Secondary mask independent adjusting structure of welding helmet

Abstract

The utility model provides a secondary mask independent adjusting structure of a welding helmet. The secondary mask independent adjusting structure mainly solves the problem that the visual angle is limited due to linkage adjustment of a double-layer mask. The structure comprises a welding mask, a splash-proof mask and a welding cap which are hinged through two groups of symmetrical overturning assemblies. When the welding mask of the independent adjusting structure is turned over, the first limiting boss is separated from the groove and then engaged with the groove to achieve step adjustment, and when the splash-proof mask is turned over, the second limiting boss is independently separated from the groove and then engaged with the two masks to be independently adjusted to different angles and automatically locked. The structure improves the view flexibility in the welding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a two -level mask independent adjusting structure of welding helmet. BACKGROUND

[0002] The conventional welding helmet usually adopts single-layer mask structure or linkage type double-layer mask, but the existing welding helmet has the following defects: (1) linkage of splash-proof mask and main mask leads to limited adjusting angle; (2) the mask needs to be turned over as a whole when frequently switching welding and observation state; (3) double mask synchronous adjusting cannot adapt to complex working condition demand.

[0003] The patent with the application number 202122873394.X discloses an air purification air inlet system of welding cap; comprising air filter equipment, connecting hose and welding cap air inlet pipe mechanism;The shell inside the air filter equipment is provided with a fan chamber and a filter chamber, and the external air enters the filter chamber of the shell through the filter mechanism;The fan mechanism is installed in the fan chamber of the shell, the battery mechanism includes a power box and a battery body, and the battery body supplies power for the motor;The front side of the air inlet pipe body of the welding cap air inlet pipe mechanism has an air outlet, the rear side of the air inlet pipe body has an air inlet, one end of the clamping plate is hinged with the side wall of the air inlet pipe body, and the screw rod of the clamping bolt is threaded with the side wall of the air inlet pipe body;The fan mechanism air outlet pipe of the air filter equipment is connected with the air inlet pipe body air inlet of the welding cap air inlet pipe mechanism through the connecting hose.

[0004] However, the welding cap in the above-mentioned patent technology is a single-layer mask and cannot be adjusted, which cannot solve the problem of the existing technology that the accidental drooping of the splash-proof mask affects the field of view, and also does not give any inspiration to solve the problem of the position of the splash-proof mask being damaged when adjusting the angle of the main mask. Utility model content

[0005] The utility model aims at providing a two-level mask independent adjusting structure of welding helmet to solve the problems in the above background technology:

[0006] (1) how to improve the technical problems of independent angle adjusting and accurate positioning of double-layer mask, and eliminate the linkage defects of the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A two-level mask independent adjusting structure of welding helmet, the welding helmet comprises a welding mask, a splash-proof mask and a welding cap, the splash-proof mask and the welding mask are hinged on the welding cap, and the welding mask is outside the splash-proof mask;

[0009] The welding mask is provided with first hinge parts on both sides, the first hinge parts are provided with first hinge holes in the center, the first hinge parts on the inner side walls of the welding mask are provided with a plurality of first limiting bosses, and the plurality of first limiting bosses are uniformly and circumferentially spaced along the axial direction of the first hinge holes;

[0010] The splash-proof mask is provided with second hinge parts on both sides, the second hinge parts are provided with second hinge holes in the center, the second hinge parts on the inner side walls of the splash-proof mask are provided with a plurality of second limiting bosses, and the plurality of second limiting bosses are uniformly and circumferentially spaced along the axial direction of the second hinge holes;

[0011] The welding cap is also provided with third hinge parts on both sides, the third hinge parts are provided with third hinge holes in the center, the third hinge parts on the outer side walls of the welding cap are provided with a plurality of second limiting grooves, and the plurality of second limiting grooves are uniformly and circumferentially spaced along the axial direction of the third hinge holes;

