JP5762178B2 - Buckle with belt and helmet - Google Patents

Description

  The present invention relates to a helmet used for protecting a head of school children, cyclists, and the like, and a buckle with a belt attached to various belts including a chin strap of the helmet.

  Conventionally, when this type of helmet is used for infants or children, for example, if the buckle is positioned under the chin, it may be difficult for a parent or the like to perform the attaching / detaching operation to visually check and the jaw skin may be pinched by the buckle. there were. Therefore, when the helmet is attached to the infants and the chin belt is fastened, the length of the chin belt and the attachment position of the buckle are adjusted so that the buckle is positioned on the side of the face.

For example, a helmet described in Patent Document 1 has been proposed. This helmet has a pair of ear straps formed on the inner peripheral surface of the cap body, and is composed of a chin strap connected to one ear strap and a buckle connecting the chin strap and the other ear strap. The buckle can be fitted with a male buckle attached to the end of the chin strap to a female buckle connected to the other ear strap.
The female buckle has guide grooves formed on both the front and back surfaces for attaching the ear straps in a V shape. The male buckle has two long holes on the front and back across the bridge, and the free end of the chin strap is wound around the bridge through the first long hole on the fitting side of the male buckle. By passing through the second long hole, the chin strap is locked so as not to loosen and the length can be adjusted.

  An example of this type of buckle male buckle is shown in FIG. This male buckle 1 is formed with a first elongated hole 5 and a second elongated hole 6 sandwiching a bridge 4 in a base 3 of a fitting claw 2 fitted to a female buckle. The end portion 8a is wound around the bridge 4 through the first long hole 5, and the free end portion 8a is overlapped with the proximal end portion 8b of the chin belt 8 through the second long hole 6 to contact the end portion 3a of the base portion 3. To the state.

In FIG. 9A, when a force is applied to the portion of the chin belt 8 that is in contact with the side of the face of a child or the like wearing a helmet, for example, in the downward direction (arrow A direction), the proximal side of the chin belt 8 Since the pressing force in the direction of arrow C is applied to the portion 8b, the belt 8 does not move. Further, when the free end portion 8a of the chin belt 8 is pulled downward (in the direction of arrow B), the pressing force C does not work, so that it can move.
On the other hand, in FIG. 9 (b), when a force in an obliquely downward direction (arrow A 'direction) is applied to the proximal end side portion 8b of the chin belt 8, the pressing force in the arrow C direction is small. There is a disadvantage that both the end portion 8b side and the free end portion 8a side can move and relax.

  On the other hand, in the buckle described in Patent Document 2, in the configuration in which the chin belt 8 is wound around the bridge 4 of the male buckle 1 as described above, a pressing piece is projected from the female buckle. When the male buckle and the female buckle are fitted, the chin belt 8 wound around the bridge 4 is pressed with a pressing piece provided on the female buckle, regardless of the angle in the extending direction of the chin belt 8. It is configured to lock.

JP 2011-52349 A JP 2002-65315 A

  However, in the buckle described in Patent Document 2 described above, since the pressing piece protrudes from the female buckle, there is a risk that the pressing piece may come into contact with the hand in the helmet for infants and children during the attaching / detaching operation. It is not preferable. Moreover, in the state where the male buckle and the female buckle are separated, the jaw belt cannot be locked by the pressing piece. Therefore, if a force is applied to the jaw belt in an obliquely downward or lateral direction, May move or relax, which is not preferable. In addition, there is a drawback that the number of parts increases due to the pressing piece, and the manufacturing becomes complicated.

  In view of such circumstances, an object of the present invention is to provide a safe buckle with a belt that is surely engaged and held by the belt and does not loosen carelessly, and a helmet equipped with the buckle.

