KR101075875B1 - Headrest assembly of a chair and assembling method thereof - Google Patents

Abstract

It is a technical object of the present invention to provide a headrest assembly of a chair capable of disassembling an intermediate member and a frame without using bolts and nuts and minimizing thickness. To this end, the headrest assembly of the chair of the present invention is a headrest assembly of a chair comprising a cushion member, an intermediate member, and a frame, wherein the cushion member is fixed to the intermediate member, and the intermediate member and the frame are coupled units. It is coupled to each other by, and the coupling unit and the insertion hole formed in the intermediate member; An extension hole formed in the insertion hole and having a width smaller than the width of the insertion hole; An insertion protrusion formed in the frame to be inserted into the insertion hole and to be introduced into the insertion hole; A latching protrusion extending at an end of the inlet protrusion and inserted into the insertion hole and caught by the inlet hole after the inlet protrusion is inserted into the inlet hole; A stop hole formed in the intermediate member; And a stop protrusion formed in the frame and inserted into the stop hole when the pull projection enters the drop hole, thereby preventing the pull protrusion from being pulled out of the drop hole.

Chair, Headrest, Cushion, Assembly, Assembly

Description

HEADEST ASSEMBLY OF A CHAIR AND ASSEMBLING METHOD THEREOF}

TECHNICAL FIELD The present invention relates to a headrest assembly of a chair, and more particularly, to a headrest assembly of a chair capable of disassembling an intermediate member and a frame without using bolts and nuts, and minimizing thickness.

In general, the headrest is provided in the chair, and serves to comfortably support the user's neck or head when the user sleeps in the seated or seated state of the chair. This headrest includes a frame that supports the neck or head, and a cushion to provide comfort to the neck or head. Furthermore, the cushion portion includes a cushion member and an intermediate member wrapped by the cushion member.

On the other hand, the conventional headrest assembly is assembled through the following process.

First, the cushion member is positioned on the front and the edge of the intermediate member and then on the back of the intermediate member.

Thereafter, the frame is fixed to the back of the intermediate member so that the edge of the cushion member located on the back of the intermediate member is not visible from the outside.

In particular, bolts and nuts are used to fix the frame and the intermediate member. That is, double injection is made so that the nut is inserted into the intermediate member, and a bolt hole into which the bolt can be inserted is formed in the frame. Therefore, when the bolt is inserted into the bolt hole and then fastened to the nut, the intermediate member and the frame are fixed.

However, the conventional headrest assembly may have the following problems.

First, the configuration is complicated, and fastening takes a lot of time because the use of bolts, and when using a separate bolt tightening device to reduce the fastening time may be a problem that excessive assembly cost. In addition, since the injection of the intermediate member has to be double injection so that the nut is inserted therein may also be a problem that the cost is excessively required.

Furthermore, there may be a problem that the thickness of the intermediate member becomes thick because the intermediate member must have a sufficient thickness to accommodate the nut in order for the nut to be inserted into the intermediate member. In particular, in view of the current trend of thinning the headrest in consideration of design aspects, the increase in thickness of the intermediate member can be countered by this trend, and in terms of material cost, it is necessary to increase the thickness unnecessarily. There may be a problem of excessive cost. In addition, since the bolt is still exposed to the outside of the rear surface of the frame, a separate cap must be used to prevent this in consideration of a design aspect, and thus there may be a problem in that cost is additionally required.

The present invention is to solve the problems of the prior art, the technical problem of the present invention, without the use of bolts and nuts can be assembled disassembled the intermediate member and the frame and the headrest assembly of the chair that can minimize the thickness To provide.

In order to achieve the above object, the headrest assembly of the chair according to an embodiment of the present invention, in the headrest assembly of the chair comprising a cushion member, an intermediate member, and a frame, the cushion member is the intermediate member An insertion hole formed in the intermediate member, wherein the intermediate member and the frame are coupled to each other by a coupling unit, and the coupling unit is fixed to the intermediate member; An extension hole formed in the insertion hole and having a width smaller than the width of the insertion hole; An insertion protrusion formed in the frame to be inserted into the insertion hole and to be introduced into the insertion hole; A latching protrusion extending at an end of the inlet protrusion and inserted into the insertion hole and caught by the inlet hole after the inlet protrusion is introduced into the inlet hole; A stop hole formed in said intermediate member; And a stop protrusion formed in the frame and inserted into the stop hole when the pull protrusion enters the pull hole to prevent the pull protrusion from being pulled out of the pull hole.

