JP2001080431A - Automotive side protector mall - Google Patents

Abstract

(57) [Problem] To provide an automobile side protector molding having an excellent appearance of a decorative part and a large mounting strength. A side molding protector (M1) includes a molding body (110) and a mounting tool (clip) (150). The molding body 110 has a substantially C-shaped cross section and includes a decorative portion 120, a hollow thick portion 130, and a fixing portion (clip holder) 140, and a fixing portion (clip holder) 140 inside the hollow thick portion 130. A pair of reinforcing ribs 160, 160 is provided in a portion where is not provided.
The decorative portion 12 is formed by the pair of reinforcing ribs 160.
There is no sink mark or the like at 0, and the mounting strength of the molding body 110 is also increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile side protector molding. More specifically, the present invention provides a mounting device such as a clip, a bolt, and a mounting device such as a side protector molding for an automobile, in which a mounting device such as a bolt is attached to a holder formed integrally with the molding body. The present invention relates to an automobile side protector molding (hereinafter referred to as “side molding”) integrally formed with a molding body.

[0002]

2. Description of the Related Art A side molding is a component which is fixed to a door of an automobile or the like mainly for decorative purposes. The side molding includes a decorative portion on the front surface side and fixing portions provided at regular intervals on the rear surface side. The decorative part is required to have good appearance, and the fixing part is required to have a function of firmly attaching the side molding to the automobile body. A mounting tool such as a clip or a bolt is attached to the fixed portion or is integrally formed with the fixed portion. This type of side molding is generally molded by an injection molding method like other resin molded products.

[0003]

In order to improve the mounting strength of the side molding, it is preferable that the fixing portion is large and thick. However, when the fixing portion is made large and thick, the cooling rate becomes slower than other portions, and the thin portion near the thick portion has symptoms such as sink marks, undulations, and irregularities. That is, in the side molding, a defect such as sink occurs in the decorative portion around the fixing portion. for that reason,
In the injection molding method, the provision of a thick portion such as a fixing portion near the decorative portion should be avoided as much as possible.

Therefore, in order to maintain the appearance of the decorative portion, the fixing portion cannot be made large and thick. For this reason, in the conventional side molding, the thickness of the fixing portion is set to about 1/3 of the thickness of the entire side molding.

[0005] As described above, the conventional side molding cannot simultaneously satisfy the conflicting demands of improving the mounting strength of the fixing portion and maintaining the appearance of the decorative portion.

By the way, when a resin product partially having a thick portion is injection-molded, a gas is injected following the injection of the resin, and the pressure is maintained by this, whereby a hollow portion is formed in the thick portion of the molded product. A hollow injection molding method (gas assisted injection) for forming and preventing the occurrence of sink marks, undulations, irregularities, etc. on the surface of this portion has been carried out for molding various resin products. The side molding which is the object of the present invention can be formed by this hollow injection molding method.

An object of the present invention is to provide a side molding which is excellent in the appearance of a decorative portion and has a large fixing strength of a fixing portion by utilizing a hollow injection molding method.
Another object of the present invention is to provide a side molding having high bending rigidity by devising a sectional shape. Still another object of the present invention is to provide a side molding having a large mounting strength to an automobile body by devising a shape of a fixing portion.

[0008]

SUMMARY OF THE INVENTION A first aspect of the present invention is an automobile side protector molding comprising a combination of a molding body having a decorative portion and a fixing portion, and a mounting tool attached to the fixing portion. A hollow thick part is provided on the back surface of the decorative part, the fixing part is provided on the hollow thick part by separating from the decorative part, and the reinforcing part is separated from the decorative part across adjacent fixing parts. The above-mentioned problem has been solved by a side protector molding for an automobile, which is provided with a rib for use.

