. Next, the cam plate head 404 slides in the direction of arrow F, and the bin CH4
Plate direct 430 engaged with 22 rotates clockwise.

The cam DR436a moves the plate lever idler 440 against the biasing force of the spring PL459 to move the plate lever idler 440 to the bin PL-F44.
1a is slid and locked in the direction of arrow PL. As a result, the raised pins LL451 and CC452 of the lever idler 450 that are engaged with the long grooves of the plate lever idler 440 are rotated counterclockwise, and the cam plate idler 210 is almost at the end in the direction of the thick arrow PL. To position. In this state, the motor 101 rotates counterclockwise. Therefore, as shown in FIG. 6, the main belt 170 and idler belt 180, which are hooked on the motor pulley 102 provided on the motor shaft 190, also rotate counterclockwise. As a result, the flywheel F470a and the flywheel R470b on which the main belt 170 is attached also rotate counterclockwise. Therefore, the capstans 435a and 435b also rotate counterclockwise, and the magnetic tape 150 runs in the direction of the white arrow F in FIG. The magnetic tape 150 fed out by the capstan F435a is wound onto a reel rest F201a made of the members shown in FIG.

The manner in which the reel rest F201a winds up the magnetic tape 150 is as follows. The idler belt 180 shown in FIG. 6 is hung around the pulley 310 of FIG.
Pulley 310 rotates in the same counterclockwise direction as motor 101. Gear idler P press-fitted into this pulley 310
L314, the FF base 313 which is pressed against the pulley 310 via the felt 312 by the elastic force of the spring FF base 315, and the gear idler FF 340 which is press-fitted to the FF base 313, both rotate counterclockwise. At this time, the gear PL320 meshing with the gear idler PL314 has a spring PL22.
2 generates a clockwise rotating force, while the idler base PL220 is given the same counterclockwise rotating force as the pulley 310. Similarly, gear F
A force is generated in F330 to rotate clockwise due to the elastic force of spring FF335, and the idler base F
F230 tries to rotate counterclockwise. However, when the cam plate idler 210 is positioned on the arrow PL side in FIG.
207 is located in the dark part of the narrow groove of the cam FF208. As a result, rotation of the idler base FF230 is prevented, and the gear FF330 is locked at a substantially intermediate position between the reel rest F201a and the reel rest R201b, and cannot mesh with either reel gear. On the other hand, the bin PL205 of the idler base PL220 is located at the wide portion of the cam PL206 and rotates in the same direction as the rotation of the pulley 310.

FIG. 8 is a plan view showing how the gear PL meshes with the slip gear of the reel rest F, and is a partially enlarged view of FIG. 1. As seen from FIGS. 7 and 8, the rotation of the motor 101 passes through each member to the reel rest F20.
1a. Here, gear PL320
Both the slip gear 250 and the slip gear 250 are gears, and depending on the manner in which they mesh, they can generate abnormal noise and cause uneven writing on the magnetic tape. This point must be taken into consideration particularly in magnetic tape playback devices that combine a large number of components. Therefore, in order to ensure meshing between the gear PL320 and the slip gear 250, in this embodiment, a corner F224. Corner R223 (see Figure 3A) and pawls F that come into contact with each and enable fine adjustment of gear meshing.
185a and a claw R185b are provided on the main base 100 (see FIG. 8).

Note that the transmission path of the rotational force from the motor 101 to the reel rest 201 is as shown in FIG.

15iLL Next, the R reproduction operation of the magnetic tape will be explained. However, R playback requires capstan R435b and pinch roller R.
420b are in pressure contact with each other.

FIG. 9 is a plan view showing the mode during R reproduction.

In FIG. 9, during R playback, the sub-bass 10
The drive arm 104 is rotated counterclockwise by a drive motor (not shown) provided in the bin DA10.
6 is locked at the R position. In conjunction with this operation, the link cam 107 similarly rotates counterclockwise, and at the same time, the cam plate head 404 moves approximately 1f4 in the direction of arrow R in FIG.
Located at #iI.