The buckle with a belt according to the present invention is a buckle in which a female buckle and a male buckle can be fitted. One of the female buckle and the male buckle sandwiches the first insertion hole with respect to the end portion on the fitting part side of the buckle. An engaging portion is provided, and a hooking portion is provided across a second insertion hole formed on the opposite side of the first insertion hole with respect to the engaging portion, and the belt wound around the hooking portion is provided. A double belt in which one is overlapped with the other of the belt through the second insertion hole and wound with the locking portion through the first insertion hole, and the locking portion is wound around the end of the fitting portion side A protrusion that can contact the protrusion is formed in the first insertion hole so as to face the locking portion, and the locking portion is wound with the female buckle or the hooking portion side in the extending direction of the male buckle as the downward direction. The other side of the belt that has been stuck in the direction from the lower side to the horizontal direction prevents it from loosening even when a load is applied. And, in the obliquely upward direction of orientation is characterized in that to be able to loosen the load is applied.
According to the buckle with a belt according to the present invention, in the female buckle or the male buckle to which the belt is attached, one of the belts wound by the hook portion separated from the fitting portion side passes through the second insertion hole, and the belt As the double belt overlaps with the other side of the belt and is attached by winding the locking portion through the first insertion hole, the buckle is fitted on the other side of the double belt wound with the locking portion. Even if a force pulling to the opposite side is applied or a force is applied in a direction substantially perpendicular to that direction, the belt is loosened because a pressing force is applied in the direction of pressing the double belt against the locking portion. The belt is held in a locked state without being loosened, and the belt can be prevented from loosening at the buckle. Further, when a pulling force is applied to one of the belts located on the side where the double belt is locked, the belt becomes movable.
In the present invention, it is preferable that one of the belts is a part on the free end side of the belt and the other is a base end side part.

A helmet according to the present invention includes a cap body, a pair of ear belts connected at both ends to the inner peripheral surface of the cap body, a belt connected to one ear belt, and the belt and the other ear belt or the other. A buckle with any one of the belts described above for removably connecting to another belt connected to the ear belt.
According to the helmet of the present invention, when the cap body is attached to the wearer's head and the belt and the ear belt or another belt are fastened with the buckle, the buckle is positioned on the side of the face, In the attached female buckle or male buckle, for example, a downward pulling force that is opposite to the fitting portion side of the buckle is applied to the other of the double belts around which the locking portion is wound, or approximately perpendicular to the direction. For example, even if a force is applied in the lateral direction, the belt is not loosened and is held in a locked state, and the belt can be prevented from loosening. Further, when a pulling force is applied to one of the belts located on the side where the double belt is locked, the belt becomes movable.

  According to the buckle with a belt and the helmet according to the present invention, with respect to the buckle provided on the side portion of the helmet, one of the belts wound around the hook portion overlaps with the other through the first insertion hole. Even when force is applied to pull the other side of the belt in a direction opposite to the fitting portion side of the buckle, for example, downward or diagonally downward, or in a direction orthogonal to the opposite direction, for example, in the lateral direction. Since the pressing force is applied in the direction in which the double belt is pressed against the engaging portion, the belt can be prevented from being loosened without being moved or loosened. In addition, since the belt can be prevented from moving or slack without providing another member for pressing the belt such as a pressing piece on the other member of the buckle, the number of parts can be reduced and the structure can be simplified.

1 is a perspective view of a state in which a wearer wears a helmet according to an embodiment of the present invention. It is a top view of the female buckle of a buckle. It is a top view of a male buckle. It is a principal part perspective view which shows the buckle of a helmet, (a) is the figure of the state which isolate | separated the male buckle and the female buckle, (b) is a figure of the state which fastened the male buckle and the female buckle. It is the principal part perspective view of the state which fastened the buckle of the helmet, (a) is the figure of the state which fastened the belt, (b) is the figure of the state which loosened the belt. It is a figure of the state which applied the force in the downward direction in the state which attached the belt to the male buckle of a buckle. It is a figure of the state which applied the force to the horizontal direction in the state which attached the belt to the male buckle of a buckle. It is a figure of the state which applied the force diagonally upwards in the state which attached the belt to the male buckle of a buckle. It is a figure which shows the state which mounted | wore the conventional buckle with the chin belt, Comprising: (a) is a figure of the state which applied force downward, (b) is a figure of the state which applied the force diagonally downward.

In the buckle with a belt according to the present invention, it is preferable that a protruding portion capable of coming into contact with the double belt that winds the locking portion protrudes from the first insertion hole at the end portion on the fitting portion side.
Since the protruding portion is formed to protrude from the end on the fitting portion side to the first insertion hole with respect to the double belt that winds the locking portion, the outer belt of the double belt moves. The belt can be prevented from moving by the protruding portion even if it is likely to relax.
In addition, according to the buckle according to the present invention, since the projecting portion can be integrally formed with a female buckle or a male buckle, the number of parts does not increase.

Moreover, the latching | locking part and a hook part may be mutually shifted | deviated and arrange | positioned by the both sides orthogonal to the extension direction of the main body of a female buckle or a male buckle.
By shifting the positions of the locking portion and the hooking portion to both sides orthogonal to the extending direction of the female buckle or the male buckle main body, the shift of the belt and the loosening can be suppressed.
Note that the portion of the locking portion that faces the protruding portion may be a flat portion. In this case, when a force in the pulling direction is applied to the belt, there is a gap between the protruding portion and the flat portion of the locking portion. Thus, the belt suppresses relaxation and movement due to the locking force of the protruding portion and the friction between the flat portion.

