JP2011084215A - Arm rest - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the rigidity of the top surface portion of an arm rest while increasing the impact absorbing performance thereof at the time of side collision. <P>SOLUTION: This arm rest 10 of a door trim 20 for a vehicle which is adaptable to side collision includes the top surface portion 11 for resting the elbow of the user thereon. A plurality of elongated holes 15 are formed in the top surface portion 11 in the longitudinal direction of the vehicle. A reinforcement rib 16 is projected from the top surface portion 11 at a position adjacent to the plurality of elongated holes 15. At the time of side collision, the top surface portion 11 is deformed starting at the plurality of elongated holes 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an armrest.

  2. Description of the Related Art Conventionally, as a vehicle door trim capable of handling a side collision, for example, the one described in Patent Document 1 below is known. This includes an armrest that extends in the vehicle front-rear direction at the center of the door trim body, and a notch groove is formed in the top surface portion of the armrest. According to this vehicle door trim, the notch groove is provided to reduce the rigidity of the top surface portion of the armrest, and the notch groove is deformed at the time of a side collision, whereby the impact can be mitigated.

JP-A-9-66740

  However, the top surface portion of the armrest is required to have a rigidity that does not deform when the elbow is placed. This is for preventing the top surface portion from being bent when the elbow is placed, and the armrest from being deformed in some cases to impair the armrest function. However, in order to improve the impact absorption performance at the time of a side collision, the top surface portion must be weakened by some method, and as a result, the rigidity of the top surface portion is reduced. Thus, in the armrest, the problem of improving the impact absorption performance at the time of a side collision is incompatible with the problem of ensuring the rigidity of the top surface portion, and it is difficult to achieve both.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to secure the rigidity of the top surface portion while improving the impact absorption performance at the time of a side collision.

  The present invention is an armrest for a vehicle door trim that can cope with a side collision, and includes a top surface portion on which an elbow is placed, and a plurality of holes are formed in the top surface portion along the vehicle front-rear direction. Reinforcing ribs are provided to protrude at positions adjacent to the plurality of holes in the portion, and the top surface portion is deformed starting from the plurality of holes at the time of vehicle side collision. Have.

  According to such a configuration, since the top surface portion of the armrest is deformed starting from the plurality of holes at the time of a side collision, the impact absorbing performance can be improved. Furthermore, since the reinforcing rib is provided at a position adjacent to the plurality of holes in the top surface portion, when the elbow is placed on the top surface portion, it is possible to ensure rigidity that the top surface portion does not bend and deform near the hole. .

The following configuration is preferable as an embodiment of the present invention.
The reinforcing rib may be arranged on the outer side of the passenger compartment with respect to the plurality of holes.

  When the rib is disposed closer to the vehicle interior side than the plurality of holes, the rib is disposed closer to the side surface portion (vehicle interior side surface portion) of the armrest, and the rib may interfere with the side surface portion in a side collision. In that respect, according to the above configuration, since the rib is disposed outside the vehicle compartment with respect to the plurality of holes, the rib is disposed away from the side surface portion, and the rib does not interfere with the side surface portion of the armrest during a side collision.

  The plurality of holes may have a configuration in which a plurality of long holes are arranged in the longitudinal direction.

  According to such a configuration, the long hole itself is easily configured as a part of the bending edge of the top surface portion at the time of a side collision, and the deformation operation starting from the plurality of holes can be stably performed. Moreover, the structure of the shaping | molding die which shape | molds a top | upper surface part can be simplified. That is, since the number of holes is reduced by making the holes long, the number of protrusions for forming the long holes in the mold can be reduced.

  According to the present invention, it is possible to ensure the rigidity of the top surface portion while improving the impact absorption performance at the time of a side collision.

The perspective view which showed the surface of the armrest in embodiment Perspective view showing the back of the armrest AA line sectional view in FIG.

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. The armrest 10 in the present embodiment is provided in a form that bulges toward the vehicle interior side in the vehicle door trim 20, and has a shape that is long in the vehicle front-rear direction, as shown in FIG. 1. In detail, as shown in FIG. 3, the armrest 10 is fixedly attached to the mounting opening 21 opened in the vehicle door trim 20 without any gap.

  The vehicle door trim 20 has a door trim base material 22, and a door trim skin material 23 is adhered to the surface of the door trim base material 22. On the other hand, the armrest 10 has an armrest base material 13, and an armrest skin material 30 is attached to the surface of the armrest base material 13. The armrest skin material 30 is folded inward at the outer peripheral edge of the armrest base material 13. With the folded portion pressed against the door trim skin material 23, the armrest base material 13 is fixed to the door trim base material 22 or the door panel (not shown) by fixing means such as clips and screws. As a result, no abnormal noise or gap is generated between the door trim skin material 23 and the armrest skin material 30.