In the hollow injection molding method used to form the hollow thick portion, the hollow thick portion is used as a flow path for the injected gas. The flow of the molten resin mainly occurs in the hollow thick portion. The molten resin filled in the hollow thick part is extruded to the decorative part and the fixing part by the pressure of the gas. Then, the gas is held under pressure until the resin cools. Since the hollow thick part is interposed between the decorative part and the fixing part and they are separated from each other, even if the cooling speed of the relatively thick fixing part is slow, the decorative part may have sink marks, undulations, irregularities, etc. No failures occur.

In the first aspect of the present invention, the reinforcing ribs are provided between the adjacent fixing portions so as to be spaced apart from the decorative portion, so that the decorative portion does not suffer from sink marks or the like, and the strength of the molding body does not increase. Can be improved, and the strength of the fixing portion against the moment in the longitudinal direction can also be improved.

According to a second aspect of the present invention, there is provided a side protector molding for an automobile, comprising: a molding body having a decorative portion and a fixing portion; and a mounting tool molded integrally with the fixing portion. A hollow thick part is provided on the back of
A side protector for an automobile, wherein the fixing portion is provided on the hollow thick portion so as to be separated from the decorative portion, and a reinforcing rib is provided between the adjacent fixing portions so as to be separated from the decorative portion. The above problem is solved by a molding.

The side molding is formed by a hollow injection molding method as in the first invention. The hollow thick portion is used as a flow path for the injected gas. The flow of the molten resin mainly occurs in the hollow thick portion. The molten resin filled in the hollow thick part is extruded to the decorative part and the fixing part by the pressure of the gas. Then, the gas is held under pressure until the resin cools. Since the decorative portion and the fixing portion are separated from each other by the hollow thick portion, even if the cooling speed of the relatively thick fixing portion is delayed, the decorative portion does not suffer from defects such as sink marks, undulations and irregularities. .

Also in the second invention, since the reinforcing ribs are provided between the fixing portions, the strength of the molding body and the fixing portion can be improved as in the first invention.

[0014]

1 to 3 show a side molding M1 according to a first embodiment of the present invention. The side molding M1 includes a molding main body 110 formed by a hollow injection molding method, and a mounting tool, that is, a clip 150. The molding body 110 and the clip 150 are both formed of resin. Mall body 110,
Its cross section is substantially C-shaped. Mall body 110,
It has a decorative part 120, a hollow thick part 130, and a clip holder (fixing part) 140.

The hollow thick part 130 is located at the center in the width direction on the back side of the decorative part 120 and overlaps a part of the decorative part 120. The hollow thick-walled portion 130 has a substantially quadrangular cylindrical shape, and includes a pair of lateral side walls 132 extending at a substantially right angle in a direction away from the back surface of the decorative portion 120, and a top wall 134 connecting ends of the lateral side walls 132. Is formed. The top wall 134 is separated from the decorative portion 120 by the side wall 132.

The clip holder 140 is provided in the hollow thick portion 13.
0 is integrally formed with the top wall 134. The clip holder 140 includes a pair of side wall portions 142 extending in a direction away from the top wall 134 and parallel to each other.
And a vertical side wall 144 connecting one end of each of the P. 42 to the other. The other end of the side wall 142 is open. At the upper ends of the pair of lateral side walls 142, retaining plates 146 are provided inward, and at the open ends of the retaining plates 146, claws 148 are provided to face each other.
Opposing surfaces of the claws 148 are formed as inclined surfaces 149 which become wider toward the open side.

The clip 150 is connected to the seat 152 by the connecting plate 1.
This is a configuration in which the locking body 156 is provided integrally with the intermediary of the locking member 154. The lower half along the thickness direction of the seat body 152 is a rectangular fixing portion 158, and the upper half thereof is an equal leg trapezoidal insertion portion 159. The width of the insertion portion 159 gradually decreases from the insertion end to the rear end.

Reference numeral 160 denotes a pair of reinforcing ribs, which are provided inside the hollow thick portion 130 where the clip holder 140 is not provided. Reinforcing rib 16
0 is provided to protrude along the direction of the overall thickness of the molding body 110.

