JP2003081025A - Weather strip and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather strip capable of preventing the lowering of a sealing performance and failure by sticking-out of sealer and to provide its manufacturing method. SOLUTION: This weather strip 4 is provided with a U-cross-sectional trim part 5 attached to the whole circumference including, at least, a corner part in the circumferential edge of a door opening for an automobile and molded by an extrusion molding and a hollow seal part 6. The sealer 41 is injected in the bottom wall part of the trim part 5. In the sealer injection process, the injection amount of the sealer 41 is changed according to the thickness of the flange 23 so that the injection amount of the sealer 41 is made relatively small in a range where the thickness of the flange 23 is relatively thick and the injection amount of the sealer 41 is made relatively large in a range where the thickness of the flange 23 is relatively thin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip provided around a door opening of a vehicle and a method for manufacturing the weather strip.

[0002]

2. Description of the Related Art Generally, a weather strip is provided around a door opening of a vehicle such as an automobile. The weather strip includes a trim portion having a substantially U-shaped cross section which is retained by being fitted into a flange on the periphery of the door opening, and a hollow seal portion which is provided so as to project from the trim portion. A metal insert is embedded inside the trim portion. Further, a holding lip portion extending inward is integrally formed on the inner surface of the side wall of the trim portion. When attaching the weather strip, the trim portion is fitted into the flange, and basically the attached state is maintained based on the elastic force of the holding lip portion. Then, when the door is closed, the peripheral portion of the door abuts on the seal portion, and the seal portion is crushed and deformed, thereby sealing between the door and the body.

A sealant called a sealer is often injected into the trim portion (Japanese Patent Laid-Open No. 2-69).
No. 226, Japanese Patent Publication No. 3-11893, etc.).
The presence of such a sealer seals the tip of the flange and prevents rainwater and the like outside the vehicle from entering the inside of the vehicle through the gap between the trim portion and the flange.

[0004]

However, the thickness of the flange on the side to be attached may differ depending on the part. On the other hand, the conventional amount of sealer was always constant at any part. Therefore, when the amount of the sealer is set with reference to the portion having a large thickness of the flange, a gap may be formed in the portion having a small thickness of the flange, and the sealing performance may not be secured. On the contrary, when the amount of the sealer is set with reference to the portion having a small thickness of the flange, there is a possibility that the sealer may protrude from the portion having a large thickness of the flange.

The present invention has been made to solve the above problems, and an object thereof is to prevent the deterioration of the sealing property and to prevent the trouble caused by the protrusion of the sealer, and the production thereof. To provide a method.

[0006]

Means for Solving the Problems and Effects of the Invention Each means suitable for solving the above-mentioned object will be described below item by item. It should be noted that operational effects and the like peculiar to the corresponding means are additionally described as needed.

Means 1. A trim section having a substantially U-shaped cross section that is retained by fitting into a flange of a door opening edge of a vehicle; and a hollow seal section that is provided so as to project from the trim section and that is pressed against the edge of the door when the door is closed, In the weather strip, a sealer is provided in the trim portion, and the amount of the sealer is increased so that the amount of the sealer corresponding to a portion having a smaller thickness is larger than that of the flange having a greater thickness. A weather strip characterized by being changed according to the thickness of the.

According to the means 1, the weather strip is held by the body by fitting the trim portion having a substantially U-shaped cross section into the flange at the peripheral edge of the door opening of the vehicle.
Further, when the door is closed, the periphery of the door is pressed against the hollow seal portion that is provided so as to project from the trim portion, so that the vehicle body and the door are sealed. Further, the sealer provided in the trim section seals between the flange and the trim, so that rainwater and the like outside the vehicle can be prevented from entering the inside of the vehicle through the gap between the trim section and the flange. Now, in this means, the amount of the sealer is changed according to the thickness of the flange. That is, the amount of the sealer corresponding to the thick portion of the flange is relatively small, and therefore, the problem of the sealer protruding due to the excessive amount of the sealer is prevented. Further, the amount of the sealer corresponding to the portion having a small thickness of the flange is relatively large, and therefore, the problem that the sealability cannot be secured due to the insufficient amount of the sealer is prevented.

