JPH0479060A - Tape cassette loading device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape cassette loading device in a magnetic recording/reproducing device such as a video cassette recorder.

2. Description of the Related Art In recent years, there has been a demand for further miniaturization of helical scan type video cassette recorders (hereinafter abbreviated as VCR), and in order to meet this demand, efforts have been made to miniaturize each part. How close the tape cassette can be to the cylinder is one of the items that should be particularly considered in reducing the size of the vCR. It is important to devise a tape cassette mounting device in order to narrow the gap between the tape and the cylinder when the tape cassette is mounted and bring the tape cassette and cylinder closer to each other.

A conventional tape cassette loading device for a magnetic recording/reproducing device will be described below.

FIG. 12 is a side view of a conventional magnetic recording/reproducing apparatus at a position where a tape cassette is inserted.

In FIG. 12, 1 is a tape cassette, 2 is a cassette holder, 8 is a lid drop release member, 4 is a lid opening member, 5 is a cassette carrier, θ and 7 are tension springs, 8
1 is a cylinder, 9 is a cylinder mounting screw, 10 is a chassis, 11 is a post, 12 is a pinch roller, and 13 is a reel stand.

The operation of the magnetic recording/reproducing apparatus configured as described above will be described below. 7 cylinder 8 is fixed to cassette holder 2 with cylinder mounting screws 9. The cassette holder 2 is at a position where the tape cassette 1 can be inserted, and at this position the tape cassette 1 is inserted in the direction of arrow A. The tape cassette 1 advances toward the back along the cassette guide surface 5d of the cassette carrier 5. The protrusion 3a provided on the lid lock release member 3 when the tape cassette 1 is inserted
The lid lock 1a comes into contact with the lid lock 1a, and the lid lock 1a is released. Thereafter, the lid lock release member 3 moves together with the tape cassette 1 while sliding on the cassette guide surface 5d against the tension of the tension spring 6 stretched between the lid lock release member 3 and the cassette carrier 5.

With this movement, the pin 3b protruding from the lid unlocking member 3 moves within the long hole 4a of the lid opening member 4. As a result, the lid opening member 4 pivotally attached to the cassette carrier 5 rotates about the support shaft 4b, and the lid opening pin 4c protruding from its free end pushes up the cassette lid 1b. It will be released. After the cassette lid 1b is opened, the lower front surface 1f of the tape cassette 1 comes into contact with the projection 5C, so the cassette carrier 5 resists the tension of the tension spring 7 stretched between it and the cassette holder 2. It starts moving together with the tape cassette 1 while being guided by the guide grooves 2b and 2C into which the pins 5a and 5b are loosely fitted, respectively. This movement occurs when the pin 5a comes into contact with the end of the guide groove 2b and the tape cassette 1
This continues until the insertion of the tape 1e is completed, and the tape 1e and the cylinder 8 come into contact at the position where the insertion is completed. When the insertion is completed, the tape cassette 1 is locked to the cassette holder 2 by a cassette locking mechanism (not shown).

FIGS. 13 and 14 are a side view and a plan view, respectively, of a main part of a conventional magnetic recording/reproducing apparatus at a position where a reel and a reel stand engage with each other. After the tape cassette 1 is inserted into the cassette holder 2, by pressing the cassette holder 2, the cassette holder 2 containing the tape cassette 1 is rotated against the biasing force of a Neluda biasing spring (not shown). Rotate around 2a as a fulcrum. The rotation of the cassette holder 2 continues until the reel 1c and the reel stand 13 engage with each other, and the reel 1
The cassette holder 2 is locked to the chassis 10 by a cassette holder locking mechanism (not shown) at the position where the reel stand 13 engages the cassette holder 2. At this time, the reel lock release pin 14 is inserted into the glue lock release hole 1g on the bottom of the tape cassette 1, and the post 11 and the pinch roller 12 are inserted into the bottom opening 1d of the tape cassette 1.
The tape cassette 1 is inserted into the tape cassette 1.

After this, the tape 1e is further pulled out and completely wrapped around the cylinder 8.

Problems to be Solved by the Invention However, in the above conventional configuration, after the lid is unlocked and opened when inserting the tape cassette,
By bringing the tape into contact with the cylinder attached to the cassette holder, it is possible to bring the tape cassette and cylinder closer together simply by inserting the tape cassette without causing fatal damage to the tape, but it is also possible to bring the tape cassette and cylinder closer together simply by inserting the tape cassette. The reel of the tape cassette cannot be moved any closer than that, because the reel lock of the tape cassette is not released. For this reason, the tape cassette and the cylinder cannot be brought close enough to each other at the position where the reel and the reel stand engage, resulting in a problem that further miniaturization of the vCR cannot be achieved.

The present invention solves the above-mentioned conventional problem, and allows the tape cassette and cylinder to be brought so close together that the tape is wrapped around a part of the cylinder at the position where the reel and the reel stand engage. The purpose of the present invention is to provide a tape cassette mounting device that can be used.

