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1. 发明专利

JPS57127941A TAPE STOP DETECTOR FOR RECIPROCATING TYPE TAPE RECORDER 失效
公开(公告)号：JPS57127941A
公开(公告)日：1982-08-09
申请号：JP1168481
申请日：1981-01-30
申请人： HITACHI LTD
发明人： ITOU CHITSU , USUI YOSHIO
IPC分类号： G11B15/44 , G11B15/093
摘要： PURPOSE:To achieve detection of tape stop accurately, by the constitution that revolution is always obtained from a turntable at a winding side through the movement of a switching member in which two pinch rollers can selectively be press-contacted on two capstans. CONSTITUTION:When tape end or winding stop takes place from a tape running state, a cam wheel 31b of the 2nd rotating body 31 succeedingly rotates, but since a friction rotating plate 24 stops, after a pin 28 enters a cam groove 24a and the plate 24 is located at a neutral location, the plate is butted to a projection 24b and no further movement caused. Thus, by a rest stroke of a rocking member 25 of the cam wheel 31b, the member is moved toward the arrow E against a spring 27 by taking a contact section between the pin 28 and the projection 24b of the cam groove as a fulcrum and a rocking fulcrum 25b of the member 25 is moved, allowing to move an operating member 33 toward the arrow E and to close a contact 59. Thus, the friction rotating plate 24 is brought into contact with winding side at forward/reverse any revolution to detect stopping accurately.

2. 发明专利

JPS5584066A MAGNETIC RECORDER*REPRODUCER 失效
公开(公告)号：JPS5584066A
公开(公告)日：1980-06-24
申请号：JP15638778
申请日：1978-12-20
申请人： HITACHI LTD
发明人： ITOU CHITSU
IPC分类号： G11B15/02 , G11B15/675
摘要： PURPOSE:To prevent the harmful automatic ejection of the cassette by giving ejection to the cassette at the time of the automatic pause and the conduction break by means of the pause/ejection button provided to the car recorder/reproducer. CONSTITUTION:With push of pause/ejection lever 193 in the quick winding and rewinding mode, both play lock plate 131 and quick winding lock plate 132 are shifted via projection 193a of lever 193. And thus the necessary lock is released to set the recorder/reproducer under the pause mode to avoid the harmful automatic ejection of the cassette. Thus no tape sag is caused due to the vibration, thus ensuring the good reproduction with operation of reproduction lever 99. When lever 193 is pushed furthermore in the pause mode, gear arm 14 turns via slider 204 to secure engagement between gear 16 and pinion 10. Thus the cassette is ejected through motor driving. And when lever 193 is pressed with a larger stroke than that at the time of motor-driven ejection, the necessary cassette ejection is secured via the mechanical means.

3. 发明专利

JPS5517893A CASSETTE TAPE RECORDER 失效
公开(公告)号：JPS5517893A
公开(公告)日：1980-02-07
申请号：JP15639378
申请日：1978-12-20
申请人： HITACHI LTD
发明人： USUI YOSHIO , ITOU CHITSU , TACHIBANA YOSHIAKI
IPC分类号： G11B15/675
摘要： PURPOSE:To prevent the malfunction dependent upon gears lacking tooth dependent upon vibration, etc., in the conventional device by transferring the rotation of a motor to a rotary cam body through a sliding material on a basis of a external ejection command and disconnecting the connection to the rotary cam body to stop if after a cassette is ejected by the rotation of the rotary cam body. CONSTITUTION:When an ejecting button is depressed, solenoid 29 sucks plunger 30 to rotate gear cam 14 in the left direction against spring 20 and is stopped by stopping arm 23. Consequently, idle gear 18 is geared with rotating pinion gear 12 to decelerate and rotate cam gear 33. By the rotation of this cam gear 33, the cassette holder is caused to ascend from a play position to an eject position by the inclined cam, and after that, the cassette is ejected. After cassette ejection, since kick part 97 of cam gear 33 kicks arm 98 of stopping arm 23 to release the lock state, gear arm 14 where idle gear 18 is put is rotated in the right direction by spring 20 to release the gearing between pinion gear 12 and idle gear 18, thereby stopping the rotation of cam gear 33. A switch is turned off by protrusion 75 to stop the motor simultaneously approximately.

4. 发明专利

JPS6018834A TAPE DRIVE SWITCH OF TAPE RECORDER 失效
公开(公告)号：JPS6018834A
公开(公告)日：1985-01-30
申请号：JP12606383
申请日：1983-07-13
申请人： HITACHI LTD
发明人： ITOU CHITSU
IPC分类号： G11B15/02 , G11B15/10 , G11B15/17 , G11B15/675
摘要： PURPOSE:To switch assuredly the tape drive without increasing the ejection force of a cassette by making use of a tape drive motor and at the same time switching the reverse reproduction state to the forward reproduction state when the cassette is loaded. CONSTITUTION:When a cassette half A is slightly inserted toward an arrow P, the 1st switch 110 is turned on to revolve a motor 2. Then a PA arm 103 is turned counterclockwise. A loading gear 48 is revolved and engages a gear part 47' of a pulley gear 47, and therefore a projection 51 turns the arm 103. Then a cassette lever 78 is shifted in the same direction by a spring 83 and in response to the shift of a loading lever 71. Thus a cassette A is automatically pulled inside. When the gear 48 is revolved and set at a reproduction mode, a reproduction control lever 125 can be pressed. Thus a reproduction mode sets in. At the beginning of actuation, a slope cam part of a switching slider 31 is pressed through a pressure part 64 of a power slider 57. Thus the reverse reproduction state is switched to a forward reproduction state.

