JPS58186001A - Divided measuring instrument - Google Patents

Abstract

PURPOSE:To measure exactly a center position, by providing a submeasuring body moving along the outside of a main measuring body provided with a guide rack, and also an intermediate measuring body which follows movement of the sub-measuring body and moves by 1/2 of its moving distance. CONSTITUTION:A sub-measuring body 2 like vernier calipers is provided on a main measuring body 1. A metallic intermediate measuring body 12 moving slidably along the inside of the main measuring body 1 is set to length of about half of the main measuring body 1, a measuring part 13 made of a plate spring, which is curved and extended downwards by fixing its upper end is provided on one end part of the intermediate measuring body 12, and this measuring part 13 has a linear part 14 for constituting a reference line on the side opposed to a linear part 4 which a pinch-holding part 3 of the main measuring body 1, and is provided so that the linear part 14 is positioned correspondingly to the contact face when a pair of pinch-holding parts 3, 10 are brought into contact with each other. The lower side of a pinion provided on the intermediate measuring body 12 through an axis 15, and its upper side are meshed with a rack 9 of a sub-measuring body 7 and a rack 9 of the main measuring body 1, respectively, so that the intermediate measuring body 12 moves by 1/2 of a moving extent of the sub-measuring body 7, and a center position can be measured by the linear part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dividing measuring tool for measuring the center line or center point of wood, ironwork materials, etc.

Conventionally, in order to measure the center (core) of flat wood, ironwork materials, or columnar wood or ironwork materials, the width dimension is measured using a bending scale ° etc. at multiple points of an arbitrary long board or pillar material. The center line was measured by taking the vertical and vertical dimensions, finding a half point, marking it, and connecting these marks with a straight line. In addition, to measure the center point of a circular material, you can measure the circumference of the circular material and calculate it, or you can draw several lines at different angles from the position that is thought to be the diameter of the circular material, and then draw these multiple diameter lines at different angles. The center point was the intersection of the two.

However, these measuring operations are very time-consuming as they involve repeating the same task at several locations, and it is not possible to accurately measure the center because it is done by eye or mental calculation.

The present invention is a dividing measuring tool invented by focusing on these drawbacks, and can determine the center of long pieces of wood or ironwork by simply placing the grips on both sides of the piece in the width direction. In the case of paddy field shapes, the center point can be measured by simply holding the material twice at different angles on the circumference; a holding part is fixed at one end and a guide rack is provided along one side. a main scale body, a vernier body that moves on the outside of the main scale body, fixes a clamping part that pairs with the clamping part at one end, and forms a rack to face the guide rack, moves inside the main scale body; A medium length body is provided with a measuring part at one end of which a reference line corresponds to the contact surface when the pair of clamping parts come into contact with each other, and a medium length body is provided with a pinion that engages with each of the racks, and according to the movement of the vernier body. The object of the present invention is to provide a split measuring instrument in which a rotating pinion moves a medium length body a distance that is half the distance of a vernier body.

Next, drawings showing one embodiment of the present invention will be described.

The main body (1) made of metal and having an appropriate length has an inverted U-shape in longitudinal section and has an opening (2) on the front side. A clamping portion (3) is fixed to one end of the main body (1). The clamp 8A (3) of the main body (1) has a straight part (4) extending perpendicularly to the width direction on the other end side of the main body (1), and has a half-shaped part tapered downward. It has a matching shape. Main body (
At the upper bent end of the opening (2) of 1), a guide rack (5) having downward teeth is provided at approximately the same length as the main body (1),
A stopper (6) is fixed within the other end of the main body (1).

This stopper (6) is removably fixed to the main body (1) using screws or the like, and by removing the stopper (6), the vernier body and medium body (described later) can be moved to the main body (1). 1
) can be decomposed from

The metal vernier body (7) provided so as to slide outward from the main body (1) has approximately half the length of the main body (1), and is similar to the main body (1). The longitudinal section thereof is formed into a substantially lip groove shape, and a rack (9) having upwardly directed teeth is formed on the lower side of the opening (8). The teeth of the rack (9) extend over the entire length of the vernier body (7) and face the guide rack (5) of the main body (1). At one end of the vernier body (7) there is a clamping part QG that pairs with the clamping part (3) of the main vernier body (1).
is fixed, and this clamping part αG is fixed to the clamping part (3) of the main scale body (1).
) has a straight line part αD that contacts the straight line part (4), and has a deformed triangular shape tapered downward.

