JP7768660B2 - Roller-type clothespins that can be used without damaging fabrics - Google Patents

Description

To provide a clothespin that allows easy removal of laundry, firmly holds laundry, and does not damage the fabric of the laundry.

Conventional rotating roller clothespins include smooth round and oval rollers, as well as serrated roller clothespins.
There are also hexagonal pillars with anti-slip protrusions.

With smooth circular or oval rollers, the contact surface between the roller and the laundry is slippery when the laundry is hung up, so the laundry tends to come off. Increasing the spring's repulsive force helps to hold the laundry in place, but this requires a lot of force to clamp the laundry, and also requires a lot of force to pull the laundry downwards, making it difficult to take it in smoothly.

To prevent slipping, some types of laundry washer have serrated rollers or hexagonal pillars with anti-slip protrusions, which can hold laundry firmly, but they have the major drawback that when pulling downward to take in laundry, the serrated teeth or anti-slip protrusions create resistance and can damage delicate laundry fabrics such as silk.
Japanese Patent Application Laid-Open No. 2007-029683 Japanese Patent Application Laid-Open No. 2021-065255 Publication No. 3238150

Conventional roller clothespins with smooth circular or oval rollers tend to slip easily when laundry is hung on them, resulting in the laundry falling off. Increasing the spring's repulsive force helps hold the laundry, but requires a large force to clamp the laundry and also a large force when pulling downward to retrieve the laundry, making it difficult to retrieve the laundry smoothly. While serrated rollers and roughly hexagonal prisms with anti-slip protrusions can firmly hold laundry, they have the drawback of damaging the fabric when pulling downward to retrieve the laundry, due to the resistance caused by the serrated teeth and anti-slip properties.

To provide a roller type clothespin that can be attached with a slight force when clamping laundry, is hard to come off when drying laundry, and has a roller that rotates smoothly when taking in laundry and is gentle on the fabric of the laundry, in order to solve the problems that conventional roller type clothespins have.

In order to achieve the above object, the present invention provides a polygonal roller having a cross section resembling a petal, which is rotatably attached to the tip of a polygonal roller having a circle with the same diameter as one side of a polygon having three to six vertices at its center, and which is obtained by connecting the outsides of two adjacent circles with an arc of the same diameter.

When the approximately polygonal roller with a petal-like cross section pinches laundry, the convex parts fit snugly into the concave parts of the opposing roller, which are formed of the same arc, and the laundry is firmly held by the concave and convex parts.

The convex parts fit snugly into the concave parts of the roller, and the laundry is held firmly by the concave parts, eliminating the need for anti-slip devices that could damage the fabric of the laundry.

To provide a roller type clothespin that solves the problems of conventional roller type clothespins, can be attached with a slight force when clamping laundry, is hard to come off when drying laundry, and when taking in laundry, the roller rotates smoothly and is gentle on the fabric of the laundry.

1 is a front view of a substantially polygonal roller type clothes peg of the present invention; 1: roller; 2: body; 3: spring; 1: Roller 2: Main body 3: Spring 1 is a schematic diagram of the approximately polygonal roller type clothespin of the present invention when holding laundry. 1: roller 2: body 3: spring 4; laundry 1: Roller 2: Main body 3: Spring This is a drawing example (pentagon) for obtaining a cross-sectional view of a roller-type clothespin having an approximately polygonal prism shape from the polygon of the present invention. Side views of the approximately polygonal prism rollers of the present invention, obtained from trigonal to hexagonal shapes. a1: Approximately hexagonal prism roller a2: Approximately pentagonal prism roller a3: Approximately quadrangular prism roller a4: Approximately triangular prism roller

The roller has a roughly polygonal columnar shape with a petal-like cross section, which is obtained by having a circle with the same diameter as one side of each polygon with each vertex as the center and connecting the outsides of two adjacent circles with an arc of the same diameter, and the roller is placed at the tip of the roller, and the convex parts fit snugly into the concave parts of the rotatably mounted roller, so that the laundry can be firmly held by the concave and convex parts, and no jagged teeth or anti-slip surfaces that may damage the fabric of the laundry are required.

The convex portions fit snugly into the concave portions of each of the approximately polygonal column rollers formed from the three to six polygons, and the laundry can be firmly held by the concave and convex portions.

Claims (1)

A clothespin has a pair of rollers rotatably attached to the tip of the clothespin so that the laundry is clamped between the pair of rollers, and by simply pulling the laundry clamped between the clothespins downward, the rotation of the rollers releases the clamped laundry and allows the laundry to be taken in.The pair of rollers are approximately polygonal prisms with a petal-like cross section, each having a convex circle centered on each vertex of a polygon and having the same diameter as one side of the polygon, and the outsides of two adjacent convex circles are connected by concave arcs of the same diameter as the convex circles.When the laundry is clamped using the spring force of the clothespin, the concave arc of one roller of the pair of opposing rollers fits snugly into the convex circle of the other roller, and the laundry can be firmly held with just a little spring force by the unevenness formed by the concave arcs and convex circles of the pair of rollers.