Protective helmet for welding

Abstract

The utility model discloses a protective helmet for welding, which comprises a helmet main body and a filter, a fixing mechanism is arranged inside the helmet main body, the fixing mechanism comprises two groups of fixing plates, the fixing plates are fixedly connected inside the helmet main body, the fixing plates are fixedly connected on the fixing plates, and the filter is fixedly connected on the fixing plates. The fixing plate is fixedly connected with two groups of first springs, the bottom ends of the first springs are fixedly connected with clamping blocks, the clamping blocks are fixedly connected with the top end of a filter, the bottom end of the filter is fixedly connected with fixing blocks, the fixing blocks are inserted into grooves, the grooves are formed in the top end of the bottom plate, and the bottom end of the bottom plate is fixedly connected with the fixing blocks. By means of the structural design of the fixing mechanism, the filter can be opened by pushing the filter upwards only by pulling a pull ring firstly to remove clamping of an inserting column and the fixing block, the face of a wearer can be exposed, and discomfort caused by long-time work can be relieved.

Description

Technical Field

[0001] The utility model relates to the field of welding protective equipment, in particular to a welding protective helmet. Background Art

[0002] Strong light will be generated during the welding process. In order to protect the user's eyes, a protective helmet will be worn during welding. The protective helmet can automatically adjust the brightness of the filter according to the light intensity during the welding process, which is more intelligent.

[0003] According to the patent document: CN202010352666.9, a digital modular welding protective helmet is proposed, including: a helmet body, a transparent liquid crystal display screen, a control circuit board, an interface control circuit board, a communication circuit and an additional function device are provided on the helmet body; the communication circuit is connected to the interface control circuit board, and the communication circuit receives the real-time parameters of the welding machine; the interface control circuit board is respectively connected to the control circuit board and the additional function device; the transparent liquid crystal display screen is connected to the control circuit board to display the real-time parameters of the welding machine; the additional function device is respectively connected to the control circuit board and the interface control circuit board, and the control circuit board controls the opening or closing of the additional function device. The present invention displays the real-time parameters of the welding machine on the transparent liquid crystal display screen provided on the helmet body, so that the operator can monitor the real-time parameters of the welding machine at any time during work, and the additional function device is provided on the helmet body, thereby improving the welding quality and welding efficiency.

[0004] However, in the digital modular welding protective helmet of the above technology, the transparent LCD display is connected to the helmet body, and the interior of the helmet is relatively closed. The hot air exhaled by the wearer is difficult to circulate normally with the outside air. After working for a long time, it is inevitable that the wearer will feel uncomfortable. Utility Model Content

[0005] The purpose of the utility model is to provide a welding protective helmet to solve the problem that a digital modular welding protective helmet in the above-mentioned technology proposed in the above-mentioned background technology, a transparent liquid crystal display screen is connected to the helmet body, the interior of the helmet is relatively closed, and the hot air exhaled by the wearer is difficult to circulate normally with the outside air. After working for a long time, it is inevitable that the wearer will cause discomfort.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective helmet for welding, comprising a helmet body and a filter, a fixing mechanism is arranged inside the helmet body, the fixing mechanism comprises two groups of fixing plates, the fixing plate is fixedly connected to the inside of the helmet body, a fixing plate is fixedly connected to the fixing plate, two groups of first springs are fixedly connected to the fixing plate, the bottom end of the first spring is fixedly connected to a card block, the card block is fixedly connected to the top of the filter, a fixing block is fixedly connected to the bottom end of the filter, the fixing block is inserted into the inside of a groove, the groove is opened at the top of a bottom plate, a slot is opened on the left side of the fixing block, a plug post is inserted into the inside of the slot, a second spring is sleeved on the plug post, the second spring is fixedly connected to the inside of a circular groove, the circular groove is opened on the left side of the bottom plate, and a pull ring is fixedly connected to the left side of the plug post.

[0007] Preferably, the bottom end of the fixed block adopts a hollow design, and two groups of mounting blocks are fixedly connected to the bottom end of the fixed block. A first magnet is fixedly connected to the inside of the mounting block, and the first magnet and the second magnet are attracted to each other. A third spring is fixedly connected to the bottom end of the second magnet, and the bottom end of the third spring is fixedly connected to a long slot, and the long slot is opened on the groove.

[0008] Preferably, a slider is fixedly connected to the left side of the filter, a lever is fixedly connected to the front end of the slider, the slider is slidably connected to the inside of a slide groove, and the slide groove is provided on the side panel.

