Headrest frame

Abstract

To provide a headrest frame which enables a body frame to be provided with a protrusion part protruding outward in a width direction from a width directional pair of leg parts without welding on the body frame.SOLUTION: A headrest frame 2F forming a framework of a headrest 2 has a body frame 10 including a width-directional pair of leg parts 11 extending in a height direction and supporting the headrest 2, and a width directional pair of protrusion parts 12 seamlessly bending and protruding outward in a width direction from the pair of leg parts 11.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a headrest frame, and more particularly to a headrest frame that forms the framework of a headrest. [Background technology]

[0002] Patent Document 1 discloses a configuration in which a headrest frame includes a main body frame made of a pipe material bent into an inverted U shape when viewed from the front. The main body frame has an inverted U shape when viewed from the front, and includes a pair of legs in the width direction that support the headrest and a connecting part that connects the upper ends of the legs. The headrest frame further includes an extension frame that has a frame shape that is wider than the main body frame.

[0003] The extension frame is fixed to the main frame by welding. The extension frame has protruding portions that protrude outward in the width direction from the main frame. These protruding portions provide the headrest frame with a shoulder support function that can support both shoulders of a seated occupant in addition to the head. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-81525 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the configuration described in Patent Document 1, both the main frame and the extension frame are made of pipe material. Therefore, it is difficult to weld them together in a state that ensures appropriate strength. Therefore, the present invention provides a headrest frame that can provide an overhanging portion to the main frame without welding. [Means for solving the problem]

[0006] To solve the above problems, the headrest frame of the present invention employs the following means.

[0007] That is, the first invention of the present invention is a headrest frame that forms the skeleton of a headrest, and has a main frame that includes a pair of widthwise legs that support the headrest, and a pair of widthwise protrusions that protrude from the pair of legs in a widthwise outward manner so as to bend.

[0008] According to the first aspect of the present invention, a main body frame having a pair of legs in the width direction can be provided with a pair of protruding portions that protrude outward in the width direction from each leg without welding.

[0009] A second invention of the present invention is a headrest frame according to the first invention, wherein a pair of the protrusions each have a lower edge that protrudes from the upper end of the corresponding leg so as to bend outward in the width direction, a side edge that extends from the protruding end of the lower edge so as to bend upward, and an upper edge that extends from the upper end of the side edge so as to bend inward in the width direction, and the main frame is formed by a pair of split frames that are divided into two in the width direction so as to separate the corresponding upper edges of the pair of protrusions, and has a first weld where the inner ends of the corresponding upper edges of the pair of split frames are welded together.

[0010] According to the second aspect of the present invention, a pair of protruding parts having a pair of lower sides, a pair of side sides, and a pair of upper sides that protrude in a bent shape from the upper ends of each leg can be provided to a main frame having a pair of legs in the width direction without welding. Moreover, by configuring such a main frame as a pair of divided frames that divide the upper sides of the pair of protruding parts, each divided frame can be easily formed with a shape that requires fewer bends.

[0011] A third invention of the present invention is a headrest frame according to the second invention above, wherein the corresponding inner ends of a pair of the split frames each have abutment surfaces that are flatly crushed so as to abut against each other in the fore-and-aft direction, and the abutting upper edges and lower edges are welded to each other by the first weld so as to extend along each edge.

[0012] According to the third aspect of the present invention, the inner ends of the separate frames can be brought into face-to-face contact with each other over a wide area in the front-to-rear direction, while the upper edges and lower edges of the separate frames can be welded over a wide area in the width direction of the frames. This allows the separate frames to be welded together in a manner that ensures appropriate strength.

[0013] A fourth invention of the present invention is a headrest frame according to the third invention, further comprising a panel frame that is connected so as to span between a pair of the protrusions, and a second weld portion at which one of the corresponding inner ends of the pair of dividing frames that are attached to each other from the front to the back, which is located at the front, is welded to an upper edge of the panel frame that is attached from the front along the one end, so that the second weld portion extends along each edge.

[0014] According to the fourth aspect of the present invention, the panel frame can be rationally and appropriately welded widely in the width direction to the main body frame without having to extend a protrusion far backward for welding to the main body frame.

