JPH0533335U - Tape guide device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a tape guide device for reliably guiding a tape-shaped recording medium between a cassette and a cylinder in an information recording / reproducing device. [Structure] An abutment lever 10 having a pin 11 that slides on a cam surface 12 formed on a link 5 that supports a cassette holder 6 so as to be able to move up and down rotates as the cassette holder 6 descends, and a tape guide lever 13 moves. The attached tape guide portion 16 is located above the cylinder 2 and is retracted to a position where it does not interfere with other parts when the cassette holder 6 descends to the recording / reproducing position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tape guide device for guiding a tape between a cylinder and a cassette so that the tape does not run on the cylinder when the cassette is mounted on a video tape recorder (VTR) or the like.

[0002]

[Prior Art]

 A known tape guide device is disclosed in Japanese Patent Application Laid-Open No. 2-64956 (G11B 15/665).

This is because the tape shutter located between the cylinder and the cassette holder rotates in conjunction with the lowering of the cassette holder, and when the cassette mounting is completed, the tape shutter is placed at a position that does not affect recording and reproduction. A link mechanism is provided so that it can be retracted.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, the tape guide device has many parts and the structure is complicated, which causes a deterioration in productivity.

[0005]

[Means for Solving the Problems]

 The present invention relates to a tape guide device of an information recording / reproducing apparatus for performing recording / reproducing by winding a tape-shaped recording medium around a cylinder, a link for supporting a cassette holder so that the cassette holder can move up and down, a cam surface provided on the link. A tape guide lever that is rotatably attached to the cassette holder, a tape guide portion that is provided at the end of the tape guide lever, and a tape guide lever that is rotatably provided on the cassette holder and contacts the tape guide lever. The contact lever and the pin that is planted on the contact lever and slides on the cam surface.The pin that is planted on the contact lever as the cassette holder descends slides on the cam surface formed on the link. By moving the contact lever, the contact lever is rotated to rotate the tape guide lever so that the tape guide portion is always located above the cylinder. When the set holder is lowered to a recording and reproducing position is configured to retract to a position never tape guide portion from interfering with other components.

[0006]

[Action]

 According to the present invention, it is possible to reliably guide the tape with a simple structure.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention in an 8 mm VTR in which the reel chassis slides with respect to the main chassis. In the figure, reference numeral 1 is a main chassis, on which a cylinder 2 is placed, and a reel chassis 3 is slidably attached to the main chassis 1 by a slide means (not shown). A cassette holder 6 is attached to the reel chassis 3 so as to be vertically movable by links 4 and 5 attached to both side surfaces of the reel chassis 3. One end of the link 4 is slidably engaged with the long hole 7 of the reel chassis 3, and the other end is rotatably supported by the cassette holder 6. One end of the link 5 is rotatably supported by the reel chassis 3, and the other end is slidably engaged with the long hole 8 of the cassette holder 6. The link 4 and the link 5 are rotatably connected to the shaft 9. A contact lever 10 is rotatably supported at one end on the side surface of the cassette holder 6. A pin 11 is erected on the contact lever 10 and is in contact with a cam surface 12 formed on the link 5, so that the contact lever 10 rotates in association with the elevation of the cassette holder 6. It has become. The other end of the contact lever 10 is bent in an L shape and abuts on the tape guide lever 13, and the tape guide lever 13 is rotated in conjunction with the elevation of the cassette holder 6. One end of the tape guide lever 13 is rotatably supported by the cassette holder 6, and is urged counterclockwise by a spring 15 that engages with a pin 14 that is set up in the tape guide lever 13 so that the tape guide lever 13 comes into contact with the tape guide lever 13. The position is regulated by the lever 10, and a tape guide portion 16 is attached to the other end to prevent the tape from riding on the cylinder 2 when the cassette holder 6 descends. Alternatively, it is made of a material such as polyethylene terephthalate, which does not cause damage even if it comes into contact with the cylinder 2 and does not easily generate burrs, has weak elasticity, and has a low specific gravity.

Next, the operation of this embodiment will be described. First, as shown in FIG. 2, the cassette holder 6 is at the cassette mounting position and the cassette 17 is mounted. Further, for convenience, the lid of the cassette 17 is opened and the tape 18 is exposed. At this time, the tape 18 is higher than the cylinder 2, and the tape 18 descends together with the cassette 17 as the cassette holder 6 descends. Even if the tape 18 is loose, the tape guide lever 13 guides the tape. The part 16 prevents the tape 18 from riding on the upper part of the cylinder 2, and the tape 18 is guided between the cassette 17 and the cylinder 2. While the cassette holder 6 is descending, the pin 11 provided on the contact lever 10 slides on the cam surface 12 of the link 5 so that the tape guide portion 16 is always located above the cylinder 2. It has become. Further, when the cassette holder 6 descends and descends to the recording / reproducing position, the tape guide portion 16 retreats above the cylinder 2 as shown in FIG. The timing at which the tape guide portion 16 retracts is when the lower end of the tape 18 is lowered by about 1 mm from the upper surface of the cylinder 2, and if it is earlier than that, the tape 18 may ride on the upper part of the cylinder 2, and if it is later than that, The interior 16 may interfere with a guide or the like for winding the tape 18 around the cylinder 2.

With the above structure, the tape can be reliably inserted between the cassette and the cylinder with a simple structure.

[0010]

[Effect of the device]

 According to the present invention, in an information recording / reproducing apparatus having a narrow space between the cassette and the cylinder, the tape guide portion is always positioned above the cylinder by rotating the tape guide lever in conjunction with the elevation of the cassette holder. The tape can be reliably guided between the cassette and the cylinder without riding on the top of the cylinder.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view of the cassette holder in the tape mounting position according to the embodiment of the present invention.

FIG. 3 is a front view when the cassette holder is at the recording / reproducing position in the embodiment of the present invention.

[Explanation of symbols]

 2 cylinder 5 link 6 cassette holder 10 contact lever 11 pin 12 cam surface 13 tape guide lever 16 tape guide portion 18 tape (tape-shaped recording medium)

Claims (1)

[Scope of utility model registration request] 1. In a tape guide device of an information recording / reproducing apparatus for recording / reproducing by winding a tape-shaped recording medium around a cylinder, a link for supporting a cassette holder to move up and down, and a cam surface provided on the link. A tape guide lever rotatably attached to the cassette holder, a tape guide portion provided at an end of the tape guide lever, and a tape guide lever rotatably provided on the cassette holder and abutting the tape guide lever. The link is formed with a contact lever and a pin that is erected on the contact lever and slides on the cam surface. The pin is erected on the contact lever as the cassette holder descends. The contact lever is rotated by sliding on the cam surface, and the tape guide lever is rotated by rotation of the contact lever. Therefore, the tape guide portion is always located above the cylinder, and when the cassette holder is lowered to the recording / reproducing position, the tape guide portion is retracted to a position where it does not interfere with other components. Tape guide device.