At this time, there is a gap between the O-ra H431 and the cam H421, and the base head 432 is slid and locked by the biasing force of the spring bed 434 at a predetermined position for magnetic tape reproduction. Roller PF425a is cam F415a
Since the pinch roller F420a is rotated counterclockwise, it has no involvement in the running of the magnetic tape.

On the other hand, pinch roller R42013 is roller PR425
A gap is created between the magnetic tape 150 and the cam R415a, and the magnetic tape 150 is brought into pressure contact with the capstan R435b by the counterclockwise rotating force. Next, the cam plate head 404 is located at the end in the direction of arrow R in FIG.
The plate direct 430 engaged with the plate lever idler 422 rotates counterclockwise, and in this case, the cam DR 436b is attached to the plate lever idler 440.
is slid and locked in the direction of arrow PL against the biasing force of spring PL459. The position of the plate lever idler 440 at this time is the same am as when playing the magnetic tape 150 in the direction of the white arrow F (positive direction) described above. Therefore, the cam plate idler 210 is located approximately at tt'm in the PL direction of the thick arrow.

During R reproduction, the motor 101 rotates clockwise in order to bring the pinch roller R420b into pressure contact with the capstan R435b and to run the magnetic tape 150 in the direction of the white arrow R. Therefore, reel rest R201
b also rotates clockwise, as described below.

Referring to FIGS. 2, 5, and 7, motor 10
1 rotates clockwise, pulley 310 . Gear idler PL314. It can be seen that gear idler FF340 rotates clockwise together. Gear idler PL314
The elastic reaction force of spring PL222 generates a counterclockwise rotational force on gear PL320 that is meshed with gear PL320, and the same clockwise rotational force as pulley 310 is generated on idler base PL220. Similarly, a force to rotate the gear FF330 in the counterclockwise direction is generated by the elastic force of the spring FF335, and
The idler base FF230 attempts to rotate clockwise.

In Figure 110, gear PL is meshing with reel rest R! ! 9 is a partially enlarged view of FIG. 9. FIG.

As seen from Figure 10, idler base FF23
The pin FF207 of 0 is located between the narrow grooves of the cam FF208 of the cam plate idler 210, while the pin PL205 of the idler base PL220 is located in the wide part of the cam PL206. From this k, idler base PL220 and gear PL32 rotated in the same clockwise direction as pulley 310.
0 meshes with the slip gear 250 of the reel rest R201b, making it possible to wind the magnetic tape 150. In addition, as in the case of L regeneration, in order to bring gear PL320 and slip gear 250 into predetermined meshing, corner R223 of idler base PL220 is connected to main base 100.
It is made to come into contact with a claw R185b provided in the.

In addition, in the above description, the pinch roller 420a
, a drive motor is used to switch the pinch roller R420b, and the other motor is used to run the magnetic tape and remove the lint. This allows the drive motor to be used not only as a drive source for switching the pinch rollers, but also for automatic suction of the cassette case, setting for playback, and automatic ejection. The purpose is to change the running direction of the magnetic tape by changing the direction, and to eliminate the members involved in this process. However, the rotation control system of the motor 101, the transmission path of the rotational force from the sub-motor to the drive arm, and its operation control system do not constitute a part of this invention. Further, by disposing the motor 101 in a position directly facing the magnetic head 101 with the cassette case in between, the influence of the motor 101 on the flywheel F470a and the flywheel R470b becomes equiaxed.

Figure 11 is a detailed sectional view showing the transmission path of rotational force from the motor to the reel rest during fast forwarding of the magnetic tape. However, parts for the reproducing operation (constant speed running of the magnetic tape) in the reel rest drive device are omitted. first,
Referring to FIG. 11, the rotational force transmission operation during rapid forwarding will be described.

