KR101440918B1 - Armrest for chair - Google Patents

Abstract

The present invention relates to an armrest for a chair configured to comprise a pad portion on which an arm of a user is mounted; a position adjusting portion for adjusting a position by moving the pad portion in the longitudinal and lateral directions; a height adjusting portion which is connected to the lower part of the position adjusting portion, and adjusts the height of the pad portion and the position adjusting portion. Therefore, the present invention can adjust the position and the height front and rear or left and right by moving the pad portion in the vertical longitudinal and lateral directions according to a user body type.

Description

ARMREST FOR CHAIR

The present invention relates to an armrest for a chair, and more particularly, to an armrest for a chair capable of adjusting the height of the armrest and the position of the armrest in the forward, backward and leftward directions according to the body shape of the user.

Generally, the chair is formed as a set having a seat portion on which a user is seated, a leg supporting the seat portion, and a backrest provided on the back of the seat portion and supporting the user's back.

In some cases, a headrest for supporting the head is located on the upper side of the backrest, and armrests are formed on both sides of the seatback or backrest.

In recent years, living in the chair is increasing, so sitting in the chair for a long time, so there is a lot of back and bones to go to the back and back to protect the habit is recommended to sit in the right attitude.

However, even if the right posture is maintained, if the chair does not fit the body of the user, the back and the back, as well as the neck and the leg are burdened, and the disc and the back pain are generated.

As an example of a conventional technique for solving such a problem, there is disclosed a chair for adjusting the height of a seat portion of a chair, the height of an armrest, and the height of a headrest in accordance with a user's body shape.

The present applicant has filed a patent application for a chair capable of adjusting the position of a seat portion, a backrest, an armrest, and a headrest according to the body shape of a user in many of the following Patent Documents 1 and 2.

Patent Document 1 discloses a structure of a chair capable of adjusting the position of the backrest portion in the longitudinal direction and capable of adjusting the height of the backrest and the headrest.

In Patent Document 2, height adjustment means including a fixed frame having a predetermined length, a locking member to be inserted into the fixed frame, and a moving frame to move up and down from the locking member is provided at the upper end of the support base forming the armrest of the chair, And an armrest for a chair that adjusts the height of the armrest in accordance with the height of the armrest.

Korean Patent Registration No. 10-0734166 (published on July 2, 2007) Korean Utility Model Publication No. 20-2010-0008565 (published on August 30, 2010)

However, in the chair according to the prior art including Patent Documents 1 and 2, since only the height of the armrest is adjustable, there is a limitation in using all of the different types of the chair.

Therefore, it is necessary to develop a technique for controlling the position adjustment not only in height of the armrest but also in forward and backward directions and leftward and rightward according to the body shape of the user, such as height, sitting height, arm length, and posture.

It is an object of the present invention to provide an armrest for a chair capable of adjusting the height of the armrest and the position of the armrest in the front, back and left and right directions according to the body shape of the user.

Another object of the present invention is to provide an armrest for a chair which can be easily adjusted by improving the height adjustment structure of the armrest.

In order to accomplish the above object, the armrest for a chair according to the present invention comprises a pad part on which a user's arm is seated, a position adjusting part for adjusting the position by moving the pad part in the front, And a height adjusting unit connected to the pad unit and the height adjusting unit to adjust the height of the pad unit and the position adjusting unit.

The position regulating unit includes a coupling plate coupled to the upper end of the height adjusting unit so as to be movable in the left and right direction, a first plate coupled to the upper portion of the coupling plate so as to be movable forward and backward, And a fixing plate disposed on the upper portion of the second plate and fastened to the coupling plate.

The coupling plate is coupled to the elevating and lowering cylinder of the height adjusting portion and a pair of first moving holes are formed in the coupling plate along the left and right direction so that the pad portion and the first and second plates are movable in the left- .

A second moving hole is formed in the first plate along the forward and backward directions. A third moving hole is formed in the second plate along the forward and backward directions. The position adjusting unit adjusts the pad and the second plate to the second and third And the forward and backward position is adjusted to the second stage by moving along the moving hole.

