JP2010173564A - Glass run for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run for automobile that is easy in manufacturing and prevents the generation of collision noise. <P>SOLUTION: The glass run 10 has straight line parts and corner parts. A glass run body of each of the straight line parts forms substantially a channel shape in cross section consisting of a vehicle outer sidewall 20, a vehicle inner sidewall 30, and a bottom wall 40. The bottom wall 40 is formed of a solid material, having a bottom wall center space 41, and formed divided into a vehicle outer bottom wall piece 42 and a vehicle inner bottom wall piece 43. The width of the bottom wall center space is formed to be less than the thickness of a door glass 5. A cushioning piece 44, formed of a sponge material, is formed on the inner surface and the outer surface of the bottom wall, integrally with the bottom wall. The cushioning piece 44 is constituted of: a bottom wall outer surface cushioning piece 45 formed on the outer surface of the bottom wall 40; a bottom wall inner surface cushioning piece 46 formed on the inner surface of the bottom wall; and a bottom wall connecting cushioning piece 47, filled in the bottom wall center space, connecting the bottom wall inner surface cushioning piece 46 and the bottom wall outer surface cushioning piece 45. <P>COPYRIGHT: (C)2010,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 a cross-sectional view of the conventional glass run 110 attached to the straight portion of the door frame 2 is shown in FIG.

  Conventionally, as shown in FIG. 5, the glass run 110 is attached in the channel 103 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 portion 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 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 main body section 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.

  The vehicle outer side wall 120, the vehicle inner side wall 130 and the bottom wall 140 of the main body of the glass run 110 are inserted into a channel 103 provided in the door frame 2, and at least a part of the outer surface of each wall is pressed against the inner surface of the channel 103. The glass run 110 is held. As shown in FIG. 5, the channel 103 may be formed by fitting the channel 103 formed of a separate member or by bending the door frame 2.

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. (See, for example, Patent Document 1).
In addition, when the glass run 110 is mounted in the channel 103, the straight side portion of the glass run 110 is held on the vehicle inner side wall 130 and the vehicle outer side wall 120 in order to lock and hold the glass run 110 in the channel 103. A vehicle interior holding lip 134 and a vehicle exterior projection 124 are provided.

When the glass run 110 is mounted in the channel 103, the door glass 5 rises, and the front end of the door glass 5 collides with the bottom wall 140, the door frame 2 vibrates and a collision sound is generated.
In order to reduce the impact noise, as shown in FIG. 6, the vehicle outer side wall 220, the vehicle inner side wall 230, and the bottom wall 240, which are the main body portions of the glass run 210, are all formed of a sponge material (for example, , See Patent Document 2). However, since the entire main body portion 22 is made of a sponge material, it does not have sufficient rigidity, does not sufficiently absorb the impact at the tip of the door glass 5, and cannot prevent a collision sound.

  Further, as shown in FIG. 7, a buffer portion 341 having a U-shaped cross section is formed from the inner surface of the bottom wall 340 of the glass run 310 and engaged with the vehicle outer side wall 320, and the tip of the door glass 5 is brought into contact with the buffer portion 341. (For example, refer to Patent Document 3). However, the shape of the buffer portion 341 is complicated, the extrusion molding is complicated, and it takes time to assemble the buffer portion 341, and the collision noise between the buffer portion 341 and the bottom wall 340 cannot be prevented.

  Furthermore, as shown in FIG. 8, there is a glass run 410 in which a buffer member 441 having adhesiveness is attached to the bottom wall 440 (see, for example, Patent Document 4). However, it takes time and effort to stick the adhesive cushioning member 441 to the bottom wall 440, and when the door glass 5 is closed, there is little room for the bottom wall 440 to bend, and the tip of the door glass 5 is attached to the bottom wall 440. There was a problem that the door frame 2 vibrates and a collision sound is generated due to the collision.

