JPH0474347A - Cassette ejector - Google Patents

Abstract

PURPOSE:To easily draw out a cassette by providing a cassette holder with a lock means for locking a cassette ejecting arm in a cassette ejecting position and releasing the lock by inserting the cassette into the cassette holder. CONSTITUTION:The cassette holder 5 is provided with the lock means 28 for locking the cassette ejecting arm 17 in the cassette ejecting position E and releasing the lock by inserting the cassette into the cassette holder. In this case, the cassette ejected upward out of the cassette holder 5 by the cassette ejecting arm 17 can be prevented from being drawn into the cassette holder 5 due to dead weight of the cassette. By this method, the cassette after returning to a cassette inserting position A by the cassette holder 5 is easily picked and drawn out by hand form the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette extrusion device that automatically extrudes a cassette from within a cassette holder, which is most suitable for application to a portable VTR.

[Summary of the Invention] The present invention rotates a cassette ejecting arm provided on the cassette holder to the cassette ejecting position when the cassette is moved back from the cassette retracting position to the cassette inserting position by the cassette holder. In a cassette extrusion device such as a porta-pull VTR that is designed to be pushed out, by locking the cassette extrusion arm at the cassette extrusion position, when used in a vertical loading system such as a porta-pull VTR, the extruded cassette will not be affected by its own weight. This prevents the cassette from being drawn into the cassette holder.

[Conventional technology]

The applicant of the present invention has proposed a cassette extrusion device for a VTR.
For example, the prior application described in Japanese Patent Application Laid-Open No. 60-231957 was filed earlier.

In this prior application, after the cassette is ejected from the cassette retracting position to the cassette inserting position by the cassette holder, the cassette is inserted into the cassette holder with the aim of making it easier to grab and remove the cassette with the hand inside the cassette holder. A cassette ejecting arm is rotatably attached to a cassette holder that reciprocates between an insertion position and a cassette retraction position, and the cassette ejection arm is rotated to the cassette ejection position when the cassette holder moves back from the cassette retraction position to the cassette insertion position. The cassette in the cassette holder is pushed out of the cassette holder.

[Problems to be Solved by the Invention] However, the prior application relates to a cassette invented for a front-loading VTR in which a horizontally inserted cassette is pulled horizontally from a cassette insertion position to a cassette retraction position by a cassette holder. This is an extrusion device.

Therefore, when this cassette extrusion device is applied to a porta-pull VTR and used in a vertical loading method in which a vertically inserted cassette is vertically pulled from the cassette insertion position to the cassette retraction position by the cassette holder, the cassette retraction f When moving the cassette vertically back from the cassette retraction position to the cassette insertion position,
The cassette ejecting arm that rotates to the cassette ejecting position allows the cassette to be pushed upward (outside of the cassette holder) once, but after the cassette is pushed out, the cassette falls into the cassette holder due to its own weight. If the cassette gets pulled in and you can't grab the cassette from the outside with your hands and pull it out of the cassette holder (5 problems).

SUMMARY OF THE INVENTION An object of the present invention is to provide a cassette pushing device in which a cassette pushing arm can be locked when the cassette pushing arm pushes a cassette out of a cassette holder.

[Means for Solving the Problems] In order to achieve the above object, the cassette extrusion capacity of the present invention is attached to a cassette holder, and when the cassette holder is moved back from the cassette retraction position to the cassette insertion position. The cassette push-out arm, which is rotated to the cassette push-out position and pushes out the cassette in the cassette holder to the outside of the cassette holder, is locked at the cassette push-out position.

The cassette holder is provided with a locking means that releases the lock when the cassette is inserted into the cassette holder.

[Function] In the cassette ejecting device configured as described above, when the cassette ejecting arm is rotated to the cassette ejecting position and the cassette is pushed out of the cassette holder, the cassette ejecting arm is locked by the locking means. be done.

