JPS6185655A - Tape recorder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a novel tape recorder. For more information,
A video tape recorder (hereinafter referred to as rVTRJ) or an audio tape recorder (hereinafter referred to as FAT'RJ) that uses so-called cassette type magnetic tape.
A recording and reproducing unit equipped with a mechanism necessary for reproducing during recording on &i magnetic tape is slidably supported in an outer casing, and a tape cassette is attached to and removed from the recording and reproducing unit by the recording and reproducing unit. By pulling it forward from the outer casing, the shape can be made thinner, and when the tape recorder is not in use, the recording/playback section is always in the retracted position inside the outer casing. The present invention aims to provide a new tape recorder that can be used in a variety of ways, and that has improved functionality as well as safety of the recording and reproducing section.

BACKGROUND OF THE INVENTION Recently, most tape recorders, both VTR and ATR, use tape cassettes, which consist of a tape reel wound with magnetic tape housed in a roughly box-shaped cassette housing. It has become.

When using a tape recorder that uses a tape cassette, the tape cassette is attached to the recording/playback section of the tape recorder.
In R, the tape cassette needs to be mounted in a predetermined mounting position of the recording/reproducing section in a precisely positioned state. For this reason, VTRs are generally provided with a cassette loading mechanism for loading the tape cassette into a predetermined mounting position.

Conventionally, there are two types of cassette loading mechanisms: a so-called top-loading mechanism in which the tape cassette is loaded from above the outer casing, and a so-called front-loading mechanism in which the tape cassette is loaded from the front side of the outer casing.

In other words, in the top-loading type, the cassette holding member into which the tape cassette is inserted is supported in the outer casing so as to be movable in the vertical direction, and when inserting and removing the tape cassette, the cassette holding member is moved upward from the outer casing. The tape cassette is inserted into the protruding cassette holding member and pressed from above, so that the tape cassette is mounted at the mounting position of the recording/reproducing section.

In addition, in the front loading type, an opening for inserting a cassette is formed on the front of the foreign bond, and a gap between the position directly behind the opening and the position behind and below this opening is formed. A movable cassette carrier is provided, and the tape cassette inserted into the outer casing from the cassette insertion slot is moved by the cassette carrier to a mounting position along a substantially upside-down trajectory. .

Note that a front-loading cassette coding mechanism may also be used in ATR.

Also, although it is not a so-called cassette loading mechanism, it is an AT
In R, for example, as in the tape recorder disclosed in Japanese Utility Model Publication No. 58-55763, the recording/reproducing unit itself is slidably supported in the outer casing, and the loading and unloading of the tape cassette from/to the recording/reproducing unit is performed by the recording/reproducing unit. Some devices are designed to perform this operation with the section pulled out from the outer casing.

Problems to be Solved by the Invention In a tape recorder using a tape cassette, there are various methods for mounting the tape cassette in the recording/reproducing section, as described above. Among these, the top-loading method has the advantage of being able to make the foreign bonds thinner, but it also has the problem of making it difficult to effectively use the space above the outer casing, and severely restricting the space where it can be placed. be. Front-loading models also have video equipment, speakers, etc. on the outer casing.
This has the advantage that the space above the outer casing can be used effectively, but it is necessary to include the vertical movement stroke of the cassette carrier in the height of the outer casing. , there is a problem that the outer casing has to be quite thick.

Therefore, in order to make the outer casing thinner and to make effective use of the space above the outer casing,
It is considered that it is better to support the recording and reproducing section in a slidable manner in the outer casing, and to attach the tape cassette to the recording and reproducing section by pulling the recording and reproducing section out of the outer casing.

By the way, if the recording and reproducing section is supported in a slidable manner by the outer casing, even after the use of the tape recorder is finished,
There is a risk that the recording/reproducing unit may be left unattended while being pulled out from the outer casing.

As is known, the recording and reproducing parts of VTRs and ATRs are processed with extremely high precision, or! It is composed of a large number of well-aligned parts, and especially if dust, moisture, or oily substances adhere to the head member or tape guide member, the reproduction characteristics during recording will deteriorate significantly.

However, if such a recording/reproducing section is left pulled out from the outer casing, it is inevitable that the performance of the recording/reproducing section will deteriorate significantly.

Furthermore, if the recording/reproducing section is pulled out from the outer casing, there is a good chance that something will be thrown at it, or that children, especially young children, will play pranks on it.

Means for Solving the Problems Therefore, in order to solve the above-mentioned problems, the video tape recorder of the present invention includes a recording and reproducing section provided with a mechanism necessary for recording and reproducing on a tape in the outer casing. The recording and reproducing section is supported so as to be slidable and can be moved between a retracted position where the recording and reproducing section is pulled into the outer casing and one or more positions where the recording and reproducing section is pulled out outside the outer casing. If the switch is operated to cut off the power while the is in a position other than the retracted position,
The apparatus is characterized in that the power is turned off after the recording/reproducing section is moved to the retracted position.

According to the present invention, when the tape recorder is not in use, the recording and reproducing section is always in a safe position retracted into the outer casing.

EMBODIMENTS The details of the tape recorder of the present invention will be explained below according to embodiments shown in the accompanying drawings. In the embodiment shown in the first drawing, the tape recorder of the present invention is applied as a video tape recorder.

In the drawings, 1 is a VTR, and 2 is its outer casing. The outer casing 2 is formed in a substantially thin box shape, and the left side of the front panel 3 (the direction diagonally upward to the left in FIG. 1 is the left side, and the direction diagonally downward to the right is the right side. The direction diagonally downward is defined as the front side, and the direction diagonally upward to the right is defined as the rear side.In the following explanation, directions will be referred to in this direction. Mechanical chassis 4 provided
A chassis draw-out opening 5 is formed for pulling out the chassis from the outer casing 2. Reference numeral 6 denotes a movable panel fixed to the front end of the mechanical chassis 4. The movable panel 6 is formed to have approximately the same size as the chassis drawer opening 5, and the mechanical chassis 4 is attached to the outer casing as shown in FIG. 2 (hereinafter, this position is referred to as the "retracted position"), the chassis drawer opening 5 is moved to the position shown in FIG.
As shown in the figure, it is closed by this movable panel 6.

Although not shown, inside the outer casing 2 is a system controller consisting of a storage device and a control device that store various control programs, etc., which will be described later, and a system controller that is necessary to control the operation of the VTR1. Other equipment is provided. In addition, an operation section with a large number of operation buttons is provided on the right side of the front panel 3.
This operation section will be described later.

The mechanical chassis 4 (see Fig. 5, Fig. 7, Fig. 11, etc.) is formed into a substantially square plate shape, and guide rails provided at both left and right ends are guides fixed to two sides of the outer casing. By being slidably engaged with rollers, it is supported so as to be slidable in the front and rear directions with respect to the outer casing 2.

That is, 7.7' is a guide rail fixed along both left and right edges of the lower surface of the mechanical chassis 4, and the guide rail 7.7' has a substantially angular C-shape when viewed from the front and rear directions. and are arranged so that the openings of the letter 0 face each other outward. 8.8 and 8'
, 8' are guide rollers which are arranged in pairs at positions close to both the left and right opening edges of the chassis drawer opening 5 inside the outer casing 2, with a certain distance from each other in the front and rear direction. 8, 8', and 8' are rotatably supported at the tips of roller shafts 9.9, (9'), and (9') (only the one on the right side is shown in the drawing) fixed to the outer casing. has been done. Thus, the opening edges of the C-shaped openings of the guide rails 7 and 7' provided in the mechanical chassis 4 are slidably engaged with the guide rollers 8.8 and 8', 8'. As a result, the mechanical chassis 4 is supported so as to be slidable in the front and rear directions with respect to the outer casing 2, and is not pulled out of the outer casing 2 without being guided in the sliding direction by guide rollers 8.8, 8', and 8'. It is also configured such that it can be drawn into the outer casing 2 from the pulled out position.

