CN2929646Y

CN2929646Y - Automatic positioning band tape for band tape

Info

Publication number: CN2929646Y
Application number: CN 200620103785
Authority: CN
Inventors: 周晓刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-08-01
Anticipated expiration: 2016-05-19

Abstract

A ruler with a self locating line tape comprises a ruler box (1), a ruler belt (2) equipped inside the ruler box and is rolled on a hub, a stop block (3), a pre tightening twisted spring (4), a button equipped for a passing ruler box (1), wherein the stop block (3) and the pre tightening twisted spring (4) are equipped on the position near a ruler box port (11) inside the ruler box (1), the twisted spring (4) makes a head portion (31) of the stop block (3) deflecting continuously towards the ruler belt (2) until colliding with the ruler belt (2), the inner end of the button is collided with the stop block (3), and the button drives the stop block (3) to deviate the ruler belt (2) when being pressed. Compared with the prior arts, the utility model makes the stop block deviate and brakes the ruler belt with frictions by the twisted spring's effect, makes use of the own feature of the twisted spring to avoid the deficit of easy dislocation of the existing spring during the real operation of the line tape. The operation of this kind of twisted spring is more flexible, which can ensure the trend of the head portion's continuous deviation towards the ruler belt with a long using life.

Description

A kind of chi band is the tape measure of location automatically

Technical field

The utility model relates to a kind of tape measure, relates in particular to a kind of chi band tape measure of location automatically.

Background technology

Tape measure is little because of volume, and is easy to carry, is widely used, generally comprises chi box and Qi Nei and is wound on chi band on the wheel hub, can bounce back automatically under the restoring force effect of this chi band torsion spring in wheel hub.Traditional tape measure is generally gone back the chi box and is provided with the device that can make the chi band brake, utilizes the drag knob that is arranged on the chi box outside directly or by an arrestment mechanism to make the chi band brake and the lock-bit of pulling out, and will make chi take back volume, then discharges drag knob.This tape measure is pulled out the back and drag knob when not pressing as yet at the chi band, the restoring force of torsion spring will directly act on the staff by the chi band, hand one pine also can be caused the automatic retraction of chi band unless you give your whole attention to it, particularly pull out when longer at the chi band, the retraction force of chi band is very powerful, even can injure finger, because retraction speed has very soon, the user also is difficult to be able to do in time cushion by pushing drag knob.

For this reason, utility model patent ZL200420119196.8 number " a kind of chi band is the tape measure of location automatically " (notification number is CN2767951Y) of my previous proposition, be exactly at this problem, proposed to need not the tape measure that operation bidirectional can be located automatically after a kind of chi band is pulled out.It includes the chi box and sets within it and be wound on chi band on the wheel hub, scotch, spring and the button that runs through the setting of chi box, wherein scotch is positioned on the chi band, be articulated in the position of contiguous ruler box mouth in the chi box, spring is arranged on the position of contiguous ruler box mouth in the chi box, and the head that makes scotch is kept towards the chi belt deflector until inconsistent with the chi band, and the medial extremity of button and scotch offset, and this button drives scotch and departs from the chi band when being pressed, spring adopts simple stage clip, the front side of lower end and scotch offsets, and the madial wall of upper end and chi box offsets.When work, stage clip is to make the head of scotch keep the key that makes the stop of chi band towards the chi band, and stage clip is arranged between chi box and the scotch, in actual mechanical process, stage clip needs frequent be compressed and reset, and speed is too fast sometimes, and stage clip misplaces easily, cause scotch not have external force and can't reset on the chi band, make tape measure lose the function of automatic stop chi band then; Simultaneously, in operating process, stage clip needs frequent being compressed, and in the course of time, stage clip follows the string easily and causes the pretightning force deficiency, and serviceable life is shorter, therefore needs further improvement.

Summary of the invention

Technical problem to be solved in the utility model is to provide the running of a kind of spring can guarantee the resetting of scotch, chi band that serviceable life is the long tape measure of location automatically more flexibly 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 chi band is the tape measure of location automatically, include the chi box and set within it and be wound on chi band on the wheel hub, scotch, spring, run through the button that the chi box is provided with, wherein, described scotch is scratched the position that is connected on contiguous ruler box mouth in the chi box, and be positioned on the chi band, described spring is arranged on the position of contiguous ruler box mouth in the chi box, and the head that makes described scotch is kept towards the chi belt deflector until inconsistent with the chi band, and the medial extremity of button and described scotch offset, and this button drives described scotch and departs from the chi band when being pressed, it is characterized in that: described spring adopts the torsion spring of pretension.

For ease of scotch deflection, and can guarantee the effect of torsion spring to scotch, described chi box can be provided with the mandrel that runs through the scotch afterbody in the position of corresponding scotch afterbody, and described torsion spring promptly is located on this mandrel, the relative chi box of one end is spacing, and the other end is against on the side of scotch, and this mandrel has just served as the rotating shaft of scotch and torsion spring simultaneously, project organization compactness, simple is easy to produce assembling.

Described button can be arranged on the scotch, and the middle part of this button is articulated on the chi box, the front portion of button have be J-shaped to lower extension, the end of this J-shaped extension is against described scotch rear side; Like this, when the marquis portion of button is pressed, scotch will be before being driven to deflection and leave and the chi band forms the gap.Have the trend that resets because scotch is under the effect of spring all the time, thus button also can automatically reset, but in order to make action more reliable, also can additionally be provided with back-moving spring under the described button.

