WO2012062114A1

WO2012062114A1 - Changeable jaw-protecting helmet

Info

Publication number: WO2012062114A1
Application number: PCT/CN2011/076064
Authority: WO
Inventors: 廖汝甜
Original assignee: 江门市鹏程头盔有限公司
Priority date: 2010-11-10
Filing date: 2011-06-21
Publication date: 2012-05-18
Also published as: CN101991208A; CN101991208B; EP2478785A1; EP2478785B1; EP2478785A4; ES2469375T3

Abstract

A changeable jaw-protecting helmet comprises a helmet shell main body(1), a jaw protector(2) and two pattern plates (3).The jaw protector(2) is provided with two fork handles(2a). The two pattern plates (3) are respectively arranged at the two sides of the helmet shell main body (1). The pattern plates are fastened and connected with the helmet shell main body (1) or the pattern plates (3) are connected with the helmet main body(1) integrally. Each pattern plate (3) is provided with two groove-shaped tracks and is additionally provided with four moving nails. One end of each moving nail is inserted into the four tracks (41, 42) on the two pattern plates respectively. Each fork handle (2a) is respectively connected with the two moving nails (5). The jaw protector (2) drives the moving nail (5) via the fork handle (2a).Each moving nail (5) moves along corresponding track respectively. The jaw protector (2) can change position by restriction of the moving nails (5) and the tracks (41, 42). Compared with the prior art, no track is arranged on the jaw protector (2) so the bending strength of the fork handle (2a) is improved and thus the anti-broking ability of the fork handle (2a) is improved. Besides, potential danger caused by concentrated stress can be effectively eliminated by abandoning the fork handle (2a) chute, in this way, the strength of the jaw protector (2) is improved.

Description

Variable ankle structure helmet

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a helmet for protecting a person's head, and more particularly to a helmet for a motor vehicle, particularly a motorcycle driver, and more particularly to a helmet in which the armor structure of the helmet can be changed in position.

Background technique

Drivers and motorcyclists must wear helmets to protect their heads. Typical helmet structures include helmet shells, goggles, shields and shin guards, with goggles, shields and shin guards mounted on the helmet. On the main body, the role of the goggles is to protect the human eye from the sun and other strong light. The role of the shield is to prevent harmful particles such as dust from entering the helmet, and the function of the shin is when the collision occurs. Effectively protect the driver's chin and other parts. It is well known that traditional helmets with ankle guard structure are divided into two types: full-helmet and half-helmet. The full-helmet ankle and the shell body are usually fastened or integrally formed. In other words, the guard is opposite to the guard. The main body of the helmet is not moving. Although the structure is simple and safe enough, it is rather dull. For example, if the environment permits, the helmet must be removed to complete the action of drinking water, talking on the phone, etc. The helmet's shin guard can be moved, but the shin guard usually only reaches the vicinity of the helmet when it is opened. At this time, the shin guard is in an open state, that is, the chin portion of the shin guard cannot fit the helmet body. Although it can meet the needs of drinking water, talking on the phone, etc., it is not suitable to continue driving even in a safe situation.

In view of this, the Spanish patent application ES 2 329 494 T3 discloses a helmet in which the shin guard structure can be changed, which comprises a helmet body, an ankle guard, two formwork, two moving nails and two fixing nails, wherein the templates are symmetrically placed respectively on the helmet On both sides of the shell body, the template is fastened and integrated into the body of the helmet shell, and a slot-shaped track is formed on the template. The track is formed by a plurality of sections of groove rails being butted together, and two of the guards are A fork-shaped slide rail is respectively formed on the fork, and one end of the fixing nail is fastened to the main body of the helmet shell, and the other end of the fixing nail is inserted into and passed through the sliding rail on the frog arm and is slidably engaged with the sliding rail. One end of the moving nail is fastened to the shackle, and the other end of the moving nail is inserted into the rail on the stencil and is slidably engaged with the rail. The biggest feature of the technical solution is that the shin guard can flexibly change the position as needed. That is, it can be moved from the full-helmet state of the chin to the half-helmet state behind the main body of the helmet shell, or can be converted between the full-helmet and the half-helmet, and the armor is accommodated and fully fitted in the half helmet. After the top of the helmet. However, the above technical solutions still have shortcomings, mainly manifested in the fact that the through-slot slide rails on the fork handle break the strength of the shin guard, because the slide rails of the through groove not only weaken the bending modulus of the shin guard, but also Greatly increase the trend of stress concentration, so the fork will be easily broken in the event of a collision; in addition, the distance between the nail and the fixed nail is changed, when the helmet is at the extreme positions of the full helmet and the half helmet, due to Due to the limitation of the structure, the distance between the moving nail and the fixing nail must be close, and the adhesion and strength of the shin guard and the main body of the helmet are relatively weak.

Summary of the invention

The invention provides a variable ankle structure helmet, which aims to change the position of the ankle guard relative to the main body of the helmet shell as needed, so as to realize the structural conversion between the full helmet and the half helmet, and at the same time effectively enhance the ankle guard. The anti-breaking strength of the fork handle can improve the fit of the shin guard and the main body of the helmet shell.

The object of the present invention is achieved by a variable ankle structure helmet comprising a helmet body, a shin guard and two formwork, the shin guard having two forks, the two stencils being separated from the body of the hood Two sides, the template is fastened to the main body of the helmet shell or the template is integrated with the main body of the helmet shell, and is characterized in that: two trough-shaped rails are arranged on each of the templates, and the rail is a slot of a complete section The rail is formed by docking a plurality of sections of groove rails; and four moving nails are additionally provided, wherein each of the two moving nails is matched with one fork and one template and arranged on the same side of the main body of the helmet shell; The two moving nails respectively correspond to the two tracks of the template, and one ends of the two moving nails are respectively inserted into the corresponding tracks, and the other ends of the two moving nails are connected to the group together. The shank drives the moving nails through the forks, and each of the moving nails moves along the corresponding template trajectory, and the shin guard can change the position under the constraints of the moving nails and the rails.

