KR102507132B1 - Armrest assembly for chair - Google Patents

Abstract

In an armrest assembly provided on a chair so that a seated user can rest his or her arms, the armrest assembly according to one embodiment of the present invention comprises: a rotating body part rotatably connected to the side of a chair and comprising a rotating connection part that forms an internal mounting space and an arm holder part connected to the upper end of the rotating connection part to provide a space for the user to place the arm; a tilting part rotatably connected to one end of the rotating connection part and defining a space in which the lower body of the user seated on the chair can move; a lever part mounted on the rotating body part and rotating the rotating connection part or the tilting part by an external force applied by the user; a first operating part accommodated in the mounting space and rotating the tilting part by an external force applied to the lever part through the lever part and the tilting part; and a second operating part accommodated in the mounting space and rotating the rotating connection part by an external force applied to the lever part through the lever part and the rotating connection part. Accordingly, the armrest assembly improves user convenience.

Description

Armrest assembly {ARMREST ASSEMBLY FOR CHAIR}

The present invention relates to an armrest assembly, and more particularly, to an armrest assembly provided in a chair and capable of resting an arm of a seated user.

In modern society, office workers working in offices and students sitting at desks studying are spending more time sitting in chairs. Various functional chairs to provide maximum comfort are being developed and supplied.

In general, a chair includes a seat that supports the user's buttock, a leg installed on the bottom of the seat, a backrest installed at the rear of the seat to support the user's waist (lumbar spine) and back, and a support for supporting the backrest. And, it consists of armrests installed on both sides of the seat to support the user's arms and a headrest installed on the upper part of the backrest to support the user's head,

The backrest is made of a flexible or elastic material such as plastic or cloth to support the back of the seated person and at the same time to be flexibly bent backwards at a certain angle so as to comfortably support the arms of the user sitting on the seat. Various chairs are being developed to increase user convenience, such as changing the height and position of armrests.

The armrest of a conventional chair is designed to fix the position of the armrest by a separate fixing means whenever the position of the armrest is adjusted, so it is very cumbersome to change the position of the armrest and the number of parts increases, resulting in poor assembly.

Korean Patent Registration No. 10-2356354

An object of the present invention is to provide an armrest assembly that is provided on a chair and allows a seated user to rest their arms.

An armrest assembly according to an embodiment of the present invention, in the armrest assembly provided in a chair and capable of resting an arm of a seated user, is rotatably connected to a side end of the chair and forms a mounting space therein. A pivoting body part having a pivoting connection part and an arm support part connected to the upper end of the pivoting connection part to provide a space for the user to hold an arm, connected to one end of the pivoting connection part so as to be able to rotate, and seated in a chair A tilting part defining a space in which the user's lower body can move, a lever part mounted on the pivoting main body and rotating the pivoting connection part or the tilting part by an external force applied by the user, accommodated in the mounting space, and the lever A first operation unit for rotating the tilting unit by an external force applied to the lever unit via the unit and the tilting unit and accommodated in the mounting space, and applied to the lever unit via the lever unit and the pivot connection unit and a second operating unit for rotating the rotational connection unit by an applied external force, wherein the tilting unit is moved from a first position horizontal to the rotational connection unit to a second position folded from the rotation connection unit by an external force applied to the lever unit. is rotated, and the pivot connection part is higher than the first height at a third position located at a first height from the bottom surface by an external force applied to the lever part in a state where the tilting part is located at the second position. It can be moved to position 4.

The lever unit of the armrest assembly according to an embodiment of the present invention includes an external force applying unit to which an external force applied by a user is input and a lever operating unit connected to the external force applying unit and interlocked according to the movement of the external force applying unit. The first operating unit is connected to the lever operating unit and rotates according to the positional movement of the first driving bar while being connected to the first driving bar interlocked with the positional movement of the lever operating unit and the first driving bar. The tilting part may be rotated from the first position to the second position according to the rotation of the link part while being connected to the link part.

