JP2672590B2 - Tape recorder device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a tape recorder device.

(Prior Art) Tape recorder devices for recording and reproducing tapes using audio / visual video cassette tapes have become widespread, and recently, digital audio tape cassettes (hereinafter referred to as DAT cassettes) have been used for digital recording. Tape recorder devices capable of recording and reproducing signals have appeared.

The DAT cassette described above is about half the size of the conventional compact cassette tape, the cassette body is provided with a lid and a slider, and the tape surface is
Further, except when the hub hole is closed by the slider and the tape recorder is set in the tape recorder device, the cassette has an airtight structure so as not to enter dust or dust that may cause dropout in digital recording.

When this DAT cassette is set in the tape recorder, the slider is moved and the hub hole appears,
Further, the lid is opened and the tape is engaged with the guides and rollers, and the tapes are wound around the rotary head drum by these guides and rollers to perform digital recording / reproduction.

Therefore, in the tape recorder device described above, the DAT
A loading mechanism that automatically sets the cassette on the rotary head drum is used.

This loading mechanism inserts a DAT cassette into the cassette insertion slot of the tape recorder body,
The cassette is attached to the cassette holder, the DAT cassette attached to the cassette holder is pulled in to move on the drive mechanism provided inside the tape recorder, first the slider is moved in the opening direction, then the lid is opened,
After this, the cassette holder descends and the DAT cassette is mounted on the drive mechanism. Thereafter, the tape is pulled out by the tape pulling member and wound around the rotary head drum, and digital recording / reproduction is performed. Fast-forwarding and rewinding of the tape is also performed with the tape wound around the rotary head drum.

In a tape recorder using such a loading mechanism, in order to perform high-quality digital recording / playback without tracking deviation, etc., the tape is pressed against the lead of the rotary head drum while applying a predetermined tension to the tape, and the tape runs. The stability of is secured. Further, when fast-forwarding and rewinding the tape, it is common to change the tape path so that the tension of the tape is lower than that at the time of recording / reproducing to reduce the winding angle of the tape around the fixed post. Furthermore, when the tape is stopped, to prevent tape sticking to the rotary head drum due to dew condensation and to prevent head jamming due to transfer of magnetic powder on the tape to the rotary head, similar to when fast-forwarding and rewinding. The tape path is changed to reduce the tension of the tape and the rotary head drum is idled.

2. Description of the Related Art Conventionally, for example, a tape recorder device of the type shown in FIG. 3 has been provided as a tape recorder device provided with means for changing the tension of the tape by a simple mechanism.

In this type of tape recorder device, a pinch roller 1 and a rotating roller 2 rotatably mounted on a fixed shaft are used.
A pinch lever 3 having a main chassis (not shown)
It is rotatably mounted on. Further, in the vicinity of the tape pull-out port (not shown) on the side of the tape take-up reel 5 on which the tape recorder 4 is mounted, the tape 6 is guided to the tape path allowable area and the fluctuation of the height of the tape 6 is controlled. A fixed guide post 7 is provided.

By changing the position of the pinch lever 3 at the time of recording / playback and at the time of fast forward / rewind or at the time of tape stop, the tape path at the time of recording / playback and the tape path at the time of fast forward / rewind or at the time of tape stop can be set. Change and record
The tape tension during playback and the tape tension during fast forward / rewind or tape stop are changed.

That is, at the time of recording / reproducing, the pinch lever 3 moves so that the pinch roller 1 is pressed against the capstan shaft 8 provided at a predetermined position of the main chassis via the tape 6.

