JP2810286B2 - Diving face mask - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

This invention relates to skin diving,
For diving face masks that divers wear on the face in diving such as scuba diving,
More specifically, the present invention relates to a diving mask with a purge valve for discharging water that has entered the mask and expiration of a diver in the mask to the outside of the mask.

[0002]

2. Description of the Related Art Conventionally, a mask with a purge valve, in which a hole is formed in the lower center of a lens, a valve holding member is mounted in the hole, and a valve member is held in the member (hereinafter, referred to as a first type). Molding the inner frame of the lens frame together with the insert of the lens, and integrally molding a cylindrical valve holding member extending upward in the frame and projecting forward in the lower central portion of the frame; There is a type in which a valve member is held at an intermediate portion in the longitudinal direction of the member (for example, Japanese Utility Model Laid-Open No. 49-33599, hereinafter referred to as a second type).

[0003]

In the first type, since the lower edge of the hole for fixing the valve holding member formed in the lens is located considerably above the inner bottom surface of the skirt, the inside of the mask is opened by the diver's exhalation. Water cannot be completely discharged, it is difficult to fix the valve holding member to the hole in a watertight manner due to the processing characteristics of the lens, and further, the field of view is narrowed to fix the valve holding member to the lens, and the entire mask Spoil the aesthetics of

[0004] The second type is designed to improve the aesthetics of the valve holding portion. However, as in the first type, the lower edge of the valve hole of the valve holding member is higher than the inner bottom surface of the skirt. Because it is located at the top, the invading water in the mask cannot be completely drained by the exhalation of the diver, and the valve holding member protrudes relatively large forward, narrowing the field of view and increasing the flow resistance and holding the valve. For example, seagrass may be caught on the member, which may hinder the diver's safe diving. Further, forming a relatively complicated valve holding member integrally with a lens frame formed by inserting and molding a lens is not only poor in productivity but also requires a separate covering member for the valve holding member and increases the number of parts.

An object of the present invention is to solve the above-mentioned various problems by providing a main part of a valve holding mechanism on a skirt.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a lens flare.
In the lower center area of the camera
An extending bent portion, wherein the lens includes the bent portion.
The lens is fitted to the inner periphery of the
Purge valve mechanism is set vignetting projecting from Les to the front side,
An elastic skirt extending rearward from the lens frame;
A pair of nose knobs are installed on both sides of the lower inner central area.
It is assumed that a diving face mask is used.

[0007] The path in the present invention is characterized in that the premise configuration
A storage valve mechanism is provided between the two nose knobs.
A valve cover member, a valve seat member, and a valve member.
Wherein the valve covering member is provided with the bending of the lens frame.
The lens frame so as to be bowed forward from the part
And formed integrally with the inside of the valve covering member.
The valve seat member has a first annular wall portion integrally therewith.
A first annular portion surrounding at least a portion of a valve seat having an outlet;
A second annular wall portion fitted to the wall portion and an outer periphery of the valve seat member;
A valve flange, the valve cover member and the valve seat
A valve chamber in which the valve member is located between the first and second members;
A valve storage chamber having a discharge opening facing the outside of the mask;
Protrudes forward adjacent to the lower inner surface of the skirt
The lens frame is located at the center of the bent portion,
Defines a connection port located on the outer periphery of the valve member and penetrating in the front-rear direction
A peripheral portion of the third annular wall portion
Is fitted between the first annular wall and the second annular wall.
Between the first annular wall and the flange in a watertight manner.
It is characterized by being held and connected .

[0008]

The water that has entered the mask concentrates on the lower inner surface of the skirt between the two nose knobs, and due to the expiration pressure from the diver's nose, the intruding water flows from the lower inner surface to the valve chamber, and the valve is closed. The peripheral area of the member resists its elasticity and moves outwardly from the valve seat to open the outlet of the valve seat, so that exhaled and intruded water drains out of the outlet desired outside the mask. When the exhalation pressure is released, the valve member returns to its original shape due to its elasticity, closes the discharge hole again, and prevents water from entering the inside from the outside of the mask.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, embodiments of a mask according to the present invention will be described below.

