CN219353180U - Protective helmet - Google Patents

Abstract

The utility model relates to the technical field of protective articles and discloses a protective helmet which comprises a helmet body, a protective mask, a fixed column, a limiting spring and a limiting block, wherein the protective mask is connected with one end of the fixed column, the limiting block is connected with the fixed column through the limiting spring, a fixing hole matched with the fixed column and a limiting hole matched with the limiting block are formed in the helmet body, and the fixing hole is communicated with the limiting hole. The protective helmet solves the technical problems that the face shield of the traditional protective helmet is arranged at the top of the helmet through the rotation of the rotating shaft and is difficult to detach, and law enforcement personnel can flexibly use the protective face shield with different functions under the condition of not changing the helmet body according to task requirements when executing different tasks.

Description

Protective helmet

Technical Field

The utility model relates to the technical field of protective articles, in particular to a protective helmet.

Background

Helmets are protective gear for protecting the head, are caps worn by law enforcement personnel during training and law enforcement, and are indispensable tools in their work. Helmets generally comprise a helmet body for protecting the head from injury by warheads, shrapnel and other hit objects and a protective mask for protecting the face of law enforcement personnel from injury by the warheads, shrapnel and other hit objects, and law enforcement personnel can replace helmets provided with protective masks with different functions according to different tasks when performing different tasks, such as anti-corrosion masks, anti-fog masks or anti-bullet and anti-explosion masks, etc., but most of the existing protective masks are arranged on the top of the helmet through rotating shafts, so that the helmet is inconvenient to detach, and the law enforcement personnel can only replace the masks by replacing the helmets.

The prior art discloses a mine sweeping protective helmet, which comprises a helmet body and a face shield, wherein the face shield is positioned at the front side of the helmet body and comprises double-layer plates, the double-layer plates are integrally formed, and a gap is reserved between the double-layer plates; the helmet body comprises an aramid woven cloth layer and a high-strength high-modulus polyethylene non-woven cloth layer, wherein the aramid woven cloth layer and the high-strength high-modulus polyethylene non-woven cloth layer are pressed together. The weight of the helmet is reduced, and the helmet is more comfortable to wear on the head. But the helmet body and the face guard pivot of this patent are connected and can not dismantle, and law enforcement personnel can only be through changing the helmet that is equipped with different function face guard when carrying out different tasks, realize changing the purpose that has different function face guard, can't realize the nimble application to the face guard.

Disclosure of Invention

The utility model aims to provide a protective helmet with a detachable and easily-detachable protective mask.

In order to achieve the technical purpose, the utility model provides a protective helmet, which comprises a helmet body, a protective mask and a first fixing mechanism, wherein the first fixing mechanism comprises a fixing column, a limiting spring and a limiting block, one end of the fixing column is connected with the protective mask, a groove is formed in one side surface of the fixing column, the limiting block is inserted into the groove, the limiting spring is positioned in the groove, the limiting spring is positioned between the bottom of the groove and the limiting block, one end of the limiting spring is connected with the bottom of the groove, the other end of the limiting spring is connected with the limiting block, the helmet body is provided with a fixing hole and a limiting hole, the fixing hole is communicated with the limiting hole, the fixing column is inserted into the fixing hole, and when the fixing column is inserted into the fixing hole, the limiting block is positioned in the limiting hole.

Further, still include the poking rod, the poking rod is located in the spacing hole, the one end of poking rod is followed spacing hole stretches out to the helmet body outside.

Further, when the limiting block is located in the limiting hole, the length direction of the toggle rod is perpendicular to the extending direction of the limiting spring.

Further, the helmet further comprises a second fixing mechanism, the second fixing mechanism comprises a high-pressure spring and a sliding block, the helmet body is further provided with a sliding hole, the sliding hole is communicated with the fixing hole, the sliding hole is a blind hole, the high-pressure spring and the sliding block are both located inside the sliding hole, the high-pressure spring is located at the bottom of the sliding hole and between the sliding blocks, one end of the high-pressure spring is connected with the bottom of the sliding hole, the other end of the high-pressure spring is connected with the sliding block, and the side surface of the fixing hole, which is communicated with the sliding hole, is opposite to or adjacent to the side surface of the fixing hole, which is communicated with the limiting hole.

Further, the surface of the protective mask is provided with a transparent anti-corrosion material layer.

