JP2006256566A - Vehicular door trim - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular door trim which is high in waterproofness in a cabin, and easily manufactured. <P>SOLUTION: A door trim 3 of a vehicular door 1 is formed by mounting a holding panel 5 on a trim board 4. The holding panel 5 is formed by interposing a harness assembly 7 between a waterproof sheet 6 and a sound absorbing material 8, and pressing the waterproof sheet 6 and the sound absorbing material 8 by a heating press PR after coating adhesive on the waterproof sheet 6. Thereafter, the holding panel 5 is placed on the trim board 4 so that the sound absorbing material 8 is abutted on a tip of a rib 45 erected annularly on the trim board 4 on the outer side of a cabin. At least one of the waterproof sheet 6, the sound absorbing material 8 and the rib 45 is melted to form a melted part to seal the inside of the annularly erected rib 45. The melted part to seal the inside of the annularly erected rib 45 surrounds the inside of the rib 45 to prevent water entry into a cabin from the outside of the cabin. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle door trim facing a vehicle interior.

  As a conventional technology related to vehicle doors, cover an intermediate panel containing a wire harness with a cover film coated with an adhesive, and evacuate the intermediate panel to join the film to the intermediate panel. There was one in which a door trim was attached from above after being sandwiched and attached to a door panel having a large opening at the center (see, for example, Patent Document 1). Since the opening is provided in the central portion of the door panel formed of a metal plate, this greatly contributes to reducing the weight of the vehicle door and facilitates the mounting work of door mounting components such as a window regulator.

  By the way, normally, the door trim is formed with a plurality of mounting holes for mounting door equipment such as vehicle interior speakers, and water that has entered the vehicle door from the outside of the vehicle enters the vehicle interior through the mounting holes. It is necessary to prevent that. According to the above-described prior art, since the cover film is waterproof, it is possible to prevent water from entering the vehicle compartment to some extent through the opening of the door panel. However, if it is intended to completely prevent water from entering the door trim side, a special waterproof means is required when attaching the intermediate panel to which the film is bonded to the door panel.

In the above-described prior art, the waterproof performance of the intermediate panel can be inspected only after being attached to the door panel, and cannot be performed unless the vehicle door assembling process is completed. Therefore, when a malfunction is found in the waterproof property at the time of completion of the door, it has to be repaired after being disassembled again. Furthermore, the prior art requires a large apparatus for evacuating the cover film, which requires a lot of space and high costs in the manufacturing process.
JP-A-9-39680 (FIG. 5)

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a vehicle door trim that is highly waterproof to the passenger compartment and that is easy to manufacture.

  As a means for achieving the above-mentioned object, the invention of claim 1 is a vehicle door trim that includes a trim board facing a vehicle interior and is attached to a door panel, and includes a waterproof sheet and a plate-like member that are overlapped with each other. In the meantime, while forming a holding panel with a wire harness interposed therebetween, an attachment portion is erected in an annular shape outside the cabin of the trim board, so that the plate-like member abuts against the attachment portion, After the holding panel is disposed on the trim board, the welded portion that seals the inside of the annular mounting portion, in which at least one of the plate-shaped member, the mounting portion, and the waterproof sheet is melted The vehicle door trim is characterized in that the holding panel is fixed to the trim board.

  The invention according to claim 2 is the vehicle door trim according to claim 1, wherein the plate-like member is a sound absorbing material formed of a felt material.

  The invention according to claim 3 is the vehicle door trim according to claim 2, wherein the waterproof sheet and the sound absorbing material are joined to each other by an adhesive.

