JP2022066341A - Sheet pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foam molding mold capable of making it difficult for a magnetic body to scatter at the time of operation of an air bag unit, and a manufacturing method of a sheet pad using the same.

SOLUTION: A foam molding mold 50 of the present invention has a pad body 11 having an accommodating recess 20 for accommodating an air bag unit 90, and a reinforcing surface member 30 laid on an inner surface of the accommodating recess 20, in which a portion overlapping an opening 31 of the pad body 11 is used for foaming of a sheet pad 10 which bursts when the air bag unit 90 is operated, and has a locking protrusion 60 and a magnet 65 for fixing a reinforcing surface material 39 by overlapping on an exterior surface of the side protrusion 56 with a tip end of the side projection 56 forming the housing recess 20 inserted in the opening 31. The locking protrusion 60 is provided at the tip end of the side protrusion 56 to lock a locking hole 32 near the opening 31 in the reinforcing surface material 30. The magnet 65 is magnetically attracted to the magnetic substance 33 provided at a portion away from the opening 31 of the reinforcing surface member 30.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention has a pad body provided with a storage recess for accommodating an airbag device, and a reinforcing surface material laid on the inner surface of the storage recess, and an opening formed in the reinforcing surface material of the pad body. The present invention relates to a method for manufacturing a seat pad in which a portion overlapping with the airbag is configured to be cleaved when the airbag device is operated, and a foam molding mold used therein.

In the method for manufacturing a seat pad disclosed in Patent Document 1, a molding protrusion for forming an accommodating recess in a foam molding die is inserted into an opening of a reinforcing face material, and the reinforcing face material is superposed on the outer surface of the molding protrusion. And fix it. Next, the pad body is molded by foaming the resin in the foam molding mold, and the reinforcing face material is integrally fixed to the pad body.

Further, as a method of fixing the reinforcing surface material to the inner surface of the foam molding mold, a magnet is provided on the inner surface of the foam molding mold, and a magnetic material that attracts the magnet is provided on the reinforcing surface material to be used with these magnetic materials. A method of fixing a reinforcing face material to a foam molding mold by attracting a magnet is known (see, for example, Patent Document 2).

Japanese Patent No. 4541778 (paragraphs [0026] to [0027], FIGS. 5, 7 to 8). Japanese Unexamined Patent Publication No. 2001-252930 (paragraph [0019], FIG. 1)

By the way, in the case of manufacturing a seat pad accommodating an airbag device, in the method of fixing the reinforcing face material to the foam molding mold by magnetic adsorption, the foamed resin gets into between the reinforcing face material and the foam molding mold. It is necessary to arrange the magnetic material of the reinforcing face material in the vicinity of the opening in order to prevent the above. Therefore, when the airbag device is operated, the magnetic material may be scattered.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a foam molding mold capable of making it difficult for a magnetic material to scatter when an airbag device is operated, and a method for manufacturing a seat pad using the foam molding mold. And.

A first aspect of the invention made to achieve the above object has a pad body provided with a storage recess for accommodating an airbag device, and a reinforcing surface material laid on the inner surface of the accommodation recess. The portion of the pad body that overlaps with the opening provided in the reinforcing face material is a foam molding mold for foam molding a seat pad that opens when the airbag device is operated, and forms the accommodating recess. The fixing means is provided with a molding protrusion to be formed and a fixing means for superimposing and fixing the reinforcing surface material on the outer surface of the molding protrusion with the tip of the molding protrusion inserted into the opening. Is a locking protrusion provided at the tip of the molded protrusion and engaged with an engagement hole formed in the vicinity of the opening in the reinforcing face material, and the reinforcing face material of the reinforcing face material. It is a foam molding type having a magnetic material provided in a portion away from the opening and a magnet that magnetically attracts the magnet.

In the second aspect of the invention, the molding protrusion protrudes along the opening / closing direction of the foam molding mold, and the surface of the locking protrusion facing the base end side of the molding protrusion is directed to the base end side. The foam molding mold according to the first aspect, wherein the surface is an inclined surface that gradually reduces the amount of protrusion of the locking protrusion as it approaches.

