JPH04271006A - Tape recorder device - Google Patents

Abstract

PURPOSE:To enhance the using freedom of a head cleaner of a rotary head drum in an inexpensive constitution. CONSTITUTION:A brake switch lever 66 of a reel brake mechanism 60 that brakes the reels 50 and 51 which take up a tape 2 in a tape cassette is connected to a cleaning lever 72 of a head cleaner 7O which cleans a rotary head drum 3 via a coupling rod 76. When the rotary drive of the lever 72 carried out by a solenoid 74 is transmitted to the lever 66 via the rod 76, the cleaner 70 cleans the drum 5 while the mechanism 60 brakes both reels 50 and 51.

Description

[Detailed description of the invention]

[Object of the invention]

0002

[Industrial Application Field] The present invention is a compact cassette
tape recorder, VTR (video tape recorder),
The present invention relates to a tape recorder device such as a DAT (digital audio tape recorder).

0003

[Background Art] In recent years, tape recorder devices that record and play back signals using audio/visual video cassettes have become popular, and recently tape recorders that can record and play back digital signals using DAT cassettes have become popular. The device has also been commercialized. In this tape recorder device, the tape in the DAT cassette is pulled out from the DAT cassette by a loading mechanism, wound around a rotating head drum at a predetermined angle, and then signal recording and reproduction are performed.

However, in such a tape recorder device, there is a risk that tape abrasion particles, dust, etc. may adhere to the surface of the rotating head drum, causing clogging of the head or damage to the tape.

[0005] Conventionally, for example, as shown in FIG.
A widely used method is to perform cleaning by bringing a cleaning roller 101 made of urethane foam or the like into rotational contact with the surface of the rotary head drum 100.

[0006]

However, in this method, as shown in FIG. 9, when the tape 102 is loaded and is in contact with the rotary head drum 100, the cleaning roller 101 is moved against the rotary head drum 100. The head cleaner is in a state where it is detached from the surface, and the head cleaner does not operate thereafter until the tape is unloaded (ejected). As a result, the rotary head drum 100 may not be cleaned for a long time, and the head cleaner may not be sufficiently effective.

[0007] Therefore, a method of providing a solenoid or the like as a drive source exclusively for the cleaner has been considered, but this raises the problem of increasing costs and hindering miniaturization.

SUMMARY OF THE INVENTION The present invention is aimed at solving these problems, and it is an object of the present invention to provide a tape recorder device that has an inexpensive configuration, increases the degree of freedom in the use of a head cleaner, and can fully utilize the effects of the head cleaner. It is an object.

[Configuration of the invention]

0010

[Means for Solving the Problems] In order to achieve the above object, the tape recorder device of the first invention includes a rotary head for recording and reproducing signals on a tape housed in a tape cassette, and a A reel that winds the tape, a reel brake that applies braking to this reel, a head cleaner that cleans the rotating head, and a reel brake that cleans the rotating head while the reel brake applies braking to the reel. and a connecting means for interlocking the cleaner.

Further, in order to achieve the above object, the tape recorder device of the second invention has a rotary head for recording and reproducing signals on a tape housed in a tape cassette, and a capstan shaft that is driven to rotate. a pinch roller that runs the tape at a constant speed along a predetermined tape running path; a head cleaner that cleans the rotating head; and a head cleaner that cleans the rotating head between the pinch roller's movement toward and away from the capstan shaft. A coupling means is provided for interlocking the pinch roller and the head cleaner for cleaning.

0012

[Operation] In the tape recorder device of the first invention, the reel brake and the head cleaner are interlocked so that the head cleaner cleans the rotating head while the reel brake applies braking to the reel. That is, cleaning by the head cleaner is performed while the reel is rotating due to inertia as the reel brake applies braking to the reel.

Therefore, according to the present invention, it is possible to frequently clean the rotary head in parallel with the operation of the reel brake, and the head cleaner can be used efficiently. Further, according to the present invention, the drive source for either the head cleaner or the reel brake can be shared, which also contributes to cost reduction.

Further, in the tape recorder device of the second invention, the rotary head is cleaned by the head cleaner while the pinch roller moves toward and away from the capstan shaft.

[0015] Therefore, in this invention, as in the first invention, the degree of freedom in using the head cleaner is improved without requiring a dedicated drive source, and it becomes possible to fully utilize the effects of the head cleaner. .

[0016]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view for explaining the configuration of a tape recorder device according to an embodiment of the present invention.

In these figures, 1 indicates the main chassis. On this main chassis 1, there is a rotary head drum 3 for recording and reproducing digital signals on a tape 2 housed in a DAT cassette (not shown), a capstan shaft 4, and two guide rollers 5A. ,5B
, the tape 2 is transferred from the DAT cassette to the rotating head drum 3.
The tape 2 is pulled out to a position where it comes into contact with the circumferential surface of the tape 2 at a predetermined angle and length, and a loading mechanism equipped with a group of various rollers that maintains the running path of the tape 2 thereafter is supported.

The loading mechanism is roughly divided into first and second movable mechanical sections, and a control mechanism section that controls each of these movable mechanical sections.

The first movable mechanical section has a pinch roller 6 attached to the capstan shaft 4 at one end, and a pinch roller support lever 8 rotatable about a shaft 7 fixed to the main chassis 1; A pinch roller press lever 10 is rotatable about a shaft 7 and applies pressurization in the direction of arrow A1 to the pinch roller support lever 8 by the force of a coil spring (not shown), and a guide roller 11 is provided at one end. It also includes a guide roller support lever 13 that rotates around a shaft 12 fixed to the main chassis 1 as the pinch roller support lever 8 rotates.

In this first movable mechanical section, a guide shaft 10a is attached to one end of the pinch roller pressurizing lever 10.
is fixed. The guide shaft 10a engages with a cam groove 22a of a control slider 22 that is supported on a mechanical chassis (not shown) so as to be slidable in the directions of arrows B1 and B2. As a result, the pinch roller pressurizing lever 10 is rotated about the shaft 7 by movement of the control slider 22.

The second movable mechanical section includes a pair of loading gears 31A that mesh with each other on the back side of the main chassis 1.
, 31B at one end thereof, and are slidable along guide grooves 1A, 1B provided in the main chassis 1, and have guide rollers 33A, 33B and an inclined guide pin on the surface. Slide base 3 equipped with 34A and 34B
5A, 35B, and loading links 36A, 36B that respectively connect loading arms 32A, 32B and slide bases 35A, 35B.

[0022] Also, the pair of loading gears 31A
, 31B, a gear of a loading lever 42 rotatably supported on a mechanical chassis (not shown) about a shaft 41 is meshed with one (31B) of the loading lever 42, as shown in FIG. The loading lever 42 and the control slider 22 are connected to a mode switching cam 4 rotatably supported on a mechanical chassis (not shown) about a shaft 43.
4 to rotate and slide, respectively.

That is, the mode switching cam 44 is provided with cam grooves 44a and 44b corresponding to the loading lever 42 and the control slider 22, respectively. Each guide shaft 42a, 22b is engaged with each other.

With the above configuration, the first movable portion operates through the sliding movement of the control slider 22, and the pinch roller 6 on the pinch roller support lever 8 moves to a position where it is pressed against the capstan shaft 4. At the same time, the second movable part operates through the rotation of the loading lever 42, and the slide bases 35A and 35B slide toward the rotating head drum 3 along the guide grooves 1A and 1B provided in the main chassis 1. . As a result, the tape 2 is wound around the circumferential surface of the rotary head drum 3 at a predetermined angle and length, making it possible to record and reproduce signals.

The mode switching cam 44 is rotatably driven by a motor (not shown) through driving force transmission means (not shown) such as a connecting gear or a worm gear.

Furthermore, although not shown, a reel motor base on which two reel motors are mounted is fixed between the main chassis 1 and a mechanical chassis (not shown). Each reel motor has a tape supply reel 50 and a tape take-up reel 5 connected to each other via a reel rotation support shaft.
1 is installed.

Further, 60 is a reel brake mechanism for applying braking force to each reel 50, 51. This reel brake mechanism 60 includes reel brake arms 63 and 64, each having rubber pads 61 and 62 at one end thereof, which come into contact with the circumferential surface of the reel stand of each reel 50 and 51, and rubber pads 61 and 62 placed evenly on each reel stand. A brake spring 65 for applying a biasing force to each reel brake arm 63, 64 to press the reel with a strong force, and a brake spring 65 for turning on/off the supply of braking force to each reel 50, 51 by this reel brake mechanism 60.
It consists of a brake switching lever 66 that switches the brake off. Note that 67 and 68 are shafts that rotatably support the reel brake arms 63 and 64, respectively, and 69 is a shaft that rotatably supports the brake switching lever 66 in the directions of arrows D1 and D2.

Further, 70 indicates a head cleaner for cleaning the rotary head drum 3. The head cleaner 70 is constructed by holding a cleaning roller 71 made of urethane foam or the like in rotational contact with the circumferential surface of the rotary head drum 3 at one end of a cleaning lever 72 so as to be rotatable. The cleaning lever 72 is rotatable around a shaft 73, and is driven within a predetermined rotation angle in the directions of arrows E1 and E2 by turning a solenoid 74 on and off. Further, the cleaning lever 72 is connected to the shaft 7.
Due to the coil spring 75 wound around 3, the arrow E is always
2 rotational direction.

The cleaning lever 72 and the brake switching lever 66 described above are connected by a connecting rod 76, so that the reel brake mechanism is connected to each reel 5.
0 and 51, the cleaning roller 71
The rotary head drum 3 is configured to be at a rotational position where it comes into contact with the surface of the rotary head drum 3.

Reference numeral 80 denotes a tension detection arm for detecting the tension of the tape 2 on the tape running path when recording/reproducing signals on the tape 2. This tension detection arm 80 is attached to the main chassis 1
It is rotatably supported by a rotating shaft 81 supported by. A tension pole 82 that is in pressure contact with the surface of the tape 2 is rotatably supported at one end of the tension detection arm 81. On the other hand, a tension spring 83 having one end fixed to the other end of the tension detection arm 80
The other end is locked, so that the tension detection arm 80 is always urged in the direction of arrow C1 with a constant force.

The tension detection arm 80 is turned on and off by a control pin 23 protruding from the control slider 22.

Next, the operation of this tape recorder device will be explained. First, when the DAT cassette is installed in the tape recorder device, each slide base 35A, 35B
The upper guide rollers 33A, 33B and the inclined guide pins 34A, 34B, the pinch roller 6, and the guide roller 11 are all located in the loading mechanism insertion opening in the DAT cassette.

Thereafter, when the mode switching cam 44 is rotated by the drive of a motor (not shown), the loading lever 42 rotates and each loading gear 31A, 31B rotates while meshing with each other, so that the rotational force is Slide base 35A through loading arms 32A, 32B and each loading link 36A, 36B,
35B, and as a result, the slide base 35A,
35B is a guide groove 1A provided in the main chassis 1.
, 1B toward the rotating head drum 3.

Further, in parallel with this operation, the control slider 22 moves in the direction of arrow B1 due to the rotation of the mode switching cam 44, and as a result, the pinch roller support lever 8 moves in the direction of arrow A.
Rotating in one direction, the pinch roller 6 is brought into pressure contact with the capstan shaft 4 with the tape 2 in between.

With this, the tape 2 is transferred to the rotating head drum 3.
It is wrapped around the circumferential surface at a predetermined angle and length, and
The running path of the tape 2 is from the tape supply reel 50 side,
Formed by guide roller 5B, guide roller 33B and inclined guide pin 34B on slide base 35B, inclined guide pin 33A and guide roller 34A on slide base 35A, guide roller 5A, capstan shaft 4, pinch roller 6, and guide roller 11. be done.

Further, as the control slider 22 moves in the direction of arrow B1, the tension detection arm 80 rotates in the direction of arrow C1, and as a result, the tension pole 82 on the tension detection arm 80 is pressed against the surface of the tape 2, and tension is applied. The servo function starts operating.

Thereafter, by rotating the tape supply reel 50, the tape take-up reel 51, and the capstan shaft 4, the tape starts running at a constant speed, and signals are recorded and reproduced on the tape 2. In addition,
During this time, the tension of the tape 2 is detected by the tension detection arm 80, and a braking force corresponding to the detected tension is applied to the tape supply reel 50, thereby performing servo control of the tape tension.

Next, the operations of the head cleaner 70 and the reel brake mechanism 60, which are features of this tape recorder device, will be explained with reference to FIGS. 1, 3, and 4.

FIGS. 1 and 3 show the states of the tape 2 during signal recording/reproduction and tape fast forward/reverse, respectively. As shown in these figures, during this time, the solenoid 74 is turned on, the cleaning lever 72 is rotated by a predetermined angle in the direction of arrow E1 against the urging force of the coil spring 75, and the cleaning roller 71 is rotated by the rotating head drum 3. Keep it away from the surrounding surface.

The rotation of the cleaning lever 72 is also transmitted to the brake switching lever 66 through the connecting rod 76. As a result, the brake switching lever 66 is moved to the shaft 69.
The rubber pads 61 and 62 of the reel brake arms 63 and 64 are also separated from the peripheral surface of the reel stand of each reel 50 and 51, respectively.

FIG. 4 also shows the signal recording/recording of FIGS. 1 and 3.
It shows the playback state, the stop state from the tape fast forward/reverse state, and the standby state after tape loading. As shown in the figure, at this time, the solenoid 74 is turned off, and the cleaning lever 72 is rotated in the direction of arrow E2 due to the urging force of the coil spring 75, so that the cleaning roller 71 comes into contact with the circumferential surface of the rotating head drum 3. . As a result, the head cleaner 70 rotates the head drum 3.
cleaning will begin.

At the same time, the rotation of the cleaning lever 72 is transmitted to the brake switching lever 66 through the connecting rod 76. As a result, the brake switching lever 66 is
The rubber pads 61 and 62 of each reel brake arm 63 and 64 come into contact with the circumferential surface of the reel stand of each reel 50 and 51, respectively. This applies braking force to each reel 50, 51.

Therefore, cleaning of the rotary head drum 3 by the head cleaner 70 is performed while the reels 50 and 51 are rotating due to inertia by the reel brake mechanism 60 applying braking to each reel 50 and 51.

Thus, according to the tape recorder device of this embodiment, one solenoid 74 is connected to the head cleaner 70.
The reel brake mechanism 60 provides braking force to each reel 50, 51, and the head cleaner 70 provides a rotating head drum 3.
By cleaning the rotary head drum 3 at the same time, it is possible to clean the rotary head drum 3 with a relatively high degree of freedom even after tape loading, and the head cleaner 70 can be used efficiently.

Further, in this embodiment, cost can be reduced by using one solenoid 74 as a driving source for the head cleaner 70 and the reel brake mechanism 60.

Note that in this embodiment, the head cleaner 70
Although the solenoid 74 is directly connected to the side, it is also possible to connect the solenoid directly to the reel brake mechanism 60 side.

Next, another embodiment of the present invention will be described. Figure 5
7 to 7 are plan views showing the overall configuration of a tape recorder device according to another embodiment. In each figure, the same parts as in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In the tape recorder device of this embodiment, the head cleaner 70 is
It is characterized in that it is linked with the movement of the pinch roller 6 towards and away from the capstan shaft 4.

FIG. 5 is an enlarged plan view of a part of the apparatus of this embodiment. As shown in the figure, the end of the pinch roller support lever 8 that supports the pinch roller 6 engages with a hook portion 72a provided at the end of the cleaning lever 72, causing the cleaning lever 72 to rotate. An engagement guide portion 90 is provided for guiding. This engagement guide part 90
has a planar shape in which two protrusions 91 and 92 are connected along a rotation path centered on the shaft 7 of the pinch roller support lever 8.

FIG. 6 shows the state of this tape recorder device during tape fast forward/reverse. At this time,
The pinch roller 6 is in a state separated from the capstan shaft 4, and the hook portion 72a of the cleaning lever 72 is engaged with one convex portion 91 of the engagement guide portion 90 of the pinch roller support lever 8, and the hook portion 72a of the cleaning lever 72 is engaged with one convex portion 91 of the engagement guide portion 90 of the pinch roller support lever 8. The cleaning roller 71 is in the position shown in the figure against the biasing force.
is fixed at a position apart from the circumferential surface of the rotating head drum 3.

FIG. 7, together with FIG. 5, shows the state during signal recording/reproduction on the tape 2. At this time, the pinch roller 6 is rotated to a position where it is pressed against the capstan shaft 4 with the tape 2 in between, but the cleaning lever 72
The hook portion 72a is now locked by the other convex portion 92 of the engagement guide portion 90, and the cleaning roller 71 is in a position away from the circumferential surface of the rotary head drum 3, as in the case of fast forwarding/reversing the tape. Fixed.

However, between the states shown in FIG. 6 and FIG. Because it is released from the locked state by
The cleaning lever 72 is rotated by the biasing force of the coil spring 75 until the cleaning roller 71 comes into contact with the circumferential surface of the rotary head drum 3 .

As a result, the head cleaner 70 cleans the rotary head drum 3 while the rotary head drum 3 is rotating by inertia. In this way, cleaning can be performed while the rotary head drum 3 is rotating due to inertia.
This is important in preventing unnecessary loads from being applied to the rotating head drum 3.

Thus, according to the tape recorder device of this embodiment, as in the previous embodiment, it is possible to clean the rotary head drum 3 with a high degree of freedom, and it is possible to improve the utilization efficiency of the head cleaner 70. .

In the above embodiments, a tape recorder using a DAT cassette has been described, but the present invention can also be applied to a tape recorder using a videotape.

[0055]

[Effects of the Invention] As explained above, according to the tape recorder device of the present invention, the degree of freedom in using the head cleaner can be increased with an inexpensive configuration, and as a result, the effect of the head cleaner can be fully exhibited. becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a state during signal recording/reproduction in a tape recorder device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a part of FIG. 1;

FIG. 3 is a plan view showing the state of the tape recorder device of FIG. 1 during tape fast forward/reverse.

4 is a plan view showing the tape recorder device of FIG. 1 during a reel stop operation and during standby after tape loading; FIG.

FIG. 5 is an enlarged plan view illustrating the configuration of characteristic parts of a tape recorder device according to another embodiment of the present invention.

6 is a plan view showing the state of the tape recorder device of FIG. 5 during tape fast forward/reverse; FIG.

[Fig. 7] Signal recording in the tape recorder device of Fig. 5/
FIG. 3 is a plan view showing a state during reproduction.

FIG. 8 is a plan view showing a state in which a head cleaner is in contact with a rotating head drum in a conventional tape recorder device.

9 is a plan view showing a state in which the head cleaner is separated from the rotating head drum in the tape recorder device of FIG. 8; FIG.

[Explanation of symbols]

2...Tape 3...Rotating head drum 6...Pinch roller 8...Pinch roller support lever 50...Tape supply reel 51...Tape take-up reel 60...Reel brake mechanism 61, 62...Rubber pad 63, 64...Reel brake arm 65...brake spring 66...Brake switching lever 70...Head cleaner 71...Cleaning roller 72...Cleaning lever 74... Solenoid 76...Connecting rod 90...Engagement guide part 91, 91...Protrusion

Claims (2)

[Claims] 1. A rotary head for recording and reproducing signals on a tape stored in a tape cassette, a reel for winding the tape in the tape cassette, a reel brake for braking the reel, and the rotary head. and a connecting means for interlocking the reel brake and the head cleaner so that the head cleaner cleans the rotating head while the reel brake applies braking to the reel. A tape recorder device featuring: [Claim 2] A rotary head for recording and reproducing signals on and from a tape stored in a tape cassette, and a rotating head for running the tape at a constant speed along a predetermined tape running path while being in pressure contact with a rotationally driven capstan shaft. a pinch roller; a head cleaner for cleaning the rotating head; and a head cleaner for cleaning the rotating head during the movement of the pinch roller toward and away from the capstan shaft. 1. A tape recorder device comprising a connecting means for interlocking the tape recorder device.