<Invention of Claim 1>
A holding panel is formed between the tarpaulins and plate-like members stacked on top of each other with a wire harness interposed, and a mounting portion is erected in an annular shape outside the cabin of the trim board. An inner side of the annular mounting portion in which at least one of the plate-shaped member, the mounting portion, and the waterproof sheet is melted after the holding panel is arranged on the trim board so that the plate-shaped member contacts the inner surface. By fixing the holding panel to the trim board with the welded part that seals the battery, it is possible to completely waterproof between the mounting part and the waterproof sheet with a simple and low-cost method, and the holding panel is specially waterproof. Without being attached to the door panel by a highly reliable method, it is possible to prevent water from entering the vehicle interior through the attachment hole formed in the trim board. In addition, since the door trim can be provided with a waterproof function, the waterproof performance of the door trim can be inspected and corrected before being attached to the door panel. Furthermore, since the vehicle door can be completed by assembling only the two members of the door panel and the door trim, it is possible to reduce the labor of carrying the parts into the assembling process and reduce the space for storing the parts.

<Invention of Claim 2>
Since the plate-like member is a sound-absorbing material formed of a felt material, it is possible to reduce the propagation of noise into the vehicle compartment while holding the wire harness. Further, since the sound absorbing material is formed of a felt material, its contour shape can be easily cut and can be easily applied to various types of vehicle doors having different sizes and shapes.

<Invention of Claim 3>
Since the waterproof sheet and the sound absorbing material are bonded to each other by an adhesive, it is possible to prevent the waterproof sheet and the sound absorbing material from separating before attaching the holding panel to the trim board, and to facilitate the installation work. . Further, since there is no need to weld the waterproof sheet and the sound absorbing material, it is not necessary to form the waterproof sheet with a thermoplastic material, and a wide range of materials can be applied.

  An embodiment of the present invention will be described with reference to FIGS. In the description, the lower left in FIG. 1 is the front of the vehicle, and the lower right is the vehicle interior. As shown in FIG. 1, the vehicle door trim 3 according to the present embodiment constitutes a vehicle door 1 together with a door panel 2. The door panel 2 is formed of a steel plate, a window sash 22 in which a window glass 21 is fitted so as to be movable up and down, an outer panel 23 connected below the window sash 22, and an inner panel 24 ( 2). As shown in FIG. 2, the inner panel 24 has a large opening, leaving a peripheral edge, for weight reduction and workability of attaching functional parts.

  In addition, a pair of impact beams 25a and 25b are attached to the inner panel 24 so as to be lined up and down in order to protect passengers from side collisions. Motor actuators 26a and 26b of a window regulator (not shown) for moving the window glass 21 up and down are fixed to the impact beam 25b positioned below via brackets 27a and 27b. The motor actuators 26 a and 26 b are fixed to the door panel 2 by connecting the lower ends of the brackets 27 a and 27 b to the lower side of the inner panel 24.

  As shown in FIG. 3, the door trim 3 includes a trim board 4 facing the vehicle interior and a holding panel 5 (shown in FIG. 4) attached thereto. The trim board 4 is integrally formed of a thermoplastic resin material such as polypropylene, and a handle hole 41 in which a door opening / closing handle is disposed is formed on the trim board 4. Further, an armrest 42 on which the driver's arm is placed protrudes from the surface on the vehicle interior side, and a speaker hole 43 for sound generation of an acoustic speaker 44 (shown in FIGS. 1 and 2) is provided at the lower front portion. Is provided. Further, a rib 45 (corresponding to the mounting portion of the present invention) is erected on the outer surface of the trim board 4 so as to extend outward from the passenger compartment. The rib 45 includes the handle hole 41 and the speaker hole 43, is provided in an annular shape so as to surround the interior of the trim board 4, and is integrally formed with the trim board 4.

  The holding panel 5 includes a waterproof sheet 6 and a sound absorbing material 8 (corresponding to the plate-like member of the present invention) stacked on top of each other, and a harness assembly 7 (corresponding to the wire harness of the present invention) between the two. Is included. The waterproof sheet 6 is formed in a thin plate shape or a film shape that can be bent by a thermoplastic resin such as polyethylene or polypropylene that does not allow water to permeate, and water that enters the vehicle door 1 from outside the vehicle compartment enters the vehicle interior. Preventing intrusion. The outer shape of the waterproof sheet 6 is similar to the path of the rib 45 of the trim board 4 described above, and has a contour larger than the rib 45 by a predetermined amount. The waterproof sheet 6 is formed with a plurality of slit-shaped harness holes 61 (to be described later) through which the harness assembly 7 passes.

