TWI805637B - The lower body waterproof structure reformation of a full rain suit - Google Patents

Abstract

In eastern south asia, wearing a full rain suit while riding motorcycle or scooter in rainy day is very ordinary. However, the drawback of a full rain suit is the lower body design, rain fallen from heaven often accumulate above the groin and overflow the conjunction objects of the full rain suit, causing the inner clothes wet.

To solve this problem, we provide a new design structure by taking Newton's second law of motion and Coand

Description

Improved Waterproof Structure of Lower Body of One-piece Raincoat

The invention relates to the improvement of the waterproof structure of the lower half of the one-piece raincoat

1. The common design of a one-piece raincoat is shown in Figure 12. It is a knee-length raincoat body and two raincoat sleeves sewn together, and the front opening of the raincoat is divided into a left front piece and a right front piece. There is a left front extension piece and a right front extension piece at the end of the front piece and the right front piece respectively, the left front extension piece and the right front extension piece can be fixed by adding a connecting piece such as a button, a zipper, a Velcro felt, etc. The piece itself is not waterproof, and it is very easy to get water when it encounters rainwater. Therefore, in practice, an inner piece that can be fixed on the left and right is added to the inside of the raincoat to prevent/drain water when it seeps in. This design is shown in the tenth Figure 3 shows, while Figure 14 shows the actual combination. However, the disadvantage of this design is that when the groin encounters stagnant water, the accumulated water will easily seep into the inner panel, and the accumulated water in the inner panel will eventually break through the connection of the inner panel, causing rain to soak the clothes you are wearing .

2. In order to solve this kind of problem, it is known through checking the patent information retrieval system of our country that there is an improved invention proposed by I552697, which adds a water-blocking valve to the zipper of the inner sheet. This invention is shown in Figure 15 Shown, and the sixteenth figure is the situation of the actual combination, and the direction of the water flow that the invention expects to infiltrate is circular flow, as shown by the arrow in the seventeenth figure.

effect)。該效應又稱附壁作用，其定義為流體(水流或氣流)有離開本來的流動方向，改為隨著凸出的物體表面流動的傾向。生活中最常見的例子如： However, the invention of I552697 only considers that rainwater will be affected by Newton’s second law of motion, that is, there is a gravitational acceleration g on the earth’s surface, which is matched with the mass m of rainwater itself, so that rainwater is constantly subjected to an external force F, and has a tendency to move toward the earth’s surface, but it does not consider to the Kant effect in aerodynamics (Coand

effect). This effect is also known as wall attachment, which is defined as the tendency of fluid (water flow or air flow) to leave its original flow direction and flow along the surface of a protruding object instead. The most common examples in daily life are:

a. When pouring water from the water bottle slowly, the water will flow all the way along the outer edge of the water bottle to the bottom of the outer edge of the water bottle.

b. If the wrist is slightly higher than the elbow when washing hands, the water will flow all the way from the wrist to the elbow.

When wearing a one-piece raincoat, depending on the wind pressure, the size of the rain, and the amount of accumulated rain on the legs, when each user wears it, the left and right front panels will have different levels of wrinkles on the thighs. All of the above Factors make the surface of the raincoat between the two thighs non-horizontal and cover the thighs. In addition, when stopping at a red light, the legs still need to be put down to change the direction of water flow, which makes the Kant effect more likely to occur. When rainwater flows into the inner sheet, the actual flow direction of the abdomen and groin of the invention in I552697 should be as shown in Figure 18, that is, the water will flow down all the way along the edge of the left or right front sheet and break through the joint of the inner sheet, and the The water-blocking valve in the groin is also affected by gravity and will tend to sag, making the opening at the joint of the inner plate larger and the problem of water ingress more serious. From this point of view, the water blocking flap of the improved invention of I552697 cannot achieve a complete water blocking function, and needs to rely on another patent I474787 of the inventor to add a second water blocking valve for receiving and draining water through the inner thigh cloth to make up for this shortcoming, as shown in Figure 19.

