JPS62239362A - Cassette loading device - Google Patents

Abstract

PURPOSE:To completely perform a cassette draw-in action as well as the control of the position and direction of a tape cassette after it is drawn in, by securing an interlocking action between a cassette abutting part and a cassette draw-in hook and setting the shift distance of a cassette drawn-in hook pawl given in a cassette draw-in direction at the value larger than the shift distance of the cassette abutting part. CONSTITUTION:A cassette draw-in hook 27 is pushed up to a non-hook position by a hook release member 19 and a tape cassette 1 is inserted. Then a tape cassette insertion detecting means is actuated to drive a motor 32 and a groove cam 35 is rotated counterclockwise. Thus a cassette push-out arm 2 is turned right to shift a cassette draw-in hook 27 to the right. The hook 27 interlocks a loading grip 6 to draw in the cassette 1. Then the cassette 1 is shifted to the play position together with a cassette holder 14 by the rotation of the cam 35. Then a motor 32 is stopped. Here a complete interlocking state of the cassette 1 is secured when a draw-in action of the cassette 1 is started since the shift distance of a draw-in hook pawl 28 is set at the value larger than the shift distance of a cassette contact part 25 of a tape cassette push-out member.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a newly proposed cassette loading device for a cassette recorder using a digital audio tape cassette.

2. Description of the Related Art In recent years, digital audio recorders have been proposed, and tape cassettes used therein have also been newly proposed.

A recess called a loading grip is formed on the top surface of this digital audio cassette, and can be used for insertion into and removal from equipment.

However, regarding the automatic loading of tape cassettes using this loading grip, there is a technique introduced in Japanese Utility Model Application Publication No. 194737/1983.

Problems to be Solved by the Invention However, in the configuration introduced in the above-mentioned Japanese Utility Model Publication No. 60-194737, since the amount of movement between the pawl and the abutting wall is equal, it is difficult to ensure that the pawl engages with the loading grip. , a gap is required between the abutting wall and the front of the cassette, and if this gap exists, there is a problem that the cassette cannot be pulled in parallel and may not align well with the positioning hole when dropped into the playing position. Was.

In view of the above-mentioned problems, the present invention provides a cassette loading device that can reliably pull in a tape cassette by using a loading grip and can reliably control the position and orientation after being pulled in.

Means for Solving the Problems In order to solve the above problems, the cassette loading device of the present invention has a cassette abutting portion of a cassette pushing member that moves in conjunction with the tape cassette retraction and pushing operations, and a tape cassette A cassette retracting hook that engages with a provided loading grip to pull in an inserted tape cassette is interlocked with each other, and the amount of movement of the cassette retraction engaging claw in the tape cassette retraction direction is set to be greater than the amount of movement of the cassette abutting portion. It has a larger structure.

Operation According to the present invention, with the above-described configuration, the claw portion can move a large amount, so that it can be secured to the loading grip with a sufficient margin, and at the same time, the position and orientation of the tape cassette can be regulated by following the cassette abutting portion when retraction is completed.

EXAMPLE Hereinafter, a cassette loading device according to an example of the present invention will be described with reference to the drawings.

FIG. 9 is a top perspective view of the proposed tape cassette. 1 is the cassette body, 2 is a rotating lid that opens and closes by rotating the front opening, and 3 is a sliding lid that opens and closes the opening provided on the bottom of the cassette body. A sliding lid that opens and closes and is locked in two open and closed positions and is always biased by a spring in the closing direction. 4 is a notch provided on the lower edge of the rotating lid 2.

The front edge of the sliding lid 3 is peeking out from inside. 5 is also a notch provided on the lower edge of the rotating lid 2, which communicates with a protrusion guide groove provided on the lower surface of the sliding lid 3 for releasing the locking of the sliding lid. 6 is a loading grip with a recess for pulling in the cassette. FIG. 10 is a bottom perspective view thereof.

