JP6647359B1 - Vehicle seat member and method of manufacturing the same - Google Patents

Abstract

An object of the present invention is to provide a method of manufacturing a vehicle seat member in which a frame material of a vehicle seat member and a foamed resin molded article have an appropriate positional relationship. A frame member (20) is arranged on a fixed die (41), and a molding die (40) is clamped to form an exposed portion (20a) where a portion including the entire first side portion (21A) is exposed, and the other first portion (21a) is exposed. The foamed resin molded body 30 is molded so that at least a part of the side portion 21B is buried, and the molding die 40 is opened, and the release pins 55A and 55B attached to the fixed die 41 are used. Then, the foamed resin molded body 30 is extruded from the fixed mold 41 together with the exposed portion 20a, and the foamed resin molded body 30 is removed from the fixed mold 41 together with the frame member 20. A concave groove 55a into which the exposed part 20a is inserted is formed at the tip of the release pin 55B that pushes out the exposed part 20a, and the frame member 20 is fixed so that the exposed part 20a is inserted into the concave groove 55a during mold clamping. It is arranged on the mold 41. [Selection diagram] FIG.

Description

  The present invention relates to a vehicle seat member and a method for manufacturing the same.

  As a seat for a vehicle such as an automobile, a vehicle seat member including a rectangular frame member and a foamed resin molded body integrally formed with the frame member so as to embed the frame member is disclosed ( For example, see Patent Documents 1 to 3 and the like).

  This vehicle seat member is manufactured as follows. First, after arranging the frame material in one of the pair of molds, the pair of molds are clamped, and the foamed resin molded article is molded in the clamped pair of molds. After the molding, the pair of molds is opened, and the foamed resin molded body is extruded from one mold with a release pin attached to one mold, and the foamed resin molded article is removed from the one mold. The vehicle seat member is completed.

JP 2001-161508 A International Publication WO2015 / 159691 International Publication WO2016 / 042759

  However, in the case where the entire one side portion and the surrounding portion of the rectangular frame material are molded so as to be exposed, the portion exposed from the foamed resin molded body is stable during molding and demolding. Since the posture is not set, the exposed portion of the frame member is not arranged at an appropriate position with respect to the foamed resin molded body, and a displacement may occur.

  The present invention has been made in view of such a point, and provides a method of manufacturing a vehicle seat member in which a frame material of a vehicle seat member and a foamed resin molded body have an appropriate positional relationship. It is in.

  The present invention has been made in view of the above-described problems, and a method of manufacturing a vehicle seat member according to the present invention includes a pair of opposed first sides and a pair of opposed second sides in plan view. And at least one of the first side portions of the pair of first side portions of the frame material is exposed, and at least a part of the other first side portion is embedded. And a foamed resin molded body integrally formed with the frame material as described above, wherein the molding member is a pair of molding dies that are clamped and opened along a horizontal direction. A mold clamping step of disposing the frame material in one of the molds and clamping the pair of molds, and exposing a portion including the entire first side portion in the pair of molds. And at least one of the other first side portions. A molding step of molding the foamed resin molded article so that the embedded part is embedded, and the pair of molding dies are opened, and a release pin attached to the one molding die is used for the one of the molding dies. A mold removing step of extruding the foamed resin molded body together with the exposed portion from a molding die, and removing the foamed resin molded body from the one molding die together with the frame material. At the tip of the release pin that pushes out the exposed portion, a concave groove into which the exposed portion is inserted is formed, and in the mold clamping step, the exposed portion is inserted into the concave groove. It is characterized in that a frame material is arranged in the one mold.

  According to the present invention, in the mold clamping step, the frame material is arranged in one of the molding dies so that the exposed portion of the frame material is inserted into the concave groove of the release pin. In the molding of the foamed resin molded article, the exposed portion of the frame material can be restrained by the concave groove of the release pin. Thereby, the positional relationship between the exposed portion of the frame material and the foamed resin molded article can be maintained in an appropriate positional relationship. Furthermore, after the molds of the pair of molds are opened, the frame material and the foamed resin molded article can be simultaneously detached from one of the molds with a release pin in a stable posture. The positional relationship between the exposed portion of the frame material and the foamed resin molded article can be maintained in an appropriate positional relationship.