The tracks on the two templates described above are symmetrically arranged with respect to the median plane of the body of the helmet.

The distances of the above two moving nails in the same group remain unchanged.

The above-mentioned track has two extreme positions of the start end and the end end, and has a gradual slope-like rail surface structure at a part of the track leading to the start end and/or the terminal end.

The terminal of one of the two tracks of each of the above-described templates completely coincides or partially coincides with the beginning of the track.

The track has at least one length of the two rail sides forming a tapered or/and progressive tape width.

The above template is provided with a retracting groove.

The above-mentioned moving nail has a stepped journal structure, and the shoulder of the stepped journal is engaged with the rail surface of the rail.

A spacer is disposed between the fork of the shackle and the stencil, and the spacer cooperates with the rail surface of the rail.

The above-mentioned spacers are fastened to the nails or they are of a unitary structure.

The above-mentioned septum and the fork of the shin guard are of a unitary structure.

The above-mentioned spacer is provided with a hole through which the moving nail passes.

The above-mentioned moving nail is provided with a card slot, and a card is arranged to cooperate with the card slot.

The helmet described above is provided with a cover that is enclosed between the cover and the fork.

One of the two tracks on the same template described above has a closed circular track or an open circular arc track.

One of the two tracks on the same template described above has a closed-loop elliptical or open-loop elliptical arc orbit.

One of the two tracks on the same template described above includes a climbing rail, a spanning rail, and a falling rail.

The above-mentioned spanning rail is a circular arc or an elliptical arc.

The above-mentioned falling track is a circular arc or an elliptical arc.

The above-mentioned climbing rail is a circular rail or a linear rail.

The above climbing rail includes a starting rail.

The above starting track is a linear track or a circular track.

One of the two tracks on the same template described above includes a reciprocating track.

The above-mentioned reciprocating rail is a linear rail.

The above-described track including the reciprocating rail is a bifurcation rail.

The helmet described above is provided with a ballast device disposed between the formwork and the body of the helmet. The ballast device includes a resilient piece having a sinking structure, a stop and a resilient structure.

The variable ankle structure helmet of the invention adopts a structural scheme of four moving nails to match the rails on the template, the moving nails move along with the ankles, and the rails on the template are used to restrain the moving nails and finally constrain the movement track of the ankles. Thereby, the function of changing the position of the shin guard relative to the main body of the helmet shell can be realized as needed, and the conversion of the helmet from the full-helmet structure to the half-helmet structure can be achieved, and it is particularly important that the present invention is no longer compared with the prior art ES2329494T3. The sliding groove is provided on the shin guard, so the bending modulus of the fork is enhanced, so that the breaking strength of the shovel fork can be effectively improved. In addition, the fork groove structure can be eliminated to effectively eliminate the hidden danger of stress concentration. The strength of the ankle can also be increased, and the two nails connected to the same fork are always kept at a relatively long distance and remain substantially unchanged, so that the fit between the ankle and the main body of the helmet is more secure and protected. The movement of the dragonfly is more stable.

DRAWINGS

Figure 1 is an isometric view of a variable ankle structure helmet of the present invention;

Figure 2 is an exploded view of the assembly of the variable ankle structure helmet of Figure 1;

Figure 3 is a schematic view showing the process state of the variable ankle structure helmet of Figure 1 being changed from a full helmet structure to a half helmet structure;

Figure 4 is a view showing a state change state of the movable nail in the track when the helmet shown in Figure 3 is changed from the full-helmet structure to the half-helmet structure;

Figure 5 is a side elevational view of the variable ankle structure helmet of the present invention in a full helmet state;

Figure 6 is a geometrical diagram of the full helmet structure and the half helmet structure of one embodiment of the variable ankle structure helmet of the present invention;

Figure 7 is a perspective view of a template structure of the variable ankle structure helmet of the present invention;

Figure 8 is a front elevational view of the template of Figure 7;

Figure 9 is a cross-sectional view taken along the line K-K of the template shown in Figure 8;

Figure 10 is a front elevational view showing a template of a variable ankle structure helmet having a closed loop circular track and a rail groove thereof;

Figure 11 is a cross-sectional view showing a matching embodiment of the movable nail of the variable ankle structure helmet of the present invention and the template and the shackle;

Figure 12 is a cross-sectional view showing another embodiment of the matching of the movable nail of the variable ankle structure helmet of the present invention and the template and the shackle;

Figure 13 is a cross-sectional view showing still another embodiment of the movable nail of the variable ankle structure helmet of the present invention and the template and the frog handle;

Figure 14 is a cross-sectional view showing another embodiment of the matching of the movable nail of the variable ankle structure helmet of the present invention with the template and the frog;

Figure 15 is a schematic illustration of one embodiment of a variable ankle structure helmet of the present invention including a scaled track width;

Figure 16 is a front elevational view of the variable ankle structure helmet of the present invention including a template of an open circular arc track and its rail groove;

Figure 17 is a front elevational view of the template of the variable ankle structure helmet of the present invention comprising a closed loop elliptical track and its rail groove;

Figure 18 is a front elevational view of the variable ankle structure helmet of the present invention including a template of an open annular elliptical arc track and its track groove;

Figure 19 is a front elevational view of still another template of the variable ankle structure helmet of the present invention including an open annular elliptical arc track;

Figure 20 is a front elevational view of the template of the variable ankle structure helmet dividing the climbing rail, the spanning rail and the falling rail, and the rail groove thereof;

Figure 21 is a front elevational view of another template of the variable ankle structure helmet dividing the climbing rail, the spanning rail and the falling rail, and the rail groove thereof;