A pair of protrusions are formed on a bottom surface of the fixing plate so as to be coupled to the coupling plate, and the pair of protrusions sequentially pass through the third and first moving holes of the second and first plates and the coupling plate, respectively Backward and leftward and rightward directions.

The height adjusting unit includes a lifting / lowering cylinder coupled to the connecting portion so as to be able to move up and down. The elevating / lowering cylinder is installed on an upper portion of the lifting / lowering cylinder. A height adjusting bar inserted in the lifting and lowering cylinder and rotating or lifting by the lifting operation of the lever and a locking member for locking or releasing the height adjusting bar according to the rotation state of the height adjusting bar .

The height adjusting portion may further include an engaging member coupled to an upper portion of the lifting cylinder and having the lever movably engaged with the lever, and an elastic member provided between the lever and the engaging member to provide an elastic force to the lever. .

The lever includes a body coupled to the coupling member so as to be able to move up and down, a handle formed to protrude outwardly of the body, and a ring coupled to an upper end of the height adjusting bar to rotate the height adjusting bar, And a spiral protrusion and a rotation protrusion are formed on the upper portion of the ring portion and the height adjusting bar to correspond to each other.

A plurality of adjusting protrusions are formed on the outer circumferential surface of the height adjusting bar, and the locking member is formed with a locking protrusion for locking at least one of the plurality of adjusting protrusions of the height adjusting bar.

As described above, according to the armrest for a chair according to the present invention, the pad portion can be moved in the front, rear, left and right direction and up and down direction according to the user's body shape, and the front and rear left and right positions and heights can be adjusted.

That is, according to the present invention, it is possible to adjust the left and right position of the armrest by moving the pad unit in the left or right direction along the first moving hole.

According to the present invention, it is possible to move the second plate of the pad portion and the position adjusting portion forward or backward along the second and third moving holes to adjust the forward and backward positions in two stages.

Further, according to the present invention, the height adjusting bar of the height adjusting portion can be locked and fixed, or the locking state can be released to adjust the height of the armrest.

Accordingly, according to the present invention, it is possible to work in a state in which the user comfortably places the arm on the armrest by appropriately adjusting the front and rear, left and right positions and height of the armrest according to the body shape of the user.

1 is a perspective view of an armrest for a chair according to a preferred embodiment of the present invention,
2 is an exploded perspective view of the chair armrest shown in Fig. 1, Fig.
FIG. 3 is a partial enlarged exploded perspective view showing the pad portion and the position adjusting portion shown in FIG. 2 at different angles;
FIG. 4 is an exploded perspective view of the height adjusting unit shown in FIG. 2,
5 is a sectional view taken along the line A-A 'shown in FIG. 1,
FIG. 6 is an operational state diagram showing an operation for adjusting a left-right position of an armrest for a chair according to a preferred embodiment of the present invention,
7 is an operational state view showing an operation for adjusting the front-rear direction position of the armrest for a chair,
Figs. 8 and 9 are operation states showing operations for adjusting the height of armrests for a chair. Fig.

Hereinafter, a chair armrest according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an armrest for a chair according to a preferred embodiment of the present invention.

In the drawing, 'F' indicates forward, 'B' indicates rear, 'U' indicates upward, 'D' indicates down, 'L' indicates left, and 'R' indicates right.

As shown in FIG. 1, the chair armrest according to the preferred embodiment of the present invention includes a pad portion 10 on which a user's arm is seated, a pad portion 10 on which a pad portion 10 is moved in a front- And a height adjusting unit 30 connected to a lower portion of the position adjusting unit 20 and adjusting the height of the pad unit 10 and the position adjusting unit 20. [

In addition, the chair armrest according to the preferred embodiment of the present invention may further include a connecting portion 40 connecting the seat portion (not shown) and the height adjusting portion 30.

The structure of the pad portion and the position adjusting portion will be described in detail with reference to FIGS. 2 and 3. FIG.

FIG. 2 is an exploded perspective view of the chair armrest shown in FIG. 1, and FIG. 3 is a partially enlarged exploded perspective view showing the pad portion and the position adjusting portion shown in FIG. 2 at different angles.

As shown in Figs. 2 and 3, the pad portion 10 includes a cover 11 on which a user's arm is seated, a cover 11 having a bottom opened and a substantially hexahedron shape, And may include a pad member 12 to be joined.