Rotation of the motor 101 is transmitted from the motor pulley 102 to the pulley 310 via the main belt 180. The rotation speed of the motor 101 is determined by the motor pulley 102 and pulley 310.
is slowed down by the ratio of the diameters of This pulley 310
To do this, use the elastic force of the spring FF base 315 to
The F base 313 is pressed with the felt 312 in between. In addition, the gear idler FF34 is attached to the FF base 313.
Since 0 is a press-fit liquid cylinder, the rotation of the pulley 310 causes the FF base 313° and the gear idler FF340 to rotate at the same time via the felt 312, and the rotational force is transmitted to the gear FF3.
30 to the reel gear 260 of the reel rest device. Since reel gear 260 and reel rest 201 perform the same rotation, the rotation speed of reel rest 201 is determined by the pitch diameter ratio of reel gear 260 and gear idler FF 340. The reel gear 260 is press-fitted into the reel rest 201, and the magnetic tape 15
For zero winding, the reel gear 260 and the reel rest 201 perform the same rotation. The reason why the felt 312 is used is to ensure that the magnetic tape 150 is wound up and the slip mechanism is activated by the felt 312 to detect the end of the magnetic tape and protect each member. It is desirable to prevent slippage during winding. Therefore, it is desirable to separately provide a winding torque for reproduction and a winding torque for early numbers, and to set the winding torque for early numbers to a high value.

The twelfth factor is a diagram showing how the magnetic tape is fed in the direction of the white arrow F (positive direction) in a tape player in which each member shown in FIG. 1 is disposed. The operation of each member during fast forwarding of the tape will be described below with reference to FIG.

A drive motor (not shown) provided on the sub-base 103 moves the bin D△106 of the drive arm 104 to R.
Or it is rotated from position F to position C and locked. The positions R2C and F of the bin DA106 are detected by a sliding switch provided on a cam (not shown) that rotates the drive arm 106. However, the details of this position sensing do not constitute this invention. When the bin DA106 is locked at position C, the bin LP108 of the link PR107 engaged therewith rotates the link cam 402. next,
Bin LC403 of link cam 402 locks cam plate head 404 at point 111 C between arrows F and R. At this time, the head roller H4 provided on the base head 432
31 rests on the slope of cam H421 and spring head 4
It moves against the urging force of cam H421 and is locked at the top of cam H421. As a result, the magnetic head 151 is slightly retreated from the playback position, so that a large drag force is not generated when the magnetic tape 150 is released early. Note that in FIG. ,
Although a mode is shown in which it is possible to detect between songs on a music tape, depending on the shape of the cam H421, it is possible to completely separate the magnetic head 151 from the magnetic tape 150. In addition, the roller PF425a of the pinch roller F420a and the O-ra P of the pinch roller R420b are
R425b is the cam F4 of the cam plate head 404, respectively.
15a and cam R415b, and the pinch roller F
420a is separated from the capstan F435a, and the pinch roller R420b is separated from the capstan R435b, so that they do not take any part in the rapid forwarding of the magnetic tape.

Next, since the cam plate head 432 is locked at the 0 point of the arrow, the cam DR430 that is engaged with the bottle CH422 planted on the cam plate head 432 is also locked at the midpoint of the rotation range. do. At this time, the bin PLF 441a provided in the plate lever idler 440 is
F436a1. On the other hand, the pins PLR441b abut against the cams DR436b, and thereby the plate lever idler 440 is locked in the direction of arrow F'F by the biasing force of the spring PL459. Accordingly, the pins LL451 and CC45 of the lever idler 450 engaged with the major key of the plate lever idler 440
2 rotate clockwise, and the cam plate idler 2
10; Lock in the wa part in the FF direction indicated by the thick arrow.

