JPS59178644A - Cassette cover opening and closing device of magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To make a device compact and light-weight and improve the value in design by providing a pressing member, which can set preliminarily the cover of a cassette to the half open state, in the rear and part of a cassette receiving base so that this member is freely projected elastically. CONSTITUTION:When a cassette 1 is inserted to the cassette receiving base, the lower end of a cover 4 is slided on a slope part 15a of a projecting wall 15 of a pressing member 13 to depress the pressing member 13. Lock of the cover 4 is released, and the pressing member 13 is restored by elasticity at this moment, and the cover 4 is pressed up by the projecting wall 15, and the cover 4 is set to the half open state. When the cassette 1 reaches a limit position of backward movement, an engaging member 10 enters to the lower side of the cover 4, and the cover 4 is pressed up relatively by falling of the cassette 1 and is opened to its full width. Consequently, the cover 4 is not brought into contact with a pin 11 in said limit position of the cassette 1 to make the vertical position of the cassette 1 lower, and therefore, the device is made compact and light-weight.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention 11: Video cheap play]-1. - This relates to a lid opening/closing device that applies a force of one force to the other.

This scale has a built-in hoop in the case.
This lid is locked closed to protect the tape when the cutter is not in use, and is unlocked and opened once the magnetic recording medium is inserted into the device. , When ejecting, the self-FJ is 1'!!'l again
'R1. The so-called cassette front loading and unloading system, that is, the cassette installed on the front of the main unit that supports magnetic recording and playback.
Insert the cassette from the loading/unloading port, store this cassette in the cassette holder, move it horizontally backward, and then move it downwards.
1sa[! Operation Position-2- In a magnetic recording and reproducing device that uses the method of applying the cassette to the stomach, the conventional structure of the lid opening/closing device for opening and closing the lid of the cassette is illustrated in Fig. 1. .

1 is a cassette, 2 is a cassette case, 31 Matheve, 4
is an indigo plate attached to the rear end of the case so that it can be opened and closed freely. The lid locking mechanism described above is located on the bottom side of the case (f
/ has a lock release button 5 that can be elastically retracted from the position;
When this button 5 is pressed from the outside, the closing lock of the rose 4 is released. 6 is a cassette holder; 7 is a support frame that supports the cassette holder 6 so as to be movable along the path; and 8 is a chassis to which the support frame 7 is attached. Note that illustrations of a movement guide mechanism and a drive mechanism for moving the cassette pedestal 6 are omitted. The cassette pedestal 6 consists of a bottom wall 6a and left and right side walls 6b, and one side wall 6b has a cover lock release (a pusher 9 as a structure).
is provided inside the side wall so as to be elastically retractable.

Also, the rear frame 7a of the support frame 7 (or the rear frame 7
The lid 4 of the cassette 1 is placed on the top surface of the chassis 8 (corresponding to a).
An engaging member 10 is provided on the lower surface -3- of the engaging groove 1j'+l I\\jl.

However, as shown in Figure 1 (a) (9-1), the force is 1
When the cassette 10 is inserted into the cullet holder 6, press the cassette 10 lock YH remove button! Press the inner side with the pusher 9 of the pedestal 6! The closing lock 4 is tightened, and in this state the pedestal 6 is pushed backwards (
Transfer water 41 to the right side of the figure). And Kase!・When the pedestal 6 reaches the rear limit position as shown in FIG.
In this state, the force 1-1 moves downward with the pedestal (1), and the lid 4 is opened all at once as shown in Fig. 1 (1). At the same time, chassis 8
Second set [Jare! This tape [1-De'ing pin 11
(1) inside the cullet tape 3, and then the tape 3 is pulled out from the case 2 by the bottle 11 and poured into a predetermined ml. lf. The tape loading bin (hereinafter referred to as the bin) 11 is set up in multiple stages, including fixed bins and movable bins, but the highest one is shown here. ing.

