JP2007083899A - Vehicular door trim - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular door trim promptly capable of efficiently absorbing impact by deforming at the time of side collision, and formed with an arm rest having stiffness sufficient in normal use. <P>SOLUTION: On the door trim 1 attached to an inner panel IP of a door 2, an arm rest 11 projecting out toward the inside of a vehicular cabin is formed. On a back side of an upper surface 11a thereof, three groove portions 13, 14, 15 reducing strength of parts where the groove portions are formed by making the parts thin are formed When pressed by a seated person DR at the time of the collision, the arm rest 11 is deformed at the groove portions 13, 14, 15 to reduce impact to the seated person DR. A line shape of the groove portion 15 is formed to make a distance from a part pressed by the seated person DR at the time of the collision, of side end portion 11b of the arm rest 11, approximately uniform, and formed in a curved shape bulging to the outside of the vehicular cabin at a center portion on the arm rest 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle door trim that is deformed by being pressed by a seated person at the time of a side collision of the vehicle and reduces an impact on the seated person.

  There has been a related art related to a door trim that includes an armrest that is attached to a door panel of a vehicle and protrudes toward a vehicle interior (see, for example, Patent Document 1). The upper surface of the armrest disclosed therein is a flat surface for placing the elbow of the seated person, and a plurality of grooves extending in the front-rear direction are formed on the back side of the flat surface. When a collision (side collision) occurs on the door, the armrest is pressed horizontally against the occupant's body, so that the energy of the collision is consumed due to the deformation of the armrest in the groove, and the collision to the occupant due to the side collision occurs. Impact is reduced.

However, in the door trim according to the prior art described above, since the groove formed on the upper surface of the armrest extends linearly on the armrest, each position on the groove is the position of the armrest pressed by the seated person at the side collision. The side ends have different distances, and a difference occurs in the impact applied to each position on the groove at the time of a side collision. In other words, compared to the central portion in the length direction of the groove, the both end portions thereof are separated from the pressing portion to the seated person of the armrest, so that the deformation due to the impact at the side collision is partially delayed, to the seated person There is a risk that the effect of reducing the impact will be reduced.
Moreover, the rigidity of the upper surface of the armrest is lowered by the groove extending linearly on the armrest, and when the occupant normally places the elbow on the armrest, the upper surface of the armrest sinks downward and the rigidity may be insufficient. In order to solve this problem, there has been a conventional technique in which a support member that supports the upper surface is disposed on the back side of the upper surface of the armrest (see, for example, Patent Document 2). However, according to this, there is a problem that the number of parts is increased and the cost is increased, and the labor for assembling the door trim is also increased.
Japanese Utility Model Publication No. 6-87021 (FIGS. 1 and 2) Japanese Unexamined Patent Publication No. 9-66740 (FIG. 1)

  The present invention has been completed based on the above-described circumstances, and is capable of quickly deforming at the time of a side collision, efficiently absorbing the impact, and forming an armrest having rigidity that does not hinder normal use. An object is to provide a vehicle door trim.

  As means for achieving the above-mentioned object, the invention of claim 1 is provided with an armrest that is attached to a door panel of a vehicle and protrudes toward the vehicle interior, and on the armrest, a linear shape extending in the front-rear direction. In the vehicle door trim in which the armrest is deformed in the thin portion by being pressed by a seated person at the time of a side collision of the vehicle, and in the vehicle door trim that reduces the impact on the seated person, the thin portion is The vehicle door trim is characterized by being formed in a linear shape that bulges outward from the passenger compartment.

  The invention according to claim 2 is the vehicle door trim according to claim 1, wherein the thin-walled portion is formed in a curved shape in which a central portion swells on the armrest.

  The invention according to claim 3 is characterized in that the thin portion extends on the armrest so as to cover a range of movement of the seated person as the vehicle seat moves in the front-rear direction. A vehicle door trim according to claim 1 or claim 2 is provided.

