JP2013184515A - Roof molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof molding configured to prevent poor appearance of a design surface.SOLUTION: A roof molding 20 is formed to be extended from an upper end part of on one pillar section 28 to both lateral sides, and includes a lid section 24 covering an opening of a groove, a leg section 26 formed to be extended from the lower end part of the pillar section 28 and inserted into the groove to be engaged with the groove in the width direction, and one core material 30 inserted into the pillar section 28 vertically. The core material 30 is arranged with the upper end aligned with a connection section connected to the lid section 24 in a position closer to the lid section 24 side in the pillar section 28.

Description

  The present invention relates to a roof molding that is attached to a groove provided in a roof of a vehicle body.

  A vehicle such as a general automobile is provided with various moldings that are formed into an elongated shape for the purpose of closing a gap between components or for decoration purposes. For example, as shown in FIG. 7, the vehicle body is formed by welding a side edge portion of a roof panel 10 forming a top surface and an upper edge portion of a side panel 11 mainly forming a side surface, and these weld portions are formed on the vehicle body. The front and rear sides of the roof R extend in the front-rear direction. In the roof R, a welded portion between the roof panel 10 and the side panel 11 is formed in a groove shape that opens upward, and a roof molding (hereinafter referred to as a roof molding) 50 is fitted into the groove 12. 12 is blocked (see, for example, Patent Document 1).

  The roof molding 50 includes a molding body 52 made of an elastic resin or rubber formed by extrusion molding, and a core 60 made of metal or the like embedded in the molding body 52. That is, the roof molding 50 inserts the core material 60 having higher rigidity than the molding main body 52 into the molding main body 52 to stabilize the shape and facilitate the mounting operation to the groove 12. The warp etc. after the attachment is suppressed.

  The molding body 52 includes a lid 54 that closes the opening 12a that opens above the groove 12, a leg 56 that is inserted into the groove 12 and fits in the width direction of the groove 12 with respect to the groove 12. The column portion 58 extends in the vertical direction and connects between the lid portion 54 and the leg portion 56, and is formed in a letter “E” shape as a whole (see FIG. 7). The core member 60 is inserted into the lid portion 54 or the column portion 58 of the molding main body portion 52. The lid portion 54 is set to be larger than the width (left and right) dimension of the opening 12a of the groove 12, and the design surface 54a facing upward is formed in a convex shape that gradually decreases from the central portion toward the left and right ends, for example. Yes. Moreover, the cover part 54 is formed so that a lower surface may incline upward as it goes to the left and right end parts, and a base part connected to the column part 58 is relatively thick. Then, the roof molding 50 cuts the leg portion 56 from the front and rear end portions, and positions the front and rear end portions by sandwiching the pillar portion 58 with a clip (not shown) provided inside the groove 12. The intermediate portion is held by the leg portion 56 being fitted into the groove 12.

JP 2001-130343 A

  In the roof molding 50, if the core member 60 is inserted into the lid portion 54 whose design surface faces outward, the appearance of defects such as sink marks due to the core member 60 is likely to occur on the upper surface of the lid portion 54. Therefore, when the core member 60 is inserted into the column portion 58 apart from the lid portion 54, the roof molding 50 is long in the vehicle front-rear direction, and therefore the entire molding that functioned by the core material 60 being positioned at the lid portion 54 can be obtained. Shape stability is impaired.

  That is, the present invention has been proposed to solve these problems in view of the problems inherent in the roof molding according to the prior art, and is a lightweight roof having both shape retention and good appearance. The purpose is to provide a mall.

