JP4801000B2 - Parts assembly structure of interior panel with duct - Google Patents

Description

  The present invention is an improvement of a part assembly structure of an interior panel with a duct in which a duct for leading air-conditioned air into a vehicle interior is arranged on the back side, such as an instrument panel installed in front of a driver's cab of an automobile. It is about.

  Patent Document 1 discloses an instrument panel in which a duct component is integrally joined to the back surface of an instrument panel main body by vibration welding to form a duct having a ventilation passage therebetween.

By the way, when the upper panel that constitutes the outer surface of the instrument panel is assembled to the surface of the instrument panel main body, the engagement claw protruding from the back surface of the upper panel is usually inserted into the engagement hole of the instrument panel main body. Is done.
JP 2007-38710 A (paragraph 0017 column, FIG. 1)

  However, when the upper panel is assembled to the instrument panel body by the engagement of the engagement claws as described above, if the engagement hole forming portion corresponds to the duct and the engagement hole penetrates the air passage, the air conditioning air Leaks from the engagement hole. In order to prevent this air leakage, a sealing material such as a urethane material is affixed around the engagement hole, but this takes time. When trying to set the engagement hole at a position away from the air passage of the duct, the duct is stretched over the entire back side of the instrument panel main body, so the position of the engagement hole formation is restricted, and the upper The panel cannot be stably assembled to the instrument panel body.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a ventilation passage without penetrating the engagement hole into the ventilation passage of the duct and attaching a sealing material around the engagement hole. This is to prevent air-conditioning air from leaking through.

  In order to achieve the above object, the present invention is characterized in that the structure around the engaging claw and the structure around the engaging hole are devised.

  Specifically, according to the present invention, a duct component is joined to the back surface of the interior panel body to form a duct having a ventilation passage therebetween, and an assembly part is engaged on the surface of the interior panel body. The following solution was taken for the part assembly structure of the interior panel assembled by inserting and engaging with the engagement hole of the interior panel body.

  That is, according to the first aspect of the present invention, the engagement protrusion of the assembly component is provided to protrude from a flat portion facing the engagement hole forming portion of the interior panel body, and the engagement hole of the interior panel body. Is formed so that an annular rib surrounds the engagement hole at a position where the engagement hole is formed, and the engagement rib is inserted into and engaged with the engagement hole. The tip of this is press-contacted to the flat part of the said assembly | attachment components over the perimeter.

  According to a second aspect of the present invention, in the first aspect of the present invention, a pedestal portion is provided on the back surface of the assembly part so as to project toward the engagement hole forming portion of the interior panel body, and the pedestal portion projects. The surface is a flat portion.

  According to the first aspect of the present invention, when the engaging claw of the assembly part is inserted and engaged with the engaging hole of the interior panel body, the tip of the annular rib formed in the engaging hole forming portion of the interior panel body is the above In order to press the entire surface of the assembly part where the engaging claws protrude, the air-conditioning air that has exited from the duct air passage through the engagement hole is blocked by the planar part and the annular rib. It can be prevented from leaking outside. Therefore, it is not necessary to perform a troublesome work of attaching a sealing material for preventing air leakage around the engagement hole. Furthermore, the position where the engagement hole is formed is not restricted, and the assembly component can be stably assembled to the interior panel body.

  According to the second aspect of the present invention, since the engaging claw protrudes from the projecting surface (planar portion) of the pedestal portion, the base end of the engaging claw forms an engagement hole by the projecting dimension of the pedestal portion. By approaching the location, the projecting dimension of the annular rib can be set lower by that amount to reduce the effects of dimensional changes due to thermal contraction, etc., and the annular rib is pressed against the projecting surface (planar part) of the pedestal part with high precision. Air leakage from the air can be reliably prevented.

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

(Embodiment 1)
1 and 5 show a resin vehicle instrument panel (interior panel) 1 to which a component assembly structure according to Embodiment 1 of the present invention is applied. The instrument panel 1 includes an instrument panel main body (interior panel main body) 3 as a main body, and a duct 5 for introducing conditioned air into the vehicle interior is formed on the back side of the instrument panel main body 3. . The duct 5 is formed by integrally joining a duct constituent member 7 made of a panel material to the back surface of the instrument panel main body 3 by vibration welding, and a ventilation passage between the instrument panel main body 3 and the duct constituent member 7. 9 is formed. In FIG. 1, 11 is a welding rib for vibration welding. Moreover, the ventilation path 9 shown in FIG. 1 is a side defroster air path.

