JP2000132888A - Tape drive mechanism and tape recording or reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing cost by appropriately performing running of a tape and rotation of a rotary drum by one motor. SOLUTION: This device is provided with a drive motor 9, a rotary drum 4a having a head and driven by the drive motor, a feeding shaft 14 to which a drive force of the driven motor 9 is transmitted and which is rotated, one pair of tape reels 3L, 3R winding a tape 7, and a belt 17 for tape running fed by rotation of the feeding shaft 14 and pressed and contacted to one pair of tape reel through a tape wound on one pair of a tape reel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tape driving mechanism and a tape recording or reproducing apparatus. More specifically, the present invention relates to a technique for appropriately reducing the manufacturing cost by appropriately running a tape and rotating a rotary drum by a single motor.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional tape drive mechanism provided in a tape recording or reproducing apparatus, for example, a video camera or the like, which can record and / or reproduce signals on and from a tape. Show.

[0003] The tape drive mechanism a is configured by arranging necessary members on a mechanical chassis b.

A pair of tape reels c1 and c2 are rotatably supported on the mechanical chassis b so as to be separated from each other.
The tape reel c1 located on the left side is a supply side tape reel for supplying the tape, and the tape reel c2 located on the right side is a take-up side tape reel for winding the tape sent from the tape reel c1. It is provided as.

A drum d is erected on the mechanical chassis b, and the drum d is inclined at a predetermined inclination angle. The drum d has a rotating drum e located above and a fixed drum f located below it.

The mechanical chassis b has guide shafts g, g,.
The guide shafts g, g,... Function to adjust the height and position of the tape h wound around the tape reels c1, c2. And the mechanical chassis b
, Two rollers i and j are arranged left and right with a drum d interposed therebetween, and the roller j located on the right side is formed as a pinch roller. The mechanical chassis b has a capstan shaft k pressed against the roller j via the tape h.
Are rotatably arranged.

Each end of a tape h is attached to the tape reels c1 and c2.
j, guide shafts g, g,... and a drum d are wound around and passed through a predetermined tape path.

In the state where the tape h is wound around each member as described above, the portion of the tape h wound around the roller j is held between the roller j and the capstan shaft k. .

A drum motor 1 is disposed below the drum d, and a rotating drum e of the drum d is connected to the drum motor l.
It is rotated by the driving force of.

A capstan motor m is disposed on the rear side of the mechanical chassis b, and a motor shaft of the capstan motor m is formed as a capstan shaft k. And
The capstan motor m has a gear portion (not shown) that is rotated integrally with the capstan shaft k.

A first intermediate gear n and a second intermediate gear o meshed with each other are arranged on the rear side of the mechanical chassis b, and the first intermediate gear n is meshed with a gear portion of the capstan motor m. ing. The second intermediate gear o is meshed with a reel gear (not shown) provided integrally with the tape reel c2.

The capstan motor m is rotated, and the tape h is sent out by the capstan shaft k and the roller j, and runs at a constant speed. Then, the driving force of the capstan motor m is transmitted to the tape reel c2 via the first intermediate gear n and the second intermediate gear o, and
2 is rotated, and the traveled tape h becomes a tape reel c2.
It is wound up.

The tape reel c2 is brought into contact with a reel gear integrally formed therewith, for example, with a predetermined frictional force. The tape h is appropriately slipped with respect to the reel gear, and the tape reel c2 is appropriately wound in accordance with the winding diameter of the tape h that changes every moment so that excessive tension is not applied to the tape h.

At the same time as the rotation of the capstan motor m, the drum motor 1 is rotated, and the rotating drum e is rotated to perform recording or reproduction on the tape h.

[0015]

However, in the above-described conventional tape driving mechanism a, the rotating drum e is rotated by the drum motor l, and the tape h is run and wound by the capstan motor m. Tape h
Recording or reproduction for

Therefore, there are problems that the number of parts is large and the power consumption is large because the two motors 1 and m are provided, so that the manufacturing cost is high. In particular, when considering the manufacture of a tape recording or reproducing apparatus in which some or all of the components are recyclable, for example, the production of a recyclable video camera, it is highly necessary to provide the video camera at a low cost, which increases the cost. Is a very big problem.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems and to reduce the manufacturing cost by appropriately driving the tape and rotating the rotating drum by one motor.

