JP6724501B2 - Vehicle door trim - Google Patents

Description

The present invention relates to a vehicle door trim provided inside a vehicle door inner panel.

The door trim provided on the door of the vehicle is mainly made of resin and often leans against the occupant, and a load according to the physique of the occupant is routinely applied. Also, in the event of an emergency such as a side collision, a large load is applied to the door trim due to the deformation of the door outer panel and door inner panel on the vehicle exterior side, and a large load is also applied to the door trim from the vehicle interior side due to contact with the occupants and side airbags. To be Door trims, which are often subjected to loads like these, need to have appropriate strength so as not to come into contact with an occupant due to cracks or the like. On the other hand, some flexibility is required so that the load can be absorbed when the occupant comes into contact with the occupant.

For example, in the door trim disclosed in Patent Document 1, a portion near the side surface of the chest of the occupant is molded with a soft resin material, and then the door inner panel side of the portion is thinned by laser irradiation with a laser irradiation portion ( A thin portion) is provided. With this, Patent Document 1 states that the collision load of the occupant can be effectively absorbed.

JP 2005-329805 A

However, in the technique of Patent Document 1, since the thin-walled portion is provided at the position where the occupant comes into contact with the occupant, in the unlikely event that the thin-walled portion is cracked due to an emergency load, the occupant may come into contact with the crack. is there. In addition, as a method of providing a thin portion, a method that is cheaper than laser irradiation is also desired.

In view of such a problem, the present invention provides a vehicle door trim capable of mitigating an impact, preventing generation of a crack at a position where an occupant comes into contact, and capable of being implemented by a more inexpensive method. The purpose is to

In order to solve the above problems, a typical configuration of a vehicle door trim according to the present invention is a vehicle door trim provided inside a door inner panel of a vehicle, wherein the vehicle door trim covers the door inner panel. Part, a side wall part extending from the edge of the covering part to the door inner panel side, and a connecting member which is provided over the covering part and the side wall part on the door inner panel side of the door trim and connected to the door inner panel can be attached. It is characterized in that it is provided with a pedestal part and a thin side wall part linearly provided in a region of the side wall part straddling the pedestal part.

According to the above configuration, when a load is applied in an emergency or the like, bending is generated near the base of the pedestal part starting from the thin wall portion of the side wall, and the impact that can be given to the occupant can be mitigated. In particular, since the thin side wall portion is provided on the side wall portion that is the edge of the vehicle door trim, even if a crack or the like occurs, the possibility that the occupant will contact is low.

The pedestal portion has a leg portion extending from the covering portion to the door inner panel side, and a top face portion provided at the tip of the leg portion and facing the door inner panel to which the connecting member is fitted, the side wall thin wall The part may be provided in parallel to the top surface part. Since the top surface is connected to the door inner panel by the connecting member, the load tends to concentrate. However, since the thin wall portion is provided in parallel with the top surface portion, the load concentrated on the top surface portion can be efficiently absorbed.

The vehicle door trim may further include a thin pedestal portion linearly provided on the pedestal portion. With this configuration, it is possible to further reduce the impact that can be given to the occupant. Further, the pedestal portion is a connection point between the vehicle door trim and the door inner panel, and is inherently apt to have high rigidity. Therefore, the pedestal portion is limited in installation location, for example, provided in a location where an occupant does not come into contact. However, according to the above configuration, since the rigidity of the pedestal can be reduced by the thin pedestal, the pedestal can be provided more freely.

In the vehicle door trim, the pedestal thin portion may continuously extend from the side wall thin portion. With this configuration, it is possible to further reduce the impact that can be given to the occupant.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide a vehicle door trim capable of mitigating an impact, preventing generation of a crack at a position where an occupant comes into contact, and being able to be implemented by a more inexpensive method. ..

It is a figure which shows the vehicle door trim concerning embodiment of this invention. It is an AA sectional view of Drawing 1 (b). It is the figure which each showed the pedestal part different from Fig.1 (a). It is a BB sectional view of the pedestal part of Drawing 3 (a).

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the invention unless otherwise specified. In this specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to omit redundant description, and elements not directly related to the present invention are omitted. To do.

FIG. 1 is a diagram showing a vehicle door trim (hereinafter, door trim 100) according to an embodiment of the present invention. FIG. 1A is a view showing a vehicle door 102 on the right side of the vehicle, in which the door trim 100 is mounted, from the inside of the vehicle. 1 and all other drawings of the present application, the vehicle front-rear direction is indicated by arrows F (Forward) and B (Backward), and the vehicle width direction is indicated by arrows L (Leftward), R (Rightward), and vehicle up-down direction, respectively. Are illustrated by arrows U (upward) and D (downward), respectively.

