JP7640102B2 - Helmet with equipment attachment device - Google Patents

Description

The present invention relates to a helmet having an equipment mounting device that can easily mount and support electronic and electrical equipment such as lighting equipment, cameras, and communication devices, and that can also securely hold the equipment in place without it easily falling off even when the head moves with the body.

Traditionally, when carrying out various tasks at construction sites, disaster sites, and other locations, it has been mandatory to wear helmets or other protective gear to protect the body, particularly the head. In addition, when used at night or in dark places, for example, lighting devices are often attached to helmets to illuminate the area ahead and improve work efficiency.

To attach lighting or other devices to a helmet, for example, a flashlight attachment band as shown in Patent Document 1 and a helmet capable of attaching an auxiliary device as shown in Patent Document 2 have been proposed. The band in Patent Document 1 is a band that surrounds the helmet's outer periphery and has an appropriate number of fastening holes for removably attaching a flashlight. The helmet in Patent Document 2 is configured by fitting an upper hook mold attached to the string of the light into a lower hook mold provided on the helmet body.

Japanese Utility Model Application Publication No. 7-33944 Utility Model Registration No. 3113718

However, the band proposed in Patent Document 1 only surrounds the outer periphery of the helmet, so if it slips around the outer periphery of the helmet and slips toward the narrower top, it may fall off the helmet. For this reason, it is necessary to prepare a separate fastener to secure the band itself around the lower part of the helmet. Also, with the helmet in Patent Document 2, even if a through hole is provided in the helmet body to insert a mounting screw to secure the lower hook mold to the helmet itself, it is extremely difficult to drill a through hole in the helmet body, which is made of a robust material. Not only that, but it is also necessary to attach the upper hook mold to the string of the light, and this processing process itself is troublesome.

The present invention was created in consideration of the various circumstances that have existed in the past as described above, and its object is to provide a helmet equipped with an instrument mounting device that allows various instruments to be attached to the helmet simply and reliably, and allows the various instruments to be used stably and safely while wearing the helmet.

In order to solve the above-mentioned problems, the present invention comprises a helmet main body 1 and an instrument mounting device for mounting and supporting instruments 10 on the helmet main body 1, the helmet main body 1 having hole-shaped locking holes 2 formed on the upper and front surfaces of a stepped connecting seat 5 which bulges out along the left-right direction of the helmet main body 1, and the instrument mounting device has a clip piece 54 provided on a base member 51 which is connected to the instruments 10, and this clip piece 54 is forcibly inserted into the locking hole 2 on the upper surface of the connecting seat 5 against the elastic force of the clip piece 54 itself, and is equipped with a locking step 55 which locks onto the edge of the locking hole 2 on the front surface after insertion.
The helmet is characterized in that the helmet body 1 is provided with connecting parts (2, 6, 7) for elastically connecting fasteners (21, 41, 51, 61) connected to the equipment 10.
The engaging holes 2 which are the connecting parts can be configured as vertically long slits and arranged in pairs on the left and right sides of the helmet body 1 .
The connecting portion (2, 6, 7) can be configured to be disposed on at least one of the front side and the rear side of the helmet body 1.
The instrumentation 10 can be configured as a light, a camera, a communicator, or a power source.
The fastening device can be composed of a belt 15 that connects to the instrument 10, and a fastening stopper 21 that is connected to the belt 15 and resiliently engages with the connecting part (2).
The locking stopper 21 comprises a stopper body 22 having a belt connecting portion 23 at the rear for connecting the belt 15, and a pair of guide pieces 24 protruding from both sides at the front for guiding the insertion into the locking hole 2. Between these guide pieces 24, there is disposed a locking portion 26 which is slightly inclined with respect to the protruding direction of the guide pieces 24, swings by resilience, and resiliently locks onto the edge of the vertically elongated slit-shaped locking hole 2.
The engaging portion 26 becomes gradually thinner toward the tip, and has a hook step portion 27 on the inclined surface side that engages with the edge of the engaging hole 2, so that it can be configured to have a U-shaped outline when viewed from above.
When the locking stopper 21 itself is inserted into the locking hole 2, the guide piece 24 is inserted together with the locking portion 26 along the inner surface of the edge of the locking hole 2, and the spacing width between the outer edges of the pair of guide pieces 24 can be configured to approximately correspond to the height spacing in the locking hole 2.
The engaging holes 2 which are the connecting parts can be configured as slits on both the left and right sides of a support seat 4 which is formed as a bulge along the vertical direction on the helmet body 1 .
The locking device that locks into the locking holes 2 can be configured so that a hook 44 provided on one side of a base member 41 connected to the instrument 10 is inserted and locked into one of the locking holes 2, and a resilient clip portion 45 provided on the other side of the base member 41 is inserted and locked into the other locking hole 2.
The engaging hole 2, which is the connecting portion, can be configured as a slit on the upper surface and front surface of a stepped connecting seat 5 which is formed by bulging out along the left-right direction on the helmet body 1.
The locking device that locks into the locking hole 2 is configured so that a clip piece 54 provided on a base member 51 connected to the instrument 10 is inserted and locked into the locking hole 2 by elastic force, and the clip piece 54 can be forcibly inserted against the elastic force through the locking hole 2 on the upper surface of the connecting base 5, and is provided with a locking step portion 55 that locks into the edge of the locking hole 2 on the front surface.
The connecting portion can be constructed by providing a pair of locking hooks 7 on the inner edge sides of vertically elongated slit-shaped insertion holes 6 on the left and right sides of the helmet body 1 .
The fastening device that engages with the connecting portion (6, 7) can be configured by inserting a loop-shaped elastic string material 61 that is connected to the instrument 10 and elastically expands and contracts into the insertion hole 6 and engaging with the fastening hook 7.

