JPH06168512A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To enable a reel table to be rotatable by a capstan motor, etc., and to make the device small in size and light in weight by moving the reel table with a rotational movement around a fulcrum provided on a mechanical deck part and rotating the reel table by driving a driving gear while engaging it with a driven gear. CONSTITUTION:When the capstan motor 28 is rotated, a pulley 42 is rotated through a pulley 44, a belt 47, pulleys 46, 48 and a belt 49, and an oscillating arm 40 is rotated by friction. Next, a gear 41 is rotated through a gear 43. So, when the pulley 42 is rotated clockwise, the gear 41 is rotated clockwise, and a gear 38 is rotated counterclockwise by the counterclockwise rotation of the arm 40. An idler gear 38' is rotated clockwise through the arm 40 by the clockwise rotation of the pulley 42. Subsequently, the reel tables 18, 18' are rotated in the specified direction through the gears 37, 37' and the driven gears 19, 19'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel recording / reproducing device. Specifically, two tape cassettes of different sizes can be mounted, in which both ends of the recording medium tape are separately fastened and the intervals between the winding tape reel and the supply tape reel are different. In a recording / reproducing apparatus in which two reel bases that are engaged with the two tape reels separately are moved at two positions, an existing motor such as a capstan motor is used without using a motor dedicated to the reel base. Enables indirect drive to rotate the reel stand,
An object of the present invention is to provide a new recording / reproducing device that can be made compact, lightweight, and low cost.

[0002]

2. Description of the Related Art Two different sizes of tape cassettes can be mounted, in which both ends of a recording medium tape are separately fastened and the distance between a winding tape reel and a winding tape reel is different. Then, there is a recording / reproducing apparatus in which the reel stand engaging with the tape reel is moved at two positions.

In order to move the reel stand at two positions,
Each reel stand has its own motor.

[0004]

By the way, as in the conventional recording / reproducing apparatus, when each reel stand is provided with a dedicated motor, there is a problem that the size and weight of the member supporting the reel stand increases. .

There is also a problem that the mechanism becomes complicated.

[0006]

The recording / reproducing apparatus of the present invention comprises:
In order to solve the above-mentioned problems, two tapes of different sizes having different intervals between a supply-side tape reel and a winding-side tape reel in which both ends of a recording medium tape are separately fixed and wound A cassette can be installed, and the above 2
Two reel stands that engage with one tape reel separately
A recording / reproducing device which is configured to move at one position,
The reel base is moved by rotating around a fulcrum provided on the mechanical deck, and a drive gear provided coaxially with the fulcrum is meshed with a driven gear provided on the reel base, and the drive gear is provided. The reel base is rotated by driving.

[0007]

Therefore, in the recording / reproducing apparatus of the present invention, the driven gear provided on the reel stand is in mesh with the drive gear regardless of which of the two positions the reel stand is on, and therefore, the other condition is eliminated. Since the reel stand can be driven by transmitting the driving force of the motor to the drive gear, a dedicated reel stand motor can be dispensed with, and at least one reel stand motor for two reel stands. Can be sufficient.

[0008]

The details of the recording / reproducing apparatus of the present invention will be described below with reference to the illustrated embodiments.

First, an outline of two large and small tape cassettes used in the recording / reproducing apparatus of the present invention will be described.

Reference numeral 1 is a large tape cassette, and 2 is its cassette case.

The cassette case 2 is in the shape of a horizontally-long rectangular flat box when viewed from above, and has tape outlets 3, 3 formed at the left and right ends of the front surface thereof. A mouth portion 4 is formed between the front and the bottom of the mouth portion.

Inside the cassette case 2, tape reels 6 and 6 ′, to which both ends of the magnetic tape 5 are fixed and wound, are rotatably housed. These tape reels 6 and 6 are rotatably housed.
The reel stand engaging holes 7a, 7a opened at the lower end are formed in the hubs 7, 7'of these '.
A is exposed to the outside through a reel stand insertion hole (not shown) formed in the bottom wall of the cassette case 2.

A part of the magnetic tape 5 is led out of the cassette case 2 through the tape outlets 3 and 3 and is located along the front surface of the mouth portion 4.

