JP2001163061A - Weather strip for fixed window and its forming die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather strip for a fixed window capable of preventing the intrusion of water, noise, dust, or the like from the outside to the inside of a car. SOLUTION: A seal bead 18c is formed inside of a car with respect to a center line O directing in the longitudinal direction with respect to a bottom face 18b of an engagement groove 18a of a weather strip 18 to seal a lower end face of the glass 19. A drain opening 18e is formed at an outer side of the car with respect to the center line O, of the bottom face 18b for discharging the water or the like intruded into the engagement groove 18a from the outside of the car into a recessed groove 21 formed on a lower part of a door sash 14, and further discharging the same to the outside of the car. As the drain opening 18e is displaced to the outside of the car with respect to the seal bead 18c, the intrusion of the rainwater or the like into the car can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for a fixed window, and more particularly, to an outer peripheral edge of a fixed window attached to a portion defined by a partition sash of a window opening formed by a door body and a door sash. The present invention relates to a weatherstrip for a fixed window mounted on a vehicle and a molding die thereof.

[0002]

2. Description of the Related Art Generally, a weather strip for a fixed window is
A fixed type annular sash mounted on a door or a vehicle body is accommodated and held in a concave groove of the sash, and has an annular engaging groove for engaging the entire periphery of the fixed window panel, and is injection molded by an injection mold. ing.

A conventional weather strip for a fixed window is shown in FIG.
As shown in the bottom side cross-sectional view of FIG. 0, the weather strip 42 is housed in the concave groove 41a of the door sash 41.
Is provided with an engagement groove 42a for fitting the outer peripheral edge of the glass 43. A seal bead 42c is formed on the bottom surface 42b of the engagement groove 42a to locally contact the lower end surface of the glass 43 to enhance the sealing property. Further, a seal lip 42 d for sealing the bottom surface of the door sash 41 is formed on the outer surface of the lower end of the weather strip 42. As shown in FIG. 11, water that prevents rainwater, sound, or dust that has entered from the gap between the glass 43 and the inside surface of the outside of the engagement groove 42a from entering the inside of the vehicle is provided on the bottom surface 42b of the weather strip 42. A hole 42e is formed.

[0004]

However, in the conventional weather strip 42, as shown in the plan view of FIG. 12 showing the bottom surface 42b of the engagement groove 42a, the seal bead 4
2c and the drain hole 42e are provided on the center line O extending in the longitudinal direction of the bottom surface 42b, so that the seal beads 42c
Are not formed by the drain holes 42e. For this reason, there has been a problem that water, sound, dust, and the like enter the inside of the vehicle without being discharged to the outside through the drain hole 42e.

[0005] In the injection molding die of the weather strip 42, a drain hole 42e is formed when a forming groove for forming the seal bead 42c is formed in a middle die for forming the engaging groove 42a. Since the forming pin exists on the center line O, there is a problem that the processing operation is troublesome.

Furthermore, since the processing of the drainage hole forming pin is carried out by shaving from the material forming the middle die, the shaving area of the shaping pin is increased and the working work is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a weather strip for a fixed window which solves the above-mentioned problems of the prior art and can prevent water, sound or dust from entering the vehicle from the outside. Is to do.

Another object of the present invention is to provide a mold for a weather strip for a fixed window, which can easily form a seal bead forming groove. Still another object of the present invention is to provide a mold for a weatherstrip for a fixed window, which can easily process a water drainage forming pin and can improve the durability of a medium die.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention is performed by accommodating and holding in a concave annular groove of a fixed annular sash mounted on a door or a vehicle body. A fixed window panel is provided with an annular engagement groove for engaging the entire periphery of the fixed window panel, and is integrally formed on a bottom surface of the engagement groove located on a lower side in a fixed window weatherstrip molded by a molding die; And a seal bead that contacts the lower end surface of the fixed window panel to perform sealing by displacing the seal bead to the inside of the vehicle from a center line oriented in the longitudinal direction of the bottom surface and to make the water drainage hole larger than the center line. The gist is that it is displaced outward and penetrates downward.

