JPH06101164B2 - Cassette loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device for mounting a cassette having an openable / closable lid while opening the lid.

Configuration of Conventional Example and Problems Thereof A conventional cassette mounting device will be described below. First
FIG. 1 is an exploded view of a conventional cassette mounting apparatus, and FIGS. 2 to 3 are sectional views showing essential parts of the conventional cassette mounting apparatus. Reference numeral 1 is a lid provided on the cassette 2 and rotatable around a lid support shaft 3. Reference numeral 4 denotes a leaf spring provided with a lock release lever 5 at its tip,
Is fixed to the cassette holder 6 for holding the.

Reference numeral 7 denotes a lid lock piece, which is configured to be movable around a lid lock piece support shaft 8 pivotally supported in the cassette 2, and projects from a side surface 9 of the cassette 2 to lock the lid 1 in a closed state. . Reference numeral 10 denotes a lid lock release piece, which is planted in the lid lock piece 7 and projects from the side surface 9 of the cassette 2. The lock release lever 5 provided at the tip of the leaf spring 4 fixed to the cassette holder 6 presses the lid lock release piece 10 through the window 11 provided in the cassette holder 6 to support the lid lock piece 7 together with the lid lock piece 7. It is configured to rotate around the shaft 8.

The operation of the conventional cassette mounting apparatus configured as described above will be described below.

When the cassette 2 in which the lid 1 is locked by the lid lock piece 7 is inserted into the cassette holder 6 in the direction of arrow A, a lock provided at the tip of the leaf spring 4 is provided until the cassette 2 reaches the position shown in FIG. The release lever 5 is held at a position where the leaf spring 4 comes into contact with the cassette holder 6, but when the cassette 2 reaches the position shown in FIG. 3, the lock release lever 5 is biased by the lid 1 and the leaf spring 4 is indicated by an arrow. Elastically deforms in the B direction. When the cassette 2 is inserted to the position shown in FIG. 2, the lock release lever 5 presses the lid lock release piece 10 by the elastic force of the leaf spring 4 so that the leaf spring 4 comes into contact with the cassette holder 6. Return to. Lid lock release piece 10 planted in lid lock piece 7
Is pressed by the lock release lever 5 to rotate around the lid lock piece support shaft 8 together with the lid lock piece 7 that holds the lid 1 in the closed state. As a result, the lid 1 becomes rotatable around the lid support shaft 3, and the cassette 2 is mounted while the lid 1 is opened by the lid opening hook 12 provided outside the cassette mounting apparatus.

However, in the above-described configuration, the lock release lever 5 is not operated until the cassette 2 is inserted into the cassette holder 6.
Since the leaf spring 4 is in the position of contacting the cassette holder 6, when the cassette 2 is inserted into the cassette holder 6, the tip of the lid 1 urges the lock release lever 5 while elastically deforming the leaf spring 4. There must be. Therefore, when inserting the cassette 2 into the cassette holder 6,
A feeling of strangeness is caused mainly by the resistance force acting by the elastic force of the leaf spring 4.

Further, in order to reduce the discomfort that occurs when the cassette 2 is inserted into the cassette holder 6, the amount of protrusion of the lock release lever 5 into the cassette holder 6 is reduced, or the shape of the tip of the lock release lever 5 is changed to the lid 1. If you make it into a shape that is easily biased by the cassette holder 6
When the lid lock release piece 10 is located away from the lock release lever 5 due to rattling of the cassette 2 inside the container and various molding errors of the cassette 2, the lock release lever 5 Cannot project the lid lock releasing piece 10 sufficiently until the lid lock piece 7 protruding from the side surface 9 of the cassette 2 and hooking the lid 1 in the closed state surely enters the inside of the cassette 2. 1 has a problem that the cassette 2 is mounted without being opened by the lid opening hook 12 and damages the device and the cassette 2.