In the same figure, 7 is a protrusion guide groove for unlocking, 8° and 9 are locking holes, and 1o is a locking claw that is attached to the tip of an elastic arm that is integrally formed with the cassette body 1 on the lower surface of the cassette body 1. and is always energized outward. FIG. 11 is a side view showing the sliding lid 3 and the rotating lid 2 in an open state. With this configuration, the rotating lid 2 can be opened after the sliding lid 3 is opened.

FIG. 1 is a top view showing the tape cassette retracted state of the cassette loading device (excluding the tape cassette) in the first embodiment of the present invention. In Figure 1,
11 is a chassis, 12 and 13 are frames, 14 is a cassette holder, 16 is a holder bottom plate, 16 is a protrusion for releasing the locking of the sliding lid, and 17 is a protrusion for opening the sliding lid, all of which are cut out from the holder bottom plate. ing. 18 is a cassette pressing spring; 19 is a disengaging member that hangs over the cassette holder while stopping the cassette pressing spring 1B; and 2o is a cassette pressing spring 1.
8 is a cassette holding roller attached to the tip, 21 is a holder guide bin attached to both left and right sides of the cassette holder 14, 22 is a holder foot arm, 23 is a pivot shaft of the holder shift arm 22, and 24 is a cassette. Push-out arm, 25 is a cassette contact part, 26 is a pivot shaft of the cassette push-out arm 24, 27 is a cassette retracting hook,
Reference numeral 28 denotes an engaging claw, and 29 a stopper for regulating the position of the cassette retracting hook 2, which is cut out from the cassette retracting hook 27. 3o is a rotating shaft of the cassette retracting hook 27, which is lower than the loading grip 6. 31 is its bearing, 32 is a cassette loading motor, 33
is the worm attached to the motor shaft, 34 is the worm 3
The intermediate wheel 36, which reduces and transmits the rotation of the intermediate wheel 34, is a cam gear that rotates with the rotational force from the intermediate wheel 34, and has one closed groove cam on one side. 36 and 37 are cam rollers that release the force from the grooved cam 43.

38 is a connecting rod that transmits the force from the grooved cam 43 to the holder shift arm 22. A pin 39 connects the connecting rod 38 and the holder shift arm 22. 4o is a front positioning pin of the tape cassette at the playing position, and 41 is a rear height regulating bin.

FIG. 2 is a side view showing the tape cassette having been inserted. In FIG. 2, 1 is a tape cassette, 42
is the rotating shaft of the cam gear 35, 43 is the grooved cam, 44 is the rotating arm, 46 is its rotating support shaft, 4θ is the connecting pin between the rotating arm 44 and the connecting rod 38, and 47 is the upper and lower part of the cassette holder 14. A guide groove is provided in the frame 12.13 to guide the movement. 48 is a spring that biases the tape cassette retracting hook 27 in the counterclockwise direction.

The operation of the cassette loading device constructed as described above will be explained below with reference to FIGS. 2 to 6.

Before inserting the tape cassette, the groove cam 36 is in the position shown in FIG.
is pushed up to the disengaged position. When the tape cassette 1 is inserted in this state, a tape cassette insertion detection means (not shown) operates to drive the motor 32 and rotate the groove cam 36 counterclockwise. Then, the cassette push-out arm 24 rotates to the right, moves the cassette retracting hook 2a to the right, passes through the state shown in FIG. 6, or engages directly with the loading grip 6, and then passes through the state shown in FIG. The cassette is retracted, and after the cassette reaches the state shown in FIG. 3 when retraction is completed, the grooved cam 36 continues to rotate, and the cassette holder 14 is transferred to the playing position, and the state shown in FIG. 4 is reached, and the motor 32 stops.

When the tape cassette 1 is to be taken out after deflation, the motor 32 is operated again to raise the cassette holder 14 by rotating the grooved cam 9o0. The cassette 1 is extruded. When the tape cassette is pushed out to its maximum extent as shown in FIG. 2, the engaging claw 28 is separated from the loading grip 6 and the tape cassette can be taken out.

FIG. 7 is a detailed view of the main parts at the end of the cassette retraction shown in FIG. 3, and as can be seen by comparing it with the state at the beginning of retraction shown in FIG. The gap between the tape cassette and the tape cassette is reduced, and the orientation of the tape cassette is gradually regulated during the retracting operation, allowing smooth positioning when moving to the performance position.

