JPS6355763A - Cassette fitting device - Google Patents

Abstract

PURPOSE:To eliminate a holder stopper provided conventionally and to make the device light by providing a floating regulating part on a cassette pressing member and regulating the gap between the cassette located at charging position and the bottom face of a cassette holder. CONSTITUTION:A floating regulating part 12X is provided on a cassette pressing member 12 to regulate the maximum value X that the cassette bottom face floats over the holder bottom face. In case, now, the gap between the cassette bottom face and the holder bottom face be C at the loading completion position of a holder, the cassette upper face abuts the regulation part 12X at the time of descending a stroke amount B2=X-C, when the holder 8 is tried to be pushed down further. The regulation part 12X does the same work as the conventional holder stopper by setting a distance X so as to attain to the overstroke allowable amount B1=B2. The device can thus be made lighter by eliminating the stoppers at the four corners of the main body.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention moves a cassette holder that holds a cassette containing a tape-shaped recording medium from the cassette insertion position to the fully loaded position, forward movement, and backward movement. The present invention relates to a cassette loading device.

[Prior art] Traditionally, magnetic recording and reproducing devices (hereinafter referred to as VTRs)':g
In the case of the cassette holder used in the cassette, accurate positioning with respect to the substrate of the device is required when the tape is pulled out from the cassette and recorded and reproduced. Therefore,
During such recording and reproduction, that is, when using a cassette, a positioning member attached to the chassis of the apparatus is configured to accurately position the cassette with respect to the apparatus.

Figure 2 is a side view showing the configuration of the main parts of a conventional cassette holder, and Figures 3 (a) and (b) are the conventional and this developed cassette holders.
] is a diagram for explaining a tape cassette targeted for.

In FIGS. 3(a) and 3(b), l is the cassette 2, and 3 is a rotating lid for the tape drawer volume [1] rotatably attached to the front part of the cassette body 2 by a shaft 7. Normally, it is locked in the illustrated closed state by the illustrated lock claw. 5 is a lock release operation member attached to this lock claw, which is attached to the left side of the cassette body 2.
The zero-swivel lid 3 is placed in the insertion regulating groove 23, which is formed slightly beyond the front end of both sides of the cassette L along the insertion direction A of the cassette l. It has a tapered surface 3a that descends forward along the line. 4a and 4b indicate tape reels, and 6 indicates a gap between the cassette body 2 and the lid 3.

On the other hand, in FIG. 2, 8 is the cassette holder main body, 9a
, 9b are the force set holder body 8 and VT RH, respectively.
These levers are rotatably fixed to each of the frames 10 attached to the main body chassis, and when the cassette holder main body 8 is pushed down, the levers 9a and 9b rotate counterclockwise. 11 is a protrusion provided on the bottom surface of the cassette holder main body 8 integrally with the cassette/soto holder 8, and 12 is a cassette pressing member biased in the direction of the arrow 13.

The protrusion 11 is configured as a pillar that prevents unauthorized insertion because the tip of the cassette I comes into contact with the protrusion 11 when the cassette l is attempted to be inserted in the wrong state (incorrect insertion) at the cassette insertion position.

On the other hand, during this insertion, the L side of the cassette 1 is pressed against the bottom plate 8a of the cassette holder 8 by the pressing member 12. The pressing member 12 is moved by the arrow 13 by the hinge 5 around the shaft 14.
direction, and presses the top surface of the cassette l downward in the figure.

The cassette holder 8 and the cassette 1 shown by solid lines in FIG. 2 are in the cassette loading complete position. As shown in the figure, at the loading completion position, the cassette l-1 is locked by positioning pins 19a, 19b set in the main body of the device, and is pressed against the bins 19a, 19b by the cassette pressing member 12 mentioned above. The position is determined by this.

On the other hand, it is locked to the cassette holder 8 by a locking mechanism (not shown) and is in the position shown in the drawing. At this time, there is a gap C between the bottom plate 8a of the cassette holder 8 and the bottom surface of the cassette l, which is set in consideration of the error in the lock position of the cassette holder. Furthermore, in order to lock this locking mechanism, the cassette holder 8 needs to take an overstroke downward from the locking position.

At this time, if the cassette holder 8 takes a larger stroke than necessary, the cassette holder may come into contact with various mechanisms of the VTR and be damaged. Therefore, stoppers 17a and 17b are installed on the main body of the device to regulate the amount of overstroke. At this time, the allowable overstroke amount B is set based on the stroke required to lock the mouth/link mechanism described above and the error in the locking position of the holder.