  Here, as long as the posture of the frame material can be stabilized by the concave groove of the release pin, it is not necessary to restrain the release pin in one of the molding dies. The one mold has a plurality of fitting portions formed with fitting grooves for fitting the exposed portions, and the exposed portions fit in the fitting grooves in the mold clamping step. As described above, the frame member is disposed in the one mold.

  According to this aspect, in the mold clamping step, when the frame material is arranged in the one mold so that the exposed portion fits into the fitting groove, the frame material is restrained at a plurality of positions. The shape can be corrected to an appropriate shape. Thereafter, the pair of molding dies and the molding of the foamed resin molded body are performed on the corrected frame material, so that the positional relationship between the exposed portion of the frame material and the foamed resin molded body is adjusted to an appropriate positional relationship. Can be held. Furthermore, when the mold is removed, the exposed portion fitted into the fitting groove comes off due to the movement of the release pin, so that the restraint of the frame material by the fitting portion is released.

  Furthermore, the frame material has at least a pair of first sides facing each other and a pair of second sides facing each other, but if it can be installed in a vehicle and has the rigidity of the frame material. And other parts may be further formed. As a more preferred embodiment, a reinforcing portion is formed on the frame member so as to connect the one first side and a second side continuous to the one first side, In the mold clamping step, at least one of the reinforcing portion and a portion to be reinforced, which is a part of the one first side portion and the second side portion in a section where the reinforcing portion is connected, Insert into the groove of the release pin.

  According to this aspect, since the portion including the reinforcing portion and the portion to be reinforced reinforced by the reinforcing portion has high rigidity, during the step of removing the mold, the extruding of the release pin causes the deformation of these portions. Can be suppressed.

  In particular, in the mold clamping step, it is preferable that the reinforcing part is inserted into the concave groove of the release pin, and the reinforced part is fitted into the fitting groove of the fitting part. Thus, by extruding the reinforcing portion with the release pin, it is possible to suppress deformation of the first side and the second side, which are the outer shapes of the frame material. Further, since the reinforced portion becomes a part of the first side portion and the second side portion, this portion is restrained by the fitting portion, so that the outer shape of the frame material is held at the time of mold clamping and molding. You.

  In a further preferred aspect, a locking portion bent into a U-shape that is locked to a vehicle is connected to the one first side, the width of the locking portion being A, the locking portion being Satisfies the relationship of B ≦ 3 × A, where B is the distance from the portion connected to the one first side to the release pin.

  According to this aspect, by satisfying such a relationship, the release pin can be arranged at the locking portion, and the position of the locking portion can be restrained during the period from clamping to releasing. Thereby, the vehicle seat member in which the position of the locking portion is held at an appropriate position can be obtained.

  Furthermore, as long as the exposed portion can be inserted into the groove, the size and shape of the groove of the release pin are not particularly limited, but more preferably, in a state where the exposed portion is inserted into the groove. A gap is formed between the side wall surface of the groove and the exposed portion. According to this aspect, the exposed portion inserted into the concave groove can be loosely fitted, and the exposed portion can be easily removed from the release pin at the time of demolding.

  In a further preferred aspect, the side wall surface forming the concave groove has an opening wall surface formed so that the width of the concave groove increases toward the opening of the concave groove. According to this aspect, the exposed portion can be guided along the opening wall surface, and the exposed portion can be easily removed from the release pin at the time of demolding.

  Further, the manufactured vehicle seat member described above will be described. The vehicle seat member includes a rectangular frame member having at least a pair of opposed first sides and a pair of opposed second sides in a plan view, and a pair of first sides of the frame member. A foamed resin molded body formed integrally with the frame material such that at least one first side is entirely exposed and at least a part of the other first side is embedded. A frame member, wherein the frame member includes: an exposed portion where a portion including the entire first side is exposed; and an embedded portion where at least a part of the other first side is embedded. And a gap is formed between the buried portion adjacent to the exposed portion and the foamed resin molded body, and the gap is in a range of 0.1 mm to 2 mm. .