  The invention of claim 4 is characterized in that the thin-walled portion is formed such that the distance from the portion of the armrest pressed against the seated person is substantially uniform during a side collision. The vehicle door trim according to claim 1 or claim 2 is provided.

<Invention of Claim 1>
Since the thin wall portion is formed in a linear shape that bulges outward from the passenger compartment, the difference in impact applied to each position on the thin wall portion at the time of a side collision is reduced, and each position of the thin wall portion is reduced. Is quickly deformed and can efficiently absorb the impact. In addition, normally, when the seated person places the elbow on the upper surface of the armrest, the lowering of the lower surface of the upper surface of the armrest is reduced, and lack of rigidity is not felt.

<Invention of Claim 2>
The thin-walled part is formed in a curved shape with the center part swelled on the armrest, preventing stress from concentrating on the entire thin-walled part even if the elbow of the seated person is placed on the upper surface of the armrest. The deformation of the armrest can be prevented. Thereby, it is not necessary to provide a special support member on the back side of the armrest, and the seated person is not made to feel insufficient rigidity of the armrest.

<Invention of Claim 3>
The thin-walled portion extends on the armrest so as to cover the movement range of the seated person as the vehicle seat moves in the front-rear direction. The impact at the time of a side collision can be absorbed by the deformation of the thin portion.

<Invention of Claim 4>
The thin-walled portion is added to each position of the thin-walled portion at the time of a collision by adopting a configuration in which the distance from the portion pressed by the seated person in the armrest is substantially uniform at the time of a side collision. The impacts are also substantially equal, and each position of the thin wall portion is deformed almost simultaneously, so that the impact can be absorbed more efficiently.

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. A door trim 1 according to this embodiment shown in FIG. 1 is attached to a door 2 (shown in FIG. 4) on the right side of the front seat of a vehicle, and is integrally formed of a synthetic resin material such as polypropylene. As shown in FIG. 2, a decorative skin SK is partially attached to the vehicle interior side (left side in FIG. 2) (in FIG. 1, the skin SK is omitted). The door trim 1 is attached to an inner panel IP (shown in FIG. 4) of the door 2 on the outer surface of the vehicle, and an armrest 11 protrudes on the vehicle interior side. The upper surface 11a of the armrest 11 is a flat surface, and a switch pocket 12 that accommodates switches such as a power window is formed in front of the armrest 11 so as to penetrate the upper surface 11a.

  Three grooves 13, 14, 15 are formed on the rear side of the rear surface of the upper surface 11 a. Each of the grooves 13, 14, and 15 has a V-shaped cross section and is formed continuously, and by reducing the thickness of the corresponding portion of the upper surface 11a, the strength of each portion of the armrest 11 is reduced ( Fig. 2). Thus, when the door 2 is deformed so as to protrude toward the vehicle interior during a side collision of the vehicle, the armrest 11 is pressed and deformed by the seat occupant DR, thereby reducing the impact on the seat occupant DR (shown in FIG. 5). . As described above, the grooves 13, 14, and 15 have a V-shaped cross section. Therefore, when a side impact load is applied, stress tends to concentrate on the corner of the groove, and the armrest 11 is quickly deformed. .

  Of these, the groove 13 is formed in a linear shape near the base of the armrest 11 and extends in the front-rear direction. Moreover, the groove part 14 is formed in the side end part 11b of the armrest 11 at linear form, and is extended in the front-back direction along the side end part 11b. The groove portion 15 corresponds to a thin portion of the present invention, and extends linearly in the front-rear direction so as to be positioned at the center portion of the upper surface 11a. As shown in FIG. 2, the cross-sectional shape of the groove portion 15 is formed with a gentle slope on the outside of the passenger compartment in order to facilitate die cutting during molding.