In this state, move the magnetic chip 7150 by the white arrow Fb in the figure.
The motor '101 is rotated counterclockwise in order to move the vehicle in the early spring direction (high speed running). At this time, the flywheel F
470a and the flywheel R470b are both rotating counterclockwise, but as mentioned above, the pinch roller F
Since the pinch roller 420a and the pinch roller R420b are not pressed against the capstan F435a and the capstan R435b, they do not participate in the early spring removal of the magnetic tape 150 at all. Therefore, the first winding of the magnetic tape 150 is performed by the rotational force of the reel rest F201a. When the reel rest F201a is driven to rotate, the pulley 310. in FIG. 11 is operated as in FIG. Gear idler FF340. Gear idler PL314 is both motor 1
It rotates in the same counterclockwise direction as 01. Also, gear P
As L320 and gear FF330 rotate clockwise, idler base PL220 obtains clockwise rotational force due to the elastic force of spring PL222, and spring FF
The idler base FF230 obtains clockwise rotational force with the elastic force of 335. As can be seen from FIG. 12, the cam plate idler 210 is connected to the thick arrow FFfl11. : [Stopped, idler base PL220 bin PL205
is located between the narrow grooves of the cam PL206, and rotation of the idler base PL220 is prevented, and the gear PL320 is locked at an approximately intermediate position between the reel rest F201a and the reel rest R20-1b, and does not mesh with either reel gear. Can not. Also, the bin F of idler base FF230
F207 is located at the wide portion of the cam FF208 and rotates in the same direction as the pulley 310 rotates. This condition is the first
This is best shown in Figure 3, but in Figure 13,
The part for constant speed running of the magnetic tape is omitted. As a result, the gear FF330 meshes with the reel gear 17260 of the reel rest F201a, as shown in FIG.
The rotation of the motor passes through each member to the reel rest F201.
is reliably transmitted to a. The transmission path of the rotational force at this time is shown in FIG.

It is well known that when the gear FF 330 and the reel gear 260 of the reel rest F201a are engaged with each other, both rotate at high speed, and even a slight misalignment of the gear FF 330 and the reel gear 260 of the reel rest F201a causes a large abnormal noise. Therefore, the book′
In the ji embodiment, as best seen in FIG.
This makes it possible to adjust the engagement.

2221111L When the motor 101 is rotated clockwise in the locking and rotating state of each member shown in FIG. 12, the main belt 170 causes both the flywheel F470a and the flywheel R470b to rotate clockwise. However, as in the case of FIG. 12, it is not involved in the running of the magnetic tape 150 at all. However, the pulley 310 rotates clockwise due to the idler belt 180, and the gear idler P
L314. The gear idler FF340 also rotates clockwise. Therefore, gear FF330 rotates counterclockwise, and idler base FF230 rotates clockwise due to the elastic force of spring FF335.

Figure 14 shows the motor rotating clockwise and reel rest F.
FIG. 3 is a plan view showing a state in which a tree is harvesting early spring in a clockwise direction. As seen in FIG. 14, the gear FF330 meshes with the reel gear 260 of the reel rest R201b, and the rotation of the motor is reliably transmitted to the reel rest 201b via each member. At this time as well, as shown in FIG. 13, gear FF330 and reel rest R201
In order to properly mesh with the reel gear 260 of No. 11, a stopper pin 234 installed on the idler base FF 230 is attached to a claw R192 provided on the main base 100.
It makes contact with the metal and ensures proper meshing.

As described above, early spring removal of a magnetic tape is achieved by locking the drive arm 104 at the zero point by the drive motor (not shown) and moving the head roller H43'1 of the base head 432 with the cam, regardless of the magnetic tape playback direction. This is possible by attaching it to the top of the cam H421 of the plate head 404. Furthermore, when the motor 101 rotates counterclockwise, the reel rest F201a picks up the magnetic tape early, and when the motor 101 rotates clockwise, the reel rest R201a
1111 picks up the magnetic tape in early spring.

In the above explanation, the i! Gear idler PL314 and gear idler FF installed so as to connect
Although the pitch circle of 340 is changed to enable faster winding of the magnetic tape, in this stirrup, the speed of the motor 101 is changed to enable even higher speed winding. Although not shown, the rotational speed of the motor 101 is switched by a switch linked to an operation button and a circuit.

In addition, each component is protected when the magnetic tape is collected early.

As described above, the pulley 310 and the felt 312 are caused to slip at their contact surfaces in order to achieve this.

