JP4487200B2 - Glass run for automobile and manufacturing method thereof - Google Patents

Description

  The present invention relates to a glass run which is attached to the inner periphery of a door frame of an automobile door having a straight portion and a corner portion, and relates to a method for manufacturing the same.

  As shown in FIG. 11, a glass run 110 for guiding the raising and lowering of the door glass 5 is attached to the inner periphery of the door frame 2 of the automobile door 1. The conventional mounting structure is shown in FIG. FIG. 13 is a cross-sectional view of a notch portion and a molding portion of the straight portion 111 of the glass run 110 in the corner portion 112. FIG. 14 is a perspective view showing another state in which the straight portion 111 is cut out before the glass run 110 is connected.

Conventionally, as shown in FIGS. 11 and 12, the glass run 110 is mounted in the channel 3 of the door frame 2 to guide the raising and lowering of the door glass 5 and to seal between the door glass 5 and the door frame 2. is doing. Further, the glass run 110 has a shape of the door frame 2 in which the upper side portion, the front side vertical side portion, and the rear side vertical side portion of the door 1 including the straight linear portion 111 formed by extrusion as shown in FIG. Are connected at a corner 112 which is formed in accordance with the shape.
The seal between the door 1 and the vehicle body is made by a door weather strip 108 attached to the outer periphery of the door frame 2 and / or an opening trim weather strip 109 attached to the flange of the opening of the vehicle body. .

As shown in FIG. 12, the glass run 110 has a substantially U-shaped cross section including a vehicle outer side wall 120, a vehicle inner side wall 130, and a bottom wall 140. A vehicle exterior seal lip 121 is provided so as to extend from the vicinity of the front end of the vehicle exterior side wall 120 toward the inside of the substantially U-shaped cross section. Further, a vehicle inner side seal lip 131 is also provided on the vehicle inner side wall 130 so as to extend from the vicinity of the front end thereof toward the inside having a substantially U-shaped cross section.
The vehicle outer side wall 120, the vehicle inner side wall 130 and the bottom wall 140 are inserted into the channel 3 provided in the door frame 2, and a part of the outer surface of each wall is brought into contact with the inner surface of the channel 3. keeping.

The door glass 5 slides on the inside of the glass run 110 having a substantially U-shaped cross section, and the both sides of the end portion of the door glass 5 are sealed and held by the vehicle exterior seal lip 121 and the vehicle interior seal lip 131. (For example, refer to Patent Document 1).
As described above, the glass run 110 is formed by molding at the corner portion 112 and connects the straight portion 111 at the time of molding (for example, refer to Patent Documents 2 and 3).
In the connection, as shown in FIG. 14, in order to improve the connection strength, the connection end surface 111a of the linear portion 111 is cut out in a stepped shape (see, for example, Patent Document 4). ).
In this case, in order to improve the appearance by making the connection surface inconspicuous, the outside of the straight line portion 111 is lengthened and extended to near the corner of the corner portion 112, and the inside of the vehicle is cut long. .

When the straight portion 111 is notched, from the ease of notching with a cutting machine and the smoothness of the cut surface, as shown in FIG. 13, the vicinity of the center of the bottom wall 140, which is the substantially central portion of the glass run 110, is used. The inside of the car was cut away.
However, in this case, the remaining portion of the straight portion 111 is a part of the vehicle outer side wall 120 and the bottom wall 140, which is close to a plate shape, is easy to bend, increases flexibility, and becomes an end portion of the glass run 110. It was difficult to maintain the shape of

When the corner portion 112 is formed, the end of the straight portion 111 is attached to or inserted into a corner portion molding die, which will be described later, but the end portion of the straight portion 111 is not retained.・ It took time to insert.
Further, since the connection portion between the corner portion 112 and the straight portion 111 is located at the center portion of the bottom wall 140, sliding resistance is caused by unevenness and burrs of the connection portion when the tip of the door glass 5 abuts against the bottom wall 140. There was a risk of increase or peeling of the connecting portion.
JP 2000-25462 A Japanese Utility Model Publication No. 4-31016 Japanese Utility Model Publication No. 4-59518 JP 2000-280754 A

  Therefore, an object of the present invention is to provide a glass run for automobiles that can easily form the corner portion of the glass run and has low sliding resistance of the door glass, and a method for producing the same.