A metal medium body (A) provided to slide inside the main body (1) has a length about half of the main body (1). At one end of the medium body @, there is provided a measuring part (toward) of a flat spring type whose upper end is fixed and which extends downwardly in a curved manner. Measuring part (
) is the straight part (4) of the clamping part (3) of the main body (1).
) is provided on the side opposite to the straight line part Q41 constituting a reference line, and is provided so that when the pair of clamping parts f31 and 0□ come into contact, the straight part α is positioned correspondingly to the contact surface.

The measurement portion (end) has a substantially semi-contoured shape with a downward taper. In addition, by fixing the measuring part Q& to the medium length body 02, the clamping part QO of the vernier body (7)
It will be located above. A shaft 06 is fixed to the other end of the medium body (2), and a pinion rotatably fixed by the shaft 00 is provided. The lower side of the binion uh engages with the vernier body (force rack (9)), and the upper side thereof engages with the guide rack (5) of the main body (1), and the middle body 02J is the main body. It is configured to slide inside the main body (1) until it touches the stopper (6) of the body (1).

To measure the center of a piece of wood or ironwork using the split measuring tool of the present invention, place the main scale body (1) at the measuring point of the object to be measured (not shown) such as wood to be centered, and ulnar body (7
) with your fingers and slide it. Verniar body (7)
After moving the outside of the main scale body (1) by the width of the measurement point, the respective clamping parts (3) of the main scale body (1) and vernier body (7), Q
Insert the measurement point between the straight parts (4) and (b) of Q.

The movement of the vernier body (7) with respect to the main body (1) is as follows:
While the rotational movement of the binion (g) that meshes with the rack (9) of 7) moves the medium length body (2) connected by the shaft of the binion (g), as shown in Fig. 6. As shown, when the vernier body (7) moves a distance of 21, the moving distance is halved by the rotational movement of the binion αQ, and the distance of the movement of the medial body a2ir and the vernier body (7) is halved. It is always followed by a distance l of 1. On the other hand, when the medium body @ is moved by the distance l shown in Fig. 6, the binion arm of the medium body (2) moves the distance l and rotates by the distance l, so that the binion αQ becomes Rotate by a distance corresponding to a distance 21 obtained by adding the rotation distance l to the movement distance l.

The vernier body (7) forming the rack (9) that engages with this binion (g) moves a distance 2e, and the moving distance ratio of the vernier body (7) and the middle body (2) is always 2:1. It is what it is.

Therefore, at the time when the measurement point is inserted, the medium body (
2) is each clamping part (3) of the main body (1) and vernier body (7),
The center position of the measurement point inserted between be.

In addition, in order to measure the center point of a circular measurement point, each holding part (3) of the main scale body (1) and vernier scale body (7),
If you insert the circumferential side of the circle twice at different angles between 00 and 00,
The measuring part 09 of the medium length body (2) is always at the center position, and the measuring part 09 of the medium length body (2)
If you draw a book, you can measure the intersection of each line as the center point.

According to the present invention configured as described above, the vernier body is moved relative to the main body and the measurement point is simply inserted between the clamping parts provided on each of the main body and the vernier body. , the medium length body that is driven by the vernier body can be driven by one-half of the moving distance of the vernier body, and the measuring part of the medium length body can be located at the center position of the normal pressure measurement point, and the The center of the object to be measured can be accurately measured with one extremely simple operation. Furthermore, it has features such as having a simple structure, being easy to manufacture, and being usable by any number of people.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a sectional view taken along the line ■-m in FIG. 1.
FIG. 4 is a sectional view taken along line IV-F in FIG. 1, FIG. 5 is a sectional view taken along line ■-v in FIG. 1, and FIG. 6 is a front view of the measurement state.
In the drawing, (1) is the main body, (2) is the opening, (3) is the clamping part, (4) is the straight part, (5) is the guide rack, (6) is the stopper, and (7) is the vernier body. , (8) is the opening, (9) is the rack, 00 is the clamping part, OI) is the straight part, 02 is the medium length body,
(2) indicates the measuring part, 0 indicates the straight section, 0υ indicates the shaft, and ◇0 indicates the pinion.

Claims (1)

[Claims] A main scale body with a clamping part fixed to one end and a guide rack along one side, and a main scale body that moves outside the main scale body and has a clamping part paired with the clamping part fixed to one end and facing the guide rack. A measuring section is provided at one end of the vernier body, which moves inside the main scale body, so that the pair of clamping parts touch each other and the reference line corresponds to the contact surface of the rack, and engages with each of the racks. 1. A split measuring instrument comprising a medium length body provided with a pinion, and wherein the medium size body moves a distance half the distance of the vernier body by a pinion that rotates according to the movement of the vernier body.