A space is formed in the cover 11 so as to engage the second plate 23 of the position adjusting portion 20 to be described below and a coupling protrusion A plurality of coupling grooves 13 may be formed.

The pad member 12 may be made of a material having elasticity so as to provide comfort in a state where a user's arm is seated.

The position adjusting unit 20 connects the pad unit 10 and the height adjusting unit 30 so that the pad unit 10 can be adjusted in the longitudinal direction and the lateral direction.

For this purpose, the position adjusting unit 20 includes an engaging plate 21 movably coupled to the upper end of the height adjusting unit 30 in the left-right direction, A first plate 22 and a second plate 23 movably coupled to the upper portion of the first plate 22 so as to be movable in the forward and backward directions and a second plate 23 fixed to the coupling plate 21, Plate 24 as shown in FIG.

The coupling plate 21 is formed in a substantially disc shape or a rectangular plate shape and can be fastened to the lifting cylinder 31 of the height adjusting portion 30 to be described below by fastening bolts.

A pair of first moving holes 211 may be formed in the coupling plate 21 along the left and right direction so that the pad portion 10 and the first and second plates 22 and 23 can move in the left and right direction .

The lateral movement distance of the pad portion 10 and the first and second plates 22 and 23 can be limited by the width of the first moving hole 211. [

The first plate (22) functions to move in the forward and backward directions while being coupled to the engaging plate (21).

To this end, a second moving hole 221 may be formed in the first plate 22 along the forward and backward directions.

Here, as shown in FIG. 3, the second moving hole 221 may be divided into two or more, or may be formed as one.

Accordingly, the forward movement distance of the first plate 22 can be limited to the length of the second movement hole 221 in a state where the first plate 22 is engaged with the engagement plate 21.

The insertion ribs 222 may protrude upward at both side ends of the first plate 22.

The second plate 23 moves in the forward and backward directions while being coupled to the first plate 22.

A third moving hole 231 is formed at the center of the second plate 23 so as to move the pad portion 10 and the second plate 23 in the forward and backward directions while being coupled to the first plate 22 .

The third moving hole 231 may extend along the longitudinal direction of the second plate 23, that is, in the forward and backward directions.

Guide grooves 232 may be formed on both sides of the third moving hole 231 to guide the insertion rib 222 formed in the first plate 22 to move in the forward and backward directions.

Accordingly, the forward and backward moving distance of the second plate 23 can be limited to the length of the third moving hole 231 and the guide groove 232 in a state where the second plate 23 is engaged with the first plate 22.

A side wall 233 is formed on the outer circumferential surface of the second plate 23 so as to be inserted into the inner space of the cover 11 and the side wall 233 is coupled to the coupling groove 13 formed in the cover 11 A plurality of engaging projections 234 can be formed.

A fastening hole 235 may be formed on the rear side of the second plate 23 so as to be fastened to the pad portion 10 by fastening bolts.

The fixing plate 24 is formed in a substantially rectangular plate shape and a pair of protrusions 241 may be formed on the lower surface of the fixing plate 24 so as to be fastened by the coupling plate 21 and the bolts.

The pair of protrusions 241 are moved in the forward and backward directions and the left and right directions through the second and first plates 23 and 22 and the third through first moving holes 231, 221 and 211 of the coupling plate 21, respectively .

The pair of protrusions 241 may be formed with fastening holes 242 for fastening the fastening bolts to fasten them to the fastening plates 21, respectively.

As described above, according to the present invention, the front and rear positions of the armrest can be adjusted according to the body shape of the user by moving the pad portion in the front-back direction and the left-right direction using the position adjusting portion.

Particularly, according to the present invention, by using the first and second plates provided in the position adjusting unit, the moving distance in the forward and backward directions can be adjusted in two stages so that the user can move the armrest to a convenient position for using the armrest, .

On the other hand, on the upper surfaces of the first and second plates 22 and 23, a pair of first and second guides 22 and 23 are provided along the front and rear direction so as to be smoothly moved when the first and second plates 22 and 23 move in the front- Ribs 223 and 236 may be formed.

