KR20040070027A - Flotation unit of life vest - Google Patents

Abstract

PURPOSE: A buoyancy body of a life jacket is provided to secure buoyancy and to improve air permeability in wearing the life jacket by ventilating an exposed seat body through a vent hole and by discharging the air in a buoyancy material through the vent hole. CONSTITUTION: A buoyancy material(7) is partially mounted on the surface of an air-permeable seat body(1) with the predetermined thickness to expose a portion of the surface of the seat body. The seat body has vent holes on inner and outer sides. The air flows through an inner part of the seat body in the direction of crossing the thickness direction. The seat body has a cushion effect in the thickness direction. Two double-knitted fabrics are separated at the predetermined gap and connected by link strings.

Description

FLOATATION UNIT OF LIFE VEST}

This invention relates to the buoyancy body of what is called a floating vest.

Conventionally, this kind of floating vest is provided with the buoyancy body in the front and rear part of left and right, respectively. The buoyancy body is provided with a foam as a means for generating buoyancy. Since the foam also functions as a heat insulator, it is particularly hot in summer.

Moreover, regarding the improvement of a floating vest, the thing of the structure similar to patent document 1 is proposed as follows, for example. The buoyancy body of this vest is a through-hole penetrating in the thickness direction.

<Patent Document 1>

Japanese Patent Laid-Open No. 2001-130484

<Patent Document 2>

Japanese Patent Laid-Open No. 2002-12189

However, the above-mentioned through hole is made for water drainage when falling in water. Although the buoyancy body disclosed in this publication forms a through hole for water drainage, it is difficult to ensure sufficient breathability even if a through hole is made for the purpose of breathability. That is, only the air located inside the place where the through hole is formed is discharged to the outside through the through hole locally. Thus, for example, it is insufficient to discharge the hot air full of the back to the outside.

Then, this invention is made | formed in view of the said conventional problem, and makes it a subject to provide the buoyancy body of the life vest which can ensure the breathability at the time of wearing easily.

1 is a front view showing a buoyancy body for the rear portion of the life jacket in one embodiment of the present invention.

2 is a cross-sectional view taken along line P-P in FIG.

3 is a schematic configuration diagram of a sheet body in the same buoyancy body.

Figure 4 is a front view showing a buoyancy body for the front portion of the operation life jacket.

<Description of the symbols for the main parts of the drawings>

1: sheet 2, 3: letter

4: connection room 5: ventilation area

7: buoyant material 8: covering

This invention was made | formed in order to solve the said subject, The buoyancy material of the life jacket which concerns on this invention is a buoyancy material partially mounted so that a part of the said surface may express on the surface of the breathable sheet | seat body which has a predetermined thickness, The sheet member has vent holes on both front and back surfaces thereof, and air is configured to be able to flow in the direction perpendicular to the thickness direction of the sheet body.

In particular, the sheet body preferably has cushioning properties in the thickness direction, and the sheet body is a double letter connected by a connecting chamber so that two letters on the front and back are separated from each other by a predetermined interval. It is preferable to provide cushioning property by bending.

<Example>

EMBODIMENT OF THE INVENTION Hereinafter, one Example of the buoyancy body of the life jacket concerning this invention is described, referring drawings.

Fig. 1 is a buoyancy body for the rear part, which shows a state seen from the surface side, and the surface of the buoyancy body is located on the back side of the life jacket in a state where it is attached to the life jacket.

The buoyancy body is attached by partially sewing the buoyancy material 7 to the surface of the breathable sheet body 1. By partially mounting the buoyancy material 7, a part of the surface of the sheet body 1 is exposed. On the other hand, since the back surface side of the sheet body 1 is not covered with the buoyancy material 7, the whole is expressed. However, the periphery of the sheet | seat body 1 is enclosed with the edge by the strip | belt-shaped cloth 6.

In the sheet body 1, vent holes are formed on both sides of the front and back spaced apart from each other by a predetermined interval in the thickness direction, and air can flow in the direction perpendicular to the thickness direction between the inside and the front and back sides. It consists of a composition. Specifically, the sheet body 1 is a double letter formed by a double Russell group, and as shown in FIG. 3, the front letter 2 and the back letter 3 spaced apart from each other by a predetermined interval. Is connected by a plurality of connecting rooms (4). In other words, the front and back letters have a plurality of vent holes, and the sheet body 1 has cushioning property in the thickness direction due to the bending of the connecting chamber 4. In addition, cushioning property is set suitably by the number, material, denier, etc. per unit area of the connection chamber 4.