  According to the present invention, since the gap formed between the embedded portion adjacent to the exposed portion and the foamed resin molded body is in the range of 0.1 mm to 2 mm, the frame of the vehicle seat member The material and the foamed resin molded article have an appropriate positional relationship.

  ADVANTAGE OF THE INVENTION According to the manufacturing method of the vehicle seat member which concerns on this invention, the frame member of a vehicle seat member, and a foamed resin molding can obtain the vehicle seat member which has an appropriate positional relationship.

It is the typical perspective view which looked at the seat member for vehicles concerning an embodiment of the present invention from the upper side. FIG. 2 is a schematic perspective view of the vehicle seat member shown in FIG. 1 as viewed from below. It is a left view of the vehicle seat member shown in FIG. FIG. 2 is a schematic view of a manufacturing apparatus for manufacturing the vehicle seat member shown in FIG. 1. FIG. 2 is a flowchart of a method for manufacturing the vehicle seat member shown in FIG. 1. It is a typical perspective view for demonstrating arrangement | positioning of the frame material in the mold clamping process shown in FIG. (A), (b) is typical sectional drawing for demonstrating operation | movement of a release pin. (A), (b) is typical sectional drawing for demonstrating the behavior of the exposed part fitted by the fitting part accompanying the behavior of the release pin. FIG. 6 is a schematic perspective view for explaining a forming step shown in FIG. 5. FIG. 6 is a schematic perspective view for explaining a mold opening step in the demolding step shown in FIG. 5. FIG. 9 is a plan view illustrating an arrangement relationship between a release pin and a fitting portion in a releasing step illustrated in FIG. 8. FIG. 2 is a schematic diagram showing a positional relationship between a foamed resin molded body and a frame member as viewed from the direction of the arrow A in FIG. (A)-(c) is typical sectional drawing which shows the modification of a release pin.

  Hereinafter, some embodiments of a vehicle seat member and a vehicle seat according to the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to a specific embodiment.

1. Vehicle seat member 10 An embodiment of a vehicle seat member and a method of manufacturing the same will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the vehicle seat member 10 includes a frame member 20 and a foamed resin molded body 30 in which at least a part of the frame member 20 is embedded as a basic configuration.

  For example, as shown in FIG. 3, the vehicle seat member 10 of the present embodiment includes an upper sheet member 50 such as a cushion material from the upper surface 11 of the vehicle seat member 10, that is, the upper surface 31 of the foamed resin molded body 30. Can be laminated to form the vehicle seat 1. Further, the vehicle seat member 10 may be covered with an appropriate exterior material together with a cushion material or the like to form the vehicle seat 1.

1-1. Frame Material 20 As shown in FIGS. 1 and 2, the frame material 20 is embedded in the foamed resin molded body 30 in order to provide required shape retention and strength. The frame member 20 is generally made of a material whose dimensions do not substantially change compared to the foamed resin molded body 30 under the conditions for molding the foamed resin molded body 30, for example, a metal material such as steel or aluminum. .

  The frame member 20 has at least a pair of opposing first sides (long sides) 21A and 21B and a pair of opposing second sides (short sides) 22 and 22 in plan view. The outer shape is rectangular in plan view. Here, the rectangular shape includes a square shape or a rectangular shape, and another shape member such as the pedestals 23 may be attached to this shape. On both sides of one first side 21A, second sides 22, 22 are formed continuously. The second sides 22, 22 are formed at positions facing each other. At a position facing one first side 21A, the pair of second sides 22, 22 is connected to the other first side 21B. Are formed continuously.

  Here, in the frame member 20, a portion including the entire first side 21A is an exposed portion 20a exposed from the foamed resin molded body 30, and at least a part of the other first side 21B is The buried portion 20b is buried in the foamed resin molded body 30. In the present embodiment, the entire other first side portion 21B is embedded in the foamed resin molded body 30, but a part thereof may be exposed from the foamed resin molded body 30.

