Flexible adjustment head wearing device and welding protection device

Abstract

The utility model discloses a head wearing device capable of being flexibly adjusted and a welding protection device, and the head wearing device comprises a restraint strap which is provided with a slide way, and the slide way extends in a first direction and is provided with a plurality of locking grooves; the sliding seat is in sliding fit with the slideway, and a rotating shaft and a guide column are arranged on the sliding seat; the locking piece is of an annular structure, a long-strip-shaped guide hole is formed in the locking piece, the locking piece can slide in the second direction and is provided with a locking position and an unlocking position, and the guide hole is matched with the guide column to be used for keeping the locking piece at the locking position or the unlocking position; the adaptive seat abuts against the sliding seat or the locking piece, and the adaptive seat is used for being connected with the expansion equipment; the adjusting knob is matched with the rotating shaft, and the adjusting knob has a positioning state for driving the sliding seat and / or the locking piece and / or the adaptive seat to abut against each other and a relative adjusting state. The component structure and the matching mode are optimized, the adjusting process is smooth, stability is achieved after adjustment, the overall structural strength is high, the service life is long, and production and assembly are convenient.

Description

Technical Field

[0001] This application relates to the field of occupational safety and health protection, and in particular to flexible adjustable headwear and welding protective devices. 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. A welding mask generally consists of a head-mounted device and a face shield attached to it. Due to differences in head shape and work habits, the front-to-back position and tilt angle of the mask need to be adjusted.

[0003] For example, Chinese patent document CN204618564U discloses a multi-position, multi-angle adjustment device for the distance of a welding protective mask headband. It includes connecting ears symmetrically arranged on both sides of the mask headband and having an internal hollow structure; multiple limiting blocks are provided on the outer wall of the headband at the upper end of the connecting ears, and the limiting blocks are arranged at intervals along an arc; an adjusting screw is provided in the ear hole of the connecting ear, and the adjusting screw passes through the ear hole from the inside of the connecting ear. A movable angle plate, a square plate, a round plate, and a locking knob are sequentially installed on the adjusting screw outside the ear wall of the connecting ear; one end of the movable angle plate is a right-angled triangular prism, and the other end is a round plate, which are connected by an arc plate. A limiting hole is provided on the right-angled triangular prism; a screw hole is provided on the round plate, and a semi-circular toothed platform is provided around the screw hole.

[0004] Similar to the aforementioned literature, existing technologies often use elastic elements to lock and unlock the mask relative to the head-wearing device. However, this approach cannot simultaneously address factors such as the smoothness of adjustment, the stability after adjustment, the lifespan of the adjustment structure, and production and assembly costs, leaving room for improvement. Utility Model Content

[0005] To address the aforementioned technical problems, this application discloses a flexibly adjustable head-wearing device, comprising:

[0006] A restraint strap for wearing on the head and having slides on both sides of the head, the slides extending in a first direction and having multiple locking grooves;

[0007] A sliding seat is slidably fitted to the slide rail. The sliding seat is provided with a rotating shaft extending away from the slide rail and a guide post arranged around the rotating shaft.

[0008] The locking member is a ring-shaped structure with an elongated guide hole inside. The locking member can slide in a second direction and has a locking position that matches one of the locking grooves and a corresponding unlocking position. The inner circumferential surface of the guide hole matches the outer circumferential surface of the guide post to hold the locking member in the locking position or the unlocking position.

[0009] An adapter is fitted onto the rotating shaft and abuts against the sliding seat or the locking member. The adapter is used to connect the extension device to enable the extension device to be worn.

[0010] An adjustment knob, which is coupled to the rotating shaft, has a positioning state that causes the sliding seat and / or the locking member and / or the adapter to abut against each other, and a relative adjustment state.

[0011] 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.

[0012] In one embodiment, the sliding seat has a lock hole that exposes the lock groove, and the locking member has a lock tongue. In the locked position, the lock tongue enters the lock hole and engages with the corresponding lock groove.

