CN208795088U - A kind of tape measure - Google Patents

Abstract

A kind of tape measure, including shell, ruler item, for making ruler item, hook be pressed in the compressing member on measured piece surface, positioned at the tape measure Shackle on waist band or hand hidden discount handle of housing side；Tape measure Shackle on waist band or hand hidden discount handle are equipped with the card slot for placing compressing member, and the compressing member is made of the adhesive material of magnet or peelable reuse, and the ruler end is rivet hook or pull ring.The utility model is improved and is improved with the fixation to ruler item, reading mode by way of increasing compressing member to tape measure housing, with feasibility and has practicability, while being saved manpower, reduced measurement error, be easy to use and carry.

Description

A kind of tape measure

Technical field

The utility model belongs to geometric measurement field strain line class measurer, and in particular to tape measure.

Background technique

Common tape measure has two classes, a kind of fixing end band rivet hook class, and one kind is that the boxlike of pull ring class shakes tape measure.Boxlike shakes Tape measure is mostly stainless steel casing structure.Tape measure of the fixing end with rivet hook is mostly plastic shell structure.

Tape measure often uses measurement instrument, application method as live large-scale metrology are as follows:

1, ruler one is got out, the switch above ruler is in the closed position；

2, it turns on the switch, can arbitrarily pull ruler, stretch, shrink automatic；

3,0 scale of ruler pulls ruler to survey to tightly close to one end of measurement object, then keeping parallel with object The other end of object is measured, and is close to this one end, is closed a switch；

4, the scale in sight and ruler keeps vertical, reads data, record；

5, it turns on the switch, withdraws ruler, close a switch, replace.

Tape measure is as common measurer, and when using tape measure, the ruler deflection that happens occasionally, flexure cannot be protected with measurement object Maintain an equal level row, and hook cannot be close to measurement object one end, easily glance off.To avoid this situation, other people association is generally required It helps, labor intensive and easily generation zero drift fault.

Summary of the invention

The purpose of this utility model is to overcome the above-mentioned deficiencies of the prior art, and provide a kind of tape measure, saving manpower, Reduce measurement error, be easy to use and carry.

The technical solution of the utility model: including shell, ruler item is tested for being pressed in ruler item, ruler end The compressing member on part surface, positioned at the tape measure Shackle on waist band or hand hidden discount handle of housing side；Tape measure Shackle on waist band is hand dark Attacker's handle is equipped with the card slot for placing compressing member, and the compressing member is by magnet or the adhesive material system of peelable reuse At the ruler end is rivet hook or pull ring.

The card slot is stamped and formed out.

The card slot is square groove, is made of front, back, the left side, the right side, bottom surface.

The height of the compressing member is 2mm higher than the height of card slot.

The magnet is alnico magnet, ferrite lattice, samarium cobalt magnet or ndfeb magnet.

The adhesive material of the peelable reuse is plasticine, strong double-face adhesive tape or omnipotent clay.

The rivet hook is made of magnetic material.

The utility model has been carried out by way of increasing compressing member to tape measure housing with the fixation to ruler item, reading mode Kind and improvement with feasibility and has practicability.

The utility model solves one when using tape measure, and the tape measure rivet hook or pull ring of generation cannot be close to measure Object one end, cannot be with measurement object keeping parallelism, and there is a situation where blade deflections, flexure.The utility model tape measure is surveyed Amount can be more stable, reliable, and does not need an other people and assist, and greatly saves manpower.

Detailed description of the invention

Fig. 1 is this practical new one of structural schematic diagram.

Fig. 2 is the partial enlarged view of Fig. 1.

Fig. 3 is the side view of Fig. 2.

Fig. 4 is the second structural representation of the utility model.

Fig. 5 is the partial enlarged view of Fig. 4.

Fig. 6 is the side view of Fig. 5.

In figure, 1, fastening screw, 2, tape measure lanyard, 3, rivet hook, 4, switch, 5, tape measure Shackle on waist band, 6, shell, 7, Ruler item, 9, hand hidden discount handle, 10, Stainless Steel Shell, 11, location hole, 12, pull ring, 13, screw, 15, card slot, 17, axis, 19, straight pin.

