JPS6134508Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an articulation mechanism for intermittently rotating a rotating plate. It is an object of the present invention to provide a data display device for a strobe that is simple in structure and can be implemented at low cost, capable of adjusting only the plate and simultaneously adjusting both the upper and lower rotary plates.

The present invention will be described below with reference to the drawings in the case where it is applied to a guide number dial of a strobe device.

Figure 1 is a partially exploded perspective view of the present invention in this case, Figure 2 is a cross-sectional view of the assembled state of Figure 1, and Figure 3 is a partially exploded perspective view of the present invention in this case.
The figure is a plan view of FIG. 1.

In the drawing, 1 is the main body of the strobe device, 2 is the upper plate of the main body 1, 3 is the cylindrical bearing part of the upper plate 2, and 4 is a disc fitted on the outer periphery of this bearing part 3, and the upper surface is marked with a distance in the circumferential direction. A number indicating the guide number and a number indicating the guide number are attached. a is a numerical part indicating the distance, and b is a numerical part indicating the guide number. Reference numeral 5 denotes an arc-shaped through hole formed in the disc 4. Reference numeral 7 denotes a lower rotary disk which is supported by a pivot shaft 8 provided at the center of the lower surface, which is fitted into the inner periphery of the bearing portion 3;
A distance guide number window 9 is provided in a portion corresponding to the distance guide number window 9. Reference numeral 10 denotes a cylindrical bearing section provided at the center of the upper surface of the lower rotating disk 7, and 6 indicates an upper rotating disk that is fitted into the outer periphery of the bearing section 10 and pivotally supported. 1
Reference numeral 1 denotes a vertical cylindrical portion that penetrates the lower rotary disk 7 and reaches the vicinity of the upper plate 2 from the lower surface via an arcuate through hole 5, and is provided on the lower rotary disk 7. 12 is a pressure spring inserted into this cylindrical portion 11;
4 are respectively fitted to both ends of the cylindrical portion 11 and are regulated upwardly and downwardly by this pressing spring 12.
The lower plate articulating ball 15 is a fan-shaped plate having a plurality of upper plate articulating engagement holes 16 that shallowly engage the upper plate articulating balls 13 at each film sensitivity display position, and is a sector-shaped plate having a plurality of upper plate articulating engagement holes 16 on the lower surface of the upper rotating disk 6. is glued to.
The engagement hole 16 may be formed directly on the lower surface of the disc 6. Reference numeral 17 denotes a fan-shaped plate having a plurality of lower plate articulation engagement holes 18 with which the lower plate articulation balls 14 are deeply engaged at each guide number display position, and each of the lower plate articulation engagement holes 18 has an arc-shaped penetrating hole. It is bonded to the upper surface of the upper plate 2 so as to face each upper plate articulating engagement hole 16 through the hole 5 . The engagement hole 18 is located in the upper plate 2
It may be formed directly on the top surface of the . 19 is a distance display window formed on the upper rotating disk 6, 20 is a guide number display window, and 21 is a film corresponding to the number c indicating the film sensitivity, which is also formed on the disk 6 and attached to the lower rotating disk 7. Sensitivity display window, 22 is a finger rest glued to the top surface of the disc 6, 23 is a disc 7
A knob 24 fits into the bearing portion 10 of the disc 7 to rotate the disc 7;
7, 4, the hole in the upper plate 2, and the bearing portion to pivotally connect these screws.

In the above configuration, when the upper rotary disk 6 is operated clockwise or counterclockwise by placing a finger on the finger rest 22, the disk 6 rotates in the same direction around the bearing 10 and at the same time, the upper rotating disk 6 is rotated in the same direction. As the ball 13 bounces off the spring 12, the engagement hole 1 for articulating the upper plate is sequentially moved.
6, the disc 6 articulates. in this case,
Lower plate articulation ball 14 and lower plate articulation engagement hole 1
8 is deeply engaged and the upper rotating disk 6 is pivotally supported by the lower rotating disk 7, so that the lower rotating disk 7 does not rotate. In other words, only the upper rotary disk 6 can be articulately rotated.
Then, look directly at the number c on the lower rotary disk 7 through the display window 21, and when the desired film sensitivity ASA or DIN number appears on the display window 21, perform the articulated rotation operation of the upper rotary disk 6. Stop. For example, as shown in FIG. 3, the film sensitivity is adjusted to ASA100 or DIN21 of the film used.

