CN209628717U - A kind of crash helmet - Google Patents

Abstract

The utility model discloses a kind of crash helmets, including helmet shell, mask, blower, wind speed sensing device and battery, the front of helmet shell is arranged in mask, mask can cover on human body face and and human body face formation breathing area, blower is arranged in helmet shell, filter is provided on the air intake of blower, the outlet air end of blower is connected to breathing area, outside air can be sent into breathing area after filter filters by blower, wind speed sensing device is arranged on outlet air end and is connected with alarm device, when the wind speed of outlet air end is lower than preset value, trigger alarm, the first slot is offered on helmet shell, battery is plugged in the first slot, extract battery, battery and blower, wind speed sensing device and alarm device disconnect.Wind speed sensing device can real-time monitoring outlet air end air velocity, realized by way of plug fast assembling-disassembling battery to solve the problems, such as battery capacity deficiency, therefore the utility model have the advantages that security protection in place, battery disassembly and assembly it is convenient and efficient.

Description

A kind of crash helmet

Technical field

The utility model belongs to appliances for labor protection, refers in particular to a kind of crash helmet.

Background technique

Crash helmet is a kind of appliances for labor protection, it includes helmet shell, and helmet shell is hollow shell, for being worn on human body head On, it plays and protective action is played to human body head, for suitable for using under some special occasions, crash helmet further includes ventilation blower Structure, ventilating mechanisms include the mask, blower, filter being sequentially communicated, and helmet shell ontology are worn on head, mask can cover on people The face of body and the face of human body form breathing area, start blower, and outside air is flowed into mask, and outside air passes through Filter filtering enters back into mask (breathing area).

However in the prior art, there are situations such as battery capacity deficiency, plugged filter when crash helmet works to cause wind The problem of machine air-supply wind speed reduces, but crash helmet lacks necessary early warning mechanism, can not find asking for wind speed reduction in time Topic, can not timely remover apparatus problem after discovery.

Utility model content

In order to overcome the deficiencies of the prior art and there are the problem of, the utility model provide one kind can source of early warning failure, peace Full protection in place with battery disassembly and assembly conveniently crash helmet.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of crash helmet, comprising:

Helmet shell, is intended to be worn on human body head；

The front of helmet shell is arranged in mask, mask, and mask can cover on human body face and the human body face formation respiratory region and Domain；

Blower, blower is arranged in helmet shell, including air intake and outlet air end, is provided with filter, air intake on air intake Connection is extraneous, and outlet air end is connected to breathing area, and outside air can be sent into breathing area after filter filters by blower；

Wind speed sensing device, wind speed sensing device are arranged on outlet air end, and wind speed sensing device is connected with alarm device, works as wind Fast sensing device senses that the wind speed of outlet air end lower than preset value, triggers alarm；

Battery offers the first slot on helmet shell, and battery is plugged in the first slot, and with blower, wind speed sensing device It is electrically connected with alarm device, extracts battery, battery is disconnected with blower, wind speed sensing device and alarm device.

Preferably, the mask is hinged on the lower end of helmet shell, mask is swung, mask can be drawn close on helmet shell or from helmet shell Upper expansion.

Preferably, being provided with the first elastic component between the helmet shell and mask, the first elastic component forces mask to helmet shell On draw close.

Preferably, be provided with hook on the mask, when mask is unfolded from helmet shell, hook can be resisted against on helmet shell from And limit the expanded angle of mask.

Preferably, the wind speed sensing device includes valve seat, it is fixedly installed on valve seat close to switch, is connected close to switch Alarm device is connect, Self-resetting component is movably set on valve seat, the air-flow of outlet air end can drive Self-resetting component mobile, work as outlet air end Wind speed be lower than preset value, Self-resetting component be moved to close to switch induction zone in, close to switch triggering alarm device.

Preferably, the Self-resetting component includes valve deck, valve deck is rotatably arranged on valve seat, is fixedly installed on valve deck Can trigger the trigger close to switch, the air-flow actuatable valve lid of outlet air end is rotated up, when the air-flow of outlet air end becomes smaller, valve deck It rotates down under the effect of gravity and to close close to switching.

Preferably, further including earmuff, earmuff includes cam, and cam is attached on the helmet, and arm is hinged on cam, arm Lower end is attached with cover, and driven member is movably set on arm, and the second elastic component, the second elastic component are provided between arm and driven member It forces driven member to be connected on cam, first position and middle position is provided on driven member, when the rotation of arm opposing cam, cam It can be moved between first position and middle position, and cam driven driven member moves on arm, the second elastic component forces convex It takes turns mobile to first position.

Preferably, being additionally provided with the second position on the driven member, middle position is arranged in first position and second Between setting, when arm opposing cam rotates, cam can move between middle position and the second position, and cam driven driven member It is moved on arm, the second elastic component forces cam mobile to the second position.

Preferably, cover is in the moving position for being covered on user ear when cam is moved to first position, when When cam is moved to the second position, cover is in the spare space far from user ear.

Preferably, the blower is arranged in helmet shell, the back of helmet shell offers the air intake duct of connection air intake, filtering Device is detachably arranged in air intake duct, is provided with discharge pipe in helmet shell, and one end of discharge pipe connects outlet air end, discharge pipe it is another Breathing area is protruded at end, and the upper end of helmet shell offers ventilation mouth.

