JP2008201193A - Armrest for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance side collision performance of an armrest for vehicle installed in an interior trimming part attached to a side wall panel of the vehicle. <P>SOLUTION: The armrest 30 comprises an armrest core material 40, an armrest pad 50, and an armrest surface skin 60. In the armrest core material 40, by providing a step 45 along a division line for dividing the armrest core material 40 in the vehicle width direction, a crushable structure is adopted, thereby inducing buckling deformation of the armrest core material 40 during a side collision, and enhancing impact absorbing performance. Further, as a structure of the armrest pad 50, division pads 51, 52 made of slab urethane are also provided. By a position restricting action of the step 45 and spot bonding only on both ends of the armrest pad 50, restrain from the armrest pad 50 is released during a collision, and buckling deformation of the armrest core material 40 is made smooth. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle armrest mounted on an interior part of an automobile such as a door trim, a rear side trim, a luggage side trim, and the like on a vehicle side wall panel. The present invention relates to a vehicle armrest.

  Normally, interior parts for automobiles such as door trims, rear side trims, and luggage side trims are installed on the interior side of the side wall panel of the vehicle to enhance the aesthetics of the interior of the vehicle and to the side of the vehicle when a side collision occurs. When an impact load from the vehicle is applied, 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. 11 shows a conventional door trim 1. The door trim 1 is mounted on and fixed to a door trim main body 2 and an armrest support portion 3 formed in a central portion of the door trim main body 2 so as to bulge indoors. 4.

  As shown in FIGS. 12 and 13, the armrest 4 is formed by injection molding synthetic resin into a required shape so as to include an attaching means for the armrest support portion 3 of the door trim main body 2. And an armrest pad 6 which is placed on the upper surface of the armrest core 5 and has a cushioning property fixed by a double-sided adhesive tape or the like, and an armrest skin 7 made of a soft resin injection-molded body covering the outer surface thereof. It is configured. The configuration of this kind of armrest 4 is described in detail in Patent Document 1.

Japanese Patent Application Laid-Open No. 2004-345566

  Thus, the structure of the conventional armrest 4 is configured by placing the armrest pad 6 on the armrest core material 5 made of an injection molded body of synthetic resin and encapsulating the outer surface with the armrest skin 7. There is a drawback that the armrest core material 5 has high rigidity, and the initial reaction force at the time of a side collision is high.

  Furthermore, since the armrest pad 6 is bonded to the entire upper surface of the armrest core material 5 with the double-sided adhesive tape, the armrest pad 6 also inhibits the armrest core material 5 from being bent and deformed at the time of a side collision. It is a factor to raise. In addition, when the armrest pad 6 is bonded to the entire surface, it is pointed out at the same time that the deformation stroke of the armrest core material 5 does not extend because there is a residual crush in a wide range of impact load at the time of a side collision. .

  The present invention has been made in view of such circumstances, and can suppress an initial reaction force at the time of a side collision, can secure a deformation stroke amount in a wide range, and can obtain an excellent shock absorbing performance. An object is to provide an armrest.

  In order to solve the above-mentioned problems, the present inventors, as a result of intensive research, adopted a crushable structure for the armrest core material, and in addition to that, spot-fixed the armrest pad to be placed and fixed on the armrest core material. Focusing on the fact that good shock absorbing performance can be obtained, the present invention has been completed.

  That is, the present invention provides a vehicle armrest having a shock absorbing function at the time of a side collision, which is mounted on the interior surface side of an automobile interior part mounted on the interior surface side of a vehicle side wall panel. The armrest core material provided integrally with or separately from the armrest core material, laminated on the upper surface of the armrest core material, and provided with cushioning properties, and the armrest skin covering the outer surface of the armrest pad, The pad support plate part in the armrest core material is divided into a panel side support part and an indoor side support part, and a step is provided in the dividing line. It features a crushable structure to induce.

  Here, the interior parts for automobiles can be applied to luggage side trims such as door trims, rear side trims, and wagon cars attached to the interior side of the side wall panel of the vehicle. Furthermore, the interior trim main body in the interior parts for automobiles is formed by using a single resin product such as a synthetic resin mold press molded body or an injection molded body, or molded into a required shape by mold press molding, injection molding or the like. It is also possible to use a laminated molded product obtained by attaching a skin to the surface of the resin core material.

