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WO2016037544A1 - Masque de soudage à assombrissement automatique ayant un panneau à cristaux liquides incurvé - Google Patents

Masque de soudage à assombrissement automatique ayant un panneau à cristaux liquides incurvé Download PDF

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Publication number
WO2016037544A1
WO2016037544A1 PCT/CN2015/088953 CN2015088953W WO2016037544A1 WO 2016037544 A1 WO2016037544 A1 WO 2016037544A1 CN 2015088953 W CN2015088953 W CN 2015088953W WO 2016037544 A1 WO2016037544 A1 WO 2016037544A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
mask
automatic dimming
welding mask
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/088953
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English (en)
Chinese (zh)
Inventor
吴子乾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecmen Electronics Co Ltd
Original Assignee
Tecmen Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tecmen Electronics Co Ltd filed Critical Tecmen Electronics Co Ltd
Publication of WO2016037544A1 publication Critical patent/WO2016037544A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders

Definitions

  • the present application generally relates to an automatic dimming welding mask having an arc changing liquid crystal panel.
  • the operator In the welding operation, in order to protect the operator from various harmful rays caused by spatter and arcing, the operator usually wears a welding mask.
  • the automatic dimming filter is mainly a liquid crystal panel. Before the arcing is started, the liquid crystal panel is transparent, and the liquid crystal panel is turned into an opaque state at the moment of arcing, thereby providing protection for the operator's eyes.
  • the automatic dimming filter is equipped with an adjustment knob or a button. Before using the welding mask, the operator can adjust the operating parameters such as sensitivity, delay time, shading number, and welding method of the automatic dimming filter. Then wear the top cover for the welding operation.
  • the configured automatic dimming filter is generally in the shape of a flat plate, and when the operator wears the mask, the flat automatic dimming filter is located in front of the human eye. Due to the structure of the mask housing itself, the horizontal auto-dimming filter cannot be made too large in the horizontal direction, resulting in a smaller horizontal field of view of the operator through the auto-dimming filter. In this case, in order to perform the welding work on a large workpiece area, the operator needs to shake the head left and right after the arcing to observe the welding area of the workpiece, which increases the difficulty of the operator's welding operation. In addition, when the operator looks out through the flat automatic dimming filter, the residual light of the human eye may be deformed when the object is observed through the edge of the automatic dimming filter, causing the operator to perform the welding operation. There may be a false positive.
  • the present application is directed to an improved automatic dimming welding mask that is more conventional than conventional
  • the dynamic light welding mask has an observation field of view which is enlarged in the horizontal direction, and at the same time minimizes the possibility of deformation when the object is observed, which is convenient for the operator wearing the mask to observe more conveniently and accurately without shaking the head.
  • the welding zone of the workpiece and the welding work is completed.
  • an automatic dimming welding mask comprising:
  • a headgear structure operatively coupled to the mask housing
  • An automatic dimming filter installed in the mask housing, the auto-dimming filter enclosing a curved liquid crystal panel and an arc-shaped transparent protective sheet for protecting the curved liquid crystal panel, the curved liquid crystal panel And the curved transparent protective sheet protrudes outward on the mask housing.
  • the curved liquid crystal panel has a cylindrical arc shape, and after the operator wears the automatic dimming welding mask, the bus bar of the cylinder is substantially parallel or slightly smaller than the height direction of the operator's head. angle.
  • the angle of the curved liquid crystal panel swept relative to the centroid of the welding mask is 60 degrees when viewed in a cross section perpendicular to the bus bar of the cylinder and taken through the cylinder. Between 180 degrees, preferably 120 degrees.
  • the curved liquid crystal panel comprises two curved liquid crystal panel segments spaced apart from each other symmetrically, wherein each segment is opposite to one eye of an operator wearing a welding mask.
  • a retaining assembly is further included, the curved liquid crystal panel being detachably mounted on the mask housing via the retaining assembly.
  • an arcuate transparent protective sheet that provides protection for the curved liquid crystal panel is held on the holding assembly.
  • the arc center of the curved liquid crystal panel is located behind or in front of the centroid or substantially coincides.
  • the protective sheet is the same as or different from the bending degree and/or the bending direction of the liquid crystal panel.
  • the auto-dimming filter comprises a solar cell unit arranged in an arc.
  • the horizontal direction of the curved liquid crystal panel is sized to provide the ability to observe a range of 180 degrees of view from the left and right without the head being fixed after the operator wears the welding mask.