A third aspect of the invention has an upper mold, a lower mold, and a core addressed to the upper mold, and faces the outer edge of the core at a distance from the lower side with respect to the upper mold. The outer edge facing portion is provided, the molding protrusion protrudes downward from the outer edge facing portion, and the magnet includes a magnet that is arranged on the facing surface of the outer edge facing portion with the upper mold. , The foam molding mold according to the first aspect or the second aspect.

A fourth aspect of the present invention is the method for manufacturing a seat pad using the foam molding mold according to the first to third aspects, wherein the reinforcing face material is provided with an engaging hole penetrating the vicinity of the opening. In forming and fixing the reinforcing face material to the molding protrusion, the foam molding mold locking protrusion is locked in the engagement hole of the reinforcing face material, and then the reinforcing surface material is used for reinforcement. It is a method of manufacturing a seat pad that magnetically attracts the magnetic material of a face material and the magnet of the foam molding type.

[First and fourth aspects of the invention]
In this embodiment, when the reinforcing face material is attached to the foam molding die, the locking protrusion provided at the tip of the molding protrusion is formed in the engaging hole formed in the vicinity of the opening in the reinforcing face material. Lock. Further, the magnet provided in the foam molding mold magnetically attracts the magnetic material provided in the portion of the reinforcing face material away from the opening. This makes it possible to reduce the number of magnetic materials arranged near the portion of the seat pad that is cleaved by the airbag device, and suppresses the scattering of the magnetic material when the airbag device is activated.

Further, in the fourth aspect of the invention, the engaging hole of the reinforcing face material is hooked on the locking protrusion, and the magnetic material of the reinforcing face material is magnetically attracted to the magnet while giving tension to the reinforcing face material. Is possible. As a result, the reinforcing face material can be brought into close contact with the outer surface of the molding protrusion, and the foamed resin raw material is suppressed from entering between the molding protrusion and the reinforcing face material.

[Second aspect of the invention]
In this embodiment, the surface of the locking protrusions facing the base end side of the molded protrusions is an inclined surface that gradually reduces the amount of protrusion of the locking protrusions toward the base end side. The pad can be smoothly removed from the foam molding mold.

[Third aspect of the invention]
In this embodiment, the magnet is arranged on the surface of the outer edge facing portion of the core facing the upper mold. As a result, the reinforcing face material is wound from the lower side of the core through the side to the upper side, so that it is possible to improve the adhesion between the reinforcing face material and the forming protrusion.

Perspective view of the seat pad Flat cross section of seat pad (A) Enlarged plan view of the area around the seat pad accommodating recess, (B) Plan view of the seat pad when the airbag device is activated. Perspective view of foam molding mold in open mold Regular cross-sectional view of the foam molding mold in the closed mold state Regular cross-sectional view of the molded protrusion to which the reinforcing face material is attached. Enlarged normal cross-sectional view around the molding protrusion when the foam molding mold is closed. Enlarged normal cross-sectional view around the molding protrusion during foam molding of the pad body Positive cross-sectional view of the foam-molded pad body Positive cross-sectional view of the upper mold, core and pad body of the foam molding mold in the open state. Enlarged regular cross-sectional view around the locking protrusion of the pad body that is removed from the foam molding mold. Regular cross-sectional view of the locking protrusion according to another embodiment

As shown in FIGS. 1 and 2, the seat pad 10 according to the present embodiment is a back pad used for the backrest portion 92 of the vehicle seat 90. The backrest portion 92 covers the seat pad 10 with a cover 93.

As shown in FIG. 2, the seat pad 10 includes a pad main body 11 made of foamed resin and a reinforcing face material 30 integrated with a surface facing the rear side of the pad main body 11. The reinforcing face material 30 is made of, for example, a non-woven fabric.

The pad body 11 includes a base 12 that covers the back frame (not shown) of the vehicle seat 90 from the front side, a rear protrusion 13 that protrudes rearward from the outer edge of the base 12, and a rear end portion of the rear protrusion 13. It is composed of a flange portion 14 projecting inward from the surface. Specifically, the base 12 has a vertically long rectangular shape when viewed from the front side. The rear protrusion 13 and the flange 14 are continuously formed along the upper side portion and the left and right side side portions of the base 12. The space surrounded by the base 12, the rear protrusion 13, and the flange 14 is a receiving recess 15 that receives the outer edge of the back frame.

The base 12 includes a main receiving portion 12A arranged on the left and right center sides of the base 12 to receive the back of the seated person, and a pair of side receiving portions 12B and 12B arranged on the left and right sides of the main receiving portion 12A. ing. The main receiving portion 12A is formed flat in the front-rear direction, and the side receiving portion 12B is formed so as to bulge forward with respect to the main receiving portion 12A. A side groove 16 extending in the vertical direction is formed on the rear surface of the side receiving portion 12B. The rear protrusion 13 is connected to the side wall of the side groove 16, and the side groove 16 communicates with the above-mentioned receiving recess 15. Then, the left and right sides of the back frame engage with the side grooves 16.

A storage recess 20 for accommodating the airbag device 90 is formed in the side groove 16 provided in the side receiving portion 12B on the side close to the vehicle door (in the example of FIG. 2, the right side receiving portion 12B). There is. Specifically, the airbag device 90 includes a side receiving portion 12B on the side close to the vehicle door, a portion of the rear protrusion 13 protruding rearward from the side receiving portion 12B, and the side receiving portion 14 of the flange portion 14. It is accommodated in a space surrounded by a portion arranged on the rear side of the portion 12B, and a part of the airbag device 90 is accommodated in the accommodating recess 20.

The inner surface of the accommodating recess 20 is provided with a stepped portion 23 that narrows the front side in a stepped manner. The wide portion 20A of the accommodating recess 20 on the rear side of the step portion 23 receives the airbag device 90. The narrow portion 20B of the accommodating recess 20 on the front side of the step portion 23 is arranged closer to the side closer to the vehicle door. Specifically, the step portion 23 is formed on the inner surface of the accommodating recess 20 facing the vehicle door side, and the narrow portion 20B is from the portion of the wide portion 20A closer to the vehicle door to the front side. It has been extended. In the example of FIG. 2, the front end wall portion 21F arranged on the front side of the narrow portion 20B among the recessed constitutional walls 21 constituting the accommodating recessed portion 20 is the thinnest among the recessed constituent walls 21.

As shown in FIG. 2, the reinforcing face material 30 is a surface of the base 12 that faces the receiving recess 15 of the rear surface of the main receiving portion 12A and the inner surface of the side groove 16 and the rear protrusion 13 and the flange portion 14. , The inner surface of the receiving recess 15) and. The reinforcing face material 30 may be made of one piece of non-woven fabric, or may be made of a plurality of non-woven fabrics joined together.

As shown in FIG. 3A, an opening extending linearly in the vertical direction is provided in a portion of the reinforcing surface material 30 laid on the inner surface of the accommodating recess 20 (that is, the inner surface of the recess building wall 21). 31 is formed. The opening 31 is overlapped with the front end wall portion 21F of the recessed wall 21.

An engagement hole 32 is formed through the reinforcing face material 30 in the vicinity of the opening 31 (specifically, the opening edge of the opening 31). A plurality of engaging holes 32 are provided so as to be arranged along the extending direction of the opening 31. Further, a plurality of magnetic bodies 33 are provided in a portion of the reinforcing face material 30 that is separated from the opening 31. That is, the magnetic body 33 is arranged at a position farther from the opening 31 than the engagement hole 32.

As shown in FIG. 3B, when the airbag device 90 is activated, the airbag 91 housed in the airbag device 90 expands to the front side. Here, the front end wall portion 21F of the recessed wall 21 constituting the accommodating recess 20 is not reinforced by the reinforcing face material 30 because it overlaps with the opening portion 31. Moreover, the front end wall portion 21F is the thinnest among the recessed wall 21. As a result, when the airbag 91 expands, the front end wall portion 21F of the recessed wall 21 is preferentially cleaved, and the airbag 91 protruding forward from the pad body 11 is arranged between the vehicle door and the seated person. ..

4 and 5 show a foam molding die 50 for foam molding the seat pad 10. The foam molding die 50 includes an upper die 51, a lower die 52, and a core 53 attached to the upper die 51. In the foam molding die 50, the pad body 11 is foam molded with the reinforcing face material 30 attached to the core 53. The pad body 11 is molded with its front surface facing down.

As shown in FIG. 4, the upper die 51 and the lower die 52 have a rectangular shape in a plan view, and the short side portions are connected to each other by a hinge. The lower mold 52 has a container shape having a molding recess 52A opened on the upper side, and the front surface of the pad main body 11 is molded by the inner surface of the molding recess 52A. The upper mold 51 is formed in a lid shape that closes the molding recess 52A. As shown in FIG. 5, a central recess 51A for accommodating the central protrusion 54T of the core 53 is formed in the central portion of the lower surface of the upper die 51.

As shown in FIG. 5, the core 53 has a vertically flat main plate 54 and a central protrusion 54T protruding from the central portion of the upper surface of the main plate 54. Then, the core 53 is positioned with respect to the upper die 51 by engaging the central protrusion 54T with the central recess 51A of the upper die 51.

As shown in FIG. 4, the main board 54 is formed in a rectangular shape in a plan view, and forms the rear surface of the base 12 in the pad body 11. The short sides of the main board 54 are arranged along the short sides of the upper die 51 and the lower die 52.

As shown in FIG. 5, a U-shaped gap in a plan view is formed between the main plate 54 and the inner peripheral surface of the molding recess 52A in the lower mold 52, and the gap causes the rear protrusion of the pad body 11. Part 13 (see FIG. 2) is molded. Further, the height of the central protrusion 54T of the core 53 is larger than the depth of the central recess 51A of the upper die 51, and a gap is formed between the central protrusion 54 and the upper die 51 at the outer edge portion of the main board 54. A gap forming portion 55 (corresponding to the “outer edge facing portion” of the present invention) is provided. Then, the flange portion 14 (see FIG. 2) of the pad main body 11 is formed by the gap between the gap forming portion 55 and the upper mold 51. From another point of view, the gap forming portion 55 of the main board 54 forms the receiving recess 15 (see FIG. 2) in the pad body 11.

As shown in FIGS. 4 and 5, side ridges 56 for forming the side grooves 16 in the base 12 of the pad body 11 project downward from both ends in the short side direction of the main board 54. The side ridges 56 extend along the long side direction of the main board 54.

As shown in FIG. 5, the side ridges 56 (corresponding to the “molded protrusions” of the present invention) arranged on one side (the right side in FIG. 5) of the main board 54 in the short side direction are provided. A stepped portion 57 is formed in which the tip end side of the side ridge 56 is stepped and narrowed. Then, the wide portion 20A of the accommodating recess 20 in the pad body 11 is formed by the wide portion 56A on the base end side of the side ridge 56 from the step portion 57, and the width of the side ridge 56 on the tip side of the step portion 57 is narrow. The narrow portion 20B of the accommodating recess 20 is formed by the portion 56B. More specifically, the stepped portion 57 is formed in a portion of the side ridges 56 facing the other side in the short side direction of the main board 54 (a portion facing the left side in FIG. 5), and the side ridges 56 are formed. The narrow portion 56B of the above is arranged closer to one side in the short side direction of the main board 54.

A locking protrusion 60 projects outward in the width direction from the narrow portion 56B of the side protrusion 56. As shown in FIG. 4, the locking protrusions 60 are provided in a plurality of sets along the extending direction of the side protrusions 56, with two sets protruding from one side and the other side in the width direction. There is. The amount of protrusion of the locking protrusion 60 is slightly larger than the thickness of the reinforcing face material 30.