In a helmet having the instrument mounting device of the present invention configured as described above, when various instruments 10 are attached and supported to the helmet main body 1, the locking stoppers 21 of the belts 15 connected to the instruments 10 are inserted into the left and right locking holes 2 in the helmet main body 1 against elastic force, so that after insertion, the instruments 10 are supported by the helmet main body 1.
For example, a lighting device (10) is placed and attached in the locking hole 2 on the front side of the helmet body 1, and for example, a storage battery (30) is placed and attached in the locking hole 2 on the rear side, and by combining in this manner, the ease of use of the integrated equipment 10 having the specified functions is improved.
The guide piece 24 of the locking stopper 21 smoothly guides the locking stopper 21 when it is inserted into the locking hole 2, and is inclined with respect to the guide piece 24, and a curved elastic action generated in the locking part 26 inserted together locks the hook step part 27 to the edge of the locking hole 2. This locked state allows the equipment 10 to be stably attached and supported at a predetermined part of the helmet body 1, unless the locked state is released.
In the locking stopper 21, the locking portion 26 formed at an incline with respect to the protruding direction of the guide piece 24 is formed to be thinner as it approaches the tip side, and has a hook step portion 27 on the inclined surface side, so that when inserted into the locking hole 2, the inclined surface side abuts against the edge of the locking hole 2 and generates a curved elastic force. When the hook step portion 27 reaches the edge of the locking hole 2 during insertion, this elastic force restores the hook step portion 27 to its original shape and locks onto the edge of the hole, thereby fixing the locking stopper 21 to the locking hole 2.
In addition, the resilient engagement of the hook step portion 27 with the engagement hole 2 can be released by pushing the engagement portion 26, which is in an engaged state, inside the helmet body 1, allowing the instrument 10 to be removed from the helmet body 1.
The support seat 4 formed as a bulge on the helmet main body 1 has hooks 44 of a base member 41 connecting the equipment 10 inserted into one of the locking holes 2 on both the left and right sides. With the hooks inserted and locked, the clip portion 45 is inserted and locked into the other locking hole 2 using its elasticity, allowing the specified equipment 10 to be attached to the helmet main body 1 via the base member 41.
In the locking hole 2 of the stepped connecting seat 5 formed as a bulge on the helmet main body 1, a clip piece 54 provided on the base member 51 is inserted from the locking hole 2 on the top surface, and the locking step 55 of the inserted clip piece 54 is engaged with the hole edge of the locking hole 2 on the front surface, thereby attaching the equipment 10 to the helmet main body 1 via the base member 51.
The connecting portion consisting of an insertion hole 6 and a locking hook 7 provided in the helmet main body 1 allows the equipment 10 to be attached to the helmet main body 1 by inserting a resiliently expandable elastic cord material 61 connected to the equipment 10 through the insertion hole 6 and locking it to the locking hook 7.

As the present invention is configured as described above, various types of equipment 10, such as lighting equipment, can be easily and reliably attached to the helmet body 1 by forcefully inserting them into the connecting parts (2, 6, 7) using the fasteners (21, 41, 51, 61), allowing the equipment 10 to be used stably and safely when the helmet is worn.

That is, in the present invention, the helmet body 1 is provided with connecting parts (2, 6, 7) that resiliently engage the fasteners (21, 41, 51, 61) that connect to the equipment 10, which allows the equipment 10 to be easily attached and detached by a one-touch insertion operation and by forcibly releasing the resiliently engaged fastener.

In addition, the locking holes 2 are arranged in pairs on the left and right sides of the helmet body 1, so that the equipment 10 can be stably attached and supported to the helmet body 1 by inserting and locking the locking stoppers 21 on each end of the belt 15, for example, connected to the equipment 10.

The locking stopper 21 is configured such that the locking portion 26 is arranged between the pair of guide pieces 24 protruding on both sides, at a slight incline with respect to the protruding direction of the guide pieces 24, and the gap between the outer edges of the guide pieces 24 roughly corresponds to the height gap in the locking hole 2. This means that when the guide pieces 24 are inserted into the locking hole 2, the locking portion 26 is also inserted at the same time. Since the locking portion 26 is inserted at an angle to the guide pieces 24 inserted into the locking hole 2, a resilient bending action is generated by the edge of the locking hole 2, and when the hook step portion 27 reaches the edge of the locking hole 2, the hook step portion 27, which returns to its original shape, locks onto the hole edge, and the locking stopper 21 can be firmly fixed to the locking hole 2.

Even if the locking part 26 inserted into the locking hole 2 protrudes slightly inside the helmet body 1, it does not come into direct contact with the head due to the cushioning material provided inside the helmet body 1. Also, by pressing the locking part 26 with, for example, a finger inside the helmet body 1, the locking state with the locking hole 2 can be released and the equipment 10 can be removed.

In addition, the support seat 4, which is formed by bulging out in the vertical direction on the helmet body 1, has locking holes 2 on both the left and right sides, so that the base member 41 that connects the equipment 10 can be inserted and locked from both the left and right sides of the support seat 4 using the hook 44 and the elastic clip portion 45 provided on this base member 41. Moreover, with the hook 44 inserted and locked into one of the locking holes 2, the elastic force of the clip portion 45 can be used to insert and lock into the other locking hole 2, allowing the equipment 10 to be securely attached to the helmet body 1.

The step-shaped connecting seat 5, which bulges out in the left-right direction of the helmet body 1, has locking holes 2 on the upper and front surfaces, and the base member 51 that connects the equipment 10 can be attached to the helmet body 1 by inserting the clip pieces 54 provided on this base member 51 into the locking holes 2 on the upper surface and locking the locking step 55 into the locking hole 2 on the front surface. Furthermore, this base member 51 has the advantage of being easily attached and detached, as it can be inserted and locked into the locking holes 2 by sliding it along the vertical direction of the helmet body 1.

By providing a pair of insertion holes 6 and locking hooks 7 on the helmet body 1, the equipment 10 can be attached to the helmet body 1 via the elastic cord material 61 by inserting a resiliently expanding and contracting elastic cord material 61, which is inserted and connected to the equipment 10, for example, inserted through the cord insertion hole 17, into the insertion hole 6 and locking it to the locking hook 7. Moreover, because the elastic cord material 61 is connected to the equipment 10 and locked with the locking hook 7 after being inserted through the insertion hole 6, not only is the structure simple but it can also be provided at low cost.

Although not shown in the figure, a hook that engages directly with a locking hole formed on the outer surface of the helmet body 1 by a resilient action can be provided on a base member that can connect and support the equipment 10, and it is also possible to attach the equipment 10 directly to the helmet body 1 by a hook formed on the equipment 10 itself.

The reference numerals in the Means for Solving the Problems and Effects of the Invention sections are used to facilitate reference to the components shown in the drawings. The present invention is not limited to the structure, shape, etc. shown by these descriptions and the reference numerals in the drawings.

1 is an exploded perspective view showing a first embodiment for carrying out the present invention; FIG. 13 is a perspective view showing the state in which the locking stopper is inserted into the vertically elongated slit-shaped locking hole in the helmet body. FIG. FIG. FIG. 13 is a side view of the same when attached in combination with a power supply device in a lighting device and in use. FIG. 11 is a perspective view of the main part when the power cable is supported on a rain gutter portion. FIG. 11 is a perspective view of a locking stopper according to the second embodiment. FIG. 11 is an exploded perspective view showing the third embodiment. FIG. FIG. 13 is an exploded perspective view showing the fourth embodiment. FIG. FIG. 13 is an exploded perspective view showing the fifth embodiment. FIG. FIG.

One embodiment of the present invention will be described below with reference to the drawings. In the first embodiment shown in Figs. 1 to 6, reference numeral 1 denotes a helmet body, and this helmet body 1 is provided with a cushioning device (not shown) along the inner circumferential side so that it can softly abut against the head surface when worn on the head, and is also provided with ventilation holes and other holes as necessary. Note that the helmet body 1 in the present invention is not limited to being made of a rigid material, and can be constructed and used in the same way as long as it can be worn on the head, so it includes helmets other than general helmets.

The helmet body 1 is provided with a pair of symmetrical slit-shaped locking holes 2, which are connecting parts for inserting and locking locking stoppers 21 of a belt 15, which is a locking device connected to the equipment 10 (described later), in order to securely hold equipment 10, such as a lighting device such as a light that is placed on the front of the helmet body 1.

The locking hole 2 shown in the figure is provided in a vertically elongated shape on the side portion on the front side of the helmet body 1. This locking hole 2 allows the locking stopper 21 to be forcibly inserted against the elastic force of the locking stopper 21, and after insertion, the locking stopper 21 is locked by its elastic action that restores its original shape.

The locking holes 2 are provided in the left and right areas of the front side of the helmet body 1, in recessed step surfaces 3 formed in the helmet body 1 along the up-down direction. This makes it easier to insert the locking stop 21 into the locking holes 2 in the step surface 3, which is a slightly flat surface, and to release them. The location of the locking holes 2 is not limited to the front side as shown in the figure, but may be on the left and right side parts of the helmet body 1.

When the equipment 10 is attached to the helmet body 1, it is desirable that the helmet body 1 portion and the locking hole 2 portion at the attachment position are flat surfaces, which helps to stabilize the support during attachment and the insertion and locking state.

On the other hand, in the fastening device, the belt 15 connected to the equipment 10 is formed to a predetermined width so as to be inserted into the belt insertion portion 11 provided in the form of a slit on the left and right sides of the back of the equipment 10, and has, for example, the distance and length between the left and right fastening holes 2 in the helmet main body 1 described above (see Figure 4). This belt 15 is made of, for example, transparent silicone resin, but it may also be made of cloth, and is not limited to these. Of course, if necessary, the belt 15 itself may be provided with a length adjustment means (not shown) so that it can be stretched and adjusted.

The belt 15 may also be connected to the left and right sides of the back of the instrument 10 as separate structures.

The locking stoppers 21 are connected to each end of the belt 15 inserted through the belt insertion section 11. The locking stoppers 21 are forcibly inserted into the locking holes 2 from the outside of the helmet body 1 by resisting their own elasticity, and after insertion, they are restored to their original shape by elasticity, so that they are locked to the edge of the locking holes 2 inside the helmet body 1. That is, as shown in the figure, the locking stoppers 21 are provided with a stopper body 22 having a belt connecting section 23 at the rear to connect the belt 15, and with paired guide pieces 24 protruding from both sides of the front to guide the insertion into the locking holes 2, and between these guide pieces 24 are arranged locking sections 26 that are slightly inclined with respect to the protruding direction of the guide pieces 24 and swing by elasticity.

When the locking stopper 21 itself is inserted into the locking hole 2, the guide pieces 24 are inserted together with the locking portion 26 along the inner surface of the edge of the locking hole 2, so that in the illustrated example, the spacing between the outer edges of the pair of guide pieces 24 roughly corresponds to the height spacing of the locking hole 2.

The engaging portion 26 is gradually thinner toward the tip, and has a hook step 27 on the inclined surface side, giving it a U-shaped external shape when viewed from above. As shown in FIG. 3, when inserted into the engaging hole 2 of the helmet body 1, the inclined surface side of the engaging portion 26 abuts against the inside surface of the engaging hole 2 and recoils to the opposite side of the inclined surface side in a curved manner. However, after continued insertion, when the hook step 27 reaches the edge of the engaging hole 2 inside the helmet body 1, the engaging portion 26 returns to its original position due to the resilience, and the hook step 27 engages with the edge of the engaging hole 2.

The engagement of the locking portion 26 with the locking hole 2 can be released by, for example, pushing the tip of the locking portion 26 with a finger or the like in the direction opposite the inclined surface inside the helmet body 1.

In addition, Figures 5 and 6 show an example in which, for example, when the equipment 10 is a lighting device, a power supply device 30 such as a storage battery for the power supply of the lighting device can be supported on the back of the helmet body 1. The support structure is the same as the support structure on the front of the helmet body 1, so details are omitted. As shown in the figure, the power cable C connecting the lighting device (10) etc. and the storage battery (30) etc. can be supported neatly and without getting in the way by engaging with an appropriate number of support hook portions 9 formed in a groove-shaped gutter portion 8 formed on the opening edge of the helmet body 1.

Figure 7 shows a second embodiment, in which each of the pair of guide pieces 24 in the locking stopper 21 is resiliently biased to tend to expand outward, and has a locking projection 25 protruding outward at its tip. The resilient guide pieces 24 with the locking projections 25 can be firmly fixed to the locking hole 2 by forcibly inserting them into the locking hole 2, so that the locking projections 25 engage with the upper and lower edges of the locking hole 2, and the locking stopper 21 can be released from its engagement with the edge of the locking hole 2 by a forced release force on the guide pieces 24.

Next, an example of how to use this will be described. For example, when attaching a lighting device (10) to a helmet body 1 used at various construction sites, etc., the belt 15 is inserted through the belt insertion portion 11 formed on the lighting device (10) to connect them, and the locking stopper 21 connected to the belt 15 is forcibly inserted into the locking hole 2 provided in the helmet body 1 against the elasticity of the locking portion 26. The forced insertion causes the hook step portion 27 of the locking portion 26 to lock into the edge of the locking hole 2, and the belt 15, which is in an appropriate tension state, supports the lighting device (10) on, for example, the front surface of the helmet body 1. When removing the lighting device, the locking portion 26 protruding from the inside of the helmet body 1 can be pushed toward the inclined surface to release the locking state provided by the hook step portion 27.

The equipment 10 can be used to mount and support not only lighting equipment, but also various items used when wearing the helmet, such as cameras, communication devices, other electronic devices, and various small items. Also, as described above, a base member is used to connect the belt 15 to which the locking stopper 21 is connected, and the equipment 10 can be appropriately fixed to this base member, making it a versatile support mode.

The third embodiment shown in Figures 8 and 9 will be described below, and explanations of the components indicated by the common reference numerals used in the first embodiment will be omitted. In this third embodiment, a support seat 4 is formed on the front of the helmet body 1, for example, in a vertically bulging manner, and slit-shaped locking holes 2 are formed on both the left and right sides of the support seat 4, serving as connecting parts.

The base member 41, which is a fastening device connected to the equipment 10, is adapted to be fastened to the fastening hole 2. The base member 41 is provided with a base body 42 on which a pair of fastening projections 43, for example, L-shaped when viewed from above, are provided so as to be forcibly inserted and fastened by a resilient action into the slit-shaped insertion portion 16 provided on the back of the equipment 10 to connect the equipment 10, a hook 44 provided on one edge of the base body 42 so as to be inserted and fastened into one of the fastening holes 2 in the support seat 4 of the helmet body 1, and a clip portion 45 provided on the other edge of the base body 42, resiliently biased to be inserted into the other fastening hole 2 in the support seat 4.

The clip portion 45 is designed so that the front end of the operating piece, which is freely pivotable and biased by, for example, a coil spring, can be inserted into the locking hole 2 by pivoting the operating piece open and closed.

According to this, in the base member 41 that supports the equipment 10 by the locking protrusion 43, the hook 44 is inserted and locked into one of the locking holes 2 in the support seat 4, and then the operating piece of the clip part 45, which has been in an open state against the elastic force, is inserted into the other locking hole 2 by elastic force. In this way, the equipment 10 can be attached to the helmet body 1 via the base member 41. To remove the equipment 10, it is sufficient to release the lock of the clip part 45 with the locking hole 2 and also the lock of the hook 44 with the locking hole 2.

In the fourth embodiment shown in Figures 10 and 11, a connecting seat 5 is formed in a stepped shape that bulges out in the left-right direction, for example on the front side of the helmet body 1, and a slit-shaped locking hole 2 that serves as the connecting part is opened and formed on the upper surface and front side of this connecting seat 5.

