JPH0516675Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a method for recording and recording by pulling out the magnetic tape housed inside the cassette half outside the cassette half.
This invention relates to an improvement of a cassette half loading mechanism for an R-DAT (rotary digital audio tape recorder) device for playback.

[Prior Art] Various loading mechanisms have been devised and commercialized in order to place this type of conventional cassette half at a predetermined position within a cassette tape recorder. An example of the above loading mechanism is VTR
As is often used in
There is a so-called slot-in mechanism that moves the cassette holder horizontally and vertically by inserting the cassette half into a slot portion having a cassette holder, and places the cassette half at a predetermined position.

[Problems to be solved by the invention] In this way, in the past, attempts were made to utilize VTR loading technology, but the R-
DAT devices require actions such as releasing the protective cover locking mechanism and sliding the protective cover on the bottom of the cassette half, so it has been impossible to directly apply this type of technology to VTRs. Furthermore, from the perspective of inserting and removing the cassette half, just by placing the recording medium on the tray section, playback and recording operations will be performed automatically, as is used in CD (compact disc) players. However, since the cassette half for R-DAT requires actions such as sliding the protective cover on the bottom of the cassette half and releasing the lid to pull the magnetic tape out of the cassette half, this mechanism is not suitable for CD players. It is difficult to carry out the above operation while the cassette half is still placed on the tray, and it has been difficult to employ this loading mechanism.

[Means for solving the problem] This invention consists of a cassette holder that holds a cassette half, a holder support that supports the cassette holder vertically movably, and a cassette half press that supports the holder support horizontally. a chassis member that supports the cassette pressing member in a horizontally movable manner, a pair of pressing portions formed on the pressing member and pressing each side end surface of the cassette half, a drive motor, and a chassis member that is rotated by the drive motor. a driving lever for moving the cassette holder; a driving force transmitting member for causing the drive motor to move the cassette half pressing member at a moving speed greater than the moving speed of the cassette holder; The R-DAT device comprises means for cutting off the driving force at the rearward position, and means for reconnecting the driving force prior to forward movement of the cassette half pressing member from the rearmost position.

[Example] Hereinafter, an example of this invention shown in the drawings will be described in detail.

In FIG. 1, reference numeral 1 denotes a cassette holder, and a cassette half holder 11 has a reel (not shown) that is fitted into and driven by a hub (not shown) located in the opening 53 of the cassette half 5 shown in FIG. figure)
A protrusion 13 is formed on the front edge of the protective cover 51 for pressing the locking pin 52 of the protective cover 51 slidably attached to the lower surface of the cassette half 5 to release the locked state. A locking pin 14 that engages and slides the protective cover 51 as the cassette half 5 moves.
are formed respectively. 15 also presses the cassette half 5 in the direction of the holder 11 to hold the holder 1.
a spring body held within, 17 a slider part, 16
is a drive pin erected on the outer surface of the slider section 17.

Reference numeral 2 denotes a holder support that supports the cassette holder 1 in a vertically movable manner, in which the drive pin 16 protrudes from a hole 21 formed in the side surface, and the slider portion 17 connects to a slide groove 22 formed in the vertical direction. Engagement achieves the vertical movement. Further, a cassette half support surface 24 is formed at the front end of the holder support 2. Reference numeral 3 designates a cassette half pressing member that supports the holder support 2 so as to be able to slide in the horizontal direction, and has an upright portion 31 formed at its front end for pressing the rear end surface side of the cassette half, and is connected to the upright portion 31 as appropriate. Pressing pieces 32 are formed at intervals to press against the front end surface of the cassette half. and,
The protruding strip 23 formed on the lower edge of the outer surface of the holder support 2 engages with the rail groove 33 formed on the inner surface of the cassette half pressing member 3, so that the holder support 2 is moved against the cassette pressing member 3. It is supported so that it can move freely in the horizontal direction. Further, a hole 34 is formed in the side surface of the cassette half pressing member 3, into which the drive pin 16 is inserted so as to allow the drive pin 16 to move during a predetermined movement of the cassette holder 1. Further, a rack 35 is formed on the lower surface of the cassette half pressing member 3 as a driven portion driven by the motor 8 via a driving force transmission mechanism, and a toothless portion 35a is formed at the front end of the rack 35. ing.