The decorative portion 120, the horizontal side wall 132 and the top wall 134 of the hollow thick portion 130, the horizontal side wall portion 142 and the vertical side wall 144 of the clip holder 140, and the reinforcing rib 160
Are substantially equal in thickness.

The molding body 110 and the clip 150 are assembled as follows. Seat 15 of clip 150
2 is inserted through the opening of the clip holder 140, the insertion portion 159 of the seat 152 pushes and expands each claw 148 of the clip holder 140 to the side, thereby elastically deforming each of the side wall portions 142. When the rear end of the insertion portion 159 completely passes through the portion of each claw body 148, the pair of side wall portions 142 that have been pushed to the side by elastic deformation are restored to the original shape. Accordingly, the pair of claw members 148 prevents the seat body 152 from falling out in the insertion direction, and the pair of retaining plates 146 prevents the seat body 152 from falling out along the direction orthogonal to the insertion direction. A clip 150 is attached to 140.

The side molding M1 is mounted on an automobile as follows. FIG. 1 shows only a part of the molding body 110, and the clip holder 140 described above is integrally formed at at least two places of the molding body 110. As shown in FIG. When the locking body 156 of the clip 150 attached to the clip holder 140 is inserted and locked into the locking hole 12 provided in the body sheet metal 10 of the vehicle body, the most protruding portion of the side surface of the vehicle body is The molding body 110 is horizontally mounted via a plurality of clips 150.

As described above, in the molding body 110, the hollow thick portion 130 is integrally formed inside the central portion in the width direction, and the clip holder 140 is integrally formed in the inner portion of the hollow thick portion 130. I have. Therefore, the decoration unit 120
And the clip holder 140, between which the hollow thick portion 13
0, the clip holder 14
Even if the wall thickness of the side wall portion 142 and the vertical side wall 144 constituting 0 is substantially equal to or greater than the wall thickness of the molding body 110, the hollow inner peripheral surface of the hollow thick wall portion 130 has
Even when sinks, undulations, irregularities, and the like may occur partially, sinks, undulations, irregularities, and the like do not occur on the surface (decorative surface) 111 of the molding body 110 where the clip holder 140 is provided. .

The side molding according to the present embodiment further has the following features. The side wall portion 142 of the clip holder 140 is substantially aligned with the side wall 132 of the hollow thick portion 130,
The reinforcing ribs 160 are also substantially aligned with the lateral side walls 132 of the hollow thick part 130. Therefore, even if a tensile force or a compressive force or a moment acts on the clip 150 in the thickness direction,
Side wall 132 of hollow thick part 130 and clip holder 14
0 of the molding body 1 resists these forces.
10 to prevent deformation. Side wall 13 of hollow thick part 130
2 and the side wall portion 142 of the clip holder 140 are formed substantially at right angles to the decorative portion 120, thereby increasing the section modulus in the thickness direction of the molding body 110 and improving the strength of the molding body 110 itself. Can be. The reinforcing ribs 160 further improve the strength of the molding body 110 itself. As shown in FIG. 3, when the reinforcing rib 160 is brought close to the body sheet metal 10, even when an external force F acts on the molding main body 110, the molding main body 110 is less likely to be deformed, and its rigidity can be increased. .

FIG. 4 shows a modification of the side molding of the first embodiment. Hereinafter, the side molding M1 of the first embodiment
Only the parts different from the above will be described. The reinforcing ribs 160 'in this embodiment extend over the entire space between the adjacent clip holders. By providing the reinforcing ribs 160 'over the entire length of the side molding, a portion which is not easily bent can be eliminated, and the strength of the entire side molding can be improved.

FIG. 5 shows a further modification of the side molding of the first embodiment. Hereinafter, only portions different from the side molding M1 of the first embodiment will be described. The mounting tool in this embodiment is a bolt 150 '. The fastening part is configured as a bolt holder 140 '. The bolt holder 140 'is configured to be able to store the seat 152' of the bolt 150 '.

