JP5989021B2 - Folding helmet - Google Patents

Description

  The present invention relates to a folding helmet that can be folded during normal times and can be quickly assembled and used in the event of an emergency such as an earthquake or when working, for example. This invention relates to a structure that can be reliably maintained.

Conventionally, a foldable hat or helmet that can be used in an emergency such as an earthquake or fire has been proposed.
Patent Document 1 includes a front flat plate that covers the frontal head that is continuous at the bent portion and a rear flat plate that covers the back of the head, and is flattened by being bent at the bent portion, thereby narrowing the bent portion from the left and right sides. Thus, a structure in which a hat shape is formed is disclosed.
Patent Document 2 discloses a folding hat in which a front flat plate, a rear flat plate, and a part of the periphery of both are connected by a connecting portion, and the shape of the hat is obtained by bringing the side portions close to each other. The structure which performs the string for making the side part approach by lever operation is disclosed.

The present inventors divided a substantially hemispherical cap body into two hemicap bodies along a center line passing through the center of the top of the head as a folding helmet that realizes a shape and strength as a helmet more, The half-cap body is divided into a central shell occupying a certain range above the opening edge of the lower end and a plurality of peripheral shells adjacent to the central shell, and the central shell and the peripheral shell are continuously connected by a pivotable hinge structure. Peripheral shells and peripheral shells in one half-cap body are separated and can be brought into contact with each other, and the corresponding peripheral shells and peripheral shells of the two half-cap bodies located on the outer periphery are connected by a pivotable hinge structure. Invented a folding helmet. (Patent Document 3)
This helmet can be kept in use by pulling the connecting portion between the peripheral shell and the peripheral shell located at the front and the connecting portion between the peripheral shell and the peripheral shell located at the rear with an operating string.

JP 2007-162179 A JP 2010-59593 A JP 2013-170324 A

When the invention described in Patent Document 1 is used as a hat, it is necessary to compress the rear and front flat plates with a strong force against elasticity, and the operation of assembling as a hat (helmet) is not always easy. . In particular, weak people such as women and children have the disadvantage of being difficult to assemble. Moreover, the strength as a helmet depends on the strength of the rear and front flat plates that the user curves during assembly, and it is difficult to provide sufficient strength. That is, in order to improve the strength of the rear and front flat plates covering the head, it is necessary to increase the plate thickness of the flat plate, for example. If the plate thickness is increased, the elastic deformation of the assembly operation becomes difficult.
In the invention described in Patent Document 2, when assembling the invention described in Patent Document 1, the rear and front flat plates can be shrunk against elasticity by lever operation, but the shape in use However, it is unnatural as a helmet, and it is difficult to provide sufficient strength.

The folding helmet according to the previous application of the present applicant has a natural helmet shape and can realize sufficient strength as a helmet. However, the operation cord (clamping cord) having the structure described in the specification of the previous application is pulled out of the operation cord to bring the helmet into use, and the connecting portion between the peripheral shell and the peripheral shell is drawn to form a cap shape. It has a helmet shape. Further, as a structure for maintaining the helmet shape in use, a lock means is provided so that the pulled-out operating string is not pulled back.
In order to maintain the use state as a hat (helmet), the invention described in the cited document 2 maintains the state in which the string is pulled by the lever in order to make the flat plate contracted against elasticity. It is configured to do.

In the folding helmet according to the above-mentioned previous application of the present applicant, since the operation string (tightening string) pulled out to maintain the use state remains hanging on the back of the head, when used as a helmet, The hanging string could get in the way. Further, if the lock means of the operation string is loosened during use, it may be difficult to maintain a sturdy helmet shape.
In addition, the operation of the operation cord for using the helmet is not always easy, and the operation cord pulled out for use is deficient in that it hangs down. The present invention aims to eliminate the disadvantages of the previous application by the applicant.

  The folding helmet according to the present invention that achieves the above-mentioned object is obtained by dividing a substantially hemispherical cap body 1 into two half-cap bodies 2 and 3 along a center line passing through the center of the top of the head. The cap body is divided into a central shell 2a, 3a occupying a certain range above the opening edge at the lower end at opposite positions, and a plurality of peripheral shells 2b-2d, 3b-3d adjacent to the central shell 2a, 3a. The peripheral shell is made continuous with a pivotable hinge structure. The peripheral shell and the peripheral shell in one half-cap body are separated and brought into contact with each other. It connects with 4-6.