Figures 15A to 15C are diagrams showing a method of detecting the end of a magnetic tape. FIG. 15A is a configuration diagram of the tape II edge control using the beam rest device, in which the emitted light from the photo interrupter 2900 passes through the detection hole provided in the reel gear 260 and hits the slip gear 250,
The weak reflected light has reached the light receiving element of the photo interrupter 290 +! FIG. In FIG. 15A, slip gear 250 receives rotation from motor 101 and continues to rotate even at the end of magnetic tape reproduction (see FIG. 7). In addition, in order to efficiently absorb the emitted light from the photointerrupter 290, the reel gear 260 is made of a low reflectance material, preferably a black material. The reel gear 260 uses a reflective member, preferably a white member, in order to reliably reflect the emitted light from the photo-interrupter 290. A plurality of holes are provided at equal intervals for the emitted light to pass through.The photointerrupter 290 includes a light emitting element that emits light and a light receiving element that senses the light that is reflected by the light hitting an object.Substrate 291 is an insulating member disposed on the bottom reel 240 and having a conductor on its surface.

In FIG. 15B, the part of the reel gear 260 in FIG. 15A where the hole is not provided is located above the photointerrupter 290, and the emitted light from the photointerrupter 290 reaches the light receiving element of the 7-interrupter with almost the same intensity! FIG. 3 is a partial diagram showing how the IJ is reached.

FIG. 15C is a diagram showing a state in which the reel gear 260 alone is viewed from below, and a plurality of holes through which the emitted light from the photo ink converter 290 passes are provided at intervals of the chopsticks.

Next, the operation for detecting the end of dryness will be explained. When the reel gear 260 with holes shown in FIG. 15C is provided in the reel rest device, when playing back a magnetic tape, referring to FIG. 5, the slip gear 250 receives the rotation of the motor 101 and the spring The reel rest 201 rotates due to the frictional torque on the surface of the felt 245 due to the elastic force of the reel 249. At this time, the magnetic tape 15
In order to wind up the 0 without loosening, slip gear 25
The rotation at 0 is faster than the reel rest 201. The felt 245 smoothly absorbs this rotational speed. On the other hand, the reel rest 201 includes a reel gear 260.
is press-fitted downward, and both rotate at the same time. Therefore, reel gear 260 and slip gear 250
The rotation speed is always different. Here, the 15th
As shown in Figure A, when the 7-way interrupter 290 is disposed below the reel gear 260, the light receiving element of the photo interrupter 290 emits weak light in the case of Figure 15A, and strong light in the case of Figure 15B8. It is sensitive to light, and in combination with the equally spaced holes provided in the reel gear 260, it becomes possible to extract continuous light intensity signals.

Now, when the magnetic tape 150 reaches the end, the slip gear 2
Although the reel rest 201 and the reel gear 250 are rotated by 504.1 rotations, the reel rest 201 and the reel gear 250 are in a stationary state.

At this time, the light receiving element of the photointerrupter 290 receives a single intensity of light depending on whether or not there is a hole in the reel gear 260 above it. By detecting the change from this continuous light intensity signal to a single intensity optical signal, it is possible to detect the tape in the magnetic tape playback state.

During fast forwarding of the magnetic tape, the gear FF 330 of the reel rest drive device 300 and the reel gear 260 are engaged (see FIG. 11), and the fact that continuous light intensity signals are obtained from the photo interrupter 290 is similar to when playing back the magnetic tape. The same is true.

In addition, in the case of magnetic tape 150tfi termination,
The reel rest 201 and the reel gear 260 are in a stationary state, and the pulley 310 slips and rotates on the felt 312 surface. At this time, the slip gear 250 does not perform any function and is in the same stationary state as the reel rest 201. Therefore, in this case as well, the photo interrupter 29
The light receiving element of 0 receives light of a single intensity, and as in the case of reproduction,
It becomes possible to detect the tape end state during fast forwarding of the magnetic tape 150.

In order to ensure the operation of these detection means, the photo interrupter 290111 is provided with a reel gear 260 that rotates at the same time as the reel rest 201, and a plurality of equally spaced holes are provided, and the emitted light of the photo interrupter 290 is made stronger. A white member is provided to reflect the light. Further, the slip gear 250 is made of a black material so as to absorb this emitted light well.