  The armrest 10 includes a top surface portion 11 for placing an elbow and a side surface portion 12 facing the vehicle interior side. The top surface portion 11 has a surface extending substantially in the vehicle width direction, and the side surface portion 12 has a surface extending substantially in the vertical direction. The armrest 10 has a configuration in which the vehicle interior side end portion of the top surface portion 11 and the upper end portion of the side surface portion 12 are continuous. As a result, the armrest 10 has a substantially L-shape as a whole and bulges from the vehicle door trim 20 toward the vehicle interior side.

  The top surface portion 11 includes an armrest base material 13, a pad 40 disposed on the upper surface of the armrest base material 13, and an armrest skin material 30 disposed on the upper surface of the pad 40. The pad 40 is made of a flexible sponge material or rubber material, and is sandwiched between the armrest base material 13 and the armrest skin material 30. Thereby, when a seated person places an elbow on the top surface portion 11, the pad 40 is bent and deformed so as to receive a comfortable elbow cushion. On the other hand, the side surface portion 12 does not include the pad 40, and the armrest skin material 30 is directly disposed on the side surface of the armrest base 13 in the vehicle interior.

  The outer side portion of the armrest skin material 30 in the top surface portion 11 is folded and fixed downward at the outer side portion of the armrest base material 13 in the passenger compartment. On the other hand, the vehicle interior side portion of the armrest base material 13 is sandwiched between the upper end folded portion of the armrest skin material 30 in the side surface portion 12 and the armrest base material 13.

  As described above, the upper end portion of the side surface portion 12 is folded to the outside of the passenger compartment and is tightly bent. Moreover, the position corresponding to the upper-end folding | turning part of the side part 12 in the armrest base material 13 is dented in the vehicle interior outer side. The depth of the dent is substantially the same as the thickness of the armrest skin material 30 in the compressed state. On the other hand, the lower end portion of the side surface portion 12 is folded and fixed to the outside of the passenger compartment at the lower end portion of the armrest base material 13.

  A flange portion 24 is formed in the opening edge portion of the attachment port 21 so as to project in the vehicle width direction. The lower end portion of the side surface portion 12 is in contact with the flange portion 24 on the left side in FIG. 3, and the flange portion 24 is configured to receive a load from the top surface portion 11. On the other hand, a plurality of support protrusions 14 are formed on the outer surface of the armrest base 13 of the top surface portion 11 so as to protrude downward. As shown in FIG. 2, the plurality of support protrusions 14 are disposed intermittently along the vehicle front-rear direction. The plurality of support protrusions 14 are in contact with the right flange portion 24 in FIG. Thus, the right flange portion 24 in the drawing is configured to receive a load from the top surface portion 11 together with the left flange portion 24 in the drawing.

  Now, the armrest 10 of the present embodiment has a plurality of long holes 15, and can be deformed in a form in which the bent edges protrude upward with the plurality of long holes 15 being bent edges at the time of a side collision. As shown in FIG. 2, the plurality of long holes 15 are arranged over substantially the entire area of the top surface portion 11, and are provided side by side in the vehicle front-rear direction at the approximate center in the vehicle width direction of the armrest base material 13. Each elongated hole 15 has a rectangular shape extending in the vehicle front-rear direction. The interval between the long holes 15 is shorter than the longitudinal dimension of the long holes 15. In addition, since the armrest skin material 30 is disposed on the upper surface of the armrest base material 13 via the pad 40, even when the armrest skin material 30 is touched from above, the presence of the long hole 15 cannot be recognized. ing.

  By the way, when the long hole 15 is provided, the resin amount of the top surface portion 11 is reduced by the number of the long holes 15, and the rigidity of the top surface portion 11 is decreased. For this reason, when an elbow is placed on the top surface portion 11, the top surface portion 11 is bent downward, and the quality of the armrest 10 is degraded. That is, the quality required for the armrest 10 is to improve the impact absorption performance at the time of a side collision without bending the top surface portion 11 while receiving the elbow of the seated person.

  Therefore, in this embodiment, as shown in FIG. 2, reinforcing ribs 16 are provided at positions adjacent to the plurality of long holes 15 on the back surface of the top surface portion 11. The reinforcing ribs 16 are formed integrally with the back surface of the armrest base material 13 and are provided so as to extend in the vehicle front-rear direction over almost the entire top surface portion 11. Thereby, the rigidity of the armrest base material 13 in the top surface portion 11 is increased, and when the elbow is placed on the top surface portion 11, the top surface portion 11 can be restricted from being bent downward.