Figure 22 is a front elevational view of the variable ankle structure helmet of the present invention including a straight-starting rail template and its rail groove;

Figure 23 is a front elevational view of the template of the variable ankle structure helmet of the present invention including the arc-starting rail and its rail groove;

Figure 24 is a front elevational view of the template of the variable ankle structure helmet of the present invention comprising a linear reciprocating rail and its rail groove;

Figure 25 is a front elevational view of the variable ankle structure helmet of the present invention including a template of a curved reciprocating rail and its rail groove;

Figure 26 is a view showing the movement state of the movable nail in the rail when the helmet is changed from the full-helmet structure to the half-helmet structure;

Figure 27 is a front elevational view of an embodiment of a variable ankle structure helmet having a furcation rail and a rail groove thereof;

Figure 28 is a front elevational view, partly in elevation, of the embodiment of the variable ankle structure helmet of the present invention having a bifurcated rail; and a rail and ballast device;

Figure 29 is a front elevational view of still another embodiment of the variable ankle structure helmet having a furcation rail and its rail groove;

Figure 30 is a view showing the structure and state of an embodiment of the variable ankle structure helmet of the present invention having a switch device;

Figure 31 is a diagram showing the state of motion of the movable nail in the track when the helmet is changed from the full helmet structure to the half helmet structure as shown in Figure 28.

detailed description

The present invention will be further described below by way of specific embodiments, see Figures 1-31:

The variable ankle structure helmet comprises: a helmet shell body 1, a shin guard 2 and two formwork 3, the shin guard 2 having two forks 2a, the two stencils 3 being placed on the helmet body 1 Two sides; the most distinctive feature of the present invention is that two trough-shaped rails (41, 42) are opened on each of the templates 3, and each of the rails (41, 42) can be completed by one complete The groove track of the segment (that is, the groove track is generated by the same regular method), or may be formed by abutting a plurality of groove tracks (that is, the groove segments generated by different laws are connected into a combined track), taking FIG. 10 as an example. The track 41 is a complete segment of the circular groove track, and the track 42 is formed by the straight groove track (42c, 42g), the transition groove track (42d, 42f) and the circular groove track 42e a total of five sections of groove track However, in FIG. 21, the track 41 includes a plurality of groove tracks, and the track 42 has only one groove track. In addition, four movable nails 5 are provided which are movable relative to the template 3, wherein each of the two nails 5 and one The fork 2a and a template 3 form a set of fits and are arranged on the same side of the helmet body 1, and two movements of the same group One end of the 5 is connected to the fork 2a of the set and can move together with the fork 2a, and the other ends of the two nails 5 are respectively inserted into the track 41 and the track 42 on the same template 3 and The rail is used for the movement; it should be noted that the template 3 and the helmet body 1 may be fastened or the template 3 may be a part of the helmet body 1, that is, they may adopt a unitary structure, and the connection may be screwed, Various fastening methods used in the prior art such as rivets, welding, buckles, and buckles. In addition, the template 3 can be either a monolithic structure or a split structure, and when the template 3 adopts a split structure, the template 3 can be assembled from a plurality of parts, the template 3 shown in Fig. 2 is composed of an outer plate 3a, an inner plate 3b and a bottom plate 3c, wherein the rail 41 is composed of an outer plate 3a and an inner plate 3b. The groove is formed; it should also be noted that each of the tracks (41, 42) includes two rail sides A, and the portion of the template 3 that is adjacent to and along the track (41, 42) is unfolded. The surface is called the rail surface B (refer to Figure 7 to Figure 9, Figure 11). Figure 12), the rail surface B and the two rail side A are allowed to intersect or connect by a transitional arc or a transitional chamfer, and the optimal layout of the two rail sides A constituting the same rail is their common vertical helmet. The median surface S of the shell body 1 and the two rail side A are equidistant faces, of course, other arrangements of the two rail side A are also possible, where the center of the helmet body 1 is Face S refers to a face: see Figure 1, which is the longitudinal section of the helmet and passes through the top of the backbone of the helmet, on some sides of the helmet (ie, the two side surfaces corresponding to the human ear when worn). The feature points or parts, such as the hinged holes or lugs of the fastening goggles 6 and the shield 7, are symmetrically distributed about the surface. Generally speaking, the median surface S passes through the back of the head, the top of the head, the nose and the mouth. a helmet symmetry plane; in addition, two rail side A or the extension surface constituting the same track and the outer surface of the template 3 (referring to the side surface including the rail surface B) or its extension surface have two intersection lines L1, At the same time, there is a pair on the outer surface of the template 3 or the extension surface thereof It should be at the median line of the two intersection lines L1, which is called the trajectory line C (see FIGS. 8 to 12), and the intersection line L1 and the trajectory line C satisfy the following rule: that is, the trajectory line C A certain point can be made and only one ball can be made to be tangent to the two intersection lines L1. At this time, the line connecting the two points is the position of the track (41, 42) at the point. Track width; the trajectory C describes the trajectory of the moving nail 5, or the trajectory C represents the trajectory of the moving nail 5 by the track (41, 42); finally, it should be noted that the moving nail 5 may have Screws, studs, studs or studs of various cross-sections, the best cross-section of which is circular, elliptical, rectangular and polygonal, allowing arc chamfering when rectangular or polygonal cross-sections are used The form of the edge is treated; it must be pointed out that the connection between the movable nail 5 and the shin guard 2 in the present invention may be a fastening connection or a dynamic matching connection, but the axis O5 of the movable nail 5 is relative to the shin guard The position of 2 is best kept the same (but allowed to exist due to manufacturing errors, assembly errors, temperature rise deformation and The slight change caused by the deformation) means that the positions of the axes O5 of the two nails 5 connected to the same fork 2a are substantially unchanged from each other, or the distance between the two nails 5 is conventionally maintained. The same, of course, when the fork 2a is deformed, the present invention allows the relative position of the axes O5 of the two screws 5 to be changed. Here, the so-called fastening connection means that the nail 5 and the shin 2 are statically matched or Simply inserting the movable nail 5 and the shin guard 2 into a single structure, the so-called dynamic mating connection means that the movable nail 5 and the shin guard 2 are in a clearance fit, that is, the movable nail 5 can be swayed or rotated relative to the shin guard 2; Obviously, the two movable nails 5 in the same set are respectively restrained by the track 41 and the track 42 on the same template 3. Since the two moving nails 5 are simultaneously connected to the same fork 2a, the template 3 is noted. It is fastened or integrated with the helmet body 1 so that when the shin guard 2 is moved, the two nails 5 driven by each fork 2a are respectively along the track 41 and the track on the corresponding template 3. 42 moves, and when the shin guard 2 is recovered, the forks 2a are driven again. The two moving nails 5 return along the track 41 and the track 42. It is not difficult to find that the track (41, 42) provided on the template 3 constrains the movement of the moving nail 5 and finally constrains the movement track of the shin guard 2, In other words, the present invention can realize the function of changing the position of the shin guard 2 relative to the helmet body 1 as needed, that is, the mutual conversion between the full hood structure and the half helmet structure can be realized, and the shin guard can be realized in the half helmet state. The chin 2c of the 2 accommodating and conforming to the outer surface of the main body 1 of the helmet shell, there is no doubt that the shin guard 2 must cross the goggles 6 and the shield 7 while moving, regardless of whether the shin guard 2 is smashed or retracted, and the shin guard 2 There are also two extreme positions, the full helmet state position and the half helmet state position (see Figure 6). When it is in the full helmet position, it is similar to the existing fixed ankle helmet, which can effectively protect the driver from colliding. When it is in the half helmet state, it is similar to the existing half helmet helmet, and does not affect the driver's actions such as drinking water and talking. Figure 3 shows the helmet of the variable ankle structure of the present invention. Schematic diagram of the process state of the structure change to the half helmet structure, 4 is the position change of the nail 5 in the track (41, 42) corresponding to the guard 2 of Fig. 3 in different states, wherein Fig. 3 (a) and Fig. 4 (a) are in the full helmet state, and the guard at this time颚2 is in the protection position, Figure 3(b) and Figure 4(b) are in the open state, at which time the shin 2 begins to climb, Figure 3(c) and Figure 4(c), Figure 3(d) and Fig. 4(d) is a spanning state, at which time the shin guard 2 spans the visor 6 and the shield 7, and Fig. 3(e) and Fig. 4(e) are in a half helmet state, at which time the shin guard 2 accommodates the body of the hood. 1.

The track (41, 42) between the two templates 3 of the present invention may be a symmetric layout or an asymmetrical layout, wherein a symmetric layout is preferred because the helmet is the simplest structure and the movement of the ankle 2 It is most stable; in particular, the symmetrical arrangement of the tracks (41, 42) of the two templates 3 according to the present invention with respect to the median plane S of the helmet body 1 means: the track on each template 3 ( 41, 42) The trajectory line C is simultaneously vertically projected onto the median surface S of the helmet body 1, the trajectory projection of the corresponding track is completely coincident or the projection of one trajectory line is completely contained by the projection of the other trajectory line, specifically The orthographic projections of the trajectory C of the track 41 of the two templates 3 on the median plane S are completely coincident or one of the trajectory projections is completely contained by the other trajectory projection, while the trajectory C of the track 42 of the two templates 3 is at the median The orthographic projections on the surface S are also completely coincident or one of the trajectory projections is completely contained by the other trajectory projection. The so-called inclusion refers to the length of the two projection lines, but the short projection lines completely coincide with the long projection lines. within It should be noted that the symmetry of the tracks (41, 42) on the two templates 3 in the present invention with respect to the median plane S of the helmet body 1 is only for their trajectory C, and is not required. The track widths and lengths of the respective tracks on the two templates 3 must be completely equal or completely symmetrical, i.e., the tracks 41 respectively on the two templates 3 may have unequal and asymmetrical track widths and lengths, as well The tracks 42 respectively on the two templates 3 may also have unequal and asymmetrical track widths and lengths, even though the tracks 41 and tracks 42 on the same template 3 allow their track widths to be different.

In the present invention, the track (41, 42) may be provided as a track having two extreme positions of the start end (41a, 42a) and the end (41b, 42b), and the best case is: two simultaneous connection with the same fork 2a The movable nail 5, when the movable nail 5 engaged with the rail 41 is at the starting end 41a, another moving nail 5 that cooperates with the rail 42 is at the beginning end 42a, and the moving nail 5 mated with the rail 41 is at the terminal. The other nail 5 that cooperates with the track 42 at 41b is just on the terminal 42b, and vice versa; obviously, when the nail 5 is at the beginning (41a, 42a), the shin 2 can be correspondingly designed. The position of the full helmet state, and when the nail 5 is at the terminal (41b, 42b), the guard 2 can be correspondingly designed in the half helmet state position, in order to make the guard 2 in the full helmet state and the half helmet state. In these two extreme positions, the helmet body 1 can be firmly adhered to, and the track of the track (41, 42) to the starting end (41a, 42a) or/and the terminal (41b, 42b) can be made progressive. The structure of the ramp-like rail surface B (see Figures 7, 8, and 9), so that the sinking rail surface B can be utilized and the fork 2a can be moved by the moving nail 5 Sinking on the surface of the template 3, in other words, the structure can make the shin guard 2 and the hood main body 1 adhere more tightly. It should be noted that the starting end 41a and the end 41b of the rail 41 can be overlapped (as shown in the figure). 22) can also not coincide (as shown in Figure 8).

In the present invention, the terminal 41b of one of the two tracks (41, 42) may partially overlap or coincide with its starting end 41a. Of course, the terminal 41b and the starting end 41a may not overlap at all, as shown in FIG. In the case of coincidence, FIG. 15 shows an example in which there is no intersection at all; obviously, when the terminal 41b completely coincides with the start end 41a, the trajectory C of the track 41 is closed-loop, but the trajectory C of the track 42 must be open-loop, At this time, the trajectory C of the track 41 has a coincidence point P at the beginning 41a and the terminal 41b, and the optimum point P can be determined as follows: Referring to Fig. 6, first assume that the shin 2 is engaged with the track 42 in the full-helmet state. The axis O5 of the nail 5 is at the M point position, and the axis O5 of the nail 5 that cooperates with the track 42 when the shin guard 2 is in the half helmet state is at the N point position, and it is assumed that the shin guard 2 is moved from the full helmet state to In the half helmet state, the angle of rotation relative to the main body 1 of the helmet shell is β, and the line segment MN is rotated by 90°-β/2 degrees around the M point in the direction of the movement of the shin guard 2, and the vertical line L of the MN line segment. The intersection point is the P point. It must be pointed out that when the track 41 takes the closed loop orbit, if the track 42 The cooperating nail 5 is at the M point or the N point position, and the P point at this time is the position point where the axis O5 of the moving nail 5 engaged with the track 41 passes, in other words, cooperates with the track 42. The position of the movable nail 5 on the fork 2a and the design rotation angle of the shin guard 2 can be used to plan the position of the movable nail 5 on the fork 2a in cooperation with the rail 41; it should be noted that the M point and the N point should be It is on the trajectory C of the track 42, but the M point and the start 42a, N of the track 42 and the terminal 42b of the track 42 may or may not coincide.

In the present invention, the two rail side faces A constituting the same track may be equidistant or parallel to each other or may not be equidistant or non-parallel to each other, in fact, when the moving nail 5 moves along the rails (41, 42), in order to increase the moving nails The motion stability of 5 may be such that the rail side A is wedge-shaped on some sections of the track 41 or/and the track 42, i.e., the track 41 or/and the track 42 are formed by at least one length of the two rail sides A. The tapered or/and the progressive track width, because the two rails 41 running on the same template 3 and the two moving nails 5 on the track 42 are opposite or substantially opposite when they are moved to the direction of movement of the two moving nails 5. When the position (such as when the shin guard 2 is at the middle position of the cross-top process and its vicinity), if the radii of curvature of the track 41 and the track 42 are designed to be relatively close, the force applied on the shin guard 2 Under the influence, the moving direction of the moving nail 5 on the track 42 is abruptly reversed, that is, unstable phenomenon occurs, and in order to avoid this, two rail sides of a part of the track (41, 42) may be A is made into a tapered or / and gradually released track As shown in Fig. 15, the track width of the track 42 from U42 → W42 gradually increases, and the track width of the track 42 from W42 → V42 gradually decreases. The track 41 from U41 → W41 The track width of the road section gradually increases, and the track width of the track 41 from the W41→V41 section gradually shrinks. It is undoubted that the above-mentioned track plan can make the moving nail 5 quickly slide to the W41 and W42 points, and When these points are crossed by the inertia, whether the guard 2 is opened from the full helmet state to the half helmet state or from the half helmet state to the full helmet state, the nail 5 can obtain the above effects when passing through the W41 and W42 points. That is, its stability is higher; it should be noted that the tapered track width and the fader track width may be separately disposed on the track 41 or separately on the track 42 or on both the track 41 and the track 42 at the same time. It can be either a single form of tapered track width or a progressive track width, or multiple other forms of tapered track width or fade track width.

The stencil 3 of the present invention can be provided with a retracting groove 12, which can be arranged beside the side of the rails (41, 42), can be arranged unilaterally or bilaterally, and its function is to increase the trajectory (41, 42) the elasticity so that the nail 5 can move more smoothly and stably, and the track width of a certain track (41, 42) can be slightly smaller than the journal size of the nail 5 at the track position, that is, The movable nail 5 and the track (41, 42) belong to an interference fit in a certain length range, and at this time, the movable nail 5 needs to forcibly extend the two rail side A of the track (41, 42) to pass; The template 3 itself can be made of an elastic material. Even if the structure of the retracting groove 12 is not used, the rails (41, 42) disposed thereon can also perform an interference fit with the movable nail 5, of course, after the retracting groove 12 is used. The elasticity of the rails (41, 42) is greater, and accordingly a larger mating interference can be taken, which is more advantageous for improving the stability of the movement of the nail 5 for the case of a tapered or progressive track width.

The movable nail 5 in the present invention can adopt a structure having a stepped journal. The so-called stepped journal structure refers to a cross section of the movable nail 5 having different magnitudes and step mutations along different positions of the axis O5, such as the movable nail 5 When the cylinder is its main body, the stepped journal is the movable nail 5, and there are at least two shaft segments of different diameters. Obviously, the step 2 and the fork 2a and the template 3 and the helmet body 1 can be used by the stepped journal structure. The distance between the guards 2 is changed to avoid interference with the template 3 or the helmet body 1 while effectively reducing the contact area with the template 3 and the helmet body 1. The resistance can be reduced. Figure 11 shows the case where the moving nail 5 has a stepped journal. It is easy to see that the shoulder of the moving nail 5 is slidably engaged with the rail surface B of the rail (41, 42), and the fork is simultaneously 2a is separated from the template 3 and the helmet body 1 by a certain distance δ1; it should be noted that the movable nail 5 can slide or roll with respect to the rail side A, and both. The fit of the shoulder to the rail B can be smooth (the nail 5 surrounds itself) Line O5 rotation phenomenon is not present) may be transferred slide (5 movable staple rotation about a certain phenomenon own axis O5) or two states may exist.

