Smoke-proof welding mask capable of switching protective lenses in pull rod mode

Abstract

The utility model discloses a smoke-proof welding mask with a pull rod type switching protective lens. The smoke-proof welding mask comprises a welding mask body, a protective lens part, a pull rod type switching part and a smoke blowing assembly. By arranging the first lens assembly and the second lens assembly which rotate by a certain angle in a pull rod mode to achieve switching to block different light intensities at the sight line opening position, switching of the filter lenses can be selectively achieved according to the intensity of ambient light and welding light, switching is convenient, and operation is easy; the smoke blowing assembly is arranged at the lower end of the front end face of the welding mask body, air near a welding point flows in the mode that the fan blows air outwards, and the purpose of dispersing smoke near the welding point is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of welding mask technology, and in particular relates to a welding mask with a pull rod type switchable protective lens for preventing smoke and dust. Background Technology

[0002] A welding mask is a tool used to protect workers during welding and cutting operations. It consists of an observation window, a filter, a protective plate, and the mask itself. Types include handheld masks and headband masks, with headband masks available in semi-enclosed and fully enclosed versions. Welding masks effectively prevent injury from spatter and strong light during welding. Additionally, welding produces a certain amount of smoke at the welding point.

[0003] During use, welding helmets require the selection of appropriate filters based on the ambient light and welding light intensity due to variations in the welding environment, welding type, and welding current. Additionally, smoke is generated near the welding point, interfering with the welding process. Current welding helmet filters are typically not easily replaceable or cannot be replaced at all, making it difficult to minimize eye damage while observing the welding point. Furthermore, it is difficult to effectively disperse smoke near the welding point.

[0004] To address the shortcomings of existing technologies, this utility model discloses a welding mask with a pull-rod type switchable protective lens. By setting a first lens assembly and a second lens assembly that can be switched by rotating a certain angle with a pull rod to block different light intensities at the opening position of the view, the mask can selectively switch the filter lens according to the intensity of ambient light and welding light. The switching is convenient and the operation is simple. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a welding mask with a pull rod type switchable protective lens to solve the technical problems mentioned in the background art.

[0006] This utility model provides the following technical solution:

[0007] A welding mask with a pull-rod type switchable protective lens for smoke and dust protection includes a welding mask body, wherein the front end face of the welding mask body is provided with a viewing opening, and further includes:

[0008] The protective goggle component includes a first housing located at the front end of the viewing opening, a first lens assembly and a second lens assembly located inside the first housing and switched by rotating at a certain angle to block different light intensities at different positions of the viewing opening, and a transmission assembly for synchronizing the rotation of the first lens assembly and the second lens assembly.

[0009] The lever-type switching component includes a second housing located on the left side of the front end face of the first housing, a lever-type rotating component located inside the second housing that rotates the first lens assembly by engaging a gear through a lever, a lever reset component located inside the second housing for resetting the lever, and a limiting component located inside the second housing for limiting the rotation of the first lens assembly during use.

[0010] The fume blowing component, which disperses the fume at the welding position through the operation of a fan, is located on the front end surface of the welding mask body.

[0011] Preferably, the first lens assembly includes a circular first lens plate, the first lens plate being horizontally arranged in the front-to-back direction, and a plurality of first protective lenses being arranged at equal intervals along the circumference of the first lens plate, the colors of the plurality of first protective lenses gradually darkening in the counterclockwise direction, a first rotating shaft being coaxially arranged in the middle of the first lens plate, and the rear end of the first rotating shaft being connected to the front end face of the welding mask body through a bearing.

[0012] Preferably, the second lens assembly includes a circular second lens plate, which is horizontally arranged in the front-to-back direction. A plurality of second protective lenses are arranged at equal intervals along the circumference of the second lens plate. The color of the plurality of second protective lenses gradually deepens in the counterclockwise direction, and the first protective lens and the second protective lens located at the two viewing openings have the same color depth. A second fixed shaft is coaxially arranged in the middle of the second lens plate through a bearing. The front and rear ends of the second fixed shaft are respectively connected to the inner side of the first housing and the front end of the welding mask body.

[0013] Preferably, the outer diameters of the first lens plate and the second lens plate are the same, and the number of the first protective lens and the second protective lens are the same.

