JP2009241920A - Interior trim part of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain, for a long period, the effect of preventing the noise generated owing to the friction between an interior trim part for an automobile and a cabin. <P>SOLUTION: Projections 61 pressed against the wall 33 is projected from the body 60 of the interior trim part such as a height increasing member and a tibia pad toward the wall 33 of the cabin 3. A cloth body 2 is attached to at least the end surface 62 of each of the projections 61. The area of the end surface 62 to which the cloth body 2 is attached is formed in a sloped surface 63 or an arcuate surface 64 extending from the upper part to the inner lower side. Since the area to which the cloth body 2 is attached is formed in the sloped surface 63 or the arcuate surface 64, and smoothly arranged continuously, the cloth body 2 is raised, the possibility of occurrence of the raising, wrinkles, or displacement of the cloth body 2 is reduced. Consequently, a working efficiency when the cloth body 2 is mounted is improved. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a raising material for setting a floor surface of a passenger compartment of an automobile to be high in accordance with a side sill, and an automobile interior part such as a tibia pad used for a footrest of a driver's seat.

Raising materials and tibia pads are used as automotive interior parts.
FIG. 7 is a perspective view showing a passenger compartment (3) of a conventional automobile, and FIG. 8 is an enlarged perspective view of a portion surrounded by a circle B in FIG. In the passenger compartment (3), a pair of left and right front seats (30) are provided on the floor (4), a rear seat (31) is provided on the rear portion thereof, and the upper surface of the floor (4) is raised as described later. A material (1) is placed, and a carpet (5) is laid on the raising material (1).
As shown in FIG. 8, depending on the type of automobile, the side sill (32) located at the lower part of the door (not shown) opening is higher than the indoor floor (4) surface (for example, the vehicle compartment ( (3) When the right side sill (32) has a high height H), the rear seat (31) passenger must straddle the side sill (32) when getting on and off the vehicle. . Further, there is a case where the seating surface is set high for the purpose of obtaining a forward view with a feeling of opening by increasing the line of sight of the occupant of the rear seat (31). In such a case, if a floor (4) having a different height for each vehicle type is designed, a very large number of manufacturing steps are required.

Therefore, the conventional floor (4) is used as it is, and a method of obtaining a high floor surface without changing the vehicle floor structure by placing a raising material such as a urethane pad on the upper surface of the floor (4). ing.
FIG. 9 is a cross-sectional view of the floor surface of FIG. 8 taken along the vertical plane including the line XX and viewed from the direction of the arrow. As shown in FIG. 8, a foaming resin raising material (1) is placed on the upper surface of the floor (4) at the foot of the occupant between the front seat (30) and the rear seat (31). A carpet (5) is laid on the top (see Patent Document 1). As a result, the floor (4) is shared by each vehicle type, and a high floor surface is obtained.
Further, as a footrest for an occupant of the front seat (30), a tibia pad (6) made of foamed resin as shown in FIG. 10 is provided in the passenger compartment (3) (see Patent Document 2). As the foamed resin, for example, a foamed resin of a styrene-modified polyethylene resin is used.

FIG. 11 is a plan view of a conventional raising material (1). When the raising material (1) is mounted in the passenger compartment (3), the entire side surface (12) of the main body (10) of the raising member (1) is bent and deformed, and the elastic force is applied to the passenger compartment (3). Was pressed against the wall (33). That is, the main body (10) was press-fitted into the passenger compartment (3).
However, due to the dimensional accuracy of the main body (10), when the load that the raising member (1) presses against the wall (33) is small, the raising member (1) is fixed in the passenger compartment (3) while the automobile is running. Without maintaining the state, the entire side surface (12) of the main body (10) may rub against the wall (33) of the passenger compartment (3). Further, when the dimensional accuracy of the main body (10) is low, the main body (10) may not be sufficiently mounted in the passenger compartment (3) and may float from the bottom of the passenger compartment (3). While traveling, the side surface (12) of the main body (10) rubs against the wall (33) of the passenger compartment (3). Such friction causes an abnormal noise such as a squeak noise in the passenger compartment (3). The same problem occurs not only with the raised material (1) but also with the tibia pad (6).
In view of this point, as shown in FIG. 12, the protrusion (11) protruding from the side surface of the main body (10) is provided, the protrusion (11) pressing against the wall (33) of the passenger compartment (3) is protruded, There has been proposed a structure in which a coating layer (19) made of acrylic modified silicone resin having a thickness of 0.1 μm to 10 μm and relaxing friction with the wall (33) is provided at the tip of the protrusion (11) ( (See Patent Document 3). By pressing the projection (11) against the wall (33), the contact area of the wall (33) is reduced, and abnormal noise such as squeak noise is reduced. In addition, by reducing the friction with the wall (33) by the coating layer (19), abnormal noise such as squeak noise is reduced.