[Embodiment] Hereinafter, an embodiment of a cassette extrusion device in which the present invention is applied to a portable VTR will be described with reference to the drawings.

First, Fig. 5 shows an overview of the portable VTR 1, and shows a VT with a handle 2 for linking.
A cassette insertion slot 4 is provided on the upper surface 3a of the R main body 6, and the V
A cassette holder 5 is vertically arranged in the TR main body 6 directly below the cassette insertion opening 4. This cassette holder 5 has a cassette insertion position A close to the cassette insertion opening 4,
A cassette retraction position B that is retracted vertically directly below the cassette retraction position B;
The cassette holder drive mechanism (not shown) moves the cassette in the directions of arrows a and b along an L-shaped locus between the cassette mounting position C and the cassette mounting position C, which has been moved horizontally to the side of the cassette. , is configured to be moved back in the direction a.

The portable VTR 1 is configured such that a small cassette 6 and a large cassette 7, which are different in size, can be selectively used.

That is, when loading a cassette, either the small cassette 6 or the large cassette 7 is inserted vertically into the cassette holder 5 from the cassette insertion opening 4 in the direction of the arrow EDc, and the cassette holder 5 moves from the cassette insertion position A to the cassette retraction position. B
After being pulled in vertically in the direction of arrow a, the cassette is moved horizontally in the direction of arrow mb to a cassette mounting position C, and the small cassette 6 or large cassette 7 is mounted in the cassette mounting position [C].

Thereafter, the magnetic tape 8 in the small cassette 6 or large cassette Z is pulled out vertically below these cassettes and loaded onto the rotary head drum 9, etc., for desired recording and reproduction.

When ejecting the cassette after recording and playback, after unloading the magnetic tape 8, the cassette holder 5 is moved horizontally from the cassette mounting position C to the cassette retracting position B-j in the direction of the arrow mark, and then moved to the cassette insertion position. arrow a
The small cassette 6 or the large cassette 7 is pushed out into the cassette insertion slot 4 by rising vertically to the direction i. And after this,
The small cassette 6 or the large cassette 7 is pinched by hand and pulled out from the cassette insertion slot 4 vertically in the upward direction of arrow C.

Next, according to FIGS. 1A to 4, the cassette extrusion device 1
1 will be explained. In this cassette pushing device 11, cassette holding arms, which will be described later, are attached symmetrically to the cassette holder 5, but only one cassette pushing arm is shown in one drawing, and the other cassette pushing arm is omitted.

First, a pair of left and right vertical support plates 12 are arranged on both left and right sides of the vertical left and right side plates 5a of the cassette holder 5. Then, these five right and left support plates 12 guide a plurality of guide rollers 16 attached to the left and right side plates 5a, and move the cassette holder 5 to the cassette insertion position A, the cassette retraction position B, and the cassette mounting position as described above. Along the L-shaped movement trajectory between C and arrow Ella, b direction and arrow b-
Guide it to reciprocate in direction a. The small cassette 6 is mounted on the front side (cassette insertion surface side) of the vertical bottom plate 5b of the cassette holder 5 in the left-right direction (
A pair of vertical small cassette insertion guides 14 are provided, which are positioned at the center in the left and right direction (in FIG. 1A). In addition, a two-handed cassette insertion guide 1 is provided on the bottom of the large cassette 7.
The large cassette 7 is positioned between the left and right side plates 5a inside the cassette holder 5. A cassette stopper 15 is provided at the lower end of the front side of the bottom plate 5b of the cassette holder 5, with which the lower end of the inserted small cassette 6 or large cassette 7 comes into contact.

