JP6204768B2 - helmet - Google Patents

Description

  The present invention relates to a helmet provided with an adjustment mechanism that adjusts a headband in a cap body in accordance with the outer circumference of a human head.

  The headband of the helmet plays a role of attaching the helmet to the human head and fixing the helmet to the human head. The circumference of the headband can be adjusted to match the outer circumference of the human head.

  Conventionally, in this type of headband, the first end and the second end are overlapped on the rear head side, and the protrusion provided on the first end is disposed at a predetermined interval on the second end. Is known to selectively engage with a plurality of holes formed to maintain a circumferential length in accordance with the outer circumference of the human head (for example, see Patent Document 1 below).

  However, in this case, the operation of engaging the protrusion at the first end with the hole at the second end must be performed by hand on the back of the head. For this reason, the operation of adjusting the circumference of the headband is not only troublesome, but it is difficult to perform the adjustment operation quickly.

  Therefore, the applicant first provided an adjustment mechanism for adjusting the circumference of the headband on the occipital side of the headband, connected one end of the underarm string to the frontal side of the cap body, There has been proposed a helmet in which the ends are connected to the ends extending from the respective end portions of the headband so as to cross each other in the adjusting mechanism (see Patent Document 2 below).

  The adjustment mechanism is, for example, a ratchet mechanism, and maintains the state in which the circumferential length is shortened by locking the portions extending from both ends of the headband and intersecting with each other. The length can be increased.

  According to this, the circumference of the headband can be shortened by simply pulling the lower cord or the chin strap connected to the lower cord, and the headband can be quickly brought into close contact with the outer circumference of the human head. This operation can be performed very easily. Further, the helmet can be easily removed from the human head simply by releasing the locking of the both ends of the headband by the adjusting mechanism.

Japanese Utility Model Publication No. 7-43651 Japanese Patent No. 4542425 (FIG. 1)

  By the way, when wearing a helmet, not only the headband and the chin strap are pulled to make the headband in close contact with the human head, but also the length of the chin strap is adjusted so that it is in close contact with the wearer's chin. Eliminate slack in the lower ear and chin straps. Thereby, a helmet can be reliably fixed to a human head.

  However, when removing the helmet, even if the locking of the both ends of the headband by the adjustment mechanism is released while the lower ear strap and chin strap are not loose, There is an inconvenience that the tightening of the chin strap becomes excessive and the state where the headband is in close contact with the human head cannot be smoothly released.

  In view of the above points, the present invention is not only easy to adjust the circumference of the headband to be in close contact with the human head, but can also smoothly release the state in which the headband is in close contact with the human head. The purpose is to provide.

  In order to achieve such an object, the present invention provides a hard cap body, a headband attached to the cap body to surround the human head, and a circumference of the headband provided on the back head side of the headband. An adjustment mechanism that adjusts the wearer's ears, a pair of underarm strings supported at both ends on the cap body side, a chin string that connects each end to the pair of underarm strings, and the headband A base end portion is connected to each of both end portions located on the rear head side, and includes a pair of adjustment bands that cross each other and extend obliquely downward in the adjustment mechanism, and in a direction in which the front ends of the adjustment bands are separated from each other In a helmet in which the circumference of the headband is adjusted to the outer circumference of the human head by pulling, the circumference of the headband is maintained releasably by the adjustment mechanism. Via the connection provided in Connected to the respective bracelet, and the connecting portion of each adjustment band includes an insertion portion through which the parotid string is inserted, and is movable along the parotid string inserted through the insertion portion. It is characterized by.

  According to the present invention, a connection portion is provided at the tip of each adjustment band, and the parotid string is inserted through the insertion portion of the connection portion so that the connection portion is movable along the parotid string. In this way, the adjustment band can be moved along the lower string independently of the lower string while the adjustment band and the lower string are connected. Thereby, when shortening the circumference of the headband to match the outer circumference of the human head, the length of the parotid string does not change even if the leading ends of both adjustment bands are pulled, Even if the circumference of the headband is extended by releasing the maintenance of the circumference of the headband by the adjusting mechanism, the tightening degree of the chin strap connected to the parotid string does not change. Therefore, not only is the operation of adjusting the circumference of the headband so as to be in close contact with the human head, but also the state in which the headband is in close contact with the human head can be smoothly released.