Reference numeral 10 (see FIG. 7) is a recording/reproducing unit provided in the mechanical chassis 4, and the recording/reproducing unit 10 includes members or members necessary for recording and reproducing the 16% tape of a tape cassette, which will be described later. A mechanism is provided.

That is, 11 and 11' are reel stands placed near the front edge of the mechanical chassis 4 at a predetermined distance from each other in the left and right direction, and these reel stands 11 and 11' are rotated by a reel shaft (not shown). They are freely supported and each has an engagement shaft 12, 12' at its upper end.

13. 13, 13', and 13' are positioning pins arranged near both left and right edges of the front part of the mechanical chassis 4;
From the upper end surface of 3' are approximately conical insertion portions 13'a, 13'.
A is provided protrudingly. In addition, these positioning pins 13.1
3 and 13', 13' are for positioning the tape cassette to be loaded into the recording/reproducing section 10.

Reference numeral 14 denotes a head drum disposed near the rear edge of the mechanical chassis 4, and a video head (not shown) is provided on the rotating drum 14a.

Although most of the mechanisms necessary for recording and reproducing are omitted in the first drawing, in reality, in addition to the above-mentioned members, an audio head and a control head are also installed on the top surface of the mechanical chassis 4. and a head member such as a full-width erase head, a large number of tape guide posts for regulating the travel path of the magnetic tape, a tape loading mechanism for pulling out the magnetic tape from the tape cassette and winding it around the head member, tape guide post, etc., and magnetic tape. A capstan, a pinch roller, etc. for running the tape at a predetermined speed are provided, and the lower surface of the mechanical chassis 4 is provided with a rotating side drum 14a of the head drum, a capstan, and the reel stand 11.11. A motor, a transmission mechanism, a servo mechanism, and the like are provided to rotate the parts.

In this VTRI, the recording/reproducing unit 10 itself is supported in a slidable manner relative to the body 2, and when the mechanical chassis 4 is pulled out of the outer casing 2, As shown in FIG. 6, the recording/reproducing section 10 is pulled out from the outer casing 2.

Next, a slide mechanism for sliding the mechanical chassis 4 will be explained (see FIGS. 4 to 7!!Q).

Reference numeral 15 denotes a guide member disposed in the outer casing 2 at a position slightly closer to the right side than above the right side edge of the mechanical chassis 4, and a mounting member 1 (not shown) is fixed to the outer casing 2 side by a member. The guide member 15 is arranged so as to be held in the front-rear direction, and has a substantially horizontally bent J-shape when viewed from the side, from a position slightly closer to the front than the rear end to the front end. A slit-shaped guide portion 16 is formed. Then, the guide section 16 extends from the rear end of the guide section 16 to the front panel 3 of the outer casing 2.
It consists of a chassis guide part 16a that extends in a substantially horizontal direction to a position close to the chassis guide part 16a, and an arm guide part 16b that extends in a substantially vertical direction continuously from the front end of the chassis guide part 16a toward the top plate side of the outer casing 2. A continuous portion 16c between the chassis guide portion 16a and the arm guide portion 18b is formed to extend in a substantially arc shape. A rack 17 is formed on the lower surface of the guide member 15 between a position slightly rearward from the front end and the rear end.

The guide portion 16 of the guide member 15 described above is for guiding the moving direction of the control pin, which will be described later.

18 (see FIG. 9) is a gear shaft rotatably supported by a bearing member (not shown) provided on the mechanical chassis 4;
The gear shaft 18 is arranged so that its tip protrudes from the mechanical chassis 4 to the right side, and has a
A chassis moving gear 19 meshed with the rack 17 is fixed.

Incidentally, the chassis moving gear 19 is rotated by a motor to be described later.

Thus, the mechanical chassis 4 is slid by rotating the chassis moving gear 19. That is,
When the moving gear 19 is rotated clockwise from the state where the mechanical chassis 4 is in the retracted position shown in FIG.
The moving gear 9 is moved forward while engaging with the rack 17, and thereby the mechanical chassis 4 is moved forward. Also, mechanical chassis 4! The position shown in Figure 1R1 and Figure 5 (hereinafter, this position will be referred to as the "drawer position").

Alternatively, when the chassis moving gear 19 is rotated counterclockwise from the position shown in FIGS. 3 and 6 (hereinafter, this position is referred to as the r half-drawn out position J), the moving gear 19 is moved rearward while engaging with the rack 17, and thereby the mechanical chassis 4 is moved rearward.

Reference numeral 20 denotes a cassette attachment/detachment mechanism (see FIG. 8). This cassette attachment/detachment mechanism 20 is used to attach a tape cassette, which will be described later, to the cassette attachment position of the recording/reproducing section 10, and also to remove a layer from the cassette attachment position. It is a mechanism.

That is, reference numerals 21 and 22 are main rotating arms that are arranged near the rear end edge of the portion along both left and right edges of the mechanical chassis 4, and are arranged so that their side surfaces correspond to each other parallel to each other. .

The right main rotating arm 21 has an intermediate portion in the front-rear direction bent into a substantially crank shape when viewed from above, and a front portion 23 thereof is formed wide in the vertical direction. A long hole 24 extending along the longitudinal direction of the main rotating arm 21 is formed in the lower part. Reference numeral 25 denotes a protrusion protruding forward from the front edge of the front portion 23, and the front end of the protrusion 25 is bent toward the left at a substantially right angle, and a spring engagement hole 26 is formed at its tip. has been done. Further, reference numeral 27 denotes a regulating pin that protrudes toward the left side from a position slightly toward the rear of the middle portion of the left side surface of the main rotating arm 21 .

In addition, the left main rotating arm 22 has a rear portion 28 in its longitudinal direction that is wide in the vertical direction, and
A front portion 29 having a narrow width in the vertical direction is integrally formed from a position closer to the front end of the lower edge of the portion 8 . And the front part 29
The front end of the spring is bent toward the right at a substantially right angle, and a spring engagement hole 30 is formed in the bent portion. Further, reference numeral 31 denotes a regulating pin protruding from the left side surface of the rear portion 28 toward the left side.

Reference numerals 32 and 32 denote support pieces that are erected at both left and right ends of the upper surface of the mechanical chassis 4 along the rear edge, and both ends of the interlocking shaft 33 are rotatable at the upper ends of the support pieces 32 and 32. freely supported.

The rear ends of the left and right main rotating arms 21 and 22 are fixed to both ends of the interlocking shaft 33, so that the main rotating arms 21 and 22 are rotated vertically by the mechanical chassis 4. While being supported so that it can move freely,
They are connected to each other by an interlocking shaft 33 so as to rotate integrally with each other.

Further, 34 and 35 are sub-swivel arms, and these sub-swivel arms 34 and 35 are provided so as to be rotated substantially integrally with the above-described main swing arms 21 and 22, respectively. The right side sub-rotation arm 34 and the left side sub-rotation arm 35 are each formed substantially symmetrically. That is, the sub-swivel arms 34 and 35 are formed into a plate shape that is long in the front-rear direction, and are located at approximately the center portions of the main swing arms 21 and 22 in the spring engagement holes 26 and 22 of the main swing arms 21 and 22, respectively. A portion corresponding to 30 is bent into a substantially crank shape when viewed from above.

A projecting piece 37, 37 is formed at the upper end edge of the bent portion, projecting forward and having spring engaging holes 36, 36 formed therein. Of the sub-rotating arms 34 and 35, the main rotating arms 21 and 22
Elongated holes 38 and 38 are formed in the stacking vertical direction at positions corresponding to the regulating pins 27 and 31 protruding from the stack.
Also.

Insertion holes 39, 39 are formed at the rear end of each.

