CN207444353U - A kind of protective cover of helmet raises mechanism and the variable chin bar helmet of mechanism is raised equipped with this - Google Patents

Abstract

The utility model belongs to helmet technical field, it is related to a kind of protective cover of helmet and raises mechanism, it contacts and drives their topology layout and the method for operation by setting the first constraint rail and the second constraint rail on the supporting leg of shield and being aided with driving element, so that shield becomes compulsory and controllable pattern compared with raise action and its process of helmet main body, it on the one hand can improve shield and raise the functional reliability of mechanism and can be achieved to improve the comfort that the helmet wears without smooth-going opening shield is hit with flexibility, on the other hand.Further, the variable chin bar helmet that above-mentioned protective cover of helmet raises mechanism is fitted with, can neatly cook up shield raises process to adapt to the different running position state of chin bar, so as to drastically reduce the chance of chin bar percussion shield；Particularly, the utility model completes conversion of the chin bar between full helmet locations of structures and half helmet locations of structures using gear constraint mechanism, substantially increases the conversion precision and reliability of the variable chin bar helmet.

Description

A kind of protective cover of helmet raises mechanism and the variable chin bar helmet of mechanism is raised equipped with this

Technical field

The utility model is related to a kind of to protect the helmet of human body head safety, relates in particular to one kind for special The helmet that work post operator, motor vehicle and aircraft pilot wearing use can be used for opening button more specifically to one kind Fall raising mechanism and being configured with the variable chin bar helmet for raising mechanism for state shield.

Background technology

It is well known that many special occasions carry out operation worker, such as some painting workshops, fire fighting the disaster relief, The occasions such as fight against terrorism and violence and the tunnels operating environment such as open a mine, mine for coal, tunneling, also have motor vehicle, racing car and aircraft Drive etc., they must wear the helmet to protect the safety on its head.The typical helmet generally all include helmet shell main body, The components such as shield and chin bar, wherein shield and chin bar are installed in helmet shell main body, and shield can be made and present as needed Go out the pose raised or detained compared with helmet shell main body.Shield is made of transparent material, and effect is to prevent sand and dust, rain The intrusion of the deleterious particles such as water, smog and raindrop, particularly it branch, slungshot or even explosive etc. can be prevented to eyelid Injury；The effect of chin bar is then that the chin, mouth nose and face of wearer can be effectively protected when colliding or other events The vitals such as the cheek.

In fact, wear using the helmet process among, it is often necessary to raise its shield every now and then, so as to it is outer Boundary carries out exchanges and communication or can dissipate to be gathered in the water spray haze that inner helmet is generated due to the breathing of driver； For those are with the helmet of variable chin bar, for example Spanish patent application ES2329494T3 and the applicant propose Chinese patent application ZL201010538198.0 and CN105901820A etc. involved by the helmet, they are raised also to shield Separately there is a heavy meaning, that is, prevent shield from colliding with chin bar, that is, raising for shield must be with the operating status phase of chin bar Match somebody with somebody and interrelated, when in other words chin bar carries out state transition between full helmet structure and half helmet structure, shield must be in due course Ground is on the position raised, and is buckled the shield of state with being in when returning full helmet position to avoid chin bar and is collided and damage It is bad.

In fact, existing protective cover of helmet raise be substantially rely on bounce up spring carry out with completion (including above-mentioned Chinese patent application ZL201010538198.0 that Spanish patent application ES2329494T3 and the applicant propose and The helmet that CN105901820A is related to), it is to be in button by human hand triggering to fall the shield of state and to it first that this, which raises process, It is unlocked, then raises shield automatically by the energy of the precommpression or the pre-stretching that bounce up spring.So layout the advantages of be Raising for shield can be automatically performed, therefore it is very convenient to open shield.However, using the scheme for bouncing up spring opening shield Shortcoming has been still remained, has been mainly manifested in：1) bouncing up the presence of spring necessarily causes the design of shield and helmet main body to become It is complicated and shield functional reliability is caused to decline because no matter using torsional spring or helical spring or being tension spring, it All necessarily occupy certain space to meet the release of spring and compression, and corresponding Accessory Members must be configured simultaneously such as The component of locking member or thrust component, anti-dropout component or even servo-actuated slide component etc., these reserved spaces and configuration On the one hand the space of helmet preciousness is occupied, on the other hand complicates also helmet designs and negatively affects the reliable of shield work Property, in addition, bounce up spring mechanism vibration, easily generate in the case of percussion it is unstable rock, there is also when serious non- Autonomous unlock and it is uncontrolled raise shield, in other words the functional reliability of shield is not high；2) presence for bouncing up spring will So that the comfort that the helmet is worn declines, since shield is to rely on to bounce up the elastic force of spring and raise, in practice it has proved that, based on this The shield of class mechanism easily generates friction and impact noise during raising, and is especially bounced up in shield to high limit position When will necessarily strike limit component and generate very big percussion noise, can not only negatively affect the work of shield and its related accessory Make reliability, and pay particular attention to bounce up spring mechanism and just be arranged in by the ear of wearer, the impact noise is obviously to wearing The experience worn is negative, and the comfort of helmet wearing will be reduced by other words bouncing up spring；3) machine is raised based on bounce up spring Structure can cause the process that bounces up of shield to become uncontrollable, what this point pair can be converted between full helmet structure and half helmet structure It is particularly important for the variable chin bar helmet because the chin bar of the variable jaw structure protecting type helmet is there are two types of state, one kind be chin bar by Full helmet change in location is to half helmet position, and shield must also be in or be raised with chin bar among the process raised at this time in chin bar, Another kind is chin bar is returned back full helmet position by half helmet position, and shield must be fallen after rise by buckleing state and raise to avoid chin bar at this time When percussion occurs therewith, as previously mentioned, based on the mechanism for bouncing up spring shield can only be made to protect there are two types of absolute state or shield Or cover button completely falls shield and raises completely, that is, it cannot cook up shield according to the operating status of chin bar raise strategy, In other words meaning the process of raising of shield cannot flexibly manipulate.