[Effects of the Invention] As described above, in the tape player of the present invention, the reel rest drive device is made into two stages, and the reel rest device is also made into two stages accordingly, so that the rotational force from the reel rest drive device to the reel rest device is reduced. The transmission path can be easily switched using a single cam plate. Therefore, switch! The number of components can be reduced, and the configuration can be made easy and compact. Furthermore, since the rotational force is transmitted using gears, reliable tape running is possible.

Furthermore, since a single cam plate is used to switch and control the transmission path, the control section can be centralized, making it possible to save space and become more compact.

[BRIEF DESCRIPTION OF THE DRAWINGS] Figure 1 shows the L of a tape player which is an embodiment of the present invention.
FIG. 3 is a plan view showing a state during reproduction. Figure 2 shows reel rest drive! FIG. 3 is a detailed sectional view showing the configuration of l1lliF. 3A and 3B are diagrams showing the structure of the idler base PL of the reel rest drive device. FIGS. 4A and 4B are diagrams showing the structure of the idler base FF of the reel rest drive device. FIG. 5 is a detailed sectional view showing the configuration of the reel rest device. FIG. 6 is a diagram showing a path for transmitting the rotation of the motor to the reel rest drive device and the capstan. FIG. 7 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at a constant speed. FIG. 8 is a partially enlarged view of FIG. 1. FIG. 9 is a plan view showing the state of the tape player during R playback. FIG. 10 is a partially enlarged view of FIG. 9. FIG. 11 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at high speed. FIG. 12 is a plan view showing the state of the tape player when running at L high speed. FIG. 13 is a partially enlarged view of FIG. 12. FIG. 14 is a partially enlarged view showing the state of the tape player when running at R high speed. Figure 15A to Figure 1
Figure 5C is a diagram showing Mr. S detecting the end of the tape, and the 15th
Figure A shows the case where the hole of the reel gear is located above the photo-interrupter, Figure 15B shows the case where the part without holes of the reel gear is located above the photo-interrupter, and Figure 15C shows the structure of the reel gear. FIG. FIG. 16 is a plan view showing the configuration of a conventional tape player. FIG. 17 is a plan view showing the main part of a conventional tape player when playing in the forward direction. FIG. 18 is a plan view showing the main part of a conventional tape player when rewinding in the reverse direction. FIG. 19 is a plan view showing the main parts of a conventional tape player during playback in the reverse direction. FIG. 20 is a plan view showing the main part of a conventional tape player in the S-shape during forward rewinding. FIG. 21 is a sectional view showing a rotational force transmission path when a tape runs at high speed in a conventional tape player. FIGS. 22 and 23 are diagrams for explaining the tape fast forward operation in a conventional tape player. FIG. 24 is a side view of a tape running direction detection switch portion in a conventional tape player. FIG. 25 is a diagram showing electrical connections of main parts in a conventional tape player. In the figure, 100 is the main base, 101 is the motor,
102 is a motor pulley, 170 is a main belt, 180
is the idler belt, 185a is the claw F, 185b is the claw R,
191, 192 are stopper adjustment claws, 200 is a reel rest device, 2o1° 201a, 201b are reel rests, 205 is a bin PL 1206 is a cam PL, 207 is a bin FF 1208 is a cam FF, 210 is a cam plate idler, 220 is an idler base PL, 221 is the shaft PL, 223 is the corner R, 224 is the corner F, 1230 is the idler base FF, 231 is the shaft FF, 234 is the stopper pin, 241 is the shaft reel, 245 is the felt, 250 is the slip gear, 260 is the reel gear, 3
00 is the reel rest drive device, 301 is the shaft idler, 310 is the pulley, 312 is the felt, 313 is the FF
Base, 320 is gear PL, 330 is gear FF, 340
is gear idler FF. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Masao Oiwa 300
, Reno jL2) 4fN key f 20
5: and'>PL, 206: TJ4PL201
a, 201b:'I-L2) 20
7: t'n FF, 208°D 4FF21Q
: 7JI47”L-) Fidra
220; Fiddler) 230: T-ite
7-Hetosu Cumulative 28] 312: Fenoreto 23α Complete Idofu N-S FF Beauty 38-Series 3B Day 220: Fiddler PL 221 Nift PL 224: Corner'''F2
O3, Pino PL 223: Corner-32
34: Strike II gun 20f: Pin FF certain 5fA 100: Main base 2o1: Reel lost 240: Izumi Tom J-le
241: Vzu7 Trillino L241: Vzu7 Trill 245 Felt 25
0゛Also゛J77°~”y 244: Sub °j/7°A-260゛ Reel〒r
249: Suarino 7″ reel No. 3 anti-1
4 Kusunoki 101: Mo? -220° Y Illama - λ Steam 1
02: +-7-7"-') 2
01a, 201b: ”)-ru L strike 180, fluid belt 205: Bishi PL185
a: 7i%F 3
20: *-Ryo-PL185b: i~R 210 force 47'L-tofi ru206 force 4PL 208°, 04FF system Zoro 101: Mo)'-102: Awn-yr-Lee system/θ same 101: motor 18
5a, 185b: 1m 11% I 8 102: Hemo 9-7
'-'+205: Hin PL
180: Complete Idrabe°IC 2
06: Cam PL20ta, 201b: 'Nord F Mata) 207: Kon FF210
: Sword 47'L-toEto"7-208:
l, FF220: Fi V=-W-S PL 223: Tsuko-R 320: %-t,-PL system/211 208° cam FF 201a, 201b: Reel L strike 330
- *”y-FF207 Ni Pin FF 208: Car FF 234: Stopper Pin 191: View Sono?-F (tlfl14
) 192: 21-horn? -R (Shocho[/IN)23
4: Sto-”X-Uノ, 330: 't-7
-FF191::Zto1/MarF 192: Strike+/lzu-R Suspension 75A6 Certain%iBKuM 75CI Kakuho 77 Easy Type 7g Box Procedure Amendment (Voluntary)

