CN213604730U - Top ventilation device for helmet - Google Patents

Abstract

The utility model belongs to the technical field of helmets and discloses a top ventilation device for a helmet, which comprises a top ventilation body, a pusher and a slip sheet, wherein the top ventilation body is connected to the helmet body, the top ventilation body is provided with a long slot hole, and one side facing the helmet body is provided with a baffle; the pusher is arranged on one side of the top ventilation body; the gleitbretter is located the opposite side of top ventilation body, and the gleitbretter is worn to establish the slotted hole with the pusher and is connected, and the pusher can drive the gleitbretter and slide along the slotted hole for top ventilation body, and when gleitbretter and baffle looks butt, top ventilation unit is in the closed condition, and when gleitbretter and baffle phase separation, top ventilation unit is in the open mode. The utility model discloses have and open and close two kinds of states, can adjust the amount of wind and the wind speed of helmet internal portion to realize that the inside temperature of helmet is balanced with people's temperature, solve the limitation problem in fixed ventilation hole, satisfy different audiences' individualized demand, with the comfort level of guaranteeing that the helmet worn.

Description

Top ventilation device for helmet

Technical Field

The utility model relates to a helmet technical field especially relates to a top ventilation unit for helmet.

Background

The helmet is a harness for protecting the head and is an indispensable tool in people's traffic, wherein the air permeability is a key performance index of the helmet, and the helmet can ensure the dryness of the head during long-distance riding and bring comfort to a wearer so as to be better concentrated on riding.

The more or larger the number of vents in the helmet, the greater the airflow around the head and the cooler it will feel, but the more the head is exposed and the less protection it will be. And along with the popularization of the helmet, the fixed ventilation holes are arranged on the helmet, so that the audiences of the helmet are fixed, and the individualized air volume adjusting requirement of a wearer cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a top ventilation unit for helmet to solve and set up the problem that can not adjust the amount of wind of fixed ventilation hole on the helmet.

To achieve the purpose, the utility model adopts the following technical proposal:

a top ventilation apparatus for a helmet, the helmet comprising a helmet body having first and second ventilation apertures disposed thereon, the top ventilation apparatus comprising:

the top ventilation body is connected to the helmet body, a long slotted hole is formed in the top ventilation body, and a baffle is arranged on one side, facing the helmet body, of the top ventilation body;

the pusher is arranged on one side of the top ventilation body;

the sliding sheet is arranged on the other side of the top ventilation body, the sliding sheet and the pusher are connected through the long slotted hole, the pusher can drive the sliding sheet to slide along the long slotted hole relative to the top ventilation body, when the sliding sheet is abutted to the baffle, the top ventilation device is in a closed state, and when the sliding sheet is separated from the baffle, the top ventilation device is in an open state.

Optionally, the top ventilation body is arranged above the first ventilation hole and the second ventilation hole, and is fixedly connected with the helmet body, and the first ventilation hole is communicated with a third ventilation hole arranged at the tail end of the top ventilation body.

Optionally, the baffle is equipped with two, two the baffle is located respectively the both sides of gleitbretter just form the throat along the air inlet direction, the gleitbretter can end to be in throat department.

Optionally, the second vent hole is disposed in front of the throat, the second vent hole is in a closed state when the top ventilation device is in an open state, and the second vent hole is in a ventilation state when the top ventilation device is in a closed state.

Optionally, one of the pusher and the sliding piece is provided with a clamping protrusion, the other is provided with a clamping groove, and the clamping protrusion can penetrate through the slotted hole and is clamped in the clamping groove.

Optionally, a guide hole is formed in the top ventilation body, the long axis direction of the guide hole is parallel to the long axis direction of the slotted hole, one of the pusher and the sliding piece is provided with a pin, and the other is provided with a pin hole, and the pin can penetrate through the guide hole and is in pin connection with the pin hole.

Optionally, the tail end of the slide plate in the air inlet direction is provided with a positioning long hole, and the positioning long hole is connected with a positioning pin arranged on the top ventilation body in a matched mode.

Optionally, the length of the positioning long hole, the length of the long slot hole and the length of the guide hole are equal.