Compared with the prior art, the utility model has prominent and beneficial technical effects that:

(1) in the utility model, when using the safety helmet, wind speed sensing device can real-time monitoring outlet air end gas velocity Degree, when occur blower work low abnormal, battery capacity and plugged filter the problems such as cause the air velocity of outlet air end to reduce, Wind speed sensing device by monitoring outlet air end air velocity can intuitively react be sent into breathing area air velocity whether On preset value, wind speed sensing device is connected with alarm device, and when the wind speed of outlet air end is lower than preset value, wind speed sensing device can Alarm device is triggered, is timely feedbacked by alarm to user, user is reminded to withdraw danger zone and in time row in time Except plant issue, therefore the safety helmet has the advantages that security protection in place.

(2) in the utility model, dismounting cell is realized by way of plug, is not necessarily to tool, it is manually i.e. quick disassembled and fast Packed battery.When battery capacity is insufficient or is finished, battery can be extracted, another fully charged battery be replaced, thus safety The helmet can continue working, compared to the prior art, battery can the structure of plug have battery removable, convenient for disassembly and assembly fast The advantages of prompt, compact-sized, easy to use and sustainable work.

(3) in the utility model, mask is drawn close on helmet shell, and mask is also just drawn close to human body face, and mask can be closely It covers on human body face, can be fitted on human body face well hence for the user of different shapes of face, breathing area It is outstanding with extraneous partition effect, mask is unfolded from helmet shell, mask also will far from human body face, facilitate helmet shell and Mask is taken off from human body head, and compared to the prior art, the mask of the safety helmet can be drawn close to human body face, and mask can With closer to human body face, thus the safety helmet have the advantages that separate effect it is good, easy to wear and applied widely.

(4) in the utility model, it is provided with hook on the mask, when mask is unfolded from helmet shell, hook can be resisted against The expanded angle of mask is limited on helmet shell, therefore swings mask, and mask is resisted against position and the card of helmet shell lower end in mask It hooks and is swung between the position being resisted against on helmet shell.Mask is unfolded outward with hand, hook is resisted against on helmet shell, can be taken advantage of a situation and be driven helmet shell Helmet shell is taken off from human body head, therefore the structure of hook further facilitates helmet shell and mask is taken from human body head Come.

(5) in the utility model, during the rotation of arm opposing cam, driven member is mobile on arm to cause the second elasticity Part generates elastic deformation, and after removing external force, since cam is at first position, the second elastic component elastic potential energy is lower, the second bullet Property part be intended to discharge elastic potential energy, driven member band moving cam opposing arms rotates under the action of the second elastic component, and cam returns to First position, therefore cover and user ear can be maintained at suitable distance, this covers on user ear apart from lower cover And moderate pressure is kept, therefore this earmuff has the advantages that facilitate that wearing, soundproof effect be good, wearing comfort.

(6) in the utility model, when cam moves between first position and middle position, external force is removed, cam is removable First position is moved go back to, when cam moves between the second position and middle position, removes external force, cam moves back second It sets, therefore cam can be maintained in multiple angles relative to arm and position, the earmuff on arm can be maintained at multiple with user ear Apart from upper, multiple distances can allow cover to cover on user ear or far from user ear.

(7) in the utility model, the upper end of helmet shell offers ventilation mouth, and when user dresses helmet shell, ventilation mouth is by human body Head is connected to the external world, and ventilation mouth plays purpose that is ventilative, perspiring, and when blower work, the extra sky of breathing area inner part Gas is discharged from the upper end of mask, which brushed the sweat that human body head is discharged from ventilation mouth and takes away human body head Water, feeling of oppression and heat can also be generated to avoid human body head by dressing the safety helmet for a long time, therefore have the advantages that wearing comfort.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model；

Fig. 2 is one of the structural schematic diagram under the opening state of the utility model；

Fig. 3 is the second structural representation under the opening state of the utility model；

Fig. 4 is one of configuration schematic diagram of the utility model；

Fig. 5 is the schematic diagram of the section structure of the utility model；

Fig. 6 is the enlarged structure schematic diagram in Fig. 5 of the utility model at " A "；

Fig. 7 is the enlarged structure schematic diagram in Fig. 5 of the utility model at " B "；

Fig. 8 is the structural schematic diagram of wind speed sensing device in the utility model；

Fig. 9 is the configuration schematic diagram of earmuff in the utility model；

Figure 10 is one of the schematic diagram of internal structure of earmuff in the utility model；

Figure 11 is two of the schematic diagram of internal structure of earmuff in the utility model；

Figure 12 is three of the schematic diagram of internal structure of earmuff in the utility model；

Figure 13 is the third structural representation under the opening state of the utility model；

Figure 14 is the two of the configuration schematic diagram of the utility model；

In figure: 1- helmet shell, 2- mask, 3- blower, 4- filter, 5- wind speed sensing device, 6- battery, 7- earmuff, 8- go out Air hose, 9- circuit control panel, the first elastic component of 10-, 11- cage, 12- inlet shell, 13- outlet air cap, 14- front shell cover, 15- Hat lining, 16- lampshade cap, 17- connector, 18- vent flap, the first slot of 19-, 21- translucent cover, 22- rotating turret, 23- bullet Property surrounding edge, 24- first rotating shaft, 31- air intake, 32- outlet air end, 51- valve seat, 52- close to switch, the second shaft of 53-, 54- oneself Reset components, 55- alarm device, the second connecting terminal of 61-, 71- cover, 72- arm, 73- cam, 74- driven member, the second bullet of 75- Property part, 76- ball cup, 77- third shaft, 111-, 112- card hole, 121- air intake duct, 131- through-hole, the second hinged seat of 132-, 133- assembling stand, 134- ventilation mouth, the first connecting terminal of 171-, 181- sieve pore, 221- hook, the first hinged seat of 222-, 231- Ventilating groove, 541- valve deck, 542- trigger, 711- ballhead, 721- first shell, 722- second shell, 723- first sliding groove, 724- Second sliding slot, 725- retention bead, 726- rack gear, 731- plug, the first Elastic buckle of 732-, 741- limit hole, 761- second Elastic buckle, 91- power switch, 92- headlamp.

