JPS60264238A - Manufacture of weatherstrip - Google Patents

Abstract

PURPOSE:To eliminate burr removing and blocking work by extending a lip portion of one of two weatherstrips that have blocking and different widths, and by forming an integral shape by connecting the lip portion with bottom and side portions of the other weatherstrip. CONSTITUTION:The burr generated on the side edges of lip portions 15 and 16 of weatherstrips 6 and 7 is removed and a blocking is provided on inside surfaces of bottom portions 9 and 10 and outside surfaces of the lip portions 15 and 16. Then, the bottom portion 10 and a side portion 13 of the weatherstrip 7 is cut, and a joint lip portion 20 is formed and is abutted to the edge portion of the weatherstrip 6 and placed in a mold. A synthetic rubber and etc. are injected therein and a joint bottom portion 21 and a joint side portion 22 are connected with the bottom portions 9 and 10 and the side portions 12 and 13 to make an integral shape. The inside surface of the joint bottom 21 is abutted to a piece of glass tightly and securely, resulting in elimination of blocking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a weather strip that is attached to, for example, an automobile door equipped with sliding window glass.

[Conventional technology]

Generally, the doors of automobiles equipped with sliding window glass are equipped with weather strips to prevent the infiltration of wind and rain. This weather strip is constructed as shown in FIGS. 3-5. That is, the weather strip
is installed in the window frame 4 of a door 3 of an automobile equipped with a sliding window glass 2 so as to come into contact with the side edge of the sliding window glass, and is attached to the window frame 4. First installed
weatherstrip piece 6; a second weatherstrip piece 7 installed in the door body 5; and the first weatherstrip piece 7. It consists of a joined weather strip piece 8 which joins the second weather strip piece 6.7. Each weather strip piece 6°7.8 has a base portion 9°10.11 formed in a long plate shape, and a base portion 9,10.1.
side parts 12, 13.14 provided on both sides of the base part 9, 10.11 so as to protrude toward the inner surface of the base part 9, 10.11;
．． Tongue-shaped lip portions 15, 16 and 17 provided on the edges of 13 and 14 protruding in directions facing each other are integrally formed of synthetic rubber or the like. Furthermore, the portion of the weather strip 1 that the window glass 2 contacts, that is, the inner surface of the bottom portion 9, 10° 11 of each weather strip piece 6, 7.8 and the lip portion 15, 16.1.
A hair body 18 made of nylon or the like is flocked on the outer surface of the window glass 7 to prevent sliding when the window glass slides.

Further, the first weather strip piece 6 has a side portion 12.
An engagement groove 19 that engages with the window frame 4 is formed on the outer surface of the window frame 4, and a second weather strip piece 7 area is formed in order to securely engage the engagement groove 19 with the window frame 4. It is formed with a wide width.

On the other hand, the weather strip 1 constructed as described above has been manufactured using the following manufacturing method.

Here, the explanation will be limited to the method of manufacturing the IJ tube in the portion indicated by the arrow V in FIG. 3.

First, the first weather strip piece 6 and the second weather strip piece 6 are
The strip pieces 7 are each formed separately by injection molding, and the edges of the lips 15, 16, etc. are removed. and the first and second weather strip pieces 6.
Base of 7 9. Adhesive is applied to the inner surface of the lO and the outer surface of the lip portion 15.16 to adhere the bristles 18. Thereafter, the joint end of the eleventh second weather strip piece 6.7 is placed in a mold (not shown) that forms the joint weather strip piece 8, and synthetic rubber is injected into the mold. As a result, the joined weatherstrip piece 8 is integrally formed so as to be continuous with the first and second weatherstrip pieces 6.7. After removing the burrs that have formed on the side edges of the joining weather strip piece lip part 17, the weather strips are applied to the inner surface of the base part 11 and the outer surface of the lip part 7).
Apply hair transplantation in the same manner as +7 tip piece 6.7.

[Problem that the invention seeks to solve]

However, with the above-mentioned manufacturing method, each time each weatherstrip piece is formed, it is necessary to remove the burrs that have formed on the side edges of the lip part and to add flocking to the base part and lip part. Since this is necessary, the number of work steps increases, resulting in a problem of poor work efficiency. especially,
1st. In cases where the joining weatherstrip piece that joins the second weatherstrip piece is curved,
It is quite troublesome to perform the work of removing the tension of the lip part and the work of applying hair transplantation to the base part and the lip part, and this is a factor that reduces work efficiency.

