JPS6319763Y2 - - Google Patents

Description

[Detailed description of the invention] This invention combines leveling rods used for general surveying so that they can be crossed vertically and horizontally and slid at the same time, making it possible to measure and record the depth and width of gutters at the same time. The aim is to provide metal fittings.

Next, an embodiment of the present invention will be explained with reference to the drawings.
1 and 1' are a pair of metal fittings on each side,
L-shaped gripping edges 3 are provided at each side end of the overlapping portions 2, 2'.
4 and 3', 4' are arranged facing inward so that the leveling rod a can be held between both the holding edges 3, 4 or 3', 4'. Further, reference numerals 5 and 5' refer to spring pieces having arcuate parts symmetrically formed on both sides, and each one side of the metal fittings 1,
1', screws 6, 6' on the inside of one of the clamping edges 3, 4'.
The center portions of each are fastened together. Also, 7,7'
indicates an axial hole drilled in the center of each overlapping portion 2, 2'.

Reference numerals 8 and 8' denote bullet plates having low protrusions 9 and 9' in the central part of the disk that can be fitted into the shaft holes 7 and 7' of the respective overlapping parts, and both the overlapping parts 2 and 2' are stacked back to back, and the protrusions 9, 9' of the bullet plates 8, 8' are fitted from the outside into the matching shaft holes 7, 7', respectively, and the By pivoting through the studs 10, both bullet plates 8, 8' press the center portions of both overlapping portions 2, 2'.

Therefore, one of the overlapping parts 2 is provided with locking holes 11 and 12 so that the overlapping parts 2 and 2' can be fixed at perpendicular and parallel positions, and locking holes 11 and 12 are provided in the other overlapping part 2'. Engagement protrusion 1 that can fit into the locking holes 11 and 12
3 and 13 are provided.

In addition, 14 in the figure is a protrusion to make it easier for the aluminum plate on the side surface of the leveling rod to slide when the leveling rod a is held, and there are arched portions on both sides of the spring pieces 5, 5' on the inside of the gripping edges 3', 4. Two pieces are provided correspondingly to each corner, and one is also provided at each corner of both overlapping portions 2, 2'.

In order to use the connecting bracket with the above configuration, two leveling rods used for general surveying are inserted between the clamping edges 3, 4 and 3', 4' of each side bracket, as shown in Figure 8. When the two leveling rods cross at right angles, the engaging protrusions 13, 13 will fit into the locking hole 1.
2, 12 to fit and lock. Therefore, the depth and width of the gutter can be measured at the same time at the construction site, and a photographic record can be taken accurately.

Furthermore, when two of these coupling fittings are used as shown in FIGS. 9 and 10, measurement and photographic recording can be carried out more easily by crossing the three leveling rods.

Furthermore, as shown in FIG. 11, it can also be used as a joint when connecting leveling rods in two stages, in which case the engaging protrusions 13, 13 fit into the locking holes 11, 11, respectively.

Furthermore, as shown in FIG. 12, both staffs can be connected and placed in parallel, making it convenient to carry.

Accordingly, in the present invention, a pair of bullet plates each having a convex portion fitted in the shaft hole of the overlapping portion in the center of the disc is placed on both sides of both shaft holes, and the center portions of both convex portions are fitted with rivets. Since it is rotatably mounted on the shaft, both bullet plates are crimped at the center of both overlapping parts, so there is no risk of it wobbling even if a heavy leveling rod is clamped and used for a long period of time. . Furthermore, since each one-side metal fitting can rotate in both left and right directions, it is extremely easy to operate with a leveling rod attached.

In addition, in the present invention, by rotatably pivoting, a locking hole is provided in one of the overlapping parts of both bullet plates whose central parts are crimped, and an engaging protrusion is provided in the other overlapping part. Since the engaging protrusion is fitted into and locked in the locking hole, the leveling rod is securely fixed in the orthogonal and parallel positions and does not move unnaturally.

In addition, the present invention has an extremely simple structure, and the parts such as the metal fitting on one side, the bullet plate, and the spring piece can be easily manufactured by molding, so that it can be provided at a low cost.

Furthermore, since a leveling rod for general surveying can be used as it is as a leveling rod for on-site inspection, it is very convenient and economical.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a front view, Fig. 3 is a rear view, and Fig. 4 is a sectional view taken along the line A-A in Fig. 1. Figure 5 is a sectional view taken along the line B-B in Figure 2, Figure 6 is a sectional view taken along the line C-C, Figure 7 is a plan view of the metal fitting on one side rotated 90 degrees, and Figures 8 to 12 are A usage state diagram is shown. 1, 1'... One side metal fitting, 2, 2'... Overlapping part,
3, 3'... pinching edge, 5, 5'... spring piece, 6,
6'... Screw, 7, 7'... Shaft hole, 8, 8'... Bullet plate, 9, 9'... Convex part, 10... Stud, 11... Locking hole, 12... Locking Hole, 13...engaging protrusion.

Claims (1)

[Scope of utility model registration request] L-shaped clamping edges are provided oppositely on both sides of the overlapping part, a spring piece is attached to the center inside of one of the clamping edges, and two metal fittings on one side with a shaft hole provided in the center of the overlapping part are placed back to back. A pair of bullet plates each having a convex portion fitted in the shaft hole of the overlapping portion in the center of the disc is placed over both sides of the shaft hole portion, and the center portions of both convex portions are rotatably mounted with rivets. By doing this, the central parts of both overlapping parts are crimped by both bullet plates, and a locking hole is provided in one overlapping part so that each overlapping part can be fixed at perpendicular and parallel positions, and the locking hole is provided in one overlapping part and engaged with the other overlapping part. A leveling rod connection fitting with a protrusion.