JP2009154768A - Glass run for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run easily manufacturable and reduced in weight and cost. <P>SOLUTION: A vehicle outer seal lip 21 and a vehicle inner seal lip 31 are respectively formed on the vehicle outer sidewall 20 and the vehicle inner sidewall 30 of the body of the glass run 10. Respective roots 22, 32 of the vehicle outer seal lip 21 and the vehicle inner seal lip 31 respectively continuous with the vehicle outer sidewall 20 and the vehicle inner sidewall 30 are formed of olefin thermoplastic elastomer. Respective connection parts 26, 36 of the vehicle outer sidewall 20 and the vehicle inner sidewall 30 continuous with a bottom wall 40 are formed of the olefin thermoplastic elastomer. The vehicle outer sidewall 20, the vehicle inner sidewall 30 and the bottom wall 40 excluding the connection parts 26, 36 are formed of thermoplastic materials such as synthetic resin and thermoplastic elastomer harder than the thermoplastic elastomer forming the roots of the seal lips and the connections parts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a glass run having a straight portion and a corner portion, which is attached to the inner periphery of a door frame of an automobile door and guides the raising and lowering of the door glass.

  As shown in FIG. 4, 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 door 1 of the automobile. The entire conventional glass run 110 is shown in FIG. 3, and cross-sectional views of the conventional glass run 110 attached to the straight portion of the door frame 2 are shown in FIGS.

  Conventionally, as shown in FIG. 4, the glass run 110 is attached in the channel 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. Further, as shown in FIG. 3, the glass run 110 includes an upper side portion of the door frame 2 formed of the straight portion 111 formed by extrusion molding, and a front side vertical side portion and a rear side vertical side portion that are also extruded. These are connected by a corner 112 formed by molding to match the shape of the corner 2b of the door frame 2.

  The seal between the door 1 and the vehicle body is a door weather strip (not shown) attached to the outer periphery of the door panel and door frame 2 and / or an opening trim weather attached to the flange of the opening of the vehicle body. It is made by a strip (not shown).

  As shown in FIG. 5, the straight portion 111 of the main body of 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 outer side seal lip 121 is provided so as to extend from the vicinity of the front end of the vehicle outer side wall 120 toward the inside of the main body having a 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 (for example, see Patent Document 1).

The door glass 5 slides inside a substantially U-shaped cross section of the main body of the glass run 110, and both side surfaces at the end of the door glass 5 are sealed by the vehicle outer seal lip 121 and the vehicle inner seal lip 131. Is retained.
At this time, as shown in FIG. 5, low sliding members 122 and 132 are formed on the surfaces of the vehicle outer seal lip 121 and the vehicle inner seal lip 131, respectively, in order to reduce the sliding resistance when the door glass 5 is raised and lowered. There is something.

  Further, the wall thickness of the vehicle interior seal lip 131 is increased or the vehicle interior seal lip 131 is prevented from being lowered by the lifting and vibration of the door glass 5 so that the sealing force between the vehicle exterior seal lip 121 and the vehicle interior seal lip 131 does not decrease. Some have a sponge elastic auxiliary member 133 formed on the back surface. However, in such a glass run 110, the thickness of the seal lip is increased, and the labor and cost for the low sliding members 122 and 132 are increased.

  For this reason, as shown in FIG. 6, in order to reduce the sliding resistance at the time of raising / lowering of the door glass 5 and to prevent the smooth raising / lowering of the door glass 5 and the generation of abnormal noise, the sliding member is abolished and the vehicle exterior side is eliminated. There is a glass run 210 in which the seal lip 221 and the vehicle interior seal lip 231 are formed of a hard material, and the vehicle exterior side wall 220, the vehicle interior side wall 230, and the bottom wall 240 are formed of a soft material (see, for example, Patent Document 2). ).

However, even if the sliding member is abolished in this way, the main body of the glass run 210 is made of a soft material such as solid rubber or thermoplastic elastomer. It was also difficult to reduce.
JP 2001-219745 A Japanese Utility Model Publication No. 5-93940

  Accordingly, an object of the present invention is to provide a glass run that is easy to manufacture and has reduced weight and cost.