  On the other hand, the sound absorbing material 8 is formed in a flat plate shape thicker than the waterproof sheet 6 by a flexible felt material containing a thermoplastic resin material, and the outer shape of the sound absorbing material 8 is a rib 45 with respect to the path of the rib 45 of the trim board 4. The outline is larger by a predetermined amount. A housing hole 81 for the acoustic speaker 44 passes through the sound absorbing material 8 at a position corresponding to the speaker hole 43 of the trim board 4 described above. The sound absorbing material 8 is provided in order to prevent noise from outside the vehicle compartment from propagating through the vehicle door 1 into the vehicle interior. The harness assembly 7 is formed by connecting a plurality of electric wires 71 according to a known technique and a connector 72 according to the known technique to each end portion thereof. The harness assembly 7 is connected to electrical wiring of functional components installed on the vehicle door 1 such as the motor actuators 26a and 26b or the acoustic speaker 44 described above via the connector 72, and supplies power to these components. The electric signals are exchanged between these and the vehicle.

  Next, a method for assembling the holding panel 5 will be described with reference to FIGS. As shown in FIG. 5, the sound absorbing material 8 is first placed on the pedestal DZ. At the same time, an adhesive 62 formed of a thermoplastic resin material is applied to the entire bottom surface of the waterproof sheet 6, and then the harness hole 61 of the waterproof sheet 6 is expanded and the harness assembly 7 is inserted from the connector 72. Go outside the 6th car compartment. Following the connector 72, a predetermined amount of electric wires 71 are inserted into the harness holes 61, and all the electric wires 71 are arranged so as to contact the lower surface of the waterproof sheet 6 without sagging. In this state, since the adhesive 62 is at room temperature, it is not melted and no adhesive force is generated.

  Thereafter, as shown in FIG. 6, the waterproof sheet 6 including the harness assembly 7 is overlaid on the upper surface of the sound absorbing material 8 so that the outer edge portion thereof coincides with the outer edge of the sound absorbing material 8. At this time, wrinkles are not generated in the waterproof sheet 6. After all the connectors 72 are arranged outside the outer edge of the waterproof sheet 6, the press PR heated at a predetermined temperature is lowered and pressed while heating the waterproof sheet 6 and the sound absorbing material 8 between the base DZ. To do. At this time, as described above, since the connector 72 is located outside the outer edge of the waterproof sheet 6, it does not hinder the pressing by the heating press PR. The adhesive 62 applied to the waterproof sheet 6 is heated by the press PR to melt and generate an adhesive force, and adheres the pressed waterproof sheet 6 to the sound absorbing material 8. Thereafter, a vinyl waterproof tape (not shown) is stuck on the harness hole 61 on the outer surface of the waterproof sheet 6 in order to close the harness hole 61 through which the electric wire 71 passes for waterproofing. . Thus, the harness assembly 7 is interposed therebetween, and the holding panel 5 in which the waterproof sheet 6 and the sound absorbing material 8 are joined is completed (shown in FIG. 4).

  Next, a method for fixing the holding panel 5 to the trim board 4 and completing the door trim 3 will be described with reference to FIGS. 7 and 8. The holding panel 5 is placed on the trim board 4 placed with the outer surface of the vehicle compartment facing upward so that the sound absorbing material 8 faces downward (shown in FIG. 7). At this time, the lower surface of the sound absorbing material 8 is in contact with the tip of the rib 45 of the trim board 4. After moving all the connectors 72 and the electric wires 71 of the harness assembly 7 to the inside of the holding panel 5 so as not to be positioned on the ribs 45, the horn HN for ultrasonic welding is lowered and waterproofed. The sheet 6 is pressed from the upper surface toward the rib 45 (shown in FIG. 8). As shown in FIG. 7, the height of the rib 45 is different depending on each part due to the unevenness of the surface of the trim board 4, but it can follow the unevenness of the rib 45 by bending the sound absorbing material 8. There is no problem in the mounting of the holding panel 5 and its waterproofness (shown in FIG. 8).

