KR101443259B1 - Helmet - Google Patents

Abstract

The present invention includes an outer shell (3) that surrounds and protects a head of a wearer; a fixing strap (5) that is attached to an inner circumferential surface of the outer shell (3); a head strap (7) that is connected to the fixing strap (5) by strap connection means (20) for the head to be fitted; a lens (13) whose both end portions are rotatably fixed to an outer side of the outer shell (3); and an adjuster (60) that fixes the lens (13) while allowing rotation angle adjustment. The adjuster (60) includes ring gears (61) that are provided in a boss form on both sides of the outer shell (3), have an unevenness (73) formed in an inner circumferential surface, and have a protruding connection shaft (71) in a central portion; a disk (63) that is inserted into the ring gear (61) and rotates and has a protrusion (85) which is engaged with the unevenness (73) of the ring gear (61) and rotates while being hooked step by step along the unevenness (73); a cover (65) that hides the disk (63); and a fastening member (67) that is fastened to the connection shaft (71) of the ring gear (61). A rotation angle of the lens (13) can be precisely adjusted by the ring gear (61).

Description

Helmet {Helmet}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a helmet, and more particularly, to a helmet which can be permanently or semi-permanently connected to a helmet, To a helmet having band connecting means.

In general, helmets are used to protect the head. They are used for construction work, masonry work, or to prevent accidents when riding a motorcycle. In recent years, the use of synthetic resin has become popular, and firefighters, police officers or athletes are also worn . In particular, helmets are an essential item for firefighters to suppress fire and protect firefighters' heads from surrounding objects or collapses in the field of fire.

These helmets should be manufactured to increase the safety and workability of the wearer at the same time, so that they can be protected against harsh working conditions such as fire and gas explosion scene .

Such a conventional helmet includes a shell 103 surrounding the wearer's head, a fixed band 105 attached to the shell 103 for fixing various components, And a headband 107 which is fitted in the head and adapted to adjust the inner diameter by an inner diameter adjuster 115. The headband 107 further includes a chin strap 109 for fixing the outer shell 103 to the jaw, A neck hood 116 connected to the lower end of the outer covering 103 to protect the neck of the wearer and a lens 113 for securing the visibility of the wearer and protecting the face, .

In the conventional helmet 101 as described above, a connecting band 125 is used to connect the headband 107 to the fixed band 105. The connecting band 125 is connected to the headband 107 as shown in FIGS. 1 and 2 Similarly, the upper end is connected to the fixed band 105 and the lower end is connected to the headband 107, respectively. As shown in Figs. 1 and 2, the band connecting means for connecting the connecting band 125 to the fixed band 105 and the head band 107 can be formed by, for example, a snap fitting structure which can be attached and detached by hand, The connecting band 125 and the headband 107 are connected to each other by a snap-fitting structure, and the connecting band 125 and the fixing band 105 are connected by a rivet coupling structure, respectively.

2, a snap hole 155 is formed in the lower end of the connecting strip 125 and a fitting protrusion 153 is formed on the outer circumferential surface of the headband 107 corresponding to the snap hole 155 The connecting strip 125 and the headband 107 are detachably connected to each other, which facilitates detachment and attachment, but can be relatively easily separated by an unnecessary external force.

Conversely, a rivet hole 127 is formed in the upper end of the connecting band 125 and the upper end of the fixing band 105 corresponding thereto, respectively, so that the connecting band 125 and the fixing band (105) are permanently connected so as not to be detachable, the connection itself is robust, but it can not be separated according to necessity, resulting in disadvantages in terms of disassembly and reassembly.

Alternatively, as shown in FIGS. 3 and 4, a conventional helmet disclosed in Korean Patent Registration No. 10-0989524 (protective helmet), which is patented in the Korean Intellectual Property Office, includes a shell 210 for protecting the head from external impacts; A liner ring (not shown) installed inside the shell 210 to separate the head from the shell 210; A lens 230 rotatably fixed to both ends of the shell 210; And an adjuster fastener 240 fixed to the inside of the shell 210 so as to adjust the rotation angle of the lens 230. The adjuster fastener 240 is mounted on both sides of the shell 210 A boss (241) provided on the base (241); A concave-convex ring 243 inserted into the boss 241 and provided with concave and convex portions 243a on the inner circumferential surface thereof; A hinge having protrusions 245a protruding from both ends of the lens 230 and inserted into the concave and convex rings 243 and rotating and engaged with the concave and convexities 243a and stepwise along the concave and convexities 243a, (245); And a fastening member 247 for fastening the hinge 245 to the boss 241. The stopper 248 controls the rotation angle of the hinge 245. The stopper 248 ) Includes a rotation protrusion (248a) provided on the lens (230) and rotating along the outer periphery of the concave / convex ring (243) together with the hinge (245); And a locking protrusion 248b protruding from the outer periphery of the protrusion ring 243 and engaged with the rotation protrusion 248a.