A cassette extrusion arm 17 for extruding the small cassette 6 is attached to the rear side of the cassette holder 5 (opposite to the cassette insertion surface side) via a fulcrum shaft 18 to the cassette extrusion preparation position and the cassette extrusion preparation position shown in FIG. 1B. The cassette extrusion position E shown in FIG. 1A is rotatably mounted in the vertical directions of arrows d and d. This cassette push-out arm 17 is formed into a substantially single-letter shape, and a cassette push-out pin 19 provided at the tip of the longest arm 17a projects horizontally from the front side of the bottom plate 5b. Further, a lock pin 20 is provided at the tip of the intermediate arm 17b, and an arm abutting portion 21 is provided at the shortest arm 17c. And the fulcrum shaft 1
A cassette push-out auxiliary arm 22 is attached to the cassette push-out auxiliary arm 22 rotatably in the directions of arrows Efld and d, one end 22a of which is placed close to both the left and right support plates 12, and a large cassette detection pin 23 provided at the other end. It projects horizontally from the front side of the bottom surface 5b. A pair of spring locking portions 24a, 24 provided on the cassette ejection auxiliary arm 22 and the bottom plate 5b
Both ends of a tension spring 25, which is a biasing means, are locked to b,
By this tension spring 25, the cassette ejection auxiliary lever 22
is urged to rotate in the direction of arrow End. Then, the abutted part 26 provided at the lower part of the one end 22a side of this cassette ejecting auxiliary arm 22 abuts the arm abutting part 21 of the cassette ejecting arm 17 from above, and the cassette ejecting arm 17 It is rotationally biased in the d direction.

A lock arm 28 serving as a locking means is attached to the back side of the cassette holder 5 via a fulcrum shaft 29 so as to be rotatable in the vertical direction, that is, in the arrow e and e directions. On the lower surface of the tip 28a of the lock arm 28, there are two locking recesses 30 that engage with the locked bin 20 of the cassette ejecting arm 17 to lock the cassette ejecting arm 17 in the cassette ejecting preparation position and the cassette ejecting position E. , 31 are provided. Both ends of a tension spring 34 serving as a biasing means are engaged with a pair of spring engagement portions 32a and 32b provided on the lock arm 28 and the bottom plate 5b, and the tension spring 63 causes the lock arm 28 to 2
0 and is biased to rotate in the direction of arrow e.

Then, the cassette holder 5
A substantially triangular projection 34 for driving the cassette push-out arm 17 is provided at an intermediate position between the cassette insertion position A and the cassette retraction position B. The cassette push-out arm 17 also serves as a cassette insertion detection arm, and a cassette insertion detection sensor (not shown) for detecting the amount of rotation of the cassette push-out arm 17 is attached to the bottom plate 5bVC.

Next, the operation of the cassette extrusion device 11 configured as one or more will be explained.

First, FIG. 1A shows the state after the small cassette 6 is pinched by hand and pulled out upward from the cassette insertion slot 4, and the cassette push-out arm 17 is locked by the lock arm 28 at the cassette push-out position E. It's sat.

Further, FIG. 1B shows the state after the large cassette 7 is picked up by hand and pulled out from the cassette insertion slot 4, and the cassette push-out arm 17 is in the cassette push-out preparation position by the lock arm 28. Locked. In this state, the large cassette detection bin 23 is placed at a position higher than the cassette ejecting pin 19 by a step H.

Next, as shown in FIG. 2A in the state of FIG. 1A.

Insert the small cassette 6 from the cassette insertion slot 4 into the cassette holder 5.
Insert the arrow El'lc between the two-handed cassette insertion guide 14.
When inserted perpendicular to the direction, the lower end 6a of the small cassette 6
comes into contact with the cassette pusher pin 19 and rotates the cassette pusher arm 17 in the direction of arrow d' against the tension spring 25. At this time, since the locked bin 20 rotates the lock arm 28 in the direction of arrow e against the tension spring 36, the cassette push-out arm 17 is unlocked at the cassette push-out position E, and the cassette push-out arm 17 is ready to push out the cassette. The lower end 6a of the inserted small cassette B is rotated in the direction of arrow 8]d' until it reaches the position, and the lower end 6a of the inserted small cassette B comes into contact with the cassette stopper 15 and stops. Then, the lock arm 28 is moved back in the direction of arrow e' by the tension spring 66, and the locked bin 20
is locked again in the locking recess 30.

