JP2006006523A - Surface integrated foam molding headrest and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a surface integrated foam molding headrest preventing the forming of appearance defects such as meandering, recesses/projections, or the like in an opening part of the surface without any labor and improving the merchantability of the external appearance. <P>SOLUTION: This surface integrated foam molding headrest 1 is provided with a surface 2 formed by forming a surface member into a bag shape, a cushion material 9 integrally foamed by filling the inside of the surface 2 with foaming synthetic resin 9a, and a headrest stay 8 extending from the surface 2 to the outside. The bag-shaped surface 2 is provided with the opening part 6 for reversing the front/back, the opening part 6 is formed by folding a pair of ends 3a and 4a of a main member 3 and a lower member 4 so as to oppositely intrude in the inside space of the bag-shaped surface 2, is formed with an engagement portion 23b in the end 23a, is formed with an engagement object portion 24b in the end 24a, and formed by engaging the engagement portion 23b with the engagement object portion 24b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a headrest and a method for manufacturing the headrest, and more particularly to a skin-integrated foam-molded headrest formed by injecting a foamed synthetic resin into a bag-shaped skin and integrally foaming a cushion material, and a method for manufacturing the headrest.

  Conventionally, a skin-integrated foam headrest has a bag-shaped skin formed by sewing a plurality of skin members, and the skin is assembled into a mold of a mold, and a foamed synthetic resin is filled into the skin from a resin injection nozzle. The cushioning material and the skin are integrally formed by foaming the foamed synthetic resin integrally with the skin.

In order to prevent the foamed synthetic resin from leaking to the outside from the opening of the skin, the opening is formed so that the ends (sealing allowance) of the skin are folded inward and brought into contact with each other. .
However, due to the influence of the shape of the headrest, the opening is in an open state, the bending direction of the end of the opening is not stable, and there is a possibility that an appearance defect near the opening of the product may occur. That is, there is a possibility that meandering may occur in the opening, and floating or unevenness may occur.

  In order to prevent the occurrence of the above-mentioned appearance defects, a shape holding member such as a resin plate, board, urethane or the like is sewn to the end portion so as to hold the shape of the end portion, or the opening portion is fixed with a resin clip. I was doing.

In addition, the sewing thread is sewed once along the end with the end opened, and tension is applied by pulling the end outward, and the opening is sealed by applying the tension. There has been proposed a technique in which an injected foamed synthetic resin is integrally foamed with a skin (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 10-14707 (page 2-4, FIG. 1)

  In order to prevent the occurrence of the above-mentioned poor appearance, it is necessary to sew or fix other members to the end portion in the method using other shape holding members or resin clips, the number of parts increases, There was a problem that it took time and effort.

  Further, in the technique of Patent Document 1, it is necessary to apply tension to the opening when sewing the sewing thread around the end and further foaming the foamed synthetic resin and the skin integrally, which takes time for manufacturing. There was a problem.

  In view of the above problems, the object of the present invention is to prevent the occurrence of appearance defects such as meandering and unevenness in the opening of the skin without taking time and improve the appearance of the product. An object of the present invention is to provide a foam molded headrest and a method of manufacturing the headrest.

  According to the present invention, the above-described problems are achieved by a skin formed by forming a skin member in a bag shape, a cushion material in which foamed synthetic resin is injected into the skin and integrally foamed, and the skin extends outside. The bag-shaped skin has an opening for reversing the front and back, and the opening enters into the inner space of the bag-shaped skin. The pair of end portions of the skin member are bent and formed so as to face each other, and an engagement portion is formed on one of the pair of end portions of the skin member, and an engaged portion is formed on the other side. This is solved by engaging the engaging part and the engaged part.

  As described above, in the present invention, the engaging portion and the engaged portion that engages with the engaging portion are formed on the pair of end portions that are folded inward that constitute the opening portion of the epidermis. The cushion material is disposed inside the skin in a state where the portion and the engaged portion are engaged.

  Thus, in the present invention, since the opening is held closed by the engagement of the engaging portion and the engaged portion, the foamed synthetic resin leaks from the opening to the outside at the time of manufacture. Appearance defects such as meandering and unevenness can be prevented, and the appearance near the opening of the product is improved.

  Specifically, the engaging portion and the engaged portion can be formed by cutting each pair of end portions of the skin member. In this way, since the engaging portion and the engaged portion are formed by cutting each end portion, the forming process is simple. Further, since no other constituent members are used, the number of parts does not increase.

