JP4371780B2 - Interior panel for vehicle with skin - Google Patents

Description

  The present invention relates to an improvement of a vehicle interior panel with a skin.

There exists an instrument panel like patent document 1 as an interior panel for vehicles with a skin as mentioned above. This instrument panel includes an instrument panel body having a skin adhered to the surface of a base material. A frame body as a structure for housing the airbag device is vibration welded to the back surface of the base material. The frame body is arranged so as to correspond to the airbag door portion inside the base portion, a base portion made of a substantially rectangular ring-shaped plate material, a pair of front and rear airbag devices extending downward from the back surface of the base portion, and the base portion. The reinforcing flap portion is connected to the inner peripheral portion of the base portion via a hinge portion. In the base portion and the flap portion, vibration welding ribs are provided so as to project in parallel in the vehicle longitudinal direction and extend in the vehicle width direction, with the welding ribs in contact with the back surface of the base material. By vibrating, the frame (base and flap) is vibration welded to the back surface of the base material.
JP 2001-294114 A (page 3, FIG. 2)

  By the way, when the epidermis is brought into close contact with the surface of the base material by, for example, vacuum drawing and is adhered with an adhesive (not shown), generally, as shown in FIG. Sometimes air is discharged from between the base material a and the skin c through the through hole b to the back surface side of the base material a. In addition, although the case where an interior panel is an instrument panel is shown in FIG. 12 similarly to patent document 1, the frame d d vibration-welded to the base material a back surface is substantially rectangular like each embodiment mentioned later. A cylindrical frame part e, a flange part f extending outward from the outer periphery of the upper end of the frame part e, and a hinge part (not shown) disposed inside the frame part e and inside the flange part f The frame portion e corresponds to the attachment portion of Patent Document 1, and the flange portion f corresponds to the base portion of Patent Literature 1.

  However, when the welding ribs h are projected in a lattice shape unlike the patent document 1 in order to increase the welding strength between the base material a and the frame body d (the flange portion f and the flap portion g), the space surrounded by the welding ribs h. i becomes a sealed space, air is confined in the through hole b and the space i communicating with the through hole b, and there is no escape space. In this space i, the volume of the space i decreases due to wear of the welding ribs h during vibration welding, and air expands due to frictional heat, so that the air pressure in the space i increases. In particular, the adhesion between the substrate a and the skin c Is still not sufficient, the skin c swells outward and the bulging portion j is easily formed, which deteriorates the appearance of the instrument panel k. In FIG. 12, l is a planned fracture portion formed thinly by a groove portion m surrounding a substantially rectangular shape.

  The present invention has been made in view of this point, and an object of the present invention is to prevent air from being trapped in the through hole of the base material and the welded portion communicating therewith.

In order to achieve the above object, the present invention is characterized in that a communication passage or a communication groove is provided in a structure or a welding rib, and a through-hole for discharging air from the base material is communicated with outside air through the communication passage or the communication groove. And

  Specifically, the present invention is directed to a vehicle interior panel with a skin in which a skin is bonded to the surface of the base material and a resin structure is vibration welded to the back surface of the base material, and the following solution is taken.

That is, the invention according to claim 1, in the upper Kimotozai, through holes for discharging the air from between the substrate and the skin when the skin bonded to the substrate rear surface side is formed, of the substrate and structures One side is formed with a grid-like welding rib protruding from the one side and vibration-welded to the other side, and the welding rib is provided with a communication passage that communicates the through hole with the outside air. .

According to a second aspect of the present invention, the base material is provided with a through hole for discharging air from between the base material and the skin to the back side of the base material when the skin is adhered, A lattice-shaped welding rib protruding from the one side and vibration-welded to the other side is formed, and in the structure, the communication hole opens in a space adjacent to the space surrounded by the welding rib corresponding to the through hole. The weld rib formed so as to be displaced with respect to the through hole and surrounding the through hole and the communication hole is adjacent to the space in which the communication groove is surrounded by the weld rib corresponding to the through hole and the communication hole. The through hole communicates with the outside air through a communication groove and a communication hole between the through hole and the communication hole.

