JP2005152229A - Clip for mask - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adjust the mounting length of straps without stages by arranging a clip for a mask and performing continuous change. <P>SOLUTION: The clip for the mask is formed of a flat board with uniform thickness, where a pair of mounting slits 6, 7, a connection slit 8 for connecting the mounting slits 6, 7, and a lock part 9 are formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to a clip for a mask that can adjust and fix the attachment length of a pair of straps attached to a mask body.

  A conventional dustproof mask includes, for example, a length adjusting member for a tightening string of a mask as shown in Patent Document 1 below. The length adjusting member of the mask tightening string is provided with a through hole and a notch communicating with the through hole from the outside at the rear end portion of the elastic thin plate piece, and one side of the mask tightening string is passed from the outside to the through hole through the notch. Removably attached to the rear end of the horizontally long elastic thin plate piece, and attached to the upper and lower portions of the elastic thin plate piece and tilted toward the rear end of the elastic thin plate piece to project the elastic thin plate piece to a plurality of hooks The other side of the strap can be worn detachably. Such a mask is excellent in that the mask can be worn while wearing a hat or a helmet.

Japanese Patent No. 3,413,585

However, the conventional adjustment member can adjust the attachment position of the strap, but has various drawbacks. That is, in the adjusting member, the fastening length of the fastening string can be adjusted by detachably locking the fastening string to a stage selected from a plurality of stages of the hook part, but the fastening string is attached to the hook part formed in a plurality of stages. In order to lock, the fastening string must be locked only at the portion where the step is formed. For this reason, the size of the head of the wearer differs depending on the wearer, and the tightening of the tightening string varies depending on the wearer. Therefore, the length of the tightening string is continuously changed without any change. Can not be locked. In addition, the tightening strength of the tightening string with respect to the head cannot be adjusted.
SUMMARY OF THE INVENTION An object of the present invention is to provide a mask clip that can be continuously adjusted by continuously changing the strap attachment length. Another object of the present invention is to provide a mask clip that can adjust the tightening strength of the strap.

  A book that connects a pair of straps (3,4) of the mask (1) with a mask body (2) and a pair of straps (3,4) attached to the mask body (2) at the back of the wearer's head The mask clip according to the invention includes a pair of mounting slits (6, 7), a connecting slit (8) for connecting the mounting slits (6, 7), and a locking portion (9). When wearing the mask (1) on the wearer's head, the two straps (3) inserted into the connecting slit (8) are frictionally locked to the wearing slit (6, 7) and the other Since one strap (4) is locked to the locking portion (9), one strap (3) can be easily locked at a desired position with respect to the mounting slit (6, 7). The mounting length and tightening strength can be adjusted continuously.

  The strap (4) can be fixed to the heads of wearers of different sizes with the optimum length and tightening strength.

Embodiments of a mask clip according to the present invention will be described below with reference to FIGS.
As shown in FIG. 1 and FIG. 2, a mask equipped with a mask clip according to the present invention comprises a mask body (2) and a pair of straps (3,4) attached to the mask body (2). Yes. The mask body (2) is formed in a cup shape that covers the wearer's nasal cavity and mouth by a fiber material having air permeability such as a woven fabric or a nonwoven fabric of a fiber such as polypropylene. The mask body (2) is provided with an exhaust valve (15) that opens when the wearer exhales. During inhalation of the wearer who closes the exhaust valve (15), the ambient air in which dust is filtered through the breathable mask body (2) by the negative pressure generated in the mask body (2) is contained in the mask body (2). Flow into. Each strap (3, 4) is formed of an elastic string in which a rubber thread such as natural rubber or an elastic thread is put as a core on a flat or round punched polyester or spandex string, and has stretchable elasticity. The end (3a, 4a) of the strap (3,4) is fixed to the flange (2a) formed on the outer periphery of the mask body (2) by ultrasonic welding, and the strap (3,4) is loop-shaped. It is attached to the mask body (2). In the present embodiment, for example, one of the straps (3, 4) locked to the locking portion (9), that is, the other strap (4) may be shorter than one strap (3).