  Next, the vehicle armrest that exhibits an excellent shock absorbing function at the time of a side collision is provided as an integral part of the interior trim body or separately, and provides an armrest core material having the strength to hold the shape of the armrest, and cushioning Armrest pads, and armrest skins that are excellent in appearance and touch feeling and enveloping their outer surfaces. When the interior trim body and the armrest core material are separate, the armrest core material is attached to the interior trim body via conventional attachment means such as a clip.

  The material of the armrest core material is polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol resin, vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, ionomer. Resin, acrylonitrile / butadiene / styrene (ABS) resin, and the like. Then, the synthetic resin is molded into a required shape by injection molding. Furthermore, the present invention is characterized by adopting a crushable structure for the armrest core material. For this purpose, the pad support plate portion in the armrest core is divided into two in the vehicle width direction and divided into a panel side support portion and an indoor side support portion, and a step is provided along the division line. Therefore, during a side collision, stress concentrates on this step, and the armrest core material is easily buckled and deformed in a double shape, and it is possible to suppress an increase in the initial reaction force and to secure a large amount of deformation stroke. .

  Next, as the armrest pad, a molded product such as urethane foam, slab urethane or the like can be used. If cost is taken into consideration, it is better to use plate-like armrest pads such as slab urethane, and when plate-like armrest pads are used, the panel-side support part and the indoor-side support part of the pad support plate part in the armrest core material Since there is a difference in level and there is a difference in the vertical position, the surface position of the armrest pad can be made flush by making the thickness of the armrest pad different. In addition, when a plate-shaped armrest pad is used, the position of the armrest pad is restricted by the stepped portion, so that the armrest pad is not bonded to the entire surface but is partially bonded, for example, spot bonding, such as bonding at both ends. It is possible to securely fix without fixing. Therefore, when the armrest pad is partially bonded rather than fully bonded, the armrest pad does not disturb the bending deformation of the armrest core material at the time of a side collision, so that the side collision performance is excellent.

  Next, as long as the armrest skin covers the surface of the product, a fabric sheet, a synthetic resin sheet, or the like can be applied. However, when terminal treatment is taken into consideration, a soft resin such as a soft PVC resin or a thermoplastic is available. An armrest skin obtained by molding a soft material such as an elastomer resin or a rubber material into a required shape by injection molding is preferable. When the armrest skin is formed of a soft resin, if the hook for locking to the peripheral portion of the armrest core material is formed integrally with the peripheral end along the peripheral portion, the hook for the armrest is formed. By fitting into the material, the end treatment of the armrest skin can be easily performed, the surface feel and formability can be improved, and the end treatment can be easily performed.

  In particular, when using a soft resin injection-molded body as the armrest skin, and when using a plate-like armrest pad, the product surface of the armrest is rounded in terms of touch or design, A space is formed between the periphery of the armrest pad and the periphery of the product, but if a large number of spacer ribs are integrally formed on the inner surface of the periphery of the armrest skin so as to match this space, the peripheral portion may become sticky. In addition, the shape retention of the outer peripheral edge can be improved.

  Therefore, the vehicle armrest according to the present invention employs a crushable structure in which a step is provided in the armrest core material, thereby suppressing an initial reaction force at the time of a side collision and easily buckling with this stepped portion as a base point. Deformation can be induced, a sufficient amount of deformation stroke can be secured, and good shock absorption performance can be obtained. Furthermore, when the plate-shaped armrest pad is used by effectively using the step of the armrest core material, partial bonding is sufficient by regulating the position at the step, so that the mounting operation of the armrest pad can be simplified and the side collision At this time, the armrest pad does not hinder the bending deformation of the armrest core material, and a sufficient amount of deformation stroke at the time of a side collision can be secured.

  In addition, when a soft resin injection-molded body is used as the armrest skin and slab urethane is used as the armrest pad, the shape retention of the peripheral portion is enhanced by providing a plurality of spacer ribs on the inner peripheral surface of the armrest skin, and The shape of the armrest pad can be simplified.

  As described above, the vehicle armrest according to the present invention is a vehicle armrest having a side-impact absorbing performance that is provided at the approximate center of the surface of an automotive interior part attached to the indoor surface side of the side wall panel. As the structure of the core material, the pad support plate part is divided into two in the vehicle width direction, and a step is provided between the panel side support part and the indoor side support part, and this step induces buckling deformation at the time of side collision. Since the crushable structure that can be used is employed, the impact absorbing performance at the time of a side collision can be improved.

