Quick-release welding mask for lenses

Abstract

This application discloses a welding mask with quick lens assembly and disassembly, comprising: a mask body with a viewing window; a protective lens in a protective state; a positioning mechanism including a first positioning structure and a second positioning structure, the positioning mechanism having a positioning state and a disassembly state; in the positioning state, the positioning mechanism only allows the protective lens to rotate in the front-rear direction of the mask body; and a locking mechanism including a first locking structure and a second locking structure, the locking mechanism having a locked state and an unlocked state; in the locked state, the first locking structure and the second locking structure are mutually positioned in the front-rear direction and the locking mechanism can restrict the rotation of the protective lens relative to the mask body to keep the protective lens in the protective state. The technical solution disclosed in this application improves the installation process and cooperation effect of the protective lens through the mutual cooperation of the positioning mechanism and the locking mechanism, and has technical advantages such as convenient assembly and disassembly, stable and tight installation, and long structural life.

Description

Technical Field

[0001] This application relates to the field of occupational safety and health protection, and in particular to welding masks with quick lens removal and installation. Background Technology

[0002] Welding masks are worn on the head and cover the face to help welders protect themselves from harmful rays such as strong light and ultraviolet rays generated during the welding process, as well as to isolate them from heat, dust, and spatter. During welding operations, the protective lenses often need maintenance or replacement depending on the specific working conditions.

[0003] For example, Chinese patent document CN219516804U discloses a quick-release installation structure for a welded face mask filter. It solves the technical problems of low service life of existing filter disassembly components. It includes a filter installation window on the face mask body, a filter frame with filter elements installed within the window, one end of the window and one end of the frame connected by a snap-fit ​​positioning assembly, and a positioning notch at the other end of the window. A quick-release positioning seat corresponding to the notch is located at the other end of the frame. The quick-release positioning seat contains a positioning pin that can be inserted into the notch, and a quick-release assembly capable of driving the positioning pin is also provided on the seat.

[0004] Similar to the aforementioned literature, the existing lens mounting structures cannot simultaneously meet the requirements of ease of disassembly and assembly, stability and tightness of installation, structural lifespan, ease of assembly, and economic efficiency in production, thus leaving room for improvement. Utility Model Content

[0005] To address the aforementioned technical problems, this application discloses a welding mask with quick lens assembly and disassembly, having relative front-back, up-down, and left-right directions, including: A cover, on which a viewing window is provided; The protective lens is positioned on the cover and blocks the viewing window; The positioning mechanism includes a first positioning structure disposed on the cover and a second positioning structure disposed on one side edge of the protective lens. The positioning mechanism has a relative positioning state and a separated state. In the positioning state, the positioning mechanism only allows the protective lens to flip in the front-rear direction of the cover. The locking mechanism includes a first locking structure disposed on the cover and a second locking structure disposed on one side edge of the protective lens. The locking mechanism has a relative locked state and an unlocked state. In the locked state, the first locking structure and the second locking structure are positioned relative to each other in the front-rear direction and the locking mechanism can restrict the protective lens from flipping relative to the cover to keep the protective lens in the protective state.

[0006] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0007] In one embodiment, the side edge of the window is provided with a continuously extending mating groove, the mating groove including a first mating section with the groove opening towards the top side of the mask and a second mating section with the groove opening towards the outside of the mask, the second positioning structure mating with the first mating section, and the second locking structure mating with the second mating section.

[0008] In one embodiment, in the front-rear direction, the inner sidewall of the first mating segment is partially open to avoid the second positioning structure and allow the protective lens to flip.

[0009] In one embodiment, the protective lens is an integral structure with its lower side edge protruding downward to form the second positioning structure. One of the first positioning structure and the second positioning structure is provided with a positioning buckle, and the other is provided with a positioning hole. The positioning buckle and the positioning hole cooperate with each other to keep the positioning mechanism in the positioning state.