In the first aspect of the present invention, the engaging means is provided between the adjacent connecting portions, and the cap body 1 is pressed to force the connecting portion at the front position and the connecting portion at the rear position to approach each other. The connecting portion is maintained in use by engaging the adjacent connecting portion with the connecting portion, and the connecting portion and the connecting portion are released by releasing the engagement between the connecting portion and the connecting portion and pressing the cap body from the side of the connecting portion. This is a folding helmet that can be folded flat by releasing.
The structure of the connecting portion is such that the connecting pieces 4a to 5a and the connecting pieces 4b to 5b formed by connecting the peripheral shells 2b to 2d and 3b to 3d of the two half cap bodies 2 and 3 continuously by the thin-walled portion are fitted. At the same time, the upper part of the connecting piece and the fitting part of the connecting piece are covered with connecting part covers 4g to 6g that are fixed to the connecting piece, and the engaging part 10 that engages the connecting claw 7 and the connecting claw 7 is formed on the connecting part cover. To do.

  In the invention according to claim 2, the connecting claws 7, 7 are respectively arranged at the front end and the rear end of the connecting portion 4 located at the center, and the connecting claws 7 provided at the front end of the connecting portion 4 located at the center are provided. The folding helmet according to claim 1, wherein a connecting claw 7 provided at a rear end of the connecting portion 4 positioned at the center is engaged with a connecting portion 6 positioned rearward of the connecting portion 5 positioned at the front.

According to the third aspect of the present invention, the connecting claws 7, 7 arranged at the front end and the rear end of the connecting portion 4 located in the center form the engaging portion 8 at the tip and the connecting portion 4 positioned at the center. The engaging portion 8 at the front end is urged downward by a spring 9, and the connecting claw is fixed at the rear end portion fixed position of the front connecting portion 5 and the front end portion fixed position of the rear connecting portion 6. An engaging portion 10 is formed to which the seven locking portions 8 are engaged.
The front end surface 7a of the connecting claw 7 is a folding helmet according to claim 2, wherein the engaging portion 8 is formed on an inclined surface that is guided to the engaging portion 10 over a part of the connecting portion.

  The invention according to claim 4 is the fixed one of the front end and the rear end of the connecting portion 4 located at the center, and the rear end of the connecting portion 5 located at the front and the front end of the connecting portion 6 located at the rear. The folding helmet according to any one of claims 1 to 3, wherein a positioning projection 11 is formed at a position, and a fitting portion into which the positioning projection is fitted at one of the other fixed positions is formed.

Invention 請 Motomeko 5 wherein the one of the connection portion 4-6 of the multiple is made continuous by the thin-walled portion formed as a connecting piece 6a of the integrated around the shell of the two half-cap body, the integral The connecting part cover 6g is fixed above the connecting piece 6a formed in the above.

According to the first aspect of the present invention, the cap body 1 is pressed to force the connecting portion at the front position and the connecting portion at the rear position to approach each other, thereby engaging the adjacent connecting portions with the connecting portions, and It is possible to easily change the helmet folded into the shape of the helmet in use. And a helmet shape can be maintained reliably by engagement of a connection part, and it can be used safely as a helmet.
And it can fold to a flat state easily by canceling | releasing engagement of a connection part and a connection part, and pressing a cap body from the side of a connection part.

  According to the second aspect of the present invention, the connecting claws 7 and 7 are arranged at the front end and the rear end of the connecting portion 4 located at the center, respectively, and the connecting claws are positioned behind the connecting portion 5 located at the front. Since it is engaged with the connecting portion 6, it is connected in a well-balanced manner, and when the cap body 1 is pressed to engage the connecting claw 7, there is an effect that it can be reliably engaged by operating symmetrically. .

