JP4688587B2 - Automotive glass run - Google Patents

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. 7, 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 corner 112 of the conventional glass run 110 is shown in FIG. FIG. 8 is a perspective view of the corner portion 112 of the glass run 110 attached to a portion corresponding to the corner portion 2b of the door frame 2 formed by the upper side portion of the door frame 2 and the front side vertical side portion.

Conventionally, as shown in FIG. 7, the glass run 110 is attached 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. . Further, as shown in FIG. 6, 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. 8, the main body of the glass run 110 has a substantially U-shaped cross section including an outer side wall 120, an inner side wall 130, and a bottom wall 140, as shown in FIG. 8. Yes. 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.
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 the channel 3 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 3. The glass run 110 is held.

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 of the end portion of the door glass 5 are held by the vehicle exterior seal lip 121 and the vehicle interior seal lip 131. Are sealed.
Further, when the glass run 110 is mounted in the channel 3, in order to lock and hold the glass run 110 in the channel 3, in the straight portion of the glass run 110, the vehicle inner side wall 130 and the vehicle outer side wall 120 are connected to each other. A vehicle inner side holding lip 124 and a vehicle outer side holding lip 134 are respectively provided.

  At this time, the corner portion 112 of the glass run 110 is formed by molding, and is formed at an angle along the angle of the corner portion 2 b of the door frame 2. However, when the glass run 110 is attached to the door frame 2, the door frame 2 and the glass run 110 are not formed in the corner portion 112 due to variations in the dimensions of the glass run 110 and the door frame 2, a shift of the glass run 110, or the like. There will be a gap between the two. For this reason, sealing performance deteriorates, and rainwater and noise may enter the vehicle.

Therefore, there is a type in which a caulking sponge 160 is attached to the outer surface of the bottom wall 140 at the corner portion 112 of the glass run 110 to fill the gap (for example, see Patent Document 1).
However, since the corner portion 2b of the door frame 2 is formed by connecting linear sashes, the triangular corner portion of the connected portion becomes an angular and sharp corner, and the corner portion 112 of the glass run 110 is mounted. Then, since the outer surface covering the top of the caulking sponge 160 is rounded, a gap is formed between the door frame 2 and the glass run 110 at the corner 2a of the door frame 2 and the top of the glass run 110. It will be. For this reason, sealing performance deteriorates, and rainwater and noise may enter the vehicle.

For this reason, as shown in FIG. 9, there is a case in which a second caulking sponge 161 shorter than the caulking sponge 160 is attached to a portion corresponding to the corner of the door frame 2 of the caulking sponge 160 (see, for example, Patent Document 2). .)
However, when the second caulking sponge 161 is pasted, if the second caulking sponge 161 is pasted short, it is necessary to paste the position corresponding to the corner of the door frame 2 accurately. It takes a lot of work, and it is necessary to prevent the mounting work from deviating from the corners. When the second caulking sponge 161 is adhered for a long time, the second caulking sponge 161 abuts widely at the front and rear of the corners and does not enter the sharp corners of the triangle. Therefore, the sealing property was insufficient.
JP-A-6-135240 Japanese Utility Model Publication No. 4-29420

  Accordingly, an object of the present invention is to provide a glass run that is easy to manufacture and has excellent sealing properties and sound insulation properties at corner portions.

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. In a glass run for an automobile having a straight line portion attached to the upper side portion and the vertical side portion of the door frame and a straight portion formed by molding and having a corner portion attached to the corner portion of the door frame, The body of the straight part and the corner part has a substantially U-shaped cross section consisting of an outer side wall, an inner side wall, and a bottom wall, and a convex part is formed on the outer surface of the corner of the corner wall where the corner wall is bent. The bottom wall convex portion is formed by forming the inner surface of the top portion of the bottom wall into a concave portion, forming the outer surface of the top portion as a convex portion, forming the top portion with substantially the same thickness as the other portions of the bottom wall, and covering the convex portion. In addition, caulking material is attached to the outer surface of the bottom wall. It was an automotive glass run.

