Welding mask with adjustable inlet air

Abstract

The utility model relates to the field of welding masks, and discloses an air inlet adjustable welding mask which comprises a bandage, the rear surface of the bandage is fixedly connected with a protective cover, the front surface of the protective cover is fixedly connected with an adjusting bin, the front surface of the adjusting bin is provided with air holes, the front surface of the adjusting bin penetrates through and is fixedly connected with an air inlet pipe, and the air inlet pipe is fixedly connected with an air outlet pipe. A fixing assembly is arranged on the upper surface of the bandage, an air inlet adjusting mechanism is arranged in the adjusting bin, and the air inlet adjusting mechanism comprises an adjusting assembly and a limiting assembly. According to the device, the position of the adjusting plate can be changed by controlling the adjusting rod through cooperation of the air inlet adjusting mechanism, then the size of the through groove can be flexibly changed, adjustment of the air inlet amount is achieved, after adjustment is completed, the acting force of the compression spring can push the limiting block and the limiting groove to be connected in an inserted mode to maintain stability of the device, and it is ensured that the air inlet amount is stable; and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of welding masks, in particular to a welding mask with adjustable air inlet. Background Art

[0002] Welding is a common process used in many industrial sectors, including manufacturing, construction, automotive, and aerospace. While the welding process effectively joins metal materials, the fumes, gases, and heat generated during the process pose a serious threat to the health and safety of operators. Therefore, welders need to wear welding masks to protect their eyes and face from these hazardous factors during the welding process.

[0003] However, wearing a welding mask often makes one feel stuffy and has poor air permeability, so fresh air is often supplied by connecting a respirator to the mask. However, the air intake size of this method is usually fixed and cannot be adjusted according to the needs of different wearers, making it difficult to meet individual comfort and safety in various working environments.

[0004] After searching, Chinese patent announcement number: CN221357396U discloses a welding helmet with adjustable air inlet, comprising a mask body, the mask body including a ventilation part, the ventilation part is provided with a ventilation space, the ventilation part is provided with an air supply pipe, the ventilation part is provided with air holes on the side facing the wearer, the ventilation space is provided with an adjustment port, the ventilation space is provided with an adjustment mechanism, the adjustment mechanism includes an adjustment plate, the adjustment plate is provided at the position of the adjustment port for adjusting the size of the adjustment port. When in use, air is supplied to the ventilation space through the air supply pipe, the adjustment port serves as an air intake, and fresh air is supplied to the wearer through the air holes. When adjusting the size, the size of the adjustment port can be controlled by the adjustment plate on the adjustment mechanism to achieve the size of the air supply. In this way, adjustment can be made directly on the welding helmet.

[0005] Although the device has certain improvements and the size of the adjustment port can be flexibly changed by toggling the sliding plate, thereby changing the air intake size, the device is not provided with a corresponding limiting device, which makes it impossible to keep the position of the sliding plate fixed, and the stability of the device during use is poor. Therefore, a welding mask with adjustable air intake is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the above shortcomings, the utility model provides a welding mask with adjustable air inlet, which aims to improve the problem in the prior art that after the air inlet size is adjusted, it cannot be kept fixed and has poor stability.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a welding mask with adjustable air inlet, comprising a strap, the rear surface of the strap is fixedly connected to a protective cover, the front surface of the protective cover is fixedly connected to an adjusting chamber, the front surface of the adjusting chamber is provided with an air vent, the front surface of the adjusting chamber passes through and is fixedly connected to an air inlet pipe, the upper surface of the strap is provided with a fixing component, the interior of the adjusting chamber is provided with an air inlet adjusting mechanism, the air inlet adjusting mechanism comprises an adjusting component and a limiting component, the adjusting component comprises a partition, the front surface of the partition is provided with a through groove, the inner wall of the top of the through groove is fixedly connected to a wind shield, the inner wall of the through groove is rotatably connected to an adjusting plate, the rear surface of the adjusting plate is fixedly connected to a hollow tube, and the inner wall of the hollow tube is elastically connected to an adjusting rod via a compression spring.

[0008] As a further description of the above technical solution:

[0009] The limiting assembly includes a fixing block, a limiting groove is provided on the inner wall of the front side of the fixing block, and the outer wall of the adjusting rod is fixedly connected to the limiting block.