  A reinforcing portion 27A is formed on the frame member 20 so as to connect the first side 21A, which is the exposed portion 20a, and the second side 22 continuous with the first side 21A. . The reinforcing portion 27A is a metal wire or the like made of the same material as the first side 21A and the like. The reinforcing portion 27A reinforces a part of the first side 21A and a part of the second side 22 in a section where the reinforcing part 27A is connected. Therefore, the portions in these sections become the reinforced portions 27B reinforced by the reinforcing portions 27A. In the present embodiment, the reinforcing portion 27A is a portion in which a wire or the like is bent in an L shape, but covers a corner of the frame member 20 formed by one of the first side 21A and the second side 22. The shape is not particularly limited as long as it can be reinforced as the reinforcing portion 27B.

  Further, a connecting portion 28 for connecting these is formed between the pair of first side portions 21A and 21B. The connecting portion 28 is a metal wire or the like made of the same material as the first side portion 21A and the like. A part of the connecting portion 28 is exposed on the side connected to the first side 21A and becomes a part of the exposed portion 20a. The side connected to the other first side 21B is embedded in the foamed resin molded body 30, and becomes a part of the embedded portion 20b.

  Further, in the present embodiment, a pair of metal pedestals 23, 23 made of a steel plate or the like is connected to the other first side 21B serving as the buried portion 20b. A front locking portion 24 is mounted on each pedestal portion 23, and a U-shaped rear locking portion 25 is mounted on one first side 21A, which is an exposed portion 20a. In the present embodiment, for example, a steel or aluminum wire is used for the front and rear locking portions 24 and 25.

  The front locking portion 24 and the rear locking portion 25 of the frame member 20 are portions for locking the vehicle seat member 10 to the vehicle. The front locking portion 24 is connected to the pedestal portion 23 by, for example, welding or bonding, and protrudes downward from the pedestal portion 23. The front end portion 24a of the front locking portion 24 is curved in a substantially U-shape. More specifically, the entire periphery of the base end portion 24b is embedded in the foamed resin molded body 30. Thereby, even when a force in the pull-out direction is applied when the vehicle seat member 10 of the present embodiment is locked to the vehicle via the distal end portion 24a of the front locking portion 24, the front locking portion 24 Is held by the foamed resin molded body 30, and the resistance to the force in the pull-out direction can be increased.

  Further, the rear locking portion 25 corresponds to the “locking portion” in the present invention, and projects from the rectangular frame member 20 in a plan view of the vehicle seat member 10 (for example, see FIG. 11). And is locked to a vehicle (not shown).

  In the present embodiment, the front end portions 24a and 25a of the front locking portion 24 and the rear locking portion 25 are each formed by bending a wire into a substantially U-shape. However, the present invention is not limited to this structure. What is necessary is just to make it the structure which can be locked according to a structure.

  In the present embodiment, the front locking portion 24 is connected via the pedestal portion 23. However, the front locking portion 24 is not limited to this form, and may be directly connected to the other first side 21 </ b> B without the intervention of the pedestal portion 23, like the rear locking portion 25. Further, the number of front locking portions 24 is not particularly limited, and may be one or three or more. One of the front locking part 24 and the rear locking part 25 may not be present.

1-2. About the foamed resin molded body 30 As shown in FIGS. 1 to 4, the foamed resin molded body 30 is an in-mold foamed resin molded body of a foamed resin. The foamed resin molded body 30 has an upper surface 31 serving as a side on which a vehicle occupant sits and a bottom surface 32 serving as a side in contact with the vehicle. The foamed resin molded body 30 embeds the other first side 21B of the frame member 20 and a part of the second sides 22, 22 continuous with the first side 21 </ b> B. When the vehicle seat member 10 is incorporated in a vehicle, the foamed resin molded body 30 supports the occupant's upper thigh.

  Here, the resin constituting the foamed resin molded body 30 is, for example, a composite resin containing a polystyrene resin and a polyolefin resin, a polystyrene resin, a composite resin containing a polystyrene resin and a polyphenylene ether resin, a polyolefin resin, A polyester resin or the like can be used, and a composite resin containing a polystyrene resin and a polyolefin resin, or a polystyrene resin is particularly preferable.

