JPH0723687Y2 - Survey pole stand - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention mainly relates to a pole stand on which a light wave reflection prism for a lateral amount is set.

[Prior Art] Conventionally, a pole stand used to set a reflecting prism at a side point when measuring with an optical distance meter is
A pole was set up in a circular hole provided in the center of the head of the tripod, and the pole was adjusted vertically, and the screw was tightened and fixed.

[Problems to be solved by the invention] However, in the above-mentioned conventional pole stand, even if the pole stand is once adjusted vertically, it is likely to be out of order again when tightening and fixing the screw, which is troublesome in operation and easily causes an error in surveying. was there.

Therefore, in the present invention, once the pole set up inside the round hole of the leg is adjusted vertically, it will be automatically fixed in that state so that the operation is easy and accurate measurement is possible. It was done.

[Operation] The lower surface of the slide plate is attracted to the upper surface of the leg base plate with an appropriate magnetic force, and the upper surface of the slide plate is elastically restrained by small balls, so the lower end of the pole inserted into the pole hole Place the center of the measuring point and move the upper part of the pole while looking at the level, the slide plate will move accordingly, so stand the pole vertically within the range of movement and release the hand from the pole. The slide plate is magnetically fixed and the pole is fixed.

[Means for Solving the Problem] In order to achieve the above object, the surveying pole stand in the present invention comprises a leg base plate, a slide plate and a leg cover, and the leg base plate is a magnetic metal plate. A circular hole is provided in the center part and a supporting leg is axially attached to the lower side, and the slide plate has a lower side surface formed by a magnet plate and a circular pole hole is formed in the center part, and the peripheral edge of the hole is formed. Several claw pieces are projected on the subordinate side and placed on the leg head bottom plate, and the claw pieces are projected from the circular hole.The leg head cover is provided with a through hole in the central portion, and A recessed hole is provided on the lower side of the peripheral edge portion to insert a spring, a small ball is press-fitted against the spring, and the peripheral edge portion is attached to the peripheral edge portion of the leg head bottom plate to provide a required space between the leg head bottom plate and the leg cap The space is formed and the upper surface of the slide plate is elastically restrained by the small balls.

[Embodiment] 1 is a leg base plate in which a circular hole 2 is provided in the center of a circular iron plate to form an annular shape, and three supporting legs 3 are pivotally mounted 5 on a bearing 4 at appropriate positions below the plate. .

Reference numeral 6 denotes an annular slide plate provided with a circular pole hole 7 in the central portion thereof. The lower surface side is formed by a magnet plate 8, the upper surface side is formed by a plastic plate 9, and the lower peripheral portion of the pole hole 7 is formed. On the side, four plastic claw pieces 10 are projected at regular intervals, and the diameter of the pole is slightly smaller than that of the pole hole 7.
Even if 11 is inserted, it can be securely clamped.

Then, the slide plate 6 is placed on the leg base plate 1 and attracted by a magnet, and each claw piece 10 is projected downward from the circular hole 2.

12 screw the peripheral part on the cylinder to the peripheral part of the leg base plate 1
A leg head cover fixed by 13, a through hole 14 having a diameter substantially the same as that of the circular hole 2 is provided in the central portion thereof, and several recessed holes 16 are provided below the peripheral edge portion 15 of the through hole 14. Springs 17 are inserted in the respective concave holes 16 and small balls 18 are press-fitted against the resilience of the springs 17, and the upper surfaces of the slide plate 6 are elastically restrained by the small balls 18. Reference numeral 19 denotes a space formed between the leg head base plate 1 and the leg head cover 12 and has a size necessary for the slide plate 6 to move. In the figure, 20 indicates a reflecting prism.

[Effect of the Invention] In the present invention having the above-described structure, the upper portion of the pole inserted into the pole hole of the slide plate is moved to stand vertically, and when the hand is released from the pole, the pole is automatically fixed in the vertical state. It Therefore, after adjusting the conventional pole to the vertical position,
Since it is not necessary to tighten with screws, the pole stand operation is easy and accurate measurement can be performed.

Further, since several claw pieces are provided on the lower side of the pole hole, even if the pole diameters are different, the claw pieces can be reliably held.

[Brief description of drawings]

1 shows a central longitudinal sectional view, FIG. 2 shows an exploded perspective view, and FIG. 3 shows a perspective view of a state of use. 1 ... leg head bottom plate, 2 ... circular hole 3 ... supporting leg, 6 ... slide plate 7 ... pole hole, 8 ... magnet plate 9 ... plastic plate, 10 ... claw piece 12 ... leg cover , 14 …… through hole 16 …… concave hole, 17 …… spring 18 …… small ball, 19 …… space part.

Claims (1)

[Scope of utility model registration request] 1. A leg head bottom plate, a slide plate, and a leg head cover, wherein the leg head bottom plate is a magnetic metal plate having a circular hole in the center and formed in an annular shape, and a supporting leg is axially attached to the lower side. In the slide plate, the lower side surface is formed of a magnet plate, a circular pole hole is opened in the center, and several claw pieces are projected on the lower side of the peripheral edge of the hole to be placed on the leg base plate. The claw piece is projected from the circular hole, and the leg head cover is provided with a through hole in the central portion, a concave hole is provided below the peripheral portion of the through hole to insert a spring, and a small ball is resisted against the spring. And press the peripheral edge onto the peripheral edge of the leg cap bottom plate to form a required space between the leg cap bottom plate and the leg cap cover, while elastically restraining the upper surface of the slide plate with the small balls. A surveying pole stand.