JP 2000-280809 A JP 2007-98964 A JP-A-7-246888

In the content disclosed in Patent Document 3, since the coating layer (19) is a thin film having a thickness of 0.1 μm to 10 μm, the wall (33) of the passenger compartment (3) and the coating layer are traveling while the vehicle is running. By rubbing with (19), the coating layer (19) may be peeled off, and when used over a long period of time, the effect of preventing abnormal noise may be lost.
An object of the present invention is to keep the effect of preventing abnormal noise due to friction between automobile interior parts and a passenger compartment for a long time.

  A protrusion (61) that presses against the wall from the body (60) of the automobile interior part to the wall of the passenger compartment (3) is provided, and at least the tip surface (62) of the protrusion (61) is caused by friction with the wall. A cloth body (2) for noise reduction is attached. On the tip end face (62) of the protrusion (61), the place where the cloth body (2) is attached forms a slope (63) or a circular arc face (64) extending inward and downward from the upper part.

1. In the invention according to claim 1, by attaching the cloth body (2) to the front end surface (62) of the protrusion (61) of the body (60) of the automobile interior part, the cloth body (2) serves as a cushioning material. Further, abnormal noise due to friction between the protrusions (61) and (61) can be suppressed. The cloth body (2) is sufficiently thicker than the conventional coating film layer (19), and even if the cloth body (2) rubs against the wall and causes friction, the amount of the cloth body (2) to be worn away is very small. is there. That is, the effect of preventing noise due to friction between the main body (60) and the wall (33) of the passenger compartment (3) can be maintained for a long time.
2. In the invention according to claim 2, the tip end surface (62) of the protrusion (61) forms a slope (63) or an arcuate surface (64) extending inward and downward from the upper part. If the tip surface (62) is a stepped portion, the cloth body (2) is lifted or wrinkled or misaligned when the cloth body (2) is attached, and the workability of attaching the cloth body (2) is improved. bad. In the present invention, the cloth body (2) is attached to the inclined surface (63) or the circular arc surface (64), and is smoothly continuous. Therefore, the cloth body (2) may float or wrinkles or misalignment may occur. This is alleviated and the workability of attaching the cloth body (2) is improved.

(First embodiment)
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view of an automobile interior part, specifically, a raising material (1) in this example, and FIG. 2 is a front view of the raising material (1) of FIG. . In this example, for the convenience of explanation, the raising material (1) is illustrated as an automobile interior part, but a tibia pad may be used.
The raising material (1) is formed of a foamed resin of a composite resin of polystyrene and polyolefin, as in the prior art. The thickness of the raising material (1) is 1-20 cm, and the thickness is determined by the vehicle type to be raised.
As shown in FIG. 1, protrusions (11) and (11) for pressing the wall (33) from the side surface of the body (10) of the raising material (1) toward the wall (33) of the passenger compartment (3) are provided. It protrudes. The protrusions (11) and (11) are provided integrally with the main body (10), and the tip surface (16) of each protrusion (11) and (11) has a cloth body (felt, nonwoven fabric, etc.) as shown in FIG. 2) is pasted. The cloth body (2) may be affixed to a part of the front end surface (16) or may be affixed to the entire surface.
When the main body (10) is mounted in the passenger compartment (3), the protrusions (11) and (11) are pressed and deformed by about 0.5 to 1 cm, so that the cloth body (2) becomes the Press contact with the wall (33). This pressure deformation includes the case where the main body (10) and the protrusions (11) and (11) are soft and the restoring force due to elastic deformation is weak, and the case where the main body (10) and the protrusions (11) and (11) are rigid and restored due to compression deformation. Includes both cases where the force is strong. Expandable polyethylene or polypropylene can be used as the resin when the main body (10) and the protrusions (11) and (11) are soft, and expandable polystyrene is used as the resin when the main body (10) and the protrusions (11) and (11) are hard, but is not limited to these materials. Moreover, although the width | variety of protrusion (11) (11) is 2-12 cm, it is not limited to this width.