On the other hand, the buoyancy material 7 attached to the surface of the sheet | seat body 1 of such a structure consists of various plastic foams, such as polyvinyl chloride (PVC), an ethylene-vinyl acetate copolymer (EVA), and polystyrene. The buoyancy material 7 is in a state where the whole of the buoyancy material 7 is covered. As the cover 8, for example, Jersey is used. More specifically, after adhering the coating body 8 to both sides of the front and back of the plate-shaped buoyancy material 7 having a substantially constant thickness, thermoforming (molding pressure) is performed in the thickness direction thereof. As a result, a part of the buoyancy material 7 is pressed in the thickness direction, the part is molded into a thin shape, and the buoyancy material 7 is formed with irregularities in the thickness direction. Since the coating body 8 is adhere | attached on both the front and back surfaces of the buoyancy material 7, the buoyancy material 7 will be formed in an unevenness | corrugation with the coating body 8. As shown in FIG. And the buoyancy material 7 covered with the coating body 8 is cut out at the thin part, and it becomes a predetermined shape. Therefore, the lip part which consists of the thin part 7a is formed in the periphery part of the buoyancy material 7 over the perimeter, and the rim part is framed by the strip-shaped shell 9, or it wraps around a predetermined shape, Buoyant material 7 is sewn onto the sheet body 1. As described above, the buoyancy material 7 is covered with the covering 8, and irregularities are formed in the thickness direction, and the buoyancy materials 7 thus formed are spaced apart from each other on the surface of the sheet 1, respectively. Equipped with. Moreover, the buoyancy material 7 is attached to the sheet body 1 so that the unevenness | corrugation may become an outer side, but the buoyancy material 7 becomes deformable in the thin part 7a by this unevenness | corrugation. In addition, since the buoyancy body can be bent at a place where the buoyancy material 7 is not attached, the buoyancy body deforms along the wearer's body when a life jacket is worn, thereby obtaining a high adhesion.

Moreover, although the area | region in which the buoyancy material 7 is not attached exists in the surface of the sheet | seat body 1, the said area | region is the ventilation area | region 5 for discharging the heat gathered inside the buoyancy body, The said ventilation area | region In the buoyancy body for the rear part shown in FIG. 1, 5 is provided in the part corresponded to substantially the center of a wearer's back, etc. other than the periphery of the sheet body 1 mainly.

In addition, the buoyancy body can be attached to or detached from the life vest. Therefore, the hook part 10 is provided in the upper part of the buoyancy body, and the snap button 11 is provided in the lower part of the buoyancy body, respectively.

In addition, about the buoyancy body for a front part as shown in FIG. 4, it is substantially the same structure except the point which differs in external shape, the attachment position of the buoyancy material 7, etc. differ.

The buoyancy body configured as described above is attached to the life vest by the hook portion 10 and the snap button 11 described above. In the attached state, the buoyancy material 7 is attached to the outer side of the wearer and the seat body 1 It is located inside each. And since the buoyancy material 7 is attached to the surface of the sheet | seat 1 partially, and the surface part of the sheet | seat 1 is exposed, the air flow area | region 5 passes through the surface part of the sheet | seat 1 which is being expressed. As a result, the warmed air is discharged from the ventilation region 5 to the outside. In that case, since the sheet | seat body 1 is a mesh structure, high air permeability is ensured. In addition, since the buoyancy member 7 is partially attached to the mesh member 1, the shape of the ventilation portion can be arbitrarily set as compared with the configuration in which the through-hole is formed in the buoyancy member, and the area can be easily secured. Do.

On the other hand, since the sheet body 1 which consists of double letters is made in the whole surface of the buoyancy body, air in parts other than the inside of the ventilation area | region 5 once enters inside the sheet body 1, and after that The inside of the sheet body 1 can flow up and down or from side to side in a direction orthogonal to the thickness direction. Therefore, the air which entered the inside of the sheet body 1 flows inside the sheet body 1 toward the said ventilation region 5 side, and is exhausted outside through the said ventilation region 5. Thus, not only the air inside the ventilation region 5 but also the air located inside the buoyancy material 7 are discharged from the ventilation region 5 through the sheet body 1, and as a result, the air located inside the buoyancy body The whole air can be discharged | emitted from the ventilation region 5 to the outside. That is, since the sheet body 1 itself functions as an exhaust duct and guides the air inside the buoyancy body to the ventilation region 5, high air permeability without expanding the area of the ventilation region 5. You can get it. Therefore, both buoyancy performance and aeration performance are easily obtained. In particular, since the sheet body 1 is a double letter and only the connecting chamber 4 is interposed inside the sheet body 1, the flow of air is not disturbed and high fluidity can be obtained. Furthermore, since the sheet 1 has cushioning properties, the sheet body 1 is stretched and contracted in the thickness direction in accordance with the movement of the wearer. As the sheet body 1 expands and contracts in this manner, the air stays inside the sheet body 1 is prevented.

In addition, the number and arrangement of the buoyant materials 7, the presence or absence of irregularities can be appropriately changed design, and of course, the configuration, thickness, shape and the like of the sheet body 1 can also be changed.

As described above, since the buoyancy material is partially mounted so as to expose a part of the surface of the breathable sheet body, the air can be ventilated through the air vents in the sheet body of the exposed portion. The inside of the body flows and is discharged to the outside from the vent hole of the exposed portion, thereby ensuring buoyancy and easily improving breathability at the time of wearing.

Claims (3)

A buoyancy material is partially attached to the surface of the breathable sheet body having a predetermined thickness so that a part of the surface is exposed. The sheet body has ventilation holes on both sides of the front and back, and air is inside the sheet body. A buoyancy body of a life jacket, characterized in that it is configured to be movable in a direction orthogonal to the thickness direction. The method of claim 1, The seat body is a buoyancy body of a life jacket having cushioning property in the thickness direction. The method of claim 2, The seat body is a double letter connected by a connecting chamber so that two letters between the front and back are separated from each other by a predetermined interval, and a buoyancy body of a life jacket having cushioning property by bending of the connecting room.