CN201854732U

CN201854732U - Helmet with changeable jaw guard structure

Info

Publication number: CN201854732U
Application number: CN2010205998454U
Authority: CN
Inventors: 廖汝甜
Original assignee: JIANGMEN PENGCHENG HELMET CO Ltd
Current assignee: JIANGMEN PENGCHENG HELMET CO Ltd
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2011-06-08
Anticipated expiration: 2020-11-10

Abstract

The utility model belongs to the technical field of a helmet and relates to a helmet with a changeable jaw guard structure. The helmet with the changeable jaw guard structure comprises a helmet shell main body, a jaw guard and two templates. The jaw guard is provided with two fork handles, the two templates are respectively arranged on the two side surfaces of the helmet shell main body, and the templates are fixedly connected with the helmet shell main body or are in an integral structure with the helmet shell main body. The helmet with the changeable jaw guard structure is characterized in that each template is provided with two groove-shaped rails, four movable nails are additionally arranged, one end of each movable nail is inserted in the four rails on the two templates respectively, each fork handle is connected with two movable nails, the movable nails are driven by the jaw guard through the fork handles, each movable nail moves along the respective corresponding rail, and the position of the jaw guard can be changed under the constraining action of the movable nails and the rails. Compared with the prior art, the helmet with a changeable jaw guard structure has the advantages that sliding rails are no longer arranged on the jaw guard, so that the anti-bending strength of the fork handles is enhanced, and the anti-breaking capability of the fork handles of the jaw guard is accordingly enhanced; in addition, sliding grooves are no longer arranged on the fork handles, so that the trouble of concentrated stress can be effectively eliminated, and the strength of the jaw guard is improved.

Description

The variable jaw structure helmet that protects

Technical field

The utility model relates to a kind of helmet of the head part's of protection safety, relates in particular to a kind of for the motor vehicle especially helmet worn of Motor-cyclist, more specifically to a kind of helmet that the jaw structure can change the position that protects of the helmet.

Background technology

Racing car and Motor-cyclist must wear the safety of the helmet with the protection head; typical helmet structure comprises helmet shell main body, goggles, guard shield and protects parts such as jaw; wherein goggles, guard shield and protect jaw and be installed on the helmet shell main body; the effect of goggles is the injury that protection people's eyes are not subjected to sunlight and other high lights; the effect of guard shield is to prevent that deleterious particles such as sand and dust from invading in the helmet, and the effect of protecting jaw then is the positions such as chin that can protect the driver when bumping effectively.As everyone knows, the helmet that the tradition band protects the jaw structure is divided into full helmet and two kinds of forms of half helmet, wherein full helmet protect jaw and helmet shell main body usually employing be fastenedly connected or be the frame mode of integral production, in other words protecting jaw is motionless with respect to helmet shell main body, do no doubt simple in structure and safe enough like this, but seem more stiff, under the prerequisite that allows at environment, also must take off the helmet and just can finish suchlike action such as drink water, take on the telephone; And the protecting jaw and can lift of half helmet, but protecting jaw can only arrive when raising near the helmet top usually, protect jaw and be in open state this moment, that is the chin part of the protecting jaw helmet shell main body of can't fitting, though can satisfy demand such as drink water, take on the telephone, travel even under the situation of safety, also should not continue.

In view of this; Spain patent application ES2329494T3 discloses a kind of helmet that the jaw structure can change that protects; it comprises helmet shell main body; protect jaw; two templates; two moving nails and two staples; wherein template is placed on the two sides of helmet shell main body symmetrically respectively; template and helmet shell main body are fastenedly connected into a single integrated structure; offer the track of a grooved shape on the template; described track is docked mutually by the plurality of sections grooved rail and forms; protecting the slide rail that sets out the groove shape on two forks handles of jaw respectively in addition; one end of described staple is fastened on the helmet shell main body; the other end of staple inserts and passes through and protects the jaw fork and be slidingly matched last slide rail and with slide rail; one end of described moving nail with protect jaw and be fastenedly connected; the other end of moving nail then inserts in the track on the template and with track and is slidingly matched; the greatest feature of this technical scheme is that it protects jaw and can change the position as required neatly; promptly can raise the half helmet state that moves to helmet shell main body rear by the full helmet state of protection chin; can between full helmet and half helmet, change in other words, and protect when half helmet that jaw is contained and be fitted in the back upper place of the helmet fully.Yet, technique scheme still has weak point, mainly show fork on offer the groove slide rail and destroyed the intensity of protecting jaw, because the slide rail of groove has not only weakened the composite bending modulus that protects jaw, but also greatly aggravate the trend that stress is concentrated, so when taking place, the bump accident pitches very easily fractureing; In addition, moving nail changes with the distance of staple, when the helmet is in full helmet and these two extreme positions of half helmet, owing to be subjected to the restriction of structure, make the moving nail and the distance of staple must lean on very closely, protect this moment the firm degree of applying of jaw and helmet shell main body and strength ratio a little less than.

Summary of the invention

The utility model provides a kind of variable jaw structure helmet that protects, purpose is to change as required protects the position of jaw with respect to helmet shell main body, to realize the structure conversion between full helmet and half helmet, the anti-intensity that fractures of protecting jaw fork handle can also be strengthened simultaneously effectively, and the firm degree of applying of protecting jaw and helmet shell main body can be improved.

The purpose of this utility model is achieved in that the variable jaw structure helmet that protects, comprise helmet shell main body, protect jaw and two templates, the described jaw that protects has two fork handles, described two templates split the two sides in helmet shell main body, template and helmet shell main body are fastenedly connected or template and helmet shell main body are structure as a whole, it is characterized in that: all offer the track of two grooved shapes on each template, described track is the grooved rail of a complete segment or is formed by plurality of sections grooved rail butt joint; Be provided with four moving nails in addition, wherein per two moving nails and a fork and a template constitute an assembly and merge the same side that is arranged in helmet shell main body; In same assembly, two tracks with template are corresponding one by one respectively for two moving nails, and ends of these two moving nails insert respectively in the pairing separately track, and these two moving other ends of following closely are connected to fork in this assembly again jointly last simultaneously; Protect jaw by pitching driving moving nail, each moving nail, the described convertible position of jaw of protecting under the constraint of moving nail and track along corresponding template orbital motion separately.