In order to solve the above-mentioned problem, the present invention of claim 1 is a glass run for automobiles in which a straight portion formed by extrusion molding and a straight portion are integrally connected by a corner portion formed by molding,
The glass run has a substantially U-shaped cross section including a vehicle outer side wall, a vehicle inner side wall, and a bottom wall, and the vehicle outer side wall and the vehicle inner side wall respectively extend toward the inside of the substantially U-shaped cross section. A seal lip and a vehicle inner seal lip are provided, and the vehicle outer side surface and the vehicle inner side surface at both ends of the door glass are sealed by the vehicle outer side seal lip and the vehicle inner side seal lip,
In the notch of the end portion of the straight portion of the glass run at the connecting portion with the corner portion, the vehicle inner side seal is formed so that a part of the side end portion side of the vehicle inner side wall remains a substantially U-shaped cross section between the vehicle outer side wall and the bottom wall. The lip is also cut at a substantially right angle with respect to the longitudinal direction of the straight portion, and the cut end surfaces of the bottom wall portion and the outer side wall portion are straight portions so that they are substantially horizontal when the glass run is attached to the door frame. It is a glass run for automobiles formed by being cut off obliquely with respect to the longitudinal direction and having a corner terminal connected to the cut-out portion .

In the first aspect of the present invention, the vehicle exterior side wall and the vehicle interior side wall are each provided with a vehicle exterior seal lip and a vehicle interior seal lip that extend toward the inside with a substantially U-shaped cross section. The inner side seal lip seals the exterior and interior sides of the door glass at both ends, and a part of the side of the side wall of the interior side wall at the notch of the straight part of the glass run at the connection with the corner The vehicle inner side seal lip is also cut out at a substantially right angle with respect to the longitudinal direction of the linear portion so that a substantially U-shaped cross section remains between the vehicle outer side wall and the bottom wall. For this reason, it is easy to cut out the vehicle inner side wall, and then the notch is filled with the molded vehicle inner side wall and the vehicle inner seal lip of the corner portion, and the shape of the straight portion of the upper side portion and the vertical side portion is formed. The large vehicle interior seal lip can be smoothly and continuously joined to the vehicle interior seal lip at the corner by molding.
In addition, the end portion of the straight portion of the glass run that is notched is such that all of the vehicle outer side wall and the bottom wall and a part of the vehicle inner side wall remain, and since it has a substantially U-shaped cross section, it is difficult to bend. The shape is maintained without sagging or deforming the end. Therefore, when the corner portion is molded, it is easy to insert the end portion of the straight portion into the corner portion molding die or attach it to the core.
Moreover, since the connection part of a straight part and a corner part is located in the center vicinity of a vehicle inner side wall, the front-end | tip of a door glass does not contact | abut and sliding resistance does not increase.

Furthermore, in the present invention of claim 1 , at least the notched end surface of the side wall of the vehicle outer side at the end of the straight side of the straight portion of the glass run mounted on the vertical side of the door frame connects the glass run to the door frame. It is notched diagonally so that it will be approximately horizontal when attached to. For this reason, since the connection line of the part seen from the vehicle exterior looks horizontal in the connection part of a corner part and a straight part after mounting | wearing with a vehicle body, it looks good.

The present invention of claim 2 is the glass run for automobiles in which a low sliding member is applied or adhered to each surface of the bottom wall of the straight portion, the vehicle interior seal lip and the vehicle exterior seal lip.

In the present invention of claim 2 , since the low sliding member is applied or adhered to the surfaces of the bottom wall of the straight portion, the vehicle inner side seal lip and the vehicle outer side seal lip, the door glass is placed in the glass run. When sliding, the resistance is low, it slides smoothly, and no abnormal noise is generated.

According to a third aspect of the present invention, the straight portion of the glass run is formed of EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion of the glass run is a seal structure of an automobile door formed of an olefinic thermoplastic elastomer. is there.

According to the third aspect of the present invention, the straight portion of the glass run is formed of EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion of the glass run is formed of an olefinic thermoplastic elastomer. Yes, it has good adhesion between straight and corners of glass run. In addition, both are olefin-based materials, have good weather resistance, can be pulverized at the same time, and can be easily recycled. Since the corner portion is formed of an olefin-based thermoplastic elastomer, vulcanization is unnecessary and molding is easy.

According to a fourth aspect of the present invention, a straight portion of a glass run having a substantially U-shaped cross section composed of a vehicle outer side wall, a vehicle inner side wall and a bottom wall is formed by extrusion molding, and the corner portion of the glass run is formed as a corner portion molding metal. In a method for manufacturing an automotive glass run in which a die is molded by a mold, and the tip of the straight portion is integrally connected with the corner portion simultaneously with the molding of the corner portion,
The vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side seal lip and a vehicle inner side seal lip that extend toward the inside with a substantially U-shaped cross section. A part of the side end portion of the side wall is cut out at a substantially right angle with respect to the longitudinal direction of the linear portion so that a substantially U-shaped cross section is left between the outer side wall and the bottom wall, and the bottom wall The cut-out end surfaces of the portion and the vehicle outer side wall portion are cut obliquely with respect to the longitudinal direction of the straight portion so as to be substantially horizontal when the glass run is attached to the door frame,
The corner portion is formed by mounting the corner portion molding die so that the tip of the notched portion of the straight portion of the glass run is inserted , and then injecting the material for forming the corner portion into the glass run to be manufactured. It is a manufacturing method.

