JPH0528585A - Tape player - Google Patents

Abstract

PURPOSE:To facilitate a wiring process concerning a detecting means for detecting the presence of discriminating holes and to promote the reliability of a detecting operation and then to eliminate the necessity of any space for wiring around a moving locus of a slide chassis in such a tape player that a tape cassette expressing information on a tape depending upon whether the discriminating holes are formed or not on a cassette case is used, and a cassette loading part is provided on the slide chassis supported freely slidably by a fixed chassis equipped with a recording and reproducing means, etc., where an operation on the tape is performed under the state of the slide chassis moved into a drawing position to be approximately overlapped with the fixed chassis. CONSTITUTION:The cassette loading part 61 is provided with discriminators 79, 80 and 81 to be displaced downward when the discriminating holes 15, 16 and 17 are closed, and the fixed chassis 21 is provided with a detecting switch 82 equipped with pressed pieces 84, 85 and 86 to be pressed by the discriminators displaced downward when the slide chanssis 23 comes into the drawing position (15-17, 61, 80, 81, 85, 86, not shown in caption).

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel tape puller. More specifically, a tape cassette that displays information about the tape depending on whether or not a discrimination hole is formed at a predetermined position of the cassette case is used, and a cassette mounting portion to which the tape cassette is detachably mounted is provided with a recording / reproducing means or the like. The present invention relates to a tape player, which is provided on a slide chassis slidably supported by a fixed chassis provided, and the operation of the tape is performed in a state where the slide chassis is moved to a retracted position substantially overlapping the fixed chassis. It is easy to process the wiring related to the means to detect the presence or absence of
In addition, it is an object of the present invention to provide a novel tape player that has high reliability of detection operation and that does not require a space for wiring around the movement path of the slide chassis and can promote miniaturization accordingly. is there.

[0002]

2. Description of the Related Art Most tape players use a cassette type magnetic tape as a recording medium, that is, two tape reels, a supply side and a take-up side, in which a magnetic tape is wound inside a cassette case so as to be freely rotatable. I am supposed to use the one I made.

By the way, in such a tape player, it is possible to reduce the size of the tape player in use by inserting the recording / reproducing means into the tape cassette mounted in the cassette mounting portion. is there.

Then, the chassis that forms the base of the mechanical portion of the tape player is divided into a fixed chassis and a slide chassis slidably supported by the fixed chassis, and the fixed chassis is provided with recording / reproducing means, a circuit board, and the like, and the slide chassis is reeled. A cassette mounting portion having a table or the like is provided, and recording and reproduction can be performed in a state where the slide chassis is moved to a retracted position substantially overlapping the fixed chassis and the recording / reproducing means and the like are inserted inside the tape cassette. Conceivable.

For example, in a video tape player, a relatively large mouse portion is formed on the front surface of a cassette case of a tape cassette to be used, a head drum or the like is provided on a fixed chassis, and a slide chassis is moved to a retracted position. By doing so, it is conceivable that the head drum is located in the mouth portion and the magnetic tape is wound around the outer peripheral surface thereof.

[0006]

By the way, the tape cassette is usually provided with a display means for displaying information about the tape in the cassette case, for example, the type of the tape and the contents of the instruction to permit or disallow recording.

Conventionally, there are several such display means, and one of them is a hole for discriminating information (hereinafter referred to as "discrimination hole") at a predetermined position of the cassette case. There is a device that displays information about the tape cassette depending on whether or not the tape cassette is formed. And
In a tape player using a tape cassette provided with such a display means, a detection means for detecting the presence or absence of the discrimination hole is provided in the cassette mounting portion, and as such a detection means, In many cases, the detection operation is performed electrically.

However, when the tape player has the above-mentioned slide structure, the detection means provided in the cassette mounting portion on the slide chassis and the circuit on the circuit board fixed to the fixing chassis have flexibility. It is necessary to connect by using a connecting means, for example, a conductor made of a wire material or a flexible wiring board, and moreover, the connecting means needs to have a length longer than the movement stroke of the slide chassis. When moving to the retracted position, the connecting means is loosened.Therefore, a space of a certain size is provided around the movement track of the slide chassis to prevent the connecting means from being caught by other members. Or, since it is necessary to provide a guard member etc., not only is the processing of the wiring related to the detection means extremely troublesome, Since the stress due to deformation caused by the movement of the slide chassis occurs in the unit, a fear of breakage becomes high and, significantly impede such miniaturization of the tape player in a dead space is generated in the interior space, various problems arise.

[0009]

Therefore, in order to solve the above-mentioned problems, the tape player of the present invention determines whether or not the information regarding the cassette mounting portion, that is, the tape, is formed with a discrimination hole at a predetermined position of the cassette case. The cassette mounting portion for mounting the tape cassette to be displayed by means of is provided on the slide chassis slidably supported by the fixed chassis equipped with the recording / reproducing means, and the operation for the tape substantially overlaps the slide chassis with the fixed chassis. When the slide chassis reaches the retracted position, the discriminator whose position differs depending on the presence or absence of the discrimination hole of the tape cassette is installed in the cassette mounting section. The fixed chassis is provided with a detecting means for detecting automatically.