Such a conventional protective helmet can adjust the rotation angle of the lens 230, so that the face portion can be partly opened or closed as needed. At this time, the adjuster fastener 240 that adjusts the rotation angle of the lens 230 is configured such that when the concave / convex ring 243 is inserted into the boss 241, the engaging jaw 248b formed on the concave / And inserted into the step 241a. The hinge 245 inserted into the concave-convex ring 243 rotates while the protrusion 245a is rotated while being stepped on the concave and convex portions 243a of the concave-convex ring 243 so that the lens 230 is rotated stepwise.

However, since the conventional art helmet has a limited number of protrusions and depressions 243a of the protrusive ring 243 on the inner circumferential surface of the protrusive ring 243 as shown in the drawing, Can not be adjusted.

The hinge 245 and the lens 230 are fastened and fixed to the boss 241 provided on the shell 210 by using the fastening member 247. Therefore, The hinge 245 and the lens 230 can be separated from the shell 210 due to loosening of the fastening member 247 due to the rotational force applied to the member 247 or loosening of the fastening member 247 There was a problem.

KR 10-0989524

In order to solve the problems of the conventional helmet as described above, in connecting the fixed band and the head band of the helmet directly or by using the connecting band, the head band or the connecting band is fixed to the fixed band permanently And it is an object of the present invention to provide a band connecting means capable of separating each other when necessary and a helmet having such a band connecting means.

In addition, since the angle of the lens protecting the face portion can be adjusted stepwise, it is possible to maintain a part of the face portion opened and closed by the lens, and the fastening member for fixing the lens to the helmet shell is prevented from being released by the repeated opening and closing operation of the lens It is an object of the present invention to provide a helmet which can prevent the lens from being detached from the outer surface of the helmet.

In order to achieve the above object, the present invention provides a hair cosmetic comprising: a skin covering a wearer's head; A fixing band attached to an inner circumferential surface of the shell; A headband connected to the fixed band and fitted to the head; Band connecting means for connecting the headband to the fixed band; A lens whose both ends are rotatably fixed to the outside of the shell; And an adjuster for fixing the lens to the outside of the shell so as to be adjustable in the angle of rotation, wherein the adjuster is provided on both sides of the shell in the form of a boss, the concave and convex is formed on the inner circumferential surface, A ring gear having a connecting shaft; A disk integrally fixed to both ends of the lens, inserted into the ring gear and rotated, and having protrusions that are engaged with the irregularities and are rotated while being stepped along the irregularities; A plate-like cover coupled to outside of both ends of the lens to conceal the disc; And a coupling member passing through the cover and the disc sequentially and fastened to the coupling shaft of the ring gear provided on the shell.

The adjuster may further include elastic means for providing elasticity to the disc to induce smooth rotation of the protrusion provided on the disc, wherein the elastic means is formed in a shape of a groove or a hole in the disc, And an elastic space for weakening a part of the stiffness to elastically deform a part of the disk on which the protrusion is formed to provide a fluid space in the protrusion that is rotated in a state of being engaged with the concavity and convexity of the ring gear.

Further, the adjuster may further include rotation preventing means for preventing rotation of the cover due to rotation of the lens, wherein the rotation preventing means includes: a locking end formed at an end of the connecting shaft; And a locking protrusion formed on the inside of the cover and being engaged with the locking end to prevent rotation of the cover.

Further, the band connecting means may include a male fastening protruding from one of the fixed band and the headband; And a female fastener passing through the other of the fixing band and the headband at a position corresponding to the male fastener so as to sandwich the male fastener, wherein the female fastener comprises: A snap portion for applying a snap reaction force to a coaxial phase of the male fastener and restricting the male fastener in the radial direction after the male fastener is inserted; And an engaging portion for engaging and fixing the male fastener at the opposite side of the snap portion after the male fastener is inserted.