2. Regarding the foam molding apparatus 4, the foam molding apparatus 4 for the vehicle seat member 10 will be described below with reference to FIG. As shown in FIG. 4, the foam molding apparatus 4 includes a mold 40 for molding the foamed resin molded body 30. The molding die 40 includes a fixed die 41 and a movable die 42. By moving the movable mold 42 in the horizontal direction, the mold 40 is clamped and opened along the horizontal direction. In the present embodiment, the mold 40 composed of the fixed mold 41 and the movable mold 42 corresponds to “a pair of molds” according to the present invention, and the fixed mold 41 corresponds to “one mold” according to the present invention. Is equivalent to

  The movable mold 42 is attached to a die plate 44, and the die plate 44 is attached via a cylinder plate 45 to a drive cylinder 46 for clamping and opening the mold. The equipment from the vicinity of the fixed mold 41 to the drive cylinder 46 is covered with a cover, and an operation panel (not shown) provided with a control device (not shown) is arranged outside the cover.

  A diver 52 is inserted into each of the four corners of the movable mold 42, the die plate 44, and the cylinder plate 45. Each diver 52 is fixed to a fixed mold 51 and serves as a guide for guiding the movable mold 42, the die plate 44, and the cylinder plate 45 in the horizontal direction.

  By operating the drive cylinder 46, the cylinder plate 45 and the die plate 44 are guided in the horizontal direction along the diver 52. As a result, the movable mold 42 is brought into contact with the fixed mold 41, the mold 40 is clamped, and the movable mold 42 is separated from the fixed mold 41, whereby the mold 40 is opened.

  The fixed mold 41 is fixed to a fixed mold 51 standing upright on the floor surface, and the diver 52 is fixed to the fixed mold 51 so as to extend in the horizontal direction as described above. Further, a pair of upper frames 57 are fixed to the upper part of the fixed mold 51 as described later. A raw material hopper 47 is mounted on the upper frame 57, and the raw material hopper 47 is connected to the fixed mold 41 via a supply pipe 58. As a result, the prefoamed resin particles serving as the raw material of the foamed resin molded body 30 are charged into the raw material hopper 47, and the resin particles can be supplied to the fixed mold 41 via the supply pipe 58.

  As shown in FIG. 4, a release frame 54 is arranged on the diver 52 on the opposite side of the movable mold 42 so as to be guided in the horizontal direction via the fixed mold 41 and project from the fixed mold 51 in the horizontal direction. Have been. Specifically, the release frame 54 is inserted through each diver 52. Further, a plurality of release pins 55A, 55B,... Are fixed to the release frame 54.

  The release pins 55A and 55B are attached to the fixed mold 41, and extrude the foamed resin molded body 30 together with the frame material 20 (specifically, the exposed portion 20a) from the fixed mold 41, and form the foamed resin together with the frame material 20. The molded body 30 is released from the fixed mold 41.

  As will be described later, the release pin 55A pushes the exposed portion 20a of the frame member 20 out of the fixed mold 41 when the mold is released, and as shown in FIG. Has a concave groove 55a into which the exposed portion 20a of the frame member 20 is inserted. On the other hand, the release pin 55B pushes out the foamed resin molded body 30 formed integrally with the frame member 20 from the fixed die 41 at the time of demolding. Unlike the release pin 55A, the release pin 55B has , A normal release pin without the concave groove 55a. The fixed mold 41 and the release pins 55A and 55B will be described in detail together with a manufacturing method described later.

  In the fixed mold frame 51, a release driving cylinder 56 for moving the mold release frame 54 along the diver 52 is arranged. The tip of the drive cylinder 56 (specifically, the tip of the piston) is fixed to the release frame 54. By driving the drive cylinder 56, the release frame 54 can be slid on the diver 52 and moved in the horizontal direction. Thus, the release pins 55A and 55B can move in the horizontal direction with respect to the fixed mold 41 together with the release frame 54, and the foamed resin molded body 30 is released from the fixed mold 41 together with the frame member 20. be able to.

