JPH06185904A - Vernier calipers - Google Patents

Abstract

PURPOSE:To provide a vernier calipers excellent in handling and reading performance in which effect of heat transmitted from hand on the measurement accuracy can be suppressed. CONSTITUTION:A tubular cover 31 having a grip part 32 is provided oppositely to the measuring jaws 12, 13 of a slider 11 while surrounding a main scale 1. A user can move the slider while gripping the grip part of the cover with one hand and the user can grip the cover even under a state where the slider is moved to the vicinity of effective measurement range with respect to the main scale. Since the main scale is not gripped directly with hand, effect of heat transmitted from the hand can be eliminated, contamination of the scale with oil or the like is prevented, and damage of electrode due to chips can also be prevented.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to calipers. More specifically, the present invention relates to a caliper in which a slider provided movably with respect to a main scale is provided with a cover having a grip portion.

[0002]

[Background Art] As a caliper structure, a vernier scale type caliper with a vernier scale formed on a slider is formed along with a main scale scale along the longitudinal direction of the main scale. Dial display type calipers converted to display dials, slider movement amount is converted into an electric signal by photoelectric, electrostatic capacitance type or magnetic type encoder, and movement amount based on that signal is digitally displayed There are known digital display type calipers and the like that are digitally displayed on a container.

Conventionally, in any caliper, in measuring, the object to be measured is grasped with one hand, the main scale is grasped with the other hand, and the slider is moved along the main scale while applying the thumb to the slider. The jaws for inside or outside provided on the main scale and the slider are brought into contact with each other between the measurement sites of the object to be measured. In this state, determine the dimensions of the DUT from the main scale and vernier scale for vernier scale calipers, the dial pointer for dial display calipers, and the digital display value for digital display calipers. You can

[0004]

However, in any of the conventional calipers, there is the following problem because the slider must be moved while holding the main scale with one hand during measurement. Since the main scale has a rectangular cross section so that the slider can be moved, it is difficult to hold the main scale with one hand. In particular, when the slider is moved to a position near the effective measurement range with respect to the main scale, there is almost no place to grip the main scale. For example, using a caliper with an effective measurement range of 10 cm, 1
When trying to measure the dimension near 0 cm, the slider is moved to the vicinity of the tip of the main scale, so that there is almost no place to grip the main scale. Moreover, since the measurement is performed while directly holding the main scale with one hand, the heat of the hand is transmitted to the main scale, and the influence of the heat is considered. In particular, in the case of a digital display type caliper, since the electrodes and the like are embedded along the longitudinal direction of the main scale, it is conceivable that the heat from the hand may affect the measurement accuracy. Further, in a factory or the like, an operator may perform measurement while gripping the main scale with a hand that is soiled with oil or the like. In such a case, in the vernier scale type caliper, the scale may be difficult to read due to oil or the like. Further, in the case of a digital display type caliper, if a worker performs measurement while gripping the main scale with a hand to which chips and the like are attached, the chips may damage the electrodes and the like.

The object of the present invention is to provide a caliper which eliminates all such drawbacks of the prior art, is excellent in operability and readability, and can reduce the influence of heat from the hand on the measurement accuracy. Especially.

[0006]

Therefore, a caliper of the present invention is provided with a main scale having one measuring jaw and a measuring scale which is provided so as to be movable in the longitudinal direction of the main scale and which is in contact with an object to be measured. In a caliper provided with a slider having the other measuring jaw to be contacted, a cylindrical cover which covers the circumference of the main scale and has a grip portion on the outer periphery is provided on the side opposite to the measuring jaw of the slider, Is characterized by.

[0007]

Since the cover, which covers the circumference of the main scale and has the grip portion, is provided on the side of the slider opposite to the measuring jaw, the operator can move the slider while holding the grip portion of the cover with one hand. Therefore, in addition to being easy to grip, the cover can be gripped even when the slider is moved to the vicinity of the effective measurement range with respect to the main scale, so that problems as in the prior art can be eliminated. Also, since it is not necessary to hold the main scale directly with the hand, there is no effect from the heat of the hand, the scale does not become difficult to read with oil etc., and the measurement is performed while holding the cover with the chips etc. It is possible to eliminate the problem that the chips damage the electrodes and the like even if the above is performed.

[0008]

Preferred embodiments of the caliper of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a caliper of this embodiment. In the figure, 1 is a main scale, 11 is a slider provided so as to be movable in the longitudinal direction of the main scale 1, and 31 is a cylindrical cover made of synthetic resin provided on the slider 11.

In the main scale 1, an inner measuring jaw 2 and an outer measuring jaw 3 are integrally formed on the upper and lower edges of the main scale 1 at the base end side, and the main scale with respect to the slider 11 is provided therebetween. Counterbore 4 for pulling out 1
Has been drilled. A guide groove 5 and a scale 6 are provided in parallel with each other along the longitudinal direction on the front surface side, and a rack 7 is attached along the lower edge of the guide groove 5.

The slider 11 has an inner measuring jaw 12 and an outer measuring jaw 12 which are brought into contact with the inner and outer measuring jaws 2 and 3 on the base end side and between the measuring portions of the object to be measured. The jaws 13 are integrally formed, and a clamp screw 14 for fixing the slider 11 to the main scale 1 and a pressing roller 15 are provided on the tip end side. Further, on the front surface side, there is a dial 18 for displaying the distance between the measuring jaws 2, 12, 3 and 13 from a pointer 16 to which rotation of a pinion (not shown) meshing with the rack 5 is transmitted and a scale plate 17. It is provided.