[0009] Preferably, two groups of side panels are provided, the side panels are in contact with the left and right sides of the filter, and the side panels are fixedly connected to the front end of the helmet body.

[0010] Preferably, the lever slides inside a through slot, the through slot is provided at the front end of the side plate, and the through slot is communicated with the slide slot.

[0011] Preferably, two groups of fixing columns are fixedly connected to the bottom end of the fixing plate, and the fixing columns are inserted into the inside of the fixing groove, and the fixing groove is provided on the clamping block.

[0012] Preferably, a guide bar is fixedly connected to the inner side of the filter, and the guide bar is slidably connected to the inside of the arc-shaped groove, and the arc-shaped groove is formed on the inner wall of the fixing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the structural design of the fixing mechanism, you only need to pull the pull ring to release the engagement between the plug post and the fixing block, and then push the filter upward to open it, so that the wearer's face can be exposed, so as to relieve the discomfort caused by long working hours;

[0015] 2. Through the structural design of the first magnet and the second magnet, the function of pre-fixing the bottom end of the filter in the groove is realized, so that the elastic force of the two sets of first springs can be overcome by the attraction between the first magnet and the second magnet, so that when the bottom end of the filter is fixed to the bottom plate, there is no need to fix the filter by hand all the time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the fixing mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing plate and the filter of the utility model;

[0019] Figure 4 It is a schematic diagram of the connection structure between the side plate and the bottom plate of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure of the bottom end of the filter of the utility model.

[0021] In the figure: 1. helmet body; 20. fixing plate; 21. filter; 22. side plate; 23. bottom plate; 24. fixing strip; 25. first spring; 27. block; 28. fixing block; 29. ​​slot; 30. groove; 31. plug post; 32. circular groove; 33. second spring; 34. pull ring; 35. mounting block; 36. first magnet; 37. second magnet; 38. long groove; 39. third spring; 40. slider; 41. lever; 42. slide groove; 43. through groove; 44. guide strip; 45. arc groove; 46. fixing post; 47. fixing groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The utility model provides a technical solution: a welding protective helmet, comprising a helmet body 1 and a filter 21, wherein a fixing mechanism is arranged inside the helmet body 1, wherein the fixing mechanism comprises two sets of fixing plates 20, wherein the fixing plates 20 are welded and fixed inside the helmet body 1, wherein a fixing strip 24 is welded and fixed on the fixing plates 20, wherein two sets of first springs 25 are welded and fixed on the fixing strip 24, wherein the bottom end of the first spring 25 is fixed to a clamping block 27 by welding, wherein the clamping block 27 is designed in an L-shape as a whole, wherein the clamping block 27 is fixed to the top of the filter 21 by gluing, wherein a fixing block 28 is glued and fixed to the bottom end of the filter 21, wherein the fixing block 28 is inserted into a groove 30, wherein the groove 30 is arranged at the top of the bottom plate 23, wherein a slot 29 is arranged on the left side of the fixing block 28, wherein a plug post 31 is inserted into the slot 29, wherein a second spring 33 is sleeved on the plug post 31, wherein the second spring 33 is welded and fixed to the inside of a circular groove 32, wherein the circular groove 32 is arranged on the left side of the bottom plate 23, wherein a pull ring 34 is welded and fixed to the left side of the plug post 31;

