JP2000149355A - Tape recording or playback device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the production costs by enabling a part of an internal mechanism to be removable from the other part and reusing it at the time of ending recording or reproducing a tape. SOLUTION: This device is provided with a 1st unit wherein a 1st mechanism 4, which has a head drum 7 and tape guides 8, 8,... and a pair of tape reels 6S, 6T and is also formed by getting the tape 11 through a predetermined tape path, is arranged on a 1st base body 5, and a 2nd unit 2 wherein a 2nd mechanism 21 having a head drum 7 and a driving means for running the tape 11 is arranged on a 2nd base body 22. Here, the 1st unit 1 and the 2nd unit 2 are enabled to be detachable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a tape recording or reproducing apparatus. More specifically, the present invention relates to a technique for reducing a manufacturing cost by making a part of an internal mechanism detachable from another part and reusing it at the end of recording or reproduction on a tape.

[0002]

2. Description of the Related Art In a tape recording or reproducing apparatus capable of recording and / or reproducing a signal on a tape, for example, in a video camera, a head drum, a tape driving mechanism, a loading mechanism, a cassette receiving section, etc. Each mechanism and each part are provided. In such a video camera, the tape is usually pulled out from the case body of the tape cassette received in the cassette receiving portion by the loading mechanism to form a predetermined tape path, and the tape is driven by the tape driving mechanism. At the same time, recording or reproduction of a signal on or from the tape is performed by driving the head drum.

[0003]

However, in the above-described video camera, the tape is drawn from the case body of the tape cassette received in the cassette receiving portion to form a predetermined tape path. And a mechanism for accommodating the tape pulled out at the end of the recording or reproduction of the tape in the case body of the tape cassette, etc., which requires a high manufacturing cost and is generally expensive. It is.

[0004] Therefore, a recyclable video camera which can be provided at a low cost by incorporating a tape in advance and forming a predetermined tape path and reducing the manufacturing cost by reusing a part of the components can be reused. Demands are growing.

SUMMARY OF THE INVENTION The present invention overcomes the above-mentioned problems and aims to reduce the manufacturing cost by reusing and reusing part of an internal mechanism from another part at the end of recording or reproduction on a tape. Make it an issue.

[0006]

According to the present invention, there is provided a tape recording or reproducing apparatus comprising a head drum, a tape guide, and a pair of tape reels, and a tape passing through a predetermined tape path. The first formed
And a second mechanism having driving means for driving the head drum and running the tape is disposed on the second base body. A second unit is provided, and the first unit and the second unit are made detachable.

Therefore, in the tape recording or reproducing apparatus of the present invention, a part of the internal mechanism can be detached from the other part when the recording or the reproduction on the tape is completed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tape recording or reproducing apparatus according to the present invention will be described below with reference to the accompanying drawings.

In the following embodiments, the tape recording or reproducing apparatus of the present invention is applied to a portable video camera. And this video camera is for exclusive use of recording, required members and mechanisms are arranged in an outer casing, and when the recording on the tape is completed, a part of the internal mechanism can be detached from the other parts. It is made reusable.

First, the first embodiment of the present invention will be described with reference to FIGS.
An embodiment will be described.

A tape traveling mechanism 3 in which a first unit 1 and a second unit 2 are connected is provided in an outer casing (not shown) of the video camera (see FIGS. 1 to 3).
Note that the first unit 1 is provided as a disposable unit that is not reused at the end of recording on the tape, and the second unit 2 is provided as a recycle unit that is reused at the end of recording on the tape.

The first unit 1 includes a first mechanism 4 disposed on a first base body 5, and the first mechanism 4 includes a pair of tape reels 6S and 6T, a head drum 7, and a plurality of tape guides 8. , 8,..., Rollers 9L and 9R, and a capstan shaft 10, and a tape 11 is formed by winding these members and passing through a predetermined tape path.

