CN107105803B - Buckle for adjusting length of strap and respirator including the same - Google Patents

Buckle for adjusting length of strap and respirator including the same Download PDF

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Publication number
CN107105803B
CN107105803B CN201580070220.4A CN201580070220A CN107105803B CN 107105803 B CN107105803 B CN 107105803B CN 201580070220 A CN201580070220 A CN 201580070220A CN 107105803 B CN107105803 B CN 107105803B
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CN
China
Prior art keywords
buckle
strap
respirator
buckles
opening
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Expired - Fee Related
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CN201580070220.4A
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Chinese (zh)
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CN107105803A (en
Inventor
金正汉
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of CN107105803A publication Critical patent/CN107105803A/en
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Publication of CN107105803B publication Critical patent/CN107105803B/en
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02Masks
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/084Means for fastening gas-masks to heads or helmets
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1161Means for fastening to the user's head
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/02Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps
    • A44B11/06Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps with clamping devices
    • A44B11/12Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps with clamping devices turnable clamp
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02Masks
    • A62B18/025Halfmasks

Abstract

The invention provides a buckle for adjusting the length of a strap and a respirator including the buckle. The buckle for adjusting the length of a belt includes: a buckle body extending in one direction, and a clamping portion formed in the buckle body and clamping a strap connected to one side of a respirator body, wherein the clamping portion includes a fixing member connected to one end of an opening formed in the buckle body, a hinge moving the fixing member by rotation, and a fixing protrusion provided at the other end of the opening, and the fixing member is selectively hooked and fixed on the fixing protrusion, and the strap is inserted into a space between the fixing member and a sidewall of the opening and clamped by the clamping portion when the fixing member is fixed by the fixing protrusion.

Description

Buckle for adjusting length of strap and respirator including the same
Technical Field
The present invention relates to a buckle for adjusting the length of a strap and a respirator including the buckle.
Background
Respirators are worn to prevent the introduction of dust, dirt, odors or gases into the mouth or nose of a person. Respirators having different shapes are used according to purposes. In particular, respirators are required for health and safety reasons for workers at industrial sites.
Respirators have been produced to be easy to wear due to the nature of the respirator that needs to be worn several times, even a day. For example, respirators that can be worn in such a way have also been proposed: elastic bandages are attached to both sides of a covering member that can cover the mouth and nose and the elastic bandages are placed around the back of the head with the respirator body in close contact with the face portion. For this reason, for example, a respirator has been proposed which has a structure in which a hook fixed to an elastic bandage at one side of the respirator is hooked on an elastic bandage at the rear of the head at the other side of the respirator, or a separate hanging member is provided, and elastic bandages at both sides of the respirator are simultaneously hooked on the hanging member. The respirator having the above-described structure can be fixed to the face by performing an operation of merely hooking the elastic bandage on the hook or the hanging member, and therefore, the wearer can wear the respirator quickly and conveniently.
However, in the respirator having the above structure, it is impossible to adjust the length of each elastic bandage. Therefore, it is difficult for a person with a small head to closely contact the face portion when wearing the respirator. In order to solve this problem, a respirator has been proposed which has a structure in which a length adjustment portion is formed in which an elastic bandage is sewn at a connection point between the elastic bandage and a respirator body and is frictionally supported, and the length of each elastic bandage is adjustable when a wearer pulls a distal end of the elastic bandage.
The respirator body is attached to an elastic bandage at four points (upper left/lower left, upper right/lower right) for stable support. In this case, when it is necessary to adjust the length of each elastic bandage, there is the following inconvenience: the elastic bandage should be pulled separately at all four points.
In addition, in the length adjustment part formed in such a manner that the elastic bandage is sewn on, the length of each elastic bandage can be adjusted by pulling the elastic bandage in a direction in which the elastic bandage is wound, but the elastic bandage is not pulled but fixed in a direction opposite to the direction in which the elastic bandage is wound. Thus, it is easy to tightly adjust the length of each elastic bandage by pulling the distal end of the elastic bandage. However, it is difficult to loosen the elastic bandage by performing an operation of pulling only the elastic bandage on the opposite side. In this case, there is the following inconvenience: the elastic bandage should be unwound from the length adjustment part using both hands as a knot to release the elastic bandage again.
Further, since the length adjustment portion is formed on the respirator body, the remaining portion of the elastic bandage (from the length adjustment portion to the distal end) is located at the wearer's face after the length of each elastic bandage is adjusted. This is less aesthetically pleasing and, when the remainder of the elastic bandage is longer, it may interfere with the wearer's task or field of vision.
The present invention relates to providing a buckle for adjusting a length of a strap and a respirator including the same, which can improve convenience in: adjusting a length of each elastic bandage, and performing a bi-directional length adjustment of each elastic bandage, and wherein a remaining portion of the elastic bandage does not obstruct a field of view of the wearer.
An aspect of the present invention provides a buckle for adjusting a length of a strap, the buckle including a buckle body extending in one direction, and a clamping portion formed in the buckle body and clamping the strap connected to one side of the respirator body, wherein the clamping portion may include an opening configured to pass through the buckle body, a fixing member connected to one end of the opening by a hinge, and a fixing protrusion protruding from a side wall of the other end of the opening, the fixing member configured to pivot about the hinge and press-fit into the opening being securely hooked on the fixing protrusion, and when the fixing member is fixed by the fixing protrusion, the strap is clamped by a side wall perpendicular to the other end of the opening and a side wall of the fixing member opposite to the side wall of the other end.