  Furthermore, in the vehicle armrest according to the present invention, if the plate-like armrest pad is divided and installed on the panel side support portion and the indoor side support portion of the armrest core material, the step has a position regulating action. Since it is sufficient to perform spot bonding to the core material at both ends in the longitudinal direction, the armrest pad does not restrain the armrest core material during a side collision, and the armrest core material is free to buckle and deform. And, it has an effect that good shock absorbing performance can be obtained.

  Furthermore, in the vehicle armrest according to the present invention, the armrest skin is made of a soft resin injection-molded body, and if a large number of spacer ribs are integrally formed on the inner periphery of the armrest, the shape retention of the periphery of the armrest is improved. In addition, the touch when touched is good, and the shape of the armrest pad can be simplified.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a vehicle armrest according to the present invention will be described in detail with reference to the accompanying drawings. Note that the gist of the present invention is as described in the scope of claims, and the contents of the embodiments described below are merely examples of the present invention.

  1 to 7 show a first embodiment of the present invention. FIG. 1 is an external view showing an automobile door trim equipped with a vehicle armrest according to the present invention, and FIG. 2 is a view of the vehicle armrest according to the present invention. FIG. 3 is a front view of the armrest for the vehicle, FIG. 4 is a cross-sectional view showing the structure of the armrest for the vehicle, and FIG. FIG. 6 and FIG. 7 are cross-sectional views showing modifications of the vehicle armrest according to the present invention.

  In FIG. 1, an automotive door trim 10 is provided with a vehicle armrest 30 at the approximate center of the surface of a door trim body 20. More specifically, an armrest support portion 21 that bulges indoors is formed substantially at the center of the surface of the door trim main body 20, and the armrest 30 is placed and fixed on the upper surface of the armrest support portion 21. The door trim body 20 is composed of a synthetic resin mold press-molded body, an injection-molded body, etc., and usable resin materials include polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol. Resin, vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, ionomer resin, acrylonitrile / butadiene / styrene (ABS) resin, and the like. Further, if desired, the door trim body 20 can use a laminated structure in which the skin is integrated with the surface of the resin core material. A pocket unit 22 integrated with a speaker grill is mounted on the lower side of the door trim main body 20. Here, the present invention is characterized by the configuration of the vehicle armrest 30 having excellent shock absorption performance, and the door trim main body 20 is not a main part configuration. Presence / absence can be changed as appropriate.

  Next, the configuration of the vehicle armrest 30 will be described with reference to FIGS. In the present embodiment, the use form of the multifunctional armrest that accommodates the pull handle and the power window switch unit has been described. However, the present invention can be applied to a single armrest. The armrest 30 is generally composed of an armrest core member 40, an armrest pad 50, and an armrest skin 60.

  More specifically, since the armrest core member 40 is the multi-functional armrest 30 as described above, the switch support unit 41 includes a pad support plate part 41 and a pull handle part 42 that support the armrest pad 50, and a switch unit (not shown). The armrest core member 40 is provided with a locking claw 44 that is engaged with a locking hole (not shown) of the armrest support 21 at an appropriate pitch interval on the lower side. In particular, in the present invention, the pad support plate portion 41 is divided into two along the vehicle width direction, and a step 45 is formed at the boundary portion, thereby partitioning into a panel side support portion 41a and an indoor side support portion 41b. Has been. And the rigidity is lowered by this step 45, and this step 45 becomes a base point at the time of a side collision, induces buckling deformation of the pad support plate part 41, suppresses initial reaction force, and can secure a large amount of deformation stroke, etc. The crushable structure is adopted. In this embodiment, the armrest core member 40 and the door trim main body 20 are separated from each other. However, an integrated structure of the armrest core member 40 and the door trim main body 20 may be employed.

  In this embodiment, a plate-like armrest pad 50 made of slab urethane is used on the upper surface of the pad support plate portion 41 of the armrest core member 40 to provide cushioning properties. The armrest pad 50 also uses a split pad for the panel side pad 51 and the indoor side pad 52 because the panel 40 is divided into the panel side support part 41a and the indoor side support part 41b by the step 45 of the material 40. As shown by 4, the thickness is changed by the dimension of the step 45 so that the upper surfaces of the panel side pad 51 and the indoor side pad 52 are flush with each other. That is, the thickness of the indoor side pad 52 is set to a thickness obtained by stacking the dimensions of the step side 45 on the thickness of the panel side pad 51. The armrest pad 50 is not partially bonded to the panel side support portion 41a and the indoor side support portion 41b of the armrest core member 40, but is partially fixed by spot bonding. For example, it is possible to fix the panel-side pad 51 and the indoor-side pad 52 only at both ends in the longitudinal direction or, if desired, a total of three spots including one central portion. This is because the step 45 provided in the armrest core member 40 has a position regulating function such as supporting the side edge of the indoor pad 52 in this embodiment and preventing positional deviation, and so on. Adhesive means will suffice.