  Further, the engaging portion is formed by cutting one of the pair of end portions of the skin member at two locations from the end side of the end portion, and the engaged portion is a pair of the skin member. It can form by making the notch which can insert the said engaging part along this edge part side in the position spaced apart from the edge part side of this edge part in the other end part of this edge part.

  In this way, an insertion portion is formed at one end by making cuts at two locations from the end side, and a cut is made at the other end along the end side by cutting. An insertion part can be formed. By inserting the insertion portion into the insertion portion, the end portions can be brought into close contact with each other, and the opening portion can be held closed.

  In addition, according to the present invention, a bag-like skin is formed from a skin member, the skin is disposed in a molding die, and a foamed synthetic resin is injected into the skin to integrally foam a cushion material. In the manufacturing method of the skin-integrated foam headrest formed by bending the pair of end portions of the skin member so as to face into the inner space of the bag-shaped skin, the front and back of the bag-shaped skin are An opening for reversing is formed, an engaging portion is formed on one of the pair of end portions of the skin member, an engaged portion is formed on the other, the engaging portion and the engaged portion And the foamed synthetic resin is injected into the inside of the skin.

  As described above, in the present invention, the engaging portion and the engaged portion that engages with the engaging portion are formed on the pair of end portions that are folded inward that constitute the opening portion of the epidermis. After the part and the engaged part are engaged to close the opening, the foamed synthetic resin is injected into the skin.

  As described above, in the present invention, the opening is held closed by providing the engaging portion and the engaged portion and engaging each other, so that the foamed synthetic resin is prevented from leaking from the opening to the outside. In addition, appearance defects such as meandering and unevenness can be prevented from occurring in the opening, and the appearance near the opening of the product can be improved.

  Specifically, the engaging portion and the engaged portion can be formed by cutting each pair of end portions of the skin member.

  Further, the engaging portion is formed by cutting one of the pair of end portions of the skin member at two locations from the end side of the end portion, and the engaged portion is a pair of the skin member. It can form by making the notch which can insert the said engaging part along this edge part side in the position spaced apart from the edge part side of this edge part in the other end part of this edge part.

  In the skin-integrated foam-molded headrest of the present invention, an engaging portion is formed on one end of the skin, an engaged portion is formed on the other, and the engaging portion and the engaged portion are engaged. Thus, it can be manufactured by holding the opening in a closed state.

  Therefore, in the skin-integrated foam-molded headrest of the present invention and the method for manufacturing the headrest, it is possible to prevent appearance defects such as meandering and unevenness in the opening of the skin without taking time and improve the appearance merchandise of the product. be able to.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.

  FIGS. 1 to 9 relate to an embodiment of the present invention, FIG. 1 is an explanatory diagram of a headrest, FIG. 2 is an explanatory diagram of a back member, FIGS. 3 and 4 are explanatory diagrams of a skin, FIGS. 7 is an explanatory view showing an end processing step, and FIGS. 8 and 9 are explanatory views showing a resin injection step. 10 and 11 are explanatory views of a skin of a headrest according to another embodiment of the present invention.

  The present embodiment is an example applied to a headrest 1 for a vehicle seat as shown in FIG. The headrest 1 includes an outer skin 2 obtained by cutting a single skin material such as a fabric and sewing them into a bag shape, a headrest stay 8, and a cushion material 9.

  The skin 2 is formed by cutting the main member 21, the back members 22, 23, 24 and the side members 25, 26 into predetermined shapes, and the main member 21, the back members 22, 23, 24, and the side members 25, 26. Of these, except for some end portions (sealing allowances) 23a and 24a (see FIG. 2 and the like), the end portions are respectively sewn and formed into a bag shape.

  The pair of end portions 23a and 24a with which the back members 23 and 24 are abutted are bent to face each other so as to enter the internal space of the bag-shaped skin 2 to form an opening 6. As shown in FIG. 1, the opening 6 forms an opening between the back members 23 and 24, and is formed at the center between the side members 25 and 26. In addition, in this example, although the opening part 6 is formed in the center part between the side members 25 and 26, it is not restricted to this, You may form in the position near either one.

