JPS62139169A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To miniaturize a device with a simple constitution as much as possible by moving a cassette holder so that it can freely go in and out a cabinet, containing a tape cassette in the cabinet in a shift completion state and positioning a cylinder on the aperture of the tape cassette. CONSTITUTION:A cassette loading member loading the tape cassette 33 fitted with respect to the cassette holder 28, a holding member 34b positioning the tape cassette 33 fitted on the cassette loading member, an unlocking member 34g unlocking the cassette cover of the tape cassette 33 fitted on the cassette loading member, a control means controlling the holding member 34b and the unlocking member 34g by interlocking with the loading action of the cassette loading member, and a cassette moving mechanism, which moves the cassette holder 28 so as to freely go in and out the cabinet 11, contains the tape cassette 33 in the cabinet 11 in the shift completion state and positions the cylinder 12 on the opening part of the tape cassette 33, are provided. Thus the miniaturization can be realized with the simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic recording and reproducing apparatus that is oriented toward miniaturization, such as an 8 mm video tape recorder.

[Technical background of the invention and its problems] Recently, video tape recorders (hereinafter referred to as VTRs) have become popular.
In recent years, a tape cassette called an 8 mm video tape cassette has been developed to promote miniaturization and weight reduction, and to improve handling including portability. By the way, VTRs that have been made smaller and lighter in size use tape cassettes, which are about 1/4 the size of conventional 1/2-inch video cassettes. Miniaturization of the shape and dimensions has been achieved.

However, the above-mentioned VTR is subject to space constraints due to the arrangement of the cylinder in which the magnetic head is mounted and the tape cassette. The handling, including transportation, was not satisfactory.

For this reason, it is strongly requested that each mechanical part of the above-mentioned VTR, including the tape loading mechanism, be improved to be suitable for miniaturization, and miniaturized to the point where it is convenient to bend and carry. has been done.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a magnetic recording/reproducing device that has a simple configuration and can be made as compact as possible.

[Summary of the Invention] In other words, the present invention provides a magnetic recording/reproducing device in which a magnetic tape wound around a tape cassette loaded in a cassette holder is pulled out and mounted on a cylinder, into which the tape cassette is inserted. a cassette loading member for loading the tape cassette inserted into the cassette holder; a holding member for positioning the tape cassette inserted into the cassette loading member; and a holding member inserted into the cassette loading member. a lock release member for unlocking a cassette lid of the tape cassette; a control means for controlling the holding member and the lock release member in conjunction with the loading operation of the cassette loading member; and a cassette moving mechanism that allows the tape cassette to be moved in and out of the tape cassette, and when the movement is completed, stores the tape cassette in the cabinet and positions the cylinder with respect to the opening of the tape cassette, making it convenient to carry. In this way, miniaturization has been promoted.

[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 each show a magnetic recording/reproducing device according to an embodiment of the present invention, and FIG. 1 shows the state before cassette loading (in other words, the unloading state)
, FIG. 2 shows the state when cassette loading is completed.

That is, numeral 10 in the figure is a chassis housed in a cabinet 11, and a cylinder 12 on which a magnetic head (not shown) is mounted is arranged in this chassis at a predetermined angle of inclination. A loading ring 13 is disposed around the cylinder 12, and this loading ring 1
3 is a first drive gear 14 for tape loading drive.
and a second drive gear 15 for driving cassette loading (the operation of moving the tape cassette 33 in the cylinder direction is called this) are meshed with each other. These first and second drive gears 14 and 15 are connected to a fourth gear 20 whose central axis is the capstan 19 via the first to third gears 16 to 18. This fourth gear 20 is meshed with a drive source gear 22 fitted onto the rotating shaft of the motor 21. On the other hand, the second
The drive gear 15 is meshed with the seventh gear 25 via the fifth and sixth gears 23,24. One end of a cassette loading lever 26 is attached to the central shaft of the seventh gear 25, and an engaging protrusion 27 is formed at the other end of the cassette loading lever 26. The engaging protrusion 27 is detachably engaged with a cassette holder 28 which is disposed opposite the cylinder 12 and capable of being loaded in the directions of arrows A and B. This cassette holder 28 has the first to fourth links 2 as shown in FIGS. 3 and 4.
In FIG. 3, there is a bucket section 34 such as a cassette loading member that holds the inserted tape cassette 33 and lowers it to load it into a predetermined position, and the supported tape cassette 33 is opposed to the cylinder 12. It is composed of a shifter section 37 that allows loading in the directions of arrows A and B along guide rails 35 and 36 provided as shown in FIG.
Up.

The cassette is projected from the cabinet 11 in the state before loading, and is housed in the cabinet 11 upon completion of the cassette loading. As shown in FIG. 3(C), one end of the bottom surface of the bucket part 34 has a first
A shaft 34a is provided protrudingly provided on the first shaft 34a, and an intermediate portion of a holding member 3''4b for positioning the cassette is attached to a spring 34.
A shaft 6 is rotatably attached in one direction via a shaft 6. The tape cassette 3 has a holding portion 34d inserted into one end of the holding member 34b.
For example, a bent drive portion 34e is formed at the other end to correspond to the drive shaft 10a implanted in the chassis 10. Further, as shown in FIG. 3(a), a second shaft 34f is protruded from the other end of the bottom surface of the bucket portion 34.
4f is a lock release member 34 for releasing the cassette lid lock.
The middle portion of Q is rotatably attached in the axial direction via a spring 34h. A release part 341 is formed at one end of the lock release member 34Q to correspond to a lock release part (not shown) of the tape cassette 33 inserted therein, and a bent driving part 34j, for example, is provided at the other end of the lock release member 34Q. It is formed opposite to the drive shaft ob implanted above. When the tape cassette 33 is housed in the bucket section 34, the unlocking section 341 of the locking member 34Q presses the locking section of the tape cassette 33 to release the lock of the cassette lid. As shown in FIG. 3, the tape cassette 33 is inserted in a state in which the leading end is held and positioned.

Then, the bucket portion 34 connects the first to fourth links 2
When the tape cassette 33 is lowered as shown in FIGS. 3 and 5(b) by 3 to 32 and reaches a predetermined position, the holding member 34b and the lock release member 34Q are moved to their respective driving portions 34e.

34j is pressed and rotated by the drive shafts 10a, 10b on the chassis 10 against the spring force of the springs 34c, 34h, and its holding part 34d and release part 341 are placed between the tape cassettes 33 and 111, and the tape cassette 33 is housed in the shifter section 37 in a loadable state.

On the other hand, the shifter section 37 has its distal end engaged with the engagement protrusion 27 of the cassette loading lever 26 as shown in FIG. 3 before loading, and detached as shown in FIG. 4 when loading is completed. A recess 38 is formed, and a pair of reel stands 39 and 40 for supply and winding are disposed approximately in the center thereof. Each of the reel stands 39, 40 is coaxially provided with toothed portions 41.42, with which an eighth gear 43 for tape running drive is selectively meshed. The rotation shaft of the eighth gear 43 is meshed with a ninth gear 45 via an oscillating member 44, and the clockwise and counterclockwise directions in the figure correspond to the rotational drive direction of the ninth gear 45. is urged to rotate in the direction. A pulley 46 is formed coaxially with this ninth gear 45, and this pulley 46 is in a state where rotational force can be transmitted via a belt 48 to a pulley 47 formed coaxially with the drive source gear 22. connected to.

Furthermore, the first slider 49 and the rotatable tension lever 50 are disposed on the chassis 1o in correspondence with the inlet side of the cylinder 12 and in correspondence with the opening 51 of the tape cassette 33, A second slider 52, a rotatable pinch lever 54 supporting a pinch roller 53, and a rotatable tape pull-out member 55 are attached to a portion 51 of the opening 9 of the tape cassette 33, corresponding to the exit side of the tape cassette 33. will be arranged accordingly. These first slider 49, tension lever 50, second slider 52,
The pinch lever 54 and the tape pull-out member 55 are connected to the first slider 4 disposed on the entrance side of the cylinder 12.
9 and the tension lever 50 are provided with guides 56 and 57 that are rotatable substantially perpendicularly to the chassis 10. A second slider 52 disposed on the exit side of the cylinder 12 has a return guide 59 rotatable in response to the magnetic tape 58 wound diagonally with respect to the cylinder 12.
, a first inclined guide 60 for regulating the inclination angle, and a first guide 61 for regulating each tape winding are provided upright.

Further, as shown in FIG. 6, a pinch roller 53 and a guide 62 for guiding the tape are mounted on the pinch lever 54 and the tape pull-out member, respectively, and are provided approximately perpendicularly to the chassis 10. Spring members 54a and 55a are respectively attached to the base so as to apply their spring force in the clockwise and counterclockwise directions in the figure. The pinch lever 54 and the tape pull-out member 55 have engaging portions 54b and 55b, respectively, and drive first and second cam portions 37a and 37b formed at the tip of the shifter portion 37.
It is set up correspondingly.

Furthermore, the chassis 1 on the inlet side of the cylinder 12
0, a fixed guide 63 and an erasing head 64, which are arranged approximately vertically, are arranged at a predetermined interval on the tape path.
A fixed guide portion 65 is disposed on the chassis 1o between the second slider 52 and the pinch roller 53 on the exit side. The fixed guide 65 includes a second inclined guide 66 for tape reference plane conversion corresponding to the first inclined guide 60 of the second slider 52 and a second inclined guide 66 extending substantially parallel to the first guide 61. For tape winding, for example, a rotatable second guide 67 for controlling the angle is provided upright.

Now, the magnetic recording/reproducing apparatus configured as described above operates as described below. That is, the tape cassette 33 protrudes from the cabinet 11 in the cassette holder 2.
When the cassette lid is accommodated in the bucket portion 34 of No. 8 as shown in FIG. Ru. When the bucket portion 34 is lowered by the first to fourth links 29 to 32, the holding member 34b and the lock release member 34Q are released from the springs 34C and 34Q, respectively.
The tape cassette 33 is rotated against the spring force of 4h and separated from the tape cassette 33, and the tape cassette 33 is housed in the shifter section 37. At the same time, the tape cassette 33 is loaded onto the reel stand 39.
．． 40 and its opening 51 as shown in FIG.
The first and second sliders 49 and 52, the guide 57 of the tension lever 50, the pinch roller 53, and the tape pull-out member 55 are housed in the housing. Here, a cassette detection switch (not shown) detects the tape cassette 33, and the motor 21 is rotated clockwise in the drawing. Then, the rotational force of the motor 21 is transmitted through the drive source gear 22, the fourth to first gears 20° 18 to 16, and the first drive tooth l114, and the loading ring 13 is interlocked with the rotation to generate a second drive. The seventh gear 25 is rotationally driven in the counterclockwise direction in the figure via the gear 15 and the fifth and sixth gears 23 and 24. As the seventh gear 25 rotates, it rotates the cassette loading lever 26 to load the shifter section 37 supporting the tape cassette 33 in the direction of arrow A, and when it reaches a predetermined position, The engagement protrusion 27 of the cassette loading lever 26 is connected to the shifter portion 37.
The cylinder 12 is removed from the recess 38 of the tape cassette 33 and positioned so as to bite into the opening 51 of the tape cassette 33, thereby completing loading (see FIG. 2).

At this time, the first and second sliders 49 and 52, the tension lever 50, the pinch roller 53, and the tape pull-out member 55, which are housed in the opening 51 of the tape cassette 33, are connected to the first and second sliders 49 and 52, respectively. 52 and tension lever 50 are connected to the loading ring 13.
The tape loading is performed by locking the magnetic chips 158 in conjunction with the rotation of the tapes. On the other hand, the pinch lever 5
The pinch roller 53 of No. 4 and the guide 62 of the tape pull-out member 55 have their respective engaging portions 54b and 55b connected to the shifter portion 3.
7, the first and second cam portions 37a of the shifter portion 37 move in the direction of arrow A.

37b, the first and second sliders 49 and 52 and the tension lever 50 move counterclockwise and clockwise in the figure.
The magnetic tape 58 of the tape cassette 33 is rotated correspondingly to the tape bus. As a result, the magnetic tee 158 is pressed against the capstan 19 by the pinch roller 53, and tension is applied by the tension lever 50, so that the reel stand 39
The tape is rotated at a rotation angle of 40 degrees, and the tape is moved to perform recording or reproduction.

