JPH0444586Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (1) Industrial field of application The invention is based on a pair of chin straps each having one end connected to a cap body, each of which has two ends that constitute a releasable fastener. The present invention relates to a helmet connected to each member.

(2) Conventional technology Conventionally, such helmets have been developed by, for example,
It is publicly known from Publication No.-20529 and the like.

(3) Problems to be solved by the invention By the way, in the above-mentioned conventional device, one of the pair of chin straps is wound around a winding part movably disposed on one of the two members constituting the fastening member. When the chin strap is hung and a traction force is applied to the chin strap, the wrapping portion moves so as to strongly tighten and hold the chin strap between the member and the chin strap. The length of the chin strap is adjusted by adjusting the position of the chin strap around the wrapping part, but the length of the chin strap is adjusted once to apply a traction force to the chin strap. After the chin strap is tightened, as mentioned above, the chin strap is strongly clamped, and a relatively strong force is required to move the hooked part in the opposite direction to the tightening direction, making readjustment of the chin strap easy. It's hard to say.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a helmet in which the length of the chin strap can be easily adjusted.

B. Structure of the invention (1) Means for solving the problem According to the invention, one chin strap is wrapped around an engaging piece that can be engaged with one member and is separate from the member. At the same time, both sides of the part wrapped around the engaging piece are inserted into the one member, the other chin strap is directly connected to the other member, and the engaging piece has an insertion side on which the chin strap is inserted. A winding hole and an extraction side winding hole on the side from which the chin strap is pulled out are formed to form a winding part on which the chin strap is to be wound between the two winding holes, and the one member has: A locking portion is provided that becomes narrower as it moves away from the engaging piece and has an end wider than the wrapping portion on one side of the locking portion. An insertion hole for inserting the chin strap toward the mating side and an extraction hole for extracting the chin strap from the engaging piece are provided at least on both sides of the end of the locking part on the side remote from the engaging piece. and is provided on the one member.

(2) Effect According to the above configuration, when a traction force is applied to the chin strap, the engaging piece is pulled toward one member side and engaged, and in this state, the chin strap is pulled toward one side of the engaging part of the chin strap. It bends and makes strong contact with both side edges of the end, and the resulting large frictional force ensures that the chin strap remains in place.
Moreover, in order to adjust the length of the chin strap, pulling the engaging piece in the direction away from the one member can be easily done without requiring strong force, and in this state, the engaging piece can be pulled in the direction away from the one member. It is easy to adjust the position at which the chin strap is wound around the winding part.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, Fig. 1 shows a side view of a bicycle helmet, and Fig. 2 shows a partially cut-away front view as seen from the direction of the arrow in Fig. 1. 3, which shows a cross section taken along the - line in FIG. 2, FIG. 4, which shows a partially cut-out side surface of the bicycle helmet, and FIG. The cap body 1 has a hemispherical shell 2 made of hard reinforced resin.
and a shock-absorbing liner 3 made of expanded polystyrene that is fitted into the shell 2.

The lower end of the shock absorbing liner 3 is received at the lower end of the shell 2 except for the front part thereof in the fitted state. That is, at the rear lower end of the shell 2, a rear liner receiving part 4 that slopes inward as it goes downward is connected, and at both lower ends of the shell 2, both circumferential ends of the rear liner receiving part 4 are connected. Side liner receiving portions 5 are provided in series, each of which extends smoothly and slopes inwardly toward the bottom. is set small. Further, as shown in FIG. 6, at the lower front end of the shell 2, at a position slightly forward of each of the side liner receiving portions 5, there is a slight inward direction at approximately right angles to the inner surface of the shell 2. Protruding engagement protrusion 6
are protruding from each other.

On the other hand, the outer surface of the shock absorbing liner 3 is formed in a shape that roughly corresponds to the inner surface of the shell 2,
The rear lower end outer surface 3a of the shock absorbing liner 3 is formed into an inclined surface corresponding to the rear liner receiving portion 4, and the lower end outer surfaces 3b on both sides of the impact absorbing liner 3 are formed into inclined surfaces corresponding to the side liner receiving portions 5. Ru. Further, the engagement protrusion 6 is provided at the lower front end of the shock absorbing liner 3.
A pair of locking recesses 7 are provided for engaging with each other.

The shock absorbing liner 3 has a rear lower end outer surface 3a.
and the side lower end outer surface 3b of the rear liner receiving portion 4
By engaging the engaging protrusion 6 with the locking recess 7 while being fitted into the shell 2 so as to be received by the side liner receiving portions 5, the state of fitting into the shell 2 is maintained.