The link portion of the armrest assembly according to an embodiment of the present invention, a circular disc portion, a first link piece protruding from one side of the disc portion, and one side are riveted to the end of the first link piece to be rotatable, and the other side is riveted. The side has a second link piece connected to the tilting part, and the first drive bar is rotatably connected to a first link shaft different from the rotation axis of the disc unit, and the disc according to the positional movement of the lever operating unit. The tilting part is rotated according to the rotation of the disc part, and the first operating part is elastic according to the positional movement of the disc part while being connected to the limit switch part and the second link axis different from the rotation axis of the disc part. A deformable elastic part is provided, wherein the elastic part is elastically deformed according to the rotation of the first driving bar to the disk part, and when the external force caused by the first driving bar is released, a restoring force according to the elastic deformation causes the second driving bar to be elastically deformed. By pressing the link shaft, rotation of the disc portion may be limited.

The second operating unit of the armrest assembly according to an embodiment of the present invention, while being disposed adjacent to the lever operating unit, is linked to the striker unit according to the positional movement of the lever operating unit, while being connected to the striker unit, A second drive bar interlocked with the movement of the striker unit, a first hook portion that is connected to the second drive bar and rotated based on a first hook shaft according to the movement of the second drive bar while being connected to the second drive bar, and While being engaged, the second hook part rotates based on the second hook axis according to the rotation of the first hook part, the rotation bar that mediates the second hook part and the rotation connection part, and the rotation bar connected to each other by hydraulic pressure or pneumatic pressure. An extension and contraction part that is stretched and rotates the rotation bar, and the second hook part engages with the first hook part to limit the extension of the extension and contraction in a state in which positional movement is restricted, so that the pivot connection unit is positioned at the third position. , and the engagement is released according to the rotation of the first hook portion so that the expansion and contraction portion is stretched, so that the pivot connection portion can be moved from the third position to the fourth position.

The first driving bar of the armrest assembly according to an embodiment of the present invention includes a locking jaw portion forming a space recessed toward the lever portion, and the striker portion forms a locking portion protruding toward the tilting portion, The locking part is disposed so as not to face the locking jaw when the rotation connecting part is located at the third position, and is disposed on a movement path of the locking jaw when the rotation connecting part is located at the fourth position. , By limiting the positional movement of the first driving bar, it is possible to limit the rotation of the tilting unit.

According to the present invention, it is possible to provide an armrest provided on a chair to define a user's lower body space or to hold a user's arm.

In addition, the user's convenience is enhanced by automatically rotating the tilting part or the armrest through the lever provided in the armrest.

1 is a schematic perspective view showing a chair frame in which an armrest assembly according to an embodiment of the present invention is installed.
2 to 4 are schematic views for explaining the operation by the lever unit of the armrest assembly according to one embodiment of the present invention.
Figure 5 is a schematic diagram for explaining the internal structure of the armrest assembly according to an embodiment of the present invention.
6 is a schematic diagram for explaining the operation of part A of FIG. 5;
Figure 7 is a schematic diagram for explaining the operation of part B of Figure 5;
8 is a schematic view illustrating a limit switch unit of an armrest assembly according to an embodiment of the present invention.
9 is a schematic diagram for explaining part D of FIG. 4;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention may add, change, delete, etc. other elements within the scope of the same spirit, through other degenerative inventions or the present invention. Other embodiments included within the scope of the inventive idea can be easily proposed, but it will also be said to be included within the scope of the inventive concept.

In addition, components having the same function within the scope of the same idea appearing in the drawings of each embodiment are described using the same reference numerals.

1 is a schematic perspective view showing a chair frame in which an armrest assembly according to an embodiment of the present invention is installed, and FIGS. 2 to 4 explain an operation by a lever unit of the armrest assembly according to an embodiment of the present invention. It is a schematic diagram for

5 is a schematic diagram for explaining the internal structure of an armrest assembly according to an embodiment of the present invention.

Referring to FIGS. 1 to 5 , an armrest assembly 1 according to an embodiment of the present invention may be a device that is provided on a chair and allows a seated user to hold an arm.

The armrest assembly 1 of the present invention may include a rotating body part 10, a tilting part 20, a lever part 30, a first operating part 40 and a second operating part 50. .

