JPH04158201A - Vernier calipers - Google Patents

Abstract

PURPOSE:To enable the measurement of a length up to a dimension of the maximum value plus an offset value by making a slider insertable reversely into a main body and by providing another vernier scale having the offset value thereon. CONSTITUTION:An outside measure length or an inside measure length (hereinafter called a length) R1 within a main scale 150 mm, for instance, is measured by jaws 11 and 21, or jaws 12 and 22, the main scale 10a and a vernier scale 20a. A length R2 in the dimension of 100 to 350 mm is measured by the jaws 11 and 22 or the jaws 12 and 21 with a slider 2 pulled out of a main rule 1 and then inserted thereinto in a state of its longitudinal direction being reversed. The value of the length R2 on the occasion is a measured value X2 between the main scale 10a and an offset vernier scale 20a2 plus an offset value 10 cm, or a measured value X3 between the main scale 10a and an offset vernier scale 20a3 plus an offset value 20 cm. Only by inserting the slider 2 with its longitudinal direction reversed, in other words, the execution of the measurement by vernier calipers for 150 mm, up to a dimension of 350 mm with 200 mm added, is enabled. In the case of measurement by an inch system, a dimension with 8 inches added can be measured likewise.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a caliper used for dimension measurement.

[Conventional technology]

As shown in FIG. 20, a conventional caliper has a main scale 1 that has an outer measuring jack 11 and an inner measuring jack 12 at one end, and is slidable with respect to the main measuring scale 1. The slider 2 includes a slider 2 having an outer measuring bolt 21 and an inner measuring bolt 22 corresponding to the bolts 11 and 12 of the main scale 1, respectively, and a depth bar 3 having one end fixed to the slider 2. The main scale 1 has a main scale 10, and the slider 2 has a vernier scale 20. In this caliper, there is a dial 11 for outside measurement.
．． The outer length 11 at the opposite inner edges of 21 and the inner length 1 at the outer edge of the inner measuring tube 12.22.
2 by the depth bar 3 as shown in FIG. , Furthermore, there is a difference in level between one end edge of the main scale 1 and one inner side 22 as shown in FIG. 22! , for example, 0.05 m from the main scale 10 and the vernier scale 20.
It is designed to be able to perform measurements in m units.

[Problem to be solved by the invention]

However, conventional calipers can only be used for measuring up to 150 mm if they are for 150 mm as shown in the figure. However, you will have to use calipers for longer lengths. The present invention has been made in view of these points, and its purpose is to provide a caliper with a long measurable length compared to the overall length, and to provide a caliper with a depth bar that protrudes only when measuring depth or steps. Our goal is to provide calipers that can be used to

