Length adjusting device for fastening straps of mask

A technology of length adjustment and tightening belt, which is applied to the device for pulling clothes, clothing, buckles, etc., which can solve the problems of insufficient adjustment of the tightening belt, difficulty in manufacturing, narrowing of space, etc.

Inactive Publication Date: 2005-01-05
SWANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As mentioned above, the conventional adjustment mechanism of the mask tightening belt is complicated in structure, difficult to manufacture, and thus the manufacturing cost is very high, and these are problems to be solved
In addition, the complicated structure makes it inconvenient to adjust the tightening strap 12 to an appropriate length
Therefore, although the space between the mask 11 and the wearer's face can be narrowed, there is still a problem to be solved; that is, the tightening strap 12 may be tightened too tightly or too loosely for a comfortable fit.
[0005] It is not enough to just add the engaging part 18 to the adjustment mechanism of the strap of the mask to adjust the strap to the proper length

Method used

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  • Length adjusting device for fastening straps of mask
  • Length adjusting device for fastening straps of mask
  • Length adjusting device for fastening straps of mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Modes of embodying the length adjusting device of the mask tightening band of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] The length adjusting device of the mask tightening belt of the present invention comprises an elongated elastic thin plate 1, at its rear end portion ( figure 1 The right end portion of the mask 2), one of the mask 2 tightening straps 3, 3' is detachably mounted thereon. Furthermore, the elastic sheet 1 includes a plurality of stepped hook-shaped portions 4 to which the other one of the tightening bands 3, 3' can be engaged. Figure 1-4 , Figure 5 , Figure 6 and Figure 7 The first, second, third and fourth modes of carrying out the present invention are shown respectively.

[0029] Here, in the specification, the rear end portion of the elastic thin plate 1 means figure 1 in its right-hand part, and the top part represents its left-hand part. The tightening band 3 is describ...

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PUM

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Abstract

A length adjusting device for fastening straps of a mask includes an oblong elastic thin plate with a plurality of stepped hook portions. One strap of fastening straps of the mask is to be detachably fitted at a base end portion of the elastic thin plate and another strap of the mask is to be engageably fitted on the stepped hook portions. The elastic thin plate may have a piercing hole at its base end portion, into which the strap of the mask is to be detachably fitted, and / or have opposing hook portions which opposingly project from both its upper and lower sides and incline toward the base end of the elastic thin plate. The piercing hole may have a cut and the cut may extend slantingly toward a tip side of the elastic thin plate.

Description

technical field [0001] The present invention relates to a length adjusting device for tightening straps of various face masks, especially for dust masks, where it is required to reduce the gap between the mask and the wearer's face in order to prevent harmful substances such as dust. intrusion of substances. Background technique [0002] Such as Figure 10 and 11 A conventional mask of the type shown is provided with a mechanism for adjusting the length of the strap 12 at the mating portion of the strap 12 and the mask 11 . This adjusting mechanism comprises the protruding part 13 that is respectively arranged on the upper part and the lower part of the both sides of the edge part of mask 11, and it each has a through hole 16 that has the notch 15 that extends from guide groove 14 and has a Stops 17 for the inlet and outlet 17 a on both sides, which span the gap 15 . The end of the tightening band 12 of the mask 11 is inserted into the through hole 16 from below, stretche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62B18/02A41D13/11A62B18/08
CPCA41D13/1161Y10S24/43A62B18/084Y10T24/3924Y10T24/14Y10T24/1404Y10T24/45215A41F7/00
Inventor 向山悦治
Owner SWANS
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