In this invention of Claim 4 , in the manufacturing method of the glass run for motor vehicles which connects the front-end | tip of the linear part of a glass run integrally with a corner part simultaneously with the shaping | molding of a corner part , A vehicle outer side seal lip and a vehicle inner side seal lip each extending toward the inside of a substantially U-shaped cross section are provided, and a portion of the side end portion side of the vehicle inner side wall is provided at the notch at the end of the straight portion of the glass run. The vehicle inner side seal lip is cut out at a substantially right angle with respect to the longitudinal direction of the straight portion so that a substantially U-shaped cross section is left between the vehicle outer side wall and the bottom wall, and the cut end surfaces of the bottom wall portion and the vehicle outer side wall portion However, when the glass run is attached to the door frame, it is cut obliquely with respect to the longitudinal direction of the straight part so as to be substantially horizontal, attached to the corner part molding die, and then injected with the material for forming the corner part. Manufactured.
For this reason, when the end portion of the straight portion of the glass run is inserted and attached to the corner portion molding die, the end portion of the glass run remains all of the outer side wall and the bottom wall and part of the inner side wall. In addition, since it has a substantially U-shaped cross section, the end portion is not bent, drooped, or deformed, and can be easily inserted into and mounted on a corner portion molding die.
In addition, it is easy to cut out the vehicle inner side wall, and then this notch is satisfied by the molded vehicle inner side wall and the vehicle inner seal lip of the corner portion, and the shape of the straight portion of the upper side and the vertical side is formed. The large vehicle interior seal lip can be smoothly and continuously joined to the vehicle interior seal lip at the corner by molding.
Further, at the end of the vertical side portion of the straight portion of the glass run attached to the vertical side portion of the door frame, at least the notch end surface of the vehicle outer side wall portion is substantially horizontal when the glass run is attached to the door frame. It is cut diagonally so as to be. For this reason, since the connection line of the part seen from the vehicle exterior looks horizontal at the connection part between the corner part and the straight part after being mounted on the vehicle body, the manufactured glass run looks good.

According to the fifth aspect of the present invention, the vehicle outer side wall, the bottom wall, and a part of the vehicle inner side wall at the tip of the straight glass run are mounted on the core of the corner molding die, This is a glass run manufacturing method in which a material for forming a corner portion is injected and then injected into a corner portion molding die.

According to the fifth aspect of the present invention, the vehicle outer side wall, the bottom wall, and a part of the vehicle inner side wall at the tip of the straight glass run are mounted on the core of the corner molding die, After that, a material for forming the corner portion is injected into the corner portion molding die and manufactured. For this reason, a part of the vehicle outer side wall, the bottom wall, and the vehicle inner side wall have a substantially U-shaped cross section, the shape of the tip is stable and easy to mount, and the tip wraps the core of the corner mold. And can be securely held in the corner portion molding die.

The sixth aspect of the present invention is a method for producing a glass run in which the straight portion of the glass run is extrusion-molded with EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion is molded with an olefinic thermoplastic elastomer.

According to the sixth aspect of the present invention, the straight portion of the glass run is extruded with an EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion is molded with an olefinic thermoplastic elastomer. For this reason, it is the same kind of material, and the straight line portion and the corner portion of the glass run can be firmly bonded at the same time as forming the corner portion without using an adhesive. In addition, both are olefin-based materials, have good weather resistance, can be pulverized at the same time, and are easy to recycle. Since the corner portion is formed of an olefin-based thermoplastic elastomer, vulcanization is unnecessary and the molding is quick and easy.

In the glass run and the manufacturing method thereof according to the present invention, the connection portion with the corner portion of the straight portion of the glass run is cut out at a part of the side end side of the vehicle inner side wall, and the vehicle inner side wall of the corner portion is cut into that portion. Part of is formed. For this reason, the end of the straight portion of the cut glass run has a substantially U-shaped cross section, so that the shape is maintained. Therefore, when molding the corner portion, it is easy to insert or attach the end portion of the straight portion into the corner portion molding die. Moreover, since the connection part of a straight part and a corner part is located in the center vicinity of a vehicle inner side wall, the front-end | tip of a door glass does not contact | abut and sliding resistance does not increase.
In the notch of the end portion of the straight portion of the glass run at the connecting portion with the corner portion, the vehicle inner side seal is formed so that a part of the side end portion side of the vehicle inner side wall remains a substantially U-shaped cross section between the vehicle outer side wall and the bottom wall. Since the lip is also cut out at a substantially right angle to the longitudinal direction of the straight part, it is easy to cut out the inner side wall of the car, and the car inner side seal lip with a large shape of the straight part of the upper side and the vertical side. Can be smoothly and continuously joined to the inside seal lip of the corner by molding.
At the end of the vertical side of the straight part of the glass run attached to the vertical side of the door frame, at least the cut-out end surface of the vehicle outer side wall is substantially horizontal when the glass run is attached to the door frame. Since the connection line of the portion seen from the vehicle exterior appears horizontal at the connection portion between the corner portion and the straight portion after mounting on the vehicle body, it looks good.

