JP2002225642A - Weather strip terminal joining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily join both terminals of W/Ss each having a hollow seal portion 1 and a mounting body portion 2 formed integrally with the hollow seal portion 1 for gripping a sheet-metal flange protruded from an opening portion of an automobile. SOLUTION: The weather strip has the hollow seal portion 1 and a mounting body portion 2 containing the core metal 3 formed integrally therewith, the hollow seal portion 1 being formed of an EPDM sponge with an outer diameter of 14 mm, an inner diameter of 12 mm and a thickness of 2 mm and the mounting body portion 2 containing the core metal 3 being formed of an EPDM solid with a thickness of 2 mm. A EPDM sponge interposed member having a thickness of 2 mm, punched into a sectional shape corresponding to the hollow seal portion 1 and the mounting body portion 2 containing the core metal 3 is interposed between the terminals and then joined thereto in a predetermined method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for joining the ends of a weatherstrip. More specifically,
The present invention relates to a weatherstrip, comprising a hollow seal portion and a mounting body portion formed integrally with the hollow seal portion and fitted to a sheet metal flange. The present invention relates to a method for easily joining both terminals.

According to the present invention, the ends of the weather strip can be easily joined, so that the workability and cost required for joining can be reduced.

[0003]

2. Description of the Related Art Weather strips (hereinafter sometimes abbreviated as W / S) are mounted on a vehicle body and a window glass, have a sealing property, and prevent micro vibration of the vehicle body and vibration of the glass. At the same time, it is intended to buffer the body parts. Further, it is required that the dimensional variation and the variability in the installation of the automobile be absorbed, and the assembling workability is easy.

[0004] The cross-sectional shape, dimensions, material, form, etc. of the W / S depend on the structure of the part of the vehicle and also on the type of the vehicle, and further include a type having a built-in core material for sandwiching a sheet metal flange of the vehicle body. It is classified as a type without built-in materials.

For example, a hollow seal portion that forms cushioning and solidness between the outside and the inside of a vehicle, and a sheet metal flange formed integrally with the hollow seal portion are fitted to a trunk lid and a tailgate of an automobile. A W / S composed of a mounting main body and the like is used. Usually, the hollow seal portion is made of sponge, and the sheet metal flange fitting portion is made of solid.

FIG. 2 is a cross-sectional view showing an example of a conventional method for joining both terminals of W / S. In FIG. 2, reference numeral 1 denotes a hollow seal portion formed of, for example, an EPDM (ethylene-propylene-diene-terpolymer) sponge having an outer diameter of 14 mm, an inner diameter of 10 mm, and a thickness of 2 mm. Reference numeral 2 denotes a mounting main body formed of, for example, EPDM solid. 3
Is a steel core material. The hollow seal part 1 and the mounting main body part 2 are integrally formed by extrusion molding.

Reference numeral 5 denotes an EPDM sponge having an outer diameter of 12
This is a nested joint made of vulcanized hollow sponge rubber molded to a diameter of 9 mm, an inner diameter of 9 mm, a thickness of 1.5 mm, and a length of 20 mm. The nested joint No. 5 is adapted to be inserted into the hollow portion of the hollow portion 1, 1 ′.

Reference numeral 6 denotes an unvulcanized solid punched member, for example, an EPDM solid punched into a profile shape of the mounting body 2.

Reference numeral 7 denotes an unvulcanized sponge rubber ring formed to have an inner diameter of 12 mm, an outer diameter of 15 mm, and a thickness of 1.5 mm.

[0010] The conventional method for joining both ends of a W / S shown in FIG. 2 is as follows. First, a nested joint 5 of a vulcanized hollow sponge rubber is placed in an unvulcanized sponge rubber ring 7.
To its center. Next, the nested joint 5 is
1, 1 'is inserted into the hollow portion of the hollow seal portion. further,
The punching member 6 is placed under the ring 7 attached to the nested joint 5, and the mounting body 2 containing the core 3 and the core 3 ′
Then, the entire body is vulcanized by abutting the mounting main body 2 ′ having the built-in, and both ends are joined.

This prior art has several disadvantages. First
The disadvantage of this is that it requires three parts, each of which is manufactured differently from vulcanized, unvulcanized sponge and solid. The second drawback is that the workability is extremely poor and cumbersome for inserting the nesting joint 5 into the cavity of the hollow seal portion 1, 1 'which is soft and easily deformed and has a low inner smoothness. is there. A third disadvantage is that the step of inserting the nested joint 5 into the unvulcanized sponge rubber ring 7 requires the mounting body 2 containing the core 3 and the mounting body 2 ′ containing the core 3 ′. At least three steps are required, including a step of abutting and a step of vulcanizing the whole to join both ends.