The male fastener may include: a stem portion projecting from a wall surface of the fixed band or the headband; And a head portion that is enlarged at a tip of the stem portion and forms a fitting groove between the stem portion and the wall surface.

It is preferable that the snap portion is a cantilever which penetrates the body of the fixed band or the headband in a U-shape.

The fastening portion may include a body protruding from a wall surface of the other of the fixed band or the headband to receive the head portion and opened toward the snap portion; And an engaging groove cut out from the open end of the body to an outer surface of the body to receive the stem portion.

In addition, it is preferable that the body is formed with an inclined surface at an open end edge so that the insertion of the head portion, which is fitted into the pocket, is guided by the inclined surface.

The fixing belt may further include a connection band having one end connected to one of the fixed band and the headband and the other end connected to the other one, It is preferable that female fasteners or male fasteners corresponding to female fasteners are selectively formed at both ends, respectively.

According to the helmet of the present invention, for example, when the female fastener formed on the fastening band is combined with the male fastener formed on the connecting band, the direction of the force causing the snap-back of the snap portion of the female fastener to the head of the male fastener inserted into the female fastener Shaped fastener in a direction perpendicular to the surface of the fastening band so that the female fastener and the male fastener are engaged with each other and then the direction of the external force applied to the head portion in order to pull out the head portion of the male fastener from the fastener of the female fastener, It is perpendicular to the downward direction. Therefore, the male fastener is restrained by the fastening portion, which is a rigid body, with respect to the external force exerted on the connecting strap in a direction perpendicular to the surface of the fastening strip after being coupled to the female fastener. With respect to the applied external force, the snap portion restricting the head portion restrains the head portion in a direction that does not have a snap-resilient force, so that deformation is caused by the snap elastic force and there is no room for separation from the fastening portion.

In addition, the fixed band and the connecting band are coupled by a rigid and permanent band connecting means which can not be separated by an external force, but are also easily separated by an operation of pushing the snap portion out of the rivet or the like, Therefore, it is possible to simultaneously satisfy the durability performance and the assemblability due to the connection between the fixed band and the headband or the connecting band.

Further, the adjuster for adjusting the angle of the lens is constituted by a ring gear formed with a plurality of concavities and convexities along the inner circumferential surface thereof, and the disc having the protrusions is inserted into the ring gear and is interlocked, so that the angle of the lens can be precisely controlled.

Further, since the both ends of the lens are fixed to both sides of the shell through the cover to which the fastening member is fastened, the cover can prevent the fastening member from being loosened by providing the function like the washer, and by the elastic force of the elastic means, It is possible to smoothly rotate the cover, and to prevent the cover from rotating when the lens is rotated by the rotation preventing means.

1 is an exploded perspective view of a conventional helmet;
Fig. 2 is a partial exploded perspective view of Fig. 1; Fig.
3 is an exploded perspective view illustrating a portion of a helmet according to another embodiment of the present invention;
Fig. 4 is an enlarged longitudinal sectional view of Fig. 3; Fig.
5 is an exploded perspective view of a helmet according to the present invention.
6 is a detailed perspective view of the male and female fasteners shown in Fig.
7 is a detailed perspective view of the male and female fasteners shown in Fig.
8 is a side sectional view of Fig. 7; Fig.
Fig. 9 is a side sectional view of the head of the male fastener pressing the snap portion of the female fastener before the engagement state of Fig. 7; Fig.
10 is an exploded perspective view showing the adjuster of the helmet according to the present invention.
11 is an enlarged longitudinal sectional view showing the adjuster of the helmet according to the present invention.

Hereinafter, a helmet according to an embodiment of the present invention and a belt connecting means applied to the helmet will be described in detail with reference to the accompanying drawings.

The helmet according to the embodiment of the present invention includes a cover 3, a fastening band 5, a headband 7, a lens 13 and an adjuster 60 as shown in FIG. And further comprises a chin strap 9 and a cushioning pad 11. [0033]

Here, the outer covering 3 is a portion for protecting the wearer's head, and is usually made of a high-strength plastic material which is light and has high strength. Particularly, in the outer shell 3, one or more buffer pads 11 for buffering are provided on the top of the crown.