Thus, the right side sub-rotating arm 34 has a portion of the right end of the interlocking shaft 33 to the left of the portion to which the main rotating arm 21 is fixed inserted into the insertion hole 39.
Further, the left side sub-rotating arm 35 is rotatably supported by the interlocking shaft 33 by inserting the left end of the interlocking shaft 33 into the insertion hole 39 thereof.

The tips of the regulating pins 27 and 31 protruding from the main rotating arms 21 and 22 are attached to the sub rotating arms 34 and 35.
is slidably engaged with the elongated holes 38 and 38, and is pulled into the spring engaging hole 26 of the right main rotating arm 21 and the spring engaging hole 36 of the protrusion 37 of the right side sub rotating arm 34. Hooks provided at both ends of the spring 40 are engaged, and the spring engagement hole 30 of the left main rotation arm 22 and the spring engagement hole 36 of the left sub-rotation arm 35 are engaged.
Hooks provided at both ends of the tension spring 40' are engaged with the tension spring 40'. As a result, the secondary rotation arms 34 and 35
and the main rotating arms 21 and 22 are tension springs 40
and 40' are drawn to each other by the tensile force of the main rotating arms 21 and 22, and
and 31 are elongated holes 3B and 38 of the sub-swivel arms 34 and 35.
By contacting the upper end edge of the main and sub-rerotation arms, the mutual positional relationship of the main and sub-rerotation arms is maintained in a predetermined state.

Reference numeral 41 denotes a cassette insertion portion supported by the front end portions of the sub-swivel arms 34 and 35. Cassette insertion section 4
1 consists of a bottom plate part 42 and side plate parts 43.43 arranged at both left and right ends of the bottom plate part 42, and left and right side plate parts 43.43.
is fixed to the front end of the secondary pivot arm 34,35.

The bottom plate part 42 has a substantially trapezoidal notch at both its front and rear edges, and a substantially circular opening 44, 44' is formed in a portion corresponding to the reel stand 11, 11'. Reference numerals 45 and 45' denote cassette holding pieces that are provided so as to project inward from approximately the center in the front and back direction of the upper end edges of the left and right side plates 43 and 43, and the front portions of the pieces extend inward from each other. It is bent towards the stacking force to facilitate the insertion of tape cassettes.

Further, reference numeral 46 (see FIG. 9) is an arm rotation gear disposed at a position near the right edge of the mechanical chassis 4 and close to the chassis moving gear 19. The arm rotation gear 46 is formed in a substantially fan shape, and a main part thereof is rotatably supported by a gear shaft 47 supported by the mechanical chassis 4. A pressing pin 48 is integrally protruded toward the right side from a position near the lower end of the right side of the arm rotation gear 46, and the tip of the pressing pin 48 is connected to the right main rotation. It is slidably engaged with a long hole 24 formed in the movable arm 21. Incidentally, the arm rotation gear 46 is configured to be rotated by a motor, which will be described later, similarly to the chassis moving gear 19 described above.

As the arm rotation gear 46 is rotated, the suppression pin 48 is moved in the vertical direction, so that the portion of the right main rotation arm 21 that engages with the pressure pin 48 is pressed in the vertical direction. This allows it to be rotated in the vertical direction. As a result, the left and right main and sub-rerotation arms 21 and 34 and 22 and 35 are rotated in the vertical direction, whereby the cassette insertion section 41 is moved as shown in FIGS. 4 and 7.
The bottom plate portion 42 faces the upper surface of the mechanical chassis 4 substantially parallel to the reel stand 11 . Engagement shaft portion 12 of LL'.
12' is projected upward from the bottom plate part 42 through openings 44 and 44' formed in the bottom plate part 42 (hereinafter, this position is referred to as the "set position"), and the position shown in FIGS. As shown by the solid line and the two-dot chain line in FIG. (hereinafter, this position will be referred to as the "eject position").

Note that the cassette insertion section 41 is moved in the vertical direction as described above only when the cassette insertion section 41 is protruding from the outer casing 2. The operation timing is controlled by the engagement state of the control bin with the guide portion 16 of the guide member 15, which will be described later.

49 is a control pin that protrudes toward the right side from the right side surface of the front portion 23 of the right main rotating arm 21;
Its tip portion is slidably engaged with the guide portion 16 of the guide member 15. This control pin 49 is for controlling the timing of the operation of the slide mechanism for sliding the mechanical chassis 4 and the operation of the cassette attachment/detachment mechanism 20.

Next, a motor and its transmission mechanism for driving the chassis moving gear 19 and arm rotating gear 46 described above will be explained (see FIGS. 9 and 10).

50 is a motor. Motor 50 is mechanical chassis 4
The motor mounting plate 51 is located on the lower surface of the
The mechanical chassis 4 is fixed to the mechanical chassis 4, and is moved together with the mechanical chassis 4. 52 is a motor shaft, and an output pulley 53 is fixed to the tip thereof.

54 is a pulley shaft rotatably supported by a bearing member (not shown) provided on the upper surface of the mechanical chassis 4, and a large diameter transmission pulley 55 is attached to the left end of the pulley shaft 54.
However, a small-diameter transmission pulley 56 is fixed to the right end, and a large-diameter transmission pulley 55 and the motor 5
An endless belt 57 is passed between the output pulley 53 and the output pulley 53.

58 is a planetary gear mechanism. 59 is a rotating shaft rotatably supported by a bearing member (not shown), and a relatively large diameter input pulley 60 is fixed to the left end of the rotating shaft 59, and the input pulley 60 and the small diameter transmission pulley are fixed to the left end of the rotating shaft 59. An endless belt 61 is passed between the frame and the frame 56. Also 1
A sun gear 62 is located approximately at the center of the rotating shaft 59 in the axial direction.
is fixed.

63 is a first rotatable element, and the first rotatable element 63 is formed into an axially short cylindrical shape with a closed right end surface, and gear teeth 64 are formed on its inner circumferential surface. At the same time, a first output gear 65 is integrally formed in the center of the right end surface. The first rotatable element 63 is connected to the rotating shaft 59.
Among them, the sun gear 62 is rotatably supported on the right side of the fixed position, so that the sun gear 62 is arranged at the axial center of the inner peripheral surface where the gear teeth 64 are formed. .

Further, 66 is a second rotatable element formed in a substantially disk shape, and a second rotatable element is provided at the center of the left side surface of the second rotatable element 66.
An output gear 67 is integrally formed. And the second
The rotatable element 66 is rotatably supported on a portion of the rotating shaft 59 between the position where the input pulley 60 is fixed and the position where the sun gear 62 is fixed. 68.68
is approximately 18 mm across the center of the second rotatable element 66.
This is a bottle that protrudes toward the right side from a position 0°gI apart, and the sun gear 6 is attached to the tip of the bottle 68.68.
2 and the gear teeth 64 of the first rotor 63 are rotatably supported.

Therefore, when the motor 50 is rotated, the rotational force is transmitted from the output pulley 53 to the belt 57 to the transmission pulley 55 to
It is transmitted to the rotating shaft 59 through a transmission path such as pulley shaft 54 - transmission pulley 56 - belt 61 - manual pulley 60, thereby rotating the sun gear 62.

Then, when the sun gear 62 is rotated, the planet gear j9.
69 is rotated, but when the rotation of the first rotatable element 63 is prevented, the planetary gears 69 and 69 themselves are rotated around the sun gear 62 so as to draw a circular locus. , the second rotatable element 66 is rotated, and when the rotation of the second rotatable element 66 is prevented, the planetary gears 89 and 89 are in a state where they only rotate on the spot, The first rotatable element 63 is now rotated.

70 is a gear shaft 1 to which the chassis moving gear 19 is fixed.
8 , and the reduction gear 70 is meshed with the first output gear 65 of the planetary gear mechanism 58 .