In FIG. 1 to FIG. 5, the mask is basically composed of a rigid lens frame 1 made of plastic, a rigid lens 2 made of glass or plastic, a flexible skirt 3 made of rubber or plastic, It comprises a purge valve mechanism 4 and a flexible strap 5 made of rubber or plastic.

[0011] As shown in FIGS. 1 and 4, the lens frame 1, the peripheral frame 6, and a inner frame 7 for the fitting to the inner periphery thereof. The lower central area of the lens frame 1 extends upward in the lens frame 1, and the interval between both sides gradually increases from the upper side to the lower side, and an arc-shaped bent portion 8 is formed at the upper part. The outer peripheral edge of the lens 2 is fitted into the inner peripheral groove 9 of the lens frame 1 including the bent portion 8 in a watertight manner.

The skirt 3 has its front edge sandwiched between the rear edges of the inner and outer frames 7, 6. The skirt 3 has a pair of nose knobs 10, which are separated from each other on both sides of the central area of the lower inner surface of the skirt 3, and are separated from the rear side of the lens frame 1 to form a part of the skirt 3. Are formed by being raised upward, so that a diver can insert a finger from below. The skirt 3 further has a short cylindrical annular wall portion 1 which is connected to the concave surface portion 11 between both nose knobs 10 and projects forward and defines a connection port 12 penetrating in the front-rear direction.
3 The connection port 12 has a flange 14.

The purge valve mechanism 4 includes a valve covering member 15
, A valve seat member 16 and a valve member 17.

The valve covering member 15 is integrally formed from the same material as the lens frame 6 and protrudes from the bent portion 8 to the front of the lens frame 6. The valve covering member 15 has a vertical cross section formed by an upper wall 15a that projects obliquely forward and downward from the bent portion 8 and that slopes to both sides and a lower wall 15b that slopes obliquely downward and rearward from the lower edge of the upper wall 15a. It is formed so as to curve forward in an arc shape. Since the valve covering member 15 has such a shape, the forward projecting length is shorter than when the valve covering member 15 projects in a cylindrical shape. The valve cover member 15 has an annular wall portion 18 facing the connection port 12 on the inner surface, a shaft portion 19 at the center thereof, and a discharge port 20 facing the outside of the mask on the lower surface thereof.

The valve seat member 16 is formed of a rigid plastic and has a plurality of discharge holes 22 centered on a boss 21.
It has an annular wall portion 23 surrounding the valve seat, a flange 24, and a discharge port (not shown) which matches the discharge port 20 on the lower surface thereof. The valve seat member 16 defines a valve chamber 28 between the valve seat member 16 and the valve cover member 15.

The valve member 17 is formed of rubber or plastic having elasticity, has a size close to the valve seat of the valve seat member 16 and closes the discharge hole 22, and has a center inserted into the outer peripheral edge of the front end of the boss 21. And a hole 25.

The purge valve mechanism 4 is assembled as follows. That is, the valve member 1 is attached to the boss 21 of the valve seat member 16.
7 and the outlet 20 of the annular wall 18 and the annular wall 23
The annular wall portion 23 is aligned with a discharge port (not shown) of the
Is inserted into the connection port 12 from the rear side (right side) of the connection port 12, protrudes forward and fits into the annular wall portion 18, and at the same time, the central portion of the valve member 16 is positioned between the shaft portion 19 and the boss 21 facing each other. The flange 1 of the connection port 12 is sandwiched by a groove 26 formed between the rear edge of the annular wall portion 18 and the flange 24.
4 in a watertight manner, and screw 27 on the rear side (right side) of boss 21
From the shaft portion 19.

[0018]

According to the mask of the present invention, the following effects can be obtained.

The purge valve mechanism is provided with a valve covering member having a structure integrally connected to a valve seat member in a lower central area of the lens frame, and a purge cover mechanism provided on a lower inner surface of a skirt adjacent to the connecting structure. Since a connection port for inserting a valve seat member is provided adjacent to the valve cover member and the connection between the valve cover member and the valve seat member, the structure and the assembling work are simple, and water entering the mask can be easily and substantially eliminated. It can be exhausted completely by the diver's exhalation.