Track on two above-mentioned templates is symmetric configuration about the middle plane of helmet shell main body.

The above-mentioned distance that is in two moving nails in the same assembly remains unchanged.

Above-mentioned track has top and two extreme positions of terminal, is leading to top or/and the part track of terminal has gradual ramped shaped rail level structure.

The terminal of a track in two tracks of each above-mentioned template overlaps fully with the top of this track or partially overlaps.

Above-mentioned track has at least two trackside faces of a segment length to form convergent or/and the track width of gradually putting.

Offering on the above-mentioned template contracts allows groove.

Above-mentioned moving nail has the multidiameter neck structure, and the shaft shoulder of described multidiameter neck cooperates with the motion of the rail level of track.

Be provided with dottle pin between above-mentioned fork handle that protects jaw and the template, described dottle pin cooperates with the rail level motion of track.

Above-mentioned dottle pin is solidly connected or they are structure as a whole with moving clenching.

Above-mentioned dottle pin is structure as a whole with the fork handle that protects jaw.

Above-mentioned dottle pin is provided with the duct, and described moving nail passes through this duct.

Above-mentioned moving nail is provided with draw-in groove, and is provided with card and cooperates with this draw-in groove.

The above-mentioned helmet is provided with housing, and described card quilt cover is trapped among between housing and the fork handle.

There is a track to be the loop-like circuit orbit or the arc orbit of open loop shape in two tracks on the above-mentioned same template.

There is a track to be the loop-like elliptical orbit or the elliptic arc track of open loop shape in two tracks on the above-mentioned same template.

There is a track to include the rail that climbs in two tracks on the above-mentioned same template, crosses over rail and falls rail after rise.

Above-mentioned leap rail is circular arc rail or elliptic arc rail.

Above-mentioned falling rail is circular arc rail or elliptic arc rail.

The above-mentioned rail that climbs is circular arc rail or straight line rail.

The above-mentioned rail that climbs includes the starting rail.

Above-mentioned starting rail is straight line rail or circular arc rail.

There is a track to include in two tracks on the above-mentioned same template toward rerail.

Above-mentioned past rerail is the straight line rail.

The above-mentioned track that includes past rerail is the bifurcated rail.

The above-mentioned helmet is provided with switch apparatus, and described switch apparatus is arranged between template and the helmet shell main body, and switch apparatus includes shell fragment, and described shell fragment has heavy allow structure, block and spring-go structure.

The variable jaw structure helmet that protects of the utility model, it cooperates the organization plan of the track on the template by adopting four moving nails, moving nail is followed and is protected jaw and move together, utilize track restrained moving nail and the final movement locus that protects jaw that retrains on the template, realize thus changing as required and protect the function of jaw with respect to helmet shell body position, can accomplish the conversion of the helmet from full helmet structure to half helmet structure, particularly importantly, ES2329494T3 compares with prior art, because the utility model is no longer offered the chute slide rail protecting on the jaw, therefore the composite bending modulus of fork handle is strengthened, so can effectively improve the anti-intensity that fractures of protecting jaw fork handle, in addition, abandon fork, can improve the intensity of protecting jaw equally the chute structure concentrated hidden danger that can also effectively eliminate stress, also have, with same fork two that are connected moving nails are remained the relative distance of length and remain unchanged substantially, so it is more firm to protect the applying of jaw and helmet shell main body, and it is more stable to protect the motion of jaw.

Description of drawings

Fig. 1 is that the variable axle that protects the jaw structure helmet of the utility model is surveyed view;

Fig. 2 is the variable assembling explosive view that protects the jaw structure helmet shown in Figure 1;

Fig. 3 is the variable process status schematic diagram that protects the jaw structure helmet by full helmet structural change to half helmet structure shown in Figure 1;

Movingly when Fig. 4 is the corresponding helmet shown in Figure 3 by full helmet structural change to half helmet structure follow closely change in location state diagram in orbit;

The side schematic view of Fig. 5 when to be that the utility model is variable protect the jaw structure helmet and be in full helmet state;

Fig. 6 is the variable full helmet structure of an embodiment of the jaw structure helmet and the geometrical relationship figure between the half helmet structure of protecting of the utility model;

Fig. 7 is the variable axonometric drawing that protects a kind of formwork structure of the jaw structure helmet of the utility model;

Fig. 8 is the front view of template shown in Figure 7;

Fig. 9 is the K-K cutaway view of template shown in Figure 8;

Figure 10 shows that the variable jaw structure helmet that protects of the utility model has the template of a loop-like circuit orbit and the front view of rail groove thereof;

Figure 11 be the variable moving nail that protects the jaw structure helmet of the utility model with template and protect the jaw fork a generalized section that cooperates embodiment;

Figure 12 be the variable moving nail that protects the jaw structure helmet of the utility model with template and protect the jaw fork another cooperate the generalized section of embodiment;

Figure 13 be the variable moving nail that protects the jaw structure helmet of the utility model with template and protect the jaw fork another cooperate the generalized section of embodiment;

Figure 14 be the variable moving nail that protects the jaw structure helmet of the utility model with template and protect the jaw fork another cooperate the generalized section of embodiment;

To be that the utility model is variable protect the schematic diagram that the jaw structure helmet includes an embodiment of convergent-divergent track width to Figure 15;

Figure 16 is that the variable jaw structure helmet that protects of the utility model includes the template of an open loop shape arc orbit and the front view of rail groove thereof;

Figure 17 is that the variable jaw structure helmet that protects of the utility model includes the template of a loop-like elliptical orbit and the front view of rail groove thereof;

Figure 18 is that the variable jaw structure helmet that protects of the utility model includes the template of an open loop shape elliptic arc track and the front view of rail groove thereof;

Figure 19 is that the variable jaw structure helmet that protects of the utility model includes another template of an open loop shape elliptic arc track and the front view of rail groove thereof;

Figure 20 is that the variable jaw structure helmet that protects of the utility model is divided the rail that climbs, crosses over rail and fallen the template of rail and the front view of rail groove thereof after rise;

Figure 21 is that the variable jaw structure helmet that protects of the utility model is divided the rail that climbs, crosses over rail and fallen another template of rail and the front view of rail groove thereof after rise;