JP 2000-280749 A JP 2004-196033 A JP-A-8-310243 Japanese Patent Laid-Open No. 9-39580

  Accordingly, an object of the present invention is to provide a glass run that is easy to produce a glass run and prevents the occurrence of a collision sound of a door glass.

In order to solve the above-mentioned problems, the present invention of claim 1 is an automotive 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, and the glass run is formed by extrusion molding. A straight part attached to the upper side part and the vertical side part of the door frame, a straight part formed by molding and connecting the straight part, and having a corner part attached to the corner part of the door frame,
The main body portion of the straight 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. The vehicle exterior seal lip and the vehicle interior seal lip that extend toward the inside of the main body are provided, and the vehicle exterior surface and vehicle interior side surface at the end of the door glass are sealed by the vehicle exterior seal lip and the vehicle interior seal lip. In the glass run,
The bottom wall is formed of a solid material, has a bottom wall central space portion at the center, and is divided into a vehicle outer bottom wall piece and a vehicle inner bottom wall piece, and the width of the bottom wall central space portion is a door glass. Formed smaller than the thickness of
A buffer piece made of sponge material is formed integrally with the bottom wall on the inner surface and the outer surface of the bottom wall, and the buffer piece is formed on the outer surface of the bottom wall formed on the outer surface of the bottom wall and on the inner surface of the bottom wall. An automotive glass comprising: a bottom wall inner buffer piece to be formed; and a bottom wall inner buffer piece and a bottom wall connecting buffer piece connected to the bottom wall central space by connecting the bottom wall inner buffer piece and the bottom wall outer buffer piece. It is a run.

  In the first aspect of the present invention, the glass run is formed by extrusion molding and is connected to the upper side portion and the vertical side portion of the door frame, and the straight portion is formed by molding to connect the corner portion of the door frame. The body part of the straight 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 is provided on the vehicle outer side wall and the vehicle inner side wall. Are provided with an outside seal lip and an inside seal lip extending toward the inside of the main body having a substantially U-shaped cross section, and the end of the door glass is formed by the outside seal lip and the inside seal lip. The vehicle outer surface and the vehicle inner surface are sealed.

  For this reason, when the door is closed, the door glass is placed on the inner side of the substantially U-shaped glass run of the body portion including the vehicle outer side wall, the vehicle inner side wall, and the bottom wall at the upper side and the vertical side of the door frame. The tip can be stored and the door glass can be securely held. In addition, at the upper side and the vertical side of the straight portion, both the seal lip and the vehicle interior seal lip are brought into contact with the door glass by the vehicle exterior seal lip and the vehicle interior seal lip as the door glass moves up and down. The seal lip can provide a seal between the door frame and the door glass.

  The bottom wall is formed of a solid material, has a bottom wall central space portion at the center, and is divided into a vehicle outer bottom wall piece and a vehicle inner bottom wall piece, and the width of the bottom wall central space portion is a door glass. It is formed smaller than the thickness. For this reason, when the front end of the door glass comes into contact with the buffer piece, the rigid bottom wall holds the buffer piece, and the front end of the door glass also has the bottom wall piece on the outside wall and the bottom wall piece on the inside side of the car. It can hold | maintain at a front-end | tip part, and it can prevent that the front-end | tip of a door glass presses a buffer piece suddenly and collides with a door frame, without pressing only a buffer piece.

  A buffer piece made of sponge material is formed integrally with the bottom wall on the inner and outer surfaces of the bottom wall, so that the glass run and the buffer piece can be extruded at the same time, and the front end of the door glass is buffered. Even if it abuts on the piece, the bottom wall and the buffer piece do not shift. Further, the buffer piece can hold the vehicle outer bottom wall piece and the vehicle inner bottom wall piece of the bottom wall and maintain the distance therebetween, so that the glass run can be maintained in a substantially U-shaped cross section.