Also, at this time, the arm contact portion 2 of the cassette ejecting arm 17
1 pushes the abutted part 26 of the cassette push-out auxiliary arm 22 in the direction of the arrow d', so the cassette push-out auxiliary arm 22 also rotates in the direction of the arrow d' against the tension spring 25 along with the cassette push-out arm 17. Sanru.

A contact portion X for the protrusion 64 is formed at one end 22a of the cassette ejection auxiliary arm 22.

Also, the amount Y of the upper end 6a of the small cassette 6 protrudes upward from the cassette insertion opening 4 when the insertion of the small cassette 6 is completed.
, is very small.

After inserting this small cassette B, when the cassette holder 5 is drawn in vertically in the direction of arrow EAa from the cassette insertion position A to the cassette retraction position C shown in Fig. 2D, the cassette is pushed out as shown in Fig. 2B. One end 22a of the auxiliary arm 22 comes into contact with the protrusion 34 from above, and after the cassette ejecting auxiliary arm 22 escapes in the direction of arrow d' against the tension spring 25, as shown in FIG. As shown, the cassette push-out auxiliary arm 22 is moved back in the direction of arrow E (]d by the tension spring 25.

Next, after the above-mentioned recording and reproduction of the small cassette 6.

When the cassette holder 5 moves back vertically in the direction of arrow a from the cassette retracting position B to the cassette inserting position A, one end 22 of the cassette ejecting auxiliary arm 22
a comes into contact with the protrusion 34 from below, and as shown in FIG. 2F,
Cassette push-out auxiliary arm 22 and cassette push-out arm 17
are rotated together in the direction of arrow d against the tension spring 25.

Then, the cassette ejector pin 1 of the cassette ejector arm 17
9 pushes up the lower end 6a of the small cassette 6, and the small cassette 6 is pushed vertically upward in the direction of arrow a within the cassette holder 5.

Moreover, at this time, the cassette push-out arm 17 is rotated in the direction of arrow El]d to the cassette push-out position E, and the locked bin 2
0 moves the lock arm 28 against the tension spring 33
While rotating in the direction, the locked bin 20 moves from the locking recess 30 to the locking recess 31, and the lock arm 28 is moved back in the direction of the arrow Else by the tension spring 65, and the cassette pushing arm 17 moves as shown in FIG. 1A. The cassette is locked again at the ejection position E.

Then, as shown in FIG. 2G, when the cassette holder 5 has completed its movement to the cassette insertion position AK'l.

The upper end 6b of the small cassette 6 protrudes upward from the cassette insertion port 4 in the direction of arrow C by a large protrusion amount Y2.

Moreover, at this time, as shown in FIG. 2F, when the cassette push-out arm 17 rotates to the cassette push-out position E and pushes out the small cassette 6 above the cassette holder 5, the cassette push-out arm 17 is locked. Since it is locked by the arm 28, as shown in FIG. 2G, after the cassette holder 5 has completed the return movement to the cassette insertion position A, the small cassette 6 is moved downward into the cassette holder 5 by its own weight in the direction of the arrow EDc. This can prevent you from being unexpectedly drawn into the situation.

Therefore, after this, the small cassette 6 can be easily removed from the cassette insertion opening 4 in the upward direction of the arrow C (C) by easily pinching the upper end 6a of the small cassette 6 by hand.

As shown in FIG. 6A, when the large cassette 7 is vertically inserted from the cassette insertion opening 4 into the cassette holder 5 from the direction of arrow C, the lower end 7a of the large cassette 7 is connected to the cassette ejecting pin 19 and the cassette detection bin. 26 from above, the cassette push-out auxiliary arm 22 is rotated by a predetermined angle in the direction of arrow d relative to the cassette push-out arm 17 due to the step H shown in FIG. 1B.

