JPH01143059A - Lid opener device - Google Patents

Abstract

PURPOSE:To prevent a cassette from being pushed up with force to close a lid and to hold the cassette in a prescribed position without fail by abutting the both edges of a turning member, which is supported with being freely turnable, to a holder to hold the lid and cassette. CONSTITUTION:When a cassette 1 is inserted up to the position to be abutted to a holder 5, a lid 2 is held in a position close to a sliding surface 10 of a turning member 13. Next, when the holder 5 is caused to fall to a chassis 4, the lid 2 and the sliding surface 10 are abutted. When the holder is caused to fall further, the lid 2 is slided along the shape of the sliding surface and opened. Continuously, at a time point a positioning guide 6 goes into the recessing part of the cassette 1, the holder 5 pushed a projecting part 11 and the turning member 13 is turned in a clock-wise direction with a pin 4 as a shaft. Then, the sliding surface 10 presses the lid 2 and opens it. Thus, a height guide 7 is abutted to the lower surface of the cassette 1 and the positioning guide 6 is engaged with a recessing part 3. Then, the cassette can be held in the prescribed position.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a method for reliably holding a cassette with its lid on the right side, used in a recording/reproducing device such as a VTR, in a predetermined position when the device is inserted into the device. This article relates to Sururirad oven device.

(Conventional Example) Conventionally, magnetic tape recording and reproducing devices such as video tape recorders (VTRs) and digital audio recorders (
Magnetic tapes used in recording and reproducing devices such as DAT) are held in the hand to prevent fingerprints, dirt, etc. from adhering to the tape surface due to careless touching of the magnetic tape surface. It is stored in a cassette. This cassette is rotatably supported on the side and is provided with a front cover (hereinafter referred to as a lid) that can be opened and closed at a substantially right angle on the upper surface of the cassette. On the other hand, this lid is held in a closed state by a spring attached to the lid, and has a structure in which the tape is hidden by the lid.

When the cassette is inserted into the recording/playback device, the rad ovener device installed in the recording/playback device rotates the cassette lid upward, holds the lid open, and pulls out the tape from the cassette. That's what I do.

FIGS. 4(a) and 4(b) are side views showing an example of a conventional glue rad oven device, in which the cassette 21 is formed into a rectangular shape, and an opening (not shown) is formed on one side (front) in the longitudinal direction. A recess 22 is carved on the front surface of each of the facing sides, and a recess 2 for positioning is formed on the lower surface.
3 is engraved on the front side. Further, on the front surface of the cassette 21, a lid 25 is formed by bending both ends of a plate-like member at right angles so as to face each other, and on this facing surface, a lid 25 is provided with a protrusion 24 erected at opposing positions. It is pivotally supported by a convex portion 24 fitted into the concave portion 22 and is rotatably disposed on the upper surface side of the cassette 21 . Further, a spring member (not shown) is attached to the lid 25 on the inner surface of the cassette 21 for rotating the lid 25 downward so as to cover the front surface.

On the other hand, on the chassis 26, a holder 27 that holds the cassette 21 inserted from the lid 25 side is supported by a support portion (not shown) so as to be movable in the vertical direction on the chassis 26. Also, on the chassis 26 there is a lid 2.
A contact member 29 having a sliding surface 28 that contacts the cassette 5 is provided upright, and a height guide 30 that contacts the lower surface of the cassette 21 and supports it at a constant height is fitted into the recess 23 for positioning. Positioning guides 31 for positioning the cassettes 21 uniformly on the chassis 26 are respectively provided upright.

In the rad oven device configured in this way, when the cassette 21 is inserted into the holder 27 arranged on the chassis 21 from the front side, that is, from the lid 25, one end of the lid 25 touches the sliding surface 28 of the abutment member 29. A portion of the cassette 21 comes into contact with the holder 27 at a position where they are close to each other, and the cassette 21 is held by the holder 27. and,
When the holder 27 is lowered in the direction of the arrow by a support portion (not shown), the lid 25 comes into contact with the sliding surface 28, and when the holder 27 is further lowered, the lid 25 contacts the sliding surface 28.
The lid 25 is opened by sliding on the lid 8 and rotating in the direction B around the pivot portion (convex portion 24 and concave portion 22). When the lower surface of the cassette 21 comes into contact with the height guide 30 and the positioning guide 31, and the positioning guide 31 fits into the recess 23 on the lower surface of the cassette and is placed at a predetermined position, the cassette is completely opened. Furthermore, a certain pressure is applied to the holder 27 to hold the cassette 21 fixed on the chassis 26, and the magnetic tape is pulled out from within the cassette 21, allowing recording and reproduction.

However, when the lid 25 is opened, a force trying to close it by a spring member (not shown) is applied to rotate the lid 25 in the C direction when it is in contact with the sliding surface 28, which raises the height of the cassette 21. It attempts to lift in the direction B using the guide 30 as a fulcrum.

For this reason, the positioning guide 31
There is a problem in that the cassette cannot be fully fitted with the cassette 3 and cannot be held in place. Furthermore, if the tape inside the cassette is run in this state, it is conceivable that the tape will be damaged.

(Problems to be Solved by the Invention) As mentioned above, in the conventional glue rad opener device, the force to close the lid is applied to the contact member and the lid is pushed up using the height guide as a fulcrum. The recess and the positioning guide cannot be completely fitted,
There was a problem in that the cassette could not be held in a predetermined position.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a lid opener device that can eliminate the above-mentioned problems and that can reliably hold a cassette in a predetermined position using a simple mechanism.