The first base member 5 has a slightly thick plate-like shape, and the first base member 5 has engaging recesses 5a, 5a, Are formed (only the engagement recesses 5a, 5a formed on one side surface are shown in FIG. 1). On the lower surface of the first base body 5, positioning holes 5b, 5b are formed at one end thereof so as to be separated from each other left and right (see FIG. 1).

The pair of tape reels 6S and 6T are rotatably supported by the first base body 5. The tape reel 6S located on the left side is a supply side tape reel for supplying the tape, and the tape reel 6T located on the right side is a take-up side tape reel for winding the tape sent out from the tape reel 6S. It is provided as.

The head drum 7 is formed of a resin material, and has a rotating drum 12 located above and a fixed drum 13 located below the rotating drum 12 (see FIG. 4).

The reason why the head drum 7 is formed of a resin material is to reduce the manufacturing cost of the video camera.

A portion near the upper end of the rotating shaft 14 is fixed to the center hole 12a of the rotating drum 12 by press fitting or the like.
The head 1 is separated from the rotating drum 12 in the circumferential direction.
5, 15, ... are provided. Further, an upper core 16 constituting a rotary transformer described later is fixed to a lower end of the rotary drum 12.

A cylindrical bearing 13a for supporting the rotary shaft 14 is formed at the center of the fixed drum 13, and a center hole 13b is formed as a support hole.

The outer races 17, 17 and bearing spheres 18, 18,... Are arranged vertically apart from each other in the support hole 13b of the bearing portion 13a. And
The rotating shaft 14 is rotatably supported by the support holes 13b via outer races 17, 17 and bearing balls 18, 18,..., And the lower end of the rotating shaft 14 projects downward from the fixed drum 13. Further, a lower core 19 is fixed to the fixed drum 13 in a state of facing the upper core 16 fixed to the rotary drum 12, and the upper core 16 and the lower core 19 constitute a rotary transformer 20.

An arrangement hole 5c is formed in the first base body 5, and the head drum 7 is attached to the first base body 5 by, for example, screws so that the fixed drum 13 covers the arrangement hole 5c. The lower end of the rotating shaft 14 protrudes downward from the first base body 5. The lower end of the bearing 13a of the fixed drum 13 is located in the arrangement hole 5c. In a state where the head drum 7 is attached to the first base body 5, a plurality of contacts (not shown) formed on the lower surface of the first base body 5 and the contacts (not shown) of the head drum 7 are connected. .

The tape guides 8, 8,... Are arranged on the first base body 5 so as to be separated from each other across the head drum 7 (see FIGS. 1 to 3). The tape guides 8, 8,... May be formed separately from the base body 5 and attached to the base body 5, or may be formed integrally with the base body 5. If the tape guides 8, 8,... Are formed integrally with the base body 5, the number of parts can be reduced and the manufacturing cost can be reduced.

The rollers 9L and 9R are rotatably supported by the first base body 5 while being left and right apart from each other with the head drum 7 therebetween, and the roller 9R located on the right side is formed as a pinch roller (FIG. 1). To FIG. 3).

The capstan shaft 10 is rotatably supported by the first base body 5 and has a lower end protruding downward from the first base body (see FIGS. 1 to 3). The capstan shaft 10 is pressed against the roller 9R via the tape 11.

The tape 11 has both ends attached to the tape reels 6S and 6T, respectively, and passes through a predetermined tape path. That is, the tape 11 pulled out from the tape reel 6S is the roller 9L → the tape guides 8 and 8 located on the left side of the head drum 7 → the head drum 7 → the tape guides 8 and 8 located on the right side of the head drum 7 → the roller 9
The tape is sequentially wound around R and reaches the tape reel 6T.

In the state where the tape 11 is wound around each member as described above, the portion of the tape 11 wound around the roller 9R is rotatably supported by the roller 9R and the first base body 5. It is in a state of being sandwiched by the stun shaft 10.

The second unit 2 has a second mechanism 21
The second mechanism 21 has driving means such as a driving motor 23 for driving the head drum 7 and a tape running motor 24 for running the tape 11 (see FIG. 1). 1 and 3). Each component of the second unit 2 has relatively high durability.

