JPH11321500A - Trim structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize a shock energy given to a trim and also support a shock energy absorption body easily even if the trim has a divided portion. SOLUTION: In this trim structure, the end 5a of the other trim main body 3 with a material different from oneside trim main body 2 is combined in the piling state with the end 2a of oneside trim main body consisting of synthetic resin and a first shock energy absorption body 6 installed on the back surface 5b of the other trim main body 3 is extended upto the back surface 2b of oneside trim main body 2. Further, the extended part 8 is supported by the boss 10 formed on the back surface 2b of oneside trim main body 2 and a second shock energy absorption body 12 installed on the back surface 2b of oneside trim main body 2 is extended in the piling state with the extended part 8 of the first shock energy absorption body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile trim structure.

[0002]

2. Description of the Related Art A trim for an automobile is attached to a panel surface of a vehicle body such as a door, and a bulging portion is formed at an armrest portion or a waistline portion of the trim so that the bulging portion and the vehicle body are formed. There is an example in which an impact energy absorber is disposed between the panel and the panel surface (for a similar technique, see Japanese Utility Model Application Laid-Open No. 6-25015 or Japanese Patent Application Laid-Open No. 10-16564).

In such an occupant protection structure, when a vehicle body such as a door is moved to the indoor side at the time of a side collision or an occupant is moved to the outside of the vehicle for some reason, the occupant protection structure is attached to a panel surface of the vehicle body such as a door. The impact energy absorber is provided in advance, assuming that the installed trim and the occupant will collide.

[0004]

However, according to this structure, since the outside of the impact energy absorber disposed on the rear surface of the trim is a panel surface of a hard body or the like, the impact energy is high. Therefore, it is necessary to increase the thickness of the impact energy absorber, and there is a limit to the thickness in a narrow space. Further, when the trim is divided into at least two parts so as to be able to cope with a change in specification or the like, there may be a case where improvement is required with respect to a position where the support means of the impact energy absorber is provided.

The present invention has been made by paying attention to such a conventional technique, and it is possible to minimize the impact energy applied to the trim, and even if the trim has a divided portion, it can be easily manufactured. An object of the present invention is to provide a trim structure for a vehicle which can support an impact energy absorber.

[0006]

According to a first aspect of the present invention, an end of one trim main body made of a synthetic resin material is overlapped with an end of the other trim main body having a different material from that of the one trim main body. A trim structure for an automobile, which is joined in a state of being joined, wherein a first impact energy absorber disposed on the back surface of the other trim body is extended to the back surface of one trim body, and the one trim is provided. The extension portion is supported by a boss formed on the back surface of the main body, and the second impact energy absorber disposed on the back surface of the one trim main body is overlapped with the extension portion of the first impact energy absorber. It is characterized by being extended so as to be in a state of being joined.

According to a second aspect of the present invention, there is provided an automobile trim structure according to the first aspect, wherein the one trim main body is made of a thermoplastic resin, and the other trim main body is formed of a thermoplastic resin.
It is characterized by being made of wood core material.

According to a third aspect of the present invention, there is provided a vehicle trim structure according to the first or second aspect, wherein
The impact energy absorber is made of rigid urethane foam, the second impact energy absorber is made of foamed polypropylene, and the first impact energy absorber is deformed and moved by the second impact energy absorber.
It is characterized in that the impact energy absorber has a relationship that can be prevented.

According to a fourth aspect of the present invention, a wood core material having a material different from that of the one trim main body is provided at an end of one trim main body made of a thermoplastic resin material whose boss-shaped protruding portion can be easily formed. A trim structure for an automobile in which ends of the other trim main bodies are joined together in an overlapped state, and a boss is integrally provided on a back surface near an end of the overlapped portion of one trim main body. The impact energy absorber formed and arranged on the back surface of the other trim body is extended to the back surface of one trim body, and the extending portion is formed by a boss formed on the back surface of one trim body. It is characterized by being supported.

