JPH0547371Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial field of use) In concrete gutter construction, legal framework construction, underground drainage construction, etc., the width and excavation depth of the ground are photographed and recorded after the construction is completed. It is used as confirmation inspection material, and to record this photo, it is necessary to use a rod with a horizontal staff scale and a rod with a vertical staff scale, and a set of two rods can be slid in directions that intersect with each other. Although support metal fittings for holding the image are conveniently used, it is an attempt to further improve this type of support metal fittings in order to provide clearer photographic records.

(Prior Art) Various metal fittings are known for cross-supporting photographic recording rods, and in practice there are also "slide rods",
Even though they are called "free cloth" or "cross rod metal fittings," they are only listed in catalogs and cannot be cited as general books or literature, but they are usually short lip grooves. A typical example is one in which lightweight sections (so-called C-chan) are assembled back-to-back so that they can rotate, allowing the rod to slide freely within the lip groove. In order to do this, edge pieces with a groove-shaped cross section are attached to both side edges along the longitudinal direction.

Therefore, the scale feet of the rod's horizontal scale (that is, the part of the scale line that reaches the end of the staff on the staff side) warp to about 8 mm and are covered by the edge piece, and both cross-supported staff scales are the same as the thickness of the staff on the front side. Coupled with the fact that there is a distance between the front and back that corresponds to the sum of the thickness of the web of the metal fittings and twice the web thickness of the metal fittings, there is a tendency for measurements made by checking the scale to be inaccurate. There were also disadvantages that affected the situation.

(Problem to be solved by the invention) Without concealing the eye that reaches the end of the scale side of the leveling scale of the photographic recording rod, and without requiring any intervening part between the front and rear rods, Therefore, it is an object of this invention to provide a cross-slide support for a photographic recording rod which is designed to enable more accurate comparison with the leveling scale.

(Means for Solving the Problems) This device has a flat plate shape with a thick cross-shaped external outline, and has a pair of protruding claws on the left and right sides of each of the upper and lower overhangs. With a pair of receiving claws protruding in the same direction as the holding claws but shorter, the rod is placed directly on the scale surface of a rod supported between the pair of receiving claws with the horizontal staff scale facing forward. The rod has a vertical staff scale with a protruding length that can be engaged with guide grooves provided on both sides of another rod that also faces the front, and has a horizontal staff scale. A cross-slide support for a photographic recording rod, characterized in that it has a positioning means spring-biased toward another rod having a locked vertical staff scale, the cross-slide support fitting having a horizontal staff scale and a vertical staff scale. It is useful to use a set of two rods with scales on the front and back surfaces, and to use a vertical scale scale in combination with rods that extend over the chamfer surfaces on both sides.

(Function) The cross slide support fitting according to this invention has a pair of holding claws engaged with guide grooves specially provided on both sides of a rod having a vertical staff scale, and a horizontal staff scale is directly attached to the back side of the rod. It is a functional feature that the two rods are held orthogonal by spring biasing the other rod from behind.

In addition, in the above-mentioned case, and also in the following embodiment, a case will be described in which a rod having a vertical staff scale and a rod having a horizontal staff scale are arranged in front and behind each other, and are supported by cross slide fittings behind them. For convenience of explanation, it goes without saying that this invention also includes a modification in which the rod with the horizontal staff scale is positioned in front and held with a claw.

(Example) Fig. 1 is a front view of a cross rod in which a set of two photographic recording rods are held perpendicular to each other by the cross slide support fitting of this invention, Fig. 2 is a right side view, and Fig. 3 is a cross rod. In the bottom view, numeral 1 indicates a rod having a horizontal staff scale x, 2 indicates another rod having a vertical scale y, 3 is a cross-slide support, or 4 is its positioning means.

Rods 1 and 2 have a horizontal staff scale x and a vertical staff scale y on the front and back, as shown in Figure 4 a and b with the middle part omitted, and can be used separately as appropriate, but both the front and back can be used separately. They may be individual rods with the same scale; in any case, a pair of guide grooves 5 (A-
In this example, a chamfer is applied along both sides of the back side on which the vertical staff scale y is applied.
It is desirable to have a scale on both side edge chamfer surfaces.

