JPH0227413Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a tape guide device for a video tape recorder, and is intended to reduce the size of the device.

[Technical background of the invention]

In a helical scan video tape recorder (hereinafter referred to as VTR), as shown in FIG. There is a method in which it is drawn and attached in the left and right circumferential directions. Leading poles 25, 29 and auxiliary poles 26, 28 pull out the tape 10 from the cassette 11.
The leading pole 25 and the auxiliary pole 26 are provided upright on the first slide support 35, and the leading pole 29 and the auxiliary pole 28 are provided on the second slide support 35.
It is set up at 6. Slide support stand 3
5 and 36 are guided by slide grooves 37 and 38, respectively, and can move in the directions shown by the arrows (A←→B) and (C←→D). In the state shown in the figure, the tape 10 has been pulled out from the cassette 11 and loading has been completed. The tape running path from the supply reel stand 12 to the take-up reel stand 13 is as follows: guide post 21 → tension pole 22 → guide post 23 → erase head 24 → leading pole 25 → auxiliary pole 26 → cylinder 27 → auxiliary pole 28 → leading Pole 29 → Audio and control head 30
The path is → guide post 31 → capstan 32 and pinch roller 33 → guide post 34.
Note that 32A is a flywheel of the capstan 32.

[Problems with background technology]

According to the above-mentioned type of video tape recorder, if you try to make it smaller, its width l ₁
There are some major obstacles to reducing the size of the
That is, for example, when the slide support base 36 loads the slide groove 38 in the direction of the illustrated arrow (C←→D),
When moving for unloading, cylinder 27 and audio and control head 30
It is necessary to set the interval l ₂ sufficiently large.
The slide support base 36 is provided with an auxiliary pole 28 in order to match the inclination in the width direction of the tape with the inclination of the axial center of the cylinder 27, and a guide pole 29 is provided in order to match the inclination of the tape with the stored state of the cassette 11. It is being Therefore, the distance l ₂ needs to be set larger than the distance between the auxiliary pole 28 and the guide post 29. In this way, the interval l ₂
The increase in the capstan 32 means that the position of the capstan 32 must be selected so that the tape comes into contact with the audio and control head 30, so it is set at a position separated from the cylinder 27 side in the width l ₁ direction. . Further, since the flywheel 32A is coaxially integrated with the capstan 32, this becomes an obstacle to reducing the width _l1 .

[Purpose of invention]

This invention was made in order to cope with the above-mentioned circumstances, and the purpose is to provide a tape guide device for a video tape recorder that can reduce the overall width of the device, thereby contributing to the miniaturization of the device. do.

[Summary of the idea]

This invention achieves the above object by forming a portion of the groove into a substantially S-shape, as shown in FIG. 2, for example.

[Example of idea]

Examples of this invention will be described below with reference to the drawings. Figure 2 shows the leading pole 29 and the auxiliary pole 28.
and these slide support stands 36,
As explained in FIG. 1, movement is controlled in the direction of arrow C←→D for loading and unloading. In this case, a guide pin 41 is provided to protrude from the lower part of the leading pole 29 and a guide pin 42 is provided to protrude from the lower part of the slide support base 36.
is inserted into a groove 44 formed in the chassis 43. In this case, the guide pin 41 is engaged with the engagement hole 46 of the drive slider 45 with a movement margin.

Next, the drive slider 45 and the slide support stand 36
There will be a guiding groove 44 between them, and the shape of this groove 44 is approximately S-shaped in the closest vicinity between the cylinder 27 and the audio and control head 30 described in FIG. has been transformed into.

According to the tape guide device described above, the S of the groove 44 is
When the slide support base 36 passes through the curved portion, the parallel posture of the auxiliary pole 28 and the leading pole 29 can be brought closer to the tandem posture as shown in FIG. For this reason, normal posture (parallel posture)
The width Y ₂ can be made smaller in order to approach the vertical position compared to the width Y ₁ at the time. As a result, cylinder 2
7 and the audio and control head 30, the auxiliary pole 28 and the leading pole 29 can easily pass between them. This allows the space between the cylinder 27 and the audio and control head 30 to be narrowed, thereby reducing the width _l1 of the device and contributing to miniaturization.

[Effect of idea]

As described above, according to the present invention, it is possible to provide a tape guide device for a video tape recorder that can reduce the width of the device and contribute to downsizing the entire device.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of a conventional tape guide device for a video tape recorder, FIGS. It is a figure shown for explanation. 27...Cylinder, 28...Auxiliary pole, 29
...Leading pole, 30...Audio and control head, 36...Slide support, 44...Groove.

Claims (1)

[Scope of utility model registration request] A slide support having a groove formed from the cassette installation side almost along the circumference of the cylinder containing the rotating head, and two guide pins inserted into the groove and arranged in parallel in the longitudinal direction of the groove on the lower surface. a stand, and the above-mentioned two
The book comprises two poles arranged in parallel in a direction crossing the arrangement direction of book guide pins, and a member for moving the slide support base from the cassette installation side to the loading completion position, 1. A tape guide device for a video tape recorder, characterized in that a portion thereof is formed into a substantially S-shape.