Further, characterized in that, the helmet body includes shell, inside lining and a plurality of bolster, the inside lining sets up the shell is inboard, the bolster is located the inside lining with between the shell, the one end of bolster with the outer wall connection of inside lining, the other end of bolster with the inner wall connection of shell.

Further, the bolster includes sleeve, damping spring, slide and spliced pole, telescopic one end with the outer wall connection of inside lining, telescopic other end is equipped with the connecting hole, damping spring with the slide all is located inside the sleeve, the one end of spliced pole with the inner wall connection of shell, the other end of spliced pole passes the connecting hole stretches into in the sleeve, the other end of spliced pole with the slide links to each other, damping spring is located telescopic barrel head with between the slide, damping spring's one end with the slide links to each other, damping spring's the other end with telescopic barrel head links to each other.

Further, the inner side or/and the outer side of the lining is/are provided with a buffer cushion and a ventilation layer.

Further, ventilation holes are formed in the front side and the rear side of the shell, and ventilation nets are arranged on the ventilation holes.

Further, the two sides of the bottom of the helmet body are respectively provided with a first binding band and a second binding band, one end of the first binding band is connected with the helmet body, the other end of the first binding band is movably connected with the buckle, one end of the second binding band is connected with the helmet body, the other end of the second binding band is connected with the clamping block, and the clamping block is detachably connected with the buckle.

Compared with the prior art, the beneficial effects of the method are as follows:

according to the utility model, one end of the fixed column of the first fixing mechanism is connected with the protective mask, the limiting block is inserted into the groove on the fixed column, the limiting spring is arranged between the limiting block and the groove bottom of the groove, the fixing hole and the limiting hole communicated with the fixing hole are arranged on the helmet body, when the protective mask is connected with the helmet body, the limiting block is pressed to be completely positioned in the groove, at the moment, the limiting spring is in a compressed state, then the fixed column is inserted into the fixing hole, when the fixed column is inserted into the fixing hole, and when the fixed column moves to the position where the groove is opposite to the limiting hole, the limiting spring is restored, the limiting block is driven to extend out of the groove and be inserted into the limiting hole due to the fact that the limiting block loses the blocking of the hole wall of the fixing hole, so that the protective mask is connected with the helmet body, and when the protective mask is disassembled, a human finger or a rod-shaped object is used to extend into the limiting block to enable the limiting block to be retracted into the groove, meanwhile, the fixed column is moved out of the fixing column, and the protective mask is removed. Therefore, the protective mask is connected with the helmet body through the first fixing mechanism, so that the protective mask is detachable, easy to detach and install and convenient to use. Law enforcement personnel can be according to the task demand, and under the circumstances of not changing helmet body, nimble use is equipped with the protective mask of different functions.

Drawings

Fig. 1 is a schematic structural view of a protective helmet according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of a protective helmet according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

Fig. 4 is a cross-sectional view of a spacing hole according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of a helmet body of an embodiment of the present utility model.

Fig. 6 is an enlarged schematic view of the structure at B in fig. 5.

In the figure, 1, a helmet body; 101. a fixing hole; 102. a limiting hole; 1021. a first bore section; 1022. a second bore section; 103. a slide hole; 104. a housing; 1041. ventilation holes; 1042. a breathable net; 105. a lining; 106. a cushion pad; 107. a ventilation layer; 108. a buffer member; 1081. a sleeve; 1082. a damping spring; 1083. a slide plate; 1084. a connecting column; 2. protective face masks; 3. fixing the column; 4. a groove; 5. a limit spring; 6. a limiting block; 7. a toggle rod; 8. a high-pressure spring; 9. a slide block; 10. a first strap; 11. a buckle; 12. a second strap; 13. and (5) clamping blocks.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Embodiment one:

