JPH0138757Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a tape recorder for an answering machine that is connected to a telephone and records information such as the conversation of the other party when a call comes in while the user is away. Regarding the mechanism.

The present applicant has developed a transmitting and receiving head board whose movement is controlled alternately by reciprocating the assist lever using an assist cam whose rotation is controlled by the swinging of the locking/disengaging member. A separate telephone tape recorder was proposed to improve the drawbacks of the conventional tape recorder, which had two independent functions, being built into one machine frame, resulting in a complex structure, large number of parts, high cost, and large size. It was done.

However, in that proposal, the transmission and reception operations were configured cyclically, so that even if only the reception record was to be reproduced, the reception could not be reproduced until after the transmission operation had been performed.

An object of the present invention is to propose a drive and stationary mechanism for a transmitting head board of a tape recorder for an answering machine, which has a simple structure and shortens the transmission operation during reception and reproduction.

A feature of the present invention is that a blocking member driven by the long-time operation of the solenoid is provided to prevent the transmission head board from moving, thereby shortening the transmission mode operation.

The present invention will be explained below with reference to illustrated embodiments. 1st
In the figure, the driving/stationary mechanism for the tape recorder for an answering machine and the transmitting head board includes a transmitting head board 2 on the right side of a chassis 1, a receiving head board 3 on the left side, and a transmitting capstan shaft 11 and a receiving capstan shaft 11. The shaft 12 is configured to be rotated by one motor 13, the tape for transmission is placed in a cassette 14 in an endless format, the tape for reception is placed in a cassette 15 in an end format, and the tape in the cassette 15 is transferred to a reel stand. 16, 17 winding shaft 18
It is configured to be wound up and rewound by an unwinding shaft 19. The transmission head board 2 and the reception head board 3 are alternately controlled to move by an assist lever 5 which is reciprocated by an assist cam of an assist cam gear 4 provided on the lower side of the chassis 1, as shown in FIG. The assist cam gear 4 is rotationally controlled by an engagement/disengagement member 6 and a trigger solenoid 7, and is actuated by the engagement/disengagement member to move the transmitting head board 2 to the operating position only when reproducing a reception record. It is configured to be blocked by a blocking member 8.

The transmitting head board 2 and the receiving head board 3
are both formed in an inverted L-shape as shown in FIG.
It is held so that it can move freely back and forth. At least a playback head 20 is mounted on the transmitting head board 2, and an erasing head 21 and a recording/playback head 22 are mounted on the receiving head board 3.
3 and 24 are supported by support shafts 25 and 26 on U-shaped pinch arms 9 and 9, respectively, and the pinch arms 9 and 9 are supported on support shafts 27 and 28 on the head boards 2 and 3 as shown in FIGS. The support shafts 27, 2 are rotatably supported on the shafts 27, 2.
One end of the springs 29, 30 wound around the head boards 2, 3 is engaged with the upwardly bent pieces 2a, 3a of the head boards 2, 3, and the other end is engaged with the downwardly bent pieces 9a, 9a of the pinch arms 9, 9. . The tips of the bent pieces 9a, 9a are inserted into long holes 2b, 3b bored in the head substrates 2, 3. The bent pieces 2 are attached to the head boards 2 and 3.
Notches 2c and 3c are formed adjacent to a and 3a. Furthermore, a protrusion 2d and a notch 2e are provided on the upper left side of the transmitting head board 2 in FIG.
A through hole 1b is bored in the chassis 1 at this position.

As shown in FIG. 2, the assist cam gear 4 is rotatably supported on the underside of the chassis 1 by a shaft 31 supported by another chassis 10, and has tooth profiles 4a formed on its outer periphery and teeth at two locations. First and second toothless parts 4
b, 4c are formed. Furthermore, the first missing tooth portion 4b
A first convex portion 4d is provided on the inner side near one side, and second and third convex portions 4e, 4 are provided on both sides near the inner side of the second missing tooth portion 4c.
A first assist cam 4g and a second assist cam 4h are formed around the center of the assist cam gear 4 to protrude toward the chassis 1 with a gap 4i in between. A pin 32 is fixed to the assist cam gear 4 on the outside of the first assist cam 4g.
A spring 33, one end of which is fixed to the chassis 1, is in contact with the spring 2.

The tooth profile 4a of the assist cam gear 4 corresponds to a pinion 34 provided on the receiving capstan shaft 12.
The assist cam gear 4 is configured to be rotated clockwise in FIG. 2 by meshing with the assist cam gear 4.