Specific embodiment

It is for rivet links up with 3 structure tape measures by fixing end hook, shell 6 is fastened through fastening screw 1, ruler in Fig. 1,2,3 7 end of item is rivet hook 3, and there is tape measure lanyard 2 in 6 upper left corner of shell, and shell one side has switch 4, shell another side through spiral shell 13 dress tape measure Shackle on waist band 5 of nail, tape measure Shackle on waist band 5 are equipped with the card slot 15 for placing omnipotent clay or magnet, card slot 15 Size be 22*12*5mm, omnipotent clay or strong magnetic material material specification recommend to select 20*10*(3-5 in card slot) mm.

The tape measure is used for a long time, rivet, which links up with 3 thickness and gap, also has generation error may.Two amounts method when measurement: one Kind is hung on object, is fixed by the reaction force of power；A kind of top is on object, by top power, degree of freedom in location limitation compared with It is few.Rivet hook 3 loosens setting, when measuring, withstands on object, tape measure end rivet hook thickness is compensated out, but people To be not easy to grasp strength, it be easy to cause tape measure head compensation gap insufficient, the flexure of ruler item causes measurement error.Add in machinery In industrial and commercial bank's industry, measurement object is mostly steel component, therefore can take applied external force, solid by clay omnipotent in card slot or magnet The rivet hook 3 of 7 end of scale item, links up with 3 all standings for rivet and compresses, reduce its freedom degree, and be reliably fixed.

In Fig. 4,5,6, by taking the boxlike of pull ring class shakes tape measure as an example, shell 6 is disc, the positive Middle face of disc shell 6 There is switch 4,4 side of switch is equipped with axis 17, and hand 9 one end of hidden discount handle is loaded on axis 17, the circle of hand 9 other end of hidden discount handle Pin 19 is corresponding with the location hole 11 on switch 4, and 7 end of ruler item is pull ring 12, and hand hidden discount handle 9 is equipped with for placing The card slot 15 of omnipotent clay or magnet.

If can be affiliated to pull ring 12 without object when use, ruler item is easily glanced off, drops, is bent when measurement, thus Generate measurement error.Using clay omnipotent in card slot or the strong adsorption capacity of magnet itself, measurement object is fixed in ruler one end On, measurement error can be reduced.Omnipotent clay has good physical and chemical performance, reusable, leaves no trace, and viscosity is very By force, shape can random kneading, viscous force is stronger, may be used at metal, nonmetallic pastes use.

With the convenient measurement method obtained after the utility model: according to JJG741-2005 " standard steel tape calibrating rule Journey " require line width for 0.08-0.12mm, by Rayleigh criterion and half angular width formula of Airy disk it is found that under individual isolated state, Human eye can distinguish the displacement of 0.02mm away from the distinguishable groove for being separated by 0.06-0.12mm of 25cm at 15cm.

Select surface smoothness high when measuring large-sized iron structure, in card slot, seamed edge straightness is good, and specification is about The magnet of [20*10*(3-5) mm] can will be used as zero-bit at tape measure integer scale (such as 10mm), (distinguishable with visual observation 0.02mm displacement), press magnet at the half of graduation mark, by magnetic force compress blade, it is labor-saving simultaneously, using more It is convenient and true without misalignment.

Claims (7)

1. a kind of tape measure, it is characterised in that: including shell, ruler item, for making ruler item, ruler end be pressed in measured piece surface Compressing member, positioned at the tape measure Shackle on waist band or hand hidden discount handle of housing side；Tape measure Shackle on waist band or hand hidden discount handle are set There is the card slot for placing compressing member, the compressing member is made of the adhesive material of magnet or peelable reuse, the ruler End is that rivet is linked up with or pull ring.

2. tape measure according to claim 1, it is characterised in that: the card slot is stamped and formed out.

3. tape measure according to claim 1, it is characterised in that: the card slot be square groove, by front, back, the left side, The right side, bottom surface composition.

4. tape measure according to claim 1, it is characterised in that: the height of the compressing member is 2mm higher than the height of card slot.

5. tape measure according to claim 1, it is characterised in that: the magnet is alnico magnet, ferrite lattice, SmCo Magnet or ndfeb magnet.

6. tape measure according to claim 1, it is characterised in that: the adhesive material of the peelable reuse is rubber Mud, strong double-face adhesive tape or omnipotent clay.

7. tape measure according to claim 1, it is characterised in that: the rivet hook is made of magnetic material.