When using a conventional device with such a configuration, in the 4'7 position relationship of the current 1, chassis 8, and bottle 11, the distance shown in FIG. The height a is equal to the height b of the bottle 11 plus the allowance C. However, if we consider only the tape loading effect, what we actually need to cover is
As shown in FIG. 3, the lower end level of the tape 3 is defined as yl, and the dimension is the bin height b plus the margin d from the bint end to the lower end of the tape. Given this dimensional relationship, the height a' of the cassette 1 from the top surface of the chassis 8 is
Since the height a in the case shown in the figure is not only lower than the bottle height b, the thickness of the magnetic recording/reproducing device can be reduced, and the device can be made even more compact and lightweight, and the design can increase its value. Furthermore, since the vertical movement stroke of the cassette 1 can be small, it is mechanically advantageous.

However, with conventional equipment, curry 5
= In order to start opening the lid 4 at the last position of the horizontal movement of the bottle 1, the interference between the lid 1 and the bottle 11 is prevented. The lower level of ′!
There was no choice but to set it at the height "a" in Figure 2, which is based on the 4th standard. .

Therefore, the present invention sets the cassette height position to -1-pu lower end level to 1;
/ Providing a cassette lid opening/closing device that can be set to

The characteristics and dimensions of the present invention are as follows: At the rear end of the cassette cradle, a cassette container is placed in advance at a predetermined position, and a pusher member is elastically installed at a point where it can be freely retracted. Exists.

Embodiments of the present invention will be described below with reference to FIGS. 4 to 6. In the following embodiments, redundant explanation of the configuration of parts common to the conventional device shown in FIG. 1 will be omitted.

A stopper 12 is formed upright on both left and right sides of the rear end of the cullet pedestal 6, and this stopper 12 allows the cassette pedestal 6 to
The position of the cassette 1 after storage -6- 4F (shown in FIG. 6(A)) is determined 1. This point is also the same for the conventional device, and as described above, the pusher 9 is pressed against the lock release button. The force applied to pushing 5 inward is the unlocking action of 1 in 1-1, which is carried out when or before the cassette reaches the above 1η limit. Place the cassette holder 61 on the bottom wall 6a.
A push member 13 made of plastic is attached to the rear right end (the left end is also acceptable) of the push member 13.
1 is formed by integrally protruding a projecting wall 15 having a flat top surface 151) and a slanted surface 15a having a stop on the upper surface of one end of the plate-shaped mounting portion 1/I. The portion 14 is screwed onto the lower surface of the bottom wall 6a of the cassette holder. In this way, this pushing member 13 is provided on the cassette holder 6 in such a manner that the protruding wall 15 projects backward and upward from the cassette holder bottom wall 6a and can be elastically moved up and down by the bullet f of the plus deck. The dimensions of the protruding wall 15 rearward and upward from the cassette pedestal 6 will be explained together with the following operation description.

In this configuration, when the cassette 1 is placed in the cassette receiver 7 6, the closing lock of the lid 4 is released as shown in 11). However, until this lock is released (E51), as shown in FIG.
Fl 1. T, firmly press down the pushing member 13, M
4 is released, as shown in Figure 6 (b),
- Later, the pushing member 13 returns to the bullet f1 and returns to the projecting wall 1!
Push up the lid 4 at step 5. In this way, the lid 4 is brought into a half-open state. The opening degree of the lid 4 at this time is set so that the lower part of the cheek 73 is slightly exposed fH-1j to protect the tape. Moving on to No. 1, how is Lid 1 open like this?
: First, set the height dimension of the push member projecting wall 15 (the amount of protrusion of the bottom wall 6 a h' of the push member 15).

Also, the same collision fIi'! The rearward protruding device (2) from the bottom wall 6a of the cassette holder 150 is set so that the above effect is achieved in relation to the unlocked position of the lid 1.

The above-mentioned operation of the lid 4 opened in this way is basically the same as the conventional device, and as shown in Figure 6 (c), the cassettes 1 to 1 are At the rear corner of the movement (position 8), the engaging member 10 enters the lower side of the lid 4, and as the cassette 1 descends, the lid 4 is relatively pushed up and fully opened.