  The clip (5) attached to the strap (3,4) is formed into a flat plate having a uniform thickness using a flexible and elastic resin such as polypropylene or nylon. As shown in FIGS. 3 and 4, the clip (5) includes a pair of linear mounting slits (6, 7) and a curved connecting slit (8) connecting the mounting slits (6, 7). A wide slit (10) and a guide slit (11) are formed in a triangular shape in communication with the connecting slit (8) and the mounting slits (6, 7). The curved connecting slit (8) is formed by the projecting part (8a) and the recessed part (8b) separated from each other of the clip (5), and the projecting part (8a) forms the locking part (9). A guide slit (11), a wide slit (10), and a mounting slit (6, 7) are continuously formed at both ends of the connecting slit (8), and a pair of mounting slits (6, 7) and a wide slit (10 ), The guide slit (11) and the connecting slit (8) are formed in a substantially Σ shape as continuous slits. As shown in FIG. 5, when the convex part (8a) and the concave part (8b) of the elastic clip (5) are moved in different directions in the thickness direction, the convex part (8a) and the concave part (8b) A large opening (8c) is formed between them, and one strap (3) is inserted into the connecting slit (8) through the opening (8c), and then a pair is formed through the guide slit (11) and the wide slit (10). One strap (3) can be inserted into the mounting slit (6, 7). In this case, in the present embodiment, the strap (3,4) has a thickness smaller than the width of the mounting slit (6, 7) when the strap (3,4) is stretched by applying a tensile force. When the tensile force is removed, it is preferable to have a thickness larger than the width of the mounting slit (6, 7). Similarly, the other strap (4) can be locked to the locking portion (9) through the opening (8c).

  When the mask (1) is mounted on the head, as shown in FIG. 5, an opening (8c) is formed between the convex portion (8a) and the concave portion (8b) to form the opening (8c). One strap (3) is inserted, and then one strap (3) is press-fitted into the pair of mounting slits (6, 7) through the guide slit (11) and the wide slit (10), as shown in FIG. As shown, attach the clip (5) to one of the straps (3). Next, after attaching the mask body (2) to the face so that the nasal cavity and mouth are covered with the mask body (2), turn the clip (5) and the other strap (4) to the back of the head to open the opening (8c ) And the other strap (4) is hooked on the locking portion (9) formed by the convex portion (8a). Thereafter, as shown in FIG. 4, when one strap (3) arranged outside the mounting slit (6, 7) is pulled outward, the thickness of the strap (3) decreases and at the same time, although not shown, The concave portion (8b) is deformed outward against the elasticity of the locking portion (9), and the width of the mounting slit (6, 7) forming the concave portion (8b) is slightly expanded. The strap (3) can be pulled out smoothly through 6,7). When the tension of the strap (3) is stopped, the thickness of the strap (3) returns to the initial thickness and the deformation of the recess (8b) is released, so the side edge (3a ) Is bent by the frictional force to the side edges (6a, 7a) of the mounting slits (6, 7) in a state of being bent by the wearer's head and the clip (5). Accordingly, the strap (3) can be locked in the mounting slit (6, 7) in this state, and the strap (3) can be held in the mounting slit (6, 7) by friction at two locations. To adjust the length or tightening strength of the strap (3), stretch the strap (3) once to reduce the thickness of the strap (3) and reduce the width of the mounting slit (6,7) slightly. The strap (3) is pulled as it is or moved from the mounting slit (6, 7) to the wide slit (10), and then the strap (3) is further pulled or relaxed to relax the wide slit ( When press-fitting into the mounting slit (6, 7) from 10), the strap (3) can be attached around the head with a desired length or position and with a desired tightening strength. In addition, since the strap (3) can be continuously pulled or relaxed, the attachment length and the tightening strength of the strap (4) can be continuously adjusted continuously. In other words, when the mask (1) is mounted, one strap (3) is inserted into the connecting slit (8) of the clip (5), and the two positions of the strap (3) are paired with the pair of mounting slits (6, 7), when the other strap (4) is locked to the locking portion (9) and the length of one strap (3) is adjusted, the clip (5) Unless the entire surface is in contact with the medium and the strap (3) inserted into the mounting slit (6, 7) is forcibly pulled by an external force, friction caused by contact between the clip (5) and the back of the head The movement of one strap (3) in the mounting slit (6, 7) is prevented. In addition, if the width (H) of the locking portion (9) is formed to be approximately equal to the width of the base of the ear over which the strap (3,4) straddles, the ear is not rubbed by the strap (3,4), so it is comfortable The state of use can be obtained. In this case, the strap (3) passing through the mounting slit (6, 7) is sandwiched between the back of the wearer and the clip (5) inside the clip (5). 7) Even if the frictional force of the strap (3) against the strap is small, the strap (3) can be securely inserted into the mounting slit (6, 7) without being displaced from the mounting slit (6, 7) at the position where the tension is stopped. Retained. Therefore, even if the thickness of the strap (3) is almost the same as that of the mounting slit (6, 7), the strap (3) can be securely fastened by the clip (5) at the back of the head of the wearer. Moreover, what was formed in various cross sections, such as a rectangular cross section and a round cross section, can be used for a strap (3,4).