  The buffer piece includes a bottom wall outer surface buffer piece formed on the outer surface of the bottom wall, a bottom wall inner buffer piece formed on the inner surface of the bottom wall, and a bottom wall inner buffer piece and a bottom wall outer buffer piece connected to each other. It is comprised from the bottom wall connection buffer piece with which a center space part is filled. For this reason, the buffer piece is in intimate contact with the bottom wall, and the bottom wall connection buffer piece portion, which is the portion where the tip of the door glass abuts at the center portion of the buffer piece, is formed only with sponge material, The impact can be absorbed and the generation of vibration noise can be prevented.

  According to the second aspect of the present invention, a bottom wall outer surface cushioning lip that contacts the inner circumferential surface of the door frame is formed on both side ends of the bottom wall outer surface cushioning piece, and the inner circumferential surface of the door frame, the bottom wall outer surface cushioning piece, It is a glass run for automobiles in which a space is formed between the two.

  According to the second aspect of the present invention, the bottom wall outer surface cushioning lip that contacts the inner circumferential surface of the door frame is formed on both side ends of the bottom wall outer surface cushioning piece, and the inner peripheral surface of the door frame and the bottom wall outer surface cushioning piece are A space is formed between the two. For this reason, when the front end of the door glass comes into contact with the bottom wall inner surface buffer piece, the entire buffer piece can be bent in the above space, and the impact of the door glass collision can be further absorbed. Generation of vibration noise can be prevented.

  According to a third aspect of the present invention, there is provided a glass run for an automobile in which a bottom wall outer surface buffer piece and a bottom wall outer surface buffer lip protruding from the vehicle inner bottom wall piece are formed at positions adjacent to both ends of the bottom wall outer surface buffer piece. .

  According to the third aspect of the present invention, the vehicle outer bottom wall piece and the bottom wall outer surface buffer lip projecting from the vehicle inner bottom wall piece are formed at positions adjacent to both ends of the bottom wall outer surface buffer piece. When abutting against the bottom wall inner surface cushioning piece, the rigidity of the bottom wall outer surface cushioning lip is large, and a space is secured between the inner peripheral surface of the door frame and the outer wall cushioning piece on the bottom wall, so that the amount of deflection of the cushioning piece is reduced. It can be ensured and the impact of the collision of the door glass can be further absorbed, and the generation of vibration noise can be prevented.

  The present invention of claim 4 is the glass run for automobiles in which the buffer piece and the bottom wall are heat-sealed at the time of extrusion molding.

  In the present invention of claim 4, since the buffer piece and the bottom wall are heat-sealed at the time of extrusion molding, the buffer piece and the bottom wall are firmly fused and do not peel for a long period of time. When the front end abuts against the bottom wall inner surface buffer piece, the impact of the door glass collision can be further absorbed without causing the bottom wall and the buffer piece to shift, and the generation of vibration noise can be prevented. Further, the buffer piece and the bottom wall can be simultaneously formed by extrusion molding, and the manufacture is easy.

  According to a fifth aspect of the present invention, the vehicle outer bottom wall piece, the vehicle inner bottom wall piece, the bottom wall inner surface buffer piece, and the bottom wall outer surface buffer piece are automotive glass runs having substantially the same thickness.

  In the present invention of claim 5, since the vehicle outer bottom wall piece and the vehicle inner bottom wall piece and the bottom wall inner surface buffer piece and the bottom wall outer surface buffer piece have substantially the same thickness, while maintaining the strength of the bottom wall, When the front end of the door glass comes into contact with the bottom wall inner surface buffer piece, the impact of the door glass collision can be effectively absorbed, and the generation of vibration noise can be prevented.

  In the present invention, the bottom wall is formed of a solid material, has a bottom wall central space portion at the center, is divided into an outer bottom wall piece and an inner bottom wall piece, and has a width of the bottom wall central space portion. Since the door glass is formed smaller than the thickness of the door glass, the bottom wall having high rigidity holds the buffer piece and can prevent the front end of the door glass from colliding with the door frame.

