JPS6185690A - Video tape recorder - Google Patents

Abstract

PURPOSE:To make a composition of a mechanical chassis pullout system VTR simple by guiding a connecting pin of a rotating arm of a cassette holding part at the chassis guiding part,transferring a driving force by a planet gear mechanism and controlling pulling-out of the mechanical chassis and turning of the cassette holding part. CONSTITUTION:A chassis shifting gear 19 is turned through a motor 50 and a planet mechanism 58 and a mechanical chassis 4 of VTR1 is pulled out along a rack part 17. At this case, a connecting pin 49 of a turning arm 21 of a cassette holding part 41 is shifted along a guide of a chassis guide member 15, and turning of the holding part 41 is prevented. When the pin 49 arrives at a guide part 16c of a guide 16, prevention of turning of the arm 21 is released, a selector gear 46 of an arm driving means 48 is rotated through a mechanism 38, the arm 21 is swung by the pin 48 and the holding part 41 is turned. Thus, the composition of the mechanical chassis pull-out system VTR is made simple.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a new videotape recorder. Specifically, a video tape recorder in which a mechanical chassis provided with a recording/reproducing section is slidably supported in an outer casing, and the mechanical chassis is pulled out from the outer casing to attach and remove a tape cassette from the recording/reproducing section. The moving means for moving the mechanical chassis in the sliding direction and the cassette mounting means for mounting the tape cassette at a predetermined mounting position of the recording/reproducing section can be driven by one motor. , the sequential operation timing of mechanical chassis movement and tape cassette loading can be controlled without using special control means, and this type of VT
The present invention aims to provide a novel video tape recorder that is compact in size and has excellent operability, in which the structure of R can be significantly simplified.

BACKGROUND OF THE INVENTION In recent years, video tape recorders (hereinafter referred to as rVTRs), especially home VTRs, have been spreading at a rapid pace. ing.

By the way, this type of VTR generally uses a so-called cassette type magnetic tape. For this reason, this type of VTR is provided with a cassette loading mechanism for loading the tape cassette into a predetermined position on the VTR.

Conventional cassette loading mechanisms can be divided into the following two types in terms of their loading methods. That is, one is a so-called top-loading type cassette loading mechanism, and the other is a so-called front-loading type cassette loading mechanism.

FIGS. 19 and 20 show conventional VTRs equipped with cassette loading mechanisms for each of the above-mentioned loading methods.

First, the VTRa shown in FIG. 19 will be explained. The cassette loading mechanism of this VTRa is of a top-loading type. In the drawings, b is the outer casing of the VTRa, and C is an illustration provided at a predetermined position inside the outer ib of the top plate portion of the outer 1b. This is an opening formed in a portion corresponding to the upper part of the reel stand. Reference numeral d denotes a cassette holder supported above a reel stand in the outer casing so as to be movable in the vertical direction. This is a member for moving to a predetermined mounting position where it is engaged with the base. and.

The cassette holding part d is formed in a substantially frame shape with an opening at the front and a space large enough to insert the tape cassette e with a certain margin, and the top plate part f is formed of a transparent plate. has been done.

As shown by the solid line in FIG. 19, the cassette holding part d is located at a position protruding upward from the outer casing (hereinafter, this position will be referred to as the "eject position"), and its top plate part f is located at the outer ib. The opening C of the tape cassette y is closed, and the tape cassette y inserted therein is attached to the above-mentioned attachment position (
This position is hereinafter referred to as the "set position").

When using the VTRa, the cassette holding part d is pushed to the eject position by pressing an eject button (not shown), the tape cassette e is inserted into this, and the cassette holding part d is pressed from above. and push it into the set position.

In addition, on the top plate of tape cassette e and cassette ff,
Generally, a transparent portion g is provided to allow tape reels and the like to be viewed from the outside. Therefore, even when the tape cassette e is installed in the mounting position of the VTRa, the tape reel and the tape wound thereon cannot be seen through the top plate part f of the cassette holding part d and the transparent part g of the tape cassette e. This allows you to visually check the amount of tape remaining.

Next, the VTRh shown in FIG. 20 will be explained. The cassette loading R structure of this VTRh is a front loading type. In the drawing, i is the VTRh.
A cassette insertion slot k is formed in the front panel j of the outer casing i. t is a cassette carrier movably arranged in the rear part of the cassette insertion slot in the outer casing i, and its external shape is approximately the same as the above-mentioned VTRa.
It is formed similarly to the cassette holding part d. and,
The cassette carrier 1 is supported so as to be guided in the moving direction by a guide member (not shown), and is located at a position 1. shown by a broken line in FIG. That is, the position immediately behind the cassette insertion slot (hereinafter referred to as the "eject position"), and the position shown by the two-dot chain line in the same figure, that is, behind and below the eject position. At the same time, the tape cassette e inserted therein is mounted at a predetermined mounting position, and the tape reel of the tape cassette e is engaged with a reel stand (not shown) (hereinafter, this position is referred to as "
between the "set position" and "set position" along a substantially upside-down trajectory as shown by the solid arrow in the figure. That is, when the cassette carrier t is moved from the eject position to the set position, once the cassette carrier t
-) It is moved in the horizontal direction to a position above the table, and then it is moved downward in the vertical direction from that point 1δ at l/X.