Specific embodiment

For the ease of the understanding of those skilled in the art, in the following with reference to the drawings and specific embodiments to the utility model make into The description of one step.

As shown in figs. 1 to 14, a kind of crash helmet is designed to wear for user, net for providing to user Change air and protects the work safety of user.The crash helmet includes helmet shell 1, and 1 overall structure of helmet shell is in hollow shell, helmet Shell 1 may be worn on human body head, and hat lining 15 is equipped in helmet shell 1, and hat lining 15 is the component directly contacted with human body head, cap Lining 15 is adjustable size, and when user puts on hat lining 15, by adjusting hat lining 15, hat lining 15 can be fastened on human body head On, therefore the appropriate degree and comfort of wearing can be improved in hat lining 15, when dressing this helmet, by headward impact When, helmet shell 1 is absorbable and dispersion is towards impact, and helmet shell 1 is made of engineering plastics, and size is according to human head shapes peace Equal size design, rigidity meet the related shock resistance standard of country.

The safety helmet further includes mask 2, and the front of helmet shell 1 is arranged in mask 2, and mask 2 can cover on human body face simultaneously Breathing area is formed with human body face, and mask 2 is designed to can to cover on the shape of the entire face of wearer, and mask 2 is from helmet shell 1 Front, which extends downwardly, to be covered on human body face (including from forehead to the region between chin and eyes exterior angle), thus and Human body face is formed independently of extraneous breathing area,；In addition the air filtering of crossing of 2 pairs of mask feeding breathing areas plays drainage Effect, the air filtering excessively that mask 2 will be fed into are guided from the forehead of user to the chin of user, cheek.

The safety helmet further includes blower 3, and blower 3 is arranged using radial-flow type mini fan 3, blower 3 in helmet shell 1 Interior, blower 3 includes air intake 31 and outlet air end 32, and air intake 31 is connected to the external world, filter 4 is provided on air intake 31, extraneous Air flows to air intake 31 and first passes through the filtering of filter 4, and filter 4 can be filtered bacterium, virus, exhaust gas and dust, To the filter efficiency of bacterium, virus 99.99% or more, environment (in air suspended particulate of the service life in slight pollution Concentration is about 3 × 10⁵A/L) under work and be 7 years or more, in the environment (concentration of suspended particulate in air of serious pollution About 10⁹A/L) the lower service life can also be more than half a year.Outlet air end 32 is connected to breathing area, and blower 3 can pass through outside air Filter 4 is sent into breathing area after filtering.

When work, the air velocity of breathing area is sent into preferably in 0.28m/s between 0.3m/s, so that user is exhaling Region internal respiration is inhaled while arrived air filtering, maintains the barotropic state of breathing area, avoids extraneous unfiltered air from saturating Gap enters breathing area between air drain 231, mask 2 and human body face, and furthermore the air-flow of the speed is directly blown in mask 2 On, avoid human body respiration from generating fog on mask 2, nor it is uncomfortable that user can be caused to breathe, in the band of air-flow Under dynamic, the air in breathing area is flowing, and user can experience the nice and cool of face, thus be conducive to breathe it is smooth and Breathing safety.

The safety helmet further includes wind speed sensing device 5, and wind speed sensing device 5 is arranged on outlet air end 32, wind speed induction Device 5 can incude the air-flow size of outlet air end 32, and wind speed sensing device 5 is connected with alarm device 55, when wind speed sensing device 5 incudes Wind speed to outlet air end 32 is lower than preset value, and preset value is typically chosen as 0.28m/s, triggers 55 alarm of alarm device.

When using the safety helmet, wind speed sensing device 5 can real-time monitoring outlet air end 32 air velocity, when there is blower The problems such as 3 work are abnormal, 6 electricity of battery is low and filter 4 blocks causes the air velocity of outlet air end 32 to reduce, wind speed induction Whether device 5 can intuitively react the air velocity for being sent into breathing area by the air velocity of monitoring outlet air end 32 default On value, wind speed sensing device 5 is connected with alarm device 55, and when the wind speed of outlet air end 32 is lower than preset value, wind speed sensing device 5 can Trigger alarm device 55, timely feedbacked by 55 alarm of alarm device to user, remind user withdraw in time danger zone and and When remover apparatus problem, therefore the safety helmet has the advantages that security protection in place.

The safety helmet further includes battery 6, battery 6 using repeatable charging lithium battery 6, therefore have compact, The advantages of electric discharge is gentle, energy ratio is high and long service life.The first slot 19, the opening of the first slot 19 are offered on helmet shell 1 Upward, battery 6 is plugged in the first slot 19, and is electrically connected with blower 3, wind speed sensing device 5, alarm device 55, thus electric Pond 6 can power to blower 3, wind speed sensing device 5 and alarm device 55, extract battery 6, battery 6 and blower 3, wind speed sensing device 5 It is disconnected with alarm device 55, dismounting cell 6 is realized by way of plug, be not necessarily to tool, manually i.e. quick disassembled and fast-assembling electricity Pond 6.When 6 not enough power supply of battery or when being finished, battery 6 can be extracted, another fully charged battery 6 be replaced, thus safety The helmet can continue working, compared to the prior art, battery 6 can the structure of plug have battery 6 removable, convenient for disassembly and assembly fast The advantages of prompt, compact-sized, easy to use and sustainable work.