  In the helmet according to the present invention, the buckle with the belt is positioned on the side of the wearer's face when the cap body is worn, so that the buckle can be easily attached and detached.

Hereinafter, a buckle according to an embodiment of the present invention and a helmet equipped with the buckle will be described with reference to FIGS.
As shown in FIG. 1, the helmet 10 according to the present embodiment is used by, for example, infants and school children. The helmet 10 includes a cap body 11 made of, for example, a synthetic resin having a substantially hemispherical or convex curved surface shape, a pair of ear belts 12 having a substantially triangular shape attached to the inner surface of the cap body 11, and one of the ear belts 12. A chin belt 13 connected to the ear belt 12 via a triangular can (not shown) is provided. Further, a cushion pad (not shown) and a size adjuster 14 are attached in the cap body 11.
The chin belt 13 and the other ear belt 12 are provided with a buckle 16 for fastening the two detachably.

  The buckle 16 shown in FIGS. 2 and 3 includes a female buckle 17 and a male buckle 18. The female buckle 17 shown in FIG. 2 is attached to the ear belt 12, for example, and includes a fitting recess 19 into which the male buckle 18 is fitted, and a substantially fan-shaped belt engaging portion 20. The belt engaging portion 20 has a first long hole 22a and a second long hole 22b on the front and rear sides of the support portion 21. As shown in FIGS. 4 and 5, the ear belt 12 bent into a substantially V shape is bent at the support portion 21, and the belt portions on both sides thereof are passed through the first long hole 22 a and the second long hole 22 b from the opposite side. Thus, the belt engaging portion 20 is attached.

The male buckle 18 shown in FIG. 3 includes a pair of elastic claws 24 a and a guide shaft 24 b provided therebetween, and engages the fitting convex portion 24 that can be fitted into the fitting concave portion 19 with the jaw belt 13. And a base portion 25 for the purpose. The base portion 25 includes a locking portion 26 that divides the substantially rectangular frame portion 25a into two portions, and a hook portion 27 provided at the end opposite to the fitting convex portion 24 as a part of the frame portion 25a. The first insertion hole 28 is formed between the locking portion 26 and the fitting convex portion 24, and the second insertion hole 29 is formed between the locking portion 26 and the hooking portion 27.
And in the center longitudinal cross-sectional view of the male buckle 18 shown in FIG. 6, the hook part 27 is made into the substantially teardrop shape, for example, and the latching | locking part 26 is made into the substantially lemon shape. Further, a locking portion 26 and a hooking portion 27 are formed at positions shifted on both sides in the direction orthogonal to the extending direction (longitudinal direction) of the male buckle 18.

Next, a configuration in which the chin belt 13 is attached to the base 25 formed on the male buckle 18 will be described with reference to FIGS. 5 and 6. The chin belt 13 is attached to the base portion 25 shown in FIG. 6 and wound around the hook portion 27. The belt portion on the end side with respect to the hook portion 27 serves as a free end portion 13a, and the base end. The belt portion on the side was used as the base end portion 13b. The chin belt 13 is formed by winding the boundary between the free end portion 13a and the proximal end side portion 13b in a loop shape so that the free end portion 13a and the proximal end side portion 13b are overlapped.
When the chin belt 13 is mounted, the free end portion 13a passes through the first insertion hole 28 on the fitting convex portion 24 side of the base portion 25, winds the hook portion 27 from the outside, and passes through the second insertion hole 29. The hook portion 27 is surrounded by a loop. The free end portion 13a of the chin belt 13 is overlapped with the proximal end portion 13b in a stacked state, and is mounted so as to extend downward by winding the locking portion 26 in a state of overlapping the two layers.

Moreover, as shown in FIG. 6, the protrusion part 30 curved in the cross-sectional substantially J shape protrudes from the end surface 24c which forms the 1st penetration hole 28 of the engagement convex part 24, for example in the thickness direction center part. . It is assumed that the distal end of the projecting portion 30 is in a position where the free end portion 13a and the proximal end portion 13b are in contact with or slightly separated from the proximal end portion 13b of the jaw belt 13 in which the double ends are stacked. In addition, the protrusion 30 is curved in a direction in which the chin belt 13 is pulled in the direction of the locking portion 26 from the hook portion 27, and the movement of the chin belt 13 in the direction can be allowed, and in the reverse direction. Will resist movement.
And the area | region which opposes the protrusion part 30 of the latching | locking part 26 may be made into the plane part 26a, for example, and the space | interval of this plane part 26a and the protrusion part 30 is thickness of two sheets on which the chin belt 13 was laminated | stacked. It is set almost the same as d.

