JPS58188352A - Tape driving device of tape recorder - Google Patents

Abstract

PURPOSE:To prevent the deformation of a pinch roll to the utmost, by placing the pinch roll at a location apart from a capstan shaft except at the electric conduction even at the set mode, and press-contacting the pinch roll on the capstan shaft only at the conduction. CONSTITUTION:In the state as shown in the figure, a solenoid 5 is inactive, a plunger 6 is projected, the pinch roll 23 and a capstan 11 are placed apart and an idler 31 and an operating gear 29 are also located apart. When an electric signal enters and a motor 2 is driven forward, the solenoid 5 is operated, a driving shaft 3 of the motor 2 and a motor pulley 4 are rotated clockwise, and a flywheel 10, the capstan shaft 11, a driving gear 28, a transmission pulley 14, and a transmission gear 36 are rotated clockwise with belts 13 and 16. A plunger 6 of the solenoid is pushed in and a head chassis 9 is operated at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape drive device for a tape recorder that is suitable for use in answering machines.

In the previously used tape recorders, the pinch roller was always pressed against the middle shaft during setup. As a result, there was a risk that the tape would not only be deformed, but also lose pressure on the tape.

In view of the above points, the present invention is designed such that even when setting the pinch roller, except when energizing, the pinch roller is separated from the capstan shaft and placed in the next position, and the pinch roller is brought into pressure contact with the gold capstan shaft only when energizing. This was done to prevent deformation of the beach roller and pressure loss of the tape as much as possible, as well as to reduce the number of parts, simplifying the operation of each part, and reducing costs.

For this purpose, in the present invention, a head chassis including a head and a pinch roller is connected to a plunger having a tendency to protrude by connecting a single solenoid that is energized in response to a certain signal, and the plunger is connected to a plunger having a tendency to protrude. The head shear 7 is operated in conjunction with the retraction operation of the pinch roller, and the head shear 7 is brought into pressure contact with the capstan shaft of the flywheel, which is rotated by receiving the torque tube of a single motor that rotates the pinch roller in forward and reverse directions. An idler that moves in conjunction with the operation of the chassis is interposed between the drive wheel of the capstan shaft and the operating gear of the reel receiver, while the transmission rotates in response to the rotational force of the single motor that rotates forward and backward. A gear is pivotally supported facing the operating gear and the return operating gear of a pair of reel receivers, and a transmission switching arm that contacts the transmission wheel and rotates by friction in the direction of rotation of the transmission wheel is attached. The switching gear is coaxially supported with the transmission gear, and the switching gear is pivotally supported on a shaft pin provided at the tip of the transmission switching arm, so that the switching gear is selectively meshed with the operating gear and the retraction operating gear. t-take.

The present invention will now be described in detail with reference to preferred embodiments shown in the drawings.

In the figure, 1 is a chassis, and a single forward/reverse motor 2 is fixed to the corner of the chassis, that is, the upper right part of the plane.
is made to protrude from the back surface of the chassis 1, and a motor pulley 4 is attached to this drive shaft 3.

A solenoid 5 is fixed to the chassis 1 adjacent to the motor, and has a plunger 6t which is given a protruding elasticity by the expansion elasticity of a spring 7.
A head chassis 9, which will be described later, is connected to the head chassis 9 via a plunger arm 8. The motor 2 and solenoid 5 are operated by a certain signal, for example, a telephone ringing signal.

Further, in the figure, reference numeral 10 denotes a flywheel, which has a capstan shaft 11 at its center, and is attached to the center position of the lower plane of the chassis 1 by a mounting bracket 12 that rotatably penetrates the capstan shaft 11fr, similar to known devices. There is. That is, the flywheel 10 is positioned on the back surface of the chassis 1, and the capstan shaft 11 is made to protrude from the top surface of the chassis (
3111.

Figure 7, bottom). A bell (13t) hook is passed between the flywheel 10 and the motor pulley 4 to form the capstan shaft 11 as a rotating part.