In order to overcome the above-mentioned problems and achieve the intended object, the roof molding of the invention according to claim 1 of the present application is
In the roof molding attached to the groove provided on the roof of the car body,
A lid that extends from one end of one pillar to both sides in the width direction and covers the opening of the groove;
Legs that are formed to extend from the other end of the column part to both sides in the width direction, are inserted into the grooves and fit in the width direction of the grooves,
It is formed in a plate shape having a rectangular cross section, and includes a single core member inserted into the column portion in a vertical posture in which the long side of the rectangular cross section extends in the separation direction of the lid portion and the leg portion,
The gist of the invention is that the core member is arranged at a position close to the lid part side in the column part, with the edge on the lid part side being aligned at a connection portion connected to the lid part.
According to the first aspect of the present invention, since the core material is inserted into the column portion in the vertical posture along the longitudinal side in the separating direction of the lid portion and the leg portion, the core material is inserted in the horizontal posture. It is possible to set the thickness dimension of the column portion to be thinner than that. Thereby, the connection part with the pillar part in the lid part can be set thinly according to the thickness of the pillar part, and appearance defects such as sink marks on the design surface facing the outside of the lid part can be suppressed. The weight can be reduced. In addition, the roof molding arranges the core material at a position close to the lid portion side in the column portion, and arranges the edge of the core material on the lid portion side so as to be aligned with the connection part connected to the lid portion in the column portion. Therefore, the core material can suitably contribute to the shape stabilization of the design surface, and the appearance defect of the design surface due to the presence of the core material can be minimized.

The gist of the invention according to claim 2 is that the core material is disposed at a central portion in the width direction of the column portion.
According to the invention which concerns on Claim 2, by arrange | positioning a core material in the center part of the width direction of a pillar part, the core material does not hinder the fluidity | liquidity of the material at the time of shaping | molding, and suppresses the appearance defect resulting from a core material. Can do.

In the invention which concerns on Claim 3, it formed so that the thickness dimension of the connection site | part connected to the said column part in the said cover part and the thickness dimension of the connection site | part connected to the said cover part in the said column part might become equal. And
According to the invention according to claim 3, since the thickness dimension of the connection part connected to the lid part in the column part is equal to the thickness dimension of the connection part connected to the column part in the lid part, the pillar part and the lid part are formed. The appearance defect of the lid portion due to the difference in thickness can be suppressed.

In the invention according to claim 4, each of the lid part and the leg part is formed in a symmetrical shape in the width direction across the column part,
The gist of the present invention is that the leg portion is formed larger than the opening width of the groove, and the thickness dimension of the connecting portion connected to the column portion is equal to the thickness dimension of the column portion.
According to the invention which concerns on Claim 4, the sink of the outer surface in a connection site | part can be suppressed by aligning the thickness of this connection site | part in the connection site | part of a pillar part and a leg part.

  The roof molding according to the present invention is lightweight and has both shape retention and good appearance.

1 is a side view showing a part of a roof molding according to a preferred embodiment of the present invention. It is the XX sectional view taken on the line of FIG. It is the YY sectional view taken on the line of FIG. It is a schematic sectional drawing shown in the state where the roof molding of the example was attached to the groove. It is a perspective view which shows a part of roof molding of an Example. It is sectional drawing which shows the roof molding of the example of a change. It is sectional drawing which shows the conventional roof molding, Comprising: The state attached to the groove | channel is shown.

  Next, a preferred embodiment of the roof molding according to the present invention will be described below with reference to the accompanying drawings.

  In the embodiment, as shown in FIG. 4, a roof molding 20 is described as an example, which is attached to a groove 12 that extends in the front and rear sides of the roof R of the vehicle body and opens upward. The front, rear, left, right, up and down are designated with reference to the mounting posture to the vehicle body. The roof R is formed by welding the side edge of the roof panel 10 forming the top surface and the upper edge of the side panel 11 mainly forming the side surface, and these welds Ra are formed on both side edges of the roof R. Extends back and forth. The roof panel 10 and the side panel 11 are welded at the bottom of a groove 12 formed in a concave shape opening upward, and the welded portion Ra is hidden by a roof molding 20 attached to the groove 12. The groove 12 is formed such that the width (left and right) dimension decreases from the bottom 12b toward the opening 12a, and the width of the opening 12a is smaller than the width of the bottom 12b. Moreover, the opening side edge of the groove 12 is formed in a step shape, and a later-described lid portion 24 of the roof molding 20 is accommodated in the stepped portion 14.