[0010] In one embodiment, the middle portion of the first mating section is open to form a receiving cavity for accommodating the second positioning structure, the receiving cavity comprising: Two cavity walls define the boundaries of the receiving cavity in the left-right direction, and the two side edges of the second positioning structure respectively cooperate with the cavity walls on the corresponding sides; Two guide arms are located between two cavity walls, and the second positioning structure is provided with guide grooves corresponding to each guide arm; A guide block is located between two guide arms. The second positioning structure is provided with a clearance groove corresponding to the guide block. Multiple positioning holes are provided and are respectively located on both sides of the clearance groove.

[0011] In one embodiment, the locking mechanism is provided in multiple locations, and the second locking structures of the multiple locking mechanisms are respectively located on both sides of the protective lens in the left-right direction.

[0012] In one embodiment, the protective lens is an integral structure with a portion of its side edge folded to form a connecting edge, and the second locking structure is disposed on the connecting edge.

[0013] In one embodiment, the second locking structure is sheet-like, and the first locking structure includes: A plug hole is provided on the cover and is used for the second locking structure to pass through; A locking element locks or releases the second locking structure to control its spatial position relative to the insertion hole.

[0014] In one embodiment, the gap between the locking member and the inner wall of the cover is an operating gap, and the second locking structure enters the operating gap in the front-back direction and is provided with a function for driving itself out of the operating gap; The locking element is provided with a drive end to move in the left-right direction; The functional part and the driving end are arranged adjacent to each other.

[0015] In one embodiment, the first locking structure includes a retainer located inside the insertion hole, the retainer being disposed opposite to the locking member, and the second locking structure passing through the insertion hole and abutting against the retainer.

[0016] The technical solution disclosed in this application improves the installation process and cooperation effect of the protective lens through the cooperation of the positioning mechanism and the locking mechanism, and has technical advantages such as convenient disassembly and assembly, stable and tight installation, and long structural life.

[0017] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with the specific structures or steps. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of a welding mask with quick lens assembly and disassembly in one embodiment of this application; Figure 2 This is a schematic diagram of the inner structure of the welding mask; Figure 3 A schematic diagram showing the fit between the cover and the protective lens of the welding mask; Figure 4 A schematic diagram showing the assembly of the welding mask body and protective lens from another perspective; Figure 5 for Figure 2 Enlarged schematic diagram of the positioning mechanism at point D; Figure 6 for Figure 1 Enlarged schematic diagram of the positioning mechanism from the perspective of the middle BB section; Figure 7 for Figure 2 Enlarged schematic diagram of the locking mechanism at point C; Figure 8 for Figure 1 Enlarged schematic diagram of the locking mechanism from the perspective of the AA section.

[0019] The annotations in the figure are explained as follows: 100. Cover; 110. Viewing window; 120. Mating groove; 121. First mating section; 122. Second mating section; 200. Protective lens; 210. Connecting edge; 300, Positioning mechanism; 310, Insertion part; 311, Guide groove; 312, Clearance groove; 320, Receiving cavity; 321, Cavity wall; 322, Guide arm; 323, Guide block; 330, Positioning buckle; 340, Positioning hole; 400 Locking mechanism; 410 Insertion piece; 420 Insertion hole; 430 Locking element; 440 Operating clearance; 450 Retaining element; 901. Front-back direction; 902. Up-down direction; 903. Left-right direction. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0022] 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 herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The welding mask in this application includes a mask body 100 and a protective lens 200 detachably mounted on the mask body 100. A viewing window 110 is provided on the mask body 100 to allow light to pass through. The protective lens 200 has a protective state positioned on the mask body 100 and blocking the viewing window 110 (e.g., with...). Figure 1 and attached Figure 2 (as shown) and the separate state from the cover 100 (e.g., attached) Figure 3 and attached Figure 4 (As shown). The cover 100 and the protective lens 200 have a structure that allows for changing the connection between them to allow for connection or separation.