In this way, when using this lid opening/closing device configured to leave the cover 4 in a half-open state when the cassette 1 is placed in the cassette holder 6 (when the lid is opened at the last horizontal movement position of the J cassette 1) 4 and the bin 11, the height position of the cassette 1 can be set based on the relationship between the bottom edge of the tape 3 and the bin 11, instead of the relationship between the bottom edge of the tape 3 and the bin 1''l as in the past. −, then it is sufficient. In other words,
As shown in Fig. 3, the height position of the cassette 1 is set at a position a' from the upper surface force H of the chassis 8, which is lower than the height b of the bin 11. This makes it possible to set it at a lower position.

In addition, at the time of ejection, the lid 4 returns to the semi-opening state as the cassette 1 moves upward, and after the cassette 1 slides forward and returns to its original position, the force is applied from the cassette pedestal 6 to the lid 4. When pulled out, the swallow 4 (not shown) provided at the pivot joint portion of the lid is closed and closed.

By the way, I-Note 1 + IIi i Grid (, 1, Press 1) The part 13 is formed with plus deck, and I,= is attached to the springs A such as the plate spring straddle wire board. may be formed t). Or (jl, the pushing member itself is formed inelastically, and the force 1 to 1 is applied via a spring.
The push member 130 is elastically movable on the claw side (J and 1-). Also, the pushing member 130 is attached to the pedestal 6 (j-ru take 1) with a lever other than the screw 11-.゛So1-Ichime and other species]
Z can be changed, and a part of the bottom of the cullet pedestal 6 can be extended 4! It is also possible to form the pushing part A13 integrally. On the other hand, Caret 1's answer is 7 defeats and the lid 4 is opened 1jl to make it listen from I' opening! The structure is similar to U) mentioned in the above embodiment, and various configurations of r1 can be adopted.

As described above, according to the present invention, it is possible to lower the height of the 311 calef. In addition to improving the design value, the vertical movement stroke of the cassette is also small, making it mechanically advantageous. This has excellent practical effects.

[Brief explanation of drawings]

Figures 1 (a) and (b) are schematic side sectional views for explaining the structure and operation of the conventional device, and Figures 2 and 3 show two ways of applying force to the height positions. 4 is a partial perspective view of the cassette lid opening/closing device according to the embodiment of the present invention; FIG. 5 is an enlarged perspective view of the IJ pusher 1 member;
FIGS. 6(a), 6(b) and 6(c) are schematic side sectional views for explaining the operation of the device. 1... cassette, 2... cassette case, 3...
tape, 4...lid, 5...lock release button of lock mechanism, 6...cassette holder, 7...support frame l
\, 9...Press element as a lock release mechanism, 10...
- Engagement member as a lid opening mechanism, 13... push member. Patent applicant Imazaike Seiko Co., Ltd. Figure 2 Figure 3

Claims (1)

[Claims] 1. A cassette inserted from the cassette loading/unloading port provided on the front side of the magnetic recording/reproducing paste making body is accommodated in a cassette holder, and the cassette holder is moved from the loading/unloading position along the support frame. In a magnetic recording/reproducing device that is configured to move backward horizontally and then move downwards to reach the operating position, there is a tape drawer in the cassette case (a tape drawer that can be opened and closed at the side end). A cassette opening/closing device for opening and closing the lid, which includes a lid locking mechanism for locking the lid in the closed state on the cassette case, and a lid lock release mechanism for unlocking the lid by the lid locking mechanism. At the same time, a push member is installed in the 1F part of the cassette holder to allow the unlocked lid to be pushed up from the bottom half way down. , and, on the support tool 1-rail \, there is provided a lever for fully opening the half-open lid while the cassette pedestal is moving downward from the horizontal movement position. A magnetic recording nail ζ playback device (Zuro cassette lid opening/closing device).