The pivoting body part 10 is rotatably connected to the side end of the chair frame C, and is connected to the pivoting connection part 11 forming a mounting space therein and the upper end of the pivoting connection part 11 so that the user can An arm support part 13 providing a space for holding an arm may be provided.

The tilting part 20 is rotatably connected to one end of the pivoting connecting part 11, and can define a space in which the lower body of a user seated on a chair can move.

The lever part 30 is mounted on the pivoting body part 10 and can rotate the pivoting connecting part 11 or the tilting part 20 by an external force applied by a user.

The lever unit 30 is connected to the external force application unit 31 to which the external force applied by the user is input and the external force application unit 31 is connected to the external force application unit 31 in accordance with the movement of the position of the lever operation. A portion 33 may be provided.

The first operating part 40 is accommodated in the mounting space, and the tilting part ( 20) can be rotated.

The second operating unit 50 is accommodated in the mounting space, and the pivoting connection part ( 11) can be rotated.

The tilting part 20, by the external force applied to the lever part 30, a second position folded from the pivoting connecting part 11 in a first position horizontal to the pivoting connecting part 11 (see FIG. 2) (See FIG. 3).

The pivoting connection part 11 is located at a first height from the bottom surface by an external force applied to the lever part 30 in a state where the tilting part 20 is located at the second position, in a third position ( 3) to a fourth position (see FIG. 4) located at a second height higher than the first height.

Here, the rotation connection part 11 may be restricted from being moved from the third position to the fourth position in a state where the tilting part 20 is located at the first position.

Positional movement of the tilting part 20 from the second position to the first position in a state in which the pivot connection part 11 is located at the fourth position may be restricted.

In addition, the tilting unit 20 may be moved to the first position by an external force directly applied by the user in a state located at the second position.

In summary, when the tilting part 20 is located at the first position and the pivot connection part 11 is located at the third position, the user pulls the lever part 30 to move the tilting part 20 is moved from the first position to the second position, and by pulling the lever part 30 again, the pivot connection part 11 can be moved from the third position to the fourth position.

In addition, when the tilting part 20 is located at the second position and the pivot connection part 11 is located at the fourth position, the user directly presses the pivot connection part 11 downward to the third position. After positioning, the tilting part 20 may be directly moved to move from the second position to the first position.

6 is a schematic diagram for explaining the operation of part A of FIG. 5, and FIG. 7 is a schematic diagram for explaining the operation of part B of FIG.

8 is a schematic diagram for explaining the limit switch of the armrest assembly according to an embodiment of the present invention, and FIG. 9 is a schematic diagram for explaining part D of FIG. 4 .

6 to 9, the first operating unit 40 of the armrest assembly 1 according to an embodiment of the present invention is connected to the lever operating unit 33, while the lever operating unit 33 ) Provided with a first driving bar 41 interlocked according to the positional movement of the first driving bar 41 and a link part 43 that rotates according to the positional movement of the first driving bar 41 while being connected to the first driving bar 41 can do.

The tilting part 20 may rotate from the first position to the second position according to the rotation of the link part 43 while being connected to the link part 43 .

The link part 43 may include a disc part 431 , a first link piece 433 and a second link piece 435 .

The disc portion 431 may be formed in a circular shape.

The tilting part 20 may rotate according to the rotation of the disk part 431 .

The first link piece 433 may protrude from one side of the disc portion 431 .

The second link piece 435 has one side rivet (R) coupled to the end of the first link piece 433 so as to be able to rotate, and the other side can be connected to the tilting part 20 .

The first driving bar 41 is rotatably connected to a first link shaft L1 different from the rotation shaft S of the disc portion 431, according to the positional movement of the lever operating unit 33. The disc portion 431 may be rotated.

When the disc portion 431 is rotated counterclockwise with respect to the pivot shaft S by the first driving bar 41, the first link piece 433 is also interlocked and rotated. At this time, the second link piece 435 is rotated based on the rivet R, and the rivet R may move along the coupling hole of the second link piece 435.