As shown in the enlarged view of FIG. 5, the surface of the locking protrusion 60 facing the tip end side of the side protrusion 56 is a vertical surface 61 arranged substantially perpendicular to the protruding direction of the side protrusion 56. It has become. Further, the surface of the locking protrusion 60 facing the base end side of the side protrusion 56 is an inclined surface inclined so as to reduce the protrusion amount of the locking protrusion 60 toward the base end side of the side protrusion 56. It is 62.

In detail, as shown in the enlarged view of FIG. 4, the locking protrusion 60 is formed in a pentahedron shape having a trapezoidal bottom portion 60B and a linear top portion 60T. The bottom portion 60B is formed in an isosceles trapezoidal shape in which the tip end side of the side protrusion 56 is wide, and the vertical surface 61 and the inclined surface 62 of the locking protrusion 60 are the tip end side (that is, the locking protrusion 60) of the locking protrusion 60. It is formed in a trapezoidal shape that narrows toward the top 60T).

As shown in FIG. 5, the outer surface of the core 53 is provided with a plurality of magnets 65 that are coupled to the magnetic body 33 of the reinforcing surface material 30. The plurality of magnets 65 are arranged so as to avoid the narrow portion 56B of the side ridge 56, and specifically, the main surface of the gap forming portion 55 facing the upper mold 51 and the wide portion 56A of the side ridge 56. It is provided on a surface facing the center side of the board 54, a lower surface of a central portion of the main board 54, and the like.

In the present embodiment, the "fixing means" of the present invention is configured from the locking protrusion 60 and the magnet 65.

The seat pad 10 is manufactured as follows. First, a reinforcing face material 30 having an opening 31, an engagement hole 32, and a magnetic body 33 is prepared. The engaging holes 32 are formed in the vicinity of the opening 31 of the reinforcing face material 30, and the magnetic material 33 is provided at a predetermined plurality of positions of the reinforcing face material 30 away from the opening 31. There is.

Next, as shown in FIG. 6, the reinforcing face material 30 is attached to the core 53 of the foam-molded mold 50 which has been opened. At this time, the core 53 is in a state of being separated from the upper mold 51.

The details of mounting the reinforcing face material 30 are as follows. That is, first, while passing the tip of the side ridge 56 (specifically, the narrow portion 56B) on one side in the short side direction of the core 53 through the opening 31 of the reinforcing face material 30, the reinforcing face material 30 is passed. Cover the side ridge 56. Next, the plurality of locking protrusions 60 of the narrow portion 56B of the side protrusions 56 are passed through the plurality of engagement holes 32 of the reinforcing face material 30. Then, while hooking the plurality of locking protrusions 60 to the plurality of engaging holes 32, the plurality of magnetic bodies 33 of the reinforcing face material 30 are magnetically attracted to the plurality of magnets 65 of the core 53. At this time, the reinforcing surface material 30 is brought into close contact with the outer surface of the side ridge 56 by giving tension to the reinforcing surface material 30 by pulling a portion of the reinforcing surface material 30 away from the opening 31. Is possible. In particular, as shown by an arrow in FIG. 6, when the magnetic material 33 is attracted to the magnet 65 provided on the facing surface of the gap forming portion 55 of the core 53 with the upper mold 51, the reinforcing face material is used. Since the 30 is wound from the lower side of the core 53 to the upper side through the side, it is possible to improve the adhesion between the reinforcing face material 30 and the side ridge 56.

When the attachment of the reinforcing face material 30 to the core 53 is completed, the core 53 is attached to the upper mold 51. Next, the foamed resin raw material 80 is injected into the molding recess 52A of the lower mold 52, and the foam molding mold 50 is closed (see FIG. 7). Then, the foamed resin raw material 80 is foamed in the foam molding mold 50. Then, in the foam molding die 50, the pad body 11 integrated with the reinforcing face material 30 is molded (see FIG. 9).

By the way, in the present embodiment, since the step portion 57 is provided on the side ridge 56 on one side in the short side direction of the core 53, when the reinforcing face material 30 is attached to the core 53, it is used for reinforcement. There is a problem that the face material 30 is lifted from the stepped portion 57, and the reinforcing face material 30 is difficult to adhere to the side ridge 56. This problem is solved by foaming the foamed resin raw material 80. That is, as shown in FIG. 8, when the foamed resin raw material 80 foams and expands, the reinforcing face material 30 is pressed against the step portion 57 and comes into close contact with the side ridge 56. Here, since the portion of the reinforcing face material 30 away from the opening 31 is fixed to the core 53 by the magnetic attraction of the magnetic body 33 and the magnet 65, the reinforcing face material 30 is pressed against the step portion 57. Even if an excessive tension is applied to the reinforcing face material 30, the position of the magnetic body 33 is displaced with respect to the magnet 65, so that the reinforcing face material 30 is prevented from being damaged.

When the pad body 11 is molded, the foam molding die 50 is opened, and the seat pad 10 in which the pad body 11 and the reinforcing face material 30 are integrated is removed from the foam molding die 50. With the above, the seat pad 10 is completed.

More specifically, when the foam molding die 50 is opened, the pad body 11 is separated from the lower die 52 together with the core 53 by the flange portion 14 being caught by the gap forming portion 55 of the core 53. (See FIG. 10). Further, when the core 53 is removed from the upper mold 51, the pad main body 11 is separated from the upper mold 51. Then, the pad body 11 is removed from the core 53. Here, when the pad body 11 is removed from the core 53, the locking protrusion 60 may be undercut. However, as shown in FIG. 11, in the present embodiment, the locking protrusion 60 is included. The surface of the side ridge 56 facing the base end side is an inclined surface 62 inclined so as to reduce the amount of protrusion of the locking ridge 60 toward the base end side of the side ridge 56, so that the elasticity is increased. The held pad body 11 can be smoothly removed from the core 53.

In the foam molding mold 50 of the present embodiment, when the reinforcing face material 30 is attached to the core 53, the locking protrusion 60 provided at the tip end portion (narrow portion 56B) of the side protrusion 56 in the core 53. Is locked to the engagement hole 32 formed in the vicinity of the opening 31 in the reinforcing face material 30. Further, the magnet 65 provided at a predetermined position of the core 53 magnetically attracts to the magnetic body 33 provided at the portion of the reinforcing face material 30 away from the opening 31. This makes it possible to reduce the number of magnetic bodies 33 arranged near the portion of the seat pad 10 that is cleaved by the airbag device 90, and suppresses scattering of the magnetic body 33 when the airbag device 90 is activated. Will be done.

Further, in the method of manufacturing the seat pad 10 using the foam molding mold 50, the engaging hole 32 of the reinforcing face material 30 is hooked on the locking protrusion 60 to reinforce the reinforcing face material 30 while giving tension to the reinforcing face material 30. The magnetic body 33 of the surface material 30 can be magnetically attracted to the magnet 65. As a result, the reinforcing face material 30 can be brought into close contact with the outer surface of the core 53, and the foamed resin raw material 80 is suppressed from entering between the core 53 and the reinforcing face material 30.

[Other embodiments]
The present invention is not limited to the above embodiment, and for example, embodiments as described below are also included in the technical scope of the present invention, and various other than the following, as long as they do not deviate from the gist. It can be changed and implemented.

(1) In the above embodiment, as shown in FIG. 12, the opening edge of the engagement hole 32 of the reinforcing face material 30 is received on the surface of the locking protrusion 60 facing the tip end side of the side protrusion 56. The receiving groove 60U may be formed. In this case, the surface of the locking protrusion 60 facing the tip end side of the side protrusion 56 may be a vertical surface 61 or an inclined surface inclined with respect to the protruding direction of the side protrusion 56. good.

(2) In the above embodiment, the surface of the locking protrusion 60 facing the tip end side of the side ridge 56 is arranged substantially perpendicular to the protrusion direction of the side ridge 56, but the side ridge 56 is arranged. It may be inclined so as to face the narrow portion 56B side of 56.