[0015] The fifth invention of the present invention is a headrest frame according to the first invention above, further comprising a panel frame connected to span between a pair of the protrusions, each of the pair of protrusions having a lower edge that protrudes from the upper end of the corresponding leg so as to bend outward in the width direction, a side edge that extends from the protruding end of the lower edge so as to bend upward, and an upper edge that extends from the upper end of the side edge so as to bend inward in the width direction, the main frame being composed of a pair of split frames that are divided in two in the width direction so as to separate the corresponding upper edges of the pair of protrusions, and the pair of split frames being integrated with each other through connection to the panel frame.

[0016] According to the fifth aspect of the present invention, a pair of protruding parts having a pair of lower sides, a pair of side sides, and a pair of upper sides that protrude in a bent shape from the upper ends of each leg can be provided to a main frame having a pair of legs in the width direction without welding. Moreover, by configuring such a main frame as a pair of divided frames that divide the upper sides of the pair of protruding parts, each divided frame can be easily formed with a small number of bends. Furthermore, these divided frames can be rationally integrated via a panel frame that is connected to bridge the protruding parts.

[0017] A sixth invention of the present invention is a headrest frame according to any one of the second to fifth inventions above, wherein a pair of the protrusions each have a folding portion at the middle portion between the corresponding upper and lower edges, which is folded so as to position the corresponding side edge forward of the leg portion.

[0018] According to the sixth aspect of the present invention, the bent portions enable the protruding portions to function more appropriately as shoulder support portions or side support portions for the headrest.

[0019] The seventh invention of the present invention is a headrest frame according to any one of the second to fifth inventions above, wherein the corresponding upper and lower edges of a pair of the protrusions each have a non-downward shape extending in the width direction without any downward inclination across the entire width direction of the main frame.

[0020] According to the seventh aspect of the present invention, the protruding portions can be made to function more appropriately as shoulder support portions or side support portions of the headrest.

[0021] The eighth invention of the present invention is a headrest frame according to any one of the second to fifth inventions, wherein a pair of the protrusions extend continuously from a seatback pad, which is the padding material of the seat back, and support a headrest pad, which is the padding material of the headrest, from the back side of the pad.

[0022] According to the eighth aspect of the present invention, each protruding portion can be caused to function appropriately as a pad receiver for a so-called high-back seat in which the headrest is integrated with the seat back. [Brief description of the drawings]

[0023] [Figure 1] 1 is a perspective view illustrating a schematic configuration of a headrest frame according to a first embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 4 is a perspective view of FIG. 3 as seen from the rear side. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0025] First Embodiment (Schematic configuration of headrest frame 2F) First, the configuration of a headrest frame 2F according to a first embodiment of the present invention will be described with reference to Figs. 1 to 8. In the following description, when directions such as front, back, up, down, left and right are indicated, they refer to the respective directions shown in each drawing. The directions shown in each drawing are the directions seen by a seated occupant leaning against a seat back 1 equipped with the headrest frame 2F.

[0026] The left-right direction shown in each drawing corresponds to the seat width direction of the seat back 1. In the following description, when no specific reference drawing is shown or when no reference drawing has a corresponding reference symbol, any of Figures 1 to 8 will be referred to as appropriate.

[0027] 1 and 2, a headrest frame 2F according to this embodiment is configured as a framework of a headrest 2 of an automobile seat. The headrest 2 is integrated with an upper part of a seat back 1 and configured as a headrest portion of a so-called high back seat.

[0028] The seat back 1 has a metal seat back frame 1F that forms the skeleton of the seat back, a seat back pad 1P made of urethane foam that is placed over the seat back frame 1F from the front, and a seat back cover 1C made of synthetic leather that covers the seat back pad 1P.

[0029] 3 and 4, the seatback frame 1F is configured to be assembled into a frame shape in a front view that forms a skeleton along the periphery of the seatback 1. The seatback frame 1F is configured such that square cylindrical headrest support brackets 1B that serve as support members for the headrest 2 are welded to two positions on the left and right of an upper frame 1Fa that forms the upper part of the frame.