Figure 22 is that the variable jaw structure helmet that protects of the utility model includes the template of straight line starting rail and the front view of rail groove thereof;

Figure 23 is that the variable jaw structure helmet that protects of the utility model includes the template of circular arc starting rail and the front view of rail groove thereof;

Figure 24 is that the variable jaw structure helmet that protects of the utility model includes the template of linear reciprocation rail and the front view of rail groove thereof;

Figure 25 is that the variable jaw structure helmet that protects of the utility model includes curve toward the template of rerail and the front view of rail groove thereof;

Figure 26 is a template shown in Figure 24 when the helmet moving nail motion state diagram in orbit during from full helmet structural change to half helmet structure;

Figure 27 is that the variable jaw structure helmet that protects of the utility model has the embodiment template of bifurcated rail and the front view of rail groove thereof;

Figure 28 is that the variable jaw structure helmet that protects of the utility model has another embodiment template of bifurcated rail and the front view of rail groove and the signal of switch apparatus position thereof;

Figure 29 is that the variable jaw structure helmet that protects of the utility model has another embodiment template of bifurcated rail and the front view of rail groove thereof;

To be that the utility model is variable protect structure and the state diagram that the jaw structure helmet has an embodiment of switch apparatus to Figure 30;

Figure 31 is a template shown in Figure 28 when the helmet moving nail motion state diagram in orbit during from full helmet structural change to half helmet structure.

The specific embodiment

With specific embodiment the utility model is further described below, referring to Fig. 1-31:

The variable jaw structure helmet that protects comprises: helmet shell main body 1, protect jaw 2 and two templates 3, the described jaw 2 that protects has two forks 2a, and described two templates 3 split the two sides in helmet shell main body 1; Greatest feature of the present utility model is: the track (41 that all offers two grooved shapes on each template 3,42), described track (41,42) each the bar track in all can be made of (promptly this section grooved rail generates by same regular method) the grooved rail of a complete segment, also can form (promptly the grooved rail section that is generated by different rules connects into combined orbit) by the butt joint of plurality of sections grooved rail, with Figure 10 is example, track 41 is the circular grooved rail of a complete segment, track 42 is then by straight line grooved rail (42c, 42g), transition grooved rail (42d, 42f) and circular arc grooved rail 42e the butt joint of totally five sections grooved rails form, but in Figure 21,41 on track includes the multistage grooved rail, track 42 then has only one section grooved rail, also be provided with four moving nails 5 of template 3 motions relatively in addition, 5 and forks of wherein per two moving nails constitute the same side that assembly merging is arranged in helmet shell main body 1 to 2a and a template 3, the fork that one end of two of same assembly moving nails 5 is connected this group is gone up 2a and can follow this fork 2a is moved together, and the other end of these two moving nails 5 then respectively inserts respectively to move in track 41 on the same template 3 and the track 42 and with these tracks works and cooperates; Need to prove, template 3 can adopt the mode or the template 3 that are fastenedly connected simply to be the part of helmet shell main body 1 with helmet shell main body 1, that is they can adopt integrative-structure, its connection can be adopted screw, rivet, welding, eye-splice, the fastening means that various prior art such as left-hand thread is adopted, in addition, template 3 both can be that monolithic construction also can be a split-type structural, and when template 3 adopts split-type structural, template 3 can be assembled by several parts, template 3 as shown in Figure 2 is promptly by outer template 3a, interior template 3b and base plate 3c constitute, and its middle orbit 41 is made of the type groove that outer template 3a and interior template 3b form; Also need to prove, track (41,42) each the bar track in all includes two trackside face A, on the template 3 near and along track (41,42) that a part of outer surface that launches along the line is called rail level B(with reference to Fig. 7 to Fig. 9, Figure 11 and Figure 12), described rail level B allows to adopt frame modes such as transition cambered surface or transition chamfering to intersect or be connected with two trackside face A, the optimal layout that constitutes two trackside face A of same track is their common vertically middle plane S of helmet shell main body 1, and these two trackside face A are equidistant surface each other, certainly, other layout of two trackside face A also is fine, here, the middle plane S of said helmet shell main body 1 is meant such face: referring to Fig. 1, it is the vertical section of the helmet, and spine top through the helmet, some characteristic feature points or position on two sides of the helmet two side surfaces of people's ear (when promptly wearing corresponding to), distribute in the face of claiming about this such as the hinge hole of snapping goggles 6 and guard shield 7 or lug etc., generally, middle plane S is through the remarkable back side of head, the forehead top, a helmet plane of symmetry of nose and mouth; In addition, constitute two trackside face A of same track or the outer surface of its elongated surfaces and template 3 (referring to comprise that side surface of rail level B) or its elongated surfaces and have two intersection L1, simultaneously on the above-mentioned outer surface of template 3 or its elongated surfaces, have a neutrality line corresponding to these two intersection L1, this neutrality line is referred to as trajectory C(referring to Fig. 8 to Figure 12), described intersection L1 and trajectory C satisfy following rule: it is all tangent with described two intersection L1 that promptly a ball while a bit can be done and can only do to certain on the mistake trajectory C, this moment, the line at these two point of contacts was promptly represented the track width of track (41,42) in this position; Described trajectory C has described the movement locus of moving nail 5, and on behalf of moving nail 5, trajectory C be subjected to about beam trajectory of track (41,42) in other words; Need to prove at last, moving nail 5 can be screw, double-screw bolt, pin or the double end riveting post with various form of fractures, its best cross-sectional form is circle, ellipse, rectangle and polygon, also allows to adopt the form of circular arc chamfering that its seamed edge is handled when adopting rectangle or polygon cross section; It must be noted that, moving nail 5 in the utility model can be that to be fastenedly connected also can be to connect movingly with protecting being connected of jaw 2, but the axes O 5 of moving nail 5 preferably remains unchanged with respect to the position of protecting jaw 2 and (but allows to exist because foozle, rigging error, temperature rise distortion and stress deformation and the small variations that causes), these positions that also mean the axes O 5 of two moving nails 5 that 2a are connected with same fork also remain unchanged each other substantially, perhaps generally the distance of two moving nails 5 remains unchanged, certainly, when fork deforms 2a, the utility model allows the relative position of the axes O 5 of these two screws 5 to change, here, what is called is fastenedly connected and is meant moving nail 5 and protects jaw 2 for stationary fit or simply will move nail 5 and protect jaw 2 and be made of one structure, so-called connect movingly be meant moving nail 5 with protect jaw 2 can be for matched in clearance that is moving nail 5 with respect to protecting play or the rotation that certain amplitude take place jaw 2; Obviously, in the same assembly two moving nails 5 are subjected to the track 41 on the same template 3 and the constraint of track 42 respectively, because these two moving nails 5 are connected 2a with same fork again simultaneously, notice that template 3 and helmet shell main body 1 are for being fastenedly connected or being structure as a whole, therefore when lifting when protecting jaw 2, each fork 2a drive on it two moving nails 5 respectively track 41 and the track 42 on the corresponding template 3 move, otherwise when jaw 2 is protected in recovery, each fork orders about on it two to 2a again and movingly follows closely 5 and return along track 41 and track 42 former roads, be not difficult to find, be arranged on the track (41 on the template 3,42) retrained the motion of moving nail 5 and finally retrained the movement locus that protects jaw 2, in other words the utility model can be realized changing as required and protect the function of jaw 2 with respect to helmet shell main body 1 position, also can realize the mutual conversion between full helmet structure and the half helmet structure, and the chin 2c that can accomplish to protect jaw 2 when half helmet state takes in and the outer surface of the helmet shell main body 1 of fitting, undoubtedly, no matter raise or reclaim and protect jaw 2, protect jaw 2 and in the motion way, all must cross over goggles 6 and guard shield 7, protecting jaw 2 simultaneously, also to have two extreme positions be full helmet state position and half helmet state position (referring to Fig. 6), when it is in full helmet state position to existing fixedly to protect the jaw helmet similar, at this moment can effectively protect the driver when bumping, not come to harm, similar to existing half helmet helmet when it is in half helmet state, do not influence the driver and do various drinking water and action such as conversation; Fig. 3 has provided the variable process status schematic diagram that protects the jaw structure helmet by full helmet structural change to half helmet structure of the utility model; Fig. 4 then be corresponding diagram 3 protect jaw 2 when different conditions moving nail 5 at track (41; 42) Nei change in location situation; wherein Fig. 3 (a) and Fig. 4 (a) are full helmet state; the jaw 2 that protects of this moment is in protective position; Fig. 3 (b) and Fig. 4 (b) state for raising; protect jaw 2 and begin to climb this moment; Fig. 3 (c) and Fig. 4 (c); Fig. 3 (d) and Fig. 4 (d) are the leap state; protect jaw 2 this moment and cross over goggles 6 and guard shield 7; Fig. 3 (e) and Fig. 4 (e) are half helmet state, and protect jaw 2 and take in applying helmet shell main body 1 this moment.

