JPS60129960A - Tape driver - Google Patents

Abstract

PURPOSE:To ensure the stable tape driving in a recording reproducing mode by moving up and down a gear having a capstan shaft for take-up of a tape in respect to an operation mode and transmitting the drive of said gear to a tape- up reel shaft via a fixed or mobile gear in accordance with the revolving direction of the gear. CONSTITUTION:A capstan shaft 122 which drives a tape contains a cylindrical gear 124 with a small diameter. This gear 124 is revolved together with the shaft 122 and also can move up and down along the shaft 122. Then the gear 124 is always deflected upward via a spring 1241 set between the gear 124 and a gear 123 of a large diameter. Furthermore the gear 124 contains a lever 125 set freely turnably at the gear 124. This lever 125 has a doglegged shape with a revolving center axis defined as an apex. Gears 127 and 128 engage the gear 124 and also engage reel shaft driving gears 120 and 121 in response to the angle of the lever 125 which moves in accordance with the revolving direction of the shaft 122.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] - The present invention relates to a tape drive device used in an answering machine, etc., and more particularly to a tape drive device that stabilizes tape running.

[Prior art]

Recently, there has been a trend to streamline offices and reduce manpower.
For this reason, especially in small offices, it may not be possible to respond appropriately to calls received while the user is away.

Therefore, if you automatically answer the phone call while you are away, play a pre-prepared message for the other party to hear, and record the necessary message from the other party, you can make progress. It is possible to set various modes such as recording, playback, fast forwarding and rewinding of the tape by sending in the tape, and it is also possible to arbitrarily select and retrieve the contents of phone calls made while you are away from home. There is.

Therefore, such answering machines have a first function of playing back and sending a pre-recorded message in response to an incoming call, and a function of recording the caller's message or setting various modes such as recording and playback by external operation. A second function is provided independently so that the contents of a phone call can be retrieved while the user is away, and a cassette chamber and a tape drive unit are provided for setting cassette tapes for each of the first and second functions. has been established.

By the way, in such a device, in order to simplify the configuration of the two tape drive units as much as possible, a gear having a capstan shaft is rotated by a motor at a predetermined speed, and the rotation is caused to wind the tape according to the direction of rotation. The signal is transmitted to the drive gear of the reel shaft on the take-out side or the reel stand on the tape feed-out side.

However, if the reel drive gear is directly rotated by a gear with a capstan shaft like this, the relationship between the rotation of the capstan shaft and the rotation of the reel shaft is determined, so it is particularly difficult to use in recording mode or playback mode. When the tape is wound on the take-up reel shaft while being driven by the capstan shaft, as the tape winding diameter on the take-up reel shaft changes, the amount of winding on the reel shaft and the capstan shaft change. The amount of tape feed at the two ends of the tape does not match, and as a result, unnecessary tension is applied to the tape, which may cause it to break or cause unnecessary slack in the tape.

[Purpose of the invention]

The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a tape drive device capable of stabilizing tape running during recording and playback modes.

[Summary of the invention]

The driving gear part of the tape winding reel shaft is composed of a fixed gear fixed to the reel shaft, a movable gear rotatably provided on the reel shaft, and a slip material interposed between these gears. The rotation of the gear having a shaft is driven by means having a gear which is provided to be movable up and down along the capstan shaft according to an operation mode and which transmits rotation according to the rotational direction of the gear having the capstan shaft. The information is transmitted to the tape winding reel shaft via a fixed or movable gear of the gear unit.

[Embodiments of the invention].

An embodiment of the present invention will be described below with reference to the drawings. - In FIG. 1, 11 indicates a first tape drive section provided for the ml function of the above-mentioned answering machine, and 12 indicates a second tape drive section provided for the second function of the telephone answering machine. ing.

Here, for the sake of explanation, starting from the second tape drive section 12,
Reference numerals 120 and 121 denote a pair of reel shaft drive gear sections that are provided opposite each other, of which gear section 120 is used for tape winding and gear section 121 is used for tape feeding. Here, the reel shaft section for tape winding and the driving gear section 120 are fixed gears 1201 and 1201 fixed to the reel shaft 13, as shown in FIG. A movable gear 12O2 is rotatably provided on the IJ-le shaft 13, and a slip material 1203 such as felt material is interposed between these gears 1201 and 1202, and the fixed gear 1201 is rotated by the rotary gear 1201. When the reel shaft 13 is directly rotated, the movable gear 1
When the reel 202 is rotated, the reel shaft 13 is driven through the slip material 12O3. Reference numeral 122 denotes a capstan shaft for driving tape running, and this capstan shaft 122 is installed at the center of a large-diameter gear 123 that also serves as a flywheel. In addition, this capstan shaft 12
A cylindrical gear 124 with a small diameter of 21 is provided. in this case,
The gear 124 rotates oppositely to the capstan shaft 122 and can simultaneously move up and down along the capstan shaft 122, and as shown in FIG.
A spring 1241 is interposed between them so that they are always biased upward. In addition, this gear 124 has a small diameter portion 124a at the head.
A lever 125 is rotatably provided on this small diameter portion 124a. In this case, as shown in FIG. 2, the lever 125 constitutes a so-called flexure eye mechanism in the small diameter portion 124a of the gear 124, and is configured to follow the rotational direction of the small diameter gear 124 and rotate by a predetermined angle. Further, the lever 125 has a dogleg shape with the center of rotation as the apex, and gears 127° and 128 are rotatably provided at both ends, respectively.