  According to the third aspect of the present invention, when the folded helmet is put into use, when the connecting portion and the connecting portion are brought close to each other by pressing the cap body, the connecting portion where the front end face 7a of the connecting claw 7 is opposed. When the contact portion is further pressed, the connecting claw is lifted against the force of the spring 9 to overcome a part of the connecting portion, and the engaging portion 10 of the engaging claw 7 automatically engages the engaging portion 10 of the opposing connecting portion. Can be easily and reliably assembled in use. Moreover, the helmet which was made into a use state can maintain the engagement state of the connection nail | claw 7 reliably with the force of the spring 9, and can wear the assembled helmet in comfort.

According to the fourth aspect of the present invention, the shape of the helmet in use is securely held, and the connecting portion covers 4g to 6g function as reinforcing parts, and have an effect of improving the strength as a helmet.
According to the invention of claim 5, wherein molding the semi-cap body 2 and the left half cap body 3 on the right side together, there is an effect that can be efficiently manufactured.

FIG. 1 is a rear perspective view of the entire helmet body of the folding helmet according to the present invention, FIG. 2 is a plan view of the entire cap body, FIG. 3 is a front view of the entire cap body, FIG. 4 is a rear view of the entire cap body, FIG. 5 is a bottom view of the entire cap body, 6 is a cross-sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a front view of the entire folded cap body, FIG. 9 is a rear view of the entire folded cap body, FIG. 10 is a plan view of the entire folded cap body, FIG. 11 is a bottom view of the entire folded cap body; 12 is a cross-sectional view taken along line XII-XII in FIG. FIG. 13 is an enlarged cross-sectional view showing a connecting process of the connecting portion, 14 is a partially enlarged view of a cross section along line XIV-XIV in FIG. FIG. 15 is a perspective view of the right half-cap body viewed from the inside, FIG. 16 is a perspective view of the left half cap viewed from the inside, FIG. 17 is a rear view of the cap body as viewed from the direction of the connecting claws. 18A and 18B are diagrams showing only the connecting claws, where FIG. 18A is a perspective view and FIG. 18B is a longitudinal sectional view.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a folding helmet according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a rear perspective view of the entire helmet body, and FIG. 2 is a plan view.
The folding helmet of the illustrated embodiment is formed entirely of, for example, a synthetic resin material, and includes a substantially hemispherical cap body 1 having two half cap bodies along a center line in the front-rear direction passing through the center of the top of the head. That is, the right half cap body 2 and the left half cap body 3 are divided.

The right half-cap body 2 and the left half-cap body 3 each have a central shell 2a, 3a that occupies a certain range above the lower end opening edge at opposite positions, and a plurality of peripheral shells 2b- adjacent to the central shells 2a, 3a. Divide into 2d and peripheral shells 3b-3d.
The right half cap 2 and the left half cap 3 are symmetrical. As shown in FIG. 2, the right half-cap body 2 is substantially in the center and occupies a certain range upward from the edge of the lower end opening, and the central shell 2a of the right half-cap body is continuous above the central shell 2a. A peripheral shell 2b located in the center, a peripheral shell 2c continuous in front of the central shell 2a, and a peripheral shell 2d continuous in the rear of the central shell 2a. The central shell 2a of the right half cap 2 and the peripheral shells 2b, 2c, 2d are connected in a rotatable hinge structure. In addition, the boundaries between the peripheral shells 2b and 2c and the peripheral shells 2b and 2d are separated so that they can come into contact with each other.

The left half cap 3 is symmetrical with the right half cap 2. That is, the left half cap 3 has a central shell 3a, a peripheral shell 3b continuous above the central shell 3a, a peripheral shell 3c continuous in front of the central shell 3a, and a peripheral continuous in the rear of the central shell 3a. It is divided into shells 3d. The central shell 3a and the peripheral shell 3b, the central shell 3a and the peripheral shell 3c, and the central shell 3a and the peripheral shell 3d of the left half cap 3 are connected in a rotatable hinge structure, and the peripheral shell 3b, the peripheral shell 3c and the peripheral shell The boundary of the shell 3d is separated so as to be in contact.
The shape and size of the central shell 3a and the peripheral shells 3b, 3c, 3d of the left half-cap body 3 correspond to the central shell 2a and the peripheral shells 2b, 2c, 2d of the right half-cap body 2, respectively. . In addition, it is preferable that the contact state of the side edges of the peripheral shells 2b to 2d and 3b to 3d is a structure in which the contact state is naturally engaged or fitted at the contact position so that the contact state is stably maintained.

