JP2010030571A - Extrusion molded product with core material for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extrusion molded product having a core material for automobiles installed at a flange located at a periphery of a vehicle body opening found at locations such as a door, a trunk and a rear door or the like of automobiles. <P>SOLUTION: This extrusion molded product with a core material for automobiles is characterized in that a core material 3 having a substantial U-shaped section made of hard synthetic resin and a covering layer made of either thermoplastic elastomer or rubber placed outside the core material are formed in a longitudinal direction, and either an outer groove 4 or an inner groove 5 is formed over a predetermined longitudinal segment at a connected part 8 having substantial U-shaped section of the core material 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an extruded product for an automobile having a core material such as a weather strip and a trim that is attached to a flange at the opening peripheral edge of various vehicle bodies such as automobile doors, trunks, and back doors.

  Extruded products for automobiles having a core material such as a weather strip and a trim that are attached to flanges at the periphery of the opening of various vehicle bodies such as automobile doors, trunks, back doors, etc. Because it is forcibly opened and attached to the thick part where a large number of flanges are partially overlapped, there are problems such as extremely low workability, poor appearance, and poor quality. there were.

  The present invention solves the above problems, and an extruded product for an automobile having a core material has a substantially U-shaped cross section made of a coating layer made of thermoplastic elastomer or rubber and a hard synthetic resin in the longitudinal direction. The core material is integrally formed, and an outer groove portion is formed over a predetermined section in the longitudinal direction outside the connecting portion having a substantially U-shaped cross section of the core material. Moreover, an inner groove part is formed over the predetermined area of a longitudinal direction inside the connection part of the cross-sectional substantially U shape of this core material. Further, a plurality of outer groove portions or inner groove portions on the outer side of the connecting portion having a substantially U-shaped cross section of the core member are formed, and the flanges on the periphery of the opening are not of a constant thickness, but a plurality of flanges are partially overlapped. Even in the case of the thick portion, it is possible to provide an extruded product that can be easily opened and mounted, the workability is improved, and the appearance quality is excellent.

  The present invention achieves the above object, and is an extruded product for automobiles having a core material (3) to be attached to flanges (12) and (12) at the periphery of a vehicle body opening such as an automobile door, trunk and back door. (1) forms a core material (3) having a substantially U-shaped cross section made of a hard synthetic resin in the longitudinal direction and a coating layer (2) made of a thermoplastic elastomer or rubber outside the core material (3). The outer groove portion (4) is formed over the predetermined section (15) in the longitudinal direction outside the connecting portion (8) having a substantially U-shaped cross section of the core material (3). Moreover, an inner groove part (5) is formed over the predetermined | prescribed area of a longitudinal direction inside the connection part (8) of a cross-sectional substantially U shape of this core material (3). Further, a plurality of outer groove portions (4) (4) or inner groove portions (5) (5) on the inside of the connecting portion (8) having a substantially U-shaped cross section of the core material (3) are formed, and the side portions (7) The outer groove portion (4) or the inner groove portion (5) is formed on the outer side or the inner side of (7), and the coating layer (2) is formed on a part or the whole of the inner side of the core material (3). Is.

Since the present invention is configured as described above, the flange at the periphery of the opening has a constant thickness as in the case of an extruded product for an automobile having a core member attached to the periphery of the opening of this type of conventional automobile. However, in the case of a thick portion where a large number of flanges are partially overlapped, it is forced to push in, so it takes a lot of time and workability is deteriorated, and the appearance and quality deteriorate. There is an effect to solve the problem. In addition, a core material having a substantially U-shaped cross section made of a hard synthetic resin is integrally molded, and an outer groove portion is formed over a predetermined section in the longitudinal direction outside the connecting portion having a substantially U-shaped cross section of the core material. In particular, the side portion of the thick core material in which a large number of flanges are overlapped can be easily opened by opening outward, improving workability and having an excellent appearance.
Also, since the inner groove portion is formed over a predetermined section in the longitudinal direction inside the connecting portion having a substantially U-shaped cross section of the core material, it is possible to easily confirm whether the groove is formed after extrusion molding, Since the outer groove part on the outside of the part or the inner groove part on the inner side are formed, the core material can be flexibly bent, and by forming the outer groove part or the inner groove part on the outer side or inside of the side part, the core material can be further flexible. There is also an effect that can be bent. And even if the flange at the periphery of the opening is not a constant thickness, and there is a thick portion where the flange is partially overlapped, it can be easily mounted, so the workability is remarkably improved and the appearance is also excellent. effective.

