JP3557500B2 - Automotive door lining - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a door lining for an automobile which takes measures to reduce an impact at the time of a side collision from the viewpoint of occupant protection.
[0002]
[Prior art]
Generally, an automobile door lining is formed with a lining body formed of a laminated molded body of a lining substrate and a skin material. The lining body is provided with an armrest portion A, a pull pocket portion P and the like as shown in FIG.
[0003]
The lining body is formed such that the lining substrate has a uniform plate thickness of about 2.5 to 3.0 mm and has a unique rigidity as a laminated molded body. Further, since the armrest portion A, the pull pocket portion P, and the like exhibit a rib-like function, the lining body is formed as a structure having rigidity capable of resisting the load of the occupant.
[0004]
The stiffness of the lining body is not preferable in view of the countermeasures against impact in the event of a side collision. In particular, the molded portion of the armrest portion A is structurally high in rigidity, and it is necessary to take measures to alleviate the impact at the time of a side collision from a position located on the side where the occupant is likely to make a collision.
[0005]
Conventionally, as a countermeasure against impact in the event of a side collision, as shown in FIG. Is engraved in a line along the line. According to the notch N, although the breaking strength is reduced, the stress due to the cold shock is locally concentrated on the relevant portion, and the lining substrate is easily broken, so that there is a problem in the merchantability.
[0006]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide an automobile door lining in which a measure for alleviating an impact at the time of a side collision can be achieved by a simple structure change, and an improved door lining in which stress due to cold shock is not locally concentrated.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an automobile door lining having a lining body formed of a laminated molded body of a lining substrate and a skin material, wherein an armrest portion is provided integrally with the lining body. The area from the lower portion of the standing wall portion continuous to the front corner portion of the armrest portion is formed as a thin fragile portion, and the lower portion of the standing wall portion gradually becomes thinner. It is constituted by forming as a gradually changing area.
[0008]
According to a second aspect of the present invention, there is provided an automobile door lining, comprising a laminated molded body of a lining substrate and a skin material, having a lining body assembled from separate upper and lower sides, and an armrest portion. Is provided integrally with the upper side, and while forming an area area from a portion corresponding to a lower portion of the standing wall portion continuous above the armrest portion to a portion corresponding to the front corner portion of the armrest portion as a thin fragile portion, The lower flange portion supporting the lower flange portion of the upper side from behind is formed as a fragile portion having a small thickness.
[0009]
According to a third aspect of the present invention, there is provided an automobile door lining having a lining body formed of a laminated molded body of a lining substrate and a skin material, wherein an armrest portion is provided integrally with the lining body, and a separate pull pocket portion is provided. Is fixed to the upper part of the armrest part, and the area from the lower part of the standing wall part continuous above the armrest part to the front corner part of the armrest part is a thin weak part. It is formed by forming an opening flange portion of an armrest portion for supporting an overhanging flange portion of a pull pocket portion as a thin fragile portion.
[0010]
[Action]
In the automobile door lining according to the first aspect of the present invention, even if the occupant may come into contact with the door lining due to the door panel protruding to the inside of the vehicle due to the side collision or the occupant rolling, Since a large area near the lower portion of the standing wall portion including the armrest portion which is easy to make contact with is formed as a weak portion having a small thickness, it is possible to appropriately take measures for cushioning the occupant. At the same time, since the portion corresponding to the lower portion of the standing wall portion is formed as a gradually changing area where the wall thickness is gradually reduced, the rigidity of the periphery including the armrest portion can be appropriately maintained even if the fragile portion is provided in a wide area.
[0011]
In the vehicle door lining according to claim 2 of the present invention, even when the lining body is assembled from the upper side and the lower side, a wide area corresponding to a lower portion of the upright wall portion including the armrest portion is formed to have a thin and fragile portion. In addition, by forming the lower flange portion as a weak portion on the lower side, the lining body easily collapses between the two due to the impact, and the collapse of the armrest portion can be promoted.
[0012]
In the automobile door lining according to the third aspect of the present invention, even if a separate pull pocket portion is provided in the armrest portion, a wide area area near the lower portion of the standing wall portion including the armrest portion is thin and fragile. In addition, the opening flange of the armrest supporting the overhanging flange of the pull pocket is formed as a weak part, so that the rigidity can be reduced even in the peripheral structure of the armrest including the pull pocket.