In addition, the locking projection may have a shape in which the thickness thereof becomes thicker in the direction opposite to the direction in which the drawing projection is drawn into the drawing hole.

In addition, the frame is injected by an injection molding machine, and a shrinkage preventing groove is further provided over both the inlet protrusion and the catching protrusion to prevent the frame from being contracted by the inlet protrusion and the catching protrusion during cooling after the injection. Can be formed.

On the other hand, the assembly method of the headrest assembly of the chair according to an embodiment of the present invention includes a fixing step of fixing the cushion member to the intermediate member; An insertion step of inserting a locking projection and an introduction projection formed in the frame into an insertion hole formed in the intermediate member; An inflow step in which the inlet protrusion is slid into the inlet hole extending in the insertion hole; And a locking step in which the stop protrusion formed in the frame is inserted into the stop hole formed in the intermediate member after the pull-in step, so that the pull-out protrusion is pulled out of the pull-out hole.

In addition, the intermediate member and the frame may be in close contact with each other due to a shape in which the thickness of the drawing protrusion becomes thicker during the drawing step.

Further, in the fixing step, the cushion member is located on the back of the intermediate member after wrapping the front and the edge of the intermediate member, and the edge of the cushion member located on the back of the intermediate member is intermediate by the Taka. It can be fixed to the back of the member.

As described above, the headrest assembly of the chair and the assembly method thereof according to an embodiment of the present invention may have the following effects.

According to one embodiment of the present invention, as the intermediate member and the frame can be decomposably assembled without the use of bolts and nuts, the time and the cost of assembling the intermediate member and the frame can be significantly reduced.

Further, according to one embodiment of the present invention, since the nut does not need to be double injected into the intermediate member, it is possible to significantly reduce the time and cost of injecting the intermediate member as well as to minimize the thickness of the intermediate member. do. Ultimately, in light of the current trend of thinning the headrest in consideration of design aspects, it is possible to follow this trend as the middle member can be made thinner. In addition, the material cost can be reduced due to the reduction in the thickness of the intermediate member.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is a perspective view showing a headrest assembly of a chair according to an embodiment of the present invention, the headrest assembly is mounted on the chair, Figure 2 is a headrest assembly of the chair according to an embodiment of the present invention 3 is an exploded perspective view showing a front view showing the cushion member removed to properly show the main portion of the headrest assembly of the chair according to an embodiment of the present invention.

4 is a cross-sectional view taken in detail of IV-IV in FIG. 3, and FIG. 5 is a cross-sectional view taken in V-V of FIG. 3 as shown in FIG. 3.

The headrest assembly HR of a chair according to an embodiment of the present invention includes a cushion member 100, an intermediate member 200, and a frame 300, as shown in FIGS. 1 to 3. do. Here, the cushion member 100 is fixed to the intermediate member 200, and the intermediate member 200 and the frame 300 are coupled to each other by the coupling unit 400. For reference, the headrest HR may be mounted to the vertical member 10, as shown in FIG. 1. Here, the vertical member 10 may be mounted to the back support binding plate 30 for supporting the back plate 20, the back support binding plate 30 is provided on the seat plate 40 (or lower portion of the seat plate) of the chair Base or tilting device). Of course, although not shown, the vertical member 10 may be mounted directly to the seat plate 40 (or a base or tilting device provided below the seat plate) by lengthening the length of the vertical member 10.

Hereinafter, the above-described coupling unit 400 will be described in more detail with reference to FIGS. 2 and 3.