In addition, 14 in the figure is a transmission pulley for switching between fast forwarding and rewinding of the tape using a gear system, which will be described later, and is pivotally supported on a transmission pulley pin 15 that stands up on the member side of the chassis 1 at approximately the center position. A belt 16 is also passed between the transmission pulley 14 and the motor pulley 4.

In the figure, 17 and 18 are a pair (B reel receiver, chassis 1
The bracket 1 is located on the back side of the bracket.
The head chassis 9, connected to the plunger 6 of the solenoid 5, is rotatably erected at the chassis 1 and protrudes from the surface of the chassis 10 through nine through holes 20 and 20. The head 21 and the tape guide 22 are mounted on the shear 71 in parallel with the shear 71 so as to be slidable at a slight distance from the shear 71.
And a pinch row 2-23 is provided. This head chassis 9 has notches 24, 24 on the left and right positions so as not to come into contact with the reel receivers 17, 18, and a long hole 25 approximately in the center for receiving the mounting bracket A12 of the capstan shaft 11.
It is perforated. Then, this head shear-covered bin was intervened. Furthermore, this head chassis 9 is formed with a V-shaped notch 2T at the top of the plane, thereby ensuring that a switching gear (to be described later) for fast forwarding and rewinding the tape is kept at a neutral position during tape play. It is.

A drive gear 28t located on the back side of the chassis 1 is fixedly attached to the capstan shaft 11 of the flywheel 10, and the drive gear 28t is actuated by the reel holder 17 and the single 29 is wound back by the reel holder 18. The wheel 30 is installed, and these gears 29 and 30 are positioned in the sash of the chassis 1. Further, 31 is an idler which is not a gear but is always meshed with the drive gear 28. And this idler 31
The head chassis 9 is centered around the capstan shaft 11.
The idler arm 32 is pivoted to rotate in response to the operation of the idler arm 32. That is, this idler arm 32 is connected to the shear 71.
The head chassis 9 is positioned between the head chassis 9 and the capstan shaft 11, and is rotatable around the capstan shaft 11. At its tip, a nine idler bin 33 is formed in the chassis 1, and a nine circular arc-shaped through hole 34 is provided. is passed through and protrudes from the back side of the chassis 1, and the idler 31 is pivotally supported on this idler bin 33. A driven pin 35 for upward switching operation is provided at the tip of this idler arm 32, and this is inserted into the elongated notch hole 26 of the head chassis 9, and the idler arm 32 is rotated by the operation of the head shear 79. That's what I do.

That is, the solenoid 5 is activated, the plunger 6 is retracted, and the head chassis 9 is in the play operation position, that is, the position where the pinch loaf 23 is in contact with the capstan shaft 11 (second illustrated position), and the idler 31 is activated to operate the reel receiver 17. - The idler 31 and the operating gear 29 are disengaged when the solenoid 5 is in the non-operating position W (the first illustrated position), and the idler 31 is disengaged from the operating gear 29 (the S position shown in the figure). 3. Hirozu position [).

Next, a single transmission tooth 36 is pivotally supported on the transmission pulley pin 15, and this transmission gear 36 is configured to rotate forward and backward integrally with the transmission pulley.

Further, this transmission pulley pin 15 has a shaft pin 37 for transmission switching positioned between the chassis 1 and the transmission gear 36, and a shaft pin 38 for the switching gear. This shaft pin 38 VC is fixed and is always engaged with the transmission gear 36. By the switching rotation of the transmission switching arm 37, the switching gear 39 is connected to the operation wheel 29 of the reel receiver 1T and the reel receiver. It is designed to switch and mesh with the return operation gear 30 of No. 18. The switching operation of the transmission switching arm 37 is driven by the movement of the transmission gear 360, and the meshing shape m with the operation gear 29 or the winding operation gear 30 is caused by the frictional force between the arm 37 and the transmission gear 36. We are trying to ensure that.

That is, when the motor 2 rotates forward and the transmission pulley 14 and the transmission gear 36 rotate in the direction of the hour hand in the figure, the transmission gear 36
The transmission switching arm 37 is rotated clockwise in FIG. When the motor 2 rotates in the reverse direction, the transmission switching arm 3T similarly rotates in the counterclockwise direction in FIG.