  In the present invention, it is preferable that the connection portion has a finger hooking portion that can be hooked when the adjustment band is pulled. According to this, the adjustment band can be easily pulled by placing a finger on the finger hook portion of the connection portion, and the operability when adjusting the circumference of the headband can be improved.

Explanatory drawing at the time of wearing the helmet by embodiment of this invention. (A) is a top view of a connection member, (b) is a bottom view of a connection member. Explanatory side view which shows the connection member connected to the parotid string. FIG. 6 is an explanatory perspective view showing the adjusting mechanism with a part thereof broken.

  An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a helmet 1 includes a cap body 2 made of a hard material such as metal or plastics, and a headband 3 provided inside the cap body 2 and surrounding the periphery of the human head. Yes.

  Further, the helmet 1 circulates under the ears of the wearer Z, a pair of left and right ear cords 4 whose both ends are fixedly supported on the inner surface of the cap body 2, and a chin whose ends are connected to both ear cords 4. A string 5 is provided. Although not shown, a hammock that contacts the human head is further provided inside the cap body 2.

  Both ends of the headband 3 are located on the back of the head. A base end portion of the adjustment band 7 is connected to each of both end portions of the headband 3. Each adjustment band 7 is connected to the parotid string 4 on each side via a connection member 8 (connection portion). The connection member 8 is connected to a connection band 9 provided at the tip of each adjustment band 7.

  As shown in FIG. 2A, the connecting member 8 includes a connecting hole 10 that connects the connecting band 9 and a finger hooking convex portion 11 (finger hooking portion). Moreover, as shown in FIG.2 (b), the penetration part 12 which consists of a pair of embrace pieces 12a and 12b is provided.

  The parietal string 4 is inserted into the insertion part 12. The parietal string 4 can be attached to and detached from the connection member 8 through a gap formed between the holding pieces 12a and 12b. As shown in FIG. 3, the connection member 8 in a state in which the parotid string 4 is inserted through the insertion portion 12 is movable along the longitudinal direction of the parotid string 4. At this time, a finger can be put on the finger hooking convex portion 11 of the connecting member 8 to pull the connecting member 8 along the parietal string 4, and the adjustment band 7 can be easily pulled.

  An adjustment mechanism 13 that adjusts the length of the headband 3 is provided on the rear head side of the cap body 2. Here, the adjustment mechanism 13 employed in the present embodiment will be described.

  As shown in FIG. 4, the adjustment mechanism 13 includes a cover 14, a synchronous gear 15 provided inside the cover 14, a ratchet gear 16 that rotates coaxially with the synchronous gear 15, and teeth of the ratchet gear 16. A claw member 17 to be engaged and a release button 18 for separating the claw member 17 from the ratchet gear 16 are provided. In FIG. 4, a part of the cover 14 is broken to show the inside. The ratchet gear 16 is circular and is supported by the rotating shaft 19 of the synchronous gear 15. In FIG. 4, for convenience of explanation, a part of the ratchet gear 16 is cut away to show the synchronous gear 15.

  A pair of adjustment bands 7 extending from both ends of the headband 3 are overlapped at a predetermined angle in the cover 14 of the adjustment mechanism 13 and intersect at a predetermined angle. A slot 20 having a predetermined length is formed in a portion including the crossing position of each adjustment band 7, and serrated teeth 21 are formed on one inner edge in the longitudinal direction of the slot 20.

  The synchronous gear 15 meshes with the serrated teeth 21 of the adjustment band 7. Thereby, with the rotation of the synchronous gear 15, each adjustment band 7 moves the same distance in the opposite direction along the length direction.

  The claw member 17 is provided so as to be swingable in an approaching direction and a separating direction with respect to the ratchet gear 16 and elastically engages with the teeth of the ratchet gear 16 by a spring (not shown). At this time, the claw member 17 restricts the rotation of the ratchet gear 16 only in one direction.