  The linear shape of the groove portion 15 is formed so that the distance from the portion of the side end portion 11b of the armrest 11 that is pressed by the seated person DR (mainly the trunk portion) at the time of a side collision is substantially uniform. On the armrest 11, it is formed in a curved shape in which the central portion bulges (bulges out) toward the outside of the passenger compartment (shown in FIG. 4). The groove portions 13, 14, and 15 are optimal positions that can cover the moving range even if the seated person DR moves in the vehicle interior as the vehicle seat position (not shown) moves in the front-rear direction, and sufficient The length is formed. As shown in FIG. 5, at the time of a side collision of the vehicle, due to the deformation of the door 2, the armrest 11 pressed by the seated person DR is bent and deformed in the groove portions 13, 14, and 15, and the energy of the side collision is consumed. By doing so, the impact on the seated person DR is reduced.

  According to the present embodiment, the linear shape of the groove portion 15 is formed such that the distance from the portion of the side end portion 11b of the armrest 11 that is pressed by the seated person DR during a side collision is substantially uniform. By adopting such a configuration, the impact load applied to each position on the groove portion 15 at the time of a side collision becomes substantially equal, and each position of the groove portion 15 is quickly deformed, and the impact can be efficiently absorbed. Further, since the groove portion 15 is formed in a curved shape on the armrest 11, even when the elbow of the seated person DR is placed on the upper surface 11a, the load is concentrated on the entire groove portion 15. (It is difficult for a load to be applied to the vicinity of the central portion in the length direction of the groove portion 15 because it is at the end of the upper surface 11a), and the rigidity can be maintained without providing a special support member on the back side of the armrest 11. it can.

  Further, since the groove portion 15 is formed in a curved shape with the center portion swelled on the armrest 11, even if the elbow of the seated person DR is placed on the upper surface of the armrest 11, stress is concentrated on the entire groove portion 15. This prevents the armrest 11 from being deformed during normal use. This prevents the seated person DR from feeling insufficient rigidity of the armrest 11. Further, since the groove portion 15 is formed in a position and length that can cover the movement range of the seated person DR as the vehicle seat moves in the front-rear direction, the front-rear position of the vehicle seat varies. However, the impact load applied to each position on the groove portion 15 is also substantially equal, and each position of the groove portion 15 is quickly deformed, and the impact can be efficiently absorbed.

<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 cross-sectional shape of the groove is not limited to a V-shape, and any cross-sectional shape such as a rectangle or a U-shape can be used as long as the armrest is rapidly deformed at the time of a side collision.
(2) The groove portion may not be formed continuously on the back surface of the armrest, and may be formed intermittently in the length direction thereof.
(3) The groove portion does not necessarily have a curved shape as long as the distance from the portion pressed by the seated person DR in the side end portion of the armrest is formed in a linear shape. For example, it may be formed by connecting short straight portions.

It is a perspective view of the door trim by this embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a top view of the armrest shown in FIG. It is sectional drawing which shows the state which the armrest deform | transformed at the time of a side collision.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Door trim 11 ... Armrest 11a ... Upper surface of armrest 11b ... Side edge part of armrest 13, 14, 15 ... Groove DR ... Seated person IP ... Inner panel

Claims (4)

The armrest is attached to the door panel of the vehicle and has an armrest protruding toward the vehicle interior. A linear thin portion extending in the front-rear direction is provided on the armrest, and is pressed by the seated person when the vehicle collides. In the vehicle door trim that reduces the impact on the seated person by deforming the armrest in the thin wall portion,
The vehicle door trim according to claim 1, wherein the thin portion is formed in a linear shape that bulges outward from the passenger compartment. The vehicle door trim according to claim 1, wherein the thin portion is formed in a curved shape in which a central portion swells on the armrest. The said thin part is extended on the said armrest so that the movement range of the said seated person accompanying the vehicle seat moving to the front-back direction may be covered. Vehicle door trim. The said thin part is formed so that the distance from the site | part pressed by the said seated person in the said armrest may become substantially uniform at the time of a side collision. Vehicle door trim.

Images