An object of the present invention is to solve the above-mentioned problems of the related art. When the cassette is mounted, the lock holder is provided with a lock release lever by an inclined projection installed on the side plate that is melted in parallel along the path that the cassette holder moves. By urging the lid lock release piece to press it, the cassette can be inserted smoothly into the cassette holder without causing any discomfort, and the cassette may be rattled inside the cassette holder or the molding error may be large. It is an object of the present invention to provide a cassette mounting device capable of mounting a cassette while surely opening the lid even when the cassette is inserted into the cassette holder.

The present invention relates to a cassette holder that holds a cassette having a lid that can be opened and closed, a lid lock piece that locks the lid in a closed state, and a lid lock release piece that is planted in the lid lock piece, and the cassette. A lock release lever rotatably provided around a lock release lever support shaft embedded in the holder and the lock release lever are urged around the lock release lever support shaft and in a direction away from the cassette holder. Biasing means, a side plate provided in parallel along a path along which the cassette holder moves, and an inclined projection provided on the side plate, and the lock release lever when the cassette is inserted into the cassette holder. Is urged by the urging means to a position where it does not press the lid lock release piece, and when the cassette is mounted, the cassette holder is The lid lock piece is pushed by urging the lock release lever and pressing the lid lock release piece so that the inclined projection opposes the urging force of the urging means in the middle of the path of shifting to the flat state. Since the cassette holder is configured to be driven, and the cassette holder is vertically moved along the inclined projection while maintaining the biasing state of the lock release lever, the cassette holder can be smoothly moved to the cassette holder. Can be inserted into the cassette holder, and even if the cassette is rattled inside the cassette holder or a cassette with a large molding error is inserted into the cassette holder, the lid lock release piece can be fully operated until the lid lock piece is reliably driven. It is possible to configure the lock release lever so as to press.

Description of Embodiments FIG. 4 is an exploded view of a cassette mounting apparatus according to an embodiment of the present invention, and FIGS. 5 to 6 are sectional views showing essential parts of the cassette mounting apparatus of the present invention. is there. The same members as those in the conventional example are given the same numbers and their explanations are omitted. Reference numeral 21 is a cassette holder for holding the cassette 2. Reference numeral 22 denotes a lock release lever, which is rotatably supported by a lock release lever support shaft 23 planted in the cassette holder 21, and a lock release lever spring support shaft 24 planted in the cassette holder 21 and the lock release lever 22. It is urged in the direction of arrow C by a lock release lever spring 25 as an urging means provided between the two. Reference numeral 26 is a side plate installed in parallel along the arrow D direction and the arrow E direction, which are paths along which the cassette holder 21 moves when the cassette 2 is mounted.
The inclined projections are fixed to 27, and are installed in parallel along the direction of arrow E, which is the path through which the cassette holder 21 descends when the cassette 2 is mounted.

The operation of the cassette mounting apparatus of this embodiment constructed as above will be described below.

When the lock release lever 22 is biased in the direction of arrow C by the lock release lever spring 25,
When the cassette 2 in which the lid 1 is locked by the lid lock piece 7 is inserted into the cassette holder 21 in which the tip of 22 does not touch the lid 1, the cassette holder 21 mounts the cassette 2. It is horizontally moved in the direction of arrow D by a driving means (not shown). Then, when the cassette holder 21 moves to the position shown in FIG. 6, the lock release lever 22 is biased by the inclined projection 26 fixed to the side plate 27 and resists the elastic force of the lock release lever spring 25 to support the lock release lever. It rotates about the shaft 23 in the direction of arrow F. As a result, the tip of the lock release lever 22 passes through the window 11 provided in the cassette holder 21, and the lid lock release piece 10 planted in the lid lock piece 7 that locks the lid 1 in the closed state.
Is pressed and the lid lock releasing piece 10 is maintained in a state in which the lid lock piece 7 and the lid lock piece 7 are fully rotated around the lid lock piece supporting shaft 8, and the lid 1 is movable around the lid supporting shaft 3. . Then, the cassette holder 21 is lowered in the direction of arrow E by a driving means (not shown), and accordingly, the lock release lever 22 slides along the inclined projection 26 while maintaining the state of being biased by the inclined projection 26. 2 is mounted while the lid 1 is opened by a lid opening hook 12 provided outside the cassette mounting apparatus. Further, when the cassette 2 is taken out from the cassette holder 21, when the cassette holder 21 horizontally moves in the direction of arrow G from the position shown in FIG. Due to the elastic force of the lock release lever spring 25 that tries to urge the lock release lever spring 25, the lock release lever spring 25 rotates around the lock release lever support shaft 23 in the direction of the arrow C as the cassette holder 21 moves, and the tip of the lock release lever 22 is closed. The cassette 2 is taken out of the cassette holder 21 after being held in a position not touching.