Since the buffer piece formed of sponge material is formed integrally with the bottom wall on the inner surface and the outer surface of the bottom wall, maintaining the distance between the vehicle outer bottom wall piece and the vehicle inner bottom wall piece of the bottom wall, The glass run can maintain a substantially U-shaped cross section.
Since the buffer piece is composed of the bottom wall outer surface buffer piece, the bottom wall inner surface buffer piece, and the bottom wall coupling buffer piece, the buffer piece is in close contact with the bottom wall and is the portion where the tip of the door glass abuts. The bottom wall coupling buffer piece portion is formed only of a sponge material, so that the impact of the door glass collision can be absorbed and the generation of vibration noise can be prevented.

It is sectional drawing of the state which mounted | wore the upper side part with the glass run which is embodiment of this invention, and is sectional drawing along AA in FIG. It is an expanded sectional view of the part of the bottom wall of the glass run which is embodiment of this invention. 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 sectional drawing of the other conventional glass run. It is sectional drawing of the other conventional glass run. It is sectional drawing of the other conventional glass run.

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 of the door 1 on the front side will be described as an example.
FIG. 1 is a cross-sectional view of the upper side of the rear side of the glass run 10 taken along line AA in FIG. 4. FIG. 2 shows that a buffer piece 44 is integrally formed on the bottom wall 40 of the glass run 10. FIG.

As shown in FIG. 1, the cross-sectional shape of the straight portion 11 of the glass run 10 attached to the upper side portion of the door frame 2 is substantially the same in cross section 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 larger than the vehicle exterior side wall 20 and is thick, and the substantially U-shaped cross section is formed in an asymmetric shape with a large vehicle interior.
The main body portion of the glass run 10 basically has substantially the same cross-sectional shape with a substantially U-shaped cross section, both of the portion attached to the upper side portion of the door frame 2 and the portion attached to the vertical side portion described later.

  The bottom wall 40 is formed of a solid material like the vehicle outer side wall 20 and the vehicle inner side wall 30, is formed in a substantially plate shape, has a bottom wall central space portion 41 at the center, and has a vehicle outer bottom wall piece 42 and The vehicle inner bottom wall piece 43 is divided and formed. The vehicle outer bottom wall piece 42 and the vehicle inner bottom wall piece 43 are integrally formed continuously with the vehicle outer side wall 20 and the vehicle inner side wall 30, respectively. For this reason, when the front end of the door glass 5 abuts against the buffer piece 44, the rigid bottom wall 40 holds the buffer piece 44, and the front end of the door glass 5 has the vehicle outer bottom wall piece 42 and the vehicle inner bottom. It is held by the wall piece 43, and the tip of the door glass 5 can be prevented from suddenly pressing the buffer piece 44 and colliding with the door frame 2 without deforming only the buffer piece 44.

  The width of the bottom wall central space 41, that is, the distance between the vehicle outer bottom wall piece 42 and the vehicle inner bottom wall piece 43 (D 2 in FIG. 2) is formed smaller than the thickness of the door glass 5. For this reason, when the front end of the door glass 5 comes into contact with the buffer piece 44, the rigid bottom wall 40 holds the buffer piece 44, and the front end of the door glass 5 is the bottom wall coupling buffer piece 47 of the buffer piece 44. It can prevent entering the inside of a part, can press the buffer piece 44 rapidly, and can prevent colliding with the door frame 2. FIG.

A buffer piece 44 made of a sponge material is formed integrally with the bottom wall 40 on the inner surface and the outer surface of the bottom wall 40.
The buffer piece 44 is formed in a substantially H-shaped cross section, and is formed on a bottom wall outer surface buffer piece 45 formed on a surface facing the door outer panel 2 c of the door frame 2, which is an outer surface of the bottom wall 40, and an inner surface of the bottom wall 40. The bottom wall inner surface buffer piece 46 formed on the inner surface of the main body of the glass run 10 having a substantially U-shaped cross section, and the bottom wall inner surface buffer piece 46 and the bottom wall outer surface buffer piece 45 are connected to each other. 41 is composed of a bottom wall coupling buffer piece 47 filled in 41.