  The headrest stay 8 in this example is formed by axially bending a metal bar or pipe material. As shown in FIG. 1, the headrest stay 8 extends from a U-shaped base frame portion 8a and both ends of the base frame portion 8a. It is provided with supporting column parts 8b and 8c. The base frame portion 8a is embedded in the headrest 1, extends in the horizontal direction with respect to the headrest 1, and connects the column portions 8b and 8c. The column portions 8b and 8c are inserted from the insertion holes 23c formed in the back member 23, penetrate the back member 3a, and are exposed to the outside. The main member 2a is a part that comes into contact with the head of the occupant.

  In this example, the base frame portion 8a is formed to extend downward from the end portions of the support column portions 8b and 8c by a predetermined length, and the extended end portions are connected to each other. Instead, the end portions of the support columns 8b and 8c may be directly connected to each other.

Next, the manufacturing method of the headrest 1 of this invention is demonstrated.
First, the single skin material is cut to form the main member 21, the back members 22, 23 and 24, and the side members 25 and 26.

  As shown in FIG. 2, the back members 23 and 24 are cut so that the end portions 23a and 24a protrude. The end portions 23a and 24a are for forming the opening 6 located in the central portion on the back side of the headrest 1 as described above. In the present embodiment, the engagement portion (insertion portion) 23b is formed by making cuts symmetrically in two places spaced apart in the length direction of the end portion 23a. The engaging portion 23b is formed with a cut in a direction that spreads outside, that is, a C-shaped cut.

  The end 24a is cut at a position shifted by a predetermined distance from the end side so as to be substantially parallel to the end side to form an engaged portion (inserted portion) 24b. In the case of this example, the engaged portion 24b is formed by cutting a half length of the end portion 24a in the center portion in the width direction of the end portion 24a (the left-right direction of the headrest 1). The width of the engaged portion 24b is set to be wider than the distance between the cut ends of the engaging portion 23b (the width on the narrow side of the engaging portion 23b).

  Further, in the case of this example, the shift amount from the end side of the engaged portion 24b is about half of the length of the end portion 24a (vertical direction in the figure), and is shorter than the length of the end portion 24a. Has been. This shift amount is set to be equal to or shorter than the distance from the end side of the end portion 23a to the end of the notch for forming the engaging portion 23b.

Thus, by forming the engaging portion 23b and the engaged portion 24b, the engaging portion 23b can be passed through the notch of the engaged portion 24b and the end portions 23a and 24a can be engaged.
In this example, the engaging portion 23 b and the engaged portion 24 b are formed in the central portion of the opening 6, but are not necessarily formed in the central portion of the opening 6. In this example, the C-shaped notch is formed to form the engaging portion 23b. However, the present invention is not limited to this, and two notches that are substantially perpendicular to the end side may be formed.

  Next, the end portions of the main member 21, the back members 22, 23, and 24 and the side members 25 and 26 are overlapped and sewn. As shown in FIGS. Form. FIG. 4 is a view of FIG. 3 viewed from another direction. At this time, the end sides of the end portions 23a and 24a are not sewn except for the left and right end portions, and form an opening 6 communicating with the inside.

  3 and 4, the skin 2 is in an inverted state. The end portions 23a and 24a protrude outward due to the rigidity of the member. In the figure, reference numeral 7 denotes a suture line where each member is sewn. Reference numeral 7 a denotes a suture line in which the back members 23 and 24 are sewn in the vicinity of the opening 6.

  Then, the inverted skin 2 is reversed through the opening 6 so that the surface is exposed, and the end portions 23a and 24a are pushed into the bag-shaped skin 2. When the epidermis 2 is turned over so that the surface is exposed, the suture lines 7 and 7a are hidden inside the epidermis 2 and cannot be seen from the outside.

  In this state, the headrest stay 8 is attached to the skin 2. The headrest stay 8 is attached by first inserting the end portion of the column portion 8b (or column portion 8c) into one of the insertion holes 23c opened in the back member 22, and connecting the column portion 8b (or column portion 8c) to the base. The frame portion 8a is pushed into the skin 2. At the same time as pushing into the inside of the skin 2, the end of the column part 8b (or the column part 8c) pushed into the inside of the skin 2 is pulled out from the other insertion hole 23c. In this way, the headrest stay 8 can be attached to the skin 2.

Next, as shown in FIGS. 5 to 7, the engaging portion 23b is engaged with the engaged portion 24b. 5 to 7 show a state in which the vicinity of the opening 6 is viewed from the inside of the skin 2 for easy understanding.
First, as shown in FIG. 5, the back members 23 and 24 are pulled to widen the opening 6.