Optionally, first ventilation hole is equipped with a plurality ofly along the direction of ventilating, third ventilation hole is followed the direction of ventilating is equipped with a plurality ofly, and is a plurality of first ventilation hole and a plurality of third ventilation hole is at the perpendicular to helmet body surface direction staggered distribution.

Optionally, the size of the third vent hole is larger than the size of the first vent hole.

The utility model has the advantages that:

the utility model discloses a top ventilation unit for helmet, the setting is at helmet body top, drive the slip of gleitbretter for top ventilation body through the clipper, make the gleitbretter stop to on the baffle or separate with the baffle, realize top ventilation unit and close and open two kinds of states, reach different ventilation function, be convenient for according to different environment, artificially adjust the flow and the speed of the inside air current of helmet, thereby realize that the inside temperature of helmet is balanced with people's temperature, the problem of the volume of can not adjust of solution fixed ventilation hole, satisfy different audiences's individualized demand, the comfort level of wearing with the assurance helmet.

Drawings

Fig. 1 is a schematic view of the position of a top ventilation device for a helmet on a helmet body of the helmet provided by the present invention;

fig. 2 is a schematic view of a closed state of a top vent for a helmet provided by the present invention;

fig. 3 is a schematic view of a ventilation method on a helmet body when a top ventilation device for a helmet provided by the present invention is closed;

fig. 4 is a schematic view of the top vent for a helmet according to the present invention in an open position;

fig. 5 is a schematic view of a ventilation method on a helmet body when the top ventilation device for a helmet provided by the present invention is opened;

fig. 6 is a schematic structural view of a top ventilation device provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a clipper provided in an embodiment of the present invention;

fig. 8 is a schematic view of the positions of the first vent hole and the second vent hole on the helmet body according to an embodiment of the present invention.

In the figure:

1. a helmet body; 11. a first vent hole; 12. a second vent hole; 2. a top ventilation device; 21. a top vent body; 211. a long slot hole; 212. a baffle plate; 213. a third vent hole; 214. a guide hole; 215. positioning pins; 216. a limiting baffle plate; 22. a clipper; 221. clamping convex; 222. a pin; 23. sliding blades; 231. a card slot; 232. a pin hole; 233. the long hole is positioned.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a top ventilation unit for helmet, as shown in fig. 1-8, top ventilation unit 2 includes top ventilation body 21, clipper 22 and gleitbretter 23, top ventilation body 21 connects on helmet body 1, is equipped with slotted hole 211 on top ventilation body 21, and is equipped with baffle 212 towards one side of helmet body 1 on top ventilation body 21; the pusher 22 is arranged on one side of the top ventilation body 21; the sliding sheet 23 is arranged on the other side of the top ventilation body 21, the sliding sheet 23 and the pusher 22 are connected through the long slot hole 211, the pusher 22 can drive the sliding sheet 23 to slide along the long slot hole 211 relative to the top ventilation body 21, when the sliding sheet 23 abuts against the baffle 212, the top ventilation device 2 is in a closed state, and when the sliding sheet 23 is separated from the baffle 212, the top ventilation device 2 is in an open state.

As can be seen from fig. 3 and 5, when the top ventilation device 2 is closed, the second ventilation holes 12 of the helmet body 1 are in a ventilation state, and ambient wind can enter the interior of the helmet body 1 through the second ventilation holes 12. When the top ventilation means 2 is opened, the second ventilation holes 12 are closed, and ambient wind can enter only a gap portion between the top ventilation means 2 and the helmet body 1 from both sides of the front end of the top ventilation means 2. As shown in fig. 2, in the present embodiment, the top ventilation body 21 is connected to the outer side surface of the helmet body 1 by a screw, and a gap is formed between the top ventilation body and the outer side surface by setting the height of the screw hole, the width of the slide piece 23 varies in the direction perpendicular to the air intake direction, and when the slide piece 23 slides backward (back direction), the wider front end portion contacts with the baffle 212, the top ventilation device 2 is closed, and the second ventilation hole 12 ventilates; after the slide sheet 23 slides forward, the slide sheet 23 is separated from the baffle 212, and the top vent 2 is opened while the second vent hole 12 is closed.