A spacer 2b may be disposed between the fork 2a of the shin guard 2 of the present invention and the template 3, as shown in Figs. 12 and 13, the spacer 2b is in motion engagement with the rail surface B of the rail (41, 42) ( Including smoothing and slipping; obviously, due to the presence of the spacer 2b, the body of the fork 2a is separated from the template 3 and the helmet body 1 by a certain distance δ2, so that the shin guard 2 can also be prevented from changing position. Interference with the template 3 and the helmet body 1 while reducing the contact area thereof to reduce the motion resistance; it should be noted that the spacer 2b is disposed between the fork 2a and the template 3 according to the present invention. There are two cases involved: the first case is that the spacer 2b is a part of the fork 2a, that is, they are a unitary structure (as shown in FIG. 12); the second case is that the spacer 2b is a separate component and It is made into a ring shape and then placed between the fork 2a and the template 3 (as shown in FIG. 13). At this time, the spacer 2b can be fastened to the fork 2a or loosely connected; The spacer 2b can also be inserted into the rail (41, 42) and slidably or roll-fitted with the rail side A or both The dynamic fit (as shown in FIG. 14), at this time, the movable nail 5 may not contact the rail side A; it should also be noted that the spacer 2b and the movable nail 5 may be fastened or integrated. It can also be loose fit.

The spacer 2b of the present invention may be provided with a hole. At this time, the movable nail 5 passes through the hole of the spacer 2b. The movable nail 5 of the present invention may be provided with a card slot 5a, and additionally provided with a card 8, and the card 8 may be provided with a card slot 8a. And engaging with the card slot 5a of the movable nail 5 through the card slot 8a (as shown in FIG. 2, FIG. 11 to FIG. 14) to prevent the movable nail 5 from being loosened; the cover 9 can also be provided in the present invention. The cover 9 is fastened to the fork 2a or otherwise fastened, and the card 8 is enclosed between the cover 9 and the fork 2a.

The track (41, 42) of the present invention can take a variety of forms, as described below:

1) The track 41 is a closed circular track (as shown in FIG. 10) or an open circular arc track (as shown in FIG. 16), and the circular track means the track 41 on the template 3. Projecting onto the median surface S of the helmet body 1, the projection obtained by the trajectory C on the median surface S satisfies the circular law; the so-called arc track refers to the orthographic projection of the track 41 on the template 3 to the helmet. On the median surface S of the shell body 1, the projection obtained by the trajectory C on the median surface S satisfies the arc rule; it is obvious that the circular track belongs to the closed-loop track, and the circular track belongs to the open-loop track; Yes, in order to complete the change of the shin guard 2 from the full helmet state to the half helmet state, the track 42 should be made into an open track, that is, a non-closed track, at which time the track 42 can be a complete groove track (not shown) Shown) can also be made up of multiple sections of groove rails (as shown in Figures 10 and 16).

2) The track 41 is a closed-loop elliptical orbit (as shown in FIG. 17) or an open-ended elliptical arc track (as shown in FIG. 18). The so-called elliptical orbit refers to the track 41 on the template 3. Projecting onto the median surface S of the helmet body 1, the projection of the trajectory C on the median surface S satisfies the elliptical law, and the so-called elliptical arc track refers to the orthographic projection of the track 41 on the template 3 to the helmet body 1 On the median plane S, the projection of the trajectory C on the median surface S satisfies the elliptical arc law; it should be noted that the ellipse and elliptical arcs in the present invention include various classes in addition to the elliptic equation. Ellipse, the so-called ellipse means that the projection of the trajectory C on the median plane S can be a simple harmonic curve equation, an elliptic curve of a spline function equation, or an elliptic curve which can even be connected by a plurality of segments of curves ( It is not shown in the figure); obviously, the elliptical orbit belongs to a closed-loop orbit, and the elliptical arc orbit belongs to an open-loop orbit; as described above, in order to ensure that the guard 2 is changed from the full-helmet state to the half-helmet state, the track 42 should also be made. Open track, ie non-closed track, track 42 can be docked to a complete period of groove tracks (19) formed by a plurality of pieces of track grooves (17 and 18).

3) The track 41 can be decomposed into three parts: a climbing rail, a cross rail and a falling rail. Correspondingly, the guard 2 has actions such as climbing, crossing and falling back. It should be noted that even if the track 41 is a complete segment a track formed by a single regular groove rail (a circular track as shown in FIG. 10, a circular arc track shown in FIG. 16, an elliptical track shown in FIG. 17, and an elliptical arc track shown in FIG. 18, etc.) The above division can be made; corresponding to the state in which the shin guard 2 is opened from the full-helmet state to the half-helmet state: the so-called climbing means that the chin 2c of the shin guard 2 starts from the full-helmet state of the helmet-shell body 1 to the detachment and is gradually opened. The process of the distance from the main body 1 of the helmet shell, the section of the track 41 through which the movable nail 5 passes is a climbing rail, and the so-called span means the process in which the chin 2c of the shin guard 2 passes over the goggles 6 and the shield 7 (the shield at this time) 7 is in a state of being fully opened or partially opened. At this time, the section of the track 41 through which the nail 5 passes is a spanning rail. The so-called fallback means that the chin 2c of the shin guard 2 starts to be gradually stored and finally closes to the helmet body 1 The process, at this time, the track 41 that the nail 5 has passed is the returning track; obviously, when the shin 2 When the half helmet state is recovered to the full helmet state, the above process evolves in the opposite direction; in particular, the climbing rail, the span rail and the falling rail of the rail 41 may be composed of different regular groove rails, for example, the climbing rail may include A grooved track with a straight line segment, that is, a linear track, or a grooved track containing a circular arc segment, that is, a circular arc track, and a cross-track and a falling-back rail may include a circular arc track or an elliptical arc track, FIG. 20 and FIG. It is given that the three sections of the main groove rails A41, B41 and C41 are combined with a plurality of transition groove rails D41 to form a track 41, wherein A41 corresponds to the climbing rail, B41 corresponds to the cross rail, and C41 corresponds to the falling rail, and the groove rails can be straight groove rails. It can also be a circular groove track or a curved groove track. In this case, the track 41 can be closed loop (shown in Figure 20) or open loop (shown in Figure 21); in particular, when crossing the rail and falling rail When a circular or elliptical arc track is used, they can be made into a uniform groove track. Figures 22 and 23 show an example in which the cross rail and the return rail are the same as a circular rail.