[Means to solve the problem]

As a means to solve the above-mentioned problems, this invention provides two weathers with different widths that are flocked with hair.
At the joining end of one or both of the IJ tab pieces, a joining lip is formed by extending the lip of that weatherstrip, and the joining lip is brought into contact with the end of the other weatherstrip. The above two weathers are in contact with each other.
Place the strip piece in a mold, and in the mold, attach the joint base part and the joint side part to the part of the joint lip part (two weathers) so that they are continuous with the base part and the side part of the IJ tab piece and are integrated. I tried to form it.

[Effect]

By employing the above-mentioned means, it is possible to omit the deburring work and the flocking work on the joined weatherstrip pieces, thereby reducing the number of work steps.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIG. 1 and FIG. 2.

In addition, in Figures 1 and 2, Figures 3 to 5
Components that are the same as those shown in the figures are given the same reference numerals and detailed explanations thereof will be omitted.

First, the first weatherstrip piece 6 and the second weatherstrip piece 7 are formed by injection molding in a conventional manner. Then, the lip portion 1 of each weather strip piece 6.7 is
After removing the bumps that have formed on the side edges of 5 and 16, hair is implanted on the inner surface of the base portion 9.10 and the outer surface of the lip portion 14.15.

Further, at the joining end of the second weather strip piece 7, the base portion 10 and the side portion 13 are cut to form a joining lip portion 201r in which the lip portion 16 extends a predetermined length. Then, the end of the joining lip 20 is placed in a mold (not shown) in contact with the end of the first weather IJ tab piece 6, and synthetic rubber or the like is injected into the mold to join. The base portion 21 and the joint side portion 22 are attached to the base portions 9 and 10 of the first and second weather strip pieces 6 and 7.
゜13 and integrally formed. Here, there is no need for flocking on the inner surface of the joint base portion 21 because it comes into contact only when the window glass 2 completely closes the window glass 2.

Although the joint base part 21 and the joint side part 22 may be formed of synthetic rubber without causing any problems, the joint lip part 20 is flocked with hair, iJ*hair body 18i.
′! Because it is relatively weak against heat,
It is preferable to use vinyl chloride or the like because the time during which the bristles 18 are exposed to heat is shortened. In the embodiment shown above, the joint lip is attached to the second weatherstrip piece 7.
However, it may be formed on the first weatherstrip piece 6 or both of them, and the method of forming the joining lip is not limited to the above embodiment, and for example, a metal mold having a mold for the joining lip may be formed. It may also be formed using a mold.

〔Effect of the invention〕

According to this invention, a joint lip is formed at the joining end of one or both of the IJ tab pieces (two weather strips having different widths) by extending the lip of the weather strip piece. Then, place the joining lip in contact with the end of another weatherstrip in a mold, and attach the joining base and the joining side to the joining lip in the mold. Since it is formed continuously and integrally with the base and side parts of the IJ tab piece, it is possible to omit the work of deburring and flocking after joining the two weather strip pieces. can.

For this reason, it is possible to reduce the number of work steps. Further, since the especially troublesome work of deburring the curved portions and the work of applying flocking can be omitted, there is an advantage that work efficiency can be improved.

[Brief explanation of the drawing]

1 and 2 both show one embodiment of the present invention; FIG. 1 is a perspective sectional view of a weather strip manufactured using the manufacturing method according to the present invention;
Figure 3 is a side view of the same side, Figure 3 is a schematic configuration diagram showing a car door equipped with an IJ knob, Figure 4 is an enlarged perspective sectional view of the part indicated by the arrow ■ in Figure 3, Figure 5 weathers manufactured using conventional manufacturing methods) I
FIG. 3 is a perspective cross-sectional view of the J-tube. 1... Weatherstrip, 6... First weatherstrip piece, 7... Second weatherstrip piece, 9.10... base, 12
．． 13... Side part, 15.16... Lip part, 18... Hair body, 20... Junction lip part, 21... Junction base part. , 22... Joint side part. Figure 1 Figure 2 Figure 4

Claims (1)

[Claims] A base part that is in the shape of a long plate and has flocked hair on its inner surface, side parts provided on both sides of this base part so as to protrude toward the inner surface of the base part, and edges of this side part. (Two weathers of different widths made of synthetic rubber, etc., each having a tongue-like lip part that protrudes in directions facing each other and has flocked hair on the outer surface.) Either one or both of the IJ knob pieces. A joining lip is formed at the joining end of the weatherstrip by extending the lip of the weatherstrip, and the joining lip is brought into contact with the end of the other weatherstrip to connect the two weatherstrip. is placed indoors, and a joint base portion and a joint side portion are integrally formed at the joint lip portion in the metallic interior so as to be continuous with the base portions and side portions of the two weatherstrip pieces. A method for producing a featured weather strip.