Abstract: The present disclosure includes a headgear for a helmet. The headgear includes a front band, a back band, and an intermediate band comprising a plurality of intermediate band parts arranged between the front band and the back band. The plurality of intermediate band parts comprises first pair of band parts having a circular shape, the band parts of the first pair of band parts extending from and connecting on a first side of the headgear, a second pair of band parts having a circular shape, the band parts of the second pair of band parts extending from and connecting on a second side of the headgear, a first cross band part intersecting with and extending from the connection of the first pair of band parts, and a second cross band part intersecting with and extending from the connection of the second pair of band parts.

Abstract: The present application discloses an apparatus, comprising: a goggle, including a goggle frame and a protective lens installed in the goggle frame; a face mask releasably connected to the goggle; a detachable pivot-connection structure provided between two lateral sides of the goggle frame and the face mask, the detachable pivot-connection structure comprising a pivoting axis substantially parallel to a lateral direction of the goggle frame; and a detachable locking structure provided between the goggle frame and the face mask, the detachable pivot-connection structure configured to cooperate with the detachable pivot-connection structure to selectively lock the goggle frame and the face mask together.

Abstract: The present disclosure includes a headgear for a helmet. The headgear includes a front band, a back band, and an intermediate band comprising a plurality of intermediate band parts arranged between the front band and the back band. The plurality of intermediate band parts comprises first pair of band parts having a circular shape, the band parts of the first pair of band parts extending from and connecting on a first side of the headgear, a second pair of band parts having a circular shape, the band parts of the second pair of band parts extending from and connecting on a second side of the headgear, a first cross band part intersecting with and extending from the connection of the first pair of band parts, and a second cross band part intersecting with and extending from the connection of the second pair of band parts.

Abstract: An auto-darkening welding helmet comprises a helmet casing; an auto-darkening filter installed in the helmet casing; and a lighting device installed in the helmet casing, wherein the auto-darkening filter includes a liquid crystal panel which is switchable between a non-opaque state and an opaque state, wherein the lighting device comprises a cable connectable to the auto-darkening filter such that when the liquid crystal panel is in the non-opaque state the lighting device automatically emits light towards a front of the liquid crystal panel and when the liquid crystal panel is in the opaque state the lighting device does not automatically emit light.

Abstract: The present application provides a headband arrangement for a welding helmet, comprising: a fixed attachment structure; and a helmet mounting structure cooperating with the attachment structure, wherein at least two stopping positions are defined longitudinally between the attachment structure and the helmet mounting structure, the helmet mounting structure is selectively switchable between an unlocking state and a locking state, wherein in the unlocking state, the helmet mounting structure is slidable between the stopping positions relative to the attachment structure, and wherein in the locking state, the helmet mounting structure can be locked to one of the stopping positions relative to the attachment structure and can be kept there by a magnetic force generated between a pair of magnetic parts.

Abstract: The present application relates to a welding helmet comprising a helmet housing and a head cover adapted to be worn on a wearer's head and made of an air-impermeable and flexible material, wherein a zipper arrangement is provided between the helmet housing and the head cover to detachably connect the head cover to the helmet housing around the whole perimeter of an opening of the helmet housing, and wherein after the head cover is connected to the helmet housing, the zipper arrangement is located within the housing of the welding helmet. The present application also relates to an assembly having the welding helmet.

Abstract: The present application discloses a lockable fitting structure used for an electric air-purifying respirator of an auto-darkening welding helmet, the electric air-purifying respirator comprising a housing and a battery device, a battery holder being formed in the housing, and the battery device being able to be detachably installed in the battery holder by the lockable fitting structure, wherein the lockable fitting structure comprises at lease four pairs of sliding joint structures formed on the battery device and the battery holder respectively and a locking structure provided in the battery device, wherein the sliding joint structures of each pair can be engaged with or disengaged from each other by sliding them relative to each other, wherein the locking structure comprises a button and a tongue capable to be actuated by the button, wherein the tongue is movable along a direction substantially perpendicular to a sliding direction of the sliding joint structure, and wherein after the sliding joint structur

Abstract: An auto darkening filter, comprising: a first positive liquid crystal (LCD1) a second positive liquid crystal (LCD2); a first liquid crystal control circuit (A) configured to control the first positive liquid crystal (LCD1) and the second positive liquid crystal (LCD2) based on a received control signal; a negative-phase liquid crystal (LCD3) provided between the first positive liquid crystal (LCD1) and the second positive liquid crystal (LCD2); a second liquid crystal control circuit (B) configured to control the negative-phase liquid crystal (LCD3) based on a received control signal; a UV/IR filter configured to filter a welding arc; a light control circuit configured to detect the welding arc, generate a corresponding control signal based on the detected intensity of the welding arc, and output the corresponding control signal to a main control circuit.

Abstract: The present application relates to a headband arrangement comprising: an attachment structure; and a helmet mounting structure which can be selectively slid along the attachment structure, the helmet mounting structure having a lockable component, the lockable component being pivotable about a pivotal shaft between a locking position and an unlocking position, wherein a first magnetic part is secured in the lockable component, a second magnetic part is secured in the helmet mounting structure or the attachment structure, a repulsive force can be generated between the first and second magnetic parts to drive the lockable component to return from the unlocking position to the locking position and to hold the lockable component in the locking position.

Abstract: The present application discloses a wireless projector-type auto-darkening welding helmet comprising: a helmet housing; a headband structure for securing the helmet housing; an auto-darkening filter secured on the helmet housing; a wireless communication module; and a micro-projector which is data-connected to the auto-darkening filter and the wireless communication module, wherein when the auto-darkening filter is in a transparent state, the micro-projector is adaptable to project operating parameters of the auto-darkening filter and/or data received by the wireless communication module, as images, onto a plane in front of the welding helmet such that they can be watched by an operator who wears the welding helmet on his/her head. The present application also discloses a welding apparatus equipped with said wireless projector-type auto-darkening welding helmet.