as shown in fig. 1, fig. 2 and fig. 3, a protective helmet according to a preferred embodiment of the present utility model includes a helmet body 1, a protective mask 2 and a first fixing mechanism, where the first fixing mechanism includes a fixing post 3, a limiting spring 5 and a limiting block 6, one end of the fixing post 3 is connected to the protective mask 2, a side surface of the fixing post 3 is provided with a groove 4, the limiting block 6 is inserted into the groove 4, the limiting spring 5 is located inside the groove 4, and the limiting spring 5 is located between a groove bottom of the groove 4 and the limiting block 6, one end of the limiting spring 5 is connected to a bottom of the groove 4, the other end of the limiting spring 5 is connected to the limiting block 6, the helmet body 1 is provided with a fixing hole 101 and a limiting hole 102, the fixing hole 101 is connected to the limiting hole 102, the fixing post 3 is inserted into the fixing hole 101, and when the fixing post 3 is inserted into the fixing hole 101, the limiting block 6 is located in the limiting hole 102. According to the utility model, one end of the fixed column 3 of the first fixing mechanism is connected with the protective mask 2, the limiting block 6 is inserted into the groove 4 on the fixed column 3, the limiting spring 5 is arranged between the limiting block 6 and the bottom of the groove 4, the fixed hole 101 and the limiting hole 102 communicated with the fixed hole 101 are arranged on the helmet body 1, when the protective mask 2 is connected with the helmet body 1, the limiting block 6 is pressed to be completely positioned in the groove 4, at the moment, the limiting spring 5 is in a compressed state, then the fixed column 3 is inserted into the fixed hole 101, when the fixed column 3 is inserted into the fixed hole 101, and when the fixed column 3 moves to the position where the groove 4 is opposite to the limiting hole 102, the limiting spring 5 is restored due to the blocking of the wall of the fixed hole 101, the limiting block 6 is driven to extend out of the groove 4 and is inserted into the limiting hole 102, so that the protective mask 2 is connected with the helmet body 1, and when the limiting block 6 is positioned in the limiting hole 102, the protective mask 2 is not dropped, and when the protective mask 2 is disassembled, a human finger or a rod stretches into the limiting block 6 to press the limiting block 6, and the fixed column 2 is removed from the fixed column 3, and the protective mask 2 is removed from the fixed column 2. Therefore, the protective mask 2 is connected with the helmet body 1 through the first fixing mechanism, so that the protective mask 2 is detachable, easy to detach and install and convenient to use. The law enforcement personnel can flexibly use the protective mask 2 provided with different functions without changing the helmet body 1 according to task requirements.

Generally, the depth of the groove 4 is greater than the sum of the height of the limiting block 6 and the height compressed by the limiting spring 5, so that the limiting block 6 can be completely pressed into the groove 4, when the limiting block 6 is positioned in the groove 4, the fixing column 3 can move in the fixing hole 101, the situation that the fixing column 3 cannot be inserted into the fixing hole 101 or cannot be pulled out after the fixing column 3 is inserted into the fixing hole 101 is avoided, the depth of the groove 4 is smaller than the sum of the height of the limiting block 6 and the height of the steady state of the limiting spring 5, after the fixing block is inserted into the fixing hole 101, the limiting block 6 can be ejected from the groove 4 and is inserted into the limiting hole 102, the depth of the groove 4 is greater than the steady state height of the limiting spring 5, the limiting block 6 can be inserted into the groove 4, one end, close to the groove bottom of the groove 4, of the limiting block 6 is positioned in the groove 4, and when the fixing column 3 is inserted into the fixing hole 101, the limiting block 6 is positioned in the limiting hole 102, the helmet 6 is simultaneously inserted into the groove 4 and the limiting hole 102, the protective mask 2 is fixed on the protective mask body 1, the situation that the limiting block 6 is completely positioned in the limiting hole 102, and the orifice of the limiting spring 5 is only, and the protective mask 2 cannot be fixed on the protective mask 1. In this embodiment, the left and right sides of the protective mask 2 are respectively provided with a first fixing mechanism, the left and right sides of the helmet body 1 are respectively provided with a fixing hole 101 and a limiting hole 102, and the fixing holes 101 are disposed at the left and right edges of the helmet body 1 (i.e. the connection part between the outer shell 104 and the inner liner 105 of the helmet).

Further, still include the poke rod 7, poke rod 7 is located spacing hole 102, and the one end of poke rod 7 stretches out to helmet body 1 outside from spacing hole 102. When the protective mask 2 is removed, a user presses the limiting block 6 through the poking rod 7 to enable the limiting block 6 to be completely located in the groove 4, and simultaneously moves the fixed column 3 towards the orifice direction of the fixed hole 101, the fixed column 3 is pulled out of the fixed hole 101, one end of the poking rod 7 extends to the outer side of the helmet body 1 from an orifice which is not communicated with the fixed hole 101, the other end of the poking rod 7 is located in the limiting hole 102, and when the limiting block 6 is located in the limiting hole 102, the other end of the poking rod 7 abuts against the surface, away from the groove bottom of the groove 4, of the limiting block 6. The poking rod 7 can enable the protective mask 2 to be detached more easily, so that the problems that the limiting holes 102 are too large or the limiting holes 102 are too deep to be arranged in the openings which are not communicated with the fixing holes 101 and the fingers are difficult to insert because the limiting blocks 6 are needed to be pressed manually are avoided, and the problems that the limiting holes 102 are not communicated with the fixing holes 101, the fingers of some users are difficult to insert and the limiting blocks 6 cannot be pressed because the widths of the fingers of the users are different are also avoided. In general, the limiting hole 102 is a through hole, and the length direction of the toggle rod 7 is parallel to the expansion and contraction direction of the limiting spring 5.

