Nondeforming band tape hub

A wheel hub and tape measure technology, applied to bendable rulers and other directions, can solve problems affecting normal use, radial deformation and distortion, and coil spring rewinding with large pre-tightening force, so as to prolong service life, prevent radial distortion and deformation, Increased blocking effect

Inactive Publication Date: 2010-02-03
NINGBO HONGDI MEASURING TAPE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, it will be found that when the tape measure is longer, the required coil spring rewinding preload is also larger, so the width and length of the coil spring are larger. Radial deformation and distortion are prone to occur under tension, which affects normal use and shortens the service life of the caliper, which needs further improvement

Method used

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  • Nondeforming band tape hub
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Examples

Experimental program
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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Such as Figure 1 to Figure 4 As shown, a non-deformable tape measure hub includes a hub seat 1 with a central shaft hole and a hub cover 2 correspondingly provided with a central hole, wherein the hub seat 1 includes a disc 11 and is integrally connected with it, and The cylindrical piece 12 perpendicular to it, the hub cover 2 is buckled on the end of the cylindrical piece 12 in the following way: the cylindrical piece 12 of the hub seat 1 is provided with three axially outward protrusions at its end, and along the The baffles 13, 14, 15 uniformly distributed in the circumferential direction of the cylindrical piece 12 also have radially inwardly convex parts at the ends of the baffles, and the hub cover 2 is provided with limiting holes 21, 22, 23 at corresponding positions. The baffles 13 , 14 , 15 pass through the corresponding li...

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PUM

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Abstract

A tapeline wheel hub is not easy to deform which includes the wheel hub seat and the cover. The seat includes the wafer and the cylinder sheet which is vertical to the wafer. The wheel hub cover covers on the end of the cylinder sheet which is also set with at least two axis heave part. The holes opened on the wheel hub cover are inserted by the heave part. Compared to the present technology, theheave part is added to the cylinder sheet to intensify the location lock. So when the wheel hub suppresses the big spring coiling tensile, it can prevent it deform to prolong its life.

Description

technical field [0001] The invention relates to a tape measure winding device, in particular to a tape measure wheel hub which is not easily deformed. Background technique [0002] Because of its small size and easy to carry, the tape measure has become one of the necessary tools for workers in many industries as an easy-to-carry measuring tool. [0003] Existing tape measures generally include a ruler box, a hub and a tape wound on the hub, wherein the hub is a winding device for the tape measure, and the tape can automatically retract under the restoring force of the coil spring built in the hub. Usually, the hub is composed of a hub cover and a hub seat. During the manufacturing process, the coil spring needs to be placed in the cavity of the hub seat in advance, and then fixed in the hub seat by fastening the hub cover. Therefore, in the hub seat Generally, there will be a positioning piece for buckling the hubcap on the edge, and the positioning piece can pass through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B3/10B65H75/14B65H75/48
Inventor 周晓刚
Owner NINGBO HONGDI MEASURING TAPE IND CO LTD
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