JPH04102799A - View finder fixing device - Google Patents

Abstract

PURPOSE:To obtain a view finder fixing device which fixes a view finder perfectly without a backlash by providing clip washers in a camera main frame side and a view finder side, and fastening them with a view finder fitting ring. CONSTITUTION:A fixed clip washer 25 having a screw in the periphery thereof is provided in a view finder fitting base 22. On the other hand, a clip washer 19 is fitted to a clip washer fitting base 17, which is fitted to a view finder main frame 1 with machine screws. The inner surface of a view finder fitting ring 18 is threaded to be screwed with the fixed clip washer 25. The clip washer 19 of the view finder and the fixed clip washer 25 of a TV camera main frame are faced to each other, and a screw of the view finder fitting ring 18 and a screw of the fixed clip washer 25 are screwed with each other. Clip washers are provided in both a camera main frame side and a view finder side to eliminate a backlash perfectly and fix the view finder stably.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fixing device for a television camera and a viewfinder.

Conventional technology Recent years Viewfinder and TV camera t St'C
The connection is cordless to prevent accidents during operation, and as shown in Figs. It has a 900-rotation structure so that viewfinder b can fit within the frame. A conventional viewfinder fixing device has a structure as shown in FIGS. 7 to 10. The components are 1: viewfinder body, 2: viewfinder fixing bracket, 3: viewfinder fixing ring, 4: viewfinder rotation axis, 5:
is the viewfinder rotating lubricating ring, 6 is the viewfinder mounting base, 7 is the viewfinder rotation set screw, 8 is the viewfinder rotation stop knob, 9 is the viewfinder (ML connection connector, 10 is the camera side connection connector, 11 is the camera side connection Connector mounting screw, 12 is rotational force adjustment ball, 13 is rotational force adjustment spring, 1
4 is a rotation force adjustment screw, and 15 is a viewfinder rotation stop knob fixing screw.

Each of these components is assembled as follows. That is, insert the camera side connection connector 10 into the hole of the viewfinder rotation shaft 4, and then tighten the camera side connection connector mounting screw 1.
Fixed at 1. The viewfinder rotational lubrication ring 5 is fitted to the viewfinder rotation shaft unit in which the camera side connection connector 10 is incorporated, and the viewfinder rotational lubricant ring 5 is inserted into the viewfinder mounting base 66.

A 90' groove is cut in the outer periphery of the shaft of the viewfinder rotation shaft 4 in the circumferential direction. 9.
0' Rotation is stopped.

Further, by tightening it even more strongly, the viewfinder rotating shaft 4 can be strongly pressed and rotation can be stopped. If the viewfinder rotation set screw 7 is not tightly tightened, the rotation force adjustment pole 12° rotation force adjustment spring 131
A certain amount of pressure is applied to the viewfinder rotating shaft 4 by the rotational force adjusting screw 14 to give weight to the rotation.

The viewfinder rotation stopper knob 8 is attached to the viewfinder rotation stopper screw 7 with a fixing screw 15. This makes it easy to strongly press down the viewfinder rotating shaft 4. On the other hand, a viewfinder fixing fitting 2 is screwed to the viewfinder main body 1. Threads are cut on the outer periphery of the viewfinder fixing bracket 2 and the inner periphery of the viewfinder fixing ring 3.
Both can be screwed together. The viewfinder main body 1 and the TV camera main body are fixed by fitting the trefoil flange of the viewfinder rotating shaft 4 and the trefoil shaped recess of the viewfinder fixing fitting 2, and then fixing the two relative to each other by 40' to 50'. Twist and rotate it, and the trefoil flange part and the trefoil-shaped convex part prevent it from coming off. Furthermore, the viewfinder fixing ring 3 is screwed onto the viewfinder fixing fitting 2 to fix the viewfinder body and the television camera body.

Problems to be Solved by the Invention In such a conventional viewfinder fixing device, the viewfinder rotation shaft 4 is only strongly held down by the viewfinder rotation set screw 7, so it may move due to external force and cannot be completely fixed. Can not.

Further, since it is not possible to completely eliminate a gap between the viewfinder rotating shaft 4 and the viewfinder fixing fitting 2, a slight backlash occurs, which hinders photographing.

The present invention solves the above problems, and aims to provide a viewfinder fixing device that is completely fixed and has no looseness.

Means for Solving the Problems In order to achieve the above object, the present invention has a fixed chrysanthemum seat provided on the camera side with a screw on the outer periphery, a chrysanthemum seat fixed on the viewfinder side, and a chrysanthemum seat fixed to the viewfinder side, and a viewfinder fixed by the chrysanthemum seat. It consists of a rotating ring with a screw on the inner circumference that prevents it from coming off from the viewfinder. By screwing the inner circumferential screw of the rotating ring and the outer circumferential screw of the fixed chrysanthemum seat, the chrysanthemum seat on the camera side and the chrysanthemum seat on the viewfinder side can be connected. It is designed to mesh with the constellation Akiku.