[0024] To more clearly illustrate the fit between the components, see the attached diagram. Figure 2As shown, the welding mask has opposing front-to-back directions 901, up-down directions 902, and left-to-right directions 903. (See attached diagram.) Figure 1 This application discloses a welding mask with quick lens assembly and disassembly, including a cover body 100 and a protective lens 200 as mentioned above. The connection between the two is switched through a positioning mechanism 300 and a locking mechanism 400. When the positioning mechanism 300 is in the positioning state and the locking mechanism 400 is in the locking state, the relative position of the protective lens 200 and the cover body 100 is locked. When the locking mechanism 400 is in the unlocking state and the positioning mechanism 300 is in the positioning state, the protective lens 200 can be flipped relative to the cover body 100 to enter or exit the protective state. When the positioning mechanism 300 is in the disassembly state and the locking mechanism 400 is in the unlocking state, the protective lens 200 and the cover body 100 can be separated to achieve the disassembly of the protective lens 200.

[0025] In the specific configuration of the positioning mechanism 300, the positioning mechanism 300 includes a first positioning structure disposed on the cover 100 and a second positioning structure disposed on one side edge of the protective lens 200. The positioning mechanism 300 has a relative positioning state (e.g., attached). Figure 5 and attached Figure 6 (As shown) and in the separated state; in the positioned state, the positioning mechanism 300 only allows the protective lens 200 to rotate in the front-rear direction 901 of the cover 100. (See attached diagram) Figure 3 and attached Figure 4 In the illustrated embodiment, the protective lens 200 is an integral structure, and the second positioning structure is a plug-in portion 310 formed by the downward protrusion of the lower side edge of the protective lens 200. Corresponding to the plug-in portion 310, the first positioning structure is a receiving cavity 320 for accommodating the plug-in portion 310. The plug-in portion 310 has a sheet-like structure, and the shape of the receiving cavity 320 is complementary to that of the plug-in portion 310. (Refer to the attached drawing.) Figure 6 As indicated by the dashed arrow, the protective lens 200 can rotate relative to the housing 100 with the insertion portion 310 as the rotation base. The relative movement between the two can be released through the elastic deformation of the protective lens 200 itself or through structural cooperation. For example, in this embodiment, the inner sidewall of the receiving cavity 320 is partially open to avoid the insertion portion 310 and allow the protective lens 200 to rotate. Further, the receiving cavity 320 specifically includes: The two cavity walls 321 define the boundaries of the receiving cavity 320 in the left-right direction 903, and the two side edges of the insertion part 310 respectively mate with the cavity walls 321 on the corresponding side. Two guide arms 322 are located between two cavity walls 321, and the insertion part 310 is provided with guide grooves 311 corresponding to each guide arm 322; The guide block 323 is located between the two guide arms 322, and the insertion part 310 is provided with a relief groove 312 corresponding to the guide block 323.

[0026] The positioning mechanism 300 can maintain its position through either dimensional matching or structural matching. For example, one of the first and second positioning structures may have a positioning buckle 330, and the other may have a positioning hole 340. The positioning buckle 330 and the positioning hole 340 cooperate to hold the positioning mechanism 300 in its positioned state. (See attached...) Figure 5 In the embodiment shown, positioning holes 340 are provided on the insertion portion 310 of the protective lens 200, and multiple positioning holes 340 are provided and located on both sides of the clearance groove 312. Positioning buckles 330 are provided on the inner side of the outer sidewall of the receiving cavity 320.

[0027] The containment cavity 320 can be installed independently or in conjunction with other mechanisms, such as... Figure 4 In the illustrated embodiment, the side edge of the viewing window 110 is provided with a continuously extending mating groove 120. The mating groove 120 and the side edge of the protective lens 200 cooperate with each other to form a relatively sealed protective effect. The mating groove 120 can be differently provided for different side edges of the protective lens 200. For example, the mating groove 120 includes a first mating section 121 with its opening facing the top side of the mask and a second mating section 122 with its opening facing the outside of the mask. A second positioning structure is fitted into the first mating section 121, and a second locking structure is fitted into the second mating section 122. The middle part of the first mating section 121 is open to form the receiving cavity 320 mentioned above.