[0013]
In addition, in any case, since the area area of the armrest portion is bulged, the impact can be effectively mitigated by deeply sinking or collapsing at the portion. Further, since the fragile portion due to the reduced thickness is provided in at least a large area of the armrest portion, stress due to cold shock does not concentrate on a local portion of the lining substrate, and the lining body can maintain a commercial form. The fragile portion can be easily formed when the lining substrate is injection-molded, thereby reducing material costs and reducing the weight of the lining body.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, with reference to FIGS. 1 to 4, the door lining for an automobile shown in FIG. 1 has a lining body 1 formed of a laminated molded body of a lining substrate 1a and a skin material 1b. The lining substrate 1a is formed by injection molding an ABS resin or a polypropylene resin.
[0015]
As the skin material 1b, a laminated material of polyvinyl chloride and polypropylene foam (PPF), a laminated material of thermoplastic elastomer (TPE) and PPF, or a resin sheet or fabric of TPE, olefin resin, ABS resin, or the like is used. be able to. This skin material 1b can be laminated and adhered to the lining substrate 1a by vacuum molding or the like.
[0016]
In the door lining for an automobile, the lining body 1 is formed by combining the upper side 10 and the lower side 11. On the upper side 10, an armrest portion 12 is formed so as to be integrally bulged with its longitudinal direction positioned in the front-rear direction of the vehicle door lining. A pull pocket portion 13 is provided in the armrest portion 12 by being fitted and fixed in an opening (not shown) provided in an upper surface portion.
[0017]
In the door lining for automobiles, measures to reduce the impact are taken at the molding portion of the armrest portion 12 where the occupant easily comes into contact with a side collision. As the shock mitigation, relatively thinned fragile portion the wall thickness of the lining substrate 1a than the general portion t ₁ of the lining body 1 formed thickness of about 2.5~3mm as shown in Figure 2 This is illustrated in FIG. The fragile portion 2 can be molded simultaneously with the injection molding of the lining substrate 1a.
[0018]
Area of weakness portion 2 and the upper surface corresponding parts t ₂ of the door arm rest 12, a lower near-corresponding portion t ₃ of the upright wall portion 14 continuous to the upper side of the armrest portion 12, a front corner portion corresponding parts t ₄ of the armrest 12 It is provided over the area. The fragile portion 2 is formed so as to cover the entire width of the armrest portion 12 in the longitudinal direction.
[0019]
Among the various parts, from the top surface corresponding parts t ₂ of the armrest portion 12 to the front corner portion corresponding parts t ₄ is formed in a thickness of about 1.5 mm. The lower nearer corresponding parts _{t 3} is the thickness toward the upper surface corresponding parts _{t 2} of the armrest 12 generally made part _{t 1} to a thickness of about 1.5mm with a thickness of about 2.5mm of the vertical wall portion 14 Is formed as a gradually changing area w which is gradually thinned.
[0020]
This automotive door lining is provided with a fastener such as an anchor clip on an inner surface facing the door panel, and the fastener is press-fitted into a fitting hole provided in the door inner panel to be fixedly mounted as an interior member of the door panel. You can do it. In this mounted state of the door lining, the fragile portion 2 is located on the inner surface side of the door lining body 1 facing the door panel.
[0021]
In the car door lining, even if the lining body 1 protrudes toward the inside of the vehicle due to a side collision or the occupant rolls and hits the lining body 1, the armrest portion 12 corresponds to the lower part of the standing wall portion 14. portion t ₃ to become easily deflected by depression deformed or broken so fragile portion 2 between the front corner portion corresponding parts t _4. At the same time, since the armrest portion 12 is largely bulged and formed, the armrest portion 12 can sufficiently absorb the impact applied to the occupant due to the depression and deformation of the armrest portion 12 with a certain stroke.
[0022]
In the automobile door lining, since the fragile portion 2 is provided in a wide area, it is possible to prevent the pressure due to the cold resistance from being locally concentrated, thereby preventing the lining substrate 1a from being cracked. In addition, because lower closer substantial portion t ₃ of the upright wall portion 14 is formed as a gradually thinner gradually changing area w of thickness, it is provided with a fragile portion 2 in a large area region, the armrest 12 The rigidity of the surrounding area can be kept moderate.
[0023]
When the lining body 1 is assembled from the separate upper side 10 and lower side 11, the lower side 11 supporting the lower flange portion 10a of the upper side 10 from behind as shown in FIG. The upper flange portion 11a may also be formed as the fragile portion 3. When the fragile portion 3 is provided, the upper side 10 is easily detached from the lower side 11 with a side collision, so that the armrest portion 12 can be encouraged to be depressed and deformed.