In order to solve the above problems, the present invention of claim 1 is a glass run that is attached to the inner periphery of a door frame of an automobile door and guides the raising and lowering of the door glass.
The main body of 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, and each of the vehicle outer side wall and the vehicle inner side wall has a substantially U-shaped cross section inside the main body. The vehicle outer side seal lip and the vehicle inner side seal lip that extend toward the vehicle side are provided, and the vehicle outer side surface and the vehicle inner side surface of the end portion of the door glass are sealed by the vehicle outer side and vehicle inner side seal lips,
The root portions of the vehicle outer side seal lip and the vehicle inner side seal lip that are respectively continuous with the vehicle outer side wall and the vehicle inner side wall are formed of an olefin-based thermoplastic elastomer, and the vehicle outer side wall and the vehicle inner side wall are continuous with the bottom wall. Each connecting part is formed of an olefinic thermoplastic elastomer,
The vehicle outer side wall, the vehicle inner side wall, and the bottom wall, excluding the connection portion, are formed of a thermoplastic material such as a synthetic resin harder than the thermoplastic elastomer forming the seal lip root portion or the connection portion, or a thermoplastic elastomer. This is a glass run for automobiles.

  In the first aspect of the present invention, the glass run main body has a substantially U-shaped cross section including an outer side wall, an inner side wall, and a bottom wall. An outside seal lip and an inside seal lip extending toward the inside of the substantially U-shaped body are provided, and the outside surface and inside surface of the door glass are sealed by the outside seal lip and the inside seal lip. Yes. For this reason, the vehicle exterior seal lip and the vehicle interior seal lip can hold the door glass and seal between the door frame and the door glass.

  The base part of the vehicle outer side seal lip and the vehicle inner side seal lip that are continuous with the vehicle outer side wall and the vehicle inner side wall, respectively, is softer than the rigid thermoplastic material forming the vehicle outer side wall, the vehicle inner side wall, and the bottom wall. It is formed of a thermoplastic elastomer. For this reason, even when the vehicle exterior seal lip and the vehicle interior seal lip are made of a thermoplastic material harder than the thermoplastic elastomer that forms the root portion of the seal lip, the door glass moves up and down. The base part of the vehicle exterior seal lip and the vehicle interior seal lip are flexibly bent, and the vehicle exterior seal lip and vehicle interior seal lip abut against the door glass. Occurrence can be prevented.

  Each connecting portion where the vehicle outer side wall and the vehicle inner side wall are continuous with the bottom wall is formed of an olefin-based thermoplastic elastomer. For this reason, when the glass run is mounted on the door frame, the vehicle outer side wall and the vehicle inner side wall can bend inward, and mounting is easy. In addition, when manufacturing a glass run, the vehicle outer side wall and the vehicle inner side wall can be formed in a U-shape, and the vehicle outer seal lip and the vehicle inner seal lip do not come into contact with each other at the time of manufacture, so that manufacturing is easy. It is.

  The outer side wall, the inner side wall, and the bottom wall, excluding the connecting portion, are formed of a thermoplastic material such as a synthetic resin or a thermoplastic elastomer that is harder than the olefin-based thermoplastic elastomer that forms the seal lip root portion and the connecting portion. Therefore, the strength of the glass run body can be maintained even if the vehicle outer side wall, the vehicle inner side wall and the bottom wall are made thin, and the door glass is retained even when the door glass moves up and down. , Sealability can be ensured. Since the thickness is reduced, the weight of the glass run can be reduced, and the manufacturing cost can be greatly reduced.

  In the present invention of claim 2, the vehicle outer side seal lip and the vehicle inner side seal lip are all formed of an olefin-based thermoplastic elastomer softer than the hard thermoplastic material forming the vehicle outer side wall, the vehicle inner side wall, and the bottom wall. A glass run for automobiles.

  In the present invention of claim 2, since the vehicle exterior seal lip and the vehicle interior seal lip are all formed of an olefin-based thermoplastic elastomer including the vehicle exterior seal lip root and the vehicle interior seal lip root, As a result, it is possible to improve the flexibility of the seal lip on the vehicle interior side and to ensure the sealing performance even when the door glass is sucked out and vibrated at high speeds.

  The present invention of claim 3 is an automotive glass run in which the olefinic thermoplastic elastomer and the thermoplastic elastomer are cross-linked olefinic thermoplastic elastomers (TPV).

  According to the third aspect of the present invention, since the olefinic thermoplastic elastomer and the thermoplastic elastomer are cross-linked olefinic thermoplastic elastomers (TPV), they have greater flexibility and elasticity. Can be easily bent, and the retention and sealing performance of the door glass can be improved.

  According to the present invention of claim 4, the olefinic thermoplastic elastomer forming the seal lip root portion and the connecting portion has an IRHD hardness of 60 ° to 90 °, and the seal lip root portion and the connecting portion form the olefin thermoplasticity. A thermoplastic elastomer harder than the elastomer is an automotive glass run having a Shore D hardness of 30 ° to 55 °.