Further, 71 is a gear shaft rotatably supported by a bearing member (not shown) provided on the upper surface of the mechanical chassis 4, and the left end of the gear shaft 71 is connected to the second output of the planetary gear mechanism 58. A large diameter reduction gear 72 meshed with the gear 67 is fixed, and a small diameter reduction gear 73 meshed with the arm rotation gear 46 is fixed to the right end of the gear shaft 71.

As the first output gear 65 of the planetary gear mechanism 58 is rotated, the chassis moving gear 19 is rotated, thereby causing the mechanical chassis 4 to slide as described above, and the second output gear 67 The rotation of the arm rotation gear 46 causes the rotation arms 21.34 and 22.35 to rotate in the vertical direction as described above.

Therefore, the slide of the mechanical chassis 4 and the rotating arm 21
．． The rotations of 34, 22, and 35 are performed by one motor 50, and the operation is controlled by the control pin 49, the guide member 15, and the planetary gear mechanism 58 in the following manner.

That is, the control bin 49 is connected to the chassis guide section 16 of the guide section 16.
a, that is, when the main rotating arm 21 is engaged with the portion extending along the substantially horizontal direction, the movement of the main rotating arm 21 in the vertical direction is prevented. The arm rotation gear 46 and the reduction gears 72 and 7 are connected to each other.
3 of the planetary gear mechanism 58 is prevented from rotating.
The output gear 67 is prevented from rotating.

Therefore, when the control bin 49 is engaged with the chassis guide part lea of the guide part 16, only the first output gear 65 is rotated, so that the rotational force of the motor 50 is reliably applied to the chassis moving gear 19. Becomes transmitted. This causes the mechanical chassis 4 to slide.

Further, the control bin 49 is connected to the arm guide section tab of the guide section 16.
That is, when engaged with a portion extending substantially vertically, movement of the main rotating arm 21 in the front-rear direction is prevented, thereby preventing movement of the mechanical chassis 4 in the front-rear direction. Therefore, the rotation of the chassis moving gear 19 and the reduction gear 70, which are meshed with the rack 17, is prevented, and therefore, the first output gear 65 is prevented from rotating.

Thus, the control bin 49 is connected to the arm guide section 1 of the guide section 16.
6b, only the second output gear 67 is rotated, so that the rotational force of the motor 50 is reliably transmitted to the arm rotation gear 46. This causes the pivot arms 21.34 and 22.35 to pivot,
The cassette insertion section 41 is moved in the vertical direction.

Note that when the control bin 49 is engaged with the continuous portion 16c of the guide portion 16, the mechanical chassis 4 slides and the rotation arms 21.34 and 22.35 rotate together. That is, the extending direction of the continuous portion 16c is a component of the sliding direction of the mechanical chassis 4 and the rotating arms 21.34 and 22.35.
Therefore, when the control bin 49 is engaged with this continuous portion 16c, the sliding of the mechanical chassis 4 and the rotation of the rotating arms 21.34 and 22.35 are both complete. will not be stopped.

Therefore, both the first and second output gears 65,67
The rotation is performed in accordance with the magnitude of each directional component of 6c, and the rotation is stopped when the directional component disappears.

The motor 50 is rotated in the normal direction when the mechanical chassis 4 is slid rearward, and rotated in the reverse direction when the mechanical chassis 4 is slid forward.

Further, the continuous portion 16c of the guide portion 16 is arranged at such a position that the control bin 49 starts to be engaged after the cassette insertion portion 41 comes out of the outer casing 2 when the mechanical chassis 4 is pulled out to the drawer position. There is. Therefore, as described above, the cassette insertion section 41 is moved in the vertical direction while it is protruding from the outer casing 2.

Therefore, the rotating arms 21, 34, 22, 35 are rotated toward the side opposite to the recording/reproducing unit 10 when the mechanical chassis 4 is pulled out to the pulled-out position, and the mechanical chassis 4 is turned toward the inside of the outer casing 2 from the pulled-out position. Recording and reproducing section 1
It is rotated to the 0 side.

Therefore, the slide of the mechanical chassis 4 and the rotating arm 21
．． 34, 22, and 35 are rotated by one motor, and the predetermined operation timing at which the rotation operation is to be performed is automatically determined by the engagement state of the control pin 49 with respect to the guide portion 16 and the planetary gear mechanism 58. controlled.

Next, an example 74 of a tape cassette used for VTR1
(See FIGS. 12, 13, and 18).

75 is a cassette housing formed in a substantially thin box shape;
The front wall of the cassette casing 75 has tape outlet arrows 76 formed at both left and right ends thereof, and the portion between the T-protrusion lower arrows 76 is bent into a substantially trapezoidal shape, so that it can be used for tape extraction. A recess 77 is formed. 78 is a magnetic tape.

Its end is wound around a tape reel 79 on the supply side (see FIG. 18) and a tape reel on the winding side (not shown), which are rotatably housed in the cassette housing 75. From the tape outlet arrow 76 to the cassette housing 7
5 and the tape drawer recess 77
It is designed to pass in front of the The hub portion of the tape reel is provided with an engaging shaft portion 12 of the reel stand 11, 11'.
．． 12' is formed, and when the tape cassette 74 is installed in a predetermined cassette installation position of the recording/reproducing section 10, the reel stand 11.1 is engaged with the reel stand 11.1.
The retaining shaft portion 12.12' of the cassette housing 75 is inserted into the engaging recess through an opening (not shown) formed in the bottom plate portion of the cassette housing 75.

Reference numeral 80 denotes a reel pressing spring supported on the inner surface of the top plate of the cassette housing 75, and the tape reel is attached to the tape cassette 7.
When the tape cassette 74 is not in use, it is pressed against the bottom plate of the cassette housing 75 by the reel pressing spring 80, and when the tape cassette 74 is installed in the recording/reproducing section IO, the reel pressing spring 80 pushes the reel stand 11. .1
It is now forced to 1.

A transparent plate 81 is fitted into an opening formed in a portion of the top plate of the cassette housing 75 that corresponds to the tape reel 79 on the supply side, and the inside of the cassette housing 75 is viewed through this transparent plate 81. Being able to do that.

Further, 82 is a label affixed to a part of the top plate of the cassette housing 75 on the opposite side to the part where the transparent plate 81 is arranged, and is used to write the recorded contents of the tape cassette. It is being done.

Reference numeral 83 denotes a front lid rotatably supported at the front of the cassette housing 75, and a tape drawer opening 84 in which the tape outlet arrow 76 and tape drawer recess 77 are arranged.
It is for opening and closing. The front cover 83 is formed into a horizontal U-shape that is long in the left and right direction when viewed from above, and support shafts 86 (86) (only one is shown in the drawing) extend from the left and right side plate portions 85.85. They are provided so as to protrude inward from each other. And the support shaft 86,
(86) is inserted into a bearing hole (not shown) formed in the left and right side plate portions of the cassette housing 75.
The front surface M83 is rotatably supported by the cassette body 75. Of the one support shaft 86, the cassette housing 7
A protrusion 87 that protrudes in a direction perpendicular to the axial direction is integrally formed in the portion located within the axial direction of the protrusion 87.

88 is a torsion spring, and an annular portion 88a in the middle thereof
is fitted onto the support shaft 86 on the side where the protrusion 87 is formed, and the tip of one arm 88b is attached to the cassette housing 75.
It is in elastic contact with the inner surface of the top plate at a position near the front edge. The other arm of the torsion spring 88 is formed into a substantially annular shape.

It is fitted onto the projection 87.

Thus, the front cover 83 is always in the first position because the protrusion 87 protruding from the support shaft 86 is pressed toward the rear of the cassette housing 75 by the torsion spring 88.
A rotating force is applied in the clockwise direction in FIG. 2, that is, in the direction of closing the tape drawer opening 84.