The second base body 22 is formed in a flat box shape having the same size as the first base body 5, and an internal space is formed as an arrangement space 25. The second base body 22 is formed, for example, by attaching a plate-shaped member that covers the opening to a box-shaped member that is opened downward.

On the upper surface 22a of the second base body 22,
An insertion hole 22b is formed in a portion of the first base body 5 corresponding to the arrangement hole 5c (see FIG. 4). On the side edge of the upper surface portion 22a of the second base body 22, engagement claws 22c, 22c,... Which engage with the engagement recesses 5a, 5a,.・ ・ Is formed. Further, positioning protrusions 22d, 22d are formed at one end of the upper surface 22a so as to be separated from each other left and right (see FIG. 1).

In the arrangement space 25, a substantially cylindrical first coupling member 26, for example, a pulley is rotatably supported at a portion corresponding to the insertion hole 22b.

The drive motor 23 is arranged in the arrangement space 25, and a first belt 27 is wound between the motor shaft 23a and the first coupling member 26 (FIGS. 1 and 3).
reference). Therefore, when the driving motor 23 is rotated, the driving force is transmitted to the first coupling member 26 via the first belt 27, and the first coupling member 26 is rotated.

A circuit board (not shown) is arranged in the arrangement space 25, and the drive motor 23 is connected to a motor drive circuit 29 via a first circuit pattern 28 formed on the circuit board (see FIG. 1). Further, a recording amplifier 30 is provided on the circuit board, and the recording amplifier 30 is connected to the connection terminals 32, 32 formed on the upper surface of the second base body 22 via the second circuit pattern 31 formed on the circuit board. ...
It is connected to the.

A substantially cylindrical second coupling member 33, for example, a pulley, is rotatably supported on the second base member 22, and the coupling member 33 is connected to the second base member 2.
2 from above.

The second base body 22 includes a reel engaging shaft 34
S, 34T are rotatably supported, and the reel engagement shaft 34
S and 34T respectively protrude upward from the upper surface portion 22a. The reel engaging shaft 34T located on the right side is a support shaft 35 fixed to a pulley member 35 located therebelow.
It is rotatably supported via a. The reel engaging shaft 34T is rotated integrally with the pulley member 35 when a load less than a certain value is applied to the rotation of the reel engaging shaft 34T, and is rotated when the load more than a certain value is applied to the rotation. It is configured to rotate while slipping with respect to the support shaft 35a.

The tape running motor 24 is arranged in the arrangement space 25, and the motor shaft 24a is connected to the second coupling member 3.
The second belt 36 is wound between the second coupling member 33 and the pulley member 35.
(See FIGS. 1 and 3).
Therefore, when the tape running motor 24 is rotated, the driving force is transmitted to the second coupling member 33 via the second belt 36, and the second coupling member 33 is rotated. The driving force of the tape running motor 24 is transmitted from the second coupling member 33 to the pulley member 35 and the reel engaging shaft 34T via the third belt 37, and both of them are rotated.

The first unit 1 and the second unit 2 are connected by positioning projections 22d formed on the second base body 22 and positioning holes 5b formed on the first base body 5. , 5b, the first base body 5 and the second base body 22 are positioned, and the second base bodies are inserted into the engagement recesses 5a, 5a,. 22 are engaged (see FIGS. 1 and 2).

At this time, the reel engaging shafts 34S, 34T of the second unit 2 are, for example, press-fitted into the center holes 6a, 6a of the tape reels 6S, 6T of the first unit 1, respectively. 34S, 34T and the tape reels 6S, 6T are respectively connected. And the first
The lower end of the rotating shaft 14 of the head drum 7 of the unit 1 is inserted through the insertion hole 22b of the second base body 22, and the first coupling member 26 of the second unit 2, for example,
The rotary drum 12 and the first coupling member 26 are connected by press-fitting. Also, the first unit 1
For example, the lower end of the capstan shaft 10 is press-fitted into the second coupling member 33 of the second unit 2, whereby the capstan shaft 10 and the second coupling member 3 are pressed.
3 are combined.