Means 2. A trim portion having a substantially U-shaped cross section which is retained by being fitted into a flange of a door opening edge of a vehicle, a hollow seal portion which is provided so as to project from the trim portion and which is pressed against the edge of the door when the door is closed, and the trim. A retaining lip portion extending from the inner surface of the portion toward the flange side, and a weather strip provided with a sealer in the trim portion, as compared with a portion having a large thickness of the flange. In order to increase the amount of the sealer corresponding to the portion having a small thickness, the amount of the sealer is changed according to the thickness of the flange,
The length of the holding lip portion is changed according to the thickness of the flange so that the length of the holding lip portion corresponding to a portion having a smaller thickness than the portion having a larger thickness of the flange becomes longer. Weather strip to be.

According to the means 2, the weather strip is held on the body by fitting the trim portion having a substantially U-shaped cross section into the flange at the peripheral edge of the door opening of the vehicle.
Further, when the door is closed, the periphery of the door is pressed against the hollow seal portion that is provided so as to project from the trim portion, so that the vehicle body and the door are sealed. Further, the attachment state is maintained by the holding lip portion that extends from the inner surface of the trim portion toward the flange side. At the same time, the sealer provided in the trim section seals the gap between the flange and the trim to prevent rainwater and the like outside the vehicle from entering the inside of the vehicle through the gap between the trim section and the flange. Now, in this means, the length of the holding lip is
The thickness is changed according to the thickness of the flange, and at a portion where the thickness of the flange is large, the holding lip portion is shortened to suppress an increase in the insertion load of the trim portion. On the contrary, in the region where the thickness of the flange is small, the holding lip portion is lengthened to secure a sufficient elastic force, and the trim portion is prevented from coming off the flange. Moreover, the amount of sealer is changed according to the thickness of the flange. That is, the amount of the sealer corresponding to the thick portion of the flange is relatively small, and therefore, the problem of the sealer protruding due to the excessive amount of the sealer is prevented. Further, the amount of the sealer corresponding to the portion having a small thickness of the flange is relatively large, and therefore, the problem that the sealability cannot be secured due to the insufficient amount of the sealer is prevented.

Means 3. The weather strip according to means 1 or 2, wherein the amount of the sealer is switched to a plurality of predetermined stages according to the thickness of the flange.

According to the means 3, the amount of the sealer is not continuously gradually changed but can be switched to a plurality of predetermined steps according to the thickness of the flange, so that the control when switching the amount becomes complicated. It does not happen and the cost does not increase. Further, even if the thickness of the flange changes a lot, it is unlikely that the desired amount cannot be obtained because the sealer amount cannot be changed in time. Furthermore, since it is not necessary to perform severe control for subtly and continuously changing the sealer amount, it is possible to increase the sealer injection speed and thus improve productivity.

Means 4. 4. The weather strip according to means 3, wherein the predetermined step is set based on the difference between the maximum number and the minimum number of panels that form the flange.

As in the means 4, the predetermined stage is set on the basis of the difference between the maximum number and the minimum number of the panels forming the flange, so that it is easy to adjust the sealer amount according to the thickness. In addition, it is possible to make it difficult for problems such as complicated control and delay of control due to the number of predetermined stages to be increased. In addition, specifically, it is desirable that “the predetermined stage is 5 stages or less”,
It is more desirable that "the number of steps is four or less". Also, "3
It may be "step" or "two steps".

Means 5. The weather strip according to any one of claims 1 to 4, wherein the sealer is injected into at least a bottom wall portion of the trim portion.

Since the sealer is injected into at least the bottom wall portion of the trim portion as in the means 5, the protrusion of the sealer and the like can be suppressed to a minimum, and the arrangement state of the sealer can be stabilized.

Means 6. A trim section having a substantially U-shaped cross section that is retained by fitting into a flange of a door opening edge of a vehicle; and a hollow seal section that is provided so as to project from the trim section and that is pressed against the edge of the door when the door is closed, A method of manufacturing a weather strip, in which a sealer is injected into the trim portion, wherein, when the sealer is injected, the flanges corresponding to the thickness are made to correspond to different flanges along the longitudinal direction of the weather strip. The method for manufacturing a weather strip, wherein the injection amount of the sealer is changed so that the injection amount of the sealer corresponding to a portion having a smaller thickness becomes larger than that of a portion having a large thickness.