  As shown in FIGS. 1 to 3, the roof molding 20 of the embodiment includes a molding main body (main body) 22 made of a material such as synthetic resin or rubber (hereinafter referred to as molding material), a metal or a hard synthetic material. It consists of materials, such as resin, and is fundamentally comprised from the core material 30 inserted in the molding body part 22. FIG. The roof molding 20 is a long member formed in accordance with the groove 12 extending over the front and rear of the roof R of the vehicle body. For example, the core 30 is inserted in accordance with the extrusion molding of the molding body 52. Thus, they are integrally formed (see FIG. 5). The molding body 22 is preferably made of a molding material having flexibility and elasticity that can follow the groove 12 to some extent, such as vinyl chloride resin, ABS resin, fluororesin, various olefin elastomers or styrene elastomers. It can be used alone or in combination. On the other hand, the core material 30 needs to have rigidity for stabilizing the shape of the molding main body 22 and dimensional stability having a smaller linear expansion coefficient than the molding material constituting the molding main body 22. For this reason, the core material 30 is made of a synthetic resin or metal material that is harder than the molding material constituting the molding body 22 and has a certain degree of flexibility.

  The molding body 22 includes a single column 28 and a lid 24 that extends from the upper end (one end) of the column 28 to both sides in the width direction and covers the opening 12a of the groove 12. A leg portion 26 is formed so as to extend from the lower end portion (the other end portion) of the column portion 28 to both sides in the width direction, and is inserted into the groove 12 and fits in the width direction of the groove 12 (FIG. 1). And FIG. 2). The molding body 22 is arranged such that a lid 24 and a leg 26 are connected by a pillar 28, and the lid 24 and the leg 26 are opposed to each other with the pillar 28 interposed therebetween. The molding main body 22 has a cross-sectional shape that is broken in the left-right direction by a column part 28 that extends vertically and connects a lid part 24 that extends to the left and right and a leg part 26 that extends to the left and right. (See FIGS. 2 and 5). The molding body 22 of the embodiment has a symmetrical shape in the width direction across the column portion 28, and is broken at any position except for front and rear ends (a mounting portion 22a (see FIG. 1) described later). Also have the same cross-sectional shape.

  The lid portion 24 is a plate-like portion having a plate surface along the upper surface of the roof panel 10. The width of the lid 24 is set to be the same as or larger than the width of the groove 12, and in the embodiment, it is configured to be slightly larger than the width of the opening 12a in the groove 12 (see FIG. 4). The lid portion 24 has extended pieces 25 and 25 extending from the column portion 28 to the left and right (in the width direction of the groove 12), and the lower surface facing the leg portion 26 side at the extended end of the left and right extended pieces 25. 24a (hereinafter referred to as a covering surface) is adapted to abut against the stepped portion 14 forming the opening side edge of the groove 12. The lid portion 24 is formed such that a design surface (upper surface) 24b facing the outside of the groove 12 is curved toward the leg portion 26 side from the column portion 28 side toward the extending end side, and the central portion is formed as a whole. The convex shape is the highest (see FIG. 2). Further, the left and right extending pieces 25 are formed by denting a portion (hereinafter simply referred to as a connecting portion) where the covering surface 24a is connected to the column portion 28 as compared with the extending end. Here, each extending piece 25 is curved and formed so as to be biased toward the leg portion 26 as the covering surface 24 a is separated from the column portion 28. Each extending piece 25 is formed such that a required range from the connection portion on the design surface 24b toward the extending end extends along the shape of the covering surface 24a. It is comprised in the shape which curves to the leg part 26 side as it leaves | separates from the side. The extending piece 25 of the embodiment has a thickness dimension in a range in which the covering surface 24a extends in parallel with the design surface 24b except for the extending end, and the covering surface 24a and the design surface 24b extend in parallel. Are equal. Moreover, the cover part 24 of an Example becomes a taper shape as the extended piece 25 goes to an extended end because the curvature of the design surface 24b becomes large compared with the coating | coated surface 24a in an extended end.