In addition, 40 in the figure is a pinch roller bracket, 41.4
1 is a cassette guide bin, 42.42 is a cassette holder.

The operation of the apparatus of the present invention constructed as described above will be explained below.

FIG. 1 and FIG. 3 show a state in which the apparatus of the present invention is not manufactured at all. In this state, the solenoid 5 is inactive, the plunger 6 is in the protruding position, the pinch roller 23 and the capstan shaft 11 are at a distant position, and the idler 31 and the operating gear 2B are also at nine positions apart.

Then, when a telephone signal is received and the motor 2 rotates in the forward direction, the solenoid 5 is energized and activated, and the drive shaft 3 and motor pulley 4 of the motor 2 rotate in the direction of the hour hand in the figure, and the belts 13 and 16 rotate the flywheel. 14. Capstan shaft 11, drive details 28 and transmission goo! J-
14, each of the transmission gears 36 similarly rotates clockwise. At four o'clock, the plunger 6 of the solenoid 5 is retracted, and the head chassis 9 is operated from the seventh illustrated position to the second illustrated position. Then, the pinch roller 23 is connected to the capstan shaft 1.
1 and the shaft pin 38 of the transmission switching arm 37
The upper end 38' is guided by the V-shaped notch 27 to move the switching gear 39 to the neutral position, that is, the operating gear 29 and the return operating gear 3.
Position it in a position where it does not mesh with any of the points (9th
(Illustrated). Furthermore, the driven protrusion 35 of the idler arm 32 receives the moving force of the head chassis 9, causing the idler arm 32 to rotate clockwise in FIG. It meshes with the operating gear 29 of the reel receiver 17 (not shown in Figure D).

Therefore, the rotational force of the driving gear 28 is transmitted to the operating gear 29 via the idler 31, and the reel receiver 17t-M rotates in the direction of the hour hand in the upper figure. This allows the tape (not shown)
is sent at a constant speed and played or recorded.

When the call is stopped in this way, the motor 2 is stopped 4 and the power to the solenoid 5 is cut off, restoring the inoperative state shown in FIGS. At the same time as the idler 31 is released from the operating gear 29
move away from

Next, when rewinding the tape fed by the above-described operation, by pressing a rewind operation button (not shown) and rotating the motor 2 in the reverse direction, the transmission pulley 14 changes from the state shown in FIGS. 1 and 3. rotates in the counterclockwise direction in the diagram, and the transmission wheel 36
rotate in the same direction.

As a result, the transmission switching arm 31, which is frictionally connected to the transmission gear 36, is frictionally activated and rotated in the counterclockwise direction around the transmission pulley pin 15 in FIG. The gear 39 meshes with the unwinding gear 30 (as shown in the fifth figure).

Therefore, the rotation of the transmission gear 36 in the counterclockwise direction in FIG. S is transmitted via the switching gear 39 to the winding operation gear 30, and the winding operation gear 30 also rotates in the counterclockwise direction in FIG. As a result, the reel receiver 18 rotates counterclockwise in FIG. 1 to perform a tape tube winding operation.

Furthermore, in order to fast-forward the tape, if the fast-forward operation button (not shown) is pressed to rotate the motor 2 in the forward direction, the transmission pulley 14 will rotate in the direction of the hour hand in the figure from the state shown in Figs. 1 and 3 or WCS. , rotates the transmission gear 36 in the same direction. As a result, the transmission switching arm 37 that is frictionally connected to the transmission gear 36 is rubbed, and the upper transmission pulley pin 1 in FIG.
5 in the clockwise direction, and the switching gear 39 pivotally supported on the shaft pin 38 meshes with the operating gear 29 of the reel receiver 1T (position 4a at the top of FIG. 5).

Therefore, the rotation of the transmission gear 36 in the clockwise direction in FIG.
It is transmitted to the operating gear 29 through the single 39, and the operating gear 2
9 also rotates in the direction of the upper hour hand in FIG.