[0010]

Therefore, in the tape player of the present invention, the discriminator and the detecting means for detecting the presence / absence of the discriminating hole of the tape cassette are provided when the slide chassis is in the retracted position.
That is, when it becomes possible to operate the tape, it becomes possible to function in correspondence with each other, so that the detection function is not impaired.
Moreover, since the detecting means is provided in the fixed chassis, the connecting means for connecting the circuit board having the circuit for detecting the presence / absence of the discrimination hole to the detecting means does not need an extra length, and Since its position can be fixed with respect to the fixed chassis, wiring processing is easy and
Since the connecting means is not stressed, the reliability of the operation can be enhanced, and further, since it is not necessary to provide a space for wiring around the moving track of the slide chassis, the tape player can be downsized accordingly. be able to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the tape player of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

The embodiment shown in the drawings applies the present invention to a video tape recorder 1 which uses a tape cassette conforming to the 8 mm video standard in which the outer shape and dimensions are standardized. ..

Before describing the video tape recorder 1, an example 2 of a tape cassette used in the video tape recorder 1 will be described (see FIGS. 1 to 4 and 8 to 11).

Reference numeral 3 denotes a cassette case of the tape cassette 2, which has two rectangular halves 4 when viewed from the thickness direction.
And 4'are integrally combined to form a relatively thin box shape, and the tape outlets 5, 5 are provided at the left and right ends of the front surface 3a.
And a cassette case 3 is formed at the tape outlets 5 and 5.
In-cassette guides 6, 6 extending in the thickness direction are provided.

A pair of tape reels 8 and 9 on which a magnetic tape 7 is wound inside the cassette case 3, that is, a supply side tape reel 8 (hereinafter referred to as "S reel") and a winding side tape reel 9. (Hereinafter, referred to as “T reel”.) Is rotatably housed and movably housed so that the axial distance between them can be expanded or contracted.

Numerals 10 and 10 denote reel holding plates, which are located on the bottom of the cassette case 3 so as to be biased to the left and right sides respectively, and the front end of which is rotatably supported by the bottom plate 11 of the cassette case 3. And such a reel holding plate 10,
Two tape reels 8 and 9 are individually and rotatably supported on the disk 10.

The reel holding plates 10 and 10 hold the axial distance between the two tape reels 8 and 9 at a standard axial distance according to the 8 mm video standard (hereinafter referred to as "standard axial distance"). 4 and the open position shown in FIG. 4, that is, the axial distance between the two tape reels 8 and 9 is somewhat longer than the standard axial distance (hereinafter referred to as “enlarged axial distance”). ) To the open position,
When the reel base moving operation by the video tape recorder 1 is performed, it is moved to the open position in accordance with it, and is otherwise held at the standard position.

The tape reels 8 and 9 are such that the lower end portions of the hubs 12 and 12 which are the tape winding portions are the reel holding plates 1.
Circular reel support holes 10a, 10 formed in 0, 10
a (see FIG. 3), the reel holding plate 10,
It is rotatably supported by 10, and faces the outside of the cassette case 3 through slightly elongated reel base insertion holes 11a, 11a (see FIG. 3) formed in the bottom plate 11.

10b and 10b are reel holding plates 10 and 10, respectively.
Is an interlocking hole formed at the rotating end of the.

The magnetic tape 7 emerges from the S reel 8 and is wound around one of the cassette inner guides 6 so that the cassette case 3
It is led out to the outside and is introduced into the cassette case 3 from where it is wound around the other in-cassette guide 6 and reaches the T reel 9. Therefore, a part of the magnetic tape 7 is part of the two in-cassette guides 6, 6. It is located along the front surface 3a of the cassette case 3 while being stretched between them.

On the bottom plate 11 of the cassette case 3, a magnetic tape 7 is stretched between the left and right guides 6 in the cassette.
A notch 11b is formed by largely notching the rear portion of the notch 11b, and the notch 11b has a trapezoidal shape with a substantially forward spread. The notch 11b is entirely opened by moving the reel holding plates 10 and 10 to the open position (see FIG. 4).

In the inside of the cassette case 3, a recessed space 13 corresponding to the cutout 11b is a mouse portion into which a head drum or the like is inserted at the time of recording or reproducing.

Reference numeral 14 denotes a lid for opening and closing the front surface 3a of the cassette case 3, which covers the magnetic tape 7 stretched between the guides 6 in the cassette from the front as shown by the solid line in FIG. Is moved between the closed position and the open position where the front side of the magnetic tape 7 is opened, as shown by the chain double-dashed line in the figure, and the movement to the open position is performed by the opening mechanism of the video tape recorder 1. Otherwise held in the closed position.

Reference numerals 15, 16 and 17 are discriminating holes for displaying a plurality of information on the magnetic tape 7 and for causing the video tape recorder 1 to read the displayed contents.

Each of these three discrimination holes 15, 16 and 17 has a relatively small circular shape having substantially the same size.
It is arranged at a corner portion near the T reel 9 in the inner portion of the bottom plate 11. Then, one of these three discrimination holes 15, 16 and 17 15 (hereinafter, referred to as "first discrimination hole").
Is a discriminating hole for displaying an instruction content as to whether or not recording on the magnetic tape 7 is permitted depending on whether or not the disc is opened. 17 and 17 (hereinafter, "third discrimination hole")
Say ) Is a combination of which of these is open and which is closed, for example, the type of the magnetic tape 7, for example, the type of the magnetic body of the magnetic tape 7 or the type of the coating method, specifically, , A magnetic tape is a normal tape made of iron oxide, or a tape other than that, if it is a tape other than that, it is a metal tape containing pure iron as a main component, or a chrome tape containing chromium dioxide as a main component Or, if it is a metal tape, it is a discrimination hole for displaying the type such as a coating type or a vapor deposition type.

The first discriminating hole is opened and closed by an indicator member movably supported on the cassette case 3, and the other two discriminating holes 16 and 17 are closed integrally with the bottom plate 11 in a state where they can be easily broken. Depending on whether the lid is broken off or left as it is, it is opened or closed from the time of shipment.