[0030] A headrest support 1S made of a resin rectangular tubular member is integrally attached to each headrest support bracket 1B within the headrest support bracket 1B. A pair of left and right legs 11 of a headrest frame 2F that forms the framework of the headrest 2 are inserted from above in the figure and integrally attached to the headrest supports 1S.

[0031] As shown in Figures 1 and 2, the headrest 2 has a metal headrest frame 2F that forms the skeleton of the headrest, a urethane foam headrest pad 2P that covers the headrest frame 2F from the front, and a synthetic leather headrest cover 2C that covers the headrest pad 2P.

[0032] The headrest pad 2P is configured as a pad material that extends continuously from the seat back pad 1P. Specifically, the headrest pad 2P is configured to be seamlessly and integrally connected to the seat back pad 1P over the entire area in the seat width direction.

[0033] The headrest cover 2C is also configured as a covering material that extends continuously from the seat back cover 1C. Specifically, the headrest cover 2C is configured to be seamlessly and integrally connected to the seat back cover 1C over the entire area in the seat width direction.

[0034] With such a configuration, the headrest 2 is adapted to receive the load of the seated occupant's head leaning against it by the headrest frame 2F via the headrest pad 2P. The headrest 2 is also adapted to receive the load of the seated occupant's upper back, such as both shoulders, leaning against the seat back 1 by the headrest frame 2F via the headrest pad 2P that is integrally connected to the seat back pad 1P.

[0035] (Details of headrest frame 2F) 3 and 4, the headrest frame 2F has a main body frame 10 made of a pipe material bent to fit the periphery of the headrest 2, and a planar panel frame 20 joined to cover the front side of the main body frame 10. The main body frame 10 has a pair of widthwise and heightwise extending legs 11, and a pair of widthwise protrusions 12 bent from the upper ends of the legs 11 to protrude outward in the width direction and connected to form a horizontally elongated frame shape.

[0036] The panel frame 20 is made of a single panel material that is bent into a bilaterally symmetrical shape. The panel frame 20 is joined so as to span between the protruding parts 12 of the main frame 10. As a result, the panel frame 20 is provided so as to cover the horizontally long inside of the frame between the protruding parts 12 of the main frame 10 in a planar manner.

[0037] A resin panel 30 having a horizontally long plate shape that conforms to the frame shape of the main body frame 10 is attached to the front of the panel frame 20. The resin panel 30 is set so as to cover the panel frame 20 from the front side, and is fixed integrally thereto by clips (not shown).

[0038] The resin panel 30 functions as a pad receiver that flatly supports the headrest pad 2P (see Figs. 1 and 2) from the rear side. The resin panel 30 also functions as a cover fastening part that fastens a hanging part (not shown) sewn between some of the cover pieces of the headrest cover 2C by hanging it.

[0039] In this way, the panel frame 20 functions as an attachment section to which the resin panel 30, which functions as the pad receiver and cover fastening section described above, can be connected with a clip (not shown). The panel frame 20 has a main panel 21 extending in the width direction between the pair of legs 11, and a pair of widthwise protruding panels 22 extending from the main panel 21 so as to protrude outward on both sides in the width direction.

[0040] The panel frame 20 is integrally joined to the main body frame 10 by welding various parts of its peripheral portion to each of the overhanging portions 12 of the main body frame 10. The panel frame 20 is also configured to integrally connect a pair of left and right divided frames 10A constituting the main body frame 10 by welding to each of the overhanging portions 12 of the main body frame 10. The detailed configurations of the main body frame 10 and the panel frame 20 will be described below.

[0041] 3 and 4, each overhanging portion 12 of the main body frame 10 has a lower side 12A that overhangs from the upper end of the corresponding leg portion 11 so as to bend at a right angle outward in the width direction, and a side side 12B that extends upward so as to bend at a right angle from the overhanging end of the lower side 12A. In addition, each overhanging portion 12 of the main body frame 10 has an upper side 12C that extends from the upper end of the corresponding side side 12B so as to bend at a right angle inward in the width direction.