When the tape cassette e is inserted into the foreign bond i from the cassette insertion slot k while the cassette carrier 1 is at the eject position 1ζf.

The tape cassette e is held by the cassette carrier t1, and the cassette carrier t is moved along the above-mentioned movement trajectory by a hyper-moving mechanism (not shown) and is placed in a predetermined mounting position. Problems to be Solved by the Invention The above-mentioned VTRa has a problem in that the cassette holding part (outside)
Since the cassette holder b is moved so as to protrude upward, there is no need to include the vertical movement stroke of the cassette holding part d in the height of the outer casing. The minimum size that can be used is sufficient, so V
There is an advantage that the TR can be configured in a small size.

However, since the cassette holding part d protrudes above the outer casing, not only is it impossible to place the video device on top of the outer casing, but also when it is placed in a rack, the V
There is a problem in that the placement location is very limited, such as being limited to those having a considerably large space above the TR.

In addition, in the other VTRh mentioned above, the tape cassette can be inserted and removed from the front side of the outer casing, so the space above the outer casing can be used effectively, and the place where it can be placed is limited. This rarely happens.

However, a special mechanism is required to move the cassette carrier between its eject position and set position, and it is also necessary to include the vertical movement stroke of the cassette carrier t in the height of the outer casing i. Because there is
There is a problem in that the shape, especially the shape in the height direction, becomes very large.

Therefore, the mechanical chassis itself in which the recording/reproducing section is installed is supported in a slidable manner on a foreign bond, and the tape cassette is attached to and removed from the recording/reproducing section by pulling the recording/reproducing section forward from the outer casing. I thought about doing it.

In this way, there is no need to include the vertical movement stroke of the cassette holder in the height of the outer casing, and there is no obstacle to utilizing the space above the outer bond.

However, even with this arrangement, the cassette holder has two positions: an eject position where a tape cassette is inserted into and ejected from the cassette holder, and a set position where the tape cassette inserted into the cassette is mounted at a predetermined position in the recording/playback unit. A mechanism for moving between the two is necessary, and by making the mechanical chassis slidable, a problem arises in that the structure of the VTR becomes even more complex.

Moreover, the Dou 1 Go, which has a mechanical chassis that can be slid freely,
The mechanism provided in the mechanical chassis needs to be as simple as possible in order to reduce the weight of the sliding parts.

In addition, when the mechanical chassis is made slidable, its cassette loading mechanism is shown in FIG.
It is possible to use a top-loading system similar to that in 1., but the cassette loading mechanism based on the cassette loading system not only has extremely poor operability, but also has the mechanical chassis pulled out from a foreign bond.
8, when the cassette holding part is pressed from above, V
It is extremely difficult to use this method because there is a risk of tilting the TR or, in some cases, overturning it.

Means for Solving the Problems In order to solve the above-mentioned problems, the video tape recorder of the present invention has a mechanical chassis provided with a recording and reproducing section that is slidably supported in an outer casing, and a mechanical chassis that is provided with a recording and reproducing section. This is a video tape recorder in which the tape cassette is installed and taken out by pulling out the mechanical chassis from the external bond, and the cassette holding part is rotatably supported by the mechanical chassis in a downward direction on the road and holds the tape cassette at the front end. A guide member consisting of a rotating 7-arm with an angle of J9, a chassis guide part fixed to the outer casing side and extending in a substantially horizontal direction, and an arm guide part continuously extending in a substantially perpendicular direction from the front end of the chassis guide part. , a rack part disposed along the extending direction of the chassis guide part, an engagement pin supported by the rotating arm and whose tip end is slidably engaged with the guide member, and one motor. , a planetary gear rotated by the motor, and a planetary gear rotated by the planetary gear.
a planetary gear mechanism comprising an output gear and a second output gear; a chassis moving gear supported by the mechanical chassis and rotated by the first output gear and meshed with the rack portion; arm driving means provided and driven by the second output gear and for rotating the rotating arm in the vertical direction;
When the engagement pin is engaged with the chassis guide portion of the guide member, the engaged state prevents the vertical movement of the rotating arm and causes only the first output gear to rotate. to slide the mechanical chassis, and when the engaging pin is engaged with the arm guide portion of the guide member, the engaged state prevents the mechanical chassis from moving and only the second output gear rotates. It is characterized in that the rotating arm is moved in the vertical direction in such a manner that the rotary arm is moved vertically.

Accordingly, in the video tape recorder of the present invention, a mechanical chassis provided with a recording/reproducing section is slidably supported on a foreign bond, and a tape cassette is attached to and removed from the recording/reproducing section by pulling out the mechanical chassis from the outer casing. In such a video tape recorder, the movement of the mechanical chassis in the sliding direction and the rotation of the rotation arm provided with the cassette holding part are performed by one motor, and each motor is driven at a predetermined timing. A planetary gear mechanism is used to switch the path for transmitting the rotational force of the motor to the two drive means to be used, namely, the chassis moving gear that slides the mechanical chassis and the arm drive means that rotates the rotating arm. This is how it was done. Therefore, even though the mechanical chassis is pulled out from the tape cassette to and from the recording/playback section, the mechanism of the VTR does not become complicated and the weight of the mechanical chassis does not increase. can be slid smoothly with a relatively small driving force.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, details of a video tape recorder of the present invention will be explained in accordance with embodiments shown in the accompanying drawings.

