CN86207454U

CN86207454U - Transmittance-adjustable protection mask

Info

Publication number: CN86207454U
Application number: CN 86207454
Authority: CN
Inventors: 王锡哉
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-10-14
Filing date: 1986-10-14
Publication date: 1987-09-16

Abstract

The utility model discloses a light transmissivity adjustable protecting face mask, belonging to labor protecting commodities, characterized in that lens formed by combining two polarizing disk which are mutually formed into the angel of 90 DEG, the adjusting room of the angel of 15 DEG is left between two polarizing disks. When an operator needs to clearly see the welding position, the rear lens is pulled downwards by hand to the maximum displacing position, and the light transmissivity can be clearly and completely seen by a welder. When welding is needed, the operator lose a hand, and the rear lens are returned to the intersecting angle position well adjusted under the function of elastic elements. The light transmissivity can completely satisfies the requirements of welding.

Description

Transmittance-adjustable protection mask

This utility model system belongs to protective articles, and a kind of protective mast of being convenient to use in the dark that has light-permeable degree weldering mirror promptly is provided.

Being used to of using when at present the welder welds protects the weldering mirror of eyes all to exist such problem: 1) transmittance is non-adjustable, and different welding means need adopt the weldering mirror of different brackets transmittance; 2) use inconveniently, will see welding position when the welder welds clearly and just must take repeatedly and put on face shield.

For addressing the above problem, this utility model provides a kind of protective mast with adjustable transparent degree weldering mirror.

This utility model is combined before and after two polarized lenses according to the polarized light principle, makes both 90 ° each other of polarization directions, and can be adjusted (transmittance optionally and decide) in 15 ° of scopes, thereby can obtain required transmittance.

Protective mast provided by the utility model mainly be by synergetic two polarized light pieces in front and back and one by stop screw, handle, flexible member, connect rackwork that the drift bolt of two eyeglasses forms and add existing welding mask and form.Described rackwork can be used for adjusting two polarized light pieces angle each other.When the operator need see welding position clearly, pull handle downwards with hands and will the back eyeglass remove to maximum displacement (i.e. 90 ° of-15 ° of positions) and locate, at this moment transmittance I-I.Cos ²75 ° of ≈ 1/10 I ₀, its penetrating light intensity can make the welder see welding position clearly fully; When needing welding, after the operator looses one's grip, lean on the effect of flexible member to make the back polaroid return to the good angle of cut position of adjusted, this angle of cut position institute penetrating light intensity just in time can satisfy transmittance required when welding.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Present embodiment is made up of stop screw (1), back polaroid (2), preceding polaroid (3), spring leaf (4), fixture (5), drift bolt (6), handle (7).At first the front and back polaroid is superimposed by hinge (6), the initial polarization direction of two eyeglasses is mutually 90 °+α °, the α angle can be adjusted angle arbitrarily in 15 ° of scopes, reuse fixture (5) is fixed on its preceding polaroid (3) on the protective mast (8), when the operator need see welding position clearly, stir handle (7) downwards with hands the back eyeglass is pulled to maximum displacement; During welding; effect by spring after loosing one's grip makes the back polaroid return to the angle of cut position that mixes up; promptly by the positioning position that screw limited, this position just in time is applicable to transmittance required when welding, and the welding position in the time of can seeing welding like this clearly can protect eyes not stabbed by strong beam again.

Can find out that in sum protecting mask provided by the utility model has the advantages such as light transmittance is adjustable, easy to use, the water power weldering is all applicable.

Claims

1, the protective mast used of a kind of welder, it is characterized in that the eyeglass in the described protective mast is the two polaroids composition of the adjustable angle of combination before and after adopting, its polarization direction is mutually 90 °, and is equipped with the polarized light rackwork of being made up of the drift bolt of stop screw, handle, flexible member, connection two eyeglasses.

2,, it is characterized in that the adjustable angle scope between two polaroids is 15 ° of angles according to the described protective mast of claim 1.