Steel tape

A steel tape measure and ruler wheel technology, applied in the direction of a bendable ruler, can solve the problems of high noise, high production cost, easy wear, etc., and achieve the effects of slow speed, low cost, and reduced wear and tear.

Inactive Publication Date: 2008-12-31
陆群胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a steel tape, which overcomes the disadvantages of the existing steel tape, such as easy wear, high noise and high production cost.

Method used

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  • Steel tape

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Embodiment Construction

[0011] Such as figure 1 As shown, the steel tape measure of the present invention mainly includes a housing 1, a reverse spring 2, a ruler belt 3 and a ruler wheel 4. The center of the housing 1 is provided with a central column 5, and the described ruler wheel 4 is installed on the central column 5, the center of the scale wheel 4 is provided with a bearing 6, and the scale wheel 4 is fixed on the center column 5 through the bearing 6; the reverse spring 2 is fixed on the center column 5, and the reverse spring 2 is located inside the scale wheel 4; The ruler tape 3 mentioned above is wound on the outside of the ruler wheel 4 . When in use, no noise will be generated when the ruler tape 3 is pulled, the wear of the ruler wheel 4 is reduced, and the service life of the steel tape is prolonged; at the same time, the requirement for the amount of the counter spring 2 is reduced, and the production cost is saved.

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Abstract

The invention relates to a steel measuring tape which mainly comprises a shell, a measuring tape belt and a measuring tape wheel, wherein, the center of the shell is provided with a central post, the measuring tape wheel is installed on the central post; the measuring tape belt is wound outside the measuring tape wheel. The steel measuring tape is characterized in that: a bearing is installed at the center of the measuring tape wheel which is fixed on the central post of the shell by the bearing; a backward spring is fixed on the central post and positioned in the interior of the measuring tape wheel. The advantage of the measuring tape is that: no noise can be generated when the measuring tape belt is pulled, therefore, the abrasion of the measuring tape wheel is reduced and the service life of the steel measuring tape is prolonged; simultaneously, the requirement on the backward spring is lowered and the production cost is saved.

Description

technical field [0001] The invention relates to the field of hand tools, in particular to a steel tape measure. Background technique [0002] At present, the commonly used 8m steel tape measure (reverse spring is used in the ruler core) needs a reverse spring (length 5m, width 22mm, thickness 0.123) and a reverse spring heavy blade 118g. If the reverse spring is 8000 yuan per ton, use a reverse spring The price increases by 0.95 yuan; in addition, the 8m steel tape is used to pull out the tape and the noise is very serious, which affects the quality of the steel tape, and there has been no way to improve the quality and standards. Now steel tapes with high quality requirements require imports of anti-spring steel strips from abroad, and the use of imported steel strips will increase production costs. Imported steel strips are 12,000 yuan per ton. 0.123) and a reverse spring heavy blade 118g, an increase of 1.62 yuan cost with a reverse spring. Therefore, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/10
Inventor 陆群胜
Owner 陆群胜
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