As shown in fig. 8, a first ventilation hole 11 and a second ventilation hole 12 are provided on the helmet body 1, wherein the first ventilation hole 11 is provided at the back of the helmet body 1, and the second ventilation hole 12 is provided at the top of the helmet body 1, the utility model discloses a set up a top ventilation device 2 at the top and the rear of the helmet body 1 to control the ventilation of the helmet body 1, when the top ventilation device 2 is closed, the second ventilation hole 12 provided at the top of the helmet body 1 is in a ventilation state, the ambient air can enter the helmet body 1 from the second ventilation hole 12, and then return to the atmosphere environment through the first ventilation hole 11 provided at the rear of the helmet body 1 and a third ventilation hole 213 provided at the end of the top ventilation body 21 (corresponding to the rear position of the helmet body 1 is the end position); when the top ventilation device 2 is opened, the second ventilation holes 12 are in a closed state, ambient wind enters from two sides of the top ventilation device 2 and is discharged from the third ventilation holes 213, negative pressure is formed in the areas, corresponding to the first ventilation holes 11, of the surfaces of the top ventilation device 2 and the helmet body 1, and heat inside the helmet body 1 is discharged through the first ventilation holes 11 and the third ventilation holes 33 in sequence under the action of the negative pressure.

The helmet body 1 in the prior art is configured to exchange ventilation between the head and the external environment by providing a plurality of fixed first ventilation holes 11 and second ventilation holes 12 in the helmet body 1, and is not adjustable. The utility model discloses a ventilation unit for helmet, like figure 1, cross the surface setting at the helmet body 1, can adjust the amount of wind of first ventilation hole 11 and second ventilation hole 12 on the helmet body 1 to satisfy different wearers' amount of wind demands. As shown in fig. 2, the top ventilation device 2 is in a closed state, at the moment, the second ventilation hole 12 in the helmet body 1 is in an open state as shown in fig. 3, at the moment, ambient air can enter the helmet body 1 from the second ventilation hole 12, then is discharged from the first ventilation hole 11 arranged at the rear of the helmet body 1, and then is discharged through the third ventilation hole 213 in the top ventilation device 2 in sequence, so that an ambient air circulation is realized, and in the process, because the ambient air enters the helmet body 1 due to the impact extrusion effect of air flow, the air volume and the air speed are both large, and a good ventilation and heat dissipation effect can be achieved. When the top ventilation device 2 is opened, as shown in fig. 4, ambient wind can enter from two sides of the front end of the top ventilation device 2 and is discharged from the third vent hole 213 at the tail end, as shown in fig. 5, at the moment, the second vent hole 12 on the helmet body 1 is in a closed state, so that negative pressure is formed between the top ventilation device 2 and the helmet body 1, under the action of the negative pressure, head heat is discharged from the first vent hole 11, and is discharged from the third vent hole 213 at the tail end of the top ventilation device 2 along with the ambient wind, and returns to the environment, so that one-time ambient wind circulation is realized, in the process, because the ambient wind enters from two sides of the top ventilation device 2 and is discharged from the tail end, the ambient wind does not enter the helmet body 1, the head heat is discharged only under the action of the negative pressure to achieve the effect of cooling, so that the air volume and the wind speed of a wearer are small, a good heat dissipation effect is still achieved, the second vent hole 12 in front is closed to reduce the wind resistance, facilitating rapid travel by the wearer.

It can be understood that the utility model discloses a set up the top ventilation unit 2 that can close and open, reach different ventilation regulatory function, be convenient for according to different environment, artificially adjust the flow and the speed of the 1 inside air current of helmet body to realize that the temperature of the 1 inside temperature of helmet body is balanced with the temperature of the person's of wearing head mutually, solve the limitation problem in fixed ventilation hole, satisfy different audiences' individualized demand, in order to guarantee the comfort level that the helmet worn. When a wearer rides, the helmet body 1 has internal and external circulation ventilation, the air circulation of the head and the internal contact part of the helmet body 1 is effectively improved, and the contact surface of the head is dry and comfortable even if the wearer wears the helmet for a long time. When the speed of riding is very fast, the environment wind gets into that helmet body 1 is inside can form very big windage, just at this time need open top ventilation unit 2 for inside environment wind does not directly get into helmet body 1, reduces the windage, carries and ventilates the head heat according to the negative pressure principle, realizes the regulation to the amount of wind and wind speed.