[0042] The main body frame 10 has a shape in which the upper sides 12C of the overhanging portions 12 are connected to each other. As shown in Fig. 5, the main body frame 10 is composed of a pair of divided frames 10A that are divided into two in the width direction so as to separate the upper sides 12C of the overhanging portions 12.

[0043] The separate frames 10A are configured to have substantially symmetrical shapes relative to one another. The separate frames 10A are joined together by overlapping and welding the inner ends C1 of the respective upper sides 12C.

[0044] 6 to 8, in detail, the inner ends C1 of the divided frames 10A are not butted against each other in the width direction, but are overlapped front-to-back and welded to provide an overlap in the width direction. The abutment surfaces C2 of the inner ends C1 of these divided frames 10A that are overlapped front-to-back are flatly crushed so that they abut against each other in the front-to-back direction.

[0045] Each split frame 10A is abutted against each other with the abutment surfaces C2 formed on each inner end C1, and the abutting upper edges and lower edges are arc-welded to extend in the width direction along each edge (first welded part W1).

[0046] As shown in Fig. 6, the projection 12 of each divided frame 10A has a bent portion 12D formed at an obtuse angle at each intermediate portion of the upper side 12C and the lower side 12A thereof so that the corresponding side 12B is positioned forward of the leg portion 11. As shown in Fig. 8, due to these bent portions 12D, the projection 12 of each divided frame 10A is formed such that the portion outside the bent portion 12D extends straight diagonally forward from the bent portion 12D. The projections 12 project diagonally forward to provide appropriate support for the shoulders of a seated occupant (shoulder support) and support for the side of the head (side support).

[0047] 6 and 7, the panel frame 20 is made of a single panel material in which the above-mentioned main body panel 21 and a pair of widthwise protruding panels 22 extend continuously. The panel frame 20 is joined so as to bridge between each upper side 12C and each lower side 12A of the main body frame 10. The panel frame 20 is also joined so as to bridge between the right side 12B and the left side 12B of the main body frame 10 in the drawing.

[0048] Specifically, the panel frame 20 has a pair of lower edge abutment portions 22A in the width direction that extend downward from the lower edge of each protruding panel 22 so as to abut against each lower edge 12A of the main frame 10 from the front side. The panel frame 20 also has a pair of upper edge abutment portions 22B in the width direction that extend upward from the upper edge of each protruding panel 22 so as to abut against each upper edge 12C of the main frame 10 from the front side.

[0049] 8, each of the upper-side contact portions 22B has an upper edge that is curved backward so as to face-contact, from the front end to the top end, with the curved outer circumferential surface of each of the upper sides 12C of the main body frame 10. Therefore, by bringing each of the upper-side contact portions 22B into face-contact with each of the upper sides 12C of the main body frame 10, the panel frame 20 can be set in a state in which it is positioned in the height direction relative to the main body frame 10.

[0050] 6 to 7, the panel frame 20 has a pair of widthwise side abutment portions 22C that protrude outward from the outer edges of the respective protruding panels 22 so as to abut against the respective side edges 12B of the main frame 10 from the inside. Each side abutment portion 22C is configured to have a bent portion 23 formed at a midpoint of its outward protrusion so that the protrusion beyond that point faces forward. As a result, each side abutment portion 22C is configured to be set so that the front edge of the end bent forward abuts against the corresponding side edge 12B of the main frame 10 from the inside in the width direction.

[0051] Therefore, by abutting each side contact portion 22C against each side 12B of the main body frame 10, the panel frame 20 can be set in a state where it is positioned in both width directions relative to the main body frame 10. The bent portion 23 of each side contact portion 22C is located widthwise outside the formation location of the corresponding bent portion 12D of the main body frame 10 and widthwise inside the corresponding side 12B.

[0052] The panel frame 20 is welded to the main body frame 10 at the following locations. That is, by assembling the panel frame 20 to the main body frame 10, the panel frame 20 is set in a state in which a central upper edge portion extending in a recessed shape in the width direction between each of the upper edge abutment portions 22B is abutted from the front along each of the upper edges 12C of the main body frame 10. The panel frame 20 is arc-welded such that the portions of the inner ends C1 of each of the upper edges 12C of the main body frame 10 that abut from the front against the inner end C1 located on the front side extend in the width direction along the edges of the abutting locations (second welded portion W2).

