JPH026142B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette mounting device for a magnetic recording/reproducing device, and an object thereof is to provide a tape cassette mounting device having a simple structure and excellent sound insulation characteristics.

Generally, a tape cassette mounting device has a recess for holding the tape cassette in a cassette holder whose one end is pivoted on the main body of the device, and the tape cassette is manually operated with the tape cassette stored in the recess. The tape cassette is pushed into a tape cassette insertion opening provided in the main body of the device, and the tape cassette is loaded into a reel stand provided within the main body of the device. However, in the tape cassette loading device described above, the cassette lid for cooling the opening for inserting the tape cassette is integrally attached to the cassette holder, so that when the cassette holder is suddenly pushed into the opening, There has been a problem in that the cassette lid comes into contact with the periphery of the opening and generates abnormal noise. Furthermore, when the opening is closed with the cassette lid, there is a slight gap between the cassette lid and the periphery of the opening, which causes the cassette lid to chatter due to external vibrations. There have been problems in that the tape collides with the periphery of the opening and generates abnormal noise, and that noise tends to leak outside when the internal tape mechanism operates.
In particular, in devices such as video tape recorders that are equipped with a tape loading mechanism for bringing a magnetic tape housed in a tape cassette into contact with a recording/playback head that is placed apart from the magnetic tape, the tape loading Noise from the mechanism easily leaks outside.

The present invention eliminates such conventional drawbacks, and the present invention will be described below with reference to drawings of embodiments.

The drawings show one embodiment of the present invention, and in the drawings,
Reference numeral 1 designates a tape cassette, in which both ends of a magnetic tape are attached between a pair of reels rotatably mounted inside the cassette case, and the magnetic tape is wound and stored on each of the pair of reels. Reference numeral 2 denotes a substantially U-shaped holding member for holding the tape cassette 1, and a sliding shaft 22 is provided protruding from the surfaces of both side plates 2a, 2a.
An auxiliary member 23 having an inverted L-shaped cam groove 23a is attached to the surface of a. In addition, the holding member 2
Through holes 24 are provided in the main plate 2b of the tape cassette 1 so as to correspond to the respective reels of the tape cassette 1.
Reference numeral 3 designates a support member for supporting the tape cassette 1. A support shaft 4 is provided protrudingly at the tip of an arm portion 3a, and a sliding shaft 22 provided on the holding member 2 is slid on the main plate portion 3b. Guide slot 2 for
A cam groove 27 having a dogleg shape is provided. still,
Although not shown, it goes without saying that the support member 3 is provided so as to face both side plates 2a, 2a of the holding member 2, respectively. The support member 3 is attached to the support shaft 4 on the device main body 16.
It is supported so that it can rotate around the center. Therefore, the holding member 2 is linearly slidable with respect to the supporting member 3, and is configured to be freely rotatable with respect to the device main body 16 by means of the supporting member 3. Reference numeral 5 designates a drive arm, at the tip of which a drive shaft 2 passes through a cam groove 27 provided in the support member 3 and engages with a cam groove 23a provided in the holding member 2.
5, and a rotation shaft 6 at the other end. This drive arm 5 rotates together with a rotation shaft 6 provided at the other end, and moves the holding member 2 and the support member 3 according to the cam grooves 27 and 23a. Reference numeral 7 denotes a motor mounting plate provided in the device main body 16, and the motor mounting plate 7 has a drive motor 8, a worm gear 9, and transmission gears 10, 11.
and a drive gear 12 are attached. The power of the drive motor 8 is transmitted to the worm gear 9 via a transmission belt 15 installed between a motor pulley 13 attached to its main shaft and a driven pulley 14 attached to the shaft of the worm gear 9. The drive shaft 6 to which the drive gear 12 is attached is transmitted to the drive gear 12 via the first transmission gear 10 meshing with the first transmission gear 10 and the second transmission gear 11 meshing with the first transmission gear 10. The drive arm 5 is rotated by rotating the drive arm 5. 17 is a cassette lid;
A base 28 is provided protruding from both sides of the back surface. The cassette lid 17 has the base 28 fastened to the main plate 3b of the support member 3 with screws 29. The base 28 is attached so as to be able to be separated from the cassette lid 17 by a protruding shaft 30 provided on the rear surface of the cassette lid 17. is being forced to.
Reference numeral 18 denotes a light receiver attached to one side of the support member 3, and constitutes an optical detection switch with a light emitting device such as a lamp attached to the other support member (not shown). 19 is a cam piece that rotates together with the second transmission gear 11, and when a switch 20 provided near the second transmission gear 11 is turned on,
It's starting to control off. Reference numeral 21 denotes an opening provided in the device main body 16 for inserting a tape cassette, and an elastic member 3 such as rubber is attached around the periphery of the opening 21.
2 is installed.