In the illustrated embodiment, as understood from FIGS. 6 and 12, the central shells 2a and 3a are formed in a trapezoidal shape, and the upper side excluding the lower end opening edge is divided into three straight sides, and each side of the central shell is formed. Peripheral shells are arranged on the outside. That is, the peripheral shell 2b at the center position, the peripheral shell 2c at the front position, and the peripheral shell 2d at the rear position are arranged around the central shell 2a of the right half cap body 2 and the left half cap body 3 Around the central shell 3a, a peripheral shell 3b at the central position, a peripheral shell 3c at the front position, and a peripheral shell 3d at the rear position are arranged. The shape of the central shell may be a shape other than the trapezoid, the number of upper sides of the central shell may be other than three sides, and the peripheral shells may be arranged outside each side.
Further, the size of the central shell can be made small, and the shape of the peripheral shell can be made close to a sector. However, considering the strength of the hinge structure and the curved state of one central shell and the peripheral shell, the size of the central shell is preferably balanced with the peripheral shell.

The hinge structure of the central shell and the peripheral shell may be, for example, a shaft support structure by separate parts, but in the folding helmet of the illustrated embodiment, the central shell 2a of the right half-cap body 2 and the left half-cap body 3 The outer periphery of the central shell 3a is linearly partitioned, and the thin shell structure is realized by connecting the central shells 2a and 3a and the peripheral shells 2b to 2d and 3b to 3d respectively at the straight portions in the thin portions 13 and 13. The whole is molded integrally.
In the illustrated embodiment, the central shell and the peripheral shell are made straight, but the central shell and the peripheral shell are partitioned in a curved shape, for example, and can be rotated continuously by hinge structures only at both ends of the curve. You can also

The corresponding peripheral shells and peripheral shells of the right half cap body 2 and the left half cap body 3, specifically, the peripheral shells 2b and 3b, 2c and 3c, 2d and 3d are connected to the connecting portions 4, 5 and 6, respectively. It is connected.
The corresponding peripheral shell-to-peripheral shell connecting portions 4, 5, 6 need only be in a rotatable state, and the outer peripheries of the peripheral shell can be connected to each other by, for example, a pin structure. In the illustrated embodiment, as shown in FIGS. 14 to 16, the connecting pieces 4a, which are fitted to the peripheral shells 2b, 2c of the right half-cap body and the peripheral shells 3b, 3c of the left half-cap body, 5a, 4b, and 5b are formed in a protruding manner, and are connected by fitting the connecting pieces 4a and 4b and 5a and 5b, respectively. The connecting pieces 4a, 5a are connected to the peripheral shells 2b, 2c and 3b, 3c by thin portions 4c, 5c which can be bent freely, and the connecting pieces 4b, 5b are connected by thin portions 4d, 5d, respectively.

As the fitting structure of the connecting pieces 4a and 5a and the connecting pieces 4b and 5b, the fitting pieces 4e and 5e are formed in one connecting piece 4a and 5a which is a plate having a constant thickness as shown in FIGS. The other connecting pieces 4b and 5b are formed with fitting projections 4f and 5f that fit into the fitting holes 4e and 5e.
That is, the connection parts 4 and 5 of the upper right peripheral shell 2b and the upper left peripheral shell 3b and the right front peripheral shell 2c and the left front peripheral shell 3c are continuous with the peripheral shells 2 and 3 by the thin-walled parts 4c, 5c and 4d, 5d. doing. The center peripheral shells 2b and 3b and the front peripheral shells 2c and 3c are firmly connected by fitting the fitting holes 4e and 5e of the connecting pieces 4a and 5a and the fitting protrusions 4f and 5f of the connecting pieces 4b and 5b. In this way, it can be connected freely.

The connecting portions 4, 5, and 6 of the peripheral shells 2b to 2d and the peripheral shells 3b to 3d are not necessarily configured to be connected in the above-described fitting state, and the peripheral shells of the right half cap body and the left half cap body are not necessarily connected. The peripheral shell may be integrally molded as long as it has at least a bendable thin portion.
In the helmet of the illustrated embodiment, the right rear peripheral shell 2d and the left rear peripheral shell 3d form a connecting portion 6 by being molded integrally with the connecting piece 6a. The integral connecting piece 6a is continuous with the peripheral shell 2d and the peripheral shell 3d by the thin portion 6c. (The connecting piece 6a in FIG. 15 and the connecting piece 6a in FIG. 16 represent the same thing.)

