JPH0580067B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette recorder using a cassette with a lid.

Conventional configuration and problems thereof In recent years, cassette recorders have come to be widely used in fields other than the audio field. Furthermore, as the performance of cassettes for audio applications continues to improve, cassettes with lids are becoming desirable in order to prevent fingerprints, dust, etc. from getting on the tape inside the cassette. In conventional tape cassettes, the tape peeks out from the opening, so there are problems with fingerprints, being bent by fingertips, and dirt and dust adhering to the tape, causing so-called drop-outs.

Purpose of the invention In order to solve the above-mentioned conventional problems, the present invention
The object of the present invention is to provide a cassette recorder equipped with a new cassette insertion guide device that can automatically open the cassette lid, which is necessary when using a tape cassette with a lid, which the authors have already proposed.

Structure of the Invention The present invention has a U-shaped lid which is opened and closed by vertically rotating the opening of a cassette main body having an opening on one side, and which is pulled away from the cassette opening surface in a substantially perpendicular direction in the closed state. The cassette recorder uses a cassette that can be opened, and includes an insertion guide means for guiding the insertion of the cassette in the direction of its main plane, and a U-shaped lid backward pressing means provided on the side of the insertion guide means. This cassette recorder also includes a cassette insertion detection means provided on the side, and has a cassette insertion guide device in which a U-shaped cover rearward pressing means performs a pressing operation in conjunction with the detection operation of the cassette insertion detection means. Therefore, the load during insertion is extremely small, and the U-shaped lid is pushed backwards at the end of insertion to release the lid from the closed position, allowing the cassette insertion guide device to move to the next predetermined playing position. This makes it possible to automatically start the so-called setting operation in a direction substantially perpendicular to the direction in which the cassette is inserted. Therefore, compared to a device that performs both lock release and automatic release operations during the setting operation, the moving distance required for setting can be extremely reduced, and the device can be made thinner.

DESCRIPTION OF EMBODIMENTS FIG. 1 is a perspective view of an embodiment of a tape cassette with a lid, showing the lid in a closed state. 1 is the cassette body, 2
is the upper half of the cassette, 3 is the lower half of the cassette, and 4 is the lower half of the cassette.
5 is a U-shaped lid, 5 is a lid side part, and the U-shaped lid 4 can be rotated by 90 degrees in the vertical direction to obtain an open state. Figure 2 is a top view showing the inside.
6 is a pivot shaft for the lid 4; 7 is a leaf spring;
is attached to the rear of the cassette. 8 is the rotation support shaft 6
The fitting hole is formed on the side surface of the cassette body 1 in a substantially triangular shape that tapers toward the rear. Thereby, the rotation support shaft 6 is guided and positioned when the lid 4 is rotated to open and close. 9 and 10 are dividing bars forming an opening on the front surface of the cassette body; 11;
Reference numerals 12 and 13 denote openings, and 14 a protrusion protruding from the inner surface of the lid 4, which engages with a recess provided on the opening surface or a recess for locking using the opening itself. 15 is a tape. FIG. 3 is a partial view showing the side surface thereof.

FIG. 4 is a side sectional view showing the main parts of the second embodiment regarding the locking of the lid 4, in which the entire lid 4 is connected to the recess 1 on the opening surface.
6 is shown inserted and engaged. 17 is a protrusion forming a recess for locking.

When using a cassette with a lid constructed in this way, the cassette in the closed state is inserted into the equipment,
It is desirable that the lid be automatically opened while the instrument is being set at the playing position. To do this, it is first necessary to remove the engaged state that prevents the lid 4 from rotating from the closed state in a substantially perpendicular direction from the opening surface against the force of the spring 7.

FIG. 5 is a perspective view showing the main parts of the cassette insertion guide device of the cassette recorder according to the embodiment of the present invention, in which 18 is the cassette insertion guide device, 19 is a guide groove for guiding the cassette 1, 20 is a cassette insertion detection member, 21 is bent at the tip of the cassette insertion detection member 20 toward the cassette entry path.
22 is a notch hole provided in the center of the cassette insertion detection member 20, and 23 is the cassette insertion detection member 2.
0 has a bend at the other end for a spring hook. 24 is a weak spring that urges the cassette insertion detection member 20 in the cassette ejection direction, and 25 is a spring hanger. 26 is a U-shaped lid rear pressing member;
It is made of leaf springs. 27 is its mounting screw;
Reference numeral 28 denotes a chevron-shaped bent portion of the U-shaped lid rear pressing member 26, which protrudes between the rear of the lid of the inserted cassette and the stepped portion of the cassette body.

29 is the tip of the U-shaped lid rear pressing member 26;
In the state before the cassette is inserted, the cassette is in contact with the cassette insertion detection member and is prevented from protruding onto the cassette insertion path. Reference numeral 31 denotes a lid closing abutting portion, which is automatically closed by abutting thereon when a cassette with an open lid is ejected. Reference numeral 32 represents a connecting portion between both the left and right guide portions. Arrow A indicates the insertion direction of the cassette, and arrow B indicates the direction of movement when the cassette is inserted and unlocked and set at the performance position.