The door trim 100 is a resin member provided inside the door inner panel 104 of the vehicle door 102. In the door trim 100, the covering portion 106 that widely covers the door inner panel 104 is a so-called design surface, and is provided with an armrest 108 or subjected to a surface treatment to improve the aesthetics of the vehicle interior. There is.

FIG. 1B is a view showing the vehicle rear side upper portion of the door trim 100 of FIG. 1A from the vehicle outer side (door inner panel 104 side). A pedestal portion 110 is provided on the surface of the door trim 100 on the door inner panel 104 side. The pedestal portion 110 is a portion to which a connecting member such as a clip 120 (see FIG. 2) connected to the door inner panel 104 is attached. The pedestal portion 110 is provided so as to straddle the covering portion 106 and a side wall portion 112 extending from the edge of the covering portion 106 toward the door inner panel 104.

In the door trim 100, the thin side wall portion 114 is provided in a region of the side wall portion 112 where the pedestal portion 110 straddles. The thin side wall portion 114 is a linearly thin portion having a thin plate thickness, and has a function of cushioning an impact when an occupant or the like comes into contact with the door trim 100 in an emergency.

FIG. 2 is a sectional view taken along the line AA of FIG. The pedestal portion 110 has a leg portion 116 and a top surface portion 118. The leg portion 116 extends upright from the covering portion 106 to the door inner panel 104 side, and the top surface portion 118 is provided across the tip of the leg portion 116 and the side wall portion 112. The top surface portion 118 has a shape facing the door inner panel 104, and a clip 120 is fitted therein as an example of a connecting member. The pedestal portion 110 is connected to the door inner panel 104 via the clip 120.

The thin side wall portion 114 is provided by being dug in a groove shape in the side wall portion 112 within a range surrounded by the leg portion 116 and the top surface portion 118. Since the side wall thin portion 114 is provided at this position, for example, when the occupant contacts the covering portion 106, the side wall portion 112 can be intentionally deflected. In particular, since the pedestal portion 110 is connected to the door inner panel 104 by the clip 120, the vicinity of the base of the pedestal portion 110 of the door trim 100 is a portion where rigidity is originally likely to increase. By bending the side wall portion 112 at this portion, it is possible to efficiently absorb the load and reduce the impact given to the occupant.

Also, for example, at the time of a side collision, a shock may be applied to the door trim 100 from the door inner panel 104 outside the vehicle. Even in that case, the load on the covering portion 106 is softened by bending the vicinity of the base of the pedestal portion 110, and thus the deformation and damage of the covering portion 106 can be suppressed.

Since the thin side wall portion 114 is a so-called fragile portion having a small plate thickness, it has a surface that is more likely to cause a crack when compared to other portions. However, in this embodiment, since the thin side wall portion 114 is provided on the side wall portion 112 in the vicinity of the pillar 109 or the like and which does not contact the occupant, there is no possibility of touching the occupant even if cracks or cracks occur. ..

FIG. 3 is a diagram showing a pedestal portion different from that shown in FIG. In the pedestal portion 122 shown in FIG. 3A, the leg portions 124 are provided so as to intersect the side wall portion 112. Also in this example, the thin side wall portion 128 is provided in a region of the side wall portion 112 where the top surface portion 126 and the leg portion 124 straddle each other.

The thin side wall portion 128 extends parallel to the top surface portion 126. The top surface portion 126 is connected to the door inner panel 104 by the clip 120 (see FIG. 2), so that the load is likely to be concentrated, but the load is that the thin side wall portion 128 near the top surface portion 126 bends along the top surface portion 126. Is efficiently absorbed by. Therefore, even when the occupant comes into contact with the covering portion 106, the impact that can be given to the occupant can be mitigated.

In the pedestal portion 130 shown in FIG. 3B, the top surface portion 132 is connected to the side wall portion 112, and the leg portions 134 are provided along the edge of the top surface portion 132 from the side wall portion 112 to the covering portion 106. There is. In this example, the side wall thin portion 136 parallel to the top surface portion 132 is provided on the side wall portion 112 between the top surface portion 132 and the covering portion 106.

