JPH0329807Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an eject device for a tape recorder that records and reproduces data on a magnetic tape.

[Technical background of the invention and its problems]

A tape cassette installed in a video tape recorder (VTR) is inserted through a cassette insertion slot of the VTR, lowered by an ejector, and installed in a recording/reproducing section.

This tape cassette ejector is
A cassette holder for holding a tape cassette is provided above a base fixed to the chassis of the VTR so that it can be raised and lowered. a first link arm that is movably engaged in a long hole provided in the base; the center portion is pivoted to the center portion of the first link arm, and the lower end is movable to the long hole provided in the side surface of the base; The second link arm is engaged with the cassette holder, and the upper end is pivotally connected to the side surface of the cassette holder.

This eject device holds a tape cassette inserted through a cassette insertion slot in a cassette holder, and lowers the tape cassette together with the cassette holder to attach it to the recording/playback section. The lowered tape cassette is fixed with its upper surface pressed against the bottom surface of the cassette holder by a cassette holder.

However, in the conventional eject device, the cassette retainer is operated by a cassette retainer mechanism that is separate from the elevating mechanism of the cassette holder, so not only is the structure complicated, but the cassette retainer mechanism is Since the ejector is provided separately from the lifting and lowering mechanism of the cassette holder, there is a problem in that the entire ejector becomes large in size.

[Purpose of invention]

This invention was developed in view of the above-mentioned circumstances, and its purpose is to enable the tape cassette holding operation to be performed in conjunction with the lowering of the cassette holder, without the need for a special cassette holding mechanism. An object of the present invention is to provide an eject device for a tape recorder, which has a simple structure and can be miniaturized.

[Summary of the idea]

That is, this invention is an ejection device that includes a cassette holder that holds a tape cassette above a base, and a support mechanism that supports the cassette holder on the base so that it can rise and fall. A leaf spring having an upwardly inclined tip is provided opposite the upper surface of the tape cassette held by the cassette holder, and a leaf spring is provided above the leaf spring by the lowering movement of the support mechanism as the cassette holder lowers. A leaf spring pressing member is provided which moves from the base end of the leaf spring to the distal end side and presses the leaf spring against the upper surface of the tape cassette.

[Example of idea]

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

In Figures 1 to 3, reference numeral 1 in the figure is a base that is fixed to the chassis of the VTR, and this base 1 is
It consists of a bottom plate part 1a fixed to the chassis of the VTR, and a pair of left and right side plates 1b, 1b formed by bending both side edges of the bottom plate part 1a upward. Reference numeral 2 denotes a cassette holder provided above the base 1, and the cassette holder 2 includes a bottom plate portion 2a that supports the lower surface of the tape cassette A, and both side edges of the bottom plate portion 2a are bent upward. It consists of a pair of left and right side plates 2b, 2b formed by

3, 3 are a pair of left and right X-shaped link mechanisms provided on both sides of the base 1 and the cassette holder 2;
The cassette holder 2 is supported by the base 1 via the pair of X-shaped link mechanisms 3, 3 so as to be movable up and down.

The X-shaped link mechanisms 3, 3 have two link arms 3a, 3b of the same length that are pivotally connected to each other at the center, and one link arm (hereinafter referred to as the first link arm) 3a is The lower end is pivotally attached to the front end side of the base side plate 1b, and the upper end is movably engaged in a long hole 4 provided in the side plate 2b of the cassette holder 2. This elongated hole 4 is formed horizontally from approximately the center of the cassette holder side plate 2b toward the rear end of the cassette holder (the insertion opening side for the tape cassette A).

The other link arm (hereinafter referred to as the second link arm) 3b has its upper end pivoted to the front end side of the cassette holder side plate 2b, and its lower end to the base side plate 1.
It is movably engaged with a long hole 5 provided in b.
This long hole 5 also corresponds to the long hole 4 on the cassette holder 2 side.
In correspondence with this, it is formed horizontally from approximately the center of the base side plate 1b toward the rear end of the base.