The front cover 83 is biased by the rotational force generated by the torsion spring 88, and the notches 89, 89 (see FIG. 18) formed at the lower edge of the front cover 83 are attached to the front end of the bottom plate of the cassette housing 75. The tape drawer opening 84 is kept in a closed state by being in contact with the tape drawer opening 84 .

Therefore, the front cover 83 is located between the closed position shown by the solid line in FIGS. 12 and 13 and the double-dashed line in FIGS. 11 and 18, and the open position shown by the solid line in FIGS. When the tape cassette 74 is not in use, it is in the closed position, and when the tape cassette 74 is installed in the recording/reproducing unit IO, the lid is opened by a mechanism described later. The magnetic tape 7 is moved to the open position by
It is now possible to draw an 8.

Thus, when the tape cassette 74 is used, it is installed in a predetermined installation position of the recording/reproducing unit IO, and the installation is carried out as follows (11th
(see figure).

First, the mechanical chassis 4 is pulled out to the drawn-out position. This causes the rotating arms 21.34 and 222.35 to rotate toward the side opposite to the recording/reproducing section 10, so that the cassette insertion section 41
comes to the eject position.

Therefore, the tape cassette 74 is inserted into the cassette insertion part 41 from the front MB2 side (the state shown by the two-dot chain line in FIG. It is inserted until it touches.

Since the motor 50 is rotated in the normal direction by operating a predetermined switch provided on the operating section, which will be described later, first, the five rotating arms 21.34 and 22.35 are rotated toward the recording/reproducing section IO side. As a result, the cassette insertion section 41 is moved toward the recording/reproducing section IO side.

Then, a little before the control pin 49 is engaged with the chassis guide portion 16a of the guide member 15, that is, a little before the cassette insertion portion 41 reaches the set position.

The bottom plate portion of the cassette housing 75 comes into contact with the upper end surface of the positioning bins 13, 13, 13', and 13' provided in the recording/reproducing section IO.

Note that positioning holes (not shown) are formed at positions near both left and right ends of the bottom plate portion of the cassette housing 75 near the front edge, and insert portions 13' of the rear positioning pins 13', 13'. a and 13''a are inserted into these positioning holes (not shown).

Thus, the tape cassette 74 is positioned in the vertical direction with respect to the recording/reproducing unit IO by placing the cassette housing 75 on the upper end surface of the positioning pins 13.13 and 13', 13', and the positioning By inserting the insertion portions 13a, 13a of the positioning pins 13', 13' into the holes, the recording/reproducing unit 10 is positioned in the front-rear direction and the left-right direction. As a result, the tape cassette 74 is mounted at a predetermined mounting position in the recording/reproducing section 10.

Thus, the tape cassette 74 inserted into the cassette insertion section 41 is inserted into the positioning bins 13, 13 and 13'.
, 13'' prevents the sub-swivel arms 34, 35 from moving downwards, and therefore the sub-swivel arms 34, 35 are also prevented from rotating downwards.

After the tape cassette 74 is installed at the predetermined installation position, only the main rotating arm moves further downward, that is, until the control bin 49 is engaged with the chassis guide portion 18a of the guide member 15. It will be rotated.

That is, the state shown by the solid line in FIG. 11 is reached. In this state, the regulation pin 27.31 protruding from the main rotating arm 21.22 is inserted into the elongated hole 38. of the sub rotating arm 34.35.
The distance 111 shown in FIG.
It comes to be engaged at a position that is lowered by an amount L.

Therefore, the tensile force of the tension springs 40, 40', which are passed between the main and sub-re-rotating arms 21 and 34 and between 22 and 35, respectively, is further increased, and this tensile force is The tape cassette 7 is inserted through the arms 34, 35, the cassette insertion part 41, and the cassette holding pieces 45, 45'.
This acts as a pressing force that presses the No. 4 cassette 75 from above.

Therefore, the tape cassette 74 has its cassette housing 75.
is pressed toward the recording/reproducing unit 10 side, thereby being pressed into a predetermined mounting position of the recording/reproducing unit IO. This allows the tape cassette 74 to be stably maintained at a predetermined mounting position.

Incidentally, while the tape cassette 74 is crimped as described above, the mechanical chassis 4 is moved from the position shown by the two-dot chain line in FIG. 11 (this position is the pull-out position) to the position shown by the solid line. ing.

Thus, the tape cassette 74 is pressed into a predetermined mounting position of the recording/reproducing section 10 by the tensile force of the tension springs 40 and 40' as the mechanism cassette 4 is drawn into the outer casing 2.

Incidentally, the ejecting operation of the tape cassette 74 loaded in the recording/reproducing section 1O is performed as follows. That is, when an eject button provided on the operating section, which will be described later, is pressed, the motor 50 is reversed, and the mechanical chassis 4 is moved from the retracted position or the semi-extracted position to the extended position. When the mechanical chassis 4 passes the position shown by the solid line in FIG.
It begins to rotate toward the side, and the regulation pin 2 provided on this
7.31 comes into contact with the upper edge of the elongated hole 38.38 of the sub-rotation arm 34.35.
4 and 22.35 are now rotated together. As a result, the cassette insertion section 41 is moved toward the side opposite to the recording/reproducing section 1O, and the tape cassette 74 is removed from the mounting position of the recording/reproducing section 10.

When the cassette insertion part 41 comes to the eject position, the rear part of the cassette housing 75 of the tape cassette 74 is positioned above the upper edge of the movable panel 6, so that it can be easily removed from the cassette insertion part 41. You will be able to take it out.

Next, a mechanism for opening the front cover 83 of the tape cassette 74 will be explained (see FIG. 7 and FIGS. 11 to 13).

90 is a member for opening the lid. The lid opening member 90 is formed in a horizontally U-shape that is long in the horizontal direction when viewed from above, and is connected to the left and right side plate portions 43 and 43 of the cassette insertion portion 41.
A rack is disposed across the rear of the frame, and is rotatably supported by the left and right side plate portions 43.43. That is, 9
Reference numeral 1 denotes a base portion disposed to close the rear end of the cassette insertion portion 41 when the cassette insertion portion 41 is at the eject position, and the base portion 91 is formed in a plate shape long in the left-right direction. In addition, the width in the vertical direction is made to be approximately equal to the height of the side plate parts 43, 43 of the cassette insertion part 41, and the upper part thereof is formed to be inclined obliquely toward the front side as it goes upward. An eaves portion 92 extending forward from the upper edge of the base portion 91 is integrally formed. Further, 93.93 is a support piece, and the support piece 93.93 is formed so as to be continuous with the upper portions of both left and right edges of the base portion 91 and both left and right edges of the eaves portion 92, and in the vertical direction toward the front end. It is formed so that the width becomes gradually narrower. Insertion holes 94.94 are formed in the front ends of the left and right side plate portions 93, 93, and pins 95 are provided in the insertion holes 94.94 protruding from the outer surfaces of the left and right side plate portions 43 of the cassette insertion portion 41. .95 is inserted through the cassette insertion portion 41, whereby the lid opening member 90 is supported at the front portion of the cassette insertion portion 41 so as to be freely rotatable in the downward direction on the road.

96 is a torsion spring related to the lid opening member 90. That is, the torsion spring 96 has an annular portion 9 in the middle thereof.
6a is a pin 95 provided in the cassette insertion portion 41.
The cassette insertion part 41 and the lid opening of the right side of the member 95 are fitted onto the part between the support pieces 93 on the right side of the member 91, and the tip of one arm 96b is formed on the inner surface of the support piece 93. It is in contact with the protrusion 97 from above. The tip of the other arm 96c of the torsion spring 96 is attached to a protrusion 9 provided on the upper edge of the right side plate 43 of the cassette insertion section 41.
8 from behind.

Therefore, when opening the lid, the member 90 is always rotated clockwise in FIG. Forced.

99 is an engagement piece provided on the member 90 for opening the lid. The engagement pieces 99 protrude forward from both left and right ends of the lower edge of the base 91, and have at least a length in the front and back direction that allows the tape cassette 74 to be inserted into the cassette insertion portion 41 in a predetermined manner. When inserted to this position, the tape cassette 74 is set to such an extent that it can reliably engage with the lower edge of the front cover 83 or the lower edge of the right side plate portion 85 from below.

By the way, the lid is opened using the pin 95. which is the pivot point of the member 90.
95 is one of the left and right side plate portions 43 and 43 of the cassette insertion portion 41, as shown in FIG.

It is provided at a position approximately corresponding to the axis of the support shafts 86 and 86 of the front surface M83 of the tape cassette 74 inserted to a predetermined insertion position of the cassette insertion portion 41. To open the lid, when the member 90 is rotated upward from the state shown in FIG. 12, the engaging piece 99 is moved in the direction shown by the arrow in FIG. WS12. This direction includes a component toward the front of the tape cassette 74 at least in the initial stage of the rotational movement.

Thus, when the lid is opened, the member 90 is rotated together with the front lid 83 of the tape cassette 74, and when the lid is opened, the portion that engages with the front lid 83 of the tape cassette 74 is rotated upward. This is done while applying a force to the front cover 83 to move the tape cassette 74 forward.

Reference numeral 100 denotes a lid lifting member provided on the mechanical chassis 4 (shown only in FIGS. 11 and 13). This lid lifting member 100 opens the lid by pressing the member 90. The opening is for rotating the member 90 and the front cover 83 of the tape cassette 74 upward, and is formed in a substantially inverted shape when viewed from the side, and the upper edge 101 of the tape cassette 74 is shaped like an inverted letter as viewed from the side. It is inclined so as to gradually approach the mechanical chassis 4. Then, when the cassette insertion section 41 is moved from the eject position toward the recording/reproducing section IO side, the lid raising member 100 opens the lid so that the lower surface of the engaging piece 99 of the member 90 is at the front end of its upper edge lot. It is placed in such a position that it abuts against the part that is close to it.

Thus, when the tape cassette 74 is loaded into the recording/reproducing section 10, its front surface M83 is automatically moved to the open position by the lid opening member 90 and the lid raising member 100.

Note that when the cassette insertion portion 41 is at the eject position, the lid opening member 90 is attached to the lid lifting member 100.
1, 5, 12, and 13, and the two-dot chain line in FIG. 11. The force has brought it to a position where it closes the rear end of the cassette insertion section 41.

However, the cassette insertion part 4 has come to the eject position.
When the tape cassette 74 is inserted into the tape cassette 74 to its predetermined insertion position, the front cover 83 of the tape cassette 74 is opened by the member 90, as shown in FIGS. 12 and 13.
is positioned so as to be in contact with the front surface of the base 91 of the
The engaging pieces 99 of the lid opening member 90 are engaged from below at both left and right ends of the lower edge thereof, and the eaves portion 92 of the lid opening member 90 is positioned so as to cover the upper end surface thereof.

That is, in this state, when the front cover 83 is moved toward the recording/reproducing unit 1O side, the front cover 83 is moved toward the member 90 when the cover is opened.
Since the engaging piece 99 abuts against the upper edge 101 of the lid lifting member 100, the lid is opened by rotating the member 90 in the direction shown by the arrow in Fig. tJS12 against the elastic force of the torsion spring 96. Ru. As a result, the lower edge of the front cover 83 is pressed in the direction indicated by the arrow in FIG. 12 by the engaging piece 99 of the cover opening member 90, so that the front cover 83 is moved toward the open position. Then, the tape cassette 74 is connected to the recording/reproducing section 1.
0, the member 90 is the tape cassette 7 to open the lid.
The front cover 83 is now positioned above the cassette housing 75 of No. 4, and the front cover 83 is in the open position.

By the way, when the front cover 83 of the tape cassette 74 is moved from the closed position to the open position, the torsion spring 88 associated with the front cover 83 is deformed to increase its elastic force, and the reaction force at this time is is actuated to move the cassette housing 75 toward the side opposite to the front cover 83. However, as mentioned above, when opening the lid, the pivot point of the member 90 is
Since the front cover 83 is provided at a position such that the rotation direction of the portion that engages with the front cover 83 includes a component moving toward the front of the tape cassette 74, the front cover 83 is rotated from the closed position to the open position. To open the lid, a force is applied by the member 90 to pull it forward. Therefore, the cassette housing 75 is not moved to the curved surface [83 side, and the front cover 83 is moved to the open position with the tape cassette 74 placed at a predetermined insertion position in the cassette insertion section 4. .

When the tape cassette 74 is inserted into the recording/reproducing section IO, the tape drawer opening 84 of the tape cassette 74 is opened, and the magnetic tape 78 that is passed through the tape drawer recess 77 and the front thereof is opened. A tape guide post, etc. of a tape loading mechanism (not shown) is arranged between the two. As a result, the magnetic tape 78
It is considered impossible to load the .

Next, the configuration of the operating section provided on the front panel 3 of the foreign bond 2 and the operations performed by operating the operating section will be explained.

102a, 102b, 102c, 102ci, 102e
and 102f are operation buttons, and an operation mode command for the magnetic tape 78 of the recording/reproducing section 10 is issued by pressing any one of these mode buttons 102& to 102f. Also, these mode buttons 1
02a to 102f also serve as operation buttons for issuing commands to move the mechanical chassis 4 from the drawn-out position to the retracted position. That is, when the mechanical chassis 4 is in the pulled out position, the mode buttons 102a to 10 are pressed.
2f(7) 102a, 102b.

By pressing 102c and 102d, a command is issued to the system controller to operate in the mode corresponding to the mode button, and the mechanical chassis 4
A command is given to move the to the retracted position. A specific program for controlling such operations will be described later.

Note that among the mode buttons 102a to 102f, 102
a is a playback mode button, 102b is a tape rewind mode button, 102c is a tape fast forward mode button, 102
d is the recording mode button, 102e is the stop mode button,
And i.

2f is a pause mode button.

Reference numeral 103 denotes an eject button, and when the mechanical chassis 4 is in a position other than the drawn-out position, pressing the eject button 103 causes the mechanical chassis 4 to eject.
can be pulled out to the drawer position. A specific program for controlling the operation when the eject button 103 is pressed will be described later.

104 requires that operations such as recording and reproduction on the magnetic tape 78 be performed either with the mechanical chassis 4 being pulled into the retracted position, or with the mechanical chassis 4 being pulled out to the partially pulled out position. This is an operation button for making a selection according to the mechanical chassis 4. If this position selection button 104 is pressed while the mechanical chassis 4 is in the retracted position, the mechanical chassis 4 is moved to the half-extracted position, and the mechanical chassis 4 is When this position selection button 104 is pressed while the mechanical chassis 4 is in the half-drawn out position, the mechanical chassis 4 is moved to the drawn-out position. Note that a specific program for controlling the operation when this position selection button 104 is pressed will be described later.

105 is an operation button for keeping the power supply alive;
If the power button 105 is pressed while the power is off, the power will be turned on to the entire system, and if the power button 105 is pressed while the power is on, the power will be turned off. ing. If the power button 105 is pressed while the mechanical chassis 4 is at a position other than the retracted position, the power is cut off after the mechanical chassis 4 is moved to the retracted position. A specific program for controlling the operation when the power button 105 is pressed while the power is on will be described later.

Note that 106, 106, . . . are channel selection buttons, and lO7 is a time display. Also, although not shown, the outer casing 2
The front panel 3 and movable panel 6 are provided with operating means such as operation buttons other than those described above and a timer setting button.

Figure i14 shows an example of a program for controlling each operation of the VTR 1 described above. This program will be explained step by step below.

(a) "Start" Press the power button 10 when the VTR is not powered on.
When 5 is pressed, control by this program is started. Incidentally, when control by this program is started, the mechanical chassis 4 is at the retracted position, as described above.