  Then, as shown in FIG. 6, one end of the engaging portion 23b is inserted into the engaged portion 24b. Further, as shown in FIG. 7, the other end of the engaging portion 23b is inserted into the engaged portion 24b. Thereby, the engaging portion 23b is engaged with the engaged portion 24b, the end portion 23a and the end portion 24a are brought into close contact with each other, and the opening 6 is closed.

With the engaging portion 23b engaged with the engaged portion 24b, the skin 2 is assembled to the mold 10 as shown in FIG.
The molding die 10 has a die body 11 having a cavity space corresponding to the outer shape of the headrest 1 and a lid die 12 capable of closing the opening surface of the die body as an outer frame, and the headrest stay 8 is supported by struts 8b and 8c. A clamping jig (not shown) for positioning and holding is provided on the plate surface of the lid mold 12.

  The lid mold 12 includes a lid mold main body 12a and slide plates 13a and 13b. The slide plates 13a and 13b are supported by a frame member 14 so as to be close and separable so as to open and close near the center of the mold main body 11. ing.

  Further, when the slide plates 13a and 13b are separated from each other, the leading edge is inserted between the engaging portion 23b of the end portion 23a and the engaged portion 24b of the end portion 24a, so that the engaging portion 23b and the engaged portion 24b are engaged. The latch plates 15a and 15b that expand and hold the opening 6 narrowed by engagement with the skin 2 as the opening of the skin 2 are lowered or separated from the mold body 11, and the slide plates 13a and 13b. It is equipped to move close and away in the same direction.

  Using this mold 10, first, the skin 2 to which the headrest stay 8 is attached is assembled in the cavity space of the mold body 11, and then the column portions 8 b and 8 c of the headrest stay 8 are notched in the notch holes (not shown in the figure). The lid mold 12 is closed by protruding outward from the figure.

  At this time, as described above, the end portion 23a and the end portion 24a are brought into close contact with each other by the engagement between the engaging portion 23b and the engaged portion 24b, whereby the opening 6 is held in a closed state. .

  Next, as shown in FIG. 8, the slide plates 13 a and 13 b are separated from each other, and the latch plates 15 a and 15 b are moved downward and separated to move the leading edges to the engagement portions 23 b of the end portions 23 a and the end portions 24 a. The opening 6 narrowed by the engagement between the engaged portion 23b and the engaged portion 24b is expanded and held between the engaged portion 24b and the engaged portion 24b.

  In this state, as shown in FIG. 9A, the nozzle tip of the resin injection nozzle 18 is lowered toward the opening 6 of the skin 2, and a foamed synthetic resin 9a such as foamed urethane is injected into the skin 2. .

  After filling the inside of the skin 2 with a predetermined amount of the foamed synthetic resin 9a, as shown in FIG. 9 (B), the resin injection nozzle 18 and the latch plates 15a and 15b are retreated upward from the mold 10, and the slide plate 13a and 13b are moved close to each other and the mold 10 is clamped. When the mold is clamped, the engaging portion 23b of the end portion 23a and the engaged portion 24b of the end portion 24a come into contact with each other, and the opening 6 is linearly closed.

When the foamed synthetic resin 9a filled inside the skin 2 is foamed, the headrest 1 in which the cushion material 9 and the skin 2 are integrally molded is manufactured.
The headrest 1 obtained in this way has the opening 6 linearly closed, does not cause meandering or unevenness, and has a good appearance.

  When the engaging portions and the engaged portions are not provided in the end portions 23a and 24a as in the conventional case, the opening portion is opened when the mold 10 is set due to the influence of the shape of the headrest 1. The influence of the shape of the headrest 1 is, for example, a case where the vicinity of both sides in the length direction of the opening 6 is formed in a curved shape or a case where the opening 6 is long.

  For this reason, in the conventional skin, when foaming synthetic resin is inject | poured inside and it is made to foam, it becomes easy to leak foaming synthetic resin from an opening part. Further, in the conventional skin, since the opening is not linearly closed, the opening may be meandered or uneven, resulting in a poor appearance.

  On the other hand, in the skin 2 of the present example, the end portions 23a and 24a are provided with the engaging portions 23b and the engaged portions 24b as described above, and are configured to engage with each other. Even when the ends 23a and 24a are bent due to the shape of the headrest when set, the ends 23a and 24a can be held in contact with each other. Thereby, the opening part 6 is hold | maintained in the state closed linearly by planar view.

