JPH0725878Y2 - Lid opening device for rotary head type tape player - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rotary head type tape player used for DAT and the like, and in particular, by opening a lid at a front end of a cassette pack to be loaded, Lid opening device for exposing the tape of FIG.

[Conventional technology]

FIG. 4 shows the front part of the cassette pack C for DAT in a side view.

In this type of cassette pack C, a lid 1 is rotatably supported by a pin 2 at its tip. When the cassette pack C is mounted in the cassette holder and the slider 3 provided at the bottom of the cassette pack C slides backward,
The lock of the lid 1 is released, and the lid 1 is ready to be released. On the other hand, a lid opening mechanism is provided on the side of the drive unit in which the cassette pack C is loaded, and when the cassette pack C is moved to the tape loading position and loaded on the reel stand, the lid opening mechanism is used. The lid 1 is opened and the tape is exposed at the leading end Ca of the cassette pack C. Then, the magnetic tape in the cassette pack C is pulled out by the tape loading mechanism and wound around the rotary head device.

FIG. 4 shows a conventional example in which a fixed opening projection 5 is provided on the unit side as a lid opening mechanism. In this conventional example, when the cassette pack C held by the cassette holder descends toward the reel stand of the unit, the tip of the lid 1 comes into contact with the tip of the opening protrusion 5. Then, the lowering operation of the cassette pack C causes the lid 1 to be opened by the opening protrusion 5.

FIG. 5 shows a lid opening mechanism according to another conventional example. In this conventional example, a rotary arm 6 is pivotally supported by a side plate of the unit or the like around a shaft 7, and a pin 8 at the tip thereof faces the lower side of the lid 1. At the same time as the cassette pack C descends in the direction of the reel stand, the rotary arm 6 is driven in the direction of the arrow by a drive mechanism (not shown),
By this rotation operation, the pin 8 is configured to rotate and open the lid 1.

[Problems to be solved by the device]

In the above-mentioned conventional example, first, in the structure shown in FIG. 4, since the opening projection 5 is still fixed, the descending distance of the cassette pack C is secured by the length necessary to open the lid 1. It is necessary. Therefore, there is a drawback that the height of the entire device becomes large.

Further, in the conventional example shown in FIG. 5, since the lid 1 is opened by the turning locus of the pin 8, the descending distance of the cassette pack C can be made smaller than that in the conventional example of FIG. However, in this conventional example, as shown in FIG. 5, the rotation restriction of the pin 8 is opposite to the downward direction A of the cassette pack C to be loaded, as indicated by an arrow α. Therefore, in order to change the downward drive force of the cassette holder holding the cassette pack C into the rotational force of the rotary arm 6, a mechanism for changing the power acting direction is required, and the drive mechanism becomes very complicated.

The present invention solves the above-mentioned conventional problems, and provides a lid opening device for a rotary head type tape player that can open the lid of a cassette pack without applying a complicated force, without requiring a complicated power conversion mechanism. Is intended.

[Means for Solving the Problems]

A lid opening device of a rotary head type tape player according to the present invention holds a tape drive mechanism provided at a bottom portion of an apparatus main body and a cassette pack having a rotatable opening / closing lid at a front portion thereof and is separated from the bottom portion. Cassette holder that is movable from the closed position to the bottom direction, a rotation member that is rotatably supported by the apparatus main body and that rotates together with the movement of the cassette holder toward the bottom direction, and a cassette holder of the rotation members. And a cassette holder that is rotatably supported by a portion that rotates in a direction opposite to the moving direction of the cassette holder and a cassette holder without tilting the lid opener when the rotating member provided on the apparatus main body rotates. And an arc-shaped guide portion for guiding in the opposite direction, and the opening / closing lid is opened by relative movement of the lid opener and the cassette holder. It is.

[Action]

In the above means, when the cassette holder in which the cassette pack is inserted moves in the direction of the cassette loading position having the reel stand or the like, the rotating member rotates following the movement of the cassette holder, The lid opener connected to the member moves in the lid opening direction. At this time, the lid opener is guided by the arc-shaped guide portion provided on the apparatus main body side and moves without inclining the lid contact surface. The relative movement between the lid opener and the movement of the cassette pack opens the lid of the cassette pack. Here, since the lid opener is guided by the arc-shaped guide portion and moves in the lid opening direction, a complicated mechanism for operating the lid opener becomes unnecessary.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings of FIGS.

1 and 2 are side views of a rotary head type tape player showing a lid opening device, and FIG. 3 is a perspective view showing a structure of a main part thereof.

In FIGS. 1 and 2, reference numeral 10 is a chassis of a rotary head type tape player. As shown in FIG. 2, the chassis 10 is provided with a rotary head device 11 and a tape drive mechanism such as a reel stand. Side plates 12 are fixed to both sides of the chassis 10. The chassis 10 and side plates
The device body is composed of 12 and. The chassis 10 is located at the bottom of the apparatus main body, and the tape drive mechanism is arranged on the bottom. The side plate 12 is formed with an arc-shaped first guide groove 12a and an arc-shaped second guide groove 12b.