The assist lever 5 is deformed T as shown in FIG.
The first and second assist cams 4g are formed in a letter shape and are rotatably supported on the underside of the chassis 1 by a shaft 35 facing upside down, and an engagement pin 36 is fixed to the tip of the center arm 5a. 4h, horizontal arm 5
B, 5c are provided with bent portions 5d, 5e at both ends, and as shown in FIGS. 1 and 3, the long holes 1 of the chassis 1 are
Pinch roller 2 protrudes upward from c, 1c.
3 and 24 in the direction of the capstan shafts 11 and 12 so as to come into contact with the springs 29 and 30, respectively.

The engaging/disengaging member 6 is rotatably supported by a shaft 37 on the chassis 1 at a position facing the capstan shaft 12 across the shaft 31 of the assist cam gear 4;
The engaging portion 6a of the engaging/disengaging member 6 faces so as to be engaged with the first to third convex portions 4d, 4e, and 4f in sequence, and the plunger 7a of the trigger solenoid 7 is connected to the arm portion 6b. , with the shaft 37 in between
The blocking member 8 is integrally extended from the engaging/disengaging member on the lower side in the figure, and a bending preventing portion 8a is provided at the lower end,
The transmitting head board 2 is inserted through the through hole 1b of the chassis.
The blocking member 8 is disposed so as to face the protruding portion 2d, and the blocking member 8 is provided with a pin 8b on which one end of a spring 38 wound around the shaft 37 is latched, so that the blocking member 8 is rotated counterclockwise in FIG. It is urged to rotate in the direction.

A message for an answering machine is recorded on a transmission tape housed in the cassette 14.

The driving and stopping mechanism of the transmitting head board of the answering machine tape recorder is constructed as described above, and the initial stopping position of the assist cam gear 4 is such that the third convex portion 4f engages with the engaging/disengaging member 6 as shown in FIG. At this point, the engagement pin 36 of the center arm 5a of the assist lever 5 faces the inner arcuate surface A of the first assist cam 4g, and the assist cam gear The first toothless portion 4b of No. 4 faces the pinion 34 position of the capstan shaft 12.

When a call is received in the above state and the bell rings, the signal is detected by a detection device (not shown), and a short pulse current is applied to the trigger solenoid 7, causing the locking/disengaging member 6 to rotate clockwise in FIG. When the engaging portion 6a is disengaged from the third convex portion 4f, the assist cam gear 4 is rotated clockwise by the spring 33 pushing the pin 32, and this rotation causes the pinion 34 to be rotated clockwise.
The teeth 4a are engaged with the assist cam gear 4, and the assist cam gear 4 is rotated clockwise by the motor 13 for the first time.
During this first rotation, when the first convex portion 4d comes into contact with the engaging portion 6a of the engaging/disengaging member 6, it is stopped and becomes the state shown in FIG.
4 position, the engagement pin 36 of the center arm 5a of the assist lever 5 is moved through the gap 4i between the first and second assist cams by the inner arcuate surface A of the first assist cam 4g, The inner straight plane B of 4g is reached.

The assist lever 5 is rotated counterclockwise by the movement of the engagement pin 36, and the bent portion 5 of the horizontal arm portion 5b is rotated.
Step d presses the spring 29 to advance the sending head board 2 against a spring (not shown), presses the tape against the sending capstan shaft 11 with the pinch roller 23, and brings the playback head 20 into sliding contact with the tape. The message recorded on tape is transmitted to the other party.

When the transmitting head board 2 is in the forward state, a spring (not shown) exerts a return force on the board 2 to its original position, and this force causes the engagement pin 36 to press the inner linear surface B of the first assist cam 4g, so that the first convex portion 4d is pressed against the engaging portion 6a of the engaging/disengaging member 6.

The bent portion 8a of the blocking member 8 is once rotated clockwise when the short pulse current is applied to the solenoid 7, but before the transmitting head board 2 is moved forward by the assist lever 5, the bending portion 8a is turned clockwise. The transmitting head board 2 is returned to the position shown in FIG. 2 by the spring 38, and the forward movement of the transmitting head board 2 is not prevented.

When a short pulse current is applied to the solenoid 7 based on a signal recorded on the tape around the end of the message, the engaging portion 6a of the engaging/disengaging member 6 moves into the first convex portion 4.
d and the bent portion 8a of the blocking member 8.
is rotated and inserted into the notch 2e on the front side in FIG. Therefore, a clockwise rotational force is applied to the assist lever 5, and the engagement pin 3
6 pushes the inner linear surface B of the first assist cam 4g, so the assist cam gear 4 is rotated clockwise. With this rotation, the tooth profile 4a is engaged with the pinion 34, and the assist cam gear 4 is rotated for a second time by the motor 13 until the second convex portion 4e comes into contact with the engaging portion 6a of the engaging/disengaging member 6, as shown in FIG. At this time, the first toothless portion 4b is at the pinion 34 position, the pin 32 is pressed clockwise by the spring 33, and the engagement pin 36 of the assist lever 5 moves around the outer periphery of the second assist cam 4h. When the assist lever 5 is rotated to the position shown in FIG. 5, the assist lever 5 is rotated clockwise, so that the bent portion 5e of the horizontal arm portion 5c comes into contact with the spring 30 of the pinch arm 9 on the receiving side, and the receiving head board 3
is moved forward against a spring (not shown), and the tape is transferred to the reception capstan shaft 12 using the pinch roller 24.
At the same time, the erasing head 21 and the recording/reproducing head 22 are brought into sliding contact with the tape to record information such as the conversation of the other party.