In addition, a front lid and the like for opening and closing the front surface of the magnetic tape 5 rotatably supported on the front surface of the cassette case 2 and spanning along the front surface of the cassette case 2 are provided. , Illustration and description thereof are omitted.

Reference numeral 8 is a small tape cassette, and 9 is its cassette case.

When viewed from above, the cassette case 9 is in the shape of a flat box having a horizontally long rectangular shape, which is considerably smaller than the cassette case 2 of the large tape cassette 1.
The tape reels 13 and 13 ′ each have a magnetic tape 12 wound therein. Incidentally, 14 and 14 are tape reels 13 and 1, respectively.
3 ′ hubs, 14a, 14a are reel base engaging holes opened at the lower ends of the hubs 14, 14, and the reel base engaging holes 1
4a and 14a are tape reels 6 of the large tape cassette 1,
It has substantially the same size as the reel stand engaging holes 7a and 7a of 6 '.

Reference numeral 15 denotes a video tape recorder, which is a so-called compatible type that can use the two types of tape cassettes 1 and 8 of large and small.

Numerals 16 and 16 'are reel base arms, and the base ends of the arms are spaced apart from each other at a position near the front side of the mechanical chassis 17, which is the base body, and are freely rotatable by the rotary shafts 16a and 16'a. Supported by. The reel bases 18 and 18 'are rotatably supported by the rotation ends of the reel base arms 16 and 16'. Reference numerals 18a and 18'a denote reel engagement shafts provided so as to project from the upper surfaces of the reel stands 18 and 18 '. Driven gears 19 and 19 'are integrally provided at the lower ends of the reel stands 18 and 18'.

A brake drum 18b is provided below the driven gear 19 on the supply-side reel stand 18.

The reel base arms 16 and 16 'are rotated between the small cassette position shown in FIG. 2 and the large cassette position shown in FIG. The axial distance between the reel bases 18 and 18 'is equal to the axial distance between the tape reels 13 and 13' of the small tape cassette 8 in the small cassette position, and the reel bases 18 and 18 in the large cassette position. The distance between the axes of the tape reels 6 and 6'of the tape cassette 1 is large.
Is equal to the axis distance of.

Reference numeral 20 denotes a pullout arm, one end of which is rotatably supported by the mechanical chassis 17, and a pullout guide 21 is provided upright at the other end. Until the tape cassette 1 or 8 is loaded, that is, in the initial state, the tape cassette 1 or 8 is at the initial position indicated by the chain double-dashed line in FIGS. When performing tape loading for winding on the drum, when the reel base arms 16 and 16 'are in the small cassette position as shown in FIG. 2, the reel base arms 16 and 16' are rotated to the first withdrawal position shown in FIG. Reel stand arm 16, 1
When 6'is in the large cassette position, it rotates to the second withdrawal position shown in FIG.

Reference numeral 22 denotes a head drum which is provided on the inner side of the mechanical chassis 17 in a substantially central portion in the left-right direction, and has a fixed drum and a rotary drum, and a magnetic head (not shown) is supported on the rotary drum.

Reference numerals 23 and 23 denote tape loading blocks, which have loading guides 24 and 24 and inclined guides 25 and 25, respectively, and are moved along guide grooves 26 and 26 formed in the mechanical chassis 17, In the initial state, it is at the initial position shown by the chain double-dashed line in FIGS. 1 and 2, and when the tape is loaded, it is moved to the loading completion position located on both sides of the head drum 22 on the innermost side.

Reference numeral 27 denotes a capstan, which is rotated by a capstan motor 28 and projects above the mechanical chassis 17 at a position slightly separated to the right of the head drum 22.

A gear 29 is fixed to the output shaft of the capstan motor 28.

Reference numeral 30 denotes a pinch roller arm, the base end portion of which is rotatably supported at a position closer to the right side on the far side from the center of the mechanical chassis 17. A pinch roller 31 is rotatably supported on the rotating end portion.
In the initial state, the pinch roller arm 30 is located at the initial position shown by the chain double-dashed line in FIGS.
When reproducing or recording, the pinch roller 31 is moved to the pressure-bonding position where it is pressure-bonded to the capstan 27 via the magnetic tape 5 or 12 as shown by the solid line in the figure.