Reference numeral 18 denotes an instructing member for selectively instructing a person who uses the tape cassette 2 whether to permit or deny recording on the magnetic tape 7. The obstructing portion 18a has a vertically long rectangular parallelepiped shape and its left side surface. A plate-shaped display portion 18b protruding leftward from the rear end portion and a finger-holding portion 18c formed on the back surface of the display portion 18b are integrally formed, and as shown in FIG. In order to move between the first position where the discrimination hole 15 is open and the closing portion 18a comes over the discrimination hole 15 and closes the discrimination hole 15 Is movably supported by the cassette case 3, and a click stop is individually applied at these two positions. The instruction content when the indicating member 18 is in the first position is "record". "Rejected" and is in the second position Instruction content is "record acceptable".

A rectangular display hole 19a is formed in the rear wall 19 and the finger hook portion 18c of the pointing member 18 is formed.
Is movably positioned in the display hole 19a so that the pointing member 18 can be operated from the outside of the cassette case 3, and the display hole 19a is positioned so that the pointing member 18 is at the first position. When it comes, it is closed by the display portion 18b, and when it is moved to the second position, it is opened,
As a result, the current instruction content can be known by looking at the state of the display hole 19a.

Numerals 20 and 20 'are closing lids formed integrally with the bottom plate 11 and are disc-shaped with a diameter substantially the same as the discrimination holes 16 and 17, and are openings above the discrimination holes 16 and 17. 2 located on opposite sides of the peripheral surface
Two continuous parts 20a, 20a, 20'a, 2
It is connected to the opening edge portions of the discrimination holes 16 and 17 by 0'a, so that it can be easily folded from the bottom plate 11, and the type of the magnetic tape 7 accommodated in the cassette case 3 can be selected. Accordingly, it is broken off or left as it is (FIG. 4 and FIG. 10 show the unbroken state).

The tape cassette 2 is constructed as described above. Therefore, in the tape cassette 2, the front face 3a of the cassette case 3 is closed by the lid body 14, and 2
The tape reels 8 and 9 are mounted on the video tape recorder 1 in a state where the axial distance between them is the standard axial distance.

The video tape recorder 1 has a fixed chassis 2
It is composed of a fixed part 22 based on 1 and a movable part 24 based on the slide chassis 23.

The fixed chassis 21 is slightly larger than the planar shape of the tape cassette 2 and is in the left-right direction (the leftward direction in FIG. 1 is the left side, and the rightward direction is the right side. The downward direction is referred to as the front side, and the upward direction is referred to as the rear side.
The front and back of the tape cassette 2 are reversed. )
The main portion 25 has a long rectangular flat plate shape, and short guide walls 26 and 26 which are erected from both left and right edges of the main portion 25. The guide walls 26 and 26 extend in the front-rear direction.
6a and 26a are formed. Further, guide struts 27, 27 are provided upright on both left and right sides of the front end of the upper surface of the main portion 25, and the guide struts 27, 27 have a height about one third of the thickness of the tape cassette 2. is doing.

On the upper surface of the main portion 25 of the fixed chassis 21, the head drum 28 is provided at a position close to the rear end of the central portion.
Further, a main motor 29 is fixed to the left side of the head drum 28, and a capstan motor 30 is fixed to the right side of the head drum 28. A capstan 31 is projected upward from the capstan motor 30. There is.

Reference numerals 32 and 32 'are guide members for guiding a moving system path of a tape loading block, which will be described later, and are arranged so as to be substantially in contact with the head drum 28 from the rear, and both are inclined rightward and upward. A fixed tape guide 33 is provided upright on the left end of the left guide member 32.

The head drum 28 is the fixed chassis 2
1 and the fixed drum 28a fixed to the
The rotary drum 28b is rotatably supported by a and the outer peripheral surface of the head drum 28 is supported by the rotary drum 28b while being positioned between the fixed drum 28a and the rotary drum 28b. The magnetic tape 7 comprises a plurality of rotating magnetic heads (not shown)
The rotary drum 2 when recording or reproducing is performed for
8b is rotated at a high speed, and the rotation is performed by a drum motor (not shown).

The remaining portion of the fixed portion 22 will be described later.

The slide chassis 23 is the fixed chassis 21.
The main portion 34 has a flat plate-like shape having substantially the same size as that of the main portion 25, side walls 35, 35 raised from the left and right side edges thereof, and a front wall 36 raised from the front side edge thereof.
Guided grooves 37, 3 extending in the front-rear direction on both left and right sides of
7 are formed, and leg pieces 35a, 35a are vertically provided from the lower edges of the rear end portions of the side walls 35, 35.
Guide pins 38, 38 are provided on 35a so as to project leftward.

The guided pins 38, 38 are slidable in the guide grooves 26a, 26a formed in the fixed chassis 21 and the upper ends of the guide columns 27, 27 erected on the fixed chassis 21. Are slidably engaged with the guided grooves 37, 37 of the slide chassis 23, whereby the slide chassis 23 is at a position slightly higher than the fixed chassis 21 and slides on the fixed chassis 21 in the front-rear direction. Freely supported.

Incidentally, such a slide chassis 23 is
As shown in FIG. 1, a rear end portion of the fixed chassis 21 is moved to a withdrawal position facing the front end portion of the fixed chassis 21, and as shown in FIG. The movement is performed by a moving mechanism (not shown) including the main motor 29 and a cam gear 39 provided on the fixed chassis 21.