The recording on the tape is completed when the other party hangs up the receiver and a short pulse current is applied to the trigger solenoid 7 in response to this signal, causing the engaging portion 6a of the engaging/disengaging member 6 to move to the second convex portion. 4c, the assist cam gear 4 is rotated clockwise by the spring 33, and when the rear third convex portion 4f comes into contact with the engaging portion 6a, the rotation is stopped and returned to the original state shown in FIG. Will be reinstated.

When the user of the answering machine tape recorder wants to listen to incoming calls while the user is away, a short pulse current is applied to the trigger solenoid 7, and after the transmitting head board 2 has been operated, the receiving terminal is activated. The head board 3 moves forward and the recording/playback head 22 of the receiving head board 3 is brought into sliding contact with the tape, but this operation involves waiting time for the playing time of the transmitting tape, so at this time the receiving/reproducing head 22 (not shown) is in contact with the tape. When a long pulse current is applied to the solenoid using the operating button, the blocking member 8 is rotated clockwise, and the bent portion 8a is placed in the forward path of the protruding portion 2d of the transmitting head board 2, as shown in FIG. This protrudes and prevents the transmitting head board 2 from moving forward. That is, the long pulse current application time refers to the time until the protrusion 2d hits the bent portion 8a, and this time is controlled by a microcomputer, a capacitor, or the like. In this state, the first convex portion 4d passes the outside of the engaging portion 6a of the engaging/disengaging member 6 without engagement, so the assist lever 5 is reciprocated and the state shown in FIG. 4 is passed without engagement. In the state shown in Figure 5, the contents of the telephone calls received while the user was away can be played back and listened to without waiting time.

The protrusion 2d and cutout 2e of the transmitting head board 2 in the above description are provided at other positions, for example, at a position close to the pinch roller 23, and the blocking member 8 is installed at that position.
The bent portion 8a may be extended.

To summarize the above operation, when the trigger solenoid 7 is energized with the first short pass current, the tape recorder on the transmitting side is activated, and when the trigger solenoid 7 is energized with the second short pulse current, the tape recorder on the receiving side is activated. It enters a reception recording state, and returns to its original stopped state by applying a short pulse current for the third time. When the next long pulse current is energized to the solenoid 7, the transmission operation is shortened and the solenoid 7 enters the receiving and reproducing state, and when the next short pulse current is energized, it returns to the original stop state.

Since the present invention is constructed as described above, it is possible to control the movement of the transmitting head board and the receiving head board by alternately swinging one assist lever back and forth with the assist cam, and also has a long trigger solenoid. The transmitting operation is blocked by a blocking member at the length where the path current is applied, and this shortening operation can be controlled by a single solenoid and blocking member that controls the movement of the transmitting and receiving head boards, and is small. It is an object of the present invention to provide a drive and stationary mechanism for a transmitting head board of a tape recorder for an answering machine, which has excellent practical effects such as being able to save power because it only requires a solenoid, and having a simple and compact structure. can.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a plan view showing the drive and stationary mechanism of the transmitting head board of a tape recorder for an answering machine, and Fig. 2 is a plan view showing the assist cam gear and assist lever as seen through the chassis. Fig. 3 is a perspective view showing the main parts of the pinch arm, head board, and assist lever, Fig. 4 is an explanatory diagram of the operation of the assist cam gear and assist lever in the transmitting state, and Fig. 5 is the same in the receiving state. FIG. 6 is an explanatory diagram of the operation in which the forward movement of the transmitting head board is blocked by the blocking member. 2... Transmission head board, 3... Receiving head board, 4... Assist cam gear, 4g, 4h...
Assist cam, 5... Assist lever, 6... Engaging/disengaging member, 8... Blocking member.

Claims (1)

[Scope of utility model registration request] An engaging/disengaging member driven by a solenoid, an assist cam whose rotation is controlled by the rocking of this engaging/disengaging member, an assist lever which is reciprocated by this assist cam, and a feed whose movement is controlled alternately by this assist lever. A head board for transmission and reception, and a blocking member driven by the solenoid that prevents movement of the head board for transmission to an operating position, and the blocking member is driven by long-term operation of the solenoid. 1. A driving and stationary mechanism for a transmitting head board of a tape recorder for an answering machine, characterized in that the transmitting head board is prevented from moving.