KR101873721B1 - Head-rest for chair - Google Patents

Abstract

The present invention relates to a chair, which comprises a mounting bracket provided on a headrest, one or more leg portions provided on a backrest, and a mounting bracket, and a joint for adjusting the height of the headrest by allowing linear reciprocating movement along the rail portion And a control unit.
The present invention provides a headrest which can be easily coupled to and detached from a backrest, provides ease of maintenance through easy separation and coupling, and prevents a joint between a headrest and a backrest from being exposed, And the sensibility and the merchantability can be increased.

Description

Chair {HEAD-REST FOR CHAIR}

The present invention relates to a chair, and more particularly, to a headrest that can be easily coupled to and detached from a backrest, provides ease of maintenance through easy separation and coupling, And to increase the esthetics and merchantability of the chair.

Generally, widely used chairs include business chairs used in schools, offices, and transportation chairs used in vehicles such as automobiles and airplanes. For the chair user, most chairs support the user's head on the chair A head-rest is formed.

When a user using such a business (office) chair or a transportation chair performs work (hereinafter referred to as "work") for studying, work, or driving (hereinafter referred to as "rest" So that the user's head can be held against the headrest to be rested while the head and back are turned backward to rest and work, The head rest of the chair is formed to be spaced apart from the user's head by a certain distance and disposed rearward.

As described above, for the user's work and rest, there have been proposed many improvements to the backrest or the backrest of the chair which can comfortably support the back and back of the user at the time of the user's work, And the neck can not be comfortably supported at the time of work or at the same time.

A conventional method for comfortably supporting the head and neck of a user is disclosed in Korean Utility Model Registration No. 20-0326836 (design name: neck-headrest of a car chair), Korean Patent No. 10-1656661 (Headrest for a chair which is variable in its neck support).

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Conventional chair headrests are adjustable in height or tilting according to the body shape of the seated person. The position variable device of the headrest is exposed to the outside, resulting in a deterioration of aesthetic sense, and a safety accident such as a part of the body is caused.

In addition, the conventional headrest for a chair has a disadvantage in that it is difficult to separate and install the position variable device and maintenance because of inconvenience.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a chair which can easily couple and detach a headrest to and from a back, .

It is another object of the present invention to provide a chair for enhancing a sense of beauty and merchandise by preventing the joint between the headrest and the backrest from being exposed to the maximum extent in the backrest.

A chair according to the present invention comprises: a mounting bracket provided on a headrest; One or more rails provided on the back; And a joint for fitting the mounting bracket and adjusting the height of the headrest by permitting linear reciprocating movement along the rail portion.

The mounting bracket includes: a body detachably coupled to the headrest; And a mounting rib extending from the body and detachably coupled to the joint.

The joint comprising: a body; An assembling hole formed in the body for axially inserting the mounting rib; A roller member rotatably provided to the main body so that the main body is movable while being guided by the rail portion; And an elastic piece extending from an edge of the assembly hole part to the rail part side and elastically deformable to press the mounting rib inserted into the assembly hole part at least at both sides.

The mounting rib may be recessed to receive the elastic piece. The elastic piece may be received in the receiving groove and protrude from the receiving protrusion to maintain the coupled state of the mounting rib.

Wherein the rail portion includes: a frame detachably coupled to the backrest, the frame having the joint on the inside and passing through the communication hole for guiding movement; And a concavo-convex portion formed on an upper edge of the communication hole portion to guide the rotation of the roller member in the rolling direction and to set the multi-stage position of the headrest and prevent the body from being released to the lower side of the frame do.

The body can be prevented from being separated from the frame naturally by the escape prevention portion.

Wherein the separation preventing portion comprises: a supporting protrusion formed on the frame corresponding to a lower edge of the communication hole portion; And a supporting protrusion extending from the elastic piece and contacting the supporting jaw, for guiding the roller member to be forcedly moved along the concave-convex part and preventing the main body from being separated from the upper side of the frame.

The frame may be formed with chamfered portions at one side edge with respect to the central axis direction of the communication hole portion for inserting the receiving protrusions protruding outward so as to correspond to the supporting protrusions projecting inward from the respective at least one pair of the elastic pieces .

