Reversing Assembly for Office Chair Armrest

Abstract

A reversing assembly for an office chair armrest is provided. Therein, an armrest is provided atop with a positioning element, so that the armrest, by combination of a fastening element and the positioning element, is pivotally positioned between the fastening element and the positioning element. The armrest is provided with a ball to be resiliently laid into one of positioning holes formed on the positioning element. Thereby, the armrest, when posed forward, is allowed to swing in both directions in a predetermined range, and the armrest is also allowed to rotate 180 degrees so that the reversed armrest is absent to touch the desk-top, and thereby the seat and legs of the chair can be received under the desk-top.

Description

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to office chair armrests, and more particularly to a reversing assembly for an office chair armrest. It allows an armrest to not only be adjusted by rotating to different angles but also be rotated backward and positioned at a reversed position, so as for the armrest not to hinder the seat of the chair with the armrest from being stored under a desk-top.

2. Description of Related Art

While many armrests for office chairs are immovably fixed, some of them are allowed with height adjustment, forward and backward shift and limited swing so that users of different heights can have their arms best and comfortably supported in virtue of the adjustability of these armrests.

However, in the conventional design, no matter the height the armrests are positioned, the armrests always touch a desk-top whereunder the seat of the chair otherwise to be stored. Consequently, the chair hindered from being properly stored under the table can obstruct traffic in a space having it and cause the space to look cluttered.

SUMMARY OF THE INVENTION

For improving the problem of the conventional chair caused by the armrests that hinders the seat of the chair from being stored under a desk-top, the present invention provides a reversing assembly for an office chair armrest allowing the armrest of a chair with reversion so as to clear of obstruction look in a clutter above the seat, thereby allowing the seat to be stored under the desk-top.

In order to solve the technical problem, the present invention adopts the technical scheme as below. A positioning element is provided atop an armrest mount, and an armrest is positioned by combination of a fastening element and the positioning element, so that the armrest is pivotally positioned between the fastening element and the positioning element. Meantime, the armrest is provided with a ball to be resiliently received in one of positioning holes formed at predetermined sites on the positioning element.

Hence, in virtue of the forgoing structure of the present invention, the armrest, when posed forward, is allowed to swing in both directions in a predetermined range, and the armrest is also allowed to rotate 180 degrees so that the reversed armrest is absent to touch the desk-top, and thereby the seat and legs of the chair can be received under the desk-top, leaving the space roomier and cleaner.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention as well as a preferred mode of use, further objectives and advantages thereof will be best understood by reference to the following detailed description of an illustrative embodiment when acquire in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic exploded view of an armrest of the present invention;

FIG. 3 is another schematic exploded view of the armrest of the present invention;

FIG. 4 is a schematic lateral sectional view of the armrest of the present invention;

FIG. 5 is an enlarged view of Part A of FIG. 4;

FIG. 6 is a top view of the armrest of the present invention showing the armrest swinging;

FIG. 7 is a schematic lateral sectional view of the armrest of the present invention showing the armrest reversed; and

FIG. 8 is an enlarged view of Part B of FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIGS. 1 through 5, in the present invention, a pair of armrest mounts 1 is provided at two laterals of an office chair. On each of the armrest mounts 1, an armrest 2 assembled with an armrest cover 23 is mounted. A positioning element 3 is arranged atop the armrest mount 1 and has centrally a projecting pivot 31. Around the positioning element 3, a turning space 32 of a predetermined range is provided and there are two retaining portions 33, 34 arranged at two opposite ends of the turning space 32. At a place slightly outer than where the armrest 2 and the armrest mount 1 are coupled, an abutting portion 21 is provided to be projecting into the turning space 32. A pivot hole 20 allowing the pivot 31 to pass is formed at a center of an area where the armrest 2 and the armrest mount 1 are coupled, so that the pivot 31 passing through the pivot hole 20 is coupled with a fastening element 4, thereby positioning the armrest 2 between the positioning element 3 and the fastening element 4, and allowing the armrest 2 to rotate against the pivot 31.

Moreover, the fastening element 4 has positioning holes 40 formed at front and rear sides of a lower surface thereof Meantime, the armrest 2, at a place corresponding to the fastening element 4, is formed with a blind hole 22. The blind hole 22 receives successively a spring 5 and a ball 6. Since the spring 5 normally props up the ball 6, the ball 6 can resiliently engage with any of the positioning holes 40, thereby positioning the armrest 2 that is posed at a desired angle.

Thereby, referring to FIG. 6 as well, when posed forward for normal use, the armrest 2 is allowed to swing inward or outward and then the ball 6 can be received in different positioning holes 40 to position the armrest 2 at an forward, yet, inward or outward bias position. When the armrest 2 rotates inward, the abutting portion 21 will eventually abuts against the retaining portion 33 of the positioning element 3 and stops the armrest 2 further inward rotation. On the other hand, when the armrest 2 rotates outward 180 degrees, the abutting portion 21 can also abut against the retaining portion 34 of the positioning element 3 while the ball 6 can be received in the positioning hole 40 at the rear side of the fastening element 4. Then, as shown in FIGS. 7 and 8, the reversed armrest 2 is absent from the space above the seat of the chair, so that the seat and legs of the chair can be received under the desk-top, leaving the space where the chair is in roomier and cleaner.

Claims

1. A reversing assembly for an office chair armrest, the armrest being pivotally mounted on an armrest mount, wherein:

the armrest mount is provided atop with a positioning element, which is centrally provided with a projecting pivot, and a fastening element having a lower surface formed with a plurality of positioning holes at two opposite sides is fixed to the pivot; and

the armrest is assembled to the pivot of the positioning element and located between the fastening element, and the fastening element has a ball to be resiliently received in one of the positioning holes formed on the fastening element.

2. The reversing assembly of claim 1, wherein the armrest has a lower surface formed with a raised abutting portion and the positioning element is circled by a turning space of a predetermined range, while the turning space has two retaining portions formed on opposite ends thereof so that the abutting portion of the armrest is allowed to move along the turning space until retained and positioned by one of the retaining portions.