  • Fig. 1a schematically shows an observation field of view of an operator wearing a conventional automatic dimming welding mask, wherein only the automatic dimming filter provided in the welding mask is illustrated for simplicity;
  • Figure 1 b schematically shows the operator viewing the field of view of the automatic dimming welding mask according to the present application, wherein for the sake of simplicity only the arcuate automatic dimming according to the idea of the present application provided in the welding mask is illustrated. filter;
  • FIG. 2 is a schematic exploded view of an automatic dimming welding mask in accordance with one embodiment of the present application
  • Figure 3 is a schematic cross-sectional perspective view of an automatic dimming welding mask in accordance with an embodiment of the present application
  • Figure 4 is a schematic cross-sectional plan view of the automatic dimming welding mask according to Figure 2;
  • Figure 5 is a schematic view showing an automatic dimming filter of different arcs on the premise that the horizontal width of the arc is constant;
  • Figure 6 is a schematic cross-sectional view showing a mask housing employing another embodiment of a curved auto-dimming filter according to the present application;
  • Fig. 7 schematically shows a horizontal cutaway view of a mask housing employing another embodiment of a curved auto-dimming filter according to the present application.
  • the auto-dimmer welding mask generally includes a mask housing, a headgear structure coupled to the mask housing, and an auto-dimmer filter mounted on the mask housing.
  • Other control circuits and/or components and headgear structure design associated with the auto-dimming filter to be noted are the same as in the prior art, and thus they are not within the scope of this specification.
  • the horizontal field of view of the auto-dimming filter is mainly determined by two factors: 1. the horizontal width of the auto-dimming filter; and the maximum angle of the human eye to swing left and right. For the second factor, most people's left and right swing angles are not much different, and basically do not exceed 180 degrees. Therefore, how to design an automatic dimming filter with a larger horizontal width for the first point factor would be a means to effectively expand the viewing field of the welding mask wearer.
  • FIG. 1a and 1b respectively illustrate the difference in the effect of the conventional flat automatic dimming filter in the welding mask and the automatic dimming filter equipped according to the idea of the present application on the visual field of the human eye.
  • the automatic dimming filter is retained.
  • the visual field of the operator's eyes is limited in the horizontal direction by the horizontal width of the auto-dimmer filter 10 when wearing a welding mask equipped with a conventional flat auto-dimmer filter 10.
  • the horizontal width of the auto-dimming filter 10 is limited by the structure of the welding mask housing itself - it can only cover a portion of the front of the human eye 1 of the operator wearing the mask housing, and cannot be made wider.
  • the angle of view of the operator looking outward through the mask, particularly through the flat auto-lighting filter 10 of the mask is alpha.
  • the field of view angle refers to the maximum horizontal direction that can be observed by the automatic dimming filter head passing through the operator after wearing the welding mask, only by swinging the eyes left and right. Angle or range of angles.
  • the main design idea of the present application is to design the auto-dimming filter to have a circular arc shape, as in the arc-shaped auto-dimming filter 20 shown in Fig. 1b.
  • the main component of the auto-dimming filter is a liquid crystal panel. That is, the curved auto-dimming filter 20 according to the present application mainly includes a curved and flexible liquid crystal panel. Such a curved auto-dimming filter 20 can cover a larger range of the left and right sides of the human eye 1 in the horizontal direction, such that the operator passes through the mask, in particular through the curved automatic variable-light filter of the mask. 20 The angle of view of the outward view is larger, which is ⁇ .
  • the mask housing of the welding mask has a certain curvature in a portion in front of the wearer's face, whereby the curved automatic dimming filter can be designed to conform to the curved structure of the front portion of the mask housing.
  • the curved automatic dimming filter can be designed to conform to the curved structure of the front portion of the mask housing.
  • ⁇ can be designed to be much larger than ⁇ .
  • the arc-shaped automatic dimming filter has the advantages of not only increasing the horizontal viewing angle of the wearer of the welding mask, but also reducing the possibility of misjudgment by the operator to the workpiece welding zone and improving the welding work efficiency.
  • the welding mask primarily includes a mask housing 70 and a headgear structure 60 operatively coupled to the mask housing 70 for wearing on the operator's head.
  • the mask housing 70 can for example be made of synthetic fibres, in particular of nylon.
  • the shape of the mask housing 70 corresponds to the contour of the human head.
  • a viewing window 71 is provided at the front of the mask housing 70.
