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Measuring tape stable in tape retraction

A stable, tape measure technology, applied in the direction of a bendable ruler, etc., can solve the problems of broken hooks, beaters, and twisted and deformed tapes, achieving the effects of low cost, small space required, and simple structure

Inactive Publication Date: 2017-05-31
叶小文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems that the existing measuring tape for recycling the tape is easy to distort and deform the tape, the hook is broken, and the problem is to beat hands, and to provide a tape and the hook that can stably recycle the tape without hurting the hands. tape measure

Method used

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  • Measuring tape stable in tape retraction
  • Measuring tape stable in tape retraction
  • Measuring tape stable in tape retraction

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] figure 1 It is an embodiment: the mandrel 4 and the shaft hole 8 are made on the shell 1, the pallet fork 9 with the shaft is inserted into the shaft hole 8, the ruler tape box 2 and the escape wheel 10 are integrally formed, and the ruler tape box 2 outer disc ruler tape 6. The inner coil spring 3 and the mandrel 4 are fixed and cannot rotate. One end of the coil spring 3 hooks the tape 6, and the other end is fixed on the mandrel 4. The head of the tape is connected with the hook 5. When the tape is pulled out, the coil spring Tighten to give power to recovery; there is a control button 7 on the shell 1, the pallet fork 9 cannot swing when the control button 7 is pressed, that is, the escape wheel 10 is locked, and the ruler belt linked with it is also locked and cannot be pulled Stretching and retracting; there is also a button 7' ​​on the shell 1, press the button 7' ​​to completely push the pallet fork 9 away from the escape wheel 10 so that the two do not mesh, at...

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PUM

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Abstract

A measuring tape stable in tape retraction comprises a shell, a tape case and an escapement control mechanism. The shell is at least provided with an escapement fork capable of swinging and a fixed mandrel; the tape case sleeves the mandrel and is capable of rotating around the mandrel, and rotation of the tape case is in linkage with rotation of an escapement wheel; the escapement wheel and the escapement fork form the escapement control mechanism. The measuring tape is simple in structure and stable and controllable in tape retraction speed. A tape hook on the head portion of the tape is slightly impacted in tape retraction, so that the tape hook is protected, and hands of a user are protected from being hurt by the tape and the tape hook.

Description

technical field [0001] The invention relates to a measuring tape which utilizes coil spring force to recover a tape, which belongs to the improvement of a measuring tool. Background technique [0002] At present, there are many kinds of tape measures that utilize the force of the coil spring to recover the tape on the market. The common structure is: a mandrel that cannot be rotated is fixed on the outer shell, and the tape box is sleeved on the mandrel and can rotate around the mandrel; Outer coil tape and inner coil spring, one end of the coil spring is hooked to the tape, the other end is fixed on the mandrel, the head of the tape is connected with a hook, and the tape control button is installed on the shell. When the ruler tape is pulled out, it drives the ruler tape box to rotate, and at the same time makes the coil spring tightly wound around the mandrel to store the recovery force. When recovering, the force of the coil spring is released, and the tape is recovered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/10
Inventor 叶小文叶必卿
Owner 叶小文
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