  In the first aspect of the present invention, the main body of the straight portion and the corner portion of the glass run has a substantially U-shaped cross section including an outer side wall, an inner side wall, and a bottom wall. For this reason, when the door is closed, a glass run having a substantially U-shaped cross section of the body consisting of the vehicle outer side wall, the vehicle inner side wall, and the bottom wall at the upper side, the vertical side, and the corner as the straight part of the door frame. The front end of the door glass can be stored inside, and the door glass can be securely held.

A convex portion is formed on the outer surface of the top of the corner where the bottom wall of the corner portion is bent, and the caulking material is mounted on the outer surface of the bottom wall while covering the convex portion. For this reason, the caulking material can be filled in the gap generated between the corner of the corner of the glass run and the corner of the door frame. Furthermore, the convex part formed on the outer surface of the top part of the bottom wall can press the caulking material against the part generated at the triangular corner of the corner part of the door frame to which the linear door frame is connected. Can be completely filled with caulking material.
Moreover, since the convex portion is formed on the outer surface of the corner portion of the bottom wall, the caulking material can be protruded toward the corner portion of the door frame without forming the convex portion on the caulking material, and the sealing performance is improved. Can be improved.

In the present invention of claim 1, the inner surface of the top of the bottom wall is formed as a recess, the outer surface of the top is formed as a protrusion, and the top is formed with substantially the same thickness as the other parts of the bottom wall. There is no occurrence of sink marks or the like during molding, and the caulking material can be reliably pushed to the top of the door frame. Furthermore, since the inner surface of the top portion of the bottom wall is formed as a recess, the flexibility of the corner portion of the glass run is improved, and the door frame can be easily attached to the corner portion.

The present invention of claim 2 is an automotive glass run in which the caulking material is a sponge material.

In the present invention of claim 2 , since the caulking material is a sponge material, the caulking material is flexible and can be filled according to the shape of the top of the door frame, so that the gap can be reliably filled and the sealing performance can be improved. . Since it is a sponge material, it can be easily compressed, can be deformed according to the gap between the door frame and the glass run, can be filled, and can effectively absorb noise and noise.

According to the third aspect of the present invention, a vehicle outer side seal lip and a vehicle inner side seal lip are provided on the vehicle outer side wall and the vehicle inner side wall, respectively. An automotive glass run that seals the vehicle outer side surface and the vehicle inner side surface of both end portions of a door glass with a seal lip and a vehicle inner side seal lip.

In this invention of Claim 3, the front-end | tip of a door glass can be accommodated in the inner side of the vehicle outer side wall and vehicle inner side wall of a glass run, and a door glass can be hold | maintained reliably. Also, as the door glass moves up and down, both the seal lips abut against the door glass by the vehicle outer side seal lip and the vehicle inner side seal lip, and the vehicle outer side seal lip and the vehicle inner side seal lip provide a space between the door frame and the door glass. Can be sealed.
Further, since both the straight portion and the corner portion of the glass run have the vehicle outer side seal lip and the vehicle inner side seal lip, the sealing performance between the door glass and the corner portion can be ensured.

According to the fourth aspect of the present invention, the corner portion of the glass run has a convex portion on the outer surface of the top portion of the bottom wall, both of the corner portions mounted on both the front and rear corner portions of the door frame. It is a glass run for automobiles that is formed, covers the convex portions, and has a caulking material attached to the outer surface of the bottom wall.

According to the fourth aspect of the present invention, the corner portion of the glass run has a convex portion on the outer surface of the top portion of the bottom wall, both of the corner portions mounted on both the front side and rear side corner portions of the door frame. A caulking material is formed on the outer surface of the bottom wall while covering the convex portion. For this reason, the clearance gap between the corner part of both the front side and rear side of a door frame and the corner part of a glass run can be sealed reliably.
Since the caulking material is attached to both corner portions, there is no gap, and the glass run does not slip due to the raising and lowering of the door glass, and can be stably sealed.