As shown in FIGS. 2 and 3, the cover 31 has a tip end side (measurement jaw 1) of the slider 11 when the slider 11 is moved to the base end side of the main scale 1.
(The side opposite to 2, 13) to the tip side of the main scale 1 and a rectangular tubular grip portion 32, and a rear surface of the slider 11 integrally provided on the proximal end side of the grip portion 32. And a fixing plate portion 33 fixed by a set screw (not shown). The grip 32 has corrugated irregularities 34 on its upper and lower surfaces.
Is formed along the longitudinal direction, and the pressure roller 15 is covered by a cover 3 at a portion corresponding to the pressure roller 15.
A notch 35 exposed from 1 is formed with a hole 36 at a portion corresponding to the clamp screw 14. Holes 37, into which the set screws are inserted, are formed at the four corners of the fixed plate portion 33.

Therefore, to attach the cover 31 to the slider 11, the tip side of the main scale 1 is inserted into the grip portion 32, the fixing plate portion 33 is applied to the back surface of the slider 11, and then the hole 37 is formed. The cover 31 can be attached to the slider 11 by tightening the set screw inserted from above to the slider 11. In this state, if the clamp screw 14 is inserted from the hole 36 and screwed into the slider 11, all can be assembled.

In the measurement, as shown in FIG. 1, the grip portion 32 of the cover 31 is held with one hand (usually the right hand), and the slider 11 of the main scale 1 is held while the belly of the thumb is pressed against the pressing roller 15. The measurement jaws 2, 12, 3 and 13 are moved along the longitudinal direction to abut on the measurement site of the object to be measured. When the slider 11 is moved, a pinion (not shown) meshing with the rack 7 is rotated, and the rotation is transmitted to the pointer 16. Therefore, if the value of the scale plate 17 indicated by the pointer 16 is read, the measurement is performed. Joe 2, 12, 3,
It is possible to measure the distance between 13, that is, the dimensions of the measurement site of the measured object.

Therefore, according to the present embodiment, the slider 11
Since the cover 31 that covers the periphery of the main scale 1 is attached to the side opposite to the measurement jaws 12 and 13, the operator can move the slider 11 while holding the grip 32 of the cover 31 with one hand. Therefore, in addition to being easy to grip, even when the slider 11 is moved to the vicinity of the effective measurement range with respect to the main scale 1, the grip portion 32 of the cover 31 can be gripped, so that the problem of the related art, that is, effective It is also possible to eliminate the problem that there is no gripped portion during measurement near the measurement range.

Further, since the corrugated irregularities 34 are formed in the grip portion 32 of the cover 31 along the longitudinal direction, the fingers of the hand holding the grip portion 32 conform to the irregularities and are easier to grip. It has the advantage that it is hard to slip even with oily hands. Furthermore, you don't have to hold the main scale 1 directly with your hand,
It is not affected by the heat of the hands, and the scale does not become dirty and difficult to read with oil.

Although the caliper of the present invention has been described with reference to the preferred embodiment, the present invention is not limited to this embodiment, and various improvements and design changes are made without departing from the gist of the present invention. Of course, it is possible.

For example, in the above embodiment, the length dimension of the cover 31 is adjusted so that the slider 11 moves toward the base end side of the main scale 1 (the measurement jaws 12,
The length from the side opposite to 13) to the tip side of the main scale 1 is covered, but the length dimension of the cover 31 is not limited to these and may be any length as long as it can be gripped by at least one hand. In addition, although the cover 31 has a cylindrical shape in which the front end is closed,
You may make it open a front-end | tip part. Furthermore, cover 3
The material of No. 1 is not limited to the synthetic resin described in the above embodiment, and may be any material as long as it is rigid enough not to be deformed even if it is gripped by a hand.

Although the dial-display calipers have been described in the above embodiments, the present invention is not limited to this, and a vernier-scale caliper or a digital display caliper may be used. With the former caliper, even if you work with oily hands, it will not be difficult to read dirt on the scale due to oil. Also, with the latter caliper, it is possible to eliminate the problem that the chips will damage the electrodes and the like even if the chips are attached to them by hand.

[0019]

As described above, according to the caliper of the present invention,
Since a cylindrical cover that covers the circumference of the main scale is provided on the opposite side of the slider from the measurement jaws, it has excellent operability and readability.
At the same time, the effect that heat from the hands can reduce the measurement accuracy can be expected.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a caliper of the present invention.

FIG. 2 is a perspective view showing a cover of the above embodiment.

FIG. 3 is a cross-sectional view showing a cover of the above embodiment.

[Explanation of symbols]

 1 main scale 2 inner measuring jaw 3 outer measuring jaw 11 slider 12 inner measuring jaw 13 outer measuring jaw 31 cover 32 grip portion

Claims (1)

[Claims] 1. A main scale having one measuring jaw, and a slider having a measuring jaw which is provided so as to be movable in the longitudinal direction of the main scale and which is brought into contact with an object to be measured together with the one measuring jaw. In the caliper provided, a caliper is provided on the side opposite to the measurement jaw of the slider, which is provided with a cylindrical cover which covers the periphery of the main scale and has a grip portion on the outer circumference.