[0053] Furthermore, the panel frame 20 is welded such that the contact points between each bottom-side contact portion 22A and each bottom side 12A of the main body frame 10 extend in the width direction along the edges of these contact points (bottom-side welded portion W3). Specifically, each bottom-side contact portion 22A is arc-welded such that the contact points between the upper edges of elongated holes extending in the width direction and each bottom side 12A of the main body frame 10, which are formed at locations facing the bottom sides 12A of the main body frame 10 from the front, extend in the width direction along these contact points.

[0054] 6 and 8, the panel frame 20 is arc-welded such that the contact points between each top-side contact portion 22B and each top side 12C of the main body frame 10 extend in the width direction along the edges of these contact points (top-side welded portion W4). Also, as shown in Figs. 6 to 7, the panel frame 20 is arc-welded such that the contact points between each side-side contact portion 22C and each side side 12B of the main body frame 10 extend in the height direction along the edges of these contact points (side-side welded portion W5).

[0055] These welds ensure that the panel frame 20 is properly and firmly welded to the main body frame 10, which is made up of a pair of divided frames 10A divided in two in the width direction. Because the main body frame 10 is made up of a pair of divided frames 10A divided in two in the width direction, each can be easily shaped with a small number of bending operations.

[0056] That is, even if the main body frame 10 has a pair of widthwise extensions 12 that extend from a pair of widthwise legs 11 into a horizontally long frame shape, the above-mentioned two-part configuration allows each part to be easily shaped with a small number of bending operations. Therefore, the main body frame 10 having the above shape can be easily and appropriately shaped without enlarging the size of the molding die for bending the main body frame 10.

[0057] As shown in Fig. 7, the main body frame 10 has a non-downward shape in which the lower side 12A and the upper side 12C of each overhanging portion 12 extend in the width direction without inclining downward over the entire width of the main body frame 10. With this configuration, the main body frame 10 is less likely to interfere with the seat back frame 1F (see Figs. 3 and 4) compared to a case in which the lower side 12A of each overhanging portion 12 has a shape with a downward incline. Therefore, the headrest frame 2F can be disposed at an appropriate height position to allow each overhanging portion 12 to function more appropriately as a shoulder support portion or a side support portion for the headrest 2.

[0058] 6 to 7, a pad receiving wire 24 is welded to the lower front surface of the panel frame 20. The pad receiving wire 24 extends obliquely downward and forward from the panel frame 20 so as to project in a U-shape when viewed from the front. The pad receiving wire 24 is formed by bending a single wire material into a U-shape when viewed from the front.

[0059] Both ends of the pad receiving wire 24 are welded to the front surface of the panel frame 20 at positions that are outboard of the legs 11 in the width direction and inboard of the bottom edge welded portions W3 of the panel frame 20. The pad receiving wire 24 is a member that functions as a pad receiving member that supports, from the rear side, the headrest pad 2P and the seat back pad 1P that is continuous with the headrest pad 2P described above in Figs. 1 and 2.

[0060] To sum up, the headrest frame 2F according to this embodiment is configured as follows: In the following, the reference characters in parentheses correspond to the respective components shown in the above embodiment.

[0061] That is, the headrest frame (2F) forming the framework of the headrest (2) has a main body frame (10) including a pair of widthwise legs (11) that support the headrest (2) and a pair of widthwise projections (12) that project so as to bend outward in the width direction from the pair of legs (11). According to the above configuration, the pair of projections (12) that project outward in the width direction from each of the legs (11) can be provided to the main body frame (10) that includes the pair of widthwise legs (11) without welding.

[0062] The pair of overhanging portions (12) each have a lower side (12A) that overhangs from the upper end of the corresponding leg portion (11) so as to bend outward in the width direction, a side side (12B) that extends from the overhanging end of the lower side (12A) so as to bend upward, and an upper side (12C) that extends from the upper end of the side side (12B) so as to bend inward in the width direction. The main frame (10) is composed of a pair of divided frames (10A) that are divided into two in the width direction so as to separate the corresponding upper sides (12C) of the pair of overhanging portions (12), and has a first welded portion (W1) where the inner ends (C1) of the corresponding upper sides (12C) of the pair of divided frames (10A) are welded to each other.

