CN220404256U - Flexible welding mask - Google Patents

Abstract

The application discloses a flexible welding mask, include: a window assembly; a flexible boot detachably connected by said window assembly; and a strap coupled to the flexible boot, the window assembly comprising: a distal housing, a proximal housing, and a flip pivotally connected to the distal housing, the distal housing being provided with a contact edge, the proximal housing being provided with a contact edge and a proximal edge spaced from the contact edge, a portion of the flexible boot being sandwiched between the contact edge of the distal housing and the contact edge of the proximal housing, the proximal edge of the proximal housing having a curved profile, and the curved profile being formed with a notch that faces downward when the flexible welding mask is worn.

Description

Flexible welding mask

Technical Field

The present application relates generally to flexible welding masks.

Background

Unlike traditional hard welding mask, the main part of flexible welding mask is because of easy folding collection, be fit for carrying out welding operation by the user in narrow and small space, portable transportation, can regard as the welding staff to operate the protective tool commonly used in narrow and small space usually.

Currently, a variety of flexible welding masks are commercially available. One type of flexible welding mask is for portability and portability reasons, where the flexible shielding material of the flexible welding mask can only cover the face of the user. In the actual welding operation, the head of the user may be burned due to the insufficient coverage area. In addition, such flexible welding masks, when worn by a user, have a flexible barrier material that is too close to the user's face, which can cause the user to breathe hard or the face to experience discomfort from rubbing with the flexible barrier material.

Another type of prior art flexible welding mask, while designed to wrap the head of a user mostly with a flexible shielding material, may still be too close to the face of the user, resulting in dyspnea or discomfort to the face due to friction of the flexible shielding material.

Another type of prior art flexible welding mask uses a headband design that, although not causing the flexible shielding material to cover the user's face, itself can cause excessive component parts, and in addition, because the connection of the viewing window to the headband can cause an excessive distance between the viewing window and the user's eyes, thereby causing a reduction in the viewable area of the eyes through the viewing window to the outside.

Disclosure of Invention

Aiming at the problems, the application provides a novel flexible welding mask which can ensure that the head of a user is effectively protected, the observation window is close to the eyes of the user as much as possible, and the wearing requirement of comfortable breathing can be met.

According to one aspect of the present application, there is provided a flexible welding mask comprising:

a window assembly;

a flexible boot removably coupled to the window assembly; and

a strap coupled to the flexible boot, the window assembly comprising:

a distal housing, a proximal housing, and a flip pivotally connected to the distal housing, the distal housing being provided with a contact edge, the proximal housing being provided with a contact edge and a proximal edge spaced from the contact edge, a portion of the flexible boot being sandwiched between the contact edge of the distal housing and the contact edge of the proximal housing, the proximal edge of the proximal housing having a curved profile, and the curved profile being formed with a notch that faces downward when the flexible welding mask is worn. At the same time, the flexible boot does not lie too close to the face when worn because of the presence of the spaced apart contact and proximal edges of the proximal housing, causing discomfort.

In accordance with the present application, the notch of the curved profile at the proximal edge may be configured such that when the flexible welding mask is worn on the head of a user, a bridge of the nose or a portion of the nose of the user may be just received within the space of the notch, thereby enabling the window assembly to be positioned closer to the face of the user, particularly to the eyes of the user. Because the window assembly is closer to the eye, the field of view can be expanded when the user looks outward through the window assembly to facilitate viewing the weld at the weld site.

Optionally, the proximal edge of the proximal shell is curved in a C-shape in such a way that the left and right ends of the proximal edge are farther from the flip cover than the middle portion, and the notch of the C-shape is directed downward when the flexible welding mask is worn.

According to the present application, the proximal edge of such a curved C-shape may more closely conform to the contours of the human face, thereby ensuring that the window assembly may be closer to the human face when the flexible welding mask is worn by a user.

Optionally, a spacer wall is formed between the contact edge of the proximal housing and the proximal edge of the proximal housing, at least one aperture being formed in the spacer wall.

According to the present application, since the contact edge is spaced apart from the proximal edge and the partition wall therebetween is formed with the orifice, it is ensured that the air flow can smoothly flow after the user wears the flexible welding mask.

Optionally, an eye patch made of a soft material or soft sweat absorbing material is detachably mounted on a proximal edge of the proximal housing, the eye patch being shaped to follow the proximal edge. Thus, when the flexible welding mask is worn by a user, the eye cover ensures that the user feels more comfortable when contacting the face of the user, and the flexible welding mask is convenient to wear for a long time to provide protection. In addition, the eyeshade can absorb sweat on the face of a human body, so that discomfort caused by long-time operation is reduced.

Optionally, the contact edge of the proximal housing and the contact edge of the distal housing are both curved in such a way that the left and right ends of the contact edge are farther from the flip cover than the middle portion. The curved configuration of the contact edge ensures that the window assembly, after being connected to the flexible boot, conforms more closely to the contours of the face, thereby ensuring that the window assembly is adjacent to the face.

Optionally, the flexible boot has a portion that is positioned below the window assembly when the flexible welding mask is worn and is formed to protrude distally or be flat.

Optionally, an eye protection assembly can be removably mounted within the flip cover.

Optionally, the flip cover is pivotable between a closed position and a flipped up position, wherein in the closed position, the eye-shield assembly obstructs an interior hollow space of the window assembly defined by the distal housing and the proximal housing; in the flipped up position, the interior hollow space is unobstructed by the eye-shield assembly.

Optionally, the flip cover is formed with side walls to define a space for mounting the eye protection assembly.

Optionally, at least one pair of grooves is formed in a side wall of the flip cover, two of the pair of grooves being opposite each other to receive a projection of a snap spring mounted in a space of the flip cover, the snap spring being configured to contact the eye-protection assembly to secure it within the space of the flip cover.

Optionally, the at least one pair of grooves includes a pair of first grooves and a pair of second grooves, the pair of first grooves being further from the proximal housing than the pair of second grooves when the flip cover is in the closed position. The design of the different grooves ensures that eye protection components with different thicknesses can be installed in the flip cover, thereby providing more choices for eye protection of users.

Optionally, the eye protection assembly includes at least one of an automatic darkening filter, a welded protective lens having a fixed light transmission, and a laser protective sheet.

Optionally, a side wall of the flip cover extends at least partially into the distal housing when the flip cover is in the closed position. The side wall of the flip cover stretches into the far side shell to ensure tightness, so that arc light or splashes generated by welding cannot enter the window assembly through the flip cover, and human eyes are injured.

Optionally, the strap is adjustable in length.

Optionally, the strap comprises two straps, each of which has one end attached near the left and right free edges of the flexible boot and the other end detachably connected to each other via a buckle.

Optionally, the straps include two straps of which the length can be adjusted, a first strap of the two straps being connected near the left and right free edges of the flexible protective cover, and a second strap of the two straps being connected at one end to the top of the flexible protective cover when the flexible welding mask is worn, and at the other end to the first strap in a T-shaped manner via a buckle. According to the present application, the straps may ensure that the weight borne by the user's head when the flexible welding mask is worn by the user is reduced.

Optionally, the flexible welding mask further comprises a binding structure provided for the window assembly, such that the window assembly can be secured independently of the flexible protective cover via the binding structure when the flexible welding mask is worn. According to the application, the window assembly can be independently fixed to the head of the user by adopting the binding structure without adopting the binding belt, so that the head load of the user can be further lightened, and the window assembly is firmly attached to the face under any working posture of the user, so that reliable eye protection is provided.

Optionally, the binding structure comprises a fastening strap connected to the left and right ends of the proximal edge of the proximal housing via two length-adjustable suspension straps, respectively.

Optionally, a sling connection structure is formed at each of the left and right ends of the proximal edge of the proximal housing, each sling connection structure being formed with a connection post, a respective one of the sling being rotatably and detachably connected to the respective connection post via a connection hook.

Optionally, each connecting hook is pivotally connected with an additional buckle, to which the respective sling is connected, and the axis of rotation of the connecting hook and the axis of pivot of the additional buckle are perpendicular to each other. The combination of the attachment hook and the additional buckle ensures two-dimensional adjustment of the sling relative to the window assembly to better accommodate users of different facial contours.

Optionally, each sling attachment structure includes a first sling attachment member and a second sling attachment member that are removably pivotally connected to one another, the first sling attachment member being integrally formed on the proximal edge, the attachment post being formed in the second sling attachment member, and a pivot axis between the first and second sling attachment members being perpendicular to the rotational axis of the attachment hanger.

By adopting the technical means, the window assembly can be closer to the eyes of a user, so that the view field range for observing through the window assembly is enlarged. In addition, the window assembly is designed to generally follow the contours of the face and the window assembly can contact the face via the eye shields to improve wearing comfort.

Drawings

The principles and aspects of the present application may be more fully understood from the following detailed description taken in conjunction with the accompanying drawings. It is noted that the scale of the drawings may be different for clarity of illustration purposes, but this does not affect the understanding of the present application. In the drawings:

FIG. 1 is a perspective view schematically illustrating a flexible welding mask according to one embodiment of the present application;

FIG. 2 is a perspective view, schematically illustrating a flexible welding mask, according to one embodiment of the present application, wherein the flexible welding mask is worn on a user's head without being mated to a respiratory apparatus;

FIG. 3 is an exploded perspective view, schematically illustrating a flexible welding mask, according to an embodiment of the present application;

FIG. 4 is a perspective view schematically illustrating a circlip and flip cap of a flexible welding mask according to an embodiment of the present application;

FIG. 5A is a perspective view schematically illustrating a window assembly of a flexible welding mask with a flip cover of the window assembly in a closed position, according to an embodiment of the present application;

FIG. 5B is a perspective view schematically illustrating a window assembly of a flexible welding mask according to an embodiment of the present application, with a flip cover of the window assembly in a flipped up position;

FIG. 6A is a perspective view schematically illustrating a bracket employed in a window assembly of a flexible welding mask according to an embodiment of the present application;

FIG. 6B is a cut-away perspective view, schematically illustrating the stent taken along line A-A in FIG. 6A;

FIG. 7 is a top view of the window assembly of FIG. 5A;

FIG. 8 is a perspective view schematically illustrating a binding structure of a fixed window assembly according to one embodiment of the present application;

FIG. 9A is a schematic diagram schematically illustrating one manner of attachment of a strap of a flexible welding mask according to an embodiment of the present application;

FIG. 9B is a schematic diagram schematically illustrating another connection of a strap of a flexible welding mask according to an embodiment of the present application;

FIG. 10 is a perspective view schematically illustrating a sling attachment structure of a fixed window assembly according to another embodiment of the present application, wherein dashed circles A and B in FIG. 10 represent enlarged schematic views of additional buckles of the sling attachment structure in different positions;

FIG. 11A is a perspective view in which a dashed circle portion schematically illustrates a sling attachment structure of a fixed window assembly in accordance with another embodiment of the present application, and in which a second sling attachment member of the sling attachment structure is shown separately from the dashed circle portion in a different view angle for clarity;

FIG. 11B schematically illustrates a first sling attachment feature of the sling attachment structure in the dashed circled portion of FIG. 11A; and is also provided with

Fig. 11C schematically illustrates the first and second sling attachment members of the sling attachment structure in the dashed circle portion of fig. 11A, already installed in place.

Detailed Description

Features that are structurally identical or functionally similar are denoted by the same reference numerals in the various figures of the present application.

Fig. 1 schematically illustrates a flexible welding mask 100 according to one embodiment of the present application. Flexible welding helmet 100 generally includes a window assembly 20, a flexible boot 10 coupled to window assembly 20, and a strap 40 for maintaining flexible boot 10 secured relative to the head of a user. Optionally, the flexible welding mask 100 also includes a fastening strap 60 (not shown in fig. 1, shown in fig. 2 and 3) for maintaining the window assembly 20 stationary relative to the user's head.

Fig. 2 and 3 are perspective views schematically illustrating two different ways of using the flexible welding mask 100 to be worn on the head of a user, respectively, wherein in the drawings, light colored lines represent hidden by the flexible welding mask 100, and wherein in fig. 2, the flexible welding mask 100 is used alone.

According to embodiments of the present application flexible boot 10 may be manufactured from a soft material suitable for folding and having certain protective properties, such as (artificial or natural) leather, fire-resistant cloth, etc. For example, flexible boot 10 may be sewn from a plurality of such flexible materials. As shown, after the flexible welding mask 100 is secured in place relative to the user's head, the window assembly 20 is positioned generally in front of the user's eyes. In accordance with an embodiment of the present application, the portion of flexible boot 10 below window assembly 20 is formed to protrude distally, as shown in FIG. 2.

In the context of the present application, the term "distal" refers to the side or direction of the flexible welding mask 100, or a portion thereof, away from the user's head after the flexible welding mask 100 is properly worn by the user's head; conversely, the term "proximal" refers to the direction or side of the flexible welding mask 100, or a portion thereof, that is adjacent to the head of a user after the flexible welding mask 100 is properly worn by the head of the user.

Because the portion of flexible boot 10 below window assembly 20 is formed to protrude distally, the portion of flexible welding mask 100 that protrudes distally after being worn by a user of flexible boot 10 may conveniently provide the user with a wearing option for additional appliances.

According to an alternative embodiment of the present application, the portion of flexible boot 10 below window assembly 20 may also be formed to be flat, i.e., not protruding distally, and accordingly reduce the overall weight of the flexible mask and reduce the head burden when worn.

In accordance with an embodiment of the present application, the window assembly 20 is adapted to be viewed outwardly through the window assembly 20 by the human eye after the user wears the flexible welding mask 100 in place (as shown in fig. 2 and 3). As shown in fig. 3, 5A and 5B, window assembly 20 includes a distal housing 21, a proximal housing 22, and a flip cover 23 pivotally connected to distal housing 21. A plurality of receiving holes 21a are formed in the distal housing 21, and a plurality of through holes 22a are formed in the proximal housing 22. An opening 11 having a shape substantially corresponding to the hollow space surrounded by each of the distal housing 21 and the proximal housing 22 is formed in the flexible boot 10, and a plurality of perforations 12 are formed near the edge of the opening 11. Further, distal housing 21 is also formed with a contact edge 212 and a side wall 211 extending distally relative to contact edge 212, said side wall 211 being configured to essentially define a hollow space of said distal housing 21, said contact edge 212 being configured to be in contact with flexible boot 10. The proximal housing 22 is formed with an extension wall 221, a contact edge 222 surrounding the extension wall 221, a partition wall 223 extending from an inner side of the contact edge 222, and a proximal edge 224 connected to the partition wall 223 so as to be spaced apart from the contact edge 222 via the partition wall 223. As one non-limiting example, the protruding wall 221 and the contact edge 222 are configured to completely surround the hollow space of the proximal housing 22, while the proximal edge 224 is disposed in a notched curved profile. The notch of the profile faces downward when the flexible welding mask 10 is worn by a user so as to be able to surround the vicinity of the bridge of the nose of the user. According to a preferred embodiment of the present application, the proximal edge 224 is provided in a C-shaped manner, wherein the C-shaped notch faces or surrounds the vicinity of the bridge of the nose of the user when the flexible welding mask 100 is worn by the user.

When assembled, contact edge 222 of proximal housing 22 is in contact with flexible boot 10 such that protruding wall 221 passes through opening 11 of flexible boot 10 and each through-hole 22a of proximal housing 22 is aligned with each perforation 12 of flexible boot 10. At the same time, contact edge 212 of distal housing 21 is in contact with flexible boot 10 such that flexible boot 10 is sandwiched between distal housing 21 and proximal housing 22, protruding wall 221 of proximal housing 22 protrudes into the hollow space of distal housing 21, and each receiving hole 21a of distal housing 21 is aligned with each perforation 12 of flexible boot 10 and each through hole 22a of proximal housing 22. In this way, set screws may be threaded into the aligned holes to secure proximal housing 22 and distal housing 21 together with flexible boot 10.

In an alternative embodiment, not shown, proximal housing 22, distal housing 21, and flexible boot 10 may be secured together in other suitable ways. For example, proximal housing 22, distal housing 21, and flexible boot 10 may be secured to one another by adhesive means. For another example, proximal housing 22 and distal housing 21 may also be snapped onto each other along the edges of opening 11 of flexible boot 10, sandwiching flexible boot 10 between proximal housing 22 and distal housing 21.

As shown in fig. 4, the folder 23 is formed with a sidewall 231 to define a hollow space of the folder 23. A pivot structure 232, for example, two pivot structures 232, is formed on the side wall 231. Accordingly, a mating pivot structure 213 is formed on the side wall 211 of the distal housing 21, near the distal free end of the distal housing 21. For example, two pivot structures 232 may be mounted in alignment between mating pivot structures 213 of distal housing 21 to provide a pivot axis therethrough to ensure that flip cover 23 is pivotally connected to distal housing 211.

According to one non-limiting example of the present application, after the assembled flexible welding mask 100 is worn by a user, the two pivot structures 232 of the flip cover 23 are located on the top side portions of the side walls 231, such that the flip cover 23 may more reliably sit against the distal free end of the distal housing 21 under the force of gravity, i.e., the flip cover 23 is in a closed position relative to the distal housing 21, as shown in fig. 5A. As a non-limiting example, in this closed position, the side wall 231 of the flip cover 23 may extend at least partially into the hollow space of the distal housing 21 such that there is a degree of overlap between the side wall 231 and the protruding wall 221, thereby ensuring that welding glare or spatter does not enter the distal housing 21 through the gap between the two. When needed, the user can lift the flip cover 23 so that it can pivot to the flipped-up position as shown in fig. 5B, thereby facilitating the naked eye observation of the outside by the user as needed. To facilitate the pivoting of the flip cover by the user, lugs 234, for example two lugs 234 in the illustration, are formed on the flip cover 23. The tab 234 is conveniently accessible to a user even in the closed position.

According to one embodiment of the present application, an eye protection assembly can be removably mounted within the flip cover 23. As one non-limiting example, the eye protection assembly of the present application may include an automatic darkening filter 24. For example, such an automatic darkening filter 24 may be any type of commercially available automatic darkening filter that is capable of automatically darkening during a welding process to provide eye protection for a user. In an alternative embodiment, the automatic darkening filter 24 may also be replaced by a welded protective lens having a fixed light transmission. In an alternative or additional embodiment, the eye protection assembly of the present application may include a distally located laser protection sheet in addition to the automatic darkening filter 24 or a welded protective lens having a fixed light transmission to protect the user's eyes from laser injury during laser welding. For example, the automatic darkening filter 24 may be disposed within a stand 25. As shown in fig. 6A and 6B, the holder 25 has a T-shaped cross section, so that the automatic darkening filter 24 is surrounded by an edge 25a of the holder 25 within the holder 25. Furthermore, on the opposite side of the support 25, a transparent outer protective sheet 26 is surrounded by the opposite edge 25b of the support 25. Additionally, an inner protective sheet 27 may be attached to the automatic darkening filter 24 and surrounded by the edge 25a of the bracket 25. A groove is formed in the side wall 231 of the flip cover 23. For example, the grooves include a pair of first grooves 23a and a pair of second grooves 23b. The pair of first grooves 23a are opposite to each other in the side wall 231, and the pair of second grooves 23b are opposite to each other in the side wall 231. In fig. 4, only one of the pair of first grooves 23a is visible, the other being hidden; and only one of the pair of second grooves 23b is visible and the other is hidden. When the flip cover 23 is in the closed position, the plane in which the pair of first grooves 23a lie is farther from the proximal housing 22 than the plane in which the pair of second grooves 23b lie.

A snap spring 28 is also mounted in the flip cover 23. The clip 28 is configured to removably retain the bracket 25 carrying the automatic darkening filter 24, the inner and outer protective sheets 26, 27 within the flip cover 23. For example, the clip 28 is formed by a metal elastic wire material enclosing a substantially rectangular frame, and the area of the rectangular frame is slightly smaller than the area of the inner protection sheet 27 and/or the automatic darkening filter 24. Further, the rectangular frame has two protrusions 281 opposite to each other. The two protrusions 281 may be just accommodated in the pair of first grooves 23a or the pair of second grooves 23b. In the embodiment described, the flap 23 is formed with a free flange 233, the free flange 233 surrounding an opening area slightly smaller than the area occupied by the bracket 25, so that the bracket 25 carrying the automatic darkening filter 24, the inner and outer protection plates 26, 27 can rest on the free flange 233. Thereafter, the clip springs 28 can be respectively snapped into the pair of second grooves 23b via the protrusions 281 thereof. The distance (axial distance) of the second grooves 23b from the free flange 233 is designed such that, when the snap springs 28 are snapped into the pair of second grooves 23b via the protrusions 281 thereof, the snap springs 28 can just contact the inner protective sheet 27 to axially fix the holder 25 carrying the automatic darkening filter 24, the inner and outer protective sheets 26, 27 within the flip cover 23. In this way, the bracket 25 and its automatic darkening filter 24 may remain stationary relative to the flip 23, regardless of how the flip 23 pivots relative to the distal housing 21.

The design of the first recess 23a and the second recess 23b in the flip cover 23 is to ensure that components of eye-shielding assemblies of different thickness can be accommodated in the flip cover 23. For example, when the eye protection assembly employs only the welding protection lens having the fixed light transmittance according to the site protection requirement, since the thickness is reduced, after the welding protection lens having the fixed light transmittance can be mounted in the flip cover 23 in this case, the clip 28 can be respectively snapped into the pair of first grooves 23a via the protrusions 281 thereof, so that the clip 28 fixes the welding protection lens as the eye protection assembly in the flip cover 23. This design of the first recess 23a and the second recess 23b ensures that eye protection components of different thickness can be accommodated in the flip cover 23.

According to one embodiment of the present application, the contact edge 212 of the distal housing 21 and the contact edge 222 of the proximal housing 22 are formed such that when the flexible welding mask 100 is worn normally, the contact edge 212 and the contact edge 222 are curved when viewed from above, so as to more closely approximate the contours of the face or forehead to nose vicinity of the user. In addition, the proximal edge 224 of the proximal shell 22 is also formed to be curved (e.g., when the flexible welding mask 100 is worn normally, the proximal edge 224 is curved when viewed from above) to more closely follow the contours of the user's face or forehead to nose vicinity, and the C-shaped notch leaves sufficient accommodation for the bridge of the nose. According to embodiments of the present application, the design of the curved C-shaped proximal edge 224 spaced from the contact edge 222 may ensure that the contact edge 222 is able to be closer to the nose of the user or the automatic darkening filter 24 in the flip cover 23 in the closed position may be closer to the human eye when the flexible welding mask 100 is worn by the user. Since the cover 23 or the automatic darkening filter 24 in the cover 23 can be positioned closer to the human eye, the viewable area of the human eye through the window assembly to the outside is increased. In the context of the present application, the term "curved C-shape" means that the shape of the C-shape does not lie in or is parallel to a plane, in which the shape of the C-shape actually lies is curved.

In accordance with embodiments of the present application, a C-shaped eye shield 50 made of a soft material or soft sweat absorbing material may additionally be provided on the proximal edge 224 of the proximal housing 22. For example, the C-shaped eye flap 50 may be adhered to the proximal edge 224 using double-sided tape or attached to the proximal edge 224 using a hook and loop construction. The C-shaped eye flap 50 is configured to follow the shape of the proximal edge 224 to conform to the contours of the user's face or forehead to the area near the nose, and the C-shaped notch leaves sufficient accommodation for the bridge of the nose. Because the window assembly 20 of the present application can contact the user's face via the eye mask 50, it can be ensured that the user feels more comfortable. Meanwhile, since the C-shaped eye mask 50 has a sweat absorbing function, discomfort caused by sweat of a user is avoided when the flexible welding mask 100 is worn normally.

According to embodiments of the present application, the spacer 223 between the proximal edge 224 and the contact edge 222 of the proximal housing 22 is not continuously formed. The partition 223 has one or more ventilation holes formed therein for ventilation. Because of the presence of the spacer 223, a gap may be left between the flexible protective cover 10 and the face of the person when the flexible welding mask 100 is worn by the user. Such non-continuously formed (or vented) barrier 223 allows air to more smoothly flow between flexible boot 10 and the face to alleviate discomfort to the user.

According to one embodiment of the present application, flexible boot 10 may be configured to cover the face and crown of a user, as shown in fig. 2. According to an alternative embodiment of the present application, flexible boot 10 may also be configured to cover only the face of the user. Fig. 9A schematically illustrates the manner in which straps 40 attach flexible boot 10 according to one embodiment of the present application. In this embodiment, two straps 40 are attached at one end to each of the left and right sides of flexible boot 10, and in particular near the left and right free edges of flexible boot 10, and are detachably connected to each other at the user's hindbrain scoop via buckles. Each strap 40 is configured in a length adjustable manner. Fig. 9B schematically illustrates the manner in which straps 40 attach flexible boot 10 according to another embodiment of the present application. In this embodiment, one strap 40 is connected at both ends to the left and right sides of flexible boot 10, and the other strap 40 is connected at one end to the overhead portion of flexible boot 10, and at the other end to the former strap 40 in a T-shaped manner via a buckle. The continuous manner of the straps 40 of the embodiment shown in fig. 9B may provide for a reduced head burden on the user of the flexible welding mask 100 when worn by the user.

Under normal circumstances, when the flexible welding mask 100 is secured to the user's head via the straps 40, the window assembly 20 may naturally adhere to the user's face via the proximal edge 224 or the eye flap 50 under the force of gravity.

However, in some welding applications, it is often necessary to ensure that the window assembly 20 is reliably in contact with the user's face, regardless of the pose in which the user wearing the flexible welding mask 100 is positioned, to provide eye protection to the user. In this case, it is necessary to provide the window assembly 20 with a separate binding structure. Fig. 8 schematically illustrates one embodiment of such a binding structure. According to this embodiment, the binding structure comprises a fastening strap 60. For example, such fastening strip 60 may be made of a flexible material such as plastic. The fastening band 60 is formed in a substantially ring-shaped manner so as to be attachable to a hindbrain spoon of a human body. Two suspension bands 61 are detachably attached to opposite left and right portions of the fastening band 60, respectively. For example, each of the suspension bands 61 is configured in such a manner that the length thereof can be adjusted, and the end of each of the suspension bands 61 to which the fastening band 60 is connected is provided with a buckle to be detachably connected to the fastening band 60. Such a buckle may be any suitable buckle familiar to those skilled in the art.

Two sling attachment structures 222a are integrally formed laterally outwardly on the contact edge 222 of the proximal housing 22 (only one of the sling attachment structures 222a is visible in fig. 8). According to the illustrated embodiment, a connection post 222b is hollowed out in each of the sling connection structures 222 a. At the free end of each sling 61 opposite the buckle, a connecting hook 62 is provided. For example, the attachment hooks 62 may be removably hooked to the attachment posts 222b of the sling attachment structure 222 a. For this purpose, the connection hook 62 may be configured such that, for example, the connection hook 62 is free to rotate with respect to the connection post 222b when it is connected to the connection post 222b. As shown in FIG. 2, a user may secure window assembly 20 to the user's face using fastening straps 60 and suspension straps 61, and then secure flexible boot 10 to the user's head using straps 40, such that window assembly 20 may be reliably secured and protected with respect to the human eye regardless of the posture of the user.

According to the present application, when the user wears flexible welding mask 100, attachment hooks 62 and sling attachment structure 222a are covered by flexible boot 10, thereby preventing spatter damage at the welding site. In addition, because contact edge 222 and proximal edge 224 are spaced apart from each other, connecting hook 62 does not directly contact the face causing discomfort. The degree of tightness of window assembly 20 may be achieved by adjusting the length of sling 61 accordingly.

FIG. 10 schematically illustrates a binding structure for securing a window assembly according to another embodiment of the present application. According to this embodiment, two sling attachment structures 222a (only one of which is visible in fig. 10) formed on the contact edge 222 of the proximal housing 22 at the proximal housing 22 are each formed with a plurality of reinforcing ribs 222c to enhance the strength and ensure reliable securement of the window assembly 20. Also, the sling attachment structure 222a is provided with an attachment post (hidden in fig. 10). In addition, the strap structure according to fig. 10 further includes a fastening strap 60 as shown in fig. 8 and a sling 61. However, unlike the embodiment shown in fig. 8, the sling attachment structure of the embodiment shown in fig. 10 includes an attachment hook 62 'and an additional buckle 64 pivotally connected to the attachment hook 62'. The coupling hook 62' can be arranged in a substantially similar manner to the coupling hook 62, with the addition that the pivot axis of the additional buckle 64 with respect to the coupling hook 62' is designed to be substantially perpendicular to the rotational axis of the coupling hook 62' with respect to the coupling post. In this way, the sling 61, which is connected to the contact edge 222 of the proximal housing 22 via the connecting hooks 62 'and the additional buckle 64, is allowed to adjust in position in two dimensions to ensure a better adaptation to the user's face shape, thereby providing a more comfortable wearing effect.

According to another embodiment of the present application, fastening strip 60 may be configured to be attached to flexible boot 10 by a hook and loop structure, such as at the top of the user's head and/or near the user's hindbrain.

Fig. 11A to 11C schematically illustrate a sling attachment structure of a fixed window assembly according to another embodiment of the present application. According to this embodiment, left and right sling attachment structures 222a' (only one of which is visible in fig. 11A) are provided on the contact edge 222 of the proximal housing 22. In the embodiment of fig. 11A, each sling attachment structure 222a' includes a first sling attachment member 222a1 and a second sling attachment member 222a2. The first sling attachment member 222a1 is integrally formed at a respective end of the proximal edge 224 of the proximal housing 22. As further shown in fig. 11B, two circular holes 2223, 2224 of a size that communicate with each other and partially overlap are formed in the first sling connection member 222a 1. A vertical pivot pin 2221 is formed in the second sling attachment member 222a2. The outer diameter of the vertical pivot pin 2221 is approximately equal to the diameter of the small circular hole 2224. Further, a rounded head 2222 is formed at the free end of the vertical pivot pin 2221. The diameter of the circular head 2222 is approximately equal to the diameter of the large circular bore 2223 and smaller than the diameter of the small circular bore 2224. In this way, at the time of installation, the head portion 2224 of the second sling connection member 222a2 may be first passed through the large circular hole 2223 of the first sling connection member 222a1, and then the vertical pivot pin 2221 may be pulled into the small circular hole 2224 such that the second sling connection member 222a2 is pivotally retained with respect to the first sling connection member 222a1, the pivot axis being defined by the pivot pin 2221 rotatable at the small circular hole 2224. Further, a connection post 222b is also formed at the second sling connection member 222a2. The connecting post 222b is configured to receive the connecting hook 62 as shown in fig. 8. Thus, in this embodiment, the sling attachment structure also allows for two-dimensional adjustment of the position of the sling 61 via the attachment hooks 62 to ensure a better adaptation to the user's face shape, thereby providing a more comfortable wearing effect. Further, it should be apparent to those skilled in the art that other structures that ensure that the first sling attachment member 222a1 and the second sling attachment member 222a2 are detachably pivotally coupled to each other may be employed in the present application. For example, the first sling attachment member 222a1 and the second sling attachment member 222a2 may be connected via pivot pins that removably pass through each other. In summary, the pivot axis between the first sling attachment member 222a1 and the second sling attachment member 222a2 is not coplanar with the pivot axis of the attachment hanger 62, or even substantially perpendicular to each other.

Although specific embodiments of the present application have been described in detail herein, they are presented for purposes of illustration only and are not to be construed as limiting the scope of the present application. Furthermore, it should be clear to a person skilled in the art that the embodiments described in the present specification can be used in combination with each other. Various substitutions, alterations, and modifications can be made without departing from the spirit and scope of the application.

Claims (18)

1. A flexible welding mask (100), comprising:

a window assembly (20);

a flexible boot (10) removably coupled to the window assembly (20); and

a length adjustable strap (40) connected to the flexible boot (10), the window assembly (20) comprising:

a distal housing (21), a proximal housing (22), and a flip (23) pivotably connected to the distal housing (21), the distal housing (21) being provided with a contact edge, the proximal housing (22) being provided with a contact edge and a proximal edge (224) spaced from the contact edge, a portion of the flexible boot (10) being interposed between the contact edge of the distal housing (21) and the contact edge of the proximal housing (22), the proximal edge (224) of the proximal housing (22) having a curved profile, and the curved profile being formed with a notch facing downward when the flexible welding mask (100) is worn, an eye protection assembly being removably mountable in the flip (23).

2. The flexible welding mask (100) according to claim 1, wherein the proximal edge (224) of the proximal shell (22) is curved C-shaped in such a way that the left and right ends of the proximal edge (224) are farther from the flip cover (23) than the middle portion, and the notch of the C-shape is directed downward when the flexible welding mask (100) is worn.

3. The flexible welding mask (100) of claim 2, wherein a dividing wall (223) is formed between the contact edge of the proximal shell (22) and the proximal edge (224) of the proximal shell (22), at least one aperture being formed in the dividing wall (223).

4. A flexible welding mask (100) according to claim 3, characterized in that an eye patch (50) made of a soft material is detachably mounted on a proximal edge (224) of the proximal housing (22), the eye patch (50) being shaped to follow the proximal edge (224).

5. The flexible welding mask (100) of claim 4, further comprising a binding structure provided for the window assembly (20) such that the window assembly (20) can be secured independently of the flexible boot (10) via the binding structure when the flexible welding mask (100) is worn.

6. The flexible welding mask (100) of claim 5, wherein the binding structure comprises a fastening strap (60), the fastening strap (60) being connected to the left and right ends of the proximal edge (224) of the proximal shell (22) via two length-adjustable suspension straps (61), respectively.

7. The flexible welding mask (100) of claim 6, wherein a sling attachment structure (222 a) is formed at each of the left and right ends of the proximal edge (224) of the proximal shell (22), each sling attachment structure (222 a) being formed with an attachment post (222 b), a respective one of the sling straps (61) being rotatably and detachably connected to the respective attachment post (222 b) via an attachment hook (62).

8. The flexible welding mask (100) according to claim 7, wherein each connecting hook is pivotally connected with an additional buckle (64), the respective sling (61) being connected with the additional buckle (64), and the axis of rotation of the connecting hook and the pivot axis of the additional buckle (64) being perpendicular to each other.

9. The flexible welding mask (100) of claim 7, wherein each strap connection structure (222 a) includes a first strap connection member (222 a 1) and a second strap connection member (222 a 2) that are detachably pivotally connected to each other, the first strap connection member (222 a 1) is integrally formed on the proximal edge (224), the connection post (222 b) is formed in the second strap connection member (222 a 2), and a pivot axis between the first strap connection member (222 a 1) and the second strap connection member (222 a 2) is perpendicular to a rotational axis of the connection hook (62) to each other.

10. The flexible welding mask (100) of claim 9, wherein the contact edge of the proximal housing (22) and the contact edge of the distal housing are both curved in such a way that the left and right ends of the contact edge are farther from the flip cover (23) than the middle portion.

11. The flexible welding mask (100) according to claim 10, wherein the flexible boot (10) has a portion that is positioned below the window assembly (20) and is formed to protrude distally or to be flat when the flexible welding mask (100) is worn.

12. The flexible welding mask (100) of claim 11, wherein the flip cover (23) is pivotable between a closed position and a flipped-up position, wherein in the closed position the eye-shield assembly obstructs an interior hollow space of the window assembly defined by the distal housing (21) and the proximal housing (22); in the flipped up position, the interior hollow space is unobstructed by the eye-shield assembly.

13. The flexible welding mask (100) of claim 12, wherein the flip cap (23) is formed with side walls (231) to define a space for mounting the eye-shield assembly.

14. The flexible welding mask (100) of claim 13, wherein at least one pair of grooves is formed in a side wall (231) of the flip cover (23), two of the pair of grooves being opposite each other to receive a protrusion (281) of a snap spring (28) mounted in a space of the flip cover (23), the snap spring (28) being configured to contact the eye protection assembly to secure it within the space of the flip cover (23), the at least one pair of grooves comprising a pair of first grooves (23 a) and a pair of second grooves (23 b), the pair of first grooves (23 a) being further away from the proximal housing (22) than the pair of second grooves (23 b) when the flip cover (23) is in a closed position.

15. The flexible welding mask (100) of claim 14, wherein the eye-shielding assembly comprises at least one of an automatic darkening filter (24), a welding protective lens having a fixed light transmission, and a laser protective sheet.

16. The flexible welding mask (100) according to claim 15, wherein the straps (40) comprise two straps (40) each having one end connected near the left and right free edges of the flexible boot (10) and the other end detachably connected to each other via a buckle.

17. The flexible welding mask (100) according to claim 16, wherein the straps (40) comprise two adjustable length straps (40), a first of the two straps being connected near the left and right free edges of the flexible boot (10), and a second of the two straps being connected at one end to the top of the flexible boot (10) when the flexible welding mask (100) is worn, and at the other end to the first strap in a T-shaped manner via a buckle.

18. The flexible welding mask (100) of claim 4, wherein the soft material is a soft sweat-absorbent material.