In order to solve the problem that the inner sheet of the above-mentioned raincoat needs to pass through multiple drainage structures to drain water smoothly, the present invention proposes a structure. The water-blocking flap covers the joint of the inner sheet. Or as shown in the second figure, the left or right front extension piece of the raincoat is extended and bent, and directly used as a water blocking flap to prevent the Kant effect.

When a rider rides a motorcycle, the thighs are usually placed horizontally, but rainwater will accumulate between the two legs, causing the center of the inner panel to become a U-shaped relatively low point due to the gravity of the rainwater. Rainwater will continue to accumulate in the groin, and eventually overflow to the joint of the inner piece and seep. All a front-opening raincoat (the one with the zipper in the middle and set directly in front of the raincoat) will accumulate water in the groin, no matter whether it is blocked or not. The same is true for water flaps, so the present invention improves the inner sheet style so that the width at the bottom is much wider than that at the top, similar to a fan-shaped structure. As shown in the third figure, the fan-shaped inner sheet structure is similar to a water slide, except In addition to preventing rainwater from flowing back due to knee height, it can also serve as a drainage buffer zone for a large amount of rainwater to flow to the abdomen and groin.

After the fan-shaped inner structure is combined with the raincoat, the appearance will look like the fourth picture. At this time, when actually wearing it, it needs to be divided into chest cross-section and thigh cross-section to observe the actual way of rainwater flow. In the thoracic cavity, because the chest is subjected to wind pressure, the inner piece will appear flat, as shown in the fifth figure. At this time, the water-retaining flap may be flat in front of the chest, which can increase the buffer distance before the rainwater passes through the inner sheet; or, as shown in the sixth picture, the water-retaining flap zigzags and covers the joint of the inner sheet , this mode can cover the connection of the inner piece, It makes it difficult for the inner clothes to come into contact with rainwater, and because the angle at the chest cavity is extremely steep at 90 degrees, rainwater is not only difficult to infiltrate, but also less likely to accumulate here.

However, most of the rain will accumulate on the thighs. When the fan-shaped inner sheet with a narrow top and a wide bottom is constructed at the thigh, its cross-section is shown in Figure 7. Because the surface area of the lower edge of the inner sheet increases, it can accommodate more The rainwater acts as a drainage buffer zone. Even when the thigh and knee are higher than the groin, the opening of the inner sheet is still downward, so it can effectively drain water. Furthermore, the water retaining flap is not pulled by the left and right front connecting parts, and will naturally hang down to cover the inner connecting part by gravity, effectively preventing the Kant effect from occurring, so that if the rainwater wants to flow back from the lower edge of the water retaining flap to the inner connecting piece When it is placed, it is necessary to provide an external force to give it the gravitational potential energy (△U=mgh), that is, there must be a force F applied upwards to offset the gravity mg of the rainwater itself, and take its position from the edge of the water retaining flap as The work is lifted to the joint of the inner sheet, that is, the height difference h between the two. Therefore, the longer the length of the water retaining flap, the greater the height difference h between the two, which will make it less likely for rainwater to cross the water retaining flap and reach the position where the inner sheet is connected.

The purpose of the water retaining flap is mainly to prevent the occurrence of the Kant effect and make it difficult for rainwater to flow upstream and break through the joint of the inner panel. Depending on the location of the joint of the inner panel, the water retaining flap can be installed on the left front panel, right front panel, and left front extension panel of the raincoat , Any position on the inner edge of the right front extension piece is acceptable.

The length and width of the inner sheet and the water retaining flap can be adjusted as needed, and there is no limit to only one sheet, and the structure can also be formed by splicing multiple sheets.

The left and right direction of the present invention is the relative position shown from the perspective of the human body, but the opening of the raincoat can also be opened on the left; at this time, all descriptions and symbols of the present invention have mentioned directions, which can be directly used in another direction. Orientation can be substituted.

The surfaces of the left front extension piece and the right front extension piece are originally used to place connecting parts (snap buttons, Velcro, etc.) to fix the left and right front pieces of the raincoat body. The water blocking flap can directly use the left front extension piece or the right front extension piece as a water blocking piece. valve.