The coupling unit 400 includes an insertion hole 410 formed in the intermediate member 200, an introduction hole 420 extending in the insertion hole 410, and an introduction protrusion 430 formed in the frame 300. , A locking protrusion 440 extending at the end of the inlet protrusion 430, a stopping hole 450 formed at the intermediate member 200, and a stopping protrusion 460 formed at the frame 300. .

In particular, the width of the inlet hole 420 is formed smaller than the width of the insertion hole 410, and the thickness of the inlet projection 430 to be inserted into the insertion hole 410 and to the inlet hole 420 It is set to be able to be pulled in. In addition, the width of the locking protrusion 440 may be inserted into the insertion hole 410 and set to be caught by the insertion hole 420 after the introduction protrusion 430 is inserted into the insertion hole 420. In addition, as shown in FIG. 3, the stop protrusion 460 is positioned so that the stop protrusion 430 is inserted into the stop hole 450 when the pull protrusion 430 enters the pull hole 420, and the stop protrusion 460 stops. When inserted into the ball 450, the phenomenon in which the inlet protrusion 430 is moved in the opposite direction to the inlet direction, that is, the inlet protrusion 430 is removed from the inlet hole 420 is prevented. As a result, the engaging projection 440 of the frame 300 as shown in FIG. 6 by bringing the intermediate member 200 and the frame 300 into contact with each other in a direction in which the distance between them narrows ('HH' in FIG. 2). And the insertion protrusion 430 may be sequentially inserted into the insertion hole 410 of the intermediate member 200, and then the intermediate member 200 and the frame 300 may be interviewed as shown in FIG. 7. In the vertical direction ('VV' direction of Figure 2) in the sliding projection 430 can be introduced into the inlet hole 420, and as shown in Figure 8 the inlet projection 430 is the inlet hole ( Since the stop protrusion 460 to be described later is inserted into the stop hole 450 after being introduced into the 420, the stop protrusion 430 is prevented from being drawn out of the inlet hole 420 and at the end of the inlet protrusion 430. The formed locking protrusion 440 is locked by the inlet hole 420, that is, the locking is not caught ( and the intermediate member 200 and the frame 300 are in the assembled state. Furthermore, when the stop protrusion 460 is separated from the stop hole 450, the pull protrusion 430 is movable in the direction opposite to the direction in which the pull protrusion 430 is pulled from the pull hole 420. The engaging protrusion 440 formed at the end of the can be separated through the inlet hole 420, so that the intermediate member 200 and the frame 300 can be disassembled.

Furthermore, the locking protrusion 440 described above may have a shape in which the thickness of the locking protrusion 440 becomes thicker in the direction opposite to the direction in which the pulling protrusion 430 is drawn into the drawing hole 420. Therefore, due to the shape in which the inlet protrusion 430 becomes thicker, the intermediate member 200 and the frame 300 may be in close contact with each other while the inlet protrusion 430 is inserted into the inlet hole 420. Ultimately, since the intermediate member 200 and the frame 300 are in close contact with each other, problems that may occur when they are loose, that is, the stopping protrusion 460 may fall out of the stopping hole 450, or the intermediate member 200 may be separated from the intermediate member 200. The noise problems generated when the frames 300 collide with each other can be prevented in advance.

In addition, as illustrated in FIGS. 2 and 3, a shrinkage preventing groove 470 may be further formed over both the inlet protrusion 430 and the catching protrusion 440. As the shrinkage preventing groove 470 is further formed, the phenomenon in which the frame 300 is contracted by the inlet protrusion 430 and the catching protrusion 440 in the cooling process after injection may be prevented.

2 to 7, the assembly method of the headrest assembly of the chair according to an embodiment of the present invention will be described in detail.

6 and 7 illustrate the assembly process of the headrest assembly of the chair according to an embodiment of the present invention, a front view showing the cushion member 100 is removed.

First, the cushion member 100 shown in FIG. 2 is fixed to the intermediate member 200. For example, the method for fixing the cushion member 100 to the intermediate member 200 may include: covering the front and edges of the intermediate member 200 with the cushion member 100 and then surrounding the edge of the cushion member 100 with the intermediate member 200. ) And the edge of the cushion member 100 located on the back of the intermediate member 200 is fixed to the back of the intermediate member 200 using a taka (also referred to as a "stapler").

