JPH0629681B2 - Calipers - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

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

[Prior art]

The conventional caliper is, as shown in FIG. 20, a main scale 1 having an outer measurement jaw 11 and an inner measurement jaw 12 at one end, and is slidable with respect to the main scale 1. A slider 2 having an outer measuring jaw 21 and an inner measuring jaw 22 respectively corresponding to the jaws 11 and 12 of the main scale 1, and a depth bar 3 having one end fixed to the slider 2 are configured. The main scale 1 has a main scale 10 and the slider 2 has a vernier scale 20. And in this caliper, the jaw 1 for outside measurement
The outer length _{l 1} inside opposite edges of 1,21, the inner length _{l 2} outside edge of jaw 12 and 22 for the inner measurement, the depth _{l 3} as shown in FIG. 21 by Depusuba 3 , Furthermore, one edge of the main scale 1 and one inner jaw 22
As shown in FIG. 22, it is possible to measure the step l ₄ between the distances between and, and at the time of this measurement, from the main scale 10 and the vernier scale 20, for example, 0.05.
It is designed to measure in mm.

[Problems to be Solved by the Invention]

However, the conventional calipers can only be used for measuring up to 150 mm if they are for 150 mm shown in the figure,
In order to measure a longer length, a caliper for a longer length must be used in any of the above measurements. The present invention has been made in view of the above points, and an object thereof is to provide a caliper whose measurable length is long compared to the entire length, and a depth bar only when measuring depth and level difference. It is to provide a caliper that can be projected.

[Means for Solving the Problems]