[0018]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a tape driving mechanism according to the present invention comprises a driving motor, a rotating drum rotated by the driving motor and having a head, and a driving force of the driving motor. Is transmitted and rotated, a pair of tape reels for winding the tape, and pressed against the pair of tape reels through the tape wound by the rotation of the feed shaft and wound on the pair of tape reels. And a tape running belt.

Further, the tape recording or reproducing apparatus of the present invention
In order to solve the above-mentioned problem, a driving motor, a rotating drum rotated by the driving motor and having a head, a feed shaft to which driving force of the driving motor is transmitted and rotated, and a head of the rotating drum include: A pair of tape reels that wind a tape on which recording or reproduction is performed by helical scanning along the data track, and a pair of tape reels that are sent by the rotation of the feed shaft and wound around the pair of tape reels And a tape running belt pressed against the tape reel.

Therefore, in the tape driving mechanism of the present invention and the tape recording or reproducing apparatus of the present invention, the rotating drum is rotated by the driving motor, and the driving force of the driving motor is applied to the tape running belt via the feed shaft. The tape is transmitted and travels, and the pair of tape reels is rotated.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the tape drive mechanism and the tape recording or reproducing apparatus of the present invention will be described below with reference to the accompanying drawings.

In the embodiment described below, the tape recording / reproducing apparatus of the present invention is applied to a small portable video camera, and the tape driving mechanism of the present invention is provided with a tape provided in the video camera. This is applied to a drive mechanism. In this video camera, a tape is previously passed through a predetermined tape path.

First, a first embodiment of the present invention will be described with reference to FIG.

The video camera is provided with necessary members and mechanisms in an outer casing, and is dedicated to video recording. A tape driving mechanism 1 is provided in an outer casing of a video camera, and the tape driving mechanism 1 includes a mechanical chassis 2 provided with necessary members.

Two tape reels 3L, 3R are rotatably supported on the mechanical chassis 2 so as to be separated from each other.
The tape reel 3L located on the left side is a supply side tape reel for supplying the tape, and the tape reel 3R located on the right side is a take-up side tape reel for winding the tape sent from the tape reel 3L. It is provided as.

A drum 4 is provided upright on the mechanical chassis 2, and the drum 4 is inclined slightly to the left with a predetermined inclination angle. The drum 4 has a rotating drum 4a located above and a fixed drum 4b located below it.

The mechanical chassis 2 has guide shafts 5, 5,.
・ It is standing. A pinch roller 6 is rotatably supported on the mechanical chassis 2 to the right of the drum 4.

The tape 7 has both ends attached to the tape reels 3L and 3R, respectively. The recording surface faces outward, that is, the recording surface does not face the winding surface of the tape reels 3L and 3R. , Wound around 3R,
It is passed through a predetermined tape path. That is, the tape 7 pulled out from the tape reel 3L is sequentially wound around the guide shafts 5, 5, 5 → the drum 4 → the guide shaft 5 located on the right side of the drum 4 → the pinch roller 6 located on the left side of the drum 4. It reaches reel 3R.

When the tape 7 is wound around each member as described above, a portion of the tape 7 wound around the pinch roller 6 is rotatably disposed on the pinch roller 6 and the mechanical chassis 2. It is in a state of being pinched by the shaft 8.

A drive motor 9 is arranged below the drum 4, and the upper end of a motor shaft 9 a of the drive motor 9 is
, And the rotating drum 4 a is rotated by the driving force of the driving motor 9. As the drive motor 9, a drum motor usually provided in a video camera for rotating a rotary drum is used.

A first pulley 10 is arranged on the rear side of the mechanical chassis 2. The first pulley 10 includes a disc-shaped belt winding portion 10a and a shaft portion 10b fixed to the center of the belt winding portion 10a.
a and the shaft portion 10b are integrally rotated.

A second pulley 11 is disposed on the rear side of the mechanical chassis 2. The second pulley 11 includes a disc-shaped belt winding portion 11a and a shaft fixed to the center of the belt winding portion 11a, and the shaft is formed as the above-described capstan shaft 8. . And the second
In the pulley 11, the belt winding portion 11a and the capstan shaft 8 are integrally rotated.