According to the means 6, in injecting the sealer, the injection amount of the sealer is made to correspond to the thickness of the different flanges along the longitudinal direction of the weather strip,
The thickness of the flange is changed to be larger than that of the thick portion. That is, the amount of the sealer corresponding to the thick portion of the flange is relatively small, and therefore, the problem of the sealer protruding due to the excessive amount of the sealer is prevented. Further, the amount of the sealer corresponding to the portion having a small thickness of the flange is relatively large, and therefore, the problem that the sealability cannot be secured due to the insufficient amount of the sealer is prevented.

Means 7. A trim section having a substantially U-shaped cross section that is retained by fitting into a flange of a door opening edge of a vehicle; and a hollow seal section that is provided so as to project from the trim section and that is pressed against the edge of the door when the door is closed, A method of manufacturing a weather strip in which a sealer is injected into the trim portion, wherein the thickness of the flange at the peripheral edge of the door opening which varies along the longitudinal direction of the weather strip is made to correspond to the longitudinal direction. A method for manufacturing a weather strip, characterized in that the sealer is divided into a plurality of predetermined stages having a predetermined range, and when the sealer is injected, the injection amount of the sealer is switched according to the division.

According to the means 7, the thickness of the flange at the peripheral edge of the door opening, which varies along the longitudinal direction of the weather strip, is divided into a plurality of predetermined stages having a predetermined range corresponding to the longitudinal direction, and the sealer is provided. At the time of injection, the injection amount of the sealer is switched according to the division. That is, by relatively reducing the amount of the sealer corresponding to a portion of the flange having a large thickness, it is possible to prevent a problem such as the protrusion of the sealer due to the excessive amount of the sealer. Further, since the amount of the sealer corresponding to the portion having a small thickness of the flange is relatively increased, it is possible to prevent a problem that the sealing performance cannot be ensured due to the insufficient amount of the sealer. In particular, since the amount of the sealer is not continuously gradually changed but can be switched to a plurality of predetermined stages according to the thickness of the flange, the control when switching the amount does not become complicated, and the cost is reduced. It does not increase. Further, even when the thickness of the flange is largely changed, it is possible to prevent a situation in which the desired amount cannot be obtained because the sealer amount cannot be changed in time. Moreover,
Since it is not necessary to perform severe control for subtly and continuously changing the sealer amount, it is possible to increase the sealer injection speed and thus improve the productivity.

Means 8. The means 6 or 7 characterized in that the sealer is injected by using a gear pump.
The method for producing a weather strip according to.

According to the means 8, since the sealer is injected by using the gear pump, the sealer can be stably injected even when the sealer having a relatively high viscosity is injected.

Means 9. The weather according to means 8, characterized in that the sealer is introduced into the gear pump after adjusting the introduction amount from the upstream side of the gear pump, and the discharge amount of the sealer is further adjusted by the gear pump. Strip manufacturing method.

According to the means 9, on the upstream side of the gear pump,
Since the introduction amount of the sealer is adjusted to some extent, the accuracy of the injection amount of the sealer can be further improved.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment will be described below with reference to the drawings.

As shown in FIG. 2, a weather strip 4 is provided at the periphery of the body side door opening 3 corresponding to the side door 2 of the automobile 1. The weather strip 4 of the present embodiment is attached to the entire periphery of the door opening 3 excluding the lower portion, and is molded by an extrusion molding method.

As shown in FIGS. 1 and 3, the weather strip 4 has a trim portion 5 and a seal portion 6. The trim portion 5 is provided with a vehicle interior side wall 11, a vehicle exterior side wall 12, and a connecting portion 13 having a curved cross-section that connects the side walls 11 and 12, and is generally U-shaped. The trim portion 5 is made of EPDM (ethylene-propylene-diene copolymerization) solid rubber, and a metal insert 14 is embedded therein.

A plurality of holding lip portions 15 extending toward the inside of the trim portion 5 (inside the vehicle in the vehicle width direction) are integrally formed on the inner surface of the outer side wall 12 of the vehicle. The holding lip portion 15 has a constant size (length) at any part.
have. Further, on the inner surface of the vehicle interior side wall 11, a variable holding lip portion 16 extending integrally toward the inside of the trim portion 5 (vehicle exterior in the vehicle width direction) is integrally formed. A cover lip 17 is integrally formed on the outside of the connecting portion 13 for covering an end of an interior product such as a garnish (not shown).

