JPH0327451Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention incorporates a check valve that enables large air flow and operates with a small opening pressure into an eyelet that can be easily attached to cloth, etc. It relates to eyelets and can be used for raincoats, shoes, etc.

[Conventional technology]

Grommets have traditionally been attached to cloth and used as holes for threading strings or for ventilation. In particular, for ventilation, eyelets with nets have been used to prevent dirt from entering through the eyelet holes, and have been used to ventilate raincoats, shoes, and the like. Further, as shown in FIG. 2, a thin plate-shaped valve 1' made of a soft elastic material such as rubber is attached to the center of the valve mount 12, and a narrow area of the valve mount 12 covered by the valve 1' is attached. An eyelet 2 is known which is provided with a small hole 6 through which air passes. This eyelet has a structure in which air enters through a small hole 6 made in the valve mounting base 12 and pushes open the valve 1', so when the wind pressure passes through the small hole 6, it is weakened.
In addition, there was a drawback that the air volume was limited by the small hole 6.

[The problem that the idea attempts to solve]

The eyelet shown in FIG. 2, which can be easily attached to a soft material such as cloth, has a small hole 6 in a narrow area covered by the valve 1' of the valve mounting base 12.
The hole diameter and number of the small holes 6 are limited. Therefore, since the valve is pushed open by the air that has passed through the small hole smaller than the eyelet hole, a large amount of air cannot be obtained, and at the same time, when the wind passes through the small hole 6, the wind pressure is weakened.

The present invention addresses this problem.

[Means to solve the problem]

This problem was solved by bringing the entire periphery of the disk-shaped valve into contact with the entire periphery of the eyelet hole.

〔Example〕

To explain this using drawings, FIG. 1 is a sectional view of an eyelet having the function of a check valve according to the present invention, in which the valve 1 is made of a soft elastic material such as rubber, and
It has a disk shape, and the entire peripheral edge of this valve is in contact with the entire outer peripheral edge of the hole 3 of the eyelet 2. Also, valve 1
is fixed by a protrusion 5 provided at an inner part of the cover 4, for example, at the center.

The air directly pushes open the entire periphery of the valve 1 through the hole 3 in the eyelet 2 and exits through the hole 4' in the cover 4. Incidentally, since the holes 4' can be formed in a wide range of the cover 4, the hole diameter or the number of holes can be freely selected.

Note that 10 is a holder for attaching the cover 4 to the eyelet 2, and is fixed to the periphery of the eyelet 2.
This holding part 10 is an annular member made of rubber and having an inwardly inclined rising part 10' on the entire periphery. Standing portion 1 of the holding body 10
0' into which the peripheral edge of the cover 4 is fitted.

FIG. 3 shows another embodiment of the present invention. That is, the entire periphery of a cover 7 having a large number of small holes 7' is attached to one side of the eyelet 2, and a convex portion 8 is provided in the center thereof. The valve 1 is in contact with the other side periphery of the hole 3 of the eyelet 2 and is not in contact with the convex portion 8. Although the convex part 8 is located under the small hole 9 made in the center of the valve 1, it is not in contact with the small hole 9, and a space is formed. In this state,
A space-filling adhesive 11 such as epoxy resin is poured into the space and hardened to fix the valve 1 to the cover 7. In this case, since the valve 1 is fixed in a state in which it is in slight contact with the eyelet hole 3, the valve opening pressure can be further reduced.

[Effect of the invention] As described above, since the valve is installed so as to close the eyelet hole and the entire periphery of this valve is brought into contact with the entire periphery of the eyelet, it is possible to incorporate a check valve that allows a large amount of air to pass through. Furthermore, since the valve can be used by punching out a flat thin rubber plate, it is possible to manufacture a valve that is homogeneous and has little variation. Also, since the valve is made from a flat plate, the valve can be made at a very low cost. In addition, an inexpensive check valve with a large air volume can be incorporated into the eyelet, which is easy to attach to cloth, etc., and can be attached to the ventilation hole of a raincoat or katsupa or part of boots to create a well-ventilated raincoat that does not get stuffy. You can make cutlets and shoes.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of an eyelet incorporating a check valve according to the present invention, Fig. 2 is a longitudinal sectional view of an eyelet incorporating a conventional check valve, and Fig. 3 is a longitudinal sectional view of another embodiment. It is a diagram. 1... valve, 2... eyelet, 3... eyelet hole,
4, 7...Cover, 5...Protrusion, 8...Protrusion, 9
...Small hole made in the valve, 10...Holding body, 11
……glue.

Claims (1)

[Scope of utility model registration request] A disk-shaped part on the entire periphery of one side of the eyelet hole, and
A non-return check characterized in that the entire periphery of a valve made of a thin soft elastic material comes into elastic contact, and a part of the valve is fixedly supported by a cover fixed at the outer periphery of the eyelet so as to cover the eyelet. An eyelet that functions as a valve.