[0014] Preferably, the transmission assembly includes a first driving external gear coaxially disposed on the outer ring of the first lens plate and a first driven external gear coaxially disposed on the outer ring of the second lens plate. The first driving external gear and the first driven external gear are connected by a first transmission gear. A third fixed shaft is coaxially disposed in the middle of the first transmission gear through a bearing. The front and rear ends of the third fixed shaft are respectively connected to the inner side of the first housing and the front end of the welding mask body.

[0015] Preferably, the lever-type rotating assembly includes a fourth rotating shaft. The first rotating shaft is horizontally arranged in the front-to-back direction. The front and rear ends of the fourth rotating shaft are respectively connected to the inner side of the second housing and the front side of the first housing through bearings. A second driving gear is coaxially arranged on the fourth rotating shaft. The front end of the first rotating shaft extends forward into the interior of the second housing, and a second driven gear that meshes with the second driving gear is coaxially arranged on the front end of the first rotating shaft. A lever is also arranged perpendicular to the axial direction of the front end of the fourth rotating shaft. A rectangular opening for the lever to pass through is provided on the left side of the second housing.

[0016] Preferably, the pull rod reset assembly includes a one-way bearing and a first reset spring. The inner ring of the one-way bearing is coaxially disposed on the fourth rotating shaft, the outer ring of the one-way bearing is connected to the inner ring of the second drive gear, the upper end of the first reset spring is connected to the upper inner end of the second housing, and the lower end of the first reset spring is connected to the pull rod.

[0017] Preferably, the limiting component includes a limiting seat disposed inside the second housing. The limiting seat has a first circular opening for the first rotating shaft to pass through. The limiting seat has a limiting cavity inside, the length directions of which intersect and are perpendicular to the axial direction of the first circular opening. A limiting ball is disposed inside the limiting cavity. A second circular opening communicating with the first circular opening is disposed at one end of the limiting cavity near the first circular opening. A second return spring is disposed between the end of the limiting ball away from the second circular opening and the limiting cavity. The first rotating shaft is provided with a plurality of limiting grooves that cooperate with the limiting ball at the position of the first circular opening. The plurality of limiting grooves are arranged sequentially at equal intervals along the circumference of the first rotating shaft.

[0018] Preferably, the fume blowing assembly includes a third housing, which is located below the second housing on the front end face of the welding mask body. An air blower is installed inside the third housing to blow air forward. The air blower is connected to the third housing via a support frame. An air outlet is provided on the front end face of the third housing, and a first protective net is provided at the air outlet position. Air inlets are provided on the left and right sides and the lower end face of the third housing near the welding mask body, and a second protective net is provided at the air inlet position.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides a welding mask with a pull rod type of switchable protective lens. By setting a first lens assembly and a second lens assembly that can be switched by rotating a certain angle in the manner of a pull rod to block the light intensity of the opening position of the view, the filter lens can be selectively switched according to the ambient light and the intensity of the welding light. The switching is convenient and the operation is simple.

[0021] (2) The present invention provides a welding mask with a pull rod type switchable protective lens. By setting a smoke blowing component at the lower end of the front face of the welding mask body, the air near the welding point is made to flow by blowing air outward by a fan, so as to disperse the smoke near the welding point. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of the welding mask of this utility model.

[0024] Figure 2 This is a schematic diagram of the protective goggle component of this utility model.

[0025] Figure 3 This is a schematic diagram of the transmission component structure of this utility model.

[0026] Figure 4 This utility model Figure 2 A magnified view of part A.

[0027] Figure 5 This utility model Figure 2 A magnified view of part B.

[0028] Figure 6 This is a schematic diagram of the pull rod reset assembly of this utility model.

[0029] Figure 7 This is a schematic diagram of the limiting component structure of this utility model.

[0030] Figure 8 This is a schematic diagram of the smoke and dust blowing component of this utility model. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] This utility model discloses a welding mask with a pull-rod type switchable protective lens for smoke and dust protection, see reference. Figure 1 and Figure 2 The system includes a welding mask body 1, wherein the front end face of the welding mask body 1 is provided with a viewing opening 2, and further includes:

[0034] The protective goggle component includes a first housing 3 located at the front end of the viewing opening 2, a first lens assembly 4 and a second lens assembly 5 located inside the first housing 3, which can be switched by rotating at a certain angle to block different light intensities at the viewing opening position, and a transmission component for synchronously rotating the first lens assembly 4 and the second lens assembly 5. The welding mask body 1 is one of a headband-style half-mask or a full-mask (helmet-style). It is equipped with a first lens assembly and a second lens assembly that can be switched by rotating at a certain angle by a lever to block different light intensities at the viewing opening position. It can selectively switch the filter lens according to the intensity of ambient light and welding light, which is convenient and simple to operate.