  On the surface of the instrument panel main body 3, assembly parts such as a center panel 13 constituting the outer surface of the instrument panel 1, upper panels 15 and lower panels 17 on both right and left sides thereof are assembled. The center panel 13 has an opening 19 for attaching devices such as audio equipment, and a center vent air outlet 21 is formed to communicate with a center vent air passage (not shown). Yes.

  A double door airbag 23 and a side defroster air outlet 25 are formed in the right upper panel 15. A meter hood 27 and a side defroster air outlet 25 are formed in the left upper panel 15. These side defroster air outlets 25 communicate with the blower passage (side defroster air passage) 9.

  A glove box 29 is assembled to the right lower panel 17, and a side vent air outlet 31 is formed to communicate with a side vent air passage (not shown). The left lower panel 17 is formed with an opening 33 for attaching meter devices and an opening 35 for attaching a steering device, and a side vent air passage 31 (not shown). ). In FIG. 5, 37 is a front defroster air outlet formed in the front edge of the instrument panel body 3 and extending in the vehicle width direction. The front defroster air outlet 37 is connected to a front defroster air passage (not shown). Communicate.

  The conditioned air adjusted by an air conditioning unit (not shown) is passed through the front defroster air passage, the side defroster air passage (blower passage 9), the center vent air passage and the side vent air passage, and the front defroster air outlet 37 and side defroster air. From the blower outlet 25, the side vent air blower outlet 31, and the center vent air blower outlet 21, it blows off into the vehicle interior. The instrument panel main body 3 has an opening 39 for mounting an airbag device corresponding to the airbag door 23 (see FIG. 4).

  The method of assembling the center panel 13, the upper panel 15, and the lower panel 17 to the instrument panel body 3 is the same. In other words, the clip protruding from the back surface of the assembly component such as the center panel 13 is inserted into and engaged with the engagement hole formed in the instrument panel body 3. It is characterized by the assembly structure of the corresponding part. Hereinafter, the upper panel 15 will be described as a representative, and other assembly parts will be omitted.

  As shown in FIG. 3 and FIG. 4, rectangular engagement holes 41 are formed at predetermined intervals at locations corresponding to the duct 5 of the instrument panel main body 3, penetrate the air passage 9 and engage with each other. A rectangular annular rib 45 is formed at the hole forming portion 43 so as to surround the engaging hole 41. This is one of the features of the present invention. Note that the annular rib 45 is not formed in the engagement hole forming portion 43 located away from the duct 5 because there is no need to prevent air leakage (see the right end in FIG. 4).

  On the other hand, on the back surface of the outer periphery of the upper panel 15, as shown in FIG. 2, a pedestal 47 is integrally projected toward the engagement hole forming portion 43 of the instrument panel main body 3. This is also one of the features of the present invention. The pedestal portion 47 includes two triangular vertical surface portions 47a protruding in parallel from the back surface of the upper panel 15, and a protruding surface 47b that bridges the protruding ends of the two vertical surface portions 47a. A flat portion facing the engagement hole forming portion 43 of the instrument panel body 3 is used. Hereinafter, when it is referred to as a plane portion, the same reference numeral as that of the projecting surface 47b is given.

  An engaging claw 49 projects from the flat portion 47b. The engaging claw 49 includes a mounting plate portion 51 having a substantially H-shaped cross section integrally projecting from the flat surface portion 47 b and a resin clip 53 attached to the mounting plate portion 51. . The mounting plate portion 51 includes two vertical plate portions 51a projecting in parallel from the flat surface portion 47b, and a horizontal plate portion 51b bridging between the vertical plate portions 51a, and the both vertical plate portions 51a. A narrow width portion 51c that becomes narrower as it goes to the front end is formed at the front end of the horizontal plate portion, and a rectangular attachment hole 51d is formed in the horizontal plate portion 51b.

  On the other hand, the clip 53 includes a pair of engaging piece portions 53a branched from the tip into a fork, and a pair of claw portions 53b integrally formed inside the engaging piece portions 53a. By engaging 53b with the mounting hole 51d of the mounting plate portion 51 (lateral plate portion 51b) from both sides, the clip 53 is attached to the mounting plate portion 51 to form an engaging claw 49, and the engaging claw 49 is formed. Is attached to the base 47.