  The bottom wall outer surface buffer piece 45 is on the outer surface of the bottom wall 40, the bottom wall inner surface buffer piece 46 is on the inner surface of the bottom wall 40, and the bottom wall connection buffer piece 47 is on the side wall of the bottom wall central space 41. It is formed by fusing. This is because the glass run 10 and the buffer piece 44 are formed by extrusion at the same time. For this reason, even if the front end of the door glass 5 abuts against the buffer piece 44, the bottom wall 40 and the buffer piece 44 do not shift. Further, the distance between the vehicle outer bottom wall piece 42 and the vehicle inner bottom wall piece 43 of the bottom wall 40 is maintained by the bottom wall coupling buffer piece 47 so that the width of the bottom wall 40 does not widen, and the glass run 10 has a substantially cross-sectional view. The U shape can be maintained.

  As shown in FIG. 2, since the width (D2) of the bottom wall central space 41 is formed smaller than the thickness of the door glass 5, the door glass 5 rises in the central portion of the buffer piece 44, The center portion of the bottom wall inner surface buffer piece 46, the bottom wall connecting buffer piece 47, and the central portion of the bottom wall outer surface buffer piece 45, which are the portions where the front end of the door glass 5 is in contact with the glass run 10, are made of only a sponge material. By forming, the impact of the collision of the door glass 5 can be absorbed, and the generation of vibration noise can be prevented. The width (D 1) and the width (D 3) on the vehicle outer side of the bottom wall inner surface buffer piece 46 are preferably formed to cover the vehicle outer bottom wall piece 42 and the vehicle inner bottom wall piece 43.

  As shown in FIG. 2, the thickness (F2) of the vehicle outer bottom wall piece 42, the thickness (F2) of the vehicle inner bottom wall piece 43, the thickness (F1) of the bottom wall inner surface buffer piece 46, and the bottom wall outer surface buffer. The thickness (F3) of the piece 45 is preferably formed to be substantially the same thickness. In this case, the thickness of the vehicle outer bottom wall piece 42 and the vehicle inner bottom wall piece 43 of the bottom wall 40 is secured, the strength is maintained, and the front end of the door glass 5 abuts against the bottom wall inner surface buffer piece 46. In some cases, the bottom wall inner surface buffer piece 46 and the bottom wall outer surface buffer piece 45 can effectively absorb the impact of the collision of the door glass 5, and the combined thickness of the bottom wall 40 and the buffer piece 44. The thickness is not too large and can be easily mounted on the door frame 2. The thicknesses of F1, F2 and F3 are each preferably about 1 mm.

  It is preferable to form bottom wall outer surface buffering lips 48, 48 in contact with the inner peripheral surface of the door outer panel 2 c of the door frame 2, at both side ends of the bottom wall outer surface buffering piece 45. In this case, a space is formed between the inner peripheral surface of the door outer panel 2 c and the bottom wall outer surface cushioning piece 45. For this reason, when the front-end | tip of the door glass 5 contact | abuts to the bottom wall inner surface buffer piece 46, the whole buffer piece 44 can bend in this space, and absorbs the impact of the collision of the door glass 5 much more. This can prevent the generation of vibration noise.

  Moreover, it is preferable to form the bottom wall outer surface buffer lips 48, 48 from a solid material. In this case, when the front end of the door glass 5 abuts against the bottom wall inner surface buffer piece 46, the bottom wall outer surface buffer lips 48, 48 have high rigidity and little deformation, so that the inner peripheral surface of the door outer panel 2c The space between the bottom wall outer surface cushioning piece 45 is secured, the deflection amount of the cushioning piece 44 is secured, the impact of the collision of the door glass 5 can be further absorbed, and the generation of vibration noise is prevented. it can.

As shown in FIG. 1, 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 portion 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 front end of the door molding 7.