  According to the extruded product for automobiles having the core material configured as described above, the flange is provided at a position where it is mounted on the flange at the periphery of the opening of various vehicle bodies such as doors, trunks, and back doors. Even when the thickness is not a constant thickness and a thick portion in which a large number of flanges are superposed, the connecting portion of the core material is opened and easily attached by the outer groove portion and the inner groove portion provided in the core material. In addition, the appearance is excellent without deteriorating the quality.

Referring to the drawings, an embodiment of the present invention will be described with reference to FIG. 1 for an automobile having a core member (3) attached to a flange (12) at the periphery of a vehicle body opening such as an automobile door, trunk, and back door. The cross-sectional view described in claim 1 of the extruded product (1) is shown, and the extruded product (1) having the core material (3) is a cross-section made of a hard synthetic resin in the longitudinal direction shown in FIG. A U-shaped core material (3) and a coating layer (2) made of a thermoplastic elastomer or rubber are formed outside the core material (3), and the cross section of the core material (3) is substantially U. The outer groove portion (4) is formed over the predetermined section (15) in the longitudinal direction outside the connecting portion (8) on the character-shaped upper surface.
The core member (3) is formed with opposing side portions (7) and (7), and is formed in a substantially U-shaped cross section by the connecting portion (8) on the upper surface.
A hollow seal portion (10) is formed on the side surface of one side portion (7) of the core material (3) in the covering layer (2). The hollow seal portion (10) is formed at a desired position such as being formed on the upper surface of the connecting portion (8) depending on where the vehicle body panel (13) is attached. It is formed in the shape to do. (11) is a makeup lip, and (9) is a holding piece for clamping.
Further, a plurality of cut portions (16) and (16) are formed at predetermined intervals in the side portions (7) and (7) of the core member (3) shown in FIG.
Further, the core material (3) shown in FIG. 3 shows a cross section taken along line AA shown in FIG. 2, and the core material (3) shown in FIG. 4 shows a cross section taken along line BB shown in FIG. Is shown.

  The embodiment shown in FIG. 5 shows the cross section described in claim 2 of the claims, and is formed on the inner surface side of the connecting portion (8) having a substantially U-shaped cross section of the core material (3). An inner groove (5) is formed in a predetermined section (15) in the longitudinal direction. In addition, one of the holding pieces (9) and (9) facing each other is formed with a non-thermally fused portion (17).

  FIG. 6 shows the cross section described in claim 3 of the extruded product (1), and a plurality of external parts are provided outside the connecting portion (8) having a substantially U-shaped cross section of the core material (3). Grooves (4) and (4) are formed in parallel over a predetermined section in the longitudinal direction. Furthermore, as described in claim 5, the coating layer (2) is formed on the entire inside of the core material (3).

  Next, what is shown in FIG. 7 is a cross section of the extruded product (1) as described in claim 4 of the extruded product (1). The cross section of the core (3) is substantially U-shaped. The outer groove portions (4) and (4) are formed on the outer side of the opposite side portions (7) and (7) over a predetermined section in the longitudinal direction, and are formed only on one of the side portions (7). There is also.

The embodiment shown in FIG. 8 shows an embodiment of a manufacturing method using a core material (3) made of a hard synthetic resin and a coating layer (2) made of a thermoplastic elastomer. The first extrusion molding machine (21 ) Injecting a hard synthetic resin to form a core material (3) having a substantially U-shaped cross section by the first die (22), and a slide jig installed at the outlet of the first die (22) By (20), the outer groove portion (4) or the inner groove portion (5) is formed in a desired predetermined section (15) of the core material (3). Then, after passing through the first cooling water tank (23), passing through the take-off roller (24), the excision machine (25) uses the side (7) (7) or side ( 7) Cut portions (16) and (16) are formed in a part of (7) and the connecting portion (8) as shown in FIG. 2, and the cut portions (16) and (16) are cut into a desired shape. . Thereafter, the molten thermoplastic elastomer that enters the inside of the second mold die (27) and forms the coating layer (2) injected into the second extrusion molding machine (26) and the third extrusion molding machine (28). The molten thermoplastic elastomer forming the hollow seal portion (10) injected into the heat is heated inside the second mold die (27) around the core material (3) and inside the connecting portion (8). It fuse | melts and passes a 2nd cooling water tank (29) after that. Reference numeral (30) denotes an injection tube. Further, when thermoplastic elastomers having different hardness are used for the holding piece (9) and the coating layer (8), an extrusion molding machine is added and extrusion is performed inside the second mold die (27). Although the core material (3) and the covering layer (2) are heat-sealed, as shown in FIG. 5, there is a case where the heat-sealing part (17) is merely formed without being partially heat-sealed.
FIG. 9 is a view showing a case in which the product according to the present invention is inserted into a portion where the flanges (12) and (12) at the peripheral edges of the openings have a certain thickness, and FIG. 12) It is a drawing showing a state in which (12) is attached to a thick portion where the polymer is partially polymerized and the core material (3) is slightly opened.