Next, when the knob 23 is rotated clockwise or counterclockwise, the lower rotary disk 7 rotates via the bearing 10 into which the knob 23 is fitted, and is pivoted to the lower rotary disk 7 to move upward. The rotating disk 6 is also connected to the upper plate articulating ball 13 and the engagement hole 1 by the pressing spring 12.
6 is maintained in engagement and rotates together with the disc 7, and at the same time, the lower plate articulating ball 14 springs against the pressing spring 12 and sequentially engages and disengages from the lower plate articulating engagement hole 18, thereby causing the disc to rotate. 7 is moderating. That is, the upper and lower rotary disks 6 and 7 can be rotated in an articulated manner.
Then, look directly at the number in part b on the disc 4 through the display window 20, and select the desired guide number (manual) M.
When the number appears on the display window 20, turn knob 2.
Stop operation 3. For example, match the guide number M48 as shown in the third diagram. Next, the distance to the subject is determined from the relationship between the distance m (meter) or f (feet) displayed on the display window 19 and the aperture value F marked on the rotating disk 6 above. For example, if the distance to the subject is 3 m, the aperture value is set to F16, and if it is 6 m, the aperture value is set to F=8.

As described above, according to the present invention, in a device in which two rotary plates are pivoted concentrically up and down, it is possible to articulate only the upper rotary plate, and to articulate two joints that simultaneously articulate both the upper and lower rotary plates. The dynamic function is achieved by a pressure spring inserted into the cylindrical part and inside, a ball fitted into each end of the cylindrical part and regulated upward and downward by the pressure spring, and a plurality of balls that engage each ball shallowly. This was achieved with a common articulation means consisting of an engagement hole and multiple engagement holes that engage deeply.
There is no need to provide a separate articulation function, the structure is simple, it can be implemented at low cost, the installation space can be reduced, the overall size can be made smaller, the articulation is easy and reliable, and the operation feeling is good. There is.

[Brief explanation of the drawing]

1 is a partially exploded perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view of the assembled state shown in FIG. 1, and FIG. 3 is a plan view of FIG. 1. 2... Substrate (upper plate of main body 1), 6... Upper rotating plate, 7... Lower rotating plate, 11... Vertical cylinder that passes through lower rotating plate 7 and reaches near substrate 1 from the lower surface. Part, 12... Pressing spring, 13... Ball for upper plate articulation, 14... Ball for lower plate articulation, 16...
...Engagement hole for upper plate articulation, 18...Engagement hole for lower plate articulation, a...Distance scale number part, b...Guide number scale number part, c...Film sensitivity scale number part, 9...Distance Guide number window, 19...
Distance display window, 20... film sensitivity display window.

Claims (1)

[Scope of utility model registration request] Two rotating plates are vertically and concentrically supported on a board displaying a distance scale and a guide number scale.The lower rotating disk is equipped with a distance guide number window and a film sensitivity scale, and the upper rotating disk is equipped with a distance guide number window and a film sensitivity scale. is equipped with an aperture value scale, a distance display window, and a film sensitivity display window,
The lower rotating plate is provided with a vertical cylindrical part that passes through the lower rotating plate and extends from the bottom surface to the vicinity of the board, and is regulated upward and downward by pressure springs inserted inside each end of this cylindrical part. In addition, a plurality of upper plate articulation balls are engaged with the lower plate articulation balls, and the upper plate articulation balls are shallowly engaged with the lower surface side of the upper rotary plate and the upper surface side of the board, respectively, facing each other in the circumferential direction. A data display device for a strobe, characterized in that a plurality of engagement holes for lower plate adjustment are provided in which the engagement hole and the lower plate adjustment ball are deeply engaged.