Further, when the limiting block 6 is located in the limiting hole 102, the length direction of the toggle rod 7 is perpendicular to the extending direction of the limiting spring 5. In this embodiment, as shown in fig. 4, the limiting hole 102 includes a first hole section 1021 and a second hole section 1022 which are communicated, and the aperture of the first hole section 1021 is larger than that of the second hole section 1022, so that the cross section of the limiting hole 102 is in a convex shape, the first hole section 1021 and the second hole section 1022 are both communicated with the fixing hole 101, and the aperture of the second hole section 1022 is arranged on the helmet body 1. The poking rod 7 is located in the second hole section 1022, one end of the poking rod 7 stretches into the first hole section 1021, and the other end stretches out of the helmet body 1 through an orifice formed in the helmet body 1 through the second hole section 1022. In general, the connection point of one end of the fixed post 3 and the protective mask 2 is located at the upper ends of the left side and the right side of the protective mask 2, so when the limiting block 6 is located at the limiting hole 102, the distance between the bottom end of the limiting block 6 and the bottom end of the helmet body 1 is far, the limiting hole 102 is a through hole, the length direction of the poking rod 7 is parallel to the extending direction of the limiting spring 5, so that the depth of the limiting hole 102 is too deep, the stability of the helmet body 1 is greatly influenced, the length direction of the poking rod 7 is perpendicular to the extending direction of the limiting spring 5, the depth of the limiting hole 102 can be reduced, the stability of the helmet body 1 is improved, in this embodiment, the orifice of the second hole section 1022 is arranged at the connection part of the shell 104 and the liner 105 which can be simultaneously arranged on the helmet body 1 with the fixing hole 101, the protective performance of the helmet caused by opening on the helmet shell 104 can be further reduced, and the protective performance of the protective helmet is improved.

Further, the surface of the protective mask 2 is provided with a transparent anti-corrosion material layer, so that the protective mask 2 can prevent the face from being injured by corrosive dangerous materials without affecting the line of sight of the user.

Embodiment two:

the difference between the first embodiment and the second embodiment is that, based on the first embodiment, the protective helmet of the first embodiment further includes a second fixing mechanism.

As shown in fig. 3, the second fixing mechanism includes a high-pressure spring 8 and a slide block 9, the helmet body 1 is further provided with a slide hole 103, the slide hole 103 is communicated with a fixing hole 101, the slide hole 103 is a blind hole, the high-pressure spring 8 and the slide block 9 are both located inside the slide hole 103, the high-pressure spring 8 is located between the bottom of the slide hole 103 and the slide block 9, one end of the high-pressure spring 8 is connected with the bottom of the slide hole 103, the other end of the high-pressure spring 8 is connected with the slide block 9, and a side surface of the fixing hole 101 communicated with the slide hole 103 is opposite to or adjacent to a side surface of the fixing hole 101 communicated with a limiting hole 102. Generally, the depth of the sliding hole 103 is larger than the sum of the height of the sliding block 9 and the compressed height of the limiting spring 5, so that the second sliding hole can be completely pressed into the sliding hole 103, the fixed column 3 can move in the fixed hole 101, the situation that the fixed column 3 cannot be inserted into the fixed hole 101 is avoided, the depth of the sliding hole 103 is smaller than the sum of the height of the sliding block 9 and the steady-state height of the high-pressure spring 8, and the high-pressure spring 8 can release elastic potential energy after the fixed block is inserted into the fixed hole 101, so that the sliding block 9 can be propped against the fixed column 3 and compress the fixed column 3. In this embodiment, the side that fixed orifices 101 and slide orifices 103 are linked together is opposite to the side that fixed orifices 101 and spacing hole 102 are linked together for the second fixed establishment can compress tightly fixed column 3 and stopper 6 better, makes the side that fixed column 3 and fixed orifices 101 and spacing hole 102 are linked together offset, and stopper 6 can not lead to stopper 6 and spacing hole 102 to break away from because of the motion of user when wearing the helmet, has further ensured the fastness that detachable protective mask 2 helmet body 1 connects.