A first cushion 8 made of urethane foam is attached to the inner surface of the shock absorbing liner 3 via hook and loop fasteners 10, which contacts the front and upper part of the wearer's head when worn, and also attaches to both sides of the head when worn. A second cushion 9 made of urethane foam that abuts the front and rear portions is attached via hook-and-loop fasteners 11.

On the inner surface of the shock absorbing liner 3, there are a pair of ventilation grooves 12 that are parallel to each other and extend back and forth near the center in the width direction, and a pair of ventilation grooves that are parallel to each other and extend back and forth on both sides of the ventilation grooves 12. 13, and the front and rear ends of each ventilation groove 12, 13 are closed. Further, in the front part of the shock absorbing liner 3, there is a pair of communication holes 14 that open toward the front while communicating with the front ends of the pair of ventilation grooves 12, and a pair of communication holes 14 that open toward the front while communicating with the front ends of the pair of ventilation grooves 12, and a pair of communication holes 14 that communicate with the front ends of the ventilation grooves 13 on both sides of the communication holes 14. A pair of communication holes 15 opening toward the front are bored in the upper part of the shock absorbing liner 3, and each ventilation groove 1 is provided in the upper part of the shock absorbing liner 3.
A pair of communication holes 16 that open upward while communicating with each other are drilled in the intermediate portions of the shock absorbing liner 3, and furthermore, a pair of communication holes 16 that open upward while communicating with each other are formed in the middle part of the shock absorbing liner 3, and a pair of communication holes 16 that open upward while communicating with each other are formed in the rear part of the shock absorbing liner 3. A pair of communication holes 17 that open toward the rear and a pair of communication holes 18 that open toward the rear while communicating with the rear end of the ventilation groove 13 are provided on both sides of the communication holes 17.

On the other hand, the shell 2 has ventilation holes 21 corresponding to the communication holes 14 to 18 of the shock absorbing liner 3, respectively.
~25 are drilled. That is, in the front part of the shell 2, there are a plurality of vent holes 21 formed in the shape of slits extending in the width direction of the shell 2 and arranged vertically to communicate with the pair of communication holes 14, and a plurality of vent holes 21 formed in the shape of slits arranged vertically in the width direction of the shell 2 to communicate with the pair of communication holes 14. A pair of communication holes 16 are provided in the upper part of the shell 2, and a pair of communication holes 16 are provided in the upper part of the shell 2.
A plurality of vent holes 22 formed in the shape of long slits in the width direction of the shell 2 are opened upward and are bored in the rear part of the shell 2 to communicate with a pair of communication holes 17. Two pairs of side-by-side ventilation holes 24 and a pair of ventilation holes 25 that communicate separately with the pair of communication holes 18 are formed so as to open toward the rear.

The ventilation grooves 12, 1 of such a shock absorbing liner 3
3 and the communication holes 14 to 18, and the vents 21 to 25 of the shell 2, the inside of the cap body 1 can be efficiently ventilated. That is, when riding a bicycle with the cap body 1 attached, the communication holes 17 and 18 and the ventilation holes 24 and 25 at the rear of the cap body 1
Negative pressure is generated in each of the ventilation grooves 12, 13.
Since the airflow towards the rear is generated, the cap body 1
Ventilation holes 21, 22 and communication holes 14, 1 at the front of the
5, and fresh air is introduced into the cap body 1 through the vent hole 23 and the communication hole 16 at the top of the cap body 1.

By the way, a strap 26 is connected to the cap body 1 in order to securely fix the cap body 1 to the head of the helmet wearer. This strap 26 includes a front support strap 27 and a rear support strap 28 fixed to the shock absorbing liner 3.
and a pair of chin straps 29, 3 which are connected to both ends of the support straps 27, 28 and can be fastened to each other.
0.

The front support string 27 is wound around the outer periphery of the shock absorbing liner 3 near the front, and is attached to the shock absorbing liner 3.
is glued to the outside surface of the That is, the shock absorbing liner 3
Insertion holes 31 are formed in both sides of the shock absorbing liner 3 near the front, and a support groove 32 is provided on the outer surface of the shock absorbing liner 3 connecting the insertion holes 31. On the other hand, the front support string 27 is connected to the shock absorbing liner 3.
is inserted into one of the insertion holes 31 from the inner surface side, wrapped around the support groove 32, and further inserted into the other insertion hole 3.
1 from the outside. Moreover, the front support string 27 is connected to the shock absorbing liner 3 at the portion corresponding to the support groove 32.
is glued to.

