JP3048581U - Dish cap for chair - Google Patents

Abstract

(57) [Summary] [Problem] A device that can use a chair with peace of mind even on a hot carpet. SOLUTION: The ground surface of a conventional chair cap is shaped like a dish to make it slippery and to reduce the weight per unit area applied to the hot carpet.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to the shape of a cap that fits into the ground of a chair leg to protect the floor.

[0002]

[Prior art]

 In the past, this type of cap has been used by fitting a cap-shaped one that matches the shape of the chair leg into the tip of the chair leg.

[0003]

[Problems to be solved by the invention]

 When using a chair with a conventional chair cap set on a carpet, the carpet fabric is naturally damaged earlier than when the chair is not used. In particular, if this chair is used with a hot carpet laid, the chair sinks significantly due to the weight of the occupant, which may cause the hot carpet to malfunction. For this reason, hot carpet manufacturers have specified that they do not use well-moving chairs as a precaution when using hot carpets. This makes it difficult to use a chair with hot carpets in the flooring.

[0004] An object of the present invention is to provide a device that allows a chair to be used safely on a hot carpet.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the dish cap for a chair according to the present invention is designed such that the ground surface of the leg cap of the chair is attached to a slippery circular or square dish-shaped portion and the tip of the chair leg. The cap part to be fitted was integrated or bonded into one. As described above, the area of the grounding portion of the chair leg is increased by forming the grounding portion of the conventional chair cap into a circular or square dish shape. Naturally, as in the present invention, if the area of the contact surface of the chair cap is increased, the weight per unit area of the contact surface received from the weight of the chair can be reduced.

[0006]

[Embodiment]

 An embodiment will be described with reference to the drawings. In FIG. 1, a plate-shaped portion 1 and a cap-shaped portion 2 are provided. The cap-shaped part 2 is used while it is fitted in the leg 3 of the chair.

The dish-shaped part 1 has a slippery structure by widening the ground contact surface of a cap fitted to the tip of the leg 3 of the chair and forming the dish. The shape of the dish can be round or square, matching the shape of the tip of the chair leg. The material is a somewhat hard resin, and it is better if the surface of the ground contact surface is coated with a fluoro resin to make it slippery. In addition, the periphery of the dish shall be of a ship bottom type to prevent snagging during sliding. The size of the dish portion is optimally about twice the dimension of the grounding surface of the conventional cap, that is, if the cap has a circular shape, it is about twice the diameter, about 6 cm. In the case of a rectangular shape, the length of one side is optimally about 6 cm. Thus, by doubling the size of the ground contact surface, the area is quadrupled, and the weight per unit area is reduced to a quarter. Assuming that the weight of a person sitting on a chair is 60 kg, the weight of one leg of a four-legged chair is 15 kg. If a conventional cap is used and its diameter is 3 cm, the weight per unit area is about 1.5 kg. Using the dish-type cap for chairs of the present invention, if the diameter is doubled to 6 cm, the weight per unit area applied to one leg is about 0.4 kg, which is very light.

The cap-shaped part 2 is located at the center of the dish-shaped part 1 and is round or square so that it can be easily fitted to the tip of the chair leg. The material is preferably made of a soft resin or rubber, and is made integrally with the dish-shaped portion 1 or by bonding 1 and 2 together.

[Effect of the invention]

 As described above, by using the dish-type cap for a chair of the present invention, the influence of the grounding surface of the chair leg on the hot carpet can be reduced. If the weight per unit area that the chair gives to the hot carpet is reduced, the chair slides well on the hot carpet and the chair can be used with confidence.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dish-type cap for a chair according to the present invention.

FIG. 2 is an elevation view of the dish-type cap for a chair according to the present invention;

FIG. 3 is a view showing a selection of a dish-type cap for a chair according to the present invention;

[Explanation of symbols]

 1 The dish portion of the dish cap for chairs. 2 Cap part of the dish cap for a chair. 3 The tip of the chair leg.

Claims (1)

[Utility model registration claims] A grounding surface of a leg cap of a chair has a slippery circular or square dish-shaped portion, and a portion of a cap to be fitted to the tip of a chair leg is integrated or adhered into one. Dish-shaped cap for chair.