[Structure of the Invention] (Means for Solving the Problems) The adhesive oven device of the present invention is provided with a rotary member whose both ends are rotatably supported, one end of which holds a cassette having a lid, and which is movable. A protruding part is erected to come into contact with a part of the holder that is supported, and the other end is in sliding contact with the lid of the cassette, forming a sliding surface of a specific shape that allows the lid to slide to open and close when the holder is moved. However, the force of the lid in sliding contact with the sliding surface is applied to the holder by rotating the rotating member and at the protrusion that comes into contact with the holder.

(Function) According to the present invention, the force that tends to close the lid is applied to the holder by rotating the rotating member, so it is not directly applied to the cassette held in the holder, and the cassette is not pushed up by the lid. , the cassette can be securely held in place.

(Example) The present invention will be described below based on the example shown in the drawings.

1 and 2 relate to the glue rad oven apparatus of the present invention, FIG. 1 is a plan view showing one embodiment of the glue rad oven apparatus of the invention, and FIG. 2 is a side view showing the side view of FIG. 1.

In these figures, a cassette 1 formed in a rectangular shape
A lid 2 is provided on the front surface of the cassette 1 and is rotatably supported by a pivot portion (not shown), and a recess 3 for positioning is carved in the front side of the lower surface of the cassette 1. On the other hand, a holder 5 is disposed on the chassis 4 and holds the cassette 1 by coming into contact with a part of the cassette 1 inserted from the lid 2 (front side).The holder 5 is supported so as to be movable up and down on the chassis 4. It is supported by a support part (not shown). Further, a positioning guide 6 that fits into the recess 3 of the cassette 1 and a height guide 7 that abuts the lower surface of the cassette 1 and holds the cassette 1 at a constant height are provided on the chassis 4. On the other hand, Si1? - A support member 9 with a hole 8 projecting thereon is provided upright on the side 4. A sliding surface 10 having a specific shape for slidingly contacting the lid 2 is formed at one end, and a protrusion 11 that comes into contact with the holder 5 is formed at the other end, and a hole 12 is formed in the center. The formed rotating member 13 is rotatably supported by a hole 12 formed in the rotating member 13 and a pin 14 fitted into the hole 8 of the support member 9.

The rad oven device configured in this way is shown in Fig. 2(a).
As shown in , when the cassette 1 is inserted into the holder 5 until a part of the cassette 1 contacts the holder 5 through the front lid 2, the cassette is inserted into the holder 5 at a position where the lid 2 is close to the sliding surface 10 of the rotating member 13. 1 is stored in a state where it is held in a holder 5. Then, when the boulder 5 is lowered onto the chassis 4 using a support portion (not shown), the lid 2 and the sliding surface 1o come into contact with each other, and when the boulder 5 is lowered further, the lid 2 slides along the shape of the sliding surface 1o, and the lid 2 begins to open. When the lid 2 is wide open and the positioning guide 6 enters the recess of the cassette 1, the holder 5 housing the cassette 1 begins to push the protrusion 11, and the rotating member 13 rotates around the bin 14. Rotating clockwise, the sliding surface 10 presses the lid 2 to further space the lid 2 apart. And Fig. 2(b)
At the position shown in , the height guide 7 comes into contact with the lower surface of the cassette 1, and the positioning guide fits into the recess 3, so that the cassette is placed at a predetermined position. Further, a certain pressure is applied to the holder 5 to hold the cassette 1 at a predetermined position, and the cassette insertion operation is completed.

At this time, the function of the force that tries to close the lid 2 will be explained using FIG. 3.

Here, f is the force that tries to close the lid 2, f' is the force that the protrusion 11 of the rotating member 13 tries to push up the holder 5, and Ll is the force that the sliding surface 10 of the lid 2 and the rotating member 13 exerts. Distance from the position where is in contact to the bin 8 (rotation axis), L
2 is the distance from the rotation axis to the position where the holder 5 and the protrusion 11 are in contact, θ1 is the angle between the line orthogonal to L2 and the force f, and 02 is the angle between the line orthogonal to L2 and the force f It is the angle formed by °.

In this figure, if friction is ignored, the following relational expression holds: -f, = (tl-f-cosθ!-) -cos
02 [2 Therefore, the larger the dimension L2 of the rotating member 13 is compared to Ll, the greater the force f degrees that the rotating member 13 rotates due to the force f that tries to close the lid 2 and tries to lift the holder 5.
On the other hand, since the force f° is a force that pushes up the holder 5 and is not a force that directly lifts the cassette 1, the lifting of the cassette 1 causes insufficient fitting between the recess 3 and the positioning guide 6. It is possible to prevent positioning errors caused by
I can handle it.

[Effects of the Invention] As described above, according to the present invention, the lid can be closed with a simple structure in which both ends of a rotatably supported rotating member are brought into contact with the holders that hold the lid and the cassette. This has the advantage of preventing the force from pushing up the cassette and ensuring that the cassette is held in a predetermined position.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the glue rad opener device of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is an explanatory diagram for explaining how force is applied, and Fig. 4 is FIG. 2 is a side view showing a conventional glue rad oven device. 1...Cassette 2...Lid 5...Holder 10...Sliding surface 11...Protrusion part
13... Rotating member agent Patent attorney Nori Chika
Ken Zokuma Hiroshi Uji Figure 1 Figure 2 (a) Figure 2 (b) Figure 3 Figure 4 (a) Figure 4 (b)

Claims (1)

[Claims] One end is provided with a protrusion that comes into contact with a part of a movably supported holder that holds a cassette with a lid,
The other end has a sliding surface with a specific shape that slides against the lid of the cassette held in the holder and rotates the lid to open when the holder is moved, and the force to close the lid is applied to the holder that holds the cassette. A lid opener device comprising a rotating member whose both ends are rotatably supported.