Described button also can be arranged under the chi band, and the middle part of described scotch then has the side direction male part, and described button has a upper convex portion, walks around described chi band and offsets with the side direction male part of described scotch;

In order to make button have better deflection trend when driving scotch, the surface of contact between described button upper convex portion and the described scotch side direction male part is preferably an inclined-plane.

Certainly, more convenient in order to operate, above-mentioned two types of buttons also can be provided with simultaneously.

Compared with prior art, advantage of the present utility model is: the torsion spring that spring is designed to pretension, the friction catch chi band by under the effect of torsion spring, making scotch deflection, utilize the characteristics of torsion spring itself, make tape measure when practical operation, thoroughly avoided original stage clip drawback of dislocation easily, the running of this torsion spring is more flexible, thereby the head that can guarantee scotch is in the trend towards the chi band all the time, and serviceable life is longer; The utility model structural design compactness, simple is highly susceptible to producing assembling.

Description of drawings

Fig. 1 is the cross-sectional schematic of the utility model embodiment;

The structural representation of Fig. 2 half of chi box and first button for the utility model embodiment removes;

Fig. 3 is the three-dimensional exploded view of the utility model embodiment.

Embodiment

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

As Fig. 1～shown in Figure 3, this chi band is the tape measure of location automatically, includes chi box 1 and sets within it and be wound on chi band 2, scotch 3, spring on the wheel hub, run through the button that chi box 1 is provided with, and this spring adopts the torsion spring 4 of pretension;

Wherein, described chi box 1 is provided with the mandrel 12 that runs through scotch 3 afterbodys 31 in the position of corresponding scotch 3 afterbodys 31, makes this scotch 3 scratch the position that is connected on contiguous ruler box mouth 11 in the chi box 1, and is positioned on the chi band 2;

And described torsion spring 4 also is arranged on the position of contiguous ruler box mouth 11 in the chi box 1, and be located on this mandrel 12, these torsion spring 4 one ends 41 relative chi boxes 1 are spacing, the other end 42 is against on the side 33 of scotch 3, thereby the head 31 that makes described scotch 3 is kept towards 2 deflections of chi band until inconsistent with chi band 2, and the medial extremity of button and scotch 3 offset, and this button drives scotch 3 and departs from chi band 2 when being pressed;

In the present embodiment, an end 41 relative chi box 1 limit methods of this torsion spring 4 are as follows: the inwall of chi box 1 is provided with protruding wall 13, thereby and an end 41 of this torsion spring 4 is against promptly on this protruding wall 13 relatively that chi box 1 is spacing;

And, in the present embodiment, described button is provided with two, i.e. first button 5 and second button 6, wherein, first button 5 is arranged on the scotch 3, and the middle part 51 of this first button 5 is articulated on the chi box 1, the front portion of first button 5 have be J-shaped to lower extension 52, the end of this J-shaped extension 52 is against described scotch 3 rear sides;

And second button 6 is arranged under the chi band 2, the middle part of described scotch 3 then has side direction male part 34, second button 6 has a upper convex portion 61, walk around described chi band 2 and offset with the side direction male part 34 of described scotch 3, the surface of contact between second button, 6 upper convex portion 61 and the scotch 3 side direction male part 34 is an inclined-plane.

Claims

1, a kind of chi band is the tape measure of location automatically, include chi box (1) and set within it and be wound on chi band (2) on the wheel hub, scotch (3), spring, run through the button that chi box (1) is provided with, wherein, described scotch (3) is scratched the position that is connected on contiguous ruler box mouth (11) in the chi box (1), and be positioned on the chi band (2), described spring is arranged on the position of contiguous ruler box mouth (11) in the chi box (1), and the head (31) that makes described scotch (3) is kept towards chi band (2) deflection until inconsistent with chi band (2), and the medial extremity of button and described scotch (3) offset, and this button drives described scotch (3) and departs from chi band (2) when being pressed, it is characterized in that: described spring adopts the torsion spring (4) of pretension.

2, the tape measure of the automatic location of chi band according to claim 1, it is characterized in that: described chi box (1) is provided with the mandrel (12) that runs through scotch (3) afterbody (31) in the position of corresponding scotch (3) afterbody (31), and described torsion spring (4) promptly is located on this mandrel (12), chi box (1) is spacing relatively for one end (41), and the other end (42) is against on the side (33) of scotch (3).

3, the tape measure of the automatic location of chi band according to claim 1 and 2, it is characterized in that: described button is for being arranged on first button (5) on the scotch (3), the middle part (51) of this first button (5) is articulated on the chi box (1), the front portion of first button (5) have be J-shaped to lower extension (52), the end of this J-shaped extension (52) is against described scotch (3) rear side.

4, the tape measure of the automatic location of chi band according to claim 1 and 2, it is characterized in that: described button is for being arranged on second button (6) under the chi band (2), the middle part of described scotch (3) then has side direction male part (34), described second button (6) has a upper convex portion (61), walks around described chi band (2) and offsets with the side direction male part (34) of described scotch (3).

5, the tape measure of the automatic location of chi band according to claim 4, it is characterized in that: the surface of contact between described second button (6) upper convex portion (61) and described scotch (3) the side direction male part (34) is an inclined-plane.