[0012] The welding mask, the splash-proof mask and the welding cap are hinged through two groups of turnover assemblies, the two groups of turnover assemblies, the two first hinge holes of the welding mask, the two second hinge holes of the splash-proof mask and the two third hinge holes of the welding cap have a one-to-one correspondence, the turnover assembly comprises a rotating shaft and a limiting rotating sleeve, the limiting rotating sleeve penetrates through the corresponding second hinge hole of the splash-proof mask, the side wall of the limiting rotating sleeve on the outer side of the splash-proof mask extends outwardly and has an outwardly protruding ring part, the end face of the outwardly protruding ring part away from the splash-proof mask is provided with a plurality of first limiting grooves, the plurality of first limiting grooves are uniformly and circumferentially spaced along the axial direction of the limiting rotating sleeve, the plurality of first limiting grooves of the limiting rotating sleeve can be matched with the plurality of first limiting bosses of the welding mask, the plurality of second limiting grooves of the third hinge part can be matched with the plurality of second limiting bosses of the splash-proof mask, the limiting rotating sleeve is provided with a through hole in the center, and the through hole is matched with the rotating shaft; the rotating shaft penetrates through the corresponding first hinge hole of the first hinge part, the through hole of the limiting rotating sleeve and the third hinge hole of the third hinge part in sequence.

[0013] On the basis of the above technical scheme, the utility model still can make improvement as follows.

[0014] Further, the reset spring sheet further comprises a spring sheet body, two first resilient sheet bodies and two second resilient sheet bodies, the spring sheet body abuts against the welding cap, the two first resilient sheet bodies are matched with the inner side end of the rotating shaft, the two first resilient sheet bodies have a tendency to move towards the inner side of the welding cap, the second resilient sheet body is matched with the inner side end of the limiting rotating sleeve, and the two second resilient sheet bodies have a tendency to move towards the inner side of the welding cap.

[0015] Further, the inner side end of the rotating shaft is provided with a first clamping groove, the two first resilient sheet bodies of the reset spring sheet are clamped in the first clamping groove of the rotating shaft, the inner side end of the limiting rotating sleeve is provided with a second clamping groove, and the two second resilient sheet bodies are clamped in the second clamping groove of the limiting rotating sleeve.

[0016] Further, the welding cap is provided with spring chamber accommodating reset spring on both sides of the third hinge part.

[0017] Further, the welding cap is provided with air inlet pipe mechanism.

[0018] After adopting such structure, when the welding mask is turned over, the first limiting boss is disengaged from the first limiting groove, the welding mask is rotated to a new angle, and the reset spring pushes the first limiting boss and the first limiting groove to reengage; similarly, when the splash guard mask is turned over, the second limiting boss is disengaged from the second limiting groove, the splash guard mask is rotated to a new angle, and the reset spring pushes the second limiting boss and the second limiting groove to reengage.

[0019] The welding helmet has the following advantages:

[0020] (1) Independent angle retention: the angle adjustment of the welding mask does not affect the position of the splash guard mask, the boss-groove system is physically isolated, and the double masks can be independently stopped at any position between 0° and 75°.

[0021] (2) Precise reset guarantee: the double-acting force design of the reset spring ensures that the shaft is displaced inward until the welding mask is locked, and the limiting sleeve is displaced inward to lock the splash guard mask.

[0022] (3) Single-handed operation: the user can independently operate either mask with one hand, and the function of preventing accidental touch is also provided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a right view of the welding helmet.

[0024] Figure 2 is Figure 1 a sectional view along A-A.

[0025] Figure 3 is Figure 2 an enlarged view of part B of

[0026] Figure 4 is a perspective view of the welding mask in the welding helmet.

[0027] Figure 5 is a perspective view of the splash guard mask in the welding helmet.

[0028] Figure 6 is a perspective view of the welding cap and air inlet pipe mechanism in the welding helmet.

[0029] Figure 7 is a perspective view of the turning assembly in the welding helmet.

[0030] Figure 8 is the perspective view of the rotating shaft in the secondary mask independent adjustment structure embodiment of the welding helmet.