To sum up, it is existing that mechanism is raised really in reliability, comfort and flexibility aspects based on the shield for bouncing up spring Shortcomings, therefore still have improvement and the space promoted.

The content of the invention

The above problem existing for mechanism is raised for existing protective cover of helmet, the utility model provides a kind of protective cover of helmet and raises Mechanism further also provides the variable chin bar helmet that mechanism is raised equipped with this, it is therefore intended that：Changed by principle innovation and structure Into on the one hand effectively improving the functional reliability that shield raises mechanism, on the other hand effectively improve shield and raise mechanism to the helmet The positive influences of wearing comfort can also realize that shield raises the flexible planning of process with suitable further for the variable chin bar helmet Answer the different conditions of chin bar.

The purpose of this utility model is achieved like this：A kind of protective cover of helmet raises mechanism, it include helmet main body, Chin bar and shield, the shield set there are two supporting leg, the two described supporting legs to be rotationally fitted in helmet main body, institute The chin bar stated is set there are two fork, the two described forks being laid out respectively by the both sides of helmet main body, and feature exists In：The first constraint rail and the second constraint rail are at least provided on a supporting leg of shield, is additionally provided with driving element, it should Driving element can drive shield to generate compared with the helmet on supporting leg contacting by way of the first constraint rail or/and the second constraint rail Body raises run action.

Further, screens construction is provided on above-mentioned shield, is in addition fitted in helmet main body and constructs phase with the screens Therefore the lock-bit component of concord and lock-bit spring, the lock-bit component can be simultaneously generated compared with helmet sheet by the effect of lock-bit spring The displacement movement of body, the lock-bit component can construct with screens and form locking cooperation.

Further, above-mentioned screens construction and lock-bit component are tooth-shape structure, and can be made of these tooth-shape structures The locking cooperation of intermeshing form.

Further, the supporting leg of above-mentioned shield its compared with helmet main body rotation be dead axle pendulum motion.

The position and the driving element and second that above-mentioned driving element is in contact with the first constraint rail constrain rail The position of contact is cylindrical structure.

A kind of variable chin bar helmet that mechanism is raised equipped with protective cover of helmet, it is characterised in that：The chin bar is can be opposite The variable chin bar of relative motion is generated in helmet main body, which constrains and the driving element is driven to be run and makes the driving first Part generates the displacement and movement compared with helmet main body.

Further, the above-mentioned variable chin bar helmet its fixed gear of inner tooth type is provided in helmet main body, while protecting It is fastenedly connected on jaw or integral structure makes the rotate gear for having external tooth type, the rotate gear is nibbled with fixed gear holding The movement process of chin bar can be constrained by merging.

Further, its intermeshing fixed gear of generation of the above-mentioned variable chin bar helmet and rotate gear, fixed gear Pitch radius R, rotate gear pitch radius r and when chin bar turns over angle [alpha] compared with helmet shell body during engagement turn The central angle β that moving gear axle center accordingly turns over, these described parameters meet constraint formulations：

Further, above-mentioned variable its fixed gear of the chin bar helmet includes the first fixation gear teeth section and the second fixation gear teeth Section, the rotate gear include the first rotation gear teeth section and second rotates gear teeth section, and first rotates gear teeth sections only with the Engagement occurs for one fixation gear teeth section, the second rotation gear teeth section is only engaged with the second fixation gear teeth section.

