JP2001097137A - Belt molding and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt molding and its manufacturing method capable of preventing breakage of a screw thread of a hole for screwing a screw of the belt molding even when a torque load to the screw increases. SOLUTION: This belt molding 101 including a first hole 133 is attached to a car body by using a tapping screw 213 for screwing into the first hole 133. A clip (a supporting plate) 121 facing to the first hole 133 and having a second hole 129 for catching the screw thread of the tapping screw 213 is provided in the belt molding 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt molding attached to a vehicle body using screws and a method for manufacturing the same.

[0002]

2. Description of the Related Art For example, a vehicle door as shown in FIG.
(In the figure, a front door) A resin-made belt molding 1 having a substantially C-shaped cross section to be fitted to the upper edge portion (belt line) of the sash 3, 5 prevents interference with the sashes 3, 5. Therefore, the terminal portion has a partially cut shape.

[0003] For this reason, a separate attachment structure between the terminal portion of the belt molding 1 and the sashes 3 and 5 is required. FIG.
It is a figure which shows an example of the manufacturing method of such a belt molding 1.

As shown in FIG. 5A, first, a resin belt molding 1 manufactured by an extrusion molding method is cut off a part of a longitudinal end portion by a press cutting method. Next, as shown in FIG. 5 (b), a sash mounting portion 9 having a hole 7 is formed in the cut portion by injection molding.

[0005] As shown in FIG. 6, the belt molding 1 formed as described above is inserted into the sash 5, and is screwed into the hole 7 of the sash mounting portion 9 (tapping screw) 13. It is attached.

[0006]

However, in the resin belt molding 1 having the above structure, since the sash mounting portion 9 is made of resin, if the torque load of the screw 13 is increased, that is, if the screw 13 is excessively tightened, the sash mounting portion 9 is excessively tightened. There is a problem that the screw thread in the hole 7 of 9 is broken, the screw 13 turns idly, and the fastening force of the screw is lost.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a belt molding in which a thread of a hole on a belt molding side is not broken even if a torque load of a screw is increased, and a method of manufacturing the same. Is to do.

[0008]

According to a first aspect of the present invention, there is provided a belt molding having a first hole, which is attached to a vehicle body using a screw screwed into the first hole. A belt molding, wherein a reinforcing plate having a second hole facing the first hole and having a thread of the screw is provided in the belt molding.

[0009] By providing a reinforcing plate having a second hole in which the thread of the screw is hooked in the belt molding,
Even if the torque load of the screw is increased, the screw thread in the first hole of the belt molding is not broken.

[0010] As a method of manufacturing such a belt molding, as in the second aspect of the present invention, the belt molding has a first hole, and is attached to a vehicle body using a screw screwed into the first hole. A method of manufacturing a belt molding, wherein a step of partially cutting the belt molding, a step of attaching a reinforcing plate having a second hole on which the thread of the screw is hung to the cutout portion, And forming a first hole passing through the second hole of the reinforcing plate in the covered resin.

In the case of such a production method, from the viewpoint of easy attachment of the reinforcing plate,
It is preferable that the reinforcing plate has a clip shape that engages with a positioning portion formed on the belt molding other than a portion to be cut.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. First, the manufacturing method will be described with reference to FIGS.

As shown in FIG. 2A, a part of a longitudinal end portion of a resin belt molding 101 having a substantially C-shaped cross section and having no core metal is manufactured by a press cutting method. Cut through.

At the end of the cut belt molding 101, first and second convex portions 103 and 105 extending in a direction orthogonal to the longitudinal direction of the belt molding 101, and the first and second convex portions 103 are provided. , 105 are formed.

Further, the first and second convex portions 103, 105
On the inner side, positioning grooves 103a and 105a extending in the longitudinal direction of the belt molding 101 are formed. Then, a clip 121 formed by bending a thin plate of stainless steel or the like as a reinforcing plate is used as the first and second convex portions 103 and 10.
5 is attached.

As shown in FIG. 3, the clip 121 has a first holding portion which extends from one side of the main body portion 123 and cooperates with the main body portion 123 to hold the first convex portion 103 therebetween. 125, and a second holding portion 127 extending from the other side of the main body 123 and interposing the second convex portion 105 in cooperation with the main body 123.

The first and second holding portions 125 and 127 have positioning grooves 1 of the first and second convex portions 103 and 105, respectively.
Groove engaging portions 125a, 127a engaging with 03a, 105a
Are formed.

Further, the first and second holding portions 125, 12
7 has a concave portion 1 of the first convex portion 103 and the second convex portion 105.
Folded portions 125b, 127 that can contact the side surface on the 07 side
b is formed.