Optionally, the top vent body 21 is disposed above the first vent hole 11 and the second vent hole 12, and is fixedly connected to the helmet body 1, and the first vent hole 11 is communicated with a third vent hole 213 disposed at the end of the top vent body 21.

As shown in fig. 3 and 5, when the top vent 2 is in the open and closed states, the first vent hole 11 and the third vent hole 213 are both in the connected state, so that heat discharged from the first vent hole 11 can be discharged in time. The top vent body 21 is arranged above the first vent hole 11 and the second vent hole 12, so that the ventilation state of the second vent hole 12 can be controlled simultaneously when the top vent device 2 is in the open state and the closed state. The mode of setting up top ventilation unit 2 can adjust between different amount of wind and wind speed, satisfies different wearers to the individualized demand of amount of wind and wind speed, expands the application group of helmet for more people can all comfortably wear the helmet.

As shown in fig. 2 and 4, two baffles 212 are provided, the two baffles 212 are respectively provided at two sides of the sliding piece 23 and form a throat along the air inlet direction, and the sliding piece 23 can be stopped at the throat.

By forming the two baffles 212 as a throat, when the top vent 2 is in the open state, the ambient wind can enter the inside of the top vent 2 from both side edges along the baffles 212, and can finally be discharged from the third vent hole 213 at the end of the top vent body 21 along the sliding piece 23. The width of gleitbretter 23 and top ventilation body 21 narrows down from windward side one side towards leeward side one side gradually, and the throat shape does benefit to and forms great inflow entrance, rectifies in baffle 212 department simultaneously to the entry air current forms the negative pressure in the top of first ventilation hole 11 on helmet body 1 through the top of first ventilation hole 11, plays the radiating effect of head.

Optionally, the second vent hole 12 is arranged in front with respect to the throat, said second vent hole 12 being in a closed state when the top ventilation device 2 is in the open state, said second vent hole 12 being in a ventilation state when said top ventilation device 2 is in the closed state.

It can be understood that, the top ventilation device 2 is provided with the baffle 212 with the necking, the opening and closing of the necking are realized by the abutting or separating of the baffle 212 at the necking in the front and back sliding process of the sliding sheet 23, and further the opening and closing states of the top ventilation device 2 are realized, wherein the arrangement of the sliding sheet 23 is required to meet the requirement that the top ventilation device 2 is opened and closed, and meanwhile, the effect of closing and opening the second ventilation hole 12 on the helmet body 1 is achieved, so that the helmet body 1 can obtain two different heat exchange ventilation methods under two states of the top ventilation device 2.

Optionally, one of the pusher 22 and the sliding piece 23 is provided with a locking protrusion 221, and the other is provided with a locking groove 231, and the locking protrusion 221 can penetrate through the slot hole 211 and can be locked in the locking groove 231.

Certainly, the pusher 22 and the sliding piece 23 can also be connected in other manners such as bolt connection, the clamping protrusion 221 and the clamping groove 231 are conveniently connected in a matching manner, and the pusher 22 and the sliding piece 23 are mainly positioned in the moving direction so that the pusher 22 can drive the sliding piece 23 to slide. The clamping protrusion 221 is of a structure with an elastic piece on the side, when the clamping protrusion 221 is inserted into the clamping groove 231, the elastic piece can be expanded in the clamping groove 231 to play a fastening role, and the elastic piece structure is convenient to detach.

Optionally, the top vent body 21 is provided with a guide hole 214, a long axis direction of the guide hole 214 is parallel to a long axis direction of the slotted hole 211, one of the pusher 22 and the sliding piece 23 is provided with a pin 222, and the other is provided with a pin hole 232, and the pin 222 can penetrate through the guide hole 214 and is pinned in the pin hole 232.