5. 发明专利

JPS5817567A CASSETTE LOADING AND UNLOADING DEVICE OF MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPS5817567A
公开(公告)日：1983-02-01
申请号：JP11503781
申请日：1981-07-24
申请人： HITACHI LTD
发明人： ITOU CHITSU , KOBAYASHI SATORU , USUI YOSHIO
IPC分类号： G11B15/675
摘要： PURPOSE:To prevent an impact due to a jump out of a cassette by detecting the insertion of the cassette, and moving the cassette to a cassette reproduction position in the former half of the rotation of a cam which rotates on and elevating the cassette so that the cassette is not ejected and then ejecting it softly in the latter half. CONSTITUTION:When a cassette 5 is pressed in until L1, a cassette moving plate 6, a rotary arm 9, and a coupling arm 11 couples together and a cassette moving arm 12 also rotates to detect the cassette by 14. A cam rotating body 13 also has a half turn to allow a pin 13a to press a cam surface 12c, and the cassette 5 is drawn automatically to a position L2 to reach a reproduction position. For cassette ejection, pressing a lever which is not shown in the figure rotates the cam rotating body from the half-turn state to its original position. In this case, the cassette 5 is elevated without being ejected and at the same time, a pin 13b pressed the cam surface 12c of the moving arm 12 continuously. Eventually, the pin 13b comes out from the cam surface 12c and the moving arm 12 rotates clockwise through a spring 10 to suppress the ejection speed of the cassette, which is prevented from jumping out.

6. 发明专利

JPS57176552A CASSETTE TAPE RECORDER 失效
公开(公告)号：JPS57176552A
公开(公告)日：1982-10-29
申请号：JP6116281
申请日：1981-04-24
申请人： HITACHI LTD
发明人： USUI YOSHIO , ITOU CHITSU , UENO HIDETO
IPC分类号： G11B15/02 , G11B15/093
摘要： PURPOSE:To make the device thin and light, by giving a tape end detecting signal via a mode changeover switch to an electromagnet means storing fast feed, rewinding and reproducing state and to a power assisting means making reproduction or direction changeover. CONSTITUTION:When a power supply switch (S)3 is turned on, a motor 2 is driven and a capacitor C12 starts charging because a power assisting start S1 is turned on, and a power assisting operation solenoid SC is absorbed only for charging time. Simultaneously, since the electromagnet EM continues absorption, the repreduction state is kept. Next, when a manual program S2 turns on, the solenoid SC is absorbed for direction change. Hall elements H1 and H2 are connected to an IC113 via switch S4 and normally, on-state is outputted, but when the rotation stops at the tape end, on/off pulses are outputted. When a mode switch S5 is at fast feed and rewinding, the locking is released via the electromagnet EM, and the direction is changed via the solenoid SC when PLAY state is made.

7. 发明专利

JPS5584063A PINCH ROLLER PRESSURE BONDING DEVICE FOR TAPE RECORDER 失效
公开(公告)号：JPS5584063A
公开(公告)日：1980-06-24
申请号：JP6041579
申请日：1979-05-18
申请人： HITACHI LTD
发明人： USUI YOSHIO , ITOU CHITSU
IPC分类号： G11B15/44
摘要： PURPOSE:To ensure the assured pressure for the pinch roller with a small-size structure by giving the control to the pressure and release to the pinch roller capstans corresponding to the forward and backward turn capstans each via a set of torsion springs. CONSTITUTION:With operation of play bar 99, the play arm turns in coupling. And head pan 107 is shifted left. And pinch roller 58 is pressed to forward turn capstan 63 via torsion spring 118 containing the free-turning symmetrical arms centering on support axle 117 of pan 107, thus the tape run in the forward direction. When the magnet is excited in response to the tape end detection signals, cam 175 turns to shift change-over slider 16 toward arrow B. And thus pinch roller 58' is pressed to backward turn capstan 63' via the symmetrical arms of spring 118 and by pan 107 coupling to slider 167. At the same time, roller 58 detaches from capstan 63. Thus the assured pressure and release is ensured for the pinch roller to the two sets of capstans through a small-size constitution using a set of torsion springs and without using two sets of spring and its relating mechanism.