In addition, the pair of left and right X-shaped link mechanisms 3, 3
An upper torsion bar 6 which also serves as a pressing member of a leaf spring, which will be described later, is the upper end of the first link arms 3a, 3a that move along the elongated hole 4 of the cassette holder 2.
The second
By connecting the lower ends of the link arms 3b and 3b with the lower torsion bar 7, they rotate in sync with each other as the cassette holder 2 moves up and down, and the cassette holder 2 is always supported in a horizontal state without being tilted. There is.

Reference numeral 8 denotes a beam plate provided between the side plates 2b, 2b of the cassette holder 2. It is provided almost flush with the upper edge of.

Reference numerals 9 and 9 denote a pair of leaf springs whose base ends are fixed to both ends of the beam plate 8 and are provided so as to face the upper surface of the tape cassette A held in the cassette holder 2. , 9 are provided along the long holes 4, 4 of the cassette holder side plates 2b, 2b, with their leading ends facing toward the rear end of the cassette holder 2. In addition, the leaf springs 9, 9 have their proximal ends bent diagonally downward, and from this bent part, their distal ends are inclined upward toward the distal ends, and the distal ends are further inclined upward. The leaf springs 9, 9 have upward elasticity.

Further, the first of the left and right X-shaped link mechanisms 3, 3
The upper torsion bar 6 that connects the upper ends of the link arms 3a, 3a is located on the leaf springs 9, 9, and when the cassette holder 2 is in the raised state, the upper torsion bar 6 is 2
As shown in the figure, it is located on the base end side of the leaf springs 9, 9. In this state, the base ends of the leaf springs 9, 9 are received by the upper torsion bar 6 from above, and the distal ends thereof are raised; at this time, the base ends of the leaf springs 9, 9 are The lowest point is located above the top surface of tape cassette A at a small distance.

On the other hand, the tape cassette A is inserted onto the bottom plate 2a of the cassette holder 2 from the rear end side of the cassette holder 2 as shown by the arrow in FIG. 1 with the cassette holder 2 raised. When cassette A is inserted into cassette holder 2, guard panel a (an opening/closing lid that protects the tape exposed on the front of the cassette) on the front of the tape cassette will open.
The lock is released by a lock release piece (not shown) provided on the cassette holder 2.

Further, the cassette holder 2 is adapted to be lowered by an elevating mechanism (not shown) while holding the tape cassette A inserted as described above, and as the cassette holder 2 is lowered, Due to the rotation of the X-shaped link mechanisms 3, 3 as the cassette holder 2 is lowered, the upper torsion bar 6 moves together with the upper ends of the first link arms 3a, 3a from the base end side to the distal end side of the leaf springs 9, 9. Then, push down the leaf springs 9, 9, and finally press down the inclined part of the tip of the leaf spring, and as shown in FIG. The tape cassette A is pressed and fixed by the plate springs 9, 9 by pressing it against the upper surface.

Therefore, the tape cassette A that is lowered by the lowering of the cassette holder 2 and is loaded into the recording/reproducing section.
is automatically fixed as the cassette holder 2 is lowered.

2 and 3, reference numeral 10 is a guard panel lifting member for opening the guard panel a of the tape cassette A. When the tape cassette A is lowered, the guard panel a is lifted up. It is pulled up and released as shown in FIG.

In this ejecting device, the cassette holder 2 is provided with leaf springs 9, 9 whose tips are inclined upward so as to face the upper surface of the tape cassette A held in the cassette holder 2. 9, as the X-shaped link mechanisms 3, 3 rotate as the cassette holder 2 descends, the first link arms 3a, 3a move from the proximal end to the distal end of the leaf springs 9, 9 together with the upper ends of the first link arms 3a, 3a. By providing an upper torsion bar 6 that presses the leaf springs 9 against the upper surface of the tape cassette A, the tape cassette A is pressed and fixed by the leaf springs 9 in conjunction with the lowering of the cassette holder 2. Therefore, there is no need to provide a tape cassette holding mechanism separate from the cassette holder elevating mechanism as in the prior art, and therefore the structure of the ejector can be simplified and the entire ejector can be downsized.

Furthermore, in this embodiment, the upper torsion bar 6 that presses the leaf springs 9 against the upper surface of the tape cassette is moved toward the rear end of the cassette holder 2 (to the rear of the tape cassette A) as the cassette holder 2 descends. This has the advantage that the length of the cassette holder 2 can be reduced.