Connector 17 is fixedly installed in first slot 19, connector 17 is used for transmission electric current, and connector 17 is electrically connected Blower 3, wind speed sensing device 5 and alarm device 55, when battery 6 is plugged in the first slot 19, battery 6 and connector 17 electrically connect It is connected together, in addition, connector 17 is in the first slot 19, the helmet has the connection structure of battery 6 and connector 17 Certain partition effect, increases electric clearance and creepage distance, improves insulation performance, avoid getting an electric shock.

Connector 17 includes the first connecting terminal 171, and the first connecting terminal 171 is a pair, respectively as positive and negative anodes, battery 6 include the second connecting terminal 61 corresponding to the first connecting terminal 171, and the second connecting terminal 61 is also a pair, when battery 6 is inserted into In first slot 19, the first connecting terminal 171 is contradicted respectively on the second connecting terminal 61, and battery 6 is electrically connected blower 3, wind Fast sensing device 5 and alarm device 55.

First connecting terminal 171 can be elastomer, when the first connecting terminal 171 contradict on the second connecting terminal 61, First connecting terminal 171 generates elastic deformation and battery 6 is pushed against in the first slot 19, avoids 171 He of the first connecting terminal The poor contact of second connecting terminal 61, and battery 6 is avoided to loosen in the first slot 19.

The front of helmet shell 1 is provided with circuit control panel 9, and connector 17, blower 3, wind speed sensing device 5 and alarm device 55 divide Be not connected on circuit control panel 9, battery 6 by connector 17 connect circuit control panel 9, battery 6 by circuit control panel 9 to Blower 3, wind speed sensing device 5 and alarm device 55 energize, and the front of circuit control panel 9 is provided with power switch 91, power switch 91 are exposed to outside helmet shell 1, therefore convenient for users to pressing when the safe wearing helmet to power switch 91.91 are turned on the power switch, electricity Road control panel 9 controls battery 6 and energizes to blower 3 and wind speed sensing device 5, when wind speed sensing device 5 senses outlet air end 32 Wind speed be lower than preset value, wind speed sensing device 5 to circuit control panel 9 send inductive signal, circuit control panel 9 control battery 6 to Alarm device 55 energizes, and alarm device 55 sounds an alarm, and turns off the power switch 91, battery 6 stops to blower 3,5 and of wind speed sensing device Alarm device 55 energizes.

The mask 2 is hinged on the lower end of helmet shell 1, and mask 2 can swing mask 2, face in the lower end swing of helmet shell 1 Cover 2 can be drawn close on helmet shell 1 or be unfolded from helmet shell 1.Helmet shell 1 is worn on human body head, mask 2 is drawn close on helmet shell 1, Mask 2 is also just drawn close to human body face, and mask 2 can be covered on closely on human body face, hence for the user of different shapes of face It can be fitted on human body face well, breathing area and extraneous partition effect are outstanding, by mask 2 from helmet shell 1 Upper expansion, mask 2 also will facilitate helmet shell 1 and mask 2 to take off from human body head, compared to existing far from human body face The mask 2 of technology, the safety helmet can be drawn close to human body face, and mask 2 can be closer to human body face, therefore safety head Helmet has the advantages that partition effect is good, easy to wear and applied widely.

Mask 2 includes rotating turret 22, translucent cover 21 and elastic surrounding edge 23, the side of 1 front of profile and helmet shell of rotating turret 22 Consistent along profile, the overall structure of rotating turret 22 is in " U " font, and the front end of rotating turret 22 is formed with the first hinged seat 222, helmet shell 1 front is formed with the second hinged seat 132, the first hinged seat 222 and the second hinged seat 132 and is rotatablely connected by first rotating shaft 24 Together, rotating turret 22 is swung, rotating turret 22 can be swung in front below helmet shell 1, and the lower end of rotating turret 22 is fixedly installed Bright cover 21, translucent cover 21 is made of high grade of transparency PVC so that it is convenient to which wearer observes the external world through translucent cover 21.It is transparent The overall structure of cover 21 is in the round and smooth arc shell that can cover on human body face, and flexible surrounding edge is fixedly installed in the edge of translucent cover 21 23, elastic surrounding edge 23 can be used the rubber with elasticity, skin-friendly and be made, and elastic surrounding edge 23 is directly to contact with human body face Component, elastic surrounding edge 23 is when being fitted on human body face, according to the change in shape of human body face at corresponding shape, elasticity Several ventilating grooves 231 are offered on surrounding edge 23, a purpose of ventilating groove 231 is to allow elastic surrounding edge 23 that can generate tool There is bigger deformation range, another object is used to for air extra in breathing area being discharged by ventilating groove 231.

The first elastic component 10 is provided between the helmet shell 1 and mask 2, the first elastic component 10 forces mask 2 on helmet shell 1 Draw close, user dress the safety helmet when, mask 2 since the effect of the first elastic component 10 is tightly attached on human body face automatically, Helmet shell 1 is worn on human body head by user, adjusts hat lining 15, there are problems that number of people head with respect to helmet shell 1 there are deflection, Mask 2 since the effect of the first elastic component 10 can be also fitted on human body face well, mask 2 and human body face Fitting effect is further enhanced.

