Rotary locking welding mask

Abstract

The utility model discloses a rotationally-locked welding mask which comprises a mask body provided with a window. The connecting piece is rotationally arranged on the cover body and is provided with a first position and a second position which are opposite; a protective lens; the locking mechanism is arranged between the connecting piece and the protective lens, the locking mechanism comprises a locking column and a locking groove which are matched with each other, and the locking column is eccentrically arranged relative to the rotating axis of the connecting piece; each locking groove extends on the movement path of the locking column, one end of each locking groove is a closed locking end, and the other end of each locking groove is an open separation end; when the connecting piece is located at the first position, the locking column is located at the locking end and matched with the side wall of the corresponding locking groove so as to limit the relative position of the protective lens and the cover body. When the connecting piece is located at the second position, the locking column can retreat from the locking groove through the disengaging end so as to release the relative position of the protective lens and the cover body. According to the invention, the protective lens can be quickly dismounted and mounted, the stability and sealing of the protective lens are ensured, the production safety is ensured, and the use feeling is improved.

Description

Technical Field

[0001] This application relates to the field of occupational safety and health protection, and in particular to a rotary-locking welding mask. 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 rotation-locking welding mask, comprising:

[0006] A cover for shielding the face, the cover having a viewing window;

[0007] A connector is rotatably disposed on the cover and has a first position and a second position relative to each other;

[0008] Protective lenses are used to cover the viewing window;

[0009] A locking mechanism is disposed between the connector and the protective lens. The locking mechanism includes a locking pin and a locking groove that cooperate with each other. The locking pin is eccentrically positioned relative to the rotation axis of the connector. Each locking groove extends along the movement path of the locking pin, with one end of each locking groove being a closed locking end and the other end being an open disengaging end. When the connector is in the first position, the locking pin is located at the locking end and cooperates with the sidewall of the corresponding locking groove to restrict the relative position of the protective lens and the cover. When the connector is in the second position, the locking pin can exit the locking groove via the disengaging end to release the relative position of the protective lens and the cover.

[0010] 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.

[0011] In one embodiment, the cover is provided with an adapter hole, and the connector includes a rotating part that is inserted through the adapter hole and a drive disk connected to the rotating part. The drive disk includes a mating surface that fits against the cover and / or the protective lens and an outer side facing away from the rotating part. A locking mark is provided on the outer side, and a locking post is disposed on the mating surface.

[0012] In one embodiment, the mating surface is further provided with a mating rib, which extends in the rotational direction of the connector. When the protective lens is installed on the cover, at least a portion of the mating rib abuts against the protective lens.

[0013] In one embodiment, the mating rib is disposed adjacent to the locking post and the two are connected to each other by a reinforcing rib.

[0014] In one embodiment, a limiting post is further provided on the mating surface, and a positioning groove that mates with the limiting post is provided on the cover. The positioning groove includes a first positioning sidewall and a second positioning sidewall opposite to each other, and a plurality of positioning protrusions located between the two positioning sidewalls. When the connector is in the first position, the limiting post abuts against the first positioning sidewall. When the connector is in the second position, the limiting post abuts against the second positioning sidewall. During the movement of the connector between the first position and the second position, the limiting post passes over the corresponding positioning protrusion.

[0015] In one embodiment, the adapter hole is a through-hole, and the connector further includes a positioning member that passes through the adapter hole from the other side and engages with the rotating part.

[0016] In one embodiment, the rotating part includes a plurality of spaced-apart engaging parts, the outer peripheral surface of the engaging parts and the inner peripheral surface of the adapter hole are rotatably engaged with each other, the end of the engaging part away from the drive disk is provided with a claw that engages with the side edge of the adapter hole, and the positioning member is inserted in the gap between each engaging part and maintains the relative position between each engaging part to prevent the rotating part from disengaging from the adapter hole.

[0017] In one embodiment, the drive disk has a radially protruding drive handle that extends toward the protective lens.

[0018] In one embodiment, the cover is provided with a stop surface. When the protective lens is installed on the cover, the stop surface faces the detachment end. When the connector is in the second position, the locking pin abuts against the stop surface.

[0019] In one embodiment, the cover includes an outer cover and an inner cover that rotate and cooperate with each other. The protective lens is disposed on the outer cover via the connector. When the connector is in the first position, the protective lens can rotate with the outer cover relative to the inner cover to open or cover the window of the inner cover.

[0020] The technical solution disclosed in this application optimizes the connection structure between the protective lens and the cover, and improves the connectors, enabling the rapid disassembly and installation of the protective lens, while ensuring the stability and airtightness of the protective lens in the installed state, thus ensuring production safety and improving the user experience.