  The column part 28 is formed so as to extend in a direction intersecting the lid part 24 (see FIG. 2). That is, the column part 28 extends in the depth direction of the groove 12 and is inserted into the groove 12 when the roof molding 20 is attached to the groove 12 (see FIG. 4). The column portion 28 is connected to the center portion of the lid portion 24. And the connection part of the column part 28 and the cover part 24 has spread gradually right and left as it goes to the cover part 24 side from the leg part 26 side. As described above, in the embodiment, the connecting portion between the column portion 28 and the lid portion 24 is configured by the tapered surface 28a that is continuous from the upper end side surface of the column portion 28 to the covering surface 24a of the lid portion 24, and the left and right tapered surfaces 28a. , 28a are formed so as to be spaced apart from each other while curving in an arc shape from the leg portion 26 side toward the lid portion 24 side. The column portion 28 of the embodiment is formed so that the left and right side surfaces basically extend in parallel with each other except for the upper and lower tapered portions, and the thickness dimension along the width direction of the groove 12 is basically constant. It is formed to become. In the following description, unless otherwise specified, the thickness dimension Df of the lid portion 24 is a portion where the upper end of the tapered surface 28a of the column portion 28 is connected in the lid portion 24 (connection connected to the column portion 28 in the lid portion 24). It is a dimension along the vertical direction (the depth direction of the groove 12). Further, the thickness dimension Dh of the column portion 28 is the left-right direction (the connection portion connected to the lid portion 24 in the column portion 28) where the lower end of the tapered surface 28a and the general portion of the column portion 28 are connected (the groove 12). The dimension along the width direction). And the roof molding 20 is formed so that the thickness dimension Df of the cover part 24 and the thickness dimension Dh of the pillar part 28 may become equal (refer FIG. 2).

  The leg portion 26 is a plate-like portion extending to face the lid portion 24, and the width dimension thereof is set to be the same as or larger than the width dimension of the groove 12. In the embodiment, the leg part 26 is larger than the width dimension of the groove 12. ing. The leg part 26 has contact pieces 27 respectively extending left and right from the column part 28, and the left and right extending ends are elastically contacted with the side surface of the groove 12 (see FIG. 4). Each abutment piece 27 is formed in a substantially “<” shape with a distal end portion bent toward the lid portion 24, and becomes narrower as the root portion is separated from the connection portion with the column portion 28. It is comprised so that thickness may become fixed. The molding main body 22 is formed such that the thickness dimensions Df, Dh, Da of the lid 24, the column 28, and the leg 26 are equal (see FIG. 2). In addition, the thickness dimension Da of the leg part 26 refers to a dimension at the lower end of the taper surface 28b that is continuous with the column part 28 and the leg part 26 (referred to as a connection portion that is continuous with the column part 28 in the leg part 26).

  The core member 30 is a long member having a rectangular cross section, and is disposed over the entire length of the molding body 22 matched to the longitudinal length of the groove 12 (see FIG. 1). Further, the core member 30 is inserted into the column portion 28 in a vertical posture in which the long side of the rectangular cross section extends along the direction in which the lid portion 24 and the leg portion 26 are separated. The core material 30 is disposed at the center in the left-right direction (width direction) of the column portion 28, and the thickness of the covering layer covering the side of the core material 30 is set to be the same on the left and right. In the embodiment, the thickness dimension of the column portion 28 is set to 2.0 mm, and the thickness of the coating layer is set to 0.75 mm with respect to the core material 30 having a thickness of 0.5 mm. Further, the core member 30 is disposed at a position close to the lid portion 24 side in the column portion 28. In the embodiment, the connection portion (the lower end of the tapered surface 28 a) connected to the lid portion 24 in the column portion 28 and the upper end (end edge on the lid portion 24 side) of the core member 30 are arranged to be aligned.

  The roof molding 20 has attachment portions 22a that are held by fixtures (not shown) such as clips provided in the grooves 12 at the front and rear end portions corresponding to the front and rear of the grooves 12, respectively. (See FIG. 1). The attachment portion 22 a has a shape in which the lower portion of the column portion 28 and the leg portion 26 are cut below the core member 30, and has a substantially “T” -shaped cross section from the lid portion 24 and the remaining portion of the column portion 28. (See FIG. 3). Note that the attachment portion 22a may be formed by cutting the molding main body portion 22 formed in the shape of the letter “D” or may be formed in the shape of the letter “T” from the beginning. The roof molding 20 is configured such that the column part 28 forming the attachment part 22a is gripped by the fixture, and the leg part 26 elastically contacts the side surface of the groove 12 so that the cover part 24 covers the opening 12a. It is attached to the groove 12.

