JPH0325856B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rotation adjustment jig for adjusting the relative position between two support stands.

Configuration of Conventional Example and its Problems First, an example of application of a rotation adjustment jig to a post device in a magnetic recording/reproducing device (hereinafter referred to as a VTR) will be described. In FIG. 1, a magnetic tape 1 includes a pair of rotating roll posts 2 that regulate the vertical direction of the magnetic tape 1 by regulating stages 2A and 2B, and a pair of inclined posts 3 disposed between these rotating roller posts 2. The guide drum 4 is regulated and guided by the guide drum 4, and runs along the lead 4A, which is the regulating stage of the guide drum 4, which has a rotary head therein, thereby recording and reproducing video signals. Therefore, in order to obtain high image quality and compatibility with other VTRs, the magnetic tape 1 must accurately run in the correct position. In particular, rotating roller post 2
The positional accuracy of the tilted post 3 relative to the position is important.
If the tilted post 3 is out of position, the magnetic tape 1 will be pressed against one side of the regulating stages 2A and 2B of the rotating roller post 2, and as a result, a large internal stress will be generated on the end surface of the magnetic tape 1, causing the magnetic tape to Tape 1 will be damaged. Further, the magnetic tape 1 is lifted off the lead 4A, and the head inside the guide drum 4 cannot accurately trace the magnetic tape 1.
If the position of the inclined post 3 is out of order in this way,
Since the magnetic tape 1 may be damaged or accurate tracing may not be possible, noise may appear on the screen and the image quality may be significantly degraded. From the foregoing, it can be recognized how important the position adjustment of the tilt post 3 is.

However, with the jigs used in conventional VTR post devices, there has been a problem in that it is difficult to perform highly accurate position adjustment. A conventional example will be explained below based on FIGS. 2 and 3.

In FIGS. 2 and 3, the adjustment table 5 that supports the inclined post 3 at a predetermined angle of inclination is attached to the mounting table 6.
The roller post 2 is rotatably fitted loosely into the regulating step 2B of the rotating roller post 2 which is to be erected on the roller post 2. Further, the rotating roller post 2 rotatably supports the rotating roller 7 between the regulating step portions 2A and 2B. The adjustment table 5 and the mounting table 6 are provided with a cutout recess 9 and a recess 10 that engage with the flat jig 8, respectively. Also, adjustment table 5
is provided with a long hole 12 through which the fixing screw 11 is inserted, and the mounting base 6 is further provided with a female screw portion 13 that pairs with the fixing screw 11.

In the conventional configuration described above, the jig 8 is connected to the cutout recess 9
and the recessed part 10, respectively, and the recessed part 10
By moving the jig 8 within the range of play between the thickness of the jig 8 and the width of the recess 10, the regulating step 2B of the rotating roller post 2 is guided between the adjustment table 5 and the mounting table 6. It can be rotated as After rotating to a predetermined position, the adjustment table 5 is fixed to the mounting table 6 by tightening the fixing screw 11.

In this way, when adjusting the position of the post device of a VTR using the conventional jig 8, the engagement of the recess 10 with the jig 8 requires play as described above, so the jig 8 is The disadvantage was that it could not be moved smoothly and it was difficult to adjust the position. Furthermore, due to the structure of the jig, it is necessary to make the mounting base 6 larger than the adjustment base 5 and provide a recess 10 in that space, which also poses a problem in terms of miniaturization of the equipment.

OBJECTS OF THE INVENTION The present invention provides a rotation adjustment jig that eliminates the conventional drawbacks, allows relative position adjustment to be performed quickly and accurately, and allows the mounting base to be made smaller.