[0035] A first transparent protective glass is disposed within the viewing opening 2. A second viewing opening 12 is disposed on the front end face of the first housing 3. The second viewing opening 12 is located directly in front of the viewing opening 2, and the size of the second viewing opening 12 is not smaller than the size of the viewing opening 2. A second transparent protective glass is disposed within the second viewing opening 12. The arrangement of the first and second transparent protective glass forms a sealed cavity inside the first housing, preventing external dust, smoke, etc., from entering the interior of the first housing. This achieves protection and dustproofing for both the first and second lens assemblies.

[0036] Furthermore, as a specific implementation method, refer to Figure 3The first lens assembly 4 includes a circular first lens plate 41, which is horizontally arranged in the front-to-back direction. A plurality of first protective lenses 42 are arranged at equal intervals along the circumference of the first lens plate 41. The color of the first protective lenses 42 gradually darkens in a counter-clockwise direction. A first rotating shaft 43 is coaxially arranged in the middle of the first lens plate 41, and the rear end of the first rotating shaft 43 is connected to the front end face of the welding mask body 1 via a bearing. Six first protective lenses 42 are provided, and the first lens plate 41 rotates 60 degrees each time.

[0037] Furthermore, as a specific implementation method, refer to Figure 3 The second lens assembly 5 includes a circular second lens plate 51, which is horizontally arranged in the front-to-back direction. A plurality of second protective lenses 52 are arranged at equal intervals along the circumference of the second lens plate 51. The color of the second protective lenses 52 gradually deepens in a counter-clockwise direction, and the first protective lenses 42 and second protective lenses 52 located at the two viewing openings 2 have the same color depth. A second fixed shaft 53 is coaxially arranged in the middle of the second lens plate 51 via a bearing. The front and rear ends of the second fixed shaft 53 are respectively connected to the inner side of the first housing 3 and the front end of the welded mask body 1. Six second protective lenses 52 are also provided. The second lens plate 51 rotates 60 degrees with the first lens plate 41 each time.

[0038] The first lens plate 41 and the second lens plate 51 have the same outer diameter, and the first protective lens 42 and the second protective lens 52 have the same number.

[0039] Furthermore, as a specific implementation method, refer to Figure 2 and Figure 4 The transmission assembly includes a first driving external gear 61 coaxially disposed on the outer ring of the first lens plate 41 and a first driven external gear 63 coaxially disposed on the outer ring of the second lens plate 51. The first driving external gear 61 and the first driven external gear 63 are connected by a first transmission gear 62. A third fixed shaft 64 is coaxially disposed on the middle part of the first transmission gear 62 through a bearing. The front and rear ends of the third fixed shaft 64 are respectively connected to the inner side of the first housing 3 and the front end of the welded mask body 1. When the first driving external gear 61 rotates, it can drive the first transmission gear 62 meshing with it to rotate, thereby causing the first driven external gear 63 meshing with the first transmission gear 62 to rotate, and the first driving external gear 61 and the first transmission gear 62 rotate synchronously.

[0040] It also includes a lever-type switching component, comprising a second housing 7 located on the left side of the front end face of the first housing 3, a lever-type rotating component located inside the second housing that rotates the first lens assembly 4 by engaging a gear through a lever, a lever reset component located inside the second housing for resetting the lever, and a limiting component 10 located inside the second housing for limiting the rotation of the first lens assembly 4 during use.

[0041] Furthermore, as a specific implementation method, refer to Figure 2 and Figure 5 The lever-type rotating assembly includes a fourth rotating shaft 81. The first rotating shaft 81 is horizontally arranged in the front-to-back direction. The front and rear ends of the fourth rotating shaft are respectively connected to the inner side of the second housing 7 and the front side of the first housing 3 via bearings. A second driving gear 82 is coaxially arranged on the fourth rotating shaft 81. The front end of the first rotating shaft 43 extends forward into the interior of the second housing 7, and a second driven gear 83 meshing with the second driving gear is coaxially arranged at the front end of the first rotating shaft 43. A lever 84 is also arranged perpendicular to the axial direction at the front end of the fourth rotating shaft 81. A rectangular opening 85 for the lever to pass through is provided on the left side of the second housing 7. The length direction of the rectangular opening 85 is vertically arranged in the up-down direction, and when the lever 84 moves from the upper end of the rectangular opening 85 to the lower end of the rectangular opening 85, the fourth rotating shaft 81 rotates 60 degrees.