Means for Solving the Problems To achieve this object, the tape cassette loading device of the present invention includes a cassette holder that holds and guides a tape cassette, and an IJ that is provided on the cassette holder and that releases the reel lock of the tape cassette. -71/consisting of a lock release means and a moving means for moving the reel lock release means to a first position located outside the tape cassette insertion space of the cassette holder and a second position located within the tape cassette insertion space, The reel lock of the tape cassette is released by moving the reel lock release means from the first position to the second position.

According to the present invention, with the above-described configuration, by simply inserting the tape cassette into the cassette holder, the predetermined tape winding of the cylinder can be done by wrapping the tape around a part of the cylinder and keeping it at the position where the reel and the reel stand engage. This makes it possible to bring the tape cassette and cylinder as close as possible without damaging the tape.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

1 to 3 are side views of a magnetic recording/reproducing apparatus in an embodiment of the present invention at a position where a tape cassette is inserted. In FIG. 1, 1 is a tape cassette, 2 is a cassette holder, 3 is a lid lock release member, 4 is a lid release member, 8 is a cylinder, 9 is a cylinder mounting screw,
16 is a reel lock release member.

Cylinder 8 is attached to cassette holder 2 with cylinder mounting screw 9.
is fixed. The cassette holder 2 is at a position where the tape cassette 1 can be inserted, and the tape cassette 1 is inserted in the direction of arrow B at this position. The tape cassette 1 moves toward the back along the cassette guide plate 5 provided on the cassette holder 2, but in the process, the cassette lid 1b is opened, the reel IC is unlocked, and the tape 1e is wound around the cylinder 8. be exposed. These operations will be explained below.

FIG. 6 is a side view of essential parts of the lid opening mechanism.

When the tape cassette 1 is inserted, the lid lock 1a comes into contact with the protrusion 3a, and the lid lock 1a is released. When the tape cassette 1 is further inserted, the lid lock release member 3 is pressed against the spring force of the tension spring 7 stretched between the cassette holder 2 and the lid lock release member 3 in the direction opposite to the arrow B direction. The lock release member 3 is a cassette guide plate 5
It comes to move together with the tape cassette 1 while sliding.

As the lid lock release member 3 moves, the pin 3a protruding from the lid lock release member 3 moves within the elongated hole 4a of the lid release member 4. The lid opening member 4 is rotatably fixed to the reel lock release member 16 by a rotation shaft 16a, and a lid opening bin 4c is protruded from the other end so as to be in contact with the end surface of the cassette lid 1b. 3
b moves in the elongated hole 4a to rotate about the rotation shaft 4b and push the cassette lid 1b up in the direction of arrow C. This rotation moves the lid opening member 4 from the position indicated by the solid line to the position indicated by the two-dot chain line, thereby opening the cassette lid 1b. FIG. 2 is a side view of the tape cassette loading device at this time.

Next, unlocking of the reel 1c will be explained.

Figure 7 is a side view of the main part of the reel lock release mechanism, Figure 8 is a side view of the main part of the reel locking mechanism of the tape cassette in a state where the reel is locked, and Figure 9 is a side view of the main part of the reel lock mechanism of the tape cassette. Fig. 10 is a plan view of the main part with the reel locked, Fig. 10 is a side view of the main part with the reel locking mechanism of the tape cassette unlocked, and Fig. 11 is a plan view of the main part with the reel locking mechanism of the tape cassette unlocked. FIG. 3 is a plan view of main parts in a released state. When the tape cassette 1 is further inserted from the position shown in FIG. 2, the reel lock release member 1
Reference numeral 6 denotes a tension spring 7 stretched between the cassette holder 2 so as to bias the reel lock release member 16 in the direction of arrow B when the protruding piece teb and the front lower part 1f of the tape cassette 1 come into contact with each other. The pin 16a is protruded to resist the spring force of the pin 16a.

The guide grooves 2b are respectively engaged with the pins 16c.

It moves together with the tape cassette 1 while being guided by the guide groove 2d. Since the guide groove 2b consists of a part parallel to the direction of arrow B and a part inclined to the direction of arrow B, the reel lock release member 16 initially moves parallel in the direction of arrow B and the pin lea
Performs a combined motion with rotation around . As a result, the reel lock release pin 16d protruding from the reel lock release member 16 is gradually inserted into the reel lock release hole 14, and the reel lock 1g is stretched between the tape cassette 1 and the reel lock 1g. It gradually moves in the direction of arrow C against the spring force of the tabular spring 1h. and,
The position where the reel lock release member 16 is indicated by the two-dot chain line,
In other words, when the pin 16c moves to a position where it only moves parallel to the arrow direction, the pin 16d protruding from the reel lock release member 18 is completely inserted into the reel lock release hole 14 of the tape cassette 1. Then, the reel lock 1g of the tape cassette 1 is completely released.