[0024]
In the case where the pull pocket portion 13 is provided, as shown in FIGS. 3 and 4, the opening flange portions 12 a and 12 b of the armrest portion 12 supporting the projecting flange portions 13 a and 13 b of the pull pocket portion 13 are formed as weak portions 4 and 5. Good to do. By providing the fragile portions 4 and 5, the rigidity can be reduced even in the peripheral structure of the armrest portion 12 including the pull pocket portion 13.
[0025]
In the armrest 12, to form a general portion t ₁ as shown in FIG. 3 in the thickness of about 2.5 mm, the side _{t 5} the thickness of about 2.0 mm, the upper surface corresponding parts _{t 2} (FIG. 4 the upper surface corresponding parts _{t 2} be the same thickness) as the thickness of about 1.5mm indicated, the opening flange portion 12b indicated by the opening flange portion 12a (FIG. 4 also may be formed of the same thickness) to the thickness of about 1.0mm .
[0026]
【The invention's effect】
As described above, according to the vehicle door lining according to the present invention, the area including at least the armrest portion is formed as a thin fragile portion having a thickness of about 50 to 60% with respect to the general portion of the lining body. As a result, the armrest portion is easily depressed and deformed or the structure collapses, so that the impact can be surely reduced. At the same time, it is possible to prevent the stress due to the cold shock resistance from being locally concentrated, and the cracks due to the stress concentration do not occur in the lining substrate, so that the commerciality can be reliably maintained.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a basic structure of an automobile door lining according to the present invention.
FIG. 2 is a partial cross-sectional view showing the automobile door lining of FIG. 1 along a line AA.
FIG. 3 is a partial cross-sectional view showing the automobile door lining of FIG. 1 along a line BB.
FIG. 4 is a cross-sectional view showing the automobile door lining of FIG. 1 along the line CC.
FIG. 5 is an explanatory view showing an entire structure of a door lining for a vehicle according to a general example.
FIG. 6 is a partial cross-sectional view showing an automobile door lining according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lining main body 10 Upper side 10a of lining main body Lower flange part 11 of upper side 11 Lower side 11a of lining main body Upper flange part 12 of lower side 12 Armrest parts 12a and 12b Opening flange part of armrest part 13 Pull pocket part 14 Standing wall of lining body Part 2, 3, 4, 5 Fragile part w Slowly changing area t ₁ General part of lining body t ₂ Part corresponding to upper surface of armrest part t ₃ Part corresponding to lower side of standing wall part t ₄ Corresponding to front corner of armrest part part

Claims (3)

An automobile door lining having a lining body (1) formed of a laminated molded body of a lining substrate (1a) and a skin material (1b), and an armrest portion (12) provided integrally with the lining body (1). The area from the lower portion (t ₃ ) of the standing wall portion (14) continuous above the portion (12) to the front corner portion (t ₄ ) of the armrest portion (12) is reduced in thickness to the weakened portion. (2) A door lining for an automobile, wherein a portion (t ₃ ) closer to the lower portion of the upright wall portion (14) is formed as a gradually changing area (w) having a gradually decreasing wall thickness. An armrest portion which is a laminated molded body of a lining substrate (1a) and a skin material (1b), and has a lining body (1) assembled from a separate upper side (10) and a lower side (11); (12) In the door lining for automobiles provided integrally with the upper side (10), the armrest portion (12) extends from a portion (t ₃ ) closer to the lower portion of the standing wall portion (14) continuous above the armrest portion (12). The area area up to the front corner portion (t ₄ ) of the lower side (11) is formed as a thin brittle portion (2), and the lower side (11) supporting the lower flange portion (10a) of the upper side (10) from behind. 3.) A door lining for an automobile, wherein the upper flange portion (11a) is formed as a weak portion (3) having a small thickness. It has a lining body (1) which is a laminated molded body of a lining substrate (1a) and a skin material (1b), an armrest portion (12) is provided integrally with the lining body (1), and a separate pull pocket portion In a door lining for an automobile in which (13) is fitted and fixed to the upper surface of the armrest portion (12), the armrest starts from a portion (t ₃ ) closer to the lower portion of the standing wall portion (14) that is continuous above the armrest portion (12). The area area up to the front corner portion (t ₄ ) of the portion (12) is formed as a thin fragile portion (2) and supports the projecting flange portions (13a, 13b) of the pull pocket portion (13). A door lining for an automobile, characterized in that the opening flange portions (12a, 12b) of the armrest portion (12) to be formed are formed as thin fragile portions (4, 5).

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