The cross slide support fitting 3 used to orthogonally hold the rods 1 and 2 has a flat plate shape with a generally thick cross-shaped external outline, as shown in Fig. 5 from the front, Fig. 6 from the side, and Fig. 7 from the bottom. It has a pair of holding claws 8 that protrude to the left and right of each of the upper and lower overhangs 6 and 7, and a pair of receiving claws 11 that protrudes above and below each of the left and right overhangs 9 and 10, respectively.

The spacing between the pairs of receiving claws 11 is the same as the width of the rod 1, but the length of the claws 11 is slightly narrower than the thickness of the rod, so that the rod 1 having a horizontal scale scale between the pair of claws 11 is made along its longitudinal axis. It is supported on a rack so that it can slide in the direction.

On the other hand, the pair of holding pawls 8 are also aligned to the width of the rod 2, leading to hook-shaped ends that fit into and engage the guide grooves 5 provided on both sides of the rod 2, which directly overlap the horizontal staff scale surface of the rod 1. The rod 2 protrudes longer than the receiving claw 11 until it is engaged, and the rod 2 can be slid in the longitudinal direction under this engagement.

A recess 12 is provided in the flat central portion of the cross slide support fitting 3 as shown in cross-section A-A in FIG. leaf spring 15
By fixing the rod 1 with the rivet 16 at an eccentric position, the thrust of the set screw 13 acting on the leaf spring 15 on the back side of the rod 1 presses against the rod 2 which is engaged with the pair of holding pawls 8 and restrained. , both rods 1 and 2
It is clear that it is possible to position the

This is a modification in which the spring biasing force of the leaf spring 15 itself is used for the above-mentioned pressing force instead of the set screw 13, and the above-mentioned pressing force is relaxed by cam operation of the pull rod that penetrates from the bottom of the recess 12. You can.

In the figure, reference numeral 17 indicates reinforcing ribs provided as appropriate on the overhanging portions 6, 7, 9, and 10, and reference numeral 18 indicates reinforcing protrusions.

(Effect of the invention) The cross slide support fitting of this invention firmly restrains a set of two photographic recording rods in an orthogonal posture in which they are directly stacked, but the gripping claws of the support fitting hold the rods on both sides of the rod. Since it only engages with the guide groove of the scale and does not protrude above the level scale scale surface, there is no advantage of concealing the scale feet of the scale scale by the supporting metal fittings and related parts, and the scale feet of the scale scale cannot be hidden by direct overlapping. The influence of shadows on the rod's staff scale is reduced, making it possible to obtain clear photographic records.

[Brief explanation of the drawing]

Fig. 1 is a partial front view of the photographic recording cross rod, Fig. 2 is a right side view, and Fig. 3 is a bottom view.
4 is a front and back view of the rod, FIG. 5 is a front view of the cross slide support fitting, FIG. 6 is a right side view, and FIG. 7 is a bottom view. 1, 2... Rod, 3... Cross slide support fitting, 4... Positioning means, 5... Guide groove,
6, 7... Upper and lower overhang portions, 8... Holding claws, 9, 1
0...Left and right overhangs, 11...Claw catch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A flat plate with a thick cross-shaped external outline, and a pair of gripping claws protruding from the left and right sides of each of the upper and lower overhangs, respectively held by the upper and lower sides of each of the left and right overhangs. Along with a pair of receiving claws protruding in the same direction as the claws but shorter, the vertical staff scale is directly overlapped on the scale surface of the rod which is mounted and supported between the pair of receiving claws with the horizontal staff scale facing forward. The rear side of the rod is provided with a protruding length that can engage with guide grooves provided on both sides of another rod also facing the front, and also has a horizontal staff scale.
It has positioning means spring biased toward another rod having a vertical staff scale engaged by a pair of gripping pawls. A cross-slide support fitting for photographic recording rods, which is characterized by: 2. Used in combination with a set of two rods, each with a horizontal staff scale and a vertical staff scale on the front and back sides. A cross slide support fitting according to claim 1. 3. Claim 1, wherein the vertical staff scale is used in combination with rods extending over both side edge chamfer surfaces.
Or the cross slide support metal fittings described in 2.