[0024] When working, through the structural design of the fixing mechanism, it is only necessary to pull the pull ring 34 to release the engagement between the plug post 31 and the fixing block 28, and then the filter 21 can be opened by pushing the filter 21 upward, so that the wearer's face can be exposed, so as to relieve the discomfort caused by long working hours. When the filter 21 is to be opened, the pull ring 34 is first pulled outward to drive the plug post 31 to move, and the second spring 33 sleeved on the plug post 31 will be compressed. When the plug post 31 is no longer inserted in the slot 29, the fixing block 28 is no longer engaged with the plug post 31. Under the action of the two sets of first springs 25, the filter 21 will be pulled upward and stored between the two sets of fixing plates 20, thereby exposing the wearer's face. At the same time, since there is no shielding of the filter 21, it is also convenient for the wearer to observe the welding situation. Similarly, when the filter 2 The bottom end of 1 is fixed on the bottom plate 23, so that the helmet body 1 can be used normally, it is only necessary to pull the filter 21 downward to overcome the elastic force of the two groups of first springs 25, and insert the fixing block 28 fixed on the bottom end of the filter 21 into the groove 30, and then the fixing block 28 can be fixed in the groove 30 by engaging the plug post 31 with the slot 29, thereby completing the fixing of the bottom end of the filter 21 on the bottom plate 23. In the process of reinserting the fixing block 28 into the groove 30, it is necessary to pull the pull ring 34 first to prevent the plug post 31 from abutting against the bottom end of the fixing block 28, wherein the two groups of fixing plates 20 are connected together by the fixing bar 24, and the fixing plate 20 located on the top of the fixing bar 24 has an L-shaped design at its bottom end to facilitate engagement with the block 27, and the left and right sides of the second spring 33 are respectively fixedly connected to the plug post 31 and the inner wall of the circular groove 32.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The bottom end of the fixing block 28 adopts a hollow design, and two groups of mounting blocks 35 are glued and fixed on the bottom end of the fixing block 28. The mounting block 35 is made of plastic material. A first magnet 36 is glued and fixed inside the mounting block 35. The first magnet 36 and the second magnet 37 are attracted. A third spring 39 is glued and fixed to the bottom end of the second magnet 37. The bottom end of the third spring 39 is welded and fixed to the long groove 38. The long groove 38 is provided on the groove 30. A slider 40 is glued and fixed to the left side of the filter 21. A lever 41 is welded and fixed to the front end of the slider 40. The slider 40 is slidably connected to the inside of the slide groove 42. The slide groove 42 is provided on the side plate 22. Two groups of side plates 22 are provided. The side plates 22 are in contact with the left and right sides of the filter 21. The side plates 22 are glued and fixed to the front end of the helmet body 1.

[0026] During operation, the function of pre-fixing the bottom end of the filter 21 in the groove 30 is achieved through the structural design of the first magnet 36 and the second magnet 37, so that the elastic force of the two groups of first springs 25 can be overcome by the attraction between the first magnet 36 and the second magnet 37, so that when the bottom end of the filter 21 is fixed on the bottom plate 23, there is no need to fix the filter 21 by hand all the time. The second magnet 37 is supported by the third spring 39. When the fixing block 28 is inserted into the groove 30, the second magnet 37 will be attracted to the first magnet 36 under the action of the second magnet 37, causing the third spring 39 to stretch. The stability of the filter 21 during movement is ensured by the sliding of the slider 40 on the slide groove 42, and the side plate 22 is provided with two groups for fixing the left and right sides of the filter 21.

[0027] See also Figure 2 , Figure 3 and Figure 4 The lever 41 slides inside the through slot 43, which is provided at the front end of the side plate 22, and is connected to the slide slot 42. Two groups of fixing columns 46 are welded and fixed on the bottom end of the fixing plate 20, and the fixing columns 46 are inserted inside the fixing slot 47, and the fixing slot 47 is provided on the block 27. A guide bar 44 is glued and fixed to the inner side of the filter 21, and the guide bar 44 is slidably connected to the inside of the arc slot 45, and the arc slot 45 is provided on the inner wall of the fixing plate 20;

[0028] During operation, by toggling the lever 41, the slider 40 can be driven to move together with the filter 21, so as to open the filter 21, and the lever 41 and the pull ring 34 are both arranged on the left side of the helmet body 1 for easy operation. When the bottom end portion of the filter 21 is fixed to the bottom plate 23, the fixing column 46 fixed on the fixing plate 20 will be inserted into the fixing groove 47 to fix the block 27 to prevent the block 27 from shaking. Two groups of guide strips 44 are also fixed on the inner side of the filter 21. The guide strips 44 slide in the arc groove 45 to guide the movement of the filter 21 in the fixing plate 20 to ensure that the filter 21 is smoother during movement.