[0063] According to the above configuration, a pair of protruding parts (12) each having a pair of lower sides (12A), a pair of side sides (12B) and a pair of upper sides (12C) protruding in a bent shape from the upper end of each leg part (11) can be provided to a main frame (10) having a pair of legs (11) in the width direction without welding. Furthermore, by configuring such a main frame (10) with a pair of divided frames (10A) that divide the upper sides (12C) of the pair of protruding parts (12), each divided frame (10A) can be easily formed with a shape that requires fewer bends.

[0064] In addition, the corresponding inner ends (C1) of the pair of split frames (10A) each have abutment surfaces (C2) that are flatly crushed so as to face-contact each other in the front-rear direction, and the face-contacting upper edges and lower edges are welded by the first welded parts (W1) so as to extend along the respective edges. With this configuration, the inner ends (C1) of the split frames (10A) can be widely face-contacted in the front-rear direction, while the upper edges and lower edges can be widely welded in the respective extending width directions. This allows the split frames (10A) to be welded together so as to ensure appropriate strength.

[0065] The headrest frame (2F) further includes a panel frame (20) that is joined so as to span between the pair of overhanging portions (12), and a second welded portion (W2) that is welded to extend along the edges of one of the inner ends (C1) of the pair of divided frames (10A) that are attached to each other from the front to the rear, and the upper edge of the panel frame (20) that is attached from the front along this one end. With the above configuration, the panel frame (20) can be rationally and appropriately welded to the main frame (10) widely in the width direction without having to extend the overhang of the panel frame (20) far backward for welding to the main frame (10).

[0066] In addition, the pair of separate frames (10A) are integrated with each other through connection with the panel frame (20). According to the above-described configuration, the pair of separate frames (10A) can be rationally integrated with each other through the panel frame (20) that is connected so as to bridge the area between the overhanging portions (12) of the separate frames (10A).

[0067] Moreover, the pair of overhanging portions (12) each have a bent portion (12D) at the middle portion between the corresponding upper side (12C) and lower side (12A) so as to bend the corresponding side edge (12B) forward of the leg portion (11). According to the above configuration, the bent portion (12D) allows each overhanging portion (12) to function more appropriately as a shoulder support portion or a side support portion for the headrest (2).

[0068] In addition, the corresponding upper and lower sides (12C and 12A) of the pair of projections (12) are each formed in a non-downward shape that extends in the width direction without any downward inclination over the entire width direction of the main frame (10). According to the above configuration, each projection (12) can function more appropriately as a shoulder support or a side support for the headrest (2).

[0069] In addition, the pair of overhanging portions (12) extend continuously from the seat back pad (1P), which is the padding material of the seat back (1), and support the head rest pad (2P), which is the padding material of the head rest (2), from the back side of the pad. According to the above configuration, each overhanging portion (12) can function appropriately as a pad receiver for a so-called high back seat in which the head rest (2) is integrated with the seat back (1).

[0070] Other embodiments Although one embodiment of the present invention has been described above, the present invention can be embodied in various forms other than the above embodiment.

[0071] 1. The headrest frame of the present invention may be applied to seats installed in vehicles other than automobiles, such as trains, as well as seats installed in vehicles other than vehicles, such as airplanes and ships. The headrest frame may also be applied to seats installed in various facilities, such as sports facilities, theaters, concert halls, and event halls, as well as non-vehicle seats, such as massage seats.

[0072] Further, the headrest frame can be applied not only to so-called high back seats, but also to headrests of a type in which the headrest is detachably attached to the upper part of the seat back.

[0073] 2. The main frame may be made of a pair of split frames divided in two widthwise, or may be made of a single pipe. The pair of protruding parts may be protruding so as to bend outward in the width direction from the upper ends of the pair of legs, or may be protruding so as to bend outward in the width direction from the middle of the pair of legs in the height direction.