The main body (10) of the raising material (1) is press-fitted into the passenger compartment (3) and attached. In this case, since the protrusion (11) (11) is pressed and deformed and the cloth body (2) is in contact with the wall (33) of the passenger compartment (3), the main body (10) has, for example, a side surface ( 12) The contact area with the wall (33) is smaller than when the fabric (2) affixed to the entire surface is in contact with the wall (33). Therefore, even if the cloth body (2) on the protrusions (11) and (11) rubs against the wall (33) of the passenger compartment (3) while the vehicle is running, the generated noise is alleviated and the level of the noise is reduced. be able to.
In the present invention, since the protrusions (11) and (11) are bent and deformed to bring the cloth body (2) into contact with the wall (33) of the passenger compartment (3), the cloth body (2) has the wall (33). ). Thereby, it can suppress that a main body (10) rattles, and it can reduce the noise by friction with the cloth (2) and wall (33) in driving | running | working a motor vehicle.

  The cloth body (2) is thicker than the conventional coating layer (19) shown in FIG. Specifically, the coating layer (19) is considered to be 0.1 μm to 10 μm, while the fabric (2) is 5-8 mm in the case of felt. Therefore, even if the cloth body (2) rubs against the wall (33) and causes friction, the amount of the cloth body (2) to be worn is a slight ratio compared to the thickness of the original cloth body (2). That is, it is possible to keep the effect of preventing abnormal noise due to friction between the main body (10) and the vehicle interior wall (33) for a long time.

Since the raising material (1) is placed at the foot of the occupant, the compression strength of the raising material (1) is not damaged when the occupant enters the passenger compartment (3) and the weight of the occupant is added. It will be necessary. The applicant has calculated the compressive strength of the raising material (1) as follows.
If the length of the occupant's shoes is 26 cm and the shortest width of the shoe (the arch portion) is 7.5 cm, the shoe area S is 26 cm × 7.5 cm = 195 cm ² . On the other hand, when the weight W of the occupant including shoes is 75 kg, the compressive strength K of the raising material (1) is K = W / S = 75 kg / 195 cm ² ≈0.4 kg / cm ² .
As a material satisfying this compressive strength, there is a foamed resin bead obtained by pre-foaming raw material particles 50 times as a foamed resin, but is not limited to this magnification. The resin constituting the foamed resin beads includes polystyrene and polyolefin composite resins, polystyrene resins such as polystyrene, high impact polystyrene, styrene-ethylene copolymers, polyolefin resins such as polyethylene and polypropylene, and polylactic acid resins. A mixture of these synthetic resins and a copolymer of monomers can also be used. Of course, other resins may be used as long as the compressive strength is satisfied. Moreover, this compressive strength is applied not only to the raising material (1) but also to the tibia pad (6).