1: Raincoat body

2: Left front piece

3: right front piece

4: Left front extension piece

5: Right front extension piece

6: Left inner connecting piece

7: Right inner piece connecting piece

8: inner piece

9: water blocking valve

10: Edge of water blocking flap

11: Left front extension connecting piece

12: Right front extension piece connecting piece

13: Water blocking flap edge connector

14: Internal connecting parts of the inner sheet

15: The second connecting piece of the right front extension piece

16: water blocking cloth

The first figure: a schematic cross-sectional view of the present invention

The second figure: a schematic cross-sectional view of another embodiment of the present invention

The third picture: the structure diagram of the internal chip of the present invention

Figure 4: Schematic diagram of various parts of the front of the present invention

The fifth figure: the cross-sectional schematic diagram of the present invention in the chest cavity

Figure 6: Another cross-sectional schematic diagram of the present invention in the cross-section of the thorax

The seventh figure: the cross-sectional schematic diagram of the present invention in the cross section of the thigh 1

The eighth figure: Another embodiment of the cross-section of the present invention in the cross-sectional schematic diagram of the thigh 2

The ninth figure: another embodiment of the cross-section of the present invention in the cross-sectional schematic view of the thigh 3

Figure 10: Another embodiment of the cross-section of the present invention in the cross-sectional schematic view of the thigh 4

Eleventh figure: another embodiment of the cross-section of the present invention in the cross-sectional schematic view of the thigh 5

Figure 12: Schematic diagram of the front parts of the known raincoat

Figure 13: Schematic diagram of various parts of prior art 1

Figure 14: Schematic diagram of the combination of various parts of prior art 1

Figure 15: Schematic diagram of various parts of prior art 2

Figure 16: Schematic diagram of the combination of various parts of the prior art 2

Figure 17: Schematic Diagram of Water Flow Direction Prediction in Prior Art 2

Figure 18: The actual schematic diagram of the water flow direction of the prior art 2

Figure 19: Schematic diagram of the invention of I474787

Take the first figure as an example, a raincoat, the front opening is divided into a left front piece 2 and a right front piece 3, the end of the left front piece 2 is provided with a left front extension piece 4, and the end of the right front piece 3 is provided with a right front extension piece 5, and the left front extends The inner side of the sheet 4 is provided with a left front extension sheet connector 11, and the outside of the right front extension sheet 5 is provided with a right front extension sheet connector 12, so that the raincoat can be connected left and right through the left front extension sheet connector 11 and the right front extension sheet connector 12. The end of the left front extension sheet 4 is additionally provided with an inner sheet 8, and the end of the inner sheet 8 is provided with a left inner sheet connector 6, and the end of the right front extension sheet 5 is additionally provided with a right inner sheet connector 7, the inner sheet 8. The left and right connections can be made through the left inner piece connecting piece 6 and the right inner piece connecting piece 7. The end of the right front extension piece 5 is provided with a water blocking flap 9, the other edge 10 of the water blocking flap 9 can be floating and unfixed, and at least one water blocking flap is extended from the right front piece 3 or the end of the right front extension piece 5 and Covering the connection between the left inner sheet connecting piece 6 and the right inner sheet connecting piece 7 .

Take Figure 9 as an example, a raincoat, the front opening is divided into a left front piece 2 and a right front piece 3, the end of the left front piece 2 is provided with a left front extension piece 4, and the end of the right front piece 3 is provided with a right front extension piece 5, and the left front extends The inner side of sheet 4 is provided with a left front extension sheet connecting A right front extension piece connector 12 is arranged on the outside of the knot piece 11 and the right front extension piece 5, so that the raincoat can be connected left and right through the left front extension piece connection piece 11 and the right front extension piece connector 12. The end of the left front extension sheet 4 is additionally provided with an inner sheet 8, and the end of the inner sheet 8 is provided with a left inner sheet connector 6, and the end of the right front extension sheet 5 is additionally provided with a right inner sheet connector 7, the inner sheet 8. The left and right connections can be made through the left inner piece connecting piece 6 and the right inner piece connecting piece 7. A water blocking flap 9 is provided at the end of the right front extension sheet 5, and a water blocking flap edge connecting piece 13 can be provided on the other edge 10 of the water blocking flap 9 to combine with the internal connecting piece 14 of the inner sheet.