Thus, the present invention is a caliper consisting of a main scale having a main scale and a measuring jaw, and a slide caliper having a vernier scale and a measuring jaw, which is slidable with respect to the main scale. It is replaceable in the opposite direction with respect to the main body, and is equipped with another vernier scale having an offset value at a position where the jaw on the main scale side and the jaw on the slider side form a specific distance. Of the main scale having a main scale and a measuring jaw, a slider slidable with respect to the main scale having a vernier scale and a measuring jaw, and a depth bar attached to the slider. In the caliper, the depth bar is slidable and specific position with respect to the slider in the same direction as the slider slides with respect to the main body. In has a second feature that is freely fixed to the slider. [Operation] According to the first feature of the present invention, when the slider is replaced with respect to the main body, the measured value is obtained by adding the offset value of the vernier scale used at that time to the value measured between the jaws. It is possible, and at this time, the length can be measured up to the range in which the offset value is added to the maximum value of the main scale marked on the main scale. According to the second feature, the depth bar is projected in advance by a required dimension with respect to the slider, so that the depth and the step can be measured up to a range in which the required dimension is added as an offset value. It is a thing. [Embodiment] The present invention will be described in detail below with reference to the illustrated embodiment. This caliper has a jaw 11 for outer measurement and a jaw 12 for inner measurement at one end, as shown in FIGS. 1 and 2. A slider 2 provided with a main scale 1 provided with, and jaws 21 and 22 slidable with respect to the main scale 1 and corresponding to the jaws 11 and 12 of the main scale 1, respectively. It consists of a depth bar 3 which is slidably incorporated. The main scale 1 is, as shown in FIGS. 3 and 4,
A guide groove 13 is provided over the entire surface,
On both sides of the guide groove 13, a metric main scale 10a and an inch-based main scale 10b are engraved. Here, the main scale 10a is up to 150 mm and the main scale 10b is up to 6 inches. In addition, in FIGS. 1 and 2, the inch scale is omitted. On the other hand, the slider 2 is slidably fitted in the guide groove 13, and as shown in FIG. 5, a metric type vernier scale 20a is provided on one end of one side edge and one end of the other side edge is provided. Is an inch-type vernier scale 20b, and an inch-type offset vernier scale 20 with indications of +4 inches and +8 inches on one side.
b ₂ and 20 b ₃ are metric offset vernier scales 2 with indications of +10 cm and +20 cm on the other side edge.
0a ₂ and 20a ₃ are engraved. Here, the offset vernier scales 20a ₂ , 2
0a ₃ will be described by removing the slider 2 from the main scale 1 and then inserting the slider 2 into the main scale 1 with the longitudinal direction of the slider 2 being changed.
Offset vernier scales 20a ₂ and 20 provided on the
a ₃ and the main scale 10a of the main scale 1 are arranged in close proximity to each other, and when the jaws 11 and 22 are further opposed to the jaws 12 and 21, the jaws 11 and Outer length L measured with jaw 22
When 2 is 100 mm, as shown in FIG. 11, +10
When the offset vernier scale 20a ₂ is carved so that the 0 position of the offset vernier scale 20a ₂ of cm matches the 0 position of the main scale 10a of the main scale 1, when the outer length L3 is 200 mm, As shown in FIG. 12, the offset vernier scale 20a ₃ of +20 cm is set to 0.
The offset vernier scale 20a ₃ is engraved so that the position matches the 0 position of the main scale 10a. The same applies to the inch type offset vernier scales 20b ₂ and 20b ₃ . In addition, when the slider 2 is replaced in this way, the jaw 21 for measuring the outside of the slider 2 is used.
Will be used for measuring the inner length, and the jaw 22 for measuring the inner length will be used for measuring the outer length. Therefore, the lengths of the jaws 21 and 22 are the same, and
The lengths of 1 and 12 are also aligned with the jaws 21 and 22. As shown in FIGS. 6 and 7, the slider 2 has a guide 23 on its back side. And Joe 2
The rod-shaped depth bar 3 is slidably arranged in the guide groove 23 in which the width w ₂ on one end side where the Nos. 1 and 22 are provided is narrower than the width w ₁ of the other portion as shown in FIG. It is set up. In the figure, 24 is an operating portion for sliding operation of the slider 2, 25 is a set screw for stopping the slider 2 on the main scale 1, 26 and 27 are set screws for stopping the depth bar 3 with respect to the slider 2, 2 in Fig. 7
Reference numeral 8 is a protective plate for the depth bar 3, and 29 is a pressing spring for preventing the slider 2 from rattling. The depth bar 3 has a rod shape as shown in FIG.
Locking grooves 31a, 32a with indications of +10 cm and +20 cm added to the central side surface and one end side surface, +4 inch and +
It is provided with locking grooves 31b and 32b to which an 8-inch display is added, and has stop holes 33a and
33b, 34a, 34b, the other side being the first
As shown in FIG. 0, when the slider 2 is arranged in the guide groove 23, it may slip out to the left in FIG. 7 due to the relationship between the width of the guide groove 23 and the thickness of the depth bar 3. There is no such thing. In addition, each locking groove 31
a, 32a, 31b, 32b are engaged with the positioning metal fittings 35 provided on the slider 2, and the depth bar 3 is pulled out from the end portion of the slider 2 on the tail side, and any one of the locking grooves on the positioning metal fittings 35. 31a, 32a,
31b, when engaged in 32b, Depusuba 3 so protrusion length from the end of the tail side of the slider 2 _{(l 0} in FIG. 18) becomes 10 cm, 20 cm, 4 inches, an 8-inch ing. Next, a measuring method using this caliper will be described. now,
When measuring the outer length or the inner length R ₁ within 150 mm, as shown in FIG. 13, as with the conventional calipers, the jaws 11 and 21 or the jaws 12 and 22,
Measurement can be performed with the main scale 10a and the vernier scale 20a. When measuring the outer length or inner length R ₂ in the range of 100 mm to 350 mm, once pull out the slider 2 from the main scale 1, insert the slider 2 into the main scale 1 with the longitudinal direction of the slider 2 switched. It suffices to carry out measurement with the jaws 11 and 22 or the joists 12 and 21, and the value of R ₂ at this time is, as shown in FIGS. 14 and 15, the main scale 10a.
Between the offset vernier scale 20a ₂ and the offset value X ₂
Offset value of 10 cm or main scale 10
Measurement value X between a and the offset vernier scale 20a _3
The value is ₃ plus an offset value of 20 cm. In other words, simply flip the slider 2 and replace it
200mm + 1 despite being a 50mm caliper
It is possible to measure from 50mm to 350mm. When measuring an inch system, the main scale 10b, the vernier scale 20b, and the offset vernier scales 20b ₂ and 20b ₃ can be used. When the offset vernier scale 20b ₂ is used, the measured value is 4 inches. it may be added an 8-inch in measurement in the case of using the offset vernier scale 20b _3. On the other hand, when measuring the depth, the slider 2 is attached to the main scale 1 in a steady state, and the main scale 10a is used.
And 0 on the vernier scale 20a are aligned with each other, loosen the set screw 26 and pull out the depth bar 3 from the head side of one end of the caliper, and as shown in FIG. At the same time, the tip of the depth bar 3 is brought into contact with the bottom surface. Then, after fixing the depth bar 3 by tightening the set screw 26 so that the depth bar 3 does not shift with respect to the slider 2, the slider 2 is slid until the end face of the depth bar 3 is aligned with one end face of the caliper.
At this time, the value that can be read from the main scale 10a and the vernier scale 20a is the depth. As shown in FIG. 17, the depth can be measured with the slider 2 and the main scale 1. When the depth exceeds 150 mm, the set screw 27 is loosened and the depth bar 3 is pulled out from the tail side of the other end of the caliper, and the spring-loaded positioning metal fitting 35 provided on the slider 2 is locked to the depth bar 3. Engage with the groove 31a or the locking groove 32a, and set the set screw 27 into the stop hole 33.
a or 10 cm or 20 cm offset to the depth bar 3 by tightening it in the stopper hole 34a so that the end surface of the main scale 1 and the tip of the depth bar 3 come into contact with the measurement surface as shown in FIG. When the slider 2 is moved to, and the measurement values obtained by the main scale 10a and the vernier scale 20a are obtained, the value obtained by adding the offset value to the measurement value becomes the actual depth value. When performing inch type measurement, the above-mentioned locking grooves 31a, 3
2a in place of the locking grooves 31b, 32b, the stop holes 33a,
If the stop holes 33b and 34b are used instead of 34a, the depth can be obtained by adding an offset value of 4 inches or 8 inches to the measurement values of the main scale 10b and the vernier scale 20b. The step can be measured as shown in FIG. 19 or as shown in FIG. 18 by the same method as in the depth measurement.