  Since the opening 6 is held in a linearly closed state, in the method of manufacturing the headrest 1 of this example, when the resin is injected, the foamed synthetic resin leaks from the opening 6 or the vicinity of the opening 6 of the product is The headrest 1 having a good appearance can be produced without causing the problem of meandering or unevenness.

  Further, in the method of manufacturing the headrest 1 of this example, in order to improve the appearance near the opening 6, the end portions 23a and 24a are cut, and the engaging portion 23b and the engaged portion 24b are provided. Is configured to engage. And the engaging part 23b and the to-be-engaged part 24b can be formed by making a notch | incision at the time of the cutting | disconnection of the back members 23 and 24, and a man-hour hardly increases and does not take an effort. Moreover, since it is not the structure which uses another member, the increase in a number of parts and the increase in a man-hour do not generate | occur | produce, and it can manufacture at low cost.

In the above embodiment, the engaging portion 23b is provided at the end portion 23a and the engaged portion 24b is provided at the end portion 24a. However, the present invention is not limited to this, and the end portion 23a is cut substantially parallel to the end side. Alternatively, the engaged portion may be provided, and the engagement portion may be provided by making a C-shaped cut into the end 24a.
Further, the engaged portion 24b is formed by making a linear cut, but if the engagement portion 23b can be engaged, for example, a V-shape or a U-shape is cut along the end side. To be engaged may be formed.

Moreover, you may form an engaging part and an engaged part as shown in FIG. 10, FIG.
In FIG. 10A, the left and right two notches are made in the end portion 23a to form insertion portions 32a and 32b as engaging portions on the left and right sides, respectively. Further, in the end portion 24a, two cuts substantially parallel to the end portion side are made to form inserted portions 31a and 31b as engaged portions.

  In this example, the distance between the terminal ends of the insertion portions 32a and 32b and the end sides is set larger than the distance between the inserted portions 31a and 31b and the end sides. Further, the widths of the inserted portions 31a and 31b are set to be larger than the widths of the cuts of the inserting portions 32a and 32b. The inserted portions 31a and 31b are formed at positions corresponding to the inserted portions 32a and 32b so that the inserted portions 32a and 32b can be inserted.

  FIG. 10B shows a state in which the insertion portions 32a and 32b of FIG. 10A are inserted into the inserted portions 31a and 31b, respectively. Thus, by inserting the insertion portions 32a and 32b into the inserted portions 31a and 31b, the end portions 23a and 24a can be brought into close contact with each other so that the opening 6 can be closed.

  Further, in FIG. 10C, the insertion portion 34a is formed by cutting the end portion 23a into a bowl-shaped cut having a symmetrical shape. In addition, the end portion 24a is formed with a portion 33a to be inserted by inserting a cut substantially parallel to the end portion side into the center portion. The width of the inserted portion 33a is set to be larger than the distance between the left and right cut ends of the inserting portion 34a, and the inserted portion 33a is formed in such a width and position that the inserting portion 34a can be inserted.

  FIG. 10D shows a state where the insertion portion 34a of FIG. 10C is inserted into the insertion portion 33a. Thus, by inserting the insertion portion 34a into the insertion portion 33a, the end portions 23a and 24a can be brought into close contact with each other so that the opening 6 can be closed.

  Further, in FIG. 11A, the insertion portions 36a and 36b are formed by making two cuts in the end portion 23a. The two notches provided in the end portion 23a are provided so as to expand toward the end side. The end portion 24a is provided with inserted portions 35a and 35b for inserting the insertion portions 36a and 36b, respectively.

  The inserted portions 35a and 35b are formed by cutting in two places so that the end portion side of the end portion 24a is narrow and expands inward from the end portion side. The insertion portions 36a and 36b and the inserted portions 35a and 35b are formed at positions where the end portions overlap when the end portions 23a and 24a are overlapped, and the inserted portions 35a and 35b are inserted into the insertion portion 36a. , 36b can be inserted in such a length and position.

  FIG. 11B shows a state in which the insertion portions 36a and 36b in FIG. 11A are inserted into the inserted portions 35a and 35b. Thus, by inserting the insertion portions 36a and 36b into the inserted portions 35a and 35b, the end portions 23a and 24a can be brought into close contact with each other so that the opening 6 can be closed.