  • An observation window is mounted at the observation window 71, and the observation window is generally composed of a protective sheet 30, an auto-dimmer filter 20, and a holding assembly.
  • the protective sheet 30 may be made of a high-strength transparent material such as glass or plastic, and is in direct contact with various spatters during welding to prevent the auto-lighting filter 20 from being damaged.
  • the retaining assembly is used to simultaneously releasably secure the protective sheet 30 and the auto-dimmer filter 20 to the mask housing 70, primarily including the retaining frame 40 and the locking member 50.
  • the holding frame 40 can be made, for example, of plastic, on which a plurality of protrusions are provided for fixing the auto-dimming filter 20 and the protective sheet 30. After the auto-dimming filter 20 and the protective sheet 30 are fixed in place on the holding frame 40, the holding frame 40 can be detachably fixed to the inner side of the mask housing 70 via the locking member 50.
  • the solar cell unit 21 and the liquid crystal surface are disposed on the body of the auto-dimmer filter 20 Board 22.
  • the liquid crystal panel 22 can be quickly changed from a transparent state to an opaque state according to the setting to provide protection to the operator's eyes.
  • the liquid crystal panel 22 of the auto-dimming filter 20 has a circular arc shape.
  • the automatic dimming filter can be the same as the existing design.
  • the solar battery cells 21 may also be arranged in an arc shape in conformity with the liquid crystal panel 22.
  • FIG 3 and 4 show the state after the curved auto-dimming filter 20 is mounted on the mask housing 70. It can be seen that the curved liquid crystal panel 22 of the automatic light-reducing filter 20 protrudes outward at the position of the observation window 71, facilitating the observation of the operator's eyes in a wider field of view while swinging left and right.
  • the curved auto-dimming filter 20, in particular the curved liquid-crystal panel 22 of the curved auto-dimming filter 20, refers to a cylindrical curved design in which the cylinder of the cylinder After the operator wears the mask, it is generally parallel or slightly at a small angle to the height direction of the head, so as not to affect the human eye to view the object up and down. That is, from a human anatomical point of view, when the operator wears the mask, the busbar of the cylinder is substantially parallel or slightly at a slight angle to the sagittal or coronal plane of the operator's head.
  • the protective sheet 30 can also be disposed in the same arc shape as the curved auto-dimming filter 20.
  • the degree of bending and/or the direction of bending of the protective sheet 30 may be disposed substantially the same as that of the liquid crystal panel 22.
  • the degree of bending and/or the direction of bending of the protective sheet 30 may also be different from that of the liquid crystal panel 22.
  • the arc of the arcuate auto-dimming filter 20, particularly the arc-shaped auto-dimming filter 20, is observed in a horizontal cross-section of the mask housing 70 (e.g., a horizontal cross-section substantially through the position of the human eye).
  • the arc center (arc) of the liquid crystal panel 22 is O'
  • the shape center of the welding mask is O. From the front-rear direction of the operator wearing the welding mask, the center of the arc is O' after the center of the shape of the welding mask is O, which ensures that the shape of the arc does not excessively protrude outward from the mask housing 70.
  • the bending radius of the arc can be changed accordingly as needed.
  • the front portion of the mask housing 70 is typically fabricated to be curved. That is to say, if the arc-shaped automatic dimming filter design of the present application is adopted in the mask housing 70, the automatic dimming filter 20 can be appropriately disposed under the premise that the structural strength of the mask housing is satisfactory.
  • the horizontal width of the curved horizontal is increased to maximize the wearer's eyes.
  • the coverage area of the side ensures that the wearer can see a wider field of view by swinging the eyes left and right while the head is still moving.
  • the wearer can be kept in the head without moving. The observation effect on the sides of the human eye.
  • Fig. 5 is a schematic view showing an automatic dimming filter of different arcs under the premise that the horizontal width of the arc is constant.
  • Reference numerals 20' and 20" respectively denote curved liquid crystal panels of different curvatures, and their circular arc centers are respectively illustrated by O' and O", and the centroid of the mask is illustrated by O.
  • the curvature of the liquid crystal panel 20" is greater than the curvature of the liquid crystal panel 20', so that the arc center O" of the liquid crystal panel 20" is located before the centroid O, and the arc center O' of the liquid crystal panel 20' is located after the centroid O.
  • the position of the arc center O' of the liquid crystal panel 20' with respect to the centroid O can be arbitrarily set as needed, for example, O' can also be located just before or coincident with the centroid O.
  • the right eye 1 of the wearer looks outward through the right edge of the liquid crystal panel 20' or 20" and the left eye 1 of the wearer passes through the liquid crystal to the left without moving the head. Looking outward at the left edge of the panel 20' or 20" determines the maximum field of view of the wearer in the horizontal direction. If the light is incident on the liquid crystal panel 20' or 20" at an angle with respect to the tangential plane, aberration occurs, and if the angle is smaller, the phase difference is more obvious. As seen from Fig. 5, in the liquid crystal panel 20' or 20" This angle of incidence at the edge with respect to the tangent plane is represented by ⁇ .