[0029] Working principle: A digital modular welding protective helmet in the prior art, the transparent liquid crystal display screen is connected to the helmet body, the interior of the helmet is relatively closed, and the hot air exhaled by the wearer is difficult to circulate normally with the outside air. Under long-term work, it is inevitable to cause discomfort to the wearer. In this case, through the structural design of the fixing mechanism, it is only necessary to pull the pull ring 34 to release the engagement between the plug post 31 and the fixing block 28, and then the filter 21 can be opened by pushing the filter 21 upward, so that the wearer's face can be exposed, so as to alleviate the discomfort caused by long-term work. When the filter 21 is to be opened, the pull ring 34 is first pulled outward to drive the plug post 31 to move, and the second spring 33 sleeved on the plug post 31 will be compressed. When the plug post 31 is no longer inserted in the slot 29, at this time, the fixing block 28 is no longer fixed by the plug post 31. Under the action of the two sets of first springs 25, the filter 21 will be pulled upward and stored between the two sets of fixing plates 20, thereby the wearer The wearer's face is exposed, and since there is no filter 21 blocking it, it is also convenient for the wearer to observe the welding situation. Similarly, when the bottom end of the filter 21 is to be fixed on the bottom plate 23 so that the helmet body 1 can be used normally, it is only necessary to pull the filter 21 downward to overcome the elastic force of the two sets of first springs 25, and insert the fixing block 28 fixed on the bottom end of the filter 21 into the groove 30, and then the fixing block 28 can be fixed in the groove 30 by engaging the plug post 31 with the slot 29. Thereby, the bottom end of the filter 21 is fixed on the bottom plate 23. In the process of reinserting the fixing block 28 into the groove 30, it is necessary to pull the pull ring 34 first to prevent the plug post 31 from abutting against the bottom end of the fixing block 28. The two groups of fixing plates 20 are connected together by the fixing bar 24. The fixing plate 20 located on the top of the fixing bar 24 has an L-shaped bottom end to facilitate engagement with the card block 27. The left and right sides of the second spring 33 are fixedly connected to the plug post 31 and the inner wall of the circular groove 32 respectively.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding protective helmet, comprising a helmet body (1) and a filter (21), characterized in that: A fixing mechanism is arranged inside the helmet body (1), and the fixing mechanism comprises two groups of fixing plates (20), the fixing plates (20) are fixedly connected inside the helmet body (1), the fixing plates (20) are fixedly connected to fixing strips (24), the fixing strips (24) are fixedly connected to two groups of first springs (25), the bottom ends of the first springs (25) are fixedly connected to a clamping block (27), the clamping block (27) is fixedly connected to the top end of the filter (21), and the filter (21) is fixedly connected to the top end of the filter (21). A fixing block (28) is fixedly connected to the bottom end, the fixing block (28) is inserted into the inside of a groove (30), the groove (30) is opened at the top of the bottom plate (23), a slot (29) is opened on the left side of the fixing block (28), a plug post (31) is inserted into the inside of the slot (29), a second spring (33) is sleeved on the plug post (31), the second spring (33) is fixedly connected to the inside of a circular groove (32), and the circular groove (32) is opened on the left side of the bottom plate (23).

2. A welding protective helmet according to claim 1, characterized in that: A pull ring (34) is fixedly connected to the left side of the plug post (31); the bottom end of the fixed block (28) is hollowed out; two groups of mounting blocks (35) are fixedly connected to the bottom end of the fixed block (28); a first magnet (36) is fixedly connected to the inside of the mounting block (35); the first magnet (36) and the second magnet (37) are attracted to each other; a third spring (39) is fixedly connected to the bottom end of the second magnet (37); the bottom end of the third spring (39) is fixedly connected to the long slot (38); and the long slot (38) is provided on the groove (30).

3. A welding protective helmet according to claim 1, characterized in that: A slider (40) is fixedly connected to the left side of the filter (21), a lever (41) is fixedly connected to the front end of the slider (40), and the slider (40) is slidably connected inside a slide groove (42), and the slide groove (42) is provided on the side plate (22).

4. A welding protective helmet according to claim 3, characterized in that: Two groups of side panels (22) are provided, the side panels (22) are in contact with the left and right sides of the filter (21), and the side panels (22) are fixedly connected to the front end of the helmet body (1).

5. A welding protective helmet according to claim 4, characterized in that: The lever (41) slides inside a through slot (43), the through slot (43) is formed at the front end of the side plate (22), and the through slot (43) is connected to the slide slot (42).

6. A welding protective helmet according to claim 5, characterized in that: Two groups of fixing columns (46) are fixedly connected to the bottom end of the fixing plate (20), and the fixing columns (46) are inserted into the inside of the fixing groove (47), and the fixing groove (47) is opened on the clamping block (27).

7. A welding protective helmet according to claim 5, characterized in that: A guide bar (44) is fixedly connected to the inner side of the filter (21), and the guide bar (44) is slidably connected to the inside of an arc-shaped groove (45), and the arc-shaped groove (45) is formed on the inner wall of the fixing plate (20).

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