One or more embodiments of the present invention provide a buckle for adjusting the length of a strap and a respirator including the same, which can improve convenience in: adjusting a length of each elastic bandage, and performing a bi-directional length adjustment of each elastic bandage, and further wherein a remaining portion of the elastic bandage is removable from a wearer's field of view.
Drawings
Fig. 1 is a perspective view of a buckle and a respirator including the buckle according to embodiments of the present invention.
Fig. 2 is a perspective view illustrating an opened state of the buckle shown in fig. 1.
Fig. 3 is a perspective view illustrating a state in which the buckle of fig. 2 is closed to fix a bandage.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a sectional view taken along line B-B of fig. 3.
Fig. 6 is a view showing a state in which a pair of buckles is fastened to each other in fig. 1.
Fig. 7 is a perspective view showing an example of a respirator to which only one buckle of fig. 2 is applied.
Fig. 8 is a view showing another example of a respirator to which only one buckle of fig. 2 is applied.
Fig. 9 is a view illustrating a buckle according to another embodiment of the present invention.
Hereinafter, specific embodiments of the present invention for embodying the spirit of the present invention will be described in detail with reference to the accompanying drawings. It should be noted herein that for ease of illustration, the drawings are not drawn to scale.
Fig. 1 is a perspective view of a buckle and a respirator including the buckle according to embodiments of the present invention.
Referring to fig. 1, a respirator 1 having a buckle 30 for adjusting the length of straps 21 and 22 according to an embodiment of the present invention may include: a respirator body 10 that prevents the introduction of foreign matter into the respiratory organs when in contact with the wearer's face when the respirator 1 is worn; first and second straps 21 and 22 attached to either side of the respirator body 10; and one or more buckles 30 that grip at least one of the first and second straps 21, 22 and connect the first and second straps 21, 22 to each other at the back of the wearer's head.
The respirator body 10 may be formed to cover the mouth and nose of the wearer and may include projections so that the wearer does not experience discomfort. The respirator body 10 may include a filter for filtering air inhaled by the wearer. For example, the respirator body 10 may include: a filter structure 11 comprising one or more filter layers; and a support structure 12 that supports the filter structure 11 and maintains the shape. In this case, the filter structure 11 may have a sheet shape or other various shapes and configurations. In addition, the filter structure 11 may include a fluid permeable surface area through which air may pass when the wearer inhales or exhales. The filter structure 11 may be a particle capture filter or a gas and vapour filter. In some cases, the respirator body 10 may also include an exhalation valve (not shown) that is connected to the filter structure 11 and that is capable of quickly removing air exhaled by the wearer from the interior of the respirator 1. The exhalation valve may be formed in the center of the respirator body 10.
Both ends of the strap (the first strap 21 or the second strap 22) may be connected to one side portion of the respirator body 10, and may be formed to extend toward the rear of the wearer's head. In detail, when an external force is applied to the belts 21 and 22, the belts 21 and 22 may extend to twice or more times the total length of the belts 21 and 22, and the belts 21 and 22 may have elasticity to return to a relaxed state when the external force is released. The straps 21 and 22 at both sides of the respirator body 10 may extend to a predetermined length, respectively, may extend toward the rear of the wearer's head, and may be connected to each other by a buckle 30. In this case, tension is generated in the straps 21 and 22 by the restoring force of the straps 21 and 22 having elasticity, and the respirator body 10 can be brought into close contact with the wearer's face by the tension generated in the straps 21 and 22. For example, each of the belts 21 and 22 may have a length of about 25 to 60cm, a width of 5 to 10mm, and a thickness of 0.9 to 1.5 mm.
Additionally, the belts 21 and 22 may be made of various materials, such as thermoset rubber, thermoplastic elastomers, woven or knitted yarn/rubber combinations, and woven non-elastic components.
Meanwhile, the buckle 30 may connect the straps 21 and 22 at both sides of the respirator body 10 at the rear of the wearer's head. To this end, the buckle 30 may be fixed to a strap (first strap 21) attached to one side of the respirator body 10 by a clamping strap (first strap 21), and may be selectively attached to a strap (second strap 22) attached to the other side of the respirator body 10 by a prospective wearer.
In the current embodiment, the buckle 30 may be configured such that the position of the point at which the buckle 30 grips the belts 21 and 22 may be offset when the belts 21 and 22 are pulled relatively with respect to the buckle 30. That is, the relative positions of the buckles 30 holding the belts 21 and 22 and the belts 21 and 22 may be changed by holding the buckles 30 and pulling the belts 21 and 22 toward one side. In this case, although the belts 21 and 22 are pulled toward either side based on the buckle 30, the relative positions of the buckle 30 and the belts 21 and 22 may be changed.
The straps 21 and 22 are pulled using the buckle 30 so that the length of the straps 21 and 22 between the side portions of the respirator body 10 and the buckle 30 can be adjusted in both lateral directions. In detail, when the wearer pulls the free ends 213 and 223 of the straps 21 and 22 while holding the buckle 30, the length of the straps 21 and 22 between the side portions of the respirator body 10 and the buckle 30 may be reduced, and when the wearer pulls the portions 215 and 225 of the straps 21 and 22 between the respirator body 10 and the buckle, the length of the straps 21 and 22 between the side portions of the respirator body 10 and the buckle 30 may be increased. In some cases, the wearer pulls on the free ends 213 and 223 of straps 21 and 22 or portions 215 and 225 between the respirator body and the buckle so that the length of straps 21 and 22 between the side portions of respirator body 10 and buckle 30 may be optionally reduced or increased.