  • the incident angle ⁇ 2 of the liquid crystal panel 20 ′ having a large curvature is significantly larger than the incident angle ⁇ 1 of the liquid crystal panel 20 ′ having a smaller curvature.
  • the wearer's eyes are less distorted by the objects observed at the edges of the liquid crystal panel. On the contrary, the distortion is greater. It is conceivable that this phenomenon of aberration distortion is particularly noticeable in a flat liquid crystal panel.
  • the curvature of the liquid crystal panel cannot be infinitely increased due to the limitation of strength, design, and manufacturing cost, so the circumferential width of the horizontal arc of the liquid crystal panel and the curvature of itself are Determining a suitable compromise between settings will facilitate the manufacture of a suitable curved auto-dimming filter that improves the wearer's field of view at a lower cost.
  • the mask housing of the welding mask of the present application is not limited to the specific shape as shown in FIGS. 2 to 4. Any mask housing in which an arc-shaped automatic dimming filter can be employed can be employed in the welding mask according to the present application.
  • Figure 6 schematically illustrates a mask housing 80 of a welding mask in accordance with another embodiment of the present application.
  • the front portion of the mask housing 80 is also generally arcuate in shape.
  • Figure 6 is a cross-sectional view of a mask housing 80 equipped with an auto-dimming filter, generally taken at a level corresponding to the wearer's eyes.
  • the arcuate auto-dimming filter 201 includes an integrated curved liquid crystal panel 221, a solar cell unit (not shown), and an arcuate protective sheet 301 spaced apart from the curved liquid crystal panel 221.
  • the curved auto-dimming filter 201 is detachably fixed in the observation window of the mask housing 80 via the holding assembly 41 in a manner similar to that shown in FIGS. 2 to 4.
  • the arcuate circumferential width of the curved auto-dimming filter 201 or its curved liquid crystal panel 221 needs to be selected in consideration of improving the wearer's horizontal field of view and the structural strength and processing feasibility of the mask housing. Therefore, according to the applicant's concept, if the centroid of the mask or its casing 80 is O, the angle ⁇ of the curved auto-lighting filter 201 or its curved liquid crystal panel 221 is centered on the centroid O For example, it may be between 60 degrees and 180 degrees, preferably 120 degrees.
  • angle ⁇ is independent of the arc of the curved auto-lighting filter 201 or its curved liquid crystal panel 221 itself, and only represents the curved auto-dimming filter 201 or its curved liquid crystal panel 221 in horizontal cross section. The angle that the middle direction is swept relative to the mask housing 80 in the circumferential direction.
  • FIG. 7 illustrates a curved auto-dimming filter 202 that can be combined with FIG. 6 in accordance with another exemplary embodiment.
  • the illustrated mask housings 80 are assembled together.
  • the curved auto-dimming filter 202 includes two discrete curved liquid crystal panels 222 and two separate protective sheets 302 that are secured via a retention assembly 42, each of which mates with a respective one of the protective sheets.
  • the retaining assembly 42 differs from the retaining assembly 41 in that an additional support portion is provided at an intermediate location for providing support for the two discrete curved liquid crystal panels 222 and the two discrete protective sheets 302.
  • the two separate curved liquid crystal panels 222 correspond to each of the eyes of the operator, respectively. Since the additional support portion is located substantially between the eyes of the wearer, the wearer's line of sight is not affected, and the single curved liquid crystal panel does not need to be manufactured to have a large area, which reduces the manufacturing cost and the LCD panel of a smaller area. The structural strength is also increased accordingly.
  • the welding mask adopts an arc-shaped automatic dimming filter to provide the wearer with a larger viewing field in the horizontal direction, while minimizing the possibility of deformation when the object is observed. It is convenient for the wearer to observe the welding zone of the workpiece and complete the welding work more conveniently and without shaking the head.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un masque de soudage à assombrissement automatique, comprenant un corps de masque (70), une structure de sangle de tête (60) reliée de manière fonctionnelle au corps de masque (70), et un filtre d'assombrissement automatique (ADF) (20) installé sur le corps de masque (70); et l'ADF (20) comprend un panneau à cristaux liquides incurvé (22) faisant saillie vers l'extérieur sur le corps de masque (70).
PCT/CN2015/088953 2014-09-09 2015-09-06 Masque de soudage à assombrissement automatique ayant un panneau à cristaux liquides incurvé Ceased WO2016037544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410456696.9 2014-09-09
CN201410456696.9A CN105455947A (zh) 2014-09-09 2014-09-09 具有弧形液晶面板的自动变光焊接面罩