The buckle 16 according to the present embodiment can adjust the length of the chin belt 13. For example, if the free end portion 13a of the chin belt 13 attached to the base portion 25 of the male buckle 18 is loosened by hand and the proximal end portion 13b is pulled, the length of the chin belt 13 can be increased, and the wearer with a relatively large face The chin belt 13 can be tightened in accordance with the above. On the other hand, if the proximal end portion 13b is loosened from the locking portion 26 and the hooking portion 27 and the free end portion 13a is pulled, the chin belt 13 is tightened to fit the wearer with a relatively small face. Can do.
In the present embodiment, as an example, the material of the buckle 16 including the female buckle 17 and the male buckle 18 is, for example, polyacetal or nylon, and the material of the chin belt 13 and the ear belt 12 is, for example, polypropylene, nylon, or polyester. Moreover, the thickness of the chin belt 13 is, for example, about 1.2 mm.

Since the helmet 10 and its buckle 16 according to the present embodiment have the above-described configuration, as shown in FIG. 1, a wearer such as a child or an infant wears the helmet 20 and the one ear belt 12 has a substantially triangular shape. The fitting convex part 24 of the male buckle 18 attached to the end part of the chin belt 13 connected to the other ear belt 12 is fitted into the fitting concave part 19 of the female buckle 17 of the buckle 16 provided on the top of the belt.
In this state, the chin belt 13 provided on the male buckle 18 of the buckle 16 has a base end 25a and a base end of the chin belt 13 surrounding the hook portion 27 in a loop shape at the base 25 as shown in FIG. 6, for example. It is assumed that the side portion 13b is overlapped through the first insertion hole 28, bent at the locking portion 26, and extended downward.

A load was applied to the buckle 16 of the helmet 10 in the upward direction (arrow E direction), and a force was applied in the downward direction (arrow A direction) to the proximal end portion 13b of the chin belt 13 that fixes the wearer's chin. In this case, a relative force for pulling the proximal end portion 13b of the chin belt 13 in the direction of arrow A works. Then, the proximal end portion 13 b of the chin belt 13 is pressed relatively to the locking portion 26 via the stacked free end portions 13 a, and the proximal end portion 13 b is moved to the locking portion 26 in the vicinity of the protruding portion 30. The pressing force F that is pressed toward the front acts and prevents the proximal end portion 13b of the chin belt 13 from moving or loosening with respect to the locking portion 26 due to frictional force.
On the other hand, when a force is applied downward (in the direction of the arrow B) to the free end portion 13a of the chin belt 13 positioned below the proximal end portion 13b, no load is applied to the proximal end portion 13b. Since the pressing force F does not work or is small, the free end portion 13a is movable downward (arrow B direction), and the proximal end portion 13b of the chin belt 13 can be fastened to the wearer's chin.

Further, as shown in FIG. 7, a force is applied to the buckle 16 of the helmet 10 in the upward direction (arrow E direction) and the lateral direction (arrow A) is applied to the proximal end portion 13b of the chin belt 13 that fixes the wearer's chin. Direction), a relative force that pulls the proximal end portion 13b in the direction of the arrow A works. Then, a pressing force F that presses the locking portion 26 via the stacked free end portion 13a is applied to the proximal end side portion 13b of the chin belt 13, and the chin belt 13 is pressed against the locking portion 26 by a frictional force. Stop moving and loosening.
Therefore, it is possible to prevent the chin belt 13 from being loosened even if it is pulled not only downward but also obliquely downward or laterally (horizontal).
On the other hand, when a load is applied downward (in the direction of arrow B) to the free end portion 13a of the chin belt 13 positioned below the proximal end portion 13b, if no load is applied to the proximal end portion 13b, Since the pressing force F does not work or is small, the free end portion 13a is movable downward (arrow B direction) with respect to the proximal end portion 13b, and the chin belt 13 can be tightened on the wearer's chin. .

Further, as shown in FIG. 8, when a force is applied obliquely upward (in the direction of arrow A) to the proximal end portion 13b of the chin belt 13 that fixes the wearer's jaw, the proximal end portion 13b of the chin belt 13 is applied. Since the pressing force F does not act on the base end side portion 13b without pressing the laminated free end portion 13a or the locking portion 26, the base end side portion 13b of the chin belt 13 is free from the free end portion 13a or the protruding portion. It can move in the direction of arrow A with respect to 30, and the chin belt 13 can be loosened.
On the other hand, when a force is applied downward (in the direction of arrow B) to the free end portion 13a of the chin belt 13 positioned on the lower side of the base end side portion 13b, the pressing force F does not work in the same manner. The portion 13a is movable downward (arrow B direction) with respect to the base end side portion 13b, and the chin belt 13 can be fastened to the wearer's chin.