Further, the seal portion 6 is the outer side wall 12 of the vehicle.
On the other hand, it is provided so as to project to the outside of the vehicle and has a hollow shape. The seal portion 6 is made of EPDM sponge rubber. Then, when the door 2 is closed, the peripheral portion of the door 2 is pressed and the seal portion 6 is crushed and deformed, thereby sealing between the door 2 and the body of the automobile 1.

A sealer 41 is injected into the bottom wall portion of the trim portion 5 (inner side surface of the connecting portion 13). As the sealer 41 in the present embodiment, a butyl rubber-based non-drying type is adopted. Due to the presence of the sealer 41, the tip end of the flange 23, which will be described later, is sealed, thereby preventing rainwater and the like outside the vehicle from entering the inside of the vehicle through the gap between the trim portion 5 and the flange 23. It has been designed.

The weather strip 4 is attached by fitting the trim portion 5 into the peripheral edge of the door opening 3 on the body side. More specifically, the body includes an inner panel 21 and an outer panel 22, and basically the flanges 23 are formed by joining the peripheral portions of both panels 21 and 22. However, in the present embodiment, the thickness of the flange 23 is different depending on each part. For example, as shown in FIG. 3A, there is a portion where the flange 23 is formed by joining only the inner panel 21 and the outer panel 22 to each other.
As shown in (c), there is also a portion where the flange 23 is formed by providing plate-like lean forces 24 and 25 between the panels 21 and 22 in order to enhance the strength. In addition, there is a part where only one lean force 24 is installed, and there is a part where two lean forces 24 and 25 are installed.

On the other hand, in the present embodiment, basically, the length of the variable holding lip portion 16 and the amount of the sealer 41 are different in the longitudinal direction of the weather strip 4 depending on the thickness of the flange 23. It is supposed to do. Moreover,
The length of the variable holding lip portion 16 and the amount of the sealer 41 in this embodiment are mainly switched in three stages.

FIG. 4 is a diagram schematically showing the die 31 and the like used in the extrusion molding of the weather strip 4 described above. The die 31 has a molding hole 32 for molding the weather strip 4, and the molding hole 3
An unvulcanized rubber material is extruded from No. 2. Further, the portion corresponding to the trim portion 5 has a substantially flat shape so as to be extruded in an initially opened state (curved later), and the insert 14 is continuously provided along with the unvulcanized rubber in the portion. It is being supplied.

A shutter 33 and an actuator 34 are provided as a mechanism for switching the length of the variable holding lip portion 16. Guide rails 35 are provided on both sides of the shutter 33, and the shutter 33 is slidable along the guide rails 35. By this slide, the opening length of the portion of the molding hole 32 corresponding to the variable holding lip portion 16 can be switched. However, the shutter 33 is the variable holding lip portion 1.
All of the tips of 6 have such a structure that they have a constant shape, and can be slid as such. Further, the actuator 34 is for sliding the shutter 33, and a known one such as a cylinder, a cam mechanism, or a motor can be appropriately adopted. Further, the actuator 34 is drive-controlled by the control device 51.

Further, FIG. 5 is a diagram schematically showing a sealer injecting device 61 for injecting the sealer 41 into the trim portion 5 of the extrusion molded body 4A obtained by extrusion molding. As shown in the figure, the sealer injection device 61 includes a nozzle device 6
2, the pressure feed pump 63 and the gear pump 64 are provided, and the extrusion molded body 4A is configured to be transported by the feed roller 70 along the longitudinal direction immediately below the nozzle device 62. The nozzle device 62 includes a support plate 65 that is vertically movable by a cylinder (not shown), and a nozzle body 66 that extends below the support plate 65.
And a switching valve 67 provided above the support plate 65.

Further, between the pressure feed pump 63 and the gear pump 64, and between the gear pump 64 and the switching valve 67.
The spaces are connected by sealer supply hoses 68 and 69, respectively. Then, the sealer 41 is pressure-fed from the pressure pump 63 after the introduction amount is adjusted with respect to the gear pump 64, and the sealer 41 whose supply amount is further adjusted is switched from the gear pump 64 by the switching. It is designed to be sent to the valve 67. Also,
The feed roller 63, the pressure feed pump 63, the gear pump 64
The drive of the switching valve 67 is controlled by the control device 52.