First and second embodiments of the present invention will be described with reference to FIGS.
FIG. 11 is a side view of the front door 1 of the automobile, and FIG. 6 is a front view of the glass run 10 of the front door attached to the door frame 2. As shown in FIG. 11, the door frame 2 is provided on the upper part of the door 1, and the door glass 5 is attached so that raising / lowering is possible. That is, a glass run 10 is attached to the inner periphery of the door frame 2 to guide the raising and lowering of the door glass 5 and to seal between the door glass 5 and the door frame 2.
Although the embodiment of the present invention will be described by taking a glass run 10 for a front door as an example, it can also be used for a glass run 10 for a rear door.

First, the glass run 10 of 1st Embodiment is demonstrated with reference to FIGS.
As shown in FIG. 6, the glass run 10 according to the first embodiment is attached to a substantially linear straight portion 11 formed by extrusion as a whole and a corner portion 2 b of the door frame 2, and the straight portion 11. It consists of the corner part 12 which connects.
The straight portion 11 includes a portion attached to the upper side portion 2g of the door frame 2, a portion attached to the rear side vertical side portion 2h of the door frame 2, and a portion attached to the front side vertical side portion 2f of the door frame 2. Become.
Corner portions 12 are formed by molding these extruded portions at a corner portion by molding so as to have a shape corresponding to the door frame 2. The corner portion 12 of the glass run 10 is mounted in correspondence with the corner portion 2b of the door frame 2.

FIG. 5 shows a cross-sectional shape of the linear portion 11 attached to correspond to the upper side 2g of the door frame 2. FIG. 5 is a cross-sectional view attached to another door frame structure corresponding to the portion along the line AA in FIG.
1 and 2 are cross-sectional views of the upper side and the vertical side of the corner portion of the glass run 10. FIG. 3 is a perspective view of a corner portion of the glass run 10. FIG. 4 is a development view of the glass run 10 showing a notched state in the corner portion 12. The corner portion 12 in FIGS. 1 to 4 will be described in detail later.

The straight portion 11 of the glass run 10 has basically the same substantially U-shaped cross-section in both the portion attached to the upper side 2g of the door frame 2 and the portion attached to the vertical sides 2f, 2h. Yes. The cross-sectional shape is formed in a substantially U-shaped cross section from the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40.
A vehicle exterior seal lip 21 extends from the vicinity of the front end of the vehicle exterior side wall 20 toward the inside of the above-mentioned substantially U-shaped cross section. Further, the vehicle outer side cover lip 22 is extended from the front end of the vehicle outer side wall 20 in the vehicle outer direction. A vehicle interior seal lip 31 extends from the front end of the vehicle interior side wall 30 toward the inside of the substantially U-shaped cross section, and a vehicle interior cover lip 32 extends from the front end of the vehicle interior side wall 30 to the inner panel 2c and the garnish. It extends so that the front-end | tip of 50 may be covered.

  In the present embodiment, the door frame 2 does not have the conventional channel 3 for holding the glass run 10 at the upper side 2g, and the glass run 10 directly includes the inner panel 2c and the outer panel 2d that constitute the door frame 2. It is held by a door molding 4 attached to the tip of the door. The inner side wall 30 is held by the inner panel 2c, and the outer side wall 20 is held by the door molding 4.

  When the door glass 5 rises and the upper end of the door glass 5 enters the inside of the upper side of the glass run 10, the vehicle outer seal lip 21 and the vehicle outer seal lip 21 The vehicle interior seal lip 31 is elastically contacted to seal between the front end of the door glass 5 and the door frame 2.

A low sliding member such as urethane resin is applied to the surfaces of the vehicle exterior seal lip 21 and the vehicle interior seal lip 31 that contact the door glass 5. For this reason, when the door glass 5 slides in the glass run 10, the sliding resistance can be reduced, the door glass 5 can smoothly slide, and the generation of abnormal noise can be prevented. Run deviation can be prevented.
Also in the bottom wall 40, a low sliding member such as a urethane resin is applied to the inner surface having a substantially U-shaped cross section like the seal lips 21 and 31. For this reason, sliding resistance with the door glass 5 can be reduced.