Preferably, one end of the sliding block 9, which is close to the fixing hole 101, is in a wedge-shaped structure, so that the fixing column 3 slides along a wedge-shaped inclined plane of the sliding block 9 in the process of inserting the fixing column 3 into the fixing hole 101, and the sliding block 9 is jacked up, so that the fixing column 3 is easy to insert into the fixing hole 101.

Embodiment III:

the present embodiment differs from the first embodiment in that the present embodiment further describes the helmet body 1 on the basis of the first embodiment.

As shown in fig. 4 and 5, the helmet body 1 includes an outer shell 104, an inner liner 105 and a plurality of buffering members 108, the inner liner 105 is disposed inside the outer shell 104, the buffering members 108 are disposed between the inner liner 105 and the outer shell 104, one end of each buffering member 108 is connected with an outer wall of the inner liner 105, and the other end of each buffering member 108 is connected with an inner wall of the outer shell 104. The buffer member 108 can effectively reduce the impact shock force of the external impact suffered by the helmet body 1 to the inner liner 105, and effectively increase the protection degree. In this embodiment, the plurality of cushioning members 108 are uniformly distributed between the inner side of the helmet body 1 and the outer shell 104, when the outer shell 104 of the helmet is impacted or impacted, first, the force is transmitted to the plurality of cushioning members 108 through the outer shell 104, the force received by each cushioning member 108 is far smaller than the impact force received by the outer shell 104 of the helmet, and the cushioning members 108 can slow down the impact force received by the outer shell 104 and transmit the smaller impact force to the lining 105 of the helmet, therefore, the stress area of the lining 105 is larger than the stress area of the outer shell 104, the force received by the lining 105 is smaller than the force received by the outer shell 104 of the helmet, therefore, the pressure received by the lining 105 is far smaller than the pressure received by the outer shell 104 of the helmet, the head of the wearer is in direct contact with the lining 105, the impact force and the pressure received by the outer shell 104 of the helmet are transmitted to the head of the wearer, the wearer can be effectively protected, and the wearer is prevented from being injured.

Further, the cushioning member 108 includes a sleeve 1081, a damper spring 1082, a slide 1083 and a connection post 1084, wherein one end of the sleeve 1081 is connected with the outer wall of the liner 105, the other end of the sleeve 1081 is provided with a connection hole, the damper spring 1082 and the slide 1083 are both located inside the sleeve 1081, one end of the connection post 1084 is connected with the inner wall of the housing 104, the other end of the connection post 1084 extends into the sleeve 1081 through the connection hole, the other end of the connection post 1084 is connected with the slide 1083, the damper spring 1082 is located between the bottom of the sleeve 1081 and the slide 1083, one end of the damper spring 1082 is connected with the slide 1083, and the other end of the damper spring 1082 is connected with the bottom of the sleeve 1081. In this embodiment, when the shell 104 of the helmet is impacted or impacted, first, the force is transmitted to the plurality of connection columns 1084 through the shell 104, the connection columns 1084 press the damping springs 1082 through the sliding plate 1083, so that the damping springs 1082 accumulate elastic potential energy, and when the impact is over, the damping springs 1082 release the elastic potential energy, and push the sliding plate 1083 to move toward the connection hole and push the inner liner 105 through the sleeve 1081 inwards, so that the total force applied to the inner liner 105 is about half of the impact force. In addition, since the impulse is equal to the product of the force and the contact time, the impact force received by the outer shell 104 of the helmet is larger and the impact time is shorter, the impact force received by the inner liner 105 is the impulse of the damping spring 1082 to the inner liner 105, and considering that the release of the elastic potential energy of the damping spring 1082 is uniform and slow, the force received by the inner liner 105 is far smaller than the impact force received by the outer shell 104, and the stress area of the inner liner 105 is larger than the stress area of the outer shell 104, so that the impact force and the pressure received by the inner liner 105 are far smaller than the impact received by the outer shell 104 of the helmet are transmitted to the head of a wearer, the wearer can be more effectively protected, and the wearer is prevented from being injured.