According to the fourth aspect of the present invention, the olefinic thermoplastic elastomer forming the seal lip root portion and the connecting portion has an IRHD hardness of 60 ° to 90 °, and is therefore highly flexible. At the root portion of the inner seal lip, the vehicle outer side seal lip and the vehicle inner side seal lip are easily bent, and the vehicle outer side wall and the vehicle inner side wall can be reliably bent at the vehicle outer side wall connecting portion and the vehicle inner side wall connecting portion.
The thermoplastic elastomer harder than the olefinic thermoplastic elastomer forming the root part and the connecting part of the seal lip has a Shore D hardness of 30 ° to 55 °. The strength of the side wall can be ensured, and the vehicle outer seal lip and the vehicle inner seal lip can be held and reliably brought into contact with the door glass.

  According to the fifth aspect of the present invention, the vehicle outer side wall and the vehicle inner side wall are provided with a vehicle outer side cover lip and a vehicle inner side cover lip extending from the tip toward the outer side of the main body having a substantially U-shaped cross section. It is a glass run.

  In the present invention of claim 5, the vehicle outer side wall and the vehicle inner side wall are each provided with a vehicle outer side cover lip and a vehicle inner side cover lip extending from the tip toward the outer side of the main body having a substantially U-shaped cross section of the main body. For this reason, the side edges of the door frame and the channel can be covered with the vehicle outer cover lip and the vehicle inner cover lip, improving the appearance, the vehicle outer cover lip and the vehicle outer side wall, and the vehicle inner cover lip and the vehicle inner side, respectively. The door frame and the channel can be sandwiched between the side walls.

  According to a sixth aspect of the present invention, the vehicle outer side cover lip and the vehicle inner side cover lip are automotive glass runs formed of a soft olefinic thermoplastic elastomer.

  In the present invention of claim 6, since the vehicle outer cover lip and the vehicle inner cover lip are formed of a soft olefin-based thermoplastic elastomer, the boundary line between the cover lip and the root portion is eliminated, and the surface of the cover lip is removed. It can be smooth and look good.

  The present invention of claim 7 is an automotive glass run in which a ridge or a low sliding member layer is formed on the inner surface of the vehicle outer side wall and the inner surface of the bottom wall.

  According to the seventh aspect of the present invention, since the protrusion or the low sliding member layer is formed on the inner surface of the vehicle outer side wall and the inner surface of the bottom wall, when the door glass enters the main body of the glass run, It is possible to prevent the lip from coming into close contact with the inner surface of the vehicle outer side wall and prevent the generation of abnormal noise, and to prevent the generation of the abnormal noise due to the tip of the door glass sliding with the inner surface of the bottom wall.

  The present invention of claim 8 is an automotive glass run in which an auxiliary lip is formed on the inner surface of the inner side wall of the vehicle to contact the inner seal lip when the door glass enters the glass run body.

  According to the present invention of claim 8, an auxiliary lip is formed on the inner surface of the vehicle interior side wall so as to contact the vehicle interior seal lip when the door glass enters the glass run body. For this reason, when the door glass enters the glass run body, the inside seal lip can be held and the inside seal lip can push the side of the door glass with elasticity. The sealability can be secured.

  The present invention of claim 9 is an automotive glass run in which a seal lip that abuts against a door frame or a channel is formed on the bottom surface of the bottom wall.

  In the present invention of claim 9, since the seal lip that contacts the door frame or channel is formed on the bottom surface of the bottom wall, the sealing performance between the door glass and the door frame or channel can be ensured, and the glass run can be attached to the door. It can be held in a frame or channel.

The root portions of the vehicle outer side seal lip and the vehicle inner side seal lip that are continuous with the vehicle outer side wall and the vehicle inner side wall, respectively, and the connecting portions where the vehicle outer side wall and the vehicle inner side wall are continuous with the bottom wall are the vehicle outer side wall, Because it is made of olefinic thermoplastic elastomer that is softer than the hard thermoplastic material that forms the inner side wall and bottom wall of the car, the base part and the connecting part flexibly bend, and the car outer seal lip and the car inner side The sealing lip ensures sealing performance and is easy to install on the door frame.
The outer side wall, the inner side wall, and the bottom wall, excluding the connecting portion, are formed of a thermoplastic material such as a synthetic resin or a thermoplastic elastomer that is harder than the olefin-based thermoplastic elastomer that forms the seal lip root portion and the connecting portion. Therefore, the thickness of the vehicle outer side wall, the vehicle inner side wall and the bottom wall can be reduced, the strength of the glass run body can be maintained, the sealing performance can be secured, and the weight of the glass run can be reduced. it can.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 4 is a front view of the front door 1 of the automobile, and FIG. 3 is a front view of the glass run 10 of the front door attached to the door frame 2 of the door 1. As shown in FIG. 4, the door frame 2 is provided in 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.