Take the tenth figure as an example, a raincoat, the front opening is divided into a left front piece 2 and a right front piece 3, the end of the left front piece 2 is provided with a left front extension piece 4, and the end of the right front piece 3 is provided with a right front extension piece 5, and the left front extends The inner side of the sheet 4 is provided with a left front extension sheet connector 11, and the outside of the right front extension sheet 5 is provided with a right front extension sheet connector 12, so that the raincoat can be connected left and right through the left front extension sheet connector 11 and the right front extension sheet connector 12. The end of the left front extension sheet 4 is additionally provided with an inner sheet 8, and the end of the inner sheet 8 is provided with a left inner sheet connector 6, and the end of the right front extension sheet 5 is additionally provided with a right inner sheet connector 7, the inner sheet 8. The left and right connections can be made through the left inner piece connecting piece 6 and the right inner piece connecting piece 7. At the end of the right front extension sheet 5 is provided a right front extension sheet connecting piece 15 , and the right front extension sheet second connecting piece 15 can be combined with the inner sheet internal connecting piece 14 .

As shown in the first figure, the water blocking flap 9 connected to the end of the right front extension piece can be closed or detachable, that is, the water blocking flap 9 can be a built-in or external waterproof material.

As shown in Figure 9, the water blocking flap edge connector 13 can be located on the front or back of the water blocking flap 9, and is combined with the inner sheet internal connecting member 14 at any position of the inner sheet 8.

As shown in Figure 11, the water blocking flap edge connecting piece 13 can be located on the front or back of the water blocking flap 9, and is combined with the second connecting piece 15 of the right front extending piece at any position of the right front extending piece 5.

2: Left front piece

3: right front piece

4: Left front extension piece

5: Right front extension piece

6: Left inner connecting piece

7: Right inner piece connecting piece

8: inner piece

9: water blocking valve

10: Edge of water blocking flap

11: Left front extension connecting piece

12: Right front extension piece connecting piece

Claims (5)

A waterproof structure for a raincoat, comprising a raincoat body and two raincoat sleeves, wherein the front opening of the raincoat body is divided into left and right front pieces, and at least one inner piece extends from the inner side of the left and right front pieces, and the shape of the inner piece is A shape with a narrow top and a wide bottom, and the edge of the inner piece has a left inner piece connecting piece that can be connected with the right inner piece connecting piece, and has at least one water blocking flap extending from the right front piece or the end of the right front extension piece and covering it The link between the right inner piece connecting piece and the left inner piece connecting piece. A waterproof structure for a raincoat, comprising a raincoat body and two raincoat sleeves, wherein the front opening of the raincoat body is divided into left and right front pieces, and at least one inner piece extends from the inner side of the left and right front pieces, and the shape of the inner piece is A shape with a narrow top and a wide bottom, and the edge of the inner sheet has a right inner sheet connecting piece that can be connected with the left inner sheet connecting piece, and has at least one water blocking flap extending from the left front piece or the end of the left front extension piece and covering it The junction of the left inner piece connecting piece and the right inner piece connecting piece. As the waterproof structure of the raincoat described in item 1 and 2 of the scope of the patent application, the water blocking flap can be a built-in or externally connected waterproof material. For the waterproof structure of the raincoat described in item 1 and 2 of the scope of the patent application, the water blocking flap can directly use the left front extension piece or the right front extension piece as the water blocking flap. The waterproof structure of the raincoat as described in item 1 and 2 of the scope of the patent application, wherein the edge of the water blocking flap has a water blocking flap edge connector, which can be connected with the left front extension piece, the right front extension piece or the inner piece.

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