In the drawing, 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. When the chassis drawer opening 5 is moved to the retracted position (hereinafter referred to as the "retracted position") into the inside of the chassis 2, the chassis drawer opening 5 is closed by the movable panel 6, as shown in FIGS. 2 and 4. It is designed to be able to be removed.

Although not shown in the drawings, 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 VTRI. 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 the outer casing 2 side. 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 and 7' are guide rails fixed along both left and right edges of the lower surface of the mechanical chassis 4, and the guide rails 7 and 7' have 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 two guide rollers disposed inside the outer casing 2 near both the left and right opening edges of the chassis drawer opening 5, and are spaced apart from each other to some extent in the front and back direction. 8, 8', and 8' are rotatably supported at the tips of roller shafts 9.9, (9'), and (9') (only the right one is shown in the drawing) fixed to the outer casing 2 side. 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 back directions with respect to the outer casing 2, and the mechanical chassis 4 is not guided in the sliding direction by the guide rollers 8. Re.

Further, it can be drawn into the outer casing 2 from the pulled out position.

, 10 (see FIG. 7) is a recording/reproducing unit provided in the mechanical chassis 4, and the recording/reproducing unit 1o includes members or members necessary for recording/reproducing data on a magnetic tape of a tape cassette, which will be described later. A mechanism is provided.

That is, 11 and 11' are reel stands disposed near the front edge of the mechanical chassis 4 at a predetermined distance of 1 IllI from each other in the left-right direction.
`` are rotatably supported by a reel shaft (not shown), and an engaging shaft portion 12, 12' is provided at each 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. Of these, the pins 13" and 1 are located on the rear side.
Approximately conical insertion portions 13'a, 13' are inserted from the upper end surface of 3'.
A is provided protrudingly. In addition, these positioning pins 13.1
3, 13', and 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 drawing, in reality, in addition to the above-mentioned components, there are also an audio head and a control head 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 running path of the magnetic tape, and a tape loading mechanism for pulling out the magnetic tape from the tape cassette and winding it around the head member and the tape guide post '8. A capstan, a pinch roller, etc. are provided for running the magnetic tape at a predetermined speed, and on the lower surface of the mechanical chassis 4, the rotary side drum 14a of the head drum, the capstan, the reel stand 11. A motor, a transmission mechanism, a servo mechanism, etc. are provided for rotating the parts 11' and the like.

In this VTR 1, the recording/reproducing section 10 itself is slidably supported with respect to the outer casing 2, and when the mechanical chassis 4 is pulled out of the outer casing 2, As shown in the figure and FIG. 6, the recording/reproducing section 10 is adapted to be pulled out of the outer casing 2. As shown in FIG.

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

Reference numeral 15 denotes a guide member disposed within the outer casing 2 at a position slightly closer to the right than above the right side edge of the mechanical chassis 4, and is fixed to the outer casing 2 side by a mounting member (not shown). The guide member 15 is arranged to extend in the front-rear direction, and has a substantially slit bent in a substantially horizontal J-shape when viewed from the side, from a position closer to the front end of the stack to the front end. A shaped guide 116 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 substantially horizontally to a position close to the chassis guide part L6a, and an arm guide part 16b that extends continuously from the front end of the chassis guide part L6a in a substantially vertical direction 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 16b 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 19 is moved forward while meshing with the rack 17, and thereby the mechanical chassis 4 is moved forward. Also, the mechanical chassis 4 is in the position shown in FIGS. 1 and 5 (hereinafter, this position is 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 referred to as the "half-drawn position"), 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 a mechanism for attaching a tape cassette, which will be described later, to the cassette attachment position of the recording/reproducing section 10 and for removing it from the cassette attachment position. In other words, 21 and 22 are main rotating arms arranged near the rear 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. has been done.

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 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 N near the front end of the lower edge of 8. From 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 erected at both left and right ends of the upper surface of the mechanical chassis 4 along the rear edge of the mechanical chassis 4, and both ends of the interlocking shaft 33 are attached to the upper ends of the support pieces 32 and 32. It is rotatably 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 by approximately the same weight as 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.
In addition, insertion holes 39 and 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 38 and 38 of the sub-swivel arms 34 and 35.
By coming into contact with the upper edge of the main and sub-rotating arms, the mutual positional relationship between the main and sub-rotating arms is maintained in a predetermined state.

Reference numeral 41 denotes a cassette insertion portion supported by each +iiJ end of the sub-swivel arms 34 and 35. The cassette insertion part 41 consists of a bottom plate part 42 and side plate parts 43 and 43 arranged at both left and right ends of the bottom plate part 42.
．． 43 is fixed to the front end of the secondary pivot arm 34.35. The bottom plate portion 42 has a substantially trapezoidal notch at both its front and rear edges, and the reel stand 11.11''.
Approximately circular openings 44.44' are formed in the corresponding portions. Reference numeral 45.45' denotes a cassette holding piece that is 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, 43, and the front part of the piece extends inward from the upper edge of the left and right side plates 43, 43. It is bent toward the stacking blade to facilitate 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 surface 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 movement gear 19 described above.