Thus, the length of the straps 21 and 22 at the rear of the wearer's head is freely adjustable in any direction. When the lengths of the straps 21 and 22 are adjusted, the tension generated in the straps 21 and 22 can be appropriately changed for the wearer while wearing the respirator 1. Thus, the respirator body 10 can effectively be in intimate contact with the wearer's face.
According to the current embodiment, a plurality of buckles 30 may be provided in one respirator 1. For example, as shown in fig. 1, a pair of buckles 30 that clamp the straps 21 and 22 at both sides of the respirator body 10 may be provided in one respirator 1. In this case, the pair of buckles 30 may be fastened to each other so that the straps 21 and 22 at both sides of the respirator body 10 may be connected to each other. The length of the bands 21 and 22 held by each of the pair of buckles 30 is adjusted so that the wearer can appropriately adjust the tension generated in the bands 21 and 22 for his own head size. The detailed structure for fastening the pair of buckles 30 will be described below.
Hereinafter, the detailed structure and operation of the buckle according to the above-described embodiment will be described with reference to fig. 2 to 6.
Fig. 2 is a perspective view illustrating an opened state of the buckle shown in fig. 1, and fig. 3 is a perspective view illustrating a state in which the buckle of fig. 2 is closed to fix a bandage. In addition, fig. 4 is a sectional view taken along line a-a of fig. 3, and fig. 5 is a sectional view taken along line B-B of fig. 3. And, fig. 6 is a view showing a state in which a pair of buckles is fastened to each other in fig. 1.
Referring to fig. 2 and 3, each buckle of the pair of buckles 30 may include a buckle body 100, a grip portion 200 formed in the buckle body 100, a fastening hook 300, and a fastening groove 400. Here, the grip portion 200, the fastening hooks 300, and the fastening grooves 400 may be formed side by side in a row on the buckle body 100. For example, the grip portion 200 may be formed at one side of the buckle body 100, and the fastening hooks 300 and the fastening grooves 400 may be formed at the other side of the buckle body 100. Such embodiments are shown in the drawings of the present specification. However, the relative positions of the grip portion 200, the fastening hooks 300, and the fastening grooves 400 are not limited thereto, and another type of arrangement may be formed in such a manner that the grip portion 200 is formed in the center of the buckle body 100, and the fastening hooks 300 and the fastening grooves 400 are formed at both sides of the grip portion 200.
The buckle body 100 may be made of synthetic resin, may extend in one direction, and may have a long shape having a predetermined length. In this case, the grip portion 200, the fastening hooks 300, and the fastening grooves 400 may be formed in a line in the longitudinal direction of the buckle body 100. In addition, the buckle body 100 may have a plate shape having a predetermined thickness to stably closely contact the rear of the wearer's head.
The clamping portion 200 may be formed in the buckle body 100 and may clamp the tapes 21 and 22. Further, when the tapes 21 and 22 are pulled in one direction in a state where the tapes 21 and 22 are nipped by the nip portion 200, the tapes 21 and 22 may be allowed to slide. The straps 21 and 22 can be fixed to the buckle 30 by the clip portions 200, and at the same time, the length of the straps 21 and 22 between the buckle 30 and the side portion of the respirator body 10 can be freely adjusted.
In detail, the grip portion 200 may include: an opening 210 formed through the buckle body 100; a fixing member 230 connected to one side of the opening 210 by a hinge 240; and a fixing protrusion 220 formed to protrude from a sidewall of the other side of the opening 210. Here, the fixing piece 230 press-fitted into the opening 210 may be hooked on the fixing protrusion 220, so that the fixing protrusion 220 may be fixed. The opening 210 may be a hole passing through the buckle body 100 of the buckle 30. For example, as shown in fig. 2 and 3, the opening 210 may be a through-hole having a rectangular cross section extending in one direction. The surface facing the inner space of the opening 210 may form a sidewall.
The hinge 240 connects one side of the opening 210 and one end of the fixing member 230, and the fixing member 230 pivots about the hinge 240 and thus can be inserted into the opening 210. In this case, the fixing member 230 may be easily pivoted about the hinge 240, so that no significant damage to the fixing member 230 or the hinge 240 may occur. For example, the hinge 240 may be a member formed of a flexible material.
The fixing member 230 may be a rectangular member extending in one direction, similar to the opening 210, which is a member having a shape and size insertable into the inner space of the opening 210. When the fixture 230 is inserted into the opening 210, the fixture 230 may be coupled to the fixing protrusion 220 formed to protrude from a sidewall of the opening 210. In this case, the fixing protrusion 220 may be formed at the opposite side of the end of the opening 210 connected to the hinge 240, and when the fixing member 230 is inserted into the inner space of the opening 210, the other end of the fixing member 230 at the opposite side of the end connected to the hinge 240 may meet the fixing protrusion 220. For example, the hinge 240 and the fixing protrusion 220 may be respectively provided at sidewalls of both ends in a longitudinal direction of the opening 210, and one end in the longitudinal direction of the fixing piece 230 (hereinafter, referred to as "fixing end of the fixing piece") may be connected to the hinge 240, and the other end in the longitudinal direction of the fixing piece 230 (hereinafter, referred to as "free end of the fixing piece") may meet the fixing protrusion 220. The free end of the fixing piece 230 may have a shape matching the shape of the fixing protrusion 220.
Referring to fig. 4, the inclined surface 220S may be formed by an end of the fixing protrusion 220. The inclined surface 220S may be formed in an inclined shape such that the fixing member 230 may be lowered toward a direction in which the fixing member 230 pivots into the opening 210. In this case, the protruding portion of the fixing protrusion 220 may have a V shape. To this end, a groove having a shape matching the V-shaped fixing protrusion 220 may be formed in the other end portion of the fixing piece 230.