8. 发明专利

JPS60157754A POWER ASSIST REPRODUCER OF CASSETE TAPE RECORDER 失效
公开(公告)号：JPS60157754A
公开(公告)日：1985-08-19
申请号：JP15755184
申请日：1984-07-30
申请人： HITACHI LTD
发明人： USUI KATSUO , ITOU CHITSU , UENO HIDETO
IPC分类号： G11B15/10 , G11B15/17 , G11B15/675
摘要： PURPOSE:To simplify the structure of a power assist reproducer and to reduce its cost by turning on and off a power assist start switch with a direction switching control plate member in an action mode of a rapid traverse operation lever, rewind operation lever and a head plate, and actuating a power assist head with a power assist working solenoid. CONSTITUTION:In a fast forward mode a direction switching control plate 49 is also slided with the pressure of a folded part 19a for lock of a rapid traverse operation lever 19. Therefore a direction switching selection slider 63 is positioned so that it can switch directions. When the direction is switched in a rapid traverse mode, a power assist working solenoid 45 is adsorbed and a cam gear 35 is revolved. Thus a power assist working plate 38 is slided. In this case, a head 22 is set in a STOP mode. Therefore the plate 22 is advanced by the plate 38 and at the same time the direction is switched. In this case, a lock van 50 is shifted left by a lock pin 53 when the plate 22 is advanced. Thus a PLAY mode is set after a rapid traverse mode is released. So is with a rewind mode.

9. 发明专利

JPS59191162A Cassette tape recorder 失效
标题翻译： CASSETTE磁带录音机
公开(公告)号：JPS59191162A
公开(公告)日：1984-10-30
申请号：JP6358083
申请日：1983-04-13
申请人： Hitachi Ltd
发明人： ITOU CHITSU
IPC分类号： G11B15/10 , G11B15/17 , G11B15/675
CPC分类号： G11B15/10 , G11B15/67505
摘要： PURPOSE:To eliminate the need for a cassette detection switch, solenoid, and its driving circuit by starting the rotation of a cam gear for reproduction, i.e. initiating reproducing operation mechanically by the rotation of a loading gear for a cassette device. CONSTITUTION:When a cassette A is inserted slightly as shown by an arrow P, the front end of the cassette A presses the bent part 101 of a cassette piece 99. Consequently, a cassette arm 83 turns clockwise. A cassette lever 78 and a loading lever 71 move by said turning at the same time in the direction opposite to an arrow H. Consequently, the 1st switch 110 turns on to drive a motor 2. The loading gear 48, on the other hand, is energized clockwise to engage the gear part 47' of a pulley gear 47. Thus, the loading gear receives rotating force to rotate. Then the cassette A is automatically drawn in by the pawl part 100 of the cassette piece 99. Then, a lock slider 142 is moved down to unlock a cam gear 145 for reproduction which is energized to turn counterclockwise, so it engages the gear part 6' of a flywheel.
摘要翻译：目的：为了通过启动用于再现的凸轮齿轮的旋转来消除对盒式磁带检测开关，螺线管及其驱动电路的需要，即通过用于盒装置的装载齿轮的旋转而机械地起动再现操作。构成：当盒A如箭头P所示稍微插入时，盒A的前端按压盒体99的弯曲部分101.因此，盒臂83顺时针旋转。盒式杠杆78和装载杆71同时沿着与箭头H相反的方向移动。因此，第一开关110接通以驱动电动机2.另一方面，装载齿轮48，被顺时针通电以接合皮带轮齿轮47的齿轮部分47'。因此，加载齿轮接受旋转力旋转。然后，盒A被卡片99的棘爪部分100自动地拉入。然后，锁定滑块142向下移动以解锁用于再生的凸轮齿轮145，该凸轮齿轮145被通电以逆时针转动，从而与齿轮部6接合 “飞轮”

10. 发明专利

JPS57176556A AUTOMATIC REVERSING TYPE CASSETTE TAPE RECORDER 失效
公开(公告)号：JPS57176556A
公开(公告)日：1982-10-29
申请号：JP6116181
申请日：1981-04-24
申请人： HITACHI LTD
发明人： USUI YOSHIO , ITOU CHITSU , UENO HIDETO
IPC分类号： G11B15/10 , G11B15/44
摘要： PURPOSE:To make convenient use, by controlling a direction changeover selecting means so that the direction changeover can be made with a power assisting mechanism even with the play state and the fast feed and rewinding state, by means of a head plate, a fast feed operating lever and a rewinding operation lever respectively. CONSTITUTION:A cam 36 forwarding a head plate into the play state is provided incorporatedly for a power assisting cam gear 35 where a part of the outer circumference gear is missing, and a power assisting operation plate 38 implanted with a roller pin 37 coupled with the cam 36 is guided for one side with a guide hole 1e of a chassis 1 with a guide pin 39 implanted at one end, and one side surface of another end is contacted with a rotary shaft 40 of the gear 35 and slid and guided, and the plate 38 is slid toward the same direction as the sliding direction of the head plate 22 with a long circular hole 38a having larger diameter than that of a rotary shaft 40 by taking the guide pin 30 as a center.

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