A relatively large notch 40 having a substantially U-shape opening rearward is formed at the center of the rear side edge of the main portion 34 of the slide chassis 23.
When is moved to the retracted position, the head drum 28 is positioned in the notch 40 (see FIG. 4).

Reference numeral 41 is an S-side reel stand with which the S reel 8 is engaged, and 42 is a T-side reel stand with which the T reel 9 is engaged. These two reel stands 41 and 42 are gears having a spur gear shape. Parts 43, 43, and substantially disk-shaped reel mounting parts 44, 44 located at a position slightly higher than the gear parts 43, 43,
The reel mounting portions 44, 44 are composed of reel engaging shafts 45, 45 and the like protruding upward from the central portion.

The reel bases 41 and 42 are positioned so that the upper portions of the reel mounting portions 44 and 44 project upward from the main portion 34 of the slide chassis 23, and the axes between them are arranged. It is movably installed so that the distance between them can be increased or decreased.

That is, 46 and 47 are two reel stands 41,
42 is a plate-shaped reel stand lever that supports 42 separately.
These reel base levers 46 and 47 are the slide chassis 2
3 is located at a height slightly lower than the main portion 34, and in the horizontal direction, the main portion 34 is located at a position corresponding to the left half portion and the right half portion of the main portion 34 in the front-rear direction. The end portion is supported by the main portion 34 so as to be rotatable in the substantially left-right direction, and is positioned at the initial position shown in FIG. 1 by the pulling force of the tension springs 48, 48 bridged with the slide chassis 23. Prior to that, when the slide chassis 23 starts moving toward the retracted position, it is moved to the open position where the space between them is wide. This movement is also performed by the moving mechanism having the cam gear 39.

The axial distance between the two reel bases 41 and 42 when the reel base levers 46 and 47 are in the initial position is the same as the standard axial distance, and the open position The axial distance between the reel bases 41 and 42 when moved to is the same as the enlarged axial distance.

Reel stand insertion holes 34a, 34a, which are relatively large and have a long hole shape, are formed in a substantially middle portion between the central portion and the left and right ends of the main portion 34. Portions 41 and 42 above the reel mounting portions 44, 44 project above the main portion 34 through the reel base insertion holes 34a, 34a.

Reference numerals 49 and 49 denote interlocking pins erected on the rotating ends of the reel base levers 46 and 47, which are formed on the main portion 34 of the slide chassis 23.
Elongated holes 34b, 3 extending in an arc shape centered on the rotation fulcrum of
4b is inserted and is projected upward.

A relatively short guide groove 34c is formed at a position on the left side of the notch 40 in the main portion 34 of the slide chassis 23 and extends substantially in the left-right direction, and the right end is open. A support seat 50 is attached to a side position, and a relatively short guide groove 50a having an open left end is formed in the support seat 50, and a second fixing tape guide 51 is erected at a rear end portion thereof. ing.

Reference numerals 52 and 52 'denote tape loading blocks for tape loading, which are composed of guide rollers 53 and 53' and movable inclined guides 54 and 54 ', etc., and are in a state before the slide chassis 23 reaches the retracted position. The left and right guide grooves 34c and 50a are movably supported separately.

Reference numeral 55 is a pinch roller arm having a pinch roller 56 rotatably supported at one end, 57 is a flip arm having a flip guide 58 erected at one end, and 59 is a tenon pin 60 erected at one end. The pinch roller arm 55, the flipper arm 57, and the keypad arm 59 have the other ends rotatably supported by the slide chassis 23 in the initial state,
That is, when the slide chassis 23 is in the pull-out position, as shown in FIG. 1, the pinch roller 56 is located on the right side of the tape loading block 52 'on the right side, and the flip guide 58 is substantially the same as the pinch roller 56. The right side position and the ten-legged pin 60 are held at the left side position of the left tape loading block 52, respectively.

As described above, the reel bases 41, 42, etc. are positioned in the space 61 inside the slide chassis 23, and the space 61 serves as a cassette mounting portion to which the tape cassette 2 is removably mounted. There is.

The mounting and removal of the tape cassette 2 from the cassette mounting portion 61 are performed with the slide chassis 23 in the pull-out position.

When the tape cassette 2 is mounted on the cassette mounting portion 61, the reel engaging shafts 45, 45 of the reel bases 41, 42 relatively move to the hub 1 of the tape reels 8, 9.
2 and 12 are inserted into the reel base engaging holes 12a and 12a,
As a result, the S reel 8 and the T reel 9 are engaged so as to rotate integrally with the S side reel base 41 and the T side reel base 42, respectively.

Further, the interlocking pins 49, 49 provided upright on the reel base levers 46, 47 are individually inserted into the interlocking holes 10b, 10b of the reel holding plates 10, 10, respectively, and the S reel 8
So that the reel holding plate 10 supporting the T reel 9 and the reel holding plate 10 supporting the T reel 9 and the S side reel base lever 46 can move integrally. Will be linked to.

When the tape cassette 2 is mounted in the cassette mounting portion 61, the roller guides 53, 53 ',
The movable tilt guides 54, 54 ', the pinch roller 56, the flip guide 58, and the ten pin 60 are located inside the magnetic tape 7 located on the front surface 3a of the cassette case 3 (see FIGS. 2 and 3).

The lid 14 of the tape cassette 2 is moved to the open position by the operation of closing a cover (not shown) that opens and closes the upper surface of the cassette mounting portion 61, and the cassette case 3 slides when the cover is closed. It is crimped onto the upper surface of the main portion 34 of the chassis 23.

The tape cassette 2 is mounted on the cassette mounting portion 61 as described above.

