JPH024316Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a camera tripod for connecting a camera to a tripod and changing the orientation of the camera in the horizontal and vertical directions. It relates to a structure for fixing rotation in .

[Technical issues]

Conventionally, this type of camera head has a structure in which a horizontal axis is rotatably fitted into a vertical axis that is directly fixed to a tripod, and a camera mounting base is rotatably held on the horizontal axis. Things are common. With the above structure, the pan head main body can be rotated in the vertical direction about the horizontal axis, and the pan head main body can be rotated in the horizontal direction together with the vertical axis about the vertical axis.

By the way, in the above-mentioned conventional camera pan head, separate fixing screws are provided to fix the horizontal and vertical rotational positions of the pan head main body, so the operation for setting the position is difficult. It had the disadvantage that it was troublesome. For example, in the past, horizontal fixation was performed using ordinary screws, and vertical fixation was performed using an operating handle that also served as a fixing screw.

In addition, a structure in which horizontal and vertical fixation is performed simultaneously using a single screw has also been proposed;
For example, since the rotary shaft is tightened and fixed using a belt-shaped fixture, it tends to slip easily and has the disadvantage that it cannot be fixed securely and firmly.

[Means for solving technical problems]

The present invention was made in order to solve the above problem, and as a means of solving the problem, it consists of a horizontal shaft rotatably held on the pan head body, and a vertical shaft rotatably fitted to the horizontal shaft. In the camera camera tripod head, the tripod head body rotates in the vertical direction and the horizontal direction about the horizontal axis and the vertical axis, respectively, a hollow horizontal axis having a radial notch at one end; a fixture that is slidably disposed within the horizontal shaft and has a gap that can be press-contacted to the vertical shaft; a press-fitting part that is positioned in press-contact inside one end of the horizontal shaft; and a fixture that extends inside the horizontal shaft and that and a fixing screw having a threaded portion that is screwed into the fixing device, the fixing device having a substantially rectangular plate shape, and the gap portion of the fixing device being wider on the tightening screw side than the vertical axis, and the vertical axis The outer circumferential surface of the press-fitting part is formed in a tapered shape that tapers toward the screw part, and as the fixing screw is tightened, the taper becomes narrower as the fixing screw is tightened. The one end of the horizontal shaft having the radial notch is pushed out and pressed against the pan head main body side by the press-fitting part, and the vertical shaft is moved in the gradually narrowing gap by sliding of the fixture. By tightening, the pan head main body can be fixed to both the horizontal axis and the vertical axis at the same time.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing a preferred embodiment.

FIG. 1 is a side view of a camera pan head according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG.
The figure is a partial vertical sectional view of FIG. 2, FIG. 4 is a cross-sectional view of the main part of FIG. 3, and FIG. 5 is a perspective view of the main part. In the figure, 1 is the camera platform body, 2 is the horizontal axis, 3 is the vertical axis, 4 is the fixing screw, 5 is the camera mounting table rotatably supported on the camera platform body 1, 6 is the operation handle, and 7 is a screw for fixing the camera mounting base 5.

The horizontal shaft 2 is rotatably fitted into the pan head main body 1 as shown in FIG. Further, the vertical shaft 3 is rotatably fitted into a hole provided on the circumference of the horizontal shaft 2, and is locked at one end with a screw 8 to prevent it from coming off from the horizontal shaft 2. The lower end 3a of this vertical shaft 3 is fixed on a tripod. With the above structure, the pan head main body 1 can change its orientation in the vertical direction around the horizontal axis 2, and can also rotate together with the horizontal axis 2 around the vertical axis 3 to change its orientation in the horizontal direction. be.

The inside of the horizontal shaft 2 is formed hollow as shown in the figure, and in the hollow part of the horizontal shaft 2 there is provided a fixture 10 for fixing the central portion 3b of the vertical shaft 3 extending through the inside of the horizontal shaft 2. is stored. This fixture 10 has a substantially rectangular plate shape and is held so as to be able to slide within the horizontal shaft 2 in its axial direction.
Further, the fixture 10 is provided with a fixing hole 10a whose width becomes narrower toward the right in the figure, and the center portion 3b of the vertical shaft 2 extends through the fixing hole 10a. The width of the fixing hole 10 is determined by the width of the center portion of the vertical shaft 2 in the sliding direction.
It is formed to have approximately the same external dimensions as b.

Further, a tightening portion 10b having a screw hole is integrally formed at one end of the fixing device 10, and the threaded portion of the fixing screw 4 is screwed into the screw hole of this tightening portion 10b. Thereby, as the fixing screw 4 is tightened and loosened, the fixture 10 slides within the horizontal shaft 2 in its axial direction. Also, an end portion 2 of the horizontal shaft 2 facing outward from the pan head main body 1
As shown in Fig. 5, a is divided into radial parts by providing a plurality of notches 11 in the axial direction, and the outer diameter of the part is expanded by applying a force to spread it from the inside. There is. A press-fitting portion 4a having a tapered surface of the fixing screw 4 is inserted into this end portion 2a.

