JP2005289250A - Interior trim component for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior trim component for an automobile mounted on the interior surface side of a side wall panel of an automobile and equipped with an armrest almost at the center, which enhances shock absorbing performance, in particular, of an armrest mounting part. <P>SOLUTION: In a door trim (an interior trim part) 10, an armrest 40 is mounted in a mounting seat 31 of an armrest supporting part 30 of a door trim body 20. A boss 42 for mounting which is provided to the inner surface of the armrest 40 at suitable intervals along a longitudinal direction, is mounted in the respectively independent mounting seats 31 partitioned through the medium of notches 33. A load is locally imposed on the mounting seat 31 close to a firstly shocked part on a side collision or the like. After the applicable mounting seat 31 is flexibly deformed, the seat is easily ruptured. The rupture of the mounting seat 31 stretches to a neighboring mounting seat 31 so as to effectively absorb shock load. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to automotive interior parts such as door trims and rear side trims, and more particularly to automotive interior parts having improved shock absorption performance in a side collision.

  Normally, interior parts such as door trims and rear side trims are mounted on the interior side of the vehicle side wall panel to enhance the aesthetics of the interior of the vehicle, and when a side impact load is applied to the vehicle, such as in a side collision. The interior part itself is bent and deformed to absorb a part of the impact load and reduce the load applied to the occupant.

  FIG. 5 shows a conventional door trim 1. The door trim 1 includes a door trim body 2 made of a general-purpose synthetic resin, such as polypropylene resin, or an injection molded body, and the vicinity of an armrest portion of the door trim body 2. And a separate armrest 4 mounted on the upper surface of the armrest support portion 3 bulging toward the vehicle interior side.

  Conventionally, in order to attach the armrest 4 to the door trim main body 2, as shown in FIG. 6, the mounting boss 4 a protruding from the inner surface of the armrest 4 is inserted into the mounting hole 3 a provided in the armrest support 3. However, the fact is that the tip is attached by caulking (see, for example, Patent Document 1).

  Recently, as shown in FIG. 7, in order to enhance the ride comfort, the armrest 4 is set to be elongated along the left-right width direction of the door trim 1. As shown in FIGS. 8 and 9, the mounting structure of the door trim main body 2 and the armrest 4 is provided with a mounting seat 5 as a long flange along the longitudinal direction of the armrest 4. The mounting holes 5a are opened at regular intervals along the direction, and after the mounting bosses 4a on the inner surface of the armrest 4 are inserted into the corresponding mounting holes 5a, the tips are fixed by ultrasonic welding caulking, screw tightening or the like. It is the actual situation.

JP 2001-122007 A (page 3, FIGS. 1 and 2)

  Thus, in order to improve the comfort at the time of boarding, when the elongate armrest 4 is provided, several attachment points are set along the longitudinal direction of the armrest 4, and the elongate flange shape in the armrest support part 3 is set. The mounting boss 4a of the armrest 4 is fixedly mounted in a mounting hole 5a that is arranged in series with a fixed interval on the mounting seat 5, but in the mounting structure of the armrest 4, a side collision, etc. When an impact is applied from the side of the vehicle, the entire long flange-shaped mounting seat 5 receives an impact load, so the reaction force applied to the occupant is large, and a considerable impact is required to achieve shock absorption due to breakage. There was a drawback that an ideal shock absorbing performance could not be obtained because a load was required.

  As a countermeasure, it is possible to speed up the breakage by providing the mounting seat 5 with a rigidity-decreasing portion, for example, a V groove 6 indicated by a dotted line in FIG. 9. For this purpose, the armrest support portion 3 of the door trim body 2 is used. The mold processing of the molding die for molding the mold is troublesome, which increases the man-hours, and the V-groove 6 reduces the support strength of the armrest support portion 3, so that the usual rigidity cannot be obtained. There was a problem that.

  The present invention has been made in view of such circumstances, and is an interior part that is attached to the interior side of a side wall panel of a vehicle, such as a door trim and a rear side trim, and includes an armrest on an armrest portion of a passenger , The initial reaction force at the time of a side collision is small, and the armrest mounting part is ruptured, so that excellent shock absorption performance can be obtained, and the armrest can be firmly supported during normal times, giving the passenger discomfort The object is to provide automotive interior parts that do not have any.