[0013] In one embodiment, the sidewall of the guide hole and the circumferential surface of the guide post are provided with a plurality of mutually cooperating limiting protrusions and a plurality of limiting grooves. When the locking member moves between the locking position and the unlocking position, the limiting protrusions enter or exit the corresponding limiting grooves.

[0014] In one embodiment, the adapter and the guide post abut against each other along the axial direction of the rotating shaft, and a first circumferential limiting structure is provided between them.

[0015] In one embodiment, the first circumferential limiting structure includes a first ratchet and a second ratchet that cooperate with each other. When the adjustment knob enters the positioning state and drives the components to press against each other, the first ratchet and the second ratchet engage. When the adjustment knob enters the adjustment state, the first ratchet and the second ratchet can rotate relative to each other under the action of external force.

[0016] In one embodiment, a second circumferential limiting structure is further provided between the adapter seat and the guide post. The second circumferential limiting structure includes a positioning pin and a positioning groove that cooperate with each other. The positioning pin is radially offset relative to the rotation axis. When the adapter seat rotates relative to the guide post with the rotation axis as the rotation axis, the positioning pin moves in the positioning groove.

[0017] In one embodiment, the sidewall of the positioning groove is provided with a positioning protrusion located on the movement path of the positioning pin. The positioning protrusion divides the positioning groove into a first positioning segment and a second positioning segment. Under the action of external force, the positioning pin can cross the positioning protrusion and enter the corresponding positioning segment.

[0018] In one embodiment, the adapter is a split structure and includes a first part for cooperating with an extension device and a second part for cooperating with the sliding seat or the locking member. Both the first part and the second part are rotatably disposed on the rotating shaft and are provided with a third circumferential limiting structure that cooperates with each other.

[0019] In one embodiment, the third circumferential limiting structure includes a circumferential locking piece disposed on one of the first part and the second part, and a plurality of positioning holes disposed on the other of the two parts. The circumferential locking piece and the positioning holes are eccentrically disposed relative to the rotation axis. The circumferential locking piece is elastically disposed and enters or exits the corresponding positioning hole by its own deformation.

[0020] This application also discloses a welding protection device, including a face mask and a flexibly adjustable head-wearing device as described in the above technical solution. The face mask is provided with a non-circular adapter hole, and the adapter seat and / or the adjustment knob passes through the adapter hole.

[0021] This application also discloses a method for adjusting a welding protection device, implemented based on the welding protection device described in the above technical solution, including:

[0022] The locking member is driven into the unlocking position in the second direction, and the spatial position of the mask relative to the restraint strap is unlocked in the first direction;

[0023] Drive the mask to move to a preset position in the first direction;

[0024] The locking member is driven into the locking position in the second direction, while in the first direction, the spatial position of the mask relative to the restraint strap is locked.

[0025] The technical solution disclosed in this application optimizes the component structure and fitting method, making it easy to adjust, ensuring a smooth adjustment process, and achieving stability after adjustment, thereby improving the user experience; at the same time, the overall structure has high strength and long service life, facilitating production and assembly, and improving economic efficiency.

[0026] 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

[0027] Figure 1 This is a schematic diagram of a flexibly adjustable head-wearing device in one embodiment of this application;

[0028] Figure 2 for Figure 1 A partial diagram showing the interaction between the head-mounted device and the extended device (mask);

[0029] Figures 3 to 4 This is a schematic diagram of different perspectives showing the head-wearing device and the extension device in one embodiment;

[0030] Figures 5 to 6 This is a schematic diagram of different perspectives showing the head-wearing device and the extension device in another embodiment;

[0031] Figure 7 for Figure 2 A cross-sectional schematic diagram of the head-mounted device;

[0032] Figure 8 This is a schematic diagram showing the positional engagement of the sliding seat and the locking element in one embodiment;

[0033] Figure 9 This is a schematic diagram of the positioning groove on the adapter seat in one embodiment;

[0034] Figure 10 for Figure 1 A schematic diagram of the flexible adjustable head-wearing device in its flattened state.

[0035] The annotations in the figure are explained as follows:

[0036] 100. Restraint strap; 110. Slide rail; 120. Locking groove;

[0037] 200, sliding seat; 201, locking hole; 210, rotating shaft; 211, slot; 220, guide post; 221, limiting groove; 222, first ratchet; 223, positioning pin;

[0038] 300. Locking element; 310. Guide hole; 311. Limiting protrusion; 320. Locking tongue;

[0039] 400, Adapter seat; 410, Second ratchet; 420, Drive side edge; 430, Positioning groove; 431, Positioning protrusion; 440, First part; 450, Second part; 451, Positioning buckle; 460, Circumferential locking piece; 470, Positioning hole;

[0040] 500. Adjustment knob;

[0041] 600. Face mask; 610. Adapter hole;

[0042] 910, First direction; 920, Second direction. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] See appendix Figure 1 To be continued Figure 10 In the illustrated embodiment, this application discloses a flexibly adjustable headwear device, including a restraint strap 100, a sliding seat 200, a locking member 300, an adapter seat 400, and an adjustment knob 500.

[0047] Restraint strap 100 is worn on the head to form a restraint system. (Combined with...) Figure 10 As can be seen, the restraint band 100 is a flexible structure with multiple branches, and each branch is connected to form a mesh structure to achieve cooperation. The restraint band 100 is provided with slide rails 110 on the two sides of the head, the slide rails 110 extend in the first direction 910 and are provided with multiple locking grooves 120, and the multiple locking grooves 120 are arranged in a row in the first direction 910 to provide multiple locking positions.

[0048] The sliding seat 200 is slidably fitted to the slide rail 110, and its spatial position relative to the constraint band 100 is adjusted by moving in the first direction 910. Figure 1 Multiple sliding seats 200 are provided, and the number of sliding tracks 110 is matched. The sliding seat 200 is provided with a rotating shaft 210 extending away from the sliding track 110 and a guide post 220 arranged around the rotating shaft 210. The rotating shaft 210 is used to provide an adjustment direction different from the first direction 910, such as the flipping of the cover relative to the restraint belt 100.

[0049] The locking member 300 has an annular structure and an elongated guide hole 310 inside. The locking member 300 can slide in the second direction 920 and has a locking position that matches one of the locking grooves 120 (see Appendix). Figure 7 The inner circumferential surface of the guide hole 310 and the outer circumferential surface of the guide post 220 are used to hold the locking member 300 in the locked position or the unlocked position.

[0050] The adapter 400 is fitted onto the rotating shaft 210 and abuts against the sliding seat 200 or the locking element 300. The adapter 400 is used to connect an expansion device (e.g., an accessory). Figure 2 The portion of the mask shown (600) is used to enable the wearing of extended devices.

[0051] The adjustment knob 500 is fitted to the rotating shaft 210. The adjustment knob 500 has a positioning state in which the sliding seat 200 and / or the locking element 300 and / or the adapter seat 400 are pressed against each other, as well as a relative adjustment state.

[0052] The technical solution disclosed in this application optimizes the component structure and fitting method, facilitating adjustment, ensuring a smooth adjustment process, and providing stability after adjustment, thereby improving the user experience. Compared to existing technologies that use elastic elements for locking and unlocking, the locking element 300 in this application has high overall structural strength and a long service life. Furthermore, the arrangement of each component mounted on the rotating shaft 210 facilitates production and assembly. Overall, the head-wearing device in this embodiment has significant structural advantages, effective performance, and economic efficiency.

[0053] For the specific structure of the locking element 300, please refer to the appendix. Figure 2 To be continued Figure 7 In the illustrated embodiment, the sliding seat 200 has a lock hole 201 exposing the lock groove 120, and the locking member 300 has a lock tongue 320. In the locked position, the lock tongue 320 enters the lock hole 201 and engages with the corresponding lock groove 120. The lock hole 201 penetrates the side wall of the sliding seat 200 in the second direction 920. Correspondingly, the lock groove 120 is open in the second direction 920 to allow the lock tongue 320 to enter or exit. Figure 7 In this embodiment, the slide rail 110 has a T-shaped cross-section, and the locking groove 120 is located on one side edge and opens upward in the direction of gravity. The part of the sliding seat 200 that mates with the slide rail 110 has a C-shaped cross-section, and the two ends of the C-shape cover both sides of the slide rail 110. The locking hole 201 is located on one side of the C-shaped opening. When the sliding seat 200 moves on the slide rail, the locking hole 201 aligns with each locking groove 120 in sequence. In the axial direction of the rotating shaft 210, the locking tongue 320 extends from the locking member 300 toward the slide rail 110. When the locking member 300 moves in the second direction 920, the locking tongue 320 can enter or exit the locking groove 120 accordingly.

[0054] The locking element 300 is held in position by the engagement of the inner circumferential surface of the guide hole 310 with the outer circumferential surface of the guide post 220, for example, through mutual friction between the two. See also the appendix. Figure 8 In the illustrated embodiment, the sidewall of the guide hole 310 and the circumferential surface of the guide post 220 are provided with a plurality of mutually cooperating limiting protrusions 311 and a plurality of limiting grooves 221. In the figure, the limiting protrusions 311 are disposed on the locking member 300, and the limiting grooves 221 are disposed on the sliding seat 200. Multiple limiting protrusions 311 are provided and respectively disposed on opposite sides of the guide post 220, with a plurality of limiting grooves 221 corresponding to each limiting protrusion 311. The two sides of the guide post 220 are mating planes that mate with the inner edge of the guide hole 310, and the limiting protrusions 311 or limiting grooves 221 are disposed on the mating planes. When the locking member 300 moves between the locked position and the unlocked position, the limiting protrusions 311 enter or exit the corresponding limiting grooves 221. The edges of the limiting protrusions 311 and the limiting grooves 221 are smoothly transitioned, and their dimensions are matched to achieve smooth and accurate movement control of the locking member 300. Compared with the existing technology, the fit between the limiting protrusion 311 and the limiting groove 221 is located inside the guide hole 310. While effectively controlling the overall volume, it can also avoid the influence of the external environment and improve the stability of the locking component 300's movement.

[0055] In addition to motion control in the first direction 910, this application also provides motion control implementation methods in other directions. See appendix. Figure 2 To be continued Figure 6 In the illustrated embodiment, the adapter 400 and guide post 220 abut against each other along the axial direction of the rotating shaft 210, and a first circumferential limiting structure is provided between them. Further, the first circumferential limiting structure includes a first ratchet 222 and a second ratchet 410 that engage with each other. When the adjusting knob 500 enters the positioning state, causing the components to abut against each other, the first ratchet 222 and the second ratchet 410 engage, and the circumferential position of the adapter 400 relative to the guide post 220 (i.e., the sliding seat 200) is locked. When the adjusting knob 500 enters the adjusting state, the first ratchet 222 and the second ratchet 410 can rotate relative to each other under the action of an external force, and the circumferential position of the adapter 400 relative to the guide post 220 (i.e., the sliding seat 200) is released. This structure enables the aforementioned control of the face mask 600's rotation relative to the head-wearing device. To improve control of the field of vision in this direction, the face mask 600 has a non-circular adapter hole 610, through which the adapter base 400 and / or adjustment knob 500 pass. Correspondingly, the adapter base 400 and / or adjustment knob 500 have a drive side edge 420 for engaging with the inner edge of the adapter hole 610. In the figure, the drive side edge 420 is provided on the adapter base 400.

[0056] See appendix Figure 8 and attached Figure 9In the illustrated embodiment, a second circumferential limiting structure is further provided between the adapter 400 and the guide post 220. This second circumferential limiting structure includes a cooperating positioning pin 223 and a positioning groove 430. The positioning pin 223 is radially offset relative to the rotation axis 210. The positioning pin 223 is positioned either abutting against or slightly gapped relative to the outer circumferential surface of the guide post 220. The positioning pin 223 extends away from the slide rail 110 to penetrate into the positioning groove 430 of the adapter 400 and cooperates with the sidewall of the positioning groove 430. When the adapter 400 rotates relative to the guide post 220 about the rotation axis 210, the positioning pin 223 moves within the positioning groove 430. The positioning groove 430 can achieve circumferential limiting of the adapter 400 relative to the sliding seat 200 through the positioning pin 223, thereby providing control over the movement stroke. Further details are provided in the appendix. Figure 9 In the illustrated embodiment, the sidewall of the positioning groove 430 is provided with a positioning protrusion 431 located on the movement path of the positioning pin 223. The positioning protrusion 431 divides the positioning groove 430 into a first positioning segment and a second positioning segment. Under the action of external force, the positioning pin 223 can cross the positioning protrusion 431 and enter the corresponding positioning segment. The positioning protrusion 431 can provide stage control or tactile control during the movement process. For example, when the mask 600 is flipped to a certain angle, it can be held in that position to facilitate the use of the mask 600. Similarly, multiple positioning protrusions 431 can be provided.

[0057] See appendix Figure 2 To be continued Figure 7 In the illustrated embodiment, the adapter 400 is a split structure and includes a first portion 440 for engaging with an extension device and a second portion 450 for engaging with a sliding base 200 or a locking member 300. The arrangement of the first portion 440 and the second portion 450 further provides flexible installation options. For example, see attached... Figure 8 and attached Figure 9 In the first part 450, a positioning buckle 451 is provided for engaging with the rotating shaft 210. The rotating shaft 210 has a corresponding slot 211. The two engage with each other to limit the relative position of the adapter 400 and the sliding seat 200 along the axial direction of the rotating shaft 210. This arrangement allows for pre-assembly of the second part 450 of the adapter 400 and the sliding seat 200, and ensures a certain degree of meshing between the first ratchet 222 and the second ratchet 410, facilitating installation and improving the fit between components. For example, both the first part 440 and the second part 450 are rotatably mounted on the rotating shaft 210 and are provided with a mutually engaging third circumferential limiting structure. See Appendix. Figure 5 and attached Figure 6In the embodiment shown, the third circumferential limiting structure includes a circumferential locking piece 460 disposed on one of the first part 440 and the second part 450, and a plurality of positioning holes 470 disposed on the other of the two. The circumferential locking piece 460 and the positioning holes 470 are eccentrically disposed relative to the rotation axis 210. The circumferential locking piece 460 is elastically disposed and enters or exits the corresponding positioning hole 470 by its own deformation.

[0058] Based on the above, it is easy to understand that this application also discloses a welding protection device, including a face shield 600 and a flexibly adjustable head-wearing device as described in the above technical solution. The face shield 600 is provided with a non-circular adapter hole 610, through which an adapter seat 400 and / or an adjustment knob 500 pass. The specific configuration of the head-wearing device is described above. Other structures of the welding protection device can be implemented using existing technology and will not be elaborated further here.

[0059] Furthermore, this application also discloses a method for adjusting a welding protection device, implemented based on the welding protection device in the above technical solution, including:

[0060] The locking member 300 is driven into the unlocked position in the second direction 920, and the spatial position of the mask 600 relative to the restraint strap 100 is unlocked in the first direction 910.

[0061] Drive the mask 600 to move to a preset position in the first direction 910;

[0062] The locking member 300 is driven into the locking position in the second direction 920, and the spatial position of the mask 600 relative to the restraint strap 100 is locked in the first direction 910.

[0063] The specific implementation details are based on the description above and will not be repeated here.

[0064] 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.

[0065] 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 flexible adjustable headwear device, characterized in that, The application relates to a restraint belt, which comprises a restraint belt body, a sliding seat, a locking member and an adjusting knob. The restraint belt body is used for wearing on the head and is provided with sliding grooves on both sides of the head, the sliding grooves extend in a first direction and are provided with a plurality of locking grooves. The sliding seat is slidingly matched with the sliding grooves, the sliding seat is provided with a rotating shaft extending in a direction opposite to the sliding grooves and a guide column arranged around the rotating shaft. The locking member is in a ring structure and is internally provided with a long strip-shaped guide hole, the locking member can slide in a second direction and has a locking position matched with one of the locking grooves and an opposite unlocking position, the inner circumferential surface of the guide hole is matched with the outer circumferential surface of the guide column for keeping the locking member in the locking position or the unlocking position. The adjusting knob is matched with the rotating shaft, the adjusting knob has a positioning state for driving the sliding seat and / or the locking member and / or the adapter seat to abut against each other and an opposite adjusting state. The sliding seat is provided with a lock hole exposing the locking grooves, the locking member is provided with a lock tongue, in the locking position, the lock tongue enters the lock hole and is engaged with the corresponding locking groove.

2. The flexibly adjusted headgear of claim 1, wherein, The side wall of the guide hole and the circumferential surface of the guide column are provided with a plurality of limiting protrusions and a plurality of limiting grooves matched with each other, when the locking member moves between the locking position and the unlocking position, the limiting protrusions enter or exit the corresponding limiting grooves.

3. The flexibly adjusted headgear of claim 1, wherein, In the axial direction of the rotating shaft, the adapter seat and the guide column abut against each other and are provided with a first circumferential limiting structure therebetween.

4. The flexibly adjusted head worn device of claim 1, wherein, The first circumferential limiting structure comprises a first ratchet and a second ratchet matched with each other, when the adjusting knob enters the positioning state to drive the components to abut against each other, the first ratchet and the second ratchet are engaged, when the adjusting knob enters the adjusting state, the first ratchet and the second ratchet can rotate relative to each other under the action of an external force.

5. The flexibly adjusted headgear of claim 4, wherein, The adapter seat and the guide column are further provided with a second circumferential limiting structure, the second circumferential limiting structure comprises a positioning pin and a positioning groove matched with each other, the positioning pin is radially offset compared with the rotating shaft, when the adapter seat rotates relative to the guide column with the rotating shaft as the rotating shaft, the positioning pin moves in the positioning groove.

6. The flexibly adjusted head worn device of claim 1, wherein, The side wall of the positioning groove is provided with a positioning protrusion located on the movement path of the positioning pin, the positioning protrusion divides the positioning groove into a first positioning section and a second positioning section, the positioning pin can cross the positioning protrusion to enter the corresponding positioning section under the action of an external force.

7. The flexibly adjusted headgear of claim 6, wherein, The adapter seat is in a split structure and comprises a first part used for matching with the expansion device and a second part matched with the sliding seat or the locking member, the first part and the second part are both rotationally arranged on the rotating shaft and are provided with a third circumferential limiting structure matched with each other.

8. The adjustably flexible headwear device of claim 1, wherein, ​ 9. The flexibly adjusted headgear of claim 8, wherein, The third circumferential limiting structure comprises a circumferential locking piece arranged on one of the first part and the second part, and a plurality of positioning holes arranged on the other of the two parts, the circumferential locking piece and the positioning holes are arranged eccentrically relative to the rotation axis, the circumferential locking piece is elastically arranged and enters or exits the corresponding positioning hole by itself deformation.

10. Welding protection device, characterized in that The flexible adjustable head-wearing device according to any one of claims 1 to 9, wherein a face mask is further included, and a non-circular fitting hole is arranged on the face mask, the fitting seat and / or the adjusting knob penetrates through the fitting hole.

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