Further, the axle center weight that the axle center of its first rotation gear teeth section of the above-mentioned variable chin bar helmet rotates gear teeth section with second It closes.

Further, the first orbit of shaft center and second of its first rotation gear teeth section of the above-mentioned variable chin bar helmet rotates gear teeth section The second orbit of shaft center they point of intersection it is tangent.

Making that above-mentioned driving element is fastenedly connected in chin bar or the driving element and chin bar are structure as a whole.

Above-mentioned driving element be fastenedly connected or integral structure be produced in rotate gear.

A kind of protective cover of helmet of the utility model raises mechanism, it on shield supporting leg by setting the first constraint rail and second Rail is constrained, and is additionally provided with driving element simultaneously and drives shield to contact the mode of the first constraint rail or/and the second constraint rail Cover is generated raises action compared with helmet main body, thus on the one hand can forcibly raise shield on demand, on the other hand can be flexible Arrange shield raises process, while can also be achieved and smoothly without hitting raise shield, therefore can improve the work that shield raises mechanism Make reliability and improve its positive influences degree to helmet wearing comfort.Further, it is fitted with above-mentioned protective cover of helmet and raises machine The variable chin bar helmet of structure, additionally it is possible to realize that shield raises the flexible planning of process and adapts to the different conditions of chin bar, and in tooth Under wheel case of constraint chin bar is reliably made to be converted between full helmet position and half helmet position, so as to effectively improve the helmet Use reliability.

Description of the drawings

Fig. 1 is that a kind of protective cover of helmet of the utility model raises mechanism and is fitted with the axonometric schematic diagram of the mechanism helmet；

Fig. 2 is the topology layout schematic diagram that a kind of protective cover of helmet of the utility model raises its shield of mechanism and locking mechanism；

Fig. 3 is the axonometric drawing that a kind of protective cover of helmet of the utility model raises its shield of mechanism；

Fig. 4 is the front view of its side elevation of shield shown in Fig. 3；

Fig. 5 is that a kind of protective cover of helmet of the utility model raises its driving element of mechanism by the first constraint rail of contact to drive Shield simultaneously makes shield be raised by buckleing state position to the process status schematic diagram of full open position position；

Fig. 6 is that a kind of protective cover of helmet of the utility model raises its driving element of mechanism by the second constraint rail of contact to drive Shield simultaneously makes shield be raised by buckleing state position to the process status schematic diagram of full open position position；

Fig. 7, which is that the utility model is a kind of, wears the shield being made of driving element and the first constraint rail and the second constraint rail Raise the lateral elevational view of the variable chin bar helmet of mechanism；

Fig. 8 is that variable its chin bar of the chin bar helmet uses gear constraint mechanism and shield to configure the machine of raising shown in Fig. 7 The primary clustering exploded perspective view of structure；

Fig. 9 is that the rotate gear of gear constraint mechanism and fixed gear are equal used in variable its chin bar of the chin bar helmet shown in Fig. 7 For the structure diagram of one section of gear teeth section form；

Figure 10 is that the rotate gear of gear constraint mechanism and fixed gear are equal used in variable its chin bar of the chin bar helmet shown in Fig. 7 For the structure diagram of two sections of gear teeth section forms；

Figure 11 is variable two sections of gear teeth section exposed gear constraint mechanisms of chin bar helmet adapted and its and helmet main body shown in Fig. 7 One embodiment schematic diagram of relative placement；

Figure 12 is the schematic diagram that its gear constraint mechanism of the variable chin bar helmet shown in Figure 11 is in different operating statuses；

Figure 13 is exhaled when variable its chin bar of the chin bar helmet is converted into half helmet locations of structures by full helmet locations of structures shown in Fig. 7 The shield answered raises mechanism status change schematic diagram；

Figure 14 is exhaled when variable its chin bar of the chin bar helmet is converted into full helmet locations of structures by half helmet locations of structures shown in Fig. 7 The shield answered raises mechanism status change schematic diagram；

Figure 15 is that relative geometrical relation is shown between its gear constraint mechanism of the variable chin bar helmet shown in Fig. 7 and chin bar pose It is intended to.