It is provided with hook 221 on the mask 2, when mask 2 is unfolded from helmet shell 1, hook 221 can be resisted against on helmet shell 1 To limit the expanded angle of mask 2, therefore mask 2 is swung, mask 2 is resisted against position and the hook of 1 lower end of helmet shell in mask 2 It is swung between 221 positions being resisted against on helmet shell 1.Mask 2 is unfolded outward with hand, hook 221 is resisted against on helmet shell 1, can be taken advantage of a situation Drive helmet shell 1 helmet shell 1 is taken off from human body head, therefore the structure of hook 221 further facilitate helmet shell 1 and mask 2 from It is taken off on human body head.

Hook 221 can be a pair, and the overall structure of hook 221 is L-shaped, and a pair of of hook 221 is located at rotating turret 22 two sides, a pair of of hook 221 can be integrally formed with rotating turret 22, and the through-hole 131 corresponding to hook 221 is offered on helmet shell 1, Through-hole 131 is a pair, and hook 221 is each passed through through-hole 131, and hook 221 can move in through-hole 131, and 1 two sides of helmet shell are solid respectively Surely it is provided with assembling stand 133, the first elastic component 10 is a pair, and one end of any first elastic component 10 is connected to corresponding card It hooks on 221, the other end of any first elastic component 10 is connected on corresponding assembling stand 133, after this structure, ensure that The stationarity of the rotation of mask 2, a pair of first elastic component 10 are located at 1 two sides of helmet shell, ensure that the action direction and mask 2 of elastic force Swaying direction it is consistent.Farther out, therefore the first elastic component 10 acts on mask 2 for front of first elastic component 10 apart from mask 2 Upper producible torque is larger, therefore avoids mask 2 and be attached to generate on human body face and loosen.

As shown in fig. 6, the wind speed sensing device 5 includes valve seat 51, it is fixedly installed on valve seat 51 close to switch 52, is connect Nearly switch 52 connects alarm device 55, is movably set with Self-resetting component 54 on valve seat 51, the air-flow of outlet air end 32 can drive runback Position component 54 is mobile, and when the wind speed of outlet air end 32 is lower than preset value, Self-resetting component 54 is moved to the induction zone close to switch 52 It is interior, alarm device 55 is triggered close to switch 52.

Circuit control panel 9 is connected close to switch 52, when work, when the wind speed of outlet air end 32 is lower than preset value, Self-resetting portion Part 54 is moved to close in the induction zone of switch 52, sends inductive signal, circuit control panel close to switch 52 to circuit control panel 9 9 triggering 55 alarms of alarm device.

Close to switch 52 without directly being contacted with Self-resetting component 54, as long as Self-resetting component 54 enters proximal to switch 52 It in induction zone, can trigger close to switch 52, can be inductance type, condenser type or Hall-type etc. close to switch 52.

The finger of alarm device 55 can be optical signal, voice signal to the utensil of user's signal an alert, alarm signal Or both combination.

Self-resetting component 54 has auto-reset function, is subjected to displacement under the action of the forces of the wind, after wind-force removes, from Reset components 54 can automatically reset, and when wind speed is lower than preset value, wind-force is smaller at this time, and Self-resetting component 54 can be automatically into close In the induction zone of switch 52, therefore Self-resetting component 54 can be according to the wind speed adjust automatically of outlet air end 32 and close between switch 52 Distance, it is achieved that real-time monitoring of the wind speed sensing device 5 to 32 air velocity of outlet air end, Self-resetting component 54 can rely on It automatically resets under gravity, elastic force or both combination.

Self-resetting component 54 is movably arranged on valve seat 51, Self-resetting component 54 can be rotatably arranged on valve seat 51 or Person is slidably arranged on valve seat 51, under the driving of air-flow, Self-resetting component 54 can opposite valve seat 51 rotate or slide.

In the present embodiment, Self-resetting component 54 is preferable to rely on gravity and automatically resets, and Self-resetting component 54 preferably turns It is dynamic to be arranged on valve seat 51.

Self-resetting component 54 includes valve deck 541, and valve deck 541 is rotatably arranged on valve seat 51, is fixedly installed on valve deck 541 It can trigger the trigger 542 close to switch 52, trigger 542 can be selected according to the type close to switch 52, in safety head In helmet, trigger 542 is magnet, is Hall sensor close to switch 52.The air-flow actuatable valve lid 541 of outlet air end 32 turns upwards Dynamic, when the air-flow of outlet air end 32 becomes smaller, valve deck 541 rotates down under the effect of gravity and to close close to switch 52.Valve seat 51 Overall structure is in tubular form, 51 sets of valve seat on outlet air end 32, valve deck 541 is rotatably connected on valve seat 51 by the second shaft 53 Interior, valve deck 541 can be around the second rotation vertically of shaft 53, and the second shaft 53 is located at the upper end of valve seat 51, when the air-flow of outlet air end 32 Become smaller, valve deck 541 rotates down under gravity, and valve deck 541 is leaned on flip-flop 542 to the induction zone close to switch 52 Closely.When 32 airless of outlet air end passes through, valve deck 541 keeps covering on outlet air end 32 under the effect of gravity, and blower 3 does not work When, 32 airless of outlet air end passes through, and valve deck 541 is covered under the effect of gravity on outlet air end 32, and valve deck 541 can prevent extraneous sky Gas is entered in blower 3 by outlet air end 32, avoids the impurity in outside air, dust from entering blower 3, therefore the safety helmet has Have the advantages that stabilization of equipment performance height and service life are long.