  Further, a low-sliding member such as a silicone resin may be applied or pasted on the inner surface of the vehicle outer side wall 20 and the rear surface of the vehicle outer side seal lip 21 and the inner surface of the vehicle inner side wall 30 and the rear surface of the vehicle inner side seal lip 31. In this case, even if the vehicle outer side seal lip 21 and the vehicle inner side seal lip 31 are in close contact with the vehicle outer side wall 20 and the vehicle inner side wall 30 respectively by being pushed by the door glass 5, the vehicle outer side seal lip 21, the vehicle outer side wall 20 and Adhesion between the vehicle inner side seal lip 31 and the vehicle inner side wall 30 can be prevented.

  The vehicle inner side wall 30 and the vehicle inner side seal lip 31 are larger than the vehicle outer side wall 20 and the vehicle outer side seal lip 21 and extend obliquely and are formed thick. For this reason, the door glass 5 can be positioned on the vehicle exterior side, and the level difference between the door glass 5 and the door frame 2 can be reduced. For this reason, air resistance and wind noise are reduced, which is preferable in terms of design.

Next, the corner part 12 of the glass run 10 is demonstrated based on FIGS.
As shown in FIG. 6, the corner portion 12 is formed by connecting the straight portion 11 forming the upper side portion and the straight portion 11 forming the vertical side portion by molding. A perspective view of the corner portion 12 is shown in FIG. 3, a cross-sectional view taken along line BB in FIG. 3 on the upper side portion is shown in FIG. 1, and a cross section taken along line CC in FIG. The figure is shown in FIG.
Although the present invention will be described by taking the corner portion 12 on the rear side as an example, it can also be used for the corner portion 12 on the front side.

The cross-sectional shape on the upper side portion side is substantially the same as the cross-sectional shape of the straight line portion shown in FIG. 4 as shown in FIG. That is, it is formed in a substantially U-shaped cross section from the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40, but the difference in the cross sectional shape of the upper side portion and the vertical side portion continuously changes at the corner portion. By connecting.
Further, in accordance with the cross-sectional shapes of the upper side portion and the vertical side portion, the vehicle outer side seal lip 21 extends from the vicinity of the front end of the vehicle outer side wall 20 toward the inside of the substantially U-shaped cross section. Further, the vehicle outer side cover lip 22 extends in the vehicle outer direction at the front end of the vehicle outer side wall 20 to cover the front end of the door molding 4.

A vehicle interior seal lip 31 extends from the front end of the vehicle interior side wall 30 toward the inside of the substantially U-shaped cross section. A vehicle interior cover lip 32 extends in the vehicle interior direction at the front end of the vehicle interior side wall 30 to cover the front end of the garnish 50 attached to the inner panel 2c. The seal lips 21 and 31 and the cover lips 22 and 32 are also connected at the corner portion 12 by continuously changing the shape difference between the upper side portion and the vertical side portion at the corner portion 12.
Note that a caulking sponge 45 is stuck to the outer surface of the bottom wall 40 of the corner portion 12 to ensure the sealing performance of the corner of the corner portion of the door frame 2.

In the vicinity of the connection portion of the corner portion 12, as shown in FIGS. 1 and 4, the end portion of the straight portion 11 is notched from the side end to the vicinity of the center of the vehicle interior side wall 30. A side end side of the vehicle interior side wall 30 of the corner portion 12 which is a mold forming portion and a vehicle interior seal lip 31 continuous therewith are formed in the cutout portion.
Since the side end portion side of the vehicle interior side wall 30 is cut out to the vicinity of the center, the end portion of the straight portion 11 is the portion where the vehicle exterior side wall 20 and the bottom wall 40 are all left and is continuous with the bottom wall 40 of the vehicle interior side wall 30. Is left, and has a substantially U-shaped cross section. For this reason, the end of the straight line portion 11 is not bent and droops or deforms, and the shape is maintained. Therefore, when the corner portion 12 is molded, it is easy to insert the end portion of the straight portion 11 into a corner portion molding die 60 described later, or to attach the core portion 63 to the core 63.

Further, since the connecting portion between the straight portion 11 and the corner portion 12 is located near the center of the vehicle interior side wall 30 as shown in FIG. 1, when the door glass 5 slides in the glass run 10, the door The tip of the glass 5 does not come into contact with the connecting portion, and the sliding resistance does not increase. Further, an excessive force is not applied to the connection portion, and the connection portion does not peel off.
When the corner portion 12 is molded with respect to the straight portion 11, the corner portion 12 is connected to the straight portion 11 in a stepped manner as shown in FIG. For this reason, the joint surface of the corner part 12 and the linear part 11 becomes long, and is joined firmly.

  When the vehicle interior side wall 30 portion of the straight portion 11 is cut out, it is preferable that the vehicle interior seal lip 31 is also cut out. By cutting together, both can be cut out without considering the vehicle interior seal lip 31. In addition, in the portion of the vehicle interior seal lip 31 having a large shape, the shape of the continuous portion of the vehicle interior seal lip 31 of the straight portion 11 and the corner portion 12 can be smoothly changed and joined.

