KR100611676B1 - Pole guide holder of chair headrest - Google Patents

Abstract

The present invention relates to a guide holder welded to a backrest frame to fix a pole guide to a backrest frame by fitting a pole provided with a headrest to a backrest of a vehicle seat or a chair. In the holder 100 for fixing the guide to be welded vertically to the top of the back frame of the seat or chair to fit the headrest, the holder 100 is formed by bending the metal plate (P) in a circular shape It has a form, but one end of the metal plate (P) is formed with a seating groove 110 which is opened to the outside, the seating groove 110 is formed through the coupling hole 112, the other end of the metal plate (P) A seating protrusion 130 that is engaged with the seating groove 110 is formed to protrude, but a bottom of the seating protrusion 130 is formed with a coupling protrusion 132 that is engaged with the coupling hole 112. When bending the metal plate (P) in the form of a circular pipe, the chair head, characterized in that the coupling protrusion 132 and the seating protrusion 130 are formed to engage the coupling hole 112 and the seating groove 110, respectively. Rest pole guide holders are provided.

Headrest, Pole Guide, Guide Holder, Seating Groove, Seating Projection, Joining Hole, Joining Projection

Description

Pole guide holder of chair headrest

1 is an exploded perspective view showing an example of a chair equipped with a conventional headrest

Figure 2 is a perspective view showing an example of a conventional headrest pole guide holder for chair

3 is a manufacturing process diagram of the guide holder according to the first embodiment of the present invention

4 is a perspective view of a guide holder according to a first embodiment of the present invention;

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a manufacturing process diagram of the guide holder according to the second embodiment of the present invention

7 is a perspective view of a guide holder according to a second embodiment of the present invention;

FIG. 8 is a sectional view taken along the line BB of FIG.

<Description of the symbols for the main parts of the drawings>

  4. Backrest 5. Frame

  7. Paul 8. Headrest

20. Guide 26. Fitting

100. Holder 110. Seating groove

112. Coupling hole 120. Fitting groove

125. Horizontal part 130. Seating protrusion

132. Coupling protrusion

The present invention relates to a headrest pole guide holder for a chair, and more particularly, a pole guide for fixing the headrest to the backrest by fitting the pole of the headrest to the backrest of the vehicle seat or the chair to the backrest frame. The guide holder is welded to the back frame to make it.

In general, a headrest is provided on the seat of a vehicle seat or an office chair to support a seated person's head or to protect a neck during a vehicle crash. As shown in FIG. 1, the vehicle seat or chair provided with the headrest is formed in a circular pipe shape at the top of the back frame 5, and has a pair of guide grooves formed at both sides of the top thereof. Holders 10 (hereinafter referred to as holders) are vertically welded and spaced apart at regular intervals so as to be parallel to each other, and the holder 10 has pole guides 20 having a fitting protrusions formed to engage the fitting grooves at the periphery thereof. Guide) is fitted to be exposed to the upper side of the backrest 4, and a pair of poles 7 protruding downwardly to be fitted to the guide are fixed to both ends of the lower end of the headrest 8.

Therefore, when the pawl 7 is fitted to the guide 20, the headrest 8 is fixed to the backrest 4 to support the seat of the seated person. At this time, one side circumference of the pole 7 is formed with a locking groove (not shown) at a predetermined interval along the longitudinal direction, the guide is provided with a locking means (not shown) to be caught in the locking groove, The height of the headrest 8 can be adjusted by the locking groove and the locking means.

Meanwhile, in order to manufacture the holder 10 in the related art, after cutting a long pipe to a certain length, the groove should be machined one by one so that the guide is not rotated at the upper end thereof. There is a problem that the cost increases.

Accordingly, in order to solve the above problems, there is provided a holder 10 manufactured by continuously bending a metal plate into a press mold. Figure 2 shows an example of such a conventional press-formed holder 10, referring to this, first, the metal plate is punched in a predetermined length and width, but the circular coupling to engage each other at regular intervals along the longitudinal direction at both ends After the groove 12 and the coupling protrusion 14 and the upper end to the fitting groove 16 is formed so that the fitting protrusion of the guide is fitted to each other, the circular groove so that the coupling groove 12 and the coupling protrusion 14 is engaged. The holder 10 is manufactured by bending the pipe.

However, since the holder 10 has a structure in which the coupling groove 12 and the coupling protrusion 14 are interlocked in the direction in which the shaft intersects, the direction in which the bitten portion is crossed by the external impact during the storage or transportation process after bending molding is crossed. There is a problem that can not be used because the deformation occurs such as. In addition, the conventional holder 10 is formed in the form of a circular pipe, there is a problem that it is very difficult to weld attached at regular intervals so that the pair of holder 10 is parallel to each other when the contact area is small when welding to the backrest frame. Of course, even if welding is attached, the inner diameter of the holder 10 is reduced by the back bead, there is a problem that it is difficult to fit the guide 20 into the holder 10. Therefore, after welding the holder 10 to the back frame, the interior of the holder 10 needs to be polished and processed afterwards.

