KR200436213Y1 - combined T-square and vernier calipers - Google Patents

Abstract

The present invention relates to a tee combination vernier caliper, which is formed by injection molding a synthetic resin, the main body of a predetermined length marked on the scale, the head formed at right angles to one end of the main body, the outer diameter roughness formed on both ends of the head And an inner diameter of the head, the upper end of which a predetermined length is formed on the upper surface of the head protruding at right angles to the main body, and formed by injection molding a synthetic resin, and the coupling portion into which the main body of the mother is fitted is formed. Since the outer diameter jaw and the inner diameter jaw formed on both sides are formed, it is possible to manufacture at a light weight and low cost, and can be used as a caliper as well as a tee-shape, thereby increasing convenience of use.

Caliper, T-Chair

Description

T-square combined vernier calipers {combined T-square and vernier calipers}

1 is a view showing a conventional vernier caliper.

Figure 2 is a plan perspective view of the tee combination vernier caliper according to the present invention.

Figure 3 is a rear perspective view of the tee combination vernier caliper according to the present invention.

Figure 4 is an exploded perspective view of the tee combination vernier caliper according to the present invention.

Figure 5 is a "I-I" line cross-sectional view of the tee combination vernier caliper according to the present invention.

Figure 6 and Figure 7 is a perspective view showing the state of use of the tee-shaped dual vernier caliper according to the present invention.

Explanation of symbols on the main parts of the drawings

2: mother 4: son

22: body 24: head

40: coupling portion 42,241: internal bore

44,242: outer diameter joo 225: arc end

240: extension portion 243: upper step

244: lower step 402: recessed groove

The present invention relates to a tee-shaped vernier caliper, and more specifically, made of synthetic resin can reduce the manufacturing cost and lightweight, and also can be used as a drafting tee (T) It is about a vernier caliper.

In general, vernier calipers are used to precisely measure the outside diameter, inside diameter, thickness and depth of grooves.

As shown in FIG. 1, the conventional vernier caliper A 'is composed of a mother 400' and an son 500 'having an outer diameter jaw 200' and an inner diameter jaw 300 'formed at one end thereof. It is a tool that can measure precisely up to mm.

Conventional vernier calipers are mainly made of metal, but there is a problem that the weight is heavy and expensive.

In addition, one of the tools necessary for drafting is the T-letter.

Therefore, in the past, the vernier caliper is used for numerical measurement, and since the tee is used for illustration, the vernier caliper should be provided with both the vernier caliper and the tee.

The present invention was devised to solve the above problems of the prior art, it is possible to produce a lightweight and low cost by forming a synthetic resin, and to improve the structure can also be used for tee-shaped vernier vernier caliper The purpose is to provide.

The object of the present invention described above,

It is formed by injection molding a synthetic resin, consisting of a main body of a predetermined length marked with a scale, a head formed at right angles at one end of the main body, and an outer diameter jaw and an inner diameter jaw formed at both ends of the head, and fixed on the upper surface of the head The upper end of the length is formed by protruding the mother formed in a perpendicular direction with respect to the main body, the synthetic resin injection molding, the coupling portion is formed to be fitted to the main body of the mother, including the outer diameter jaw and inner diameter jaw formed on both sides It can be achieved by a tee combination vernier caliper, characterized in that made.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Attached Figure 2 is a plan perspective view of the tee combination vernier caliper according to the present invention, Figure 3 is a rear perspective view of the tee combination vernier caliper according to the present invention.

As shown in Fig. 2 and 3, the tee combination vernier caliper (A) according to the present invention is formed by injection molding a synthetic resin, the main body 22 and the main body 22 of a predetermined length marked graduation The head 24 is formed at one end of the head 24 at right angles, the outer jaw 242 and the inner jaw 241 formed at both ends of the head 24, the upper step of a predetermined length on the upper surface of the head 24 (243) is formed by injection molding the mother (2) protruding in a direction perpendicular to the main body 22, the synthetic resin, the coupling portion 40 to which the main body 22 of the mother (2) is fitted It is formed, and consists of the sonja 4, the outer jaw 44 and the inner jaw 42 is formed on both sides.

The mother 2 and son 4 are formed by injection molding a synthetic resin.

Since the present invention is a tool for industrial use, it is preferable to use an engineering plastic known to have the most excellent properties in consideration of the rigidity, elasticity, impact resistance, abrasion resistance, heat resistance, cold resistance, chemical resistance, and electrical insulation of materials.

ENGINEERING PLASTIC is a high-performance resin with a polymer structure that is stronger than steel, richer in malleability than aluminum, and stronger in chemical resistance than gold and silver.

Engineering plastics are classified into five types: polyamide, polyacetyl, polycarbonate, polyester resin, and polyphenylene oxide. Specific brand names include monomer cast nylon, acetal, teflon, PTFE, Polyurethane, polymethyl methacrylate, polyethylene terephthalate, polyimide, polycarbonate, polybutylene terephthalate, polyether ether ketone ether ether ketone), and the like.

As shown in FIG. 2, an upper stepped portion 243 of a predetermined length is formed to protrude in a direction perpendicular to the main body 22 on an upper surface of the head 24 of the mother unit 2.

The head 24 of the mother 2 is formed to be perpendicular to the body 22, more precisely, the extension portion 240 is formed at a portion where the inner light roughness 241 of the head 24 is formed, The main body 22 and the head 24 are formed in a tee (T) shape.

The upper stepped portion 243 is formed on the upper surface of the head 24 to be parallel to the head 24, that is, formed to protrude in a direction perpendicular to the main body 22, so that the upper stepped portion 243 is the drawing plate 100. It is to be fixed to the end of the).