The connection between the above-described members is not limited to press-fitting. For example, a so-called one-way clutch system in which the members are rotatably supported in only one direction or a method using a spline shaft can be adopted. is there.

In the above, the transmission of the driving force to the respective members of the driving motor 23 and the tape running motor 24 is performed by using the belts 27, 36, and 37. May be formed to transmit a driving force from the drive motor 23 and the tape running motor 24 to each member.

When the first unit 1 and the second unit 2 are connected as described above, the connection terminals 32, 32,... It is connected to a plurality of contacts formed on the lower surface of one base body 5 so that signals can be transmitted between the recording amplifier 30 and the head drum 7.

Conversely, the engagement recesses 5a, 5a,... Of the first base body 5 and the engagement claws 22 of the second base body 22
, 22c,... are released, and the reel engaging shafts 34S, 34T and the tape reels 6S, 6T,
The first unit 1 can be removed from the second unit 2 by releasing the coupling state between the rotating shaft 14 and the first coupling member 26 and between the capstan shaft 10 and the second coupling member 33. is there.

When the tape running motor 24 is rotated to rotate the second coupling member 33, the capstan shaft 10 connected to the second coupling member 33 is rotated, and the capstan shaft 10 is rotated. The tape 11 is run at a constant speed by the shaft 10 and the roller 9R. The driving force of the tape running motor 24 is applied to the reel engaging shaft 3.
4T, the tape reel 6T coupled to the reel engaging shaft 34T is rotated, and the tape 11 sent from the tape reel 6S is wound around the tape reel 6T.

At this time, the reel engaging shaft 34T due to a change in the diameter of the tape 11 wound on the tape reel 6T.
The reel engaging shaft 34T is slipped with respect to the support shaft 35a of the pulley member 35 in accordance with the load variation with respect to the tape 11, and the winding of the tape 11 is appropriate in accordance with the winding diameter of the tape 11 which changes every moment. Is to be performed.

When the tape 11 is running, the tape 11 runs with a predetermined tension (back tension) applied thereto. The tension on the tape 11 is controlled by a reel engaging shaft 34S to which the tape reel 6S is connected. Is applied by the friction torque of.

When the tape running motor 24 is rotated,
At the same time, the driving motor 23 is rotated to rotate the rotating drum 12 of the head drum 7, and the heads 15, 15,... Provided on the rotating drum 12 are scanned along the data track of the tape 11 and A signal is recorded.

The signal is recorded on the tape 11 as follows (see FIG. 5).

A video signal output from a CCD (Charge Coupled Device) image pickup device 38 is digitally converted by an A / D converter 39 to be converted into video data, compressed by a video compressor 40 and input to a multiplexer 41. On the other hand, the audio signal output from the stereo microphone 42 is digitally converted by the A / D converter 43 to be audio data and input to the multiplexer 41.

The video data and the audio data are combined into one series of data by the multiplexer 41, and ECC (Error Correcting Code) information required at the time of demodulation is added to E.
The signal is added by the CC formatter 44 and amplified by the recording amplifier 30. The amplified data is recorded on the tape 11 via the heads 15, 15,... Provided on the rotating drum 12.

CCD image sensor 38, A / D converter 3
9, video compressor 40, multiplexer 41,
The stereo microphone 42, the A / D converter 43, the ECC formatter 44, and the recording amplifier 30 are provided as signal processing means 45 for processing a video signal and an audio signal as described above. The video signal and the audio signal are processed in response to the command signal. Further, the drive motor 23 and the tape running motor 24 are rotated via the motor drive circuit 29 based on a command signal sent from the mechanical controller 46a of the system controller 46.