As the second link piece 435 rotates, the tilting part 20 rotates clockwise, and moves from the first position to the second position.

The first operating unit 40 may include a limit switch unit 45 and an elastic unit 47.

The limit switch unit 45 can turn on/off the expansion and contraction unit 56, which will be described later, when it is implemented by electric power.

The limit operation unit 49 may be composed of an operation main body 491 and an operation button unit 492 moved in position by the limit switch unit 45 while being connected to the operation main body 491 .

Specifically, the limit switch unit 45 may be connected to and interlocked with the rotation shaft S of the disk unit 431, and may move the operation button unit 492 disposed adjacent to it.

The elastic part 47 may be elastically deformed according to the positional movement of the disc part 431 while being connected to the second link shaft L2 different from the rotation axis S of the disc part 431 .

The elastic part 47 is elastically deformed according to the rotation of the first driving bar 41 to the disk part 431, and when the external force by the first driving bar 41 is released, the elastic part 47 is elastically deformed. By pressing the second link shaft (L2) by the restoring force according to, it is possible to limit the rotation of the disk portion 431.

Specifically, the elastic part 47 presses the second link shaft L2 when the tilting part 20 is located at the first position, so that when an external force equal to or greater than a predetermined external force is not applied, the second link shaft 20 is not applied. Rotation of the link shaft (L2) is restricted so that the tilting part (20) is maintained at the first position, and when the tilting part (20) is located at the second position, the second link shaft (L2) By pressing, the rotation of the second link shaft L2 is restricted when an external force equal to or greater than a predetermined external force is not applied, so that the tilting part 20 is maintained at the second position.

The second operating unit 50 according to an embodiment of the present invention includes a striker unit 51, a second driving bar 52, a first hook unit 53, a second hook unit 54, and a rotation bar (55) and a stretchable portion (56).

The striker unit 51 may be interlocked according to the positional movement of the lever operation unit 33 while being disposed adjacent to the lever operation unit 33 .

The second driving bar 52 may be interlocked with the striker unit 51 as the position of the striker unit 51 moves.

The first hook part 53 may be rotated based on the first hook axis H1 according to the movement of the second driving bar 52 while being connected to the second driving bar 52 .

The second hook part 54 may be rotated based on the second hook axis H2 according to the rotation of the first hook part 53 while being engaged with the first hook part 53 .

The pivot bar 55 may mediate the second hook part 54 and the pivot connection part 11 .

The extension and contraction part 56 is connected to the rotation bar 55 and is stretched and contracted by electric, hydraulic, or pneumatic power to rotate the rotation bar 55 .

The second hook part 54 engages with the first hook part 53 to limit the extension of the elastic part 56 in a state in which positional movement is restricted, so that the rotational connection part 11 is connected to the third hook part 11. position can be placed.

In addition, the second hook part 54 is disengaged according to the rotation of the first hook part 53 so that the expansion and contraction part 56 is stretched, so that the pivot connection part 11 It may be moved from the third position to the fourth position.

Meanwhile, the first driving bar 41 may include a locking jaw portion 411 forming a space recessed toward the lever portion 30 .

The striker part 51 may form a hooking part 511 protruding toward the tilting part 20 .

The hooking part 511 may be disposed so as not to face the hooking jaw part 411 when the pivot connection part 11 is located in the third position.

In addition, the hooking part 511 is disposed on the movement path of the hooking shoulder part 411 when the pivot connection part 11 is located at the fourth position, and the position of the first driving bar 41 By limiting the movement, rotation of the tilting unit 20 may be limited.

Specifically, the positional movement of the tilting part 20 from the second position to the first position in a state in which the pivot connection part 11 is located at the fourth position may be restricted.

In the above, the configuration and characteristics of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It is apparent to those skilled in the art, and therefore such changes or modifications are intended to fall within the scope of the appended claims.