Further, the inner side or/and the outer side of the inner liner 105 is provided with a cushion 106 and a ventilation layer 107. The inner liner 105 is provided with a cushion pad 106, and the cushion pad 106 is made of polystyrene foam materials, so that the comfort of the helmet when the helmet is worn can be improved, the buffering force is further increased, and the inner liner 105 is also provided with a ventilation layer 107, so that the comfort of the helmet when the helmet is worn can be improved. The cushion 106 and the ventilation layer 107 may each be disposed on the inside or outside of the liner 105. In this embodiment, the ventilation layer 107, the cushion pad 106 and the inner liner 105 are sequentially disposed from inside to outside, so that the comfort of the helmet when worn can be improved to the maximum and the buffering power can be further increased.

Further, the ventilation holes 1041 are formed in the front side and the rear side of the outer shell 104, the ventilation holes 1041 are provided with ventilation nets 1042, the front ventilation holes 1041 and the rear ventilation holes 1041 can enable air flow to penetrate through the whole helmet, comfort of the helmet during wearing is improved, sundries can be prevented from entering the helmet through the ventilation nets 1042, and safety of the helmet is improved while comfort of the helmet during wearing is improved.

Preferably, the upper side of the shell 104 is provided with pressure reducing holes, and the pressure reducing holes are symmetrically distributed with two groups of pressure reducing holes about the vertical center line of the shell 104, so that the pressure applied to the helmet shell 104 can be further reduced, and the safety of the helmet is improved.

Further, as shown in fig. 1, two sides of the bottom of the helmet body 1 are respectively provided with a first strap 10 and a second strap 12, one end of the first strap 10 is connected with the helmet body 1, the other end of the first strap 10 is movably connected with the buckle 11, one end of the second strap 12 is connected with the helmet body 1, the other end of the second strap 12 is connected with the clamping block 13, the clamping block 13 is detachably connected with the buckle 11, after the user wears the helmet and connects the clamping block 13 with the buckle 11, the first strap 10 and the second strap 12 are fixed at the mandible of the user, so that the helmet can be prevented from falling off to enable the user to lose protection.

The working process of the utility model is as follows:

law enforcement personnel select the face guard 2 that is equipped with certain function according to the task demand, when needs installation, insert fixed column 3 not with the continuous one end of face guard 2 fixed orifices 101, preferably, insert fixed column 3 slope fixed orifices 101, make the side arris of fixed column 3 offset with the wedge structure of slider 9, apply external force to face guard 2, make the in-process that fixed column 3 inserted fixed orifices 101, fixed column 3 slides along the wedge inclined plane of slider 9, jack-up slider 9, high-pressure spring 8 is in compressed state this moment, until the side of recess 4 of fixed column 3 contacts with the drill way of fixed orifices 101, press stopper 6 makes stopper 6 be located recess 4 completely, at this moment spacing spring 5 is in compressed state, then insert fixed column 3 in fixed orifices 101, when fixed column 3 inserts fixed orifices 101, when fixed column 3 moves to its recess 4 and spacing holes 102 looks, because stopper 6 loses the blocking of the pore wall of fixed orifices 101, spacing spring 5 resumes, drive stopper 6 stretches out and inserts in spacing holes 102 from recess 4, realize that face guard 2 and helmet 1 promotes, simultaneously, high-pressure spring 8 makes stopper 6 be located recess 4 and compressed state this moment, can not be in the side face guard 3, and make stopper 3 and 3 can be compressed when using the fixed column 3 to make the side of fixed column 3 to be connected with the fixed column 101. When the protective mask 2 is disassembled, the poking rod 7 stretches into the limiting hole 102 to press the limiting block 6, so that the limiting block 6 is retracted into the groove 4, the protective mask 2 is moved, the fixing column 3 is withdrawn from the fixing hole 101, and the protective mask 2 is disassembled.