According to the fifth aspect of the present invention, the straight line portion of the glass run is formed of an EPDM rubber or an olefinic thermoplastic elastomer, and the corner portion of the glass run is an automotive glass run formed of an olefinic thermoplastic elastomer.

In the present invention of claim 5 , 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.

In the present invention, the convex portion is formed on the outer surface of the top portion of the bottom wall of the corner portion of the glass run, and the caulking material is attached to the outer surface of the bottom wall to cover the convex portion. The gap formed between the top and the corner of the door frame can be filled with caulking material, and the convex portion formed on the outer surface of the corner of the bottom wall completely covers the caulking material, and the triangular corner of the corner is completely Can be filled.
Since the inner surface of the top of the bottom wall is formed as a recess, the outer surface of the top is formed as a protrusion, and the top is formed to have approximately the same thickness as the other parts of the bottom wall, depressions such as sink marks occur at the top of the bottom wall during molding. There is nothing, and the caulking material can be reliably pushed onto the top of the door frame. Furthermore, since the inner surface of the top portion of the bottom wall is formed as a recess, the flexibility of the corner portion of the glass run is improved, and the door frame can be easily attached to the corner portion.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a front view of the front door 1 of the automobile, and FIG. 6 is a front view of the glass run 10 for the front door attached to the door frame 2 of the door 1. As shown in FIG. 7, 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.

As shown in FIG. 6, the glass run 10 is attached to the straight portion 11 formed by extrusion molding as a whole and the corner portion of the door frame 2, and is formed by molding by connecting the straight portion 11 described above. It consists of a corner portion 12.
The straight portion 11 is attached to a division sash that forms a portion attached to the upper side portion 2g of the door frame 2, a portion attached to the rear side vertical side portion 2e of the door frame 2, and a front side vertical side portion 2f of the door frame 2. And 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 12 of the glass run 10 forms an angle or the like of the corner 12 so as to be attached to each of the front 2 and rear 2 corners of the door frame 2.

Hereinafter, the present invention will be described taking the corner portion 12 of the glass run 10 attached to the rear-side corner portion 2b formed by the rear-side vertical side portion 2e and the upper side portion 2g of the front door 1 as an example.
FIG. 1 is a cross-sectional view of a reference example of the present invention at a corner portion 12 of a glass run 10, and is a cross-sectional view taken along the line CC in FIG. FIG. 2 is a cross-sectional view of the embodiment of the present invention , and is a cross-sectional view taken along the line CC in FIG. 3 is a perspective view of the corner portion 12 on the rear side of the glass run 10, and FIG. 4 is a cross-sectional view of the glass run 10 mounted on the corner portion 2 b of the door frame 2. It is sectional drawing along the -A line. FIG. 5 is a cross-sectional view taken along line B-B in FIG. 7, similarly showing a state where the door frame 2 is mounted on the upper side 2 g.

First, based on FIGS. 1-4, the corner part 12 of the rear side of the glass run 10 is demonstrated about the reference example and embodiment of this invention.
The corner portion 12 of the glass run 10 is formed by connecting the extrusion linear portion 11 forming the upper side portion and the extrusion linear portion 11 forming the rear side vertical portion by molding. The shape of the straight part 11 will be described later. As shown in FIG. 4, the cross-sectional shape of the corner portion 12 is substantially the same as the cross-sectional shape of the linear portion 11 of the extrusion molding described later. That is, the main body 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. Connection is made by continuously changing the difference in cross-sectional shape of each straight line portion 11 between the upper side portion and the vertical side portion on the rear side at the corner portion 12.