Next, the main extrusion molding step and the sealer injection step in the method of manufacturing the weather strip 4 configured as described above will be described.

The control devices 51 and 52 have data relating to the thickness of the flange 23 which varies along the longitudinal direction of the weather strip 4 (extruded body 4A) (FIG. 6).
(See (a) and (b)), that is, the corresponding flange 23 between one end surface α and the other end surface β.
Information about the thickness of the
1 controls the actuator 34 based on the data, and the control device 52 controls the feed roller 70, the pressure feed pump 63, the gear pump 64, and the switching valve 67 based on the data.

The extrusion molding process will be described in more detail. As shown in FIGS. 6 (b) and 6 (c), when the thickness of the flange 23 is in the relatively large range of c to d,
The actuator 34 is classified as belonging to "thickness", the target length of the variable holding lip portion 16 is set to be short, and the actuator 34 is controlled so that the shutter 33 is located at the upper side in FIG. As a result, the actual length of the variable holding lip portion 16 becomes short in the section where the thickness of the flange 23 is relatively large.

The flange 23 has a medium thickness b to b.
When it is within the range of c, it is classified as belonging to “medium thickness”, the target length is set to medium, and the shutter 33
The actuator 34 is controlled so that is positioned in the middle of FIG. As a result, in the section where the thickness of the flange 23 is medium, the actual length of the variable holding lip portion 16 becomes medium. Further, when the thickness of the flange 23 is in the range of a to b, which is relatively small, it is classified as belonging to "small thickness", the target length is made long, and the shutter 33 is located at the lower part of FIG. Actuator 34 is controlled so that. As a result, the actual length of the variable holding lip portion 16 becomes long in the section where the thickness of the flange 23 is relatively small. In the longitudinal direction of the weather strip 4, there is a portion where the length of the variable holding lip portion 16 can be switched according to the switching of the target length, but the length of the variable holding lip portion 16 is not gradually switched. It is done relatively quickly (in a short period of time).

The extruded product 4 obtained as described above
A is subjected to a sealer injection step after the trim portion 5 is bent and formed into a predetermined shape. The sealer injecting step will be described in more detail. As shown in FIGS. 6B and 6D, when the thickness of the flange 23 is in the range of c to d, which is relatively large, it is regarded as belonging to “thickness”. The target discharge amount of the sealer 41 is divided into small parts, and the rotation number of the gear pump 64 and the like per unit time is controlled to be small. As a result, the actual injection amount of the sealer 41 becomes relatively small in the section where the thickness of the flange 23 is relatively large.

The flange 23 has a medium thickness b to b.
When it is within the range of c, it is classified as belonging to "medium thickness", the target discharge amount is set to medium, and the rotation speed of the gear pump 64 and the like per unit time is controlled to be medium. As a result, in the section where the thickness of the flange 23 is medium, the actual injection amount of the sealer 41 is medium. Further, when the thickness of the flange 23 is in the range of a to b, which is relatively small, the flange 23 is classified as belonging to "small thickness", the target discharge amount is considered to be large, and the number of rotations per unit time of the gear pump 64 and the like. Is controlled to be large. As a result, in the section where the thickness of the flange 23 is relatively small, the actual injection amount of the sealer 41 is large.

As described above in detail, according to the present embodiment, when the flange 23 has a large thickness in the range of c to d, it is classified as belonging to "thickness" and the amount of the sealer 41 is increased. There are many. Therefore, it is possible to prevent a problem that the sealability is deteriorated due to the lack of the sealer 41. Further, when the thickness of the flange 23 is within the range of a to b, which is small, the flange 23 is classified as belonging to "small thickness", and the amount of the sealer 41 is small. Therefore, it is possible to prevent the problem such as the protrusion of the sealer due to the excessive amount of the sealer 41.

Further, since the amount of the sealer 41 is not continuously gradually changed but can be switched in three stages according to the thickness of the flange 23, the control when switching the amount may be complicated. Also, the cost does not increase. Further, even when the thickness of the flange 23 is largely changed, it is possible to prevent the situation in which the desired amount cannot be obtained because the amount of the sealer 41 cannot be changed in time. Furthermore, since it is not necessary to perform severe control for subtly and continuously changing the amount of the sealer 41, it is possible to increase the speed of injecting the sealer 41 and thus improve productivity.