  The ultrasonic horn HN is integrally formed of aluminum or the like, and applies ultrasonic vibrations in the vertical direction while pressing the waterproof sheet 6 downward, and the waterproof sheet 6 is melted by the heat generated thereby. Also, the ultrasonic horn HN applies ultrasonic vibrations to the sound absorbing material 8 and the rib 45 to generate heat, and the sound absorbing material 8 and the rib 45 are also melted. As a result, the waterproof sheet 6, the sound absorbing material 8 and the rib 45 are melted and mixed in the sound absorbing material 8, and then cured by being cooled. As shown in an enlarged view in FIG. A welded portion ME that seals the inside is formed, and the holding panel 5 is fixed to the trim board 4. Note that the waterproof sheet 6, the sound absorbing material 8, and the ribs 45 do not necessarily have to be melted, and at least one of them is melted to form the welded portion ME that seals the inside of the annular rib 45. That's fine. Moreover, in this embodiment, since the waterproof sheet 6 and the sound absorbing material 8 are joined with an adhesive, it is not always necessary to weld each other, and at least the waterproof sheet 6 is a non-thermoplastic material. For example, it can be formed of a urethane resin or the like.

  As described above, the waterproof panel 6 and the rib 45 are ultrasonically welded over the entire circumference of the rib 45 by the ultrasonic horn HN, whereby the holding panel 5 is fixed to the trim board 4. The welded portion ME that seals the annular rib 45 is formed by melting at least one of the waterproof sheet 6, the sound absorbing material 8, and the rib 45 while pressing the waterproof sheet 6 and the sound absorbing material 8 against the rib 45. Since the sheet 6 and the rib 45 have a coupling portion without a gap and surround the inside of the rib 45, the passage of water to the inside of the rib 45 through the rib 45 and the welded portion ME is blocked. Can do. As a result, the weld ME that seals the inside of the annular rib 45 together with the waterproof sheet 6, the water that has entered the vehicle door 1 from the outside of the vehicle compartment (the door panel 2 side), such as the handle hole 41, the speaker hole 43, etc. It is possible to prevent the vehicle from entering the vehicle compartment through the mounting hole formed in the trim board 4. The door trim 3 thus completed is attached to the door panel 2 by a method similar to the conventional method using a resin clip or the like.

  According to this embodiment, after the harness assembly 7 is interposed between the waterproof sheet 6 and the sound absorbing material 8 that are overlapped with each other, the waterproof sheet 6 is joined to the sound absorbing material 8 to form the holding panel 5. At the same time, a rib 45 is provided in an annular shape outside the passenger compartment of the trim board 4, and the holding panel 5 is disposed on the trim board 4 so that the sound absorbing material 8 comes into contact with the rib 45. By melting at least one of the sound absorbing material 8 and the rib 45 to form a welded portion ME that seals the inside of the annular rib 45, the holding panel 5 is fixed to the trim board 4. The rib 45 and the waterproof sheet 6 can be completely waterproofed by a simple method, and the holding panel 5 can be attached to the door panel 2 by a special waterproof method as before, without attaching the trim board 4 to the door panel 2. Shape inside By the handle holes 41, through the speaker holes 43 or the like, it is possible to prevent the water into the vehicle compartment from entering. In addition, since the door trim 3 can be provided with a waterproof function alone, the waterproof performance of the door trim 3 can be inspected and corrected before being attached to the door panel 2.