  Further, as shown in FIG. 4, in accordance with the cross-sectional shape of the upper side portion and the vertical side portion on the rear side, the vehicle outer side seal lip 21 extends from the vicinity of the front end of the vehicle outer side wall 20 to the inside of the main body in a substantially U-shaped cross section. It is extended toward. Further, a vehicle outer side auxiliary seal lip 22 extends obliquely from the vicinity of the front end of the vehicle outer side wall 20 toward the outside from the entrance of the main body. Further, the vehicle outer side cover lip 23 is extended in the vehicle outer direction at the tip of the vehicle outer side wall 20. The vehicle exterior side seal lip 21 and the vehicle exterior auxiliary seal lip 22 can double seal the vehicle exterior surface of the door glass 5, improving the sealing performance at the corner portion 12.

A vehicle interior seal lip 31 extends from the front end of the vehicle interior side wall 30 toward the inside of the main body in a substantially U-shaped cross section, and a vehicle interior cover lip 33 extends in the direction in which the vehicle interior side wall 30 extends. The door glass 5 extends in parallel with the raising / lowering direction of the door glass 5. The vehicle interior cover lip 33 is formed so as to cover the side portion of the garnish 50 mounted on the vehicle interior side of the door frame 2, and, like the straight portion 11, the corner portion 2 b of the door frame 2 and the glass run 10. The gap portion of the corner portion 12 is covered.
Similarly to the above, the seal lip and the cover lip are connected by continuously changing the shape difference between the upper side portion and the vertical side portion on the rear side at the corner portion.

In the corner portion 12 of the glass run 10, first vehicle inner side holding lips 34 a and 34 b and second vehicle inner side holding lips 35 a and 35 b are formed on the outer surface of the vehicle inner side wall 30.
In the corner portion 12 of the glass run 10, the first vehicle inner side holding lips 34 a and 34 b are provided with a gap at the tip, and are easily deformed flexibly when the corner portion 12 is attached to the corner portion 2 b of the door frame 2. It is formed so that it can be attached to.

Next, the bottom wall 23 of the corner portion 12 will be described.
First, a reference example of the present invention will be described with reference to FIG.
The corner portion 12 is formed so as to correspond to the corner portion 2a of the corner portion 2b of the door frame 2, and the top portion 43 of the apex portion of the cross-sectional triangle of the bottom wall 40 of the corner portion 12 has an outer surface of the corner portion 2b. A convex portion 45 is formed toward the corner portion 2a. A caulking sponge 60 is attached to the outer surface of the bottom wall 40 of the corner portion 12. The caulking sponge 60 is attached to the front and rear of the top portion 43 of the corner portion 12 so as to cover the convex portion 45.

For this reason, at the top 43, the caulking sponge 60 can be protruded toward the corner 2a of the corner 2b, and when the glass run 10 is attached to the door frame 2, the corner 12 of the glass run 10 The caulking sponge 60 can be filled in the gap formed between the top 43 of the bottom wall 40 and the corner 2b of the door frame 2. Furthermore, the convex part 45 formed in the outer surface of the top part 43 of the bottom wall 40 can press the caulking sponge 60 on the part produced in the triangular corner of the door frame 2, and the corner part 2a can be completely filled. it can.
Moreover, since the convex part 45 is formed in the outer surface of the top part 43 of the bottom wall 40, even if it does not form a convex part in the caulking sponge 60, the caulking sponge 60 is protruded toward the corner | angular part 2a of the door frame 2. FIG. Thus, the sealing performance can be improved.

In the reference example of the present invention, the convex portion 45 of the bottom wall 40 is formed by thickening the portion of the bottom wall 40 that protrudes from the outer surface of the top portion 43, so that the convex portion 45 has high rigidity and caulking. The sponge 60 can be strongly pressed against the corner 2a of the door frame 2. For this reason, the caulking sponge 60 can be reliably filled up to a small gap at the triangular apex of the corner 2a, and the sealing performance of the corner 12 is high.