Since the valve covering member which constitutes a part of the purge valve mechanism is curved forward, it does not protrude forward so as not to obstruct the visual field, and has a small water flow resistance. The divers will not be hindered by safe diving by catching on seaweeds.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view of a mask according to an embodiment of the present invention.

FIG. 2 is a front view of a purge valve mechanism of the mask as viewed from the rear side.

FIG. 3 is a perspective view of the purge valve mechanism as viewed from the rear side.

FIG. 4 is a front view of the mask.

FIG. 5 is a side view of the mask.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lens frame 2 Lens 3 Skirt 4 Purge valve mechanism part 8 Bent part 12 Connection port 13 Annular wall part (third) 15 Valve covering member 16 Valve seat member 17 Valve member 18 Annular wall part (first) 23 Annular wall part (No. 2) 24 flanges 28 valve room

Claims (2)

(57) [Claims] A bent portion extending upward in the lens frame is formed in a lower central region of the lens frame; a lens is fitted to an inner periphery of the lens frame including the bent portion; In a diving face mask in which a bent portion is provided with a purge valve mechanism portion projecting forward from the lens frame, and a pair of nose knobs separated from each other are provided on both sides of a lower inner surface central region of an elastic skirt extending rearward from the lens frame. The purge valve mechanism is provided between the two nose knobs, and includes a valve covering member, a valve seat member, and a valve member, wherein the valve covering member is located forward from the bent portion of the lens frame. The valve seat member is formed integrally with the lens frame so as to bend in an arcuate shape, and has a first annular wall portion inside the valve covering member and integrally therewith. A second annular wall portion surrounding at least a part of a valve seat having a discharge hole and fitted to the first annular wall portion, and a flange located on an outer periphery of the valve seat member; A valve chamber in which the valve member is located is defined between the valve seat member and the valve chamber. The valve chamber has an outlet facing the outside of the mask, and the skirt is adjacent to a lower inner surface of the skirt. A third annular wall protruding forward and defining a connection port located at the center of the bent portion of the lens frame and located on the outer periphery of the valve member and penetrating in the front-rear direction; A peripheral portion of the portion is watertightly sandwiched and connected between the first annular wall portion and the flange under fitting of the first annular wall portion and the second annular wall portion. The mask to be used. 2. A lens frame in a lower central area of a lens frame.
A bend extending upward in the frame is formed,
A lens fits on the inner periphery of the lens frame including the bent portion.
And a purge bar projecting forward from the bent portion.
A lube mechanism is provided, and from the lens frame
The lower elastic inner surface of the extending elastic skirt is separated from each other on both sides of the central area.
Diving face with a pair of intervening nose knobs
In mask,The lens frame includes an outer peripheral frame and the outer peripheral frame.
Formed with an inner peripheral frame that fits inside the In the skirt, a front flange of the skirt has the outer periphery.
By being sandwiched between the frame and the inner peripheral frame
Lower inner surface of the skirt held by the lens frame
Along the connection port that projects forward and
Having an annular wall with a flange positioned The fitting of the lens to the lens frame is
Formed by the inner peripheral frame and the front peripheral flange of the skirt
The outer peripheral edge of the lens is fitted watertight in the inner peripheral groove
Made by The purge valve mechanism is provided between the two nose knobs.
So that it is curved forward in an arc along with the outer peripheral frame.
And formed on the inner surface of the frame with the connection port.
Valve body having an opposed annular wall and a shaft in the center of the wall
A boss facing the cover member and the shaft, and discharging around the boss
A valve seat member having a hole and an outer peripheral flange;
And a valve member for opening and closing the discharge hole to be attached.
The annular wall portion of the valve cover member and the outer periphery of the valve seat member
Between the flange and the connection opening of the skirt
The flanges located are watertightly pinched and connected
The mask described above.