A driving member 14 that functions as a rotating member is provided inside the side plate 12. As shown in FIG. 3, support shafts 13 are provided on both sides of the drive member 14, which are inserted into the side plate 12, and the drive member 14 is rotatably supported with respect to the side plate 12. A pin 15 is provided at the right end of the driving member 14 in the figure. As shown in FIG. 1, the pin 15 projects outward from a window 12c formed in the side plate 12, and the pin 15
A torsion spring 17 is attached between the pin 16 and the pin 16 provided on the side plate 12. This torsion spring
As shown in FIG. 1, due to the elastic force of 17, when the drive member 14 is rotating counterclockwise about the support shaft 13 as a fulcrum, it is urged in the same direction, and as shown in FIG. The drive member 14 is biased in the same direction when the drive member 14 is rotating clockwise about the support shaft 13 as a fulcrum. Code 18
Is a cassette holder. The cassette pack C is inserted into the cassette holder 18 from the direction of the arrow in FIG. The cassette holder 18 is rotatably supported by a pin 15 (a pin on which a torsion spring 17 is hooked) provided on the drive member 14. A protrusion 18a extending downward in the drawing is formed on the cassette holder 18, and a pin 19 is fixed to the protrusion 18a. This pin 19 is the first pin formed on the side plate 12.
Is inserted in the guide groove 12a. The drive member 14 rotates about the support shaft 13 as a fulcrum. At this time, since the pin 19 of the cassette holder 18 is guided by the first guide groove 12a, the cassette holder 18 is substantially parallel without tilting. It moves up and down with respect to the chassis 10 in the posture.

Reference numeral 21 is a lid opener. The lid opener 21 has a substantially triangular shape, and an upper portion thereof is bent to form a contact surface 21a for the tip of the lid 1 of the cassette pack C. A support hole 21b is formed in the lid opener 21, and the support hole 21b is rotatably supported by a pin 22 provided at the left end of the drive member 14 in the drawing. A pin 23 is provided at the lower portion of the lid opener 21, and the pin 23 is inserted into the second guide groove 12b formed in the side plate 12 as shown in FIG.

Next, the operation will be described.

FIG. 1 shows a state in which the drive member 14 is rotated counterclockwise about the support shaft 13. The cassette holder 18 is raised together with the drive member 14. In this state, the cassette pack C is inserted into the cassette holder 18 from the right side in the drawing of FIG. 1 (the direction of the arrow in FIG. 3). At this time, the slider 3 at the bottom of the cassette pack C moves to the cassette holder 18
When the cassette pack C hits the claw 18b (see FIG. 3), the slider 3 is relatively displaced rearward, and the lid 1 is unlocked. After that, the drive member 14 is driven clockwise by the drive mechanism (not shown) with the support shaft 13 as a fulcrum. At this time, the cassette holder 18
19 is guided by the first guide groove 12a and descends to the tape drive portion on the surface of the chassis 10 in a parallel posture.

In the operation shown in FIGS. 1 to 2, when the drive member 14 rotates clockwise about the support shaft 13, the lid opener 21 is pulled up by the pin 22 provided on the drive member 14. At this time, the pin 2 moves in an arcuate locus around the support shaft 13. Also at this time the lid opener
The pin 23 provided on the guide 21 is guided to the second guide groove 12b of the side plate 12, and by this guiding operation, the upper contact surface 21a of the lid opener 21 rises in a substantially horizontal posture without tilting. Therefore, the lid 1 is gradually opened by the relative movement of the cassette pack C that descends together with the cassette holder 18 and the lid opener 21 that rises, and as shown in FIG. 1 is fully opened. This lid opening operation will be described in detail. In FIG. 1, the tip of the lid 1 faces the contact surface 21a of the lid opener 21 at a minute interval. When the drive member 14 rotates clockwise about the support shaft 13 as a fulcrum, the pin 22 supporting the lid opener 21 rotates in a direction away from the main body of the cassette pack C, as indicated by β in FIG. To do. In addition, since the pin 23 is guided by the second guide groove 12b of the side plate 12, the lid opener 21 moves the contact surface 21.
While a is in a substantially horizontal posture, it is translated diagonally upward and to the left as shown by an arrow B in FIG. This contact surface 21a
Since the moving direction of (1) coincides with the direction of the rotational trajectory of the tip of the lid 1, the lid 1 can be smoothly opened without applying an excessive force.

In the illustrated embodiment, the contact surface 21a of the lid opener 21 is
Although it rises in a substantially horizontal posture, the rise in the horizontal posture does not need to be a strict parallel movement, and a slight inclination does not affect the lid opening operation.

〔effect〕

As described above, according to the present invention, since the lid is driven upward with respect to the cassette pack by the operation of the rotating member, the substantial descending distance of the cassette pack can be shortened. Further, since the contact surface of the lid opener rises substantially in parallel, the lid can be opened in a natural state. Further, since the lid opener is guided by the arc-shaped guide portion provided on the apparatus main body side and moves in parallel, a complicated drive mechanism for driving the lid opener is unnecessary.

[Brief description of drawings]

FIGS. 1 to 3 show an embodiment of the present invention. FIGS. 1 and 2 are side views showing the operating state of a rotary head type tape player, and FIG. 3 is a perspective view showing the main part thereof. FIG. 4, FIG. 5 and FIG. 5 are partial side views showing a conventional lid opening device. C ... cassette pack, 1 ... lid, 10 ... chassis, 12 ...
Side plate, 12b ... Guide groove, 13 ... Support shaft, 14 ... Driving member, 18
… Cassette holder, 21… Lid opener, 23… Pin.

Claims (1)

[Scope of utility model registration request] 1. A tape drive mechanism provided at the bottom of the main body of the apparatus and a cassette pack having a pivotable opening / closing lid at the front, which moves from a position apart from the bottom toward the bottom. And a rotatable member that is rotatably supported by the main body of the apparatus and that rotates together with the movement of the cassette holder in the bottom direction, and the rotatable member that rotates in the direction opposite to the moving direction of the cassette holder. A lid opener that is rotatably supported by the moving part, and an arc shape that is provided on the device body side and guides the lid opener in the opposite direction to the cassette holder without tilting when the rotating member rotates. A lid opening device for a rotary head type tape player, wherein the opening / closing lid is opened by relative movement between the lid opener and the cassette holder.