The connection between the peripheral shells 2b and 2c of the right half-cap body 2 and the peripheral shells 3b and 3c of the left half-cap body 3 does not have to be detachable, and the connection is firmly maintained. Is preferred. Therefore, for example, the fitting portion of the peripheral shells 2b, 2c of the right half-cap body and the peripheral shells 3b, 3c of the left half-cap body is in a fitting state in which the fitting hole 5d and the fitting protrusion 5e are forcibly fitted. Alternatively, it is preferable that they are integrated by welding or adhesion in a fitted state.
The above-mentioned peripheral shell and peripheral shell connecting portions 4, 5, and 6 are equipped with connecting portion covers 4g to 6g covering the upper part thereof. That is, the central connecting portion 4 is provided with a central connecting portion cover 4g, the front connecting portion 5 with a front connecting portion cover 5g, and the rear connecting portion 6 with a rear connecting portion cover 6g. .

The structure of the connecting portion that may be exposed on the upper surface of the cap body 1 is covered with the connecting portion cover by disposing the connecting portion covers 4g, 5g, and 6g above the connecting portions 4 to 5, respectively. it can. Further, the connecting portion covers 4g, 5g, and 6g can improve the appearance of the cap body, and can improve the strength of the connecting portion 5, in other words, the strength of the entire cap body. That is, the connecting portion cover disposed above the connecting pieces 4a to 6a (4b, 5b) is connected to the connecting pieces 4a, 4b connected by the fixing member 14 as understood from FIG. 4g is fixed. Similarly, the connecting portion cover 5g is fixed to the connected connecting pieces 5a and 5b by the fixing member 14, and the connecting portion cover 6g is fixed to the connecting piece 6a by the fixing member 14.
In the present invention, the connecting portions 4, 5, 6 are not only the portions where the connecting pieces 4a, 4b, 5a, 5b of the left and right half cap bodies 2, 3 are directly connected, but also the connecting portion covers 4g-6g. The whole connected part is included.

  In the peripheral shells 2b and 3b, 2c and 3c, and 2d and 3d connecting portions 4, 5, and 6 of the half cap bodies 2 and 3, engaging means for connecting the connecting portions to each other are provided. The engaging means may be provided at any part of the connecting portions 4 to 6 as long as it can engage with each other and maintain the connected state. In this embodiment, the connecting portion cover 4g is used. The engaging means are formed so that ˜6 g can be engaged with each other.

  Specifically, the connecting claws 7 and 7 are arranged at the front end and the rear end of the connecting portion cover 4g in the connecting portion 4 of the peripheral shells 2b and 3b located at the center, and the connecting claws 7 provided at the front end are arranged. The engaging claw 7 provided at the rear end of the connecting part cover 4g is formed on the connecting part cover 6g of the connecting part 6 located rearward in the engaging part 10 formed in the connecting part cover 5g of the connecting part 5 located in the front. By engaging with the engaged portion 10, the connecting portions 4 to 6 are connected in series.

  As can be understood from FIG. 13, the connecting claw 7 arranged at the front end and the rear end of the connecting portion 4 (connecting portion cover 4g) located at the center forms a locking portion 8 at the tip, and the base end at the center. The connecting portion cover 4g is pivotally supported, and a spring 9 biases the locking portion 8 at the tip downward. On the other hand, at the rear end portion fixed position of the connecting portion cover 5g of the front connecting portion 5 and the front end portion fixed position of the rear connecting portion 6, an engaging portion 10 to which the engaging portion 8 of the connecting claw 7 is engaged is formed. doing. Further, the front end surface 7a of the connecting claw 7 is formed in an inclined surface in which the engaging portion gets over the part of the connecting portion and is guided to the engaging portion, that is, a downwardly inclined surface.

