JPH04247355A - Tape recorder - Google Patents

Abstract

PURPOSE:To stabilize the feed of a magnetic tape when it is fed at high speed. CONSTITUTION:Both first and second tape guides 26, 27 arranged at the outside of two pinch rollers 5, 6 conforming to two capstans 30, 31 and which guide the magnetic tape 3 are comprised so that they can be located at a position where the slidable contact and the guide in a width direction of a magnetic tape 3 plane are performed when the magnetic tape 3 is fed at high speed by separating the two pinch rollers 5, 6 from the capstans 30, 31.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder capable of stabilizing tape running, particularly during fast forwarding and rewinding.

0002

2. Description of the Related Art In a double capstan type tape recorder of the reverse type, it is necessary to accurately maintain the running position of the magnetic tape at a predetermined position during reciprocation. In order to regulate the running position of the magnetic tape, a tape guide device is installed within the tape running path, but it is effective to arrange the tape guide outside the tape supply side pinch roller, which is the tape entrance side. . Therefore, in the reverse system using double capstan drive, it is necessary to arrange tape guides on the outsides of the two pinch rollers.

In order to effectively regulate the position of the tape, for example, Japanese Utility Model Publication No. 2-29552 is disclosed.

0004

However, in the method disclosed in Utility Model Publication No. 2-29552, the tape guide is brought into sliding contact with the magnetic tape only during playback, and the tape guide is in sliding contact with the magnetic tape during fast forwarding or rewinding. It is separated from the magnetic tape. Therefore, when the winding state of the magnetic tape becomes unstable or when detecting a signal on the magnetic tape during fast forwarding or rewinding, there is a problem that the positional deviation between the magnetic head and the magnetic tape tends to occur.

The present invention has been made in view of the above-mentioned problems, and provides a tape recorder in which the tape guide remains in sliding contact with the magnetic tape even during fast forwarding and rewinding, thereby stabilizing tape running. is intended to provide.

Another object of the present invention is to provide a tape recorder that can further stabilize tape running even during playback.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the tape recorder of the present invention has first and second pinch rollers arranged outside two pinch rollers corresponding to two capstans to guide a magnetic tape. When the magnetic tape runs at the first or second constant speed, the second tape guide is controlled by the control means to:
The second or first tape guide on the upstream side is in sliding contact with the magnetic tape surface and guided in the width direction, and the first or second tape guide on the downstream side is at least in sliding contact with the magnetic tape surface. When the other two pinch rollers are separated from the capstan and the magnetic tape is run at high speed, the first and second tape guides are set in the retracted position where they are released from the capstan. It is configured to serve as a position for providing direction guidance.

Further, in the tape recorder of the present invention, tape guide portions are provided inside the two pinch rollers and are integrally formed with the pinch roller arms that hold the pinch rollers, and the tape guide portions are connected to the pinch rollers. It is constructed so that it makes sliding contact with at least the surface of the magnetic tape when it is pressed onto the capstan.

[0009]

[Function] In the tape recorder of the present invention, when the control means moves the two pinch rollers away from the capstan to run the magnetic tape at high speed, the tape recorder moves both tape guides to the surface of the magnetic tape. Since the tape is configured to be in a position where it slides into contact and guides in the width direction, it is possible to stabilize the running of the tape during such high-speed running.

[0010] Furthermore, since the tape guide section formed inside the pinch roller is in sliding contact with at least the surface of the magnetic tape while the pinch roller is pressed against the capstan and guides the magnetic tape, playback, etc. This means that the tape can be run stably even when running at a constant speed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The tape recorder of the present invention will be explained below based on the embodiments shown in the accompanying drawings.

FIG. 1 is a plan view showing the main parts, FIG. 2 is a rear view showing the tape cassette as viewed from the rear direction, and FIG. 3 is the same as FIG. 1.
In the main part drawings, (a) is a drawing showing the normal rotation, (b) is a drawing showing the reversal, FIG. 4 is an enlarged plan view of the second tape guide and its control means, and FIG. 5 (a) is a drawing showing the stopped state. (B) is a plan view showing the state of the magnetic head, etc. in FIG. (a) is a plan view showing the state of the magnetic head, etc. in reverse playback or recording state,
8(B) is a side view showing the arrangement relationship of the control means and the like at the cassette loading position, and (B) is a similar drawing of the cassette loading/unloading position.

In the figure, reference numeral 1 denotes an upper substrate, and a magnetic tape 3 of a tape cassette 2 is connected to a pair of reel hubs 2a, 2b.
An opening (not shown) is provided along the storage part 2c that stores the wound part (not shown) wound on the holder, and into which the magnetic head 4 and the first and second pinch rollers 5 and 6 are inserted. A notch 1a is formed that escapes the insertion portion 2d, which is thicker than the storage portion 2c.

Reference numeral 7 denotes a lower substrate, which is constructed along the insertion portion 2d, and is attached to the upper substrate 1 by struts and a plurality of screws (not shown) so as to maintain a predetermined gap from the upper substrate 1. Fixed. Reference numerals 8 and 9 denote first and second cassette holder support stands, which are fixed to the above-described upper substrate 1 and rotatably support the holder main body 10 by shaft portions 8a (9a), as shown in FIG. ing. This holder main body 10 is fixed at both ends with screws (not shown),
It has first and second cassette holders 11 and 12 that house the tape cassette 2.

The first and second pinch rollers 5 and 6 are as follows:
First and second pinch roller arms 15 and 1 are rotatably fitted onto the first and second pinch roller arm shafts 13 and 14, respectively, which are erected on the holder main body 10.
It is rotatably provided on shafts 17 and 18 of 6.

Reference numerals 19 and 20 indicate first and second pinch roller springs, and the first and second pinch roller arms 15,
16, and the first pinch roller spring 19 has one end 19a connected to the protrusion 1 of the first pinch roller arm 15.
5a, and the other end 19b is connected to the protrusion 10a of the holder main body 10.
1 and biases the first pinch roller arm 15 in the clockwise direction in FIG. On the other hand, the second pinch roller spring 20 has one end 20a provided on a protrusion 16a of the second pinch roller arm 16, and the other end 20b provided on a proximal shaft support 21a of a head holding member 21, which will be described later.
1b, the second pinch roller arm 16 is shown in FIG.
At the same time, the head holding member 21 is urged in a clockwise direction around the base end shaft support 21a in FIG.

Reference numeral 21 denotes an arm-shaped head holding member with a magnetic head 4 installed near its tip, and its base end shaft support 21a is externally fitted onto a shaft provided on the holder body 10 so as to be freely rotatable. On the other hand, the tip 21c is guided by a guide member 22 provided on the holder main body 10 in a pinched manner. 23
is a head mounting member installed near the tip of the head holding member 21, to which the magnetic head 4 is mounted. Note that 24 and 25 are first and second tape guides provided on both sides of the magnetic head 4.

Reference numerals 26 and 27 are first and second tape guides, which are connected to the first and second pinch roller arm shafts 13 and 1.
The first and second pinch roller springs 15 and 16 are fitted onto the springs 4 so as to be rotatable and sandwich the first and second pinch roller arms 15 and 16, respectively.
The first and second tape guide springs 28 and 29, which are fitted onto the second pinch roller arms 15 and 16,
The second tape guide 26 is biased clockwise in FIG. 1, and the second tape guide 27 is biased counterclockwise in FIG. the first and second tape guides 26;
Similar to the conventional tape guide, the configuration of 27 includes a pair of upper and lower protrusions 26a and 27a that contact both edges of the magnetic tape 3 in the width direction to regulate the magnetic tape 3 to a running position at a predetermined height, and one surface of the magnetic tape 3. Curved surface portions 26b, 27b that slide and guide
have.

Reference numerals 30 and 31 denote first and second capstans, which integrally include first and second flywheels 32 and 33. Note that these first and second capstans 3
0 and 31 are rotatably installed on bearings fixed to the lower substrate 7, although not shown.

34 and 35 are first and second pinch rollers 5
. It is supposed to move. This control shaft 34
, 35 are the first and second pinch roller arms 15,
16 to control the first and second pinch rollers 5 and 6 to be brought into pressure contact with and away from the first and second capstans 30 and 31, and the tape When the cassette 2 is in the state shown in FIGS. 8A and 8B, the first and second pinch roller arms 15,
16 does not come into contact with the inner wall 10a of the holder main body 10, and the first and second pinch rollers 5 and 6 are
The first capstan 30, 31 should be
, the control section 15b of the second pinch roller arms 15, 16
, 16b are formed.

Furthermore, by the movement of the control shafts 34 and 35, the first tape guide 26 is moved as shown in FIG.
The control shaft 3 is attached to the control section formed at the tip of the arm section 26c.
As shown in FIG. 3B, the control shaft 35 comes into contact with a control section formed at the tip of the arm section 27c of the second tape guide 27. Then, the tape guides 26 and 27 on the abutted side are in a retracted position from the magnetic tape 3, and the protrusions 26a and 27a and the curved portions 26b and 27b are separated from the magnetic tape 3. Note that after the power is accidentally turned off while the control shafts 34 and 35 are in contact with the arm portions 26c and 27c of the first and second tape guides 26 and 27, and the state shown in FIG. , even if the state is returned to (a) in Figure 8, the tape guide 2
There are no problems such as 6 or 27 running over the control means.

As shown in FIG. 5, the control rod 36 to which the control shafts 34 and 35 are fixed has an elongated hole 36a fitted into a shaft 7a protruding from the lower substrate 7, as shown by the arrow A. It can be slid in any direction. The control rod 36 is moved by a moving means 41, and the state shown in FIG.
The movement is controlled to the forward playback (or recording) position shown in FIG. 7 or to the reverse playback (or recording) position shown in FIG. By the movement of the control rod 36, the first and second pinch roller arms 15, 16 and the first and second tape guides 26,
27 is performed, and the pinch rollers 5 and 6 press or release the magnetic tape 3, and the protrusions 26a and 27a and the curved portions 26b and 27b guide the tape 3 in sliding contact or separate it. .

Reference numeral 37 denotes an operating shaft for moving the magnetic head 4 forward and backward, which is fixed to the control rod 36 and moves in the direction A in FIG. 5 as the control rod 36 slides. This operating shaft 37 is connected to the head holding member 21.
The playback position is such that the magnetic head 4 installed near the tip of the head holding member 21 is in deep contact with the magnetic tape 3, depending on the positional relationship.
It is moved to a stop position and a high-speed running position with shallow contact.

That is, the operating portion 2 of the head holding member 21
1d has a central concave portion and both side convex portions, and the second
is always biased in the direction of the operating shaft 37 by the pinch roller spring 20, and in the stop position (and high-speed running position) shown in FIG. is in a retracted position in shallow contact with the magnetic tape 3. In addition, the operating shaft 37 rotates normally for playback (or recording).
When moving in the direction, as shown in Fig. 6 and Fig. 3 (a),
One convex part of the actuating part 21d rides on the actuating shaft 37,
Head holding member 2 in which the operating portion 21d is integrally provided
1 rotates to bring the magnetic head 4 into deep contact with the magnetic tape 3. On the other hand, when the operating shaft 37 is moved in the reverse playback (or recording) direction, the magnetic head 4 is brought into deep contact with the magnetic tape 3, as shown in FIGS. 7 and 3(b). There is.

38 is a relay lever, which is connected to the shaft 3 of the lower board 7.
One end 38a is engaged with the shaft 40 of the control rod 36, and the other end 38b is engaged with a bent portion of a play bar (not shown), so that the magnetic tape 3 can be rotated in the normal or reverse direction. A switching operation is performed to rotate first and second reel stands (not shown) depending on the playback state.

The control rod 36 is moved by a moving means 41.
Do it with These are performed using well-known methods and will not be described in detail here.