[0042] Furthermore, as a specific implementation method, refer to Figure 5 and Figure 6 The pull rod reset assembly includes a one-way bearing 91 and a first reset spring 92. The inner ring of the one-way bearing 91 is coaxially mounted on the fourth rotating shaft 81, and the outer ring of the one-way bearing 91 is connected to the inner ring of the second drive gear 82. The upper end of the first reset spring 92 is connected to the upper inner end of the second housing 7, and the lower end of the first reset spring is connected to the pull rod 84. When the pull rod 84 is pushed downwards, the one-way bearing 91 does not rotate. At this time, the first reset spring 92 is stretched, and the fourth rotating shaft 81 and the second drive gear 82 can rotate 60 degrees as the pull rod 84 is pushed downwards. This, in turn, drives the first rotating shaft 43 to rotate 60 degrees clockwise, which in turn drives the first lens plate 41 and the second lens plate 51 to rotate 60 degrees clockwise, switching to the next lens. When the switch is completed and the lever 84 is released, the lever 84 moves upward due to the reset of the first return spring 92. At this time, the one-way bearing 91 rotates, which causes the fourth rotating shaft 81 to rotate upward by 60 degrees along with the lever 84. However, due to the rotation of the one-way bearing 91 and the effect of the limiting component, the first rotating shaft 43 does not rotate.

[0043] Furthermore, as a specific implementation method, refer to Figure 5 and Figure 7 The limiting component 10 includes a limiting seat 101 disposed inside the second housing. The limiting seat 101 has a first circular opening for the first rotating shaft 43 to pass through. A limiting cavity 102 is disposed inside the limiting seat 101. The length directions of the limiting cavity intersect and are perpendicular to the axial direction of the first circular opening. A limiting ball 103 is disposed inside the limiting cavity. A second circular opening communicating with the first circular opening is disposed at one end of the limiting cavity near the first circular opening. A second return spring 104 is disposed between the end of the limiting ball away from the second circular opening and the limiting cavity. The first rotating shaft 43, located at the position of the first circular opening, has a plurality of limiting grooves 105 that cooperate with the limiting balls. The plurality of limiting grooves 105 are arranged sequentially at equal intervals along the circumference of the first rotating shaft 43. There are two limiting grooves 105, and the central angle between adjacent limiting grooves 105 is 60 degrees. There are two, four, or six limiting components 10, and several limiting components 10 are arranged at equal intervals along the axial direction of the first rotating shaft 43. When the first rotating shaft 43 rotates, the limiting groove 105 presses against the limiting ball 103 and the second return spring 104. When the first rotating shaft 43 does not rotate, the limiting ball 103 is partially located inside the limiting groove 105 to limit the first rotating shaft 43 and prevent the first rotating shaft 43 from rotating when the lever is not manually moved.

[0044] Furthermore, as a specific implementation method, refer to Figure 1 and Figure 8 The system also includes a fume blowing assembly 11, which disperses fumes at the welding position via a fan. This assembly is located on the front end face of the welding mask body 1. The fume blowing assembly 11 includes a third housing 111, positioned below the second housing on the front end face of the welding mask body 1. Inside the third housing 111 is a forward-blowing fan 112, connected to the third housing via a support frame 115. The front end face of the third housing 111 has an air outlet with a first protective mesh 113. The left and right sides and the lower end face of the third housing 111 near the welding mask body 1 each have an air inlet with a second protective mesh 114. The upper end face of the welding mask body 1 has a battery for powering the fan, a solar panel for charging the battery, and a charging port. The fan's operation blows air outwards, creating airflow near the welding point and dispersing the fumes.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding mask with a pull-rod type switchable protective lens, comprising a welding mask body (1), wherein the front end face of the welding mask body (1) is provided with a viewing opening (2), characterized in that: Also includes: The protective goggle component includes a first housing (3) located at the front end of the viewing opening (2), a first lens assembly (4) and a second lens assembly (5) located inside the first housing (3) and switched by rotating at a certain angle to block different light intensities at the viewing opening position, and a transmission assembly for synchronizing the rotation of the first lens assembly (4) and the second lens assembly (5). The lever-type switching component includes a second housing (7) located on the left side of the front end face of the first housing (3), a lever-type rotating component located inside the second housing that rotates the first lens assembly (4) by engaging gears through lever engagement, a lever reset component located inside the second housing for resetting the lever, and a limiting component (10) located inside the second housing for limiting the rotation of the first lens assembly (4) during use. The fume blowing component (11) disperses the fume at the welding position by working a fan and is located on the front end surface of the welding mask body (1).