[0074] The pair of overhanging parts may be configured to bend from the pair of legs in a direction other than the outer side in the width direction, and then bend further outward in the width direction than the pair of legs. The pair of overhanging parts may be configured not to have bending parts at the middle parts of their upper and lower sides that bend to position the corresponding side sides forward of the legs.

[0075] 3. The pair of split frames may be overlapped in the front-to-rear direction and welded together with an overlap in the width direction, or may be bolted together. One may be inserted into the other pipe and welded. The pair of split frames may be crushed flatly so that they come into face-to-face contact in the front-to-rear direction and welded together, or may be welded so that they come into line contact without being crushed together.

[0076] 4. The panel frame may be connected to bridge only between the upper and lower sides of each protruding portion of the main frame. Also, the panel frame may be connected to bridge only between the side sides of each protruding portion of the main frame. [Explanation of symbols]

[0077] 1 Seat back 1F Seat back frame 1Fa Upper Frame 1B Headrest support bracket 1S Headrest Support 1P Seat Back Pad 1C Seat back cover 2 Headrest 2F Headrest frame 2P Headrest Pad 2C Headrest Cover 10 Main frame 10A Split Frame 11 Legs 12 Overhang 12A Bottom 12B Side 12C Top C1 Inner end C2 Contact surface 12D bent part 20 Panel Frame 21 Main Panel 22 Extension Panel 22A Bottom contact part 22B Upper edge contact part 22C Side contact part 23 Bend section 24 Pad support wire 30 Resin Panel W1 First weld W2 Second weld W3 Bottom weld W4 Top edge weld W5 Side Weld

Claims

1. A headrest frame that forms a skeleton of a headrest, The headrest frame has a main body frame including a pair of widthwise legs that support the headrest, and a pair of widthwise extensions that extend outward in the widthwise direction so as to bend from the pair of legs.

2. 2. The headrest frame according to claim 1, Each of the pair of protruding portions has a lower side protruding from an upper end of the corresponding leg portion so as to bend outward in the width direction, a side side extending from the protruding end of the lower side so as to bend upward, and an upper side extending from an upper end of the side side so as to bend inward in the width direction, The headrest frame has a main body frame formed of a pair of split frames divided in two in the width direction so as to separate the corresponding upper edges of a pair of the protrusions, and has a first weld portion where the inner ends of the corresponding upper edges of the pair of split frames are welded to each other.

3. 3. The headrest frame according to claim 2, A headrest frame in which the corresponding inner ends of a pair of the divided frames each have abutment surfaces that are flatly crushed so as to abut against each other in the fore-and-aft direction, and the abutting upper edges and lower edges are welded to each other by the first weld so that they extend along the respective edges.

4. 4. The headrest frame according to claim 3, a panel frame connected to span the pair of overhanging portions; The headrest frame further includes a second weld portion at which one end of the corresponding inner ends of the pair of dividing frames that are attached to each other from the front to the back and the upper edge of the panel frame that is attached from the front along the one end is welded so as to extend along each edge.

5. 2. The headrest frame according to claim 1, The panel frame is connected so as to span between the pair of overhanging portions, Each of the pair of protruding portions has a lower side protruding from an upper end of the corresponding leg portion so as to bend outward in the width direction, a side side extending from the protruding end of the lower side so as to bend upward, and an upper side extending from an upper end of the side side so as to bend inward in the width direction, The headrest frame is configured such that the main body frame is divided into two in the width direction so as to separate the corresponding upper edges of a pair of the protrusions, and the pair of the divided frames are integrated with each other via being connected to the panel frame.

6. A headrest frame according to any one of claims 2 to 5, The headrest frame includes a pair of protruding portions each having a bent portion at a middle portion between the corresponding upper side and lower side so that the corresponding side side is positioned forward of the leg portion.

7. A headrest frame according to any one of claims 2 to 5, A headrest frame in which the corresponding upper and lower sides of a pair of the projections each have a non-downward shape that extends in the width direction without inclining downward across the entire width of the main frame.

8. A headrest frame according to any one of claims 2 to 5, The pair of protruding portions extend continuously from a seat back pad, which is a padding material of the seat back, and support a head rest pad, which is a padding material of the head rest, from the rear side of the pad.

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