In the tape cassette mounting device having such a structure, as shown in FIG. When the tape cassette 1 is inserted into the recess, an optical detection switch such as a light receiver 18 detects the insertion of the tape cassette 1 into the recess, and the drive motor 8 is driven to move the drive arm 5 in the direction of arrow D. be rotated.
When the drive arm 5 is rotated in the direction of arrow D,
The drive shaft 25 provided at the tip thereof moves along the arc-shaped portion in the dogleg-shaped cam groove 27 provided in the support member 3, and at this time, the drive shaft 25 moves along the inverted L-shaped portion provided in the holding member 2. In order to move the horizontal portion of the cam groove 23a, the holding member 2 is moved downward along the guide elongated hole 26 of the supporting member 3, and the tape cassette 1 held by the holding member 2 moves itself. It falls in the direction of arrow C in the figure due to the weight of . This dropping operation of the tape cassette 1 is performed by the drive arm 5.
continues until the tape cassette 1 moves to the position 5' shown by the broken line in FIG. 1 and the tape cassette 1 moves to the position 1' shown by the broken line in FIG. Since the arcuate portion is formed approximately equal to the rotation locus of the drive shaft 25 about the drive shaft 6, there is no rotation at all. The rotation of the drive arm 5 causes the drive shaft 2 at the tip of the drive arm 5 to rotate.
5 are located at respective bending positions of the cam grooves 27 and 23a. When the drive arm 5 is further rotated in the direction of arrow D in the figure, the drive shaft 25 provided at the tip of the drive arm 5 moves the cam groove 27 provided in the support member 3 and the cam groove provided in the holding member 2. 23a is held down, the supporting member 3 and the holding member 2 are rotated about the support shaft 4 in the direction of the arrow E in the figure, and the tape cassette 1 held therein is rotated into the main body of the device as shown in FIG. The reel of the tape cassette 1 is loaded into a reel stand (not shown) provided in the main body 16, and the operation is completed. When the tape cassette 1 is loaded on the reel stand in this way, the back surface of the cassette lid 17 is pressed by the spring 31 against the elastic member 32 attached to the periphery of the opening 21 of the device main body 16. , the opening 21 can be sealed. That is, the rotation stroke of the cassette lid 17 up to the periphery of the opening 21 is performed by holding the tape cassette 1 on the reel stand while being held by the holding member 2 provided on the support member 3 around the support shaft 4 of the support member 3. The rotation stroke is set slightly smaller than the rotation stroke until loading, and the spring 31 absorbs the difference in rotation stroke when the tape cassette 1 is loaded onto the reel stand, so the cassette lid The body 17 is attracted and pressed against the elastic member 32 around the opening 21 by the spring 31.