  In addition, a steam pipe (not shown) is connected to the fixed mold 41 and the movable mold 42. The supply of the pre-expanded particles and the supply of steam to the movable mold 42 and the fixed mold 41 and the driving of the drive cylinders 46 and 56 are performed by a control device (not shown).

3. Manufacturing Method of Vehicle Seat Member 10 The vehicle seat member 10 according to the present embodiment is manufactured by a series of steps from a mold clamping step S11 to a demolding step S13 shown in FIG. The frame member 20 is prepared in advance before the mold clamping step S11.

3-1. About mold clamping step S11 First, in the mold clamping step S11, the frame member 20 is arranged on the fixed mold 41 as shown in FIG. Specifically, of the release pins 55A and 55B, the exposed portions 20a of the frame material 20 are inserted into concave grooves 55a formed at the tips of the release pins 55A for pushing out the frame material 20 (FIG. 7A )reference). The width of the concave groove 55a is wider than the thickness (specifically, the diameter) of the exposed portion 20a inserted into the concave groove 55a. Therefore, a gap is formed between the side wall surface 55b of the groove 55a and the exposed portion 20a in a state where the exposed portion 20a is inserted into the groove 55a. The exposed portion 20a inserted into the concave groove 55a can be loosely fitted, and the exposed portion 20a can be easily removed from the release pin 55A in a releasing step S13 described later.

  Further, in the present embodiment, the release pins 55A are also provided at positions where the reinforcing portions 27A and the connecting portions 28 constituting the exposed portions 20a of the frame member 20 are arranged. When arranging the frame member 20 on the fixed mold 41, the reinforcing portion 27A and the connecting portion 28 are inserted into the concave grooves 55a of the release pins 55A.

  Further, as shown in FIG. 11, two release pins 55A are arranged at positions sandwiching the rear locking portion 25. In the present embodiment, for any release pin 55A, the width of the rear locking portion is A, and from the portion where the rear locking portion 25 is connected to one first side 21A to the release pin 55A. Satisfies the relationship of B ≦ 3 × A when the distance of B is B. When the frame member 20 is arranged on the fixed mold 41, these portions of the one first side 21A are also inserted into the concave grooves 55a of the release pins 55A.

  The width of the rear locking portion 25 is the distance between two portions where the rear locking portion 25 is connected to the first side 21A, and the width from the connected portion to the release pin 55A. The distance is the shortest distance from the connected portion closer to the release pin 55A to the release pin 55A. In this manner, the release pin 55A is disposed on the rear locking portion 25, and the position of the rear locking portion 25 can be restrained during the period from mold clamping to release, which will be described later. Thereby, the vehicle seat member 10 in which the position of the rear locking portion 25 is held at an appropriate position can be obtained.

  In addition to this, as shown in FIGS. 6 and 8A, the fixed die 41 has a fitting groove 41b that fits into the exposed portion 20a according to the shape of the exposed portion 20a of the frame member 20. And a plurality of fitting portions 41a. In the present embodiment, among the plurality of fitting portions 41a, three fitting portions 41a fit the exposed portions 20a that are boundaries of the buried portions 20b of the frame material 20 when the frame material 20 is arranged. Is provided.

  When arranging the frame member 20, the frame member 20 is arranged on the fixed die 41 such that the exposed portion 20 a is fitted into the fitting groove 41 b of each fitting portion 41 a. Since the position is restricted, the shape can be corrected to an appropriate shape.

  Further, a fitting portion 41a is also provided on the reinforced portion 27B which is a part of the first side portion 21A and the second side portion 22 in the section where the reinforcing portion 27A is connected, and the reinforced portion is provided. 27B is inserted into the fitting groove 41b of the fitting portion 41a. After disposing the frame member 20 on the fixed mold 41 in this manner, the movable mold 42 is moved to the fixed mold 41 along the horizontal direction, whereby the mold 40 is clamped.