As a result, the reel receiver 17 rotates clockwise in FIG.
Fast forward the tape.

As mentioned above, the device of the present invention has a head and a pinch roller.
The head chassis is connected to a single solenoid that is energized in response to a certain signal, and the nine protrusions are connected to the southward plunger, and the head chassis is activated in conjunction with the retraction of the plunger by energizing the solenoid. Since the pinch row 2- is activated and presses into contact with the capstan shaft of the flywheel, which rotates under the rotational force of a single motor that rotates the pinch row 2- in forward and reverse directions, the above solenoid can be energized only during regeneration or Fi pass noise. Therefore, it is not necessary to press the pinch roller against the capstan shaft and press the button except when recording or recording.
When setting it up, the pinch roller is removed like the previous device.
There is no need to keep the capstan in pressure contact with the capstan shaft at all times. As a result, not only is it possible to prevent the pinch roller from deforming, but also the pressure applied to the tape is released, which has the advantage of preventing tape O pressure loss.

kVc In the present invention, a transmission gear that rotates in response to the rotational force of a single motor that rotates forward and backward is operated by a pair of reel receivers.
A transmission switching arm is pivotally supported facing the wheel and the winding operation gear, and is coaxially supported with the transmission gear, and is in contact with the transmission gear and frictionally co-moves in the rotational direction of the transmission gear. The switching gear is pivotally supported on the shaft pin provided at the tip of the operating arm, and this switching gear is engaged with the operating gear and the winding gear, so that switching between fast forwarding and rewinding of the tape is possible. ! 1
1! The mechanism has an extremely simple structure, which has the advantage of omitting the complicated structure found in previously known devices.This has the effect of reducing the number of parts required for the entire drive device and reducing costs. has.

Although the above embodiment has been described as a tape recorder for an answering machine, it goes without saying that the device of the present invention can also be used in a general cassette tape recorder or an audio tape recorder.

[Brief explanation of drawings]

The drawings show preferred embodiments of the device of the present invention.
The figure is a plan view showing the inoperative state,! ! Figure 42 is a plan view showing the operating state, with a part of the head chassis cut away, *, Figures 7 to S are plan views mainly showing the gear system, and Figure 3 shows the non-operating state. , FIG. 9 shows the state during playback operation, FIG. Sectional view along VI Vl# on Okajiku wJ1 diagram, No. 3
The figure also shows a sectional view taken along the line ■-■ in FIG. 1. 2...Motor, 5...Solenoid, 6...Plunger, 9...
・・・・・・Head chassis, 10・・・・・・・・・
Flywheel, 11... Cab stan shaft, 14... Transmission pulley, 15...
Transmission pulley pin, 17...Reel holder, 18...Reel holder, 21...
...Head, 23...Pinch roller-128... Drive gear, 29...
...Operation gear, 30...Rewinding operation gear, 31...
......Idler, 36...Transmission gear, 37...Transmission switching arm, 38...
...Axis pin, 39...Switching gear.

Claims (1)

[Claims] A head chassis equipped with a head and a pinch roller is connected to a single solenoid that is energized in response to a certain signal, and is connected to a plunger that has a tendency to protrude, and is linked to the retraction operation of the plunger when the solenoid is energized. The head shear 7t is operated so that the pinch roller is brought into pressure contact with the capstan shaft of the flywheel which rotates under the rotational force of a single motor which rotates the pinch roller in forward and reverse directions, and in conjunction with the operation of the head chassis. An idler that is moved by the drive gear of the capstan shaft and an operating gear of the reel receiver is interposed between the drive gear of the capstan shaft and the operating gear of the reel receiver. A transmission switching arm is pivotally supported so as to face the operating gear and the winding operating gear, and a transmission switching arm is coaxially supported with the transmission gear and rotates in the rotational direction of the transmission gear by friction with the transmission gear. , a tape recorder characterized in that a switching gear is pivotally supported on a shaft pin provided at the tip of a transmission switching arm, and the switching gear is selectively engaged with the above-mentioned operation and rewinding operations. tape drive.