Welding mask with lens convenient to disassemble and assemble

Abstract

The utility model discloses a welding mask with a lens convenient to disassemble and assemble, which comprises a mask body provided with a window; the protective lens and the side edge are folded inwards to form a connecting part, the connecting part comprises a binding face and a locking face, the locking mechanism is arranged between the locking face and the side edge of the window and comprises a lock catch and a lock plate which are matched with each other, one of the lock catch and the lock plate is located on the cover body, and the other one of the lock catch and the lock plate is located on the protective lens. The lock plate has a locking state matched with the lock catch and an unlocking state opposite to the lock catch; in the locking state, the protective lens and the cover body are mutually positioned, and in the unlocking state, the protective lens can be separated from the cover body. According to the technical scheme, through structural optimization of the cover body and the protective lens, rapid installation and removal of the protective lens can be achieved in combination with state switching of the locking plate, the use experience is effectively improved while the installation effect is guaranteed, and meanwhile the overall structure is simple and compact and easy to produce and assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of labor protection, in particular to a welding mask with lens convenient to disassemble and assemble. BACKGROUND

[0002] The welding mask is worn on the head and used to cover the face area to help the welder protect against harmful light such as strong light, ultraviolet light generated during the welding process and to isolate heat, dust and spatter. In the welding operation, the protective lens often needs to be maintained or replaced according to different working conditions.

[0003] For example, a filter lens quick-release mounting structure of a welding mask disclosed in Chinese patent document CN219516804U. It solves the technical problems of low service life of the existing filter lens disassembly part. It includes a filter lens mounting window provided on the mask body, a filter lens frame with a filter lens mounted in the filter lens mounting window, a filter lens mounting window one end and a filter lens frame one end connected through a clamping positioning assembly, a filter lens mounting window the other end provided with a positioning notch, a filter lens frame the other end provided with a quick-release positioning seat corresponding to the positioning notch, a quick-release positioning seat provided with a positioning pin shaft insertable into the positioning notch, and a quick-release assembly provided on the quick-release positioning seat to drive the positioning pin shaft.

[0004] Similar to the above-mentioned document, the lens mounting structure in the prior art cannot meet the requirements of convenience, stability and tightness of installation, structure life, assembly convenience and production economy, and there is room for improvement. Practical new type content

[0005] In order to solve the above technical problems, the present application discloses a welding mask with lens convenient to disassemble and assemble, which has opposite inner side and outer side, comprising:

[0006] The mask body is used to shield the face, and a viewing window is formed on the mask body;

[0007] The protective lens is installed on the viewing window, and the side edge of the protective lens is inwardly folded to form a connecting part, which includes a fitting surface fitted to the side edge of the viewing window and a locking surface facing away from the side edge of the viewing window,

[0008] The locking mechanism includes a lock and a lock plate that cooperate with each other, one of which is located on the mask body and the other of which is located on the protective lens, and the lock plate has a locking state and an opposite release state that cooperate with the lock. In the locking state, the protective lens and the mask body are positioned relative to each other, and in the release state, the protective lens can be separated from the mask body.

[0009] The following also provides several optional modes, but not as an additional limitation of the above general scheme, just a further supplement or preferred, without technical or logical contradiction, each optional mode can be combined alone for the above general scheme, but also can be combined between multiple optional modes.

[0010] In one embodiment, the side edge of the window is provided with a positioning groove for accommodating the connecting part, the cross section of the positioning groove is U-shaped, the first side wall of the positioning groove is matched with the fitting surface, the second side wall of the positioning groove is matched with the locking surface, and the second side wall is partially elastically arranged to form the locking piece.

[0011] In one embodiment, the first side wall of the positioning groove is outwardly turned towards the top edge of the outer side to form a limiting edge, and in the locked state, the folding part of the protective lens abuts against the limiting edge.

[0012] In one embodiment, the second side wall of the positioning groove is outwardly turned towards the top edge of the outer side to form a supporting part, and in the locked state, the supporting part abuts against the surface of the inner side of the protective lens.

[0013] In one embodiment, the lock buckles are arranged in groups, each group including at least two lock buckles arranged at intervals, and at least two groups of lock buckles are respectively located on the left and right sides of the protective lens.

[0014] In one embodiment, each group of lock buckles corresponds to one or more locking pieces.

[0015] In one embodiment, the lock buckle includes a guiding surface towards the inner side and an anti-disengagement surface towards the outer side, and in the process of mounting the protective lens to the cover body, the guiding surface drives the locking piece into the release state; in the locked state, the anti-disengagement surface is positioned with the locking piece.