3-2. About Molding Step S12 In the molding step S12, as shown in FIG. 9, the foamed resin molded body 30 is molded. In FIG. 9, the exposed portion 20a of the frame member 20 and the portion of the fixed mold 41 where the exposed portion 20a is arranged are drawn by solid lines. Specifically, in this step, in the clamped mold 40, a portion including the entire first side 21A becomes an exposed portion 20a, and at least a part of the other first side 21B is exposed. The foamed resin molded body 30 is molded so as to become the embedded portion 20b to be embedded.

  More specifically, after the pre-expanded resin particles obtained by pre-expanding the expandable resin particles containing the resin and the foaming agent are filled in the cavity 40a of the closed mold 40, steam is injected into the mold 40. Is supplied to expand the pre-expanded resin particles 30A to form the expanded resin molded body 30.

  At this time, the frame member 20 is disposed on the fixed die 41 so that the exposed portion 20a of the frame member 20 is inserted into the concave groove 55a of the release pin 55A. In molding the molded body 30, the exposed portion 20a of the frame member 20 can be restrained by the concave groove 55a of the release pin 55A. Thereby, the positional relationship between the exposed portion 20a of the frame member 20 and the foamed resin molded body 30 can be maintained in an appropriate positional relationship.

  Further, since the mold 40 is clamped and the foamed resin molded product is formed on the frame material 20 having the corrected shape by the fitting portion 41a, the exposed portion 20a of the frame material 20 and the foamed resin molded product 30 are formed. Can be maintained in an appropriate positional relationship. In particular, the reinforced portion 27B becomes a part of one of the first side 21A and the second side 22. This portion is restrained by the fitting portion 41a. Is retained.

3-3. About Mold Removal Step S13 In the molding step S12, as shown in FIG. 4, the movable mold 42 is moved away from the fixed mold 41, and the mold 40 is opened. Then, from the state shown in FIG. The resin molding 30 is released from the fixed die 41.

  As a result, as shown in FIG. 7B, the concave portion 55a of the release pin 55A is pushed out with the exposed portion 20a inserted, and as shown in FIG. 8B, the fitting portion 41a The exposed portion 20a is pushed out from the fitting groove 41b, and the fitting with the fitting groove 41b is released.

  In this manner, the frame material 20 and the foamed resin molded body 30 can be simultaneously detached from the fixed mold 41 with the release pins 55A and 55B in a stable posture. The positional relationship between 20a and the foamed resin molded body 30 can be maintained in an appropriate positional relationship.

  In addition, since the portion including the reinforcing portion 27A and the portion to be reinforced 27B reinforced by the reinforcing portion 27A has high rigidity, the portions are deformed by pushing out the release pin 55A during the demolding step S13. Can be suppressed. By extruding the reinforcing portion 27A with the release pin 55A, it is possible to suppress the deformation of the first side 21A and the second side 22 which are the outer shape of the frame member 20.

  In the vehicle seat member 10 manufactured as described above, a gap C is formed between the buried portion 20b adjacent to the exposed portion 20a and the foamed resin molded body 30, as shown in FIG. However, the size S of the gap C can be set in a range of 0.1 mm to 2 mm. As a result, in the vehicle seat member 10, the frame member 20 and the foamed resin molded body 30 have an appropriate positional relationship. The size S of the gap C is the maximum length in the gap C as shown in FIG.

  Here, as shown in the modified examples of FIGS. 13A to 13C, the side wall surface 55b forming the concave groove 55a is formed so that the width of the concave groove 55a increases toward the opening of the concave groove 55a. May have an open wall surface 55c. As shown in FIG. 13 (a), the opening wall surface 55c may be flat, and as shown in FIG. 13 (b), the opening wall surface 55c may be a rounded surface. In addition, as shown in FIG. 13C, an opening wall surface 55c may be provided below the side wall surface 55b of the concave groove 55a. In any case, the exposed portion 20a of the frame member 20 can be guided along the opening wall surface 55c, and the exposed portion 20a can be easily removed from the release pin 55A when removing the mold.

  As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various designs may be made without departing from the spirit of the present invention described in the claims. Changes can be made.

