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Tape measure

A technology of tape measure and ruler box, applied in the direction of bendable ruler, etc., can solve the problems of tape twisting, tape measure accuracy, service life and convenience, etc., and achieve the effect of high precision level and easy manufacture

Inactive Publication Date: 2007-12-26
胡维朗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention hopes to solve the problem that the accuracy, service life and convenience of the tape measure cannot be achieved at the same time, and provides an accurate and light tape measure
[0006] The present invention also hopes to solve the problem of tape twisting and provide a tape measure that can use steel wire as a measuring medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: as shown in Figure 1, the tape measure includes a ruler box and a ruler tape 1. The ruler tape 1 is a thinner steel wire, which is placed on the rotating shaft 9 in the ruler box in a coiled manner. There is also a roller 2 and a roller mark in the ruler box. counting device, and a counting display device 4; the roller counting device is composed of a mark 6 on the roller and a photoelectric sensor 3 for identifying the mark, through which the photoelectric sensor records the stroke of the roller; the tape 1 is closely attached to the roller 2 On the top, after going around a certain angle, it protrudes out of the ruler box, and the length of the contact part with the circumference of the roller is greater than one-third of the circumference of the roller; when the ruler tape 1 moves, the peripheral surface of the roller 2 moves at the same linear speed, The roller counting device records the movement of the roller and presents it to the user through the co...

Embodiment 2

[0020] Embodiment 2: As shown in Figure 2, the tape measure includes a ruler box and a ruler tape 1. The ruler tape 1 is placed on the rotating shaft 9 in the ruler box in a coiled manner. There is also a roller 2 and a tensioning wheel 5 in the ruler box. The wheel is close to the roller to press the ruler tape 1 on the roller 2; this embodiment also includes a gear set composed of gears 71, 72, 73, 74, wherein the gear 71 rotates coaxially with the roller 2 and drives other gears to move. The gear 74 and the digital wheel 8 mesh with each other; when the tape moves, the circumference of the roller moves at the same linear speed, and the roller drives the gear set through the coaxially rotating gear, and then drives the digital wheel 8 to display data.

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PUM

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Abstract

A flexible tape is prepared for setting a contact roller and counting unit of contact roller as well as counting display unit in tape box, fitting tap belt closely on contact roller, making surface of contact roller move in the same linear speed when tape belt is moved, using contact roller counting-unit to record movement of contact roller and presenting recorded movement to user by counting display unit.

Description

technical field [0001] The invention belongs to measuring tools, in particular to measuring tapes. Background technique [0002] A tape measure is a measuring tool widely used in various occasions, mainly used to measure various length parameters. As far as tape measures are concerned, the two most important indicators should be measurement accuracy and ease of use. [0003] The tape measure in the prior art usually includes a ruler box and a ruler tape. The ruler tape is marked with a scale, which is coiled into a roll and placed in the ruler case. When in use, the ruler tape is pulled out and the length is measured with the scale on the ruler tape. Generally, the material of the ruler tape is iron or organic material. The stability of the iron ruler tape is better. Although it is used for a long time and in various environments, it will not produce large deformation, but its disadvantage is its quality. Larger, when the tape needs to be made very long, such as more than ...

Claims

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Application Information

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IPC IPC(8): G01B3/10
Inventor 胡维朗郑维军
Owner 胡维朗
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