Specific embodiment

The utility model is further described with specific embodiment below, referring to Fig. 1-15：

A kind of protective cover of helmet raises mechanism, includes helmet main body 1, chin bar 2 and shield 3, and the shield 3 is provided with two A supporting leg 3a, the two supporting legs 3a split by the both sides of helmet main body 1 and be rotationally fitted in helmet main body 1 it Upper, described chin bar 2 sets there are two forks 2a, the two described forks are laid out respectively 2a in the both sides of helmet main body 1 Other (referring to Fig. 1 to Fig. 8)；The characteristic of the utility model is：At least the first constraint is provided on a supporting leg 3a of shield 3 The constraint rail 3c of rail 3b and second, are additionally provided with driving element 4, which can be by contacting supporting leg 3a upper first about The mode of the constraint rails of beam rail 3b (referring to Fig. 5) or/and second 3c drives shield 3 to generate and raises operation compared with helmet main body 1 Action is (referring to Fig. 6), and wherein driving element 4 can be gone directly to stir, can also be worn by the helmet by helmet wearer by its hand Wearer goes to stir indirectly by other parts or mechanism, particularly can be by helmet wearer by pulling the chin bar 2 of the helmet Then go to stir driving element 4 (the exactly this situation that Fig. 7 and Fig. 8 are provided) via the chin bar 2 again；In Figure 5：Driving member From an extreme position shown in Fig. 5 (a) residing for it, (shield 3 at this time can be in buckles the state that falls also to part 4 completely The state of helmet wearer eyes can be protected by being in), march to Fig. 5 (b) and then Fig. 5 (c) position and contact and drive First constrains rail 3b and shield 3 is made to generate the action raised to 1 helmet top of helmet main body and process, until advancing to shown in Fig. 5 (d) Position and shield 3 is raised to completely open position, and in figure 6：It is another shown in driving element 4 from Fig. 6 (a) residing for it One extreme position sets out, and (shield 3 at this time can also be in be buckled the state fallen that is, is in and the helmet can be protected to wear completely The state of person's eyes), march to Fig. 6 (b) and then Fig. 6 (c) position and contact and drive the second constraint rail 3c and produce shield 3 It is raw to raise shield 3 to complete with process, up to advancing to position shown in Fig. 6 (d) to the action that 1 helmet top of helmet main body is raised Open position；Herein, the first constraint rail 3b and second constrains rail 3c either the form of unilateral rail is (such as Fig. 2 to Fig. 6 institutes Show), can also be bilateral rail such as sliding slot form (not shown), wherein as first constraint of the contact of driving element 4 rail 3b Or contact second constraint rail 3c and pass through they drive shield 3 move when, shield 3 will be generated enforceable compared with the helmet Body 1 raises action (as shown in Figure 5 and Figure 6)；It should be noted that the first constraint rail 3b and the second constraint rail 3c they both It can be arranged on one of supporting leg 3a of shield 3, the first constraint rail can also be respectively provided on the two supporting legs 3a of shield 3 The constraint rail 3c of 3b and second, wherein being provided with the constraint rails of the first constraint rail 3b and second 3c in pairs with the two supporting legs 3a of shield 3 For best circumstance；The utility model is by planning and selecting different shape to move towards the first constraint rail 3b and the second constraint rail of profile 3c can adjust and control shield 3 to raise position and the posture of process, thus the process of raising of shield 3 be can controllably and can Planning；Further, since driving element 4 using sliding cooperation form with first constraint rail 3b be in contact or with second about Beam rail 3c is in contact and them is thereby driven to generate movement, therefore it drives process to be smooth-going and stablize, and in other words can have Effect avoids them from occurring to hit damage and impact noise, therefore can effectively improve the comfort for wearing the helmet；It is pointed out that the One constraint rail 3b and the second constraint rail 3c can both intersect (as shown in Figures 2 to 6), can not also intersect (not shown), Wherein intersecting situation is either phase can also be carried out in the form of one section of transition rail such as arc transition rail by directly intersecting It hands over, the first intersecting constraint rail 3b of driving and the can be completed using a driving element 4 when they are using intersecting form Therefore two constraint rail 3c also can obtain simplest topology layout therefore be optimised form, and when they use disjoint form When the driving element 4 of adapted more than one is then needed to drive them respectively, herein, it is described it is intersecting both can be direct phase The situation handed over or be connected with each other by one section of transition camber line, wherein to be connected as most preferably using transition camber line, because this Sample more neatly layout designs first can constrain the constraint rails of rail 3b and second 3c；It should be noted that in the utility model Described raise refers to that shield 3 has that (i.e. shield 3 is in the eyelid of protection people from buckleing state compared with helmet main body 1 State) to opening state (i.e. shield 3 is in the state of the mouth nose or eyelid that expose people of raising), shield 3 will be from this time in other words Button dropping place, which is put to helmet calvarium position, sets out；It is further to note that set the first constraint rail 3b's and the second constraint rail 3c Purpose is, can select to drive raising step or raising order for shield 3 according to the different motion form of driving element 4, For example " past " of driving element 4 can be arranged to contact the first constraint rail 3b and drive the shield 3 to generate the action raised according to this, Corresponding is that can arrange " returning " of driving element 4 to contact the second constraint rail 3c and according to this shield 3 be driven to generate These situations are set forth in the action raised, Fig. 5 and Fig. 6：Fig. 5 gives driving element 4 and passes through the first constraint rail of contact 3b And drive shield 3 generation raise the situation of action, Fig. 6 then gives driving element 4 by contacting the second constraint rail 3c to drive Shield 3, which generates, raises the situation of action, it is obvious that if Fig. 5 it is corresponding be driving element 4 " toward ", if Fig. 6 echoes is to drive " returning " of dynamic element 4.It is not difficult to find that the utility model on the supporting leg 3a of shield 3 by setting the first constraint rail 3b and second The construction of rail 3c is constrained, while driving element 4 is arranged mutually to echo therewith, thus can realize shield 3 as needed raises action With process, the convenience and reliability for opening shield 3 are improved.