A pair of third guide ribs 237 may be formed on the lower surface of the second plate 23 along the forward and backward directions.

A pair of second guide ribs 236 formed on the upper surface of the second plate 23 may be inserted into the lower surface of the fixing plate 24 so that the moving groove 243 can be formed.

The front and rear ends of the pair of first moving holes 211 formed on the coupling plate 21 are respectively provided with a pair of first and second moving holes 211 and 211 for moving the pad unit 10 and the first and second plates 22 and 23 smoothly The movable rib 212 may be formed to protrude downward.

The connecting portion 40 may include a connecting member 41 having a substantially 'C' cross section and a connecting member 42 coupled to an upper portion of the connecting member 41.

The connecting member 41 serves to connect a seat (not shown) provided in a seat portion (not shown) and a height adjusting portion 30.

The lower end of the connecting body 42 is connected to the upper end of the connecting member 41 and the upper portion of the connecting body 42 is coupled to the inner space of the elevating and lowering cylinder 31 of the height adjusting portion 30.

The configuration of the height adjusting unit will be described in detail with reference to FIGS. 4 and 5. FIG.

FIG. 4 is an enlarged exploded perspective view showing the height adjuster shown in FIG. 2 from another angle, and FIG. 5 is a sectional view taken along the line A-A 'shown in FIG.

4 and 5, the height adjusting portion 30 is provided with an elevating cylinder 31 which is coupled to the connecting body 42 of the connecting portion 40 so as to be capable of elevating and lowering the elevating cylinder 31, A height adjusting bar 33 and a height adjusting bar 33 inserted into the internal space of the elevating cylinder 31 and rotating by the elevating operation of the lever 32, And a locking member 34 for locking or releasing the height adjusting bar 33 according to the rotation state of the height adjusting bar 33. [

The height adjusting portion 30 is provided with an engaging member 35 coupled to the upper portion of the lifting cylinder 31 and having a lever 32 movably engaged with the upper portion of the lifting cylinder 31, And an elastic member 36 provided on the lever 32 and providing an elastic force to the lever 32. [

An installation space 351 in which an upper end of the lever 32 and the elastic member 36 and the height adjusting bar 33 are provided is provided inside the engaging member 35. The lever 35 A pair of lifting ribs 352 for guiding the lifting operation can be formed at both ends of the lifting ribs 32

The engaging member 35 can be fastened to the lower surface of the engaging plate 21 of the position adjusting portion 20 by bolts.

The elevating cylinder 31 is formed in a substantially elliptical or rectangular cross section so that a space is formed therein and a through hole 311 through which the lever 32 protrudes is formed on the upper outer side of the elevating cylinder 31 .

The lifting cylinder 31 can be fastened to the coupling plate 21 by bolts.

The lever 32 includes a body 321 that is coupled to the engaging member 35 so as to be able to move up and down, a handle 322 that protrudes outward of the body 321 so as to be operable by the user, And a ring portion 323 which is formed with the height adjusting bar 33 and engages with the upper end of the height adjusting bar 33 to rotate the height adjusting bar 33.

Both ends of the body 321 are coupled to a pair of lifting ribs 352 formed on the engaging member 35 and are raised and lowered by the operation force of the user and the elastic force of the elastic member 36.

The handle 322 can be formed horizontally with the ground with a predetermined area so that the user can easily grasp and operate the grip 322. [

The ring portion 323 functions to rotate the height adjusting bar 33 coupled to the inside.

For this, at least one spiral protrusion 324 may be formed on the inner circumferential surface of the ring portion 323.

The locking member 34 includes a horizontal portion 341 fixed to the upper end of the connection body 42 of the connection portion 40 and a height adjustment bar 33 protruded downward from the center of the horizontal portion 341, (Not shown).

The fixing portion 342 is formed in a substantially cylindrical shape and a stopping protrusion 343 is formed at one side of the inner circumferential surface of the fixing portion 342 to receive at least one of a plurality of adjusting protrusions 331 formed on the height adjusting bar 33 .