  The roof molding 20 is configured such that the molding body 22 has different physical properties depending on the site. The molding body 22 of the embodiment includes a design layer 32 that forms the design surface 24 b of the lid 24, a contact layer 34 that forms the tip of the leg 26, and portions other than the design layer 32 and the contact layer 34. Are set so as to have different physical properties (see FIGS. 2 and 5). The design layer 32 is provided on the upper portion of the lid portion 24 (on the side opposite to the surface to which the column portion 28 is connected), and is set thinner than the general layer 36 constituting the lower portion of the lid portion 24. Since the design layer 32 becomes a portion exposed to the outside when attached to the groove 12, a layer having better weather resistance than the general layer 36 is employed. The contact layer 34 is provided from the middle of the root portion of the leg portion 26 to the tip portion, and the entire tip portion and a part of the root portion are configured by the contact layer 34 across the bent portion of the leg portion 26. Yes. Since the contact layer 34 is a part that contacts the groove 12 when it is attached to the groove 12 and a part that supports the contact part, a layer that is more elastic than the general layer 36 is employed. The molding body part 22 may be formed of the molding layer 32, the contact layer 34, and the general layer 36 with different molding materials or the same molding material with different grades. The molding body 22 of the embodiment employs an olefin elastomer (TPO) as a whole, and is adjusted so that the physical properties of the olefin elastomer are different according to the design layer 32, the contact layer 34 and the general layer 36. ing.

(Effects of Example)
Next, the operation of the roof molding 20 according to the embodiment will be described. According to the roof molding 20 of the embodiment, the core material 30 is inserted into the column portion 28 in a vertical posture along the longitudinal side in the direction in which the lid portion 24 and the leg portion 26 are separated from each other. It is possible to set the thickness dimension Dh of the column portion 28 to be thinner than that in the case where it is inserted in the posture. Thereby, the connection site | part with the pillar part 28 in the cover part 24 can be set thinly according to the thickness of the pillar part 28, and the appearance defects, such as the sink of the design surface 24b which faces the outer side of the cover part 24, are suppressed. can do. Moreover, since the amount of resin used for the roof molding 20 can be reduced, the roof molding 20 can be reduced in weight. In addition, from the viewpoint of stabilizing the shape of the roof molding 20, the core material 30 is preferably disposed near the design surface 24 b of the lid portion 24 to be stabilized most, but as the design surface 24 b is approached, the core material 30 is disposed. Appearance defects such as sink marks due to the presence of are likely to appear on the design surface 24b. According to the roof molding 20 of the embodiment, the core member 30 is disposed at the position close to the lid portion 24 side in the column portion 28, and the upper end of the core member 30 is aligned with the connection portion connected to the lid portion 24 in the column portion 28. Therefore, the core member 30 can suitably contribute to the stabilization of the shape of the design surface 24b, and the appearance defect of the design surface 24b due to the presence of the core member 30 can be minimized. Moreover, since the covering surface 24a facing the leg portion 26 side is formed with the connecting portion side recessed from the extending end of the connecting portion with the column portion 28 that tends to be thick in the lid portion 24, The recessed portion on the connection site side becomes a so-called meat steal, and the appearance defect of the design surface 24b of the lid 24 can be suppressed at a higher level. Further, by disposing the core material 30 in the central portion in the width direction of the column portion 28, the core material 30 is unlikely to hinder the fluidity of the material at the time of molding, and appearance defects caused by the core material 30 can be further suppressed.

  And in the part where different site | parts, such as the connection site | part of the cover part 24, the sink of the design surface 24b in a connection site | part can be suppressed by aligning the thickness of connection site | parts. That is, the molding body 22 has the same thickness dimension Df of the lid part 24 and the thickness dimension Dh of the column part 28, so that the lid part 24 has a thickness difference between the column part 28 and the lid part 24. The appearance defect of the design surface 24b can be suppressed. Furthermore, also in the connection site | part of the pillar part 28 and the leg part 26, the sink of the outer surface in a connection site | part can be suppressed by aligning the thickness of connection site | parts. In addition, since the lid 24 is formed with a required range including the connecting portion on the design surface 24b along the shape of the covering surface 24a, the thickness of the connecting portion side of the lid 24 becomes equal, and the thickness of the lid 24 is increased. The appearance defect of the design surface 24b due to the thickness difference can be suppressed.

