JPS6087482A - Cassette with cover - Google Patents

Abstract

PURPOSE:To allow one-side use securely by providing a pair of mating holes which have a guiding surface to guide along a cassette main body in front, slantly upward by restricting rotation in the direction where the cover does not open by said mating holes and by providing an abutting part to block the movement of the cover body at the front edge of the cassette main body. CONSTITUTION:To open the cassette cover which is closed, a part which is not abutting on an abutting part 10 of a front and lower edge of the cassette main body of the cover 4 may be pushed up, or a projecter 6 for opening/closing the cover may be pushed up. The cover 4 is rotated clockwise using the upper cassette main body as a supporting point and when rotated about more than 45 deg., the cover 4 quickly moves by itself by force of a spring 9 to be seated closely on the cassette main body upper surface. That is to say, the cover quickly acts and is stably retained at an open/close 2 position. When the cover 4 changes from an open condition to a close condition, it makes an opposite movement to the previous; where the cover pushes through forward along the right edge of the cover 4. When the cover 4 is intentionally pressed downward, the cover 4 is restricted by the left side wall of a mating hole 7 and blocked to rotate counterclockwise.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a cassette 1-, and more particularly to a cassette with a lid such as an audio cassette or a video cassette.

Conventional configurations and their problems In recent years, there has been a trend toward higher density magnetic recording, from audio to video, and even for computer memory, and it is necessary to avoid dust, dirt, fingerprints, etc. from adhering to the tape. It is increasing. Therefore, it has been proposed in the past to put a lid on the opening on the front of the cassette, and this has already been implemented in video cameras and the like. However, all of these systems have complicated mechanisms, and the dead space caused by the lid when opened is large, which is a problem due to the miniaturization of equipment. To provide a complete single-sided cassette with a lid that has an extremely simple structure, operates reliably, and has extremely little dead space.

Furthermore, the present invention prevents the lid from turning in a direction that should not be opened when using one side! The purpose is to prevent 1I71 and obtain reliable operation.

Structure of the Invention The present invention has a cassette structure consisting of a cassette body and a U-shaped lid that opens and closes the opening of the cassette body. A pair of fitting holes each having a guide surface that engages with a rotating support shaft provided in the main body and guides the main body forward and diagonally upward; It is a cassette with a lid constructed with an energizing means to switch between the two open and closed positions with a clicky feel, and there is very little dead space, and the fitting hole restricts the lid from rotating in the direction that it will not open. Furthermore, by providing a contact part on the front edge of the cassette body to prevent movement of the lid body, reliable single-sided use is possible.Explanation of the Embodiment Figure 1 shows a cassette in an embodiment of the present invention. FIG. 2 is a side view showing the closed state, and FIG. 2 is a side view showing the open state. 1st. In Figure 2, 1 is the upper half of the cassette, 2 is the lower half of the cassette, 3 is the opening on the front of the cassette, 4 is the cassette 1-end, 6 is the rotation of the cassette lid 4, the support shaft, and 6 is the front side of the cassette lid. The lid opening/closing protrusion 7 is a fitting hole for the lid rotation support shaft 6 of the cassette, and is formed diagonally upward toward the front at the butt of the lower half of the cassette and the lower half of the cassette. There is. Reference numeral 8 is a bottle for a spring handle formed integrally with the lower cassette half 2, and reference numeral 9 is a spring whose one end is hung on the cassette lid rotation support shaft 5, which always urges the cassette lid 4 backward. Reference numeral 10 denotes a stop portion for preventing movement of the cassette lid 4, which protrudes from the lower edge of the cassette body.

Figure 3 is a top view showing the inside of the case no. 1-, where the reel-to-reel tape 11 is stored, and Figure 4 is a side sectional view showing details of the main parts of the lid. The total thickness of the front part of the cassette (116 mm), f is the pivot shaft 5 from the inner surface of the lid 4.
-! Indicates the distance. Figure 6 shows the guide direction θ of the fitting hole as 4.
Fig. 6 shows the position of the lid in the open/open state in relation to the fitting hole and the position of the pivot shaft relative to the fitting hole in various embodiments of the present invention. In the figure, the dotted line indicates the position of the cap in the open state.

The operation of the cassette according to the embodiment of the present invention constructed as described above will be explained. In order to open the cassette lid in the closed state shown in FIG.
0, or push up the lid opening/closing protrusion 6f. Since the lid 4id is biased rearward by the spring 9, the lid 4 rises along the front surface of the cassette where the opening is located. At this time, the rotation support shaft 6il-j:
Due to the action of the force of the spring 9), the cassette 4, which rises while being guided by the side surface of the fitting hole 7, rotates clockwise using the entire upper edge of the cassette main body as a fulcrum, and rotates over approximately 46 degrees. Then, the lid 4 rapidly moves by itself due to the force of the barbs 9, and the lid 4 fits tightly against the lower surface of the cassette body as shown in FIG. That is, a click action is obtained and the device is stably held in the two open and closed positions. At this time, the pivot shaft also returns to its original position, that is, the same position as in the closed state. When changing from the open state (Fig. 2) to the closed state, perform the opposite movement from the previous time by pushing the right end of the lid 4 forward from the state shown in Fig. 2. When trying to push it down, the Z of the fitting hole 7 is restricted by the wall surface, and the rotation of the lid 4 in the opposite 11, - needle direction is prevented. However, the locus when opening and closing the lid 4 is minimized, and the amount of movement of the pivot shaft 5 is also minimized, which is ideal.
When the fitting hole 7 is larger than the diameter of the J+l dynamic support shaft, the f1711i/I will be slightly larger due to the play. The upper part opens. This is because the rotation axis is 4 at this contact point.
To prevent this, the total direction of the fitting hole 7 should be larger than 46° (Fig. 61), or as shown in Fig. 6 (6), unnecessary rotation can be avoided. 11- Can prevent movement.

