Safety helmet with ventilation flow channel

Abstract

The safety helmet comprises a safety helmet body, a lining is arranged in an inner cavity of the safety helmet body, a ventilation plate is arranged on the rear side of the safety helmet body, a ventilation shell is fixedly connected to the front side of the safety helmet body, a positioning shell is arranged in an inner cavity of the ventilation shell, and a ventilation flow channel is formed in the positioning shell. The dustproof safety helmet has the advantages that the problems that heat dissipation holes of an existing safety helmet do not have the dustproof function, dust enters the safety helmet, and the safety helmet is not prone to falling off after dust enters the safety helmet are solved, so that the safety helmet is not prone to falling off, and the safety helmet is not prone to falling off are solved. And discomfort can be caused to the head of the user.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety helmets, in particular to a safety helmet with a ventilation channel. Background Art

[0002] A safety helmet is a hat that protects the human head from injuries caused by falling objects and other specific factors. The safety helmet consists of a helmet shell, a hat lining, a chin strap and accessories.

[0003] Safety helmets are often used on construction sites. In order to improve wearing comfort, heat dissipation holes are opened on their surfaces. However, the heat dissipation holes often do not have dust-proof functions. When dust enters the interior of the safety helmet, it will cause discomfort to the user's head. In addition, when used in winter, cold air will enter the interior of the safety helmet through the heat dissipation holes. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a safety helmet with a ventilation channel, which has the advantages of preventing dust from entering the ventilation channel and improving wearing comfort. At the same time, the ventilation channel can be blocked to facilitate users to use it in winter. It solves the problem that the heat dissipation holes of the existing safety helmets do not have a dust-proof function, and dust entering the interior of the safety helmet will cause discomfort to the user's head.

[0005] The utility model is achieved in that a safety helmet with a ventilation channel comprises a safety helmet body, an inner cavity of the safety helmet body is provided with an inner lining, a ventilation plate is provided on the rear side of the safety helmet body, a ventilation shell is fixedly connected to the front side of the safety helmet body, a positioning shell is provided in the inner cavity of the ventilation shell, a fan blade is provided in the inner cavity of the positioning shell, a knob is provided on the top of the ventilation shell, the bottom of the knob passes through the inner cavity of the ventilation shell and is fixedly connected with a first bevel gear, the right side of the first bevel gear is meshedly connected with a second bevel gear, the inner cavity of the second bevel gear is fixedly connected with a transmission rod, both sides of the transmission rod are fixedly connected with a third bevel gear, the opposite sides of the two third bevel gears are meshedly connected with a fourth bevel gear, the inner cavity of the fourth bevel gear is fixedly connected with a screw, the top and bottom of the screw are movably connected to the inner wall of the ventilation shell, the surface of the screw is threadedly connected with a threaded sleeve, a positioning frame is fixedly connected between the opposite sides of the two threaded sleeves, and a wind shield is provided on the rear side of the positioning frame, and the rear side of the wind shield contacts the front side of the ventilation shell.

[0006] As a preferred embodiment of the utility model, a buffer spring is fixedly connected to the surface of the lining, a side of the buffer spring away from the lining is fixedly connected to the inner wall of the helmet body, and a ventilation groove is opened on the surface of the lining.

[0007] As a preferred embodiment of the present invention, the inner cavity of the positioning shell is provided with a filter screen, and the material of the filter screen is metal.

[0008] As a preferred embodiment of the present invention, a limiting sleeve is provided on the surface of the knob, and the bottom of the limiting sleeve is fixedly connected to the top of the ventilation shell.

[0009] As a preferred embodiment of the present invention, two positioning sleeves are provided on the surface of the transmission rod, and the rear sides of the positioning sleeves are fixedly connected to the inner wall of the ventilation shell.

[0010] As a preferred embodiment of the present invention, two bearing seats are sleeved on the surface of the screw rod, and opposite sides of the two bearing seats are fixedly connected to the inner wall of the ventilation shell.

[0011] As a preferred embodiment of the present invention, the top and bottom of the positioning frame are fixedly connected with a retaining plate, and the rear side of the retaining plate is fixedly connected to the front side of the windshield.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The present invention solves the problem that the heat dissipation holes of the existing helmets do not have the dustproof function, and when dust enters the interior of the helmets, it will cause discomfort to the user's head.

[0014] 2. The utility model improves the buffering and ventilation performance of the lining through the coordinated use of the buffer spring and the ventilation groove, thereby improving the wearing comfort of the user.

[0015] 3. The utility model plays a dust-proof role on the helmet body through the filter screen, preventing dust from entering the inner cavity of the helmet body.

[0016] 4. The utility model has a limiting effect on the knob through the limiting sleeve, and at the same time facilitates the rotation of the knob.