(Second embodiment)
In this example, the tibia pad (6) is illustrated as an automobile interior part, but a raising material may be used. The material constituting the tibia pad (6) is the same foamed resin as in the first embodiment.
FIG. 3 is a plan view of the tibia pad (6) in this example, and FIG. 4 (a) is a front view of FIG. 3 viewed from the D direction. In this example, the cloth body (2) covers the entire bottom surface of the main body (60) of the tibia pad (6). While the vehicle is running, the bottom surface of the main body (60) and the bottom wall of the passenger compartment (3) may rub against each other and generate noise. Therefore, the entire bottom surface of the main body (60) of the tibia pad (6) 2) Covered.
A protrusion (61) protrudes outward from the main body (60), and the cloth body (2) also covers the tip surface (62) of the protrusion (61). Each protrusion (61) (61) is pressed and deformed when the main body (60) is mounted in the passenger compartment (3), and the cloth body (2) is elastically applied to the wall (33) of the passenger compartment (3). Touch with power.
As shown in FIG. 4 (a), on the tip surface (62) of the protrusion (61), the place where the cloth body (2) is attached is from the upper part (above the middle part in the thickness direction) to the inside downward. An extending slope (63) is formed. As shown in FIG. 4 (b), instead of the slope (63), an arcuate surface (64) with the bulge facing outward may be used.

  5 (a) and 5 (b) are front views showing the work of attaching the cloth body (2) to the main body (60) and the protrusion (61). First, as shown in FIG. 5 (a), the cloth body (2) is attached to the bottom surface of the main body (60) and the bottom surface (65) of the protrusion (61) with a double-sided tape (not shown). Next, as shown in FIG. 5 (b), the cloth body (2) is folded upward at the boundary line K between the tip surface (62) and the slope (63), and the slope (63) and the tip surface (62) are folded. A cloth body (2) is affixed to. Since the bottom surface (65) and the slope (63) of the protrusion (61) are connected and do not form a stepped portion, the cloth body (2) can be adhered smoothly.

FIG. 6 is a front view showing an undesired protrusion (61). As shown in FIG. 6, if the tip surface (62) of the protrusion (61) is a stepped portion, the fabric body (2) floats from the tip surface (62) when the fabric body (2) is attached (see FIG. 6). 6) or the fabric (2) is wrinkled or misaligned, and the workability of attaching the fabric (2) is poor. In this example, the place where the cloth body (2) is attached is the slope (63) or the circular arc face (64), which is smoothly continuous. Therefore, when the cloth body (2) is attached, The possibility of floating, wrinkles and misalignment is alleviated, and the workability of attaching the cloth body (2) is improved.
In order to attach the main body (60) to the passenger compartment (3), the main body (60) is inserted from above the passenger compartment (3), but at the lower end of the front end surface (62) of the protrusion (61), Or since the circular arc surface is formed, this serves as a guide, and the main body (60) can be easily inserted into the passenger compartment (3).

  The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

It is a top view of the raising material of 1st Example. It is the front view which looked at the raising material of FIG. 1 from the A direction. It is a top view of the tibia pad of 2nd Example. (a) is the front view which looked at the tibia pad of FIG. 3 from the D direction, (b) is the front view of the modification of (a). (a), (b) is a front view which shows the affixing operation | work of the cloth body to a main body and protrusion. It is a front view which shows an undesirable protrusion. It is a perspective view which shows the compartment of the conventional motor vehicle. FIG. 8 is an enlarged perspective view of a portion surrounded by a circle B in FIG. 7. It is sectional drawing which fractured | ruptured the floor surface of FIG. 8 in the surface containing a XX line, and was seen by the arrow. It is a perspective view of the conventional tibia pad. It is a top view of the conventional raising material. It is a top view of another conventional automobile interior part.

Explanation of symbols

(1) Raising material
(2) Cloth body
(3) Car compartment
(10) Main unit
(11) Projection
(33) Wall
(6) Tibia pad
(60) Body
(61) Protrusion
(62) Tip surface

Claims (4)

It is an automotive interior part that is made of synthetic resin and is installed in the vehicle interior. The side of the main body has a protrusion that presses the wall of the passenger compartment, and the front end surface of the protrusion reduces noise caused by friction with the wall. Automotive interior parts, characterized in that a cloth body is attached. The automobile interior part according to claim 1, wherein the tip end surface of the protrusion forms a slope or a circular arc surface extending downward from the upper part at a position where the cloth body is attached. The automobile interior part according to claim 1 or 2, wherein the cloth body covers a lower surface of the main body. The automobile interior part according to any one of claims 1 to 3, wherein the main body and the protrusion are integrally formed of a foamed resin material.

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