Therefore, when a command for retracting the slide chassis 23 is issued, first, the reel base lever 46,
After 47 is moved to the open position together with the reel holding plates 10 and 10 to increase the distance between the two tape reels 8 and 9, the slide chassis 2 is moved to the retracted position.

By this movement, the head drum 28 is inserted into the mouth portion 13 of the cassette case 3, the front end portion of the head drum 28 is located between the two tape reels 8 and 9, and the head drum 28 is also moved. The magnetic tape 7 is wound around the portion of the outer peripheral surface of the roller guide 53, 53 ′, the first fixed tape guide 33, the second fixed tape guide 51, and the capstan 31 which face substantially forward.

When the slide chassis 23 reaches the retracted position, the guide groove 34 on the left side of the slide chassis 23 is placed.
c and the guide groove 32a formed in the guide member 32 provided in the fixed chassis 21, the guide groove 32a formed in the guide groove 50a of the slide chassis 23 and the guide member 32 'provided in the fixed chassis 23. ´a
Each is consecutive.

From this state, the left loading block 52 passes through the left guide grooves 34c-32a, and the right loading block 52 'passes through the right guide groove 50a-3.
After passing through 2'a, the head drum 28 is moved to a loading completion position substantially right behind the head drum 28, respectively.

Then, when the slide chassis 23 starts moving toward the retracted position, the guide arm 57, which is not shown, provided on the fixed chassis 21 rotates the slide chassis 23 to the rearward direction, whereby the slide guide 58 is magnetically guided. The tape 7 is wrapped around it, and the tension arm 59
When it is released from its initial position, it is rotated substantially backward by the pulling force of a tension spring (not shown), whereby the magnetic tape 7 is wound around the ten-legged pin 60, and the rotational force urged by the ten-legged pin 60 is increased. Due to this, an appropriate tension is applied to the magnetic tape 7.

Further, the pinch roller arm 55 is rotated rightward by a cam (not shown) provided on the fixed chassis 21 at substantially the same time when the slide chassis 23 reaches the retracted position, whereby the slide chassis 23 is retracted. The pinch roller 56 is pressed against the capstan 31 with the magnetic tape 7 in between at almost the same time as it reaches the position.

The above-mentioned state is the tape loading completion state, and in this state, the magnetic tape 7 is passed through a required path. That is, in this state, the magnetic tape 7 comes out of the S reel 8 and then the guide 6 in the cassette on the left side-the ten pin pin 60-
First fixed tape guide 33-roller guide 53-moving tilt guide 54-head drum 28-moving tilt guide 5
4'-roller guide 53'-second fixing tape guide 5
1-Capstan 31-Flider guide 58-Passes through the guide 6 in the cassette on the right side in this order to reach the T reel 9, and is wound around the outer peripheral surface of the head drum 28 in a spiral shape.

Recording or reproduction with respect to the magnetic tape 7 is performed by moving the magnetic tape 7 from this state by the capstan 31 and the pinch roller 56 and rotating the rotating portion of the head drum 28.

Reference numeral 62 denotes a swing lever provided substantially in the center of the front end portion of the upper surface of the fixed chassis 21. An idler gear 63 that is rotated by transmitting the rotation of the capstan motor 30 is supported at the rotation end portion thereof. When the magnetic tape 7 is running, the idler gear 63 is meshed with the gear part 43 of the T-side reel stand 42 or the gear part 43 of the S-side reel stand 41 according to the running direction of the magnetic tape 7, whereby the T reel 9 or S reel 8 is rotated in the tape winding direction.

When the tape cassette 2 is taken out, the slide chassis 23 is moved to the pull-out position and
Tape unloading, that is, winding of the tape on the tape reel is performed. That is, in this case, first, the tape loading blocks 52, 52 'are moved to the guide grooves 34c, 50a side of the slide chassis 23 and returned to the slide chassis 23, and then the slide chassis 23 is returned to the pull-out position. As a result, the head drum 28 goes out of the mouth portion 13 of the tape cassette 2 and the pinch roller 56, the slide guide 58, and the dowel pin 60.
Is returned to its initial position. Then, the S reel 8 is rotated in the tape winding direction at the same time when the movement of the tape loading blocks 52 and 52 'is started, whereby the magnetic tape 7 is wound around the S reel 8 without slack.

Tape loading and tape unloading by the video tape recorder 1 are performed as described above.

Reference numeral 64 is a circuit board (see FIG. 3) fixed to the lower surface of the fixed chassis 21, and most of the circuits necessary for controlling the operation of the video tape recorder 1 are provided on this circuit board 64. ..

Reference numeral 65 denotes a tape information detecting mechanism for detecting information on the magnetic tape 7 by detecting whether or not the discrimination holes 15, 16 and 17 of the cassette 2 are opened. Is the discrimination hole 1
The discriminator comprises three discriminators whose positions differ depending on whether or not 5, 16 and 17 are opened, and a detection switch for detecting the position of the discriminator. The discriminator is provided on the slide chassis 23 and the detection switch is fixed. It is provided on the chassis 21. The tape information detecting mechanism 65 will be described below.

Reference numeral 66 is an elastic plate made of a leaf spring material,
A mounting portion 67 forming a rear end thereof and three elastic pieces 68, 69 and 70 projecting forward from the mounting portion 67,
These three elastic pieces 68, 69 and 70 are positioned so as to be arranged in parallel in the left-right direction, and their front end portions 68a,
The positional relationship between 69a and 70a is the same as the positional relationship between the three discrimination holes 15, 16 and 17.

The elastic plate 66 has its mounting portion 67 fixed to the lower surface of the main portion 34 of the slide chassis 23 so that the elastic pieces 68, 69 and 70 can bend in the vertical direction. It is provided.