  2 is a cross-sectional view taken along the vertical side of the corner portion 12, and is a cross-sectional view taken along the line CC of FIG. Similarly, in the vertical side portion, in the vicinity of the connection portion of the corner portion 12, as shown in FIGS. 2 and 4, the end portion of the straight portion 11 is notched from the side end to the vicinity of the center of the vehicle interior side wall 30. Yes. Furthermore, the inside seal lip 31 is also cut away. A molded portion of the corner portion 12 is formed in the cutout portion.

  In the vertical side portion of the straight portion 11, it is preferable that the end surface 11a of the cut-out straight portion 11 is cut obliquely at the bottom wall 40 and the vehicle outer side wall 20 as shown in FIG. This oblique angle is set to be approximately horizontal when the glass run 10 is mounted on the door frame 2. This is because the door frame 2 is inclined with respect to the vehicle body. In this way, after the glass run 10 is mounted on the vehicle body, the connection line of the connection portion between the corner portion 12 and the straight portion 11 that can be seen from the outside of the vehicle appears horizontal on the vertical side portion as shown in FIG. Therefore, it looks good.

A second embodiment of the present invention is shown in FIGS.
In the second embodiment, a channel 3 having a substantially U-shaped cross section is attached to the door frame 2, and a glass run 10 is attached to the channel 3.
The glass run 10 of the second embodiment is similar to the glass run 10 of the first embodiment.
As shown in FIG. 8, a substantially linear straight portion 11 formed by extrusion molding as a whole and a corner portion 12 attached to the corner portion of the door frame 2 and formed by molding by connecting the straight portion 11. Consists of.

The straight portion 11 includes a portion attached to the upper side portion 2g of the door frame 2, a portion attached to the rear side vertical side portion 2h of the door frame 2, and a portion attached to the front side vertical side portion 2f of the door frame 2. Become.
A corner portion 12 is formed by molding and connecting these extrusion-molded portions by molding at the corner portions so as to have a shape corresponding to the door frame 2. The corner portion 12 of the glass run 10 is mounted in correspondence with the corner portion 2b of the door frame 2.

The glass run 10 basically has substantially the same U-shaped cross-section in both the portion attached to the upper side 2g of the door frame 2 and the portion attached to the vertical sides 2f, 2h.
As shown in FIG. 8, the cross-sectional shape of the straight portion 11 attached to the upper side portion of the door frame 2 is as shown in FIG. 8, the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40. The cross section is formed in a substantially U shape.

  A vehicle outer side seal lip 21 extends from the vicinity of the front end of the vehicle outer side wall 20 toward the inside of the substantially U-shaped cross section. A vehicle outer cover lip 22 extends along the front end of the door frame 2 so as to wrap the channel 3 from the front end of the vehicle outer side wall 20. Similarly, the vehicle interior seal lip 31 extends from the front end of the vehicle interior side wall 30 toward the inside of the above-mentioned substantially U-shaped cross section, and the vehicle interior cover lip 32 similarly extends from the front end of the vehicle interior side wall 30. It extends along the front end of the door frame 2 so as to enclose the channel 3.

As shown in FIG. 6, the corner portion 12 is formed by connecting the straight portion 11 forming the upper side portion and the straight portion 11 forming the vertical side portion by molding. FIG. 8 shows a perspective view of the corner portion 12, and FIG. 7 shows a cross-sectional view along the line DD in FIG. 8 on the upper side portion.
As shown in FIG. 7, the cross-sectional shape of the upper side is substantially the same as the cross-sectional shape of the linear portion described above. That is, it is formed in a substantially U-shaped cross section from the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40, but the difference in the cross sectional shape of the upper side portion and the vertical side portion continuously changes at the corner portion. By connecting.

As shown in FIG. 7, in the vicinity of the connection portion of the corner portion 12, the end portion of the straight portion 11 is notched from the side end to the vicinity of the center in the vehicle inner side wall 30 as in the first embodiment. . A molded portion of the corner portion 12 is formed in the cutout portion.
Since the side end portion side of the vehicle inner side wall 30 is cut out to the vicinity of the center, as in the first embodiment, the vehicle outer side wall 20 and the bottom wall 40 all remain at the end of the straight portion 11, and the vehicle inner side The side wall 30 has a part of the portion that is continuous with the bottom wall 40 and has a substantially U-shaped cross section. For this reason, the end of the straight portion 11 does not sag or deform, and the shape is maintained. Therefore, when the corner portion 12 is molded, it is easy to insert or attach the end portion of the straight portion 11 into a corner portion molding die 60 described later.