The fixing belt 5 is a connecting member for attaching various members to the inside of the envelope 3, and has a rounded band shape along the entire head as shown in FIG. The fixed band 5 is attached to the lower end portion of the inner circumferential surface of the outer shell 3 by screws or the like and connected to the helmet 1 such as the chin strap 9 or the neck hood 16 as well as the head band 7 So that most of the members are connected and fixed.

As shown in Fig. 5, the headband 7 is a wearable portion that allows the helmet 1 to be brought into close contact with the head of the wearer. The headband 7 has a band- As shown in Fig. For this purpose, the headband 7 can be adjusted in its overall length through a conventional inner diameter adjuster 15, such that it can be brought into close contact with the wearer's head. The headband 7 is fixed to the outer shell 3 by being connected to the fixed band 5 like other members. To this end, the headband 7 is fixed to the fixed band 5 by means of the band connecting means 20 .

The band connecting means 20 is a fastening means for connecting the headband 7 to the fastening band 5 and basically comprises a pair of male and female fasteners 23 and 21, As shown in Fig. 9, the bar further including the connecting strip 25 is formed to selectively correspond to either the headband 7 or the fixed band 5. At this time, the male fastener 21 can be directly protruded and formed on the headband 7, for example, although not shown. At this time, the female fastener 23 is attached to the lower end of the fixing belt 5, 25, respectively. Although not shown, when the male fastener 21 protrudes from the lower end of the fastening band 5, the female fastening hole 23 is formed at the upper end of the headband 7 or at the upper end of the connecting strap 25 . 5 to 9, when the male fastener 21 protrudes from the upper end of the connecting strap 25, the female fastener 23 is inserted through the upper end of the fastening band 5 do. Conversely, although not shown, the female fastener 23 is formed to pass through the lower end of the headband 7 when the female fastener 21 protrudes from the lower end of the connecting band 25. [

As shown in FIGS. 5 to 9, the male fastener 21 is formed at the upper end of the connecting strip 25 as a part of the belt connecting means 20. As shown in FIGS. 5 to 9, (31) and a head part (33). The stem portion 31 may be formed as a base of the male fastener 21 so as to protrude from the upper end of the connecting strip 25 as shown in FIG. 6 to FIG. 9, It may be formed directly on the wall surface of either the fixed band 5 or the headband 7 as shown in Fig. The head portion 33 is formed at the tip end of the stem portion 31 as a latching end of the male fastener 21 and has a diameter larger than that of the stem portion 31 so as to function as a latching end. Therefore, the head portion 33 forms the fitting groove 37 between the body portion of the connecting strip 25 and the wall surface.

The female fastener 23 is a part that forms the belt connecting means 20 in correspondence with the male fastener 21 and which is directly connected to the upper end of the head belt 7 The male fastener 21 may be formed at the lower end of the fixing belt 5 or at the lower end of the connecting belt 25. [ 5 to 9, the female fastener 23 can be passed through the fastening band 5, at which time the male fastener 21 is fastened to the upper end of the headband 7, 25). Although not shown, the male fastener 21 may protrude from the fixing belt 5 or the connecting belt 25 when the female fastener 23 is formed at the upper end or the lower end of the connecting belt 25. [

5 to 9, the female fastener 23 constituting the band connecting means 20 together with the male fastener 21 and the connecting strap 25 is provided with the snap portion 41, And an engaging portion 43. 5 to 9, the snap portion 41 is a means for restricting the male fastener 21 coupled to the female fastener 23, and the fastener 5, the headband (not shown) 7, or a connecting strip 25, that is, a cantilever formed by, for example, a portion of the fixing band 5 penetrating through the body of the fixed band 5 and being cut and left.

9, the snap section 41 is formed in the shape of a cantilever which is integrally formed with the fixed band 5 at the lower end in the figure. In the snap section 41, Is deformed outwardly of the fixing band (5) by the elastic member (33), so that it is resistant to the head part (33). Accordingly, when the male fastener 21 is inserted as shown in Fig. 9, the snap portion 41 coaxially applies a snap reaction force to the male fastener 21. Thus, the snap portion 41 is snap-engaged with the male fastener 21, and after the male fastener 21 is fully inserted as shown in Fig. 8, the male fastener 21, i.e., the head portion 33, Lt; / RTI >

As shown in FIGS. 5 to 9, the body 45 and the engaging groove 47 are engaged with each other by a male fastener 21, which is fastened to the female fastener 23, Shaped fastener 21 is fixed to the opposite side of the snap portion 41 via the head portion 33 formed on the upper side and fitted in the pockets 49 of the body 45. [

For this purpose, the latching part 43 comprises a body 45 and a latching groove 47. The body 45 is a part for receiving the male fastening tool 21, particularly the head part 33, As shown in Fig. 9 to Fig. 9, the fixing band 5, the headband 7, or the connecting band 25 on which the female fastener 23 is formed, i.e., 5 inwardly. 9, the body 45 has a transversely bent cross section to form a snap section 41, that is, a pocket 49 opened toward the cantilever, so as to insert the head section 33 And extends downward. 8 and the like, the body 45 is formed by chamfering an inclined surface 51 at the opening end edge. The inclined surface 51 is formed by inserting the head portion 33 into the pockets 49 The head portion 33 is guided to ensure smooth insertion.

As shown in FIGS. 6 to 9, the latching groove 47 is formed by cutting the outer surface of the body 45 from the open end, as shown in FIGS. 6 to 9, which is a portion for inserting the stem portion 31 of the male fastener 21. And has an inverted U-shaped outer shape that is larger than the diameter of the stem portion 31 and is opened toward the snap portion 41 so that the stem portion 31 can be inserted.

As described above, the connecting strip 25 is a connecting member provided to connect the fixed band 5 and the headband 7, and one end of the connecting band 25 is connected to one of the fixed band or the headband 7, 5 to 9, the upper end is connected to the fixed band 5, and the lower end is connected to the headband 7, respectively. As shown in FIG. 5, the connecting strip 25 may have various shapes such as an upper end being bent or an upper end and a lower end being both bent. As mentioned above, Or a male fastener (21) or a female fastener (23) is fixed to both ends of the lower or upper and lower ends connected to the headband (7) 21 in a one-to-one correspondence.

5 and 10, the lens 13 is provided on the front side of the outer shell 3 to protect the wearer's face. The lens 13 is made of a transparent material having high strength, Both ends are rotatably coupled to the outer side of the outer shell 3 by the jammer 60 to open and close the front of the outer shell 3. [ At this time, the lens 13 has a coupling groove 17 to which a disk 63 to be described later is coupled, is formed at both ends in a groove shape, and a communication hole 19, which will be described later, is formed at the center.

5 and 10, the adjuster 60 fixes the lens 13 to the outer shell 3 so that the rotation angle of the lens 13 can be adjusted. The ring gear 61, the disk 63, (65).

As shown in Fig. 10, the ring gear 61 is provided on both sides of the outer shell 3 in the form of a ring-shaped boss. The ring gear 61 may be formed as a separately separated member and coupled to the outer shell 3, but it is preferable that the ring gear 61 is formed in the same shape as the outer shell 3 in the embodiment of the present invention. The ring gear 61 is formed with a plurality of gears 73 in the form of gears along the inner circumferential surface thereof and a connecting shaft 71 protrudes from the center thereof. As shown in FIG. 10, the ring gear 61 is formed along the circumferential direction of the inner circumferential surface, so that the area of the irregularities 73 is wider than in the prior art, . Accordingly, the ring gear 61 can control the rotation angle of the lens 13 when the lens 13 is opened and closed more precisely than the conventional one, as the protrusions 85 of the disk 63, which will be described later, are coupled to the concavities and convexities 73 in multiple stages. That is, since the number of the concavities and convexities 73 of the lens 13 is larger than that of the conventional art, the angle of rotation can be controlled at a fine angle.

The disc 63 is provided at both ends of the lens 13 described above. The disk 63 may be formed of the same body as the lens 13, but in the embodiment of the present invention, as shown in FIGS. 5 and 10, it is preferable that the disk 63 is formed as a separately separated member and is coupled to the lens 13 Do. 10, a coupling boss 81 is formed on one side of the disc 63, and the coupling boss 81 is press-fitted into the coupling grooves 17 on both ends of the lens 13, (13). At this time, it is preferable that the engaging boss 81 is formed in a rectangular shape, and the engaging groove 17 of the lens 13 is formed in a shape corresponding to the engaging boss 81. The coupling boss 81 can be formed in a polygonal shape such as a quadrangle and the disk 63 can be rotated by the lens 13 as it is pressed into the angular coupling groove 17 provided at both ends of the lens 13 To prevent it. That is, the disc 63 is press-fitted into the coupling groove 17 and is integrally fixed to both ends of the lens 13.

A connecting hole 83 is formed at the center of the disk 63 so that the connecting hole 83 is inserted into the inside of the ring gear 61 while being fitted in the connecting shaft 71 provided in the ring gear 61, And rotates around the connecting shaft 71. At this time, the disc 63 is rotated integrally with the lens 13 to rotate the lens 13. The disc 63 is connected to both ends of the lens 13 and connects the lens 13 to the outer shell 3 as it is inserted into the ring gear 61 formed on the outer shell 3. At this time, it is preferable that the lens 13 is inserted into the connection shaft 71 together with the disk 63 through the communication hole 19 communicating with the connection hole 83 of the disk 63. The lens 13 is connected to the outer shell 3 while the disc 63 coupled to the both ends is inserted into the ring gear 61 and is rotated together with the disc 63 along the connecting shaft 71 As shown in Fig.

Here, the disc 63 is provided with a projection 85 on the outer side which is engaged with the concave / convex portion 73 of the ring gear 61.

10, the protrusions 85 protrude from the outer side of the disc 63 and are engaged with the protrusions 73 of the ring gear 61 and rotate along the protrusions 73. 11, since the projection 85 is rotated while being caught by the projections and depressions 73 of the ring gear 61, as the disk 63 rotates stepwise along the inner periphery of the ring gear 61, (13) in a stepwise manner.

5 and 10, the cover 65 is positioned on the outer side of the disc 63, that is, on the outer side of both ends of the lens 13 to which the disc 63 is engaged, And is fixed to the connection shaft 71 as it is fastened by the fastening member 67 to the connection shaft 71. That is, the cover 65 is fixed to the connection shaft 71 at the outer side of the lens 13, thereby concealing the disk 63 provided inside the lens 13. The cover 65 presses the disk 63 by the fastening force of a fastening member 67 to be described later to prevent the disk 63 from separating from the ring gear 61. [

The cover 65 provides an elastic force to the fastening member 67 at the time of fastening the fastening member 67 and functions as a normal spring washer. Therefore, the fastening member 67 is prevented from loosening even if the lens 13 is rotated repeatedly.

The cover 65 diffuses the fastening force of the fastening member 67 and provides it to the outside of the lens 13. Therefore, the lens 13 is prevented from being broken by the fastening force of the fastening member 67. [

The fastening member 67 is fastened to the connecting shaft 71 of the ring gear 61 provided on the outer casing 3 through the cover 65 and the disk 63 sequentially as shown in Fig. Thus, the fastening member 67 fixes the cover 65 and the disk 63 to the lens 13 and the ring gear 61.

As described above, the adjuster 60 fixes the lens 13 to the outer side of the outer shell 3 so as to be stepwise rotatable, so that the lens 13 can be opened and closed while adjusting the rotation angle.

On the other hand, the adjuster 60 may further comprise elastic means.

The elastic means provides elasticity to the disc 63 to induce smooth rotation of the protrusion 85 provided on the disc 63. The resilience of the elasticity means (87).

The elastic space 87 is formed in the form of a groove or hole in the inside of the disk 63 as shown in FIG. 11 to provide a flow space so that the disk 63 is elastically deformed. The elastic space 87 is formed in a part of the disk 63 provided with the projection 85 as shown in the drawing to weaken the rigidity of the portion adjacent to the projection 85. 11, when the projection 85 provided on the outer side rotates in a state of being engaged with the projections and depressions 73 of the ring gear 61, a portion of the disk 63 on which the projection 85 is formed (Move slightly) of the projection 85 in accordance with the elastic deformation of the elastic space 87, so that it can rotate smoothly.

In addition, the adjuster 60 may further include a rotation preventing means.

The rotation preventing means prevents the cover 65 coupled to the outside of the lens 13 from rotating together with the lens 13 when the lens 13 to which the disk 63 is coupled rotates, And may include an engaging end 75 and an engaging jaw 66, as shown.

The engaging end portion 75 is formed by protruding from the end of the connecting shaft 71 or cutting one end of the connecting shaft 71 so that a flat wall surface is formed at the end of the connecting shaft 71.

The engaging protrusion 66 is formed on the inside of the cover 65 with a groove corresponding to the shape of the engaging end portion 75.