  Since the mounting portion 22a is not provided with the leg portion 26, the mounting portion 22a is more susceptible to the molding shrinkage of the lid portion 24 than other portions, but the molding shrinkage of the lid portion 24 itself is suppressed as described above. Therefore, deformation such as warpage can be suppressed in the attachment portion 22a. Moreover, since the core member 30 is inserted in a vertical posture in which the rigidity is increased in the warp direction caused by the molding shrinkage of the lid portion 24, the core member 30 can suppress deformation at a higher level.

  Even if the groove 12 has a narrower opening 12a than the bottom 12b, the thickness dimension of the column portion 28 is set to be relatively thin by inserting the core member 30 into the column portion 28 in a vertical posture. Therefore, it is easy to attach the roof molding 20 from the opening 12a of the groove 12, and after the roof molding 20 is installed, the leg portion 26 set larger than the opening 12a of the groove 12 can be suitably prevented from coming off.

(Example of change)
The present invention is not limited to the configuration of the embodiment described above, and can be modified as follows.
(1) As in the roof molding 40 according to the modified example shown in FIG. 6, the connecting portion between the column portion 28 and the lid portion 24 may be formed in a square shape instead of a tapered surface. Further, the connecting portion between the column portion 28 and the leg portion 26 may be formed in a square shape instead of a tapered surface. In the roof molding 40 according to the modified example, the connecting portion of the column portion 28 that is connected to the lid portion 24 is located at a corner portion formed by the side surface of the column portion 28 and the covering surface 24 a of the lid portion 24, and the column portion 28 in the lid portion 24. The connection part connected to is located at the base of the extension piece 25. That is, the roof molding 40 of the modified example is formed so that the thickness dimension at the upper end of the column part 28 is equal to the thickness dimension of the base of the extending piece 25. In the modified example, the same reference numerals are given to the components corresponding to the embodiments.
(2) In the embodiment, the extending piece of the lid portion and the contact piece of the leg portion are provided symmetrically across the column portion, but one extending piece is set shorter than the other extending piece. It may be asymmetrical.
(3) The surface of the core material may be formed smooth or may be provided with irregularities by knurling or the like. By providing irregularities on the surface of the core material, familiarity with the molding material constituting the molding main body is improved, and peeling of the core material can be suppressed.
(4) The term “equal” or “parallel” as used in the present application is not limited to the same mathematical relationship, but may include substantially the same relationship as long as the object of the present invention can be achieved. Including.

12 grooves, 12a openings, 24 lids, 26 legs, 28 pillars, 30 cores,
R roof

Claims (4)

In the roof molding attached to the groove provided on the roof of the car body,
A lid that extends from one end of one pillar to both sides in the width direction and covers the opening of the groove;
Legs that are formed to extend from the other end of the column part to both sides in the width direction, are inserted into the grooves and fit in the width direction of the grooves,
It is formed in a plate shape having a rectangular cross section, and includes a single core member inserted into the column portion in a vertical posture in which the long side of the rectangular cross section extends in the separation direction of the lid portion and the leg portion,
The roof molding, wherein the core member is arranged at a position close to the lid portion side in the column portion, with the edge on the lid portion side being aligned with a connection portion connected to the lid portion.   The roof molding according to claim 1, wherein the core material is disposed at a center portion in the width direction of the column portion.   3. The roof molding according to claim 1, wherein a thickness dimension of a connection portion connected to the column portion in the lid portion is equal to a thickness dimension of a connection portion connected to the lid portion in the column portion. Each of the lid part and the leg part is formed in a symmetrical shape in the width direction across the column part,
The leg portion is formed so as to be larger than the opening width of the groove, and the thickness dimension of the connection portion connected to the pillar portion is equal to the thickness dimension of the pillar portion. The roof molding according to claim 1.

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