[0031] Figure 9 is the perspective view of the reset spring in the secondary mask independent adjustment structure embodiment of the welding helmet.

[0032] Figure 10 is the perspective view of the limiting rotating sleeve in the secondary mask independent adjustment structure embodiment of the welding helmet.

[0033] Explanation of reference numerals in the drawings:

[0034] welding mask-100;first hinged part-110;first hinged hole-111;first limiting boss-112;automatic light-changing lens-120;splash-proof mask-200;second hinged part-210;second hinged hole-211;second limiting boss-212;welding cap-300;third hinged part-310;third hinged hole-311;second limiting groove-312;spring chamber-313;air inlet pipe mechanism-400;rotating shaft-510;first clamping groove-511;plug-512;limiting rotating sleeve-520;outer convex ring part-521;first limiting groove-522;second clamping groove-523;through hole-524;reset spring-530;spring main body-531;first elastic sheet body-532;second elastic sheet body-533. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order to avoid unnecessarily obscuring the present application. The use of the same reference numerals in different drawings indicates similar and / or like components.

[0036] The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] Reference will now be made to Figures 1 to 10.

[0039] The welding helmet comprises a welding mask 100, a splash-proof mask 200 and a welding cap 300, the welding mask 100 is provided with an automatic light-changing lens 120, the welding mask 100 and the splash-proof mask 200 are hinged on the welding cap 300, and the welding mask 100 is located outside the splash-proof mask 200.

[0040] In the secondary mask independent adjustment structure of the welding helmet, the welding mask 100 is provided with a first hinge part 110 on both sides, the first hinge part 110 is provided with a first hinge hole 111 in the center, the first hinge part 110 on the inner side wall of the welding mask 100 is provided with a plurality of first limiting bosses 112, the plurality of first limiting bosses 112 are uniformly circumferentially distributed along the axis direction of the first hinge hole 111, and the plurality of first limiting bosses 112 are sequentially and equidistantly distributed.

[0041] The splash-proof mask 200 is provided with a second hinge part 210 on both sides, the second hinge part 210 is provided with a second hinge hole 211 in the center, the second hinge part 210 on the inner side wall of the splash-proof mask 200 is provided with a plurality of second limiting bosses 212, the plurality of second limiting bosses 212 are uniformly circumferentially distributed along the axis direction of the second hinge hole 211, and the plurality of second limiting bosses 212 are sequentially and equidistantly distributed.

[0042] The welding cap 300 is also provided with a third hinge part 310 on both sides, the third hinge part 310 is provided with a third hinge hole 311 in the center, the third hinge part 310 on the outer side wall of the welding cap 300 is provided with a plurality of second limiting grooves 312, the plurality of second limiting grooves 312 are uniformly circumferentially distributed along the axis direction of the third hinge hole 311, and the plurality of second limiting grooves 312 are sequentially and equidistantly distributed.

[0043] The welding cap 300 is also provided with a third hinge part 310 on both sides, the third hinge part 310 is provided with a third hinge hole 311 in the center, the third hinge part 310 on the outer side wall of the welding cap 300 is provided with a plurality of second limiting grooves 312, the plurality of second limiting grooves 312 are uniformly circumferentially distributed along the axis direction of the third hinge hole 311, and the plurality of second limiting grooves 312 are sequentially and equidistantly distributed.