That is, if the upper torsion bar 6 is moved to the front end side of the cassette holder 2 (to the front side of the tape cassette A) as the cassette holder 2 descends, contrary to the above embodiment, the guard panel on the front side of the tape cassette The upper torsion bar 6 gets in the way when raising and opening a. Therefore, in this case, the tape cassette A must be deeply inserted into the cassette holder 2 until its guard panel a protrudes forward beyond the limit of movement of the upper torsion bar 6. In order to ensure that the cassette holder 2 holds the cassette up to its front end, the cassette holder 2 must be extended toward its front end, which results in a long cassette holder 2. On the other hand, if the upper torsion bar 6 is moved to the rear end side of the cassette holder 2 as the cassette holder 2 descends as in the above embodiment, the upper torsion bar 6 can be used to lift and open the guard panel a. Since the tape cassette A does not get in the way, there is no need to insert the tape cassette A deeply into the cassette holder 2, and the length of the cassette holder 2 can therefore be made small.

Further, in the above embodiment, the leaf springs 9, 9 for pressing and fixing the upper surface of the tape cassette A are inclined upward toward the rear end of the cassette holder 2, that is, toward the insertion opening of the tape cassette A. Although the upper surface of cassette A is pressed and fixed by leaf springs 9, cassette holder 2
The tape cassette A can also be easily inserted.

In the above embodiment, the upper torsion bar 6 presses the leaf springs 9, 9 against the upper surface of the tape cassette A. This may be done by a leaf spring pressing member, in which case this leaf spring pressing member is attached to the upper end of the first link arm 3a of the X-shaped link mechanism 3.
It may be provided so that it moves together with the base.

Further, in the above embodiment, the leaf spring pressing member (upper torsion bar 6 in the above embodiment) that presses the leaf springs 9 against the upper surface of the tape cassette is moved toward the rear end side of the cassette holder 2 as the cassette holder 2 descends. However, if the length of the cassette holder 2 can be increased to a certain extent, the leaf spring pressing member may be moved toward the front end of the cassette holder 2 as the cassette holder 2 is lowered. In that case, the leaf spring 9,
9 may be provided so as to be inclined upward toward the front end side of the cassette holder 2.

[Effect of idea]

According to this invention, the cassette holder is provided with a leaf spring whose tip side is inclined upward so as to face the upper surface of the tape cassette held in the cassette holder, and a leaf spring is placed on the leaf spring to prevent the tape cassette from falling as the cassette holder descends. Since a leaf spring pressing member is provided that moves from the base end of the leaf spring to the distal end and presses the leaf spring against the upper surface of the tape cassette due to the lowering movement of the support mechanism, the action of pressing the tape cassette is prevented by the lowering of the cassette holder. This can be done without a special cassette holding mechanism in conjunction with the cassette ejection mechanism, and therefore the structure of the ejecting device can be simplified and downsized.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Figures 1 and 2 are a perspective view and a vertical side view of the ejector with the cassette holder raised, and Figure 3 shows the ejection device with the cassette holder lowered. It is a longitudinal side view of the ejection device in a state. 1...Base, 2...Cassette holder, 3...X
Type link mechanism, 3a...first link arm, 3b
...Second link arm, 4, 5...Long hole, 6...
Upper torsion bar, which also serves as a leaf spring pressing member, 9...
...Plate spring, A...Tape cassette.

Claims (1)

[Scope of utility model registration request] The cassette holder is equipped with a base, a cassette holder that holds a tape cassette above the base, and a support mechanism that supports the cassette holder on the base so that it can be raised and lowered. An ejection device for mounting a cassette, wherein the cassette holder is provided with a leaf spring whose tip side is inclined upward so as to face the upper surface of the tape cassette held by the cassette holder, and above the leaf spring, A leaf spring pressing member is provided which moves from the proximal end side to the distal end side of the leaf spring and presses the leaf spring against the upper surface of the tape cassette due to the lowering movement of the support mechanism as the cassette holder lowers. Tape recorder ejection device.