JP2001260767A - Reinforcing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the rollability and universelness of a reinforcing member built into a weatherstrip. SOLUTION: The reinforcing member for a weatherstrip has a plurality of opposite reinforcing member strips 2 and 2' connected together and is built into the welt part of the weatherstrip. A first connecting piece 3 and a second connecting piece 4 project from the long side of one of the opposite reinforcing member strips 2 and are combined and integrated together to form a combining point 5 where the long side of the one reinforcing member strip 2 is connected to the long side of the other of the opposite reinforcing member strips 2'. The connecting pieces are disposed as close to the connecting pieces of vertical sides as possible so that the reinforcing member is capable of being rolled and has universalness. Preferably, the reinforcing member is disposed near the connection between the vertical side and the horizontal side of the weatherstrip, i.e., at a corner when the weatherstrip with the reinforcing member built therein is bent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing member used for weather strips for automobiles and the like. More specifically, the present invention provides a covering material that partially covers each part of a vehicle,
For example, the present invention relates to a structure of a reinforcing member used for an opening trim or the like, particularly, a weather strip and disposed inside the weather strip.

[0002]

2. Description of the Related Art Prior art of a reinforcing member will be described with reference to a weather strip in which the reinforcing member is mainly used.
/ S may be abbreviated to a vehicle body and a window glass of a motor vehicle, have a sealing property, prevent micro vibration of the vehicle body and vibration of the glass, and have a purpose of buffering a part of the vehicle body. Further, it is required that the dimensional variation and the variability in the construction of the automobile be absorbed, and that the assembling workability be easy.

[0003] The cross-sectional shape, dimensions, material form, etc. of W / S
It depends on the structure of the part of the vehicle and the type of the vehicle, and is further classified into a type having a built-in reinforcing member for holding a sheet metal flange of a vehicle body and a type having no built-in reinforcing member.

For example, the body side of an automobile (FIG. 2)
11), a side window (12 in FIG. 2), a trunk lid (13 in FIG. 2), and a tailgate (14 in FIG. 2) are mounted with a W / S including a reinforcing member.

FIG. 3 is a sectional view of an example of a W / S of a type having a built-in reinforcing member used for a tailgate. The W / S (15) with a built-in reinforcing member has a reinforcing member (16) built in solid rubber and a sponge (17, 2).
0) is formed integrally with the solid part. The sheet metal flange (18) is inserted into the reinforcing member (16) bent in a substantially U-shape, and the sheet metal flange (18) is firmly clamped by the reinforcing member (16). It is attached to (18). Incidentally, (19) is called a holding lip, (21) of the sponge part (17) is called a seal lip, and (20) of the sponge part is called a drain lip.

[0006] When mounting a W / S (15) of a type having a built-in reinforcing member as shown in Fig. 3 on a vehicle body, the requirement is to follow the radius of curvature of the sheet metal flange (18). This is to firmly clamp the flange (18).

Further, a W / S (1
In the case where 5) is mounted on the vehicle body by sandwiching the sheet metal flange (18) of the vehicle body, what is required is that the W / S drainer lip (20) does not undulate or the hollow portion does not bend. This can be achieved by wearing
/ S flexibility.

Therefore, the requirements for the reinforcing member are to easily follow the shape of the sheet metal flange, to firmly clamp the sheet metal flange, and to have flexibility.

FIG. 4 is a conceptual diagram showing an example of a main part of an apparatus for manufacturing a W / S incorporating a reinforcing member by an extrusion molding method. The reinforcing member (22) is usually from a reinforcing member manufacturer with a thickness of 0.4 mm to 0.5 mm, a length of 500 m,
It is obtained in 00m and 2000m transaction units. The reinforcing member (22) is wound around a reel (23) and is bent into a desired shape by passing through a pre-bender (24). The bent reinforcing member (22) is introduced into an extruder (25). The periphery of the reinforcing member (22) is covered with a predetermined material by a head (not shown) of the extruder (25) to form a reinforcing member built-in W / S (26), and a cooling tank (not shown) is formed. After that, it is taken by the take-up machine (27).

During the extrusion process, the reinforcing member (22)
Is tensioned by two devices, a reel (23) and a take-up machine (27), and the formed reinforcing member built-in W / S (26) is taken-up by the take-up machine (27). As described above, in this step, before the reinforcing member (22) is introduced into the extruder (25), it is bent into a predetermined shape by the pre-bender (24) in advance.