At this time, the slider 11a having the guide roller 9a and the guide pin 10a causes the slider 11b to have the guide roller 9b and the guide pin 10b from the tape supply reel 12 side.
6 pulled out from the tape take-up reel 5 side by
Is further pulled out to the tape pull-out completion position determined by the catchers 14a, 14b fixedly arranged so as to sandwich the rotary head drum 13. The pulled-out tape 6 has a fixed guide post 15 disposed between the tape supply reel 12 and the tape pull-out completion position of the slider 11a, a guide roller 9a of the slider 11a, and a guide pin 1.
0a, rotary head drum 12, slider 11b guide pin 10b
Further, the tape is guided by the guide roller 9b, the pinch roller 1, the capstan shaft 8, the rotating roller 2, and the fixed guide post 7 to form a tape path for recording / reproducing. The tape 6 between the fixed guide post 15 and the guide roller 9a has a contact pin 17 of the tension control arm 16.
Is in contact.

On the other hand, when fast-forwarding / rewinding or when the tape is stopped, the pinch roller 1 is rotationally moved so that the pinch roller 1 is separated from the capstan shaft 8 as shown by the alternate long and short dash line in FIG.

Therefore, the tape path at the time of fast-forwarding / rewinding or at the time of stopping the tape moves to the inside of the tape path at the time of recording / reproducing between the guide roller 9b and the fixed guide post 7. Therefore, during fast-forwarding / rewinding or when the tape is stopped, the winding angle of the tape 6 around the fixed guide post 7 is reduced, and the tape 6 is separated from the capstan shaft 8 to reduce the tape running load, and thus Even when the tape is transferred from the reproduction state to the tape stop state, the pressure force of the tape 6 to the rotary head drum 13 can be weakened.

A fixed guide is provided so that the tape path between the rotary roller 2 and the tape take-up reel 5 is within the tape path allowable area during recording / playback, fast-forward / rewind, or tape stop. The tape is guided by the post 7.

In the tape recorder device in the state shown in FIG. 3, since the winding angle of the tape 6 on the guide roller 9b is small, the rotary head drum by the guide roller 9b is small.
The pressing force of the tape 6 against the lead of 13 becomes insufficient,
It becomes difficult to stably run the tape 6. Therefore, in practice, the tape pull-out completion position of the sliders 11a and 11b and the position of the rotary head drum 13 are further separated from the tape cassette 4 than the position shown in FIG. 3, and the tape 6 is wound around the guide roller 9b. The attachment angle is increased.

In the tape recorder device which changes the tension of the tape by such a mechanism, it is not necessary to idle the rotary head when the tape is stopped, so that the power consumption can be reduced.

By the way, in the tape recorder device using the DAT cassette, it is desired to reduce the size, weight and thickness of the device in accordance with the widespread use thereof.

However, in a tape recorder device of a type that changes the tape path only by moving a pinch lever equipped with a pinch roller and a rotation roller, the tape path near the tape pull-out port on the tape take-up reel side is guided within the tape path allowable area. Need a fixed guide post to do.

Therefore, the tape pull-out completion position of the slider for pulling out the tape, the position of the rotary head drum, and the like must be separated from the tape cassette by a certain distance or more, which makes it difficult to reduce the size, weight and thickness of the device. There was a problem.

(Problems to be Solved by the Invention) As described above, in the tape recorder device of the type in which the tape path is changed only by the movement of the pinch lever equipped with the pinch roller and the rotating roller, the power consumption of the device is reduced by the simple mechanism. However, the tape pull-out completion position of the slider that pulls out the tape and the position of the rotary head must be separated from the tape cassette mounting position by a certain distance or more, and the size, weight and thickness of the device can be reduced. There was a problem that it was difficult.

The present invention is for solving the above-mentioned problems,
An object of the present invention is to provide a tape recorder device capable of reducing the power consumption of the device with a simple mechanism and easily reducing the size, weight and thickness of the device.