These gears 127 and 128 are meshed with the small diameter gear 124 and act as the reel shaft driving gear in response to rotation of a lever 125 that follows the rotational direction of the capstan shaft 122.

It is designed to mesh with 120.121. In FIG. 2, the gear 127 is the fixed gear 1 of the reel shaft drive gear part 120.
201 shows a state in which the two teeth are in mesh. 13
Reference numeral 1 denotes a pinch roller. This pinch roller 131 is provided at one end of a lever 132 rotatably supported by a chassis (not shown), and is stabilized in the shown position by bent springs 133 and 134. In this case spring 13
3 has one end secured to a lever 132I and the other end secured to a pin 133a of the chassis (not shown).

On the other hand, in the first tape drive 11, 110 and 111 are reel shaft drive gears, 112 is a capstan shaft, and 113 is a reel shaft drive gear.
114 is a large-diameter gear, 114 is a small-diameter gear 115 lever, 116 is a friction material, 117 and 118 are gears, 141 is a pinch roller, 142 is a lever, and 143 is a spring, which are connected to the second tape drive section 12 described above. It is configured in exactly the same way. In this case, the large-diameter gear 113 is meshed with an auxiliary gear 119 for reversing the rotation of the gear 113.

15 denotes these first and second tape drive units 11°12
A small-diameter gear 16 is provided on the rotating shaft 151 of this motor 15, and a lever 17
is rotatably provided. In this case, the lever 17 has a hole 17a into which the rotating shaft 151 is loosely fitted, as shown in FIG. A so-called friction mechanism is constructed to generate an appropriate frictional force, and is configured to rotate by a predetermined angle in accordance with the direction of rotation M151.

A gear 18 is rotatably provided on the lever 17. This gear 18 is meshed with the small diameter gear 16, and the rotation of the lever 17 causes the gear 18 to engage with the large diameter gear 123 of the second tape drive section 12 or the auxiliary gear 119 of the first tape drive section 11. The teeth are selectively aligned. In the drawing, the gear 18 is shown meshing with the large-diameter gear 123.

A lock portion 19 is provided opposite the lever 17 to lock the rotation of the lever 17. This lock part '19 is not shown in the figure, but includes a slide plate 193 that is slidably supported via pins 191 and 192 on a chassis (not shown), a claw part 194 that is provided on this slide plate 193 and locks the lever 17, and a slide plate 193 that locks the lever 17. It has a plunger 195 that drives the slide, and when the plunger 195 is off, the lever 17 is locked by the upper claw part 194, and when the plunger 195 is on, the lever 17 is locked by the sliding action of the slide plate 193 by the claw part 194. I'm trying to cancel it. In this case, the plunger 195 is turned on by a control circuit (not shown) only in the recording or playback mode. In addition, in the drawing, the lever 1 is
7 is rotated clockwise and locked. This lock portion 19 has a pin 19 on a slide plate 193 that abuts on the pinch roller levers 142 and 132 of the first and second tape drive portions 11 and 12 described above.
6.197. These pins 196 and 197 are used to increase and decrease the biasing force of the springs 133 and 143. By sliding the slide plate 193 downward in the drawing, the spring 13
The levers 132 and 143 are rotated clockwise by increasing the biasing force of 3.134, and the pinch rollers 141 and 131 are brought into contact with the capstan shafts 112 and 122, respectively.

Reference numeral 20 denotes a lever, and as shown in FIG. 2, this lever 20 is rotatably supported at its intermediate portion by a pin 21, and its tip abuts against the upper surface of the small diameter gear 124 via a spring 22. . The base end of this lever 20 is connected to the plunger 195, and when the franchisor 195 is turned on, that is, in recording or playback mode, the lever 20 is rotated counterclockwise about the pin 21 to move the small diameter gear 124 to the capstan shaft. 1
22, the push-down gear 127 can be engaged with the movable gear 1202 of the reel stand driving gear section 120.