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Publication Number Publication Date
WO2016037544A1 true WO2016037544A1 (fr) 2016-03-17

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WO (1) WO2016037544A1 (fr)

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WO2017196721A1 (fr) * 2016-05-12 2017-11-16 3M Innovative Properties Company Casque de protection comprenant un obturateur commutable incurvé et comprenant de multiples couches antiréfléchissantes
AU2019283838B2 (en) * 2016-05-04 2021-07-01 3M Innovative Properties Company A curved eye protection shield for welding protection

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KR102416398B1 (ko) 2016-04-27 2022-07-04 쓰리엠 이노베이티브 프로퍼티즈 캄파니 확대 커버를 갖는 용접 보호기
CN109745173A (zh) * 2018-10-23 2019-05-14 泰克曼(南京)电子有限公司 自动变光焊接面罩
CN112353558A (zh) * 2020-11-04 2021-02-12 江苏美信光电科技有限公司 一种能够自动掀起与闭合的自动变光焊接面罩

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Publication number Priority date Publication date Assignee Title
AU2019283838B2 (en) * 2016-05-04 2021-07-01 3M Innovative Properties Company A curved eye protection shield for welding protection
US11129748B2 (en) 2016-05-04 2021-09-28 3M Innovative Properties Company Curved eye protection shield for welding protection
WO2017196721A1 (fr) * 2016-05-12 2017-11-16 3M Innovative Properties Company Casque de protection comprenant un obturateur commutable incurvé et comprenant de multiples couches antiréfléchissantes
KR20180136565A (ko) * 2016-05-12 2018-12-24 쓰리엠 이노베이티브 프로퍼티즈 캄파니 만곡형 절환가능 셔터를 포함하고 다수의 반사방지 층을 포함하는 보호용 헤드기어
AU2017263312B2 (en) * 2016-05-12 2019-01-03 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
KR102013096B1 (ko) 2016-05-12 2019-08-21 쓰리엠 이노베이티브 프로퍼티즈 캄파니 만곡형 절환가능 셔터를 포함하고 다수의 반사방지 층을 포함하는 보호용 헤드기어
EP3454803A4 (fr) * 2016-05-12 2020-01-15 3M Innovative Properties Company Casque de protection comprenant un obturateur commutable incurvé et comprenant de multiples couches antiréfléchissantes
AU2019202287B2 (en) * 2016-05-12 2020-04-02 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
US10758420B2 (en) 2016-05-12 2020-09-01 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
US11413190B2 (en) 2016-05-12 2022-08-16 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers

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