Function: With the above-described configuration, the chrysanthemum seat engages during fixation, so that complete fixation and installation without rattling can be achieved.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4. As shown in Fig. 2, insert the camera side connection connector 1o into the connector holding fitting 20 and tighten the nut 2.
Fix it at 4. A spring 2 is installed inside the connector holding fitting 20.
1, insert it into the viewfinder mounting base 22,
Prevent it from coming off with stopper screw 23. The viewfinder mounting base 22 has a fixed chrysanthemum seat 26 having a screw on its outer periphery.

On the other hand, as shown in Figure 1, the chrysanthemum seat mount 17 is screwed to the viewfinder main body 1. The flange part of the viewfinder mounting ring 18 is inserted between the two, and the chrysanthemum seat 19
screw to the chrysanthemum seat mounting base 17. The inner surface of the viewfinder mounting ring 18 is threaded so that it can be screwed into the fixed chrysanthemum seat 25.

In the above configuration, the connector holding fitting 2o has a circumference of 90 mm.
A groove spanning 0 is cut, and the stopper screw 23 engages with the groove. That is, the stopper screw 23 is a rotation stopper between the retainer and 90'.

To connect the viewfinder main body 1 assembled as described above and the TV camera main body, align the chrysanthemum seat 19 of the viewfinder and the fixed chrysanthemum seat 25 of the TV camera main body, and connect the screws of the viewfinder mounting ring 18. Screw the fixing chrysanthemum seat 25 together. When first screwing the screws together, connect the viewfinder side connector 9.
Since only the camera-side connection connector 10 and the camera side connection connector 10 are in contact with each other, and the fixed chrysanthemum seat portion 25 of the viewfinder mounting base and the chrysanthemum seat portion 19 do not engage, the rotation through 90 degrees is free (Figure 4). . Viewfinder mounting ring 18
By further turning and tightening the screw, the peaks and valleys of the fixing chrysanthemum seat 25 and the chrysanthemum seat 19 of the viewfinder mounting base will completely engage and be fixed (Figure 3). Since the spring 21 is inserted between the connector holding bracket 2o and the viewfinder mounting base 22, when the viewfinder mounting ring 18f is loosened, the peaks and valleys of the fixed chrysanthemum seat 25 and the chrysanthemum seat 19 of the viewfinder mounting base are always separated. move in the direction. When the ridges are moved to a position where they do not completely interlock, it can be rotated 90 degrees again. Completely fixed is 9
This can be done at any position where the peaks and valleys engage within the 0' rotation range.

As described above, according to the viewfinder fixing device of the embodiment of the present invention, by providing the chrysanthemum seats on the camera body side and the viewfinder side, it is possible to completely eliminate wobbling and fix the camera.

In this embodiment, the groove of the connector holding fitting 2o is 90'.
Since the viewfinder body 1 can only be rotated by 9o0 relative to the camera body, the rotation angle can be increased by widening the cutting angle of the groove of the connector holding fitting 2Q.

Effects of the Invention As is clear from the above embodiments, according to the present invention, by tightening the viewfinder mounting ring with a chrysanthemum seat on the camera body side and the viewfinder side, it is completely fixed and there is no wobbling. The connection is cordless, and by rotating the viewfinder, we can provide a viewfinder fixing device that reduces transportation accidents and saves space in the storage case.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the viewfinder main body of an embodiment of the present invention in an assembled state, FIG. 2 is an exploded perspective view of the camera main body in an assembled state, and FIGS. 3 and 4 are the same as those shown in FIG. , 2, and 6 are perspective views of the viewfinder body and the television camera body, FIG. 5 shows the overall view in normal use, and FIG. Figure 7 shows the entire viewfinder rotated during transportation and storage in the water-cooled case. FIG. 8 is an exploded perspective view of a conventional example in an assembled state, and FIGS. 9 and 10 are sectional views thereof. 1...Viewfinder body, 19...
・・Chrysanthemum, 25・・・・Fixed Chrysanthemum. Name of agent: Patent attorney Shigetaka Awano and 1 other person Figure Figure Figure i″″

Claims (3)

[Claims] (1) A fixed chrysanthemum seat with a screw on the outer circumference provided on the camera side, a chrysanthemum seat fixed on the viewfinder side, and a mounting ring with a screw on the inner circumference that is prevented from coming off from the viewfinder by the chrysanthemum seat. A viewfinder fixing device comprising: an inner circumferential screw of the mounting ring and an outer circumferential screw of the fixed chrysanthemum seat, and the chrysanthemum seat on the camera side and the chrysanthemum seat on the viewfinder side are engaged. . (2) The viewfinder fixing device according to claim 1, further comprising a spring provided between the fixed chrysanthemum seats and the chrysanthemum seats. (3) The viewfinder fixing device according to claim 1, wherein the fixed chrysanthemum seat is provided with a camera side connection connector, and the chrysanthemum seat is provided with a viewfinder side connection connector.