Next, the operation of the tape recorder constructed as described above will be explained. First, a description will be given of constant speed running such as regeneration in the normal rotation direction shown in FIG. 3(a). In this state, the second control shaft 35 fixed to the control rod 36 comes into contact with the control part 16b of the second pinch roller arm 16 when the regeneration operation is performed in the normal rotation direction from the stopped state in FIG. ,
The first control shaft 34 comes into contact with a control section formed at the tip of the arm section 26c of the first tape guide 26, and causes the second tape guide 27 to come into sliding contact with the three surfaces of the magnetic tape and guide it in the width direction. the position and finishing position, and the first tape guide 26
is a retracted position in which at least the curved surface portion 26b is released from sliding contact with the surface of the magnetic tape 3. In addition, in this case, the control section at the tip of the arm section 26c of the first tape guide 26 is engaged with the first control shaft 34, and in this state, for example, a malfunction may occur, resulting in the state shown in FIG. 8(B). Even if the state shown in FIG. 8(a) is restored after this is achieved, troubles such as the first tape guide 26 riding on the control means will not occur. Further, in this state, the tape guide 15c of the first pinch roller arm 15 slides into contact with the magnetic tape 3 surface and guides it in the width direction by means of its curved surface and projections provided on both sides of the curved surface, and guides the tape in the width direction. Roller arm 16
The tape guide 16c is in a retracted position where it is guided at least in the width direction by projections provided on both sides of its curved surface.

Next, a description will be given of constant speed running such as regeneration in the reverse direction as shown in FIG. 3(B). In this state, when the regeneration operation is performed in the reverse direction from the stopped state in FIG. The second control shaft 35 is in contact with a control section formed at the tip of the arm section 27c of the second tape guide 27, and is used to guide the magnetic tape 3 by the tape guide, release it from the surface of the magnetic tape 3, and , the operations and positions of the tape guides 15c, 16c of the second pinch roller arms 15, 16 are exactly the same as in the normal rotation direction, except that they are reversed.

Next, the actuating shaft 37 fixed to the control rod 36 faces the central recess of the actuating portion 21d of the head holding member 21, and moves the first and second pinch rollers 5 and 6 to the first and second pinch rollers 5 and 6. The first and second tape guides are separated from the capstans 30 and 31 of the magnetic tape 3 and the magnetic head 4 is brought into shallow contact with the magnetic tape 3 during high-speed running such as fast forwarding or rewinding. Both of the magnetic tapes 26 and 27 are at positions where the three surfaces of the magnetic tape slide and are guided in the width direction by their curved surfaces 26b, 27b and projections 26a, 27a. In this state, the tape guides 15c and 16c of the first and second pinch roller arms 15 and 16 are
is a position where the magnetic tape 3 is guided at least in the width direction by the protrusions provided on both sides of the curved surface. Therefore, the running of the magnetic tape 3 is stable even during such high-speed running, and the tape remains stable during high-speed running. Position detection operations are also stable.

Note that in the embodiment shown in FIG. 3, the retracted position where the sliding contact with the three sides of the magnetic tape is released and the restriction in the tape width direction is also released; Of course, by increasing the height of the protrusions 26a, 27a of the guides 26, 27, the tape width direction may be regulated even when sliding contact with the magnetic tape 3 surface is released.

As described above, according to this embodiment, the first and second tape guides 26 and 27 that regulate and guide the running of the magnetic tape 3 are arranged so that the width of the magnetic tape 3 is maintained even when the magnetic tape 3 is running at high speed. Since the magnetic tape 3 is configured to perform direction guidance and sliding contact on the tape surface, the running of the magnetic tape 3 during high-speed running is stabilized.

Furthermore, in this embodiment, the control portion formed at the tip of the arm portion 26c or 27c of the first or second tape guide 26 or 27 and the first or second control shaft 34 or 35 are Even when the tape cassette is installed or removed, it remains engaged, so even if you accidentally turn off the power during playback, set the tape cassette to the installation/detachment position, and then return it to the tape running position, the first or second tape guide will not work. 26 or 27 will not run over the control means.