That is, 71 is a fixing member having substantially the same outer shape and size as the mounting portion 67, and the fixing member 71 has insertion holes 71a, 71a formed therein and an insertion hole 67a formed in the mounting portion 67. , 67a are inserted in this order from below, and are fixed to the main portion 34 by being screwed into screw holes (not shown) formed in the main portion 34.
As a result, the mounting portion 67 of the elastic plate 66 is fixed to the slide chassis 23.

The elastic plate 66 is arranged at the right end of the front end of the lower surface of the main portion 34, and the front ends 68a, 69a, 70a of the elastic pieces 68, 69, 70 are mounted on the cassette mounting portion 61. Discriminating holes 15 of the tape cassette 2 of
It is located at a position corresponding to 16 and 17, respectively.

34d and 34e are insertion holes formed in the main portion 34, and when viewed from above, the three elastic pieces 68, 69 are provided.
Of 70 and 70, the front end portion 68a of the elastic piece 68 at the right end and the front end portion 69a of the elastic piece 69 at the center are located at positions corresponding to the insertion holes 34d on the right side, and the front end portion 70a of the other elastic piece 70 is at the left side. It is located at a position corresponding to the insertion hole 34e (see FIG. 6).

Reference numerals 73, 74 and 75 are pressing members attached to the front ends 68a, 69a and 70a of the elastic pieces 68, 69 and 70, respectively. These pressing members 73, 74, and 75 are for pressing three pressed members of a detection switch, which will be described later, respectively, and have a rectangular block shape that is long in the front-rear direction when viewed from above, and the lower surface thereof. It is provided with pressing legs 73a, 74a, and 75a protruding from.

Pressed pins 76, 77 and 78 are provided on the upper surfaces of the pressing members 73, 74 and 75, respectively, and these pressed pins 76, 77 and 78 have a slender conical shape. And is projected into the cassette mounting portion 61 through the insertion holes 34d and 34e.

Then, the elastic piece 68 at the right end of the elastic plate 66.
One discriminator 79 (hereinafter, referred to as “first discriminator”) is configured by and the pressing member 73 attached thereto, and the central elastic piece 69 and the pressing member attached thereto. Another discriminator 80 (hereinafter, referred to as “second discriminator”) is configured by the member 74, and the elastic side piece 7 at the left end is formed.
Another discriminator 81 (hereinafter, referred to as a third discriminator) is also configured by 0 and the pressing member 75 attached thereto.

Then, these discriminators 79, 80, 81
While the pressed pins 76, 77, 78 are not pressed downward, as shown in FIG.
8, 69 and 70 are in a horizontal posture, and the pressing leg 73
a, 74a, 75a are held in a non-pressed position located above an intermediate portion in the vertical direction between the fixed chassis 21 and the slide chassis 23, and the pressed pin 7
When 6, 77, 78 are pressed, elastic pieces 68, 69,
The bending of 70 causes the first discriminator 79 shown in FIG.
As described above, the pressing legs 73a, 74a, 75a are moved to the pressing positions located below the intermediate portion.

The discriminators 79, 80 and 81 are moved to the pressing positions when the discriminating holes 15, 16 and 17 of the tape cassette 2 are closed. That is, when the tape cassette 2 is mounted in the cassette mounting portion 61, if the first discrimination hole 15 is opened, the pressed pin 76 is relatively projected into the cassette case 3 through the discrimination hole 15. As a result, the first discriminator 79 remains in the non-pressed position, but when the discrimination hole 15 is closed, the pressed pin 7 is pressed.
Since 6 is pressed downward by the pointing member 18, the first discriminator 79 is moved to the pressing position.

Similarly, when the tape cassette 2 is mounted in the cassette mounting portion 61, the second discriminating hole 1
When 6 is open, the pin to be pressed 77 is the judgment hole 1
The second discriminator 80 remains in the non-pressed position by being relatively projected into the cassette case 3 through 6, but when the discrimination hole 16 is closed by the closing lid 20, it is covered by the closing lid 20. Since the pressing pin 77 is pressed downward, the second discriminator 80 is moved to the pressing position, and further,
When the third determination hole 17 is open, the pressed pin 7
Although the third discriminator 81 remains in the non-pressed position as a result of 8 being relatively projected into the cassette case 3 through the discrimination hole 17, if the discrimination hole 17 is closed by the closing lid 20 ', the third discriminator 81 is not covered. Since the pressing pin 78 is pressed downward by the closing lid 20 ', the third discriminator 81 is moved to the pressing position.

Reference numeral 82 is a detection switch for detecting the positions of the discriminators 79, 80 and 81. The detection switch 82 is a multiple push switch, and its case 8
3 pressed elements 8 that are elastically urged in a direction projecting from 3
4, 85, 86, the pressed elements 84, 85, 86 are arranged in the left-right direction, and the front end right end of the upper surface of the main portion 25 of the fixed chassis 21 in a direction projecting forward from the case 83. The first discriminator 7 is attached to the first discriminator 7 in a state in which the pressed element 84 at the right end when viewed from the front-rear direction (hereinafter, referred to as “first pressed element”) is moved to the pressing position.
The pressed member 85 at the center (hereinafter, referred to as “second pressed member”) that faces the pressing leg 73 a of the second discriminator 80 is the second discriminator 80.
Of the pressing member 74a of the left end and the pressing member 74a of the
(Hereinafter, referred to as “third pressed element”.) Faces the pressing leg 75 a of the third discriminator 81.