The base member 51, which is a fastening device that is connected to the equipment 10, is adapted to be fastened to the fastening hole 2. The base member 51 is comprised of a base body 52 provided with a pair of L-shaped fastening projections 53, for example, when viewed from above, which are forcibly inserted and fastened by a resilient action into the slit-shaped insertion portion 16 provided on the back of the equipment 10 to connect the equipment 10, and a clip piece 54 which is inserted against its own resilience through the fastening hole 2 on the top surface of the connecting seat 5 of the helmet body 1, and is fastened by a resilient force to the fastening hole 2 on the front surface of the connecting seat 5.

The locking protrusions 53 are located on the left and right sides of the front of the base body 52, and the clip pieces 54 are provided on the back of the base body 52 along the vertical direction, becoming gradually thinner toward the bottom end, and having a locking step 55 on the base body 52 side, giving it a U-shaped appearance when viewed from the side. In other words, when the clip pieces 54 are inserted into the locking hole 2 on the top surface, they are forcibly inserted in a curved shape against their own elastic force, but when they reach the locking hole 2 on the front surface, they return to their original shape due to their elastic action, allowing the locking step 55 to lock into the edge of the locking hole 2.

In this way, in the base member 51 that supports the equipment 10 with the locking protrusion 53, the clip piece 54 is inserted against the elastic force from the locking hole 2 on the top surface of the connecting seat 5, and is brought to the locking hole 2 on the front surface and locked into this locking hole 2 by the elastic action of restoring. In this way, the equipment 10 can be attached to the helmet body 1 via the base member 51. To remove the equipment 10, the clip piece 54 can be forcibly removed from the locking hole 2 and pulled out.

In the fifth embodiment shown in Figures 12 to 14, the connecting portion is formed by opening a pair of vertically elongated slit-shaped through-holes 6 on the left and right sides of the helmet body 1, for example, on the front part, and providing a locking hook 7 on the inner edge side of the through-holes 7.

Then, at the connecting portion consisting of the insertion hole 6 and the locking hook 7, a loop-shaped elastic string material 61 is inserted through the insertion hole 6 as a locking device that is connected to the instrument 10 and expands and contracts elastically, and is locked to the locking hook 7, so that the elastic action of the elastic string material 61 supports the instrument 10.

The elastic string material 61 is inserted in sequence through the four hole-shaped string insertion holes 17 arranged on the back of the equipment 10, for example, on the left, right, top and bottom of the back, and is formed into a loop shape that protrudes outward on the left and right sides of the equipment 10. The protruding portion of this elastic string material 61 is inserted into the insertion hole 6 in the helmet body 1 and is engaged with the engaging hook 7. If necessary, this elastic string material 61 can be appropriately fixed on the back of the equipment 10.

According to this, a loop-shaped elastic string material 61 is inserted through the string insertion hole 17 of the equipment 10, and the protruding portion of this elastic string material 61 is inserted through the insertion hole 6 of the helmet body 1 and engaged with the engaging hook 7, so that the equipment 10 can be attached to the helmet body 1 via the elastic string material 61. When removing the equipment 10, it is sufficient to remove the elastic string material 61 from the engaging hook 7 inside the helmet body 1.

C...power cable 1...helmet body 2...locking hole 3...step surface 4...support seat 5...connecting seat 6...insertion hole 7...locking hook 8...rain gutter section 9...support hook section 10...instruments 11...belt insertion section 15...belt 16...insertion section 17...string insertion hole 21...locking stopper 22...stopper body 23...belt connecting section 24...guide piece 25...locking projection 26...locking section 27...hook step section 30...power supply device 41...base member 42...base body 43...locking protrusion 44...hook 45...clip section 51...base member 52...base body 53...locking protrusion 54...clip piece 55...locking step section 61...elastic string material

Claims (1)

A helmet with an instrument mounting device comprising: a helmet body; and an instrument mounting device for mounting and supporting instruments on the helmet body, wherein the helmet body has hole-shaped engagement holes formed on the upper and front surfaces of a stepped connecting seat which bulges out along the left-right direction of the helmet body, and the instrument mounting device has a clip piece provided on a base member which is connected to the instruments, and wherein this clip piece is forcibly inserted into the engagement hole on the upper surface of the connecting seat against the elastic force of the clip piece itself, and has an engagement step which engages with the hole edge of the engagement hole on the front surface after insertion .

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