In Fig. 2, 4 is the cassette half pressing member 3.
It is a chassis member that supports horizontally movably, and has protruding strips 42 formed on the inner surface of each side plate 41.
The above-mentioned movable support is achieved by engagement with a rail groove 36 formed on the outer surface of the cassette half pressing member 3. Further, the support side plate 41 is formed with a substantially inverted L-shaped slit 43 through which the drive pin 16 is inserted to slide and drive the cassette holder 1 in the horizontal and vertical directions.

Reference numeral 6 denotes a drive lever for moving the drive pin 16 of the cassette holder;
and a slit 6 into which the drive pin 16 exposed by passing through the substantially L-shaped slit 43 of the support side plate 41 engages.
1 is formed, and the lever 6 is connected to the supporting side plate 41.
A worm gear 7 is rotatably supported on a shaft and attached to a rotating shaft of a motor 8 as shown in FIG. 2a.
1. A worm wheel 72 meshing with the worm gear 71, a first gear 73 coaxially attached to the worm wheel 72, and a first gear 73.
The second gear 74 meshes with the second gear 74, and the third gear 75 is attached coaxially with the second gear 74. The driving force transmission mechanism includes the second gear 74 and the third gear 75. The rotation of the motor 8 is transmitted at a reduced speed (approximately 1/200 in the embodiment). Further, a fourth gear 77 is attached to a portion of the rotating shaft 76 of the second and third gears 74 and 75 located between the supporting side plates 41 and 41, and a shaft is attached to the fourth gear 77 on the inner surface of the supporting side plate 41. The supported pinion 78 meshes. The pinion 78 is arranged to mesh with the rack 35 of the cassette half pressing member. Furthermore, a push-out pin 78a is attached to the pinion 78 so as to rotate together with the pinion 78.

Regarding the operation of the configuration of this embodiment, Figures 3a to 3
Referring to Fig. d, Fig. 3a shows a case where the cassette half pressing member 3 is at the predetermined forwardmost position (to the left in the figure), and the holder support 2 and the cassette holder 1 are also at the forwardmost position.

In this state, the rear end surface of the cassette half 5 is brought into contact with the vertical surface of the upright part 31 of the cassette half pressing member 3, and the cassette half 5 is placed across the front part of the cassette holder 1 and the support surface 24 of the cassette half support part 2. .

Next, the motor 8 is rotationally driven in accordance with the operation of an operation button (not shown), etc., and the transmission mechanism 71, 72, 73, 74, 75,
The drive lever 6 rotates clockwise in the figure via the drive lever 6, and the drive pin 16 engaged with the drive lever 6 moves to the right in the figure. The holder support 2 on which the cassette holder 1 is mounted so as to be movable only in the vertical direction is similarly moved. On the other hand, the pinion 78 meshed with the rack 35 attached to the cassette half pressing member 3 is rotated by the rotation of the second gear 74 via the fourth gear 77, thereby moving the cassette half pressing member 3 to the right in the drawing. The specifications of each driving force transmitting component are set so that the moving speed of the cassette holder 1 and the cassette half pressing member 3 is large (approximately 1.7 times as high in the embodiment) as the moving speed of the cassette half pressing member 3. Due to the speed difference, the cassette half 5 moves during the movement (Fig. 3b).
It moves in the direction of the cassette holder 1 pressed by the upright portion 31 of the cassette half pressing member 3.

In this state, the protrusion 13 formed on the cassette half holder 11 is attached to the lock pin 5 of the cassette half.
2, and as shown in FIG. 5a, the locking pin 1
4 is not in contact with the protective cover 51, so the protective cover 51 is not opened.

When the drive lever 6 further rotates and the cassette half pressing member 3 reaches the predetermined rearmost position, the third c.
As shown in the figure, the cassette half has been completely moved to the cassette holder, and the protrusion 13 formed on the cassette half holder 11 comes into contact with the lock pin 52 of the cassette half to release the locked state, as shown in Figure 5b. The locking pin 14 is attached to the protective cover 5.
1, and the protective cover 51 is opened in response to rightward movement of the cassette half 5. At the rearmost position, the toothless portion 35a of the rack 35 is located on the pinion 78, so the pinion 78 becomes idle and the movement of the cassette half pressing member 3 is stopped.