  Further, in the above embodiment, when the single skin material is cut, the back members 23 and 24 are cut simultaneously to form the engaging portion 23b and the engaged portion 24b. After the back members 23 and 24 are sewn, the end portions 23a and 24a may be cut to form the engaging portion 23b and the engaged portion 24b.

It is explanatory drawing of the headrest which concerns on the Example of this invention. It is explanatory drawing of the back member of the headrest which concerns on the Example of this invention. It is explanatory drawing of the skin of the headrest which concerns on the Example of this invention. It is explanatory drawing of the skin of the headrest which concerns on the Example of this invention. It is explanatory drawing which shows the process of the edge part process of the headrest which concerns on the Example of this invention. It is explanatory drawing which shows the process of the edge part process of the headrest which concerns on the Example of this invention. It is explanatory drawing which shows the process of the edge part process of the headrest which concerns on the Example of this invention. It is explanatory drawing which shows the resin injection | pouring process of the headrest which concerns on the Example of this invention. It is explanatory drawing which shows the resin injection | pouring process of the headrest which concerns on the Example of this invention. It is explanatory drawing of the skin of the headrest which concerns on the other Example of this invention. It is explanatory drawing of the skin of the headrest which concerns on the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Headrest 2 Skin 2a Main member 3a Back member 6 Opening part 7, 7a Suture line 8 Headrest stay 8a Base frame part 8b, 8c Supporting part 9 Cushion material 9a Foam synthetic resin 10 Mold 11 Mold body 12 Cover mold 12a Cover mold body 13a, 13b Slide plate 14 Frame members 15a, 15b Latch plate 18 Resin injection nozzle 21 Main members 22, 23, 24 Back members 25, 26 Side members 23a, 24a End portion 23b Engaging portion 23c Insertion hole 24b Engaged portion 31a, 31b Inserted portion 32a, 32b Inserted portion 33a Inserted portion 34a Inserted portion 35a, 35b Inserted portion 36a, 36b Inserted portion

Claims (6)

A skin integrated with a skin formed by forming a skin member in a bag shape, a cushion material in which foamed synthetic resin is injected into the skin and integrally foamed, and a headrest stay extending from the skin to the outside In foam molded headrest,
The bag-shaped skin has an opening for reversing the front and back,
The opening is formed by bending a pair of end portions of the skin member facing each other so as to enter the inner space of the bag-shaped skin, and at one of the pair of end portions of the skin member. The skin-integrated foam-molded headrest is characterized in that an engaging portion is formed, an engaged portion is formed on the other, and the engaging portion and the engaged portion are engaged.   2. The skin-integrated foam-molded headrest according to claim 1, wherein the engaging portion and the engaged portion are formed by cutting each pair of end portions of the skin member. The engaging portion is formed by cutting one of the pair of end portions of the skin member at two places from the end side of the end portion,
The engaged portion is provided with a notch capable of inserting the engaging portion along the end side at a position spaced apart from the end side of the end portion on the other of the pair of end portions of the skin member. The skin-integrated foam-molded headrest according to claim 1, wherein the headrest is integrally formed. Production of a skin-integrated foam-molded headrest formed by forming a bag-shaped skin from a skin member, placing the skin in a mold, and injecting a foamed synthetic resin into the skin to integrally foam a cushion material In the method
A pair of ends of the skin member are folded so as to face each other so as to enter the inner space of the bag-shaped skin, thereby forming an opening for reversing the front and back of the bag-shaped skin, and the pair of skin members An engaging portion is formed on one of the end portions, an engaged portion is formed on the other end, the engaging portion and the engaged portion are engaged with each other, and foamed synthetic resin is injected into the inside of the skin A method for manufacturing a skin-integrated foam-molded headrest.   5. The method for manufacturing a skin-integrated foam-molded headrest according to claim 4, wherein the engaging portion and the engaged portion are formed by cutting each of a pair of end portions of the skin member. The engaging portion is formed by cutting one of the pair of end portions of the skin member at two places from the end side of the end portion,
The engaged portion is provided with a notch capable of inserting the engaging portion along the end side at a position spaced apart from the end side of the end portion on the other of the pair of end portions of the skin member. The method for producing a skin-integrated foam-molded headrest according to claim 4, wherein the headrest is integrally formed.

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