Reference numeral 32 denotes a tension regulator arm, which is rotatably supported at a position near one end of the tension regulator arm to some extent to the left of the center of the mechanical chassis 17 on the innermost side. A tension pin 33 is erected on the other end of the tension regulator arm 32.

In the initial state, the tension regulator arm 32 is in the initial position shown by the chain double-dashed line in FIGS. 1 and 2, and is rotated counterclockwise from the initial position during the operation during reproduction or recording. And pull out the magnetic tape 5 or 12 from the cassette case 2 or 9.

The tension regulator arm 32 is urged to rotate counterclockwise as viewed from above by a resilient means (not shown).
Or, it comes into elastic contact with 12 from the inside.

34 is a band-shaped brake band,
One end thereof is supported by a support portion 35 near the left end of the central portion of the mechanical chassis 17, and the other end thereof is supported by a support portion 36 at one end of the tension regulator arm 32. The middle part of the brake band 34 is wound around the brake drum 18b of the reel stand 18 on the supply side.

The positional relationship between the two support portions 35 and 36 supporting both ends of the brake band 34 is substantially the same when the large tape cassette 1 is used and the small tape cassette 8 is used. It is in such a positional relationship.

When the tape cassette 1 or 8 is mounted at the cassette mounting position of the video tape recorder 15, the pull-out guide 21, the loading guides 24 and 24, the tilt guides 25 and 25, and the pinch roller 3 located at the initial position.
0 is relatively inserted into the mouse portion 4 or 11 of the tape cassette 1 or 8. When the large tape cassette 1 is loaded, the reel stands 18, 18 'at the large cassette position
Reel engaging shafts 18a, 18'a of the tape reels 6, 6
When the small tape cassette 8 is mounted by being engaged with the reel base engaging holes 7a, 7a of the reel base 18 ', the reel engaging shafts 18a, 18'a of the reel bases 18, 18' located at the small cassette position are the tape reels 13. , 13 'reel stand engaging holes 14a, 14
a is engaged.

Then, the tape loading block 2
3, 23 are moved to the loading completion position, and the pull-out guide 21 is moved to the second position shown in FIG. 1 in the case of the large tape cassette 1, and to the first position shown in FIG. 2 in the case of the small tape cassette 8. And the magnetic tape 5
Or 12 is passed through a predetermined tape path. When reproduction or recording is performed, the pinch roller 30 is pressed against the capstan 27 with the magnetic tape 5 or 12 sandwiched between them, and the tension regulator arm 32 is rotated counterclockwise from the initial position to move the tension pin 33. Magnetic tape 5
Or 12 is elastically contacted from the inside.

When the tension of the magnetic tape 5 or 12 on the supply side of the head drum 22 becomes smaller, the tension regulator arm 32 rotates counterclockwise as viewed from above and its one end portion 36 (the support portion of the brake band 34). ) Moves away from the reel stand 18, the brake band 34 tightens the brake drum 18b of the reel stand 18, thereby increasing the tension of the magnetic tape 5 or 12.

When the tension of the magnetic tape 5 or 12 on the supply side of the head drum 21 is increased, the tension regulator arm 32 is rotated clockwise as viewed from above, and one end 36 of the tension regulator arm 32 approaches the reel stand 18. Since it moves, the tightening of the brake band 34 with respect to the brake drum 18b of the reel stand 18 is weakened, whereby the tension of the magnetic tape 5 or 12 is reduced.

Since the support portions 35 and 36 at both ends of the brake band 34 are provided at the positions as described above, when the large tape cassette 1 is used and the small tape cassette 8 is used.
When using the, the brake drum 18 of the brake band 34
There is almost no difference in the wrapping angle with respect to b, so that the difference in tension applied to the magnetic tapes 5 and 8 can be reduced.

37 and 37 'are the reel base arms 16 and
The drive gear is rotatably supported by the rotating shafts 16a, 16'a of 16 ', and meshes with the driven gears 19, 19'. Since the drive gears 37 and 37 'are supported by the rotation shafts 16a and 16'a of the reel base arms 16 and 16', the driven gears 37 and 37 'are driven regardless of the positions of the reel base arms 16 and 16'. The gears 19 and 19 'never disengage.