【The invention's effect】

As described above, in the first feature of the present invention, when the slider is replaced with respect to the main body, the measured value is obtained by adding the offset value of the vernier scale used at that time to the value measured between the jaws. It is possible to measure the length up to the range where the offset value is added to the maximum value of the main scale engraved on the main scale, and the measurable range is very large. It is a thing. According to the second feature, the depth bar is previously projected by a required dimension with respect to the slider, so that the depth is increased to a range in which the required value is added as an offset value to the maximum value of the main scale of the main scale. It is possible to measure the step difference.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 and FIG. 4 are partial front views and side views of the same scale, and FIGS. Front view, side view and rear view of the same slider, FIG. 8 is an enlarged view of portion A in FIG. 7, FIG. 9 is a front view of the depth bar of the same, and FIG. 10 is enlarged portion B of FIG. FIGS. 11, 11 and 12 are explanatory views of offset vernier scales, FIGS. 13 to 15 are explanatory views of measurement of outer length or inner length, and FIGS. 16 to 18 are depths. Fig. 19 is an explanatory diagram of the measurement of the
FIG. 20 is a front view of a conventional example, and FIGS. 21 and 22 are explanatory views of depth and step measurement according to the same as above. 1 is a main scale, 2 is a slider, 3 is a depth bar, 10a is a main scale, 11, 12, 21, 22 is Jo, 20a vernier _scale, 20a _2, 20a ₃ shows the offset vernier scale.

Claims (2)

[Claims] 1. A caliper comprising a main scale having a main scale and a measuring jaw, and a slider having a vernier scale and a measuring jaw slidable with respect to the main scale, wherein the slider is a main body in the sliding direction. It is possible to replace the jaws on the main scale side with the jaws on the slider side at a specific distance, and another vernier scale having an offset value is provided. Vernier caliper. 2. A caliper comprising a main scale having a main scale and a measuring jaw, a slider having a vernier scale and a measuring jaw slidable with respect to the main scale, and a depth bar attached to the slider. In the above, the caliper is characterized in that the depth bar is slidable with respect to the slider in the same direction as the sliding direction of the slider with respect to the main body and is fixed to the slider at a specific position.