JPH07169157A - Cassette loading device for videocassette recorder - Google Patents

Abstract

PURPOSE: To provide a simple cassette loading device with less number of parts. CONSTITUTION: A mechanism for selectively locking a cassette holder 40 to an upper plate and the mechanism for preliminarily opening the protective cover of a tape cassette, etc., are integrated. Then, an operation lever 50 provided with a locking projection 51 for locking the cassette holder 40 on one end and provided with a contact part 52 and an opening piece 53 on the other end is provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cassette loading device for a video cassette recorder. More specifically, when the cassette is inserted, the improved operation lever is provided which can prevent the movement of the cassette holder and can perform two operations of pre-opening the tape cassette protective lid as a pre-operation for the opening operation of the subsequent cassette lid. Cassette loading device.

[0002]

2. Description of the Related Art Usually, a cassette loading device has a fixing means for preventing the cassette holder from moving with respect to an upper plate fixed to a deck while a cassette is manually inserted. Have.
The cassette loading device also has means for pre-opening the cassette lid prior to the descending loading movement of the cassette and cassette holder for the subsequent substantially opening operation of the cassette lid. 5 and 6 show a holder locking mechanism 6 and a tape cassette lid pre-opening mechanism 7 used in a conventional cassette loading apparatus, which correspond to the above-mentioned fixing means and pre-opening means, respectively. .

As shown in FIG. 5, a holder locking mechanism 6 having a locking projection 6a and a contact portion 6b is rotatably fixed to a cassette holder 5a. This cassette holder 5a has a manually inserted cassette. It serves to store the cassette until it reaches a predetermined position and load the cassette to its operating position. The locking protrusion 6a is engaged with the hole 3a of the fixed upper plate 3 until the holder locking mechanism 6 is rotated.
Placed in 6 to limit the movement of the cassette holder,
The rotation of the locking mechanism is performed by contact between the insertion cassette advancing in the arrow direction and the contact portion 6b.

Preliminary opening mechanism 7 for the cassette lid shown in FIG.
Is generally axially attached to the cassette holder 5b in opposition to the holder locking mechanism 6 to preliminarily open the cassette protection lid 4a at a small angle for the subsequent substantial opening operation. The preliminary opening mechanism 7 has an opening piece 7b which is provided to project perpendicularly to the surface thereof, and a protruding arm 7a having a bearing surface 7c. When the position locking of the cassette holder 5b by the holder locking mechanism 6 is released, the cassette holder 5b begins to move in the direction of the arrow and the tape cassette 4
Is loaded into its working position. As the loading operation of the cassette holder 5b progresses, the preliminary opening mechanism 7 is rotated by the bearing surface 7c thereof being biased by the inclined surface 2a of the upper plate 2, and at this time, the opening piece is opened.
7a rotates the protective lid of the cassette by a predetermined angle.

In the above-mentioned conventional cassette loading apparatus, since the cassette holder locking mechanism 6 and the pre-opening mechanism 7 of the cassette protection lid are provided as separate parts from each other, an undesired problem in the cassette loading apparatus, for example, the number of parts is reduced. There are several problems such as increase, difficulty in designing and manufacturing. Therefore, if the two functions independently performed by the respective mechanisms are performed by one component, the cassette loading device can reduce the number of components with a simpler structure.

According to the present invention, a cassette having a simple structure and a small number of parts is formed by integrally forming means for selectively limiting the position of the cassette holder and means for opening the protective lid of the tape cassette at a predetermined angle. It is an object to provide a loading device.

[0007]

A cassette loading device for a video cassette recorder according to the present invention comprises a pair of side walls fixed to a deck, and a pair of side walls slidably mounted between the pair of side walls to form a VCR ( (Video Cassete Recorder) is a cassette loading device that houses a tape cassette to be inserted into the cassette and has a cassette holder for loading the tape cassette to its operating position, in which a locking groove is formed, and an inclined surface is provided. An upper plate fixedly mounted on the pair of side walls; a first orientation angle for fixing the position of the cassette holder, a second orientation angle when the position of the cassette holder is released, and a protective lid for the cassette. A plate-shaped body axially attached to the cassette holder between the third orientation angles to be opened, and when the body is at the first orientation angle,
A locking projection formed on the body so as to be engaged with the locking groove of the upper plate, and a projection of the plate-shaped body protruding from the plate-shaped body so as to be positioned on the insertion advance path of the cassette, and a cassette of the tape cassette. When the insertion into the holder is completed, the body is rotated from the first orientation angle to the second orientation angle by being biased by the tip of the cassette so that the locking protrusion is moved from the locking groove. And a contact surface for releasing the contact portion, a bearing surface protruding from the body and contacting the inclined surface of the upper plate as the cassette holder advances to rotate the body from the second orientation angle to the third orientation angle. A lever arm formed, and an operating lever having an opening piece that opens the protective lid upward when the body rotates from the second orientation angle to the third orientation angle; Bias the top plate Characterized in that it comprises an elastic means.