  In particular, the long holes 15 are configured to extend in the vehicle front-rear direction and are arranged side by side in this direction, so that the bent edges at the time of a side collision are also easily formed in a form extending in the vehicle front-rear direction. Therefore, it becomes easy to control the deformation operation at the time of a side collision. Further, the reinforcing rib 16 is disposed outside the vehicle compartment with respect to the plurality of long holes 15. Thereby, it can avoid that the reinforcement rib 16 interferes with the side part 12 at the time of a side collision.

  Here, from the viewpoint of avoiding interference with the side surface portion 12, it is ideal to arrange the reinforcing rib 16 at a position farthest from the side surface portion 12. However, if the reinforcing ribs 16 are arranged at positions away from the plurality of long holes 15, it is difficult to reinforce the reduction in rigidity due to the provision of the plurality of long holes 15. That is, if it is to reinforce the reduction in rigidity due to the provision of the plurality of long holes 15, it is better to arrange them as close to the plurality of long holes 15 as possible. For these reasons, the reinforcing rib 16 is disposed at a position adjacent to the plurality of long holes 15 and on the outer side of the passenger compartment than the plurality of long holes 15. As a result, it is possible to realize both the problem of improving the impact absorption performance at the time of a side collision and the problem of ensuring the rigidity of the top surface portion 11.

  The present embodiment is configured as described above, and its operation will be described subsequently. At the time of a side collision, the door panel is pushed into the vehicle door trim 20 side, and the armrest 10 is deformed when the armrest 10 comes into contact with the seated person. At this time, the armrest 10 bends upward from a bending edge formed in the direction in which the plurality of long holes 15 are arranged. At this bent edge, the amount of resin is reduced by the number of the long holes 15 and the rigidity is lowered. Therefore, the armrest 10 is deformed with a low load, and high shock absorbing performance can be exhibited.

  On the other hand, during normal times, a seated person frequently puts his elbow on the top surface portion 11 of the armrest 10, and the bending deformation of the top surface portion 11 can be restricted by stroking the reinforcing rib 16 each time. Therefore, a high shock absorbing performance can be exhibited in the case of a side collision while maintaining the function as the armrest 10 at the normal time.

  In addition, when resin-molding the armrest base material 13, the part of the long hole 15 can be easily demolded. That is, in the case of the long hole 15, the number of holes can be reduced as compared with the case where the bent edge is formed by a hole shorter than the long hole 15, and the configuration of the mold is simplified. become.

  As described above, in the present embodiment, since the plurality of long holes 15 are provided in the top surface portion 11 and the reinforcing ribs 16 are provided at positions adjacent to the plurality of long holes 15, the impact absorption performance at the time of a side collision is improved. However, the rigidity of the top surface portion 11 can be ensured. Further, since the reinforcing ribs 16 are disposed outside the passenger compartment with respect to the plurality of long holes 15, interference between the reinforcing ribs 16 and the side surface portions 12 can be avoided. Furthermore, since the plurality of long holes 15 are arranged side by side in the longitudinal direction, the plurality of long holes 15 themselves are easily formed as a part of the bending edge, and the top surface portion 11 can be stably deformed. become.

<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.
(1) Although the armrest 10 is provided with the top surface portion 11 and the side surface portion 12 in the above embodiment, according to the present invention, the armrest may be configured only by the top surface portion 11, and the side surface portion is a vehicle door trim. 20 may be provided.

  (2) Although the armrest 10 is provided with one reinforcing rib 16 in the above embodiment, the reinforcing rib may be configured by arranging a plurality of ribs side by side in the vehicle front-rear direction.

  (3) Although a plurality of the long holes 15 are arranged along the longitudinal direction in the above embodiment, the shape of the holes is not limited according to the present invention, and may be a square hole or a circular hole. Further, the long hole may be arranged in a form extending in the vehicle width direction, and the long hole may be arranged along the vehicle front-rear direction.

  (4) Although the top surface portion 11 is bent upward with the plurality of long holes 15 as the bending edges in the above embodiment, according to the present invention, the top surface portion 11 with the plurality of long holes 15 as the bending edges. May be bent downward.

DESCRIPTION OF SYMBOLS 10 ... Armrest 11 ... Top surface part 15 ... Long hole 16 ... Reinforcement rib

Claims (3)

An armrest for a vehicle door trim that can handle a side collision,
It has a top surface for placing an elbow
A plurality of holes are formed in the top surface portion along the vehicle front-rear direction. Reinforcing ribs are provided to project at positions adjacent to the plurality of holes in the top surface portion. The armrest, wherein the top surface portion is deformed starting from the plurality of holes.   The armrest according to claim 1, wherein the reinforcing rib is disposed outside the vehicle compartment with respect to the plurality of holes.   The armrest according to claim 1 or 2, wherein the plurality of holes are formed by arranging a plurality of long holes along a longitudinal direction thereof.

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