Next, FIG. 2 is a cross-sectional view of the corner portion 12 of the glass run 10 according to the embodiment of the present invention . In the embodiment of the present invention , the top portion 43 of the bottom wall 40 has an inner surface formed in the concave portion 46 and the outer surface formed as a convex portion, and the thickness of the top portion 43 is substantially the same as the other portions of the bottom wall 40. As shown in FIG. For this reason, no depression such as sink marks occurs at the top portion 43 of the bottom wall 40 during molding. Since the inner surface of the top portion 43 of the bottom wall 40 is formed as a concave portion, the concave portion 46 can be deformed when the corner portion 12 of the glass run 10 is attached to the corner portion 2b of the door frame 2, and the corner portion 12 is flexible. It is easy to attach to the corner portion 2b of the door frame 2.
Further, since the top portion 43 of the bottom wall 40 is formed of a solid material, the caulking sponge 60 can be reliably pushed to the corner portion 2a of the door frame 2, and the sealing performance of the corner portion 12 can be ensured. .

Next, the shape of the straight portion 11 of the glass run 10 will be described.
As shown in FIG. 5, 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 that the main body has a substantially cross-sectional shape from the vehicle outer side wall 20, the vehicle inner side wall 30 and the bottom wall 40. It is formed in a letter 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 body of the straight portion 11 of the glass run 10 is basically substantially the same in cross section as the corner portion 12, both of the portion attached to the upper side portion 2g of the door frame 2 and the portion attached to the vertical side portions 2e, 2f, 2h. It has a U-shaped cross-sectional shape.

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 exterior cover lip 23 covers the front end of the door molding 4. The door molding 4 and the door frame 2 form a substantially U-shaped section, and the glass run 10 is held therein.

On the outer side surface of the vehicle outer side wall 20, a vehicle outer side holding lip 24 with which the side surface of the door molding 4 whose one side surface is fixed to the door frame 2 abuts the side surface bent is the outer side wall 20. It is formed on the side of the bottom wall 40.
In the embodiment of the present invention, the door frame 2 does not have the channel 3 having a substantially U-shaped cross section for holding the glass run 10 as in the conventional case at the upper side 2g. And is held in a substantially U-shaped section formed by a door molding 4 fixed to the door frame 2.

  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 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, the outer seal lip is formed on both the inner side and the outer side of the upper end of the door glass 5. 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.

A low-sliding member such as urethane resin is applied to the surface of the vehicle exterior seal lip 21 and the surface of the vehicle interior seal lip 31 which will be described later on which the door glass 5 abuts. For this reason, when the door glass 5 slides in the glass run 10, the sliding resistance can be reduced, and generation | occurrence | production of abnormal noise and the shift | offset | difference of a glass run can be prevented.
Further, a low sliding member such as silicon 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 seal lip 21. 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 bottom wall 40 is formed in a substantially plate shape, and a groove portion 42 is formed in a continuous portion between the vehicle inner side wall 30 and the vehicle outer side wall 20 so as to be easily bent. Bottom wall holding lips 41, 41 are formed on both side ends of the outer surface of the bottom wall 40, abutting against the bottom surface of the front end portion of the door frame 2, and sealing between the door frame 2 and the glass run 10.
A low sliding member such as urethane resin is applied to the inner surface of the main body of the glass run 10 of the bottom wall 40 in the same manner as the seal lips 21 and 31. For this reason, sliding resistance with the door glass 5 can be reduced.

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 held on the side surface of the door frame 2, and the glass run 10 can be firmly held together with the door molding 4 described above.
A vehicle interior cover lip 33 extends from the front end of the vehicle interior side wall 30 in parallel with the extending direction of the vehicle interior side wall 30, i.e., the ascending / descending direction of the door glass 5. The vehicle interior cover lip 33 is formed so as to cover the side portion of the garnish 50 mounted on the vehicle interior side of the door frame 2. Thereby, the appearance between the door frame 2 and the side part of the garnish 50 can be improved.