As described above, in the above-mentioned video camera, a pair of tape reels 6S, 6T, a head drum 7, a plurality of tape guides 8, 8,..., Rollers 9L, 9R, and a capstan shaft And a first mechanism 4 in which a tape 11 is wound around each of these members and a predetermined tape path is passed, and the first mechanism 4 is disposed on the first base body 5.
And a second unit 2 in which a second mechanism 21 having a drive motor 23, a tape running motor 24, and the like is disposed on a second base body 22, to form a first unit 1. The unit 1 and the second unit 2 are detachably provided.

Therefore, since the first unit 1 and the second unit 2 can be separated at the end of recording on the tape 11, the second unit 2 having relatively high durability can be obtained.
Can be removed from the first unit 1 and reused, the production unit price for mass production of video cameras can be reduced, and the production cost can be reduced.

Further, since the first unit 1 having a predetermined tape path is formed in advance, there is no need for a loading mechanism for forming the predetermined tape path, thereby reducing the manufacturing cost. To provide an inexpensive recyclable video camera in consideration of manufacturing a recyclable video camera that incorporates a tape in advance, forms a predetermined tape path, and allows some of the components to be reused. Can be.

When the recording on the tape 11 is completed, usually, only the tape 11 of the first unit 1 is removed and the recorded information is recorded and stored on another recording medium. The tape 11 can be reused.

Next, a second embodiment of the tape recording or reproducing apparatus of the present invention will be described with reference to FIG.

The second embodiment described below is different from the first embodiment only in that the rotation of the rotary drum 12 and the running of the tape 11 are performed by one motor. Therefore, in the second embodiment, only different portions from the first embodiment will be described in detail, and other portions will be the same as those in the first embodiment. The same reference numerals are given to the same reference numerals, and the description is omitted.

In the video camera according to the second embodiment, only the drive motor 23 is provided as a motor, and no tape running motor 24 is provided.

A first belt 27 is wound between the motor shaft 23a of the drive motor 23 and the first coupling member 26, and a connecting belt is provided between the motor shaft 23a and the second coupling member 33. 47 are wound. Further, a third belt 37 is wound between the second coupling member 33 and the pulley member 35.

Therefore, when the drive motor 23 is rotated,
The driving force is transmitted to the first coupling member 26 via the first belt 27, and the first coupling member 2
6 is rotated and the driving force of the drive motor 23 is transmitted to the second coupling member 33 via the connection belt 47 so that the cap coupled to the second coupling member 33 is rotated. The stun shaft 10 is rotated. Further, the driving force of the drive motor 23 is transmitted from the second coupling member 33 to the pulley member 35 and the reel engaging shaft 34T via the third belt 37, and both of them are rotated.

As described above, the capstan shaft 10 and the reel engaging shaft 34T are rotated so that the tape 11 travels, and the rotating drum 12 is rotated to perform recording on the tape 11.

At this time, in the same manner as in the video camera according to the first embodiment, in response to the change in the load on the reel engaging shaft 34T due to the change in the diameter of the tape 11 wound on the tape reel 6T, the reel The engagement shaft 34T is slipped with respect to the support shaft 35a of the pulley member 35, and the tape 11 is properly wound. The rotating drum 12
And the rotation speed of the capstan shaft 10 is set to be a predetermined speed by forming the diameter of the first coupling member 26 and the second coupling member 33 to a predetermined size, respectively. ing.

The video camera according to the second embodiment has the same effects as the video camera according to the first embodiment, and the rotation of the rotary drum 12 and the tape 11 Is performed by only one motor, that is, only the drive motor 23, so that the number of parts and power consumption are reduced, and the production cost of the video camera can be further reduced.

FIGS. 7 to 9 show modified examples of the head drum.

First, the head drum 7A shown in FIG. 7 will be described. The head drum 7A is different from the above-described head drum 7 only in that the rotating shaft 14 is supported on the fixed drum 13 via a sliding bearing. 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 similar parts in the head drum 7, and the description thereof will be omitted.