As shown in FIG. 3, the glass run 10 is attached to the straight part 11 formed by extrusion molding as a whole and the corner part 2b of the door frame 2, and is formed by molding by connecting the straight part 11 described above. Corner portion 12.
The straight portion 11 includes a portion attached to the upper side portion of the door frame 2, a portion attached to the rear side vertical side portion of the door frame 2, and a portion attached to the division sash that forms the front side vertical side portion of the door frame 2. Consists of.

  The corners 12 are formed by forming the extruded parts by molding at the front and rear corners so as to have a shape corresponding to the door frame 2 and connecting the straight parts 11. Yes. The corner portion 12 of the glass run 10 is attached to the corner portion 2b of the door frame 2.

Below, the glass run 10 attached to the upper side part and rear side vertical side part of the door 1 on the front side will be described as an example.
FIG. 1 is a cross-sectional view taken along line AA in FIG. 4 of the longitudinal side portion on the rear side of the glass run 10 according to the first embodiment of the present invention, and FIG. It is sectional drawing along the BB line of FIG. 4 of the rear side upper side part of the glass run 10 which is embodiment of this.
First, the first embodiment will be described, and then the second embodiment will be described.

As shown in FIG. 1, the cross-sectional shape of the straight portion 11 of the glass run 10 attached to the vertical side portion of the door frame 2 is substantially cross-sectional from the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40. It is formed in a U shape. As will be described later, the vehicle interior side wall 30 is formed larger than the vehicle exterior side wall 20, and the substantially U-shaped cross section is formed in a large asymmetric shape on the vehicle interior side.
The main body of the glass run 10 basically has both a portion attached to the upper side portion of the door frame 2 and a portion attached to the vertical side portion. What is attached to will be described later.

The vehicle outer side wall 20 of the glass run 10 is formed in a substantially plate shape in cross section.
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 main body having a substantially U-shaped cross section. Further, the vehicle outer side cover lip 23 extends from the front end of the vehicle outer side wall 20 in the vehicle outer direction. The vehicle outer side cover lip 23 covers the flange portion where the vehicle outer side wall of the channel 3 to which the glass run 10 is attached and the tip of the door outer panel 2c are joined. The channel 3 forms a substantially U-shaped section and holds the glass run 10 therein.

As described above, the outside seal lip 21 extends obliquely toward the inside of the main body of the glass run 10 on the inside of the outside wall 20.
When the door glass 5 moves up and down and the side edge of the door glass 5 slides inside the vertical side of the main body of the glass run 10, this is applied to both the inside and outside of the vehicle at the side edge of the door glass 5. A vehicle outer side seal lip 21 and a vehicle inner side seal lip 31 described later elastically contact each other to seal between the side edge of the door glass 5 and the door frame 2.

The vehicle exterior side wall 20 and the vehicle exterior seal lip 21 are formed of a thermoplastic elastomer that is a thermoplastic material that is harder than the soft olefinic thermoplastic elastomer that forms the vehicle exterior seal lip root portion 22.
Since the vehicle outer side wall 20 and the vehicle outer seal lip 21 are made of a thermoplastic elastomer harder than the soft olefin-based thermoplastic elastomer forming the vehicle outer seal lip root portion 22, even if the wall thickness thereof is made thin. The strength of the main body of the glass run 10 can be maintained, and even when the door glass 5 moves up and down, the door glass 5 can be held and sealing performance can be secured. Furthermore, since the vehicle outer side wall 20 and the vehicle outer seal lip 21 are formed thin, the overall weight of the glass run 10 can be reduced, and the manufacturing cost can be greatly reduced.
Conventionally, when the vehicle outer side wall 20 is formed of solid rubber, a thickness of about 3 mm is required. However, when it is formed of a hard thermoplastic elastomer, the thickness can be about 2 mm.

  The hard thermoplastic elastomer has high strength and little change with time, so it does not deteriorate for a long time and has a rubber-like elasticity, so that it can follow the curvature of the door glass 5 and therefore has a sealing property of the glass run 10. It can be held stably. Since the soft thermoplastic elastomer that forms the seal lip root and connecting portion is olefinic, when olefinic is used as the hard thermoplastic elastomer, it has even better adhesion and is easy to recycle. It is.