Reference numerals 38 and 38 'are idler gears that are rotatably supported by the mechanical chassis 17 and mesh with the drive gears 37 and 37'. The idler gears 38 and 38 'are integrated with the brake drums 39 and 39'. Is formed in.

Reference numeral 40 denotes a swing arm, the front end of which is rotatably supported by the front end of the mechanical chassis 17, and the swing gear 41 is rotatably supported by the swing end.

A pulley 42 is rotatably supported on the rotating shaft 40a of the swing arm 40.
A gear 43 is integrally provided in the gear 2, and the gear 43 is meshed with the swing gear 41.

A friction member is interposed between the pulley 42 and the swing arm 40, and a torque limiter mechanism (not shown) is interposed between the gear 43 integrated with the pulley 42 and the swing gear 41. ing.

A pulley 44 is rotatably supported on the mechanical chassis 17 in the vicinity of the capstan motor 28. A gear 45 is integrally formed on the pulley 44. The gear 45 is a capstan motor. It is meshed with the gear 29 fixed to the output shaft of 28.

Reference numeral 46 denotes a pulley rotatably supported at a substantially intermediate position on the right end side of the mechanical chassis 17 in the front-rear direction. A belt 47 is provided between the pulley 46 and the pulley 44.
Has been bridged.

The pulley 46 is integrally formed with a pulley 48 having a larger diameter. A belt 49 is stretched over the pulley 48 and a pulley 42 rotatably supported by the rotating shaft 40a of the swing arm 40.

When the capstan motor 28 rotates, the pulley 44, the belt 47, the pulleys 46, 48,
The pulley 42 is rotated via the belt 49.

When the pulley 42 rotates, friction between the pulley 42 and the swing arm 40 causes the swing arm 40 to rotate in a direction corresponding to the rotation direction of the pulley 42. That is, when the pulley 42 rotates in the clockwise direction, the swing arm 40 rotates in the clockwise direction, and when the pulley 42 rotates in the counterclockwise direction, the swing arm 40 rotates in the counterclockwise direction. To do.

When the pulley 42 rotates, the swing gear 4 meshed with the gear 43 integral with the pulley 42.
1 rotates.

Therefore, when the pulley 42 rotates counterclockwise, the swing gear 41 rotates clockwise,
When the swing arm 40 rotates counterclockwise, the swing arm 40 meshes with the idler gear 38, and the idler gear 38
Rotate counterclockwise. In addition, the pulley 42
When is rotated in the clockwise direction, the swing gear 41 rotates in the counterclockwise direction, and the clockwise rotation of the swing arm 40 meshes with the idler gear 38 ', and the idler gear 38' is rotated clockwise. Rotate in the rotating direction.

Then, these idler gears 38, 38 '
The drive gears 37, 37 'are rotated by the drive gears 37, 37', and the driven gears 19, 19 'are rotated by the drive gears 37, 37', whereby the reel bases 18, 18 'are rotated in a predetermined direction.

Reference numerals 50, 51 and 52 denote brake arms, each of which has a substantially middle portion rotatably supported by the mechanical chassis 17.

Then, these brake arms 50, 5
1, 52 are brake shoes 53,
54, 55, the brake shoe 53 is positioned to face the left side surface of the brake drum 39, the brake shoe 54 is positioned to face the front surface of the brake drum 39 ', and the brake shoe 55 is It is located so as to face the right side surface of the brake drum 39 '.

A tension coil spring 56 is provided between the other rotating end of the brake arm 50 and the mechanical chassis 17.
And a tension coil spring 56 is stretched between the other rotating ends of the brake arms 51, 52, whereby the brake arms 50, 51,
52 has brake shoes 53, 5 respectively provided
Rotational force is urged in a direction in which 4, 55 are pressed against the side surfaces of the brake drums 39, 39 '.

57 is the brake arm 50, 51, 5
2 is a cam plate for controlling the position of 2, and is supported by the mechanical chassis 17 so as to be movable in the left and right directions.
It has 8, 59 and 60. A rack 61 is formed at the left end of the trailing edge.