Referring to fig. 6 and 7, two guide holes 214 are preferably provided, and are respectively located on both sides of the slot hole 211 and aligned with the long axis direction of the slot hole 211, so as to provide a guide function for the movement of the slide 23. The length of the guiding hole 214 is not less than the length of the slot hole 211, so as to avoid affecting the sliding distance of the sliding plate 23.

Optionally, the slide 23 is provided with a long positioning hole 233 at the end along the air inlet direction, and the long positioning hole 233 is connected to the positioning pin 215 provided on the top ventilation body 21 in a matching manner.

As shown in fig. 6, the slide sheet 23 has a long positioning hole 233 at the end along the air inlet direction, the long positioning hole 233 is parallel to the long axis of the long slot hole 211, as shown in fig. 2 and 4, the top ventilation body 21 has a positioning pin 215, and after the slide sheet 23 and the pusher 22 are installed in place, the positioning pin 215 is inserted into the long positioning hole 233 and can slide along the long positioning hole 233 in the sliding process of the slide sheet 23. Further, as shown in fig. 2 and 4, the top ventilation body 21 is provided with a limiting blocking piece 216 at two side edges relative to the sliding piece 23, and the limiting blocking piece 216 can be pressed on the edge of the sliding piece 23 to further limit the sliding piece 23. During installation, the sliding piece 23 is firstly inserted into the limiting blocking piece 216, the positioning pin 215 is inserted into the positioning long hole 233 through elastic deformation of the sliding piece 23, and finally the pusher 22 and the sliding piece 23 are installed.

Alternatively, the lengths of the positioning long hole 233, the long groove hole 211, and the guide hole 214 are equal.

It can be understood that, during the sliding of the sliding piece 23, the positioning pin 215 slides in the long positioning hole 233, the locking protrusion 221 and the locking groove 231 slide in the long slot hole 211, and the pin 222 slides in the guiding hole 214, and the sliding of the three are consistent, so as to ensure the stable movement of the sliding piece 23.

Optionally, the first ventilation holes 11 are provided in plural along the ventilation direction, the third ventilation holes 213 are provided in plural along the ventilation direction, and the plural first ventilation holes 11 and the plural third ventilation holes 213 are distributed in a staggered manner in a direction perpendicular to the surface of the helmet body 1. In this embodiment, the size of the third ventilation hole 213 is larger than that of the first ventilation hole 11. As shown in fig. 1 and 8, the first ventilation hole 11 is a row of round holes arranged at intervals, the third ventilation hole 213 is a row of long holes arranged at intervals, the first ventilation hole 11 and the third ventilation hole 213 are both located on one side of the helmet body 1 facing away from the wind, the air outlet direction is inclined downward, when ambient wind enters from the windward side, the smaller first ventilation hole 11 and the larger third ventilation hole 213 form larger negative pressure more easily, the heat discharged from the first ventilation hole 11 is discharged through the third ventilation hole 213 and the gap outlet between the top ventilation body 21 and the helmet body 1 along the air discharge direction, and the better air permeability effect is provided inside the helmet body 1.

Advantageously, as shown in fig. 6, three third ventilation holes 213 are formed in the top ventilation body 21 on the leeward side along the ventilation direction, the three third ventilation holes 213 are arranged at intervals, a guide plate is arranged in the air outlet direction of each third ventilation hole 213, two ends of the guide plate are connected to the top ventilation body 21, the guide plate is arranged in an inclined manner along the thickness direction of the top ventilation body 3, the inclined direction is that an inclined air exhaust duct is formed in an inclined manner upwards from the windward side toward the leeward side, so that the ambient air in the third ventilation holes 213 is discharged in an inclined manner upwards without affecting the downwind direction of the wind in the adjacent third ventilation holes 213.

Supplementary note, when the top ventilation body 21 is installed, a gap is formed between the top ventilation body 21 and the helmet body 1, namely, the two baffles are not in contact with each other outside the processing connection position, the two baffles 212 are contracted from two sides of the top ventilation body 1 to the center in the gap to form a throat, when the sliding sheet 23 slides backwards, the sliding sheet 23 can be stopped at the throat to seal the gap inlet, when the sliding sheet 23 slides forwards, the sliding sheet 23 is separated from the throat, ambient wind can enter the gap between the top ventilation body 21 and the helmet body 1 from the gap and the throat and is exhausted from the third vent hole 213, meanwhile, negative pressure is formed above the first vent hole 11, and heat inside the helmet body 1 penetrates through the first vent hole 11 and is exhausted along with the ambient wind, so that the heat exchange and ventilation effects are realized.