As the arm rotation gear 46 is rotated, the press pin 48 is moved in the vertical direction, so that the portion of the right main rotation arm 21 that engages with the press 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 in parallel, and the retaining shaft portion 12. of the reel stand 11.11'.
12' is projected upward from the bottom plate part 42 through the openings 44 and 44' formed in the bottom plate part 42 (hereinafter, this position is referred to as the "position"), and the position shown in FIGS. 5
As shown by the solid line in the figure and the double-dashed line in Fig. 11,
A position where the bottom plate portion 42 is located far above the upper end of the reel stand 11, 11', and the front end is located above the upper edge of the movable panel 6 (hereinafter, this position is referred to as "
(referred to as "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 a control pin 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;
The tip end thereof is slidably engaged with the inside 16 of the beam 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, the motor and its transmission mechanism for driving the chassis moving gear 19 and the arm rotating gear 46 described above will be explained (see FIG. 9 and FIG. 1O).

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,
A sun gear 62 is located approximately at the center of the rotating shaft 59 in the axial direction.
is fixed.

Reference numeral 63 denotes a first rotatable element, and the first rotatable element 63 is formed into a cylindrical shape that is short in the axial direction with a closed right end surface, and has gear teeth 64 formed on its inner surface. A first output gear 65 is integrally formed in the center of the right end face. The first rotatable element 63 is rotatably supported on a portion of the rotating shaft 59 to the right of the position where the sun gear 62 is fixed. A sun gear 62 is disposed at the center of the shaft.

Further, 66 is a second rotatable element formed in a substantially disk shape, and a center portion of the left side surface of the second rotatable element 66 has m
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 pin that protrudes toward the right side from a position between 0°gI, and the tip of the pin 68.68 has the sun gear 6.
2 and gear teeth 64 of the first rotatable element 63 are rotatably supported.

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

When the sun gear 62 is rotated, the planetary gears 69.
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. , when the second rotor 66 is rotated and the rotation of the second rotor 66 is blocked, the planetary gears 69, 69 are in a state where they only rotate in place, The first rotatable element 63 is now rotated.

70 is a gear il to which the chassis moving gear 19 is fixed.
This is a reduction gear fixed to the left end of d+18, 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 gear shaft of the 'M planetary gear mechanism 8. A large diameter reduction gear 72 meshed with the output 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 pin 49 is connected to the chassis guide part 16 of the guide part 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 pin 49 is engaged with the chassis guide part 16a 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 pin 49 is connected to the arm guide portion 16b of the guide portion 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 needle speed gear 70 that are engaged with the rack 17 is prevented, and therefore, the first
The output gear 65 is in a state y8 in which its rotation is prevented.

Therefore, the control pin 49 is connected to the arm guide portion 1 of the guide portion 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 pin 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.
When the control pin 49 is engaged with the 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 have a continuous
16c is rotated according to the magnitude of each directional component, 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 pin 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 drawn-out 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, when the mechanical chassis 4 is pulled out to the drawn-out position, the rotating arms 21, 34, 22, and 35 are rotated toward the side opposite to the recording/reproducing unit lO, and the mechanical chassis 4 is turned from the drawn-out position toward the inside of the outer casing 2. 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 and 22.35 are rotated by the motor of ltM, 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 the guide portion 16 and the planetary gear 4IJ58. controlled by.

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

75 is a cassette If body 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 tape outlet arrows 76 is bent into a substantially trapezoidal shape to form a tape drawer recess 77. is formed. 78 is a magnetic tape.

Its end portion is wound around a supply side tape reel 79 (see figure i18) and a take-up side tape reel (not shown) which are rotatably housed in a cassette housing 75, and a portion thereof is Tape exit arrow, 76 to 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 a retaining 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 engagement shaft portion 12.12' of the cassette housing 75 is inserted into the engagement 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 10, the reel pressing spring 80 pushes the reel stand 11. .1
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, so that it does not damage the recorded contents of the tape cassette. It is made possible.

Reference numeral 83 denotes a front lid rotatably supported on the front part of the cassette body 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 lid 83 is rotatably supported by the cassette lhf body 75. A protrusion 87 that protrudes in a direction perpendicular to the axial direction is integrally formed in a portion of one of the support shafts 86 located inside the housing 75 .

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.

Incidentally, the tii side lid 8s is biased by the rotational force generated by the torsion spring 88, and the cutout portions 89, 89 (see FIG. 18) formed at the lower edge of the lid 8s are attached to the cassette 12 body 75.
The tape drawer opening 84 is maintained in a closed state by being brought into contact with the front end of the bottom plate portion of the tape drawer opening 84 .

Thus, the front cover 83 is in the closed position shown in solid lines in FIGS. 12 and 13, in the closed position shown in two-dot chain lines in FIGS. 11 and 18, and in the open position shown in solid lines in FIGS. 11 and 18, respectively. It is set up so that you can move between
When the tape cassette 74 is not in use, it is in the closed position, and the tape cassette 74 is in the closed position.
When the magnetic tape 78 is attached to the magnetic tape 78, the cover opening described later is moved to the open position by a mechanism, thereby making it possible to pull out the magnetic tape 78.

Thus, when the tape cassette 74 is used, it is installed in a predetermined installation position of the recording/reproducing section 10, 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 lid 83 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 forward direction by operating a predetermined switch provided on the operating section, which will be described later, first, the rotating arms 21.34 and 22.35 are rotated toward the recording/reproducing section 10. As a result, the cassette insertion section 41 is moved toward the recording/reproducing section 10 side.