The utility model in order to enable shield 3 be in when buckleing state can steadily locking, without because various vibrations, It rocks and causes its undesirable opening with factors such as percussions, screens construction 5 can be provided on shield 3, while in helmet sheet It is equipped on body 1 and constructs lock-bit component 6 and the lock-bit spring 7 (referring to Fig. 2, Fig. 5 and Fig. 6) that 5 phases are echoed, the lock-bit with the screens Component 6 by lock-bit spring 7 act on and can therefore generate the displacement movement compared with helmet main body 1 so that lock-bit Component 6 is in contact with screens construction 5 and forms locking cooperation, it is possible thereby to utilize lock-bit component 6 and the locking of screens construction 5 Cooperation carrys out locking and is in button to fall the shield 3 of state so as to prevent undesirable formula out of control occurs in it from raising, Fig. 5 (a) and Fig. 6 (a) Shown situation is exactly that typical lock-bit component 6 occurs with screens construction 5 shown in situation, Fig. 5 (b) and Fig. 6 (b) of locking cooperation Situation to be lock-bit component 6 construct 5 generating units with screens decomposes lock i.e. some lock tooth disengagement but still have another part lock Tooth still (correspond to shield 3 and chin bar 2 and has been converted by complete closed state to there is a little gap at this time in the situation of engagement locking On the one hand state, shield 3 under this state remain at the functional status of protection helmet wearer eyelid, on the other hand can send out again Wave airing function and the fog generated due to wearer breathes of inner helmet can be driven), the feelings shown in Fig. 5 (c) and Fig. 6 (c) Shape has been in the released state completely disengaged for lock-bit component 6 and screens construction 5, and the situation shown in Fig. 5 (d) and Fig. 6 (d) is shield Driven element 4 is driven to and completely open raises state full cover 3；It should be noted that the lock-bit bullet of the utility model Spring 7 can be any structure type or group of compression spring form, tension spring form, torsional spring form, leaf spring form either other springs It closes, and wherein in the form of lock-bit spring 7 is compression spring structure is optimal (as shown in Figure 2, Figure 5 and Figure 6).Further, it is described Screens construction 5 and lock-bit component 6 can be various locking fit structures, for example can be buckle structure, latch catch etc., Particularly, screens construction 5 and lock-bit component 6 can be tooth-shape structure and can be intermeshed to form locking cooperation (such as Fig. 2, Fig. 5 Shown in Fig. 6), be arranged benefit is can to obtain the capture configurations of simple structure and reliable operation.

Shield 3 and its supporting leg 3a in the utility model, they can make certain mobile fortune compared with helmet main body 1 Dynamic, pendulum motion or rotational motion or even it can also be the compound of these movements；Particularly, shield 3 and its supporting leg 3a can be with Make dead axle pendulum motion compared with helmet main body 1, they will there are one be to be relatively fixed for helmet main body 1 at this time Axis of oscillation O1 (referring to Fig. 2, Fig. 4 to Fig. 6), the benefit being arranged is that can simplify the structure of shield 3 and improve it can By property.

Driving element 4 in the utility model its with the first constraint rail 3b positions being in contact and the driving element 4 With the second positions for being in contact of constraint rail 3c all can be cylindrical structure (referring to Fig. 5 and Fig. 6), so when driving element 4 It can guarantee that it is contacted with the first constraint rail 3b and the second constraint rail 3c smooth-goings at different operating positions, because cylindrical Construction is adapted to the pose (i.e. position and posture) of different driving elements 4, so as to be advantageously implemented smooth-going driving first about The constraint rails of beam rail 3b and second 3c.

