JPH0519234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette with a lid, which has a lid that can be opened and closed at its opening.

Conventional structure and its problems In recent years, tape recorders have been trending toward Hi-Fi, high-density recording, and it has become necessary to cover the opening of the cassette to prevent dust and fingerprints from adhering to it. . This has already been implemented in video cassettes, etc., but for audio use it must be of a simple configuration, usable on both sides of A and B, and be realized at low cost.

Purpose of the invention The present invention solves the above-mentioned conventional problems.
To provide a cassette with a lid that has an extremely simple configuration and operates reliably.

Structure of the Invention The present invention provides a cassette lid that is opened and closed to block an opening on the front surface of the cassette, and has a lid that is elongated and elongated parallel to the main plane direction of the cassette in the closed state, and whose rear end is located at the position of the lid rotation axis. Since the cassette lid opening/closing protrusion is provided, the cassette lid can be automatically opened and closed using a slot-in type tape mounting device very easily. In other words, when a closed cassette is inserted in the direction of its main plane and a setting operation that is approximately perpendicular to the direction of the main plane begins from the insertion end position, the cassette lid opening/closing protrusion, which was facing horizontally, becomes a guide groove in the setting direction. The lid is automatically rotated and opened by being guided by the lid, and when it is reset, it rises as it is, and then it is automatically closed by the guide groove when it moves in the discharge direction. If the cassette lid is not self-held in the open position and automatically returns to its original position using a spring or the like, automatic opening and closing is possible only by engagement with the guide groove during setting.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a side view showing an embodiment of a cassette with a lid according to the present invention in a closed state, in which 1 is an upper half of the cassette, 2 is a lower half of the cassette, 3 is an opening in the front of the cassette body, and 4 is an opening in the front of the cassette body. The cassette lid, 5 is a cassette lid rotation support shaft, 6 is a projection for opening and closing the lid provided on the front outer surface of the cassette lid, 7 is a fitting hole for the cassette lid rotation support shaft 5, and the cassette upper half 1 and the cassette lower half It is formed in a substantially triangular shape that tapers toward the rear at the abutting portion of the two. Reference numeral 8 denotes a spring hanging pin integrally formed with the lower cassette half 2, and 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. FIG. 2 is a side view showing the open state, and FIG. 3 is a top view showing the inside of the cassette. Reference numeral 10 indicates a tape stored in the cassette. In a cassette constructed in this manner, the lid is stably held in each opening/closing position, and a click action can be used during the operation, allowing for crisp switching between opening and closing.

FIG. 4 is a side view of an embodiment of a cassette loading device using such a cassette, showing the cassette being inserted. In Fig. 4, 11 is the main body case, 12
13 is a cassette insertion opening of the main body case, 13 is a cassette holding part, and 14 is a guide groove provided on the inner surface of the cassette holding part, which guides the cassette lid opening/closing projection and allows passage thereof only when the cassette lid 4 is in the closed state. 15
16 is a cassette lid closing contact portion provided at the end of the guide groove, and 16 is a cassette pressing leaf spring provided on the upper surface of the cassette holding portion to hold the cassette within the holding portion. Guide shafts 17 and 18 guide the vertical movement of the cassette holder 13, 19 a chassis, and 20 a cassette positioning pin, which regulates the front, rear, left, and right positions and height of the set cassette. 21 is a pin that regulates the rear height of the cassette; 22 and 23 are pillars that support the chassis 19 within the case; and 24 are contact members for opening the cassette lid, which are located on the left and right sides of the cassette lid 4 and are placed on the chassis 19. installed. 25 is a contact portion.

FIG. 5 is a side view showing the position where the cassette holding part 13 has fallen from the state shown in FIG. part comes into contact with the cassette opening protrusion, and the lid 4
rotates clockwise around the rotation shaft 5, and the opening of the lid 4 is completed before the setting is completed.

During resetting, the cassette remains open and rises together with the cassette holding portion 13, resulting in the state shown in FIG. When the cassette ejecting operation is performed from this state, the cassette lid opening/closing protrusion 6 closes with the closing protrusion 15.
The lid 4 is rotated counterclockwise and closed.
It can be ejected and taken out in the closed state. In this way, the cassette lid opening/closing protrusion 6 is provided so as to be elongated parallel to the main plane direction when the lid is closed, and one end thereof is located at the position of the lid rotation support shaft 5, so that the moving direction and cutting when inserting and ejecting the cassette can be easily controlled. The cassette lid can be opened and closed automatically by simply guiding and restricting the cassette lid with the guide groove and the contact portion so as to match the direction of movement during resetting, and the cassette lid can always be taken out in the closed state.

In addition, if the cassette lid is not self-held in the open position and automatically returns to its original position using a spring, etc., automatic opening and closing will be possible only by engagement with the guide groove during setting.
It can be implemented without going through the state shown in the figure.

Incidentally, the operations of inserting and ejecting the cassette and moving the cassette holding section up and down are not limited to manual operation, and may of course be performed using driving force stored in a motor electromagnet, a spring, or the like.

Effects of the Invention The present invention provides a cassette with a lid that opens and closes an opening, and has a cassette lid that is elongated on the outer surface of the lid, parallel to the main plane direction of the cassette in the closed state, and whose rear end is located at the position of the lid rotation pivot. Since the opening/closing protrusion is provided, the cassette insertion and setting mechanism consists of an insertion operation in the direction of the main plane and, after the insertion operation, a setting operation of the cassette in a direction substantially perpendicular to the direction of the main plane. It is possible to open the cassette lid with each operation, and close the open cassette lid with each movement in the direction of the main plane during ejection. This prevents incorrect insertion of an open cassette, and also prevents the cassette from being inserted incorrectly during ejection. Since the cassette can always be taken out in a closed state, exposure of the recording medium such as tape when handling or storing the cassette can be prevented, and dirt, dust, fingerprints, etc. can be prevented from being attached. In addition, the abutment member for opening and closing can be simply kept on standby on the insertion/ejection path, and no moving parts such as levers are required, so the structure is extremely simple, it can be implemented at low cost, and the opening/closing operation is reliable. This is what you get.

Further, since the energizing means brings the cassette lid into close pressure contact with the cassette body in both the open and closed states, the opening can be completely closed in the closed state, and play and rattling of the lid can be prevented.

Furthermore, since the protrusion for opening and closing the cassette lid is always parallel to the moving direction of the cassette, the width of the relief groove and guide groove for the protrusion for opening and closing the cassette lid in the insertion and setting path of the cassette can be minimized, and the cassette can be guided stably. This can be done reliably.

[Brief explanation of drawings]

FIG. 1 is a side view showing the closed state of the embodiment of the lidded cassette according to the present invention, FIG. 2 is a side view showing the open state, FIG. 3 is a top view showing the inside, and FIG.
5 is a side view showing essential parts of an embodiment of a cassette loading device using a cassette according to the present invention, FIG. 5 is a side view showing the setting state thereof, and FIG. 6 is a side view showing the state immediately before ejection. 4...Cassette lid, 13...Cassette holding part,
15...Abutting part for closing the cassette lid, 25...Abutting part for opening the cassette lid, 19...Chassis.

Claims (1)

[Claims] 1. A cassette lid opening/closing protrusion is provided on the outer surface of the lid of a cassette with an opening opening/closing lid so that it is elongated in parallel to the main plane direction of the cassette and its rear end is located at the position of the lid rotation pivot in the closed state. A cassette with a lid, comprising a biasing means for biasing the lid rotation support shaft rearward, so that the cassette is self-retained in each opening and closing position.