In summary, the embodiment of the utility model provides a protective helmet, wherein one end of a fixing column 3 of a first fixing mechanism is connected with a protective mask 2, a limiting block 6 is inserted into a groove 4 on the fixing column 3, a limiting spring 5 is arranged between the limiting block 6 and the bottom of the groove 4, and a fixing hole 101 and a limiting hole 102 communicated with the fixing hole 101 are arranged on a helmet body 1. The protective mask 2 is connected with the helmet body 1 through the first fixing mechanism, so that the protective mask 2 is detachable and easy to detach and install, the use is convenient, and law enforcement personnel can flexibly use the protective mask 2 with different functions according to task requirements without replacing the helmet body 1.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. The utility model provides a protective helmet, includes helmet body (1) and protective face guard (2), its characterized in that still includes a fixed establishment, a fixed establishment includes fixed column (3), spacing spring (5) and stopper (6), the one end of fixed column (3) with protective face guard (2) link to each other, a side of fixed column (3) is equipped with recess (4), stopper (6) peg graft in recess (4), spacing spring (5) are located inside recess (4), just spacing spring (5) are located the tank bottom of recess (4) with between stopper (6), the one end of spacing spring (5) with the bottom of recess (4) links to each other, the other end of spacing spring (5) with stopper (6) link to each other, helmet body (1) are equipped with fixed orifices (101) and spacing hole (102), fixed orifices (101) with spacing hole (102) are linked together, fixed column (3) in fixed orifices (101) and in when fixed column (101) are located in spacing hole (101).

2. The protective helmet according to claim 1, further comprising a tap lever (7), the tap lever (7) being located in the limiting aperture (102), one end of the tap lever (7) protruding from the limiting aperture (102) to the outside of the helmet body (1).

3. Protective helmet according to claim 2, characterized in that the length direction of the tap lever (7) is perpendicular to the telescoping direction of the limit spring (5) when the limit block (6) is located in the limit hole (102).

4. A protective helmet according to claim 3, further comprising a second fixing mechanism comprising a high-pressure spring (8) and a slider (9), wherein the helmet body is further provided with a slide hole (103), the slide hole (103) is communicated with the fixing hole (101), the slide hole (103) is a blind hole, the high-pressure spring (8) and the slider (9) are both located inside the slide hole (103), the high-pressure spring (8) is located between the bottom of the slide hole (103) and the slider (9), one end of the high-pressure spring (8) is connected with the bottom of the slide hole (103), the other end of the high-pressure spring (8) is connected with the slider (9), and the side surface of the fixing hole (101) communicated with the slide hole (103) is opposite to or adjacent to the side surface of the fixing hole (101) communicated with the limiting hole (102).

5. Protective helmet according to claim 1, characterized in that the surface of the protective face mask (2) is provided with a transparent layer of anti-corrosion material.

6. Protective helmet according to claim 1, characterized in that the helmet body (1) comprises an outer shell (104), a lining (105) and several buffers (108), the lining (105) being arranged inside the outer shell (104), the buffers (108) being located between the lining (105) and the outer shell (104), one end of the buffers (108) being connected to the outer wall of the lining (105), the other end of the buffers (108) being connected to the inner wall of the outer shell (104).

7. The protective helmet according to claim 6, wherein the buffer member (108) comprises a sleeve (1081), a shock-absorbing spring (1082), a sliding plate (1083) and a connecting post (1084), one end of the sleeve (1081) is connected with the outer wall of the inner liner (105), the other end of the sleeve (1081) is provided with a connecting hole, the shock-absorbing spring (1082) and the sliding plate (1083) are both located inside the sleeve (1081), one end of the connecting post (1084) is connected with the inner wall of the outer shell (104), the other end of the connecting post (1084) penetrates through the connecting hole and extends into the sleeve (1081), the other end of the connecting post (1084) is connected with the sliding plate (1083), the shock-absorbing spring (1082) is located between the bottom of the sleeve (1081) and the sliding plate (1083), one end of the shock-absorbing spring (1082) is connected with the sliding plate (1083), and the other end of the shock-absorbing spring (1082) is connected with the bottom of the sleeve (1081).

8. Protective helmet according to claim 6, characterized in that the inner side or/and the outer side of the lining (105) is provided with a cushion (106) and a ventilation layer (107).

9. The protective helmet according to claim 6, wherein ventilation holes (1041) are formed in the front and rear sides of the outer shell (104), and ventilation nets (1042) are formed on the ventilation holes (1041).

10. The protective helmet according to claim 1, wherein two sides of the bottom of the helmet body (1) are respectively provided with a first binding band (10) and a second binding band (12), one end of the first binding band (10) is connected with the helmet body (1), the other end of the first binding band (10) is movably connected with a buckle (11), one end of the second binding band (12) is connected with the helmet body (1), the other end of the second binding band (12) is connected with a clamping block (13), and the clamping block (13) is detachably connected with the buckle (11).