The first belt 1 is located between the motor shaft 9a of the drive motor 9 and the belt winding portion 10a of the first pulley 10.
2 are wound. Further, a second belt 13 is wound between the shaft portion 10a of the first pulley 10 and the belt winding portion 11a of the second pulley 11. Therefore, when the driving motor 9 is rotated, the driving force is applied to the first belt 1.
2 to the first pulley 10 to rotate the first pulley 10, and further rotate the first pulley 10 to transmit the driving force of the drive motor 9 to the second pulley 11. The capstan shaft 8 is rotated.

A feed shaft 14 is rotatably supported by the mechanical chassis 2, and the feed shaft 14 is positioned between the tape reels 3L and 3R toward the drum 4. A third belt 15 is provided between the capstan shaft 8 and the feed shaft 14.
Is wound. The third belt 15 applies the driving force of the driving motor 9 to the feed shaft 1 via the capstan shaft 8.
4 is provided as driving force transmitting means for transmitting the driving force to the driving force.

Rotating shafts 16, 16 are rotatably supported by the mechanical chassis 2, and the rotating shafts 16, 16 are located outside the tape reels 3L, 3R, respectively.
Are located on the opposite side of the drum 4. And
A tape running belt 17 is wound between the feed shaft 14 and the rotating shafts 16, 16.

The tape running belt 17 is wound between the feed shaft 14 and the rotary shafts 16, 16 as described above, and the feed shaft 14, the rotary shafts 16, 16 and the tape reel 3.
Due to the relative positional relationship with the tapes L and 3R, the tape is in contact with the tape 7 wound around the tape reels 3L and 3R. The tape running belt 17 is pressed against the tape reels 3L and 3R via the tape 7, respectively.

As described above, the third belt 15 is wound between the capstan shaft 8 and the feed shaft 14, and the tape running belt 17 is moved between the feed shaft 14 and the rotary shafts 16, 16. And the tape reels 3L, 3R via the tape 7 wound on the tape reels 3L, 3R, respectively.
By being pressed against R, the drive motor 9 is rotated and its driving force is transmitted, and when the capstan shaft 8 is rotated, the feed shaft 14 is rotated and the tape running belt 17 is fed. Then, when the capstan shaft 8 is rotated and the tape running belt 17 is fed, the tape 7 runs at a constant speed, and the pair of tape reels 3L and 3R are rotated respectively. 7 is supplied, and the tape 7 is wound around the tape reel 3R.

When the drive motor 9 is rotated, the rotary drum 4a is rotated in a predetermined direction, and a head (not shown) provided on the rotary drum 4a is helically scanned along a data track of the tape 7 to perform a signal to the tape 7. Is recorded.

As described above, in the tape driving mechanism 1, the rotating drum 4 a is rotated by the driving motor 9 and the driving force of the driving motor 9 is transmitted to the tape running belt 17 via the feed shaft 14. Then, the tape running belt 17 is fed, the tape 7 runs at a constant speed, and the pair of tape reels 3L and 3R are rotated.

Therefore, the running of the tape 7 and the rotating drum 4
a is appropriately rotated by one drive motor 9, the number of components and power consumption are reduced, the manufacturing cost of the tape drive mechanism 1 is reduced, and the tape drive mechanism 1 is further reduced.
Can be reduced in manufacturing cost of the video camera provided with.

In a recycle video camera in which some or all of the components are recyclable, it is highly necessary to provide the video camera at low cost. The above-described reduction in manufacturing cost is particularly effective.

In the above-described tape drive mechanism 1, since the drum motor normally provided in the video camera for rotating the rotary drum is used as the drive motor 9, the position of the drive motor 9 is changed. It is not necessary to use another new motor as the drive motor 9,
The tape drive mechanism 1 can be easily manufactured, and the manufacturing cost can be further reduced.

The drive motor 9 may be a motor other than the drum motor, for example, a capstan motor for rotating a capstan shaft or a reel motor for rotating a tape reel. Since the motor 8 is rotated at a higher speed than the shaft 8 and the tape reels 3L and 3R, when a motor other than the drum motor is used as the drive motor 9, a speed-increasing mechanism is generally provided which is relatively difficult to manufacture and increases cost. Must be
Manufacturing costs cannot be reduced.

Therefore, when a drum motor is used as the drive motor 9 as described above, a speed reduction mechanism that is relatively easy to manufacture can be generally provided, which contributes to a reduction in the manufacturing cost of the tape drive mechanism 1.

Further, in the tape drive mechanism 1 described above, since the capstan shaft 8 which presses against the pinch roller 6 is provided, the running speed of the tape 7 becomes extremely stable.

