JP2007056393A - Helmet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that there are frequent cases where a visor contacts a surveying instrument to become an obstacle and a risky behavior such as removing of the conventional helmet is exhibited for avoiding the problems every time the cases occur when the surveying is carried out in a work site, and that there are various scattered materials or a plurality of articles adversely affecting eyeballs such as sparks by welding operation in the work site and the helmet and goggles must be used together for safety, etc. <P>SOLUTION: The helmet is obtained by mounting the visor 12 so as to be vertically movable in the vertical direction with pivot shafts in a peripheral edge of a shell body 11, composing the visor 12 of a transparent or a translucent material and making the visor function as the goggles or sunglasses. Locking mechanisms for locking the vertical movement of the visor 12 in the vertical direction are provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a helmet.

     Conventionally, most helmets have been formed by integrally forming a shell made of hard plastic or the like and a heel.

     When surveying at the construction site with the above helmet on, the bag touches the surveying instrument and gets in the way. To avoid this problem, take off the helmet or put it on the net to prevent the heel from coming into contact with the surveying instrument, but this does not fulfill the original purpose of the helmet to protect the head, It is very dangerous.

In order to solve such a problem, there is a helmet having a function of moving a heel (for example, see Patent Document 1).

As shown in FIGS. 9 (A) and 9 (B) of the drawings attached to the present specification, the helmet described in Patent Document 1 is a substantially hemispherical shell made of hard plastic or the like. The peripheral edge 1a is circular. Reference numeral 2 denotes an eaves portion which is formed integrally with a circular sliding annular portion 2a. The sliding annular portion 2a is fitted to the peripheral edge 1a of the shell 1 so as to be slidable in the circumferential direction. A bulging portion 2 b projects from the sliding annular portion 2 a on the side opposite to the eaves portion 2.

According to this configuration, the scissors can be moved to a position that does not get in the way, and surveying work can be performed without the scissors coming into contact with the surveying instrument.
JP 2001-146623 A

     In the conventional helmet as described above, when looking into the surveying instrument while wearing the helmet, the heel touches the surveying instrument and interferes with the surveying instrument. You have to take it off or put it on the net, but this is very dangerous because you cannot protect your head.

     Also, there are many things that adversely affect the eyeball, such as various scattered objects and sparks caused by welding work, and a helmet and protective glasses must be used together for safety. Another object of the present invention is to solve this problem with a single helmet.

Moreover, although the thing of patent document 1 can move to the position which does not get in the way of a eyelid, it cannot protect an eyeball.

     In addition, since the configuration is complicated, the number of parts increases and the manufacturing cost tends to increase. However, the present invention aims to solve these problems.

   The invention of claim 1 for solving this problem is characterized in that a hook is attached to a peripheral edge of the shell body by a pivot so as to be raised and lowered in the vertical direction.

     With such a configuration, the heel is attached to the peripheral edge of the shell so that it can be raised and lowered by the pivot, so if the heel is raised upward, the surveying work will be carried out while the helmet is properly worn. Even if you look into the instrument, the cage does not come into contact with the survey instrument and you can perform surveying work without any problems.

     Moreover, if the eyelid is lowered downward, the front of the eyeball is shielded, so that the eyeball can be protected from scattered objects.

The invention of claim 2 is the helmet according to claim 1, characterized in that the bag is made of a transparent or translucent material.

   With this configuration, when the eyelid is lowered downward and the front direction of the eyeball is blocked, the eyelid functions as protective glasses.

   According to a third aspect of the present invention, in the helmet according to the first or second aspect, the base of the heel is provided with a lock mechanism that prevents the heel from moving up and down at a specific angle.

   According to this configuration, since the lock mechanism stops the raising and lowering of the heel, the helmet can be attached to and detached from the head by grasping the heel with a hand like a conventional helmet.

     According to the first aspect of the present invention, the helmet is attached to the peripheral edge of the shell body so as to be able to be moved up and down by the pivot so that the helmet does not come into contact with the surveying instrument when the cage is raised upward. The surveying work can be performed in the mounted state, and if the eyelid is lowered, the eyeball can be protected from scattered objects and the like, and the simple structure can reduce the number of parts and the manufacturing cost.

According to the second aspect of the present invention, when the eyelid is lowered downward, the eyeglass serves as protective glasses, so that the eyeball can be protected from scattered objects, and the head, eyeball protection and sunglasses can be protected with a single helmet. As a result, the convenience is very high.

     According to the invention of claim 3, when the helmet is attached to and detached from the head, the lock mechanism stops the raising and lowering of the heel, so that the heel can be grasped and detached as in the conventional helmet.

     BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. However, in the present invention, the helmet mounting band has no features, and thus the description thereof is omitted.

As one embodiment of the helmet according to claim 1, as shown in FIGS. 1 and 2, a substantially hemispherical shell 11 and a flange 12 integrally formed with bearings 13a and 13b projecting, As shown in FIG. 4, the rotating shafts 14 a and 14 b are fixed to or integrally formed with the shell 11.

In the present embodiment, the shell part 11, the flange part 12, the bearing parts 13a and 13b, and the rotating shafts 14a and 14b are made of hard plastic, and the rotating shafts 14a and 14b have a cross-sectional gear shape as shown in FIG. The punched shape inside 13a and 13b is made to match the sectional shape of the rotating shafts 14a and 14b. The rotating shafts 14a and 14b may be made of metal.

  In the above configuration, when the collar portion 12 is raised and lowered in the vertical direction, the convex portions of the rotating shafts 14a and 14b and the concave portions of the bearing portions 13a and 13b interfere with each other and rotate in stages. According to this, as the number of gear teeth increases or decreases, the number of rotation stages also increases or decreases. The same effect can be obtained even when the cross-sectional shape is a regular polygon.

Further, as shown in FIG. 5, if the bearings 13a and 13b projecting from the flange 12 are provided with openings and inserted into the rotary shafts 14a and 14b through the openings, the flange 12 can be easily installed. For example, as described below, it is possible to replace the flange 12 depending on the application.

When the heel part 12 is raised upward from the state shown in Fig. 2 (A) and Fig. 3 (A) and the state shown in Fig. 2 (B) and Fig. 3 (B) is taken, the helmet does not contact the surveying instrument. Surveying work can be performed without any trouble with the equipment attached normally.

In addition, when the buttock 12 is lowered downward from the state shown in FIGS. 2 (A) and 3 (A) to the state shown in FIGS. 2 (C) and 3 (C), the buttock 12 is in front of the eyeball. The direction is shielded, and the eyeball can be protected from scattered objects. At that time, in order to prevent the buttocks 12 from coming into contact with the face, as shown in FIG. 5 (B), when the buttocks 12 are lowered downward by integrally forming the protrusions 19 for rotation prevention on the buttocks 12 Can stop at a certain angle.

In this embodiment, the number of rotating shafts and rotating bearings is two, but can be appropriately changed to one or two or more.

     The rotary shafts 14a and 14b may be formed integrally with the shell 11, but as shown in FIG. 6, a square body A is integrally formed at both ends of the rotary shafts 14a and 14b, and the square body of the square body A is formed. It is also possible to form a perforation A ′ having the same shape so that both ends are accommodated, and insert and rotate the rotation shafts 14a and 14b into the shell 11 in the direction of the arrow.

     As an embodiment of the helmet according to claim 2, the heel part 12 is made of transparent or translucent plastic.

With this configuration, when the heel part 12 is lowered downward and brought into a state as shown in FIGS. 2C and 3C, the heel part 12 functions as protective glasses.

Furthermore, if a light transmission inhibitor such as a colorant is added to the transparent plastic of the heel part 12, it has an effect as sunglasses. For example, it is useful when it is necessary to visually observe the direction of the sun, illumination, etc. In addition, since the collar part 12 can be detached, it can be exchanged according to the use and preference depending on the color of the colorant.

Thus, according to the invention of claim 2, a single helmet has the functions of protecting the head, protecting the eyeball, and wearing sunglasses, and is very convenient.

     Next, the helmet according to claim 3 is the same as the helmet according to claim 1 or claim 2, but is provided with a stopper receiver 16a and a stopper plate 18a and 18b each having a resinous plate-like stopper 18a and 18b attached thereto as shown in FIG. 16b and the stopper receivers 15a and 15b attached to the shell 11 are in contact with the stoppers 15a and 15b so that one end is pivotally supported on the shell 11 by the rotation shafts 17a and 17b.

The operation of the invention of claim 3 will be described with reference to FIG. 7. When the stopper 18b is rotated to contact with a part of the stopper receiver 15b attached to the shell 11 as shown in FIG. 12 can be raised and lowered in the vertical direction, but when the stopper 18b is rotated so as to be in contact with a part of the stopper receiver 15a attached to the flange 12 as shown in FIG. 7 (B), the stopper 18b locks the flange 12 The shell 11 and the heel part 12 are fixed in the state shown in FIGS. 2 (A) and 3 (A). For example, the helmet is gripped by the hand like a conventional helmet. Can be desorbed.

   Also, as shown in Fig. 8, by providing protrusions 20 and 21 on the stopper receivers 15a and 15b, the stoppers 18a and 18b can be simply rotated while the stoppers 18a and 18b are in contact with the stopper receivers 15a, 15b, 16a, and 16b. Can be fixed.

   As shown in FIG. 8, the stopper receivers 15a, 15b, 16a, and 16b may be bonded and fixed to the flange portion 12 and the rotating shafts 17a and 17b may be fixed to the shell body 11 but the 15a, 15b, and 16a 16b can be integrally formed with the flange 12, and the rotary shafts 17a and 17b can be integrally formed with the shell 11.

It is the top view and bottom view which show one Example of the helmet of this invention. It is a side view of explanation of raising and lowering the buttocks of the helmet. It is a perspective view of explanation of raising and lowering the buttocks of the helmet. It is the perspective view which expand | deployed the component of the helmet. It is a principal part enlarged view which shows the structural example of the pivot structure of the peripheral edge part of the shell of the helmet, and a collar part. It is a principal part enlarged view which shows the structural example of the peripheral edge part of the shell of the helmet, and a rotating shaft. It is an enlarged plan view of description of operation | movement of the locking mechanism of Claim 3. It is the perspective view which expanded the component of the lock mechanism. 2 is a cross-sectional view and a bottom view of a helmet disclosed in Patent Document 1. FIG.

Explanation of symbols

1 Shell 1a Perimeter edge of shell
2 Eaves 2a Sliding ring
2b bulge 11 shell
12 Butt 13a Bearing
13b Bearing 14a Rotating shaft
14a Rotating shaft 15a Stopper holder
15b Stopper receptacle 16a Stopper receptacle
16b Stopper holder 17a Rotating shaft
17b Rotating shaft 18a Stopper
18a Stopper 19 Protrusion

Claims (3)

A helmet characterized in that it is attached to the peripheral edge of the shell so that the heel can be moved up and down by a pivot. The helmet according to claim 1, wherein the heel is made of a transparent or translucent material. The helmet according to claim 1 or 2, wherein a lock mechanism is provided at a base of the heel.

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