[0017] 5. The utility model uses the positioning sleeve to position the transmission rod and prevent the transmission rod from being displaced during use.

[0018] 6. The utility model has a limiting effect on the screw rod through the bearing seat, and at the same time facilitates the rotation of the screw rod.

[0019] 7. The utility model fixes the windshield through the retaining plate and prevents the windshield from falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a rear view of the structure of the safety helmet body of the utility model;

[0022] Figure 3 It is a right side sectional view of the safety helmet body and the lining structure of the utility model;

[0023] Figure 4 This is a main view of the ventilation shell, positioning shell and filter screen structure of the utility model;

[0024] Figure 5 This is a front cross-sectional view of the ventilation shell structure of the utility model;

[0025] Figure 6 yes Figure 5 A magnified view of the structure at center.

[0026] In the figure: 1. helmet body; 2. lining; 3. ventilation plate; 4. ventilation shell; 5. positioning shell; 6. fan blades; 7. knob; 8. first bevel gear; 9. second bevel gear; 10. transmission rod; 11. third bevel gear; 12. fourth bevel gear; 13. screw rod; 14. threaded sleeve; 15. positioning frame; 16. wind shield; 17. buffer spring; 18. ventilation slot; 19. filter screen; 20. limit sleeve; 21. positioning sleeve; 22. bearing seat; 23. retaining plate. DETAILED DESCRIPTION

[0027] like Figures 1 to 6 As shown, the safety helmet with ventilation flow channel provided by the embodiment of the utility model comprises a safety helmet body 1, the inner cavity of the safety helmet body 1 is provided with an inner lining 2, the rear side of the safety helmet body 1 is provided with a ventilation plate 3, the front side of the safety helmet body 1 is fixedly connected with a ventilation shell 4, the inner cavity of the ventilation shell 4 is provided with a positioning shell 5, the inner cavity of the positioning shell 5 is provided with a fan blade 6, the top of the ventilation shell 4 is provided with a knob 7, the bottom of the knob 7 passes through the inner cavity of the ventilation shell 4 and is fixedly connected with a first bevel gear 8, the right side of the first bevel gear 8 is meshedly connected with a second bevel gear 9, and the second bevel gear 9 is A transmission rod 10 is fixedly connected to the inner cavity, and third bevel gears 11 are fixedly connected to both sides of the transmission rod 10. The opposite sides of the two third bevel gears 11 are meshed with fourth bevel gears 12. A screw rod 13 is fixedly connected to the inner cavity of the fourth bevel gear 12. The top and bottom of the screw rod 13 are movably connected to the inner wall of the ventilation shell 4. A threaded sleeve 14 is threadedly connected to the surface of the screw rod 13. A positioning frame 15 is fixedly connected between the opposite sides of the two threaded sleeves 14. A wind shield 16 is arranged on the rear side of the positioning frame 15, and the rear side of the wind shield 16 contacts the front side of the ventilation shell 4.

[0028] refer to Figure 3 A buffer spring 17 is fixedly connected to the surface of the lining 2 , and the side of the buffer spring 17 away from the lining 2 is fixedly connected to the inner wall of the helmet body 1 , and a ventilation groove 18 is opened on the surface of the lining 2 .

[0029] By adopting the above solution, the buffer spring 17 and the ventilation slot 18 are used in combination, thereby improving the buffering and ventilation performance of the lining 2, thereby improving the wearing comfort of the user.

[0030] refer to Figure 1 and Figure 4 The inner cavity of the positioning shell 5 is provided with a filter screen 19, and the material of the filter screen 19 is metal.

[0031] The above solution is adopted: the filter screen 19 plays a role in preventing dust from entering the inner cavity of the helmet body 1 .

[0032] refer to Figure 4 and Figure 6 A limiting sleeve 20 is sleeved on the surface of the knob 7 , and the bottom of the limiting sleeve 20 is fixedly connected to the top of the ventilation shell 4 .

[0033] With the above solution, the limiting sleeve 20 can limit the position of the knob 7 and facilitate the rotation of the knob 7.

[0034] refer to Figure 6 Two positioning sleeves 21 are sleeved on the surface of the transmission rod 10 , and the rear sides of the positioning sleeves 21 are fixedly connected to the inner wall of the ventilation shell 4 .

[0035] With the above solution, the positioning sleeve 21 plays a role in positioning the transmission rod 10 and prevents the transmission rod 10 from shifting when in use.

[0036] refer to Figure 4 and Figure 5 Two bearing seats 22 are sleeved on the surface of the screw rod 13 , and opposite sides of the two bearing seats 22 are fixedly connected to the inner wall of the ventilation shell 4 .

