Condom

Abstract

This condom (1) is used by being attached to a penis part of a male and is provided with a protrusion having a hardness with which an unpleasant impression associated with a feeling of foreign matter is hardly felt even when a relatively large protrusion is formed on the surface. The condom (1) has a tip part (3) and a cylindrical part (2) formed by a thin-walled coating covering the penis, wherein a protrusion (5) in which air or other gas is sealed inside is provided on the side surface of the cylindrical part (3). The projection (5) is formed of a coating of the same material as the molding material constituting the tip part (3) and the cylindrical part (2). The protrusion (5) is formed of a coating of the same material as the molding material constituting the tip part (3) and the cylindrical part (2). The inside of the protrusion (5) is a cavity and is a site formed by a highly elastic thin coating having strength, similar to that of a main body part, and thus the protrusion (5) is configured to appropriately deform while having action as a protrusion when pressed. As a result, it is possible to provide a protrusion-equipped condom (1) having little foreign matter feeling.

Description

condom

[0001] The present invention relates to a condom.

[0002] Patent Document 1 describes a condom. This condom has a cylindrical shape with protrusions on the side, and is characterized by having a protrusion made of a material whose main component is urethane resin, a triangular coil spring-shaped body that is placed so as to abut against and cover the surface of the protrusion, and a rubber elastic body that is placed so as to cover the triangular coil spring-shaped body from above.

[0003] Japanese Patent Application Laid-Open No. 2022-68389

[0004] Condoms are used for contraception and sexually transmitted disease prevention, but some people dislike wearing them due to reduced sexual sensation. Patent Document 1 describes a condom with protrusions on the side of the condom to enhance sexual sensation. However, if the covering were to break and something resembling a triangular coil spring were to remain, it could be dangerous. Regardless of the material used to form the protrusions, it is essential to avoid the membrane breaking and leaving them inside the female genitalia. Furthermore, some condoms incorporate small ball-like protrusions integrally onto the surface of a condom when molding materials such as latex. However, these protrusions are solid objects formed by molding silicone or latex into a mold. This makes them feel relatively hard and foreign to the human body, resulting in a poor user experience. The present invention was developed in light of the above-mentioned problems, and aims to provide a condom with protrusions of appropriate hardness that are less likely to cause an unpleasant foreign-body sensation, even when relatively large protrusions are formed on the surface. Another objective of the present invention is to provide a condom that will not leave foreign bodies inside the female genitals even if the covering covering the protrusions is broken, by integrating the protrusions with the main body.Furthermore, the objective of the present invention is to provide a condom that will not harm the human body even if the protrusions are broken, by inflating the protrusions with air or a safe gas.

[0005] In order to solve the above problems, the present invention has the following configuration: A condom that is worn on a man's penis, characterized in that it has a tip and a cylindrical portion formed by a thin covering that covers the penis, and that the cylindrical portion has protrusions on the side thereof that contain air or other gas.

[0006] In the condom, the protrusions filled with air or other gas are characterized by containing hollow bodies having semicircular cross sections.

[0007] In addition, the condom is characterized in that the protrusions are linear.

[0008] The condom of the present invention has protrusions on its sides to enhance sexual pleasure, but these protrusions are hollow, and the pressure of the gas, such as air, allows the condom to maintain its shape. This effectively provides a condom that stimulates sexual sensations during sexual intercourse while minimizing the sensation of a foreign body. Furthermore, because the protrusions are integrated with the condom body, they do not remain inside the human body even if they are torn. Even if the protrusions are damaged, only air or harmless gas is released, making the condom safe. Furthermore, by adjusting the amount of air or pressure contained in the hollow, the condom can be adjusted to achieve the appropriate firmness and elasticity.

[0009] 1 shows a cross-sectional view of a condom; 2 shows an explanatory diagram illustrating a condom manufacturing image; 3 shows a cross-sectional view of a condom according to another embodiment; 4 shows a cross-sectional view of a condom according to a second embodiment; and 5 shows a cross-sectional view of a condom according to a third embodiment.

[0010] Hereinafter, embodiments of the invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 represents a cross-sectional view of a condom formed as one embodiment of the present invention. Condom 1 has a main body made of a thin, thick covering consisting of a cylindrical portion 2 that covers the penis and a tip portion 3, with an opening 4 at the end through which the penis is inserted. Note that the thickness of the main body of condom 1 shown in FIG. 1 is exaggerated by hatching for the purpose of illustration, but in reality it is a thin, latex or silicone covering with a thickness of approximately 0.01 to 0.03 mm. This is also true for FIGS. 2 and 3, which will be described below.

[0011] Condom 1 has protrusions 5 that protrude from the side of cylindrical portion 2 toward the surface. Inside protrusions 5, there are hollow portions 6 that are filled with air or a gas that is harmless to the human body. The covering that forms the outer shell of protrusions 5 is made of the same material as cylindrical portion 2 and is formed to a similar thickness. Protrusions 5 are formed at the same time as molding condom 1. Hollow portions 6 inside protrusions 5 are formed from a thin covering that is strong and highly elastic, just like the main body, so they have a moderate degree of flexibility while maintaining the rigidity required to maintain the shape of a protrusion.

[0012] Figure 2 shows an example of a method for manufacturing a condom 1 with protrusions 5. A typical condom is made by dipping a mold shaped like a penis into a container filled with liquid latex or silicone, which is the molding material, and then plasticizing it with heat to form a thin film coating.

[0013] In this embodiment, a mold 10 made of metal, glass, or the like is dipped into a container filled with molding material to attach the molding material, and then a molding material containing small air bubbles is attached. One method for attaching small air bubbles is to intermittently inject air from a nozzle 12 into a nozzle 11 that ejects molding material 14, thereby incorporating air bubbles 13 into the molding material 14, thereby ejecting small bubble- or balloon-shaped molding material 14. Since the molding material attached to the side of the condom 1 after dipping has not yet hardened, it adheres to and becomes integrated with the molding material 14 containing the air bubbles. The entire condom is then heated to decompose, forming a condom 1 with protrusions 5 that retain their shape due to the air bubbles.

[0014] The size of the protrusions 5 can be determined by adjusting the amount of molding material 14 discharged from the nozzle 11 and the amount of air to be enclosed. The number of protrusions 5 does not need to be limited to one, and multiple protrusions 5 may be formed. Instead of enclosed air, a foamable material that generates gas may be added to the molding material 14 to foam the material during thermoplasticity, and spaces may be created by the foamed gas.

[0015] [Second Embodiment] Figure 3 is an explanatory diagram of another example of a condom 100 with protrusions. The condom 100 has a thin-walled main body composed of a cylindrical portion 102 that covers the penis and a distal portion 103, with an opening 104 at the distal end for inserting the penis. The main body has a double structure consisting of an inner layer 107 and an outer layer 108, which are bonded together with a strength that prevents them from peeling during use. A small gas bag 106 is placed between the inner layer 107 and the outer layer 108 during manufacturing as a hollow body that forms the protrusions 105. The inner layer 107 and the outer layer 108 are bonded together with the gas bag 106 inside. The gas bag 106 is filled with air or another gas that is safe for the human body, and in this embodiment, it is formed as a hollow hemisphere with a semicircular cross section. The gas bag 106 is integrated with a main body portion consisting of an inner layer 107 and an outer layer 108, so that the gas bag 106 will not separate from the main body portion. The elasticity and hardness of the protrusions 105 can be adjusted by adjusting the amount or pressure of the gas contained in the gas bag 106. When selling an actual product, it is possible to manufacture products in which the elasticity and hardness of the protrusions 105 are adjusted to several levels, such as soft, medium, hard, and extremely hard, so that users can select and purchase them.

[0016] [Third Embodiment] Figure 4 is an explanatory diagram of another example of a condom 200 with protrusions. The condom 200 has a thin-walled main body composed of a cylindrical portion 202 that covers the penis and a distal portion 203, with an opening 204 at the distal end for inserting the penis. The main body has a double structure consisting of an inner layer 207 and an outer layer 208, which are bonded to each other with a strength that prevents them from peeling during use. A small, elongated gas bag (not shown) is placed between the inner layer 207 and the outer layer 208 during manufacturing. By bonding the inner layer 207 and the outer layer 208 with the gas bag in between, linear protrusions 205 are formed on the main body surface. In this example, three wavy linear protrusions 205 approximately several centimeters long are provided in parallel. The shape and number of the linear protrusions are merely examples; they may be straight or have other shapes, and are not limited to the number shown.

[0017] [Fourth Embodiment] Figure 5 is an explanatory diagram of another example of a condom 300 with protrusions. The condom 300 has a thin-walled main body composed of a cylindrical portion 302 that covers the penis and a distal portion 303, with an opening 304 at the distal end for inserting the penis. The main body has a double structure consisting of an inner layer 307 and an outer layer 308, which are bonded to each other with a strength that prevents them from peeling during use. A small, elongated gas bag (not shown) is placed between the inner layer 307 and the outer layer 308 during manufacturing. By bonding the inner layer 307 and the outer layer 308 with the gas bag in between, ring-shaped linear protrusions 305 are formed on the surface of the main body. In this example, one ring-shaped linear protrusion 305 is provided, but the number of linear protrusions 305 is merely an example and is not limited to the number shown. Furthermore, the ring-shaped linear protrusions 305 are provided continuously around the entire circumference, but they may also be provided intermittently, and the shape may not be linear but may be formed as a wavy linear protrusion as shown in FIG.

[0018] As explained above, the condom of the present invention is characterized by being very flexible and having protrusions that do not cause a foreign body sensation. Furthermore, although several embodiments have been shown, these can be combined in any way without departing from the scope of the claims.

[0019] The present invention can be used in condoms and devices for sexually stimulating the genitals.

[0020] 1 Condom 2 Cylindrical part 3 Tip part 4 Opening 5 Protrusion 6 Space

Claims

1. A condom that is worn on a man's penis, characterized in that it has a tip and a cylindrical part formed by a thin covering that covers the penis, and that the cylindrical part has protrusions on the side that contain air or other gas.

2. The condom according to claim 1, wherein the projections filled with air or other gas contain hollow bodies having semicircular cross sections.

3. A condom according to claim 1 or claim 2, characterized in that the protrusions are linear.

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