The height adjusting bar 33 rotates in accordance with the ascending and descending operation of the lever 32 and functions to be locked or released to the locking member 34. [

A plurality of adjusting protrusions 331 are formed on the outer circumferential surface of the height adjusting bar 33 so as to adjust the height of the height adjusting bar 33. The height adjusting bar 33 is provided with a lever 32 A plurality of rotation protrusions 332 corresponding to the spiral protrusions 324 formed on the inner circumferential surface of the ring portion 323 of the ring portion 323 may be formed.

4, the adjusting protrusions 331 are formed in a fan shape in cross section, and the engaging protrusions 343 are formed in the shape of a circle. In order to smoothly lock or unlock the height adjusting bar 33 and the locking member 34, Sectional shape can be formed in a substantially semicircular shape.

A stopper 333 may be formed at the lower end of the height adjusting bar 33 to limit the rising distance of the height adjusting bar 33.

The height adjusting bar 33 rotates in a clockwise direction when viewed from one side, for example, the upper side of the lever 32 during the lifting operation of the lever 32, thereby releasing the locking with the locking member 34.

Accordingly, the user can pull up the lever 32 to lift the height adjusting bar 33 and the locking member 34, lift the pad unit 10, and adjust the height of the armrest.

On the other hand, when the lever 32 is lowered, the height adjusting bar 33 rotates in a counterclockwise direction when viewed from one side, for example, the upper side, and is locked with the locking member 34.

The lever 32 is lowered by the elastic force of the elastic member 36 and the height adjusting bar 33 is rotated to lock the locking member 34 .

As described above, the present invention can adjust the height of the armrest by locking or releasing the height adjusting bar by rotating the height adjusting bar by the internal helical gear method.

For example, the chair armrest according to the present embodiment can be set to adjust the front and rear left and right position and height by about 50 to 80 mm in the front-rear direction, about 10 to 25 mm in the left-right direction, and about 50 to 80 mm in the up- .

6 to 9, a method of operating an armrest for a chair according to a preferred embodiment of the present invention will be described in detail.

FIG. 6 is an operational state view showing an operation for adjusting a left-right position of an armrest for a chair according to a preferred embodiment of the present invention, FIG. 7 is an operational state view showing an operation for adjusting an anteroposterior position of the armrest for a chair, And Fig. 9 is an operational state view showing the operation of adjusting the height of the chair armrest.

The chair armrest according to the preferred embodiment of the present invention can adjust the height, the front-rear direction, and the left-right position of the pad unit 10 according to the body shape of the user.

That is, when the user adjusts the position of the armrest in the left and right direction, the user presses the pad portion 10 in the left or right direction as shown in FIG.

The first and second plates 22 and 23 and the fixing plate 24 of the position adjusting unit 20 coupled to the lower portion of the pad unit 10 are connected to the first moving holes 211 In the left or right direction.

Accordingly, the present invention can adjust the position of the armrest in the left and right direction by moving the pad unit in the left or right direction along the first moving hole.

When the user adjusts the front-rear direction position of the chair armrest, as shown in Fig. 7, the user pushes the pad portion 10 forward or backward.

At this time, the second plate 23 moves forward or backward along the second moving hole 221 formed on the first plate 22, and the pad portion 10 moves to the third position And moves forward or backward along the hole 231.

Accordingly, according to the present invention, the second portion of the pad portion and the position adjusting portion can be moved forward or backward along the second and third moving holes to adjust the forward and backward positions in two stages.

When the user adjusts the height of the armrest, as shown in FIG. 8, the user operates the lever 32 provided in the height adjusting portion 30 to pull upward.

Then, the height adjusting bar 33 screwed with the ring portion 323 of the lever 32 is rotated in one direction, for example, clockwise, and the locking state of the height adjusting bar 33 and the locking member 34 is released .

In this state, the user presses the pad portion 10 upward or downward to adjust the position of the pad portion 10.

Next, when the user removes the operation force applied to the lever 32, the lever 32 is lowered by the elastic force of the elastic member 36, as shown in Fig.

Then, the height adjusting bar 33 screwed with the ring portion 323 of the lever 32 is rotated in the opposite direction, for example, in the counterclockwise direction, so that any of the plurality of adjusting protrusions 331 formed on the height adjusting bar 33 And the pair is caught and fixed to the latching jaw 343 of the locking member 34. [

Accordingly, in the present invention, the height adjusting bar of the height adjusting portion can be locked and fixed, or the height of the armrest can be adjusted by releasing the locking state.