Further, the rear support string 28 is bonded to the shock absorbing liner 3 while being wrapped around the rear outer circumference of the shock absorbing liner 3. That is, a pair of insertion grooves 33 are provided at the rear of the shock absorbing liner 3, which are formed by cutting further downward from the lower ends of the pair of communication holes 17 provided near the center in the width direction of the shock absorbing liner 3. A support groove 34 connecting these insertion grooves 33 is provided on the outer surface of the shock absorbing liner 3. The rear support string 28 is inserted into one of the insertion grooves 33 from the inner side of the shock absorbing liner 3 and passes through the insertion groove 34.
and is further inserted into the other insertion groove 33 from the outside. Moreover, the rear support string 28 is connected to the support groove 3.
It is bonded to the shock absorbing liner 3 at a portion corresponding to 4.

Both ends of the front support string 27 and the rear support string 28 are connected to a pair of connectors 35, respectively. Thus, the portion of the front support string 27 that protrudes from the cap body 1 and the portion of the rear support string 28 that protrudes from the cap body 1 form a triangular shape corresponding to the ears of the wearer at the lower end of the cap body 1. Both support strings 27, 2 are formed in cooperation with
Both ends of 8 are connected to the connecting tool 35, respectively.

Each connector 35 is connected to one end of the chin straps 29, 30, respectively.
can be mutually fastened via a fastener 36 that can be fastened and released. That is, the fastener 36 is connected to the insert member 3
7 and a receiving member 38 into which the insert member 37 is to be removably inserted; The other chin strap 30 is directly connected to the receiving member 38.

Referring also to FIG. 7, which shows an enlarged cross section taken along the line - in FIG.
The receiving member 38 includes a fastening release elastic piece 3 that can be elastically engaged with the receiving member 38 when inserted into the receiving member 38, and can be released from the elastically engaged state by a pushing operation.
8a is provided.

The chin strap 29 is inserted through the insertion member 37 and the engaging piece 3
The chin strap 29, which is wrapped around the chin strap 7 and returned from the engaging piece 39, is inserted into the insert member 37, and is engaged when a traction force is applied to the chin strap 29 as shown by the arrow 46 in FIG. The piece 39 is the insertion member 37
The connected state between the chin strap 29 and the insert member 37 is maintained. That is, the engagement piece 39 has an insertion side winding hole 40 into which the chin strap 29 is inserted, and a hole 40 on the side where the chin strap 29 is inserted.
The extraction side winding hole 41 on the side from which the
Winding part 42 where the chin strap 29 should be wound between 0 and 41
A slit-like hole is formed so as to form a slit.
On the other hand, the insert member 37 has an engaging piece 39 of the chin strap 29.
The part 29a facing toward the side is on one side, and the chin strap 29
A locking portion 43 is provided such that the portion 29b on the side returned from the engagement piece 39 is along the other side. This locking portion 43 is formed to become narrower as it moves away from the engagement piece 39,
The end of the locking portion 43 on the engagement piece 39 side is connected to the engagement piece 3
It is formed wider than the winding part 42 at 9.
Moreover, insertion holes are provided on both sides of the end of the locking part 43 on the side remote from the engaging piece 39 in order to regulate the position of the chin strap 29 so that the chin strap 29 runs along both sides of the locking part 43. 44 and an extraction hole 45 are formed, and these insertion holes 44 and extraction holes 45
may be formed at least near the narrowest part of the locking part 43, that is, the end furthest from the engagement piece 39.

Further, when the engaging piece 39 is engaged with the insert member 37 due to the traction force acting on the chin strap 29, the engaging piece 39
A photographing section 47 for raising the image 9 is provided in a protruding manner.

Next, to explain the operation of this embodiment, the shock absorbing liner 3 has its rear lower end outer surface 3a and side lower end outer surface 3b received by the rear liner receiving part 4 and the side liner receiving part 5 of the shell 2, respectively. The front part of the shell 2 is fitted into the shell 2 from the rear side while being slightly bent in the expansion direction, and the engagement protrusion 6 is engaged with the locking recess 7 in this fitted state. Since the fitted state is maintained and it is not glued to the shell 2, the shell 2 and the shock absorbing liner 3 can be molded separately and assembled easily, and the shock absorbing liner 3 can be attached to the shell 2. The number of assembly steps can be reduced compared to those that are sealed and glued together.