The utility model is a kind of to raise the variable chin bar helmet of mechanism (referring to Fig. 1, Fig. 7, Figure 13 and figure equipped with protective cover of helmet 14), the shield raises mechanism and raises mechanism towards shield 3 to be foregoing, it includes 3 upper supporting leg 3a of shield and opens If the first constraint rail 3b and the second constraint rail 3c, additionally included driving element 4, characteristic is：The chin bar 2 is Can compared with helmet main body 1 generate relative motion variable chin bar, that is, the structure of chin bar 2 and position be can be as needed And change is made, particularly, the chin bar 2 of the utility model can carry out between full helmet locations of structures and half helmet locations of structures It mutually converts, in other words the helmet can become the full helmet structural type helmet or be converted to the half helmet structural type helmet, when it For the full helmet structure helmet when can well safeguard protection wearer and can then allow wearer when it is the half helmet structure helmet It can advantageously be linked up with the external world, the exactly chin bar 2 that Figure 13 (a) and Figure 14 (c) and Figure 14 (d) reflect is in full helmet structure The state of state and when what Figure 13 (c) and Figure 13 (d) and Figure 14 (a) were reflected is then that chin bar 2 is in half helmet configuration state Situation, it constrains and driving element 4 is driven to be run for the chin bar 2 of the varistructure in the utility model, so as to promote the driving first Part 4 generates the displacement and movement compared with helmet main body 1, and thus constrains rail 3b or with second by driving element 4 and first Constraint rail 3c generates contact and with this shield 3 is driven to make the movement raised, and in other words the power of raising of shield 3 can be with source From in chin bar 2, so, helmet wearer can be gone to pull chin bar 2 by its hand and further be touched by the chin bar 2 Hair and the action for driving shield 3 and raising its generation.Further, it is fitted with the variable chin bar head that protective cover of helmet raises mechanism Helmet is provided with the fixed gear 8 of inner tooth type in helmet main body 1, while is fastenedly connected in chin bar 2 or integral structure system Make have the rotate gear 9 of external tooth type, the rotate gear 9 engaged with the holding of fixed gear 8 and can constrain the movement of chin bar 2 into Journey, herein, fixed gear 8 compared with helmet main body 1 be it is opposing stationary, fixed gear 8 can both be fabricated separately after again It is fastenedly connected in helmet main body 1, fixed gear 8 can also use the making that is structure as a whole, Fig. 8 to Figure 10 with helmet main body 1 Shown is situation that fixed gear 8 is fabricated separately, and the rotate gear 9 in the utility model can be compared with helmet main body 1 Displacement movement is generated, rotate gear 9 can not only have been rotated around the axle center O2 of itself while axle center O2 but also can be opposite It is performed relative motion in helmet main body 1, particularly, axle center O2 can make the movement of arc track (there are one i.e. axle center O2 exists It is stationary fixed axis O3 compared with helmet main body 1, as shown in Figure 9).Further, intermeshing fixation occurs Gear 8 and rotate gear 9, the pitch radius R of fixed gear 8, the pitch radius r of rotate gear and are protected during engagement The central angle β that the axle center O2 of rotate gear 9 is accordingly turned over when jaw 2 turns over angle [alpha] compared with helmet shell body 1, i.e., by fixing axle The center of circle angle that the axle center O2 that line O3 is measured and obtained is turned over, referring to Fig. 9 and Figure 15：Chin bar 2 is by full helmet structure bit at this time Put overturning to cross it is maximum raise position i.e. 2 → chin bar of chin bar (2) of state shield 3, echo therewith is that axle center O2 goes to axis The position of the heart (O2), that is, axle center O2 → axle center (O2) (referring to Figure 15), these described parameters meet constraint formulations： It is not difficult to deduce, restriction relation is engaged with the above-mentioned of rotate gear 9 by fixed gear 8, chin bar 2 can be obtained and realize its full helmet knot Power and energy between structure and half helmet structure, and position and posture of the chin bar 2 during mapped structure can be accurately controlled. Particularly, the utility model raises the variable chin bar helmet of mechanism equipped with shield noted earlier, and fixed gear 8 can include First fix gear teeth section 8a and second fix gear teeth section 8b, in addition rotate gear 9 can include the first rotation gear teeth section 9a and Second rotates gear teeth section 9b, and the first rotation gear teeth section 9a is only engaged with the first fixation gear teeth section 8a, the second rotating wheel Tooth section 9b is only engaged (referring to Fig. 8, Figure 10 to Figure 12) with the second fixation gear teeth section 8b, and the purpose being arranged is can to obtain The trajectory planning of the more broad range of chin bar 2 is obtained to be adapted to the outer contour shape of helmet main body 1, so as to meet chin bar 2 across shield Cover 3 and the needs for falling fastening helmet main body 1 after rise can also realize