[Problems to be Solved by the Invention] As mentioned in L, with the cassette mounting device used in conventional VTRs, etc., if the overstroke from the cassette holder lock position is large, it will interfere with parts of the VTR main body. Therefore, the cassette holder stopper that restricts the cassette holder from falling down at a certain distance from the lock position is placed upright from the VTR body so that it contacts at least the bottom of the 4 corners of the cassette holder body, but there are 4 spaces on the chassis of the cassette holder body. This poses a problem in that the degree of freedom in design and movement of parts is taken away, and that many of the stopper members are metal rods, which impede weight reduction.

The cassette loading device of the present invention is different from the above points.

To provide a cassette mounting device capable of removing a cassette holder stopper from a chassis of a main body, reducing the number of parts, and reducing the weight of the entire VTR.

[Means for Solving the Problems] In order to achieve the above purpose, the cassette mounting device of this generation ξμ is provided with a device body for positioning the cassette at the cassette loading completion position. a cassette pressing member biased to press the top surface of the cassette against the bottom surface of the cassette holder; The configuration is such that the distance from the bottom of the holder is regulated.

[Operation] By configuring as described above, the cassette at the cassette loading position n is positioned with respect to the main body of the apparatus, and the distance between the bottom surface of the cassette and the bottom surface of the cassette holder is regulated i1. Therefore, the position of the cassette holder is restricted relative to the main body of the apparatus. Furthermore, since no special parts are used to regulate the position, the device can be designed more freely and can be made lighter.

[Embodiment] FIG. 1 is a side view of an embodiment of the cassette loading device of the present invention, and the same reference numerals as in FIGS. 2 and 3 indicate the same or corresponding parts.

In FIG. 1, a cassette floating regulating portion 12X is provided at the rotation axis tη of the cassette pressing member 12. The maximum amount by which the bottom surface of the cassette 1 floats above the bottom surface of the cassette holder 8 due to this regulating portion is a distance indicated by X in the figure.

Now, when the cassette 1 is in the loaded position, if the distance between the bottom of the cassette 1 and the bottom of the locked cassette holder 8 is C, as in the conventional example shown in FIG. Last stroke Jag (=
X-C) When the cassette l is lowered, the upper surface of the cassette l is at the regulating part 12.
X, and the cassette holder 8 can no longer be shifted downward.

Therefore, if the distance gIX is set so that B=82, the cassette floating regulating portion 12X of the cassette pressing member 8 functions similarly to the stoppers 17a and 17b in FIG. Therefore, there is no need to provide the stoppers 17a, 17b, and the degree of freedom in designing the device increases, making it possible to reduce the size and weight of the device.

Note that the part that contacts the cassette is the regulating part 1 of the pressing member 12.
If it seems unstable based on 2X, it would be more stable if a separate restriction part is provided inside the holder main body and the holder is held in two places.

[Effects of the Invention] As used above, in this invention, the distance between the cassette and the bottom of the cassette holder is regulated by the cassette pressing member that is energized to press the cassette against the bottom of the cassette holder. without providing a stopper,
Unnecessary movement of the cassette holder is prohibited, the weight of the apparatus can be reduced, and the degree of freedom in design on the apparatus main body, that is, the degree of freedom in operating parts, can be increased.

[Brief explanation of drawings]

FIG. 1 is a side view showing the configuration of a cassette loading device as an embodiment of the present invention, FIG. 2 is a side view showing the configuration of a conventional cassette loading device, and FIGS. 3(a) and (b). FIG. 1 is a diagram showing a tape cassette which is a target of a cassette holder according to an embodiment of the present invention. In the figure. 1: Cassette 2: Cassette body 8: Cassette holder body 8a: Cassette holder bottom 9a, 9b: Rotating lever lO: Frame 12a Two cassette pressing members 12x: Regulation part i7a, +7b:
Cassette holder stopper 19a, 19b: Cassette positioning bin Agent Patent attorney 1) Haru Kitatake jl13 Figure

Claims (1)

[Claims] In a cassette loading device that moves a cassette holder that holds a cassette that stores a tape-shaped recording medium forward and backward from a cassette insertion position to a loaded position, a device is attached to the device body to position the cassette at the cassette loading completed position. a positioning member provided therein, and a cassette pressing member biased to press the top surface of the cassette against the bottom surface of the cassette holder, the cassette and the cassette holder being placed in the cassette loading completion position by the cassette pressing member. A cassette mounting device characterized by regulating the distance from the bottom surface of the cassette mounting device.