JPH06295512A - Cassette loading device - Google Patents

Abstract

PURPOSE:To previously reduce the catching caused by the friction of an opening/ closing lid with a tape due to the instantaneous opening thereof and to prevent the tape from being damaged by opening the opening/closing lid by specified amount in the middle of operation for inserting a cassete in a cassette loading device. CONSTITUTION:After the locking of the opening/closing lid 6 is released corresponding to the insertion of the cassette 1 (in a direction shown by an arrow), the reel base of a VTR device and a reel hub 3 in the cassette 1 are engaged, so that the lid 6 is gradually opened along the inclined surface 14 of a lid opening member 12. Therefore, even though one end of the tape is pulled to the inner surface 15 of the opening/closing lid by frictional force with the lid 6, the lid 6 is not instantaneously opened by the specified amount from a fully closed state manually or by a motor driving means as in the conventional manner. Therefore, the tape 2 is fully separated from the inner surface of the opening/closing lid. In such a case, the catching caused by the friction of the lid with the tape is previously reduced and the tape is prevented from being damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device which moves and holds a cassette at a predetermined position after inserting the cassette.

[0002]

2. Description of the Related Art Conventionally, a cassette mounting apparatus such as a VTR is one which moves or holds a cassette to a predetermined position manually or by a motor drive means after inserting the cassette.
The opening / closing operation of the tape protection opening / closing lid provided on a part of the cassette is performed when moving to the predetermined position.

In recent years, the tape in the cassette has been required to be thinned and protected from dust in the outside air due to demands for high-density recording of information, downsizing and weight reduction of the device, and the thinning of the tape. It is becoming more important to achieve damagelessness under low rigidity, and to ensure a more reliable shield structure against the outside air.

FIG. 3 shows the configuration of the conventional cassette as viewed from the back side. In the figure, 1 is a cassette containing a tape 2, a pair of reel hubs 3 and a pair of restriction posts 4,
Reference numeral 5 denotes a hole provided in the cassette 1 with a predetermined gap from the reel hub 3. At one end of the cassette 1, there is an outer opening / closing lid 6 for protecting the tape 2 and an inner opening / closing lid 7 paired therewith. When the cassette 1 is mounted on a device such as a VTR, after the cassette 1 is inserted, the cassette 1 is inserted through a cassette setup unit mechanism (not shown) that unlocks and holds the open / close lid lock during movement of the cassette to a predetermined position. Be done. Further, when mounted on a device such as a VTR, a reel stand (not shown) on the device side and the reel hub 3 are fitted,
The reel hub 3 and the hole 5 are substantially concentric circles.

[0005]

However, the above-mentioned conventional structure has the following problems.

When the cassette 1 is taken out from a device such as a VTR, the reel hub 3 and the hole 5 are not concentric as shown in FIG. 4. For example, when the opening / closing lid 6 is faced down, the tape 2 in the cassette 1 is removed. It will be loosened in the opening / closing lid 6. If the cassette 1 is again inserted into the cassette setup unit mechanism of the VTR device in that direction and mounted on the reel stand, tape damage will occur.

The reason for this is that the slack of the tape 2 in the cassette 1 causes the reel base of the VTR device and the reel hub 3 in the cassette 1 to engage (in the direction of the left arrow of the cassette set-up unit 7 shown in FIG. 5). (During movement), it is usually out of reach, and before the engagement is performed, the open / close lids 6 and 8 are completely closed (arrows B and C in FIG. 5) from a completely closed state to a predetermined open amount manually or by a motor drive means. Since the tape 2 is made instantly, one end of the tape 2 which is thinner and has lower rigidity than the conventional one is pulled in the opening / closing lid opening direction by the frictional force with the opening / closing lid 6, and as a result, as shown in FIG. Part 9
As it is bent, tape damage occurs.

Further, tape damage is more likely to occur when the contact portions 10, 11 of the opening / closing lids are made long in order to improve the airtightness of the opening / closing lids. Further, in the configuration in which the K-setup unit is manually operated, the higher the operation speed, the more likely damage is to occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cassette mounting device having a simple structure and a conventional cassette structure without tape damage.

[0010]

The technical means of the present invention for achieving the above-mentioned object is to provide the cassette mounting device with a structure for opening a predetermined amount of the opening / closing lid during the cassette inserting operation into the cassette mounting device. Is.

[0011]

The operation of this technical means is as follows.

That is, by opening the opening / closing lid by a predetermined amount during the cassette inserting operation into the cassette loading device, the catching due to the friction with the tape due to the instantaneous opening of the opening / closing lid is reduced in advance. You can eliminate the tape damage that used to occur.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. It should be noted that the same components as those of the related art are denoted by the same reference numerals.

FIG. 1 is a partial sectional view showing the structure of the present invention. In the figure, the lid opening member 12 is attached to the side surface of the setup unit 7 with a screw 13. After the opening / closing lid 6 is unlocked (not shown) as the cassette 1 is inserted (in the direction of the arrow), the reel base of the VTR device engages with the reel hub 3 in the cassette 1, so that the opening / closing lid 6 is a lid opening member. It is gradually opened along the inclined surface 14 of 12. Since the opening lid 6 is gradually opened, even if one end is pulled by the inner surface 15 of the opening / closing lid due to the frictional force with the opening lid 6, a predetermined amount of opening is manually performed from the completely closed state as in the conventional case. Alternatively, the tape 2 can be completely separated from the inner surface of the open lid because it is not instantaneously performed by the motor driving means or the like. FIG. 2 is a partial cross-sectional view showing that the cassette 1 is completely inserted into the cassette setup unit 7. As shown in the figure, the tape 2 can be completely separated from the inner surface 15 of the opening / closing lid by opening the opening / closing lid 6 by a predetermined amount. From this state, the cassette setup unit 7 is directed toward the reel stand of the VTR device as in the conventional case. The opening / closing lid 6 does not affect the tape 2 even if it is operated (in the direction of the arrow).

[0015]

As is apparent from the above embodiments, according to the present invention, by opening the opening / closing lid by a predetermined amount during the operation of inserting the cassette into the cassette loading device, the tape accompanying the instantaneous opening of the opening / closing lid can be provided. The tape damage that has conventionally occurred can be eliminated by reducing the catch caused by the friction.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a cassette mounting device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a cassette loading apparatus according to an embodiment of the present invention when the cassette is completely inserted

FIG. 3 is a plan view of the back surface of a conventional cassette.

FIG. 4 is a plan view of the back surface of a conventional cassette.

FIG. 5 is a partial sectional view of a conventional cassette and a cassette mounting device.

FIG. 6 is a partial sectional view of a conventional cassette opened.

[Explanation of symbols]

 1 cassette 2 tape 6 open / close lid 12 lid opening member

Claims (2)

[Claims] 1. A cassette mounting device for inserting a cassette having a tape built therein and partially having an opening / closing lid, and moving and holding the cassette at a predetermined position, wherein the opening / closing lid is moved when the cassette moves in the insertion direction. A cassette mounting device, characterized in that the member is opened by a predetermined amount and moved to a mounting completion position. 2. The cassette mounting apparatus according to claim 1, wherein the member is attached to a cassette holder unit, and the opening / closing lid is opened by a predetermined amount along an inclined surface of the member.