CN2893636Y - Durable antiwearing band tape - Google Patents

Abstract

The utility model relates to a durable and anti-wear retractable measuring tape, comprising a tape enclosure (1), a piece of tape (2) therein, a stopper (3) at the tape exit of the tape enclosure (1) and a wear rib (4). When the tape (2) is unreeled to the end, a curved tongue piece furnished on the head of the tape (2) will clip onto the front end of the stopper (3). The stopper (3) is provided with the wear rib (4) on the end facing the back of the tape (2), with the wear rib (4) embedded in the stopper (3). The wear rib (4) has a bottom edge with both sides bending upward and relatively curved at the end (41) as well, thereby forming a curved top paralleled to the bottom edge. In comparison with currently available technologies, the utility model has simplified the anti-wear structure by designing the tape-contacting part as a wear rib, which may be realized in real production by bending a piece of steel wire into certain shapes, practically a very simple procedure. Therefore, the measuring tape may be easily produced in batches in a low cost. Besides, the embedded fixture between the wear rib and the stopper helps to add the solidity.

Description

A kind of durable anti-wear tape measure

Technical field

The utility model relates to a kind of tape measure, particularly a kind of durable anti-wear tape measure.

Background technology

Existing tape measure includes chi box and interior chi band thereof, the chi tape wrapping is on the interior winding stand that wind spring arranged, the chi box of can be under the effect of wind spring after the chi band is drawn out withdrawing automatically with the revolution of winding stand, bending tongue piece until chi band head is stuck on the ruler box mouth, when reality is used, when chi is taken back the retraction box, under inertia effect, chi band tongue piece can cause certain impact to ruler box mouth, brings certain vibrations, and service time one, therefore long ruler box mouth also possible and damaged.For this reason; the tape measure that block is set or protects mouth at ruler box mouth is devised; thereby play the effect of protection ruler box mouth; and for reaching damping effect; improve the comfort level of using; block often adopts flexible material, but because the chi band metal material of rigidity (being generally steel matter) often, the chi band of thinner thickness can cause wearing and tearing to this block when flexible.For solving the wear problem of chi band to block; I previous utility model patent ZL03229642.8 number " a kind of durable anti-wear tape measure " (the notification number CN2606327Y) that proposes just provides a solution; block in this tape measure and chi band back side opposing end faces are provided with the wear plate of metal material; protect block by the abrasion-resistant metal sheet; and go out bent sheet on this wear plate and be embedded into aperture corresponding on the block, thereby make both connect one.The set-up mode that this wear plate only relies on its bent sheet to be embedded in block, when reality was used, chi was taken back volume vibrations at the end, and the wear plate slippage is come out, and is fixing not firm, and the structure of wear plate is comparatively complicated, is not easy to produce in batches.

Summary of the invention

Technical problem to be solved in the utility model is that the tape measure that a kind of abrasion-proof structure is simple more, fix the more firm ruler box mouth belt wear of anti-the chi is provided at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this durable anti-wear tape measure, include chi box and interior chi band thereof, the chi box is provided with a block at oral area, the chi band backrush at the end the bending tongue piece of its head be stuck in this block front end, it is characterized in that: described block and chi band back side opposing end faces are provided with the wear rib of metal material, and it is embedded in block.

Be the wearing and tearing to block of the both sides that further prevent the chi band, described wear rib can have a base, and both sides are bending up respectively, and bending relatively respectively endways, forms roughly parallel with base bending top, thereby the both sides of chi band are wrapped up.

Because of its base of wear rib is embedded in block, the bottom of chi band still might come in contact with the upper surface of block, therefore, described wear rib in its both sides up the middle part of bending part can have a step, terminal relative with the bending of homonymy respectively, the chi band is just just in time between the step and end of wear rib like this, avoided contacting of chi band and block completely, also prevented the vibrations of chi band in the time of quick backrush to a certain extent.

Production and processing for the benefit of reduces production costs, and described wear rib can be a steel wire bar.

Compared with prior art, advantage of the present utility model is: by the parts of contact chi band are designed to wear rib, make abrasion-proof structure simpler, in actual production, the steel wire that is bent into definite shape can be realized, and is very simple, be easy to produce in batches, cost is also lower, and wear rib and block be embedded fixing, more firm; Simultaneously, the design that wear rib is topped bar makes step and groove of terminal formation, and the chi band is held in it, has thoroughly prevented the wearing and tearing of chi band to block, has protected ruler box mouth more effectively.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the partial sectional view of the utility model embodiment.

Fig. 3 is the perspective exploded view of Fig. 2.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1～shown in Figure 3, this durable anti-wear tape measure includes chi box 1 and interior chi band 2 thereof, and chi box 1 is provided with a block 3 at oral area, chi band 2 backrush at the end the bending tongue piece of its head be stuck in this block 3 front ends;

Described block 3 and chi band 2 back side opposing end faces are provided with the wear rib 4 of metal material; and it is embedded in block 3; this wear rib 4 is a steel wire bar; it includes a base; both sides are bending up respectively; and 41 bendings relatively respectively endways; form roughly parallel bending top with the base; simultaneously; the middle part of bending part has a step 42 up in both sides, and relative with the bending terminal 41 of homonymy respectively, the end 41 of this wear rib 4 and step 42 form a groove that holds chi band 2 both sides; avoid chi band 2 and block 3 to come in contact, thereby protected 1 mouthful in chi box effectively.

Claims (4)

1, a kind of durable anti-wear tape measure, include chi box (1) and interior chi band (2) thereof, chi box (1) is provided with a block (3) at oral area, chi band (1) backrush at the end the bending tongue piece of its head be stuck in this block (3) front end, it is characterized in that: described block (3) and chi band (2) back side opposing end faces are provided with the wear rib (4) of metal material, and it is embedded in block (3).

2, durable anti-wear tape measure according to claim 1, it is characterized in that: described wear rib (4) has a base, and both sides are bending up respectively, and (41) bending relatively respectively endways, forms roughly parallel with base bending top.

3, durable anti-wear tape measure according to claim 2 is characterized in that: described wear rib (4) in its both sides up the middle part of bending part have a step (42), the bending end (41) with homonymy is relative respectively.

4, according to claim 2 or 3 described durable anti-wear tape measures, it is characterized in that: described wear rib (4) is a steel wire bar.

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