[0033] Also, the first and second tape guides 26,
27 together with the first and second pinch roller arms 15,
16 tape guides 15c and 16c are arranged such that the guide on the side that presses against the capstans 30 and 31 during constant speed running in forward and reverse rotation is in a position to slide the three surfaces of the magnetic tape and guide it in the width direction, and Since the guide on the moving side is configured to guide at least in the width direction, constant speed running is stabilized. Further, even during high-speed running, since the magnetic tape 3 is guided at least in the width direction, running is stabilized. In particular, the magnetic head 4 is connected to the magnetic tape 3.
The detection operation is stable when detecting the position of the tape by making shallow contact with the tape.

[0034]

As described above, the present invention allows the control means to control the first and second tape guides that are arranged outside the two pinch rollers corresponding to the two capstans and guide the magnetic tape. When the magnetic tape runs at the first or second constant speed, the second or first tape guide on the upstream side is in sliding contact with the magnetic tape surface and guided in the width direction, and the second or first tape guide on the downstream side is in sliding contact with the magnetic tape surface and guided in the width direction. The first or second tape guide is at least in the retracted position where it is out of sliding contact with the magnetic tape surface, and when the two pinch rollers are separated from the capstan to run the magnetic tape at high speed, the first or second tape guide Second
Since both of the tape guides are configured to be in sliding contact with the magnetic tape surface and to guide the magnetic tape in the width direction, stable running of the magnetic tape is possible even when the magnetic tape is running at high speed.

[0035] Furthermore, since the tape guide portion formed inside the pinch roller is in sliding contact with at least the magnetic tape surface while the pinch roller is pressed against the capstan, and guides the magnetic tape, playback, etc. It is possible to stabilize the tape running even when running at a constant speed.

[Brief explanation of the drawing]

[Figure 1] Plan view showing normal rotation recording state

[Figure 2] Rear view showing the tape cassette as seen from the rear direction

[Figure 3] Drawings of the main parts of Figure 1, (A) shows the normal rotation, and (B) shows the reverse rotation.

[Fig. 4] Enlarged plan view of the second tape guide and its control means.

[Figure 5] (A) is a plan view showing the state of the magnetic head, etc. in a stopped state (B) is a view taken in the direction of the arrow in Figure A

[Figure 6] (A) is a plan view showing the state of the magnetic head, etc. in normal rotation playback or recording mode (B) is a view taken in the direction of the arrow in Figure A.

[Figure 7] (A) is a plan view showing the state of the magnetic head, etc. in reverse playback or recording mode (B) is a view taken in the direction of the arrow in Figure A.

[Figure 8] (A) is a side view showing the arrangement of the control means, etc. at the cassette loading position (B) is a similar drawing showing the cassette loading/unloading position.

[Explanation of symbols]

4 Magnetic head 26 First tape guide 27 Second table guide 28 First table guide spring 29 Second table guide spring

Claims (2)

[Claims] Claim 1: A first pinch roller that is disposed outside two pinch rollers corresponding to two capstans and that guides a magnetic tape.
, the second tape guide is controlled by the control means to cause the second or first tape guide on the upstream side to slide into contact with the magnetic tape surface and in the width direction when the magnetic tape runs at the first or second constant speed. The first or second tape guide, which is located at the downstream side and is in the guiding position, is at least in the retracted position where it is out of sliding contact with the magnetic tape surface, and the other two pinch rollers are separated from the capstan and the magnetic tape guide is in the retreated position. A tape recorder characterized in that, when the tape is running at high speed, both the first and second tape guides are at positions where the magnetic tape surface slides and is guided in the width direction. [Claim 2] Inside the two pinch rollers, a tape guide portion is provided integrally with the pinch roller arm that holds the pinch roller, and the tape guide portion is pressed against the capstan by the pinch roller. 2. The tape recorder according to claim 1, wherein the tape recorder is configured to make sliding contact with at least a magnetic tape surface.