[0028] In the specific configuration of the locking mechanism 400, the locking mechanism 400 includes a first locking structure disposed on the cover 100 and a second locking structure disposed on one side edge of the protective lens 200. The locking mechanism 400 has a relative locked state (e.g., attached). Figure 7 and attached Figure 8 (As shown) and in the unlocked state, in the locked state, the first locking structure and the second locking structure are positioned relative to each other in the front-rear direction 901, and the locking mechanism 400 can restrict the protective lens 200 from rotating relative to the cover 100 to keep the protective lens 200 in a protective state. (See attached diagram) Figure 3 In the illustrated embodiment, the protective lens 200 is a single-piece structure with a portion of its side edge folded to form an insertion edge 210, and a second locking structure is disposed on the insertion edge 210. Further, the second locking structure is a sheet-like insertion piece 410, and the first locking structure includes: A plug hole 420 is provided on the cover 100 and is used for the second locking structure to pass through; Locking element 430 locks or releases the second locking structure to control its spatial position relative to the insertion hole 420.

[0029] In this embodiment, the locking member 430 is a spring piece extending from the plug-in piece 410. The locking member 430 has a latch, and the plug-in piece 410 has a locking hole. When the two are aligned, the latch engages with the locking hole under the elasticity of the spring piece to prevent the plug-in piece 410 from exiting the plug-in hole 420.

[0030] Reference Appendix Figure 8 In the illustrated embodiment, the gap between the locking member 430 and the inner wall of the cover 100 is the operating gap 440. The insert piece 410 enters the operating gap 440 in the front-rear direction 901 and has an actuating part for driving itself out of the operating gap 440. In this embodiment, the actuating part is the inner side edge of the insert piece 410. The locking member 430 has a driving end for moving in the left-right direction 903. In this embodiment, the driving end is the inner side edge of the locking member 430. The actuating part and the driving end are arranged adjacent to each other. Furthermore, they are arranged abutting against each other. The above arrangement enables that when the user drives the locking member 430 to move left and right to release the insert piece 410, a force is naturally applied to the insert piece 410 to exit the insert hole 420, improving the ease of operation when disassembling the protective lens 200.

[0031] To further improve the stability of the locking mechanism 400, please refer to the attached document. Figure 7 In the illustrated embodiment, the first locking structure includes a retainer 450 located inside the insertion hole 420, with the retainer 450 and the locking member 430 facing each other. The second locking structure passes through the insertion hole 420 and abuts against the retainer 450. The retainer 450 can laterally restrict the relative position between the insertion piece 410 entering the insertion hole 420 and the locking member 430, thereby ensuring the locking effect.

[0032] Reference Appendix Figure 3 In the illustrated embodiment, the locking mechanism 400 is provided in multiple locations, and the second locking structures of the multiple locking mechanisms 400 are respectively located on both sides of the protective lens 200 in the left-right direction 903. When the protective lens 200 is installed or removed, each locking mechanism 400 operates synchronously.

[0033] The installation process of the protective lens 200 is described in detail below with reference to the attached diagram: The protective lens 200 is driven to move in the vertical direction 902 to achieve the cooperation of the first positioning structure and the second positioning structure. For example, the insertion part 310 is inserted obliquely from top to bottom into the receiving cavity 320 and is held by the positioning port and positioning hole 340. The protective lens 200 and the mating groove 120 are engaged. For example, the protective lens 200 can rotate close to the cover 100 with the insertion part 310 as the rotation base point. The insertion edge 210 of the protective lens 200 is inserted into different areas of the mating groove 120. During this process, the insertion piece 410 moves backward in the front-back direction 901 to enter the insertion hole 420. The first locking structure and the second locking structure are engaged. The protective lens 200 and the cover 100 are connected to each other. The outer surface of the protective lens 200 is flush with the outer surface of the cover, forming a regular and well-sealed protective effect.

[0034] The disassembly process of the protective lens 200 is described in detail below with reference to the attached diagram: The second locking structure (e.g., locking member 430) of the locking mechanism 400 is driven to move relative to the first locking structure (e.g., plug-in piece 410). When multiple locking mechanisms 400 are provided, the second locking structures of each locking mechanism 400 move closer to each other to achieve the above-mentioned action. The first locking structure is driven to separate from the second locking structure. For example, the protective lens 200 can rotate away from the cover 100 with the insertion part 310 as the rotation base point, and the insertion piece 410 moves forward in the front-back direction 901 to separate from the insertion hole 420; at the same time, the insertion edge 210 of the protective lens 200 disengages from the mating groove 120 on the top side of the viewing window 110 to release the movement stroke of the protective lens 200 in the vertical direction 902. The protective lens 200 is driven to move in the vertical direction 902 to achieve the separation of the first positioning structure and the second positioning structure. During this process, the positioning buckle 330 and the positioning hole 340 can spontaneously complete the separation, and the protective lens 200 and the cover 100 are separated.