With the above configuration, when the fixing screw 4 is loosened, the pan head main body 1 can be rotated vertically and horizontally about the horizontal axis 2 and the vertical axis 3, respectively. When attached, the fixing device 10 is pulled in the direction of the fixing screw 4, so that the fixing device 1
The horizontal shaft 2 is fixed to the vertical part 3 by tightly pressing the fixing hole 10a on the outer periphery of the central part 3b of the vertical shaft 3, and as a result, the horizontal rotation of the pan head main body 1 is fixed. At the same time, the fixing screw 4 itself is also pulled toward the fixing tool 10, so that its press-fitting portion 4a
is press-fit deeply into the end 2a of the horizontal shaft 2, the end 2
The outer diameter of a is expanded and comes into pressure contact with the pan head main body 1, and the pan head main body 1 is fixed to the horizontal shaft 2. Thereby, the pan head main body 1 is simultaneously fixed in the vertical and horizontal directions.

In fixing the vertical shaft 3 using the fixing device 10, the fixing device 10 whose width is gradually narrowed is brought into pressure contact with the outer periphery of the central portion 3b of the vertical shaft 3 at two points, so that an extremely large pressure contact force can be obtained. , it can be securely fixed without slippage. Further, it goes without saying that strong fixation can be achieved by fixing the horizontal shaft 2 by press-fitting the press-fitting portion 4a of the fixing screw 4.

[Effect of idea]

As described above, according to the present invention, one radially divided end of the horizontal shaft is pushed apart by the tapered press-fitting part of the fixing screw to press against the pan head main body, and it is screwed into the fixing screw and slides. By tightening the vertical shaft from both sides in the gradually narrowing gap of the fixing device, it is possible to achieve the effect of simultaneously and reliably fixing the movement of the pan head body in two directions, vertical and horizontal, using the fixing screw. .

Moreover, according to the present invention, the next horizontal shaft is fixed only after one vertical shaft is fixed, so that both can be securely fixed without slippage.

Furthermore, since the fixing screw is integrally formed with the pressure contact part for the horizontal shaft, the number of parts can be reduced and parts management is easy.Furthermore, since the outer peripheral surface of the pressure contact part is tapered, it is possible to push out one end of the horizontal shaft. can be achieved reliably and a strong fixing force can be obtained.

In addition, since the vertical shaft is tightened from both sides in the gradually narrowing gap of the fixture and fixed by pressure at two points, reliable fixation can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a side view of a camera pan head according to an embodiment of the present invention, Fig. 2 is a front view of the camera pan head of Fig. 1, and Fig. 3 is a partial vertical sectional view of Fig. 2; 4 is a cross-sectional view of the main part of FIG. 3, and FIG. 5 is a perspective view of the main part. 1: Pan head body, 2: Horizontal axis, 2a: End, 3:
Vertical axis, 4: Fixing screw, 4a: Press-fitting part, 10: Fixing tool, 10a: Fixing hole, 11: Notch.

Claims (1)

[Claims for Utility Model Registration] A platform having a horizontal shaft rotatably held in the pan head main body, and a vertical shaft rotatably fitted to the horizontal shaft,
In a camera tripod head in which the tripod head body rotates in the vertical and horizontal directions about the horizontal axis and the vertical axis, respectively, a hollow horizontal axis with a radial notch provided at one end, and a hollow horizontal axis within the horizontal axis. a fixture having a gap part that is slidably disposed on the vertical shaft and can be pressed into contact with the vertical shaft; a press-fitting part located in pressure contact with the inside of one end of the horizontal shaft; and a press-fitting part that extends inside the horizontal shaft and is screwed into the fixture. and a fixing screw having a threaded portion, the fixing device having a substantially rectangular plate shape, and the gap portion of the fixing device being wider on the tightening screw side than the vertical shaft and aligned with the diameter of the vertical shaft at the center position in the sliding direction. The outer circumferential surface of the press-fitting part is formed in a tapered shape that tapers toward the screw part, and as the fixing screw is tightened, the tapered press-fitting part becomes narrower as it becomes further away from the tightening screw. by pushing out one end of the horizontal shaft having the radial notch and bringing it into pressure contact with the pan head main body, and by tightening the vertical shaft in the gradually narrowing gap by sliding the fixture. A pan head for a camera, characterized in that the pan head main body can be fixed to both the horizontal axis and the vertical axis at the same time.