Then, the pressed element 8 of the detection switch 82
The terminals (not shown) that are individually opened and closed by 4, 85 and 86 are connected to the circuit on the circuit board 64 through the flexible wiring board (not shown) whose position is fixed to the fixed chassis 21.

The detection of the tape information by the tape information detecting mechanism 65 is performed as follows.

When the slide chassis 23 is moved to the retracted position with the tape cassette 2 mounted, the pressed elements 84, 85, 86 of the detection switch 82 are the discriminators corresponding to the pressed elements when they are in the pressed position. Is pressed by.

That is, when the first discriminating hole 15 is closed by the indicating member 18, the first discriminator 79 is moved to the pressing position at the same time when the tape cassette 2 is mounted (this state is shown in FIG. 8). Since the slide chassis 23 reaches the retracted position, the pressing leg 73a of the discriminator 79 presses the first pressed member 84 (see FIG. 9). On the contrary, when the first discriminating hole 15 is opened, the first discriminator 79 is left in the non-pressed position even when the tape cassette 2 is mounted.
Even when the slide chassis 23 is moved to the retracted position, since the discriminator 79 is located above the detection switch 82 as shown by the chain double-dashed line in FIG. 7, it does not press the pressed member 84.

Then, similarly to this, the second discrimination hole 16
When the tape cassette 2 is closed by the closing lid 20, the second discriminator 80 moves to the pressing position at the same time when the tape cassette 2 is mounted, so that when the slide chassis 23 reaches the retracted position, the discriminator 80 moves. The pressing leg 74a presses the second pressed member 85, and conversely, the closing lid 20
When the discriminator 80 is removed and the discriminating hole 16 is open, the discriminator 80 is left in the non-pressed position, and in this case, the discriminator 80 is moved in the retracted position when the slide chassis 23 is moved to the retracted position. As shown by the two-dot chain line in FIG.
Since it is located above the detection switch 82, the pressed member 85 is not pressed.

The same applies to the third discriminator 81.
That is, when the third discriminating hole 17 is closed by the closing lid 20 ', the third discriminator 81 is moved to the pressing position by mounting the tape cassette 2, so that the slide chassis 23 reaches the retracted position. At the same time, the pressing leg 75a of the discriminator 81 presses the third pressed member 86, and conversely, if the closing lid 20 'is removed and the discrimination hole 17 is opened, the discriminator is discriminated. Since 81 is left in the non-pressed position, in this case, the discriminator 81 is located above the detection switch 82 when the slide chassis 23 is moved to the retracted position, and therefore presses the pressed member 86. There is no such thing.

Therefore, the pressed element 8 of the detection switch 82
The switch circuits corresponding to 4, 85, and 86 respectively output different signals when the pressed element is pressed and when it is not pressed, and the control circuit detects the signal to detect the magnetic tape 7. The instruction content of recording permission / prohibition, the type of tape, etc. are detected, and a predetermined control operation is performed according to the detection result.

FIG. 11 shows a first modification 87 of the tape information detecting mechanism 65.

The tape information detecting mechanism 87 differs from the tape information detecting mechanism 65 only in the structure of the discriminator. Therefore, only the main parts are shown in the drawings, and the description is given only for the above-mentioned differences, and the other parts are the same as the reference numerals given to the same parts in the tape information detecting mechanism 65 in the respective parts of the drawing. The description is omitted by attaching the reference numerals. The relationship between the use of the reference signs and the omission of the description is the same in the second modified example described later.

Reference numeral 88 is a discriminator having a shaft shape, and a flange-shaped stopper 88a is formed at a substantially intermediate portion thereof.

Reference numeral 89 denotes a support member that supports the discriminator 88 slidably in the axial direction thereof, and has a cylindrical support portion 90 having an open upper surface and a flange-shaped mounting portion protruding outward from the upper end portion thereof. The mounting portion 91 is fixed to the lower surface of the main portion 34 of the slide chassis 23, an insertion hole 90a is formed in the center of the bottom wall of the support portion 90, and the bottom surface of the support portion 90 is It is located above the detection switch 82 when viewed from the front-rear direction.

Reference numeral 92 is an insertion hole formed in the main portion 34 of the slide chassis 23.

The discriminator 88 has its stopper 88a.
From above to the insertion hole 92 of the slide chassis 23,
The lower end portions are slidably inserted into the insertion holes 90a of the support member 89 to be supported movably in the vertical direction, and the bottom wall of the support member 89 and the stopper 88 are supported.
As shown by the solid line, the stopper 88a is in contact with the main portion 23 while the upward moving force is applied by the elastic force of the coil spring 93 that is contracted between the stopper 88a and a. And is prevented from moving upward, and its lower end is held in a non-pressed position where it does not project downward from the support member 89.

When the tape cassette 2 is loaded and the discrimination hole corresponding to the discriminator 88 is opened, the discriminator 88 remains in the non-pressed position and the discrimination hole is closed. In this case, it is displaced downward as shown by the chain double-dashed line so that its lower end projects downward from the bottom surface of the support member 89 and is located at a height facing the pressed element of the detection switch 82. At the same time when the chassis 23 reaches the retracted position, the lower end of the discriminator 88 presses the pressed member of the detection switch 82.

Although only one discriminator 88 is shown in the drawing, the same number of discriminator holes is actually provided in the tape cassette 2.

FIG. 12 shows a second modification 94 of the tape information detecting mechanism.

Reference numeral 95 is a discriminator made of a conductive leaf spring material, and its rear end portion 95a is fixed to the lower surface of the main portion 34 of the slide chassis 23 and its front end portion is bifurcated 95b. , 95b, a pressed pin 96 is erected at a position near the front end portion, and the pressed pin 96 is projected upward through an insertion hole 97 formed in the main portion 34, When the pressing pin 96 is not pressed downward, it is held in the horizontal non-pressing position as shown by the solid line.

