ES1056273U - Armrest for seat. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Armrest for seat, to be placed on the arm in the form of a seat tube, characterized by being formed by two parts, an outer (3) lightweight and flexible, and a rigid interior (4) and supporting some threads of fixing to the arm of the seat in which it is placed, said inner piece (4) and said outer piece (3) seat, capable of being fixed to each other thanks to the elastic characteristics of the outer piece, arranging a section of the inner piece to less an inner projection of greater width than the body that supports it or fixing groove to the corresponding inner projection of the outer body. (Machine-translation by Google Translate, not legally binding)

Description

Armrest for seat.

There are a number of seats, such as chair seats wheels, seats or armchairs used in large rooms, such as cinematic projection rooms, and in general seats whose arm is formed by a metal tube or other materials configured in such a way that a tube coating on its upper part forming the armrest, normally screwed that allows support with a minimum comfort.

The armrest is usually vulcanized rubber, and in its vulcanization process an insert is placed inside provided with internal threads or a nut holder that allow threading from the bottom of the tube that forms the seat arm of the fastening screws.

This manufacturing involves the use of a large amount of material due to the density of the resulting product, while provides an elasticity that does not reach the degree of deformation enough when the arm support of the person who is use it, as to be comfortable and after a long time of utilization.

It is also desirable to manufacture these armrests. in a simpler way and in a less expensive way, without losing none of the functional characteristics of said arms.

It is therefore the object of this invention to provide a armrests for a seat, such as a wheelchair seat or conventional chair consisting of a tube that forms an arm, that satisfies comfort requirements satisfactorily, advantageous cost and functionality in its configuration and assembly.

In order to illustrate the explanation that will follow, we attach to the present specification, two sheets of drawings, which in three figures represents the essence of the present invention, and in which:

Figure 1 shows an exploded view of the armrest for seat of the invention,

Figure 2 shows a cross-sectional view of the armrest of figure 1 mounted, located on a seat, and

Figure 3 shows a perspective view of a seat with the armrests arranged on the tubes that make up the arms of said seat, mounted on both sides.

The present invention aims at an armrest 2, intended to be placed on a tube that forms an arm 1 of a seat. The armrest 2 has essentially two parts, one first part 3 envelope, which will constitute the arm support of the user, made on the outside with a material such as vinyl ethyl acetate, known as EVA, which provides to the set the characteristics of lightness, formability, desired cost, comfort, and wear resistance, and a second part 4, arranged inside the previous one, which brings together the stiffness and mechanical strength characteristics necessary for to be united

The first of said parts has a hollow 5 inside whose shape matches the shape of the inner piece 4, so that this inner part 4 can be mounted inside the part exterior 3 without the possibility of accidental separation between both.

For this purpose, according to a position of use, the inner hollow 5 of the outer part and similarly the inner insert, present a profile that results from the composition of a rectangle 6 something else wide than tall, and a small rectangle 7 at the top, of wider than the previous one, and protruding by at least one of its sides, leaving a fixing slot 8 on the other. The part bottom of rectangle 6 presents a recess in accordance with the shape of arm 1 on which it is to be placed.

The inner part 4 has a plurality of inner threads, that although they could be formed together with said piece, of according to a preferred embodiment they are placed by means of nuts 9 arranged in recesses 10 arranged in turn in the upper part of said inner piece 4, so that said recesses externally present the shape of the nut, usually  hexagonal.

For fixing, due to the flexibility of the material that conforms the outer covering 3 of the armrest 2, is placed the inner insert 4 in the recess 5 of said coating with the nuts 9 located in the corresponding recesses 10.

Slot 8 in accordance with the corresponding highlight arranged in the recess, as well as the projections greater than one or both sides will maintain a firm fixation, without normal use Allow accidental removal.

For fixing on the seat, simply arrange the corresponding screws from the bottom of about holes arranged in the arm, to reach the nuts already arranged inside the arm through the corresponding through holes that communicate the housings of the nuts with the bottom of the insert 4 of the 2 armrests, squeezing them properly for fixing.

It is of essential importance in the development of this invention the use for coating such a material such as vinyl ethyl acetate (EVA).

Industrial application in the manufacture of armrests for seating.

Claims (3)

1. Armrest for seat, to be placed on the arm in the form of a seat tube, characterized by being formed by two pieces, a light and flexible exterior (3), and a rigid interior (4) that supports threads of fixing to the arm of the seat in which it is located, said inner part (4) and said outer part (3) seat, capable of being fixed to each other thanks to the elastic characteristics of the outer part, providing a section of the inner part to the less an inner projection of greater width than the body that supports it or a groove for fixing to the corresponding internal projection of the outer body. 2. Seat armrest, characterized according to claim 1, because the material of the outer part is ethyl acetate vinyl. 3. Seat armrest, characterized in accordance with claim 1, because the inner part (4) has recesses (10) for the accommodation of fixing nuts (9), as well as through holes that communicate said holes (10) with the outer part.