Track (41,42) between two templates 3 of the present utility model can also be asymmetric layout for symmetric configuration, is the best to adopt symmetric configuration wherein, because the structure of the helmet is the simplest and to protect the motion of jaw 2 the most stable at this moment; Need to prove especially, the track (41 of said two templates 3 of the utility model, 42) being symmetric configuration about the middle plane S of helmet shell main body 1 is meant: with the track (41 on each template 3,42) trajectory C while upright projection is to the middle plane S of helmet shell main body 1, the trajectory projection of its respective carter overlaps fully or a trajectory projection is contained fully by the projection of another trajectory, specifically the orthographic projection of the trajectory C of the track 41 of two templates 3 on middle plane S overlap fully or wherein a trajectory projection contained fully by another trajectory projection, the orthographic projection of trajectory C on middle plane S of the track 42 of two templates 3 simultaneously also overlap fully or wherein a trajectory projection contained fully by another trajectory projection, be meant that two projection lines have the branch of length but short projection line drops within the long projection line with overlapping fully so-called the containing; It is to be noted, track (41 in the utility model on said two templates 3,42) be symmetric configuration just at their trajectory C about the middle plane S of helmet shell main body 1, and do not require the track width of two each respective carter on the template 3 and length must equate fully or complete symmetry, that is allow to be in respectively two tracks 41 on the template 3 and can have unequal and asymmetric track width and length, similarly be in two tracks 42 on the template 3 respectively and also can have unequal and asymmetric track width and length, even be in track 41 and track 42 on the same template 3 in fact, also allow their track width different.

In the utility model, track (41,42) can be set to have top (41a, 42a) and terminal (41b, 42b) the track of two extreme positions, its best circumstance is: 2a is connected with same fork simultaneously two moving follows closely 5, another just in time is on the top 42a with moving nail 5 that track 42 is done to cooperate when the moving nail 5 that cooperates with track 41 is in top 41a, the moving nail 5 of another that do to cooperate with track 42 when the moving nail 5 that cooperates with track 41 is in terminal 41b then is on the terminal 42b just, and vice versa; Obviously, when moving nail 5 is in top (41a, in the time of 42a), can design accordingly and protect jaw 2 and be the position of full helmet state, and be in terminal (41b when moving nail 5, in the time of 42b), then can design accordingly and protect jaw 2 and be in half helmet state position, to protect jaw 2 and can be adjacent to helmet shell main body 1 securely when full helmet state and these two extreme positions of half helmet state in order to make, can be with track (41,42) lead to top (41a, 42a) or/and terminal (41b, part track 42b) make have gradual ramped shaped rail level B structure (referring to Fig. 7, Fig. 8 and Fig. 9), can utilize the rail level B of sinking like this and will pitch 2a drawn to sink and be adjacent on the surface of template 3 by moving nail 5, in other words this structure can make protects jaw 2 and fits tightlyer with helmet shell main body 1, need to prove, the top 41a of track 41 and terminal 41b can overlap (as shown in figure 22) and also can not overlap (as shown in Figure 8).