Therefore, the requirement for the reinforcing member (22) is that the reinforcing member (22) is easily bent into a predetermined shape in advance by the pre-bender (24) before being introduced into the extruder (25).

FIG. 5 is a view showing an example of a conventional typical reinforcing member, wherein A is a partial plan view and B is a partial perspective view. (28) is a conventional reinforcing member, in which a strip-shaped reinforcing member piece (29) of the conventional reinforcing member is connected to the first connecting piece (3).
0) and the second connecting piece (31). There are various sizes of the reinforcing member piece (29) of the conventional reinforcing member, for example, a length of 35 mm and a width of 2 mm.
As described above, since the conventional reinforcing member (28) is used in a unit length of, for example, 500 m, 1500 m, 2000 m, etc., the reinforcing member piece (29) of the conventional reinforcing member is used.
Will be at least 250,000.

In the extrusion molding step, such a conventional reinforcing member (28) is moved in the extrusion direction Y at a constant speed by a reel (2).
Drawn from 3).

The width of the first connecting piece (30) is, for example, about 2 mm and the length is about 1 mm. Second connecting piece (31)
Has a width of about 0.5 to 1 mm and a length of about 1 m, for example.
m. The width of the second connecting piece (31) is equal to the width of the first connecting piece (3
0) is smaller than the width of
This is because when the sheet metal flange (18) of the vehicle body is clamped, it can be easily broken at the location of the second connecting piece (31).

A conventional reinforcing member (2) of the type shown in FIG.
8) The pre-bend is possible, and one of the connecting pieces (30) of the reinforcing member when mounted on the sheet metal flange of the vehicle body.
(B in FIG. 5) is difficult to cut.

However, this conventional reinforcing member (28)
Is disadvantageous in that the flexibility, which is another requirement of the W / S with a built-in reinforcing member, cannot be completely satisfied.

[0017]

Therefore, the main problem to be solved by the present invention is to easily bend the reinforcing member incorporated in the W / S into a predetermined shape before introducing it into the extruder, that is, prebend. In addition, when it is mounted on the body of an automobile after molding, it is not possible to provide a structure that satisfies both the requirement of exhibiting flexibility. Further problems and advantages to be solved by the invention will be clarified below.

[0018]

As described above, W / S
The reinforcing member incorporated in the horn is usually 0.4 mm to 0.4 mm in thickness.
5 mm, length 35 mm, width 2 mm steel reinforcing member pieces are connected to each other by connecting pieces, so that a total length of 50
It is traded in units of 0m, 1500m or 2000m.

When extruding W / S using a long reinforcing member in which a plurality of opposing strip-shaped reinforcing member pieces having the above-mentioned shapes are connected by connecting pieces, a roll is used. It is fed into the gap and bent into a U-shape or U-shape for use. Conventionally, there is a reinforcing member having one connecting piece, but in this case, when the reinforcing member is bent, if there is only one connecting piece on the vertical side of the reinforcing member, the reinforcing member piece is twisted, As a result, there is a problem that it is not possible to pass through the nipple of the extruder even when bending.

Therefore, when bending the long reinforcing member incorporated in the W / S, a connecting piece is provided on the vertical side when the bending is performed, and the connecting piece is pre-bent so as not to cause twisting. It is necessary to provide. In order to solve this, it is necessary to additionally provide another connecting piece on the other side of the reinforcing member when it is bent. Therefore, two connecting pieces are required.

In this case, it is a problem where the two connecting pieces are provided on the reinforcing member main body. Although the present inventors do not wish to be bound by theory, referring to FIGS. 6 and 7, the position of the connecting piece of the reinforcing member and the state in which the W / S incorporating the same is bent. Will be described.

In order to mount a built-in W / S of a reinforcing member in which a plurality of reinforcing member pieces are connected by a connecting piece to an opening of an automobile, the W / S is bent to fit a curved surface having a predetermined radius of curvature. is necessary. FIG. 6 is a conceptual diagram showing the type of the reinforcing member and the distance between the center of the bending constraint and the lip when the W / S incorporating the reinforcing member is attached to a bent portion having a predetermined radius of curvature. FIG. 6A shows a W / S (3) incorporating a reinforcing member (32) having a connecting piece (33) provided in the middle.
4 shows a cross section of FIG. (36) shows this type of W
/ S is the center of bending constraint when the lip (35) is bent inward, and is located substantially at the center of W / S.
a is the distance between the lip (35) and the center of the bending constraint (36).