To sum up, the utility model discloses a set up top ventilation unit 2's mode, through top ventilation unit 2's regulation, form two kinds of inlet air ducts respectively in the inside and outside both sides of helmet body 1, the intake is different with the wind speed, consequently can satisfy different users ' the demand of wearing, has solved the limitation problem that current helmet only has fixed ventilation hole. Use the utility model provides a top ventilation unit can carry out amount of wind and wind speed regulation for the gas permeability and the security of helmet all satisfy the requirements, improve the travelling comfort of wearing of helmet.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A top ventilation device for a helmet, the helmet comprising a helmet body (1), the helmet body (1) being provided with a first ventilation hole (11) and a second ventilation hole (12), characterized in that the top ventilation device (2) comprises:

the helmet body (1) is connected with the top ventilation body (21), the top ventilation body (21) is provided with a long slotted hole (211), and one side of the top ventilation body (21) facing the helmet body (1) is provided with a baffle (212);

the clipper (22), the said clipper (22) locates one side of the said top ventilation body (21);

slip sheet (23), slip sheet (23) are located the opposite side of top ventilation body (21), slip sheet (23) with clipper (22) are worn to establish slotted hole (211) are connected, clipper (22) can drive slip sheet (23) for top ventilation body (21) are followed slotted hole (211) slide, work as slip sheet (23) with when baffle (212) looks butt, top ventilation unit (2) are in the closed condition, work as slip sheet (23) with when baffle (212) phase separation, top ventilation unit (2) are in the open mode.

2. The top ventilation device for helmets according to claim 1, wherein the top ventilation body (21) is disposed above the first ventilation hole (11) and the second ventilation hole (12) and is fixedly connected to the helmet body (1), and the first ventilation hole (11) communicates with a third ventilation hole (213) provided at an end of the top ventilation body (21).

3. The top ventilation device for helmets according to claim 1, wherein there are two baffles (212), two baffles (212) are respectively disposed on both sides of the sliding piece (23) and form a throat along the air intake direction, and the sliding piece (23) can stop at the throat.

4. A top vent for helmets according to claim 3, wherein the second vent hole (12) is arranged in front with respect to the throat, the second vent hole (12) being in a closed state when the top vent (2) is in an open state and the second vent hole (12) being in a vent state when the top vent (2) is in a closed state.

5. The top ventilation device for helmets according to claim 1, wherein one of the pusher (22) and the sliding piece (23) is provided with a locking protrusion (221), and the other is provided with a locking groove (231), and the locking protrusion (221) can penetrate through the slotted hole (211) and be locked in the locking groove (231).

6. The top ventilation device for helmets according to claim 1, wherein the top ventilation body (21) is provided with a guide hole (214), the long axis direction of the guide hole (214) is parallel to the long axis direction of the slotted hole (211), one of the pusher (22) and the slide (23) is provided with a pin (222), and the other is provided with a pin hole (232), and the pin (222) can pass through the guide hole (214) and is pinned in the pin hole (232).

7. The top ventilation device for the helmet as claimed in claim 6, wherein the slide plate (23) has a long positioning hole (233) at the end along the air intake direction, and the long positioning hole (233) is connected with a positioning pin (215) disposed on the top ventilation body (21) in a matching manner.

8. The top vent for helmets according to claim 7, wherein the length of the positioning long hole (233), the long slot hole (211) and the guide hole (214) is equal.

9. The top ventilation device for helmets according to claim 2, wherein the first ventilation hole (11) is provided in plurality along a ventilation direction, the third ventilation hole (213) is provided in plurality along the ventilation direction, and the plurality of first ventilation holes (11) and the plurality of third ventilation holes (213) are staggered in a direction perpendicular to the surface of the helmet body (1).

10. The top vent for helmets according to claim 9, wherein the size of the third vent hole (213) is larger than the size of the first vent hole (11).

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