In the head drum 7A, a cylindrical sliding bearing 48 is arranged in a support hole 13b of the bearing 13a of the fixed drum 13 so as to be fitted inside, and the rotating shaft 14 is fitted to the bearing 13a.
8 so as to be rotatable.

An annular support protrusion 49 is formed on the lower surface 22e of the second base body 22 at a position below the insertion hole 22b, and a thrust receiving portion is formed on a portion of the lower surface 22e surrounded by the support protrusion 49. 50 are provided. The thrust receiver 50 is provided because when the rotating shaft 14 is supported via the slide bearing 48, the holding force on the rotating shaft 14 is relatively small, and therefore it is necessary to receive the rotating shaft 14 in the thrust direction. It is.

When the first unit 1 is connected to the second unit 2, the rotation shaft 14 of the head drum 7A
Is the first with the lower surface in contact with the thrust receiver 50.
Is coupled to the coupling member 26.

When the head drum 7A is used,
Since the slide bearings 48 are generally inexpensive, the manufacturing cost of the video camera can be further reduced.

Next, the head drum 7B shown in FIG. 8 will be described. The head drum 7B is different from the above-described head drum 7 only in that the lower end of the rotating shaft 14 is directly coupled to a part of the drive motor 23.
The head drum 7B will be described in detail only for parts different from the head drum 7, and other parts will be denoted by the same reference numerals as those of the same parts in the head drum 7, and description thereof will be omitted. .

The insertion hole 22 b of the second base body 22 is formed in the same size as the arrangement hole 5 c formed in the first base body 5.

The drive motor 23 comprises a stator portion 51 and a rotor portion 52. The stator portion 51 has an annular stator substrate 53 and stator coils 54, 54 arranged on the upper surface of the stator substrate 53 in a circumferential direction.・ It has The stator substrate 53 is attached to the lower surface of the upper surface portion 22a of the second base body 22 so as to cover the insertion hole 22b, and the stator coils 54, 54,.
2b.

The rotor 52 is attached to the lower end of the rotating shaft 14 of the head drum 7B. The rotor section 52 has a bearing member 55, a substantially annular mounting member 56 externally fitted to the bearing member 55, and a magnet 57 mounted on the lower surface of the mounting member 56. The bearing member 55 of the rotor section 52 is attached to the lower end of the rotating shaft 14 of the head drum 7B.

When the head drum 7B is used,
Driving means provided in the second unit 2 for driving the head drum 7B and running the tape 11 include:
In the case of the drive motor 23, the stator portion 51 corresponds to the drive motor 23.

When the first unit 1 is connected to the second unit 2, the bearing members 55 of the rotor 52
Are inserted through the center hole 53a of the stator substrate 53,
The magnet 57 is arranged so as to face the stator coils 53, 53,... With a predetermined gap.

When the head drum 7B is used,
Since the rotating shaft 14 is directly coupled to a part of the drive motor 23, the number of parts is reduced, and the manufacturing cost of the video camera can be further reduced.

Next, the head drum 7C shown in FIG. 9 will be described. The head drum 7C is different from the above-described head drum 7 only in that the fixed drum 13C is formed integrally with the first base body 5. Therefore, the head drum 7C is compared with the head drum 7. 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 similar parts in the head drum 7, and the description thereof will be omitted.

The head drum 7C has a fixed drum 13C,
For example, the first base body 5 is formed integrally with the resin material.

In the head drum 7C, when the first unit 1 and the second unit 2 are connected,
The first coupling member 26 may be provided, and the rotating shaft 14 may be coupled to the first coupling member 26 in the same manner as the head drum 7 and the head drum 7A. 7B, the rotating shaft 14 may be directly coupled to a part of the drive motor 23.

However, if the head drum 7C is used,
Since the first base body 5 and the fixed drum 13 are integrally formed, the manufacturing cost of the video camera can be further reduced.