(3) The above configurations (1) and (2) may be applied to only one of the locking protrusions 60 on one side and the other side in the width direction of the side protrusions 56, or may be applied to both. You may.

(4) In the above embodiment, the step portion 57 may not be provided on the side ridge 56. In this case, it is preferable that the side ridges 56 are configured to become narrower toward the tip side, and the narrowest portion of the side ridges 56 is in the short side direction of the main board 54. It is more preferable that they are arranged close to one side.

10 Seat pad 11 Pad body 20 Storage recess 30 Reinforcing face material 31 Opening 32 Engagement hole 33 Magnetic material 50 Foam molding type 51 Upper type 52 Lower type 53 Core 56 Side ridge 60 Locking ridge 62 Inclined surface 65 Magnet 90 airbag device

The present invention relates to a seat pad .

In the method for manufacturing a seat pad disclosed in Patent Document 1, in a foam molding mold, a molding protrusion for forming a storage recess in which an airbag device is housed is inserted into an opening of a reinforcing surface material, and the reinforcing surface is inserted. The material is overlapped and fixed on the outer surface of the molding protrusion. Next, the pad body is molded by foaming the resin in the foam molding mold, and the reinforcing face material is integrally fixed to the pad body.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seat pad capable of making it difficult for a magnetic material to scatter when an airbag device is operated.

Claims (5)

It has a pad body having a storage recess for accommodating an airbag device, and a reinforcing surface material laid on the inner surface of the storage recess, and an opening of the pad body provided in the reinforcing surface material. The portion overlapping with is a foam molding mold for foam molding a seat pad that opens when the airbag device is operated.
It has a molding protrusion for forming the accommodating recess, and a fixing means for superimposing and fixing the reinforcing face material on the outer surface of the molding protrusion with the tip of the molding protrusion inserted into the opening. death,
The fixing means is
It is provided on the proximal end side of the tip end portion of the molding protrusion with respect to the portion inserted through the opening portion, and is engaged with the engaging hole formed in the vicinity of the opening portion in the reinforcing face material. At the stop and
A foam molding mold having a magnetic material and a magnet that magnetically attracts a magnetic material provided in a portion of the reinforcing face material that is distant from the opening. The molding protrusion protrudes along the opening / closing direction of the foam molding mold, and the molding protrusion is formed.
The locking protrusion protrudes in a direction intersecting the protruding direction of the molded protrusion, and the surface of the locking protrusion facing the tip end side of the molded protrusion is relative to the protruding direction of the molded protrusion. The surface of the locking protrusions that faces the base end side of the molding protrusions gradually forms a vertical surface that is arranged substantially vertically, and the amount of protrusion of the locking protrusions gradually increases toward the base end side. The foam molding mold according to claim 1, which has an inclined surface for reducing the size. Of the locking protrusion and the magnet of the fixing means, only the locking protrusion is provided on the tip side from the middle position of the molding protrusion, and the base end side of the molding protrusion from the middle position. The foam molding mold according to claim 1 or 2, wherein the magnet is provided in the above. It has an upper mold, a lower mold, and a core addressed to the upper mold.
The outer edge portion of the core is provided with an outer edge facing portion facing the upper mold at a distance from the lower side.
The molding protrusion protrudes downward from the outer edge facing portion and
The foam molding mold according to any one of claims 1 to 3, wherein the magnet includes a magnet having an outer edge facing portion arranged on a surface facing the upper mold. A method for manufacturing a seat pad using the foam molding mold according to any one of claims 1 to 4.
An engaging hole penetrating the vicinity of the opening is formed in the reinforcing face material.
In fixing the reinforcing face material to the molding protrusion, after locking the locking protrusion of the foam molding mold in the engagement hole of the reinforcing face material, the magnetism of the reinforcing face material A method for manufacturing a seat pad, which magnetically attracts a body to the magnet of the foam molding mold.

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