  The release button 18 is configured to swing the claw member 17 in a direction away from the ratchet gear 16 by the pressing operation. Accordingly, by pressing the release button 18, the restriction of the ratchet gear 16 by the claw member 17 is released, and the adjustment band 7 can be moved in any direction in the longitudinal direction.

  1 and 4, when the helmet 1 is worn, first, the release button 18 is pressed to move the claw member 17 away from the ratchet gear 16, and the adjustment mechanism 13 is moved backward while the release button 18 is pressed. Pull on. As a result, both the synchronous gear 15 and the ratchet gear 16 rotate counterclockwise, and the circumference of the headband 3 becomes longer due to the movement of both adjustment bands 7.

  When the release button 18 is released in this state, the claw member 17 engages with the teeth of the ratchet gear 16, and the ratchet gear 16 and the synchronous gear 15 are prevented from rotating counterclockwise and are unidirectional (headband 3 It is possible to rotate only in the direction in which the perimeter of the lens becomes shorter.

  Subsequently, the helmet 1 is put on the head in a state where the circumference of the headband 3 is lengthened, and both connection members 8 provided at the front ends of both adjustment bands 7 are pulled down obliquely downward. As a result, both the synchronous gear 15 and the ratchet gear 16 rotate in the clockwise direction, and each of the connecting members 8 moves along the parietal string 4. At the same time, the circumference of the headband 3 is shortened and the head of the wearer Z is tightened. When the tightening operation of both connecting members 8 is stopped when the headband 3 is just tightened, the engagement between the claw member 17 and the teeth of the ratchet gear 16 is maintained at that position, and the headband 3 The perimeter is fixed. Thereafter, the length of the chin strap 5 is adjusted to remove the slack, and the chin strap 5 is brought into close contact with the wearer Z under the chin.

  In this way, the circumferential length of the headband 3 can be easily adjusted by simply pulling both the connecting members 8, and the helmet 1 can be worn quickly.

  When removing the helmet 1, first, the release button 18 is pressed to move the claw member 17 away from the ratchet gear 16, and the adjustment mechanism 13 is pulled backward while the release button 18 is being pressed. As a result, the synchronous gear 15 and the ratchet gear 16 rotate counterclockwise, and the circumference of the headband 3 becomes longer due to the movement of both adjustment bands 7.

  Then, both adjustment bands 7 move in the direction toward the headband 3 side, and both connection members 8 also move. At this time, since both the connecting members 8 are movably connected along the parotid string 4, pulling of the parotid string 4 and the chin strap 5 due to the movement of the both connecting members 8 does not occur. Thereby, the tightening of the head of the wearer Z by the headband 3 is loosened without the chin string 5 excessively tightening the lower jaw of the wearer Z. Thereafter, the chin strap 5 can be removed from the chin and the helmet 1 can be removed.

  DESCRIPTION OF SYMBOLS 1 ... Helmet, 2 ... Cap body, 3 ... Headband, 4 ... Ear bracelet, 5 ... Jaw strap, 7 ... Adjustment band, 8 ... Connection member (connection part), 11 ... Finger hook convex part (finger hook part), 12 ... insertion part, 13 ... adjustment mechanism.

Claims (2)

A hard cap body, a headband attached to the cap body to surround the human head, an adjustment mechanism provided on the back head side of the headband for adjusting the circumference of the headband, and a wearer's ear A pair of underarm strings supported at both ends on the cap body side, a chin string having respective ends connected to the pair of underarm strings, and both ends positioned on the occipital side of the headband. A pair of adjustment bands that are connected to each other and extend obliquely downward in the adjustment mechanism, and the circumference of the headband is adjusted by pulling the front ends of the adjustment bands in a direction away from each other. In a helmet in which the circumference of the headband is releasably maintained by the adjustment mechanism when matched to the outer circumference of the human head,
Each adjustment band is connected to the respective bracelet via a connection provided at its tip,
The said connection part of each adjustment belt | band | zone is provided with the insertion part which penetrates the said parotid string, It is movable along the said parotid string penetrated to this insertion part, The helmet characterized by the above-mentioned.   The helmet according to claim 1, wherein the connection portion has a finger hook portion that can be hooked when the adjustment band is pulled.

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