(b) "Is a cassette inserted?" Check whether the tape cassette 74 is inserted into the cassette insertion section 41, and if the tape cassette 74 was removed from the VTR 1 when the previous use was completed. rN
aJ, and rY if not taken out from VTR1
es J. Note that whether or not the tape cassette 74 is contained is confirmed by a sensor (not shown) provided inside the outer casing 2. If the tape cassette 74 is inserted, the process advances to step (r) and the tape cassette 74 is inserted.
If 4 is not entered, proceed to step (C).

(C) "Has the eject button been pressed?" Check whether the eject button 103 has been pressed or not. If it has been pressed, it is rYesJ, so read the [eject program] and perform control accordingly. If not, wait until the eject button 103 is pressed.

(d) "Eject Program" The contents of this program are shown in FIG. 15, and the details will be described later, but according to this program, the mechanical chassis 4 is pulled out to the pulled-out position.

(e) "Is the tape cassette inserted?" Tape cassette 7 is inserted into the cassette insertion section 41 that is at the eject position.
4 is inserted.

If the tape cassette 74 is inserted, the answer is Yes J, so proceed to the next step.
Detection of insertion of the tape cassette 74 is made by a sensor (not shown).

(f) [The mode button was pressed? No mode button ↓
02a, IQ2b, 102c, 102d to ask whether any one has been pressed 0 For example, play button 102
If a is pressed, it is rYeSJ, so proceed to the first step.

(g) [Rotate the slide motor in the normal direction] Mode 50
rotate in the forward direction. As a result, as described above, the tape cassette 74 is loaded into the recording/reproducing section 10.

The mechanical chassis 4 is moved toward the inside of the acceleration 2.

(h) "Has the tape cassette been crimped?" Inquires whether the tape cassette 74 has been crimped at the predetermined mounting position of the recording/reproducing section 10, and if it has been crimped, rY
Since it is es J, proceed to the next step.

(i) [Start tape loading operation. ” Since the press-fit state of the tape cassette 74 to the recording/reproducing unit IO has been confirmed in the previous step (h), the loading operation of the magnetic tape 78 by the tape loading mechanism (not shown) is started. That is, the tape loading operation is performed in parallel with the sliding operation of the mechanical chassis 4 to be moved to the retracted position. Note that the tape loading operation is executed by rotating a tape loading motor (not shown) in the loading direction.

(j) [Has the tape loading operation been completed? ” Detection of this tape loading state, which inquires as to whether or not the magnetic tape 78 is set so as to pass through a predetermined tape path of the recording/reproducing section 10, is performed by a sensor (not shown). If the tape loading operation has been completed, rYesJ is established, and the process proceeds to the next step.

(k) "Stop the tape loading motor." Stop the rotation of the tape loading motor that started rotating in step i.

(I) Has it passed the r half-drawn position? ” Inquires whether the mechanical chassis 4 has passed the half-drawn position.
This detection is performed by a sensor (not shown) provided in the VTR 1. Then, if the mechanical chassis 4 has passed the half-drawn-out position, it is "rYes" and the process proceeds to the next step.

(m) "Start the mode operation selected by the relevant mode button" The recording and reproducing unit 10 is operated according to the mode of the mode button that was confirmed to have been pressed in step f.0 For example, when the reproducing button 102a is If pressed, playback operation will begin. That is, operations such as recording and reproducing on the magnetic tape 78 by the recording/reproducing section 10 are started while the mechanical chassis 4 is being moved.

(n) "Has it reached the retracted position?" The position of the mechanical chassis 4, which asks whether it has reached the retracted position, is detected by a sensor (not shown) provided in the VTRI. And mechanical chassis 4
If it has come to the retracted position, it is rYes J, so proceed to the next step.

(0) "Stop the slide motor." Stop the rotation of the motor 50 that started rotating in step (g).

(p) “Was the mode button pressed?” Mode button 1
Inquires whether any of 02a to 102f has been pressed, and if the mode button has not been pressed,
Continue to operate in the current mode and step (
Return to b), and if the mode switch is pressed, proceed to the next step.

(q) "Start the operation of the mode selected by the relevant mode button" In other words, stop the operation of the mode that was being performed before step (p), and press the button in the previous step (p). According to the mode of the confirmed mode button, the recording/playback unit lO
For example, the tape rewind button 102b
If has been pressed, the magnetic tape 78 is rewound, and the process returns to step (b).

Incidentally, if it is detected in step (b) that the tape cassette 74 is inserted, the process proceeds to step (r).

(r) "Has the eject button been pressed?" Inquire whether the eject button 103 has been pressed. If the eject button 103 has been pressed, proceed to step (d) and perform the operation according to the eject program. Control is performed and the process proceeds to step (p) in which the eject button 103 must not be pressed.

Next, the "eject program" shown in FIG. 15 will be explained. Note that control by this program is started when the eject button 103 is pressed.

(a) "Is a cassette loaded?" Inquires whether the tape cassette 74 is loaded in the recording/reproducing section 10. If the tape cassette 74 is not loaded, there is no need to perform a tape unloading operation, so the question is asked immediately. The mechanical chassis 4 can be slid to the drawn-out position. Therefore, in this case, proceed to step (e), which will be described later.

Moreover, if the tape cassette 74 is contained, the process advances to the next step.

(b) Is it half drawn out? ” It is checked whether the mechanical chassis 4 is in the half-drawn out position or not. If the mechanical chassis 4 is in the half-drawn out position, it is necessary to perform a tape unloading operation before starting the sliding movement of the mechanical chassis 4. There is a step (
Proceed to step C), and if the mechanical chassis 4 has not reached the half-drawn position, proceed to step (h).

(C) "Start tape unloading operation" Rotate the tape loading motor in the tape unloading direction to perform the tape unloading operation, and proceed to the next step (d).

(d) "Has tape unloading been completed?" Inquires whether the tape unloading operation has been completed. If the tape unloading operation has been completed, the tape loading motor is stopped and the next operation is performed. Proceed to step (e).

(e) "Reverse the slide motor" Rotate the motor 50 in the reverse direction to slide the mechanical chassis 4 to the drawn-out position. Then, proceed to the next step (f).

(f) "Has it reached the drawn-out position?" It is asked whether the mechanical chassis 4 has come to the drawn-out position. If the mechanical chassis 4 has come to the drawn-out position, the process advances to the next step (g).

(g) "Stop the slide motor" Stop the rotation of the motor 50. Incidentally, the fact that the mechanical chassis 4 has come to the pull-out position is actually detected by detecting that the cassette insertion section 41 has come to the eject position, for example, by a sensor (not shown).

(h) "Is it in the drawer position?" Is it in the r half-drawer position in step (b)? ”, if the answer is rNoJ, then it is asked whether the mechanical chassis 4 is in the pulled out position, and if the mechanical chassis 4 is in the pulled out position, (in this case (This is a misoperation of the eject button 103), since the eject state is already in place, the process returns to the program shown in FIG. 14. Furthermore, if the answer to this question is rNoJ, the mechanical chassis 4 is at the retracted position, so the process proceeds to step (i), and control is performed to slide the mechanical chassis 4 while performing the tape unloading operation. I'm going to go.

(i) ``Reverse the slide motor.'' As a result, the mechanical chassis 4 is slid toward the drawn-out position.

(j) "Start tape unloading operation" That is, the tape unloading operation is performed in parallel with the sliding operation of the mechanical chassis 4.

(k) "Has the tape unloading operation been completed?" If the tape unloading operation has been completed, proceed to the next step ([).

(t) "Stop tape loading motor" Stop the tape loading motor and proceed to step (f).

Next, the "recording/playback position selection program" shown in FIG. 16 will be explained. Note that control by this program is started when the position selection button 104 is pressed.