As a result, a gap Xl is formed between one end 22a of the cassette push-out auxiliary arm 22 and the protrusion 64.

Therefore, after the large cassette 7 is inserted, the cassette holder 5 is pulled in the direction of the arrow a to the cassette retraction position B shown in FIG. 6B, and the cassette holder 5 is moved in the direction of the arrow a to the cassette insertion position shown in FIG. 3A. 4 When reciprocating to be moved, one end 2 of the cassette ejection auxiliary arm 22
2a is no longer in contact with the protrusion 64 at all, and the large cassette 7 is not pushed out at all by the cassette push-out arm 17 described above.

However, as shown in FIG. 6A, when the large cassette 7 is inserted into the cassette holder 5 and its lower end 7a is in contact with the cassette stopper 15, the upper end 7a of the large cassette 7 Since it protrudes upward by a very large protrusion amount Y3, the upper end 7af of the large cassette 7
Pinch it with your hands.

The operation of pulling out the large cassette 7 upward from the cassette insertion slot 4 can always be performed easily.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various effective changes can be made based on the technical idea of the present invention.

Furthermore, in the above embodiment, the cassette ejecting auxiliary arm 22 is used because the portable VTR is capable of selectively inserting the small cassette 6 and the large cassette 7 into the cassette holder 5. If it is a dedicated VTR, it is sufficient to use a single arm consisting of the cassette ejecting arm 17 and the cassette ejecting auxiliary arm 22.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

The cassette ejecting arm is rotated to the cassette ejecting position τ,
This cassette extrusion device is such that the cassette extrusion arm is locked by the locking means when the cassette is extruded to the outside of the cassette holder, so this cassette extrusion device can be applied to a porta-pull VTR, etc., and inserted vertically. Even when using a vertical loading method in which the cassette is pulled vertically from the cassette insertion position to the cassette retraction position by the cassette holder, the cassette pushed above the cassette holder by the cassette pusher arm will fall into the cassette holder due to its own weight. It is possible to prevent this from happening. Therefore, the cassette, which has been moved back to the cassette insertion position by the cassette holder, can be easily removed by hand from the outside.

It is.

１　・・・・・・・・・・・・ 5 ・・・・・・・・・・・・ 6 ・・・・・・・・・・・・ 11　・・・・・・・・・ 17・・・・・・・・・ 28・・・・・・・・・ A ・・・・・・・・・・・・ B・・・・・・・・・・・・ E・・・・・・・・・・・・ Management Man Portable VTR cassette holder small cassette Cassette extrusion device cassette extrusion arm lock arm C locking means) Cassette insertion position Cassette retraction position Cassette ejection position Tsuchiya Victory

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and the drawings show one embodiment of the invention.
Figures to 3B are partially cutaway front views taken along arrow A-A in Figure 5 showing the main parts, Figure 4 is a perspective view showing the main parts, and Figure 5
The figure is a side view of the entire portable VTR. In addition, the symbol Q used in the drawing indicates the small cassette ■ 椙 n4 middle figure 2C small force upper... / Toyu no masu completion figure 2D figure 2E figure 2G figure 2F figure force m ・ so I - Ki-Koute A4 and D rough? -4 Figure 4 Firepower set retraction and Figure 3B Hotapur 7-gun R Figure 5

Claims (1)

[Scope of Claims] A cassette holder that reciprocates an inserted cassette between a cassette insertion position and a cassette retraction position, and a cassette holder that is rotatably attached to the cassette holder and moves the cassette holder from the cassette retraction position to the cassette insertion position. and a cassette extrusion arm that is rotated to a cassette extrusion position and extrudes the cassette in the cassette holder to the outside of the cassette holder when the cassette extrusion arm is rotated to the cassette extrusion position when the cassette extrusion arm returns to the cassette extrusion position. A cassette extrusion device characterized in that the cassette holder is provided with a locking means that locks and is released by inserting the cassette into the cassette holder.