That is, in the case of this prior art, the number of parts is large and the number of steps for joining both ends is large.
This was a factor that raised the overall work cost.

[0013]

Therefore, the main problem to be solved by the invention is that it was not possible to easily join both ends of the W / S with built-in core material.

Another problem to be solved by the present invention is that a hollow seal portion that forms cushioning and solidness between the outside and the inside of the vehicle,
Uses a W / S that is integrally formed with the hollow seal part and has a mounting body that is fitted and fitted with a sheet metal flange such as an automobile trunk gate or trunk lid. Thus, the joining operation cost and the component cost could not be reduced by easily joining.

Further problems and advantages to be solved by the invention will be clarified one by one below.

[0016]

The inventor of the present invention does not use the nested joint 5 as in the prior art to join the hollow seal portions 1, 1 ', but instead connects the hollow seal portions 1, 1' and the mounting body. The use of an interposer having the same profile as the parts 2, 2 'was considered.

As a result, the present invention has been achieved by joining both ends of a W / S having a mounting body portion in which a hollow seal portion and a hollow seal portion are integrally formed and a sheet metal flange is fitted. In doing so, an insertion member having the same profile as the combined profile of the hollow seal portion and the mounting main body portion is inserted and joined between both ends of the W / S.

In the present invention, the interposed member having the same profile as the combined profile of the hollow seal portion and the mounting main body portion means a contour shape in which the hollow seal portion and the mounting main body portion are combined. It has the shape of a projected view that projects the entire W / S with its parts and mounting body.

In the present invention, the material of the insertion member having the same profile as the combined profile of the hollow seal portion and the mounting main body may be the same material as the hollow seal portion and the mounting main body, or a different material.

[0020]

FIG. 1 is a sectional view showing an embodiment of the present invention. In FIG. 1, 1 and 1 ′ are EPDMs.
It is a hollow seal part having an outer diameter of 14 mm, an inner diameter of 10 mm, and a thickness of 2 mm manufactured by using a sponge.

Reference numerals 2 and 2 'denote a mounting main body to be fitted to a sheet metal flange made of EPDM solid. 2,
The 2 ′ mounting body has a steel core material 3,
3 'is inserted in the longitudinal direction, and the sheet metal flange is fitted with the core members 3, 3'.

Reference numeral 4 denotes a 2 mm-thick sponge made of EPDM, which is an insertion member formed by punching and molding the hollow seal portion 1 and the mounting main body portion 2 into a projection.

According to the present invention, in order to join both ends of the W / S, an insertion member 4 is inserted between the left and right W / S terminals, and then vulcanized and joined by a predetermined means.

[0024]

As described above, according to the present invention,
Hollow seal portions 1 and 1 'that form cushioning and solidness between the outside and the inside of the vehicle are integrally formed, and a mounting body portion to which a sheet metal flange such as an automobile tailgate or trunk lid is fitted and mounted. 2 and 2 'are punched and formed into a shape in which the hollow seal portions 1 and 1' and the mounting body portions 2 and 2 'are integrally projected.
Since it is inserted and joined in accordance with the contour of the terminal of S, it is simpler and more efficient than the conventional technique which requires a complicated operation of inserting the nested joint 5 into the cavity of the hollow seal portions 1 and 1 '. And thus reduce operating and parts costs. For reference, the work cost per location according to the present invention is about 10 times less than that according to the prior art.
%.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing an example of a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow seal part 1 'hollow seal part 2 Mounting main body part 2' mounting main body part 3 Core material 3 'Core material 4 Interposition member 5 Nested joint 6 Punching member 7 Ring

Claims (1)

[Claims] 1. A weather comprising a hollow seal portion and a mounting body portion containing a core material, which is formed integrally with the hollow seal portion and is fitted to a sheet metal flange protruding from an opening of an automobile. A method of joining strip ends together,
After inserting a sponge insertion member 4 formed into a cross-sectional shape into which a weather strip composed of the hollow seal portion 1 and the mounting main body portion 2 is integrated, a predetermined distance is inserted between the terminals of the hollow seal portion 1 and the mounting main body portion 2. A method of joining the ends of a weatherstrip, comprising vulcanizing and joining by the method of (1).