In the utility model, article two, track (41, the terminal 41b of a track 41 42) can partially overlap and can also overlap fully with its top 41a, certainly terminal 41b and top 41a can also not occur simultaneously fully, Figure 10 shows that the situation that overlaps fully, shown in Figure 15 then is the example that does not have common factor fully; Obviously, when terminal 41b overlaps fully with top 41a, the trajectory C of track 41 is trajectory C loop-like but track 42 and is necessary for the open loop shape, this moment, there was the coincide point P that crosses in the trajectory C of track 41 at top 41a and terminal 41b, best P point can be definite like this: referring to Fig. 6, at first the supposition axes O 5 of protecting the moving nail 5 that cooperates with track 42 when jaw 2 is in full helmet state is in M point position, the axes O 5 of protecting the moving nail 5 that cooperates with track 42 when jaw 2 is in half helmet state is in N point position, jaw 2 is protected in supposition simultaneously, and to raise the angle that relative helmet shell main body 1 turns over when moving to half helmet state from full helmet state be β, then allowing line segment MN press around M protects jaw 2 and raises travel direction and rotate 90 °-β/2 degree backs and be the P point with the intersection points of the perpendicular bisector L of MN line segment, it must be noted that, when track 41 is got closed loop tracks, if the moving nail of doing to cooperate with track 42 5 is in M point or N point position, then Ci Shi P point is with track 41 and makes the location point that the axes O 5 of the moving nail 5 that cooperates is passed through, and in other words can cook up the moving nail 5 that cooperates with track 41 works to the position on the 2a and the design rotational angle that protects jaw 2 by the moving nail 5 that cooperates with track 42 at fork and pitch the position on the 2a; Need to prove that M point and N point should be on the trajectory C of track 42, but the M point can overlap also and can not overlap with the terminal 42b of track 42 with top 42a, the N point of track 42.

In the utility model, constitute two trackside face A of same track can be equidistant mutually or parallel can be not equidistant or not parallel mutually yet, in fact follow closely 5 along track (41 when moving, 42) carry out when mobile, in order to increase the kinetic stability of moving nail 5, can be at track 41 or/and wedge shape be made with above-mentioned trackside face A in some highway section on the track 42, that is track 41 is or/and track 42 has at least two trackside face A of a segment length to form convergent or/and the track width of gradually putting, because two of operation moving nails 5 on two tracks 41 on the same template 3 and track 42, the direction of motion that moves to two moving nails 5 when them just in time on the contrary or during roughly opposite position (such as protect that jaw 2 is in the medium position of striding the jacking journey and when neighbouring), if track 41 and track 42 radius of curvature herein design more approachingly, the direction of motion that then causes being in the motion nail 5 on the track 42 under the influence of protecting the active force that jaw 2 applies easily is reverse suddenly, that is unsettled phenomenon appears, take place for fear of this situation, can be with track (41, two trackside face A of a part 42) make convergent or/and the track width of gradually putting, with Figure 15 is example, track 42 is the trend that increases gradually from its track width of highway section of U42 → W42, track 42 is diminishing trend from its track width of highway section of W42 → V42, track 41 is the trend that increases gradually from its track width of highway section of U41 → W41, track 41 is diminishing trend from its track width of highway section of W41 → V41, undoubtedly, above-mentioned track planning can allow nail 5 slide to W41 and W42 point rapidly, and under action of inertia, cross these and put the position, no matter protecting jaw 2 is to be raised to half helmet state or from half helmet state by full helmet state to be recycled to full helmet state, moving nail 5 all can obtain above-mentioned effect through W41 and W42 point the time, that is its stability is higher; It is to be noted, convergent track width and gradually put track width and can be arranged on the track 41 separately or be arranged on separately on the track 42 and can also on track 41 and track 42, all be provided with simultaneously, both can be the convergent track width of single form or gradually put track width, and also can adopt the convergent track width of other various ways simultaneously or gradually put track width.

Can offering on the template 3 of the present utility model contracts allows groove 12, described contracting allows groove 12 can be arranged in track (41,42) by the avris, can monolateral layout also can bilaterally arrange, its function is to increase track (41,42) elasticity, so that moving nail 5 can more successfully and stably move, this moment certain section track (41,42) track width can be slightly small in the journal size of moving nail 5 on orbital position, that is moving nail 5 belongs to interference fit with track (41,42) in a certain segment length scope, this moment, moving nail 5 two trackside face A that need strut track (41,42) by force can pass through; Need to prove, template 3 itself can adopt elastomeric material to make, allow the structure of groove 12 even not adopting contracts, track disposed thereon (41,42) can also be carried out interference fit with moving nail 5, and adopting certainly contracts allows groove 12 back tracks (41,42) elasticity is bigger, correspondingly can get bigger matching allowance, this helps improving the kinetic stability of moving nail 5 more for the situation that has convergent or gradually put track width.

Moving nail 5 in the utility model can adopt the structure with multidiameter neck, so-called multidiameter neck structure is meant that there is the transverse cross-sectional profile that varies in size and be the step sudden change in moving nail 5 along the diverse location of its axes O 5, when being its main body with cylinder as moving nail 5, multidiameter neck promptly refers to that there is the shaft part of two above different-diameters at least in nail 5, obviously, adopt the multidiameter neck structure will protect jaw 2 and fork thereof being spaced a proper distance between 2a and template 3 and the helmet shell main body 1, can when shifting one's position, jaw 2 avoid itself and template 3 or helmet shell main body 1 to interfere protecting like this, can also effectively reduce simultaneously the contact area of itself and template 3 and helmet shell main body 1, further can reduce resistance, the moving just nail 5 that Figure 11 provides has the situation of multidiameter neck, find out easily, move the shaft shoulder and the track (41 of nail 5 this moment, 42) rail level B is slidingly matched, and fork is separated passive nail 5 between 2a and template 3 and the helmet shell main body 1 certain for δ 1 simultaneously; Need to prove, moving nail 5 both can slide with respect to trackside face A and also can roll or both have both at the same time, and changeed sliding (moving nail 5 center on self axes O 5 have certain rotation phenomenon) or two states all can exist simultaneously and can be level and smooth (moving nail 5 around self axes O 5 do not have rotation phenomenon) also can be the shaft shoulder and cooperating of rail level B.