FIG. 6 is a top view of the main parts showing the part where the cassette has been inserted and the locking has been released, and 30 is the guide and movement amount of the mounting seat and cassette insertion detection member 20 of the U-shaped lid rear pressing member 26. are regulated. 33
is an abutting member that comes into contact with the lower end of the cassette lid 4 to open the cassette lid 4 when the cassette insertion guide device 18 moves in the direction of arrow B.

The operation of the cassette recorder of this embodiment constructed in this manner will be described below.

When the cassette 1 is inserted in the direction of arrow A into the cassette insertion guide device in the state shown in FIG.
Near the insertion end point, the front of the cassette 1 comes into contact with the cassette insertion detection member 20 at its tip bent portion 21, and when the detection member 20 is moved, its one end 29 rests on the detection member 20 and is prevented from protruding. The pressing part of the U-shaped lid rear pressing member 26, that is, the mountain-shaped bent part 28, which had been in use, thrusts between the rear of the U-shaped lid and the stepped part of the cassette body, and presses and moves the cassette lid 4 forward. The lock is released and the state shown in Fig. 6 is achieved. From this state, when the cassette insertion guide device is moved in a direction substantially perpendicular to the cassette insertion direction, that is, in the direction of arrow B (setting operation), the lower end of the lid 4 comes into contact with the abutment member 33 and is pushed up and opened. The lid 4 is self-maintained in the open state.

When taking out a cassette, the lid which is open during the cassette ejecting operation following the resetting operation of the cassette insertion guide device 18 comes into contact with the abutting portion 31 and is then ejected. At the time of ejection, the lid rear pressing member 26 is pushed back by the ejected lid and allows the cassette insertion detection member 20 to return to its original state by the spring 24, returning to the state shown in FIG. 5 again.

FIG. 7 is a top view of a second embodiment of the mountain-shaped bent portion, showing a part of the cylindrical surface formed by bending. 34 is a U-shaped lid rear extrusion member, and 35 is a cylindrical bent portion which is integrally formed from a plate spring.

FIG. 8 is a top view of the third embodiment, where 36 is a lever and 37 is a pin set on the lever 36.

FIG. 9 is a top view of the fourth embodiment, in which 38 is a leaf spring, and 39 is a roller supported at its tip.

In this way, the shape of the pressing part of the chevron-shaped pressing member is not limited to a strict chevron shape, but can vary depending on the width, depth, inclination, etc. of the gap between the rear end of the U-shaped lid and the stepped part of the cassette main body. There are various possible shapes that can be easily penetrated. Further, the rear pressing member does not need to strictly press the rear side of the lid side portion, and may be a protrusion provided on the side portion so as to easily press the side portion toward the front.

Effects of the Invention The present invention comprises an insertion guide means for guiding the insertion of a cassette in the direction of its main plane, a U-shaped lid backward pressing means provided on the side of the insertion guide means, and a cassette insertion detection means also provided on the side. Since the U-shaped lid rear pressing means performs the pressing operation in conjunction with the detection operation of the cassette insertion detection means, the cassette can be inserted smoothly without any load until the insertion is completed, and the cassette can be inserted automatically when the insertion is completed. Since the rotational lock of the lid can be released immediately, the amount of movement for the next setting operation can be used to open the lid, so the amount of movement required for the setting operation can be extremely reduced. Furthermore, when the cassette is ejected, the U-shaped lid rear pressing member returns to its original position, and is held at the returned position by the returned cassette insertion detection member, so it can be kept on standby in preparation for subsequent use. I can do it.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of a cassette with a lid, Fig. 2 is a partial top view showing the inside, Fig. 3 is a side view of the main part, and Fig. 4 is another embodiment of the lid locking mechanism. FIG. 5 is a perspective view showing the main parts of the cassette insertion guide device in one embodiment of the present invention, FIG. 6 is a top view with the cassette inserted, FIGS. 7 and 8 9 are top views of other embodiments of the chevron-shaped pressing member, respectively. 4... U-shaped lid, 5... Lid side portion, 18... Cassette insertion guide device, 19... Guide groove, 20... Cassette insertion detection member, 26... U-shaped lid side rear pressing member.

Claims (1)

[Claims] 1. A cassette main body having an opening on one side, and a U-shaped lid that opens and closes by rotating the opening in the vertical direction.
A cassette recorder using a cassette in which the U-shaped cover can be opened by pulling the U-shaped cover away from the opening surface of the cassette in a substantially perpendicular direction when the U-shaped cover is in the closed state. It consists of an insertion guide means for guiding the insertion, a U-shaped lid backward pressing means provided on the side of the insertion guide means, and a cassette insertion detection means also provided on the side, and is interlocked with the detection operation of the cassette insertion detection means. A cassette recorder characterized in that the lever-shaped lid rearward pressing means is configured to perform a pressing operation. 2. The cassette recorder according to claim 1, wherein a spring-loaded chevron-shaped member is used as the U-shaped lid rearward pressing means. 3. A patent claim in which the cassette insertion detection means is constituted by a moving member biased by a spring in the cassette ejection direction, and the blocking state of the pressing operation of the U-shaped lid rear pressing member is released by the cassette insertion detection operation. The cassette recorder according to item 1. 4. The cassette recorder according to claim 1, characterized in that the amount of cassettes inserted is regulated by the cassette insertion detection means.