Further, when the drive lever 6 rotates, the drive pin 16 of the cassette holder moves downward along the vertical portion of the L-shaped slit 43, and as a result, only the cassette holder 1 moves downward and reaches a predetermined position as shown in FIG. 4e. descend to the position. In this lowered position, the drive reel passes through the hole 12 of the pedestal 11 and the hole 53 of the protective cover and engages with the hub in the cassette half, making the magnetic tape ready for transport. Further, although not shown, an appropriate lid opening means may be employed, such as providing a fixing pin that comes into contact with the lid 54 and opens the lid 54 in response to the lowering movement of the cassette half 5.

When it is desired to take out the cassette half 5 after recording or playback, the motor 8 rotates in the opposite direction in conjunction with an operation button (not shown), and the drive lever 6 rotates counterclockwise to remove it from the 3d state. The state shown in FIG. 3c is reached. During the vertical upward movement, the pinion 78 is idle in the toothless portion 35a of the rack, so the cassette half pressing member 3 does not move.

Then, by further rotation of the drive lever 6, the third
As shown in Figure e, the push-out pin 78a that rotates together with the pinion 78 is the cassette half pressing member 3.
As a result, the rack 35 and pinion 7 are pushed to the left in the figure.
8 is resumed, and the cassette half pressing member 3
is moved to the left at approximately 1.7 times the speed of the holder support 2 (Fig. 3b). As a result, the cassette half is moved to the left by the pressing piece 32 in contact with the front edge surface of the cassette half 5, and when the cassette half pressing member 3 reaches the predetermined forwardmost position, it is moved to the ejectable position ( Figure 3a).

[Effects of the invention] According to the invention described above, by making the cassette half pressing member move at a speed greater than the moving speed of the cassette holder driven by the drive lever, the cassette half is pressed against the cassette holder by a predetermined movement amount of the cassette half pressing member. move to the specified position,
Mechanically, it is extremely simple because the protective cover opening operation can be achieved and the predetermined operation can then be performed by appropriate known means. Further, according to this invention, the cassette half can be automatically moved to the recording/playback operation position simply by placing the cassette half thereon, thereby making the operation extremely simple. Further, since the cassette half is moved by pressing the front end and rear end surfaces, stable operation can be achieved regardless of the shape of the upper surface of the cassette half, and there is also a driving point for moving the cassette half pressing member.
Since the pressing points of the cassette halves can be brought close to each other, the related operations between the two are stabilized, and the mechanism can be simplified and downsized. It has the following effects.

[Brief explanation of the drawing]

1 and 2 are exploded perspective views of essential parts of the cassette tape recorder device according to the embodiment of the invention, FIG. 2a is a sectional view of the driving force transmission mechanism of the cassette tape recorder device according to the embodiment of the invention, and FIGS. 3a to 3e. The figures are a side view of the main parts explaining the operation of the cassette tape recorder device according to the embodiment of this invention, FIG. 4 is a perspective view of the cassette half, and FIGS. 5a and 5b are respectively illustrating the opening and closing operation of the protective cover of the cassette half. FIG. 5...Cassette half, 1...Cassette holder, 2...Holder support, 3...Cassette half pressing member, 4...Sheath member, 31, 32
. . . a pair of pressing parts, 8 . . . a driving force source, 6 . . . a driving lever.

Claims (1)

[Scope of utility model registration request] A cassette holder 1 that holds a cassette half 5, a holder support 2 that supports the cassette holder 1 vertically movably, a cassette half pressing member 3 that supports the holder support 2 horizontally, and a cassette press member 3 that supports the cassette half 5. A chassis member 4 that supports the member 3 in a horizontally movable manner, a pair of pressing portions 31 and 32 formed on the pressing member 3 and pressing each side end surface of the cassette half 5, a driving force source 8, and the driving force. a drive lever 6 which is rotated by a power source 8 to move the cassette holder 1; and a drive lever 6 which is rotated by a power source 8 to move the cassette holder 1;
a driving force transmitting member for moving the cassette half pressing member 3 at a moving speed greater than the moving speed of the cassette holder 1; a means for cutting off the driving force at a rearmost position of the cassette half pressing member 3; means for recombining the driving force prior to the movement from the rearmost position to the front, and a driven part is formed on the lower surface of the cassette half pressing member 3 to be horizontally moved by the driving force. The R-DAT device is characterized by: