FI127779B

FI127779B - Welding mask

Info

Publication number: FI127779B
Application number: FI20165550A
Authority: FI
Inventors: Jani Tanskanen
Original assignee: Kemppi Oy
Priority date: 2016-07-01
Filing date: 2016-07-01
Publication date: 2019-02-15
Also published as: DE212017000033U1; WO2018002435A1; CN209122630U; FI20165550A

Abstract

The disclosure relates to a welding mask (1) comprising a shield (11), wherein the shield (11) comprises an outer layer (111) and an inner layer (112) arranged at least partly parallel to each other and at a distance from each other for defining a space (113) between the outer layer (111) and the inner layer (112); at least one of the outer layer (111) and the inner layer (112) is made of flexible material; and the outer layer (111) or the inner layer (112) comprises a plurality of parts (114) of a snap fastener arranged to the space (113) for connecting with a plurality of corresponding parts (122) of a snap fastener comprised in an edge part (121) of a face seal (12) arranged to the space (113) parallel with the outer layer (111) and the inner layer (112).

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to welding equipment, and particularly to a welding mask.

BACKGROUND OF THE DISCLOSURE

When welding in an environment that is hazardous for the welder, a welding mask provided with an air supply is needed. The air is lead to the inside of the welding mask and it provides an over pressure to the inside of the welding mask. Usually such a welding mask comprises a face seal arranged between the shield and the user for preventing the air supplied to the welding mask from escaping and thus the over pressure from collapsing.

Sometimes the face seal needs to be separated from the shield for example for washing the face seal or replacing a damaged face seal. This requires easy detachment of the face seal from the shield. However, the connection of the face seal to the shield needs to be strong enough for preventing accidental separation of the face seal from the shield for example due to the face seal getting caught to something and thus exposal of the welder to the hazardous environment. This is regulated by the standard SFS-EN 12941. According to the standard, the connection between the face seal and the shield must withstand a pull force of 250 N in class TH 3, which is the strictest class in the standard.

Document US 7093302 B1 discloses a helmet assembly including dedicated features that are configured to matingly engage with a mating structure attached to a distinct accessory 20 unit. The corresponding mating configurations enable the operable securement of one or more of such distinct accessory units to the helmet body.

BRIEF DESCRIPTION OF THE DISCLOSURE

An object of the present disclosure is to provide a welding mask so as to solve fulfil the above requirements.

The objects of the disclosure are achieved by a welding mask which is characterized by what is stated in the independent claims. The preferred embodiments of the disclosure are disclosed in the dependent claims.

The disclosure is based on the idea of providing a welding mask comprising a shield, wherein the shield comprises an outer layer and an inner layer arranged at least partly parallel to each other and at a distance from each other for defining a space between the outer layer and the inner layer;

20165550 prh 22 -11- 2018 at least one of the outer layer and the inner layer is made of flexible material; and the outer layer or the inner layer comprises a plurality of parts of a snap fastener arranged to the space for connecting with a plurality of corresponding parts of a snap fastener comprised in an edge part of a face seal arranged to the space parallel with the outer layer 5 and the inner layer.

An advantage of welding mask of the disclosure is that because the snap fasteners are arranged between the outer layer and the inner layer, the layers direct a force directed to the face seal to a transverse direction in relation to the snap fastener, and thus a pull from the face seal would not result in separation of the corresponding parts of a snap fastener 10 in a face seal from the parts of a snap fastener in the shield. At the same time the face seal can be separated from the shield by detaching the snap fasteners manually.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following the disclosure will be described in greater detail by means of preferred embodiments with reference to the accompanying drawings, in which

Figure 1 is a welding mask according to an embodiment; and

Figure 2 illustrates a face seal usable with a welding mask according to an embodiment.

DETAILED DESCRIPTION OFTHE DISCLOSURE

The disclosure relates to a welding mask 1 comprising a shield 11. The welding mask could also be known as a welding helmet. The purpose of the shield is to protect the user 20 from splatter and heat generated during welding.

The shield 11 comprises an outer layer 111 and an inner layer 112 arranged at least partly parallel to each other and at a distance from each other for defining a space 113 between the outer layer 111 and the inner layer 112. In other words the inner layer 112 is arranged between the outer layer 111 and the user when the welding mask 1 is worn by the user.

The space 113 may also be regarded as a groove between the outer layer 111 and the inner layer 112. The purpose of the space 113 or the groove is to receive a face seal 12 partially to the space 113.

According to an embodiment the face seal is made of fabric.

The outer layer 111 or the inner layer 112 comprises a plurality of parts 114 of a snap 30 fastener arranged to the space 113 for connecting with a plurality of corresponding parts

122 of a snap fastener comprised in an edge part 121 of the face seal 12 arranged to the space 113 parallel with the outer layer 111 and the inner layer 112. In other words the face seal 12 is attached to the shield 11 with the snap fasteners. The parts 114 and the corresponding parts 122 of a snap fastener are arranged to from such an attachment between the shield 11 and the face seal 12 that requires a force transversal to the outer layer 111 or to the inner layer 112, depending on where the parts 114 of a snap fastener 5 are arranged, to attach and release. In other words the parts 114 and the corresponding parts 122 are arranged such that a force parallel to the outer layer 111 or to the inner layer 112, depending on where the parts 114 of a snap fastener are arranged, is not sufficient to attach or release the parts 114 to/from the corresponding parts 122 of a snap fastener.

According to an embodiment the plurality of parts 114 of a snap fastener are attached to 10 the inner layer 111.

According to an embodiment the distance between the outer layer 111 and the inner layer 112, i.e. the width of the groove, is between 3 to 10 mm. Preferably the distance between the outer layer 111 and the inner layer 112 is arranged to allow attaching of the parts 114 of a snap fastener to the corresponding parts 122. The precise distance between the outer 15 layer 111 and the inner layer 112 depends on the size of the parts 114 and the corresponding parts 122 of a snap fastener.

At least one of the outer layer 111 and the inner layer 112 is made of flexible material. Because of this the distance between the outer layer 111 and the inner layer 112 can be temporarily made bigger, thus allowing attaching of the face seal 12 to the shield 111. In 20 other words, at least one of the outer layer 111 or the inner layer 112 needs to be bent away from the other for increasing the distance between the outer layer 111 and the inner layer 112 when attaching the face seal 12 to the shield 11. According to an embodiment the outer layer 111 is made of flexible material and the inner layer 112 is made of flexible material. According to an embodiment the flexible material is plastic.

Claims

Welding mask (1) comprising a visor (11), characterized in that the visor (11) comprises an outer layer (111) and an inner layer (112) arranged at least partially parallel to one another and spaced apart to define a space (113). ) and the inner layer (112);

at least one of the outer layer (111) and the inner layer (112) is made of a resilient material; and the outer layer (111) or the inner layer (112) comprises a plurality of plurality of key fastener portions (114) arranged in the space (113) for combining with the plurality of corresponding plurality of key fastener portions (122) included in the peripheral portion (121) of the hood (113) parallel to the outer layer (111) and the inner layer (112).

Welding mask (1) according to claim 1, characterized in that the distance between the outer layer (111) and the inner layer (112) is 3-10 mm.

Welding mask (1) according to claim 1 or 2, characterized in that a plurality of key fastener parts (114) are attached to the inner layer (112).

Welding mask (1) according to one of the preceding claims, characterized in that the hood is made of fabric.

Welding mask (1) according to one of the preceding claims, characterized in that

20 flexible material is plastic.