The fork that protects jaw 2 of the present utility model is being provided with dottle pin 2b between 2a and the template 3, and as Figure 12 and shown in Figure 13, the rail level B of described dottle pin 2b and track (41,42) motion cooperates (comprising level and smooth sliding with commentaries on classics); Obviously, because the existence of dottle pin 2b, fork is certain for δ 2 being separated out between the main body of 2a and template 3 and the helmet shell main body 1, therefore can avoid protecting jaw 2 equally and interfere when shifting one's position with because of template 3 and helmet shell main body 1, the contact area that also can reduce them simultaneously is to reduce the resistance of motion; It is pointed out that the utility model is said is provided with dottle pin 2b at fork between 2a and template 3 and includes two kinds of situations: first kind of situation is that dottle pin 2b pitches the part of 2a, that is they are structure as a whole (as shown in figure 12); Second kind of situation is that dottle pin 2b is an independent component, and it is done circlewise, then it is arranged on fork between 2a and the template 3 (as shown in figure 13), and dottle pin 2b can be fastenedly connected 2a also and can be connected for loosening with fork this moment; Special needs to be pointed out is that dottle pin 2b can also put in the track (41,42) and be slidingly matched or roll with trackside face A and cooperate or cooperations (as shown in figure 14) of not only having slided but also had rolled, move at this moment and follow closely 5 conductor rail side A not; It is pointed out that also dottle pin 2b and moving nail 5 can adopt immovable fitting or both to be structure as a whole, in addition can also be loose fit.

Dottle pin 2b of the present utility model can be provided with the duct, and this moment, moving nail 5 passed through the duct of dottle pin 2b; Moving nail 5 of the present utility model can be provided with draw-in groove 5a, and is provided with card 8 in addition, and card 8 can be provided with draw-in groove 8a, and cooperates (extremely shown in Figure 14 as Fig. 2, Figure 11) with the draw-in groove 5a of described moving nail 5 by draw-in groove 8a, in case stop nail 5 gets loose; The utility model can also be provided with housing 9, and described housing 9 is fastenedly connected 2a snapping or employing alternate manner with fork, and described card 8 quilt covers are trapped among housing 9 and pitch between the 2a.

Track of the present utility model (41,42) can have various ways, and division is as follows:

1) described track 41 is the loop-like circuit orbit (as shown in figure 10) or the arc orbit (as shown in figure 16) of open loop shape, so-called circuit orbit is meant that with 41 orthographic projections of the track on the template 3 circular rule is satisfied in the projection that its trajectory C is obtained to the middle plane S of helmet shell main body 1 on middle plane S; So-called arc orbit is meant that with 41 orthographic projections of the track on the template 3 the circular arc rule is satisfied in the projection that its trajectory C is obtained to the middle plane S of helmet shell main body 1 on middle plane S; Obviously, circuit orbit belongs to closed loop tracks, and arc orbit belongs to the open loop track; It is to be noted, for finish with protect jaw 2 from full helmet state variation to half helmet state, track 42 should be made open track that is non-case type track, this moment, track 42 can also can form (as Figure 10 and shown in Figure 16) by the butt joint of multistage grooved rail for one section complete grooved rail (not shown).

2) described track 41 is the loop-like elliptical orbit (as shown in figure 17) or the elliptic arc track (as shown in figure 18) of open loop shape, so-called elliptical orbit is meant 41 orthographic projections of the track on the template 3 to the middle plane S of helmet shell main body 1, oval rule is satisfied in the projection of its trajectory C on middle plane S, so-called elliptic arc track is meant that with 41 orthographic projections of the track on the template 3 the elliptic arc rule is satisfied in the projection of its trajectory C on middle plane S to the middle plane S of helmet shell main body 1; It is to be noted, said ellipse of the utility model and elliptic arc also comprise various types of ellipse except that meeting the elliptic equation rule, so-called class ellipse is meant that the projection of trajectory C on middle plane S can be the class ellipticity curve of simple harmonic curve equation, spline function equation even the class ellipticity curve (not shown) that can also be formed by connecting by the multistage curve; Obviously, elliptical orbit belongs to closed loop tracks, and the elliptic arc track belongs to the open loop track; As previously mentioned; finish from full helmet state variation to half helmet state in order to ensure protecting jaw 2; it is non-case type track that track 42 also should be made opening track, and track 42 can also can form (as Figure 17 and shown in Figure 180) by the butt joint of multistage grooved rail for one section complete grooved rail (as shown in figure 19).

3) described track 41 can be decomposed into the rail that climbs, crosses over rail and fall rail totally three parts after rise, protecting jaw 2 accordingly climbs, crosses over and action such as falling, need to prove, even the track that track 41 is the single rule grooved rail of a complete segment to be constituted (circuit orbit as shown in figure 10, arc-shaped rail shown in Figure 16, elliptical orbit shown in Figure 17 and elliptic arc track shown in Figure 180 or the like) also can be made above division; Raise to half helmet state from full helmet state corresponding to protecting jaw 2: what is called is climbed and is meant that the chin 2c that protects jaw 2 is begun the process of also progressively drawing back with helmet shell main body 1 distance to breaking away from by the full helmet state that is adjacent to helmet shell main body 1, this moment, moving nail 5 tracks of passing by 41 highway sections were the rail that climbs, the so-called leap is meant that the chin 2c that protects jaw 2 crosses the process of goggles 6 and guard shield 7 (guard shield 7 of this moment is in the state of raising fully or partly raising), this moment, moving nail 5 tracks of passing by 41 highway sections were the leap rail, and so-called falling the after rise is meant that the chin 2c that protects jaw 2 begins progressively to take in and finally be adjacent to the process of helmet shell main body 1, this moment, moving nail 5 tracks of passing by 41 highway sections were for falling rail after rise; Obviously, reclaim when moving to full helmet state from half helmet state when protecting jaw 2, the differentiation of said process is just in time opposite; Special needs to be pointed out is, the rail that climbs of track 41, crossing over rail can be made up of the grooved rail of different rules jointly with the falling rail, the grooved rail that is the straight line rail that can include straightway such as the rail that climbs, the grooved rail that perhaps includes arc section is the circular arc rail, cross over rail and fall rail after rise and then can include the circular arc rail or include the elliptic arc rail, what Figure 20 and Figure 21 provided is exactly by three sections major trough rail A41, B41 and C41 form track 41 in conjunction with some transition grooved rail D41 again, the A41 correspondence rail that climbs wherein, the corresponding rail of crossing over of B41, the corresponding rail that falls after rise of C41, these grooved rails can be that the straight line grooved rail also can be that the circular arc grooved rail can also be the curve grooved rail, and this moment, track 41 can be that loop-like (shown in Figure 20) also can be open loop shape (shown in Figure 21); Especially, when crossing over rail and fall rail employing circular arc rail or elliptic arc rail after rise, they can be made the grooved rail of unified rule, what Figure 22 and Figure 23 provided is to cross over rail and fall the example that rail is all a circular arc rail after rise.