Then, a little before the control pin 49 is engaged with the chassis guide part 16a of the guide member 15, that is, the cassette insertion part 4
1 reaches the set position, the bottom plate portion of the cassette housing 75 touches the positioning pin 1 provided on the recording/reproducing section 10.
3.13, 13', and the upper end surfaces of 13' come into contact.

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' for 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 section 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 fixed to the positioning pins 13, 13 and 13'.
, 13' prevents the sub-swivel arms 34, 35 from moving downwards, and accordingly, 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 pin 49 is engaged with the chassis guide portion 16a 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 regulating pin 27.31 protruding from the main rotating arm 21.22 is connected to the elongated hole 38.3 of the sub rotating arm 34.35.
38, these are engaged at a position below the upper edge thereof by a distance shown in FIG. 11.

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 arm 34, 35, the cassette insertion part 41, and the cassette holding piece 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, when the mechanical chassis 4 is drawn into the outer casing 2, 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, 40'.

Incidentally, the ejecting operation of the tape cassette 74 loaded in the recording/reproducing section 10 is performed as follows. That is, when the eject button provided on the operating section (described later) is pressed, the motor 50 is reversed, and the mechanical chassis 4 is moved from the retracted position or 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 10, so that 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 tape cassette 74 is positioned above the upper edge of the movable panel 6, so that the tape cassette 74 can be inserted into the eject position. It becomes possible to easily take it out from the insertion part 41.

Next, the mechanism for opening the front cover 83 of the tape cassette 74 described above will be explained (see Figs. 7 and 11 to ff113).

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. The width in this direction is made to be approximately equal to the height of the side plate portions 43, 43 of the cassette insertion portion 41, and the upper portion 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. Also,
Reference numeral 93.93 denotes 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 its width in the vertical direction increases toward the front end. is formed so that it gradually becomes narrower. Insertion holes 94 are provided at the front ends of the left and right side plate portions 93.93.
．． 94 is formed, and pins 95.95 protruding from the outer surfaces of the left and right side plate portions 43 of the cassette insertion portion 41 are inserted into the insertion holes 94.94. It is supported at the front part of the insertion part 41 so as to rotate downwardly 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 98c 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 a retaining 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 the tape cassette 74 is inserted all the way in, it can reliably engage with the lower edge of the front cover 83 of the tape cassette 74 or the lower edge of the right side plate 85 from below.

By the way, the lid is opened using the pin 95. which is the pivot point of the member 90.
95, as shown in FIG.
It is provided at a position corresponding to the axis of the support shaft 86 of the front cover 83 of the tape cassette 74 inserted to a predetermined insertion position. 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. 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 surface M83 of the tape cassette 74, and when the lid is opened, the portion of the member 90 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 10 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 101. 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 unit IO, the front cover 83 is automatically moved to the open position by the cover opening member 90 and the cover raising member 100.

Note that when the cassette insertion part 41 is at the eject position, the member 90 is used to open the lid by using the lid lifting member lOO.
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, the front surface M83 is opened by the member 90.
is made to be held in place.

Therefore, when the cassette insertion section 41 is moved toward the recording/reproducing section 10 as described above, the lid is opened by the member 90.
Since the engaging piece 99 abuts against the upper edge 101 of the lid raising member 100, the member 90 is rotated in the direction shown by the arrow in FIG. Ru. As a result, the lower edge of the front cover 83 is pressed in the direction shown by the arrow in FIG. Then, the tape cassette 74 is connected to the recording/reproducing section 1.
0, the member 90 is attached to the tape cassette 7 to open the lid.
The front cover 83 comes to be 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 curved lid 83 side. However, as mentioned above, when opening the lid, the pivot point of the member 90 is
II at a position that includes the forward component of the tape cassette 74 in the rotational direction of the portion that engages with the front cover 83.
Since the front cover 83 is rotated from the closed position to the open position, a force is applied to the front cover 83 by the member 90 to pull it forward. Therefore, the cassette housing 75 is not moved toward the curved lid 83, and the front lid 83 is moved to the open position with the tape cassette 74 placed at a predetermined insertion position in the cassette insertion portion 41.

When the tape cassette 74 is installed in the recording/reproducing section 10, the tape drawer opening 84 of the tape cassette 74 is opened, and the m% tape 78 that is passed through the tape drawer recess 77 and the front thereof is opened. A tape guide post or the like of a tape loading mechanism (not shown) is arranged between the two and the two. As a result, the magnetic tape 7
8 can be loaded.

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

LO2a, 102b, 102c, 102cl, 102e
and 102f are operation buttons, recording 11) live section 10
The operating mode command for the magnetic tape 78 is issued by pressing any one of the mode buttons 102a to 102f. Furthermore, these mode buttons 102a 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 drawn-out position, among the mode buttons 102a to 102f, (7) 102a, 102b, 102c,
By pressing 102d, a command is issued to the system controller to operate in the mode corresponding to the mode button, and a command is also issued to move the mechanical chassis 4 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 102f 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 on the magnetic tape 78, such as recording and reproducing, be performed with the mechanical chassis 4 pulled into the retracted position, or with the mechanical chassis 4 pulled out to the partially pulled out position. 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-retracted position, and
When this position selection button 104 is pressed while the mechanical chassis 4 is at 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 entire system is powered on, and if the power button 105 is pressed while the power is on, the power is turned off. . Then, when the mechanical chassis 4 is in a position other than the retracted position, this power button 1
When 05 is pressed, the mechanical chassis 4 is moved to the retracted position and then the power is cut off. still,
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, fist... is a channel selection button, and 107 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.

