U.S. patent application number 12/763291 was filed with the patent office on 2011-10-20 for reversing assembly for office chair armrest.
Invention is credited to Tsai Hsuan-Chin.
Application Number | 20110254340 12/763291 |
Document ID | / |
Family ID | 44787697 |
Filed Date | 2011-10-20 |
United States Patent
Application |
20110254340 |
Kind Code |
A1 |
Hsuan-Chin; Tsai |
October 20, 2011 |
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.
Inventors: |
Hsuan-Chin; Tsai; (Chai-Yi
Hsien, TW) |
Family ID: |
44787697 |
Appl. No.: |
12/763291 |
Filed: |
April 20, 2010 |
Current U.S.
Class: |
297/411.31 |
Current CPC
Class: |
A47C 1/0308 20180801;
A47C 1/03 20130101 |
Class at
Publication: |
297/411.31 |
International
Class: |
A47C 7/54 20060101
A47C007/54 |
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.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] 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.
[0003] 2. Description of Related Art
[0004] 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.
[0005] 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
[0006] 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.
[0007] 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.
[0008] 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
[0009] 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:
[0010] FIG. 1 is a schematic perspective view of the present
invention;
[0011] FIG. 2 is a schematic exploded view of an armrest of the
present invention;
[0012] FIG. 3 is another schematic exploded view of the armrest of
the present invention;
[0013] FIG. 4 is a schematic lateral sectional view of the armrest
of the present invention;
[0014] FIG. 5 is an enlarged view of Part A of FIG. 4;
[0015] FIG. 6 is a top view of the armrest of the present invention
showing the armrest swinging;
[0016] FIG. 7 is a schematic lateral sectional view of the armrest
of the present invention showing the armrest reversed; and
[0017] FIG. 8 is an enlarged view of Part B of FIG. 7.
DETAILED DESCRIPTION OF THE INVENTION
[0018] 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.
[0019] 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.
[0020] 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.
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