Further, when a stop key (not shown) is operated in the above-described state where the cassette and tape loading is completed, the motor is driven in reverse, and the cassette holder 28 is rotated in a manner substantially opposite to the cassette preliminary tape loading operation described above. The bucket section 34 is unloaded to the pre-loading position shown in FIG.
However, for the sake of convenience, a detailed explanation thereof will be omitted here. In this case, the magnetic tape of the tape cassette 3'3 is connected to the belt 48 and the pulley 4 by the rotational force of the pulley 47 provided coaxially with the drive source gear 22.
6, ninth gear 45, swinging member 44, eighth tooth 1 [43
The tape is then transmitted to the reel stand 40 on the supply side via the teeth 42, and winding of the tape corresponding to the above-mentioned unloading is performed.

In this manner, the magnetic recording and reproducing apparatus separates the holding member 34b for positioning the tape cassette and the lock release member 34o for unlocking the cassette lid provided in the bucket part 34 in conjunction with the loading operation of the bucket part 34. The cassette holder 28 is moved in and out of the cabinet 11, and when the movement is completed, the tape cassette 33 is accommodated in the cabinet 11 and inserted into the opening 51 of the tape cassette 33. Since the cylinder 12 is positioned at a distance between the tape cassette 33 and the cylinder 12, it is possible to make the distance between the tape cassette 33 and the cylinder 12 as close as possible, thereby realizing miniaturization as much as possible.

Further, in the above embodiment, the present invention has been explained in the case where it is applied to an 8 mm video tape recorder using an 8 mm video tape cassette, but the present invention is not limited to this, and can be applied to a video tape recorder using a 1/2 inch tape cassette. Almost the same effect can be expected.

It goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the gist of the invention.

``Effects of the Invention'' As detailed above, according to the present invention, it is possible to provide a magnetic recording and reproducing device that has a simple configuration and is as compact as possible.

[Brief explanation of drawings]

1 and 2 are configuration explanatory diagrams showing a magnetic recording and reproducing apparatus according to an embodiment of the present invention, respectively, and FIGS. 3 and 4 are detailed configuration diagrams showing the main parts of FIGS. 1 and 2. , FIG. 5 is an operating state diagram shown to explain the operation of the holding member shown in FIGS. 3 and 4, and FIG. 6 shows the tape drawer member and pinch lever drive unit shown in FIGS. FIG. 10...Chassis, 11...Cabinet, 12.
...Cylinder, 13...Loading ring, 14
゜15...first and second drive gears, '16 to 18
...first to third gears, 19...capstan,
20...Fourth gear, 21...Motor, 22...
Drive source gears, 23 to 25...5th to 7th gears,
26... Cassette loading lever, 27... Engaging protrusion, 28... Cassette holder, 29 to 32...
・First to fourth links, 33... tape cassette,
34... Bucket part, 35.36... Guide rail,
37... Shifter portion, 34a, 34f... First and second shafts, 34b... Holding member, 34C, 34h...
Spring, 34d... Holding part, 34e... Drive part, 10a, 10b... Drive shaft, 340... Lock release member, 34i... Release part, 34j... Drive part, 3
8... Concavity, 39.40... Reel stand, 41.42
... tooth portion, 43 ... eighth gear, 44 ... swinging member, 45 ... ninth gear, 46.47 ... pulley,
48... Belt, 49... First slider, 50
...Tension lever, 51...Opening, 52...
・Second slider, 53...pinch roller, 54・
... Pinch lever, 55 ... Tape drawer member, 56
．． 57...Guide, 58...Magnetic tape, 59...
・Return guide, 6o...first inclined guide, 61
...first guide boss, 62...guide, 54a
. 55a... Spring member, 54b... Engaging portion, 55b.
...Engaging portion, 37a, 37b...First and second cam portion, 63...Fixed guide, 64...Erasing head, 6
5... Fixed guide part, 66... Second inclined guide,
67...Second guide.

Claims (1)

[Claims] A magnetic recording/reproducing device in which a magnetic tape wound around a tape cassette loaded in a cassette holder is pulled out and mounted on a cylinder, into which the tape cassette is inserted. A cassette loading member that is loaded into a cassette holder, a holding member that positions the tape cassette inserted into the cassette loading member, and a lock that unlocks the cassette lid of the tape cassette inserted into the cassette loading member. a release member; a control means for controlling the holding member and the lock release member in conjunction with the loading operation of the cassette loading member; a control means for moving the cassette holder in and out of the cabinet; A magnetic recording and reproducing apparatus comprising: a cassette moving mechanism that accommodates a tape cassette in the cabinet and positions the cylinder with respect to an opening of the tape cassette.