Alarm device 55 includes warning light, and warning light connects circuit control panel 9, when 32 wind speed of outlet air end is lower than preset value, electricity Road control panel 9 controls battery 6 and energizes to warning light, and warning light is lighted, and warning light reminds user's equipment to occur by optical signal Failure, among prevention user is in jeopardy, when using the safety helmet, user is likely to be under noisy environment, is used Person may wear earmuff, if there is a problem of that effect is undesirable using auditory tone cues user, proposing optical signal prompting makes User can feed back to user at the first time, therefore have the effect of early warning much sooner.

Warning light is fixed at the front of helmet shell 1, and warning light can be lighted in front of human body face, and warning light is lighted When, light is pointed into human body eye directly to remind user's equipment to break down at the first time.

The front of helmet shell 1 is further fixedly arranged on headlamp 92, and when headlamp 92 is lighted, warning light is forward illumination, because This provides illumination under dim environment for user.

As shown in fig. 7, further including earmuff 7, earmuff 7 is used to cover on the ear of user, avoids noise to user's Ear causes to damage, and earmuff 7 includes cam 73, and cam 73 is attached on the helmet, arm 72 is hinged on cam 73, cam 73 passes through Third shaft 77 is hinged on the upper end of arm 72, and the lower end of arm 72 is attached with cover 71, driven member 74 is movably set on arm 72, from Moving part 74, which can be, to be slidably arranged on arm 72, and first sliding groove 723, length of the first sliding groove 723 along arm 72 are formed in arm 72 The upper end of arm 72 is formed on direction, driven member 74 is slidably arranged in first sliding groove 723, is arranged between arm 72 and driven member 74 There is the second elastic component 75, the second elastic component 75 can be helical spring, and the second elastic component 75 forces driven member 74 to be connected to cam On 73, it is provided with first position and middle position on driven member 74, when 72 opposing cam 73 of arm rotates, cam 73 can be at first It sets and is moved between middle position, and cam 73 drives driven member 74 to move on arm 72, the second elastic component 75 forces cam 73 is mobile to first position.

During the rotation of 72 opposing cam 73 of arm, driven member 74 is mobile on arm 72 to cause the second elastic component 75 to generate Elastic deformation, after removing external force, since cam 73 is at first position, 75 elastic potential energy of the second elastic component is lower, the second elasticity Part 75 is intended to discharge elastic potential energy, and driven member 74 is rotated with 73 opposing arms 72 of moving cam under the action of the second elastic component 75, Cam 73 returns to first position, therefore cover 71 and user ear can be maintained at suitable distance, this is apart from lower cover 71 It covers on user ear and keeps moderate pressure, therefore wearing, soundproof effect are good, wearing is easypro with facilitating for this earmuff 7 Suitable advantage.

It is additionally provided on the driven member 74 in the second position of first position and middle position the same side, middle position exists Between first position and the second position, when 72 opposing cam 73 of arm rotates, cam 73 can be between middle position and the second position It is mobile, and the electronic driven member 74 of cam 73 moves on arm 72, and the second elastic component 75 forces cam 73 mobile to the second position, When cam 73 moves between first position and middle position, external force is removed, cam 73 moves go back to first position, and cam 73 exists When moving between the second position and middle position, external force is removed, cam 73 moves go back to the second position, therefore cam 73 can be opposite It is maintained in multiple angles and positions in arm 72, the cover 71 on arm 72 can be maintained at multiple apart from upper with user ear, multiple Distance can allow cover 71 to cover on user ear or far from user ear.

When cam 73 is moved to first position, cover 71 is in the moving position for being covered on user ear, works as cam 73 when being moved to the second position, and cover 71 is in the spare space far from user ear.

As shown in figure 8, cam 73 is in first position, wherein cover 71 is in moving position.Second elastic component 75 to from Moving part 74 applies elastic force, and driven member 74 is connected on arm 72, specifically, offers limit hole 741 on driven member 74, on arm 72 It is provided with the retention bead 725 integrally formed with arm 72, retention bead 725 is slided in limit hole 741, when cam 73 is moved to First position, the second elastic component 75 apply elastic force to driven member 74, and driven member 74 is resisted against in retention bead 725, cause cover 71 maintain on moving position, and cover 71 provides user ear suitable sealing, when cover 71 is in moving position, arm 72 It is not locked out with cam 73, the angle between cam 73 and arm 72 is limited by driven member 74, therefore cover 71 covers on ear When on piece, cover 71 has certain operating range, avoids long periods of wear from generating uncomfortable.

As shown in figure 9, cam 73 is in an intermediate position, in this middle position, driven member 74 is farthest apart from 73 axle center of cam, Second elastic component 75 shows maximum compression rate and applies maximum elastic force to driven member 74, and elastic force acts on driven member 74 towards convex The direction of 73 sliding of wheel.When cam 73 is removed to first position movement, between first position and middle position from middle position Profile be substantially in a clinoplain, cause the elastic force of the second elastic component 75 to push driven member 74 mobile, driven member 74 drives convex The rotation of 73 opposing arms 72 is taken turns, cam 73 is mobile to first position, and cover 71 is mobile to moving position；When 73 middle position of cam is moved Mobile to the second position out, the profile between the second position and middle position is in a clinoplain substantially, causes the second elasticity The elastic force of part 75 pushes driven member 74 mobile, and driven member 74 is rotated with 73 opposing arms 72 of moving cam, and cam 73 is moved to the second position Dynamic, cover 71 is mobile to spare space, to realize that cover 71 can be limited on moving position or spare space.