FIG. 14 shows an example of a program for controlling each operation of the VTR1 described above. This program will be explained step by step below.

(a) "Start" Press the power button 10 when the VTRI 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 there a cassette?" Inquires whether the tape cassette 74 is in the cassette insertion section 41, and if the tape cassette 74 was removed from the VTRL when the previous use was completed. "N
"O", and if it has not been taken out from VTR1, rY
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) [Eject button pressed? ” Inquire whether the eject button 103 has been pressed. If it has been pressed, rYesJ, read the “eject program” and perform control accordingly. If it has not been pressed, 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 pull-out position.

(e) "Is the tape cassette inserted?" Inquires whether the tape cassette 74 has been inserted into the cassette insertion section 41 which is at the eject position.

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) “Was the mode button pressed?” Mode button 1
0 For example, the play button 102 asks whether any of 02a, 102b, 102c, and 102d has been pressed.
If a is pressed, it is rYesJ, so proceed to the next 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, and the mechanical chassis 4 is moved toward the inside of the outer casing 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 the tape rope inking operation." Since the pressure bonding state of the tape cassette 74 to the recording/reproducing unit 10 has been confirmed in the previous step (h), the loading operation for the magnetic tape 78 by the tape loading mechanism (not shown) is started. 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?" This question asks whether the magnetic tape 78 has been set to pass through a predetermined tape path of the recording/reproducing section 10. This tape loading state is detected by a sensor (not shown). be done. If the tape loading operation has been completed, rYes J, 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.

(t) "Has it passed the half-drawn out position?" Inquire whether the mechanical chassis 4 has passed the half-drawn out position;
This detection is performed by a sensor (not shown) provided in the VTRI. 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 confirmed to have been pressed in step f.0 For example, when the reproducing button 102a 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? J The position of the mechanical chassis 4, which asks whether it has come to the retracted position, is detected by a sensor (not shown) installed in the VTRI.Then, the mechanical chassis: /
If 4 is in the retracted position, 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) 1-Was the mode button pressed? ” Inquires whether any of the mode buttons 102a to 102f has been pressed. If the mode button has not been pressed, the operation of the current mode is continued, the process returns to step (b), and the mode switch is pressed. If 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/reproducing section 10
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, when 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. The mechanical chassis 4 can be immediately slid to the drawn-out position. Therefore, in this case, the process proceeds 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?" Inquires whether the mechanical chassis 4 is in the half-drawn out position.If the mechanical chassis 4 is in the half-drawn out position, the sliding movement of the mechanical chassis 4 is started. Since it is necessary to perform tape unloading operation before
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) "Did it come to the pulled out position?" Ask about the force (distortion force) that brought the mechanical chassis 4 to the pulled out position.
Then, if the mechanical chassis 4 is at the drawn-out position, the process advances to the next step (g).

(g) "Stop the slide motor" Stop the rotation of the motor 50. Note that the detection that the mechanical chassis 4 has come to the pull-out position is actually performed by, for example, detecting that the cassette insertion portion 41 has come to the eject position from the first sensor (not shown).

(h) "Is it in the drawn out position?" If the answer to the question "Is it in the partially drawn out position?" in step (b) is "NO", then the mechanical chassis 4 is in the drawn out position. If the mechanical chassis has reached the 4-force ζ pull-out position (in this case, there was a mistake in the operation of the eject button 103), it is already in the eject state, so the i14 Return to the program shown in the figure. Also, if the answer to this question is rMoJ, 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) ``Tape unloading operation starts; 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 (L).

(1) "Stop the 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. Furthermore, the control by this program is very good! 1 selection button 104 is pressed.

(a) “Where is the recording/playback section located?” Mechanical chassis 4
If the position is other than the retracted position or the semi-extracted position, movement between the retracted position and the semi-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 sliding motion when it is in a position other than these, it is 5, so that movement between the retracted position and the half-retracted position is also prohibited in this case.

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

(C)r Has it come to the half-drawer position? ” It is inquired whether the mechanical chassis 4 has reached the half-drawn out position or not. If the mechanical chassis 4 has come to the half-drawn out position, the process advances to step (cl).

(d) [Stop slide motor] Stop the motor 50.

(e) "Rotate the slide motor in the normal direction" If the answer in step (a) is "half-drawn position", the motor 5o is rotated in the normal direction to move the mechanical chassis 4 backward.

(f) "Have you come to the retracted position?" Mechashaan 4 has come to the retracted position 1 to 1, but asks if it is An.
If the mechanical chassis 4 has reached 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, record.

When you want to visually check the remaining amount of tape during playback.

By pulling out the mechanical chassis 4 to the half-drawn position, the recording/reproducing unit 10 and the tape cassette 74 loaded therein are
Since a portion of the magnetic tape 78 is exposed outside the outer casing 2, the amount of the magnetic tape 78 wound on the S reel 79 can be seen through the transparent plate 81 of the cassette casing 75.