4) the described rail that climbs includes starting rail 41c, promptly protect jaw 2 from full helmet state setting in motion when climbing rail, moving nail 5 those track sections of on track 41, passing by, starting rail 41c cooperates the deliver from vault action of protecting jaw 2, comprise allowing goggles 6 and guard shield 7 have time enough to finish from unblanking, bounce up the course of action of top set, goggles 6 and guard shield 7 are by being closed into the process of opening fully in other words; When the moving nail 5 that cooperates with track 41 works moved in starting rail 41c, the moving nail 5 that cooperates with track 42 works rested on substantially and does not move (promptly resting on M point place) on the track 42 or have only very little moving; Need to prove that starting rail 41c can be provided with specially also and it can be fused within the rail that climbs of track 41, can be that one section complete grooved rail also can be made of the multistage grooved rail; Especially, starting rail 41c can be done the form of be in line rail or circular arc rail, layout is got up convenient like this, starting rail 41c among Figure 22 is the form of straight line rail, starting rail 41c shown in Figure 23 then is the form of circular arc rail, this moment the center of circle M point that preferably drops on track 42 of circular arc go up, the arc radius R of starting rail 41c just in time equals same fork and two on the 2a are moved follows closely 5 wheelbases.

5) described track 41 includes toward rerail 41d, be meant toward rerail 41d and protect jaw 2 merely from the motion stagnantly when not raising of full helmet state to half helmet state, there is round phenomenon in the moving nail of doing to cooperate with track 41 5 at the system-wide section or a certain section of track 41, simultaneously, do not reclaim stagnantly when moving to full helmet state from half helmet state merely when protecting jaw 2, also there is round phenomenon in moving nail 5 system-wide section or a certain sections at track 41; Toward rerail 41d can be that its trajectory C is straightway (referring to Figure 24) for the straight line rail, can also be that its trajectory C is curved section (referring to Figure 25) for the curve rail toward rerail 41d; Especially, if track 41 is made the rail that climbs, cross over rail and fall rail after rise when dividing, they can be synthesized one toward rerail 41d, that is track 41 is a pure past rerail 41d, the top 41a and the terminal 41b of track 41 can overlap (as Figure 24 and shown in Figure 25) and also can not overlap (not shown) at this moment, Figure 26 provides when being track 41 for the past rerail 41d of straight line section, correspondence is protected jaw 2 and is raised the half helmet state that moves to by full helmet state, moving nail 5 view at diverse location, wherein Figure 26 (a) correspondence is protected jaw 2 and is in full helmet state, Figure 26 (b) correspondence is protected jaw 2 and is in the state that climbs, Figure 26 (c) correspondence is protected the state that jaw 2 is in leap, Figure 26 (d) correspondence is protected the state that jaw 2 is in falling, Figure 26 (e) correspondence is protected jaw 2 and is in half helmet state, is not difficult to find that there is round phenomenon in moving nail 5 in track 41; Certainly, include toward the track 41 of rerail 41d and can also make the bifurcated rail, the layout of promptly climb rail, crossing over rail and falling rail after rise is the bifurcation structure shape, Figure 27, Figure 28 and Figure 29 have provided three kinds of typical bifurcated rail schematic diagrames, the rail and reclaim rail of climbing of Figure 27 wherein based on straight rail, the rail and reclaim rail of climbing of Figure 28 then based on the circular arc rail, the rail that climbs of Figure 29 then includes a bit of starting rail 41c, it is to be noted, the form of bifurcated rail can also be other forms, here just enumerates no longer one by one.

For the bifurcated rail that includes toward rerail 41d, switch apparatus can be set prevent that stop nail 5 misoperation occurs at the place, fork, switch apparatus is arranged between template 3 and the helmet shell main body 1, and it includes shell fragment 13, and the material of shell fragment 13 can be that metal also can be that plastics can also be composites; Described shell fragment 13 has the heavy structure 13a that allows, block 13b and spring-go structure 13c(see Figure 29), two moving nails 5 for same assembly, when when chin 2c that moving nail 5 farthest passes through spring-go structure 13c, referring to Figure 30 (b), it is heavy that shell fragment 13 should movingly be followed closely 5 pressures, drive block 13b simultaneously, and sink to and be enough to allow from those nearest moving nail 5 amplitudes that can pass through of chin 2c, and it is heavy when allowing structure 13a when moving to from chin 2c moving nail 5 farthest, referring to Figure 30 (a), block 13b relies on self elasticity or upsprings by spring, and stops from the moving nail of nearest that of chin 2c 5 current; Need to prove that above-mentioned switch apparatus can be by being tightened on the securing members such as screw and riveted joint on template 3 or the helmet shell main body 1, its best mode is to adopt the structure of snapping to be fastened on the helmet shell main body 1; Figure 31 provides is that correspondence is protected jaw 2 and raised the half helmet state that moves to by full helmet state, moving nail 5 view at diverse location, Figure 31 (a) correspondence is protected jaw 2 and is in full helmet state, Figure 31 (b) correspondence is protected jaw 2 and is in the state that climbs, Figure 31 (c) correspondence is protected the state that jaw 2 is in leap, Figure 31 (d) correspondence is protected the state that jaw 2 is in falling, and Figure 31 (e) correspondence is protected jaw 2 and is in half helmet state, is not difficult to find that there is round phenomenon in moving nail 5 in track 41.

It must be noted that, above-mentioned track 41 can exchange the role with track 42, that is can be from the position, function, shape and form exchange also and can realize the purpose of this utility model, but its prerequisite is track 41 and the track 42 that splits on the template 3 of helmet shell main body 1 both sides, must carry out the exchange of identical rule simultaneously.