[0021] 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

[0022] Figure 1 This is a schematic diagram of a rotation-locked welding mask structure in one embodiment of this application;

[0023] Figure 2 for Figure 1 A schematic diagram of the rotation-locking welding mask component in the diagram;

[0024] Figure 3 A schematic diagram of the mating surface of the connector for a rotationally locked welding mask;

[0025] Figure 4 A schematic diagram of the rotating and locked welding mask from a bottom view.

[0026] Figure 5 for Figure 4 A cross-sectional schematic diagram of the welding mask AA with rotational locking in the middle;

[0027] Figure 6A schematic diagram showing the connection between the welding mask connector and the protective lens for rotation locking.

[0028] The annotations in the figure are explained as follows:

[0029] 100. Cover body; 110. Outer cover; 120. Inner cover; 130. Adaptor hole; 140. Positioning groove; 141. First positioning sidewall; 142. Second positioning sidewall; 143. Positioning protrusion; 150. Stop surface;

[0030] 200. Connector; 210. Locking pin; 220. Rotating part; 221. Engaging part; 222. Claw; 223. Positioning hole; 230. Drive plate; 231. Mating surface; 232. Outer surface; 233. Drive handle; 234. Locking mark; 240. Mating rib; 250. Reinforcing rib; 260. Limiting pin; 270. Positioning element; 271. Positioning buckle; 272. Engaging structure;

[0031] 300. Protective lens; 310. Locking groove; 311. Locking end; 312. Release end; 320. Peninsula structure; 321. Stress relief groove. Detailed Implementation

[0032] 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.

[0033] 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.

[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 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.

[0035] Reference Appendix Figure 1 To be continued Figure 6As shown, this application discloses a rotary-locking welding mask, including a mask body 100 for covering the face, a connector 200 rotatably disposed on the mask body 100, a protective lens 300 for covering a viewing window opened on the mask body 100, and a locking mechanism for locking or unlocking the positional relationship between the two. In this embodiment, the connector 200 has a relative first position (see attached figure). Figure 1 Appendix Figure 5 and appendix Figure 6 (As shown in the figure) and the second position. The locking mechanism includes a locking pin 210 and a locking groove 310 that cooperate with each other. The cooperation between the locking pin 210 and the locking groove 310 is achieved by the movement of the connecting member 200. In the embodiment shown in the figure, the locking pin 210 is disposed on the connecting member 200, and the locking groove 310 is disposed on the protective lens 300. The two can also be interchanged, with the locking pin 210 disposed on the protective lens 300 and the locking groove 310 disposed on the connecting member 200. Further, the locking pin 210 rotates with the connecting member 200 and is eccentrically disposed relative to the rotation axis of the connecting member 200. As can be seen from the figure, the protective lens 300 is provided with locking grooves 310 on both sides, each locking groove 310 cooperates with the corresponding locking member 200, and each second locking member extends along the movement path of the first locking member. In the embodiment shown in the figure, the first locking member is the locking pin 210, and the second locking member is the locking groove 310. The two components can also be interchanged, with the second locking component being the locking pin 210 and the first locking component being the locking groove 310. Each locking groove 310 has a closed locking end 311 at one end and an open disengagement end 312 at the other end. When the connector 200 is in the first position, the locking pin 210 is located at the locking end 311 and engages with the sidewall of the corresponding locking groove 310 to restrict the relative position of the protective lens 300 and the cover 100; when the connector 200 is in the second position, the locking pin 210 can exit the locking groove 310 via the disengagement end 312 to release the relative position of the protective lens 300 and the cover 100.

[0036] The technical solution disclosed in this application optimizes the connection structure between the protective lens 300 and the cover 100, and improves the connector 200, enabling the rapid disassembly and installation of the protective lens 300, while ensuring the stability and airtightness of the protective lens 300 in the installed state, thus ensuring production safety and improving the user experience.

[0037] Reference Appendix Figure 1 and attached Figure 2In the illustrated embodiment, the connector 200 is located on the outside of the cover 100 for easy operation. One connector 200 corresponds to each side of the protective lens 300, allowing for individual locking or unlocking of both sides of the protective lens 300. Multiple connectors 200 can be linked or implemented independently. For the installation of the connector 200, the cover 100 has an adapter hole 130. The connector 200 includes a rotating part 220 that penetrates and inserts into the adapter hole 130 and a drive disk 230 connected to the rotating part 220. The drive disk 230 includes a mating surface 231 that conforms to the cover 100 and / or the protective lens 300 and an outer surface 232 facing away from the rotating part 220. A locking pin 210 is disposed on the mating surface 231. Besides covering the components to improve appearance, the drive disk 230 can also increase its radial dimension to improve the driving feel of the connector 200. In one embodiment, the outer edge of the drive disk 230 can also be provided with a friction-enhancing structure to increase friction. Alternatively, refer to the attached diagram. Figure 2 As shown, the drive disc 230 has a radially protruding drive handle 233 extending toward the protective lens 300. Besides improving the driving feel, the drive handle 233 also provides an indication to the user of the position of the connector 200, thereby preventing accidental unlocking or improper locking of the protective lens 300 due to misoperation. Furthermore, in this embodiment, a locking mark 234 is also provided on the outer surface 232 to further reduce the learning curve.