[Structure of the Invention] (Means for Solving the Problems) The present invention is directed to forming a predetermined tape path by drawing a tape from a tape cassette by a tape drawing member, and recording / recording information by a rotary head drum equipped with a magnetic head.
In a tape recorder device for playing, a pinch roller provided on a pinch lever rotatably attached to a chassis and a pinch lever are driven to press the tape against a capstan shaft to drive the tape by a capstan drive. A means for switching and selecting the first tape running mode for running the tape and the second tape running mode for running the tape by reel drive by separating the pinch roller from the capstan shaft, and the pinch lever and rotating to the chassis separately. A guide roller that is provided so as to be positioned between the capstan shaft and the cassette on a movably mounted support lever and that constitutes a tape path near the tape pull-out port on the tape take-up reel side of the tape cassette; and a pinch lever. The support lever to the capstan shaft of the pinch roller by engaging the support lever with the support lever. The guide roller moves in accordance with the approaching operation and the separating operation from the capstan shaft, and the position of the guide roller in each tape running mode is set such that the tape path between the guide roller and the tape pull-out port of the cassette is within the tape path allowable area. It regulates the position range.

(Operation) In the present invention, the pinch roller pressed against the capstan shaft via the tape during recording / reproducing is separated from the capstan shaft when the tape is stopped and fast-forwarding / rewinding. Further, a support lever rotatably attached to the chassis separately from the pinch lever, a guide roller provided so as to be located between the capstan shaft and the cassette,
By using this tape guide member position regulation mechanism that regulates the position of the guide roller, the tape path near the tape pull-out port on the tape take-up reel side of the tape cassette is always within the tape path allowable area regardless of the tape running mode, and recording is performed.・ The tension of the tape is weakened by inserting the running post inside when the tape is stopped rather than during playback.

Therefore, since it is not necessary to idle the rotary head when the tape is stopped, the power consumption of the device can be reduced, and conventionally, it is provided near the tape pull-out port on the tape take-up reel side when the tape cassette is loaded. Since a fixed guide post is not necessary and the capstan shaft and the rotary head drum can be brought closer to the tape cassette, the size of the device can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram for explaining a tape recorder device according to an embodiment of the present invention.

As shown in the figure, on a main chassis (not shown), a tape supply reel 20a and a tape take-up reel 20b, which can be rotationally driven by a drive mechanism, are arranged. These tape supply reel 20a and tape take-up reel 20b
A rotary head drum 21 for recording / reproducing information on / from a tape is arranged on the main chassis at a predetermined distance from the.

In addition, the tape supply reel 20a and the tape take-up reel 2
On the main chassis between 0b and the rotary head drum 21, sliders 23a and 23b, which are tape pull-out members for pulling out the tape 22 from the DAT cassette (not shown) and winding it around the rotary head drum 21, are rotated from the DAT cassette. Two guide grooves (not shown) for guiding the head drum 21 laterally are provided. In the vicinity of the ends of these guide grooves on the rotary head drum side, catchers 24a, 24b for determining the final drawing position of each tape drawing slider are provided.
Is fixedly placed.

The sliders 23a and 23b include base plates 25a and 25b, and guide rollers 26a and 26b and guide pins 27a and 27b provided on the base plates 25a and 25b. Base plates 25a, 25b
One end of the loading links 28a and 28b is rotatably attached to the tip of the main body via the main chassis, and one end of the loading arms 29a and 29a is rotatably attached to the other ends of the loading links 28a and 28b. Has been. The other ends of the loading arms 29a, 29a are fixedly provided with loading gears 30a, 30b that mesh with each other and are rotatable, and a gear 32 formed at one end of a loading lever 31 meshes with the loading gear 30a. doing.

A protrusion (not shown) for operation is provided at the other end of the loading lever 31, and the protrusion is a control cam 33 that is rotationally driven in the directions of arrows A ₁ and A ₂ by a motor (not shown).
Is inserted in a control groove (not shown) for loading the device. Then, the loading lever 31 rotates in the directions of arrows B ₁ and B ₂ by the rotation of the control cam 33.

The control cam 33 has a control groove for mode switching (not shown) in addition to a control groove for loading. The control pin for the control slider 34 (not shown) is provided in the control groove for mode switching. Has been inserted. The control slider 34 is attached to the control cam 33.
It is supposed to be movable in the directions of arrows C ₁ and C ₂ by the rotation of.