A portion having a substantially U-shaped cross section is formed by the door molding 7 and the distal end of the door outer panel 2c of the door frame 2, and the glass run 10 is held therein.
One end of the door molding 7 is attached to the tip of the door frame 2 with a screw 4 b or the like, and the other end constitutes a molding that covers the tip of the door frame 2. Moreover, since the vehicle outer side wall 20 is formed smaller than the vehicle inner side wall 30 described later, the vehicle outer side area of the door molding 7 can be reduced, which is preferable in terms of design.

  A side surface of the end portion 7b of the door molding 7 that is bent inwardly into a hairpin shape comes into contact with the outer side surface of the vehicle outer side wall 20. A vehicle outer protrusion 24 is formed on the bottom wall 40 side of the outer surface of the vehicle outer side wall 20. The front end 7 b of the door molding 7 is locked to the vehicle outer protrusion 24, and the front end 7 b is sandwiched between the vehicle outer cover lip 23.

As described above, the vehicle outer side seal lip 21 extends obliquely toward the inner side of the main body of the glass run 10 inside the vehicle outer side wall 20.
When the door glass 5 rises and the upper end of the door glass 5 enters the inside of the upper side of the main body of the glass run 10, this vehicle outer seal is provided on both the inner side and the outer side of the upper end of the door glass 5. The lip 21 and a vehicle interior seal lip 31 described later elastically contact each other to seal between the front end of the door glass 5 and the door frame 2.

  The vehicle exterior seal lip low sliding member layer 21 b may be formed on the surface of the vehicle exterior seal lip 21 that contacts the door glass 5, that is, the surface on the opening side of the main body of the glass run 10. The vehicle exterior seal lip low sliding member layer 21b can be formed by applying urethane resin, silicone resin, or the like.

  For this reason, when the door glass 5 moves up and down and slides on the glass run 10 at the vertical side, the friction between the door glass 5 and the glass run 10 is reduced, and the sliding resistance can be reduced. Generation of sound can be prevented and smooth elevation can be ensured. Further, even when the door glass 5 moves up and down due to the bending of the door glass 5 and the negative pressure during traveling, or even when the door glass 5 is bent and strongly pressed against the outer seal lip 21, the door glass 5 is slid. Smooth elevation can be ensured without increasing the dynamic resistance.

The vehicle interior side wall 30 is formed thicker and larger than the vehicle exterior side wall 20. For this reason, the glass run 10 can be firmly held on the door frame 2 together with the door molding 7.
Since the vehicle interior side wall 30 is larger than the vehicle exterior side wall 20 and is formed thick, the door glass 5 can be securely held and the door glass 5 can be positioned in the vehicle exterior direction. 2 can be reduced, the wind noise can be reduced, and the appearance can be improved.

  On the outer surface of the vehicle interior side wall 30, a vehicle interior projection 33 is formed on the front end side, and a vehicle interior holding lip 34 is formed in the vicinity of the continuous portion with the bottom wall 40. The door outer panel 2c of the door frame 2 is formed with two recesses 2d and 2f bent, and the vehicle interior protrusion 33 and the vehicle interior holding lip 34 are engaged with the recesses 2d and 2f, respectively. For this reason, the glass run 10 can be hold | maintained at the door frame 2 with the above-mentioned door molding 7 and recessed part 2d, 2f.

  A vehicle interior cover lip 32 extends obliquely upward from the front end of the vehicle interior side wall 30. The vehicle interior cover lip 32 is formed so as to cover the vehicle interior bent portion of the door outer panel 2 c of the door frame 2 and the tip of the garnish 50 attached to the vehicle interior of the door frame 2. Thereby, the gap between the door outer panel 2c and the garnish 50 and the door glass 5 can be closed, and the appearance can be improved.

  Similar to the vehicle outer side wall 20, a vehicle inner seal lip 31 extends obliquely from the front end of the vehicle inner side wall 30 toward the inside of the main body of the glass run 10. Since the vehicle interior seal lip 31 is longer and thicker than the vehicle exterior seal lip 21, the door glass 5 can be positioned on the vehicle exterior side when the door glass 5 enters the glass run 10. The step difference between the door frame 2 and the door glass 5 can be reduced. For this reason, air resistance and wind noise are reduced, which is preferable in terms of design. A low sliding member layer 31 b is formed on the surface of the vehicle interior seal lip 31. Thereby, sliding resistance between the door glass 5 and the vehicle interior seal lip 31 can be reduced.