[0016] In one embodiment, the locking piece is provided with a lock hole matched in shape with the lock buckle, and in the locked state, the anti-disengagement surface is matched with the side edge of the lock hole.

[0017] In one embodiment, in the locked state, the locking piece is fitted to the locking surface, and the end of the locking piece towards the outer side is raised compared with the protective lens to form a release gap.

[0018] In one embodiment, in the locked state, the outer surface of the protective lens close to the outer side is flush with the outer surface of the cover body.

[0019] The technical scheme disclosed by the application can realize quick installation and removal of the protective lens by optimizing the structure of the cover body and the protective lens and switching the state of the locking piece, effectively improving the use experience while ensuring the installation effect, and the overall structure is simple and compact, easy to produce and assemble.

[0020] The specific beneficial technical effects will be further explained in the specific embodiments in combination with specific structures or steps. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The welding mask structure schematic diagram for facilitating disassembly and assembly of the lens in an embodiment of the application;

[0022] Figure 2 The welding mask structure schematic diagram for facilitating disassembly and assembly of the lens in an embodiment of the application; Figure 1

[0023] Figure 3 The welding mask structure schematic diagram for facilitating disassembly and assembly of the lens in an embodiment of the application; Figure 2

[0024] Figure 4 The protective lens structure schematic diagram of the welding mask for facilitating disassembly and assembly of the lens;

[0025] Figure 5 The protective lens structure schematic diagram of the welding mask for facilitating disassembly and assembly of the lens; Figure 4

[0026] Figure 6 The welding mask structure schematic diagram for facilitating disassembly and assembly of the lens in an embodiment of the application; Figure 1

[0027] Figure 7 The welding mask structure schematic diagram for facilitating disassembly and assembly of the lens in an embodiment of the application; Figure 6

[0028] Explanation of reference signs in the drawings is as follows:

[0029] 100, cover body; 110, positioning groove; 111, first side wall; 112, second side wall; 113, limiting edge; 114, bearing part;

[0030] 200, protective lens; 210, connecting part; 211, fitting surface; 212, locking surface; 220, lock catch; 221, guide surface; 222, anti-disengagement surface;

[0031] 300, locking piece; 310, locking hole; 320, release gap. DETAILED DESCRIPTION

[0032] ​​​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0033] It should be noted that when a component is referred to as being "connected" with another component, it can be directly connected with the other component or there can be a middle component. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be a middle component.

[0034] 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 herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] Reference will now be made to the drawings, which depict only typical embodiments of the application, and are therefore not to be considered limiting of its scope, for the purpose of illustration. Figure 1 To the drawings Figure 5 As shown in the drawings, the present application discloses a welding mask with detachable lens, having opposite inner side and outer side, comprising a mask body 100 for shielding face, a protective lens 200 for covering the window on the mask body 100 and a locking mechanism for maintaining the relative position of the two. The protective lens 200 is installed on the window, and the side edge of the protective lens 200 is inwardly folded to form a connecting part 210, which includes a fitting surface 211 fitted to the side edge of the window and a locking surface 212 facing away from the side edge of the window. The locking mechanism includes a lock catch 220 and a lock plate 300 that cooperate with each other. In the embodiment shown in the drawings, the lock catch 220 is provided on the locking surface 212, i.e. the lock catch 220 is arranged on the protective lens 200. Cooperating with the lock catch 220, the lock plate 300 is connected to the side edge of the window and extends to the locking surface 212, i.e. the lock plate 300 is arranged on the mask body 100. The lock plate 300 has a locking state (see FIG. 1) and an opposite unlocking state that cooperate with the lock catch 220; in the locking state, the protective lens 200 is positioned with the mask body 100, and in the unlocking state, the protective lens 200 can be separated from the mask body 100. Figure 3 As shown in the drawings, the present application discloses a welding mask with detachable lens, having opposite inner side and outer side, comprising a mask body 100 for shielding face, a protective lens 200 for covering the window on the mask body 100 and a locking mechanism for maintaining the relative position of the two. The protective lens 200 is installed on the window, and the side edge of the protective lens 200 is inwardly folded to form a connecting part 210, which includes a fitting surface 211 fitted to the side edge of the window and a locking surface 212 facing away from the side edge of the window. The locking mechanism includes a lock catch 220 and a lock plate 300 that cooperate with each other. In the embodiment shown in the drawings, the lock catch 220 is provided on the locking surface 212, i.e. the lock catch 220 is arranged on the protective lens 200. Cooperating with the lock catch 220, the lock plate 300 is connected to the side edge of the window and extends to the locking surface 212, i.e. the lock plate 300 is arranged on the mask body 100. The lock plate 300 has a locking state (see FIG. 1) and an opposite unlocking state that cooperate with the lock catch 220; in the locking state, the protective lens 200 is positioned with the mask body 100, and in the unlocking state, the protective lens 200 can be separated from the mask body 100.