The body may be provided with spacers to guide reciprocating movement in contact with the inner surface of the frame.

As described above, the chair according to the present invention can easily couple and separate the headrest to and from the back, unlike the prior art, and can provide convenience in maintenance through easy separation and coupling.

In addition, since the joint between the headrest and the backrest is not exposed to the maximum extent in the backrest, the present invention can increase the esthetics and the merchantability.

1 is a perspective view of a chair according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a headrest according to an embodiment of the present invention.
3 is an enlarged perspective view showing a joint portion between a chair and a headrest according to an embodiment of the present invention.
4 is an enlarged exploded perspective view showing a joint portion between a chair and a headrest according to an embodiment of the present invention.
5 is an exploded perspective view of an enlarged bottom surface of a joint portion between a chair and a headrest according to an embodiment of the present invention.
6 is a plan view showing an assembled state of a joint portion between a chair and a headrest according to an embodiment of the present invention.
7 is a sectional view taken along the line AA in Fig.
8 is a sectional view taken along line BB of Fig.
9 is a cross-sectional view taken along the line CC of Fig.

Hereinafter, an embodiment of a chair according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a chair according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a chair in which a headrest is separated according to an embodiment of the present invention.

FIG. 3 is an enlarged perspective view showing a joint between a chair and a headrest according to an embodiment of the present invention, FIG. 4 is an enlarged exploded perspective view showing a joint between a chair and a headrest according to an embodiment of the present invention, 5 is an enlarged bottom exploded perspective view of a joint portion between a chair and a headrest according to an embodiment of the present invention.

FIG. 6 is a plan view showing an assembled state of a joint portion between a chair and a headrest according to an embodiment of the present invention, FIG. 7 is a sectional view taken along the line AA in FIG. 6, Is a cross-sectional view taken along line CC of Fig.

1 to 9, a chair 10 according to an embodiment of the present invention includes a seat 20, a backrest 30, and a head-rest 40.

The seat (20) serves to support the hip portion of the seated person, and the backrest (30) serves to support the waist and lumbar of the seated person sitting on the seat (20).

Of course, the seat plate 20 and the backrest 30 can be deformed into various shapes.

In addition, the headrest 40 is provided on the backrest 30 to support the neck or waist of the seated person leaning on the backrest 30. Of course, the headrest 40 can be applied in various shapes and various materials.

At this time, the headrest 40 is coupled to the backrest 30, and the joint portion of the headrest 40 and the backrest 30 is exposed to the outside as much as possible. Thus, the backrest 30 forms the recessed groove portion 32. As shown in Fig.

The headrest 40 is engaged with the backrest 30 inside the recessed trench 32 by the mounting bracket, the rail part 200 and the joint 300. In addition, the headrest 40 is provided to be easily engageable with and detachable from the backrest 30 through the recessed groove portion 32.

In detail, the mounting bracket 100 is releasably coupled to the headrest 40.

The rail portion 200 is detachably coupled to the backrest 30 corresponding to the inside of the recessed groove portion 32. At this time, the mounting bracket 100 is coupled to the headrest 40 by bolting or the like, and the rail part 200 is coupled to the backrest 30 by bolting or the like.

In addition, the joint 300 has a function of fitting the mounting bracket 100 and allowing linear reciprocating motion along the rail part 200, thereby adjusting the height of the headrest 40. [

Particularly, since the joint 300 can be fitted (assembled) to the rail portion 200 while being firmly coupled to the mounting bracket 100, the headrest 40 can be easily engaged with the backrest 30 .

More specifically, the mounting bracket 100 includes a body 110 and a mounting rib 120.

The body 110 is detachably coupled to the rear side of the headrest 40. At this time, the body 110 can be applied in various shapes and various materials.

The mounting rib 120 extends from the body 110 and is detachably coupled to the body 310 of the joint 300. That is, as the mounting ribs 120 are constrained to the body 310, the mounting ribs 120 are optionally detached from the joint 300. Of course, the mounting ribs 120 can be manufactured in various shapes and can be manufactured separately or integrally with the body 110.

The joint 300 also includes a main body 310, an assembly hole portion 320, a roller member 330, and an elastic piece 340.

The main body 310 has an assembly hole portion 320, a roller member 330 and an elastic piece 340 to form the outer shape of the joint 300. The main body 310 is easily assembled to the rail part 200 through a specific part of the rail part 200 and is assembled to the rail part 200 at other parts except the specific part of the rail part 200 And is also prevented from being arbitrarily detached from the rail part (200).

Of course, the main body 310 can be deformed into various shapes.

The assembly hole portion 320 is formed in the body 310 to insert the mounting rib 120 in the axial direction. At this time, the assembly hole portion 320 is formed to be opened to both sides of the main body 310. Of course, the assembly hole portion 320 may be opened only to one side in order to insert the mounting rib 120.

The roller member 330 is rotatably provided in the main body 310 and is capable of moving while being guided by the rail portion 200 as the main body 310 is rotated in the corresponding portion of the rail portion 200.

At this time, the roller member 330 is not limited to the number, material, and size. In addition, the roller member 330 may be provided to the main body 310 in various ways.

The pair of elastic pieces 340 are provided to face at least the body 310 corresponding to the edge of the assembly hole 320 and extend toward the rail 200. Accordingly, the elastic pieces 340 are elastically deformable.

In particular, the elastic piece 340 elastically presses the mounting rib 120 inserted into the assembly hole 320 at least on both sides thereof, thereby pressing and fixing the mounting rib 120.

Of course, the elastic piece 340 can be deformed into various shapes.

Meanwhile, the mounting rib 120 can be more firmly restrained to the main body 310 while being inserted into the assembly hole portion 320.

For this purpose, the mounting rib 120 is formed on the circumferential surface to house the receiving groove 122. The elastic piece 340 is accommodated in the receiving groove 122 to maintain the engaged state of the mounting rib 120, (342). At this time, as the resilient piece 340 elastically presses the peripheral surface of the mounting rib 120, the receiving protrusion 342 is retained in the receiving groove 122, and the mounting bracket 100 The coupling force to the joint 300 is increased.

Of course, the receiving recess portion 342 and the receiving recess portion 122 can be deformed into various shapes.

In addition, the rail portion 200 includes a frame 210 and a concavo-convex portion 220.

The frame 210 forms an outer shape of the rail 200 and is detachably coupled to the backrest 30. The communication hole 212 is formed in the through hole so as to guide the joint 300 with the joint 300 inside. Of course, the outer shape of the frame 210 can be variously formed.

The communication hole portion 212 is formed in a rectangular shape in the frame 210 to allow the height of the headrest 40 to be adjusted.

The concave and convex portion 220 is formed at the upper edge of the communication hole portion 212 so as to guide the roller member 330 of the main body 310 to rotate and to move and to set the multi-end position of the headrest 40. Particularly, when the roller member 330 contacts the concave / convex portion 220, the main body 310 is prevented from being released to the lower side of the frame 210 through the communication hole portion 212. At this time, the concave and convex portion 220 can be deformed into various shapes.

Also, the main body 310 is prevented from being separated from the frame 210 naturally by the escape prevention portion 400.

Here, the separation preventing portion 400 includes a supporting jaw 410 and a supporting protrusion 420.

The supporting jaw portion 410 is formed on the frame 210 corresponding to the lower edge of the communication hole portion 212.

The supporting protrusions 420 extend outward from the respective elastic pieces 340 and are moved in contact with the supporting protrusions 410. Therefore, the roller member 330 provided on the main body 310 can be forcibly moved in multiple steps along the concave-convex portion 220 while being in contact with the concave-convex portion 220 at all times.

In addition, the support protrusion 420 contacts the support protrusion 410 to prevent the main body 310 from being released to the upper side of the frame 210.

As a result, the main body 310 of the joint 300 is reciprocally movable along the communication hole portion 212 while being firmly engaged with the frame 210.

Of course, the supporting jaw 410 and the supporting protrusion 420 can be deformed into various shapes.

At this time, the elastic piece 340 protrudes outwardly from the receiving protrusion 342, and the supporting protrusion 420 protrudes from the inside. The receiving protrusions 342 and the supporting protrusions 420 may be located on the same plane.

 Particularly, the elastic piece 340 formed by extending the receiving protrusion 342 outwardly must be easily assembled inside the communication hole portion 212 of the frame 210.

