JPH0640431B2 - Tape cassette - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tape cassette used in a digital audio tape recorder or the like.

2. Description of the Related Art In recent years, tape cassettes have been widely used for audio and video. Particularly in recent years, the technology for digitizing audio has advanced, and a tape cassette for digital audio has been proposed and implemented in a new form.

An example of the above-described conventional tape cassette will be described below with reference to the drawings.

2 to 8 show the state of implementation of the conventional tape cassette. Figure 2 is a top view of the tape cassette.
Is a cassette body, and 2 is a rotating lid that opens and closes the front opening. FIG. 3 is a side view thereof, and 3 shows the accommodation in a closed state with a sliding lid covering the opening on the bottom surface of the cassette. Arrow A indicates the sliding direction when the sliding lid is opened. Figure 4 is its front view.
Is a cutout portion provided on the rotary lid 2, and a projection provided on the front surface of the sliding lid 3 is seen. Reference numeral 5 is a cutout portion similarly provided on the rotary lid 2, and reference numeral 6 is a locking projection for blocking the movement of the sliding lid 3 and locking it.

FIG. 5 is a bottom view showing the place where the sliding lid 3 is removed, and 7 is an opening provided on the bottom surface of the cassette body into which a member for pulling out the tape at the time of use is inserted. 8 and 9 are holes into which the tape drive shaft is inserted, 10 are locking projections that lock the sliding lid 3, and 1
Reference numeral 1 denotes an arm portion integrally forming a part of the lower surface of the cassette body 1, which is elongated in the sliding direction of the sliding lid 3 and elastically supports a locking projection 10 at its tip. FIG. 6 is a side view thereof, and 12 is a groove portion with which a part of the sliding lid 3 is engaged and guided.

FIG. 7 is a side sectional view showing the detailed shape of the locking projection 10.

FIG. 8 is a top view of the sliding lid 3, and 13 and 14 are openings for opening the tape drive shaft insertion hole when the sliding lid 3 moves to open the opening 7, and 15 and 16 are sliding. The locking projection 10 penetrates and engages with the opening for locking the lid 3 in the open / close 2 position.
Reference numerals 17 and 18 denote engaging portions with which the sliding lid 3 engages with the groove 12 of the cassette body, and reference numerals 19 and 20 denote protrusions, which are notches 4 of the rotary lid 2.
The drive member when the sliding lid 3 is opened comes into contact with the driving member. Reference numeral 21 is a contact portion of a spring (not shown) for urging the sliding lid 3 forward, and 22 is an opening 1 on the lower surface of the sliding lid 3.
It is a groove provided along the lines 5 and 16.

The operation of the tape cassette configured as described above will be described below.

First, the cassette in which the rotating lid 2 and the sliding lid 3 are closed as shown in FIG. 3 enters along the notch 5 and the groove 22 when inserted in the direction opposite to the arrow A. The engagement lid (not shown) disengages the engagement projection 10 and the opening 15 from the engagement release member (not shown). Is pushed open against the spring bias. Locking protrusion 10 at the push open position
There is an opening 16 at the position, and this open state is locked and held. When the rotary lid 2 is rotated upward from this state, the front opening is opened.

In order to close the lid, first, the pivoting lid is closed, and then the locking projection 1 is moved by the locking release member by moving the cassette in the ejection direction.
When 0 is pushed up and the engagement with the opening 16 of the sliding lid 3 is released, it is returned to the closed position by itself by the spring biasing force and locked.

Problems to be Solved by the Invention However, in the above-mentioned structure, since the elastic arm 11 having the locking projection 10 is formed long in the sliding direction of the sliding lid 3, the locking force has a difference in direction. Occurs, it works strongly against the movement from the closed position toward the open position, and it works weakly against the movement from the open position toward the closed position. There is a problem that it causes various troubles in the cassette transfer means.

In view of the above problems, the present invention provides a tape cassette that is strong against movement in any direction and that can be securely held and held without a difference in direction.

Means for Solving the Problems In order to solve the above problems, the tape cassette of the present invention has a sliding lid slidable between two positions and a sliding distance in the sliding direction of the sliding lid. Two openings provided in the sliding lid at intervals, an elastic arm extending in a direction orthogonal to the sliding direction of the sliding lid, provided on the main body side, and engaged with the opening provided on the elastic arm It has a structure called a locking projection.

Operation According to the present invention, there is no difference in the direction of the locking force due to the above-mentioned configuration, and the locking and holding can be surely performed even if the locking force is moved in any direction.

Embodiment A tape cassette according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the lower surface of the tape cassette of one embodiment of the present invention from which the sliding lid is removed. 1 in FIG.
0 is a locking protrusion, 11 is an elastic arm that supports the locking protrusion 10,
The elastic arm 11 is provided so as to be orthogonal to the sliding direction of the sliding lid 3.

Since it is configured in this way, it acts under the same condition for the movement of the sliding lid in any direction, and the difference in direction caused by the escape and intrusion of the elastic arm as in the conventional example is eliminated. It can be securely retained without being lost.

Further, the elastic arms provided in the orthogonal direction may cause a slight bending in the direction of the moving force when a moving force against the locking and holding is applied, but at this time, the elastic arms are provided to form the elastic arms. Since it stops with a very small movement of the width of the surrounding pores, the frictional force generated at the abutting part works as if the strength of the elastic arm apparently increased, and the locking and holding is stronger and more reliable. Becomes

EFFECTS OF THE INVENTION As described above, according to the present invention, a sliding lid that is slidable between two positions of a main body and a sliding lid is slid at an interval corresponding to a distance in the sliding direction of the sliding lid. Two openings provided in the lid, an elastic arm extending in a direction orthogonal to the sliding direction of the sliding lid and provided on the main body side, and a locking projection provided on the elastic arm and engaging with the opening. By providing the, it is possible to securely and securely hold the sliding lid with no direction difference.

[Brief description of drawings]

1 is a bottom view of the main body of the tape cassette in the embodiment of the present invention, FIG. 2 is a top view of a conventional tape cassette, FIG. 3 is a side view thereof, FIG. 4 is a front view thereof, and FIG. FIG. 6 is a bottom view of the main body, FIG. 6 is a side view thereof, FIG. 7 is a side sectional view showing details of the locking projections, and FIG. 8 is a top view of the sliding lid. 1 ... Cassette body, 2 ... Rotating lid, 3 ... Sliding lid, 7
...... Lower surface opening, 10 ...... Locking protrusion, 11 ...... Elastic arm.

Claims (5)

[Claims] 1. A main body and a sliding lid which is slidable between two positions of the main body, and two openings provided in the sliding lid at intervals according to a sliding distance in a sliding direction of the sliding lid, A tape cassette, comprising: an elastic arm extending in a direction orthogonal to the sliding direction of the sliding lid, the elastic arm being provided on the main body side; and a locking projection provided on the elastic arm and engaging with the opening. . 2. The tape cassette according to claim 1, further comprising an urging means for urging the sliding lid in one direction. 3. The tape cassette according to claim 1, wherein the elastic arm is formed integrally with the main body. 4. A tape cassette according to claim 1, wherein the sliding lid covers the opening on the bottom surface of the main body. 5. The tape cassette according to claim 1, further comprising a hitting portion for restricting a moving amount of the elastic arm in a direction orthogonal to the lengthwise direction.