Further, in the present embodiment, the flange 23
The length of the variable holding lip portion 16 can be switched according to the thickness of the. For this reason, it becomes difficult for the situation where the load of inserting the trim portion 5 into the flange 23 to increase in a portion where the thickness of the flange 23 is large, and it is possible to prevent deterioration of mounting workability. In addition, in the portion where the thickness of the flange 23 is small, the trim portion 5 does not easily come off from the flange 23, and the mounting state can be stabilized.

It should be noted that the present invention is not limited to the contents described in the above embodiment, but may be carried out as follows, for example. Of course, other application examples and modification examples not illustrated below are naturally possible.

(A) In the above embodiment, the case of injecting the sealer 41 into the trim portion 5 of the elongated extrusion-molded body 4A has been embodied, but it is also applicable to an annular weather strip. That is, FIG. 7 is a schematic diagram showing a sealer injection device 91 for an annular main body portion (precursor of weather strip) 81 whose ends are connected and molded by a mold through extrusion molding. As shown in the figure, also in the injection device 91, the nozzle device 92, the pressure pump 93, the gear pump 94 and the like are provided as in the above-described embodiment. Further, in this embodiment, the support rollers 95, 96, 97, 98 are rotatably supported at at least four places.
A ring-shaped main body portion 81 is hooked on the surfaces 98 to 98. The pair of upper rollers 97, 98 can be moved up and down by a cylinder (not shown) or the like, whereby the tension of the suspended main body 81 is adjusted appropriately. Further, the feed roller conveyor 99 is provided on the upstream side and the downstream side (both left and right sides in the figure) of the nozzle device 92.
A and 99B are provided, and by driving these feed roller conveyors 99A and 99B, the suspended main body 81 can be rotated and moved in a predetermined direction. By using such an injecting device 91, even when an annular weather strip is manufactured, the same operational effects as those of the above-described embodiment can be obtained.

(B) In the above embodiment, not only the amount of the sealer 41 but also the length of the variable holding lip 16 is variable according to the thickness of the flange 23. However, the length of the holding lip 16 is variable. Does not have to be provided, and the length may always be constant.

(C) In the above embodiment, the flange 23
Although the injection amount of the sealer 41 is switched to three stages according to the thickness of the, it is not always necessary to have three stages.
The number of stages may be four or more. See also sheila 4
Instead of switching the amount of 1 stepwise, the amount may be gradually changed continuously.

(D) In the above embodiment, the method for manufacturing the weather strip 4 provided on the periphery of the body side door opening 3 corresponding to the (side front) door 2 is embodied. The present invention can also be applied to a weather strip provided on the opening periphery of another door such as a door (trunk lid) or a roof door (sliding roof panel).

(E) In the above embodiment, the trim portion 5 is made of solid rubber and the seal portion 6 is made of sponge rubber, but they may be made of the same material. Moreover, although EPDM is exemplified as a material forming the weather strip 4,
Other rubber materials such as IR (isoprene rubber) and CR (chloroprene rubber) may be used. Further, it may be made of olefinic thermoplastic elastomer (TPO) or other elastic material having rubber-like elasticity such as soft polyvinyl chloride.

(F) It is also applicable to a weather strip in which the insert 14 is omitted.

(G) In the above embodiment, a butyl rubber non-drying sealer is used as the sealer 41. However, a sealer made of another material may be used, or a dry type sealer may be used. Good.

(H) In the above-mentioned embodiment, the butyl rubber type non-drying sealer is injected as the sealer 41 in a separate step. However, a sponge material having a high expansion ratio is used as the sealer and the trim part is extruded. Occasionally, coextrusion and variable extrusion techniques may be used to vary the extrusion rate of the sealer.

(I) When a sponge material having a high expansion ratio is used as the sealer, the extrusion rate is kept constant and an infrared heater, hot air,
By providing a skin layer forming means such as electron beam irradiation and intermittently changing the amount of the skin layer formed, the amount of foaming thereafter is changed, and a sponge material corresponding to the change in the thickness of the flange in the longitudinal direction of the weather strip is formed. You may make it adjust by the protrusion amount from a trim part bottom wall.