Further, since the lid opening/closing projections 6 are provided on both sides of the cover 4, it is possible to realize a complete cassette mounting device that opens and closes using these projections. If the relationship between the height m from the center in the closed state and the distance e from the rotation support shaft 6 is 'free≧m', the cassette loading device will automatically open when inserted in the closed state, and will open automatically when inserted in the open state. A mechanism that automatically closes when discharged can also be realized very easily. Furthermore, since the cassettes are vertically asymmetrically arranged with respect to the center line, it is easy to prevent erroneous insertion of a single-sided cassette.

In addition, by providing the abutting part on the lower edge of the front of the main body almost all the way (there may be a part with an assistant), it is possible to prevent the bottom of the lid from being pushed up. Therefore, it is possible to prevent the lid from being opened by mistake while handling the cassette. Effects of the Invention The present invention consists of a cassette body and a U-shaped lid body that opens and closes the opening 1" portion of the cassette body. The entire cassette consists of a pair of pivot shafts provided on the sides of the U-shaped lid and a pivot shaft provided on the cassette body, and the pivot shafts guide the cassette body forward and diagonally upward. It is a cassette with a lid that is composed of a pair of fitting holes with a surface and a biasing means for biasing the cassette support shaft against the cassette body, and the switch can be switched crisply between the two opening and closing positions with a full click feeling. It can be stably held in each opening and closing position. Furthermore, since the lid body is in close contact with the cassette body, the dead space before and after opening and closing, as well as the dead space during opening and closing operations, is extremely small, which is extremely advantageous in terms of miniaturization. In addition, various fitting holes or abutting parts provided on the front edge of the main body ensure that the cover is prevented from moving, and it is completely possible to prevent the cover from being accidentally opened while handling the cassette. It is something. Also, the configuration is extremely simple and can be implemented at low cost.

[Brief explanation of drawings]

FIG. 1 is a side view showing the closed state of the cassette in an embodiment of the present invention, FIG. 2 is a side view showing the opened state (111+ side view, FIG. 3 is a top view showing the inside of the cassette, and FIG. 4 is a side view showing the cassette in the closed state. In Fig. 6, a side sectional view showing the main parts, the guiding direction of the fitting hole is 45°.
FIG. 6 is a side view of a larger embodiment of the present invention.
... Lid rotation support shaft, 9. River... Spring, 1o...
・Abutting body. Figure 1 Figure 3 Figure 4. ,, 1°0

Claims (1)

[Claims] (1) - Consists of a cassette body with an opening on the side, and a U-shaped body that fully opens and closes the opening. A pair of 1iils installed on the side of the U-shaped lid! The IUj support shaft, a pair of fitting holes on the side of the cassette body with 11 guide surfaces that guide the rotation support shaft diagonally upward toward the front of the cassette body, and A cassette I with a lid, characterized in that it comprises an energizing means for energizing the cassette I. (2) Feature r1, characterized in that the cassette body is constructed by abutting the upper and lower halves, and a fitting hole is formed at the abutting portion of the upper and lower halves to fit with the pivot shaft of the lid body. Point 'ff of claim 1 (height of the cassette): A pair of fitting holes having guide surfaces for guiding the rotation support l14II diagonally upward toward the front of the through cassette 1. A force centrifuge with a lid according to claim 1, which has all the features. HH (4) f=-9 height h=-2 from the front of the cassette body
2. A case 1-3 (5) with a lid according to claim 1, characterized in that the supporting shaft is fully guided by rotating approximately 45 degrees upwards toward the front of the case 1 from a point 2. 2.) The lid attaching force centrifuge according to claim 1, characterized in that a protrusion for opening and closing the lid is provided on the front side of the lid asymmetrically with respect to the center line of the height of the cassette. (6) Distance 4 from the pivot axis of the protrusion for opening and closing the lid
5. The cassette with a lid body according to claim 4, characterized in that the Iu length from b to 1 Alffl'a = 6 shims. (A cassette with a lid according to Claim 1-1, characterized in that the total guiding direction of the rotational shaft is 45 degrees or more. (8) Movement of the lid to the front edge of the lower part of the cassette main body. The lid attaching force cent according to claim 1, characterized in that a contact portion is provided to prevent this.