Reference numeral 62 denotes a loading motor supported on the left end of the rear portion of the mechanical chassis 17, and the magnetic tape 5 or 12 is loaded by driving the loading motor 62.

The rotation of the loading motor 62 is transmitted to the rack 61 of the cam plate 57 by the gear trains 63, 64, 65, 66, 67, 68, and the cam plate 57 is moved in the left-right direction.

Then, the brake arms 50, 51,
Controlled pins 69, 70, 71 projecting from the respective 52 are slidably engaged with the cam grooves 58, 59, 60 of the cam plate 57, respectively.

Therefore, the position of the brake arms 50, 51, 52, that is, the brake shoes 53, 54, 55 are brought into contact with or contacted with the brake drums 39, 39 'by the movement of the cam plate 57 in the left-right direction. Controlled.

[0058]

As is apparent from the above description, the recording / reproducing apparatus of the present invention includes a supply-side tape reel and a winding-side tape reel in which both ends of a recording medium tape are separately fastened and wound. It is a recording / reproducing apparatus in which two different size tape cassettes having different intervals can be mounted, and two reel bases respectively engaged with the two tape reels are moved at two positions. Then, the reel base is moved by rotating the reel base around a fulcrum provided on the mechanical deck, and a drive gear provided coaxially with the fulcrum is meshed with a driven gear provided on the reel base. It is characterized in that the reel base is rotated by driving the drive gear.

Therefore, in the recording / reproducing apparatus of the present invention,
Whichever position the reel stand is in, the driven gear provided on the reel stand is in mesh with the drive gear, so the driving force of another motor is transmitted to the drive gear to drive the reel stand. Therefore, the motor dedicated to the reel stand can be eliminated, and at least one reel stand motor can be used for at least two reel stands.

It should be noted that the specific structures or shapes of the respective parts shown in the above-mentioned embodiments are merely examples of specific embodiments for carrying out the present invention. The technical scope of the present invention should not be limitedly interpreted by these.

[Brief description of drawings]

FIG. 1 shows an example of an embodiment of a recording / reproducing apparatus of the present invention, and is a plan view showing a state in which a large tape cassette is mounted in a horizontal section of the large tape cassette.

FIG. 2 is a plan view showing a state in which the small tape cassette is mounted in a horizontal section of the small tape cassette.

FIG. 3 is a plan view showing a main part when a large tape cassette is used.

FIG. 4 is a plan view showing a main part when a small tape cassette is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 tape cassette 5 recording medium tape 6 supply side tape reel 6'winding side tape reel 8 tape cassette 12 recording medium tape 13 supply side tape reel 13 'winding side tape reel 15 recording / reproducing apparatus 16a, 16'a fulcrum 18, 18 'reel stand 19, 19' driven gear 37, 37 'drive gear 39, 39' brake drum 50, 51, 52 brake arm 53, 54, 55 brake shoe 57 cam plate 58, 59, 60 cam groove 69, 70 , 71 Controlled protrusion

Claims (3)

[Claims] 1. A tape cassette of two different sizes, in which both ends of a recording medium tape are separately fastened and the intervals between a winding tape reel on a supply side and a winding tape reel on a winding side, which are different from each other, can be mounted. In the recording / reproducing apparatus, the two reel stands, which are respectively engaged with the two tape reels, are moved at two positions, and the movement of the reel stand is performed around a fulcrum provided on the mechanical deck section. It is performed by rotating and moving, and a drive gear provided coaxially with the fulcrum is meshed with a driven gear provided on the reel base, and the reel gear is rotated by driving the drive gear. Recording and reproducing device. 2. The recording according to claim 1, wherein a brake drum is provided on one of gears of a gear train on the side opposite to the driven gear of the drive gear, and a brake shoe is provided in pressure contact with the brake drum. Playback device. 3. A brake shoe is attached to one rotating end portion of a rotatable brake arm, and a controlled projection is provided at a position apart from a rotation fulcrum of the brake arm, so that the brake arm is slidable. A cam groove is formed on the cam plate, the controlled projection of the brake arm is slidably engaged with the cam groove, and the position of the brake shoe is controlled by moving the cam plate. The recording / reproducing apparatus according to claim 1 or 2, which is characterized.