(J) The sealer 41 may be provided between the holding lip portions 15 as well as the bottom wall portion of the trim portion 5.

[Brief description of drawings]

1A, 1B, and 1C are cross-sectional views showing a weather strip according to an embodiment.

FIG. 2 is a perspective view showing an automobile.

3 (a), (b), and (c) are cross-sectional views showing attachment structures of weather strips that differ in parts.

FIG. 4 is a view schematically showing a die and the like used in extrusion molding of a weather strip.

FIG. 5 is a schematic perspective view showing a configuration of a sealer injection device and the like.

FIG. 6A is a schematic side view showing a weather strip, FIG. 6B is data showing a relationship between flange thicknesses corresponding to the longitudinal direction of the weather strip, and FIG.
Is a chart showing the relationship of the lengths of the variable holding lip portions corresponding to the longitudinal direction, and (d) is a chart showing the relationship of the discharge amount of the sealer corresponding to the longitudinal direction.

FIG. 7 is a schematic front view showing the configuration of a sealer injection device and the like in another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Car as a vehicle, 2 ... Door, 3 ... Door opening, 4
... Weather strip, 4A ... Extruded product, 5 ... Trim part, 6 ... Seal part, 16 ... Variable holding lip part, 23 ... Flange, 41 ... Sealer, 52 ... Control device, 61, 91 ...
Injection device, 62, 92 ... Nozzle device, 63, 93 ... Pressure pump, 64, 94 ... Gear pump.

Claims (8)

[Claims] 1. A trim portion having a substantially U-shaped cross section which is retained by being fitted into a flange of a vehicle door opening edge, and a hollow seal which is provided so as to project from the trim portion and is pressed against the door edge when the door is closed. And a sealer provided in the trim portion, wherein the sealer has a larger amount corresponding to a portion having a smaller thickness than a portion having a larger thickness of the flange. Is changed according to the thickness of the flange. 2. A trim portion having a substantially U-shaped cross section which is retained by being fitted into a flange of a door opening edge of a vehicle, and a hollow seal which is provided so as to project from the trim portion and which is pressed against the edge of the door when the door is closed. And a holding lip portion extending from the inner surface of the trim portion toward the flange side, wherein the trim portion is a weather strip provided with a sealer, wherein the thickness of the flange is The amount of the sealer is changed according to the thickness of the flange so that the amount of the sealer corresponding to the portion having a smaller thickness than the portion having a larger thickness is larger than that of the portion having a large thickness of the flange. The length of the holding lip portion is changed according to the thickness of the flange so that the length of the holding lip portion corresponding to a small portion becomes long. Weather strip to be. 3. The weather strip according to claim 1, wherein the amount of the sealer is switched to a plurality of predetermined stages according to the thickness of the flange. 4. The weather strip according to claim 3, wherein the predetermined step is set based on a difference between the maximum number and the minimum number of panels forming the flange. 5. The sealer is injected into at least a bottom wall portion of the trim portion.
5. The weather strip according to any one of 4 to 4. 6. A trim portion having a substantially U-shaped cross section which is retained by being fitted into a flange of a door opening edge of a vehicle, and a hollow seal which is provided so as to project from the trim portion and is pressed against the edge of the door when the door is closed. A method of manufacturing a weather strip, wherein a sealer is injected into the trim portion, wherein the sealer is injected at different thicknesses along the longitudinal direction of the weather strip when the sealer is injected. Then, the injection amount of the sealer is changed so that the injection amount of the sealer corresponding to a portion having a smaller thickness than the portion having a large thickness of the flange is increased. . 7. A trim section having a substantially U-shaped cross section which is retained by being fitted into a flange of a door opening edge of a vehicle, and a hollow seal which is provided so as to project from the trim section and which is pressed against the edge of the door when the door is closed. A method of manufacturing a weather strip, wherein a sealer is injected into the trim portion, wherein the thickness of the flange around the door opening that varies along the longitudinal direction of the weather strip is According to the direction, divided into a plurality of predetermined stages with a predetermined range,
The method of manufacturing a weather strip, wherein the injection amount of the sealer is switched according to the division when the sealer is injected. 8. The method for manufacturing a weather strip according to claim 6, wherein the sealer is injected by using a gear pump.