As described above, according to the buckle 16 and the helmet 10 according to the present embodiment, the jaws 13 of the chin belt 13 provided on the side of the helmet 10 are not only downward but also obliquely downward or lateral (horizontal). Even when the proximal end portion 13b of the belt 13 is pulled, the chin belt 13 does not move or loosen. Further, the provision of the protruding portion 30 can prevent the double chin belt 13 bent by the locking portion 26 from loosening. Moreover, movement and slack of the chin belt 13 can be prevented without providing a member for pressing the chin belt 13 such as a pressing piece on the female buckle 17 of the buckle 16.
Further, according to the buckle 16 according to the present embodiment, since the protruding portion 30 can be integrally formed with the male buckle 18, the number of parts does not increase and the manufacture is easy.

In addition, this invention is not limited to the buckle 16 by the above-mentioned Example, A various change can be performed unless the summary of this invention is changed. Next, a modification of the embodiment of the present invention will be described.
In the buckle 16 according to the above-described embodiment, the substantially plate-like protrusion 30 is formed to protrude from the end surface 24c forming the first insertion hole 28 on the fitting protrusion 24 side of the base 25 of the male buckle 18. 30 does not necessarily have to be curved in a J-shaped cross section, may be linear or the like, may be curved in the opposite direction, and may be chamfered in an R shape at the tip.
Moreover, the protrusion part 30 does not need to be plate shape, and can employ | adopt the protrusion part of suitable shapes, such as a dot shape and a convex curved surface. Further, it is not necessary to form a protruding portion on the end face 24c, and a similar effect can be exhibited if the gap with the locking portion 26 is about d.

In the above-described embodiment, the female buckle 17 is attached to the triangular belt 12 and the jaw belt 13 is wound around and fixed to the base 25 of the male buckle 18. Instead, the male buckle 18 is attached to the triangular belt 12. The female buckle 17 may be attached to the chin belt 13, the base 25 may be provided on the female buckle 17, and the chin belt 13 may be wound around and fixed to the base 25.
Further, another belt may be attached to the triangular belt 12, and the female buckle 17 or the male buckle 18 may be fixed to the other belt.
Moreover, although the helmet 10 according to the present embodiment is used for infants and school children, the present invention is not limited to such applications and can be used for appropriate applications such as construction. The buckle 16 attached to the helmet 10 is not limited to the configuration located on the side of the face. Needless to say, the belt-attached buckle 16 is not limited to a helmet, and can be used for any purpose such as a bag, a bag, a rucksack, a camera, or a case thereof.

DESCRIPTION OF SYMBOLS 10 Helmet 13 Jaw belt 13a Free end part 13b Base end side part 16 Buckle 17 Female buckle 18 Male buckle 19 Fitting recessed part 24 Fitting convex part 24c End surface 25 Base part 26 Locking part 27 Hook part 28 First insertion hole 29 1st insertion hole 29 Double insertion hole 30 Projection

Claims (3)

In a buckle with a belt that can fit a female buckle and a male buckle,
One of the female buckle and the male buckle is provided with a latching portion with a first insertion hole sandwiched with an end portion on the fitting portion side of the buckle, and the first insertion hole with respect to the latching portion. And a hook is provided across the second insertion hole formed on the opposite side,
One of the belts wound around the hooking part is attached to the other part of the belt through the second insertion hole and wound around the locking part through the first insertion hole ,
At the end on the fitting portion side, a protrusion that can contact the double belt that winds the locking portion is formed to protrude from the first insertion hole so as to face the locking portion,
The hooking portion side in the extending direction of the female buckle or the male buckle is the downward direction,
The other side of the belt around which the locking part is wound is prevented from loosening even when a load is applied in the direction from the lower side to the horizontal direction, and can be loosened when a load is applied in the obliquely upward direction. A buckle with a belt characterized by. 2. The buckle with a belt according to claim 1, wherein the locking portion and the hooking portion are disposed so as to be shifted from each other on both sides orthogonal to the extending direction of the female buckle or the male buckle. A cap body, a pair of ear belts connected at both ends to the inner peripheral surface of the cap body, a belt connected to one ear belt, and the belt and the other ear belt or the other ear belt A helmet with a belt, comprising: the buckle according to claim 1 or 2 for detachably connecting to another belt.

Images