In detail, in order to form the groove, the seating protrusion 232 may be formed on one surface of the fixing member 230. One surface on which the seating protrusion 232 is formed may be a wide surface (an inner surface of the fixing member) facing the opening 210 in a state where the fixing member 230 is opened, and an inclined surface 232S may be formed at an end of the seating protrusion 232 to be lowered toward the inner surface of the fixing member 230.
Meanwhile, the thickness of the fixing member 230 may be reduced as it becomes closer to the free end of the fixing member 230. The V-shaped groove may be formed by a surface (outer surface of the fixing member) facing outward (instead of the opening having a smaller thickness of the free end) and an inclined surface 232S of the end of the seating protrusion 232. That is, the fixing protrusion 220 may be inserted between the outer surface of the free end of the fixing member 230 and the inclined surface 232S of the end of the seating protrusion 232. Accordingly, the fixing piece 230 may be hooked on the fixing protrusion 220. The inclined surface 232S of the end of the seating protrusion 232 may be formed at an angle corresponding to the inclined surface of the fixing protrusion 220, so that the fixing protrusion 220 may be stably seated between the seating protrusion 232 and the outer surface of the fixing member 230.
Referring back to fig. 2 and 3, the fixing piece 230 pivots about the hinge 240, and thus can be changed from a state in which the fixing piece 230 is not hooked on the fixing protrusion 220 as shown in fig. 2 (hereinafter, referred to as an "open state") to a state in which the fixing piece 230 is hooked on the fixing protrusion 220 as shown in fig. 3 (hereinafter, referred to as a "closed state"). To this end, the outer surface of the fixing member 230 may be pressed by a finger. Here, the outer surface of the fixing member 230 may refer to a wide surface facing outward (not the opening 210) in a state in which the fixing member 230 is opened. When an assembler or a wearer presses the outer surface of the fixing member 230, the fixing member 230 may be inserted into the inner space of the opening 210, and the free end of the fixing member 230 is hooked on the fixing protrusion 220, so that the fixing member 230 may be fixed in a closed state.
In this case, the inclined surface 230S may be formed on the other end portion, i.e., the free end of the fixing member 230, to be lowered toward the inner surface of the fixing member 230. The inclined surface 230S may facilitate the movement of the fixture 230 on the fixing protrusion 220 when the fixture 230 is press-fitted into the opening 210. In detail, when the outer surface of the fixing piece 230 is pressed by a finger, the fixing piece 230 pivots such that the inclined surface 230S of the free end of the fixing piece 230 meets the inclined surface 220S of the fixing protrusion 220. In this state, when the fixing piece 230 is pressed more strongly, the inclined surface 230S of the free end of the fixing piece 230 moves over the inclined surface 220S of the fixing protrusion 220. Accordingly, the fixing protrusion 220 may be inserted into a groove formed between the inner surface of the fixing member 230 and the seating protrusion 232.
The above-described shapes and coupling structures of the fixing protrusion 220 and the fixing piece 230 are simple examples, and the present invention is not limited thereto. The shapes of the fixing protrusion 220 and the fixing member 230 may be changed in various ways according to the shape of the buckle 30 or according to need.
Meanwhile, when the fixture 230 is hooked on the fixing protrusion 220, a separation space having a predetermined distance may be formed between the side of the fixture 230 and the sidewall of the opening 210. Here, the separation space may be formed at a sidewall of the opening 210 where the hinge 240 or the fixing protrusion 220 is not formed, that is, between a sidewall in a lateral direction of the opening 210 and a side in a longitudinal direction of the fixing piece 230. To this end, the fixing member 230 may be formed such that the width thereof may be smaller than the width of the opening 210. The separation space may be formed at both sides of the fixing member 230, i.e., between both sides in the lateral direction of the fixing member 230 and the side walls of the opening 210 facing both sides. However, the present invention is not limited to this configuration.
When the fixing piece 230 is in the closed state, as shown in FIG. 3, the straps 21 and 22 connected to the respirator body 10 can be accommodated and inserted into the separation space formed at the side portion of the fixing piece 230. The tapes 21 and 22 may be inserted into the separation space and thus may be clamped by the clamping portion 200. The tapes 21 and 22 may be located at the side portions of the fixing member 230 in a state where the fixing member 230 is opened, and then the fixing member 230 may be press-fitted into the opening 210 so that the tapes 21 and 22 may be inserted into the separated space. The fixing member 230 is hooked on and fixed to the fixing protrusion 220 so that the bands 21 and 22 can be naturally inserted into the separation space.
In this case, the bands 21 and 22 may be clamped by end portions perpendicular to the end portions of the fixing pieces 230 coupled to the fixing protrusions 220. That is, the fixing protrusion 220 is engaged with the end of the fixing member 230 in the longitudinal direction, and the tapes 21 and 22 are clamped by the side of the fixing member 230 in the transverse direction and the side wall of the opening 210 facing the side of the fixing member 230. By this configuration, the coupling of the fixing projection 220 and the fixing member 230 can be prevented from being hindered by the belts 21 and 22. In addition, the coupling force of the fixing protrusion 220 and the fixing member 230 is not affected by the tension generated in the belts 21 and 22 or the external force applied to the belts 21 and 22, so that the fixing member 230 can be securely maintained in the closed state.
As described above, in a state where the tapes 21 and 22 are inserted into the separation space between the fixing member 230 and the sidewall of the opening 210, when the tapes 21 and 22 are pulled in either direction, the tapes 21 and 22 may slide in the direction. That is, when the free ends 213 and 223 of the straps 21 and 22 are pulled, the straps 21 and 22 may slide outward in the separation space, and the length of the free ends 213 and 223 may increase, and when the portions 215 and 225 of the straps 21 and 22 at the respirator body 10 are pulled, the straps 21 and 22 may slide toward the respirator body 10, and the length of the free ends 213 and 223 may decrease. Thus, the length of the straps 21 and 22 between the respirator body 10 and the buckle 30 can be increased or decreased. Accordingly, the wearer can appropriately adjust the tension generated in the straps 21 and 22 to allow the respirator body 10 to closely contact the face.
Referring to fig. 5, the width d of the separation space may be determined by the thickness t of the bands inserted into the separation space, so that the bands 21 and 22 may be inserted into the separation space, may be maintained to be clamped by the buckle 30, and may slide while pulling the bands 21 and 22. In this case, the width d of the separation space may be smaller than the thickness t of the belt. The width d of the separation space may be a size at which the straps 21 and 22 can be gripped against the tension generated in the straps 21 and 22 to maintain a state in which the respirator 1 is worn, but the straps 21 and 22 can slide with respect to the tension having a predetermined amount or more generated when the wearer pulls the straps 21 and 22. That is, since the width d of the separation space is smaller than the thickness t of the tape, the tapes 21 and 22 are tightly held by the fixing member 230 and the sidewall of the opening 210. Therefore, the frictional force generated therebetween is larger than the tensile force when supporting the respirator body 10 in close contact with the face portion, and therefore the buckle 30 can be used to fix the straps 21 and 22. However, the width d of the separation space is set such that the frictional force becomes smaller than the force generated by the wearer by intentionally pulling the belts 21 and 22, when the belts 21 and 22 are pulled, the belts 21 and 22 can slide and the lengths of the belts 21 and 22 can be adjusted.
In detail, the width d of the separation space may be smaller than the thickness t of the belt at a predetermined ratio. For example, the width d of the separation space may be about 90% of the thickness t of the belt. Alternatively, the width d of the separation space may be smaller than the thickness t of the belt by a predetermined amount. For example, the width d of the separation space may be less than about 0.2mm than the thickness t of the ribbon.
The relationship between the width d of the separation space and the thickness t of the belt may vary depending on the properties and materials of the belts 21 and 22. The properties and materials of the belts 21 and 22 may include the thickness t, elasticity, surface roughness, and material of the belts. The optimum relationship between the width d of the separation space and the thickness t of the belt can be found by repeatedly performing experiments on the specific belts 21 and 22.
Meanwhile, as shown in fig. 5, at least a portion of the side surface of the fixing member 230 may be formed as a curved surface 230C. When the tapes 21 and 22 are inserted into the separation space, the tapes 21 and 22 are in contact with the side surfaces of the fixing member 230 and the side walls of the opening 210. When the curved surface is formed in the side of the fixing member 230, the bands 21 and 22 may slide more easily when pulling the bands 21 and 22. By adjusting the location at which the curved surface 230C is formed, as well as the area and curvature of the curved surface C, the amount of minimum force required by the wearer to pull the straps 21 and 22 in order to adjust the length of the straps 21 and 22 may be reduced.
Referring to fig. 6 together with fig. 2 and 3, the fastening hook 300 may be formed to protrude from the buckle body 100 in one direction, and the fastening groove 400 may be formed to pass through the buckle body 100. Here, the fastening hooks 300 formed in one buckle 30 may be configured to be fastened to fastening grooves 400 formed in the other buckle 30. In detail, the fastening hook 300 may be formed such that the end of the fastening hook 300 may be bent to have an L-shaped cross section. When the fastening hook 300 is inserted into the fastening groove 400, the bent end of the fastening hook 300 may be hooked on the edge of the fastening groove 400, so that the fastening hook 300 may be maintained to be inserted into the fastening groove 400.
As shown in fig. 6, the fastening hooks 300 and the fastening grooves 400 respectively formed in the two buckles 30 are fastened to each other so that the pair of buckles 30 can be connected to each other. The pair of buckles 30 may respectively hold the straps 21 and 22 at both sides of the respirator body 10. That is, one buckle 30 may clamp the first strap 21, and the other buckle 30 may clamp the second strap 22. The fastening hooks 300 of the buckles 30 holding the first strap 21 are fastened to the fastening grooves 400 of the buckles 30 holding the second strap 22 so that the first and second straps 21 and 22 can be connected to each other, and the straps 21 and 22 connected at both sides of the respirator body 10 can be connected to each other along the rear of the head of the wearer when the wearer fixes the first and second straps 21 and 22 to two different buckles 30, respectively, and then places the respirator body 10 on its own face portion and fastens the two buckles 30 to each other at the rear of the head. Subsequently, the wearer can adjust the length of each of the first and second straps 21, 22.
According to the present embodiment, the both-side length adjustment of the straps 21 and 22 can be performed by pulling the straps 21 and 22 only in a state where the wearer wears the respirator 1. Therefore, the straps 21 and 22 can be freely adjusted in tightness without performing troublesome operations or taking off the respirator 1. Accordingly, the wearer can conveniently and appropriately adjust the tension generated in the straps 21 and 22 for his or her own head, and can provide convenience of the respirator 1 that can be conveniently worn by a person with a small head.