[0010] As a further description of the above technical solution:

[0011] The fixing assembly includes a fixing belt 1, a fixing belt 2 is fixedly connected to the upper surface of the strap, a positioning block is fixedly connected to the left surface of the fixing belt 2, a clamping block is fixedly connected to the right end of the upper surface of the fixing belt 1, and a clamping slot is opened on the upper surface of the fixing belt 2.

[0012] As a further description of the above technical solution:

[0013] The partition is fixedly connected to the inner wall of the adjustment chamber, the rear surface of the adjustment plate is in contact with the front surface of the windshield, and the front surface of the adjustment rod is configured as a hand wheel.

[0014] As a further description of the above technical solution:

[0015] One end of the compression spring is fixedly connected to the inner wall of the rear side of the hollow tube, and the other end of the compression spring is fixedly connected to the rear surface of the adjustment rod. The adjustment rod passes through and is slidably connected to the front surface of the hollow tube, and the air intake pipe passes through and is fixedly connected to the front surface of the partition.

[0016] As a further description of the above technical solution:

[0017] The fixing block passes through and is fixedly connected to the front surface of the regulating chamber, and the hollow tube passes through and is rotatably connected to the rear surface of the fixing block.

[0018] As a further description of the above technical solution:

[0019] The limiting block is configured to be gear-shaped, the limiting groove is configured to be gear-shaped, the limiting block is plugged into the inner wall of the limiting groove, and the adjusting rod passes through the front surface of the fixing block.

[0020] As a further description of the above technical solution:

[0021] The lower surface of the fixing belt 1 is fixedly connected to the upper surface of the binding belt, a notch is provided on the upper surface of the positioning block, and the clamping block is inserted into the inner wall of the clamping slot.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, through the cooperation of the air inlet adjustment mechanism, the position of the adjustment plate can be changed by manipulating the adjustment rod, and the size of the through slot can be flexibly changed to adjust the air inlet size. After the adjustment is completed, the force of the compression spring will push the limit block and the limit slot to maintain the stability of the device, thereby ensuring the stability of the air inlet size and improving the practicality of the device.

[0024] 2. In the present invention, by cooperating with the fixing components and plugging the card blocks into the card slots at different positions, the total length of the fixing belt 1 and the fixing belt 2 can be changed, thereby enabling the fixing belt 1 and the fixing belt 2 to be tied to the top of the head of people with different head circumferences, thereby enhancing the stability of the device and reducing the probability of loosening and slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic front view of the three-dimensional structure of the overall device of the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the air intake pipe, partition, and adjustment chamber in the present invention;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the air intake pipe, partition, and adjustment chamber in the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the hollow core tube, the adjusting rod, and the fixing block of the utility model;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixing belt 1 and the fixing belt 2 in the present invention.

[0030] Legend:

[0031] 1. Binding strap; 2. Protective cover; 3. Adjustment chamber; 301. Air vent; 4. Inlet pipe; 51. Partition; 52. Wind shield; 53. Adjustment plate; 54. Hollow tube; 55. Adjustment rod; 56. Compression spring; 501. Through slot; 61. Fixing block; 62. Limiting block; 601. Limiting slot; 71. Fixing strap 1; 72. Fixing strap 2; 73. Positioning block; 74. Clamping block; 701. Clamping slot. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1 - Figure 2 The utility model provides an embodiment of a welding helmet with adjustable air inlet, comprising a strap 1. The strap 1 is made of a flexible material and has a certain degree of deformation ability. An adjustment knob is provided in the middle section of the front end of the strap 1. The adjustment knob is prior art and can be implemented by technicians in this field. Since it is prior art, it will not be described in detail in this case. The adjustment knob can adjust the length of the strap 1 to suit the head circumference of different users. A protective cover 2 is fixedly connected to the rear surface of the strap 1. The protective cover 2 can provide protection for the user's face. When in use, in order to protect the user's head and neck, a cloth cover may be used to wrap it. An adjustment chamber 3 is fixedly connected to the front surface of the protective cover 2. The front surface of the adjustment chamber 3 is provided with air vents 301 for air circulation. An air inlet pipe 4 is passed through and fixedly connected to the front surface of the adjustment chamber 3. After being wrapped with the cloth cover, air can enter through the air inlet pipe 4, ensuring smooth air circulation, achieving a heat dissipation effect, and reducing the user's discomfort during welding. A fixing component is provided on the upper surface of the strap 1, and an air inlet adjustment mechanism is provided inside the adjustment chamber 3.