  Then, the upper panel 15 is pressed against the instrument panel main body 3 from the front side and inserted into the engagement hole 41 of the instrument panel main body 3 while bending the clip 53 (engagement piece 53a) of the engagement claw 49 in this process. Engage. At this time, since the narrow width portions 51c are formed at the tips of the two vertical plate portions 51a of the mounting plate portion 51, the vertical plate portions 51a can be smoothly engaged without interfering with the outer periphery of the engagement hole 41. It can be guided to be inserted into the joint hole 41. In this inserted engagement state, the tip of the annular rib 45 around the engagement hole 41 is in pressure contact with the flat surface portion 47b of the pedestal portion 47 of the upper panel 15 over the entire circumference, and the two vertical plate portions 51a are The end contacts the inner peripheral edge of the engagement hole 41, whereby the upper panel 15 is assembled to the surface of the instrument panel main body 3.

  As described above, in the first embodiment, the annular rib around the engagement hole 41 in the state where the engagement claw 49 (clip 53) of the upper panel 15 is inserted and engaged with the engagement hole 41 of the instrument panel main body 3. Since the front end of 45 is in pressure contact with the flat portion 47b of the pedestal portion 47 of the upper panel 15 over the entire circumference, the conditioned air that has exited from the air passage 9 of the duct 5 through the engagement hole 41 is supplied to the flat portion 47b. And the annular rib 45 so that it does not leak outside. Therefore, it is not necessary to perform a troublesome work of attaching a sealing material for preventing air leakage around the engagement hole 41. Furthermore, the position of the engagement hole forming portion 43 is not restricted, and the upper panel 15 can be stably assembled to the instrument panel body 3.

  Further, in the first embodiment, the engaging claw 49 (clip 53) of the upper panel 15 is provided on the protruding surface (planar portion) 47a of the pedestal portion 47 of the upper panel 15, so that only the protruding dimension of the pedestal portion 47 is provided. The base end of the engagement claw 49 approaches the engagement hole forming portion 43, and the projection dimension of the annular rib 45 is set lower by that amount to reduce the influence of dimensional change due to heat shrinkage. It is possible to reliably prevent air leakage from the air passage 9 by accurately pressing against the protruding surface (planar portion) 47b of the portion 47.

  Further, in the first embodiment, since the base ends of the vertical plate portions 51a are in contact with the inner peripheral edge of the engagement hole 41 in the insertion engagement state, the engagement claw 49 does not move in the engagement hole 41. The upper panel 15 can be assembled to the instrument panel body 3 without rattling.

(Embodiment 2)
6 and 7 show the second embodiment, FIG. 6 is a diagram corresponding to FIG. 1, and FIG. 7 is a diagram corresponding to FIG. In the second embodiment, the structure of the engaging claw is the same as that of the first embodiment except that the structure of the engaging claw is different from that of the first embodiment. Therefore, only the different points are described here, and the same reference numerals are given to the same components. Detailed description thereof will be omitted.

  That is, the engaging claw 49 employed in the first embodiment is configured separately from the mounting plate portion 51 and the clip 53, but the engaging claw 55 employed in the second embodiment is a single body. That is, the engaging claw 55 of the second embodiment includes two vertical plate portions 55a that protrude in parallel from the flat surface portion 47b of the pedestal portion 47, and tapered taper portions 55b are formed at the ends of the vertical plate portions 55a. ing. In addition, a flexible horizontal plate portion 55c is integrally formed at the ends of the vertical plate portions 55a, and a U-shape is formed between the flexible horizontal plate portion 55c and the vertical plate portions 55a. A slit 55d is formed, and a claw portion 55e is integrally formed on one surface (lower surface in the drawing) of the flexible horizontal plate portion 55c so as to have a substantially H-shaped cross section as a whole.