After the cushioning member 100 is fixed to the intermediate member 200 in this way, as shown in FIGS. 2 and 6, the direction in which the distance between the intermediate member 200 and the frame 300 is narrowed (see FIG. 2). By engaging in the 'HH' direction, the locking protrusion 440 and the insertion protrusion 430 formed in the frame 300 are sequentially inserted into the insertion hole 410 formed in the intermediate member 200. 6 and 7, the insertion hole is slid by moving in the vertical direction (the 'VV' arrow direction in FIGS. 6 and 7) in the state where the intermediate member 200 and the frame 300 are interviewed. An insertion protrusion 430 is introduced into the insertion hole 420 extending in the 410 (see arrow). At this time, as shown in Figure 5, the locking projection 440 is in a state caught in the inlet hole (420).

When the inlet protrusion 430 is introduced into the inlet hole 420 in this way, as shown in FIG. 3, the stop protrusion 460 formed in the frame 300 is inserted into the stop hole 450 formed in the intermediate member 200. The blocking protrusion 440 formed at the end of the pulling protrusion 430 is prevented from being pulled out from the pulling hole 420, that is, the falling protrusion 430 is prevented from being pulled out of the pulling hole 420. It is locked.

In addition, as shown in FIG. 4, while the inlet protrusion 430 is introduced into the inlet hole 420, the intermediate member 200 and the frame 300 are formed due to a shape in which the inlet protrusion 430 becomes thicker. Is in a state of being in close contact. Ultimately, since the intermediate member 200 and the frame 300 are in close contact with each other, problems that may occur when they are loose, that is, the stopping protrusion 460 may fall out of the stopping hole 450, or the intermediate member 200 may be separated from the intermediate member 200. The noise problems generated when the frames 300 collide with each other can be prevented in advance.

On the other hand, the following method is used to disassemble the intermediate member 200 and the frame 300 assembled as described above.

First, as illustrated by the arrow 'H-H' at the bottom of FIG. 8, the intermediate member 200 is spaced apart from the frame 300 on the side where the stop protrusion 460 and the stop hole 450 are located. At this time, since the intermediate member 200 and the frame 300 are injection moldings of a resin material, the stopping protrusion 460 is separated from the stopping hole 450 while being spaced apart by its elasticity. Then, as illustrated in FIG. 8, the intermediate member 200 and the frame 300 are interview-slid and separated in the opposite direction (the 'VV' arrow direction in FIG. 8) of the above-described assembly method to separate the inlet protrusion 430. When the lead is removed from the inlet hole 420, the locking protrusion 440 reaches the insertion hole 410. Thereafter, while the locking projection 440 is pulled out from the insertion hole 410, the intermediate member 200 and the frame 300 are separated from each other.

As described above, the headrest assembly of the chair and the assembly method thereof according to an embodiment of the present invention may have the following effects.

According to one embodiment of the present invention, since the intermediate member 200 and the frame 300 can be assembled in a demountable manner without the use of bolts and nuts, it is necessary to assemble the intermediate member 200 and the frame 300 with each other. The time and replacement costs can be significantly reduced.

Further, according to one embodiment of the present invention, since the nut does not need to be double injected into the intermediate member 200, the time and cost of injecting the intermediate member 200 can be significantly reduced, as well as the intermediate member ( The thickness of 200 may be minimized. Ultimately, in light of the current trend of thinning the headrest in consideration of design aspects, it is possible to follow this trend as the middle member can be made thinner. In addition, the material cost may be reduced due to the reduction in the thickness of the intermediate member 200.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a perspective view showing the headrest assembly of the chair according to an embodiment of the present invention, the headrest assembly is mounted on the chair.

Figure 2 is an exploded perspective view showing a headrest assembly of a chair according to an embodiment of the present invention.

Figure 3 is a front view showing the removal of the cushion member in order to properly show the main portion of the headrest assembly of the chair according to an embodiment of the present invention.