  Similar to the vehicle outer side wall 20, a vehicle inner seal lip 31 extends obliquely from the tip 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 first vehicle inner side holding lip 34 is formed on the outer surface of the vehicle inner side wall 30 on the front end side, and a second vehicle inner side holding lip 35 is formed in the vicinity of a continuous portion with the bottom wall 40. A first recess 2 h is formed on the garnish 50 side on the vehicle outer side wall of the door frame 2, and a second recess 2 k is formed on the side close to the mounting portion of the bottom wall 40. The first vehicle inner side holding lip 34 is locked to the first concave portion 2h, and the second vehicle inner side holding lip 35 is locked to the second concave portion 2k. For this reason, the glass run 10 can be hold | maintained at the door frame 2 with the above-mentioned door molding 4, the 1st recessed part 2h, and the 2nd recessed part 2k.

In the molding of the straight portion 11 of the glass run 10, synthetic rubber, thermoplastic elastomer, or soft synthetic resin is used as the molding material. For example, EPDM rubber is used for synthetic rubber, and polyolefin elastomer or soft synthetic resin is used for thermoplastic elastomer. Then, soft vinyl chloride or the like 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, the molding part of the corner portion 12 of the glass run 10 is molded by cutting the extruded member manufactured as described above into a predetermined dimension, and molding the end part of the cut extruded part into the molding part. A solid material that forms a mold-molded portion is injected into a cavity of the mold by sandwiching the mold. The cross-sectional shape of the molded part is substantially the same as the cross-sectional shape of the extruded part. 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, it is the same kind of material and has good adhesion between the straight line portion and the corner portion of the 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. In the case of an olefin-based thermoplastic elastomer, vulcanization is not required, and therefore production is easy.
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 use the same material or the same kind of material, vulcanization adhesion can be performed, and they can be fixed integrally.

It is sectional drawing of the corner part of the glass run which is a reference example of this invention, and is sectional drawing along CC in FIG. Is a cross-sectional view of a corner portion of the glass run according to the embodiment of the present invention, is a cross-sectional view taken along a line C-C in FIG. 3. It is a perspective view of the corner part of the glass run which is a reference example of this invention. It is sectional drawing of the state which mounted | wore the upper side part of the door frame with the glass run which is embodiment of this invention, and is sectional drawing along AA in FIG. It is sectional drawing of the state which mounted | wore the corner part with the glass run which is 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 a perspective view of the corner part of the conventional glass run. It is a perspective view of the corner part of the other conventional glass run.

Explanation of symbols

2 Door frame 2b Corner part 5 Door glass 10 Glass run 11 Straight line 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 43 Corner part 45 Convex part 46 Concave part 60 Caulking material (Caulking sponge)

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. In a glass run for an automobile having 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 body of the straight portion and corner portion of the glass run comprises a substantially U-shaped cross section consisting of a vehicle outer side wall, a vehicle inner side wall, and a bottom wall, and the corner portion is bent at the top of the corner where the bottom wall is bent. A convex portion is formed on the outer surface, and the convex portion of the bottom wall is formed such that the inner surface of the top portion of the bottom wall is formed as a concave portion, the outer surface of the top portion is a convex portion, and the top portion is substantially the same as other portions of the bottom wall. A glass run for automobiles, wherein the glass run is formed to be thick and covers a convex portion and a caulking material is attached to an outer surface of the bottom wall. The glass run for automobiles according to claim 1, wherein the caulking material is a sponge material. The vehicle exterior side wall and the vehicle interior side wall are respectively provided with a vehicle exterior seal lip and a vehicle interior seal lip extending toward the interior of the main body having a substantially U-shaped cross section. The glass run for automobiles according to claim 1 or 2 , wherein the vehicle outer side surface and the vehicle inner side surface of both side end portions of the door glass are sealed by a seal lip. The corner portion of the glass run has a convex portion formed on the outer surface of the top portion of the bottom wall, both of the corner portions mounted on both the front side and rear side corner portions of the door frame. The automotive glass run according to any one of claims 1 to 3 , wherein a caulking material is attached to an outer surface of the bottom wall. The linear part of the said glass run is formed with EPDM rubber or an olefin type thermoplastic elastomer, The corner part of the said glass run is formed with the olefin type thermoplastic elastomer in any one of Claims 1 thru | or 4 . Glass run for automobiles.

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