Then, the driving force of the driving motor 9 transmitted to the capstan shaft 8 is transmitted to the feed shaft 14 by the third belt 15 provided as driving force transmitting means. No loss occurs between the amount sent by the pinch roller 6 and the amount sent by the pinch roller 6 and the amount sent by the tape running belt 17 wound on the feed shaft 14, and excessive tension is applied to the tape 7, Alternatively, the running stability of the tape 7 can be ensured without causing slack.

The signal is recorded on the tape 7 as follows (see FIG. 2).

A video signal output from a CCD (Charge Coupled Device) image sensor 18 is digitally converted by an A / D converter 19 to be video data, compressed by a video compressor 20 and input to a multiplexer 21. On the other hand, the audio signal output from the stereo microphone 22 is digitally converted by the A / D converter 23 to be audio data and input to the multiplexer 21.

The video data and the audio data are combined into one series of data by the multiplexer 21, and ECC (Error Correcting Code) information required at the time of demodulation is added to E.
The signal is added by the CC formatter 24 and amplified by the recording amplifier 25. The amplified data is recorded on the tape 7 via a head provided on the rotating drum 4a.

CCD image sensor 18, A / D converter 1
9, video compressor 20, multiplexer 21,
The stereo microphone 22, the A / D converter 23, the ECC formatter 24, and the recording amplifier 25 are provided as signal processing means 26 for processing a video signal and an audio signal as described above, and the signal processing means 26 The video signal and the audio signal are processed in response to the command signal. Further, the drive motor 9 is rotated based on a command signal sent from the mechanical controller 27a of the system controller 27.

Next, a second embodiment of the present invention will be described with reference to FIG.

The tape drive mechanism 1A according to the second embodiment described below is different from the tape drive mechanism 1 described above in that the tape 7 has a tape reel 3L, 3R with its recording surface facing inward. The only difference is that the tape drive mechanism 1A is wound around the tape drive mechanism 1A.
Only the different parts will be described in detail, and the other parts will be denoted by the same reference numerals as those of the same parts in the tape drive mechanism 1, and description thereof will be omitted.

In the tape drive mechanism 1A, the tape 7
Is wound on the tape reels 3L and 3R with both ends attached to the tape reels 3L and 3R, respectively, with the recording surface facing inward, that is, with the recording surface facing the winding surface of the tape reels 3L and 3R. And is passed through a predetermined tape path. Accordingly, the tape running belt 17 is wound between the feed shaft 14 and the rotating shafts 16, and the surface of the tape 7 wound around the tape reels 3 </ b> L, 3 </ b> R on the opposite side to the recording surface ( Hereinafter, it is referred to as “non-recording surface”.)

As described above, in the tape drive mechanism 1A, the tape 7 is run while the tape running belt 17 is in contact with the non-recording surface of the tape 7 to record a signal. The recording surface can be protected.

It should be noted that the specific shapes and structures of the respective parts shown in each of the above-described embodiments are merely examples of the embodiment of the present invention, and the present invention is not limited thereto. The technical scope of the invention should not be construed as being limited.

[0056]

As apparent from the above description, the tape driving mechanism of the present invention is a tape recording or reproducing apparatus for recording or reproducing data on or from a tape by a helical scan method. A rotating drum having a head and a rotating head, a feed shaft to which the driving force of the drive motor is transmitted and rotated, a pair of tape reels for winding the tape, and a pair of A tape running belt pressed against a pair of tape reels via a tape wound on the tape reel, and the driving force of the drive motor is transmitted to the tape running belt via a feed shaft to run the tape. And a pair of tape reels are respectively rotated.

Therefore, since the running of the tape and the rotation of the rotary drum are properly performed by one drive motor, the number of components and power consumption are reduced, and the manufacturing cost of the tape drive mechanism can be reduced.

In the invention described in claim 2, a drum motor for rotating the rotary drum is used as the drive motor, and the drum motor is normally provided for rotating the rotary drum. Since there is no need to change the arrangement position of the drive motor, the tape drive mechanism can be easily manufactured, and the manufacturing cost can be further reduced.

According to the third and fourth aspects of the present invention, a capstan shaft and a pinch roller pressed against the capstan shaft via a tape are provided, and the capstan shaft is driven by a driving force of a driving motor. As a result, the running speed of the tape becomes extremely stable.