As described above, according to this embodiment, since the amount of movement of the tape cassette retraction engaging claw is made larger than the amount of movement of the cassette abutting portion of the tape force cent push-out member, it is possible to ensure the retention at the start of retraction, and At the end of retraction, the tape cassette can be brought into contact with the cassette contact portion to regulate the position and orientation of the tape cassette. Further, by increasing the width of the cassette abutting portion to one-half or more of the tape cassette width, the orientation regulating force can be further improved. Further, since the cassette push-out member is constituted by a rotating member and the cassette retracting hook is provided thereon, it is possible to obtain a difference in the amount of movement with an extremely simple structure.

FIG. 8 is a side view showing another embodiment of the cassette retracting hook, in which the cassette retracting hook is formed of an elastic body such as a plate spring, is provided on the cassette pushing member 24, and has a pivot shaft. Although it does not use a rotation support shaft, the position of the point corresponding to the rotation support shaft is also clear, and the operation is substantially the same as that using a rotation support shaft.

If the position of the pivot shaft is set lower than the height of the engagement part of the locking pawl in this way, the locking pawl will be securely held, and it will be possible to securely hold the locking pawl using only the weight of the cassette retracting hook without using spring force. It is also possible to obtain a retracting action, which simplifies the configuration.

Effects of the Invention As described above, the present invention makes the amount of movement of the locking pawl of the cassette retracting hook larger than the amount of movement of the cassette abutting portion of the cassette pushing member, thereby reducing the gap between the tape cassette and the locking pawl. This ensures that the tape cassette gradually decreases, and furthermore, the positioning and orientation can be controlled by the contact between the front surface of the tape cassette and the cassette abutting portion at the end of retraction.

[Brief explanation of drawings]

Fig. 1 is a top view of the cassette loading device according to an embodiment of the present invention, Fig. 2 is a side view of the tape cassette inserted, Fig. 3 is a side view of the tape cassette in the finished state, and Fig. 4 is the same tape cassette. FIG. 6 is a side view of the main part showing the state before the locking pawl is engaged. FIG. 6 is a side view showing the locking pawl in the engaged state. FIG. 8 is a side view of another embodiment of the cassette retracting foot; FIG. 9 is a top perspective view of the proposed tape cassette; FIG. 10 is a bottom perspective view thereof; FIG. 11 is a side view of the lid open state. 1...Cassette body, 6...Loading grip, 14...Cassette holder, 24...
...Cassette extrusion member, 2...Cassette retraction hook, 28...Engaging claw, 43...
...Groove cam. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4 Figure 5 Figure 6 Factors Figure 7
Figure 8

Claims (1)

[Scope of Claims] (1) The cassette abutting portion of the cassette push-out member that moves in conjunction with the retraction and push-out operations of the tape cassette engages with a loading grip provided on the tape cassette to prevent the inserted tape cassette from being inserted. A cassette loading device characterized in that a cassette retracting hook having a retracting engaging claw is interlocked with each other, and the amount of movement of the cassette retracting engaging claw in the tape cassette retracting direction is larger than the amount of movement of the cassette abutting portion. Device. (2) The cassette retracting hook is rotatably supported on the rotary member, and the position of the support is set higher than the height of the cassette abutting portion of the cassette pushing member. The described cassette loading device. (3) The cassette loading device according to claim 2, characterized in that a cassette contact portion is provided on the rotating member. (4) The cassette loading device according to claim 1, characterized in that the width of the cassette abutting portion is approximately one-half or more of the width of the tape cassette. (5) During the retracting operation of the tape cassette 3. The cassette loading device according to claim 2, wherein the pivot position of the cassette retraction hook is located below the engagement claw position. (6) The gap between the front surface of the tape cassette and the cassette contact portion is gradually reduced during the tape cassette retraction operation by the cassette retraction hook and the loading grip. Set loading device as described in section. (7) The cassette loading device according to claim 2, wherein the locking pawl and the loading grip are engaged by the weight of the cassette retracting hook.