According to a fifth aspect of the present invention, there is provided the trim structure for an automobile according to the second or fourth aspect, wherein an end of the other trim main body near an overlapping portion is provided for an armrest portion. While being formed as a bulge, the impact energy absorber is arranged in the bulge, and the one trim main body is overlapped below the bulge of the other trim main body to form the boss. Is located on the back surface of the lower surface of the bulging portion for the armrest portion.

[0011]

According to the first aspect of the present invention, even if an impact is applied from the second impact energy absorber side or from the trim main body side, the overlapping first and second impact energy absorbers cooperate. As a result, the impact energy applied to the trim can be minimized. Further, since there is an overlapped portion between the first impact energy absorber and the second impact energy absorber, a discontinuous portion of the reaction force characteristic is not formed.

According to the second aspect of the present invention, the boss portion can be formed together with one of the trim main bodies which is easy to form, and the boss portion holds the first impact energy absorber. Therefore, the holding means is inexpensive.

According to the third aspect of the present invention, the second impact energy absorber can prevent the first impact energy absorber from moving toward the second impact energy absorber.

According to the fourth aspect of the present invention, the boss portion is formed on one of the trim main bodies formed of a thermoplastic resin material which can be easily formed, and the other is formed of a wood core material. It is necessary to set the supporting boss using various means on the other trim main body where it is difficult to establish a boss-shaped projection because the impact energy absorber arranged on the back of the trim main body is supported And can be manufactured at low cost and easily.

According to the fifth aspect of the present invention, the position where the overlapping portion and the boss portion are established is out of the field of view of the occupant in the normal seating position, so that the overlapping portion becomes inconspicuous and the boss portion on the back surface. Even if "sink" is formed on the surface side due to the formation of, it is not noticeable. Further, since the boss portion is provided on the back surface of the lower surface of the bulging portion, it is possible to sufficiently utilize the impact energy absorption allowance in the bulging portion.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a door trim, which is a "trim" of the present invention, and a lower trim (one trim main body) 2, which is vertically divided by an armrest portion 5 bulging toward the vehicle interior IR at a vertical center position,
Upper trim (the other trim main body) 3. FR in FIGS. 1, 3 and 4 is the front side of the car,
RR also indicates the direction of the rear side.

The lower trim 2 is made of a thermoplastic resin material such as polypropylene (PPC) with a filler. The upper trim 3 is composed of a wood core material (a material obtained by mixing wood powder (chips) with a thermoplastic resin and hardened) made of a different material from the lower trim 2 and a polyvinyl chloride skin 5d. A skin cloth 4 is provided on the surface of the upper trim 3, and the skin cloth 4 is cut into a closed loop-shaped groove 6 and supported by bonding.

At the lower end 3a, which is the "end" of the upper trim 3, the armrest 5 is formed so as to bulge, and the side 5a of the side 5a which is obliquely suspended from the armrest 5 on the OS side outside the vehicle compartment. On the IR side of the vehicle interior, the lower trim 2
The upper end portions 2a, which are the "end portions", are arranged in an overlapping state, and are joined by being caulked by a boss (not shown).

On the back surface 5b of the armrest portion 5 of the upper trim 3, a first impact energy absorber 6 is fixed with an adhesive 7. The first impact energy absorber 6
The armrest 5 is made of rigid urethane foam.
The surface 6a on the back surface 5b side is formed in a shape conforming to the shape of the back surface 5b, and the surface 6b on the OS side outside the vehicle compartment is formed substantially vertically, and faces the door inner panel INR.

Then, the front-rear direction (FR-RR) and the thickness direction (O-R) of the lower end 6c of the first impact energy absorber 6 are described.
An extended portion 8 extending from a part of the S-IR) to the back surface 2a of the lower trim 2 is formed. Specifically, there is a pair of front and rear extending portions 8, and there is a space portion SP between them.