  The hard thermoplastic elastomer preferably has a Shore D hardness of 30 ° to 55 °. In this case, the vehicle outer side wall 20 and the vehicle outer side seal lip 21 have sufficient strength to ensure the strength of the vehicle outer side wall 20 and hold the vehicle outer side seal lip 21 so as to securely contact the door glass 5. Can be touched. The door-side seal lip 21 is also brought into contact with the door glass 5 and can be secured without being deformed even if it slides.

  A vehicle outer side seal lip protrusion 25 that is continuous in the longitudinal direction may be formed on a surface of the vehicle outer side seal lip 21 that is in contact with the door glass 5, that is, a surface on the opening side of the main body of the glass run 10. The vehicle exterior seal lip protrusion 25 can be formed of a low sliding material layer or can be formed by applying a silicone resin. In this case, even if the vehicle exterior seal lip 21 is formed of a hard thermoplastic elastomer, the door glass 5 and the glass run 10 are further moved when the door glass 5 moves up and down and slides on the glass run 10. Thus, the sliding resistance can be reduced, the generation of abnormal noise can be prevented, and smooth elevation can be ensured.

  A vehicle outer seal lip root portion 22 which is a root portion of the vehicle outer side seal lip 21 continuous with the vehicle outer side wall 20 is formed of a soft olefin-based thermoplastic elastomer. For this reason, even if the vehicle exterior seal lip 21 is formed of a thermoplastic elastomer harder than the vehicle exterior seal lip root portion 22, even when the door glass 5 moves up and down, The outer seal lip root portion 22 of the outer seal lip 21 is flexibly bent so that the vehicle outer seal lip 21 comes into contact with the door glass 5 to ensure sealing performance and to prevent the generation of noise.

It is preferable to use a material having an IRHD hardness of 60 ° to 90 ° as the olefinic thermoplastic elastomer forming the outer seal lip root portion 22. In this case, the vehicle exterior seal lip 21 can be reliably bent with sufficient flexibility.
The olefinic thermoplastic elastomer is preferably a cross-linked olefinic thermoplastic elastomer (TPV). In this case, the flexibility and elasticity are greater, the outside seal lip is easily bent, and the retention and sealing performance of the door glass can be improved.

  The vehicle outer side wall connecting portion 26 where the vehicle outer side wall 20 is continuous with the bottom wall 40 is also formed of an olefin-based thermoplastic elastomer. For this reason, when the glass run 10 is attached to the door frame 2, the vehicle outer side wall 20 can be bent inward so as to be fitted inside the channel 3, and attachment is easy. Further, when the glass run 10 is manufactured, the vehicle outer side wall 20 and the vehicle inner side wall 30 can be formed in a C shape so that the tips of the vehicle outer seal lip 21 and the vehicle inner seal lip 31 are in contact with each other at the time of manufacture. Therefore, the surface treatment of the vehicle outer side seal lip 21 and the vehicle inner side seal lip 31 is easy, and the production is easy.

  On the inner side surface of the vehicle outer side wall 20, a vehicle outer side wall ridge portion 24 continuous in the longitudinal direction is formed. For this reason, even when the door glass 5 moves up and down due to the curvature of the door glass 5 or the negative pressure during traveling, or even when the door glass 5 is bent and strongly pressed against the vehicle outer seal lip 21, 21 can secure the sealing property of the vehicle outer side seal lip 21 without being in close contact with the vehicle outer side wall 20, and can prevent the generation of abnormal noise.

  A vehicle outer cover lip 23 extends from the vicinity of the front end of the vehicle outer side wall 20 in the vehicle outer direction. The vehicle outer side cover lip 23 covers the flange portion where the vehicle outer side wall of the channel 3 to which the glass run 10 is attached and the tip of the door outer panel 2c are joined. The vehicle outer side cover lip 23 extending from the vicinity of the front end of the vehicle outer side wall 20 is formed of a thermoplastic elastomer harder than a soft olefin-based thermoplastic elastomer forming the vehicle outer side seal lip root portion 22. 20 is formed integrally. Further, the vehicle outer side cover lip 23 is preferably formed of a soft thermoplastic elastomer. By integrally forming the vehicle exterior seal lip root portion 22 and the vehicle exterior cover lip 23, the boundary line between the vehicle exterior cover lip 23, the vehicle exterior seal lip root portion 22 and the front end portion of the vehicle exterior side wall 20 is eliminated. It can be smooth and look good. Further, since the vehicle outer side cover lip 23 is formed of a soft thermoplastic elastomer, good assemblability can be obtained.