In addition, although the respirator body 10 is connected to the straps 21 and 22 at four points (upper left/lower left, upper right/lower right) so that the respirator body 10 can be stably supported, the length of the entire straps 21 and 22 can be adjusted using only two buckles 30. That is, since one of the straps 21 and 22 can be fixed using one buckle 30 and the other of the straps 21 and 22 can be fixed using the other buckle 30 in the current embodiment, by adjusting the length of each of the straps 21 and 22 using two buckles 30, respectively, the overall tension generated in the straps 21 and 22 connected to the respirator body 10 at four points can be changed. Therefore, in the respirator 1 according to the present embodiment, the tension generated in the straps 21 and 22 can be effectively adjusted by adjusting the lengths of the straps 21 and 22 at fewer points.
In addition, since in the present embodiment, the portion (buckle 30) that grips the straps 21 and 22 and allows length adjustment is located at the rear of the head when the respirator 1 is worn, the remaining portions (free ends) of the straps 21 and 22 are also located at the rear of the head of the wearer when the length of the straps 21 and 22 is reduced. Thus, the remaining portions of the straps 21 and 22 do not obstruct the wearer's vision or are not cumbersome, and thus the efficiency of the task may be improved.
Furthermore, because the buckles 30 are formed to fasten to each other, the straps 21 and 22 of the respirator body 10 may each be connected using the same two buckles 30. That is, a separate member is not required to connect the buckle 30, and members having different shapes with respect to the concavo-convex relationship are not necessarily required as the buckles 30 fastened to each other, so that only a single type of the buckle 30 must be produced. Therefore, manufacturing costs and production costs can be reduced.
Meanwhile, fig. 7 is a perspective view showing an example of a respirator to which only one buckle of fig. 2 is applied, and fig. 8 is a view showing another example of a respirator to which only one buckle of fig. 2 is applied. In addition, fig. 9 is a view illustrating a buckle according to another embodiment of the present invention.
Referring to fig. 7 and 8, the respirator 1a may include only a single buckle 30. In this case, the single buckle 30 may clamp one strap 21 of the first and second straps respectively connected to both sides of the respirator body 10. The other strap 22 may be secured to the buckle 30 in a different manner.
For example, as shown in fig. 7, the first strap 21 may be clamped by the clamping portion 200 of the buckle 30, and the second strap 22 may be hooked on the fastening hook 300 of the buckle 30. That is, in a state where both end portions of the second strap 22 are connected to one side of the respirator body 10, a portion between both end portions of the second strap 22 is hooked on the bent end portion of the fastening hook 300, like a hook, so that the second strap 22 can be fixed to the buckle 30. In this case, the buckle 30 does not necessarily include the fastening groove 400.
In another example, as shown in fig. 8, the first strap 21 may be clamped by the clamping portion 200 of the buckle 30, and the second strap 22 may be tied and tied to the fastening hook 400 of the buckle 30. In this case, the buckle 30 may not include a fastening hook.
In the above embodiment, the first strap 21 and the second strap 22 may be connected to each other using only a single buckle 30, and the free end 213 of the first strap 21 or the portion 215 between the respirator body 10 and the buckle 30 is selectively pulled, so that only the length of the first strap 21 may be adjusted, and the tension generated in the straps 21 and 22 may be appropriately adjusted for the size of the wearer's head.
Referring to fig. 9, in a buckle 30b according to another embodiment of the present invention, a through-hole 500 through which a strap may pass may be formed in a sidewall of a fastening groove 400. The through-hole 500 may have a shape of a gap formed when a portion of the sidewall of the fastening groove 400 is cut off. In addition, the width or diameter of the through-hole 500 may be equal to or greater than the thickness of each of the belts 21 and 22 so that the belts 21 and 22 can easily pass through the through-hole 500. The bands 21 and 22 may pass through the through-holes 500 and thus may be inserted into the fastening grooves 400. When the bands 21 and 22 are inserted into the fastening groove 400, the bands 21 and 22 may be hooked on the fastening groove 400. Even in the current embodiment, the buckle 30b may not include a fastening hook unlike in fig. 9.
In order to connect the first and second bands 21 and 22 using the buckle 30b according to the current embodiment, one of the first and second bands, for example, the first band 21, may be clamped by the clamping portion of the buckle 30b, and the other of the first and second bands, for example, the second band 22, may be hooked on the fastening groove of the buckle 30 b. Also, even in the current embodiment, the first and second bands 21 and 22 may be connected to each other using only a single buckle 30, and only the length of the first band 21 is adjusted so that the tension generated in the bands 21 and 22 may be appropriately adjusted for the size of the wearer's head.
The following is an enumeration of embodiments of the present invention.
Item 1 relates to a buckle for adjusting a length of a strap, the buckle including a buckle main body extending in one direction, and a clamping portion formed in the buckle main body and clamping the strap connected to one side of a respirator main body, wherein the clamping portion includes a fixing member connected to one end of an opening formed in the buckle main body, a hinge moving the fixing member by rotation, and a fixing protrusion provided at the other end of the opening, on which the fixing member is selectively hooked and fixed, the strap being inserted into a space between the fixing member and a side wall of the opening and clamped by the clamping portion when the fixing member is fixed by the fixing protrusion.
Item 2 relates to the buckle of item 1, wherein the clip portion allows selectively reducing or increasing the length of the strap between the buckle and the side portion of the respirator body by pulling on the free end of the strap or the portion between the respirator body and the buckle in a state in which the clip portion clips the strap.
Item 3 relates to the buckle of items 1 and 2, wherein a separation space is formed between a side wall of the opening and a side of the fixing member facing the side wall of the opening, and the band is inserted into the separation space.
Item 4 relates to the buckle of items 1 to 3, wherein the free end of the strap is pulled so that a length of the strap between the side portion of the respirator body and the buckle is reduced, and the portion between the respirator body and the buckle is pulled so that a length of the strap between the side portion of the respirator body and the buckle is increased, while maintaining the strap in a state of being inserted into the separation space.
Item 5 relates to the buckle of items 1 to 4, wherein the separation space has a width less than a thickness of the strap.
Item 6 relates to the buckle of items 1 to 5, wherein a width of the separation space is less than a thickness of the band by 0.2 mm.
Item 7 relates to the buckle of items 1 to 6, wherein the separation space has a width of 90% of the thickness of the band.
Item 8 relates to the buckle according to items 1 to 7, further comprising a seating protrusion formed on one surface of the fixing piece facing the opening and having one end on which an inclined surface that descends toward the fixing piece is formed, wherein the end of the fixing protrusion forms an inclined surface that descends in a direction in which the fixing piece pivots into the opening, and the fixing protrusion is inserted into a groove formed by the inclined surface of the seating protrusion and the one surface of the fixing piece.
Item 9 relates to the buckle of items 1 to 8, wherein an inclined surface is formed on the other end of the fixing piece and is lowered toward the opening, and the inclined surface of the fixing piece moves over the inclined surface of the fixing projection when the fixing piece is press-fitted into the opening.
Item 10 relates to the buckle of items 1 to 9, further comprising: a fastening groove formed through the buckle body; and a fastening hook formed to protrude from the buckle body and having an end bent to have an L-shaped cross section.
Item 11 relates to the buckle of items 1 to 10, wherein the two buckles are fastened to each other when the fastening hooks of one buckle are hooked on the fastening grooves of the other buckle.
Item 12 relates to a respirator that comprises: a respirator body that contacts a wearer's face when the respirator is worn; first and second straps connected to either side of the respirator body; and one or more buckles that clamp the first strap to connect the first strap and the second strap at a rear of the wearer's head, wherein the one or more buckles clamp the first strap in such a way that: the length of the first strap between the side portion of the respirator body and the buckle is selectively reduced or increased by pulling on the free end of the first strap or the portion between the respirator body and the buckle.
Item 13 the respirator according to item 12, wherein each of the one or more buckles includes a buckle body extending in one direction and a holding portion formed in the buckle body and holding the strap attached to one side of the respirator body, wherein the holding portion includes a fixing member attached to one end of an opening formed in the buckle body, a hinge that moves the fixing member by rotation, and a fixing projection provided at the other end of the opening, on which the fixing member is selectively hooked and fixed, the strap being inserted into a space between the fixing member and a side wall of the opening and held by the holding portion when the fixing member is fixed by the fixing projection.
Item 14 relates to the respirator of items 12 and 13, wherein a separation space is formed between the side wall of the opening and the side of the securing member facing the side wall of the opening, and the strap is inserted into the separation space.
Item 15 relates to the respirator of items 12 to 14, wherein the separation space has a width that is less than the thickness of the strap.
Item 16 relates to the respirator of items 12 to 15, wherein the one or more buckles are provided as a pair of buckles, and the pair of buckles are fastened to each other in a state in which one buckle of the pair of buckles holds the first strap and the other buckle of the pair of buckles holds the second strap, such that the first strap and the second strap are connected to each other at a rear of the wearer's head.
Item 17 relates to the respirator of items 12 to 16, wherein each buckle of the one or more buckles comprises: a buckle body extending in one direction; a fastening groove formed through the buckle body; and fastening hooks formed to protrude from the buckle bodies and having ends bent to have an L-shaped cross section, and the pair of buckles are fastened to each other when the fastening hooks of one buckle are hooked on the fastening grooves of the other buckle.
Item 18 relates to the respirator of items 12 to 17, wherein the one or more buckles connect the first strap with the second strap at a back of the wearer's head when the first strap is clamped at one side of the one or more buckles by the one or more buckles and the second strap is secured to the other side of the one or more buckles.
Item 19 relates to the respirator of items 12-18, wherein each buckle of the one or more buckles further comprises: a buckle body extending in one direction; a clamping portion formed at one side of the buckle main body and clamping the first strap; and a fastening hook formed to protrude from the buckle body at the other side thereof, having an end bent to have an L-shaped cross section, and a second strap hooked on the fastening hook and fixed to one or more buckles.
Item 20 relates to the respirator of items 12 to 19, wherein each of the one or more buckles further comprises a through hole formed in a side wall of the fastening groove, and the second strap passes through the through hole, is inserted into the fastening groove, is hooked over the fastening groove, and is secured to the one or more buckles.
As described above, the buckle for adjusting the length of the strap and the respirator including the buckle have been described with reference to the specific embodiments. However, the specific embodiments are merely examples, and the present invention is not limited thereto but should be construed to have the maximum scope based on the basic spirit disclosed. One of ordinary skill in the art may implement an unspecified mode by combining/substituting the disclosed embodiments. However, this does not depart from the scope of the present invention. While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (17)

1. A buckle for adjusting a length of a strap, the buckle comprising:
a buckle body extending in one direction; and
a clamping portion formed in the buckle body and clamping a strap connected to one side of a respirator body,
wherein the clamping portion comprises:
a fixing member connected to one end of an opening formed in the buckle body;
a hinge moving the fixing member by rotating; and
a fixing protrusion provided at the other end of the opening and selectively hooking and fixing the fixing piece in a longitudinal direction,
the band is inserted into a separation space formed between a side wall of the opening and a side wall of the fixing piece facing the side wall of the opening, and is sandwiched by the side wall of the fixing piece and a side wall of the opening facing the side wall of the fixing piece in a lateral direction when the fixing piece is fixed by the fixing protrusion, and
the strap is tightly held by the fixing piece and the side wall of the opening, a frictional force generated between the fixing piece and the side wall of the opening is larger than a tension force when supporting a respirator body close-contact face portion, and a width of the separation space is set so that the frictional force becomes smaller than a force generated by intentionally pulling the strap, so that the strap can slide and a length of the strap can be adjusted when pulling the strap.