FIGS. 6 and 7 show a side molding M2 according to a second embodiment of the present invention. Hereinafter, only portions different from the side molding M1 of the first embodiment will be described.

As shown in FIG. 7, on the back surface of the decorative portion 220 of the molding body 210, a pair of lateral side walls 232 extending away from the decorative portion 220 and a top wall 234 connecting the ends of the lateral side walls 232 are formed. Hollow thick part 230
Is provided. Hollow thick portion 23 of molding body 210
The clip holder 240 integrally molded with the hollow thick portion 230 has substantially the same width as the hollow thick portion 230 and has a pair of side wall portions 242.
Are formed to face each other, and a retaining plate 246 is provided at the upper end thereof.
Are provided inward, one opening of the pair of side wall portions 242 serves as an insertion portion of the clip 250, and a locking body 244 is provided in the other opening. This clip holder 240 is also a hollow thick portion 230
And the body sheet metal 10 which is a counterpart of the mounting of the molding body 210.

On the other hand, the clip 250 corresponds to the shape of the clip holder 240, and its seat 252
A wide portion inserted between the respective side wall portions 242 of the clip holder 240, that is, a fixing portion 258, and each retaining plate 2
46, that is, the insertion portion 259
The locking claw 257 that is locked by the locking body 244 is provided on one end surface along the insertion direction of the seat body 252. Then, when the clip 250 is inserted through the opening on the insertion side of the clip holder 240 and the locking claw 257 is locked to the locking body 244 of the clip holder 240, the clip 250 is attached to the clip holder 240. Is attached in such a manner that it is prevented from coming off in both the insertion direction and the direction perpendicular to the insertion direction.

Also in this embodiment, the clip holder 24
0, the thickness of the side wall portion 242 is substantially equal to the thickness of the molding body 210. Even in this case, the presence of the hollow thick portion 230 causes the molding body 21
Clip holder 24 on the surface (decorative surface) 211
No sink marks, undulations, irregularities, and the like are generated in the portion where 0 is provided. Further, the side wall portion 242 of the clip holder 240
Is the hollow thick part 2 in the thickness direction of the molding body 210.
30 are aligned with the side walls 232 of the
Even if a tensile force, a compressive force or a moment acts in the thickness direction on the side wall 0, the side wall 232 of the hollow thick part 230 and the side wall 242 of the clip holder 240 cooperate to resist these forces, and 210 is prevented from being deformed.

FIGS. 8 and 9 show a side molding M5 according to a third embodiment of the present invention. The side molding M5 includes a molding main body 510 molded by a hollow injection molding method, and a mounting tool integrally formed therewith, that is, a clip 550. Mall body 5
10 and the clip 550 are both formed of resin. The molding body 510 has a substantially C-shaped cross section. The molding body 510 has a decorative portion 520, a hollow thick portion 530, and a fixing portion, that is, a partially thick portion 540.

The hollow thick portion 530 is located at the center in the width direction on the back side of the decorative portion 520 and overlaps a part of the decorative portion 520. The hollow thick portion 530 has a substantially quadrangular cylindrical shape, and includes a pair of side walls 532 extending at a substantially right angle in a direction away from the back surface of the decorative portion 520, and a top wall 534 connecting ends of the side walls 532. Is formed. The top wall 534 is separated from the decorative portion 520 by the side wall 532.

The partially thick portion 540 is formed by a hollow thick portion 530.
Are integrally formed. The partially thick portion 540 includes a pair of horizontal side walls 542 extending away from the top wall 534 and parallel to each other, and a pair of vertical side walls 544 extending away from the top wall 534 and parallel to each other. Become. The side wall portion 542 of the partially thick portion 540 is formed in alignment with the side wall 532 of the hollow thick portion 530.

The clip 550 is connected to the seat 552 by the connecting portion 5.
This is a configuration in which a locking body 556 is provided integrally with the intermediary of the locking member 556. Then, at the time of hollow injection molding of the molding body 510, the clip 550 is set in a mold, and the seat body 552 is set to the partial thick portion 54 inside the hollow thick portion 2.
0, whereby the clip 550 is integrally attached to the molding body 510.