The rotation preventing means is provided in a state in which the engaging end portion 75 of the connecting shaft 71 is fitted to the engaging jaw 66 of the cover 65 when the cover 65 is fixed to the connecting shaft 71, The wall of the engaging step 66 is restrained by the flat portion formed on one side surface of the cover 65 so that the movement of the cover 65 is prevented.

The operation of the helmet 1 according to the preferred embodiment of the present invention will now be described.

The helmet 1 according to the present invention protects the head through the outer covering 3 and protects the neck through the neck hood 16 provided behind the outer covering 3 and protects the face region through the lens 13 Protect.

In the helmet 1 according to the present invention, the headband 7 is connected to the fixed band 5 attached to the inner circumferential surface of the helmet 1 by the band connecting means 20. The band connecting means 20 is configured to connect the male and female fasteners 23 and 21 of the fastening band 5 and the headband 7 directly or by means of the connecting strap 25 as shown in Figures 5 to 9 The male fastener 21 of the connecting strap 25 is inserted into the female fastener 23 formed at the upper end of the fastening band 5 as shown in FIG. At this time, the headband 7 and the connecting band 25 are fixed to the fixing band 5 and the connecting band 25 by the conventional connecting structure such as the fitting protrusion 53 and the snap hole 55, Before or after the connection of the fixed band 5 and the connection band 25, they are coupled to each other.

6, when the male fastener 21 of the connecting strip 25 is inserted into the female fastener 23 of the fastening band 5, the male fastener 21 of the male fastener 21, The portion 33 pushes the snap portion 41 to the outside of the fixing band 5 and deforms it, as shown in Fig. The head portion 33 is pushed into the pockets 49 of the body 45 of the engaging portion 43 along the inclined surface 51. Then, At this time, the stem portion 31 of the male fastener 21 enters along the fastening groove 47 of the fastening portion 43.

7 and 8, when the head portion 33 of the male fastener 21 is pushed into the body 45 of the fastening portion 43 of the female fastener 23, the head portion 33 And the head portion 33 is accommodated in the pocket 49 of the body 45 by the retracted snap portion 41 and is restrained do.

When the male and female fasteners 23 and 21 of the band connecting means 20 are thus fastened as shown in Fig. 7, the external force applied to the connecting band 25 in a direction perpendicular to the surface of the fastening band 5 The inverted U-shaped body 45 of the engaging portion 43 prevents the head portion 33 from being separated from the connection band 25 and is connected downward in the direction parallel to the surface of the fixed band 5 With respect to the external force applied to the band 25, the tip end of the snap portion 41 blocks the head portion 33. Particularly, when an external force is applied in a direction perpendicular to the surface of the fixed band 5, the direction of the external force applied to the connecting strip 25 is almost perpendicular to the direction of the force causing the snap reaction force of the snap portion 41, Unlike the conventional snap coupling in which the snap coupling is easily separated even if the external force is in the same direction as the direction of the snap reaction force, the engagement of the male and female fasteners 23 and 21 according to the present invention, Even if the connecting strap 25 is pulled out of the fixing strap 5 before pushing out the strap 5 outward from the inside of the fixing strap 5 with a finger or the like as shown in Fig. 9, (5). Therefore, the band connecting means 20 of the present invention can maintain a substantially permanent connection like a conventional fastening structure such as a rivet or the like even though it is a snap fitting structure.

As another embodiment of the present invention, the band connecting means 20 can be used not only for connecting the fixed band 5 or the headband 7 used for the helmet 1, Like members, and the basic configuration is the same as that of the male and female fasteners 23 and 21 and the connecting strip 25 described above, so that a detailed description thereof will be omitted.

On the other hand, both ends of the lens 13 are rotatably coupled to the outside of the envelope 3 by the adjuster 60 to open and close the front of the envelope 3. [ At this time, the lens 13 is connected to the outer sheath 3 as the disc 63 coupled to both ends is inserted into the ring gear 61, and as the disc 63 rotates, And the protrusion 85 of the disc 63 is rotated step by step as it is caught by the protrusions 73 formed in the ring gear 61 and rotated. That is, since the angle of the lens 13 can be adjusted while rotating stepwise, it is possible to adjust the angle of the lens 13 according to the needs of the wearer so as to maintain a part of the face portion opened / closed.