In the pedestal portion 130, the pedestal thin portion 138 is also provided on the leg portion 134. The pedestal thin portion 138 extends continuously from the side wall thin portion 136 along the top surface portion 132. The thin base portion 138 is also a portion formed by reducing the plate thickness of the leg portion 134.

The thin side wall portion 136 provided on the side wall portion 112 and the thin pedestal portion 138 provided on the leg portion 134 are provided in a line parallel to the top surface portion 132. By bending the thin side wall portion 136 and the thin base portion 138, it is possible to absorb the load concentrated on the top surface portion 132. Therefore, the impact that may be applied to the occupant in contact with the covering portion 106 can be further reduced, and the load transmitted from the door inner panel 104 (see FIG. 2) to the door trim 100 can be further absorbed.

The pedestal portions (pedestal portions 110, 122, 130) described above are connection points between the door trim 100 and the door inner panel 104 (see FIG. 2 ), and the rigidity is naturally high. For this reason, conventionally, restrictions have been lent to installation locations, such as installation in locations where passengers do not come into contact. However, according to the door trim 100, since the rigidity of each pedestal can be reduced by the thin side wall portions 114, 128, 136 and the thin pedestal portion 138, these pedestals can be provided more freely.

Further, since the door trim 100 can exhibit a certain degree of flexibility due to the above-mentioned thin portions, even when the seat side airbag touches the covering portion 106, the seat side airbag can be smoothly inflated. Can be made.

FIG. 4 is a BB cross-sectional view of the pedestal portion 122 of FIG. In the door trim 100, the thin side wall portion 128 is provided together with the pedestal portion 122 at the time of injection molding.

Since the door trim 100 is mainly made of resin, it is manufactured by injection molding. First, the first die cutting is performed in a direction facing the covering portion 106, which is a wide surface. Therefore, the molds 140 and 142 for molding the covering portion 106 and the side wall portion 112 are pulled out in the vehicle width direction.

The pedestal portion 122 has a so-called undercut shape that cannot be formed only by the molds 140 and 142, and is formed by using the slide core 144. Therefore, as the second die cutting, the slide core 144 is die cut in a direction intersecting with the die.

The thin side wall portion 128 is formed by the slide core 144 together with the top surface portion 126 of the pedestal portion 122 and the like. With this configuration, the side wall thin portion 128 can be provided at a low cost when the door trim 100 itself is injection-molded.

The pedestal thin portion 138 shown in FIG. 3B can also be molded by using the slide core when molding the pedestal portion 130. In the case of the method of molding each thin-walled portion with the slide core, the position of each thin-walled portion is modified according to each injury value when the door trim 100 comes into contact with the occupant's chest, abdomen, waist, etc. The width, depth, etc. can be easily adjusted.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope described in the claims, and naturally, they also belong to the technical scope of the present invention. Understood.

INDUSTRIAL APPLICATION This invention can be utilized for the vehicle door trim provided in the vehicle inner side of the vehicle door inner panel.

100... Door trim, 102... Vehicle door, 104... Door inner panel, 106... Cover part, 108... Armrest, 110... Pedestal part, 112... Side wall part, 114... Side wall thin part, 116... Leg part, 118... Top part, 120... Clip, 122... Pedestal part, 124... Leg part, 126... Top part, 128... Side wall thin part, 130... Pedestal part, 132... Top part, 134... Leg part, 136... Side wall thin part, 138... Pedestal thin part Parts, 140, 142... Mold, 144... Slide core

Claims (4)

In the vehicle door trim provided inside the vehicle door inner panel,
The vehicle door trim is
A covering portion that covers the door inner panel,
A side wall portion extending from the edge on the pillar side of the covering portion to the door inner panel side,
A pedestal portion to which a connecting member that is provided over the covering portion and the side wall portion on the door inner panel side of the door trim and that is connected to the door inner panel can be attached,
A thin sidewall portion linearly provided in a region of the sidewall portion where the pedestal portion extends,
Equipped with
It said sidewall thin portion, a vehicle door trim, characterized that you have provided in the vehicle outside than the interior end of the pillar. The pedestal part is
A leg portion extending from the covering portion to the door inner panel side,
A top face portion provided at the tip of the leg portion, facing the door inner panel, and fitted with the connecting member;
Have
The vehicle door trim according to claim 1, wherein the side wall thin portion is provided in parallel with the top surface portion. The vehicle door trim according to claim 1 or 2, further comprising a pedestal thin-walled portion linearly provided on the pedestal portion. The vehicle door trim according to claim 3, wherein the pedestal thin portion continuously extends from the side wall thin portion.

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