[0036] The technical solutions disclosed by the present application can realize the quick installation and removal of the protective lens 200 by optimizing the structure of the mask body 100 and the protective lens 200 and switching the state of the lock plate 300, which effectively improves the use experience while ensuring the installation effect, and the overall structure is simple and compact, easy to produce and assemble.

[0037] For details on the settings of latch 220 and locking plate 300, please refer to the appendix. Figure 3 To be continued Figure 5 In the illustrated embodiment, the latches 220 are arranged in groups, with each group including at least two latches 220 spaced apart, and at least two groups of latches 220 are located on the left and right sides of the protective lens 200, respectively. (See attached image) Figure 3 In this embodiment, each group of latches 220 corresponds to multiple locking plates 300, that is, a single latch 220 corresponds to a single locking plate 300. In other embodiments, a group of latches 220 may also correspond to one locking plate 300, that is, multiple latches 220 correspond to a single locking plate 300, for example, by attaching... Figure 3 The multiple locking plates 300 shown are integrated into a single locking plate 300. (See attached reference.) Figure 5 In the illustrated embodiment, the latch 220 includes an inwardly facing guide surface 221 and an outwardly facing anti-detachment surface 222. During the installation of the protective lens 200 onto the cover 100, the guide surface 221 drives the locking plate 300 into an unlocked state; in the locked state, the anti-detachment surface 222 and the locking plate 300 are mutually positioned. The locking plate 300 can be connected to the latch 220 through a corresponding locking structure, such as an anti-detachment structure similar to the anti-detachment surface 222 of the latch 220, or refer to the attached diagram. Figure 3 In the embodiment shown, the locking plate 300 is provided with a locking hole 310 that matches the shape of the latch 220. In the locked state, the anti-disengagement surface 222 engages with the side edge of the locking hole 310.

[0038] The state switching of the locking plate 300 can be achieved through a movable mechanism or through elastic deformation in this embodiment. The user can directly drive the locking plate 300 or indirectly drive it through an unlocking mechanism to achieve the state switching of the locking plate 300. (See attached...) Figure 3 and attached Figure 7 In the illustrated embodiment, in the locked state, the locking plate 300 is abutted against the locking surface 212, and the outer end of the locking plate 300 is raised relative to the protective lens 200 to form a release gap 320. The release gap 320 allows the user to apply force to the latch 220 to disengage the lock hole 310 and the latch 220. The release gap 320 is a wedge-shaped gap, meaning the opening size gradually decreases.

[0039] In addition to the cooperation between the latch 220 and the locking plate 300, the cover 100 can also enhance the connection effect of the protective lens 200 through the viewing window. (See attached document) Figure 3 Appendix Figure 6 and appendix Figure 7In the illustrated embodiment, the side edge of the window is provided with a positioning groove 110 for accommodating the connecting part 210. The positioning groove 110 has a U-shaped cross-section. The first sidewall 111 of the positioning groove 110 fits with the mating surface 211, and the second sidewall 112 of the positioning groove 110 fits with the locking surface 212. The second sidewall 112 is partially elastically configured to form a locking piece 300. The U-shaped positioning groove 110 can accommodate and position the connecting part 210, thereby strengthening the connection effect and sealing of the two, and avoiding the problem of reduced protective capability due to easy disassembly. At the same time, the positioning groove 110 can also prevent the protective lens 200 from directly applying external force to the locking piece 300 and the latch 220, ensuring the locking effect of the two. Furthermore, the positioning groove 110 can further improve the connection strength of the protective lens 200. See attached figure. Figure 7 In the illustrated embodiment, the first sidewall 111 of the positioning groove 110 folds outward at its top edge to form a limiting edge 113. In the locked state, the folded portion of the protective lens 200 abuts against the limiting edge 113. Particularly in the surface extension direction of the protective lens 200, the limiting edge 113 laterally supports the protective lens 200 to enhance its mechanical properties. Further, refer to the attached... Figure 3 and attached Figure 7 In the illustrated embodiment, the second sidewall 112 of the positioning groove 110 is turned outward at its top edge to form a support portion 114. In the locked state, the support portion 114 abuts against the inner surface of the protective lens 200. The support portion 114 provides support for the protective lens 200 on the inner side of the protective lens 200, thereby ensuring the connection strength of the protective lens 200.