Accordingly, the present invention has been proposed to solve the fundamental problems of the prior art as described above, the object of the present invention is to prevent the bending molded holder is easily deformed, to facilitate the welding by widening the contact area with the back frame. It is possible to provide a headrest pole guide holder for a chair, characterized in that the guide can be easily fitted to the holder regardless of the back bead.

In order to achieve the above object, the present invention is a holder for fixing a guide that is welded vertically to the top of the back frame of the vehicle seat or chair to fit the headrest, the holder is bending the metal plate in a circle It is formed in the form of a pipe, one end of the metal plate is formed with a seating groove which is opened to the outside, the mounting groove is formed through the seating groove, the other end of the metal plate is formed to project the seating projections engaging the seating groove. The bottom of the seating protrusion is formed with a engaging protrusion to be engaged with the coupling hole, when bending the metal plate in the form of a circular pipe, the coupling protrusion and the seating protrusion for the chair, characterized in that each of the coupling hole and the seating groove is formed Headrest pole guide holders are provided.

According to another feature of the present invention, the holder is formed in a pipe shape by bending the metal plate in a circular shape, the first and second seating grooves which are opened to the outside on opposite surfaces of both ends of the metal plate are formed, respectively, the first The second and second seating grooves are provided with first and second extension parts extending outwardly to engage the opposite first and second seating grooves, respectively, and the first and second bottom grooves are coupled to be engaged with each other. When the holes and the coupling protrusions are formed, respectively, when the metal plate is bent into a circular pipe shape, the first and second bottom portions are respectively engaged with the first and second seating grooves opposite to each other, and the coupling protrusions are engaged with the coupling holes. A headrest pole guide holder for a chair is provided.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

<Example 1>

3 is a manufacturing process diagram of the guide holder according to the first embodiment of the present invention, Figure 4 is a perspective view of the guide holder according to the first embodiment of the present invention, Figure 5 is a cross-sectional view A-A of FIG. As shown, the chair headrest pole guide holder 100 is formed by bending a metal strip member in a continuous pipe shape by a progressive mold. This will be described in detail with reference to FIG. 3. First, the strip member is punched into a predetermined width and length. At this time, in the center of the widthwise one end portion of the punched metal plate (P), a pair of seating grooves (110) which are opened outward at a predetermined distance along the longitudinal direction, and the seating groove (110) in the other end in the width direction A pair of seating protrusions 130 projecting outwardly to engage with the seating grooves 110 and the seating protrusions 130 are formed so that the coupling holes 112 and the coupling protrusions 132 are formed to be engaged with each other. )do. In addition, the fitting groove 120 is opened to the upper side so as to form a fitting groove of the guide to the upper center portion and the upper end of both ends of the metal plate (P).

Subsequently, the metal plate P is bent into a circular pipe shape, but the seating protrusion 130 and the coupling protrusion 132 formed at one end thereof are engaged with the seating groove 110 and the coupling hole 112 formed at the other end thereof. When the bending is formed into a circular pipe shape (B), a holder 100 having a pair of fitting grooves 120 formed thereon is opened at an upper end thereof at a position facing each other.

At this time, the diameter of the coupling hole 112 is formed to be relatively smaller than the diameter of the coupling protrusion 132, or the diameter of the coupling protrusion 132 is formed relatively larger than the diameter of the coupling hole 112, the coupling The hole 112 and the coupling protrusion 132 are to be coupled to each other by interference fit.

Accordingly, the chair headrest pole guide holder 100 for bending the metal plate (P) in the form of a circular pipe, seating grooves 110 and the mounting protrusions 130 and the mounting grooves 110 and the mounting at both ends The mounting protrusion 130 and the coupling protrusion 132 are the mounting groove 110 and the coupling hole 112 by using the metal plate P on which the coupling hole 112 and the coupling protrusion 132 are formed in the protrusion 130. Since the bending is formed in the form of a circular pipe to be engaged with the, it is possible to prevent the engaging portions from being spread from each other in any direction.

That is, the seating protrusion 130 is engaged with the seating groove 110 as well as the coupling protrusion 132 is engaged with the coupling hole 112, the shaft by the seating projection 130 is engaged with the seating groove 130 It is prevented from spreading in the center direction, and the coupling protrusion 132 is engaged with the coupling hole 112, so that it is prevented from spreading in the mutually expanding directions.

 At this time, the horizontal portion 125 is bent in the center portion of the circumferential wall of the holder 100, which is bent in a circular pipe shape, that is, the end portion of the circumference wall adjacent to both ends is formed to be expanded in a '└┘' shape. Prepared. Therefore, since the horizontal portion 125 is formed in the peripheral wall of the central portion of the holder 100 having a circular pipe shape so that the diameter is expanded, the horizontal portion 125 is in contact with the back frame. Both ends of the) will be welded to the back frame.