2. The anti-smoke welding mask with a pull-rod type switchable protective lens according to claim 1, characterized in that, The first lens assembly (4) includes a circular first lens plate (41). The first lens plate (41) is horizontally arranged in the front-back direction. A plurality of first protective lenses (42) are arranged at equal intervals along the circumference of the first lens plate (41). The color of the plurality of first protective lenses (42) gradually darkens in the counterclockwise direction. A first rotating shaft (43) is coaxially arranged in the middle of the first lens plate (41). The rear end of the first rotating shaft (43) is connected to the front end face of the welding mask body (1) through a bearing.

3. The welding mask with a pull-rod type switchable protective lens according to claim 2, characterized in that, The second lens assembly (5) includes a circular second lens plate (51). The second lens plate (51) is horizontally arranged in the front-back direction. A plurality of second protective lenses (52) are arranged at equal intervals along the circumference of the second lens plate (51). The color of the plurality of second protective lenses (52) gradually deepens in the counterclockwise direction. The color depth of the first protective lens (42) and the second protective lens (52) located at the two viewing openings (2) is the same. A second fixed shaft (53) is coaxially arranged in the middle of the second lens plate (51) through a bearing. The front and rear ends of the second fixed shaft are respectively connected to the inner side of the first housing (3) and the front end of the welding mask body (1).

4. The anti-smoke and dust welding mask with a pull-rod type switchable protective lens according to claim 3, characterized in that, The transmission assembly includes a first driving external gear (61) coaxially disposed on the outer ring of the first lens plate (41) and a first driven external gear (63) coaxially disposed on the outer ring of the second lens plate (51). The first driving external gear (61) and the first driven external gear (63) are connected by a first transmission gear (62). A third fixed shaft (64) is coaxially disposed in the middle of the first transmission gear (62) through a bearing. The front and rear ends of the third fixed shaft (64) are respectively connected to the inner side of the first housing (3) and the front end of the welded mask body (1).

5. The anti-smoke welding mask with a pull-rod type switchable protective lens according to claim 4, characterized in that, The lever-type rotating assembly includes a fourth rotating shaft (81). The first rotating shaft is horizontally arranged in the front-to-back direction. The front and rear ends of the fourth rotating shaft are respectively connected to the inner side of the second housing (7) and the front side of the first housing (3) through bearings. A second driving gear (82) is coaxially arranged on the fourth rotating shaft (81). The front end of the first rotating shaft (43) extends forward into the interior of the second housing (7). A second driven gear (83) meshing with the second driving gear is coaxially arranged on the front end of the first rotating shaft (43). A lever (84) is also arranged at the front end of the fourth rotating shaft (81) perpendicular to its axial direction. A rectangular opening (85) for the lever to pass through is provided on the left side of the second housing (7).

6. The welding mask with a pull-rod type switchable protective lens according to claim 5, characterized in that, The pull rod reset assembly includes a one-way bearing (91) and a first reset spring (92). The inner ring of the one-way bearing (91) is coaxially disposed on the fourth rotating shaft (81). The outer ring of the one-way bearing (91) is connected to the inner ring of the second drive gear (82). The upper end of the first reset spring (92) is connected to the upper inner end of the second housing (7). The lower end of the first reset spring is connected to the pull rod (84).

7. The anti-smoke welding mask with a pull-rod type switchable protective lens according to claim 6, characterized in that, The limiting component (10) includes a limiting seat (101) disposed inside the second housing. The limiting seat (101) is provided with a first circular opening for the first rotating shaft (43) to pass through. The limiting seat (101) is provided with a limiting cavity (102) inside. The length directions of the limiting cavity intersect and are arranged perpendicular to the axial direction of the first circular opening. A limiting ball (103) is provided inside the limiting cavity. A second circular opening communicating with the first circular opening is provided at one end of the limiting cavity near the first circular opening. A second return spring (104) is provided between the end of the limiting ball away from the second circular opening and the limiting cavity. The first rotating shaft (43) is provided with a plurality of limiting grooves (105) that cooperate with the limiting ball at the position of the first circular opening. The plurality of limiting grooves (105) are arranged sequentially at equal intervals along the circumference of the first rotating shaft (43).

Images