  In order to achieve the above object, the present invention is an interior part that is attached to the interior surface side of a side wall panel of a vehicle, and the interior part has an armrest support portion that is molded into a required shape and bulges to the interior side. In an automotive interior part comprising an interior trim body provided integrally and an armrest attached to an armrest support portion of the interior trim body, the armrest support portion has an opening on the upper surface, while the armrest longitudinal direction is A plurality of mounting seats are formed in a box shape along the armrest, the armrest is supported by the armrest support portion at a plurality of mounting points, and a notch for separating adjacent mounting seats is formed. .

  Here, the interior part can be applied to a door trim, a rear side trim, a luggage side trim such as a wagon car, etc. attached to the interior side of the side wall panel of the vehicle. Furthermore, the interior parts consist of an interior trim body, an interior trim, and a separate armrest. The interior trim body can be a molded resin molded press molded body, injection molded body, etc. The armrest support part which supports an armrest is formed in the bulging shape toward the vehicle interior side. In addition, the armrest support part has an opening on the top surface, and it can realize good shock absorption performance by bending deformation such as side impact, while the mounting seat provided on the armrest support part to firmly support the armrest is It is formed in a box shape with one paragraph from the product side.

  On the other hand, the armrest is assembled so that the longitudinal direction of the armrest matches the left-right width direction of the interior part. The armrest is preferably applied to a long armrest, but may be a general-purpose type. The armrest is supported by a plurality of mounting seats (mounting points) with respect to the interior trim body. This armrest may be composed of a synthetic resin injection-molded body alone, but it is also possible to adopt a structure that enhances cushioning and appearance by attaching a cushion material or skin material to the surface of the synthetic resin molded body. it can.

  Therefore, according to the automobile interior part of the present invention, the armrest hits the occupant when an impact is applied from the outside of the vehicle, such as in a side collision, but the impact load applied to the armrest is closest to the impact point. Since the mounting seat that is concentrated on the mounting seat and to which this load is concentrated is divided from the left and right mounting seats by the notches, each mounting seat is easily bent and the initial reaction force can be reduced. Furthermore, if the impact load is continuously applied, the mounting seat to which the load is first applied is easily broken, and then the adjacent mounting seats are broken, and the plurality of mounting seats are broken in a chain reaction manner. The impact load can be absorbed.

  Furthermore, a preferred embodiment of the present invention is characterized in that reinforcing ribs for enhancing the support strength of the armrest are integrally formed on the side edge and / or the upper edge of the mounting seat.

  According to this embodiment, since the reinforcing rib is integrally formed along the side edge and / or the upper edge of the mounting seat, the armrest is supported by the reinforcing rib when the armrest is attached to the armrest supporting portion. Since the rigidity of the part is reinforced, even if a downward load is applied to the upper surface of the armrest, it is not bent carelessly and the rigidity can be reinforced, so that the armrest can be given a firm feeling.

  Further, according to another embodiment of the present invention, the impact load of various patterns is effectively controlled by appropriately adjusting the width dimension and shape of the notches that divide the mounting seats and / or the thickness of the mounting seats. It was made to do.

  And according to this embodiment, for example, the thickness of the mounting seat at a location where the load is likely to concentrate on the armrest, such as the seating position of the occupant, is thinned, or the width of the surrounding notch is set wide. Corresponding to various impact load patterns applied to the armrest, an optimal shock absorption measure can be taken by appropriately adjusting the width dimension and shape of the notch and / or the thickness of the mounting seat.

  As described above, according to the automotive interior part of the present invention, since the armrest is supported by the independent mounting seats divided by the notches, the impact is applied from the side of the vehicle, such as when a side collision occurs. Is applied, the impact load is concentrated on the mounting seat closest to the impact load point, the mounting seat where the impact load is concentrated easily breaks, and the mounting seat adjacent to the chain reaction system breaks. Ripple. Therefore, since the initial reaction force at the time of impact load is small and the mounting seat is broken in a chain reaction manner, the impact load can be effectively absorbed, so that the impact absorption performance can be improved.