4) The climbing rail includes a starting rail 41c, that is, a section of the rail that the moving nail 5 travels on the rail 41 when the guard 2 moves from the full helmet state to the climbing rail, and the starting rail 41c mainly cooperates with the guard 2 out of the cabin action, including enough time for the goggles 6 and the shield 7 to complete the process from unlocking, bouncing to topping, or the process of closing the goggles 6 and the shield 7 from closed to fully open; When the cooperating nail 5 is engaged in the starting rail 41c, the moving nail 5 that cooperates with the rail 42 does not move on the rail 42 (ie, stays at the M point) or has only a small movement; Yes, the starting rail 41c may be specially arranged or fused into the climbing rail of the track 41, and may be a complete groove track or a plurality of groove tracks; in particular, the start track 41c may be made into a linear track or The form of the circular arc rail is more convenient for layout. The starting rail 41c in Fig. 22 is in the form of a linear rail, and the starting rail 41c shown in Fig. 23 is in the form of a circular arc rail. The arc that falls on the M point of the track 42 and the starting track 41c The radius R is exactly equal to the wheelbase of the two moving nails 5 on the same fork 2a.

5) The track 41 includes a reciprocating rail 41d, and the reciprocating rail 41d refers to the movable nail 5 that cooperates with the rail 41 in the rail 41 when the guard 2 is simply moved from the full helmet state to the half helmet state. There is a round-trip phenomenon in the whole road section or a certain section. At the same time, when the armor 2 simply recovers from the half helmet state to the full-helmet state, the movable nail 5 also exists in the whole road section or a certain section of the track 41. The reciprocating rail 41d may be a linear rail, that is, its trajectory C is a straight line segment (see FIG. 24), and the reciprocating rail 41d may also be a curved rail, that is, its trajectory C is a curved segment (see FIG. 25); in particular, if When the track 41 is divided into a climbing rail, a crossing rail and a falling rail, they can be combined into one reciprocating rail 41d, that is, the rail 41 is a pure reciprocating rail 41d, at which time the starting end 41a and the terminal 41b of the rail 41 can coincide ( As shown in FIG. 24 and FIG. 25), it is also possible to not overlap (not shown), and FIG. 26 shows that when the track 41 is a straight section of the reciprocating rail 41d, the corresponding guard 2 is opened by the full-helmet state. In the state of the half helmet, the state of the nail 5 at different positions, Figure 26(a) corresponds to the full-helmet state of the ankle guard 2, Figure 26(b) corresponds to the state where the ankle guard 2 is climbing, and Figure 26(c) corresponds to the state where the ankle guard 2 is in a spanning state, Figure 26 (d) Corresponding to the state in which the shin guard 2 is in the falling state, FIG. 26(e) corresponds to the state in which the shin guard 2 is in the half helmet state, and it is not difficult to find that the kinetic nail 5 has a round trip phenomenon in the rail 41; of course, the rail 41 including the reciprocating rail 41d It is also possible to make the component fork rails, that is, the layout of the climb rail, the cross rail and the fall rail is bifurcated, and FIG. 27, FIG. 28 and FIG. 29 show three typical fork rail diagrams, wherein the climb of FIG. 27 The rail and the recovery rail are mainly straight rails. The climbing rail and the recovery rail of Fig. 28 are mainly circular arc rails, and the climbing rail of Fig. 29 includes a small section of the starting rail 41c. It should be noted that the fork rails are pointed out. Forms can also be other forms, which are not listed here.

For the fork rail including the reciprocating rail 41d, a ballast device may be provided to prevent the nail 5 from malfunctioning at the mouth. The ballast device is disposed between the template 3 and the helmet body 1, and includes a spring piece 13 for the elastic piece 13. The material may be metal or plastic or composite material; the elastic piece 13 has a sinking structure 13a, a stopper 13b and a resilient structure 13c (see FIG. 29), and for the same set of two movable nails 5, when When the moving nail 5 farthest from the chin 2c passes through the elastic structure 13c, referring to FIG. 30(b), the elastic piece 13 is pressed by the moving nail 5, and at the same time, the stopping block 13b is sunk and sinks enough to let off. The last moving nail 5 of the chin 2c can pass the amplitude, and when the moving nail 5 farthest from the chin 2c runs to the sinking structure 13a, referring to Fig. 30(a), the stopper 13b depends on its own elasticity or by means of a spring bullet. And prevent the moving nail 5 closest to the chin 2c from passing; it should be noted that the above-mentioned ballast device can be fastened to the template 3 or the helmet body 1 by fasteners such as screws and riveting, the best way It is fastened to the helmet body 1 by a snap-fit structure; Figure 31 shows the corresponding颚2 is a state in which the full-helmet state is opened to the half-helmet state, and the state of the nail 5 is at different positions. Figure 31 (a) corresponds to the guard 2 in the full-helmet state, and Figure 31 (b) corresponds to the guard 2 In the state of climbing, Fig. 31(c) corresponds to the state in which the shin guard 2 is in a spanning state, Fig. 31(d) corresponds to the state in which the shin guard 2 is in the fallback state, and Fig. 31(e) corresponds to the shin guard 2 in the half helmet state, It is difficult to find that the moving nail 5 has a round trip phenomenon in the track 41.