The frame 210 has a communicating hole portion 212 for inserting a receiving protrusion 342 protruding outward to correspond to the supporting protrusion 420 protruding outward from each of the at least one pair of the elastic pieces 340. [ The chamfer 230 is formed at one side edge with respect to the center axis direction of the wafer.

Thus, the user inserts the adjacent pair of elastic pieces 340 into the communication hole portion 212 at the chamfered portion 230 position. At this time, the pair of elastic pieces 340 are elastically deformed and inserted into the communication hole portion 212 in a gathered state, or sequentially inserted into the communication hole portion 212.

Thereafter, the user pushes and moves the headrest 40 so that the roller member 330 comes into contact with the concave / convex portion 220 and the support projection 420 comes into contact with the support step 410. At this time, the pair of elastic pieces 340 are elastically restored to be prevented from being separated from the upper and lower sides of the communication hole portion 212.

Of course, the chamfer 230 can be deformed into various shapes.

In addition, the main body 310 can extend the spacers 312 on either side or both sides. As the spacer 312 guides the reciprocating movement while being in contact with the inner surface of the frame 210, the roller member 330 can be moved along the recessed portion 220. Of course, the spacer 312 can be deformed into various shapes.

As a result, when the user lifts the headrest 40 and pushes the headrest 40 upward in the communication hole 212 of the frame 210 at the lower position of the communication hole 212, 40 are bound to the rail portion 200 coupled to the backrest 30. [

Conversely, when the user forcibly moves the headrest 40 in the downward direction of the communication hole portion 212 and then pulls the headrest 40, the headrest 40 is separated from the rail portion 200 of the backrest 30.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: Chair 20: Seat
30: backrest 32: recessed groove
40: Headrest 100: Mounting bracket
110: Body 120: Mounting rib
122: receiving groove 200:
210: frame 212: communicating hole portion
220: concave / convex portion 230: chamfered portion
300: joint 310: body
312: spacer 320:
330: roller member 340:
342: receiving protrusion 400:
410: supporting jaw 420: supporting projection

Claims (8)

A mounting bracket provided on the headrest; One or more rails provided on the back; And a joint for fitting the mounting bracket and adjusting a height of the headrest by allowing linear reciprocating movement along the rail portion,
Wherein the mounting bracket includes a mounting rib detachably coupled to the joint,
The joint comprising: a body; An assembling hole formed in the body for axially inserting the mounting rib; A roller member rotatably provided to the main body so that the main body is movable while being guided by the rail portion; And an elastic piece extending from an edge of the assembly hole part to the rail part side and elastically deformable to press the mounting rib inserted into the assembly hole part at least at both sides,
Wherein the rail portion includes: a frame detachably coupled to the backrest, the frame having the joint on the inside and passing through the communication hole for guiding movement; And a concavo-convex portion formed on an upper edge of the communication hole portion to guide the rotation of the roller member in the rolling direction and to set the multi-stage position of the headrest and prevent the body from being released to the lower side of the frame In addition,
The body is prevented from being separated from the frame naturally by the escape prevention portion,
Wherein the separation preventing portion comprises: a supporting protrusion formed on the frame corresponding to a lower edge of the communication hole portion; And
And a supporting protrusion extending from the elastic piece and contacting the supporting jaw for guiding the roller member to be forcedly moved along the concave-convex part and preventing the main body from being separated to the upper side of the frame. .
The method according to claim 1,
Wherein the mounting bracket comprises a body detachably coupled to the headrest and extending the mounting rib.
delete The method according to claim 1,
Wherein the mounting rib is recessed into the receiving groove,
Wherein the resilient piece is received in the receiving groove and protrudes from the receiving recess to maintain the engaged state of the mounting rib.
delete delete The method according to claim 1,
Wherein the frame has chamfer portions at one side edge with respect to the central axis direction of the communicating hole portion for inserting a receiving protrusion protruding outward so as to correspond to a supporting protrusion protruding inward from each of the at least one pair of the resilient pieces The chair.
The method according to claim 1,
Wherein the body has spacers for guiding reciprocating movement in contact with the inner surface of the frame.

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