According to the first and second aspects of the invention, since the welding ribs are in a lattice shape, the welding area between the base material and the structure can be increased, and the welding strength of both can be increased. Furthermore, the air in the through hole can be discharged from the communication path and the communication groove without staying with the air in the space surrounded by the welding ribs, especially when the adhesion between the base material and the skin is still insufficient. The pressure can surely prevent the bulging portion from being easily formed on the surface of the skin, thereby improving the appearance and increasing the commercial value. Moreover, since vibration welding can be performed without waiting until the adhesion between the substrate and the skin is sufficiently performed, an interior panel can be efficiently obtained in a short time.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

( Reference example )
FIG. 5 shows a front part of a passenger seat of an instrument panel 1 as an interior panel for a vehicle with a skin according to a reference example of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. The instrument panel 1 is made of a resin base material 3 formed of polypropylene (PP) or the like, and a resin that is brought into close contact with the surface of the base material 3 by, for example, vacuum drawing and is integrally bonded with an adhesive (not shown). An instrument panel body 7 having a two-layer structure consisting of a skin 5 is provided.

  On the back surface of the base material 3 of the instrument panel body 7, two opposing sides extend parallel to the vehicle width direction, and the other two opposing sides extend parallel to the vehicle body front-rear direction so as to surround a substantially rectangular shape in plan view. A groove portion 9 is formed, and a portion of the instrument panel main body 7 corresponding to the groove portion 9 is formed to be thin, so that a planned fracture portion 11 having a substantially rectangular shape in plan view is formed. And by the area | region enclosed by this fracture | rupture scheduled part 11, the airbag door part 13 which fractures | ruptures and opens the said fracture | rupture planned part 11 by the action | operation of the airbag apparatus 33 mentioned later at the time of a vehicle collision substantially respond | corresponds to the shooting port 19 mentioned later. It is defined as follows. The airbag door portion 13 is configured as a so-called seamless type in which the groove portion 9 that forms the planned fracture portion 11 cannot be identified from the surface side of the instrument panel body 7.

  A frame body 15 as a resin structure is fixed to the back surface of the base material 3 corresponding to the airbag door section 13 and the surrounding instrument panel body 7 by vibration welding. The frame body 15 includes a frame portion 17 formed in a substantially rectangular cylindrical shape. The frame portion 17 is arranged to face the front frame wall 17a extending in the vehicle width direction and the rear side of the front frame wall 17a. A rear frame wall 17b extending in the width direction, a left frame wall 17c (appearing in FIG. 4) extending in the vehicle longitudinal direction so as to connect the left edges of the front frame wall 17a and the rear frame wall 17b, and a right edge It comprises a right frame wall 17d extending in the longitudinal direction of the vehicle body so as to connect each other. Further, as shown in FIGS. 3 and 4, a substantially rectangular shooting port 19 for inflating the airbag is formed on the inner side of the opening end which is the upper end of the frame portion 17. A flange portion 21 that extends outward from the peripheral portion of the shooting port 19 so as to be substantially orthogonal to the frame portion 17 is integrally formed.

  A reinforcing resin flap portion 25 is disposed in the shooting port 19 of the frame portion 17. Since the flap portion 25 is opened together with the airbag door portion 13 by the operation of the airbag device 33, the flap portion 25 is formed of a high-toughness resin material that is not easily damaged in a low temperature state. On the other hand, the frame portion 17 and the flange portion 21 are formed of a resin material containing a relatively high rigidity glass fiber in order to reinforce the instrument panel body 7 around the airbag door portion 13. A hinge portion 27 that is curved in a substantially S shape is integrally formed at the base end of the flap portion 25, and a base portion 27a of the hinge portion 27 is an intersection of the frame portion 17 and the flange portion 21 that is one side of the vehicle body front side. The flap portion 25 is integrally connected to the peripheral portion in the flange portion 21 on one side thereof via the hinge portion 27 so that the shooting port 19 can be opened and closed.