  Furthermore, by adopting a structure in which the reinforcing rib is integrated with each mounting seat divided by the notch, the rigidity required for the armrest support can be secured, so even if a downward load is applied to the upper surface of the armrest, There is no bending in the direction, a strong support strength of the armrest is obtained, and the ride comfort can be kept good.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an automobile interior part according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an external view of a door trim showing an embodiment in which an automotive interior part according to the present invention is applied to a door trim, FIG. 2 is a sectional view of a main part showing the configuration of the door trim, and FIG. 3 is an armrest mounting structure in the door trim. FIG. 4 is an explanatory view showing a modification of the mounting structure of the armrest.

  1 and 2, a door trim 10 for an automobile is molded into a required curved surface shape, and is attached to an interior surface side of a door panel via a fixing means such as a clip (not shown), and a surface of the door trim body 20. The armrest 40 is generally configured from an armrest 40 attached to an armrest support portion 30 that is formed in a substantially central portion so as to bulge toward the vehicle interior side.

  More specifically, the door trim main body 20 is composed of a general-purpose synthetic resin injection molded body such as PP resin or ABS resin, a mold press molded body, or the like. The skin can be applied directly or via a cushion layer to enhance cushioning, appearance, and feel.

  The door trim main body 20 may be affixed with an inscribed sheet 21 such as a fabric sheet that further enhances decorativeness on the upper side (inscribed part) of the armrest 40. In addition, a door pocket opening 22 that can accommodate equipment is opened below the armrest support 30, and a speaker grille 23 is provided integrally with the door trim body 20 or separately from the front side of the door pocket opening 22. Yes.

  By the way, the door trim 10 for automobiles according to the present invention has been devised in the mounting structure of the armrest 40, and in particular, even when the long armrest 40 that has left room for improvement in the shock absorbing function is used. An object is to improve the impact absorption performance when an impact load is applied from the side of the vehicle, such as a bump.

  The armrest 40 according to the present embodiment is set in a long shape having a length dimension indicated by L in FIG. 1, but is not limited to the long size type, and can be applied to a general-purpose armrest. . First, the armrest 40 is composed of a synthetic resin injection-molded body. In order to further improve the feel and appearance, the armrest skin is encapsulated on the surface of the synthetic resin molded body via an armrest pad if desired. Anyway.

  Since the configuration of the armrest 40 is not a main part in the present application, a configuration to which a single resin product is applied will be described below. Note that a pull handle 41 is provided substantially at the center of the armrest 40 in the longitudinal direction, and the pull handle 41 is used to open and close the door.

  Next, the mounting structure of the armrest 40 will be described in detail with reference to FIGS. First, mounting bosses 42 are formed on the inner surface of the armrest 40 so as to project at appropriate intervals along the longitudinal direction of the armrest 40.

  On the other hand, the structure of the armrest support part 30 in the door trim main body 20 will be described so as to correspond to the mounting boss 42. First, an opening 30a is formed on the upper surface of the armrest support part 30, and the armrest support part 30 is easily bent by the opening 30a when a side collision occurs. And the mounting seat 31 provided with the mounting hole 32 is provided along the near side edge part of this opening 30a, but this mounting seat 31 is formed in the box shape made into one step from the product surface, Each mounting seat 31 is divided by a notch 33 so that the mounting strength is ensured and an independent form can be taken.

  Further, each mounting seat 31 is integrated so that the reinforcing ribs 34 extend vertically along both side edges thereof, and the reinforcing ribs 35 extend horizontally along the upper edge of the mounting seat 31. So that they are integrated.

  Therefore, in order to attach the armrest 40 to the armrest support portion 30 of the door trim body 20, the armrest 40 is positioned at an appropriate position of the armrest support portion 30, and the mounting boss 42 on the inner surface of the armrest 40 is provided on the armrest support portion 30. Each of the mounting bosses 42 is inserted into the mounting holes 32 of the independent mounting seats 31 and the tip of the mounting boss 42 is ultrasonically welded or thermally welded with the lower edge 40a of the armrest 40 placed on the stepped portion 30b of the armrest support 30. The armrest 40 is attached to the armrest support portion 30 of the door trim main body 20 at a plurality of fixed points that are positioned in a straight line by caulking with the like.

  In this embodiment, when the armrest 40 is attached to the armrest support portion 30 of the door trim main body 20, the mounting seat 31 constituting each support point is divided by the notch 33. When an impact is applied from the outside of the vehicle, an occupant collides with the armrest 40, and in particular, the mounting seat 31 closest to the load point is first deformed and broken. And about the load which continues, an impact load can be absorbed effectively because the adjacent attachment seat 31 breaks | breaks in a chain reaction type | formula on the notch 33 as a boundary.