4 is a cross-sectional view of IV-IV of FIG. 3 as specifically showing the shape of the locking projection.

5 is a view illustrating a state where the locking projection is caught in the inlet groove, and is a V-V cross-sectional view of FIG. 3.

6 to 8 illustrate a process of assembling and disassembling the headrest assembly of a chair according to an embodiment of the present invention, and is a front view illustrating the removal of a cushion member.

Explanation of symbols for main parts of the drawings

100: cushion member 200: intermediate member

300: frame 400: coupling unit

410: insertion hole 420: insertion hole

430: inlet projection 440: hanging projection

450: stop hole 460: stop protrusion

Claims (6)

In the chair's headrest assembly comprising a cushion member, the elastic intermediate member 200 and the frame 300, The cushion member is fixed to the intermediate member, and The intermediate member and the frame are joined to each other by a coupling unit, The coupling unit An insertion hole formed in the intermediate member; An extension hole formed in the insertion hole and having a width smaller than the width of the insertion hole; An insertion protrusion formed in the frame to be inserted into the insertion hole and to be introduced into the insertion hole; A latching protrusion extending at an end of the inlet protrusion and inserted into the insertion hole and caught by the inlet hole after the inlet protrusion is introduced into the inlet hole; A stop hole formed in said intermediate member; And A headrest assembly of a chair comprising a stop protrusion formed in the frame and inserted into the stop hole when the inlet protrusion enters the inlet hole, thereby preventing the inlet protrusion from being drawn out of the inlet hole. The stop projection is formed at a position where the stop projection is inserted into the stop hole when the pull projection is introduced into the drop hole by an interview sliding displacement of the intermediate member and the frame, and the stop projection is inserted into the stop hole. When the insertion protrusion is prevented from moving in the opposite direction to the direction in which the inlet is drawn into the inlet hole, the locking protrusion formed at the end of the inlet protrusion is constrained by the inlet hole so that It is formed to be assembled, and when the stop projection is separated from the stop hole, the engaging projection is movable in the opposite direction of the direction in which the pulling in from the inlet hole while the engaging projection formed at the end of the inlet projection is the inlet hole Can be separated through the intermediate member and the frame Headrest assembly of the chair, characterized in that the decomposition is to be formed is possible. In claim 1, The locking projection is a headrest assembly of the chair having a shape that the thickness is gradually increased toward the direction opposite to the direction in which the inlet projection is drawn into the inlet hole. The method of claim 1 or 2, The frame is injected by an injection molding machine, and And a shrinkage preventing groove is further formed over both the inlet protrusion and the catching protrusion to prevent the frame from being contracted by the inlet protrusion and the catching protrusion during cooling after the injection. A fixing step of fixing the cushion member to the intermediate member; An insertion step of sequentially inserting the engaging projections and the inlet projections formed in the frame into the insertion holes formed in the intermediate member; An inlet step of sliding the indentation protrusion into an inlet hole extending in the insertion hole by sliding the frame and the intermediate member in an interview; A locking step of stopping the withdrawal protrusion from the insertion hole by inserting the stop protrusion formed in the frame after the drawing step into the stop hole formed in the intermediate member; And If it is necessary to separate the intermediate member and the frame, the intermediate member is separated from the frame by its elasticity on the side where the stopper and the stopper are located so that the stopper is released from the stopper and the retraction When the intermediate member and the frame are interview-slid and separated in the opposite direction of the step, and the pullout protrusion is pulled out from the inlet hole, the catching protrusion reaches the insertion hole, and the catching protrusion is removed from the inserting hole. And a disassembling step of separating the member and the frame from each other. In claim 4, While the retraction step is in progress And the intermediate member and the frame are in close contact with each other due to the shape in which the thickness of the inlet protrusion becomes thicker. The method of claim 5, In the fixing step, The cushion member is positioned on the back side of the intermediate member after wrapping the front and the edge of the intermediate member, and And an edge of the cushion member located on the back of the intermediate member is fixed to the back of the intermediate member by a tacker.

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