FIG. 8 shows only a part of the molding body 510, and the clip 550 is integrally attached to at least two places of the molding body 510, as shown in FIG. Then, when the locking body 556 of the clip 550 is inserted and locked in the locking hole 12 provided in the body sheet metal 10 of the automobile body, the inside of the hollow thick portion 530 integrally formed with the molding body 510 is formed. A clip 550 is provided between the molding body 510 and the body sheet metal 10 which is the other side of the mounting of the molding body 510, and the molding body 510 is horizontally placed on the most protruding portion of the side surface of the automobile body via the plurality of clips 550. Be attached.

As described above, the partially thick portion 540 is provided inside the hollow thick portion 530 of the molding body 510, and the seat 552 of the clip 550 is embedded in the partially thick portion 540. By providing the partially thick portion 540, the cooling of the molten resin in this portion is delayed more than the other portions, so that sink, undulation, irregularities, etc. are generated on the inner peripheral surface of the hollow portion of the hollow thick portion 530. Even if there is, this hollow thick part 5
Due to the presence of 30, there is no occurrence of sink marks, undulations, irregularities, and the like on the surface (decorative surface) 511 of the molding body 510 corresponding to the portion where the clip 550 is attached. Further, even if the thickness of the partially thick portion 540 integrally formed inside the hollow thick portion 530 is increased, sinks, undulations, irregularities, etc. do not occur on the surface (decorative surface) 511 of the molding body 510. . Therefore, the partially thick portion 540
Of the clip 550 with respect to the molding body 510 can be increased.

As in the first embodiment, the side molding M5 of this embodiment has substantially the same thickness in all parts. Since the side wall 532 of the hollow thick part 530 and the side wall 542 of the partial thick part 540 are provided substantially aligned, a tensile force or a compressive force or a moment acts on the clip 550 in the thickness direction. It is clear, however, that these forces will be resisted. Although not shown in the drawings, it is needless to say that a reinforcing rib can be provided in this embodiment as shown in FIG. 1 or FIG.
The reinforcing ribs improve the strength of the molding body 510,
By providing the reinforcing ribs not only between the adjacent partially thick portions 540 but also over the entire length of the molding body 510, the molding body 510 resists the shearing force and the moment acting in the longitudinal direction. When the reinforcing rib is integrally formed with the partially thick portion 540, the partially thick portion 54
0 itself can be improved in strength. Similarly, reinforcing ribs can be provided in the third and fourth embodiments.

FIGS. 10 and 11 also show a side molding M6 according to a third embodiment of the present invention. Hereinafter, only different portions from the side molding M5 of the second embodiment will be described. The side molding M6 has a fixing portion inside the hollow thick portion 630, that is, a partial thick portion 640.
A seat body 652 of the bolt 650 is embedded in the
Other configurations are the same as those of the side molding M5. The bolt 650 is inserted into the insertion hole 13 of the body sheet metal 10, and the male screw portion 65 is provided inside the body sheet metal 10.
When the nut 14 is screwed into the 4, the molding body 610 is mounted on the automobile body.

FIGS. 12 and 13 show a side molding M7 according to a fourth embodiment of the present invention. At the center in the width direction inside the molding body 710, the hollow thick portion 730 is slightly flatter than the hollow thick portion 630.
Are integrally formed along the longitudinal direction thereof, and a partially thick portion 740 is integrally formed inside the hollow thick portion 730, and a mounting tool, that is, a seat of the bolt 750 is attached to the partially thick portion 740. Body 752 is embedded. Clip 75
Reference numeral 5 denotes a configuration in which a tubular portion 757 is provided at the base end of the connecting portion 756, and a female screw portion 758 is provided on the inner peripheral surface of the tubular portion 757. The male screw portion 754 of the bolt 750 is screwed into the female screw portion 758 of the cylindrical portion 757 provided at the base end of the clip 755, and the clip 755 is integrally attached to the molding body 710 via the bolt 750. ing.