  The embodiment of the present invention can be modified. For example, instead of forming the mounting slits (6, 7) in a substantially horizontal direction, as shown in FIG. 6, it can be formed in a substantially vertical direction. Also, instead of integrally forming the connecting slit (8) and the locking portion (9), a slit different from the connecting slit (8) is formed as the locking portion (9) to form the locking portion (9). May be provided at a separate position. Further, since the exhaust valve (15) may be attached as necessary, it is not necessary to provide the exhaust valve (15) in the mask body (2).

  The mask clip of the present invention is not limited to a dust mask, and can be applied to other masks such as a cold mask or a pollen mask.

Front view of a mask equipped with a mask clip according to the present invention Rear view of FIG. Front view of a clip for a mask according to the present invention Front view of clip for mask showing strap attached Side view of a clip for a mask according to the invention The front view which shows other embodiment of the clip for masks by this invention

Explanation of symbols

  (1) ... Mask, (2) ... Mask body, (3) ... One strap, (4) ... The other strap, (5) ... Clip, (6, 7) ... Installation slit, (8) ・ ・ Connection slit, (9) ・ ・ Locking part, (10) ・ ・ Wide slit,

Claims (8)

In a clip that connects a pair of mask straps with a mask body and a pair of straps attached to the mask body at the back of the head of the wearer,
The clip includes a pair of mounting slits, a connecting slit that connects the mounting slits, and a locking portion.
When wearing the mask on the wearer's head, the two straps inserted into the coupling slit are frictionally locked to each of the pair of mounting slits, and the other strap is locked to the locking portion. A mask clip characterized by that.   The strap has elasticity that can be expanded and contracted, has a thickness smaller than the width of the mounting slit when the strap is stretched by applying a tensile force, and has a thickness larger than the width of the mounting slit when the tensile force is removed. The mask clip according to claim 1.   The mask clip according to claim 1, wherein the locking portion is formed by a connection slit.   The mask clip according to any one of claims 1 to 3, wherein the clip is formed of a resin having flexibility.   The wide slit that communicates with the pair of mounting slits is formed, and one strap locked to the mounting slit can be slid from the mounting slit to the wide slit to release the engagement with the mounting slit. The clip for a mask according to item 1.   The mask clip according to any one of claims 1 to 5, wherein the pair of mounting slits and the connecting slit are formed in a substantially Σ shape as continuous slits.   When wearing the mask, insert one strap into the clip's connecting slit, lock the two straps to the pair of mounting slits, and lock the other strap to the locking part. When the length is adjusted, the clip will contact the back of the head of the wearer with sufficient strength, and the clip will contact the back of the head unless one of the straps inserted into the mounting slit is forcibly pulled by an external force. The mask clip according to any one of claims 1 to 6, wherein movement of one of the straps within the mounting slit is prevented by friction caused by the above.   The clip for a mask according to any one of claims 1 to 7, wherein the clip is formed of a flat plate having a uniform thickness.

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