CN203489801U - Reading-facilitated calipers - Google Patents

Abstract

Reading-facilitated calipers belongs to the field of measuring tools. The reading-facilitated calipers comprise a main ruler (1) and a vernier (2). A zero scale line on the vernier (2) is arranged at the rightmost end. Twenty-one scale lines are arranged leftwards from the zero scale line. Twenty scales are formed uniformly and separately. The length of each scale is 1.05mm. A convex lens (4) is arranged on the vernier (2). The reading-facilitated calipers are characterized in that: twenty-one scale lines are leftwards arranged from the zero scale line on the main ruler (1); the main ruler (1) is superposed with the zero scale line on the vernier (2); a dovetail (3) is arranged below the front surface of the vernier (2); and the convex lens (4) is slidably arranged in the dovetail (3). Through increasing the scale on the vernier to 1.05mm, number reading of the user in use is facilitated. The reading-facilitated calipers more accord with number reading habit for the prior-art calipers and simultaneously have higher measurement precision.

Description

Just read type vernier caliper

Technical field

Just read type vernier caliper, belong to survey instrument field.Be specifically related to the vernier caliper that a kind of scale division value is 0.05mm.

Background technology

Vernier caliper is conventional dimensional measuring instrument, all indicates reading groove on the main scale of vernier caliper and vernier scale.In the prior art, scale division value is that the minimum calibration of 0.05mm vernier caliper main scale is 1mm, and on vernier scale, the overall length of 20 calibration equals 19mm, and on vernier scale, the length of a calibration is 0.95mm.

Application (patent) number is that 201210080646.6 patent has been announced a kind of novel vernier caliper, on its vernier scale, be provided with 20 calibration, each calibration length is 1.05mm, the ruling span of the vernier caliper of this design form on vernier scale is relatively large, on reading, carried out useful improvement facilitating, but after vernier caliper two measuring claws of this design close up, millimeter decimal reading benchmark " 0 " groove on vernier scale overlaps with the 21mm groove of main scale, this design proposal has changed the use habit of vernier caliper in prior art, thereby brought inconvenience to user.

While reading the decimal place of millimeter in existing vernier caliper, in order to carry out more accurately reading, also there is such design: on vernier scale, fix convex lens that play amplification.But in current design, convex lens are generally fixed on vernier scale, because convex lens have outer thin interior thick structure, so the amplification degree of the part that middle thicker part is thinner with edge when amplifying is not identical, so such design is when amplifying reading, the amplification effect of the position in the middle of only having is comparatively obvious, and the amplification effect of edge is far short of what is expected, is unfavorable for equally reading.

Summary of the invention

The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of scale length by vernier scale to increase, facilitate reading, meet existing vernier caliper reading custom, and be provided with movably convex lens, guaranteed that when the reading optimum position on vernier scale has the type of just the reading vernier caliper of best amplification effect.

The utility model solves the technical scheme that its technical matters adopts: this just reads type vernier caliper, comprise main scale and vernier scale, " 0 " scale mark on vernier scale is arranged on low order end, from " 0 " scale mark, be provided with 21 scale marks left, evenly interval forms 20 scales, the length of each scale is 1.05mm, on vernier scale, be provided with convex lens, it is characterized in that: " 0 " scale mark on described main scale 1 is provided with 21 scale marks left, " 0 " scale mark of main scale and vernier scale overlaps, below vernier scale front, be provided with dovetail groove, convex lens are slidably arranged in dovetail groove.

" 0 " scale mark of described vernier scale has marked numeral " 25 ", " 50 ", " 75 ", " 100 " successively at interval of 5 scales left.

Described convex lens below is provided with the dovetail shaped projection coordinating with dovetail groove.

When using vernier caliper of the present utility model to measure, first read the integer mm on the indicated main scale of " 0 " scale mark on vernier scale, then judge on vernier scale with main scale on the position of the scale mark that coincides, then read corresponding mm decimal digits, be added with the reading of main scale, draw precise length.

Compared with prior art, had beneficial effect of the present utility model is:

Just the type vernier caliper of reading of the present utility model is increased to 1.05mm by the length of the scale on vernier scale, can person easy to use carry out in use reading, the reading custom that more meets vernier caliper in prior art, there is higher measuring accuracy, there is simple to operate, dependable performance simultaneously.

On vernier scale, be provided with dovetail groove, convex lens are slidably installed in dovetail groove, can make the best position of amplification effect on convex lens be positioned at the optimum position on vernier scale by mobile convex lens, guaranteed the accurate of reading.

Accompanying drawing explanation

Fig. 1 is for just reading type vernier caliper structural representation.

Fig. 2 is A-A cut-open view in Fig. 1.

Wherein: 1, main scale 2, vernier scale 3, dovetail groove 4, convex lens.

Embodiment

Fig. 1 ~ 2nd, most preferred embodiment of the present utility model, is described further below in conjunction with 1 ~ 2 pair of the utility model of accompanying drawing.

As shown in Figure 1, the type vernier caliper of just reading of the present utility model comprises main scale 1 and vernier scale 2.On vernier scale 2, be evenly provided with 21 scale marks, interval forms 20 scales, and the length of each scale is 1.05mm, can obtain thus, and all scale summations on vernier scale 2 are 21mm.On vernier scale 2, the scale of low order end indicates digital " 0 ", and right-to-left marks the figure notation of numeral " 25 ", " 50 ", " 75 ", " 100 " successively at interval of 5 scales.

" 0 " scale mark on main scale 1 is provided with a plurality of scale marks to the right, from " 0 " scale mark, at interval of 10 scale marks, numeral " 1 ", " 2 ", " 3 ", " 4 ", " 5 " have been marked successively to the right ... figure notation, the quantity of figure notation is corresponding with the range of vernier caliper." 0 " scale mark of main scale 1 of take continues to be provided with 21 scale marks left as starting point, and interval forms 21 scales.Graduated length on main scale 1 is 1mm.After vernier scale 2 and main scale 1 close up, the digital " 0 " scale mark on vernier scale 2 overlaps with " 0 " scale mark on main scale 1, and the corresponding scale mark of the numeral on vernier scale 2 " 100 " overlaps with the 21st scale mark in " 0 " scale mark left side on main scale 1.

As shown in Figure 1 and 2, below the front of vernier scale 2, offer the dovetail groove 3 of indent, at dovetail groove 3, convex lens 4 are installed, the below of convex lens 4 is provided with the dovetail shaped projection coordinating with dovetail groove 3, make the convex lens 4 can be in the interior horizontal slip of dovetail groove 3, thereby when measuring, can to the position of convex lens 4, regulate as required, make the best position of amplification effect in convex lens 4 can move to optimum position on vernier scale 2, thereby guaranteed the accuracy of reading.

Concrete measuring process is as follows: when using vernier caliper of the present utility model to measure, first read the integer millimeter on the indicated main scale 1 of " 0 " scale mark on vernier scale 2, then judge on vernier scale 2 with main scale 1 on the position of the scale mark that coincides, then read corresponding millimeter decimal digits, be added with the reading of main scale 1, draw precise length.

The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.

Claims (1)

1. just read type vernier caliper, comprise main scale (1) and vernier scale (2), " 0 " scale mark on vernier scale (2) is arranged on low order end, from " 0 " scale mark, be provided with 21 scale marks left, evenly interval forms 20 scales, the length of each scale is 1.05mm, on vernier scale (2), be provided with convex lens (4), it is characterized in that: " 0 " scale mark on described main scale (1) is provided with 21 scale marks left, " 0 " scale mark of described vernier scale (2) has marked numeral " 25 " successively at interval of 5 scales left, " 50 ", " 75 ", " 100 ", after vernier scale (2) and main scale (1) close up, digital " 0 " scale mark on vernier scale (2) overlaps with " 0 " scale mark on main scale 1, the 21st scale mark of the corresponding scale mark of numeral " 100 " on vernier scale (2) and main scale (1) upper " 0 " scale mark left side overlaps, in the positive below of vernier scale (2), be provided with dovetail groove (3), convex lens (4) are slidably arranged in dovetail groove (3), and described convex lens (4) below is provided with the dovetail shaped projection coordinating with dovetail groove (3).

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