In the molding of the main body portion of the straight portion 11 of the glass run 10, a synthetic rubber or a thermoplastic elastomer solid material is used as the molding material, EPDM rubber is used as the synthetic rubber, and polyolefin elastomer is used as the thermoplastic elastomer. Etc. are used. The main body and the buffer piece 44 are molded by coextrusion molding, and then vulcanized in the case of synthetic rubber.
For the buffer piece 44, a synthetic rubber or a thermoplastic elastomer sponge material is used, and similarly, an olefin-based EPDM rubber or a polyolefin-based elastomer is used.

  The corner portion 12 of the glass run 10 is also formed of an olefin-based thermoplastic elastomer after the straight portion 11 is formed and then cut into a predetermined dimension. It is the same kind of material and has good adhesion between the straight portion 11 and the corner portion 12 of the glass run 10. In addition, both are olefin-based materials, have good weather resistance, can be pulverized at the same time, and can be easily recycled.

DESCRIPTION OF SYMBOLS 2 Door frame 10 Glass run 11 Straight part 12 Corner part 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 41 Bottom wall center space part 42 Car outer bottom wall piece 43 Car inner bottom wall Piece 44 Buffer piece 45 Bottom wall outer buffer piece 46 Bottom wall inner buffer piece 47 Bottom wall connection buffer piece

Claims (5)

An automotive 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 glass run is formed by extrusion molding and is mounted on the upper side and the vertical side of the door frame. A straight portion and a corner portion formed by molding and connecting the straight portion, and attached to the corner portion of the door frame;
The main body portion of the glass run of the straight portion has a substantially U-shaped cross section including an outer side wall, an inner side wall, and a bottom wall, and the outer side wall and the inner side wall are respectively provided with the main body portion. A vehicle outer side seal lip and a vehicle inner side seal lip extending toward the inside of the main body having a substantially U-shaped cross section are provided, and the vehicle outer side surface and the vehicle inner side of the end portion of the door glass are formed by the vehicle outer side seal lip and the vehicle inner side seal lip. In automotive glass runs that seal the sides,
The bottom wall is formed of a solid material, has a bottom wall central space portion at the center, is divided into a vehicle outer bottom wall piece and a vehicle inner bottom wall piece, and the width of the bottom wall central space portion is Formed smaller than the thickness of the door glass,
A buffer piece formed of a sponge material is formed integrally with the bottom wall on the inner surface and the outer surface of the bottom wall, and the buffer piece includes a bottom wall outer surface buffer piece formed on the outer surface of the bottom wall, and A bottom wall inner buffer piece formed on the inner surface of the bottom wall, and a bottom wall coupling buffer piece that connects the bottom wall inner buffer piece and the bottom wall outer buffer piece and fills the bottom wall central space portion. A glass run for automobiles.   A bottom wall outer surface buffering lip that abuts against an inner peripheral surface of the door frame is formed on both side ends of the bottom wall outer surface buffering piece, and a space is provided between the inner peripheral surface of the door frame and the bottom wall outer surface buffering piece. The glass run for automobiles according to claim 1, wherein is formed.   The glass run for automobiles according to claim 1, wherein a bottom wall outer surface buffer piece and a bottom wall outer surface buffer lip projecting from the vehicle inner bottom wall piece are formed at positions adjacent to both ends of the bottom wall outer surface buffer piece.   The automotive glass run according to any one of claims 1 to 3, wherein the buffer piece and the bottom wall are heat-sealed at the time of extrusion molding.   The vehicle outer bottom wall piece and the vehicle inner bottom wall piece, and the bottom wall inner surface buffer piece and the bottom wall outer surface buffer piece have substantially the same thickness. Glass run.

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