The central portion of the main body 123 is set to have a diameter at which the thread of the screw for attaching the belt molding 101 is applied, that is, a diameter between the diameter of the root of the screw and the diameter of the peak. A second hole 129 is formed.

As shown in FIG. 2B, the clip 121 having such a shape is connected to the first protrusion 10 of the belt molding 101.
3, attached to the concave portion 107 and the second convex portion 105. At this time, the first and second holding portions 125 of the clip 121,
The groove engaging portions 125a and 127a of 127 are formed inside the first and second convex portions 103 and 105 of the belt molding 101, and engage with the positioning grooves 103a and 105a extending in the longitudinal direction of the belt molding 101. Thus, positioning in a direction orthogonal to the longitudinal direction of the belt molding 101 is performed.

One of the bent portions 125b and 127b of the first and second holding portions 125 and 127 of the clip 121 is connected to the first and second portions of the belt molding 101.
Abut on the side surface on the concave portion 107 side of the convex portions 103 and 105,
The positioning of the belt molding 101 in the longitudinal direction is performed.

Next, as shown in FIG. 2C, the clip 121 is covered with a resin by an injection molding method to form a sash mounting portion 131. At this time, a first hole 133 that passes through the second hole 129 of the clip 121 is formed in the sash attachment portion 131.

In this embodiment, the belt molding 1
Since a tapping screw is used as a screw for attaching the screw 01, the diameter of the first hole 133 is set to be smaller than the diameter of the valley of the tapping screw.

The belt molding 101 thus formed
To the body (door 2 and sash 5) with a tapping screw 213
FIG. 1 shows a case where the mounting is performed by using the above. still,
FIG. 2A is a section taken along the line AA in FIG. 2C, and FIG.
FIG. 3 is a sectional view of a portion taken along a cutting line BB in FIG.

The tapping screw 213 is connected to the belt molding 1
01 is screwed into the first hole 133 of the sash mounting portion 131, and is also screwed into the second hole 129 of the clip 121 in the sash mounting portion 131.

According to the above configuration and manufacturing method, the clip 12 as a reinforcing plate having the second hole 129 in which the thread of the tapping screw 213 is threaded in the belt molding 101.
By providing 1, the thread in the first hole 133 of the sash mounting portion 131 of the belt molding 101 is not broken even if the torque load of the tapping screw 213 is increased.

The clip 121 has a belt molding 1
Positioning groove 103 serving as a positioning portion formed at 01
By forming the groove engaging portions 125a and 127a that engage with the a and 105a, the clip 121 can be positioned in a direction perpendicular to the longitudinal direction of the belt molding 101, and the first and second belt moldings 101 can be positioned. Folded portions 125b, 12 that come into contact with the side surfaces on the concave portion 107 side of the convex portions 103, 105
7b, and one of the bent portions 125b and 127b abuts the side surface of the first and second convex portions 103 and 105 of the belt molding 101 on the side of the concave portion 107. Since the positioning in the direction can be performed, the clip 121 can be easily attached.

[0028]

As described above, according to the first and second aspects of the present invention, the reinforcing plate having the second hole in which the thread of the screw is threaded is provided in the belt molding. Thereby, even if the torque load of the screw is increased, the screw thread in the first hole of the belt molding is not broken.

According to the third aspect of the present invention, since the reinforcing plate is in the form of a clip which engages with a positioning portion formed on the belt molding except for a portion to be cut, the mounting of the reinforcing plate becomes easy. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a belt molding according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a method for manufacturing the belt molding shown in FIG.

FIG. 3 is a perspective view of the clip of FIG. 1;

FIG. 4 is a diagram illustrating a belt molding.

FIG. 5 is a diagram illustrating a conventional method for manufacturing a belt molding.

FIG. 6 is a diagram illustrating a cross section of the belt molding of FIG.

[Explanation of symbols]

 101 Belt molding 121 Clip (reinforcement plate) 133 First hole 129 Second hole 213 Tapping screw (screw)

Claims (3)

[Claims] 1. A belt molding having a first hole and attached to a vehicle body using a screw screwed into the first hole, wherein the belt molding is opposed to the first hole in the belt molding. And a reinforcing plate having a second hole on which the thread of the screw is provided. 2. A method of manufacturing a belt molding having a first hole and attached to a vehicle body using a screw screwed into the first hole, the method comprising cutting a part of the belt molding, Attaching a reinforcing plate having a second hole to which the screw thread of the screw is applied to the scratched portion; and covering the reinforcing plate with a resin, and passing the covered resin through the second hole of the reinforcing plate. Forming a hole; and a method for manufacturing a belt molding. 3. The method for manufacturing a belt molding according to claim 2, wherein the reinforcing plate has a clip shape to be engaged with a positioning portion formed on the belt molding other than a part to be cut.