  Further, the vehicle door 1 can be completed by assembling the trim board 4 and the holding panel 5 to form the door trim 3 in advance, and assembling only the two members of the door panel 2 and the door trim 3. It is possible to reduce the labor of carrying parts into the process and reduce the space for storing parts. Further, the door trim 3 includes the sound absorbing material 8 formed of a felt material, so that it is possible to hold the harness assembly 7 and reduce the propagation of noise into the vehicle interior. Further, since the sound absorbing material 8 is formed of a felt material, its contour shape can be easily cut and can be easily applied to various types of vehicle doors having different sizes and shapes.

  Further, before attaching the holding panel 5 to the trim board 4, the waterproof sheet 6 and the sound absorbing material 8 are joined with an adhesive, thereby preventing the two from being separated, and attaching the holding panel 5 to the trim board 4. It can be made easier. Moreover, since it is not necessary to melt the waterproof sheet 6 and join the waterproof sheet 6 and the sound absorbing material 8, it is not necessary to form the waterproof sheet 6 from a thermoplastic material, and a wide range of materials can be applied. Further, when the waterproof sheet 6 and the sound absorbing material 8 are joined, since the adhesive 62 formed of a thermoplastic resin material is used, the adhesive 62 does not generate adhesive force before joining. It is possible to prevent the waterproof sheet 6 from being erroneously adhered to other members and facilitate the joining operation.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The sound absorbing material is formed of a solid material such as a synthetic resin that does not absorb water, and a harness assembly is interposed between the waterproof sheet and the sound absorbing material, and then the holding panel is overlapped with each other. Form and melt the sound absorbing material or rib and waterproof sheet to weld the contact surface between the sound absorbing material and rib, and weld the contact surface between the waterproof sheet and sound absorbing material to trim the holding panel It may be fixed to.
(2) When welding between the waterproof sheet, the sound absorbing material, and the rib, the welding may be performed by hot air welding, high frequency welding, or the like without using ultrasonic welding.
(3) The adhesive for joining the waterproof sheet and the sound absorbing material may not be formed of a thermoplastic material, and a reactive adhesive or the like may be used.
(4) When joining the waterproof sheet and the sound absorbing material, the adhesive may be applied to the sound absorbing material side, or may be applied to both the waterproof sheet and the sound absorbing material. Further, the adhesive may be formed into a plate shape or a film shape, and may be bonded to each other after being superimposed on a waterproof sheet or a sound absorbing material.
(5) For the plate-like member in the present invention, not only a soft material but also a hard material can be used.

It is a perspective view of the vehicle door by this embodiment. It is a perspective view when a door trim is removed from the vehicle door shown in FIG. FIG. 3 is a perspective view when the door trim is further disassembled in the vehicle door shown in FIG. 2. It is a perspective view of the holding panel of the vehicle door shown in FIG. It is process drawing which showed the state before joining a waterproof sheet to a sound-absorbing material. It is process drawing which showed the place which presses a waterproof sheet with a heat press, in order to join a waterproof sheet to a sound-absorbing material. It is process drawing which showed the state before attaching a holding panel to a trim board. It is process drawing which showed the place which has welded the waterproof sheet and the trim board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle door 2 ... Door panel 3 ... Door trim 4 ... Trim board 5 ... Holding panel 6 ... Waterproof sheet 7 ... Harness assembly 8 ... Sound absorbing material 45 ... Rib 62 ... Adhesive ME ... Welding part

Claims (3)

In the vehicle door trim that has a trim board facing the vehicle interior and is attached to the door panel,
A holding panel is formed between the waterproof sheet and the plate-like member, which are overlapped with each other, with a wire harness interposed therebetween, and a mounting portion is erected in an annular shape outside the cabin of the trim board. After the holding panel is disposed on the trim board so that the plate-like member comes into contact with the plate-like member, at least one of the plate-like member, the attachment portion, and the waterproof sheet is melted, A vehicle door trim characterized in that the holding panel is fixed to the trim board by a welded portion that seals the inside of an annular mounting portion. The vehicle door trim according to claim 1, wherein the plate-like member is a sound absorbing material formed of a felt material. The vehicle door trim according to claim 2, wherein the waterproof sheet and the sound absorbing material are joined to each other by an adhesive.

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