Further, the video cassette recorder of the present invention accommodates a pair of side walls fixedly mounted on the deck and a tape cassette slidably mounted between the pair of side walls to accommodate an inserted tape cassette. A video cassette recorder including a cassette loading device having a cassette holder for loading to an operating position, the upper part fixed to the pair of side walls, the locking groove being formed, the inclined surface being formed. A plate; between the first orientation angle for fixing the position of the cassette holder, the second orientation angle when the position of the cassette holder is released, and the third orientation angle for pre-opening the protective lid of the cassette. A plate-shaped body axially attached to the holder, and formed on the body so as to be engaged with the locking groove of the upper plate when the body is at the first orientation angle. The locking protrusion is projectingly provided on the plate-shaped body so as to be positioned on the insertion advance path of the cassette, and when the insertion of the tape cassette into the cassette holder is completed, the tip of the cassette contacts and biases the contact. To rotate the body from the first orientation angle to the second orientation angle to release the locking protrusion from the locking groove, and to advance the cassette holder by protruding from the body. A lever arm having a bearing surface that contacts the inclined surface of the upper plate to rotate the body from the second orientation angle to the third orientation angle, and the body moves from the second orientation angle to the third orientation angle. A cassette loading device including an actuating lever having an opening piece that opens the protective lid upward when pivoting; and elastic means for biasing the locking projection of the actuating lever to the upper plate. The features.

[0009]

Since the cassette loading device according to the present invention can perform both the function of selectively locking the cassette holder to the upper plate by one lever and the function of pre-opening the protective lid of the cassette, the number is smaller than the conventional one. Can provide VCR with simple structure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a cassette loading device for a VCR according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view of an operating lever used in a cassette loading device according to the present invention. As shown in FIG. 1, the operating lever 50 has a thin plate-shaped body, a lever arm having a bearing surface 55 and a locking projection 51 are formed at one end of the body, and a cassette contact portion 52 is formed at the other end. And an open piece 53 is projected.

2 to 4 are front views showing sequential operating states of the above-mentioned operating lever. As can be seen from these figures, the operating lever 50 is axially attached to the cassette holder 40 so that the locking protrusion 51 is biased toward the upper plate 30 by the coil spring 20, and the position of the cassette holder 40 is adjusted. Can be rotated between a first orientation angle for fixing the position, a second orientation angle for releasing the position fixing, and a third orientation angle for preliminarily opening the protective lid of the cassette.

The operation of the operating lever 50 will be described below with reference to the drawings.

First, until the tape cassette 60 inserted in the cassette holder 40 urges the contact portion 52 to contact,
As shown in FIG. 2, the operating lever 50 has a locking projection 51 with an upper plate.
It stops at the position of the first orientation angle that engages with the locking groove 31 formed in 30. Therefore, since the movement of the cassette holder 40 in the direction indicated by the arrow is restricted, when the tape cassette 60 is inserted into the cassette holder 40, the insertion operation can be performed without the holder 40 being moved by the inserted cassette 60. Done.

On the other hand, when the tape cassette 60 is inserted, the lid release switch (not shown) formed on the side surface of the cassette 60 is pressed by the release mechanism 70 formed on the cassette holder 40. , The lid 61 is in the openable state. The release mechanism 70 is a technique well known to those skilled in the art.

Immediately before the operation of inserting the tape cassette 60 into the cassette holder 40 is completed, the contact portion 52 is contact-rotated by the inserted cassette 60, and at this time, the operating lever is operated.
50 rotates from the first orientation angle to the second orientation angle. At the same time, the open piece 53 rotates and contacts the lower surface of the cassette protection lid 61. When the operating lever 50 rotates, the locking protrusion 51
Is released from the top plate, allowing the cassette holder 40 to load the tape cassette 60 into its operative position, as shown in FIG.