In this case, although omitted in the drawing, the first tape drive unit 1
A lever similar to the lever 20 described above is also disposed on the small diameter gear 114 of the capstan shaft 112 of No. 1, and a plunger 195 moves the small diameter gear 114 to the capstan shaft 112.
It is also possible to move up and down along the

Next, its effect will be described.

It is now assumed that each of the first and second tape drive units 11 and 12 has a cassette tape set in a cassette chamber (not shown).

In this state, you can record the other party's business, or use external operations to set various modes such as recording, playback, tape rewind, and fast forward, so that you can retrieve the contents of the phone call while you are away from home. The functions will be mainly described.

When recording the other party's business, the plunger 195 is turned on by a control circuit (not shown), and the slide plate 193 is turned on.
Slide the lever 17 one time to release the lock of the lever 17 by the claw part 194. When the plunger 195 is turned on, the lever 20 rotates counterclockwise about the pin 21 in FIG.
, the gear 127 can mesh with the movable gear 1202 side of the reel shaft drive gear section 120.

When the motor 15 is rotated clockwise in this state, the lever 17 is rotated clockwise by the friction mechanism, and the gear 1 is rotated clockwise.
8 is meshed with the large diameter gear 123. This allows motor 1
The rotation of the rotating shaft 151 of No. 5 is transmitted to the large diameter gear 123 via the small diameter gear 16 and the gear 18, and the gear 123 rotates together with the capstan shaft 122 in the direction of the arrow shown in the figure. Then, the lever 125 is rotated clockwise by the flexible run mechanism, and the gear 127 is meshed with the movable gear 1202 of the reel shaft drive gear section 120. As a result, the rotation of the capstan shaft 122 is transmitted to the movable gear 1202 via the small diameter gear 124 and the gear 127, and the gear 1202 is rotated.
Furthermore, this rotation is transmitted to the reel shaft 13 via the slip material 1203, and the reel shaft 13 is rotated in the tape winding direction. At this time, the slide plate 193 is positioned downward in the figure.

1': As it slides in the direction, the biasing force of the spring 133 increases and eventually exceeds the biasing force of the spring 134, so the lever 142 is rotated clockwise and the pinch roller 131 comes into contact with the capstan shaft 122. nru.

Therefore, the magnetic tape is driven by the capstan shaft 122 and is connected to the movable gear 1 via the slip material 1203.
The driving force of 202 allows the tape to be wound onto the take-up reel shaft, thereby making it possible to record business matters at the other end.

In this case, even if the take-up amount in one loop and the tape feed amount on the capstan shaft i22 do not match with each other through the slip material 1203, this can be absorbed by the slip of the slip material 1203, and the tape running can be prevented. It can be made stable.

Next, in order to retrieve the contents of the recorded tape recorded in the above manner at a location outside the home, the plunger 195 is first turned off by a control circuit (not shown).

Then, the lever 17 is locked by the claw portion 194 as shown in the figure. Further, when the plunger 195 is turned off, the pressing force of the small diameter gear 124 by the lever 20 in FIG.
It is possible to mesh with the fixed constant gear 1201 side.

In this state, first, to rewind the tape, the motor 15 is rotated counterclockwise. However, at this time, lever 17
is locked by the pawl 194, and the gear 18 is the large diameter gear 1.
23, the rotation of the rotating shaft 151 is transmitted to the large diameter gear 123 via the pinion gear 16 and gear 18, and the gear 123 rotates in the direction opposite to the arrow shown in the figure. Then, the lever 125 is rotated counterclockwise by the flexible mechanism, so that the gear 128 meshes with the reel drive gear 211 for feeding the tape. As a result, the rotation of the large-diameter gear 123 is transmitted to the gear 121 via the small-diameter gear 124 and the gear 128, and the gear 121 is rotated in the tape rewinding direction. At this time, the slide plate 193 is located at the upper side in the figure and the biasing force of the spring 133 is reduced, so the lever 132 is maintained at the position shown in the figure by the springs 133 and 134, and the pinch roller 131 is moved toward the capstan shaft 122.
It's more separated.

Therefore, the magnetic tape is sent out by the driving force of the gear 121 and rewound toward the IJ-roll shaft.

On the other hand, to fast-forward the tape, the motor 15 is rotated clockwise. Then, in this case as well, the lever 17 is moved to the claw portion 194.
Since the gear 18 remains locked, the large diameter gear 123
The rotation of the rotating shaft 151 is caused by the small diameter gear 16,
The information is transmitted to the large-diameter gear 123 via the gear 18, and the gear 1
23 rotates in the direction of the arrow shown in the figure. Then, lever 125
is caused by the friction mechanism. As a result, large diameter gear 1
23 is transmitted to the fixed gear 1201 via the small-diameter wheel 125 and the gear 127', so the gear 1201 is rotated in the tape fast-forwarding direction. At this time as well, since the slide plate 193 is located at the upper side in the figure, the pinch roller 13
1 is separated from the capstan shaft 122.