It should be noted that the above-mentioned rails 41 and the rails 42 can be interchanged, that is, they can be interchanged from the position, function, shape and shape, and the object of the present invention can be achieved, but the premise is that the helmet body 1 is divided. The tracks 41 and tracks 42 on the formwork 3 on both sides must be interchanged at the same time.

The variable ankle structure helmet of the present invention adopts the structural scheme of the four movable nails 5 to match the rails (41, 42) on the template 3, and the movable nail 5 follows the movement of the ankles 2, and utilizes the rails on the template 3 (41). , 42) constraining the moving nail 5 and finally constraining the movement trajectory of the shin guard 2, thereby realizing the function of changing the position of the shin guard 2 relative to the main body 1 of the helmet as needed, thereby realizing the mutual conversion between the full helmet structure and the half helmet structure. Moreover, in the half helmet state, it is ensured that the shin guard 2 is housed and attached to the helmet body 1; more importantly, the present invention has at least the following significant progress compared to the prior art ES2329494T3: 1) does not exist on the shin guard 2 The chute structure, so the bending modulus of the fork 2a is enhanced, effectively improving the fracture strength of the fork 2a; 2) the abandonment of the chute structure effectively eliminates the hidden danger of stress concentration, and also improves the strength of the ankle 2 3) The two moving nails 5 on the same fork 2a are always kept at a certain distance, so that in the full-helmet and half-helmet structure, the fit of the shin guard 2 and the helmet body 1 is more secure, and the movement of the shin guard 2 more stable.

The above embodiments are only a few preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be Within the scope of protection of the invention.

Claims

A variable ankle structure helmet comprising a helmet body, a shin guard and two formwork, the shin guard having two forks, the two stencils being disposed on two sides of the helmet body, the formwork and the helmet body The fastening connection or the template is integrated with the main body of the helmet shell, and is characterized in that: two trough-shaped rails are arranged on each of the templates, and the rails are a complete section of the groove rail or are connected by a plurality of section groove rails. In addition, there are four moving nails, wherein each of the two moving nails is matched with one fork and one template and arranged on the same side of the main body of the helmet shell; in the same group, two moving nails are respectively The two rails of the template are in one-to-one correspondence, and one ends of the two nails are respectively inserted into the corresponding rails, and the other ends of the two nails are connected together to the forks of the group; The fork handle drives the moving nails, and each of the moving nails moves along the corresponding template orbit. Under the constraints of the moving nails and the rails, the ankles can change positions.
The variable ankle structure helmet according to claim 1, wherein the tracks on the two templates are symmetrically arranged with respect to a median surface of the body of the helmet.
The variable ankle structure helmet of claim 1 wherein the distance between the two moving nails in the same set remains unchanged.
The variable ankle structure helmet according to claim 1, wherein the track has two extreme positions of a start end and a terminal end, and a gradual slope-like rail surface structure at a portion of the track leading to the start end and/or the terminal end .
The variable ankle structure helmet according to claim 4, wherein the end of one of the two tracks of each of the templates completely coincides or partially coincides with the beginning of the track.
A variable ankle structure helmet according to any one of claims 1 to 5, wherein the rail has at least one length of the two rail sides forming a tapered or/and progressive tape width.
The variable ankle structure helmet according to any one of claims 1 to 5, characterized in that the template is provided with a retracting groove.
The variable ankle structure helmet according to any one of claims 1 to 5, wherein the movable nail has a stepped journal structure, and the shoulder of the stepped journal is matched with the rail surface movement of the rail. .
The variable ankle structure helmet according to any one of claims 1 to 5, characterized in that: a spacer is arranged between the fork and the template of the shin guard, and the spacer cooperates with the rail surface movement of the rail .
The variable ankle structure helmet according to claim 9, wherein the spacers are fastened to the movable nails or they are integrally formed.
The variable ankle structure helmet according to claim 9, wherein the spacer is integral with the fork of the shin guard.
The variable ankle structure helmet according to claim 11, wherein the spacer is provided with a hole, and the movable nail passes through the hole.
The variable ankle structure helmet according to claim 12, wherein the movable nail is provided with a card slot, and a card is disposed to cooperate with the card slot.
The variable ankle structure helmet according to claim 13, wherein a cover is provided, and the card is enclosed between the cover and the fork.
The variable ankle structure helmet according to any one of claims 1 to 5, characterized in that: one of the two tracks on the same template has a closed circular orbit or an open circular orbit .
The variable ankle structure helmet according to any one of claims 1 to 5, wherein one of the two tracks on the same template has a closed-loop elliptical or open-loop elliptical arc orbit. .
The variable ankle structure helmet according to any one of claims 1 to 5, characterized in that one of the two tracks on the same template comprises a climbing rail, a crossing rail and a falling rail.
The variable ankle structure helmet according to claim 17, wherein said spanning rail is a circular arc or an elliptical arc.
The variable ankle structure helmet according to claim 17, wherein the return rail is a circular arc or an elliptical arc.
The variable ankle structure helmet according to claim 17, wherein the climbing rail is a circular rail or a linear rail.
The variable ankle structure helmet according to claim 17, wherein said climbing rail comprises a starting rail.
The variable ankle structure helmet according to claim 21, wherein said starting rail is a linear rail or a circular arc rail.
The variable ankle structure helmet according to any one of claims 1 to 5, characterized in that one of the two tracks on the same template contains a reciprocating rail.
The variable ankle structure helmet according to claim 23, wherein the reciprocating rail is a linear rail.
The variable ankle structure helmet according to claim 23, wherein the track including the reciprocating rail is a bifurcation rail.
The variable ankle structure helmet according to claim 25, wherein a ballast device is disposed, the ballast device being disposed between the template and the body of the helmet, the ballast device comprising a spring piece, the elastic piece having a sinking structure , block and elastic structure.