[0034] Reference Figure 2 - Figure 4The air inlet adjustment mechanism includes an adjustment component and a limit component. The adjustment component includes a partition 51. A through slot 501 is provided on the front surface of the partition 51. There are multiple groups of through slots 501 distributed on the front surface of the partition 51. Air can flow through the through slots 501. The inner wall of the top of the through slot 501 is fixedly connected with a windshield 52. The inner wall of the through slot 501 is rotatably connected with an adjustment plate 53. The windshield 52 and the adjustment plate 53 can block the through slot 501. By changing the adjustment plate 5 3, the ventilation area can be changed. The rear surface of the adjusting plate 53 is fixedly connected to a hollow tube 54. The inner wall of the hollow tube 54 is elastically connected to the adjusting rod 55 through a compression spring 56. The limiting assembly includes a fixed block 61. The inner wall of the front side of the fixed block 61 is provided with a limiting groove 601. The outer wall of the adjusting rod 55 is fixedly connected to the limiting block 62. The limiting groove 601 and the limiting block 62 are matched. The fixed block 61, the adjusting rod 55, the hollow tube 54 and the limiting block 62 are concentric.

[0035] Reference Figure 1 、 Figure 5 The fixing component includes a fixing belt 71, and the upper surface of the strap 1 is fixedly connected to a fixing belt 2 72. Both the fixing belt 1 71 and the fixing belt 2 72 are made of flexible materials and have a certain deformation ability. The fixing belt 1 71 and the fixing belt 2 72 can be tied to the top of the user's head to play a reinforcement role. The left surface of the fixing belt 2 72 is fixedly connected to a positioning block 73, and the right end of the upper surface of the fixing belt 1 71 is fixedly connected to a card block 74. The upper surface of the fixing belt 2 72 is provided with a card slot 701, and the top of the card block 74 is slightly larger than the card slot 701, and the top of the card block 74 is made of rubber material and has a certain deformation ability. When the card block 74 and the card slot 701 are plugged in, they will remain stable due to friction.

[0036] Reference Figure 2 - Figure 4The partition 51 is fixedly connected to the inner wall of the regulating chamber 3, and the interior of the regulating chamber 3 can be divided into two independent spaces. The rear surface of the regulating plate 53 and the front surface of the windshield 52 are in contact with each other to maintain a seal. The front surface of the regulating rod 55 is set in the shape of a hand wheel for easy grasping. There is an arrow on the top of the hand wheel. By observing the position of the arrow, the rotation angle of the regulating plate 53 can be judged. One end of the compression spring 56 is fixedly connected to the inner wall of the rear side of the hollow tube 54, and the other end of the compression spring 56 is fixedly connected to the rear surface of the regulating rod 55. The regulating rod 55 passes through and is slidably connected to the hollow tube 5 4, when the adjusting rod 55 moves backward, it squeezes the compression spring 56 to generate a reaction force, the intake pipe 4 passes through and is fixedly connected to the front surface of the partition 51, the intake pipe 4 cannot discharge the air directly on the front side of the partition 51, the fixed block 61 passes through and is fixedly connected to the front surface of the adjusting chamber 3, the hollow tube 54 passes through and is rotatably connected to the rear surface of the fixed block 61, the limit block 62 is set to a gear shape, and the limit groove 601 is opened in a gear shape. The limit block 62 is inserted into the inner wall of the limit groove 601, which can limit the hollow tube 54, and the adjusting rod 55 passes through the front surface of the fixed block 61.

[0037] Reference Figure 1 、 Figure 5 The lower surface of the fixing strap 1 71 is fixedly connected to the upper surface of the strap 1, a notch is provided on the upper surface of the positioning block 73, and the card block 74 is inserted into the inner wall of the card slot 701, which can fix the fixing strap 1 71 and the fixing strap 2 72 together. There are multiple groups of card slots 701. By inserting the card block 74 into the card slots 701 at different positions, the total length of the fixing strap 1 71 and the fixing strap 2 72 can be adjusted to adapt to users with different head circumferences.

[0038] The limit block 62 moving forward will be plugged into the limit slot 601 to limit the adjusting rod 55, hollow tube 54 and adjusting plate 53, ensuring that the size of the opening of the through slot 501 remains stable, thereby ensuring the stability of the device during use.