the flexible design of the helmet；It is pointed out that when fixed tooth When wheel 8 and rotate gear 9 include two sections of gear teeth sections, each echoes meshed gears section and the chin bar 2 echoed The single-wheel tooth section that its restriction relation of the angle turned over compared with helmet main body 1 still has to meet given by front fixes tooth Restriction on the parameters formula when wheel 8 and rotate gear 9；On this basis, the utility model can also allow the first rotation gear teeth section 9a The axle center O2 of the rotations of axle center O2 and second gear teeth section 9b coincide together (referring to Figure 10 to Figure 12), can so cause chin bar 2 more smooth out during mapped structure；Further, the utility model can also allow the first axle center rail of the first rotation gear teeth section 9a The second orbit of shaft center L2 that mark L1 and second rotates gear teeth section 9b is tangent (referring to Figure 10 and Figure 11) at their intersection point Q, such as This arrangement is similarly in order to which chin bar 2 can be smoothed out more during mapped structure, it should be pointed out that if the first rotating wheel The number of teeth that the number of teeth of tooth section 9a rotates gear teeth section 9b with second differs, then the first orbit of shaft center L1 makees arc track movement at this time And the fixed axis O3 possessed and the second orbit of shaft center L2 makees arc track and moves possessed fixed axis O3 they will not be weighed It closes (referring to Figure 10 and Figure 11).The utility model raises the variable chin bar helmet of mechanism equipped with above-mentioned shield, and driving element 4 can To be fastenedly connected in chin bar 2 or the driving element 4 and chin bar 2 are structure as a whole making, it can thus simplify driving The drive actions of element 4 and be capable of it is more convenient manipulation driving element 4 movement；Further, the driving element 4 fastening connects It is connected on or integral structure is produced on rotate gear 9 (referring to Fig. 8), drive driving element 4 at this time and it is made to generate movement It would be much more convenient, particularly, when driving element 4 is cylindrical configurations, the axis of axis of rotation and the rotate gear 9 of its cylindrical configurations Heart O2 can be overlapped, and the purpose of such setting is can be further simplified the structure and type of drive of driving element 4, and then can be with Simplify shield 3 raises mechanism；Figure 12 gives the variable chin bar helmet of the utility model its gear constraint mechanism and is in different fortune The schematic diagram of row state, wherein Figure 12 (a) concord chin bar 2 are in full helmet locations of structures, chin bar 12 (b) concord chin bar 2 is in and turns over The more position (at this time shield 3 be in completely open maximum raise state) of shield 3,12 (c) echoes chin bar 2 and is in half helmet structure Position；Figure 13 give chin bar 2 by full helmet locations of structures overturning be changed to half helmet locations of structures when chin bar 2 pose variation and Its state change process for echoing and driving driving element 4 that corresponding position variation occurs, wherein Figure 13 (a) are corresponded at chin bar 2 Buckleing echo on state position, therewith completely it is in a limit at driving element 4 at full helmet locations of structures and shield 3 Position, the corresponding chin bars 2 of Figure 13 (b) are in open position, echo therewith is that driving element 4 is in contact and drives the first constraint Rail 3b and be in shield 3 and raise to maximum open position state, the corresponding chin bars 2 of Figure 13 (c) have been totally turned over to half helmet structure Position, echo therewith is that driving element 4 has reached and has been in another extreme position, and Figure 13 (d) then corresponds to chin bar 2 and is in Half helmet locations of structures and shield 3 fallen after rise again again to buckle the position of state completely, echo therewith be driving element 4 still Be in on an extreme position corresponding during 2 half helmet position of chin bar；Figure 14 gives chin bar 2 and is returned by half helmet locations of structures The pose of chin bar 2 changes when returning full helmet locations of structures and it echoes and drives driving element 4 that corresponding position variation occurs The corresponding chin bar 2 of state change process, wherein Figure 14 (a) is in half helmet locations of structures and shield 3 be in buckle completely state position, What is echoed therewith is that driving element 4 is in an extreme position, and the corresponding chin bars 2 of Figure 14 (b) are in open position, echo therewith It is that driving element 4 is in contact and drives the second constraint rail 3c and be in shield 3 and raise to maximum open position state, Figure 14 (c) corresponding chin bar 2 has been totally turned over to full helmet locations of structures, echo therewith is that driving element 4 reaches and is in another pole Extreme position, the corresponding chin bars 2 of Figure 14 (d) are in full helmet locations of structures and shield 3 is fallen after rise again again to the position for buckleing state completely Put, echo therewith be driving element 4 be still in on an extreme position corresponding during 2 full helmet position of chin bar.