The variable jaw structure helmet that protects of the utility model, its track (41 by adopting four moving nails 5 to cooperate on the template 3,42) organization plan, moving nail 5 is followed and is protected jaw 2 and move together, utilize the track (41 on the template 3,42) movement locus of jaw 2 is protected in moving nail 5 of constraint and final constraint, realized changing as required the function of protecting jaw 2 relative helmet shell main bodys 1 position thus, can realize the mutual conversion of full helmet structure and half helmet structure, and when half helmet state, can guarantee to protect jaw 2 and take in and be adjacent to helmet shell main body 1; What is more important, ES2329494T3 compares with prior art, and there is following marked improvement at least in the utility model: 1) do not have the chute structure on the jaw 2 protecting, so fork is strengthened the composite bending modulus of 2a, effectively improved and pitched the anti-intensity that fractures of 2a; 2) abandon the chute structure and eliminated the hidden danger that stress is concentrated effectively, improved the intensity of protecting jaw 2 equally; 3) same fork remains certain distance to two on the 2a moving nails 5, so when full helmet and half helmet structure, the applying of protecting jaw 2 and helmet shell main body 1 is more firm, and it is more stable to protect the motion of jaw 2.

The foregoing description only is some preferred embodiments of the present utility model; be not to limit protection domain of the present utility model according to this; so: all various equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1. the variable jaw structure helmet that protects, it comprises helmet shell main body, protects jaw and two templates, the described jaw that protects has two fork handles, described two templates split the two sides in helmet shell main body, template and helmet shell main body are fastenedly connected or template and helmet shell main body are structure as a whole, it is characterized in that: all offer the track of two grooved shapes on each template, described track is the grooved rail of a complete segment or is formed by plurality of sections grooved rail butt joint; Be provided with four moving nails in addition, wherein per two moving nails and a fork and a template constitute an assembly and merge the same side that is arranged in helmet shell main body; In same assembly, two tracks with template are corresponding one by one respectively for two moving nails, and ends of these two moving nails insert respectively in the pairing separately track, and these two moving other ends of following closely are connected to fork in this assembly again jointly last simultaneously; Protect jaw by pitching driving moving nail, each moving nail, the described convertible position of jaw of protecting under the constraint of moving nail and track along corresponding template orbital motion separately.

2. the variable jaw structure helmet that protects according to claim 1, it is characterized in that: the track on described two templates is symmetric configuration about the middle plane of helmet shell main body.

3. the variable jaw structure helmet that protects according to claim 1 is characterized in that: the distance that is in two moving nails in the same assembly remains unchanged.

4. the variable jaw structure helmet that protects according to claim 1 is characterized in that: described track has top and two extreme positions of terminal, is leading to top or/and the part track of terminal has gradual ramped shaped rail level structure.

5. the variable jaw structure helmet that protects according to claim 4, it is characterized in that: the terminal of a track in two tracks of each template overlaps fully with the top of this track or partially overlaps.

6. according to each described variable jaw structure helmet that protects in the claim 1 to 5, it is characterized in that: described track has at least two trackside faces of a segment length to form convergent or/and the track width of gradually putting.

7. according to each described variable jaw structure helmet that protects in the claim 1 to 5, it is characterized in that: offering on the described template contracts allows groove.

8. according to each described variable jaw structure helmet that protects in the claim 1 to 5, it is characterized in that: described moving nail has the multidiameter neck structure, and the shaft shoulder of described multidiameter neck cooperates with the motion of the rail level of track.

9. according to each described variable jaw structure helmet that protects in the claim 1 to 5, it is characterized in that: be provided with dottle pin between fork handle that protects jaw and template, described dottle pin cooperates with the rail level motion of track.

10. the variable jaw structure helmet that protects according to claim 9 is characterized in that: described dottle pin is solidly connected or they are structure as a whole with moving clenching.

11. the variable jaw structure helmet that protects according to claim 9 is characterized in that: described dottle pin is structure as a whole with the fork handle that protects jaw.

12. the variable jaw structure helmet that protects according to claim 11, it is characterized in that: described dottle pin is provided with the duct, and described moving nail passes through this duct.

13. the variable jaw structure helmet that protects according to claim 12 is characterized in that: described moving nailing on is provided with draw-in groove, and is provided with card and cooperates with this draw-in groove.

14. the variable jaw structure helmet that protects according to claim 13 is characterized in that: be provided with housing, described card quilt cover is trapped among between housing and the fork handle.

15., it is characterized in that: have a track to be the loop-like circuit orbit or the arc orbit of open loop shape in two tracks on the same template according to each described variable jaw structure helmet that protects in the claim 1 to 5.

16., it is characterized in that: have a track to be the loop-like elliptical orbit or the elliptic arc track of open loop shape in two tracks on the same template according to each described variable jaw structure helmet that protects in the claim 1 to 5.

17., it is characterized in that: have a track to include the rail that climbs in two tracks on the same template, cross over rail and fall rail after rise according to each described variable jaw structure helmet that protects in the claim 1 to 5.

18. the variable jaw structure helmet that protects according to claim 17, it is characterized in that: described leap rail is circular arc rail or elliptic arc rail.

19. the variable jaw structure helmet that protects according to claim 17, it is characterized in that: described falling rail is circular arc rail or elliptic arc rail.

20. the variable jaw structure helmet that protects according to claim 17, it is characterized in that: the described rail that climbs is circular arc rail or straight line rail.

21. the variable jaw structure helmet that protects according to claim 17, it is characterized in that: the described rail that climbs includes the starting rail.

22. the variable jaw structure helmet that protects according to claim 21, it is characterized in that: described starting rail is straight line rail or circular arc rail.

23., it is characterized in that: there is a track to include in two tracks on the same template toward rerail according to each described variable jaw structure helmet that protects in the claim 1 to 5.

24. the variable jaw structure helmet that protects according to claim 23 is characterized in that: described is the straight line rail toward rerail.

25. the variable jaw structure helmet that protects according to claim 23 is characterized in that: including toward the track of rerail is the bifurcated rail.

26. the variable jaw structure helmet that protects according to claim 25, it is characterized in that: be provided with switch apparatus, described switch apparatus is arranged between template and the helmet shell main body, and switch apparatus includes shell fragment, and described shell fragment has heavy allow structure, block and spring-go structure.