JP2006188186A - Interior part for vehicle with airbag door part, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior part for a vehicle with an airbag door part, and a method of manufacturing the same, capable of prohibiting breakage of a bridge part even when a flap part is shrunk. <P>SOLUTION: This interior part 1 for a vehicle with an airbag door part is provided with an interior part main body 3, and a reinforcing member 11 of resin welded with a back surface 3b of it. The reinforcing member 11 comprises a frame member part 15 welded with an outer circumferential part of the airbag door part 9, and two flap parts 21 and 23 integrally connected to the frame member part 15 by hinges 29 and 33, and welded with the airbag door part 9. The flap parts 21 and 23 are integrally connected to each other at terminal end parts by the bridge part 25 formed thin at a center. The bridge part 25 is molded in a warping form backward, and as the flap parts 21 and 23 are welded with the airbag door part 9, the warping is extended. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an interior part for a vehicle with an airbag door portion such as an instrument panel having an airbag door portion that is opened by operation of an airbag device in the event of a vehicle collision, and a method for manufacturing the same.

  In recent years, most vehicles are equipped with an airbag device for ensuring the safety of passengers in the event of a vehicle collision. And this airbag apparatus is generally attached to the back surface side of the instrument panel with an airbag door part. In addition, the instrument panel with an airbag door part is made of an instrument panel body provided by being partitioned by an airbag deployment tear line in which the airbag door part does not reach the surface, and a resin made welded to the back surface thereof. A reinforcement body, and the reinforcement body is integrally connected to the frame body portion by a hinge and welded to the airbag door portion. And a flap portion.

  In Patent Document 1, an air bag case that stores an air bag in a folded state, and a break that determines an opening shape for deploying an air bag on the back surface of an interior panel (interior product body) opposite to the opening of the air bag case Reinforcement that reinforces the rear surface of the interior panel corresponding to the break open portion and the peripheral area of the opening, and connects the air bag case to each other by forming a groove for use (air bag deployment tear line) An automotive airbag device including a frame (reinforcing body) is disclosed. In the automotive airbag device disclosed in the publication, the reinforcing frame body includes a frame body provided with a locking portion for connecting the airbag case, and a break opening portion formed integrally with the upper portion of the frame body. It is comprised by the fracture | rupture reinforcement part (flap part) and the edge reinforcement part (frame body part) which reinforces the back surface corresponding to the opening peripheral region of a fracture | rupture opening | release part. In addition, two rupture reinforcing portions are provided. Each fracture reinforcing portion is integrally formed on the upper portion of the frame main body via a hinge portion (hinge) having a wavy bent portion, and below the surface on which the edge reinforcing portion is formed from the frame main body. It is formed so as to extend upward, and is connected to a fracture reinforcing portion on the opposite side by a thin portion.

When this reinforcing frame is welded to the back surface of the interior panel, the edge reinforcing portion is positioned at the opening periphery of the fracture opening portion, and the hinge portion is compressed and biased toward the inclined surface in the expansion direction of the edge reinforcing portion. Position with. At this time, since the fracture reinforcing portion is formed as described above, the length of the fracture reinforcing portion corresponding to the back surface of the interior panel is increased, and the portion that is vibration welded to the back surface of the interior panel is increased. Therefore, it is described that the reinforcing frame can be reliably welded to the back surface of the interior panel.
JP 2004-66955 A

  By the way, in the instrument panel with an airbag door part, the reinforcement body is integrally connected by a frame body part welded to the outer peripheral part of the airbag door part and the frame body part by a hinge and the airbag door part. And a plurality of flap portions welded to each other. Here, the frame portion forms a skeleton constituting the reinforcing body, and therefore needs to be rigid. On the other hand, the flap portion must be opened together with the airbag door portion when the airbag is deployed. Requires high toughness. Therefore, the reinforcing body is formed in a pellet form from which a frame body portion is molded with polypropylene (PP) resin containing glass fiber, which can obtain a highly rigid molded product by two-stage injection molding, and a tough molded product is obtained. The flap portion and the hinge are integrally formed with the frame portion of the polyolefin-based thermoplastic elastomer resin (TPO).