A boss 9 protrudes from an upper end 2a of the lower trim 2, and a reinforcing rib 1 is formed on a peripheral surface of the boss 9.
The boss 9 is inserted into a through hole 11 formed in the extension 8, and the boss 9 and the through hole 11 are formed.
The extending portion 8 is supported by an adhesive 7 interposed between the extending portion 8 and the adhesive.

The lower end 6 of the first impact energy absorber 6
As shown in FIG. 2, the shape of the through hole 11 between the c and the extending portion 8 is formed in a wedge shape having the vertices 6 d and 8 a, respectively. The boss 9 is prevented from coming off. This is because although the surface 6a side of the first impact energy absorber 6 is fixed by the adhesive 7, the adhesiveness of the hard urethane foam and the upper trim 3 of the wooden core material to be bonded is considered.

Reference numeral 12 denotes a back surface 2b of the lower trim 2.
And the upper end portion 12a of the second impact energy absorber 12 is superimposed on the extending portion 8 of the first impact energy absorber 6 from the OS outside the vehicle compartment. In other words, as shown in FIGS. 2 and 4, a notch 13 into which the extension 8 of the first impact energy absorber 6 enters is formed, and the cutout 13 is formed from the outdoor OS side. Will cover.

The second impact energy absorber 12 is made of expanded polypropylene having a reaction force characteristic higher than the reaction force characteristic of the first impact energy absorber 6, and the second impact energy absorber 12 deforms and moves the first impact energy absorber 6. The two impact energy absorbers 12 can be stopped. Also, the second impact energy absorber 12 has the same structure as the support structure of the first impact energy absorber 6 on the lower trim 2, and the boss portion B is inserted into the wedge-shaped through hole H and fixed by solidifying the adhesive A. Is done.

The first impact energy absorber 6 is disposed in the armrest portion 5 swelling toward the IR side of the passenger compartment, closer to the occupant than the second impact energy absorber 12, and near the flank of the occupant. Therefore, the reaction force characteristic is set lower than that of the second impact energy absorber 12.

Reference numeral 20 in FIG. 1 denotes a pull handle portion provided on the armrest portion 5. The upper end portion 12 a of the second impact energy absorber 12 escapes so as not to interfere with the pull handle portion 20. Is formed.

Next, the operation of this embodiment will be described.

Extension 8 of the first impact energy absorber 6
And the upper end portion 12a of the second impact energy absorber 12 is superimposed, so that even if the impact is from the OS outside the vehicle compartment,
Even in the case of an impact from the vehicle interior IR side, the overlapping first impact energy absorber 6 and the second impact energy absorber 12 cooperate to absorb impact energy and have different reaction force characteristics. At the boundary between the absorber 6 and the second impact energy absorber 12, discontinuity and sudden change in the reaction force characteristics can be suppressed. Further, the extending portion 8 extends from a part in the front-back direction (FR-RR),
A sudden change in the reaction force characteristic can be suppressed as a shock absorbing surface. That is, the front-rear direction (FR
-RR), the change in the reaction force characteristic can be changed more gradually.

Further, since the upper end portion 12a of the second impact energy absorber 12 is arranged on the OS side of the extending portion 8 of the first impact energy absorber 6 outside the cabin, a hard urethane foam having relatively low adhesiveness is provided. Impact energy absorber 1 made of
The movement from the second boss 9 to the OS outside the vehicle compartment is suppressed. The first impact energy absorber 6 made of expanded polypropylene is better in adhesiveness, the shape itself is larger than that of the second impact energy absorber 12, and the bonding area with the lower trim 2 can be increased. It is advantageous.

A boss-shaped protruding portion is a boss portion 9 integrally formed with a lower trim 2 made of a thermoplastic resin material which can be easily molded, and is provided on a back surface of the upper trim 3 made of a wood core material 5c. Since the impact energy absorber 6 is supported, it is difficult to establish a boss-shaped protrusion.
Further, it is not necessary to set the boss portion by applying special measures to c, so that it can be manufactured at low cost and the support of the first impact energy absorber 6 is stabilized.