[Means for Solving the 8 Problems] The present invention provides a main scale having a main scale and a measuring scale, and a slider that has a vernier scale and a measuring scale and is slidable with respect to the main scale. In the caliper, the slider can be replaced in the opposite direction to the main body in the sliding direction, and the slider has an offset value at a position where the main scale side foot and the slider side foot form a specific distance. The first feature is that it is equipped with a vernier scale, and the main scale is equipped with a main scale and a measuring scale, and the slider is equipped with a vernier scale and a measuring scale and can freely slide with respect to the main scale. A second feature of the caliper is that the depth bar can be slid relative to the slider in the same direction as the slider slides relative to the main body, and can be fixed to the slider at a specific position. have. [Operation] According to the first feature of the present invention, when the slider is replaced with respect to the main body, the actual measured value is obtained by adding the offset value of the vernier scale used at that time to the value measured between the sliders. In this case, the length can be measured up to the maximum value of the main scale marked on the main scale plus the offset value. Also, according to the second feature, by making the depth bar protrude in advance by a required dimension from the slider, it is possible to measure depths and steps to a range that includes this required dimension as an offset value. It is something. [Embodiment] The present invention will be described below in detail based on the illustrated embodiment. As shown in FIGS. a main scale 1 having a main scale 1; a slider 2 which is slidable with respect to the main scale 1 and is provided with posts 21 and 22 corresponding to the posts 11 and 12 of the main scale 1; It consists of a depth bar 3 that is slidably incorporated, and the main scale 1 is as shown in FIGS. 3 and 4.
It is equipped with a guide arm 13 that spans the entire length on its surface side.
Further, a metric main scale 10a and an inch main scale 10b are carved on both sides of the guide arm 13, respectively. Here, the main scale 10a is up to 150 mm, and the main scale 10b is up to 6 inches. Furthermore, in FIGS. 1 and 2, the inch scale is omitted. On the other hand, the slider 2 is slidably fitted to the guide arm 13, and as shown in FIG. In addition to being engraved with an inch-based vernier scale 20b, there is also an inch-based offset vernier scale 20b with +4 inch and +8 inch indications added to the - side edge.
2, 20 b 3, +10cm and +2 on the other side edge
The tail is engraved with a metric offset vernier scale 20a2.20az with an additional 0cm display. Here, the offset vernier scale 20a2.2
To explain 0as, this is done by removing the slider 2 from the main scale 1, then inserting it into the main scale 1 with the longitudinal direction of the slider 2 reversed.
Offset vernier scale 20 az, 2
0 When R3 and the main scale 10a of the main scale 1 are lined up closely, and the mounting 11 and the mounting 22 are facing each other, and the mounting 12 and the mounting 21 are facing each other, in this state, the mounting 11 and the mounting 21 are arranged to face each other. When the outer length R2 measured with 22 is 100 mm, as shown in FIG. 11, +
So that the O position of the offset vernier scale 20a of lQcm matches the O position of the main scale 10a of the main scale 1.
When the offset vernier scale 20a2 is carved and the outer length R3 is 200 mm, as shown in FIG. 12, the +20 cm offset vernier scale 20
a. 1-inch offset vernier scale 201)*, 20b3, in which an offset vernier scale 20a is carved so that the 0 position of the main scale 10a matches the 0 position of the main scale 10a.
The same applies to Note that when the slider 2 is replaced in this way, the slider 21 used for measuring the outer side of the slider 2 is used to measure the inner length, and the slider 22 used for measuring the inner side is used for measuring the outer length. In order to become
Here, the lengths of the legs 21 and 22 are the same, and the lengths of the legs 11 and 12 are also the same as those of the legs 21 and 22. As shown in FIGS. 6 and 7, the slider 2 is provided with a guide groove 23 on its back side. A rod-shaped depth spar 3 is slidably disposed in this guide groove 23, in which the width W2 at one end where the jaws 21 and 22 are provided is narrower than the width W1 at the other part, as shown in FIG. It is set up. In the figure, 24 is an operation part for sliding the slider 2, 25 is a set screw for fixing the slider 2 to the main scale 1, 26, 27 is a set screw for fixing the depth spar 3 to the slider 2, In FIG. 7, 28 is a protection plate for the depth spar 3, and 29 is a pressure spring for preventing rattling of the slider 2. As shown in FIG. 9, the depth spar 3 is rod-shaped.
+10cm and +20cm on the center side and one end side
A locking groove 31a with an additional indication of. 32a, and locking grooves 31b and 32b with +4 inch and +8 inch markings, and locking holes 33a and 33b in the center and one end, respectively. 34a and 34b, the other end is thicker as shown in FIG. 10, and the guide groove 23 of the slider 2
7, the relationship between the width of the guide groove 23 and the thickness of the depth spar 3 prevents it from protruding to the left in FIG. Note that each of the locking grooves 31a, 32a, 31b, and 32b engages with a positioning metal fitting 35 provided on the slider 2, and when the depth spar 3 is pulled out from the tail end of the slider 2, the positioning metal fitting 35 is engaged. one of the locking grooves 31a, 32a. 31b and 32b, the depth spar 3 protrudes from the tail end of the slider 2 (to in FIG. 18).
) are now 10 cm, 20 cm, 4 inches, and 8 inches. Next, the measurement method using this caliper will be explained. now,
When measuring the outer length or inner length R1 within 150 mm, as shown in Fig. 13, as with conventional calipers, the main scale 10a and the vernier scale Measurements can be taken at 20a. When measuring the outer length or inner length R6 in the range of 100 mm to 350 mm, first remove the slider 2 from the main scale 1, then insert it into the main scale 1 with the longitudinal direction of the slider 2 reversed. It is sufficient to measure at 11.22 or 12.21, and R2 at this time
As shown in FIGS. 14 and 15, the value of is calculated by adding an offset value of 10 cm to the measured value X2 between the main scale 10a and the offset vernier scale 20a2, or by adding an offset value of 10 cm to the measured value This is the value obtained by adding the offset value of 20 cm to the leap measurement value x3. In other words, even though it is a 150mm caliper, it can measure up to 350mm (200mm + 150mm) by simply flipping the slider 2 and replacing it. , main scale 10b and vernier scale 20
b and offset vernier scale 20 b 2 , 20
b), and when using the offset vernier scale 20b2, add 4 inches to the measurement value,
If an offset vernier scale 20b is used, 8 inches may be added to the measured value. On the other hand, when measuring depth, the slider 2 is attached to the main scale 1 in a steady state, and the main scale 10a
and the vernier scale 20a, loosen the setscrew 26, pull out the differential spur 3 from the head side of one end of the caliper, and place one end of the caliper against the edge as shown in Fig. 16. At the same time, the tip of the depth spar 3 is brought into contact with the bottom surface. After fixing the depth spar 3 by tightening the setscrew 26 so that the depth spar 3 does not shift relative to the slider 2, the slider 2 is slid until the tip surface of the depth spar 3 matches one end surface of the caliper. At this time, the value that can be read from the main scale 10a and the vernier scale 20a becomes the depth. As shown in FIG. 17, the depth can also be measured using the slider 2 and the main scale 1. If this depth exceeds 150mm, set screw 27
Loosen the depth spar 3 and pull out the depth spar 3 from the tail side of the other end of the caliper. At the same time, engage the spring-biased positioning fitting 35 provided on the slider 2 with the locking groove 31a or 32a of the depth spar 3, and then tighten the set screw. 27 and hole 3
3a or the stopper hole 34a, and attach the depth spar 3.
Apply an offset of 10 cm or 20 cm to Once a measured value is obtained based on the scale 20a, the value obtained by adding the above-mentioned offset value to this measured value becomes the actual depth value. When performing inch-based measurements, the locking grooves 31a, 3
2a, the locking grooves 31b, 32b, the locking hole 33a,
If stop holes 33b and 34b are used instead of 34a, the depth can be determined by adding an offset value of 4 inches or 8 inches to the measured value by the main scale 10b and the vernier scale 20b. The level difference can be measured using the same method as the depth measurement, as shown in FIG. 19 or as shown in FIG. 18.