Therefore, the magnetic tape is rapidly fed toward the take-up reel shaft by the driving force of the gear 1201.

After rewinding or fast forwarding the tape in this manner, to set the playback mode, the plunger 195 is turned on again by a control circuit (not shown) to release the lock of the lever 17 by the claw portion 194. In this state, the motor 15 is rotated clockwise, the gear 18 is meshed with the large-diameter gear 123 via the renocouple 17, the capstan shaft 122 and the large-diameter tooth j123 are rotated in the direction of the arrow shown in the figure, and the lever is rotated. 1
The gear 120 for driving the tape winding reel shaft is slid downward as shown in the figure, and the pinch roller 131 is brought into contact with the capstan shaft 122 via the lever 132 due to the increased biasing force of the spring 133. Since they are in contact with each other, the cassette tape is driven by the capstan shaft 122 and wound onto the take-up reel shaft, making it possible to reproduce the recorded content.

Therefore, according to such a configuration, when setting the recording or playback mode, the tape take-up reel shaft can be driven by the movable gear via the slip material, so that the change in the tape winding diameter on the take-up reel shaft causes the reel to change. Even if the amount of tape winding on the stand does not match the amount of tape feeding on the capstan shaft, this discrepancy can be absorbed by the above-mentioned slip material. This eliminates the possibility of loosening and allows the tape to run more stably.

Note that the gear 127 is made thicker than that shown in FIG. 2, and when the gear is rising, the gear 1201 and the gear 1202 are
It is also possible to make it mesh with the gear 1202 at the same time, and only with the gear 1202 when the gear 17 is descending.

In this way, the slip material 1203 can be
Drive loss is reduced without being affected by

〔Effect of the invention〕

It is possible to stabilize the tape running in the recording and playback modes, and as a result, good recording and playback can be expected.

[Brief explanation of drawings]

Is Figure 1 an implementation of this invention? IJ 2 is a schematic configuration diagram shown in FIG. 2, a schematic configuration diagram taken along II in FIG.
FIG. 3 is a schematic configuration diagram taken along the line II-X in FIG. 1. 11... First tape drive section 12... Second tape drive section 110, 111, 12
0.121...Gear 113.114.117.11
8.119.1201.1202.123124, 12
7.128...Gear 1203...Slip material 12
41... Spring 124a... Small diameter portion 125a...
Hole 126...Friction material 112.122...Capstan shaft 131.141...Pinch roller 132
．． 142... Lever 133. 143... Spring 15... Motor 151.
... Rotating shaft 16.18 ... Gear 17 ... Lever
17a... Hole 181... Friction material 19... Lock part 191.19
2... Pin 193... Slide plate 194... Claw portion 195... Granger 20... Lever 21.
...Pin 22...splash

Claims (3)

[Claims] (1) Tape winding % A fixed gear provided on the IJ-reel shaft and fixed to the take-up reel shaft, a movable gear rotatably provided on the take-up reel shaft, and a gear interposed between these gears. a driving gear portion having a slip material provided thereon; a driving gear portion provided on a tape feeding reel shaft opposite to the tape winding reel shaft; and a center ÷→ gear having a capstan shaft. and a capstan shaft is provided to be movable up and down along the capstan shaft according to the operation mode, and the capstan shaft is attached to the take-up reel shaft driving gear portion according to the rotational direction of the gear having the capstan shaft. A first means for providing rotation of a gear having a gear and allowing the gear to mesh with a fixed or movable gear of the tape winding reel drive gear section by vertical movement along the capstanic acid. and a motor that rotates a gear having the capstan shaft, and second means for regulating contact of the pinch roller with the capstan shaft and controlling vertical movement of the first means. A tape drive device characterized by: (2) The first means includes a cylindrical gear that rotates together with the capstan shaft and is movable up and down along the capstan shaft, and is rotatably provided on this gear via a friction mechanism. A lever and a gear provided on the lever that transmits the rotation of the cylindrical gear to the driving gear portion of the tape winding reel shaft or the tape feeding reel shaft according to the rotation direction of the gear having the capstan shaft. 12. The tape drive device according to claim 11, characterized in that: (3) The second means includes a slide plate having a pin that restricts the movement of the pinch roller relative to the capstan shaft, a plunger that drives the slide of the slide plate, and a plunger that operates in conjunction with turning on and off of the plunger. 1
3. The tape drive device according to claim 2, further comprising a lever for vertically moving said means.