As shown in Figure 10, cam 73 is in the second position, and cover 71 is in spare space, and cover 71 rises to outside helmet shell 1 And the head far from user, to not contacted with the ear of user.Second elastic component 75 applies elastic force to driven member 74, from Cam 73 is connected on arm 72 by moving part 74, and cam 73 causes cover 71 to be locked in together with being pushed against by driven member 74 with arm 72 On spare space, when cover 71 is in spare space, cam 73 is locked on arm 72 by the elastic force of the second elastic component 75, in order to allow Cover 71 returns to moving position, and cam 73 is needed through middle position, and at middle position, the bullet of the second elastic component 75 generation Power is maximum, and user needs to overcome the difference between the elastic force in middle position and the elastic force of the second position, in cam 73 passes through Between position, cam 73 is moved between middle position and first position, and driven member 74 pushes direction of the cam 73 to first position It is mobile.

Cover 71 is connected to the lower end of arm 72 by universal joint, and universal joint includes ballhead 711 and spheric seat, cover Ballhead 711 is fixedly installed on 71, ballhead 711 can be integrally formed with cover 71, and ballhead 711 is rotatably connected on ball cup On 76.Cover 71 can arbitrarily be rotated relative to ball cup 76, so that the head dummy that cover 71 meets different users uses, to help cover Body 71 and user's ear ear form stabilized seal.Ball cup 76 is slidably arranged in the lower end of arm 72, and cover 71 is with ball cup 76 on arm 72 sliding to adjusting position of the cover 71 on arm 72, be formed on arm 72 on the length direction of arm 72 the Two sliding slots 724, ball cup 76 slide in second sliding slot 724, are formed with the first Elastic buckle 732 on ball cup 76, on arm 72 The rack gear 726 being formed on 724 direction of second sliding slot, the first Elastic buckle 732 can be connected on rack gear 726, push cover 71, the first Elastic buckle 732 any position can be clamped on rack gear 726, to facilitate the height adjustment of cover 71.

As shown in figure 11, cam 73 is detachably arranged on helmet shell 1, and helmet shell 1 can be worn together with earmuff 7, can also be single Solely wear helmet shell 1.Plug 731 is formed on cam 73, the two sides in helmet shell 1 offer the second slot corresponding to plug 731 111, the second slot 111 can be provided with the inside of helmet shell 1, and the second Elastic buckle 761, the second slot 111 are formed on plug 731 On offer card hole 112 corresponding to the second Elastic buckle 761, when plug 731 is inserted into the second slot 111, the second elastic card Button 761 is connected in card hole 112, and card hole 112 is exposed on the inside of helmet shell 1, and user can manually press the second Elastic buckle 761 will Earmuff 7 disassembles.

Arm 72 can be hollow shell, and first sliding groove 723 and second sliding slot 724 are formed in arm 72, and arm 72 includes the One shell 721 and second shell 722, first shell 721 and second shell 722 cooperatively form rack gear 726, first sliding groove 723 and second sliding slot 724, the second elastic component 75, driven member 74, ball cup 76, cam 73 and third shaft 77 are installed in first shell 721 and second shell Between 722, so that the components of earmuff 7 be facilitated compactly to be combined together, therefore have the advantages that rationally distributed.

The blower 3 is arranged in helmet shell 1, and the back of helmet shell 1 offers the air intake duct 121 of connection air intake 31, filtering Device 4 is detachably arranged in air intake duct 121, and discharge pipe 8 is provided in helmet shell 1, and discharge pipe 8 is oblate pipe fitting, whole shape Shape is to be fitted in arcuate shape on 1 inner sidewall of helmet shell, therefore under the drainage of discharge pipe 8, filtered air can large area punching Brush finish cover 2 simultaneously forms top-down air-flow, and the air velocity into breathing area reduces, so that air can be soft equal It is flowed in breathing area evenly, one end of discharge pipe 8 connects outlet air end 32, and the other end of discharge pipe 8 protrudes into breathing area, helmet The upper end of shell 1 offers ventilation mouth 134, and when user dresses helmet shell 1, ventilation mouth 134 allows human body head to be connected to the external world, breathes freely Mouthfuls 134 play purpose that is ventilative, perspiring, and when blower 3 works, and breathing area inner part additional air is from the upper end of mask 2 Discharge, the part additional air brushed the sweat that human body head is discharged from ventilation mouth 134 and takes away human body head, wore for a long time Feeling of oppression and heat can also be generated to avoid human body head by wearing the safety helmet, therefore have the advantages that wearing comfort.

Helmet shell 1 includes cage 11, inlet shell 12, outlet air cap 13, front shell cover 14, lampshade cap 16 and vent flap 18, inlet shell 12 is detachably arranged at the back of cage 11, and outlet air cap 13 is detachably arranged at cage 11 and inlet shell 12 upper end, outlet air cap 13 and inlet shell 12 cooperatively form the first slot 19, and blower 3 is installed in outlet air cap 13 and air inlet Between shell 12, discharge pipe 8 is mounted on the inside of outlet air cap 13, and the front of outlet air cap 13 is detachably provided with front shell cover 14 With lampshade cap 16, front shell cover 14, lampshade cap 16 and outlet air cap 13 cooperatively form accommodating chamber, the 133, first elasticity of assembling stand Part 10, warning light, headlamp 92 and circuit control panel 9 are arranged in accommodating chamber, and 92 lamp of headlamp is towards lampshade cap 16, lamp Housing lid 16 is made of transparent material, and warning light is located at the swing for avoiding influencing mask 2 in breathing area.Air intake duct 121 are provided in inlet shell 12, and the vent flap 18 that lid is located on ventilation slot, ventilation are detachably provided in inlet shell 12 Cover board 18 can be connected in inlet shell 12, and filter 4 is detachably arranged in air intake duct 121 by vent flap 18, be divulged information A series of sieve pores 181 are offered on cover board 18, sieve pore 181 is preliminary for that will carry out to the outside air entered in air intake duct 121 Filtering and guidance outside air enter air intake duct 121.