  Moreover, in order to keep the space | interval between several flap parts constant, the some flap part is mutually connected between the terminal parts by the bridge part formed in the center thinly. This bridge portion is also formed of the same polyolefin-based thermoplastic elastomer resin (TPO) as the flap portion.

  However, the polyolefin-based thermoplastic elastomer resin (TPO) forming the flap portion and the bridge portion has a remarkably large shrinkage when the temperature is lowered. Therefore, in the process of cooling after forming the flap portion, there is a problem that the bridge portion may be pulled from both sides due to contraction of the flap portion, leading to cutting.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle interior product with an airbag door portion that prevents the bridge portion from being cut even if the flap portion contracts, and its manufacture. Provide a method.

  The vehicle interior product with an airbag door part of the present invention that achieves the above object is an interior product body provided by being partitioned by an airbag deployment tear line in which the airbag door part does not reach the surface, and the back surface thereof. A vehicle-made interior with an airbag door portion, comprising: a frame body portion welded to an outer peripheral portion of the airbag door portion; and A plurality of flap portions that are integrally connected to the frame body portion and hinges and welded to the airbag door portion, and the plurality of flap portions are mutually connected by a bridge portion that is formed with a thin center. The terminal portions are integrally connected to each other, the bridge portion is formed in a shape warped on the back surface side, the plurality of flap portions are welded to the airbag door portion, and the warpage is extended. And

  The manufacturing method of an interior part for a vehicle with an air bag door part according to the present invention that achieves the above object includes an interior part body provided by being partitioned by an air bag deployment tear line in which the air bag door part does not reach the surface; A resin reinforcing body for storing an airbag device, which is welded to the back surface thereof, and a manufacturing method of an interior part for a vehicle with an airbag door part, each including a frame part and the frame part And a plurality of flap portions integrally connected by a hinge, and the plurality of flap portions are integrally connected to each other by a bridge portion having a thin center at the center, and the bridge A step of preparing a reinforcing body formed in a shape in which the portion warps to the back side, and an interior product main body, the frame body portion is welded to the outer peripheral portion of the airbag door portion, and the warpage of the bridge portion is Over the airbag door to stretch Characterized by comprising a step of welding a plurality of flaps section.

  According to the vehicle interior part with an airbag door part of the present invention and the manufacturing method thereof, since the bridge part is formed in a shape warped on the back side and there is a dimensional margin, the cooling process after forming the flap part The cutting of the bridge part due to their contraction at is prevented. Further, since the warp is extended by welding the plurality of flap portions to the airbag door portion, the bridge portion is cut with good response when the airbag is deployed, and the flap portion is opened together with the airbag door portion.

  As described above, according to the present invention, cutting of the bridge portion due to contraction of the flap portion in the cooling process after the formation of the flap portion is prevented. Further, when the airbag is deployed, the bridge portion is cut with good response, and the flap portion is opened together with the airbag door portion.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a vehicle interior with an airbag door portion according to the present invention will be described in detail with reference to the drawings, taking an instrument panel with an airbag door portion as an example. In addition, this invention is not limited to embodiment shown below.

  FIG. 1 shows a front passenger seat portion of an instrument panel 1 with an airbag door. FIG. 2 shows the reinforcing body 11. 3 to 8 show a cross-sectional structure taken along line III-III in FIG. 2 and a cross-sectional structure taken along line VIII-VIII, respectively. FIG. 9 shows the bridge portion 25. FIG.10 and FIG.11 shows the cross-section of the instrument panel 1 with an airbag door part when an airbag expand | deploys. 12 and 13 are cross-sectional views showing steps of forming the reinforcing body 11, and are cross-sectional views corresponding to FIG. 3, respectively. FIG. 14 is a cross-sectional view showing a welding process between the instrument panel main body 3 and the reinforcing body 11, and is a cross-sectional view corresponding to FIG. 1 and 8 is the “vehicle width direction”. The horizontal direction in FIGS. 3 to 7 is the “vehicle body longitudinal direction”. The vertical direction in FIGS. 3 to 7 is the “vehicle body vertical direction”.

  As shown in FIGS. 3 to 7, the instrument panel 1 with an airbag door portion includes an instrument panel main body (interior product main body) 3 and a reinforcing body for storing the airbag device 51 attached to the back surface 3 b side. 11.

  The instrument panel body 3 is a resin molded product that is injection-molded with polypropylene (PP) resin or the like. An air bag deployment tear line 5 that does not reach the front surface 3 a is formed in a “day” shape on the back surface 3 b of the front position of the passenger seat of the instrument panel body 3. As shown in FIG. 1, a pair of horizontally-long rectangular airbag door portions 9 are arranged in the front-rear direction by the section of the airbag deployment tear line 5. Further, a portion of the surface 3 a corresponding to the airbag deployment tear line 5 of the instrument panel main body 3 is a planned fracture portion 7 that is easily broken by the operation of the airbag device 51.

  The reinforcing body 11 is also an injection-molded resin molded product, and the manufacturing method thereof will be described in detail later. The reinforcing body 11 includes a substantially rectangular cylindrical guide portion 13 in which the airbag device 51 is accommodated. The guide portion 13 covers a portion in which a substantially rectangular opening 13a (hereinafter referred to as “shooting port 13a”) on the instrument panel body 3 side is surrounded by the airbag deployment tear line 5 of the instrument panel body 3. It is provided as follows. At the end of the guide portion 13 on the shooting port 13a side, a frame body portion 15 extending continuously outward from the guide portion 13 is provided. The guide portion 13 and the frame body portion 15 are formed of a resin material such as polypropylene (PP) resin containing glass fiber from which a highly rigid molded product can be obtained.

  The guide portion 13 has a plurality of engagement holes 13d (only one is shown in FIG. 4) spaced apart from each other on the front and rear frame walls 13b and 13c, each having a substantially rectangular cylindrical shape. Is formed. And the airbag apparatus 51 is fixed in the state which hook 53 (only one is described in FIG. 4) provided in the side surface engaged with the engaging hole 13d, and was accommodated in the guide part 13. FIG.

  As for the frame part 15, the welding rib 15a is formed in the grid | lattice form on the surface at the side of the instrument panel main body 3. FIG. The guide portion 13 and the frame portion 15 are attached to the outer peripheral portion of the airbag door portion 9 on the back surface 3b of the instrument panel body 3 with the welding rib 15a being vibration welded.

  A stepped portion 37c is formed at an intersecting portion 37 between the guide portion 13 and the frame body portion 15 so that the shooting port 13a expands discontinuously. As shown in FIG. 8, large ribs 37 a with relatively high height and small ribs 37 b with relatively low height are alternately arranged in the longitudinal direction on each of the front side portion and the rear side portion of the stepped portion 37 c. Are formed integrally so as to partition the stepped portion 37c with a space therebetween.

  As shown in FIG. 2, the reinforcing body 11 includes front and rear flap portions 21 and 23 having a horizontally long rectangular shape on the shooting port 13 a side of the guide portion 13. The front side and rear side flap parts 21 and 23 are provided so as to close the shooting port 13a. The front flap portion 21 is molded integrally with the front side portion of the step portion 37 c on the shooting port 13 a side of the guide portion 13 through the front hinge 29. On the other hand, the rear side flap portion 23 is molded integrally with the rear side portion of the step portion 37 c on the shooting port 13 a side of the guide portion 13 via the rear hinge 33. In the front flap portion 21 and the rear flap portion 23, the rear side portion of the former and the front side portion of the latter are connected to each other on both sides via a bridge portion 25. These front and rear flap portions 21 and 23, front and rear hinges 29 and 33, and bridge portion 25 are polyolefin-based thermoplastic elastomer resin materials that are capable of obtaining a tough molded product and that are not easily damaged particularly at low temperatures. (TPO) or the like. That is, as for these, the guide part 13 and the frame part 15 are shape | molded by the different resin material.

  The front and rear flap portions 21 and 23 are formed on the surface on the instrument panel body 3 side with welding ribs 21a and 23a in a lattice shape, while the back surfaces are formed on a flat surface so as not to damage the airbag. Yes. The front and rear flap portions 21 and 23 are attached to the airbag door portion 9 on the back surface 3b of the instrument panel body 3 with the welding ribs 21a and 23a being vibration welded. As shown in FIG. 2, through holes 21 b and 23 b are formed in the left and right sides of each of the front and rear flap portions 21 and 23. The peripheral edges of these through holes 21b and 23b are formed in annular ridges 21c and 23c protruding toward the instrument panel main body 3 side. The annular ridges 21c and 23c are formed to be lower than the welding ribs 21a and 23a.

  The front hinge 29 includes a pivoting action portion 29b having a substantially U-shaped cross-section opened on the back side coupled to the stepped portion 37c of the guide portion 13, and a front side portion of the front flap portion 21 continuous to the pivoting action portion 29b. And an extending action portion 29c having a substantially U-shaped cross section that is open on the front surface side, and is formed in a substantially S-shaped cross section as a whole. On the front flap portion 21 side of the rotating action portion 29 b of the front hinge 29, a front rib 31 of a ridge extending toward the back surface 3 b of the airbag door portion 9 of the instrument panel body 3 is in the longitudinal direction of the front hinge 29. Are formed integrally.

  The rear hinge 33 has a substantially U-shaped rotating action portion 33b opened on the back side coupled to the stepped portion 37c of the guide portion 13, and a rear side of the rear flap portion 23 continuously to the turning action portion 33b. And an extending action portion 33c having a substantially U-shaped cross section that is open on the surface side coupled to the side portion, and has a generally S-shaped cross section as a whole. On the rear flap portion 23 side of the rotating action portion 33b of the rear hinge 33, a rear rib 35 of the ridge extending toward the back surface 3b of the airbag door portion 9 of the instrument panel body 3 is provided on the rear hinge. It is integrally formed along the longitudinal direction of 33.

  The front and rear hinges 29 and 33 are in a positional relationship facing the front position and the rear position, respectively, of the three airbag deployment tear lines 5 extending in parallel in the left-right direction. As shown in FIG. 11, the front rib 31 is provided such that the side surface is positioned at the airbag deployment tear line 5 at the front position when the airbag door portion 9 is opened by the airbag deployment. Further, as shown in FIG. 11, the rear rib 35 is also provided so that the side surface is positioned at the airbag deployment tear line 5 at the rear position when the airbag door portion 9 is opened by the airbag deployment. The gap between the front flap portion 21 and the rear flap portion 23 is a position corresponding to the airbag deployment tear line 5 at the intermediate position.

  As shown in FIG. 8, a plurality of welding ribs 37d are spaced apart from each other along the longitudinal direction on the base portions 29a, 33a of the front and rear hinges 29, 33 molded integrally with the stepped portion 37c. In this case, the large rib 37a provided in the stepped portion 37c is embedded. That is, the large rib 37a constitutes a support rib that supports the welding rib 37d. This welding rib 37d is attached to the back surface 3b of the instrument panel body 3 by vibration welding.

  As shown in FIG. 9A, the bridge portion 25 is formed in a substantially V-shaped cross section with the center warped on the back side of the thin portion 25a, as shown in FIG. 9A. However, the front and rear flap portions 21 are formed. , 23 are welded to the airbag door portion 9, and the warpage is extended. As shown in FIG. 9B, the back surface is flush with the back surfaces of the front and rear flap portions 21, 23. Yes.

  Next, the airbag deployment operation | movement of this instrument panel 1 with an airbag door part is demonstrated based on FIG.10 and FIG.11.

  First, when the vehicle collides and receives an impact of a certain level or more, the airbag device 51 is activated and the deployment of the airbag is started by the inflator.

  Next, with the deployment of the airbag, as shown in FIG. 10, the extending action portions 29c and 33c having substantially U-shaped cross sections of the front and rear hinges 29 and 33 are extended, and the front and rear flap portions are extended. 21 and 23 are pushed upward, and the bridge portion 25 is cut at the thin portion 25a, and the planned break portion 7 is broken along the airbag deployment tear line 5 so that the airbag door portion 9 becomes the instrument panel body 3. Separated from.

  As the airbag further develops and the airbag jumps out of the opening of the instrument panel body 3, as shown in FIG. 11, the front and rear hinges 29, 33 have a substantially U-shaped cross section. The pivoting action portions 29b and 33b are pivoted outward, and the pair of airbag door portions 9 are opened in a double-spread shape. At this time, the side surface of the front rib 31 is positioned at the position of the airbag deployment tear line 5 and is sandwiched between the cut end of the airbag door portion 9 and the front hinge 29. Further, when the side surface of the rear rib 35 is positioned at the position of the airbag deployment tear line 5, the rear rib 35 is sandwiched between the cut end of the airbag door portion 9 and the rear hinge 33.

  If it is the instrument panel 1 with an airbag door part demonstrated above, since the bridge part 25 is shape | molded in the shape which curved the back side, and there is a margin of a dimension, the front side and the rear flap parts 21 and 23 Cutting of the bridge portion 25 due to the contraction in the cooling process after molding is prevented. Further, since the warpage is extended by welding the front side and rear side flap parts 21 and 23 to the airbag door part 9, the bridge part 25 is cut with good response when the airbag is deployed, and the airbag door part 9 At the same time, the front and rear flap portions 21 and 23 are opened.

  Next, the manufacturing method of this instrument panel 1 with an airbag door part is demonstrated.

<Instrument panel body molding process>
The instrument panel body 3 is molded by injection molding, in which pellet-shaped polypropylene (PP) resin or the like is put into a hopper of an injection molding machine, melted while screw kneading in a cylinder, and injected from a gate to a mold. To do.

  In the molded instrument panel main body 3, an airbag deployment tear line 5 that does not reach the front surface 3 a is formed on the rear surface 3 b at the front passenger seat position, thereby forming an airbag door portion 9.

<Reinforcement molding process>
The reinforcing body 11 is also formed by injection molding. However, since the guide portion 13 and the front and rear flap portions 21 and 23 are formed of different resin materials, the two-stage step including the first and second molding steps is performed. Molded by injection molding.

-First molding step-
The guide part 13 and the frame part 15 of the reinforcing body 11 are filled with a glass fiber-filled polypropylene (PP) resin or the like that can obtain a highly rigid molded product in the hopper of an injection molding machine, and screwed in the cylinder. Injection molding in which the molten resin is injected from the gate into a cavity formed between the cavity mold 71 and the core mold 72 of the first mold 70 as shown in FIG. To form a single piece.

  In the molded guide part 13 and the frame part 15, a step part 37 c, a large rib 37 a and a small rib 37 b are formed at the intersecting part 37.

-Second molding step-
The front and rear flaps 21 and 23 of the reinforcing body 11 and the front and rear hinges 29 and 33 are formed into pellet-shaped polyolefin-based thermoplastic elastomer resin (a high-toughness molded product can be obtained in a hopper of an injection molding machine ( TPO) and the like are introduced and melted while screw kneading in the cylinder. As shown in FIG. 13, the guide portion 13 and the frame portion 15 formed in the first forming step are set in the core die 63 in advance. In the cavity formed between the cavity mold 61 and the core mold 63 of the second mold 60 and in the cavity formed between the guide part 13 and the frame body part 15 set on the core mold 63. The whole is integrally formed by injection molding in which the molten resin is injected from the gate.

  In the molded front and rear flap portions 21 and 23 and the front and rear hinges 29 and 33, the front and rear hinges 29 and 33 are formed on the stepped portion 37 c of the intersection portion 37 of the guide portion 13 and the frame body portion 15. 33 is formed integrally and a welding rib 37d in which a large rib 37a is embedded is formed.

<Welding process>
As shown in FIG. 14, the instrument panel main body 3 is set on the base 73, the reinforcing body 11 is set on the vibration welding jig 74, and the outer periphery of the airbag door portion 9 on the back surface 3 b of the instrument panel main body 3. While positioning the frame body part 15 of the reinforcing body 11 at the part, the front and rear flap parts 21 and 23 are positioned on the airbag door part 9. Then, the reinforcing body 11 is pressed against the instrument panel main body 3 using the vibration welding jig 74 and vibrated in the lateral direction 75 at a high frequency, whereby the reinforcing body 11 is instrumented by the welding ribs 15a, 21a, 23a, and 37d. It is welded to the ment panel body 3. As the front and rear flap portions 21 and 23 are welded to the airbag door portion 9, the warpage of the bridge portion 25 is extended, and as shown in FIG. 9B, the front and rear flap portions are formed. It is possible to open the interval of 21 and 23 with high accuracy by the length of the bridge portion 25. Further, the back surface is flush with the back surfaces of the front and rear flap portions 21 and 23, and therefore does not become an obstacle to the airbag device 51. At this time, since the large rib 37a is embedded in the welding rib 37d, the welding rib 37d is pressed against the instrument panel body 3 with high accuracy without being deformed, and is surely welded. Further, since the peripheral edges of the through holes 21b and 23b on the surface side of the front and rear flap portions 21 and 23 are formed in the annular ridges 21c and 23c, burrs generated by the welding of the welding ribs 21a and 23a are formed in the through holes. It can prevent falling to the back surface side in which the airbag apparatus 51 was provided through 21b, 23b. Moreover, since the annular ridges 21c and 23c are formed to be lower than the welding ribs 21a and 23a, they do not become an obstacle when the front and rear flap portions 21 and 23 are welded to the airbag door portion 9. .

  If it is a manufacturing method of the instrument panel 1 with an airbag door part demonstrated above, since the bridge part 25 is shape | molded in the shape which curved the back side, and there is a margin of a dimension, the front side and the rear side flap part 21 , 23 is prevented from being cut by the contraction of the bridge portion 25 in the process of being cooled after forming. Further, the warp is extended by welding the front and rear flap portions 21 and 23 to the airbag door portion 9, and the distance between the front and rear flap portions 21 and 23 is equal to the length of the bridge portion 25. Since the air bag is opened with high accuracy, the bridge portion 25 is cut with good response when the air bag is deployed, and the front and rear flap portions 21 and 23 are opened together with the air bag door portion 9.

In the embodiment described above, the instrument panel 1 with an airbag door part is given as an example of the vehicle interior part with an airbag door part. It may be a vehicle interior product,
Further, in the above-described embodiment, the airbag deployment tear line 5 is formed in a “day” shape, and a pair of horizontally long rectangular airbag door portions 9 are vertically moved by the section of the airbag deployment tear line 5. However, the present invention is not limited to this. As shown in FIG. 13, the airbag deployment tear line 5 is formed in the shape of a "mouth". A configuration in which a single horizontally-long rectangular airbag door portion 9 is arranged by a section of the deployment tear line 5 may be used.

  Moreover, in the said embodiment, although it was set as the instrument panel main body 3 of the resin single layer, it is not limited to this in particular, It was coat | covered integrally by the resin-made base materials and its surface side shape | molded with resin etc. It may have a two-layer structure consisting of a resin skin.

  Moreover, in the said embodiment, although it was set as two flap parts, the front side and the rear side flap parts 21 and 23, it is not limited to this in particular, You may have a 3 or more flap part. . For example, a front flap part, a central flap part, and a rear flap part are provided, the front flap part and the central flap part are connected via a bridge part, and the central flap part and the rear flap part are connected. The structure connected via the bridge part may be sufficient.

  Moreover, in the said embodiment, although the reinforcement body 11 shall be comprised with the cylindrical guide part 13 and the frame part 15, it is not limited to this in particular, A reinforcement body does not have a guide part, The frame of the airbag device may be configured as a guide portion.

  As described above, the present invention is useful for vehicle interior parts with an airbag door portion such as an instrument panel having an airbag door portion that is opened by the operation of an airbag device in the event of a vehicle collision.

It is a partial perspective view of an instrument panel with an airbag door part. 2 is a front view of a reinforcing body 11. FIG. It is sectional drawing along the III-III line in FIG. It is sectional drawing along the IV-IV line in FIG. It is sectional drawing along the VV line in FIG. It is sectional drawing along the VI-VI line in FIG. It is sectional drawing along the VII-VII line in FIG. It is sectional drawing along the VIII-VIII line in FIG. It is an enlarged view of a bridge part. It is explanatory drawing which shows the expansion | deployment initial stage process of an airbag. It is explanatory drawing which shows the expansion | deployment final stage process of an airbag. It is a shaping | molding die sectional drawing of the cross section corresponding to FIG. 3 which shows the 1st shaping | molding step of the reinforcement body 11. FIG. FIG. 4 is a cross-sectional view of a mold corresponding to FIG. 3 illustrating a second forming step of the reinforcing body 11. It is a welding jig sectional view of the section corresponding to Drawing 3 showing the welding process of instrument panel main part 3 and reinforcement object 11. It is a partial perspective view of the instrument panel with an airbag door part of other embodiment.

Explanation of symbols

1 Instrument panel with airbag door (vehicle interior with airbag door)
3 Instrument panel body (interior product body)
3a Front surface 3b Back surface 5 Air bag deployment tear line 9 Airbag door portion 11 Reinforcing body 15 Frame body portion 21 Upper flap portion (flap portion)
23 Lower flap (flap)
25 Bridge 29 Upper hinge (hinge)
33 Lower hinge (hinge)
51 Airbag device

Claims (2)

A vehicle with an airbag door portion, comprising: an interior product body provided by being partitioned by an airbag deployment tear line where the airbag door portion does not reach the surface; and a resin reinforcing body welded to the back surface Interior parts for
The reinforcing body includes a frame body portion welded to the outer peripheral portion of the airbag door portion, a plurality of flap portions that are integrally connected to the frame body portion by hinges and are welded to the airbag door portion. Have
The plurality of flap portions are integrally connected between the terminal portions by a bridge portion having a thin center at the center,
The vehicle interior with an airbag door portion, wherein the bridge portion is formed in a shape warped on the back surface side, the plurality of flap portions are welded to the airbag door portion, and the warpage is extended. Goods. An interior product body provided by being partitioned by an airbag deployment tear line in which the airbag door portion does not reach the surface, and a resin reinforcing body for storing the airbag device welded to the back surface thereof. A method of manufacturing an interior product for a vehicle with an air bag door,
And a plurality of flap portions integrally connected to the frame portion by hinges, and the plurality of flap portions are mutually connected to each other by a bridge portion having a thin center. A step of preparing a reinforcing body in which the gaps are integrally connected and the bridge portion is formed in a shape warped on the back surface side, and an interior part main body;
Welding the frame portion to the outer peripheral portion of the airbag door portion, and welding the plurality of flap portions to the airbag door portion so that the warp of the bridge portion extends;
A method of manufacturing an interior product for a vehicle with an air bag door, comprising:

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