Note that while the reel lock release member 16 moves, the positional relationship between the lid release member 4 and the cassette lid 1b changes. This is because the movement of the reel lock release member 16 to which the lid opening member 4 is pivotally fixed by the rotation shaft 4b includes a rotational component about the pin lea. This results in
The position of the rotation shaft 4b of the lid opening member 4 in FIG. 6 changes, and the cassette lid 1b is slightly closed from the open state, but the angle is small and the open state of the cassette lid 1b is maintained. dripping

Next, winding of the tape 1e around the cylinder 8 will be explained. When the reel lock release member 16 moves to the position indicated by the two-dot chain line in FIG. 7, the reel IC is unlocked and the tape 1e and the cylinder 8 begin to come into contact with each other. When the tape cassette is further inserted from that position, the tape 1e is pulled out due to the contact between the tape 1e and the cylinder 8, and the tape 1e is wound around the cylinder 8.

At this time, the door lock release member 16 moves only in the direction of arrow B, so that the tape 1e is wound without any excessive force being applied to it. This winding is continued until the pin lea comes into contact with the end of the guide groove 2b and insertion of the tape cassette 1 is completed, and at the position where the insertion of the tape cassette 1 is completed, the magnetic recording/reproducing apparatus is in the state shown in FIG. Also, at the same time as the insertion is completed, a cassette lock mechanism (not shown) locks the tape cassette 1 into the cassette holder 2.
locked against.

4 and 5 are a side view and a plan view, respectively, of a tape cassette mounting device in an embodiment of the present invention at a position where the reel and reel stand engage.

After inserting the tape cassette 1 into the cassette holder 2,
By pressing the cassette holder 2, the tape cassette 1
The cassette holder 2 including the cassette holder 2 rotates about a rotation axis 2a. The rotation of the cassette holder 2 continues until the reel IC and the reel stand 13 engage, and at the position where the reel 1c and the reel stand 13 engage, the cassette holder lock mechanism (
(not shown) locks the cassette holder 2 to the chassis 10. At this time, the post 11 and the pinch roller 12 are inserted into the bottom opening 1d of the tape cassette 1, and the tape cassette 1 is mounted. After this, the tape 1e is further pulled out and completely wrapped around the cylinder 8.

Effects of the Invention With the above-described configuration, the present invention can wrap a predetermined tape around a cylinder by simply inserting a tape cassette into a cassette holder, and then winding the tape around a part of the cylinder and controlling the state of the relationship between the reel and the reel stand. By keeping it in the same position,
The tape cassette and cylinder can be brought as close as possible at the position where the reel and reel stand engage. Since the width of the tape cassette of the VCR in the front-rear direction can be shortened by a short distance, the VCR can be made smaller.

A tape cassette loading device (hereinafter referred to as a shrink system) is a conventional VCR downsizing technique and is constructed of two chassis: a chassis for loading a tape cassette, and a chassis for mounting a cylinder. )
When comparing the tape cassette mounting device of the present invention with the shrink method, after the tape cassette is mounted on the cassette holder, the chassis on which the tape cassette is mounted slides against the chassis on which the cylinder is mounted. The tape is wound around the cylinder, but the tape cassette mounting device of the present invention is similar to the shrink method when the tape is wrapped around the chassis 2.
Since it is not necessary to use a configuration of two chassis and can be configured with one chassis, it is possible to reduce the thickness of one chassis.

Furthermore, since it is not necessary to wrap the tape around a part of the cylinder by moving the chassis on which the tape cassette is mounted, the mechanism can be simplified.

[Brief explanation of drawings]

1 to 3 are side views of a tape cassette loading device according to an embodiment of the present invention at a position where a tape cassette is inserted, and FIGS. 4 and 5 are respectively views of a reel of a tape cassette loading device according to the same embodiment. 6 is a side view of a main part of the lid opening mechanism in the same embodiment, and FIG. 7 is a side view of a main part of a reel lock release mechanism in the same embodiment. Figure 8. FIG. 8 is a side view and a plan view of a main part of the tape cassette glue locking mechanism in a state where the reel is locked in the same embodiment, respectively, and FIG. 10 is a main part plan view of the same embodiment. Fig. 11 is a side view and a plan view of the main part of the tape cassette in the same embodiment when the reel locking mechanism is unlocked, and Fig. 12 is a conventional magnetic recording/reproducing device in which the tape cassette is inserted. Side view in position, 13th
14 are a side view and a plan view, respectively, of a conventional tape cassette loading device at a position where a reel and a reel stand engage with each other. DESCRIPTION OF SYMBOLS 1... Tape cassette, 2... Cassette holder, 3... Lid lock release member, 4... Lid release member, 8... Cylinder, 10... Chassis, 11... Post, 12 ... Pinch roller, 13... Reel stand, 16... Reel lock release member. Name of agent Patent attorney Densuke Awano Figure 18 Figure 3 Figure r Figure 4 Figure Figure 10 Figure Figure 11 Figure 10 lz

Claims (1)

[Scope of Claims] A cassette holder for holding and guiding a tape cassette; a reel lock release means provided on the cassette holder for releasing the reel lock of the tape cassette; and a reel lock release means for releasing the reel lock of the tape cassette of the cassette holder. A tape cassette loading device comprising a moving means for moving the tape cassette from a first position outside the insertion space to a second position inside the tape cassette insertion space.