According to the fifth and sixth aspects of the present invention, since the driving force transmitting means for rotating the feed shaft via the capstan shaft is provided, the tape is fed by the capstan shaft and the pinch roller. No loss occurs between the amount fed and the amount fed by the tape running belt to which the driving force of the drive motor is transmitted via the feed shaft, or excessive tension is applied to the tape, or
There is no looseness, and the running stability of the tape can be ensured.

According to the present invention, the surface opposite to the recording surface of the tape is brought into contact with the tape running belt, so that the recording surface of the tape is protected. Can be.

Also, the tape recording or reproducing apparatus of the present invention
A driving motor, a rotating drum rotated by the driving motor and having a head, a feed shaft rotated by transmitting the driving force of the driving motor, and a helical scan of the head of the rotating drum along a data track. A tape reel wound around a tape on which recording or reproduction is performed, and a tape running which is fed by rotation of a feed shaft and is pressed against the pair of tape reels via the tape wound around the pair of tape reels. With a belt for
The driving force of the drive motor is transmitted to a tape running belt via a feed shaft so that the tape runs and the pair of tape reels are rotated.

Accordingly, since the running of the tape and the rotation of the rotary drum are properly performed by one drive motor, the number of components and power consumption are reduced, and the manufacturing cost of the tape recording or reproducing apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a video camera to which the present invention has been applied.

FIG. 3 is a schematic plan view showing a second embodiment of the present invention.

FIG. 4 is a schematic plan view showing a tape drive mechanism provided in a conventional video camera.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tape drive mechanism, 3L ... Tape reel, 3R ... Tape reel, 4a ... Rotating drum, 6 ... Pinch roller, 7 ...
Tape, 8: Capstan shaft, 9: Drive motor, 14 ...
Feed shaft, 15... Third belt (driving force transmitting means), 17
... Tape running belt, 1A ... Tape drive mechanism

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Igarashi 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Masaki Okazaki 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F term (reference) 5D081 AA10 CC06 CC14 DD05 DD06

Claims (13)

[Claims] 1. A tape recording or reproducing apparatus for performing recording or reproduction on a tape by a helical scan method, a driving motor, a rotating drum rotated by the driving motor and having a head, and a driving force of the driving motor. Is transmitted and rotated, a pair of tape reels for winding the tape, and pressed by a pair of tape reels via the tape wound by the rotation of the feed shaft and wound on the pair of tape reels. And a driving force of the driving motor is transmitted to the tape running belt via a feed shaft to run the tape and rotate the pair of tape reels. And a tape drive mechanism. 2. The tape drive mechanism according to claim 1, wherein the drive motor is a drum motor for rotating a rotary drum. 3. The apparatus according to claim 1, wherein a capstan shaft and a pinch roller pressed against the capstan shaft via a tape are provided, and the capstan shaft is rotated by a driving force of a driving motor. The tape drive mechanism according to claim 1. 4. The apparatus according to claim 2, further comprising a capstan shaft and a pinch roller pressed against said capstan shaft via a tape, wherein said capstan shaft is rotated by a driving force of a driving motor. The tape drive mechanism according to claim 1. 5. A driving force transmitting means for rotating a feed shaft via a capstan shaft is provided.
The tape drive mechanism according to claim 1. 6. A driving force transmitting means for rotating a feed shaft via a capstan shaft is provided.
The tape drive mechanism according to claim 1. 7. The tape drive mechanism according to claim 1, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 8. The tape drive mechanism according to claim 2, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 9. The tape drive mechanism according to claim 3, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 10. The tape driving mechanism according to claim 4, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 11. The tape driving mechanism according to claim 5, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 12. The tape drive mechanism according to claim 6, wherein the surface of the tape opposite to the recording surface is brought into contact with the tape running belt. 13. A driving motor, a rotating drum rotated by the driving motor and having a head, a feed shaft rotated by transmitting a driving force of the driving motor, and a head of the rotating drum extending along a data track. A pair of tape reels that winds a tape on which recording or reproduction is performed by helical scanning, and a pair of tape reels that are fed by rotation of a feed shaft and wound around the pair of tape reels A tape running belt to be pressed against, and the driving force of the drive motor is transmitted to the tape running belt via a feed shaft so that the tape runs and the pair of tape reels are rotated. A tape recording or reproducing apparatus characterized by the above-mentioned.