Further, as shown in FIG. 7, the connecting portion between the straight portion 11 and the corner portion 12 is located near the center of the vehicle interior side wall 30, so that when the door glass 5 slides in the glass run 10, the door glass The tip of 5 does not come into contact with the connecting portion, the sliding resistance does not increase, an excessive force is not applied to the connecting portion, and the connecting portion does not peel off.
When the corner portion 12 is molded with respect to the straight portion 11, the corner portion 12 is connected to the straight portion 11 in a stepped manner, as in the first embodiment. For this reason, the joint surface of the corner part 12 and the linear part 11 becomes long, and is joined firmly.

  When the vehicle interior side wall 30 portion of the straight portion 11 is cut out, it is preferable that the vehicle interior seal lip 31 and the vehicle interior cover lip 32 are also cut out together. By cutting together, the vehicle inner side seal lip 31 and the vehicle inner side cover lip 32 extending integrally from the vehicle inner side wall 30 can be cut out. In addition, in the portion of the car interior seal lip 31 and the vehicle interior cover lip 32 having a large shape, the shape of the continuous portion of the vehicle interior seal lip 31 and the vehicle interior cover lip 32 of the straight portion 11 and the corner portion 12 is smoothly changed. Can be joined.

As described above, the vehicle interior side wall 30 and the vehicle interior cover lip 32 are continuously formed in a substantially U shape, and a groove is provided therebetween. The inner panel 2c of the door frame 2 and the tip of the channel 3 are inserted into this groove, and the inner side of the glass run 10 is held by sandwiching the tip of the inner panel 2c between the inner side wall 30 and the inner cover lip 32. The
Similarly, a groove is provided between the outer side wall 20 and the outer cover lip 22, and the inner panel 2 c and the tip of the channel 3 are inserted into the groove.

In both the first and second embodiments, in molding the straight portion 11 of the glass run 10, synthetic rubber, thermoplastic elastomer, or soft synthetic resin is used as a molding material. For example, in synthetic rubber, EPDM is used. For rubbers and thermoplastic elastomers, polyolefin elastomers are used, and for soft synthetic resins, soft vinyl chloride is used.
In the case of synthetic rubber, it is conveyed to a vulcanizing tank after extrusion and heated by hot air or high frequency to vulcanize. In the case of a thermoplastic elastomer or a soft synthetic resin, it is cooled and solidified. Thereafter, it is cut to a predetermined length to produce an extruded part.

Next, a method for molding the corner portion 12 using the corner portion molding die 60 will be described with reference to FIGS. 9 and 10.
In the molding of the molded portion of the corner portion 12, the extruded member produced as described above is first cut into a predetermined dimension. And in the connection part with the corner | angular part 12 of the cut extrusion part, the vehicle interior side seal lip 31 and the vehicle interior side cover lip 32 which are continuous with the half of the vehicle interior side wall 30 and the vehicle interior side wall 30 of the glass run 10 simultaneously. Resect.

  The tip of the straight portion 11 of the cut glass run 10 is attached to the core 63 of the corner portion molding die 60 as shown in FIG. At this time, since the tip of the straight portion 11 is substantially half of the vehicle inner side wall 30, the bottom wall 40, and the entire vehicle outer side wall 20 and is substantially U-shaped in cross section, the shape of the tip is stable. It is easy to mount on the core 63, and the tip can be mounted so as to wrap the core 63 of the corner molding die 60, and the core 63 can be securely held by the core 63. it can. Further, the tip of the glass run 10 at the vertical side portion is similarly held by the core 63.

Thereafter, the core 63 is fitted into the lower mold 62 of the corner portion molding die 60, and the upper mold 61 is closed. Then, the tip of the upper side portion and the vertical side portion of the glass run 10 is attached to the corner portion molding die 60.
Alternatively, the upper die 61 may be closed by inserting the tip of the straight portion 11 of the glass run 10 after the core 63 is fitted into the lower die 62.

When the mold 60 is closed, a cavity 64 for forming the corner portion 12 is formed, and a material for forming the corner portion is injected into the cavity 64 for manufacturing.
It is preferable to use the same type of molding material as that used for the extruded part. In the case of a thermoplastic elastomer or a soft synthetic resin, since the injected material is melted when injected into the mold, the extruded part and the molded part are integrally fused by the heat and pressure.

When the straight line portion 11 of the glass run 10 is formed of EPDM rubber or an olefinic thermoplastic elastomer, the corner portion 12 of the glass run 10 is preferably formed of an olefinic thermoplastic elastomer. In this case, the same kind of material is used, and the adhesion between the straight portion 11 and the corner portion 12 of the glass run 10 is good. In addition, both are olefin-based materials, have good weather resistance, can be pulverized at the same time, and can be easily recycled. In the case of an olefin-based thermoplastic elastomer, it is easy to produce because vulcanization is unnecessary.
In the case of synthetic rubber, the mold is heated and vulcanized after being poured into the mold. At this time, since the extrusion molding part and the molding part can be vulcanized and bonded using the same material or the same kind of material, they are fixed together.