The outstanding advantages of the utility model compared with the prior art are, by setting the first constraint on 3 supporting leg 3a of shield The constraint rail 3c of rail 3b and second, and driving element 4 is additionally provided with simultaneously to contact the constraint rails of the first constraint rail 3b or/and second The mode of 3c and shield 3 is driven to generate the action of raising compared with helmet main body 1, thus on the one hand can forcibly raise shield on demand Cover, on the other hand can flexible arrangement shield 3 raise process, while can also be achieved and smoothly without hitting raise shield 3, therefore can carry High shield raises the functional reliability of mechanism and improves its positive influences degree to helmet wearing comfort.Further, it is fitted with Above-mentioned protective cover of helmet raises the variable chin bar helmet of mechanism, additionally it is possible to realize that shield 3 raises the flexible planning of process and adapts to protect The different conditions of jaw 2, and under gear case of constraint chin bar 2 is reliably made to be turned between full helmet position and half helmet position It changes, so as to effectively improve the use reliability of the helmet.

Above-described embodiment is only several preferred embodiments of the utility model, not limits the protection of the utility model according to this Scope, therefore：It is new should all to be covered by this practicality for the various equivalence changes that all structures, shape, principle according to the utility model are done Within the protection domain of type.

Claims (13)

1. a kind of protective cover of helmet raises mechanism, it includes helmet main body, chin bar and shield, and there are two branch for the shield setting Leg, the two described supporting legs are rotationally fitted in helmet main body, the chin bar set there are two fork, it is described this Two forks being laid out by the both sides of helmet main body respectively, it is characterised in that：At least it is provided on a supporting leg of shield First constraint rail and the second constraint rail, are additionally provided with driving element, which can be by contacting on supporting leg first about The mode of beam rail or/and the second constraint rail drives shield to generate and raises run action compared with helmet main body.

2. a kind of protective cover of helmet as described in claim 1 raises mechanism, it is characterised in that：Screens structure is provided on the shield It makes, the lock-bit component mutually echoed with screens construction and lock-bit spring, the lock-bit component is in addition fitted in helmet main body It is acted on by lock-bit spring and can therefore generate the displacement movement compared with helmet main body, the lock-bit component can be with screens structure It makes and forms locking cooperation.

3. a kind of protective cover of helmet as claimed in claim 2 raises mechanism, it is characterised in that：The screens construction and lock-bit component It is tooth-shape structure, and can be made of these tooth-shape structures with the locking of intermeshing form.

4. a kind of protective cover of helmet as claimed in claim 3 raises mechanism, it is characterised in that：The supporting leg of the shield its compared with The rotation of helmet main body is dead axle pendulum motion.

5. a kind of protective cover of helmet as described in Claims 1-4 any one raises mechanism, it is characterised in that：The driving member The position that the position and the driving element that part and the first constraint rail are in contact are in contact with the second constraint rail is cylinder Columnar structure.

6. a kind of variable chin bar helmet that mechanism is raised equipped with any protective cover of helmet of claim 1 to 5, feature exist In：For that can generate the variable chin bar of relative motion compared with helmet main body, which constrains and drives the driving chin bar Element runs and the driving element is made to generate displacement and movement compared with helmet main body.

7. the variable chin bar helmet as claimed in claim 6, it is characterised in that：The fixation of inner tooth type is provided in helmet main body Gear, while be fastenedly connected in chin bar or integral structure making has the rotate gear of external tooth type, the rotate gear with Fixed gear keeps engaging and can constraining the movement process of chin bar.

8. the variable chin bar helmet as claimed in claim 7, it is characterised in that：The intermeshing fixed gear of generation and turning gear Wheel, the pitch radius R of fixed gear, the pitch radius r of rotate gear and during engagement chin bar compared with helmet shell body The central angle β that rotate gear axle center accordingly turns over when turning over angle [alpha], these described parameters meet constraint formulations：

9. the variable chin bar helmet as claimed in claim 8, it is characterised in that：The fixed gear includes the first fixation gear teeth Section and the second fixation gear teeth section, the rotate gear include the first rotation gear teeth section and second and rotate gear teeth section, and first Rotation gear teeth section is only engaged with the first fixation gear teeth section, the second rotation gear teeth section is only fixed gear teeth section with second and nibbled It closes.

10. the variable chin bar helmet as claimed in claim 9, it is characterised in that：Described first rotate the axle center of gear teeth section with Second axle center for rotating gear teeth section overlaps.

11. the variable chin bar helmet as claimed in claim 10, it is characterised in that：Described first rotates the first axle center of gear teeth section Track with second rotate gear teeth section the second orbit of shaft center they point of intersection it is tangent.

12. the variable chin bar helmet as described in claim 6 to 11 any one, it is characterised in that：The driving element is tight It is solidly connected in chin bar or the driving element and chin bar is structure as a whole making.

13. the variable chin bar helmet as claimed in claim 12, it is characterised in that：The driving element be fastenedly connected or one Body structure fabrication is in rotate gear.