As described above, according to the present invention, the pad portion can be moved in the front, back, left and right direction and up and down direction according to the body shape of the user to adjust the front and rear left and right position and height.

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

The present invention is applied to a chair armrest technique in which the pad portion is moved in the forward, backward, leftward, rightward, and upward and downward directions according to the body shape of the user to adjust the front and rear left and right positions and height.

10: pad part 11: cover
12: pad member 13: engaging groove
20: position adjusting section 21: engaging plate
211: first moving ball 212: moving rib
22: first plate 221: second moving ball
222: insertion rib 223: first guide rib
23: second plate 231: third moving ball
232: guide groove 233: side wall
234: engaging projection 235: fastening hole
236: second guide rib 24: fixing plate
241: projecting portion 242: fastening hole
234: second moving groove 30: height adjusting section
31: lifting cylinder 311: through hole
32: Lever 321: Body
322: Handle portion 323: Ring portion
324: spiral projection 33: height adjustment bar
331: adjusting projection 332: rotation projection
34: Locking member 341:
342: fixing portion 343:
35: coupling member 351: installation space
352: lifting rib 36: elastic member
40: connection part 41: connection part
42:

Claims (9)

A pad portion on which a user's arm is seated,
A position adjusting unit for adjusting the position of the pad unit by moving the pad unit in the front,
And a height adjusting unit connected to a lower portion of the position adjusting unit and adjusting a height of the pad unit and the position adjusting unit,
Wherein the position adjusting portion includes an engaging plate movably coupled to an upper end of the height adjusting portion in a lateral direction,
A first plate movably coupled to an upper portion of the coupling plate in a forward and backward direction,
A second plate movably coupled to the upper portion of the first plate in the forward and backward directions,
And a fixing plate disposed on the upper portion of the second plate and fastened to the coupling plate, wherein the moving distance in the forward and backward directions is adjusted to two stages. delete The method according to claim 1,
The coupling plate is coupled to the elevating cylinder of the height adjusting unit,
Wherein the coupling plate is formed with a pair of first moving holes along the left and right direction so that the pad portion and the first and second plates can move in the left and right directions. The method of claim 3,
A second moving hole is formed in the first plate along the forward and backward directions,
A third moving hole is formed in the second plate along the forward and backward directions,
Wherein the position adjusting unit moves the pad unit and the second plate along the second and third moving holes to adjust the forward and backward positions in two stages. 5. The method of claim 4,
A pair of protrusions are formed on the lower surface of the fixing plate so as to be coupled to the coupling plate,
And the pair of protrusions sequentially move through the second and first plates and the third to the first moving holes of the coupling plate to move in the front-rear direction and the left-right direction. 6. The method according to any one of claims 1 to 5,
And a connecting portion connecting the seat portion of the chair and the height adjusting portion,
Wherein the height adjusting portion includes an elevating cylinder coupled to the connecting portion so as to be able to move up and down,
A lever installed on the upper portion of the lifting and lowering cylinder to move up and down by a user's operation,
A height adjusting bar inserted into the lifting and lowering cylinder and rotated by a lifting operation of the lever,
And a locking member for locking or releasing the height adjusting bar according to a rotation state of the height adjusting bar. The apparatus of claim 6, wherein the height adjuster
A coupling member coupled to an upper portion of the lifting cylinder and having one side of the lever movably coupled to the lifting cylinder;
Further comprising an elastic member provided between the lever and the engaging member and providing an elastic force to the lever. 8. The method of claim 7,
Wherein the lever includes a body that is movably coupled to the engaging member,
A handle portion protruding outward from the body;
And a ring portion formed inside the body and coupled with an upper end portion of the height adjusting bar to rotate the height adjusting bar,
And a spiral projection and a rotation projection are formed to correspond to the upper end portions of the ring portion and the height adjustment bar, respectively. 9. The method of claim 8,
A plurality of adjusting protrusions are formed on an outer circumferential surface of the height adjusting bar,
Wherein the locking member is formed with a locking protrusion for locking at least one of a plurality of the adjusting protrusions of the height adjusting bar.

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