JPH08324340A - Resin insert for automotive corner piece - Google Patents

Abstract

PURPOSE: To eliminate the need for a slide core so as to enable molding using a small die by forming into an L-shaped cross section the glass-holding-part forming portion of a corner piece main body part and a mower sash part continuing to the underside of the forming portion, and mounting a glass holding piece in the middle position of the lower sash part. CONSTITUTION: In this resin insert 17, the glass-holding-part forming portion 23 of a bracket main body part (corner piece main body part) 19 and a lower sash part 15 continuing to the underside of the portion 23 are formed into a L-shaped cross section provided by cutting one side wall of a channel shape. Further, a channeled glass holding piece 41 that is increased in width in taper form at each longitudinal end is mounted in the middle position of the lower sash part 15. As a result, the channel shape having an opening in the perpendicular direction to a die opening direction is provided during molding, and one side wall of the channel shape is cut to provide the L-shaped cross section, thus eliminating the need for a slide core.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a resin insert for an automobile corner piece. In particular, the present invention is suitable for injection molding a resin insert.

Here, a mirror bracket mounted on a front door of an automobile will be mainly described as an example.
The present invention is also applicable to a corner piece mounted on a rear door.

[0003]

2. Description of the Related Art Conventionally, an insert for an automobile mirror bracket is usually a sheet metal insert manufactured as follows.

A relatively thick steel plate (usually 1.2 to 1.6)
mmt), the main body portion / attachment leg portion and the glass run portion (glass holding portion) are separately formed by press working, then both are welded, and further, a nut or the like is welded if necessary.

However, the sheet metal insert is, as described above,
Since a steel plate having a high specific gravity (specific gravity of iron: about 8) is used, it is difficult to meet the recent demand for weight reduction of automobiles, and it is necessary to press work separately and further weld, resulting in a large number of manufacturing steps.

For this reason, there has been proposed a resin insert which can be easily manufactured in a short time by injection molding, compression molding or the like by using a structural synthetic resin such as fiber reinforced plastic (FRP) which is easy to meet the demand for weight reduction of automobiles. There is. (JP-A-6-644
In this case, in the case where the glass run portion is also formed in the door, it is usually necessary to dispose a sheet metal lower sash (glass holding portion forming channel) as shown in FIG. .

The lower sash 11 has an undercut portion 11a formed at the same time when the sheet metal is processed by using a forming roller as shown in the drawing. And
The channel type glass run 1 is attached to the undercut portion 11a.
The slip-off preventing rib 13a formed in No. 3 is locked, and the separate glass run 13 is assembled to the lower sash 11 in a slip-off preventing state. In addition, 13b and 13b are glass holding lips.

From the viewpoint of further promoting the productivity of the resin insert for the bracket and the weight reduction of the automobile, it is conceivable to integrally form the lower sash when molding the resin insert of the mirror bracket.

[0009]

However, in the resin insert having the above structure, the bracket main body portion and the glass holding portion (glass run portion) forming portion of the lower sash portion usually need to have a channel shape.

In order to mold this channel shape, since the opening direction of the channel shape is orthogonal to the mold opening direction of the main body molding die for molding the bracket main body (corner piece main body), slide is performed. A mold is needed. Furthermore, when the glass curvature is large, such as when the side surface of the automobile is curved (curved), the slide mold may need to be divided. That is, the die is complicated and large, which is not desirable.

In view of the above, the present invention is a resin insert in which a corner piece portion and a lower sash portion are integrally molded with a structural synthetic resin, a slide core is not necessary, and further, a simple and small mold is used for molding. It is an object of the present invention to provide a possible resin insert for an automobile corner piece.

[0012]

The resin insert for an automobile corner piece of the present invention solves the above problems by the following constitution.

A resin insert for an automobile corner piece, in which a corner piece portion and a lower sash portion are integrally molded with a structural synthetic resin, wherein a glass holding portion forming portion of a corner piece main body portion and a lower portion of the glass holding portion forming portion are provided. The continuous lower sash portion is formed in an L-shaped cross section in which one side wall of the channel shape is cut off, and a glass holding piece is attached to an intermediate position of the lower sash portion.

[0014]

EXAMPLES The present invention will now be described in detail based on examples. Here, a mirror bracket will be described as an example, but the present invention is not limited to this, and the present invention can also be applied to a corner piece.

(1) The resin insert for a mirror bracket (hereinafter, simply referred to as “resin insert”) 17 in which the lower sash portion 15 is integrated in this embodiment is, as shown in FIGS. (Corner piece body) 19
The mounting leg portion 21 is integrally formed of structural synthetic resin.

Specifically, the bracket main body 19 has a substantially right-angled triangular shape, and the hypotenuse portion is the front pillar seal portion forming portion 22 and the perpendicular portion is the glass run portion forming portion 23. In the figure, reference numeral 31 is a polymer elastic body coupling hole.

A plurality of (three in the drawing) mirror mounting holes 33 are formed in a substantially triangular central portion of the bracket body 19.

The mounting leg portion 21 is composed of an inverted triangular connecting portion 25 and a lower sash portion 15. Connecting part 25
On both sides of the upper end of the vehicle, that is, at a position directly below the door belt line L, the vehicle exterior mounting seats 35, 35 for mounting the door panel.
However, at the lower end of the lower sash portion 15, vehicle interior mounting seat portions 37 for mounting door panels are formed. Each mounting seat 35, 37 has a mounting bolt hole 35.
a and 37a are formed.

Examples of the structural synthetic resin include polypropylene (PP) and polyamide (PA) containing fibers.

(2) In the resin insert 17 having the above structure, in this embodiment, the glass holding portion (glass run portion) forming portion 23 of the bracket main body portion (corner piece main body portion) 19 is formed.
The lower sash portion 15 that is continuous with the lower portion of the glass holding portion forming portion 23 is formed in an L-shaped cross section in which one side wall of the channel shape is cut off.

At this time, it is usually desirable to leave the side wall located outside the vehicle, which is the glass suction direction in the glass holding portion forming channel, that is, to cut off the side wall inside the vehicle.

A glass holding piece mounting hole 3 is provided at an intermediate portion (generally central portion in the illustrated example) of the lower sash portion 15.
9 is formed. In addition, an uneven surface 16 corresponding to a side surface of a glass holding piece 41 described later is formed in the portion.

The lower sash portion 15 is provided with a reinforcing rib 26 having an L-shaped cross section on the back surface side, on the side opposite to the glass holding piece mounting side, for reasons of strength.

In the resin insert 17 of this embodiment, one side wall of the channel shape in the direction intersecting with the mold opening direction of the main body forming mold is cut off and changed to an L-shaped cross section, so that the slide core becomes unnecessary. .

(3) NBR is provided on each of the hypotenuse part and the perpendicular part of the bracket body 19 of the resin insert having the above structure.
A polymer elastic body such as / PVC is coated to form a front pillar seal portion 27 that contacts the front pillar and a glass run portion 29 (see FIG. 3).

(4) Further, in this embodiment, the glass holding piece 4 as shown in FIG. 5 is provided at an intermediate position of the lower sash portion 15.
1 is attached (see FIGS. 6 and 7).

In the illustrated example, the glass holding piece 41 is a channel type in which both ends in the longitudinal direction are tapered and the width is expanded, and the polymeric elastic layer 43 and the glass sliding contact layer (the flocked layer in the illustrated example) are provided inside. 45 is formed, and a clip 47 that fits into the mounting hole 39 formed in the lower sash portion 15 is formed on one outer side. The elastic polymer layer 43
Is made of synthetic rubber such as NBR, and its thickness is usually
1 to 3 mm. Further, the glass holding piece 41 is usually formed by injection molding or the like with a hard synthetic resin such as PP / PA containing fibers, but the same material as the resin insert 17 may be used.

At this time, the glass holding piece 41 may have a length extending over substantially the entire length of the lower sash portion 15, but in many cases, the glass holding action may be partial as shown in the figure. In that case, even if the glass curvatures are different, there is an advantage that one glass holding piece 41 can be used. In addition,
The length of the glass holding piece 41 is usually the total length a = 30-
140 mm, depth of the polymeric elastic layer of the glass holder h = 1 to 3
mm, the opening width b = 5 to 10 mm, the width c of the glass introduction part c = 2
Set to 0 mm.

(5) As described above, the resin insert 17 having the above structure is formed by injection molding the polymer elastic body M, and further, the glass holding piece 41 is attached to the lower sash portion 15 to form a mirror bracket. Then, the mirror bracket is attached to the vehicle body (door panel), and the door mirror is attached to the mirror attachment portion for use.

[0030]

As described above, the resin insert for an automobile corner piece of the present invention has the glass holding portion forming portion of the corner piece main body portion and the lower sash portion continuous below the glass holding portion forming portion. A channel-shaped one side wall is cut out to form an L-shaped cross section, and a glass holding piece is attached at an intermediate position of the lower sash portion, whereby the following action and effect are achieved.