(a) “Where is the recording/playback section located?” Mechanical chassis 4
, and if the position is other than the retracted position and the half-extracted position, movement between the retracted position and the half-extracted position is not performed.

That is, when the mechanical chassis 4 is moved from the drawn-out position, it is always moved to the drawn-in position as explained in the program shown in FIG. Movement to the partially drawn out position is not possible. Further, when the mechanical chassis 4 is in a position other than these, it means that the mechanical chassis 4 is performing a sliding operation, and therefore, in this case as well, disturbances between the retracted position and the half-extracted position are prevented.

If the answer to this question is "retracted position", the process proceeds to step (b), and if the answer is "half-drawn position", the process proceeds to step (e).

(b) "Reverse the slide motor" Rotate the motor 50 in the reverse direction to move the mechanical chassis 4 forward.

(C) "Has it reached the half-drawn out position?" It is asked whether the mechanical chassis 4 has come to the half-drawn out position. If the mechanical chassis 4 has come to the half-drawn out position, the process proceeds to step (d).

(d) "Stop the slide motor" Stop the motor 50.

(e) The above step of "rotating the slide motor in the normal direction" (
If the answer to a) is r, half-drawn out position j, the motor 50 is rotated in the normal rotation direction to move the mechanical chassis 4 rearward.

(f) [Has it reached the retracted position? ” It is inquired whether the mechanical chassis 4 has come to the retracted position or not. If the mechanical chassis 4 has come to the retracted position, the process proceeds to step (d).

In this manner, in the VTR 1, the mechanical chassis 4 can be moved between the retracted position and the partially retracted position as required. Therefore, when you want to visually check the remaining amount of tape during recording or playback, by pulling out the mechanical chassis 4 to the partially drawn out position, the recording/playback unit 10 and a part of the tape cassette 74 attached thereto are removed from the outer casing 2. Since the transparent plate 81 of the cassette housing 75 is exposed to the outside,
The amount of magnetic tape 78 loaded on the S reel 79 can be seen through it.

Also, during recording/playback, the label 82 of the tape cassette 74
When it is desired to write the recorded contents or the numbers on the tape counter at the position where the contents are recorded, the writing can be done by pulling out the mechanical chassis 4 to the half-drawn position.

Note that when the mechanical chassis 4 is pulled out to the half-drawn position, the lower part of the chassis drawer opening 5 of the outer casing 2 is blocked by the tape cassette 74, as shown in FIGS. 3 and 6. The upper part of the lid opens at the base 91 of the member 90.
The eaves section 92 is said to be in a cold state. Therefore, even if recording/playback operations are performed with the mechanical chassis 4 pulled out to the partially pulled out position, the inside of the outer casing 2 will not be completely visible through the chassis drawer opening 5, so the VTR 1 can be placed in a good-looking state. In addition, it is possible to prevent dust and foreign matter from entering the outer casing 2 from the tape outlet 5 to a certain extent.

Next, the "power off program" shown in FIG. 17 will be explained. By the way, this program controls the VTR.
This is done by pressing the i power button 105 while the power is on.

(a) "Is it in the retracted position?" Inquire whether the mechanical chassis 4 is in the retracted position.
If the mechanical chassis 4 has reached the retracted position, the process proceeds to step (C); otherwise, the process proceeds to step (b).

(b) "Rotate the slide motor in the normal direction and move it to the retracted position" When the mechanical chassis 4 is in a position other than the retracted position, rotate the motor 50 in the normal direction and move the mechanical chassis 4 to the retracted position.
, and return to step (a).

(e) "Turn off the power" If the mechanical chassis 4 has reached the retracted position, cut off the power.

In this way, in the VTR1, if the switch operation to cut off the power is performed while the mechanical chassis 4 is in a position other than the retracted position, the power is turned off after the mechanical chassis 4 is retracted to the retracted position. cut off, i.e. VTRI
All operations are now terminated.

Therefore, even if the power is inadvertently cut off while the mechanical chassis 4 is pulled out of the outer casing 2, the mechanical chassis 4 will be turned off before the power is actually cut off. 4 is automatically moved to the retracted or safe position.

Effects of the Invention As is clear from the above description, the tape recorder of the present invention has a recording and reproducing section provided with a mechanism necessary for recording and reproducing on a tape, which is slidably supported on the outer casing, and has the above-mentioned advantages. The recording/reproducing section is movable between a retracted position where the recording/reproducing section is pulled into the outer casing and one or more positions where the recording/reproducing section is pulled out outside the outer casing, and the recording/reproducing section is moved to a position other than the retracted position. If a switch operation is performed to cut off the power while the device is in the retracted position, the recording/reproducing section is moved to the retracted position and then the power is cut off.

Therefore, according to the present invention, the recording and reproducing section is slidably supported in the outer casing, and when the tape recorder is used, for example, when the tape recorder is attached to and removed from the recording and reproducing section, or when the tape recorder is removed from the outer casing. Despite the fact that the recording/playback section is pulled out from the outer casing when recording/playing while exposed to the It can be made to appear as if it is in a retracted position. Therefore, it is possible to reliably prevent the recording and reproducing section from being unnecessarily pulled out from the outer casing, and also to prevent dust and moisture from entering the recording and reproducing section.
It is possible to prevent the occurrence of accidents such as damage to the tape recorder due to something getting caught in the recording/reproducing section that is being pulled out.

In the embodiments described above, the tape recorder of the present invention was applied as a VTR, but the tape recorder of the present invention can also be applied as an ATR.

[Brief explanation of the drawing]

The drawings show an example of an embodiment in which the tape recorder of the present invention is applied to a video tape recorder, and FIGS. 1 to 3 each show the entire video tape recorder, and FIG. FIG. 2 is a perspective view of the recording/reproducing unit in the retracted position, FIG. 3 is a perspective view of the recording/reproducing unit in the partially retracted position, and FIGS. Figure 6 shows the main parts by cutting away the outer casing. Figure 84 shows the recording/reproducing unit in the retracted position, and Figure 5 shows the recording/reproducing unit in the withdrawn position. Fig. 6 is a side view of the recording/reproducing unit in the half-drawn position and a tape recorder is attached, and Fig. 7 is a perspective view showing the recording/reproducing unit, the slide mechanism, and the cassette attachment/removal mechanism. , FIG. 8 is a partially exploded perspective view of the cassette attaching/detaching mechanism, FIG. 9 is a perspective view of the transmission mechanism, and FIG. 10 is a partially cutaway perspective view of the drive unit.
Figure 11 is an enlarged side view of the main parts showing the crimping operation of the tape recorder and the opening of the lid of the tape recorder, Figure gS12 is a partially cutaway side view of the tape recorder inserted into the cassette holder, and Figure 13. 14 is a partially cutaway perspective view of the tape recorder inserted into the cassette holder, FIG. 14 is a chart showing an example of a basic program, FIG. 15 is a chart showing an example of an eject program, and FIG. The figure shows a chart showing an example of the recording/playback position selection program Duram, Fig. 17 shows a chart showing an example of a power off program, and Fig. 18 shows an example of the video tape recorder shown in Figs. 1 to 17. 1 is a perspective view of an example of a suitable tape recorder with the front lid open; FIG. Explanation of symbols 1, 0 tape recorder, 201. Outer casing. 10... Reference recording and playback section, 78... Tape Figure 9 Figure 10 Figure 15 Figure 17@

Claims (1)

[Claims] A recording and reproducing section provided with a mechanism necessary for recording and reproducing data on a tape is slidably supported in an outer casing, and the recording and reproducing section is moved between a retracted position into the outer casing and a retracted position when pulled out from the outer casing. and when a switch operation is performed to turn off the power while the recording/reproducing unit is at a position other than the retracted position, A tape recorder characterized in that the power is cut off after the recording/reproducing section is moved to the retracted position.