[0037] By adopting the above solution, the bearing seat 22 can limit the screw rod 13 and facilitate the rotation of the screw rod 13.

[0038] refer to Figure 6 The top and bottom of the positioning frame 15 are fixedly connected with a retaining plate 23, and the rear side of the retaining plate 23 is fixedly connected to the front side of the windshield plate 16.

[0039] With the above solution, the windshield 16 is fixed by the retaining plate 23 and the windshield 16 is prevented from falling off during use.

[0040] The working principle of this utility model:

[0041] When in use, the positioning shell 5 serves as the air inlet of the helmet body 1, and air will flow into the inner cavity of the helmet body 1 through the positioning shell 5, and the filter screen 19 can prevent the helmet body 1 from dust and prevent dust from entering the inner cavity of the helmet body 1. When used in cold winter, the staff turns the knob 7, and the knob 7 drives the first bevel gear 8 to rotate when it is turned, and the first bevel gear 8 drives the second bevel gear 9 to rotate when it is rotated, and the second bevel gear 9 drives the transmission rod 10 to rotate when it is rotated, and the transmission rod 10 drives the two third gears to rotate when it is rotated. The bevel gear 11 rotates, and the two third bevel gears 11 drive the two fourth bevel gears 12 to rotate when rotating. The two fourth bevel gears 12 drive the two screw rods 13 to rotate when rotating. The two screw rods 13 drive the two threaded sleeves 14 to move downward when rotating. The two threaded sleeves 14 drive the positioning frame 15 to move downward when moving downward. The positioning frame 15 drives the wind shield 16 to move downward when moving downward. The wind shield 16 can block the air inlet to avoid heat loss inside the helmet body 1, thereby improving the wearing comfort of the user.

Claims

1. A safety helmet with a ventilation channel, comprising a safety helmet body (1), characterized in that: The inner cavity of the helmet body (1) is provided with an inner lining (2), the rear side of the helmet body (1) is provided with a ventilation plate (3), the front side of the helmet body (1) is fixedly connected with a ventilation shell (4), the inner cavity of the ventilation shell (4) is provided with a positioning shell (5), the inner cavity of the positioning shell (5) is provided with a fan blade (6), the top of the ventilation shell (4) is provided with a knob (7), the bottom of the knob (7) penetrates into the inner cavity of the ventilation shell (4) and is fixedly connected with a first bevel gear (8), the right side of the first bevel gear (8) is meshingly connected with a second bevel gear (9), and the inner cavity of the second bevel gear (9) is fixedly connected with a transmission rod (10). ), both sides of the transmission rod (10) are fixedly connected to third bevel gears (11), the opposite sides of the two third bevel gears (11) are meshingly connected to fourth bevel gears (12), the inner cavity of the fourth bevel gear (12) is fixedly connected to a screw rod (13), the top and bottom of the screw rod (13) are movably connected to the inner wall of the ventilation shell (4), the surface of the screw rod (13) is threadedly connected to a threaded sleeve (14), and a positioning frame (15) is fixedly connected between the opposite sides of the two threaded sleeves (14), and a windshield (16) is arranged on the rear side of the positioning frame (15), and the rear side of the windshield (16) is in contact with the front side of the ventilation shell (4).

2. The helmet with ventilation channel according to claim 1, characterized in that: A buffer spring (17) is fixedly connected to the surface of the lining (2); a side of the buffer spring (17) away from the lining (2) is fixedly connected to the inner wall of the helmet body (1); and a ventilation groove (18) is provided on the surface of the lining (2).

3. The helmet with ventilation channel according to claim 1, characterized in that: The inner cavity of the positioning shell (5) is provided with a filter screen (19), and the material of the filter screen (19) is metal.

4. The helmet with ventilation channels according to claim 1, 2 or 3, characterized in that: A limiting sleeve (20) is sleeved on the surface of the knob (7), and the bottom of the limiting sleeve (20) is fixedly connected to the top of the ventilation shell (4).

5. The helmet with ventilation channels according to claim 1, 2 or 3, characterized in that: Two positioning sleeves (21) are sleeved on the surface of the transmission rod (10), and the rear sides of the positioning sleeves (21) are fixedly connected to the inner wall of the ventilation shell (4).

6. The helmet with ventilation channels according to claim 1, 2 or 3, characterized in that: Two bearing seats (22) are sleeved on the surface of the screw rod (13), and opposite sides of the two bearing seats (22) are fixedly connected to the inner wall of the ventilation shell (4).

7. The helmet with ventilation channels according to claim 1, 2 or 3, characterized in that: The top and bottom of the positioning frame (15) are both fixedly connected to a retaining plate (23), and the rear side of the retaining plate (23) is fixedly connected to the front side of the windshield plate (16).

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