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Flexible rule

A tape measure and shell technology, applied in the direction of a bendable ruler, etc., can solve the problems of difficulty in controlling the length, easy to cause tape expansion, tape measure impact, etc., to achieve accurate length control, prolong service life, and prevent tape expansion.

Inactive Publication Date: 2010-01-13
吴其联
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, although many improvements have been made and certain technical effects have been achieved, the above-mentioned patents generally have the following problems: when the external force is terminated, due to the existence of inertial force, the core disc cannot be braked immediately, so that when it is recovered , the ruler core disk has a certain impact on the internal mechanism of the tape measure, and it is easy to cause damage to the parts over time. Moreover, the tape is loosely wound and scattered, which is easy to cause swelling; when pulled out, the tape may be long or short, and it is difficult to Control the appropriate length

Method used

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Examples

Experimental program
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Embodiment 1

[0044] Embodiment 1, reference Figure 1 to Figure 4 As shown, the tape measure in this embodiment includes a housing, a rocker seat 4, a rocker handle 1, a core disc 11, a tape 12, a support plate 10, a transmission mechanism and a damping mechanism.

[0045] The casing is assembled from the upper first casing 2 and the second casing 13 , the casing has a handle portion 21 , and the tape 12 is coiled on the core disc 11 .

[0046] The rocker seat 4 is arranged on the first shell, and the rear end has a clutch groove. One end of the rocker handle 1 is hinged to the rocker seat 4 through a cylindrical pin 3, and the other end is a free end for use by shaking operation. The ruler core plate 11 It is arranged in the housing and is used to drive the measuring tape 12 to be pulled out and rolled up.

[0047] The transmission mechanism is also arranged in the housing and located between the rocker seat 4 and the core plate 11 for transmitting the driving force of the rocker handle ...

Embodiment 2

[0055] Embodiment 2, refer to Figure 5 As shown, the damping mechanism of the tape measure in this embodiment includes a compression spring 6a and a marble 5b arranged at one end against the rear end surface of the handle seat 4. The front end surface of the internal gear 7 has a groove, and the front end of the compression spring 6a is in contact with the marble 5b. contact, and the rear end is against the bottom of the internal gear 7 grooves. Other structures and working principles are the same as in Embodiment 1.

Embodiment 3

[0056] Embodiment 3, refer to Figure 6 As shown, the damping mechanism of the tape measure in this embodiment includes a compression spring 6a and a toothed spring 5c ​​that is arranged at one end to resist the rear end surface of the handle seat 4. The front end surface of the internal gear 7 has a groove, and the front end of the compression spring 6a is connected to the toothed spring. 5c contacts, and the rear end is against the bottom of the internal gear 7 grooves. Other structures and working principles are the same as in Embodiment 1.

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Abstract

The invention relates to a flexible rule, which comprises the following parts: a shell; a handle seat (4) arranged on the shell; a handle handgrip (1) of which one end is connected with the handle seat (4); a rule core plate (11) for driving rule strip to be drawn out and coiled; and a driving mechanism which is used for transmitting the driving force of the handle handgrip (1) to the rule core plate (11) and is arranged in the shell and positioned between the handle seat (4) and the rule core plate (11). The flexible rule is characterized by further comprising a damping mechanism which can instantaneously stop the rule core plate (11) from rotating continuously when the rule strip is in the drawn out state or in the coiled state. Compared with the prior art, the flexible rule has the following advantages that: the increased damping mechanism can stop the rule core plate instantaneously without being influenced by the inertia force and the elastic force of the stretching of the rule strip so that the rule core plate stops rotating; the flexible rule not only can prevent expansible band and dispersion, but also can reduce the impacts caused by the self-rotation of the rule core plate, and prolong the service life of the flexible life; besides, when the rule strip is drawn out, the length can be controlled accurately.

Description

technical field [0001] The invention relates to a tape measure. Background technique [0002] The existing hand-operated tape measure has a simpler structure, generally including a housing, a rocking lever and a tape measure disc located in the housing. The rocking lever is connected to the tape measure disc to form an integral body. When the belt is worn, the tape measure disc rotates thereupon, and the rocking lever formed integrally with the tape measure disc also rotates together. On the contrary, by shaking the rocking bar, the rocking bar drives the tape measure disc to recover the tape. Usually the rocking speed of this kind of tape measure rocking lever is equal to the speed of the tape measure disc. When the tape is pulled out, the rocking lever also rotates thereupon. If the speed is too fast, it is easy to hurt the surrounding operators, and the safety needs to be improved. [0003] As an improvement, a planetary gear mechanism is added between the tape measure d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/10
Inventor 黄忠华张令辉
Owner 吴其联
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