【Effect of the invention】

As described above, in the first feature of the present invention, when replacing the slider with respect to the main body, the actual measured value is obtained by adding the offset value of the vernier scale used at that time to the value measured between the sliders. In this case, the length can be measured up to the maximum value of the main scale engraved on the main scale plus the offset value, and the measurable range is extremely large. It is something. In addition, according to the second feature, by making the depth spar protrude in advance by a required dimension from the slider, the depth can be extended to a range that is the maximum value of the main scale of the main scale plus this required dimension as an offset value. It is possible to measure the height difference between the pods.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a front view of the same, Figs. 3 and 4 are a partial front view and side view of the main scale of the above, and Figs. 5 to 7 are Front view, side view, and rear view of the slider shown above, Figure 8 is an enlarged view of part A in Figure 7, Figure 9 is a front view of the depth spar shown above, and Figure 10 is an enlarged view of part B in Figure 9. Figures 11 and 12 are illustrations of offset vernier scales, Figures 13 to 15 are illustrations of outer length or inner length measurements, and Figures 16 to 18 are depth measurements. Figure 19 is an explanatory diagram of the measurement of step height,
FIG. 20 is a front view of the conventional example, and FIGS. 21 and 22 are explanatory diagrams of the measurement of depth and step according to the same method, in which 1 is the main scale, 2 is the slider, 3 is the de-asper, 10a is the main scale, 11, 12° 21.22 indicates the horizontal scale, 20a indicates the vernier scale, and 2 Q a2, 20 a3 indicates the offset vernier scale. Agent Patent Attorney Ishi 1) Chief 7 Figure 11 Figure 12 Figure 13 Figure 14 Figure 18 Figure 19

Claims (2)

[Claims] (1) In a caliper consisting of a main scale equipped with a main scale and a measuring scale, and a slider equipped with a vernier scale and a measuring scale and slidable with respect to the main scale, the slider is relative to the main body in the sliding direction. This caliper is characterized in that it can be replaced in the opposite direction, and is equipped with another vernier scale having an offset value at a position where the main scale side scale and the slider side scale form a specific distance. (2) A caliper consisting of a main scale having a main scale and a measuring scale, a slider having a vernier scale and a measuring scale and slidable relative to the main scale, and a depth bar attached to the slider, A caliper characterized in that the depth bar is slidable relative to the slider in the same direction as the slider relative to the main body and fixed to the slider at a specific position.