2. The buckle of claim 1, wherein in a state in which the clamping portion clamps the strap, the clamping portion allows a length of the strap between a side portion of the respirator body and the buckle to be selectively reduced or increased by pulling a free end of the strap or a portion between the respirator body and the buckle.
3. The buckle of claim 1, wherein the strap is maintained in a state of being inserted into the separation space, and the free end of the strap is pulled such that the length of the strap between the side portion of the respirator body and the buckle is decreased, and the portion between the respirator body and the buckle is pulled such that the length of the strap between the side portion of the respirator body and the buckle is increased.
4. The buckle of claim 1, wherein a width of the separation space is less than a thickness of the band.
5. The buckle of claim 4, wherein the width of the separation space is less than the thickness of the band by 0.2 mm.
6. The buckle of claim 4, wherein the width of the separation space is 90% of the thickness of the band.
7. The buckle according to claim 1, further comprising a seating protrusion formed on one surface of the fixing piece facing the opening and having one end portion on which an inclined surface is formed to be lowered toward the fixing piece,
wherein an end of the fixing projection forms an inclined surface, and the inclined surface is lowered in a direction in which the fixing piece is pivoted into the opening, and
the fixing protrusion is inserted into a groove formed through the inclined surface of the seating protrusion and the one surface of the fixing piece.
8. The buckle of claim 7, wherein an inclined surface is formed on the other end of the fixing member and is lowered toward the opening, and
the inclined surface of the fixing piece moves over the inclined surface of the fixing projection when the fixing piece is press-fitted into the opening.
9. The buckle of claim 1, further comprising:
a fastening groove formed through the buckle body; and
a fastening hook formed to protrude from the buckle body and having an end bent to have an L-shaped cross section.
10. The buckle of claim 9, wherein two buckles are fastened to each other when the fastening hooks of one buckle are hooked on the fastening grooves of the other buckle.
11. A respirator that comprises:
a respirator body that contacts a wearer's face when the respirator is worn;
first and second straps connected to either side of the respirator body; and
one or more buckles that clamp the first strap to connect the first strap and the second strap at a rear of the wearer's head, each buckle of the one or more buckles comprising: a buckle body extending in one direction; and a clamping portion formed in the buckle body and clamping a strap connected to one side of the respirator body, wherein the clamping portion includes:
a fixing member connected to one end of an opening formed in the buckle body;
a hinge moving the fixing member by rotating; and
a fixing protrusion provided at the other end of the opening and selectively hooking and fixing the fixing piece in a longitudinal direction, and the band is inserted into a separation space formed between a side wall of the opening and a side wall of the fixing piece facing the side wall of the opening and is clamped by the side wall of the fixing piece in a lateral direction and a side wall of the opening facing the side wall of the fixing piece when the fixing piece is fixed by the fixing protrusion,
wherein the strap is tightly held by the fixing piece and the side wall of the opening, a frictional force generated between the fixing piece and the side wall of the opening is larger than a tension force when supporting a respirator body close-contact face portion, and a width of the separation space is set so that the frictional force becomes smaller than a force generated by intentionally pulling the strap, so that the strap can slide and a length of the strap can be adjusted when pulling the strap.
12. The respirator of claim 11, wherein the separation space has a width that is less than the thickness of the strap.
13. The respirator of claim 11, wherein the one or more buckles are provided as a pair of buckles, and the pair of buckles are fastened to each other with one buckle of the pair of buckles gripping the first strap and another buckle of the pair of buckles gripping the second strap, such that the first and second straps are connected to each other at a rear of the wearer's head.
14. The respirator of claim 13, wherein each buckle of the one or more buckles comprises:
a fastening groove formed through the buckle body; and
a fastening hook formed to protrude from the buckle body and having an end bent to have an L-shaped cross section, and
the pair of buckles are fastened to each other when the fastening hooks of one buckle are hooked on the fastening grooves of the other buckle.
15. The respirator of claim 11, wherein the one or more buckles connect the first strap and the second strap at a back of the wearer's head when the first strap is clamped at one side of the one or more buckles by the one or more buckles and the second strap is secured to the other side of the one or more buckles.
16. The respirator of claim 15, wherein the clip portion is formed at one side of the buckle body, each buckle of the one or more buckles further comprising:
a fastening hook formed to protrude from the buckle body at the other side thereof and having an end bent to have an L-shaped cross section,
wherein the second strap is hooked over the fastening hooks and secured to the one or more buckles.
17. The respirator of claim 16, wherein each buckle of the one or more buckles further comprises a through-hole formed in a side wall of a fastening groove, and
the second strap passes through the through-hole, is inserted into the fastening groove, is hooked on the fastening groove, and is fixed to the one or more buckles.
CN201580070220.4A 2014-12-26 2015-12-17 Buckle for adjusting length of strap and respirator including the same Expired - Fee Related CN107105803B (en)

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KR10-2014-0190138 2014-12-26
PCT/US2015/066227 WO2016106054A1 (en) 2014-12-26 2015-12-17 Buckle for adjusting the length of strap and respirator comprising the same

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CN107105803A (en) 2017-08-29
WO2016106054A1 (en) 2016-06-30
KR20170089965A (en) 2017-08-04
KR20160080821A (en) 2016-07-08

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