When the locking projection 51 is released from the upper plate 30,
The cassette holder 40 initiates a loading movement that advances the tape cassette 60 to its operating position. The bearing surface 55 of the lever arm 54 is biased by the sloping surface 32 of the upper plate 30 during the loading movement to cause the operating lever 50 to move.
Will be rotated from the second orientation angle to the third orientation angle.
As shown in FIG. 4, when the actuating lever 50 is rotated to the third orientation angle, the opening piece 53 of the actuating lever 50 is substantially a minute angle of the cassette protection lid 61 for opening the cassette. The protective lid 61 is opened.

[0017]

Since the cassette loading device according to the present invention can perform both the function of selectively locking the cassette holder to the upper plate and the function of pre-opening the cassette protection lid by one actuating lever, it is less than the conventional one. It can be composed of parts, which can reduce the manufacturing cost of VCR.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an operating lever used in a cassette loading device for a VCR according to the present invention.

FIG. 2 is a schematic plan view showing a sequential operating state of the operating lever of FIG.

FIG. 3 is a schematic plan view showing a sequential operating state of the operating lever of FIG.

FIG. 4 is a schematic plan view showing a sequential operating state of the operating lever of FIG.

FIG. 5 is a schematic front view showing a holder locking mechanism of a conventional cassette loading device.

FIG. 6 is a schematic front view showing a preliminary release mechanism of a cassette lid of a conventional cassette loading device.

[Explanation of symbols]

 20 coil spring 30 upper plate 31 locking groove 32 inclined surface 40 cassette holder 50 actuating lever 51 locking protrusion 52 contact part 53 open piece 54 lever arm 55 bearing surface 60 tape cassette 61 protective lid 70 release mechanism

Claims (2)

[Claims] 1. A VCR, which is slidably mounted between a pair of side walls fixed to a deck and the pair of side walls.
A cassette loading device having a cassette holder for accommodating a tape cassette to be inserted into the cassette and loading the tape cassette to its operating position, wherein a locking groove is formed, an inclined surface is provided, and the pair of side walls are provided. An upper plate fixed on the upper plate, a first orientation angle for fixing the position of the cassette holder, and a second orientation angle when the position of the cassette holder is released.
Third orientation angle and pre-opening of the protective lid of the cassette
A plate-shaped body axially attached to the cassette holder between the orientation angles, and a lock formed on the body so as to be engaged with the locking groove of the upper plate when the body is at the first orientation angle. A protrusion, projectingly provided on the plate-shaped body so as to be positioned on the insertion advance path of the cassette, and contacted and urged by the tip of the cassette when the insertion of the tape cassette into the cassette holder is completed. A contact portion for rotating the body from the first orientation angle to the second orientation angle to release the locking protrusion from the locking groove, and the contact portion protruding from the body and advanced by the cassette holder. A lever arm having a bearing surface that contacts the inclined surface of the upper plate to rotate the body from the second orientation angle to the third orientation angle, and the body rotates from the second orientation angle to the third orientation angle. When moving, the protection An actuating lever having an open piece of upward opening, a cassette loading apparatus which comprises an elastic means for biasing the locking projection of the actuating lever to the upper plate. 2. A cassette for accommodating a tape cassette to be inserted into a pair of side walls fixedly mounted on a deck and slidably mounted between the pair of side walls and to be loaded into its operating position. A video cassette recorder including a cassette loading device having a holder, wherein a locking groove is formed, an inclined surface is provided, and an upper plate fixed on the pair of side walls and the cassette holder are positioned. The first orientation angle to be fixed, the second when the position fixing of the cassette holder is released.
Third orientation angle and pre-opening of the protective lid of the cassette
A plate-shaped body axially attached to the cassette holder between the orientation angles, and a lock formed on the body so as to be engaged with the locking groove of the upper plate when the body is at the first orientation angle. A protrusion, projectingly provided on the plate-shaped body so as to be positioned on the insertion advance path of the cassette, and contacted and urged by the tip of the cassette when the insertion of the tape cassette into the cassette holder is completed. The first torso by
A contact portion for releasing the locking projection from the locking groove by rotating from the orientation angle to the second orientation angle, and a sloped surface of the upper plate that is protruded from the body and advanced by the cassette holder. A lever arm formed with a bearing surface that contacts and rotates the body from a second orientation angle to a third orientation angle;
And an operating lever having an opening piece that opens the protective lid upward when the body rotates from the second orientation angle to the third orientation angle, and an elasticity that biases the locking protrusion of the operating lever to the upper plate. Video cassette recorder having a cassette loading device including means.