With the structure described above, the helmet according to the illustrated embodiment can be easily assembled into a use state.
That is, in the folded state of the helmet shown in FIG. 8 to FIG. 12, the half cap bodies 2 and 3 are both flat and flat as shown in FIG. . When this helmet is pressed in the front-rear direction, that is, with the connecting part 5 and the connecting part 6 sandwiched between both hands, the peripheral shells 2b, 2c, 2d and 3b, 3c, 3d of the half cap bodies 2, 3 are forcibly approached. . At this time, the central shells 2a, 3a and the peripheral shells 2b, 2c, 2d and 3b, 3c, 3d of the half-cap bodies 2, 3 gradually change into cap shapes while being bent at the thin-walled portions 13, 13. .

  As shown in FIG. 13 (a), in the folded state, the connecting portions 4 and 5 are in a separated position. When the both ends of the connecting portions 4, 5, 6 are pressed with both hands, the front end surface 7a of the connecting claw 7 is moved to the front connecting portion cover when the connecting portions 4, 5, 4, 6 approach as shown by arrows. Abutting on the rear end portion 5h of 5g, the connecting claw 7 is lifted along the inclined surface of the front end surface 7a. Then, the distal end of the engaging portion 8 of the connecting claw 7 moves along the upper surface 5i of the connecting portion cover 5g, and the engaging portion 10 disposed at a predetermined position is engaged with the click as shown in FIG. 13 (b). Match. In a state where the connecting claw 7 is engaged with the engaging portion 10, the connected state of the connecting claw 7 is maintained by the elasticity of the spring 9 and can be worn with confidence as a helmet.

  When the helmet in use is folded, as shown in FIG. 13 (c), the coupling claws 7 are raised by fingers against the elasticity of the spring 9 to disengage the cap body 1 from the left and right (the side of the coupling portion). )). When the cap body 1 is pressed from the left and right, the helmet can be flattened and moved to a position where the connecting portions 4, 5, 6 are separated as shown in FIG. 13 (a). In the folded state, as shown in FIG. 11, the folded state can be maintained by detachably hanging the lock claw 15 on the opening edge of the folded helmet, specifically the lower ends of the central shells 2a and 3a. it can.

  As shown in FIG. 18, the connecting claw 7 disposed at the front end and the rear end of the center connecting portion cover 4g is formed of a synthetic resin by forming a support shaft 16 at the base end portion and a locking portion 8 at the tip end. It is integrally formed of materials. That is, the locking portion 8 is formed at the front end portion of the flat finger-hanging portion 17, and the front surface thereof is the front end surface 7a. The support shaft 16 protruded to the side of the base end portion is inserted into a recess 18 formed on the surface of the connecting portion cover 4g located at the center to form a bearing portion.

  Positioning projections 11 projecting forward and rearward are formed below the coupling claws 7 at both front and rear ends of the coupling portion cover 4g located in the center. Further, a fitting portion into which the positioning projection is fitted is provided on the rear end surface of the connecting portion cover 5g facing the positioning projection 11 and the front end surface of 6g. That is, the positioning protrusion 11 is a substantially rectangular protrusion, the fitting portion 12 is a square hole into which the positioning protrusion is inserted, and when the connecting portion covers 4g and 5g and 4g and 6g come close, they are naturally inserted and fitted. The shape to be.

  In this case, the connecting portion covers 4g, 5g, and 6g are engaged at the upper and lower portions of the connecting claw 7, the engaging hole 10, the positioning projection 11 and the fitting portion. It will be lost and firmly connected. Therefore, it is desirable that the positioning protrusion 11 and the fitting portion have a shape that is naturally guided and fitted, and fits without rattling.

  The outer surface of the cap body 1 may be formed as a complete spherical surface, that is, a curved surface, but does not necessarily have to be a strictly spherical surface. The cap body 1 of the illustrated embodiment forms the surfaces of the central shells 2a and 3a and the peripheral shells 2b to 2d and 3b to 3d constituting the half cap bodies 2 and 3 in a plane. When the surfaces of the central shells 2a and 3a and the peripheral shells 2b to 2d and 3b to 3d are flat, the surface of the cap body is constituted by a polyhedron. That is, the hemispherical cap body in the present invention means not only a strict spherical surface but also a broad spherical surface including a polyhedron as in the illustrated example.