In addition, as shown in FIG. 3, the lower stepped portion 244 is formed on the lower surface of the head 24 of the mother unit 2.

The lower step 244 is formed to be perpendicular to the main body 22, and should be formed to a thickness greater than the thickness of the son 4 (4).

This is because the lower step 244 may be caught and fixed to the end of the drawing plate 100 only by protruding more than the son 4.

Accordingly, the upper step 243 and the lower step 244 may be formed on both the upper and lower surfaces of the head 24 or on only one surface thereof.

4 is an exploded perspective view of the tee-shaped vernier caliper according to the present invention, and FIG. 5 is a sectional view taken along line "I-I" of the tee-shaped vernier caliper according to the present invention.

4 and 5, an arc-shaped end portion 225 is formed at both ends of the main body 22 of the mother unit 2, and the arc-shaped end portion (225) is formed on the inner wall of the engaging portion 40 of the son 4. A recess groove 402 is formed in which the 225 is inscribed.

The arc-shaped end portion 225 and the concave groove 402 may be formed by forming both side ends of the main body 22 in an arc shape to reinforce bending strength to prevent deformation.

In addition, the concave groove 402 is also formed in an arc shape so that the arc-shaped end portion 225 can be inscribed, so that the main body 22 inserted into the concave groove 402 can slide smoothly forward and backward.

The appropriate radius r of the arc-shaped end 225 is 1.5 to 1.7 mm.

That is, as shown in Table 1 below, when the radius of the arc-shaped end portion 225 is 1.5 mm or less, there is a disadvantage that the mother 2 is easily separated from the engaging portion 40 of the son 4 in the sliding process. .

In addition, when the radius of the arc-shaped end portion 225 is 1.7 mm or more, the friction force with the son 4 is increased when the mother 2 is sliding, so that the sliding of the main body 22 is not smooth, and the bending strength is lowered, thereby easily deforming. There is a concern.

                   Radius (r) size of arc end and recess       1.5 mm or less       1.5-1.7 mm      1.7 mm or more   characteristic The mother is easily disengaged from the mating part of the son when sliding.  The sliding of the mother is smooth and the bonding state is firmly maintained. The coupling state of the mother and son is modified so that the sliding of the mother is not smooth.

Hereinafter, the use example of the present invention will be described.

The present invention is to be used in the same way as the known vernier caliper.

That is, by pushing the son 4 back and forth while holding the main body 22 of the mother 2, the outer jaw 242,44 or inner jaws 241,42 are in close contact with the inside and outside of the object to measure the numerical value. Done.

In addition, the present invention can also be used as a tee, as shown in Figures 6 and 7.

6 and 7 are perspective views showing a state of use of the tee-shaped vernier caliper according to the present invention.

As shown in FIG. 6, the upper jaw 243 of the head 24 is fixed over the end of the drawing plate 100 so that a straight line can be used as a tee.

In addition, as shown in FIG. 7, the lower step 244 of the head 24 may be fixed over the end of the drawing plate 100 and then used as a tee.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such changes and modifications being attached It is obvious that the claims belong to the claims.

As described above, according to the present invention, it can be manufactured at a light weight and low cost by molding from synthetic resin, and can be used not only as a vernier caliper but also as a tee (T), thereby increasing convenience of use. .

Claims (8)

delete It is formed by injection molding a synthetic resin, the main body 22 of a predetermined length marked with a scale, the head 24 formed at right angles to one end of the main body 22, and the outer diameter roughness formed at both ends of the head 24 ( A mother (2) consisting of a 242 and an inner diameter jaw (241), the upper end (243) of a predetermined length protruding at a right angle with respect to the main body (22) on the upper surface of the head (24); Is formed by injection molding the synthetic resin, the coupling portion 40 is formed to be fitted to the main body 22 of the mother (2), son (4) having an outer diameter jaw 44 and the inner diameter jaw (42) formed on both sides; Including, An arc-shaped end portion 225 is formed at both ends of the main body 22 of the mother child 2, and an indentation groove 402 in which the arc-shaped end portion 225 is inscribed on the inner wall of the coupling portion 40 of the son 4. Tee-shaped combined vernier caliper, characterized in that formed. The method of claim 2, The arc-shaped end portion 225 and the concave groove 402 has a cross-sectional arc-shaped vernier caliper, characterized in that the cross-section. The method of claim 2, The mother part 2 has an extension portion 240 formed at a portion where the inner light roughness 42 of the head 24 is formed, so that the main body 22 and the head 24 form a tee (T) shape. A tee-shaped combined use vernier caliper. The method according to claim 2 or 4, The lower step 244 is formed on the lower surface of the head 24 of the mother 2 so as to be perpendicular to the main body 22, and the lower step 244 is formed to protrude more than the son 4. Tee ruler vernier caliper. The method of claim 5, Tee-shaped vernier caliper, characterized in that the radius of the arc 225 and the recess groove 402 is 1.5 ~ 1.7 mm. The method of claim 2, The synthetic resin tee caliber vernier caliper, characterized in that the engineering plastics. The method of claim 7, wherein The engineering plastics, monomer cast nylon (MONOMER CAST NYLON), acetal (ACETAL), Teflon (PTFE), polyurethane (POLYURETHANE), polymethyl methacrylate (polymethyl methacrylate), polyethylene terephthalate (polyethyleneterephthalate), polyimide ( A tee-shaped dual vernier caliper, characterized in that any one selected from polyimide, polycarbonate, polybutylene terephthalate, poly ether ether ketone.

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