JPH0242293Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a head strap for a dust mask, gas mask, etc.

(Prior Art) As shown in FIG. 3, a conventional head strap of this type has a stretchable tightening strap 3 extending from the joint of a band 1 that is hung around the top of the head and a band 2 that is hung around the back of the head. are connected at the back of the neck via string loops 5 on both sides of the mask 4.

(Problem that the invention aims to solve) However, when the tightening string is connected at the back of the neck in this way, when you turn your face up and down or left and right, the face part moves a lot, whereas the back of the neck moves a lot. Because the target does not move, the tightness of the tightening string changes, making it stronger or looser in some areas, which is a drawback.

The present invention solves the above-mentioned drawbacks and provides a head strap for a mask in which the tightness of the tightening strap does not change.

(Means for solving the problem) It has a band that hangs around the back of the head, and elastic tightening strings that extend from both ends of the band are connected at the back of the head via string passages on both sides of the mask. The connecting portion is held by hooking the end of the extending portion extending downward from the approximate center of the band.

(Function) According to this configuration, since the connecting portions of the left and right tightening strings are held by the head, the connecting portions also move in the same manner as the face is turned up and down and left and right. No change occurs either.

(Example) Examples will be described in detail below with reference to the drawings. 1st
The figure shows an embodiment of the present invention, in which 1 is a band that is hung around the top of the head, and 2 is a band that is hung on the back of the head, both of which are made of plastic. Approximately in the center of the band 2 is an extending portion 6 extending downward. 3 is an elastic tightening cord made of an elastic material such as rubber, and 4 is a dust mask. When wearing a mask, connect the left and right tightening strings 3 that pass through the string passages 5 of the dust mask 4 at the back of the head, as shown in FIG. to hold it by hooking it to the end of the

In this embodiment configured as described above, the connecting portion of the tightening string 3 is held at the back of the head, so that the entire mask and head strap move together with the face and head.

(Effects of the invention) As explained above, according to the invention, the tightness of the tightening string on the head strap of the mask does not change depending on the direction of the face, and the adhesion of the mask to the face is ensured. can be retained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a diagram showing the state of the head strap at the back of the head when the mask of Fig. 1 is worn, and Fig. 3 is a view of the conventional mask. It is a figure showing the state where it is worn. 2...Band hung on the back of the head, 3...Tightening string,
4... Dust mask, 5... Strap looping part, 6... Extension part.

Claims (1)

[Scope of utility model registration request] A head strap for a dust mask, gas mask, etc.
A band to be hung on the back of the head, a stretchable tightening string extending from both ends of the band and connected at the back of the head via string passages on both sides of the mask, and extending downward from approximately the center of the band. A head strap for a mask, comprising an extension part that extends and hooks and holds the connecting part of the tightening strap at an end thereof.