Reference numeral 98 denotes a circuit board attached to the upper surface of the main portion 25 of the fixed chassis 21, and 99a and 99b denote the circuit board 9.
8 is a pair of detection conductors provided on the upper surface of 8, and the front end portions of the detection conductors 99a and 99b are left and right fingers of the front end portion of the discriminator 95 when viewed from above when the slide chassis 23 comes to the retracted position. It is arranged at a position corresponding to each of the pieces 95b, 95b.

Therefore, when the tape cassette 2 is loaded and the discrimination hole corresponding to the discriminator 95 is opened, the discriminator 95 remains in the non-pressed position. In this case, the slide chassis 23 is moved to the retracted position. Discriminator 9 even if moved
5 does not contact the sensing conductors 99a and 99b and is therefore left open between these sensing conductors 99a and 99b. When the discrimination hole is closed, the discriminator 95 is bent downward as shown by the chain double-dashed line so that its front end is located at substantially the same height as the upper surface of the circuit board 98,
Therefore, at the same time when the slide chassis 23 reaches the retracted position, the two finger pieces 95b, 95b of the discriminator 95 individually contact the detection conductors 99a and 99b to close them.

In the control circuit, therefore, the tape information relating to the discrimination hole is detected by detecting whether or not the space between the conductors 99a and 99b is closed.

[0102]

As is apparent from the above description, the tape player of the present invention is equipped with a tape cassette for displaying information regarding the tape depending on whether or not a discrimination hole is formed at a predetermined position of the cassette case. In a tape player, a slide chassis having a cassette mounting portion is slidably supported by a fixed chassis equipped with recording / reproducing means, and the operation for the tape is performed while the slide chassis is moved to a retracted position substantially overlapping the fixed chassis. Therefore, a discriminator whose position is different depending on the presence or absence of the discriminant hole is provided in the cassette mounting portion, and the fixed chassis is provided with detection means for electrically detecting the position of the discriminator when the slide chassis comes to the retracted position. And

Therefore, in the tape player of the present invention, the discriminator and the detecting means for detecting the presence / absence of the discriminating hole of the tape cassette should perform the operation with respect to the tape when the slide chassis is in the retracted position. When it comes to a state in which it is possible to operate, it is possible to correspond to each other and to function, so the detection function is not impaired, and since the detection means is provided in the fixed chassis, the presence or absence of the discrimination hole Since the connecting means for connecting the circuit board having the detection circuit and the detecting means does not need an extra length, and the position can be fixed to the fixed chassis, the wiring processing is performed. Also, since the connection means is not stressed, the reliability of the operation can be improved, and moreover, it can be placed around the movement track of the slide chassis. It is not necessary to provide a space of use, which makes it possible to reduce the size of the tape player.

The structure or shape of the discriminator, the detecting means and other parts shown in the above embodiment, the type of the tape player and the shape of the discriminating hole of the tape cassette, etc. are embodied in carrying out the present invention. They are merely examples, and the technical scope of the present invention should not be limitedly interpreted by these.

[Brief description of drawings]

FIG. 1 shows an example in which the tape player of the present invention is applied to a video tape recorder together with FIGS. 2 to 12. This figure is a plan view showing the entire video tape recorder when the slide chassis is in the pull-out position. It is a figure.

FIG. 2 is an enlarged perspective view showing a main part of a video tape recorder.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG.

FIG. 4 is an enlarged plan view showing the video tape recorder in a state where the slide chassis has come to the retracted position and the tape loading is completed, with the tape cassette being horizontally cut.

FIG. 5 is an enlarged perspective view showing an exploded main part of the tape information discriminating mechanism.

FIG. 6 is a plan view of an essential part showing an enlarged tape information discriminating mechanism.

7 is a cross-sectional view taken along the line VII-VII of FIG.

FIG. 8 is an enlarged side view showing a tape information discriminating mechanism with a tape cassette mounted in a cassette mounting portion with a part cut away.

FIG. 9 is an enlarged side view showing a tape information discriminating mechanism in which a slide chassis having a tape cassette mounted therein is moved to a retracted position with a part thereof cut away.

FIG. 10 is an enlarged perspective view showing a state where a main part of the tape cassette is partially disassembled.

FIG. 11 is a vertical sectional view of an essential part showing a first modification of the tape information detecting mechanism.

FIG. 12 is a perspective view of essential parts showing a second modification of the tape information detection mechanism.

[Explanation of symbols]

 1 Tape player 2 Tape cassette 3 Cassette case 7 Tape 15 Discrimination hole 16 Discrimination hole 17 Discrimination hole 21 Fixed chassis 23 Slide chassis 28 Recording / reproducing means 61 Cassette mounting section 79 Discriminator 81 Discriminator 82 Detecting means 88 Discriminator 95 Discriminator 99a, 99b detecting means

Claims (1)

Claim: What is claimed is: 1. A slide chassis having a cassette mounting portion for mounting a tape cassette, which displays information about a tape depending on whether or not a discrimination hole is formed at a predetermined position of the cassette case. The tape player is slidably supported by a fixed chassis provided with a tape player, etc., and operates with respect to the tape while the slide chassis is moved to a retracted position that substantially overlaps with the fixed chassis. A discriminator is provided in the cassette mounting part,
A tape player, characterized in that a fixed chassis is provided with detection means for electrically detecting the position of the discriminator when the slide chassis reaches the retracted position.