In addition, the label 82 of the tape cassette 74 is
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.

When the mechanical chassis 4 is pulled out to the half-drawn position V, the lower part of the chassis drawer opening 5 of the outer casing 2 is covered with the tape cassette 74, as shown in FIGS. 3 and 6. , whose upper part is Zi open is the base 9 of the member 90.
1 and the eaves part 92. Therefore, even if recording/reproducing 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 l 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. In addition, control by this program is
This is done by pressing the power button 105 while the power is on.

(a) [Is it in the retracted position? ” Inquires 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 forward direction and move it to the retracted position" If the mechanical chassis 4 is in a position other than the retracted position, rotate the motor 50 in the forward 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 VTRI, 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 when the mechanical chassis 4 is pulled out of the outer casing 2, the mechanical The chassis 4 is automatically moved to the retracted or safe position.

Effects of the Invention As is clear from the above description, the video tape recorder of the present invention has a mechanical chassis provided with a recording and reproducing section that is slidably supported in the outer casing, and a tape cassette is attached to the recording and reproducing section. The video tape recorder is such that a mechanical chassis is pulled out from an outer casing for removal, and the mechanical chassis is rotatably supported in a downward direction on the road, and a cassette holding portion for holding a tape cassette is provided at a front end thereof. a rotating arm; a chassis guide fixed to the outer casing side and extending substantially horizontally; and an arm guide extending continuously from the front end of the arm guide in a substantially vertical direction; a rack part arranged along the direction; a retaining pin supported by the rotating arm and having a distal end slidably engaged with the guide member; a motor; and a retaining pin rotated by the motor. a planetary gear mechanism consisting of an M star gear, a first output gear and a second output gear rotated by the M star gear; a planetary gear mechanism supported by the mechanical chassis and rotated by the first output gear; It includes a chassis moving gear meshing with the rack portion, and arm driving means provided on the mechanical chassis and driven by the second output gear and for rotating the rotating arm in the vertical direction, and the engaging pin is engaged with the chassis guide portion of the guide member, the engagement state prevents the vertical movement of the rotary arm, and only the output gear of the if is rotated to rotate the mechanical chassis. and when the engaging pin is engaged with the arm guide portion of the guide member, the engaged state prevents the mechanical chassis from moving and only rotates the second output gear. It is characterized in that the rotating arm can be moved in the vertical direction.

That is, in the video tape recorder of the present invention, instead of movably supporting only the cassette holding member for mounting the tape cassette at the mounting position of the recording and reproducing section with respect to the VTR main body, the recording and reproducing section itself is mounted on the outer casing. On the other hand, the tape cassette is slidably supported, and the tape cassette is mounted on and taken out from the recording/reproducing section while the recording/reproducing section is pulled out from the outer casing.

Therefore, since there is no need to include the vertical movement stroke of the cassette holder in the height of the VTR outer case, the height of the outer case can be minimized, and
Since the cassette holder does not protrude above the outer casing, the space above the VTR can be used effectively, and
There are few restrictions on where the VTR can be placed.

Particularly, in the present invention, the movement of the mechanical chassis in the sliding direction and the rotation of the rotation 7-m provided with the cassette holding part are performed by one motor, and each is performed at a predetermined timing. Switching the path for transmitting the rotational force of the motor to the two drive means to be driven by the motor, that is, the chassis moving gear that slides the mechanical chassis and the arm drive means that rotates the rotating arm. This can be done automatically using a planetary gear mechanism.

Therefore, even though the mechanical chassis is pulled out from the outer casing to load and remove the tape cassette from the recording/playback unit, the mechanism of the VTR does not become complicated and the weight of the mechanical chassis does not increase. , the mechanical chassis can be slid smoothly.

[Brief explanation of drawings]