As a molding method, injection molding, transfer molding, injection molding, compression molding and the like can be used, but molding by injection molding is preferable. The gist of the invention described in claim 2 is that, in claim 1, the outer side surface of the drain hole is formed flat, and the flat side surface is flush with the outer flat side surface of the engagement groove. I do.

According to a third aspect of the present invention, in the second aspect, the drain hole is formed in a rectangular cylinder shape, and a flat side surface on a long side thereof is located outside the vehicle. .
According to a fourth aspect of the present invention, there is provided an injection molding die of the weather strip for a fixed window according to the first aspect, comprising: an upper die and a lower die;
A molding die interposed therebetween to form the engaging groove, a molding pin for forming a drain hole is integrally formed on the outer peripheral surface of the middle die, and a molding groove for forming a seal bead of a weather strip. Is formed on the entire circumference of the middle die, and the forming pin and the forming groove are formed so as to be displaced to the outside and the inside of the vehicle with respect to a center line oriented in the longitudinal direction of the bottom surface of the engagement groove. .

According to a fifth aspect of the present invention, in the fourth aspect, the flat-shaped outer surface of the molding pin provided on the middle die is formed with the flat-shaped flat surface on the outer side of the engaging groove. The point is that they are formed in one.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a weather strip according to the present invention will be described below with reference to FIGS.

FIG. 5 shows a rear door 1 located on the left side of the vehicle.
1 is a front view of the rear door 11 viewed from the outside. A window opening 13 is formed by a door sash 14 at an upper portion of a door body 12 of the rear door 11. The window opening 13 is partitioned by a partition sash 15 into an opening / closing window 13a and a fixed window 13b. A door glass run 16 is mounted on the opening / closing window 13a side, and a glass 17 can be moved up and down. A weather strip 18 is engaged with the fixed window 13b. Glass 19 as a fixed window panel is fitted in the inside.

The structure of the weather strip 18 will now be described with reference to FIGS. As shown in FIG.
An engaging groove 18a for engaging the outer peripheral edge of the rim is formed over the entire circumference. As shown in FIGS. 1 and 2 showing an enlarged cross section of a portion corresponding to line 1-1 and line 2-2 in FIG.
A seal bead 18c is provided on the bottom surface 18b of the engagement groove 18a.
Are integrally formed upward and pressed against the lower end surface of the glass 19 to perform sealing. A seal lip 18d is integrally formed on the outer peripheral surface of the lower end of the weather strip 18, and the concave groove 2 formed in the door sash 14 is formed.
1 is pressed against the bottom surface 21a to perform sealing.

As shown in FIG. 1 and FIG.
A door trim 22 and a seal member 23 on the outside of the vehicle are mounted on the outer side of 4, and the seal member 23 is pressed against the outer surface of the glass 19.

A seal lip 18f is provided on a side surface of the weather strip 18 on the inner side of the vehicle, and a swelling portion 18 is formed below the weather strip 18 as shown in FIGS.
g is formed, and a sealing lip 18h
Are integrally formed. The seal lip 18h is in contact with a seal member 25 mounted on a door trim 24 inside the vehicle.

As shown in FIG. 2, a bulging portion 18i is integrally formed on the lower outer surface of the weather strip 18,
The weather strip 18 is stably held at the engagement position by contacting the inner wall surface of the concave groove 21.

As shown in FIG. 3 showing an enlarged cross section of a portion corresponding to the line 3-3 in FIG. 6, the weather strip 18 located on the front side in the traveling direction of the vehicle body is provided with the drain holes 18e.
The swelling portion 18g is omitted, and a seal lip 18j that contacts the partition sash 15 is formed.

As shown in FIG. 4 showing an enlarged cross section of a portion corresponding to the line 4-4 in FIG. 6, the weather strip 18 located on the rear side in the traveling direction of the vehicle body has a drain hole 18e and a bulging portion 18g. Omitted.

As shown in FIG. 7 showing an enlarged cross section of a portion corresponding to line 5-5 in FIG. 6, the seal bead 18c is
The bottom surface 18b is displaced inward from the center line O directed in the longitudinal direction of the bottom surface 18b and is continuous. The drain hole 18e is displaced outward from the center line O and formed to penetrate downward. The side surface on the vehicle outside of the drain hole 18e is formed flat, and the flat side surface S1 is formed flush with the flat side surface S2 on the vehicle outside of the engagement groove 18a.