Further, the upper end 2a of the lower trim 2 is overlapped with the upper trim 3 at a side 5a which is the lower surface of the bulging portion of the armrest 5 of the upper trim 3, and the boss 9 is also formed on the upper end 2a of the lower trim 2. Protruding from
The overlapping portion of the lower trim 2 and the upper trim 3 and the establishment position of the boss portion 9 are out of the field of view of the occupant in the normal seating position (the blind spot), and the overlapping portion of the lower trim 2 and the upper trim 3 becomes inconspicuous. At the same time, even if "recess" is formed on the front surface side by the formation of the boss portion 9 on the back surface, it is not noticeable.

Since the boss 9 is provided on the lower surface of the lower surface of the bulging portion of the armrest 5, the shock energy absorption in the bulging portion can be sufficiently utilized. That is, when the boss portion 9 is set in the armrest portion 5, the boss portion 9 is substantially equal to the thickness of the first impact energy absorber 6 (the length in the OS-IS direction) due to the support strength of the first impact energy absorber 6. Sae)
This is because the reaction force characteristic is changed by the setting of the boss portion 9 because it is required near, which is not preferable.

In the above embodiment, the door trim 1 which is divided into upper and lower parts is taken as an example. However, the present invention can be applied to, for example, connection of a side trim and a pillar trim. Also,
The present invention can be applied not only to the connection in the up-down direction but also to the connection in the front-back or left-right direction. Further, only one trim body may be formed of the thermoplastic synthetic resin, and the material of the other trim body is not limited.

[Brief description of the drawings]

FIG. 1 is a perspective view of a door trim.

FIG. 2 is a sectional view taken along the line SA-SA of FIG. 1;

FIG. 3 is a perspective view of a first impact energy absorber of FIG. 2;

FIG. 4 is a perspective view of a second impact energy absorber of FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 door trim (trim) 2 lower trim (one trim main body) 3 upper trim (the other trim main body) 5 armrest section 6 first impact energy absorber 7 adhesive 8 extension section 10 boss section 11 through hole 12 second impact energy absorption Body 12a Upper end of second impact energy absorber

Claims (5)

[Claims] An automobile trim structure in which an end of one trim main body made of a synthetic resin material is joined to an end of the other trim main body made of a different material from the one trim main body in a state of being overlapped. A first impact energy absorbing member disposed on the back surface of the other trim body, extending to the back surface of the one trim body, and a boss formed on the back surface of the one trim body; The second impact energy absorber disposed on the back surface of the one trim main body is extended so as to be superimposed on the extending portion of the first impact energy absorber. An automotive trim structure characterized by the following. 2. The vehicle trim structure according to claim 1, wherein the one trim body is made of a thermoplastic resin, and the other trim body is made of a wood core material. For trim structure. 3. The automotive trim structure according to claim 1, wherein the first impact energy absorber is made of hard urethane foam, and the second impact energy absorber is made of expanded polypropylene. An automobile trim structure characterized in that the second impact energy absorber can prevent deformation movement of the first impact energy absorber. 4. A boss-shaped protruding portion is formed at the end of one trim body made of a thermoplastic resin material which can be easily molded, and the other trim body made of a wood core material made of a material different from that of the one trim body. A trim structure for an automobile in which ends are joined together in an overlapped state, wherein a boss portion is integrally formed on a rear surface of one trim body near an end of the overlapped portion, and the other trim body is formed. The impact energy absorber disposed on the back surface of the trim body is extended to the back surface of one trim body, and the extended portion is supported by a boss formed on the back surface of the trim body. Characteristic automotive trim structure. 5. The trim structure for an automobile according to claim 2, wherein a portion near an end of the overlapping portion of the other trim main body is formed as a bulging portion for an armrest portion. At the same time, the impact energy absorber is arranged in the bulging portion, while the one trim main body is overlapped below the bulging portion of the other trim main body, and the boss portion is provided for the armrest portion. A trim structure for an automobile, wherein the trim structure is located on a back surface of a lower surface of the bulging portion.