The material used in the present invention will be described. The core material (3) having a substantially U-shaped cross section is made of a hard synthetic resin, and the hard synthetic resin is an olefin having a hardness of HDA (JIS K6253, value after 15 seconds) of 85 or more. Resin and olefinic thermoplastic elastomer, or mixed synthetic resin in which 20 to 50% by weight of a powder such as talc is mixed with these synthetic resins is used to increase rigidity and reduce linear expansion coefficient. For example, by using a mixed synthetic resin in which 60% by weight of polypropylene resin and 40% by weight of talc powder are mixed, the linear expansion coefficient is reduced to 1/4 or less with respect to a synthetic resin core material of 100% by weight of polypropylene resin. Sometimes.
Further, as the thermoplastic elastomer material forming the coating layer (2) and the hollow seal portion (10), an olefin thermoplastic elastomer or a foam thereof, a styrene thermoplastic elastomer or a foam thereof, and a rubber material. For example, rubber such as EPDM is used.
In addition, as an example of usage depending on the hardness of the coating layer (2) and the hollow seal portion (10), as the thermoplastic elastomer or rubber forming the coating layer (2), the hardness HDA (JIS K6253, 15 seconds) After value) 40-80 is used, and as the thermoplastic elastomer or rubber forming the hollow seal portion (10), hardness HDA (JIS K6253, 15 seconds later value) 20-60 is used.

  It is a vertical side view of the extrusion molded product attached to a flange.   It is a slope view of the core material of this invention.   It is a vertical side view of the core material taken along line AA shown in FIG.   It is a vertical side view of the BB line shown in FIG. 2 of the core material.   It is sectional drawing which provided the non-heat-fusion part in one of the holding pieces of an extrusion molded product.   It is sectional drawing which applied the coating layer to the whole inside of an extrusion molded product.   It is sectional drawing which provided the outer-groove part in the upper outer side of the side part which a core material opposes.   It is a general view which shows the manufacturing method of the extrusion molded product of this invention.   It is sectional drawing which inserted the flange part of fixed thickness in the extrusion molded product.   It is sectional drawing which inserted the flange which became the thickness polymerized many with respect to the extrusion molded product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Extrusion molded product 2 Covering layer 3 Core material 4 Outer groove part 5 Inner groove part 7 Side part 8 Connection part 9 Holding piece 10 Hollow seal part 11 Makeup lip 12 Flange 13 Body panel 15 Predetermined part 16 Cut part 17 Non-thermal-bond part 20 Slide jig 21 First extrusion molding machine 22 First mold die 23 First cooling water tank 24 Take-off roller 25 Cutting machine 26 Second extrusion molding machine 27 Second mold die 28 Third extrusion molding machine 29 Second cooling water tank 30 Injection tube

Claims (5)

  An extruded product (1) to be mounted on a flange at the periphery of a vehicle body opening such as an automobile door, trunk, or back door is a core material (3) having a substantially U-shaped cross section made of a hard synthetic resin in the longitudinal direction and the core material. A coating layer (2) made of a thermoplastic elastomer or rubber is formed on the outside of (3), and an outer groove (4) is formed on the outside of the connecting portion (8) having a substantially U-shaped cross section of the core material (3). An extruded product for an automobile having a core material characterized by being formed over a predetermined section in the longitudinal direction.   An extrusion for an automobile having a core material, characterized in that an inner groove portion (5) is formed over a predetermined section in the longitudinal direction inside a connecting portion (8) having a substantially U-shaped cross section of the core material (3). Molding.   A plurality of outer groove portions (4), (4) on the outer side of the connecting portion (8) having a substantially U-shaped cross section of the core member (3), or a plurality of inner groove portions (5), (5) on the inner side are predetermined in the longitudinal direction. An extruded product for an automobile having a core material according to claim 1 or 2, wherein the extruded product is formed over a section.   An outer groove portion (4) or an inner groove portion (5) is formed over a predetermined section in the longitudinal direction on the outer side or the inner side of the opposite side portions (7) and (7) having a substantially U-shaped cross section of the core material (3). An extruded product for automobiles having a core material characterized by that.   4. An extruded product for an automobile having a core material according to claim 1, wherein a coating layer (2) is deposited on a part or the whole of the inner side of the core material (3).

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