As shown in FIG. 1, the bottom wall 40 may have a bottom wall back surface recess 42 whose back surface is recessed, or may be formed in a substantially plate shape. If the bottom wall back surface recess 42 is formed, the glass run 10 can be further reduced in weight.
A bottom wall groove 41 is formed on the inner surface of the main body of the glass run 10 of the bottom wall 40 having a substantially U-shaped cross section. Instead of the bottom wall groove 41, a bottom wall low sliding member layer may be formed. In this case, sliding resistance with the side edge of the door glass 5 can be reduced.

A bottom wall seal lip 44 can be formed on the bottom surface of the bottom wall 40 to abut the door frame or channel. When the bottom wall seal lip 44 is formed, a sealing property between the door glass 5 and the door frame 2 or the channel 3 can be secured.
Further, the bottom wall holding lip 43 can be formed laterally from the bottom surface of the bottom wall 40. In this case, the sealing performance can be ensured and the glass run 10 can be held in the door frame 2 or the channel 3.

  Similar to the vehicle outer side wall 20, the vehicle inner side wall 30 of the glass run 10 is formed in a substantially plate-like cross section. The vehicle interior side wall 30 is formed larger than the vehicle exterior side wall 20. Since the vehicle interior side wall 30 is formed larger than the vehicle exterior side wall 20, the glass run 10 can be securely held in the channel 3, the door glass 5 can be securely held, and the door glass 5 can be positioned outwardly. The step between the door glass 5 and the door frame 2 can be reduced, the wind noise can be reduced, and the appearance can be improved.

  Similar to the vehicle outer side wall 20, a vehicle inner seal lip 31 extends from the vicinity of the tip of the vehicle inner side wall 30 toward the inside of the main body in a substantially U-shaped cross section. A vehicle interior cover lip 33 is extended from the front end of the vehicle interior side wall 30 in the vehicle exterior direction. The vehicle interior cover lip 33 covers the flange portion where the vehicle interior side wall of the channel 3 to which the glass run 10 is attached and the front end of the door inner panel 2d are joined. The vehicle interior side cover lip 33 extending from the vicinity of the front end of the vehicle interior side wall 30 is formed of a thermoplastic elastomer harder than the soft olefin-based thermoplastic elastomer forming the vehicle interior seal lip root portion 32. 30 and a single unit. Further, the vehicle interior cover lip 33 is preferably formed of a soft thermoplastic elastomer. By integrally forming the vehicle interior seal lip root portion 32 and the vehicle interior cover lip 33, the boundary line between the vehicle interior cover lip 33, the vehicle interior seal lip root portion 32, and the front end portion of the vehicle interior side wall 30 is eliminated. It can be smooth and look good. Further, since the vehicle interior cover lip 33 is formed of a soft thermoplastic elastomer, good assemblability can be obtained.

Similar to the vehicle outer side seal lip 21, a vehicle inner side seal lip 31 extends obliquely toward the inner side of the main body of the glass run 10 on the inner side of the vehicle inner side wall 30. Seal the gap.
An inboard seal lip skin layer 35, which is a low sliding member, may be formed on the surface of the inboard seal lip 31 that contacts the door glass 5. Instead of the vehicle inner seal lip skin layer 35, a protrusion can be formed.

  Similar to the vehicle outer side wall 20 and the vehicle outer side seal lip 21, the vehicle inner side wall 30 and the vehicle inner side seal lip 31 are harder than the soft olefin-based thermoplastic elastomer forming the vehicle inner side seal lip root portion 32. Made of elastomer. For this reason, the thickness can be reduced to about 2 mm, the strength of the main body of the glass run 10 can be maintained even when the thickness is reduced, and the door glass 5 can be moved up and down. 5 can be maintained to ensure sealing performance. Further, the overall weight of the glass run 10 can be reduced, and the manufacturing cost can be greatly reduced.

The vehicle interior seal lip root portion 32, which is the root portion of the vehicle interior seal lip 31 continuous with the vehicle interior side wall 30, is formed of a soft olefin-based thermoplastic elastomer, like the vehicle exterior seal lip root portion 22. For this reason, even if the vehicle interior seal lip 31 is formed of a thermoplastic elastomer harder than the soft olefin-based thermoplastic elastomer forming the vehicle interior seal lip root portion 32, the vehicle interior side when the door glass 5 moves up and down. The vehicle interior seal lip root portion 32 of the seal lip 31 is flexibly bent so that the vehicle interior seal lip 31 abuts against the door glass 5 to ensure the sealing performance and to prevent the generation of noise.
The soft olefin-based thermoplastic elastomer uses the same material as the vehicle outer side wall connecting portion 26.