[0038] For details regarding the fit between connector 200 and protective lens 300, please refer to the attached document. Figure 3 To be continued Figure 6In the illustrated embodiment, the mating surface 231 is further provided with a mating rib 240, which extends in the rotational direction of the connector 200. When the protective lens 300 is installed on the cover 100, at least a portion of the mating rib 240 abuts against the protective lens 300. The locking groove 310 extends in an arc shape, forming a three-sided unconnected peninsula structure 320 on the side edge of the protective lens 300. The side edge of the peninsula structure 320 facing the locking groove 310 constitutes the sidewall of the locking groove 310. When the locking pin 210 is in the first position, the side edge of the peninsula structure 320 facing the locking groove 310 cooperates with the locking pin 210 to lock the protective lens 300. To avoid stress concentration in the peninsula structure 320, a stress relief groove 321 is provided near the locking end 311 of the peninsula structure 320 to prevent tearing between the peninsula structure 320 and other parts of the protective lens 300 at this location. When the protective lens 300 is installed onto the housing 100, the mating rib 240 abuts against the peninsula structure 320 to prevent movement of the peninsula structure 320 and other parts of the protective lens 300 along the rotation axis of the connector 200, thereby improving the installation stability of the protective lens 300. In addition to the above-mentioned function, the mating rib 240 can also be used to improve the mechanical performance of the locking post 210. For example, the mating rib 240 is positioned adjacent to the locking post 210 and the two are connected to each other by a reinforcing rib 250.

[0039] To improve the operational feel of the connector 200, a corresponding guide structure can be provided. Referring to the embodiment shown in the attached drawings, a limiting post 260 is also provided on the mating surface 231, and a positioning groove 140 is provided on the cover 100 to mate with the limiting post 260. The positioning groove 140 includes a first positioning sidewall 141 and a second positioning sidewall 142 facing each other, and a plurality of positioning protrusions 143 located between the two positioning sidewalls. When the connector 200 is in the first position, the limiting post 260 abuts against the first positioning sidewall 141; when the connector 200 is in the second position, the limiting post 260 abuts against the second positioning sidewall 142. During the movement of the connector 200 between the first and second positions, the limiting post 260 passes over the corresponding positioning protrusion 143. The positioning protrusions 143 can provide a change in feel for the drive of the connector 200 while maintaining the relative position of the connector 200, thereby improving the user experience. Further, referring to the attached drawings… Figure 2In the illustrated embodiment, the cover 100 is provided with a stop surface 150. When the protective lens 300 is installed on the cover 100, the stop surface 150 is aligned with the release end 312. When the connector 200 is in the second position, the locking pin 210 abuts against the stop surface 150. The stop surface 150 can also limit the movement stroke of the connector 200. Simultaneously, it can also assist the locking pin 210 in withstanding the impact of the protective lens 300 on the locking pin 210 during installation, improving the stability of the connector 200. In this embodiment, the stop surface 150 and the release end 312 are either abutted or spaced apart.

[0040] As can be seen from the above, the locking strength of the protective lens 300 depends on the connection strength between the connector 200 and the housing 100; therefore, a stable connection is required between the two, such as through fasteners. See also the appendix. Figure 2 Appendix Figure 6 In the illustrated embodiment, the adapter hole 130 is a through-hole, and the connector 200 further includes a positioning member 270 that penetrates through the adapter hole 130 from the other side and engages with the rotating part 220. In this embodiment, the rotating part 220 includes a plurality of spaced-apart engaging parts 221. The outer peripheral surface of the engaging part 221 and the inner peripheral surface of the adapter hole 130 are rotatably engaged with each other. The end of the engaging part 221 away from the drive disk 230 is provided with a claw 222 that engages with the side edge of the adapter hole 130. The positioning member 270 is inserted into the gap between each engaging part 221 and maintains the relative position between each engaging part 221 to prevent the rotating part 220 from disengaging from the adapter hole 130. Furthermore, the engaging portion 221 has a positioning hole 223 near the drive disk 230, and the positioning member 270 has a positioning buckle 271 that mates with the positioning hole 223. The positioning buckle 271 and the positioning hole 223 cooperate to achieve axial connection between the positioning member 270 and the rotating portion 220 along the rotation axis. The positioning member 270 can also assist the rotating portion 220 in improving its connection strength with the cover 100. For example, the positioning member 270 has an engaging structure 272 at the end of the cover 100. Both the engaging structure 272 and the claw 222 cooperate with the side edge of the adapter hole 130 to achieve locking. Figure 6 In the middle, the locking structure 272 and the claw 222 adopt the same structure.