[0039] Then put the strap 1 on the user's head, and then turn the adjustment knob to tighten the strap 1 so that the strap 1 is fixed on the user's head, then pass the fixing belt 1 71 through the positioning block 73 and tighten the fixing belt 1 71 and the fixing belt 2 72 to fit the top of the user's head, and then plug the card block 74 and the card slot 701 to limit the fixing belt 1 71 and the fixing belt 2 72. At this time, the fixing belt 1 71 and the fixing belt 2 72 will be tied to the top of the user's head, which plays a reinforcing role and can prevent the device from loosening when used.

[0040] After use, the card block 74 is pulled out from the card slot 701, and the fixing belt 71 is pulled out from the positioning block 73. Finally, the adjustment knob is rotated in the opposite direction to loosen the strap 1 and remove the device from the user's head.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A welding helmet with adjustable air inlet, comprising a strap (1), characterized in that: The rear surface of the strap (1) is fixedly connected to a protective cover (2), the front surface of the protective cover (2) is fixedly connected to an adjustment chamber (3), the front surface of the adjustment chamber (3) is provided with an air vent (301), the front surface of the adjustment chamber (3) is penetrated by and fixedly connected to an air intake pipe (4), the upper surface of the strap (1) is provided with a fixing component, an air intake adjustment mechanism is provided inside the adjustment chamber (3), the air intake adjustment mechanism includes an adjustment component and a limit component, the adjustment component includes a partition (51), the front surface of the partition (51) is provided with a through slot (501), the inner wall of the top end of the through slot (501) is fixedly connected to a windshield (52), the inner wall of the through slot (501) is rotatably connected to an adjustment plate (53), the rear surface of the adjustment plate (53) is fixedly connected to a hollow tube (54), the inner wall of the hollow tube (54) is elastically connected to an adjustment rod (55) through a compression spring (56).

2. The welding helmet with adjustable air inlet according to claim 1, characterized in that: The limiting assembly comprises a fixed block (61), a limiting groove (601) is provided on the inner wall of the front side of the fixed block (61), and the outer wall of the regulating rod (55) is fixedly connected to the limiting block (62).

3. The welding helmet with adjustable air inlet according to claim 1, characterized in that: The fixing assembly comprises a fixing belt 1 (71), a fixing belt 2 (72) is fixedly connected to the upper surface of the strap (1), a positioning block (73) is fixedly connected to the left surface of the fixing belt 2 (72), a clamping block (74) is fixedly connected to the right end of the upper surface of the fixing belt 1 (71), and a clamping slot (701) is provided on the upper surface of the fixing belt 2 (72).

4. The welding helmet with adjustable air inlet according to claim 1, characterized in that: The partition (51) is fixedly connected to the inner wall of the regulating chamber (3), the rear surface of the regulating plate (53) is in contact with the front surface of the windshield (52), and the front surface of the regulating rod (55) is configured in the shape of a hand wheel.

5. The welding helmet with adjustable air inlet according to claim 1, characterized in that: One end of the compression spring (56) is fixedly connected to the inner wall of the rear side of the hollow tube (54), and the other end of the compression spring (56) is fixedly connected to the rear surface of the adjustment rod (55). The adjustment rod (55) passes through and is slidably connected to the front surface of the hollow tube (54). The air intake pipe (4) passes through and is fixedly connected to the front surface of the partition (51).

6. The welding helmet with adjustable air inlet according to claim 2, characterized in that: The fixing block (61) passes through and is fixedly connected to the front surface of the regulating chamber (3), and the hollow tube (54) passes through and is rotatably connected to the rear surface of the fixing block (61).

7. The welding helmet with adjustable air inlet according to claim 2, characterized in that: The limiting block (62) is configured in a gear shape, the limiting groove (601) is provided in a gear shape, the limiting block (62) is plugged into the inner wall of the limiting groove (601), and the adjusting rod (55) passes through the front surface of the fixing block (61).

8. The welding helmet with adjustable air inlet according to claim 3, characterized in that: The lower surface of the fixing belt (71) is fixedly connected to the upper surface of the binding belt (1), a notch is provided on the upper surface of the positioning block (73), and the clamping block (74) is inserted into the inner wall of the clamping slot (701).

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