Next, a method of molding the weather strip 18 having the above-described structure will be described with reference to FIGS. As shown in FIG. 8, an injection mold 30 used for injection molding is formed by an upper mold 31 and a lower mold 32, and a middle mold 33 interposed between the upper mold 31 and the lower mold 32.

As shown in FIG. 9, a seal bead forming groove 34 for forming the seal bead 18c of the weather strip 18 is formed on the outer peripheral surface of the middle die 33, and a drain hole forming pin 35 for forming the drain hole 18e is provided. It is formed in three places. The drainage hole forming pin 35 is cut out when the middle mold 33 is manufactured. And the drain hole 18e
The flat side surface 35a of the forming pin 35 that forms the flat side surface S1 on the outside of the vehicle is formed flush with the flat surface 33a of the middle die 33 that forms the flat side surface S2 on the outside of the engagement groove 18a.

A molding groove for molding the seal lip 18d is formed on the mating surface of the upper mold 31 and the lower mold 32. As shown in FIG.
With the combination of the above, EPDM sponge rubber or solid rubber is press-fitted into the cavity 36 formed by the upper mold 31 to the middle mold 33 in a heated and molten state, and the weather strip 18 is formed.

Next, the effects of the weather strip 18 and the injection mold 30 configured as described above will be listed together with the configuration. (1) In the above embodiment, as shown in FIG. 7, the seal bead 18c is displaced inward from the center line O oriented in the longitudinal direction of the bottom surface 18b, and the drain hole 18e is moved to the center line O
The seal bead 18c from the bottom 18
b was formed continuously over the entire length in the longitudinal direction. For this reason, in FIG. 1, rainwater or dust that has entered through a gap between the glass 19 and the seal member 23 enters between the flat side surface S2 of the engagement groove 18 a of the weather strip 18 on the vehicle outside and the surface of the glass 19. The water is also discharged from the drain hole 18e to the concave groove 21 side, and is discharged from the bottom of the concave groove 21 to the outside through a discharge passage (not shown). The continuous seal beads 18c can prevent rainwater, dust, or sound from entering the inside of the vehicle.

(2) In the above embodiment, the flat side surface S1 on the outside of the vehicle of the drain hole 18e and the flat side surface S2 of the outside of the engagement groove 18a are formed flush with each other. And the like are straightly discharged along the flat side surface S2 and the flat side surface S1, and can be prevented from remaining at the inner bottom portion of the engagement groove 18a.

(3) In the above embodiment, as shown in FIG. 9, the seal bead forming groove 34 and the drainage forming pin 35 of the middle die 33 are separated from each other by displacing the center line O as a boundary. Therefore, the processing of the seal bead forming groove 34 is performed by using the drain hole forming pin 3.
5 can be easily performed continuously without interference.

(4) In the above embodiment, the injection mold 30
The flat side surface 35a of the drainage hole forming pin 35 of the middle mold 33 is
It was formed flush with the flat Heisei-shaped surface 33a of the engaging groove 18a of the middle die 33. For this reason, the area for shaving and forming the drainage hole forming pin 35 is reduced, and the work can be easily performed.

When the weather strip 18 is molded using the injection molding die 30, a large injection pressure acts in the cavity 36, and a bending moment acts on the drain hole forming pin 35. However, since the flat side surface 35a of the drainage hole forming pin 35 is not machined, a predetermined rigidity can be secured. Therefore, there is no possibility that the drainage hole forming pin 35 is deformed, and the durability of the middle mold 33 can be improved.

(5) In the above embodiment, as shown in FIGS. 1 and 2, the bottom surface 21a of the concave groove 21 of the door sash 14 is inclined downward toward the outside of the vehicle.
Rainwater and the like discharged to the outside can be smoothly guided to the outside without remaining, and can be reliably discharged.

The above embodiment can be embodied with the following modifications.・ Water drain hole 1 (not shown)
The position 8e may be formed at a position slightly separated from the flat side surface S2 on the vehicle outside of the engagement groove 18a toward the center line O. In this alternative example, since the entire outer peripheral surface of the drainage hole forming pin 35 is cut out, there is no advantage in processing the drainage hole forming pin 35. However, since the seal bead forming groove 34 and the drainage hole forming pin 35 are separated from each other with the center line O as a boundary, the processing of the seal bead forming groove 34 becomes easier as compared with the conventional configuration.