1: armrest assembly 10: rotating body
11: rotation connection part 13: arm support part
20: tilting part 30: lever part
31: external force application unit 33: lever operation unit
40: first operating unit 41: first driving bar
43: link part 45: limit switch part
50: second operating unit 51: striker unit
52: second drive bar 53: first hook part
54: second hook part 55: rotation bar
56: expansion and contraction

Claims (5)

In the armrest assembly provided in a chair and allowing a seated user to rest an arm,
A pivoting body part having a pivoting connection part connected to the side end of the chair to form a mounting space therein and an arm support part connected to the upper end of the pivot connection part to provide a space for a user to hold an arm;
a tilting unit that is rotatably connected to one end of the rotation connection unit and defines a space in which the lower body of a user seated on a chair can move;
a lever unit mounted on the pivoting main body and rotating the pivoting connecting part or the tilting part by an external force applied by a user;
a first operating unit accommodated in the mounting space and rotating the tilting unit by an external force applied to the lever unit through the medium of the lever unit and the tilting unit; and
A second operating unit accommodated in the mounting space and rotating the rotational connection unit by an external force applied to the lever unit via the lever unit and the rotation connection unit,
The tilting part,
By an external force applied to the lever part, it is rotated from a first position horizontal to the pivot connection part to a folded second position from the pivot connection part,
The rotation connection part,
A fourth position located at a second height higher than the first height from a third position located at a first height from the floor surface by an external force applied to the lever unit in a state in which the tilting unit is located at the second position is moved to
The lever part,
An external force application unit in which the external force applied by the user is input, and
A lever operation unit connected to the external force application unit and interlocked according to the positional movement of the external force application unit,
The first operating unit,
A first driving bar connected to the lever operating unit and interlocked according to the movement of the lever operating unit, and
A link portion that is rotated according to the movement of the first driving bar while being connected to the first driving bar,
The tilting part,
An armrest assembly, characterized in that it is rotated from the first position to the second position according to the rotation of the link part while being connected to the link part. delete According to claim 1,
The link part,
circular disc,
A first link piece protruding from one side of the disc portion and
One side is riveted to the end of the first link piece and is rotatable, and the other side has a second link piece connected to the tilting part,
The first driving bar rotates the disc portion according to the positional movement of the lever operation unit while being rotatably connected to a first link shaft different from the rotation axis of the disc portion,
The tilting part is rotated according to the rotation of the disc part,
The first operating unit,
An elastic part that is elastically deformed according to the positional movement of the disc part while being connected to a second link shaft different from the rotation axis of the disc part,
The elastic part,
It is elastically deformed according to the rotation of the first drive bar to the disc portion, and when the external force by the first drive bar is released, the rotation of the disc portion is limited by pressing the second link shaft by the restoring force according to the elastic deformation. Armrest assembly, characterized in that to be. According to claim 1,
The second operating unit,
A striker unit disposed adjacent to the lever operation unit and interlocked according to the movement of the lever operation unit;
A second driving bar connected to the striker unit and interlocked according to the movement of the striker unit;
A first hook portion that is connected to the second driving bar and is rotated based on a first hook axis according to the movement of the second driving bar;
A second hook portion rotated based on a second hook axis according to the rotation of the first hook portion while being engaged with the first hook portion;
A rotation bar that mediates the second hook portion and the rotation connection portion, and
An extension and contraction unit that is stretched and contracted by electric, hydraulic, or pneumatic pressure while connected to the rotation bar to rotate the rotation bar,
The second hook part,
In a state in which positional movement is limited by being engaged with the first hook part, the extension of the elastic part is limited so that the pivot connection part is located in the third position,
The armrest assembly according to claim 1 , wherein the rotation connection part is moved from the third position to the fourth position by releasing the engagement according to the rotation of the first hook part so that the expansion and contraction part is stretched. According to claim 4,
The first driving bar has a locking jaw portion forming a space recessed toward the lever portion,
The striker part,
Forming a hooking portion protruding toward the tilting portion,
The hanging part,
When the rotation connection part is located in the third position, it is disposed so as not to face the locking jaw part,
Armrest, characterized in that, when the rotation connection unit is located at the fourth position, the rotation of the tilting unit is limited by being disposed on the movement path of the locking jaw unit and limiting the positional movement of the first driving bar. assembly.

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