FIGS. 1 to 17 show an example of the implementation of the video tape recorder of the present invention, 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 pulled-out position; FIG. 3 is a perspective view of the recording/reproducing unit in the partially-extracted position;
Figures 6 to 6 show the main parts by cutting away the outer casing. Figure 4 shows the recording/reproducing unit in the retracted position, and Figure 5 shows the recording/reproducing unit in the withdrawn position. Figure 6 is a side view of the recording/playback unit in the partially drawn out position and a tape cassette is installed, and Figure 7 is a side view of the recording/playback unit, the slidable structure, and the cassette attachment/removal. Fig. 8 is a perspective view showing the cassette attaching/detaching mechanism partially exploded; Fig. 9 is a perspective view showing the transmission mechanism;
Figure 0 is a partially cutaway perspective view of the drive unit, Figure 11 is an enlarged side view of the main parts showing the tape cassette crimping operation and the tape cassette lid opening operation, and Figure 12 is the tape cassette held in the cassette holding unit. 13 is a partially cutaway perspective view of the tape cassette inserted into the cassette holder; FIG. 14 is a chart showing an example of the main program; FIG. Fig. 15 is a chart showing an example of an eject program, Fig. 16 is a chart showing an example of a recording/playback position selection program, Fig. 17 is a chart showing an example of a power off program, and Fig. 318 is a chart showing an example of a power off program. A perspective view showing an example of a tape cassette suitable for a video tape recorder with the front side opened, and FIGS. 19 and 20 are perspective views showing different examples of a conventional video tape recorder. Explanation of symbols■+1...Video tape recorder, 2...Fist outer casing, 4...Mechanical chassis, IO...
Recording and reproducing section, 15...-guiding member, 16a... chassis guide section, 16b-Φ arm guide section. 17 Race @ Φ rack part 1 19-...Chassis moving gear, 21.22.34.35...Rotating arm, 41.Φ.
Cassette holding part, 46. 48. Fist arm driving means, 49.. Engagement pin, 50.. Motor, 58.
...TL planetary gear mechanism 65.11e first output gear, 67.ψ0 second output gear. 6911φe planetary gear. 74...Disputed tape cassette Figure 9 Figure 10 Figure 19r , Indication of the case 1982 Patent Application No. 206070 2 Name of the invention Video tape recorder 3 Relationship to the case by the person making the amendment Patent applicant address 6-7-35, Kitashinyo, Tokyo Parts Ward Name ( 2
18) Sony Corporation Seikinsha 4, Agent 5, Claims column and Detailed Description of the Invention column 6 of the specification to be amended, contents of the amendment as stated in the attached written amendment. Procedural Amendment 1: The scope of claims in the specification is amended as shown in the attached sheet. 2. On page 512, line 4 of the specification, from "and its front end" to the next line, "consisting of" is corrected to "comprises". 3. In the 8th line of page 12 of the specification, "slidably engaged" is corrected to "guided by". 4. Delete the 12th line of page 12 of specification 7, from ``the mechanical chassis'' to the next line, ``together''. 5.Details 7!3 Delete the last column of page 12, line 14, from ``previous'' to the next line, ``provided''. 6. In the third line of page F513 of the specification, "When engaged with the arm guide part, depending on the state of engagement" is corrected to "When not engaged with the chassis guide part." 7. In the beginning of page 13 of the old specification TjS, from ``tono'' to the next line, ``naru'' is corrected to J with [. 8. From the 17th line to the next line on page 73 of the IJI detailed reading, ``1r1 movement IJ is engaged with the 1r1 movement ``guided by'' number koJ1 is corrected. 9 Delete the second line of page 74 of the detailed section, starting with ``The Mechashaan'' and ending with ``Together'' in the next line. 10 In the 5th line of page i74 of the specification, "provided on the mechanical chassis" is deleted. 11 Specification 6, page 74, from line 13 to the next line [When engaged with the arm guide part, depending on the engagement state, correct J to "When not engaged with the chassis guide part" . Claims: A video tape in which a mechanical chassis provided with a recording and reproducing section is slidably supported in an outer casing, and a tape cassette is attached to and taken out from the recording and reproducing section by pulling out the mechanical chassis from the outer casing. The recorder includes a rotary arm that is rotatably supported by a mechanical palm in a downward direction on the road and provided with a cassette holding part for holding a tape cassette at the front end, and a rotary arm that is fixed to the outer casing side and is oriented approximately horizontally. a guide member having a shear guide portion extending to;
a rack part disposed along the extending direction of the chassis guide part; an engagement pin supported by the rotating arm and whose tip end is guided by the guide member; a motor; a planetary IS mechanism comprising a planetary gear, a first output gear and a second output gear rotated by the planetary gear; a chassis moving gear rotated by the first output gear and meshed with the rack part; , arm driving means that is driven by the second output gear and rotates the rotating arm in the vertical direction, and when the engaging pin is engaged with the chassis guide portion of the guide member. 17iJE engagement pin prevents vertical movement of the rotary arm and rotates only the first output gear to slide the mechanical chassis, and the engagement pin 17iJE engages the chassis of the guide member. The videotape is characterized in that when it is not engaged with the guide part, movement of the mechanical arm is prevented and only the second output gear is rotated, thereby moving the rotary arm in the vertical direction. recorder

Claims (1)

[Claims] A video tape recorder in which a mechanical chassis provided with a recording and reproducing section is slidably supported in an outer casing, and the mechanical chassis is pulled out from the outer casing to attach and take out a tape cassette to and from the recording and reproducing section. , a rotating arm that is rotatably supported by the mechanical chassis in a downward direction on the road and is provided with a cassette holding part for holding a tape cassette at its front end, and a chassis guide part that is fixed to the outer casing and extends in a substantially horizontal direction. and an arm guide section extending continuously in a substantially vertical direction from the front end thereof, a rack section disposed along the direction in which the chassis guide section extends, and a tip end portion of the arm guide section supported by the rotating arm. an engagement pin slidably engaged with the guide member, a motor, a planetary gear rotated by the motor, and a first output gear and a second output gear rotated by the planetary gear. a planetary gear mechanism comprising: a chassis moving gear supported by the mechanical chassis, rotated by the first output gear and meshed with the rack; and a chassis moving gear provided on the mechanical chassis and configured by the second output gear. and arm driving means that is driven and rotates the rotating arm in the vertical direction, and when the engaging pin is engaged with the chassis guide portion of the guide member, the rotating arm is rotated depending on the engagement state. When the mechanical chassis is slid by preventing vertical movement of the movable arm and rotating only the first output gear, and the engagement pin is engaged with the arm guide portion of the guide member. The video tape recorder is characterized in that, depending on the engaged state, movement of the mechanical chassis is prevented, and only the second output gear is rotated to move the rotary arm in the vertical direction.