As described above, according to the present embodiment, when the cassette is mounted, the inclined projections installed on the side plates provided along the path along which the cassette holder moves move the lock release lever provided on the cassette holder, By configuring the lid lock piece to be driven by pressing the lid lock release piece implanted in the lid lock piece, the tip of the lock release lever does not touch the lid when inserting the cassette into the cassette holder. The cassette can be inserted smoothly into the cassette holder without any discomfort, and the lock release lever can be configured to sufficiently press the lid lock release piece, which may cause rattling of the cassette inside the cassette holder. Even if you insert a cassette with a large molding error into the cassette holder, you can drive the lid lock piece securely. Can.

EFFECTS OF THE INVENTION As described above, in the cassette mounting device of the present invention, the lock release lever rotatably provided around the lock release lever support shaft planted in the cassette holder and the lock release lever are provided. A biasing means that biases the shaft in a direction away from the cassette holder, a side plate provided in parallel along a path along which the cassette holder moves, and an inclined projection provided on the side plate, When mounting, by pressing the lid lock release piece by urging the lock release lever so that the inclined projection opposes the urging force of the urging means in the middle of the path where the cassette holder moves horizontally. The lid lock piece is configured to be driven, and the cassette holder is configured to move vertically along the inclined protrusion while maintaining the biasing state of the lock release lever. As a result, the cassette can be inserted smoothly into the cassette holder without any discomfort, and even if the cassette is rattled inside the cassette holder or a cassette with a large molding error is inserted into the cassette holder, the cassette can be reliably inserted. The cassette can be installed with the lid open, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is an exploded view of a conventional cassette mounting device, and FIG.
FIG. 3 and FIG. 3 are sectional views of the main part of the same, FIG. 4 is an exploded view of the cassette mounting device in the embodiment of the present invention, and FIGS. 5 and 6 are sectional views of the main part. 1 ... Lid, 2 ... Cassette, 7 ... Lid lock piece, 10
...... Lid lock release piece, 21 ...... Cassette holder, 22
…… Unlock lever, 26 …… Inclined protrusion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 55-103872 (JP, U) Jikken 3-33962 (JP, Y2) Jikken 63-19949 (JP, Y2) Jikken 1- 24774 (JP, Y2) Actual public Sho 60-37743 (JP, Y2) Actual public 3-5010 (JP, Y2)

Claims (1)

[Claims] 1. A cassette holder for holding a cassette having a lid that can be opened and closed, a lid lock piece that locks the lid in a closed state, and a lid lock release piece that is planted in the lid lock piece, and the cassette holder. A lock release lever rotatably provided around the implanted lock release lever support shaft and a biasing member for biasing the lock release lever around the lock release lever support shaft and away from the cassette holder. Urging means, a side plate provided in parallel along a path along which the cassette holder moves, and an inclined projection provided on the side plate, and when the cassette is inserted into the cassette holder, the lock release lever is The cassette holder is urged by the urging means to a position where the lid lock release piece is not pressed, and the cassette holder is placed horizontally when the cassette is mounted. The lid lock piece is driven by urging the lock release lever and pressing the lid lock release piece so that the inclined projection opposes the urging force of the urging means in the course of the path. The cassette mounting device is configured as described above, and is configured such that the cassette holder moves in the vertical direction along the inclined protrusion while maintaining the biasing state of the cassette release lever.