  For example, the concave groove of the release pin may be formed closer to the pushing direction than the fitting groove of the fitting portion. Thus, when the mold is removed, the exposed portion of the frame material fitted into the fitting groove can be pushed up by the release pin, so that the deformation of the frame material can be suppressed.

  Reference numeral 20: frame material, 20a: exposed portion, 20b: buried portion, 21A: one first side, 21B: other first side, 22: second side, 30: foamed resin molded product, 27A: reinforcement Part, 27B: Reinforced part, 40: Mold (a pair of molds), 41: Fixed mold (one mold), 41a: Fitting part, 41b: Fitting groove, 42: Moving mold, 55A: Separation Mold pin, 55a: concave groove

Claims (8)

In a plan view, a rectangular frame material having at least a pair of opposed first sides and a pair of opposed second sides,
Of the pair of first sides of the frame material, at least one whole of the first side is exposed, and at least a part of the other first side is integrally formed with the frame material so as to be embedded. A foamed resin molded article, and a method for manufacturing a vehicle seat member comprising:
A mold clamping step of arranging the frame material in one of a pair of molds that are clamped and opened along a horizontal direction, and clamping the pair of molds,
In the pair of molds, the foam is formed such that a portion including the entire first side portion is an exposed portion and at least a part of the other first side portion is a buried portion. A molding step of molding a resin molded body,
The pair of molds are opened, and the foamed resin molded body is extruded together with the exposed portion from the one mold using a release pin attached to the one mold, and the foamed resin is molded together with the frame material. A demolding step of demolding the resin molded body from the one molding die,
At the tip of the release pin that pushes out the exposed portion of the release pin, a concave groove into which the exposed portion is inserted is formed,
The method for manufacturing a seat member for a vehicle, wherein in the mold clamping step, the frame member is arranged in the one molding die so that the exposed portion is inserted into the concave groove. The one mold has a plurality of fitting portions in which fitting grooves for fitting the exposed portions are formed,
2. The vehicle seat member according to claim 1, wherein, in the mold clamping step, the frame member is arranged on the one mold so that the exposed portion fits into the fitting groove. 3. Method. In the frame material, a reinforcing portion is formed so as to connect the one first side and a second side continuous to the one first side,
In the mold clamping step, at least one of the reinforcing portion and a portion to be reinforced, which is a part of the one first side portion and the second side portion in a section where the reinforcing portion is connected, The method for manufacturing a vehicle seat member according to claim 2, wherein the release pin is inserted into the concave groove.   The said clamp part WHEREIN: The said reinforcement part is inserted in the said recessed groove of the said release pin, and the said to-be-reinforced part fits in the fitting groove of the said fitting part, The claim 3 characterized by the above-mentioned. Manufacturing method of a vehicle seat member.   A locking portion bent into a U-shape that is locked to a vehicle is connected to the one first side portion, the width of the locking portion is A, and the locking portion is the first first side. The vehicle according to any one of claims 1 to 4, wherein when a distance from a portion connected to a side portion to the release pin is B, a relationship of B 3 x A is satisfied. Of manufacturing a sheet member for use.   A gap is formed between a side wall surface of the groove and the exposed portion in a state where the exposed portion is inserted into the groove. Manufacturing method of a vehicle seat member.   The vehicle seat member according to claim 6, wherein the side wall surface forming the concave groove has an opening wall surface formed so that a width of the concave groove increases toward an opening of the concave groove. Production method. In a plan view, a rectangular frame material having at least a pair of opposed first sides and a pair of opposed second sides,
Of the pair of first sides of the frame material, at least one whole of the first side is exposed, and at least a part of the other first side is integrally formed with the frame material so as to be embedded. A foamed resin molded article, and a vehicle seat member comprising:
The frame member includes an exposed portion where a portion including the entire first side portion is exposed, and a buried portion where at least a part of the other first side portion is buried,
A gap is formed between the buried portion adjacent to the exposed portion and the foamed resin molded body, and the gap is in a range of 0.1 mm to 2 mm. .

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