  Next, the armrest skin 60 that forms the product surface of the armrest 30 is made of a synthetic rubber-based material such as soft vinyl chloride resin, thermoplastic elastomer resin, EPDM, or the like, and is molded into a required shape by injection molding. In this embodiment, in order to correspond to the multifunctional armrest 30, an opening 61 is formed so as to surround the pull handle portion 42 and the switch unit housing portion 43 provided in the armrest core member 40, and the armrest skin 60. A hook 62 for locking is formed at the peripheral edge of the peripheral edge of the armrest, and the terminal processing of the armrest skin 60 is performed by engaging the hook 62 for locking with the peripheral edge of the armrest core member 40 as shown in FIG. Has been done.

  As described above, the armrest 30 for a vehicle according to the present invention is provided with the dividing line and the step 45 that are divided into two along the vehicle width direction on the armrest core member 40, and buckles with the step 45 as a base point at the time of a side collision. Since a crushable structure that induces deformation is employed, it is possible to suppress the initial reaction force and to secure a large amount of deformation stroke.

  The armrest pad 50 is configured such that a panel-side pad 51 made of a separate plate-like slab urethane and an indoor-side pad 52 are mounted on the panel-side support portion 41a and the indoor-side support portion 41b of the armrest core member 40, respectively. Since the spot bonding is performed in consideration of the position regulating function of the step 45, as shown in FIG. 5, for example, the effect of the shock absorbing function when the armrest pad 50 is bonded to the entire surface and when both ends are bonded is shown. In comparison, when both ends are bonded, the initial reaction force can be suppressed and a large amount of deformation stroke can be secured. This is considered because the armrest pad 50 does not disturb the buckling deformation at the time of the side collision of the armrest core member 40.

  As described above, the use of the crushable structure for the armrest core member 40 and the use of the slab urethane divided body as the armrest pad 50 reduce the cost, and the length of the panel side pad 51 and the indoor side pad 52 is longer. Since the configuration in which both ends in the direction are bonded and fixed is adopted, the armrest pad 50 does not interfere with the buckling deformation of the armrest core member 40 at the time of side collision, and excellent shock absorbing performance at the time of side collision can be obtained. Further, there is an advantage that the terminal processing can be easily performed by using a soft resin injection molded body as the armrest skin 60.

  Next, FIG. 6 and FIG. 7 show a modification of the present invention. As shown in FIG. 6, if a locking rib 46 is formed on the pad support plate portion 41 of the armrest core member 40, this locking Since the rib 46 bites into the panel side pad 51 and the indoor side pad 52, it is possible to reliably prevent the positional deviation. In addition, as shown in FIG. 7, a molding pad 53 can be used as the armrest pad 50. When the molding pad 53 is used, the cost is high and the side collision performance is inferior to the case of using the slab urethane divided pads 51 and 52, but there is an advantage that the touch and shape retention are excellent. is there.

  8 to 10 show a second embodiment of the present invention, which is the same as the first embodiment in that the present invention is applied to a multifunctional armrest equipped with a unit. Therefore, as shown in FIG. 8, the armrest core member 40 and the armrest pad 50 in the vehicle armrest 30 </ b> A according to the second embodiment (the plate-like divided pads of the panel side pad 51 and the indoor side pad 52 are used). Since this is the same as that of the first embodiment, the configurations of the armrest core member 40 and the armrest pad 50 are omitted here.

  The second embodiment is characterized in that the configuration of the armrest skin 60 is improved. That is, the armrest skin 60A in the vehicle armrest 30A is made of an injection-molded body made of a soft material, and has an opening 61 and a locking hook 62 formed on the periphery thereof. As shown in the enlarged view of FIG. 9 and FIG. 10, a large number of sheets are formed at appropriate pitch intervals. The spacer ribs 63 are formed on the rear side edge and the indoor side edge of the armrest pad 50. When plate-shaped divided pads 51 and 52, which are inexpensive, are used, the product surface has a rounded corner. Since there is a gap between the armrest pad 50 and the inner surface of the armrest skin 60A at the rear side edge and the indoor side edge of the armrest 30A, since the spacer rib 63 fills this gap, It is possible to improve the shape-retaining property and maintain the appearance shape well. And by effectively utilizing the spacer rib 63, the dimensions and shape of the armrest pad 50 can be simplified, which helps to reduce the cost.