A control groove 35 for controlling a pinch roller is formed in the control slider 34, and a control pin 36a of a pinch roller preload lever 36 is engaged with the control groove 35. The pinch roller preload lever 36 is rotatably attached to a rotary shaft 37 provided on the main chassis.

A bending piece 38a of a pinch lever 38 rotatably supported by a rotating shaft 37 is locked to the pinch roller preload lever 36. And the pinch roller preload lever 36 is
A preload spring (not shown) arranged at 37 preloads the pinch lever 38.

A pinch roller 39 is rotatably disposed on the pinch lever 38, and the pinch roller 39 uses the tape 22 to pull the capstan shaft 40 through the tape 22 when the tape 22 is pulled out by the tape pull-out sliders 23a and 23b. It is designed to be pressed against.

A guide protrusion 41 is formed on the pinch lever 38, and the guide protrusion 41 is engaged with the guide groove 42 a of the guide roller support lever 42. The guide roller support lever 42 is rotatably arranged on the main chassis,
A guide roller 43 for guiding the tape 22 is arranged on the guide roller support lever 42.

In this embodiment, the guide roller 43 corresponds to the tape guide member, and the pinch lever 38 having the guide pin 41 and the guide roller support lever 42 having the guide groove 42a constitute a tape guide member position regulating mechanism.

A fixed guide post 44, which constitutes a tape path between a guide roller 26a provided on the slider 23a and a tape pull-out port (not shown) on the tape supply reel 20a side, is provided near the tape pull-out completion position of the slider 23a. Is provided. In addition, the guide roller 26a and the fixed guide post 44
The contact pin 46 provided on the tension control arm 45 is in contact with the tape between and.

Next, the operation of the tape recorder device thus configured will be described.

First, a DAT cassette (not shown) is attached to a cassette holder (not shown). At this time, the slider (not shown) of the DAT cassette is opened by the claw of the cassette holder, and the sliders 23a and 23b are placed on the back surface of the tape 22. Next, the motor (not shown) that rotationally drives the control cam 33 is rotated, the control cam 33 rotates in the direction of arrow A ₁ , and the loading lever 31 rotates in the direction of arrow B ₁ .

By rotating the loading lever 31 in the direction of arrow B ₁ ,
The loading gears 30a, 30b rotate and the sliders 23a, 23b
Moves to the side of the rotary head drum 21 along a guide groove provided in the main chassis and is captured by the catchers 24a and 24b.

Simultaneously with the above-mentioned operation, the control slider 34 moves in the direction of arrow C ₂ to move the pinch lever 38 toward the capstan shaft 40. By the movement of the pinch lever 38, the pinch roller 39 is pressed against the capstan shaft 40 via the tape 22 and the guide roller 43 is moved to the tape take-up reel.
Move the tape path near the tape outlet on the 20b side to a position within the nape path allowable area.

As a result, as shown in FIG. 1, the tape supply reel
The tape 22 pulled out by the slider 23a from the side of 20a is a contact pin of the fixed guide post 44 and the tension control arm 45.
46, contacts the rotary head drum 21 via the guide roller 26a of the slider 23a and the guide pin 27a. Also, the tape pulled out by the slider 23b from the tape take-up reel 20b side.
22 is a guide roller 43, a pinch roller 39, a capstan shaft 40, a guide roller 26b of the slider 23b and a guide pin.
It contacts the rotary head drum 21 via 27b.

When the tape is driven to record or reproduce the tape in this state, the capstan shaft 40 rotates and the tape 22 pressed by the pinch roller 39 is driven. At the same time, the tape supply reel 20a and the tape take-up reel 20b rotate, and the tape 22 becomes the tape supply reel 2
Tape winding reel 20b from 0a through rotary head drum 21
It is wound up.