[0044] The welding mask 100, the splash guard 200 and the welding cap 300 are hinged through two sets of turnover assemblies, the two sets of turnover assemblies, the two first hinge holes 111 of the welding mask 100, the two second hinge holes 211 of the splash guard 200 and the two third hinge holes 311 of the welding cap 300 are in one-to-one correspondence, the turnover assembly comprises a rotating shaft 510, a reset spring piece 530 and a limiting rotating sleeve 520, the limiting rotating sleeve 520 penetrates through the corresponding second hinge hole 211 of the splash guard 200, the side wall of the limiting rotating sleeve 520 outside the splash guard 200 extends outwardly and has an outwardly convex ring part 521, a plurality of first limiting grooves 522 are arranged on the end face of the outwardly convex ring part 521 away from the splash guard 200, the plurality of first limiting grooves 522 are uniformly circumferentially distributed along the axis direction of the limiting rotating sleeve 520, and the plurality of first limiting grooves 522 are sequentially and equidistantly distributed, the plurality of first limiting grooves 522 of the limiting rotating sleeve 520 can cooperate with the plurality of first limiting bosses 112 of the welding mask 100, the plurality of second limiting grooves 312 of the third hinge part 310 can cooperate with the plurality of second limiting bosses 212 of the splash guard 200, a through hole 524 is formed in the center of the limiting rotating sleeve 520 and matched with the rotating shaft 510, the rotating shaft 510 sequentially penetrates through the corresponding first hinge hole 111 of the first hinge part 110, the through hole 524 of the limiting rotating sleeve 520 and the third hinge hole 311 of the third hinge part 310, and the outer side end of the rotating shaft 510 extends outwardly and has a plug 512.

[0045] The reset spring piece 530 comprises a spring piece body 531, two first rebound piece bodies 532 and two second rebound piece bodies 533, the spring piece body 531 abuts against the welding cap 300, a first clamping groove 511 is formed in the inner side end of the rotating shaft 510, the two first rebound piece bodies 532 of the reset spring piece 530 are clamped in the first clamping groove 511 of the rotating shaft 510, the two first rebound piece bodies 532 have a tendency to move towards the inner side of the welding cap 300 in action of the rotating shaft 510, a second clamping groove 523 is formed in the inner side end of the limiting rotating sleeve 520, and the two second rebound piece bodies 533 are clamped in the second clamping groove 523 of the limiting rotating sleeve 520, so that the two second rebound piece bodies 533 have a tendency to move towards the inner side of the welding cap 300 in action of the limiting rotating sleeve 520.

[0046] The welding mask 100 is located at the outermost side of the welding helmet, when the welding mask 100 is turned over, the welding mask 100 rotates along the center line direction of the first hinge hole 111 of the first hinge part 110, the plurality of first limiting bosses 112 of the welding mask 100 and the plurality of first limiting grooves 522 of the limiting rotating sleeve 520 are staggered and matched, and after being turned over, the plurality of first limiting bosses 112 of the welding mask 100 and the plurality of first limiting grooves 522 of the limiting rotating sleeve 520 are still closely matched under the action of the reset spring piece 530.

[0047] Similarly, when the splash-proof mask 200 is flipped, the splash-proof mask 200 rotates along the center line direction of the second hinge hole 211 of the second hinge portion 210, and the second limiting convex platforms 212 of the splash-proof mask 200 are in staggered cooperation with the second limiting grooves 312 of the welding cap 300. After being flipped, the second limiting convex platforms 212 of the splash-proof mask 200 and the second limiting grooves 312 of the welding cap 300 are still in close cooperation under the action of the reset spring 530.

[0048] The flipping action of the welding mask 100 and the flipping of the splash-proof mask 200 do not affect each other, and the two can present different flipping angles relative to the welding cap 300.

[0049] The above is only one embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of variations and improvements can be made, which should be considered as belonging to the protection scope of the present application.