On the other hand, when removing the tape cassette 1, the drive motor 8 is reversely rotated by operating an eject button (not shown), and the drive arm 5 is rotated in the direction opposite to the direction of arrow D in the figure.
The support member 3 is rotated in the direction opposite to the arrow E shown in the figure by the drive shaft 25 at the tip. Then, the drive arm 5 rotates to the position indicated by the broken line 5' in FIG. It moves in the direction opposite to the direction of arrow C in the figure and pushes up the tape cassette 1 held there. Therefore, since the upper end of the tape cassette 1 protrudes from the holding member 3, it is easy to pull it out from the holding member 3. When the drive arm 5 moves to the position indicated by the solid line in FIG. Complete the action. Although not shown, the first transmission gear 10 provided between the worm gear 9 and the second transmission gear 11 is the same as the worm gear 9.
A large gear that meshes with the second transmission gear 11 and a small gear that meshes with the second transmission gear 11 are arranged coaxially, and a friction clutch is provided between the large and small gears, so that the rotation end position of the drive arm 5 can be adjusted. The transmission power of the drive motor 8 can be regulated against an excessive load at
A timing shift of the cam piece 19 can be effectively prevented.

In addition, in the above embodiment, the cam groove 27 of the support member 3
is formed into a substantially dogleg shape so that the rotational movement of the supporting member 3 is performed after the linear movement of the holding member 2.
In addition to this, the cam groove 27 may be configured to have a linear shape so that the linear movement of the holding member 2 and the rotational movement of the supporting member 3 are performed simultaneously. Also,
Although the holding member 2 is configured to be linearly slidable relative to the supporting member 3, the holding member 2 may be attached to the supporting member 3 so that it cannot move, and the tape is driven by a drive motor. Needless to say, the present invention can be applied not only to the installation and removal of the cassette 1 but also to those in which the tape cassette 1 is manually installed and removed.

As described above, according to the present invention, the cassette lid body is movable on the base fixed to the support member for loading and unloading the tape cassette onto and from the reel stand of the main body of the device while holding the tape cassette. The cassette lid is elastically biased by a spring to abut against the base, so that when loading the tape cassette into the reel stand, the cassette lid is attached to the opening of the device body. It can be pressed against the periphery by the elastic member. Therefore, when the cassette lid is suddenly closed, the noise generated when the cassette lid comes into contact with the periphery of the opening can be effectively absorbed and alleviated. Since it can be brought into close contact with the periphery of the opening, it is possible to effectively insulate the chattering noise of the tape cassette lid and the internal noise of the main body of the device.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing an embodiment of the tape cassette loading device of the present invention, Fig. 2 is an explanatory diagram of the operation of the device, Fig. 3 is an exploded perspective view of the device, and Fig. 4 is a main part of the device. FIG. DESCRIPTION OF SYMBOLS 1...Tape cassette, 2...Holding member, 3...Supporting member, 16...Device main body, 17...Cassette lid body, 2
DESCRIPTION OF SYMBOLS 1...Opening, 28...Base, 30...Protruding shaft, 31...Spring, 32...Elastic rubber.

Claims (1)

[Scope of Claims] 1. A support member pivoted to a device body and movably provided in an opening for inserting a tape cassette provided in the device body, and a support member provided on the support member to hold the tape cassette. A holding member for loading and unloading the reel stand provided on the device main body according to the movement of the supporting member, a base fixed to the supporting member, and a base elastically biased by a spring. A tape comprising a cassette lid in contact with the tape, and configured such that the cassette lid is elastically pressed against the periphery of the opening of the device main body when the tape cassette is loaded onto the reel stand. Cassette loading device. 2. The cassette lid is movably attached by penetrating a base fixed to a support member with a protruding shaft protruding from the back surface of the cassette lid, and is moved into contact with the base by a spring provided between the protruding shaft and the base. The tape cassette mounting device according to claim 1, characterized in that the tape cassette mounting device is configured so that the tape cassette mounting device is brought into contact with the tape cassette mounting device. 3 Compared to the movement stroke of the support member to load the tape cassette held in the holding part of the support member onto the reel stand of the device main body, the movement stroke of the cassette lid until it comes into contact with the periphery of the opening of the device main body is The tape cassette mounting device according to claim 1, characterized in that the tape cassette mounting device is set small.