When the tape is stopped or when the tape is fast forwarded / rewound, the pinch lever 38 rotates to move the pinch roller 39 and the guide roller 43 further inside the tape path than the recording / reproducing positions described above. At this time, the tape path between the guide roller 26b provided on the slider 23b and the tape pull-out port on the tape take-up reel 20b side is the guide roller 26b.
, A guide roller 43, and a tape take-up reel 20b. The guide roller 43 includes a guide groove 42a provided in the guide roller support lever 42 and a guide pin 4 provided in the pinch lever and inserted in the guide groove 44a.
The position is regulated by 1 and the tape take-up reel 20b.
It is located at a position where the tape path near the side tape pull-out port is within the tape path allowable area.

The term "tape path permissible area" used here means the tape take-up reel without contacting the tape 22 with the wall of the tape take-out port 51 on the tape take-up reel 20b side of the tape cassette 50 as shown by the shaded area in FIG. It is an area where the tape 22 can be wound by the tape 20b or the tape 22 can be pulled out from the tape take-up reel 20b. In addition,
In FIG. 2, the members common to those in FIG.
The same reference numerals as those in the figure are given and the description thereof is omitted.

As described above, in the tape recorder device of this embodiment, the tape tension at the time of fast-forwarding / rewinding or at the time of stopping the tape can be made lower than that at the time of recording / reproducing, and at the same time, the tape take-up reel at the time of mounting the tape cassette. It is possible to guide the tape path in the vicinity of the tape pull-out port on the side of the tape take-up reel into the tape path permissible area without disposing a fixed guide post in the vicinity of the tape pull-out port on the side.

Therefore, it is not necessary to idle the rotary head drum even when the tape is stopped, and it is possible to obtain a small tape recorder device with low power consumption. Further, the tape stop mode and the tape fast-forward mode can be made the same to simplify the mechanism and reduce the cost.

The tape guide member and the tape guide member position regulating mechanism used in the tape recorder device of the present invention are not limited to the members and mechanisms illustrated in the embodiments, and any members can be used as long as the simultaneous effects can be obtained. It may be a member and a mechanism. Further, in the above-mentioned embodiment,
In particular, the tape recorder device using the DAT cassette has been described, but it goes without saying that the present invention may be applied to a tape recorder device using a conventionally used video tape.

As described above, according to the present invention, it is possible to obtain a tape recorder device in which protection of the tape and the magnetic head when the tape is stopped, low power consumption, and miniaturization are achieved by a simple mechanism. You can

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a tape recorder device according to an embodiment of the present invention, FIG. 2 is a diagram for explaining a tape path allowable area, and FIG. 3 is an example for a conventional tape recorder device. FIG. 38 …… Pinch lever, 39 …… Pinch roller, 40 …… Capstan shaft, 41 …… Guide pin, 42 …… Guide roller support lever, 42a …… Guide groove, 43 …… Guide roller.

Claims (1)

(57) [Claims] Claim: What is claimed is: 1. A tape recorder device for drawing a tape from a tape cassette by a tape drawing member to form a predetermined tape path, and recording and reproducing information by a rotary head drum equipped with a magnetic head. A pinch roller provided in a pinch lever attached to the first pinch roller, a first tape running mode for driving the pinch lever to press the tape against the capstan shaft by the pinch roller to run the tape by the capstan drive, and a pinch roller Means for switching and selecting the second tape running mode in which the tape is moved away from the capstan shaft to run the tape by the reel drive, and the support lever rotatably attached to the chassis separately from the pinch lever, The tape cover is provided so as to be located between the capstan shaft and the cassette. Guide roller forming a tape path in the vicinity of the tape pull-out port on the tape take-up reel side of the cartridge, the pinch lever and the support lever are engaged, and the support lever is connected to the capstan shaft of the pinch roller. The tape path between the guide roller and the tape pull-out port of the cassette moves in accordance with the approaching movement and the separating movement from the capstan shaft, and the position of the guide roller in each tape running mode is allowed to pass the tape. A tape recorder device, comprising: a tape guide member position restricting mechanism for restricting a position within a region.