[0041] Thanks to its high-strength installation structure and externally mounted connector 200, the protective lens 300 remains stable during the movement of the housing 100. Therefore, refer to the attached... Figure 1In the illustrated embodiment, the cover 100 includes an outer cover 110 and an inner cover 120 that rotate and engage with each other. A protective lens 300 is mounted on the outer cover 110 via a connector 200. When the connector 200 is in a first position, the protective lens 300 can rotate relative to the inner cover 120 along with the outer cover 110 to open or close the viewing window of the inner cover 120. This double-layer protective cover structure allows for more flexible configuration of the protective lenses 300, thereby improving adaptability.

[0042] Based on the above, those skilled in the art can undoubtedly understand the technical solution of the locking post 210 being disposed on the protective lens 300 and the locking groove 310 being disposed on the connector 200, which will not be elaborated here.

[0043] 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.

[0044] 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 rotationally-locked welding helmet characterized by, The application relates to a protective mask, comprising: a mask body for shielding a face, a window being formed on the mask body; a connecting member being rotatably arranged on the mask body and having opposite first and second positions; a protective lens for covering the window; a locking mechanism being arranged between the connecting member and the protective lens, the locking mechanism comprising locking columns and locking grooves which are matched with each other, the locking columns being eccentrically arranged relative to the rotating axis of the connecting member, each locking groove extending on the movement path of the locking column, and each locking groove having a closed locking end and an open disengaging end; when the connecting member is in the first position, the locking column is located at the locking end and matched with the sidewall of the corresponding locking groove to limit the relative position of the protective lens and the mask body; when the connecting member is in the second position, the locking column can exit the locking groove through the disengaging end to release the relative position of the protective lens and the mask body. The mask body is provided with an adapting hole, the connecting member comprises a rotating part which is inserted through the adapting hole and a driving disc which is connected with the rotating part, the driving disc comprises a matching surface which is matched with the mask body and / or the protective lens and an outer side surface which faces away from the rotating part, the outer side surface is provided with a locking mark, and the locking column is arranged on the matching surface. The matching surface is further provided with a matching convex rib which extends in the rotating direction of the connecting member, at least a part of the matching convex rib abuts against the protective lens when the protective lens is mounted on the mask body. The matching convex rib is arranged close to the locking column and connected with the locking column through a reinforcing rib. The matching surface is further provided with a limiting column, the mask body is provided with a positioning groove which is matched with the limiting column, the positioning groove comprises opposite first and second positioning sidewalls and a plurality of positioning protrusions which are located between the two positioning sidewalls, the limiting column abuts against the first positioning sidewall when the connecting member is in the first position, the limiting column abuts against the second positioning sidewall when the connecting member is in the second position, and the limiting column passes through the corresponding positioning protrusion during the movement of the connecting member between the first position and the second position. The adapting hole is through arrangement, and the connecting member further comprises a positioning member which is inserted through the adapting hole from the other side of the adapting hole and matched with the rotating part.

2. The rotatingly-locked welding helmet of claim 1, wherein, The rotating part comprises a plurality of spaced-apart clamping parts, the outer circumferential surface of the clamping part is rotatably matched with the inner circumferential surface of the adapting hole, the end of the clamping part which is far away from the driving disc is provided with a clamping jaw which is matched with the side edge of the adapting hole, the positioning member is inserted into the gap between the clamping parts and keeps the relative position between the clamping parts to prevent the rotating part from being separated from the adapting hole.

3. The rotatingly-locked welding helmet of claim 2, wherein, The driving disc is provided with a driving handle which protrudes radially and extends towards the protective lens.

4. The rotatingly-locked welding helmet of claim 3, wherein, The mask body is provided with a stop surface, the stop surface faces the disengaging end when the protective lens is mounted on the mask body, and the locking column abuts against the stop surface when the connecting member is in the second position.

5. The rotatingly-locked welding helmet of claim 2, wherein, ​ 6. The rotatingly-locked welding helmet of claim 2, wherein, ​ 7. The rotatingly-locked welding helmet of claim 6, wherein, ​ 8. The rotatingly-locked welding helmet of claim 2, wherein, ​ 9. The rotatingly-locked welding helmet of claim 1, wherein, ​ 10. The rotatingly-locked welding helmet of claim 1, wherein, The cover body comprises an outer cover and an inner cover which are rotationally coupled to each other, and the protective lens is arranged on the outer cover through the connecting piece, when the connecting piece is in the first position, the protective lens can rotate with the outer cover relative to the inner cover to open or shield the view window of the inner cover.

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