  As described above, when an impact is applied, the mounting seat 31 closest to the impact load point, that is, the mounting seat 31 of the portion to which the load is applied first is bent and deformed, and the initial reaction force can be effectively reduced. In addition, the mounting seat 31 to which a load is applied is easily broken, and the breakage spreads to the adjacent mounting seats 31 in a chain reaction manner, so that the armrest 40 is detached from the armrest support portion 30 and the armrest support portion 30 is bent. By deforming, the impact load can be absorbed effectively.

  Further, in the present embodiment, the mounting seat 31 is formed in a box shape, the reinforcing ribs 34 are integrated so as to extend vertically on both side edges, and the upper edge of the mounting seat 31 is formed on the upper edge. Since the horizontally extending reinforcing ribs 35 are integrated, if the armrest 40 is mounted and supported on the armrest support 30, the rigidity of the mounting seat 31 itself and the reinforcing ribs 34 against the downward load on the upper surface of the armrest 40. Because the armrest 40 can be reliably supported by the reinforcing effect of, 35, there is no feeling of bottoming when the occupant rests with the armrest 40 resting on the armrest 40. can do.

  Whether the mounting seat 31 of the armrest 40 where the load tends to concentrate is made thinner than the adjacent mounting seats 31 so that it can respond effectively according to various patterns of impact load applied to the armrest 40. Alternatively, by setting the widths of the notches 33 located on both sides of the mounting seat 31 in a portion where load is particularly concentrated, the impact load according to various patterns to which the impact is applied can be effectively controlled. .

  Furthermore, as shown in FIG. 4, for example, by forming the notches 36 on both sides of the tip portion of the notch 33, the breakage of the mounting seat 31 may be more quickly promoted at the time of a side collision, Thus, the shape of the notch 33 can be set to various variations. As the configuration of the door trim main body 20, the integrated door trim main body 20 is employed in the present embodiment, but an upper and lower bipartite structure composed of a door trim upper and a door trim lower may be employed.

  In addition to the door trim 10 described in the embodiment, the present invention can be applied to a mounting structure of an armrest provided in a rear side trim or a luggage side trim of a wagon car or the like. Furthermore, the mounting boss of the armrest is fixed by caulking by ultrasonic welding or heat welding, but can also be mechanically fixed by screw fixing, fixture or the like.

It is an external view which shows the Example which applied the interior component for motor vehicles based on this invention to the door trim. It is sectional drawing which shows the structure of the door trim shown in FIG. It is explanatory drawing which shows the attachment structure of the armrest in the door trim shown in FIG. It is explanatory drawing which shows the modification of the attachment structure of the armrest in the door trim which concerns on this invention. It is an external view which shows the conventional door trim. It is explanatory drawing which shows the attachment structure of the conventional armrest. It is a front view which shows the door trim which provided the conventional elongate armrest. It is sectional drawing which shows the attachment structure of the armrest shown in FIG. It is explanatory drawing which shows the attachment structure of the armrest shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automotive door trim 20 Door trim main body 21 Centering sheet 22 Opening for pocket 23 Speaker grill 30 Armrest support part 30a Opening 30b Step part 31 Mounting seat 32 Mounting hole 33 Notch 34, 35 Reinforcement rib 36 Cutting 40 Armrest 40a Lower edge 41 Pull Handle 42 Mounting boss

Claims (2)

An interior part (10) attached to the interior side of a side wall panel of a vehicle, the interior part (10) being integrally formed with an armrest support (30) that is molded into a required shape and bulges to the interior side. In an interior part (10) for an automobile comprising an interior trim body (20) and an armrest (40) attached to an armrest support (30) of the interior trim body (20).
The armrest support (30) has an opening (30a) on the upper surface, and a plurality of mounting seats (31) are formed in a box shape along the longitudinal direction of the armrest (40). Is supported by the armrest support part (30) at a plurality of attachment points, and a notch (33) for separating adjacent attachment seats (31) is formed. The automobile according to claim 1, wherein reinforcing ribs (34, 35) for enhancing the support strength of the armrest (40) are integrally formed on a side edge and / or an upper edge of the mounting seat (31). Interior parts.

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