Claims (3)

[Claims] (1) A tape player that runs a tape-shaped recording medium, the tape player having a reel rest device having a reel rest shaft for winding up the tape-shaped recording medium, and transmitting rotational force to the reel rest device. a reel rest drive device, the reel rest drive device includes: a support shaft; a first gear rotatably provided around the support shaft; and a first gear that rotates while meshing with the first gear, a second gear for transmitting rotational force from the first gear to the reel rest device; a rotation shaft of the second gear and a first stopper pin;
and a first control plate rotatably provided on the support shaft; a third gear rotatably provided around the support shaft; and a third gear that meshes with and rotates with the third gear, and controls the rotation of the third gear. a fourth gear for transmitting force to the reel rest device; and a second stopper pin provided at a position opposite to the first stopper pin with respect to the rotation axis of the fourth gear and the support shaft, and a second rotatably provided on the support shaft.
The reel rest device is rotatably provided on the reel rest shaft, rotates in response to the rotational force from the second gear, and applies a first rotational force to the reel rest shaft. and a sixth gear that is rotatably provided on the reel rest shaft, rotates in response to the rotational force from the fourth gear, and applies a second rotational force to the reel rest shaft. The tape player further includes a first portion that is movable between predetermined first and second point positions and has a width that is the same as a diameter of the first stopper pin. a first cam groove consisting of a second portion having a width larger than the diameter of the first stopper pin; a first portion having the same width as the diameter of the second stopper pin; and a second portion having a width larger than the diameter of the second stopper pin; a second cam groove consisting of a second portion having a larger width, and the first stopper pin is located in the first portion of the first cam groove when moved to the first point position. , and the second stopper pin is located in a second portion of the second cam groove to enable meshing between the fourth gear and the sixth gear, and is moved to the second point position. In some cases, the first stopper pin is located in a second portion of the first cam groove, and the second stopper pin is located in the first portion of the second cam groove so that the second gear and the fifth A tape player equipped with a cam plate that allows meshing with gears. (2) The tape player according to claim 1, wherein a cam surface that transitions from the first portion to the second portion of the first cam groove has a shape that widens as it moves away from the support shaft. (3) The cam surface of the second cam groove that transitions from the first portion to the second portion has a shape that widens as it moves away from the support shaft. tape player.