Claims

1. A secondary mask independent adjustment structure of a welding helmet, the welding helmet comprising a welding mask (100), a splash guard mask (200) and a welding cap (300), the welding mask (100) and the splash guard mask (200) are both hinged on the welding cap (300), the welding mask (100) is outside the splash guard mask (200), characterized in that: the welding mask (100) is respectively provided with a first hinge part (110) on both sides, the first hinge part (110) is provided with a first hinge hole (111) in the center, the first hinge part (110) on the inner side wall of the welding mask (100) is provided with a plurality of first limiting bosses (112), and the plurality of first limiting bosses (112) are uniformly and circumferentially spaced along the axis direction of the first hinge hole (111); the splash guard mask (200) is respectively provided with a second hinge part (210) on both sides, the second hinge part (210) is provided with a second hinge hole (211) in the center, the second hinge part (210) on the inner side wall of the splash guard mask (200) is provided with a plurality of second limiting bosses (212), and the plurality of second limiting bosses (212) are uniformly and circumferentially spaced along the axis direction of the second hinge hole (211); the welding cap (300) is also respectively provided with a third hinge part (310) on both sides, the third hinge part (310) is provided with a third hinge hole (311) in the center, the third hinge part (310) on the outer side wall of the welding cap (300) is provided with a plurality of second limiting grooves (312), and the plurality of second limiting grooves (312) are uniformly and circumferentially spaced along the axis direction of the third hinge hole (311). ​ ​ ​ The welding mask (100), the splash guard (200) and the welding cap (300) are hinged through two groups of turnover assemblies, the two groups of turnover assemblies, the two first hinge holes (111) of the welding mask (100), the two second hinge holes (211) of the splash guard (200) and the two third hinge holes (311) of the welding cap (300) are in one-to-one correspondence, the turnover assembly comprises a rotating shaft (510) and a limiting rotating sleeve (520), the limiting rotating sleeve (520) penetrates through the corresponding second hinge hole (211) of the splash guard (200), the side wall of the limiting rotating sleeve (520) outside the splash guard (200) extends outwardly and has an outwardly convex ring part (521), a plurality of first limiting grooves (522) are arranged on the end face of the outwardly convex ring part (521) away from the splash guard (200), the plurality of first limiting grooves (522) are uniformly and circumferentially spaced along the axis direction of the limiting rotating sleeve (520), the plurality of first limiting grooves (522) of the limiting rotating sleeve (520) can cooperate with the plurality of first limiting bosses (112) of the welding mask (100), the plurality of second limiting grooves (312) of the third hinge part (310) can cooperate with the plurality of second limiting bosses (212) of the splash guard (200), the limiting rotating sleeve (520) is provided with a through hole (524) in the center and matched with the rotating shaft (510), the rotating shaft (510) penetrates through the corresponding first hinge hole (111) of the first hinge part (110), the through hole (524) of the limiting rotating sleeve (520) and the third hinge hole (311) of the third hinge part (310) in sequence.

2. The secondary mask independent adjustment structure of the welding helmet according to claim 1, characterized in that: Further comprising a reset spring piece (530), the reset spring piece (530) comprises a spring piece main body (531), two first resilient piece bodies (532) and two second resilient piece bodies (533), the spring piece main body (531) abuts against the welding cap (300), the two first resilient piece bodies (532) cooperate with the inner side end of the rotating shaft (510), the two first resilient piece bodies (532) have a tendency to move towards the inner side of the welding cap (300) in action of the rotating shaft (510), the second resilient piece bodies (533) cooperate with the inner side end of the limiting rotating sleeve (520), the two second resilient piece bodies (533) have a tendency to move towards the inner side of the welding cap (300) in action of the limiting rotating sleeve (520).

3. The secondary mask independent adjustment structure of the welding helmet according to claim 2, characterized in that: The inner side end of the rotating shaft (510) is provided with a first clamping groove (511), the two first resilient piece bodies (532) of the reset spring piece (530) are clamped in the first clamping groove (511) of the rotating shaft (510), the inner side end of the limiting rotating sleeve (520) is provided with a second clamping groove (523), the two second resilient piece bodies (533) are clamped in the second clamping groove (523) of the limiting rotating sleeve (520).

4. The secondary mask independent adjustment structure of the welding helmet according to claim 2, characterized in that: The spring cavity (313) containing the reset spring (530) is arranged on both sides of the welding cap (300) corresponding to the position of the third hinge (310).

5. The secondary face shield independent adjustment structure of the welding helmet according to claim 1, characterized in that: The welding cap (300) is fixed with an air inlet pipe mechanism (400).

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