  The first embodiment and the second embodiment described above are both applied to the configuration of the multifunctional armrests 30 and 30A, but can also be applied to the configuration of a single armrest type. Furthermore, as the armrest pad 50, a molding pad 53 can be used in addition to a configuration in which the inexpensive slab urethane panel side pad 51 and the indoor side pad 52 are placed in parallel. In addition to the door trim 10, the armrest structure according to the present invention can be applied to a rear side trim or a luggage side trim of a wagon car or the like.

It is an external view which shows the door trim for motor vehicles equipped with the armrest for vehicles which concerns on this invention. It is a disassembled perspective view which shows the structure of 1st Example of the armrest for vehicles which concerns on this invention. It is a front view of the armrest for vehicles shown in FIG. It is sectional drawing which shows the structure of the armrest for vehicles shown in FIG. It is a graph which compares and shows the side collision performance in the both ends adhesion | attachment of the armrest and the whole surface adhesion in the armrest for vehicles shown in FIG. It is sectional drawing which shows the modification of the armrest for vehicles shown in FIG. It is sectional drawing which shows the further modification of the armrest for vehicles shown in FIG. It is a disassembled perspective view which shows the structure of 2nd Example of the armrest for vehicles which concerns on this invention. It is the perspective view which looked at the armrest skin in the armrest for vehicles shown in FIG. 8 from the inner surface side. It is sectional drawing which shows the structure of the armrest for vehicles shown in FIG. It is an external view which shows the door trim equipped with the conventional armrest for vehicles. It is a disassembled perspective view which shows the structure of the conventional armrest for vehicles. It is sectional drawing which shows the structure of the conventional armrest for vehicles.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car door trim 20 Door trim main body 21 Armrest support part 22 Pocket unit 30, 30A Vehicle armrest 40 Armrest core material 41 Pad support board part 41a Panel side support part 41b Indoor side support part 42 Pull handle part 43 Switch unit accommodating part 44 Engagement Pawl 45 Step 46 Locking rib 50 Armrest pad 51 Panel side pad 52 Indoor pad 60, 60A Armrest skin 61 Opening 62 Locking hook 63 Spacer rib

Claims (4)

In the vehicle armrest (30), which is installed at the approximate center of the surface of the automobile interior part (10) attached to the interior surface side of the side wall panel of the vehicle and has a shock absorbing function at the time of a side collision,
The armrest (30) is an armrest core (40) provided integrally with or separately from the interior trim body (20), and an armrest pad that is laminated on the upper surface of the armrest core (40) and provides cushioning properties. (50) and an armrest skin (60) covering the outer surface of the armrest pad (50), and the pad support plate (41) in the armrest core (40) has a panel side support (41a). ) And the indoor side support part (41b), and a step (45) is provided on the dividing line, and at the time of a side collision, the buckling deformation of the armrest core (40) is induced with the step (45) as a base point. The armrest for vehicles is characterized by adopting a crushable structure.   The armrest pad (50) includes a panel side pad (51) so as to correspond to the panel side support portion (41a) of the pad support plate portion (41) and the indoor side support portion (41b) of the armrest core member (40). And the interior side pad (52), and the pads (51, 52) have different thicknesses so as to absorb the dimensional difference of the step (45) in the armrest core (40). The vehicle armrest according to claim 1, wherein the surface of the pad (51) and the indoor side pad (52) are flush with each other.   The panel-side pad (51) and the indoor-side pad (52) in the armrest pad (50) are respectively long on the upper surfaces of the panel-side support portion (41a) and the indoor-side support portion (41b) of the armrest core member (40). The vehicle armrest according to claim 2, wherein the direction terminal portion is spot-bonded and fixed.   A large number of spacer ribs (63) are formed on the inner peripheral surface of the armrest skin (60), thereby simplifying the shape of the peripheral portion of the armrest pad (50) and maintaining the shape of the product peripheral portion. The vehicle armrest according to claim 2, wherein the vehicle armrest is provided.

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