  The folded thickness T of the helmet in the folded state shown in FIGS. 8 to 11 is the circumscribed dimension of the opposing central shell (2a and 3a) and peripheral shell (2b and 3b, 2c and 3c, 2d and 3d). . Therefore, when the outer surfaces of the central shells 2a and 3a and the peripheral shells 2b to 2d and 3b to 3d are not spherical shells and are formed flat as in the illustrated embodiment, the thickness T in the folded state is made as small as possible. can do. When the thickness T in the folded state is reduced, for example, when stacked and stored, or when stored side by side on a shelf, there is an effect that it can be efficiently stored without taking up as much space as possible.

  Helmets are usually equipped with interior parts for wearing called chin straps and hammocks. In the figure, reference numeral 19 denotes interior part mounting rods, which are arranged at the front, rear, left and right four places of the cap body as shown in FIGS.

DESCRIPTION OF SYMBOLS 1 ... Hat body, 2, 3 ... Half cap body, 2a, 3a ... Central shell, 2b-2d, 3b-3d ... Peripheral shell, 4, 5, 6 ... Connection part, 4a-6a ... Connection part, 4b, 5b ... Connecting piece, 5c, 6c ... Thin part, 4d, 5d ... Thin part, 4e, 5e ... Fitting hole, 4f, 5f ... Fitting projection, 4g-6g ... Connecting part cover, 5h, 6h ... Rear end part, 5i ... upper surface, 7 ... coupling claw, 8 ... locking part, 9 ... spring, 10 ... engaging part, 11 ... positioning projection, 12 ... fitting part, 13 ... thin part, 14 ... fixing member, 15 ... locking claw , 16: Support shaft, 17: Finger hook, 18: Recess, 19 ... Interior part mounting rod.

Claims (5)

The substantially hemispherical cap body is divided into two half-cap bodies along a center line passing through the center of the top of the head, and the two half-cap bodies occupy a certain range above the lower end opening edge at opposite positions, respectively. The central shell is divided into a plurality of peripheral shells adjacent to the central shell. The central shell and the peripheral shell are connected by a rotatable hinge structure, and the peripheral shell and the peripheral shell in one half-cap body are separated and contacted. In the folding helmet in which the peripheral shell and the peripheral shell at the corresponding positions of the two half-cap bodies are connected by a connecting portion having a rotatable hinge structure,
The connecting part fits the connecting piece and the connecting piece formed continuously by the thin part on the peripheral shell of the two half-cap bodies, and fixes the connecting piece and the upper part of the connecting piece to the connecting piece. Cover the connecting portion cover, forming a connecting claw and an engaging portion engaging with the connecting claw on the connecting portion cover, and pressing the cap body to force the connecting portion at the front position and the connecting portion at the rear position. Maintaining the use state by engaging the adjacent connecting portion and the connecting portion close to each other, releasing the engagement between the connecting portion and the connecting portion and pressing the cap body from the side of the connecting portion, A folding helmet characterized by having a flat folded state by releasing the connecting portion.   The connecting claw is disposed at the front end and the rear end of the connecting portion located at the center, and the connecting claw provided at the front end of the connecting portion located at the center is connected to the connecting portion located at the front. The folding helmet according to claim 1, wherein a connecting claw provided at a rear end of the folding helmet is engaged with a connecting portion located rearward.   The connecting claws arranged at the front end and the rear end of the connecting portion located in the center form a locking portion at the tip, and the base end is pivotally supported by the connecting portion located at the center, and the tip locking portion is lowered by a spring. And an engaging portion that engages with a locking portion of the connecting claw at the rear end portion fixed position of the front connecting portion and the front end portion fixed position of the rear connecting portion is formed. The folding helmet according to claim 2, wherein the front end surface is formed as an inclined surface in which the engaging portion gets over the part of the connecting portion and is guided to the engaging portion. The positioning protrusions are fixed at either one of the front end and the rear end of the connecting portion located in the center and the rear end and the front end of the connecting portion located at the rear. The folding helmet according to any one of claims 1 to 3, wherein a fitting portion into which the positioning protrusion is fitted is formed at a position . One of the plurality of connecting portions is formed as an integral connecting piece that is continuous with the peripheral shell of the two half-cap bodies by a thin-walled portion, and a connecting portion cover is fixed above the integrally formed connecting piece. The folding helmet according to claim 4 .

Images