  Then, the upper panel 15 is pressed against the instrument panel main body 3 from the front side, and in this process, the claw portion 55e is bent into the engagement hole 41 of the instrument panel main body 3 while the flexible horizontal plate portion 55c of the engagement claw 55 is bent. Is inserted and engaged. At this time, since the tapered portion 55b is formed at the tip of the two vertical plate portions 55a, both the vertical plate portions 55a can be smoothly inserted into the engagement hole 41 without interfering with the outer periphery of the engagement hole 41. I can guide you. In this inserted engagement state, the tip of the annular rib 45 around the engagement hole 41 is in pressure contact with the flat portion 47b of the pedestal portion 47 of the upper panel 15 over the entire circumference, and the both vertical plate portions 55a The end contacts the inner peripheral edge of the engagement hole 41, whereby the upper panel 15 is assembled to the surface of the instrument panel main body 3.

  Therefore, in the second embodiment, the same operational effects as in the first embodiment can be obtained, and the engagement claw 55 is a single body, and therefore, compared with the separate engagement claw 49 employed in the first embodiment. In addition to being able to be manufactured at low cost, the labor of attaching the clip 53 to the attachment plate portion 51 can be saved.

  In both of the above embodiments, the annular rib 45 is provided on the instrument panel body 3 side where the engagement holes 41 are provided, and the corresponding flat portion 47b is provided on the upper panel 15 side where the engagement claws 49 and 55 are projected. In other words, when the annular rib 45 is provided on the flat surface portion 47b, the engagement claws 49 and 55 are provided with undercut portions (the mounting holes 51d of the mounting plate portion 51 in the first embodiment, the claw portions 53e and the slits in the second embodiment). This is to avoid the slide mold necessary to form the portion 55d) because it has a complicated structure in order to avoid interference with the annular rib 45.

  Moreover, in both the said embodiment, although the duct 5 showed the example applied to the ventilation path (side defroster air path) 9 which ventilates warm air, you may apply to the side vent air path which ventilates cool air, In this case, since the projecting surface of the pedestal portion 47 is the flat surface portion 47b, the flat surface portion 47b that blocks the cool air in the duct 5 is located away from the surface of the upper panel 15. The effect of preventing partial condensation on the surface of the upper panel 15 is specially obtained.

  Furthermore, in both of the above-described embodiments, the component assembly structure of the interior panel with duct is applied to the case where the upper panel 15 is assembled to the vehicle instrument panel 1, but other panel components may be used. It can also be applied to interior panels with ducts.

  INDUSTRIAL APPLICABILITY The present invention is useful for a part assembly structure of an interior panel with a duct in which a duct for leading air-conditioned air into a vehicle interior is arranged on the back side, such as an instrument panel installed in front of a cab of an automobile. It is.

It is sectional drawing in the II line | wire of FIG. It is the perspective view which looked at the engaging claw formation location of the upper panel from the back side. It is the perspective view which looked at the engagement hole formation location of the instrument panel main body from the front side. It is a perspective view of the instrument panel main body before assembling an upper panel. 1 is a perspective view of an instrument panel to which a component assembly structure according to Embodiment 1 is applied. FIG. 3 is a diagram corresponding to FIG. FIG. 3 is a diagram corresponding to FIG. 2 of the second embodiment.

Explanation of symbols

1 Instrument panel (interior panel)
3 Instrument panel body (interior panel body)
5 Duct 7 Duct component 9 Air passage 15 Upper panel (assembled parts)
41 Engagement hole 43 Engagement hole formation location 45 Annular rib 47 Base part 47b Plane part (protruding surface)
49,55 engaging claw

Claims (2)

A duct component is joined to the back surface of the interior panel body to form a duct having a ventilation passage therebetween, and an assembly part is inserted into the engagement hole of the interior panel body on the surface of the interior panel body. It is a part assembly structure of an interior panel assembled by engagement,
The engaging claw of the assembly part is provided so as to protrude from a flat portion facing the engaging hole forming portion of the interior panel body,
An engagement hole of the interior panel body penetrates the air passage, and an annular rib is formed at an engagement hole forming portion so as to surround the engagement hole,
A component for an interior panel with a duct, wherein the end of the annular rib is in pressure contact with the flat portion of the assembly component in a state where the engagement claw is inserted and engaged with the engagement hole. Assembly structure. In the component assembly structure of the interior panel with duct according to claim 1,
A component assembly of an interior panel with a duct, characterized in that a pedestal portion projects from the back surface of the assembly component toward an engagement hole forming portion of the interior panel body, and the projecting surface of the pedestal portion is a flat portion. Attached structure.

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