Structure of the Invention In order to achieve the above object, the rotation adjustment jig of the present invention has a first support base and an engaged portion that engages with the jig, and the rotation adjustment jig includes a first support base and an engaged portion that engages with the jig. A rotation adjustment jig for use in a relative position adjustment device comprising a second support base whose relative position with respect to the first support base can be adjusted, and a fixing screw for fixing the second support base to the first support base. a columnar part having a through hole through which a driver for tightening the fixing screw is inserted and guiding the rotation of the driver; It is configured to include a rotation guide portion that fits into the rotation guide portion, and an engaging portion that engages with the engaged portion.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. An adjustment stand (second support stand) 5 that supports the inclined post 3 at a predetermined angle of inclination is rotated around the regulating step 2B of the rotating roller post 2 that is installed on the mounting stand (first support stand) 6. It is fitted loosely so that it can move freely. The rotating roller post 2 has regulating step portions 2A and 2B.
A rotary roller 7 is rotatably supported between them. The adjustment table 5 has a cutout recess (engaged part) 9 that engages with a jig, and is further provided with a long hole 12 through which a fixing screw 11 is inserted. Further, the mounting base 6 is provided with a female screw portion 13 that pairs with the fixing screw 11. The rotation adjustment jig 14 includes a handle portion 15 for an operator to support and rotate the jig, a columnar portion 16 connected from the handle portion 15, and a columnar portion 16.
a rotation guide portion 17 that is located at the tip of the fixing screw 11 and rotatably loosely fits into the fixing screw 11;
The L-shaped part (engaging part) 18 is connected to the notch recess 9 and engages with the notched recess 9. Furthermore, a driver 19 is provided inside the handle part 15 to the columnar part 16. A through-hole portion 20 is formed through which the screwdriver 19 is inserted and which guides the rotation of the driver 19. Note that the rotation guide portion 17 and the through hole portion 20 are arranged coaxially.

In the above configuration, the rotation guide portion 17 provided at the tip of the rotation adjustment jig 14 is loosely fitted to the outer peripheral portion of the fixing screw 11 and engaged with the notch recess 9 of the L-shaped portion 18 . Next, insert the driver 19 into the through hole portion 2.
0, and its tip is fitted with the fixing screw 11. By rotating the handle portion 15 in this state, the adjustment table 5 can be rotated around the regulating step portion 2B via the L-shaped portion 18 and the notch recess 9. After setting the inclined post 3 and rotating roller post 2 so that they form the desired relative positional relationship,
Tighten the fixing screw 11 with a screwdriver 19 to fix the adjustment base 5 to the mounting base 6.

In the above-mentioned embodiment, a case where the present invention is applied to a VTR post device has been described, but it goes without saying that similar effects can be obtained when used in other relative position rotation adjustment devices.

Effects of the Invention As described above, if the rotation adjustment jig according to the present invention is used, the looseness of the guide portion of the jig can be eliminated because the fixing screw is used to guide the rotation of the jig, and the jig structure can also be improved. Smooth and highly accurate rotational adjustment can be performed very easily and without increasing the number of parts for guiding the jig on the side of the member to be adjusted. Moreover, there is no need for the first support base (mounting base) to have a part that engages with the jig, and the first support base can be made smaller than before, making it possible to downsize the device. In addition, since the rotation guide part that fits the fixing screw is provided coaxially with the through hole part, when adjusting the rotation or fixing the second support base, the driver and jig can be set alternately each time. This has the tremendous effect of allowing work to proceed almost simultaneously without having to make any repairs. Furthermore, the through hole also serves as a rotational guide for the screwdriver, which has the advantage of allowing quick screw tightening work.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram for explaining the importance of positional accuracy of the tilted post, Figure 2a is a sectional view of a VTR post device and a conventional jig, Figure 2b is a perspective view of the same jig, and Figure 2b is a perspective view of the same jig. Figure 3 is a perspective view of the VTR post device.
FIG. 4 is a sectional view of an example of a VTR post device and a jig according to the present invention, and FIG. 5 is a perspective view of the VTR post device. 2...Rotating roller post, 2A, 2B...Regulating stepped portion, 3...Inclination post, 5...Adjusting table, (second
(support stand), 6... mounting stand (first support stand), 7...
... Rotating roller, 9 ... Notch recess (engaged part), 1
DESCRIPTION OF SYMBOLS 1... Fixed screw, 12... Elongated hole, 13... Female screw part, 14... Rotation adjustment jig, 15... Handle part, 16... Column part, 17... Rotation guide part, 18
...L-shaped part (engaging part), 19...driver,
20...Through hole section.

Claims (1)

[Scope of Claims] 1. A first support base, and a second support base having an engaged part that engages with a jig and whose relative position with respect to the first support base can be adjusted via the engaged part. A rotation adjustment jig used for a relative position adjustment device comprising a support base and a fixing screw for fixing the second support base to the first support base, the driver for tightening the fixing screw. a columnar part having a through hole through which the driver is inserted and guides the rotation of the driver; a rotation guide part located at the tip of the columnar part and rotatably fitted with the fixing screw; and the engaged part. A rotation adjustment jig comprising: an engaging portion that engages with the rotation adjustment jig. 2. The rotation adjustment jig according to claim 1, wherein the rotation guide portion is disposed coaxially with the through hole portion.