[0040] Based on the above, those skilled in the art can undoubtedly understand the technical solution of having a latch 220 on the side edge of the window and a locking piece 300 on the locking surface 212, which will not be elaborated here.

[0041] With the above coordination, see attached... Figure 1 and appendix Figure 6 In the embodiment shown, in the locked state, the outer surface of the protective lens 200 near the outer side is flush with the outer surface of the cover 100.

[0042] The following, with reference to the accompanying drawings, describes the process of disassembling and installing the protective lens 200 of the welding mask with easily detachable lenses in this application:

[0043] When the user inserts a disassembly tool or finger into the release gap 320, the lock plate 300 moves away from the locking surface 212 and the latch 220 under the action of the driving force, and the cooperation between the latch 220 and the lock hole 310 is released.

[0044] The protective lens 200 can move freely from the inside to the outside. During this process, the connecting part 210 is pulled out from the positioning groove 110, and the supporting part 114 and the protective lens 200 separate from each other.

[0045] When the user has finished maintaining the protective lens 200 or is about to install another protective lens 200, they only need to align the connecting part 210 of the protective lens 200 with the positioning groove 110 and push the protective lens 200 from the outside to the inside. During the pushing process, the locking plate 300 avoids the locking buckle 220 under the action of the guide surface 221 of the locking buckle 220 so as to achieve the alignment of the locking buckle 220 and the lock hole 310 and finally complete the locking.

[0046] Overall, the protective lens 200 of the welding mask with easy-to-disassemble and assemble lens of this application is simple and quick to disassemble and install. At the same time, the protective lens 200 is stable, safe and has good sealing performance after installation. The overall structure is simple and compact, which is convenient for production and assembly.

[0047] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0048] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A welding helmet that facilitates lens removal and replacement, having opposite interior and exterior sides, characterized in that, The utility model relates to a face shield, comprising: a cover body for shielding a face, a window being formed on the cover body; a protective lens mounted on the window, a side edge of the protective lens being inwardly folded to form a connecting portion, the connecting portion comprising a fitting surface fitted to a side edge of the window and a locking surface facing away from the side edge of the window, a locking mechanism comprising a lock catch and a lock piece that cooperate with each other, one of the lock catch and the lock piece being located on the cover body and the other being located on the protective lens, the lock piece having a locking state and an opposite release state that cooperate with the lock catch; in the locking state, the protective lens and the cover body are positioned relative to each other, and in the release state, the protective lens can be separated from the cover body.

2. The weldings helmet with easy-to-replace lens of claim 1, wherein, A side edge of the window is provided with a positioning groove for accommodating the connecting portion, the positioning groove having a U-shaped cross section, a first side wall of the positioning groove being fitted to the fitting surface, a second side wall of the positioning groove being fitted to the locking surface, and the second side wall being partially elastically provided to form the lock piece.

3. The weldings helmet of claim 2, wherein, The first side wall of the positioning groove is outwardly turned towards the top edge of the outer side to form a limiting edge, and in the locking state, the folded portion of the protective lens abuts against the limiting edge.

4. The weldings helmet of claim 2, wherein, The second side wall of the positioning groove is outwardly turned towards the top edge of the outer side to form a supporting portion, and in the locking state, the supporting portion abuts against the surface on the inner side of the protective lens.

5. The weldings helmet of claim 1, wherein, The lock catches are arranged in groups, each group comprising at least two lock catches arranged at intervals, and at least two groups of lock catches are located on the left and right sides of the protective lens, respectively.

6. The weldings helmet of claim 5, wherein, Each group of lock catches corresponds to one or more lock pieces.

7. The weldings helmet with easy-to-change lenses of claim 1, wherein, The lock catch comprises a guide surface facing the inner side and an anti-disengagement surface facing the outer side, the guide surface driving the lock piece into the release state during the mounting of the protective lens to the cover body, and in the locking state, the anti-disengagement surface is positioned relative to the lock piece.

8. The weldings helmet of claim 7, wherein, The lock piece is provided with a lock hole that is shaped to match the lock catch, and in the locking state, the anti-disengagement surface is fitted to a side edge of the lock hole.

9. The weldings helmet of claim 1, wherein, In the locking state, the lock piece is fitted to the locking surface, and an end portion of the lock piece facing the outer side is raised relative to the protective lens to form a release gap.

10. The weldings helmet of claim 1, wherein, In the locking state, the outer surface of the protective lens close to the outer side is flush with the outer surface of the cover body.

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