Therefore, the holder 100 is formed with a horizontal portion 125 on the circumferential wall at one side of the central portion, and thus, as in the related art, the holder 100 is simply formed in a circular pipe shape and is in linear contact with the backrest frame, by the horizontal portion 125. Since the area contacted by the surface contact with the back frame is large, the holder 100 can be easily welded to the back frame. In addition, since both ends of the horizontal portion 125 are welded to the backrest frame, that is, as shown in FIG. 5, the welded portion is extended to the inner wall surface of the holder 100 at the position of the horizontal portion 125. Even if the back bead (B) occurs, it does not intrude into the inner diameter of the circular inside of the holder 100, it is possible to easily fit the guide without additional post processing.

<Example 2>

6 is a manufacturing process diagram of the guide holder according to the second embodiment of the present invention, Figure 7 is a perspective view of the guide holder according to the second embodiment of the present invention, Figure 8 is a cross-sectional view B-B of FIG. The same parts as those in the first embodiment will be denoted by the same reference numerals and the description of the overlapping operation will be omitted. As shown, the holder 100 is a pair of first and second seating grooves 210 and 230 which are opened outwardly at regular intervals along the longitudinal direction on opposite surfaces of the centers of the widthwise ends of the punched metal plate P. ) Are formed respectively. At this time, the outer end portions of the first and second bottom portions 211 and 231 of the first and second seating grooves 210 and 230 may be engaged with the opposite first and second seating grooves 210 and 230, respectively. ) Is provided. That is, a first extension part 212 is formed at an outer end of the first bottom part 211 and extends to engage the second seating groove 230, and an outer end of the second bottom part 231 is provided. The second extension part 232 is provided to be engaged with the first seating groove 210.

In addition, in the center between each of the first bottom portion 211 and the first extension portion 212, and between the second bottom portion 231 and the second extension portion 232 and the coupling hole 112 and Punching (A) to form a coupling protrusion 132, respectively.

Subsequently, the metal plate P is bent to form a circular pipe, but the first and second extension parts 212 and 232 are engaged with the coupling holes 112 by the coupling protrusions 132 and the first and second seating grooves 210 and 230. When the bending is formed into a circular pipe shape (B), a holder 100 having a pair of fitting grooves 120 formed thereon is opened at an upper end thereof at a position facing each other.

Therefore, since the second embodiment of the present invention is bent and formed in the same structure as the first embodiment, the second embodiment of the present invention may have the same similar effect as the first embodiment.

According to the present invention as described above, the holder is bent to form a metal plate in the shape of a circular pipe, forming a seating groove and a seating projection at each end of the metal plate, respectively, the coupling hole and the engaging projection in the seating groove and the seating protrusion, respectively. Since the formed metal plate is bent and formed into a circular pipe shape so as to engage the seating protrusion and the coupling protrusion with the seating groove and the coupling hole, it is possible to prevent the meshed portion from spreading in the direction in which the spaced apart from each other. In addition, by providing a horizontal portion with a wide diameter so as to widen the contact area with the back frame on one circumferential wall of the holder, it can be easily welded to the back frame, and guides the pawl without post-processing even if a back bead occurs. There is an advantage that can be easily fitted.

In the above, the features of the present invention have been shown and described with reference to preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention belongs to the scope of the present invention without departing from the objects, configurations, and effects thereof. Various modifications may be made by those skilled in the art.

Claims (4)

In the holder for fixing the guide which is welded vertically to the top of the back frame of the vehicle seat or chair to fit the headrest, The holder is formed in a pipe shape by bending a metal plate in a circular shape, One end of the metal plate is formed with a mounting groove which is opened to the outside, the coupling groove is formed through the mounting groove, The other end of the metal plate is provided with a projection protrusion engaging the seating groove, the bottom surface of the seating projection is formed with a coupling protrusion to engage the coupling hole, And bending the metal plate in a circular pipe shape to form the engaging protrusion and the seating protrusion to be engaged with the coupling hole and the seating groove, respectively. In the holder for fixing the guide which is welded vertically to the top of the back frame of the vehicle seat or chair to fit the headrest, The holder is formed in a pipe shape by bending a metal plate in a circular shape, First and second seating grooves which are opened outwardly are formed on opposite surfaces of both ends of the metal plate, respectively, and end portions of the first and second seating grooves are respectively engaged with opposite first and second seating grooves. The first and second extension parts extending to the outside is provided, In the center between the first bottom portion and the first extension portion and between the second bottom portion and the second extension portion, coupling holes and coupling protrusions are formed to be engaged with each other, When the metal plate is bent in the form of a circular pipe, the headrest pole guide holder for a chair, wherein the first and second bottom portions are respectively engaged with the first and second seating grooves opposite to each other, and the engaging protrusion is formed to be engaged with the coupling hole. . The method according to claim 1 or 2, One side circumferential wall of the center portion of the holder is a headrest pole guide holder for chairs, characterized in that the horizontal portion is formed to be bent to expand the diameter of the '└┘' shape so that the area in contact with the back frame is widened. 4. The headrest pole guide holder according to claim 3, wherein the horizontal portion is formed on a circumferential wall of a portion adjacent to both ends.

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