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Long ruler

A long ruler and ruler spring technology, applied in the field of long rulers such as tape measure or tape measure, can solve the problems that the tape cannot be smoothly rewinded, is not very convenient to use, and is inconvenient to hold and use, and achieves simple and reasonable structure, convenient assembly and production, Easy to hold and use

Active Publication Date: 2008-05-07
NINGBO GREAT WALL PRECISION INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the tape is relatively long, once it exceeds 10M, it will be wound on the core, which will cause the tape to be relatively large in size, which is not easy to hold and use, and if the elastic force of the spring is too large, it is easy to cause the tape to cut people's hands, and the elasticity is not enough. It is easy to cause the ruler tape to not be wound back on the ruler core smoothly, so further improvement is needed; the other is to drive the ruler tape around the ruler core by rotating the ruler core by hand, so as to recycle the ruler tape. Generally, it is more than 10M, and it is called a long ruler. Its disadvantage is that it needs to be recycled by hand, which is not very convenient to use.

Method used

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] As shown in the figure, the numbers of the attached drawings are: front scale housing 1, scale spring 2, internal gear plate 3, middle split mounting plate 4, which is the middle scale shell, scale belt 5, metal ratchet plate for scale core 6, main body of the scale core plate 7, central shaft 8, transition gear 9, button 10, button pin shaft 11, button spring 12, pawl 13, pawl shaft 14, torsion spring 15, rear foot shell 16, slot 17, slot 18, ruler core Disk 19, housing 20, braking mechanism 21, left mounting cavity 22, right mounting cavity 23, driving mechanism 24, gear 25, first gear 26 of transition gear, second gear 27 of transition gear, button mounting hole 28, ratchet 29.

[0024] A kind of automatic reclaiming long ruler, it comprises housing 20, is installed in housing rotatable chi core dish 19, chi spring 2, chi tape 5 and...

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Abstract

The invention relates to a long ruler, comprising a casing, a ruler core disk, a ruler spring, a ruler belt, a braking device, a middle dividing mounting plate and a driving device, which is characterized in that: the ruler core disk, the ruler spring and the ruler belt are arranged in the casing; the ruler core disk can rotate; the ruler belt is wound on the ruler core disk; one end of the ruler belt extends out of the casing; the ruler spring is connected with the ruler core disk through the driving device; the braking device is arranged between the button of the casing and the ruler core disk; the casing cavity is divided into a left arranging cavity and a right arranging cavity through the middle dividing mounting plate, wherein the ruler spring is arranged in one arranging cavity and the ruler core disk arranged in the other; one end of the driving device is connected with one end of the ruler spring and the other end is connected with the ruler core disk. The invention has the advantages of simple and reasonable structure, convenience for handheld usage, easy assembly and production, suitable for popularizing and applying in long ruler.

Description

technical field [0001] The invention relates to a long ruler in a measuring tool, such as a tape measure or a tape measure. Background technique [0002] There are roughly two types of common tape measures currently available on the market. The tape is recovered by the spring force. The spring and the core are mounted on the same axis. After the tape is pulled out by hand, the spring contracts to gather energy. After the tape is released by the hand, it is recovered by elastic force. Tape, but the tape of this kind of tape generally does not exceed 10M. Because the tape is relatively long, once it exceeds 10M, it will be wound on the core, which will cause the tape to be relatively large in size, which is not easy to hold and use, and if the elastic force of the spring is too large, it is easy to cause the tape to cut people's hands, and the elasticity is not enough. It is easy to cause the ruler tape to not be wound back on the ruler core smoothly, so further improvement i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/10
Inventor 黄忠华
Owner NINGBO GREAT WALL PRECISION INDAL
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