The number of the drain holes 18e may be one, two, four or more. -The shape of the forming pin 35 of the drain hole 18e may be formed in a rectangular column shape. In this case, it is not necessary to perform the semi-columnar chamfering as in the above embodiment, so that the processing is further facilitated.

The molding method is not limited to injection molding, and any molding method such as transfer molding, injection molding, and compression molding can be used.

[0034]

As described in detail above, the invention of the weather strips according to the first to third aspects of the present invention is characterized in that water, sound, dust or the like that has entered between the engaging groove and the fixed window panel from the outside of the vehicle is not affected by the vehicle. It can be prevented from entering the inside.

According to the second aspect of the present invention, it is possible to prevent water and dust from remaining at the bottom of the engagement groove. According to the invention of the third aspect, the passage area required for the drain hole can be secured by a small number of drain holes.

According to the fourth or fifth aspect of the present invention, the seal bead forming groove can be easily processed. According to the fifth aspect of the present invention, the drainage hole forming pin provided in the middle mold can be easily processed and its durability can be improved.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along the line 1-1 of FIG. 6, showing an embodiment of a weather strip according to the present invention;

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 6;

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 6;

FIG. 5 is a front view showing the entire rear door.

FIG. 6 is a schematic front view of the weather strip.

FIG. 7 is an enlarged sectional view taken along line 5-5 of FIG. 6;

FIG. 8 is a cross-sectional view of an injection mold.

FIG. 9 is a perspective view of a medium-sized model.

FIG. 10 is a cross-sectional view of a bottom portion showing a conventional weatherstrip.

FIG. 11 is a cross-sectional view of a bottom portion showing a conventional weatherstrip.

FIG. 12 is a plan sectional view showing the relationship between a seal bead and a drain hole of a conventional weather strip.

[Explanation of symbols]

Reference numeral 18: weather strip, 18a: engagement groove, 18b: bottom surface, 18c: seal bead, 18e: drain hole, 19: glass as a fixed window panel, 21: concave groove, 30: injection molding die, 31: upper die, 32 ... lower mold, 33 ... middle mold, 34 ...
Seal bead forming groove, 34a: flat side surface, 35: drainage hole forming pin, 35a: flat side surface, S1: flat side surface, S2 ...
Flat side.

Claims (5)

[Claims] 1. A molding die which is accommodated and held in a concave annular groove of a fixed annular sash mounted on a door or a vehicle body, and has an annular engaging groove for engaging the entire periphery of a fixed window panel. A sealing bead formed integrally with the bottom surface of the engagement groove located on the lower side and being in contact with a lower end surface of the fixed window panel to perform sealing. A weather strip for a fixed window, which is displaced inward from the center line oriented in the longitudinal direction of the vehicle and made continuous, and the drain hole is displaced outward from the center line and penetrates downward. 2. The weather strip for a fixed window according to claim 1, wherein a side surface on the vehicle outside of the drain hole is formed flat, and the flat side surface is flush with a flat side surface on the vehicle outside of the engagement groove. 3. The weather strip for a fixed window according to claim 2, wherein the drain hole is formed in a long rectangular tube shape, and a flat side surface on a long side of the drain hole is located outside the vehicle. 4. The molding die for a weatherstrip for a fixed window according to claim 1, comprising: an upper die and a lower die; and a middle die interposed therebetween to form the engaging groove. A forming pin for forming a drain hole is integrally formed on an outer peripheral surface, and a forming groove for forming a seal bead of a weather strip is formed on the entire periphery of the middle mold. The forming pin and the forming groove are formed on the bottom surface of the engaging groove. The mold is formed so as to be displaced toward the outside and inside of the vehicle with respect to a center line oriented in the longitudinal direction of the vehicle. 5. The molding according to claim 4, wherein the flattened surface on the outside of the vehicle of the molding pin provided on the middle die is flush with the flattened surface on the outside of the engagement groove. Type.