As shown in fig. 6, arrow indicates the dynamic direction of safety helmet work Airflow in figure.Use the safety helmet Air flow direction are as follows: turn on the power switch 91, blower 3 starts, blower 3 by by extraneous air successively pass through vent flap 15, into Wind groove 121, blower 3, wind speed sensing device 5 and discharge pipe 8 enter in breathing area, and extraneous air passed through in air intake duct Filter 4 filters, and blower continues working to maintain the barotropic state in breathing area, and the additional air in breathing area passes through saturating The gap row of air drain 231, mask and human body face is outwardly.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model Within the scope of.

Claims (10)

1. a kind of crash helmet characterized by comprising

Helmet shell (1), is intended to be worn on human body head；

Mask (2), mask (2) are arranged in the front of helmet shell (1), and mask (2) can cover on human body face and and human body face shape At breathing area；

Blower (3), blower (3) setting is in helmet shell (1), including air intake (31) and outlet air end (32), air intake are set on (31) It is equipped with filter (4), air intake (31) connection is extraneous, and outlet air end (32) is connected to breathing area, and blower (3) can pass through outside air Breathing area is sent into after crossing filter (4) filtering；

Wind speed sensing device (5), wind speed sensing device (5) are arranged on outlet air end (32), and wind speed sensing device (5) is connected with police It reports device (55), when wind speed sensing device (5) senses the wind speed of outlet air end (32) lower than preset value, triggering alarm device (55) police Report；

Battery (6) offers the first slot (19) on helmet shell (1), and battery (6) is plugged in the first slot (19), and and blower (3), wind speed sensing device (5) and alarm device (55) are electrically connected, and are extracted battery (6), and battery (6) and blower (3), wind speed incude Device (5) and alarm device (55) disconnect.

2. a kind of crash helmet according to claim 1, which is characterized in that the mask (2) is hinged under helmet shell (1) End, swings mask (2), and mask (2) can be drawn close on helmet shell (1) or be unfolded from helmet shell (1).

3. a kind of crash helmet according to claim 2, which is characterized in that be arranged between the helmet shell (1) and mask (2) Have the first elastic component (10), the first elastic component (10) forces mask (2) to be drawn close on helmet shell (1).

4. a kind of crash helmet according to claim 2 or 3, which is characterized in that be provided with hook on the mask (2) (221), when mask (2) is unfolded from helmet shell (1), hook (221) can be resisted against the exhibition that mask (2) are limited on helmet shell (1) Angle of release degree.

5. a kind of crash helmet according to any one of claim 1 to 3, which is characterized in that the wind speed sensing device (5) include valve seat (51), be fixedly installed on valve seat (51) close to switch (52), connect alarm device (55) close to switch (52), It being movably set on valve seat (51) Self-resetting component (54), the air-flow of outlet air end (32) can drive Self-resetting component (54) mobile, When the wind speed of outlet air end (32) is lower than preset value, Self-resetting component (54) is moved to close in the induction zone of switch (52), approaches Switch (52) triggering alarm device (55).

6. a kind of crash helmet according to claim 5, which is characterized in that the Self-resetting component (54) includes valve deck (541), valve deck (541) is rotatably arranged on valve seat (51), and being fixedly installed on valve deck (541) can trigger close to switch (52) The air-flow actuatable valve lid (541) of trigger (542), outlet air end (32) is rotated up, when the air-flow of outlet air end (32) becomes smaller, valve Lid (541) rotate down under the effect of gravity and to close to switch (52) it is close.

7. a kind of crash helmet described according to claim 1 or 2 or 3 or 6, which is characterized in that further include earmuff (7), earmuff It (7) include cam (73), cam (73) is attached on the helmet, is hinged on cam (73) arm (72), the lower end attachment of arm (72) Have cover (71), be movably set on arm (72) driven member (74), the second elasticity is provided between arm (72) and driven member (74) Part (75), the second elastic component (75) force driven member (74) to be connected on cam (73), and driven member is provided with first on (74) It sets and middle position, when arm (72) opposing cam (73) rotates, cam (73) can move between first position and middle position, And cam (73) drives driven member (74) to move on arm (72), and the second elastic component (75) forces cam (73) to first position It is mobile.

8. a kind of crash helmet according to claim 7, which is characterized in that be additionally provided with second on the driven member (74) Position, middle position are arranged between the first position and the second position, and when arm (72) opposing cam (73) rotates, cam (73) can It is moved between middle position and the second position, and cam (73) drives driven member (74) to move on arm (72), the second bullet Property part (75) force cam (73) mobile to the second position.

9. a kind of crash helmet according to claim 8, which is characterized in that when cam (73) is moved to first position, Cover (71) is in the moving position for being covered on user ear, when cam (73) is moved to the second position, at cover (71) In the spare space far from user ear.

10. a kind of crash helmet described according to claim 1 or 2 or 3 or 6 or 8 or 9, which is characterized in that the blower (3) In helmet shell (1), the back of helmet shell (1) offers the air intake duct (121) of connection air intake (31) for setting, and filter (4) is removable Setting to be unloaded in air intake duct (121), is provided with discharge pipe (8) in helmet shell (1), one end of discharge pipe (8) connects outlet air end (32), The other end of discharge pipe (8) protrudes into breathing area, and the upper end of helmet shell (1) offers ventilation mouth (134).