  On the surfaces of the flange portion 21 and the flap portion 25, lattice-like welding ribs 31 are integrally projected in the vertical and horizontal directions, and the welding ribs 31 are also integrally projected on the base portion 27a of the hinge portion 27. The flange portion 21, the flap portion 25, and the base portion 27 a of the hinge portion 27 are fixed to the back surface of the base material 3 of the instrument panel body 7 by vibration welding via the welding rib 31, and the frame body 15 is attached to the back side of the instrument panel body 7. Has been placed. Thereby, the space S surrounded by the welding rib 31 is sealed between the base material 3 and the flange portion 21 and the flap portion 25 (see FIG. 1). The welding rib 31 may be provided on the base material 3 side.

  An air bag device 33 including an air bag and an inflator for protecting the passenger in the front passenger seat from an impact in the longitudinal direction of the vehicle body is housed in the frame portion 17, and the air bag device 33 includes a plurality of hooks. 35 are fixed at intervals in the vehicle width direction, and these hooks 35 are inserted into a plurality of engaging holes 17e formed at intervals in the vehicle width direction in the frame portion 17, and each hook 35 is engaged when the airbag device is operated. The frame body 15 is prevented from jumping out by being caught on the periphery of each engagement hole 17e.

  A screw member 37 projects downward from the lower end of the airbag device 33, and the screw member 37 is inserted into a through hole 39 a formed on one end side of a metal bracket 39, and a nut 41 is attached to the screw member 37. The bracket 39 is fastened to the lower end of the airbag device 33 by screwing. The other end of the bracket 39 is fixed by welding to a metal instrument panel reinforcement 43 that extends in the vehicle width direction and supports the instrument panel body 7. Thus, the lower end of the airbag device 33 is connected and supported to the instrument panel reinforcement 43 via the bracket 39.

  A stepped portion 45 having a substantially L-shaped cross section is formed at the intersection 29 of the frame portion 17 and the flange portion 21 at a portion where the base portion 27a of the hinge portion 27 is coupled so that the shooting port 19 expands. Thus, a bulging wall 49 having a substantially L-shaped cross section is formed outside the intersecting portion 29. The base portion 27a of the hinge portion 27 is molded and joined integrally with the step portion 45 and is vibration-welded to the back surface of the instrument panel body 7 and fixed. Accordingly, the hinge portion 27 and the planned fracture portion 11 approach the inner wall of the frame body 15 by the width of the stepped portion 45, and the distance between the welding rib 31 of the hinge portion 27 and the planned fracture portion 11 is reduced, and the airbag device 33. In operation, the instrument panel body 7 around the base portion 27a of the hinge portion 27 is not greatly bent so that the inflation pressure of the airbag is concentrated on the planned break portion 11 so that the planned break portion 11 is in a normal state. Can break.

  The procedure for integrally molding the base portion 27a of the hinge portion 27 to the step portion 45 is as follows. First, the frame portion 17 and the flange portion 21 are integrally formed in advance, and then the flap portion 25 is formed on the frame portion 17 by a mold. As shown in FIG. 4, so-called double injection molding (two-color molding) is performed in which the molds are integrally molded so as to be in a slightly expanded state. At this time, the base portion 27 a of the hinge portion 27 is integrally molded and coupled to the step portion 45. If the anchor portion 51 having a substantially T-shaped cross section is integrally formed along the longitudinal direction of the hinge portion 27 on the vertical wall of the stepped portion 45 as indicated by a virtual line in FIG. The step 45 is firmly connected.

  As shown in an enlarged detail in FIG. 1, an extended portion 53 is formed at the intersection 57 between the inner peripheral portion of the flange portion 21 and the frame portion 17 at the tip of the flap portion 25 on the side opposite to the hinge portion of the flap portion 25. It extends so as to be polymerized and is suspended at a substantially right angle. On the other hand, the intersecting portion 57 bulges outside the frame portion 17, and a shelf portion 55 having an L-shaped cross section is formed inside the bulged portion of the frame portion 17. And while the extension part 53 is made to correspond to the shelf part 55 so as to have a slight gap C1, the shelf part 55 supports the load applied to the airbag door part 13 from the surface side. The extended portion 53 is positioned with respect to the planned break portion 11. Moreover, the said flap part 25 has the clearance gap C2 between the vehicle width direction both sides of the said frame part 17, and has covered the said shooting mouth 19 (refer FIG. 3).

A through hole 59 for discharging air from between the base material 3 and the skin 5 to the back side of the base material 3 is formed at a location corresponding to the center of the base material 3 near the front end of the flap portion 25. The hole 59 communicates with one of the spaces S surrounded by the welding rib 31 between the base material 3 and the flap portion 25. On the other hand, a communication hole 61 constituting a communication path is formed through the center near the tip of the flap portion 25. The communication hole 61 communicates with the space S and allows the through hole 59 to communicate with the outside air. This is a feature of the reference example .

  The said flap part 25 is vibration welded to the base material 3 back surface of the instrument panel main body 7 with the flange part 21 as follows. First, the frame portion 17, the flange portion 21, and the flap portion 25 that are integrated as described above are rotated around the hinge portion 27 so that the flap portion 25 closes the shooting port 19 and disposed on the back surface of the instrument panel body 7. And it clamps with a jig | tool (not shown) from the front and back both sides. At this time, the extension portion 53 of the flap portion 25 is restricted from moving toward the flange portion 21 by the shelf portion 55. Thereafter, the instrument panel body 7 and the frame body 15 are relatively vibrated, and the frame body 15 is vibration welded to the back surface of the base material 3.

  In the instrument panel 1 configured as described above, when the vehicle collides, the airbag of the airbag device 33 is inflated by the operation of the inflator, and the airbag door portion 13 and the flap portion 25 are pressed upward by the inflation pressure. As a result, the hinge portion 27 extends in a straight line state and the airbag door portion 13 projects upward together with the flap portion 25 as shown in phantom lines in FIG. However, the hinge portion 27 in the linear state is rotated about the opening operation fulcrum and is opened upward in the front of the vehicle body.

Thus, in the reference example , since the welding ribs 31 are arranged in a lattice pattern, the welding area between the base material 3 and the frame 15 (the flange portion 21 and the flap portion 25) can be increased, and both of them can be used. It can be firmly welded.

Further, in the reference example , the through hole 59 and the space S surrounded by the welding rib 31 are communicated with the outside air through the communication hole 61, so that the air in the through hole 59 is in the space S surrounded by the welding rib 31. The frame 15 can be discharged from the communication hole 61 to the back side of the flap portion 25 without staying together with the air. In particular, the frame 15 is attached to the base 3 at a stage where the base 3 and the skin 5 are not yet sufficiently bonded. Even if vibration welding is performed on the back surface, it is possible to reliably prevent the bulging portion from being easily formed on the surface of the skin 5 due to air pressure, thereby improving the appearance and enhancing the commercial value. Moreover, since vibration welding can be performed without waiting until the base material 3 and the skin 5 are sufficiently bonded, the instrument panel 1 can be efficiently manufactured in a short time.

(Embodiment 1 )
6 and 7 show the instrument panel 1 as an interior panel with skin vehicle according to the first embodiment. In the first embodiment, the flap portion 25 is displaced with respect to the through hole 59 so that the communication hole 61 opens into the space S adjacent to the space S surrounded by the welding rib 31 corresponding to the through hole 59. Is formed. Further, the welding rib 31 surrounding the through hole 59 and the communication hole 61 includes a space S in which the communication groove 31 a is surrounded by the welding rib 31 corresponding to the through hole 59 and the communication hole 61 and a space S adjacent thereto. It is formed so as to communicate. Further, the through hole 59 communicates with the outside air through the communication groove 31 a between the communication hole 61 and the communication hole 61.

That is, in the instrument panel 1, the through hole 59 of the base material 3 and the communication hole 61 of the flap portion 25 are formed at positions shifted in the vehicle longitudinal direction without corresponding to the vertical direction. A communication groove 31a is formed in each of the four welding ribs 31 surrounding the communication hole 61 and the two welding ribs 31 arranged in the vehicle width direction so as to sandwich the through hole 59 on the front end side of the flap portion 25. The through hole 59 and the communication hole 61 are communicated with each other by the communication groove 31a of the welding rib 31 positioned between the through hole 59 and the communication hole 61, and the through hole 59 is defined by the communication groove 31a and the communication hole 61. They are allowed to communicate with the outside air. Further, the six spaces S around the communication hole 61 are communicated with the space S having the communication hole 61 by the other five communication grooves 31 a. The rest of the configuration is the same as that of the reference example, and therefore, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

Therefore, in Embodiment 1 , the same operation effect as a reference example can be produced. In addition, in the first embodiment, the six communication grooves 31a and the one communication hole 61 allow the six spaces S around the communication hole 61 to communicate with the outside air in addition to the space S having the communication hole 61. Compared with the case where the communication hole 61 is formed for each space S, it is only necessary to form one communication hole 61, so that the strength can be ensured.

(Embodiment 2 )
8 and 9 show an instrument panel 1 as an interior panel for a vehicle with a skin according to the second embodiment. In the instrument panel 1, communication grooves 31 a are respectively formed in the two welding ribs 31 arranged in the longitudinal direction of the vehicle body from the through hole 59 on the front end side of the flap portion 25. A gap C <b> 1 between 53 and the shelf 55 constitutes a communication path that communicates the through hole 59 with the outside air. The rest of the configuration is the same as that of the reference example, and therefore, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

Therefore, also in Embodiment 2 , the same operation effect as a reference example can be produced. In addition, in the second embodiment, since the use for the outside-air connection also existing gaps C1, to ensure strength with time only may minutes without forming the such communication hole 61 of the reference examples and the first embodiment can be omitted be able to.

(Embodiment 3 )
10 and 11 show a glove box 101 as an interior panel for a vehicle with a skin according to the third embodiment. The glove box 101 is composed of a glove box main body 115 and a lid 104 as a resin structure that accommodates small items. The lid 104 includes a lid inner panel 108 that forms a front wall of the glove box body 115 and a lid outer panel 107 that is a separate body from the glove box body 115. The lid outer panel 107 includes a resin base material 103 and a resin skin 105 that is brought into close contact with the surface of the base material 103 by, for example, vacuuming and is integrally bonded with an adhesive (not shown). The lid inner panel 108 is fixed to the back surface 103 by vibration welding and the lid 104 is assembled.

On the surface of the lid inner panel 108, grid-like welding ribs 131 are integrally projected vertically and horizontally, and the lid inner panel 108 is fixed to the back surface of the base material 103 of the lid outer panel 107 by vibration welding via the welding ribs 131. Then, the space S surrounded by the welding rib 131 is sealed between the base material 103 and the lid inner panel 108. As described in the reference example , the welding rib 131 may be provided on the substrate 3 side.

Similar to the reference example and the first and second embodiments, the base material 103 is formed with a through-hole 159 for discharging air from between the base material 103 and the skin 105 to the back side of the base material 103 when the skin is bonded. The through hole 159 communicates with one of the spaces S between the base material 103 and the lid inner panel 108. On the other hand, communication grooves 131a are formed in the five welding ribs 131 arranged from the through hole 159 toward one end in the vehicle width direction, and the communication holes 131a communicate the through hole 59 with the outside air. It constitutes a passage.

Therefore, in the third embodiment, the same effects as the reference example can be obtained, and, similarly to the second embodiment, there is no need to form the communication hole 61 as in the reference example and the first embodiment. It can be omitted and the strength can be secured.

In the reference example , if a plurality of communication holes 61 are formed around the through hole 59, the through hole 59 can be used even if a slight misalignment occurs between the base material 3 and the frame 15 during welding. Can be communicated with any one of the communication holes 61.

Further, in the reference example and the first and second embodiments, the planned fracture portion 11 is formed by the groove portion 9 formed on the back surface of the instrument panel main body 7. The part 11 may be formed.

Further, in the reference example and the first and second embodiments, the airbag door portion 13 is formed integrally with the instrument panel main body 7, but an opening is formed in the instrument panel main body 7, and the instrument panel main body is formed in the opening. 7 may be fitted into a panel member as another member, and the frame body 15 including the flap portion 25 may be fixed to the back surface of the panel member.

In addition, in the reference example and the first and second embodiments, the case where the interior panel is the instrument panel 1 and the case where the interior panel is the glove box 101 are illustrated in the third embodiment. It can also be applied to panels.

  The present invention can be applied to, for example, a vehicle interior panel such as an instrument panel having a skin adhered to the surface of a base material.

It is the A section enlarged view of FIG. It is sectional drawing in the II-II line of FIG. It is a top view of the frame in a reference example . It is a perspective view of the frame in a reference example . It is a perspective view of the front part of the passenger seat of the instrument panel concerning a reference example . FIG. 2 is a view corresponding to FIG. 1 of the first embodiment. It is a top view of the frame in FIG. FIG. 3 is a diagram corresponding to FIG. It is a top view of the frame in FIG. It is a cross-sectional view of the vehicle width direction one side end portion in the glove box according to the third embodiment. It is a disassembled perspective view which shows the state before attaching a lid outer panel to a glove box main body in the glove box which concerns on Embodiment 3 . FIG. 2 is a view corresponding to FIG.

1 Instrument panel (interior panel)
3 Substrate 5 Skin 15 Frame (Structure)
31 welding rib 31a communicating groove 59 through hole 61 hole (communication passage)
101 Glove box (interior panel)
103 base material 105 skin 115 glove box (structure)
131 welding rib 131a communication groove 159 through hole (communication path)
C1 clearance (communication path)

Claims (2)

An interior panel for a vehicle with a skin in which a skin is bonded to the base material surface and a resin structure is vibration welded to the back surface of the base material,
In the base material, a through-hole for discharging air to the back side of the base material from between the base material and the skin at the time of skin adhesion is formed,
One of the base material and the structure is formed with a grid-like welding rib that protrudes from the one and is vibration welded to the other, and the welding rib is provided with a communication path that communicates the through hole with the outside air. An interior panel for a vehicle with a skin, characterized by An interior panel for a vehicle with a skin in which a skin is bonded to the base material surface and a resin structure is vibration welded to the back surface of the base material,
In the base material, a through-hole for discharging air to the back side of the base material from between the base material and the skin at the time of skin adhesion is formed,
One of the base material and the structure is formed with a lattice-shaped welding rib protruding from the one and vibration-welded to the other, and the communication hole is surrounded by the welding rib corresponding to the through hole in the structure. Formed so as to be displaced with respect to the through-hole so as to open in a space adjacent to the formed space,
The welding rib surrounding the through hole and the communication hole is formed so that the communication groove communicates the space surrounded by the welding rib corresponding to the through hole and the communication hole and the adjacent space.
The interior panel for a vehicle with a skin, wherein the through hole communicates with outside air through a communication groove and a communication hole between the through hole and the communication hole.

Images