JP2913368B2 - Tripod fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring device for measuring time and distance, particularly in athletics, and a tripod fixing device for fixing a tripod which is used by mounting a television camera, a video camera or the like on a head. About.

[0002]

2. Description of the Related Art Conventionally, a distance measuring operation using a distance measuring device such as a light wave distance meter used in athletics is performed by first opening each leg of a foldable tripod and setting it at a measuring point. The position of the measuring device mounted and fixed on the head of the tripod is adjusted. At this time, the opening angle of each leg of the tripod is determined in advance so that the head of the tripod is horizontal, and measurement is performed so that the intervals between the legs are exactly equal, that is, each leg is opened at intervals of 120 degrees. It must be installed at a point. However, it is very complicated to open the tripod legs at exactly equal intervals and to set them at the measurement points. In addition, such a distance measurement operation must be performed every time the measurement point is changed, and the operation efficiency is poor.

In view of such a problem, there is known a tripod fixing device in which a tripod is accurately fixed to a measuring point (Japanese Utility Model Publication No. Sho 62-8487). In this tripod fixing device, three legs are held in a radial direction at intervals of 120 degrees by a fixing member having a collimation hole.

[0004]

In the above-mentioned tripod fixing device (Japanese Utility Model Publication No. Sho 62-8487), three fixing members are used.
Only the legs of the book are held via an engaging member such as a hinge, and each leg is formed of one member and is not configured to be extendable. Furthermore, only one stopper is provided at the tip of each leg, into which the tip (foot) of each leg of the tripod is inserted. Therefore, when transporting this tripod fixing device, even if each leg is folded, there is a risk that the leg may open unexpectedly, and in order to maintain the folded state, it is necessary to tie the tip of each leg with a wire or the like. . Also, it cannot handle multiple tripods of different sizes,
The tripod fixing device itself may be enlarged.

[0005] The present invention has been proposed in view of the above circumstances, and its purpose is to not only fix the tripod accurately to the measuring point, but also to make it easy to transport in a folded state and to increase the size. An object of the present invention is to provide a tripod fixing device that can handle several types of tripods of different sizes with a simple configuration and at low cost.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a tripod fixing device for fixing the tip of a tripod in a predetermined position,
It consists of three legs having recesses that engage the legs of a tripod, and a base that holds these three legs at equal intervals and in a radial direction, and all three legs rotate vertically with respect to the base. Moveable
An ability to foot, Ri Ah provided with a fixing means for fixing the foot pivoted relative to the base, securing means, three legs
And three feet at the tip of the base
Having tongue pieces that overlap each other when rotated in the vertical direction,
The three overlapping tongue pieces are fixed .

[0007]

An embodiment of the present invention will be described with reference to the drawings .
As shown in FIGS. 1 and 2, three legs 2... Extend radially at equal intervals, that is, at 120-degree intervals, on the outer periphery of a base 1 having a hexagonal shape when viewed from a plane. .
The feet 2 are provided with a holder 21 that engages with the base 1 and a slider 2 that is slidably fitted into the holder 21.
Consists of two.

On the outer peripheral surface of the base 1, three support projections 1a are formed integrally at equal intervals so as to protrude integrally. At the tip of each of the support projections 1a, three holders 21 are formed. Are attached to the base 1 via the shafts 3 so as to be foldable (rotatable) in the vertical direction. Long grooves 21a are formed on the upper surfaces of the holders 21, respectively, and sliders 22 are respectively slidably fitted in the extending directions in the long grooves 21a.

A set screw 4 is inserted into a through hole formed at each rear end of the slider 22. The lower end of the set screw 4 has a long groove 21 a of the holder 21.
A plurality of screw holes 21b formed along the extending direction
(See FIGS. 2 and 3). As a result, the sliders 22 are fixed to the holders 21. Here, the length of the feet 2, that is, the total length of the holder 21 and the slider 22 is the same for all three legs.
A set screw 4 is screwed into a screw hole 21b located on the same circumference as viewed from a plane. The length of the feet 2 can be adjusted by appropriately selecting the screw holes 21b into which the setscrew 4 is screwed, so that a plurality of tripods having different sizes can be accommodated.

At the distal end of the sliders 22, there are provided cylindrical holding cups 5 having upper end openings. This 3
The two holding cups 5 are located on the same circumference when viewed from a plane. As shown in FIG. 3, the holding cups 5 are provided with concave portions 5a having an inverted conical shape. As shown in FIG. 1, the three legs 91 of the tripod 90 are provided in the concave portions 5a. The tripod 90 is fixed by inserting pins 92... Provided at each lower end of the tripod 90. In FIG. 1, reference numeral 95 denotes a distance measuring device such as a lightwave distance meter.
It is mounted on the head of a tripod 90 via an XY table 93.

A collimation hole 1b is provided at the center of the base 1. The collimation hole 1b is aligned with a mark (not shown) such as a cross line formed at a measurement point in advance, and the base 1 is arranged. For example, the center of the tripod 90 can be accurately positioned and fixed at the measurement point.

On each upper surface of the sliders 22, a tongue piece 22a is provided.
Are integrally formed to protrude. These three tongue pieces 22a ...
Are not located on the same circumference when viewed from a plane, and as shown in FIGS. 5 and 6, are located at positions where the three feet 2... Each is provided. Each tongue piece 22a has a circular through hole 2
2b is formed. The holes 22b match each other when the three legs 2 are folded (see FIG. 5).

Out of the three tongue pieces, the tongue piece located on the outermost side (the tongue piece located on the top in the overlapping state in FIG. 5)
A fixing screw 6 for temporarily fixing the three folded legs 2 is slidably and rotatably inserted into 22a. The length of the screw portion 6a of the screw 6 is determined by three tongue pieces 22.
a is longer than the thickness of the stacked layers a., and can protrude downward through the three through holes 22b. By screwing the fixing nut 7 to the protruding end, the three legs 2 are folded. It can be connected and fixed to each other .

In the present embodiment, tongue pieces 22a that overlap each other when the three feet are folded are provided at each end of the foot 2,
Although this three tongues 22a are fixed by screws 6, is not limited thereto, and a snap-fit manner, a magnet system and various modifications are possible, such as.

[0015]

As described above, according to the present invention, not only can the tripod be accurately fixed to the measuring point, but also the fixing for fixing the folded (turned) foot to the base. Since the means is provided, transportation in a folded state can be facilitated .

[0016] In addition, it is possible to cope with several types of tripods having different sizes by constructing the legs to be stretchable or providing a plurality of concave portions .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention .

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a side view showing a rotating state of the same.

FIG. 5 is an enlarged view of a main part of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 5 ;

[Description of Reference Numerals] 1 base biped 22a tongues (fixing means) 4 set screws (fixing means) 5 a recess

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01C 15/00-15/14 F16M 11/32

Claims (3)

(57) [Claims] 1. A tripod fixing device for fixing a tip of a tripod leg to a predetermined position, comprising: three feet having a concave portion engaged with the tip of the tripod leg; and the three feet. Consists of a base that is held at an interval and in the radial direction, and all three legs can be turned vertically with respect to the base.
An ability, the upper Symbol legs, is provided with a fixing means for fixing the foot pivoted relative to the base, it said fixing means is located is provided on the distal end of the three legs
And when the three legs are turned in the vertical direction of the base,
The tongues that overlap each other when
A tripod fixing device for fixing two tongue pieces . 2. The method according to claim 1, wherein the foot is extensible.
Fixing device of the tripod characterized in that there. 3. The method of claim 1 or 2, the recess upper
A tripod fixing device, wherein a plurality of the tripod fixing devices are provided along a direction in which a foot is extended .