  The vehicle interior side wall connecting portion 36 where the vehicle interior side wall 30 is continuous with the bottom wall 40 is also formed of a soft olefin-based thermoplastic elastomer. For this reason, when the glass run 10 is attached to the door frame 2, the inner side wall 30 can be bent inward so as to be fitted inside the channel 3, so that the attachment is easy. Further, when the glass run 10 is manufactured, the vehicle outer side wall 20 and the vehicle inner side wall 30 can be formed in a C shape so that the tips of the vehicle outer seal lip 21 and the vehicle inner seal lip 31 are in contact with each other at the time of manufacture. In addition, the surface treatment of the vehicle interior seal lip 31 is easy and the manufacture is easy.

  On the inner side surface of the vehicle inner side wall 30, a vehicle inner side wall auxiliary lip 34 is formed obliquely upward so as to contact the back surface of the vehicle inner side seal lip 31. For this reason, when the door glass 5 moves up and down and slides on the glass run 10, the vehicle interior seal lip 31 can be pushed up so that the door glass 5 is positioned in the vehicle exterior direction. Thereby, while preventing the vibration of the door glass 5, the level | step difference of the door glass 5 and the door frame 2 can be made small, and an abnormal noise and a wind noise can be prevented.

  Furthermore, the vehicle inner side wall protrusions 38 can be formed on the outer surface of the vehicle inner side wall 30. In this case, when the glass run 10 is attached to the channel 3, it is easy to insert the vehicle inner side wall 30 into the channel 3, and the vehicle inner side wall 30 is held so that the space between the channel 3 and the vehicle inner side wall 30 is reduced. Sealability can be secured.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view taken along the line BB in FIG. 4 of the upper side portion of the rear side of the glass run 10 according to the second embodiment of the present invention.
In the second embodiment, the shapes of the vehicle outer side seal lip 21 and the vehicle inner side seal lip 31 are different, and the other portions are the same. For this reason, a different part is demonstrated and description of the same part is abbreviate | omitted.

In the second embodiment, the vehicle exterior seal lip 21 and the vehicle exterior seal lip root portion 22 are integrally made of an olefin softer than the hard thermoplastic elastomer forming the vehicle exterior side wall, the vehicle interior side wall, and the bottom wall. Similarly, the vehicle inner seal lip 31 and the vehicle inner seal lip root portion 32 are all formed of a soft olefinic thermoplastic elastomer. For this reason, the flexibility of the vehicle outer side seal lip 21 and the vehicle inner side seal lip 31 can be improved, and even if the door glass 5 rises and enters the main body of the glass run 10, the door lip 21 is flexibly received. The followability with the glass 5 is good, and the sealing performance can be surely ensured even when the door glass 5 is sucked out in the vehicle direction during high-speed running or vibration.
Even in this case, it is preferable to provide a low sliding member layer on the surfaces of the vehicle outer seal lip 21 and the vehicle inner seal lip 31.

  A vehicle outer side wall ridge 24 can be formed on the inner surface of the vehicle outer side wall 20. Further, instead of forming the vehicle outer side wall protrusion 24 on the inner surface of the vehicle outer side wall 20, a low sliding member layer is formed, or a protrusion is formed on the back surface of the vehicle outer seal lip 21, The low sliding member may be extruded, applied, or affixed. In this case, even if the vehicle outer side seal lip 21 is in close contact with the vehicle outer side wall 20 by being pushed by the door glass 5, sticking between the vehicle outer side seal lip 21 and the vehicle outer side wall 20 can be prevented.

  The low sliding member is formed by applying a low sliding member such as urethane resin or a material having a low adhesive force and a low ratio of the olefin portion of the thermoplastic elastomer and a low sliding resistance. For this reason, when the door glass 5 slides in the glass run 10, the vehicle outer side wall 20 and the vehicle outer seal lip 21 are prevented from coming into close contact with each other, thereby preventing abnormal noise and preventing the glass run 10 from shifting. be able to.

  Similar to the first embodiment, the vehicle interior side wall auxiliary lip 34 is formed on the vehicle interior side wall 30 obliquely upward so as to contact the back surface of the vehicle interior seal lip 31. Therefore, when the door glass 5 moves up and down and slides on the glass run 10, the vehicle interior seal lip 31 can be pushed up so that the door glass 5 is positioned in the vehicle exterior direction. Adhesion between 31 and the vehicle interior side wall 30 can be prevented. Thereby, while preventing the vibration of the door glass 5, the level | step difference of the door glass 5 and the door frame 2 can be made small, and an abnormal noise and a wind noise can be prevented.