FIG. 6B shows a cross section of a W / S (34) incorporating a reinforcing member (32) provided with the connecting piece (33) deviated slightly rightward from the center. (36) is a bending constraint center when this type of W / S is bent so that the lip (35) is on the inside, and is slightly deviated from the center of the W / S. b is the distance between the lip (35) and the center of the bending constraint (36).

FIG. 6C is a cross section of a W / S (34) incorporating a reinforcing member (32) provided with two connecting pieces (37) and (38) at corner positions when the W / S is bent. Is shown. (36) is a bending constraint center when this type of W / S is bent such that the lip (35) is on the inside, and is located on the vertical side of the bent W / S. c
Is the distance between the lip (35) and the center of restraint of bending (36).

In general, when a material is bent, the outside of the bent portion is pulled and the inside is compressed. That is, two different regions are generated in the same material, a region where a tensile stress is generated (hereinafter referred to as a tensile region) and a region where a compressive stress is generated (hereinafter referred to as a compressed region). The material is excellent in tensile stress due to its material performance, but cannot follow the compressive stress. Therefore, the larger the compression area, the more distortion (wrinkles) occurs in that area, which lowers the commercial value. This phenomenon can be applied to a W / S having a built-in reinforcing member.

FIG. 7 shows a W / S having a boundary at the bending restraint center (36) when the W / S incorporating the reinforcing member shown in FIG. 6 is bent so that the lip (35) is inside. It is a figure which shows typically the compression area | region (40) and the tension area | region (39) of the bending part of FIG.

FIG. 7A shows a W / S with a built-in reinforcing member shown in FIG. 6A, that is, a W / S with a built-in reinforcing member connected by a connecting piece arranged around a plurality of reinforcing member pieces. It is a conceptual diagram at the time of bending so that the lip (35) may become inside at the curvature radius of. From the figure, the compression area (40)
It can be easily inferred that many distortions (wrinkles) occur. That will reduce the appearance value of W / S. Therefore, it is understood that it is not preferable to dispose the connecting piece at the center of the reinforcing member piece.

FIG. 7B shows a W / W of the type shown in FIG. 6C.
S, that is, a reinforcing member (3) provided with two connecting pieces (37) and (38) at corner positions when W / S is bent.
The W / S with the built-in 2) is lip (3
It is a conceptual diagram at the time of bending so that 5) might become inside. From the figure, distortion (wrinkle) generated in the compression area (40)
Can be easily estimated to be smaller than that of FIG. 7A.

As will be understood from the above description, distortion (wrinkles) generated in the compression area when a W / S incorporating a reinforcing member in which a plurality of reinforcing member pieces are connected by connecting pieces is bent. In order to reduce the amount as much as possible, it is necessary to make the restraining position (boundary position of tension / compression) at the time of bending work as close as possible to the center R of bending. Therefore, it is understood that the connecting piece is preferably disposed at the corner closest to R when the W / S to be built is bent.

Therefore, a means for solving the problem is to form at least two connecting pieces from one long side of one of the plurality of opposing reinforcing member pieces constituting the long reinforcing member. In this case, the at least two connecting pieces are merged and integrated so as to be joined together with the long side of the opposing reinforcing member piece.

According to the present invention achieved in this manner, a plurality of opposing strip-type reinforcing member pieces are connected, and the first connecting piece and the second connecting piece from the long side of one of the opposing reinforcing member pieces. The connecting piece is projected, the first connecting piece and the second connecting piece are merged and integrated to form a merging point and are continuously connected to the long side of the opposing reinforcing member piece for a predetermined length. It is a weatherstrip which incorporates the reinforcing member formed with.

In a preferred embodiment of the present invention, the two connecting pieces formed on the reinforcing member piece of the reinforcing member incorporated in the W / S are formed in a horizontal direction when the W / S incorporating the reinforcing member is bent. It is disposed near the joint between the side and the vertical side, that is, at the corner. Thereby, when the reinforcing member built-in W / S is bent with a predetermined radius of curvature, the outside of the bent portion, that is,
The inside of the bent portion, that is, the compression region, is extremely small as compared with the tension region, and as a result, the amount of distortion (wrinkles) generated in the compression region is reduced, and the appearance value of W / S is prevented from lowering. .

The reinforcing member incorporated in the W / S of the present invention comprises:
The first connecting piece and the second connecting piece protruding from the long side of one of the opposing reinforcing member pieces are merged and integrated to form a merging point and are joined to the long side of the other opposing reinforcing member piece. You.
At this time, the first connection, the second connection piece, and a part of the long side of the reinforcing member piece form a polygonal space, but when there are two connection pieces, a triangular space is formed.

The thickness of the first connecting piece and the second connecting piece for connecting the reinforcing member pieces of the reinforcing member incorporated in the W / S of the present invention is not particularly limited. However, finally, it is bent into a substantially U-shape to be built in the W / S, is formed into a so-called W / S with a built-in reinforcing member, and is used by being bent in the length direction to clamp the sheet metal flange. Therefore, it is preferable that the first connecting piece (FIG. 1B to be described later) be processed to be thin or provided with a weakened portion such as a cutting line so as to be easily cut.

Hereinafter, the present invention will be described in detail with reference to examples.

Embodiment 1 FIG. 1 is a conceptual view showing Embodiment 1 of a reinforcing member incorporated in a W / S according to the present invention, wherein A is a partial plan view, and rectangular reinforcing members opposing each other. Piece (2),
The first connecting piece (3) and the second connecting piece (4) protrude as close as possible from the long side of one of the reinforcing member pieces (2) of (2 ′), and the first connecting piece (3) and the second connecting piece (2) protrude. The reinforcing member for a weatherstrip is shown in which the connecting pieces (4) are merged and integrated to form a merging point (5) and are joined to the long sides of the opposing reinforcing member pieces (2 ').

B is a perspective view showing a state in which the reinforcing member 1 shown in the plan view A is roll-bent in a substantially U-shape by a pre-bender (24), and the reinforcing member 1 is rotated 90 degrees to the left. .

In order to bend as shown by B, the first connecting piece (2) and the second connecting piece (2 ') of the reinforcing member (1 in FIG. 1A) which has been processed into a flat and long length. Is bent and formed into one of two bending lines so that the cross-section becomes substantially U-shaped in the length direction.

When the reinforcing member (1) is turned to the left by 90 degrees when it is bent into a substantially U-shape as described above, the reinforcing member (1) projects from the lateral side (6) of one of the reinforcing member pieces (2). Reinforcing member piece (2 ') facing the first connecting piece (3)
Is connected to a corner formed by the horizontal side (7) and the vertical side (8), and the second connection piece (4) protruding from the vertical side (9) of one of the reinforcing member pieces (2) faces the reinforcement. The member piece (2 ') is connected to a corner formed by the horizontal side (7) and the vertical side (8).

As a result, the first connecting piece (3), the second connecting piece (4) and one of the reinforcing member pieces (2) have a polygonal side (6) and a part of the vertical side (9). A space (10) is formed.

When the reinforcing member (1) bent into the shape indicated by B is built in the W / S and the finally formed W / S with the built-in reinforcing member is actually used, the sheet metal flange (18) is used. To be pinched. The sheet metal flange (18) includes not only a straight portion but also a bent portion having a minimum radius of curvature of 25 mm, for example. Therefore, the reinforcing member built-in W / S
Must be able to bend freely with this radius of curvature.

For this purpose, when the W / S incorporating the reinforcing member (1) is mounted by sandwiching the sheet metal flange (18 in FIG. 3), the first connecting piece (3) is easily cut. It is preferable that the thickness of the first connecting piece (3) is extremely thinner than that of the second connecting piece (4), or that a weakened portion such as a cutting line is provided.

The thickness of the first connecting piece (3) and the second connecting piece (4) is not limited to a numerical value, but the W / S incorporating the reinforcing member (1) shown in FIG. When the sheet metal flange (18 in FIG. 3) is clamped, the first connecting piece is not required without using a special jig or tool, that is, considering that it is ideal that the bending process can be performed by human power. (3)
Is 1 mm or less, preferably 0.5 mm or less.

[0043]

As described above, the reinforcing member incorporated in the W / S according to the present invention includes the first connecting piece (3) extending from the long side of one of the opposing reinforcing member pieces (2). And the second connecting piece (4) is protruded, and the first connecting piece (3) and the second connecting piece (4) are merged and integrated to form a merging point (5) to face the reinforcing member piece ( 2 ') Since the state of being connected to the long side continuously forms a predetermined length, it can be easily bent by bending by a pre-bender and has flexibility. Further, two connecting pieces formed on the reinforcing member piece of the reinforcing member incorporated in the W / S of the present invention are formed by bending the W / S with the reinforcing member incorporated into the horizontal and vertical sides. In the case where the reinforcing member built-in W / S is bent at a predetermined radius of curvature by disposing it near the joint, that is, at the corner,
The outside of the bent portion, that is, the inside of the bent portion, that is, the compression region becomes extremely small as compared with the tension region. As a result, the amount of distortion (wrinkles) generated in the compression region becomes small,
A reduction in the appearance value of W / S is prevented.

[Brief description of the drawings]

FIG. 1 is a conceptual view showing an embodiment of a reinforcing member incorporated in a W / S according to the present invention, wherein A is a plan view of a part of the reinforcing member, and B is a perspective view showing a part of a state bent by a prebender. FIG.

FIG. 2 is a perspective view showing a place where a weather strip of an automobile is mounted.

FIG. 3 is a cross-sectional view of an example of a weather strip of a built-in reinforcing member type.

FIG. 4 is a conceptual diagram showing an example of a manufacturing apparatus for a weather strip with a built-in reinforcing member.

FIG. 5 is a conceptual diagram showing an example of a conventional reinforcing member, where A is
FIG. 3B is a partial plan view, and FIG.

FIG. 6 is a cross-sectional view showing a positional relationship between a center of bending restraint and a weather strip when a weather strip incorporating various reinforcing members is bent, and A is a diagram relating to a case where a conventional reinforcing member is used; FIG. 2B is a diagram relating to the use of a conventional reinforcing member in which the bending restraint center is slightly deviated from the center of W / S, and FIG. C is a diagram relating to the use of the reinforcing member of the present invention.

FIG. 7 is a conceptual diagram showing the relationship between the center of bending restraint and the size of a tensile region and a compression region when a weather strip incorporating various reinforcing members is bent, and A is a conventional reinforcing member. B is a diagram related to the one using the reinforcing member of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcement member 2 Reinforcement member piece 2 'Reinforcement member piece 3 1st connection piece 4 2nd connection piece 5 Confluence point 6 Lateral side of bent reinforcement member 7 Lateral side of bent reinforcement member 8 Reinforcement of bent reinforcement member Vertical side 9 Vertical side of bending-processed reinforcing member 10 Space portion 11 Body side 12 Side window 13 Trunk lid 14 Tail gate 15 Reinforcement member built-in type weather strip 16 Reinforcement member 17 Sponge portion 18 Sheet metal flange 19 Holding lip 20 Drip lip 21 Seal lip 22 Reinforcement member 23 Reel 24 Prebender 25 Extruder 26 Reinforcement member built-in weather strip 27 Take-up machine 28 Conventional reinforcement member 29 Conventional reinforcement member reinforcement member piece 30 First connection piece 31 Second connection piece 32 Reinforcement member 33 connecting piece 34 weatherstrip 35 lip 36 Bending restraint center 37 First connection piece 38 Second connection piece 39 Tension area 40 Compression area

Continued on the front page (72) Inventor Nobori Mitogawa 2-2-11, Matsuhama-cho, Fukuyama City, Hiroshima Prefecture Inside Hiroshima Kasei Co., Ltd. (72) Tomonori Hamada 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Industrial Co., Ltd. In-company (72) Inventor Manabu Goro 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation F-term (reference) 3D024 AA02 AA17 AB08

Claims (3)

[Claims] An opposing strip-shaped reinforcing member piece (2, 2 ').
Are connected to each other, and the first connecting piece (3) and the second connecting piece (3) are connected from the long side of one reinforcing member piece (2) of the opposing reinforcing member pieces.
The connecting piece (4) is protruded, and the first connecting piece (3) and the second connecting piece are merged and integrated to form a merging point (5), and the long side of the reinforcing member piece (2 ′) facing the long side. A reinforcing member continuously formed to have a predetermined length in a state of being joined to the reinforcing member. 2. The reinforcing member according to claim 1, wherein the reinforcing member is bent so as to have a substantially U-shaped cross section in the length direction around the junction (5). . 3. The substantially U-shape of the reinforcing member is shifted to the left by 9
Observed in a state rotated by 0 degree, one reinforcing member piece (2)
The first connecting piece (3) protruding from the lateral side (6) is connected to a corner formed by the lateral side (7) and the vertical side (8) of the opposing reinforcing member piece (2 '). Reinforcement piece (2)
The second connecting piece (4) protruding from the vertical side (9) is connected to the corner formed by the horizontal side (7) and the vertical side (8) of the opposing reinforcing member piece (2 '). , First connecting piece (3)
A part of the horizontal side (6) and the vertical side (9) of the second connecting piece (4) and one of the reinforcing member pieces (2) is a polygonal space (1).
The reinforcing member according to claim 2, wherein 0) is formed.