It is sectional drawing of the upper side part side of the corner part of the glass run which is the 1st Embodiment of this invention, and is sectional drawing along the BB line of FIG. It is sectional drawing by the side of the vertical side of the corner part of the glass run which is the 1st Embodiment of this invention, and is sectional drawing along CC line of FIG. It is a perspective view of the corner part of the glass run which is the 1st Embodiment of this invention. It is an expanded view which shows the connection part of the linear part and corner part of the glass run which is the 1st Embodiment of this invention. It is sectional drawing of the linear part of the glass run which is the 1st Embodiment of this invention, and is sectional drawing along the AA of FIG. It is a front view of the glass run which is the 1st Embodiment of this invention. It is sectional drawing of the upper side part side of the corner part of the glass run which is the 2nd Embodiment of this invention, and is sectional drawing along the DD line | wire of FIG. It is a perspective view of the corner part of the glass run which is the 2nd Embodiment of this invention. It is a perspective view of the corner part shaping die which shape | molds the corner part of the glass run which is embodiment of this invention. It is sectional drawing of the corner part shaping die which shape | molds the corner part of the glass run which is embodiment of this invention. It is a side view of a motor vehicle door. It is sectional drawing of the upper side part of the conventional door frame, and is sectional drawing along the AA line of FIG. It is sectional drawing of the corner part of the conventional glass run. It is a perspective view of the straight part tip of other conventional glass runs.

Explanation of symbols

2 Door frame 5 Door glass 10 Glass run 11 Straight line portion 12 Corner portion 20 Car outer side wall 21 Car outer side seal lip 30 Car inner side wall 31 Car inner side seal lip 40 Bottom wall 60 Corner part molding die

Claims (6)

In a glass run for automobiles that integrally connects a straight portion formed by extrusion molding and a corner portion formed by mold forming, the straight portion,
The glass run has a substantially U-shaped cross section consisting of a vehicle outer side wall, a vehicle inner side wall and a bottom wall,
The vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side seal lip and a vehicle inner side seal lip that extend toward the inside of the substantially U-shaped cross section. Seal the outside and inside surfaces of both sides of the door glass,
In the notch of the end portion of the straight portion of the glass run at the connecting portion with the corner portion, a part of the side end portion side of the vehicle inner side wall is left substantially U-shaped in cross section between the vehicle outer side wall and the bottom wall. The vehicle interior seal lip is also cut out at a substantially right angle to the longitudinal direction of the straight portion, and the cut out end surfaces of the bottom wall portion and the vehicle outer side wall portion are substantially horizontal when the glass run is attached to the door frame. A glass run for automobiles formed by cutting obliquely with respect to the longitudinal direction of the straight portion so that the end of the corner portion is connected to the cut portion . 2. The glass run for an automobile according to claim 1 , wherein a low-sliding member is applied or adhered to each surface of the bottom wall of the straight portion, the vehicle inner seal lip, and the vehicle outer seal lip. The automotive glass run according to claim 1 or 2, wherein the straight portion of the glass run is formed of EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion of the glass run is formed of an olefinic thermoplastic elastomer. . A straight portion of a glass run having a substantially U-shaped cross section consisting of a vehicle outer side wall, a vehicle inner side wall and a bottom wall is formed by extrusion molding, and the corner portion of the glass run is molded by a corner portion molding die, In the manufacturing method of an automotive glass run in which the tip of the part is integrally connected to the corner part simultaneously with the molding of the corner part,
The vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side seal lip and a vehicle inner side seal lip that extend toward the inner side of the substantially U-shaped cross section. The vehicle interior side seal lip is also substantially perpendicular to the longitudinal direction of the linear portion so that a part of the side end portion of the vehicle interior side wall remains substantially U-shaped in cross section between the vehicle exterior side wall and the bottom wall. With the notch, the notch end surfaces of the bottom wall portion and the vehicle outer side wall portion are notched obliquely with respect to the longitudinal direction of the linear portion so as to be substantially horizontal when the glass run is attached to the door frame,
The corner part is formed by inserting the corner part molding die so as to insert the tip of the notched part of the straight line glass run, and then injecting a material for forming the corner part, Manufacturing method of glass run to manufacture. The corner portion molding die is mounted on the corner of the corner molding die with a part of the side of the vehicle outer side wall and bottom wall at the front end of the glass run of the straight portion and a side continuous with the bottom wall of the vehicle inner side wall. The glass run manufacturing method according to claim 4 , wherein the material for forming the corner portion is injected into a corner portion molding die and then molded. The straight portion of the glass run, and extruded using EPDM rubber or olefinic thermoplastic elastomer, the corner portion, according to claim 4 or claim 5 for molding using an olefinic thermoplastic elastomer Glass run manufacturing method.

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