When the resin insert of the present invention is molded using a molding die, one side wall of a channel shape having an opening in a direction intersecting the mold opening direction is cut off to form L.
Since it has been changed to a V-shaped cross section, the slide core is not required.
Therefore, in the resin insert in which the corner piece portion and the lower sash portion are integrally molded with the structural synthetic resin, the slide core is not required, and the molding can be performed with a simple and small mold.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a state in which a glass run is attached to a conventional sheet metal lower sash.

FIG. 2 is a perspective view showing an example of a resin insert for a corner piece of the present invention (before assembling a glass holding piece).

3 is a sectional view of a mirror bracket using the insert of FIG. 2 taken along the line 3-3 of FIG.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a perspective view showing an example of a glass holding piece used in the present invention.

FIG. 6 is a perspective view showing an example of a resin insert for a corner piece of the present invention (after the glass holding piece is assembled).

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

[Explanation of symbols]

 15 Lower sash part 17 Resin insert 19 Bracket body part 21 Mounting leg part 23 Glass run part forming part 41 Glass holding piece

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[Procedure amendment]

[Submission date] March 26, 1996

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

However, since the sheet metal insert uses a steel sheet having a high specific gravity (iron specific gravity: about 8) as described above, it is difficult to meet the recent demand for weight reduction of an automobile, and
Since it is necessary to press work separately and further weld, the manufacturing man-hour increased.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006] Thus, using the structural synthetic resins such as easy fiber reinforced plastisol click meet the demands of the automobile weight reduction (FRP), resin insert that can be easily manufactured in a short time by injection-compression molding, etc. proposed that have (JP-a-6-64
445, etc.) . In this case, when forming the glass run portion also in the door, it is usually necessary to dispose a lower sash (glass holding portion forming channel) 11 made of sheet metal as shown in FIG.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

However, in the resin insert having the above-described structure, the glass holding portion (glass run portion) forming portion of the bracket main body portion and the lower sash portion usually needs to have a channel shape.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

To mold this channel shape,
Since the opening direction of the channel shape is orthogonal to the mold opening direction of the main body molding die that molds the bracket main body (corner piece main body), a slide mold is required.
Further, when the glass curvature is large due to the large curvature (curved surface) of the side surface of an automobile these days, there is a possibility that the slide mold may need to be divided. That is, the die is complicated and large, which is not desirable.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

A resin insert for an automobile corner piece, in which a corner piece portion and a lower sash portion are integrally molded with a structural synthetic resin, wherein a glass holding portion forming portion of a corner piece body portion and a lower portion of the glass holding portion forming portion are provided. Roasasshi section successive are both the one side wall of the channel shape is formed in an L-shaped cross section that is cut, characterized in that the glass retaining piece is attached to the intermediate position of the Roasasshi portion.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

In the illustrated example, the glass holding piece 41 is a channel type in which both ends in the longitudinal direction are tapered in width,
Inside, the elastic polymer layer 43 and the glass sliding layer (in the illustrated example flocking layer) is formed 45, a clip 47 is fitted into the mounting holes 39 formed in the Roasasshi portion 15 to the outside one side Has been formed. The polymeric elastic layer 4
3 is made of synthetic rubber such as NBR, and its thickness is usually 1 to 3 mm. Also, the glass holding piece 41
Is usually made of a hard synthetic resin such as PP / PA containing fibers by injection molding or the like, but the same material as the resin insert 17 may be used.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

[0030]

Automotive Konapi using resin insert and it for automobiles corner pieces of the present invention functions and effects of the present invention]
As described above, the glass has the glass holding portion forming portion of the corner piece body and the lower sash portion continuous below the glass holding portion forming portion formed in an L-shaped cross section in which one channel-shaped side wall is cut off. When both achieves the following operation and effects by the configuration of the glass holding piece is attached to the intermediate position of the Roasasshi portion.

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (2)

[Claims] 1. A resin insert for an automobile corner piece, wherein a corner piece body and a lower sash are integrally molded with a structural synthetic resin, the glass holding portion forming portion of the corner piece body and the glass holding portion forming. A lower sash part continuous to the lower part of the part is formed in an L-shaped cross section in which one side wall of the channel is cut off, and a glass holding piece is attached to an intermediate position of the lower sash part. Resin insert for corner pieces. 2. The resin insert for an automobile corner piece according to claim 1, wherein the glass holding portion forming portion is formed in an L-shaped cross section in which a channel-shaped inner side wall is cut off.