Also in this side molding M7, since the hollow thick part 730 is provided inside the molding main body 710, a portion for burying the seat body 752 of the bolt 750 inside the hollow thick part 730 is provided. Even if the thick thick portion 740 is provided, the presence of the hollow thick portion 730 causes the molding body 7
In the surface (decorative surface) 711 of the portion 10 corresponding to the portion to which the bolt 750 is attached, almost no sink marks, undulations, irregularities, etc. occur.

[0040]

According to the first aspect of the present invention, the reinforcing ribs are provided between the adjacent fixing portions so as to be separated from the decorative portion. Can be improved, and the strength of the fixing portion against the moment in the longitudinal direction can also be improved.

According to the second aspect of the present invention, since the reinforcing ribs are provided between the adjacent fixing portions so as to be spaced apart from the decorative portion, the strength of the molding body can be maintained without causing sink marks or the like in the decorative portion. Can be improved, and the strength of the fixing portion against the moment in the longitudinal direction can also be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a first embodiment of a side molding according to the present invention.

FIG. 2 is a sectional view of the side molding of FIG. 1 cut along a section including a clip holder.

FIG. 3 is a cross-sectional view of the side molding of FIG. 1 cut along a cross-section including a reinforcing rib.

FIG. 4 is a perspective view showing a partially modified example of the side molding of FIG. 1;

FIG. 5 is a perspective view showing a further modification of the side molding of FIG. 1;

FIG. 6 is a perspective view showing a part of a second embodiment of the side molding according to the present invention.

FIG. 7 is a cross-sectional view of the cross section including the clip holder, which is obtained by cutting the side molding of FIG. 6;

FIG. 8 is a perspective view showing a part of a third embodiment of the side molding according to the present invention.

FIG. 9 is a cross-sectional view of the cross section including the clip holder, which is obtained by cutting the side molding of FIG. 8;

FIG. 10 is a perspective view showing a part of a fourth embodiment of the side molding according to the present invention;

FIG. 11 is a cross-sectional view of the cross-section including the bolt, which is obtained by cutting the side molding of FIG. 10;

FIG. 12 is a perspective view showing a part of a fifth embodiment of the side molding according to the present invention.

FIG. 13 is a cross-sectional view including a bolt and a clip holder.
Sectional drawing which cut | disconnected 2 side moldings.

[Explanation of symbols]

 M1M2 Vertical side wall 244 Locking body 150,250,550,755 Clip (mounting equipment) 150 ', 650,750 Bolt (mounting equipment) 160,160' Reinforcing rib

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takayuki Onda 1-4-1 Chuo, Wako City, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Kenji Hamana 1-4-1 Chuo Wako City, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Inventor Osamu Aoki Inside 1-1 Honda R & D Co., Ltd.

Claims (5)

[Claims] A molding body having a decorative part and a fixing part;
In a side protector molding for an automobile, which is combined with a mounting tool attached to the fixing portion, a hollow thick portion is provided on a back surface of the decoration portion, and the fixing portion is separated from the decoration portion to form the hollow thick portion. A side protector molding for an automobile, wherein a reinforcing rib is provided between adjacent fixing portions so as to be separated from the decorative portion. 2. A molding body having a decorative part and a fixing part,
In a side protector molding for an automobile, comprising a mounting tool integrally molded with the fixing portion, a hollow thick portion is provided on a back surface of the decoration portion, and the fixing portion is separated from the decoration portion to form the hollow portion. A side protector molding for automobiles, wherein a reinforcing rib is provided on a thick portion and separated from the decorative portion between adjacent fixing portions. 3. The side protector molding for an automobile according to claim 1, wherein the rib is formed integrally with the hollow thick portion. 4. The side protector molding for an automobile according to claim 1, wherein the rib is formed integrally with the fixing portion. 5. The side protector molding for an automobile according to claim 4, wherein the rib is provided continuously between adjacent fixing portions.