  In both the first embodiment and the second embodiment, the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40 are the vehicle outer side wall 20, and the vehicle outer side wall connecting portion between the vehicle inner side wall 30 and the bottom wall 40. 26, it is formed of a thermoplastic elastomer harder than the vehicle interior side wall connecting portion 36, but it can be formed of a hard synthetic resin such as polypropylene or polyethylene instead. By applying a hard synthetic resin in place of the hard thermoplastic elastomer, the wall thickness can be reduced as in the case of the hard thermoplastic elastomer, and the weight of the glass run 10 can be reduced. Moreover, the adhesiveness with a seal lip root part and a connection part is good, and recycling is easy.

It is sectional drawing of the state which mounted | wore the upper side part with the glass run which is the 1st Embodiment of this invention, and is sectional drawing along AA in FIG. It is sectional drawing of the state which mounted | wore the upper side part with the glass run which is the 2nd Embodiment of this invention, and is sectional drawing along BB in FIG. It is a front view of the glass run which is embodiment of this invention. It is a front view of a motor vehicle door. It is sectional drawing of the state which mounted | wore the upper side part with the conventional glass run. It is a perspective view of the state where other conventional glass runs were attached to the upper side.

Explanation of symbols

2 Door frame 10 Glass run 20 Car outer side wall 21 Car outer side seal lip 22 Car outer side seal lip root part 26 Car outer side wall joint part 30 Car inner side wall 31 Car inner side seal lip 32 Car inner side seal lip root part 36 Car inner side wall joint part 40 Bottom wall

Claims (9)

In the glass run that is attached to the inner periphery of the door frame of the automobile door and guides the raising and lowering of the door glass,
The main body of the glass run has a substantially U-shaped cross section composed of an outer side wall, an inner side wall, and a bottom wall, and the outer side wall and the inner side wall have a substantially U-shaped cross section of the main body, respectively. A vehicle outer side seal lip and a vehicle inner side seal lip extending toward the inside of the main body are provided, and the vehicle outer side surface and the vehicle inner side surface of the end portion of the door glass are sealed by the vehicle outer side and vehicle inner side seal lips,
The vehicle outer side seal lip root portion and the vehicle inner side seal lip root portion that are respectively continuous with the vehicle outer side wall and the vehicle inner side wall are formed of an olefin-based thermoplastic elastomer, and the vehicle outer side wall and the vehicle inner side wall are connected to the bottom wall. Each continuous connection is formed of an olefinic thermoplastic elastomer,
The vehicle outer side wall, the vehicle inner side wall, and the bottom wall, excluding the connecting portion, are thermoplastic such as a synthetic resin and a thermoplastic elastomer that are harder than the olefin-based thermoplastic elastomer forming the seal lip root portion and the connecting portion. An automotive glass run characterized by being made of a material.   The vehicle exterior seal lip and the vehicle interior seal lip are all formed of an olefin-based thermoplastic elastomer softer than a hard thermoplastic material forming the vehicle exterior side wall, the vehicle interior side wall, and the bottom wall. Glass run for automobiles.   The glass run for automobiles according to claim 1 or 2, wherein the olefinic thermoplastic elastomer and the thermoplastic elastomer are cross-linked olefinic thermoplastic elastomers (TPV).   The soft olefin-based thermoplastic elastomer that forms the seal lip root portion and the connection portion has an IRHD hardness of 60 ° to 90 °, and is harder than the olefin thermoplastic elastomer that forms the seal lip root portion and the connection portion. The automotive glass run according to any one of claims 1 to 3, wherein the thermoplastic elastomer has a Shore D hardness of 30 ° to 55 °.   The vehicle outer side wall and the vehicle inner side wall are each provided with a vehicle outer side cover lip and a vehicle inner side cover lip extending from the tip toward the outer side of the main body having a substantially U-shaped cross section of the main body. The glass run for automobiles according to any one of the above.   The automotive glass run according to claim 5, wherein the vehicle outer cover lip and the vehicle inner cover lip are formed of a soft olefin-based thermoplastic elastomer.   The glass run for automobiles according to any one of claims 1 to 6, wherein a protrusion or a low sliding member layer is formed on an inner surface of the outer side wall of the vehicle and an inner surface of the bottom wall.   8. The auxiliary lip that contacts the vehicle interior seal lip when the door glass enters the body of the glass run is formed on an inner surface of the vehicle interior side wall. Automotive glass run. The glass run for automobiles according to any one of claims 1 to 8, wherein a seal lip that contacts the door frame or the channel is formed on a bottom surface of the bottom wall.

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