11, when the disc 63 is rotated while being caught by the protrusions 73 formed in the ring gear 61, the disc 63 is elastically deformed by the elastic space 87 formed inside, A fluid space is provided between the projection 85 and the concavo-convex 73 to smoothly rotate, thereby rotating the lens 13 smoothly.

Since the cover 65 is coupled to the outside of the lens 13, when the lens 13 rotates, the cover 65 can be rotated together with the lens 13. As shown in FIG. 10, The engaging protrusion 66 is fixed by the flat portion formed on one side of the engaging end portion 75 while the engaging end portion 75 of the connecting shaft 71 is fixed in the state of being fitted in the engaging protrusion 66 It is possible to prevent rotation by the lens 13 as the movement is restricted.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

1: helmet 3: sheath
5: Fixing band 7: Headband
9: chin strap 11: cushion pad
13: lens 15: inner diameter adjuster
20: belt connecting means 21: male fastener
23: female fastener 25: connecting strip
31: stem portion 33: head portion
41: snap portion 43:
45: body 47:
49: pocket 51:
60: Azimeter 61: Ring gear
63: Disc 65: Cover
73: unevenness 85: projection

Claims (5)

A sheath (3) wrapped around the wearer's head;
A fixing band 5 attached to an inner peripheral surface of the outer shell 3;
A headband (7) connected to the fixed band (5) and fitted to the head;
Band connecting means (20) for connecting the headband (7) to the fixed band (5);
A lens 13 to which both ends are rotatably fixed to the outside of the outer shell 3; And
And an adjuster (60) for fixing the lens (13) to the outer side of the outer shell (3) so that the rotation angle can be adjusted,
The adjuster (60)
A ring gear 61 provided on both sides of the outer shell 3 in the form of a boss and provided with concave and convex portions 73 on the inner circumferential surface thereof and having a connecting shaft 71 protruding from the center thereof;
Is integrally fixed to both ends of the lens 13 and inserted into the ring gear 61 to rotate and is engaged with the projections and recesses 73 of the ring gear 61 and is rotated stepwise along the projections and recesses 73 A disk 63 having a projection 85;
A plate-like cover 65 coupled to the outside of both ends of the lens 13 to conceal the disc 63; And
And a coupling member 67 penetrating the cover 65 and the disk 63 sequentially and fastened to the coupling shaft 71 of the ring gear 61 provided on the shell 3,
The band connecting means (20)
A male fastener (21) protruding from either the fixed band (5) or the headband (7); And
And a female fastening hole (23) penetrating through the other of the fixing band (5) or the headband (7) to correspond to the male fastening hole (21) so as to sandwich the male fastening hole (21) ,
The female fastener (23)
When the male fastener 21 is inserted, a snap reaction force acts on the coaxial axis of the male fastener 21, and after the male fastener 21 is fitted, the male fastener 21 is constrained in the radial direction A snap portion 41 which is made of a metal; And
And an engaging part 43 for engaging and fixing the male fastener 21 on an opposite side of the snap part 41 after the male fastener 21 is inserted,
The male fastener (21)
A stem portion (31) protruding from a wall surface of either the fixed band (5) or the headband (7); And
And a head portion (33) that is enlarged at the tip of the stem portion (31) and forms a fitting groove (37) between the stem portion (31) and the wall surface. The apparatus according to claim 1, wherein the adjuster (60)
And elastic means for providing elasticity to the disc 63 to induce smooth rotation of the protrusion 85 provided on the disc 63,
Wherein the elastic means comprises:
A portion of the disk 63 on which the protrusion 85 is formed is elastically deformed by weakening the stiffness of the portion of the disk 63 by forming a groove or hole in the disk 63, And an elastic space (87) for allowing the rotation of the protrusion (85) in a state of being engaged with the protrusion (73). The apparatus according to claim 1, wherein the adjuster (60)
Further comprising rotation preventing means for preventing rotation of the cover (65) by rotation of the lens (13)
The rotation preventing means
An engaging end portion 75 formed at an end of the connecting shaft 71; And
(66) formed inside the cover (65) and restrained while being fitted to the engagement end (75) to prevent rotation of the cover (65). delete [2] The apparatus according to claim 1, wherein the engaging portion (43)
A body 45 protruding from the wall surface of the other of the fixed band 5 or the headband 7 to receive the head portion 33 and opened toward the snap portion 41; And
And a hooking groove (47) cut from an open end of the body (45) to an outer surface and into which the stem (31) is fitted.

Images