[0035] 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.

[0036] 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 with quick lens change, having opposite front and rear directions, upper and lower directions, and left and right directions, characterized by, include: A cover, on which a viewing window is provided; The protective lens is positioned on the cover and blocks the viewing window; The positioning mechanism includes a first positioning structure disposed on the cover and a second positioning structure disposed on one side edge of the protective lens. The positioning mechanism has a relative positioning state and a separated state. In the positioning state, the positioning mechanism only allows the protective lens to flip in the front-rear direction of the cover. The locking mechanism includes a first locking structure disposed on the cover and a second locking structure disposed on one side edge of the protective lens. The locking mechanism has a relative locked state and an unlocked state. In the locked state, the first locking structure and the second locking structure are positioned relative to each other in the front-rear direction and the locking mechanism can restrict the protective lens from flipping relative to the cover to keep the protective lens in the protective state.

2. The welding mask with quick lens disassembly and assembly according to claim 1, characterized in that, The side edge of the viewing window is provided with a continuously extending mating groove. The mating groove includes a first mating section with the groove opening towards the top side of the mask and a second mating section with the groove opening towards the outside of the mask. The second positioning structure is mated to the first mating section, and the second locking structure is mated to the second mating section.

3. The welding mask with quick lens disassembly and assembly according to claim 2, characterized in that, In the front-rear direction, the inner sidewall of the first mating section is partially open to avoid the second positioning structure and allow the protective lens to flip.

4. The welding mask with quick lens disassembly and assembly according to claim 3, characterized in that, The protective lens is an integral structure with its lower side edge protruding downward to form the second positioning structure. One of the first positioning structure and the second positioning structure is provided with a positioning buckle, and the other is provided with a positioning hole. The positioning buckle and the positioning hole cooperate with each other to keep the positioning mechanism in the positioning state.

5. The welding mask with quick lens disassembly and assembly according to claim 4, characterized in that, The middle portion of the first mating section is open to form a receiving cavity for accommodating the second positioning structure, the receiving cavity comprising: Two cavity walls define the boundaries of the receiving cavity in the left-right direction, and the two side edges of the second positioning structure respectively cooperate with the cavity walls on the corresponding sides; Two guide arms are located between two cavity walls, and the second positioning structure is provided with guide grooves corresponding to each guide arm; A guide block is located between two guide arms. The second positioning structure is provided with a clearance groove corresponding to the guide block. Multiple positioning holes are provided and are respectively located on both sides of the clearance groove.

6. The welding mask with quick lens disassembly and assembly according to claim 1, characterized in that, The locking mechanism has multiple locations, and the second locking structure of each locking mechanism is located on both sides of the protective lens in the left-right direction.

7. The welding mask with quick lens disassembly and assembly according to claim 6, characterized in that, The protective lens is an integral structure with part of its side edge folded to form a connecting edge, and the second locking structure is disposed on the connecting edge.

8. The welding mask with quick lens disassembly and assembly according to claim 7, characterized in that, The second locking structure is sheet-like, and the first locking structure includes: A plug hole is provided on the cover and is used for the second locking structure to pass through; A locking element locks or releases the second locking structure to control its spatial position relative to the insertion hole.

9. The welding mask with quick lens disassembly and assembly according to claim 8, characterized in that, The gap between the locking member and the inner wall of the cover is the operating gap. The second locking structure enters the operating gap in the front-back direction and is provided with a function to drive itself out of the operating gap. The locking element is provided with a drive end to move in the left-right direction; The functional part and the driving end are arranged adjacent to each other.

10. The welding mask with quick lens disassembly and assembly according to claim 9, characterized in that, The first locking structure includes a retainer located inside the insertion hole, the retainer being disposed opposite to the locking member, and the second locking structure passing through the insertion hole and abutting against the retainer.

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