The above-described video camera is a video camera in which a tape traveling mechanism 3 in which a tape path is formed in advance is built in and some of the components are reusable.
The first unit 1 is provided as a disposable unit and the second unit 2 is provided as a recycle unit. However, if there is a reusable member among the members of the first unit 1, the unit 1 may be reused similarly to the second unit 2. Any of the second units 2 whose durability has been reduced by use may be reused after repairing, for example.

The specific shape and structure of each part shown in each of the above-described embodiments are merely examples of the embodiment of the present invention.
These should not be construed as limiting the technical scope of the present invention.

[0080]

As apparent from the above description, the tape recording or reproducing apparatus of the present invention has a head drum, a tape guide, and a pair of tape reels, and is formed by passing a tape through a predetermined tape path. A first unit having the first mechanism arranged on the first base body, and a second mechanism having driving means for driving the head drum and running the tape on the second base body. And a second unit that is arranged, wherein the first unit and the second unit are detachably provided.

Therefore, since the first unit and the second unit can be separated at the end of recording or reproduction on the tape, it is possible to reuse either the first unit or the second unit. It is possible, and in particular, the production unit price when mass-producing the tape recording or reproducing apparatus is reduced, and the production cost can be reduced.

Further, since the first unit having a predetermined tape path is formed in advance, there is no need for a loading mechanism for forming the predetermined tape path. Considering the manufacture of a recyclable tape recording or reproducing apparatus that incorporates a tape and forms a predetermined tape path to allow a part of the components to be reused, this recycling type tape recording or reproducing apparatus is used. It can be provided at low cost.

According to the second aspect of the invention, since the head drum is formed of a resin material, the manufacturing cost of the tape recording or reproducing apparatus can be further reduced.

According to the third and fourth aspects of the present invention, a driving motor is provided as a driving means, and the driving of the head drum and the running of the tape are performed by one driving motor. Power consumption is reduced,
The manufacturing cost of the tape recording or reproducing device can be further reduced.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a tape recording or reproducing apparatus of the present invention together with FIG. 2 to FIG. 5, which shows a first unit and a second unit of a video camera to which the present invention is applied. FIG. 3 is a schematic perspective view showing the same separately.

FIG. 2 is a schematic perspective view showing a state where a first unit and a second unit are combined.

FIG. 3 is a schematic plan view showing a tape running mechanism.

FIG. 4 is an enlarged vertical sectional view showing a head drum.

FIG. 5 is a block diagram illustrating a configuration of a video camera.

FIG. 6 is a schematic plan view showing a second embodiment of the tape recording or reproducing apparatus of the present invention.

FIG. 7 is an enlarged vertical sectional view showing a modification of the head drum.

FIG. 8 is an enlarged vertical sectional view showing another modified example of the head drum.

FIG. 9 is an enlarged longitudinal sectional view showing still another modified example of the head drum.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st unit, 2 ... 2nd unit, 4 ... 1st mechanism, 5 ... 1st base body, 6S ... Tape reel, 6T
... tape reel, 7 ... head drum, 8 ... tape guide, 11 ... tape, 21 ... second mechanism, 22 ... second base body, 23 ... drive motor, 7A ... head drum, 7B
... Head drum, 7C ... Head drum

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takashi Igarashi 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Noritoshi Eguchi 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation

Claims (4)

[Claims] 1. A first mechanism having a head drum, a tape guide, and a pair of tape reels, wherein a first mechanism formed by passing a tape through a predetermined tape path is disposed on a first base body. A second unit having a second mechanism having a driving mechanism for driving the head drum and running the tape, the second unit being disposed on a second base body; and a first unit and a second unit. A tape recording or reproducing apparatus, wherein a unit is detachably provided. 2. The tape recording or reproducing apparatus according to claim 1, wherein the head drum is formed of a resin material. 3. The tape recording or reproducing apparatus according to claim 1, wherein the driving means has a driving motor, and the driving of the head drum and the running of the tape are performed by one driving motor. 4. The tape recording or reproducing apparatus according to claim 2, wherein the driving means has a driving motor, and the driving of the head drum and the running of the tape are performed by one driving motor.