Further, the front support string 27 and rear support string 28 of the strap 26 are glued while being wrapped around the outer periphery of the shock absorbing liner 3, so that the force from the strap 26 is not applied to the shell 2 when the helmet is worn. Therefore, the wall thickness of the shell 2 can be made relatively thin, and since the shock absorbing liner 3 can be received by the wearer's head, it is possible to tighten the shell 2 without increasing the strength of the shock absorbing liner 3. It can withstand the force applied from the string 26.

Furthermore, in the tightening strap 26, an engaging piece 39 around which one of the chin straps 29 is wound is engaged with the insertion member 37, and when a traction force is applied to the chin strap 29 in the direction shown by the arrow 46, the chin strap 29 is tightened. 29 frictionally engages with the locking member 43 with a relatively large force. That is, the locking member 43
The end on the engaging piece 39 side is the wrapping portion 42 of the engaging piece 39.
The chin strap 29 contacts both edges of the engagement piece 39 side of the locking portion 43 with strong force, and the strong frictional force prevents the chin strap 29 from slipping and maintains the engaged state. can be maintained reliably.

In addition, when adjusting the length of the chin strap 29, raise the capturing section 47 to separate the engaging piece 39 from the insertion member 37, and adjust the position of the chin strap 29 around the winding section 42. Bye. At this time, insert the engaging piece 39 into the insertion member 3.
7, it is possible to release the strong force from contacting the end of the locking portion 43 of the chin strap 29 on the side of the engaging piece 39, and therefore to move the chin strap 29 in its longitudinal direction. This makes it easier to adjust the length of the chin strap 29.

C. Effect of the invention As described above, according to the invention, one chin strap is
The chin strap is wrapped around an engaging piece that can be engaged with one member and is separate from the member, and both sides of the part that is wrapped around the engaging piece are inserted through the one member, and the other chin strap is Directly connected to the other member, the engaging piece has an insertion-side winding hole for inserting the chin strap and a pull-out side winding hole for pulling out the chin strap, and a hole between the two winding holes. A hole is formed in the one member to form a winding part around which the chin strap is to be wound, and the one end of the engaging piece becomes narrower as the distance from the engaging piece increases, and the end of the engaging side is wider than the winding part. A locking part is formed, an insertion hole for inserting the chinstrap toward one side of the engaging part so that the chinstrap follows both sides of the locking part, and an insertion hole for extracting the chinstrap from the engaging piece. extraction holes are provided in the one member at least on both sides of the end portion of the locking portion on the side remote from the engagement piece, so that the position of the chinstrap from the fastener when the chinstrap is tightened is Displacement can be reliably prevented, and the length of the chin strap can be easily adjusted.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a bicycle helmet, FIG. 2 is a partially cutaway front view seen from the direction of the arrow in FIG. 1, and FIG. 2 is a sectional view taken along the - line, FIG. 4 is a cutaway side view of the shell, FIG. 5 is a bottom view taken in the direction of the arrow in FIG. FIG. 7 is an enlarged sectional view taken along the - line in FIG. 1. 1... Cap body, 29, 30... Chin strap, 36... Fastener, 37... Insert member, 38... Receiving member, 39
...Engagement piece, 40...Insertion side winding hole, 41...Ejection side winding hole, 42...Wrap part, 43...Locking part, 44...Insertion hole, 45...Ejection hole .

Claims (1)

[Scope of utility model registration request] Both ends of a pair of chin straps 29 and 30, one end of which is connected to the cap body 1, are connected to a fastener 36 that can be freely fastened and released.
In the helmet, which is connected to two members 37 and 38 constituting the helmet, one of the chin straps 29 is wound around an engaging piece 39 that can be engaged with the one member 37 and is separated from the member 37. At the same time, both sides of the part wrapped around the engaging piece 39 are inserted into the one member 37, the other chin strap 30 is directly connected to the other member 38, and the engaging piece 39 has the chin strap 29 inserted into the one member 37.
The insertion side winding hole 40 on the side where the chin strap 29 is inserted and the extraction side winding hole 41 on the side where the chin strap 29 is pulled out are
Winding part 42 where the chin strap 29 should be wound between 0 and 41
, and the one member 37 has a hole formed therein.
A locking part 43 is provided which becomes narrower as it moves away from the engaging piece 39 and has a wider end on the engaging piece 39 side than the winding part 42.
9 along both sides of the locking part 43
Insertion hole 4 for inserting the chin strap 29 toward the 9 side
4 and an extraction hole 45 for extracting the chin strap 29 from the engagement piece 39 are provided in the one member 37 at least on both sides of the end of the locking part 43 on the side remote from the engagement piece 39. A helmet characterized by: