JP2006021609A - Glass run for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run for an automobile equipping with a glass guide part having an excellent appearance. <P>SOLUTION: In the glass run 10 for the automobile, a side wall 20 on a vehicle outside of a part mounted to the upper side of a door frame 2 of a glass run body part 11, and the glass guide part 70 are formed by molding on the notch part by cutting off a predetermined length from a part of a bottom wall 40. The glass guide part 70 has a glass guide part side wall 72 forming the side wall on the vehicle outside, a glass guide part bottom wall 74 composing a part of the bottom wall, and a glass guide part lip 71 which obliquely extends from the tip end of the glass guide part side wall 72 to the vehicle outside direction. A thinned part 75 opening to the side surface on a vehicle inside is formed on the central part in the glass guide part lip 71 of the glass guide part 70. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an automotive glass run that is attached to the inner periphery of a door frame of an automobile door, guides the raising and lowering of the door glass, and seals between the door frame and the door glass.

  As shown in FIG. 5, a glass run 110 for guiding the raising and lowering of the door glass 5 is attached to the inner periphery of the door frame 2 of the automobile door 1. The conventional structure is shown in FIG. FIG. 6 is a partial perspective view showing a portion where the glass guide portion 170 is provided on the glass run 110.

  Conventionally, the glass run 110 is attached in the channel 3 of the door frame 2 as shown in FIG. 5, and guides the raising and lowering of the door glass 5 and seals between the door glass 5 and the door frame 2. . The glass run 110 has a linear extruded portion formed by extrusion molding and a molded portion formed in accordance with the shape of the corner portion of the door frame 2, and both are simultaneously formed when the molded portion is molded. It is connected.

  Further, as shown in FIG. 6, the glass run 110 includes a glass run main body having a substantially U-shaped cross section including a vehicle outer side wall 120, a vehicle inner side wall 130, and a bottom wall 140 in its cross section. .

  A vehicle outer side seal lip 150 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 glass run main body having a substantially U-shaped cross section. Further, the vehicle interior side wall 130 is also provided with a vehicle interior seal lip 160 extending from the vicinity of the front end thereof toward the inside of the glass run main body having a substantially U-shaped cross section. The vehicle outer side wall 120, the vehicle inner side wall 130, and the bottom wall 140 are inserted into the channel 3 of the door frame 2, and at least the outer surfaces of the vehicle outer side wall 120 and the vehicle inner side wall 130 are in contact with the inner surface of the channel 3, A glass run 110 is held and attached to the inner periphery of the door frame 2.

  The door glass 5 is slid by being guided by the vehicle exterior seal lip 150 and the vehicle interior seal lip 160 inside the glass run main body portion having a substantially U-shaped cross section of the glass run 110 at the vertical side portion. At the same time, both side surfaces of the sealing lips 150 and 160 are sealed and held (see, for example, Patent Document 1).

  However, the door glass 5 is raised and lowered for ventilation or the like. When the automobile is traveling at high speed, the door glass 5 is sucked out of the vehicle due to a pressure difference. When the door glass 5 is raised in this state, the front end (upper end) of the door glass 5 is sucked out of the vehicle and displaced outwardly, and the vehicle of the glass run 110 provided on the upper side of the door frame 2 is moved. When it hits the front-end | tip of the outer side wall 120, it may become difficult to insert the door glass 5 in a glass run main-body part.

  Therefore, as shown in FIG. 6, a glass guide portion 170 that guides the door glass 5 is provided at the front end of the vehicle outer side wall 120 in the upper side portion of the glass run 110 (see, for example, Patent Literature 2 and Patent Literature 3). .)

  In order to provide the glass guide part 170, as shown in FIG. 6, a part of the vehicle outer side wall 120 and the bottom wall 140 of the glass run 110 is cut out, and the glass guide part 170 is formed in the cut out part by molding. .

  However, the glass guide portion 170 is formed of a hard material so that the door glass 5 can be guided without being deformed by the door glass 5 when the door glass 5 abuts. Moreover, it is formed so as to protrude outward from the glass run 110 for guidance. For this reason, there is a case in which the film is partially thick and the appearance is deteriorated due to the occurrence of sink marks or the like after molding.

In order to solve this, a technique for hollowing the inside of the glass guide part 170 has been proposed, but the glass guide part 170 is formed to protrude outward from the glass run 110 as described above. When the material is relatively soft immediately after molding, the opening part is broken if the hollow forming direction is different from the pulling direction of the core mold at the stage of pulling out the core mold to make the hollow inside. There was a problem. In addition, since a hollow is present in the base portion of the guide lip portion of the glass guide portion 170, the base portion of the guide lip portion has low rigidity, and the base portion is easily deformed when the door glass 5 is in contact.
JP 2000-25462 (page 2-3, FIG. 2) Japanese Examined Patent Publication No. 63-3771 (Fig. 4) Japanese Patent Laid-Open No. 4-110227 (FIG. 5)

  Therefore, the present invention can reliably guide the tip of the door glass into the glass run body even when the door glass is sucked out to the outside of the vehicle during high-speed traveling, etc. An object of the present invention is to provide a glass run for automobiles which does not generate and does not deteriorate the appearance quality.

In order to solve the above-mentioned problems, the present invention of claim 1 is attached to the inner periphery of a door frame of an automobile door, guides the raising and lowering of the door glass, and includes an outer side wall, an inner side wall, and a bottom wall. A vehicle-runner seal lip and a vehicle, each having a glass run body portion having a substantially U-shaped cross section and extending toward the inside of the glass run body portion having a substantially U-shaped cross section on the vehicle outer side wall and the vehicle inner side wall, respectively. In an automotive glass run provided with an inner seal lip, the vehicle outer side seal lip and the vehicle inner side seal lip seal the vehicle outer side surface and the vehicle inner side surface at the end of the door glass.
The vehicle runner side wall and the bottom wall of the glass run main body part attached to the upper side of the door frame are notched to a predetermined length, and a glass guide part is formed by molding in the notch.
The glass guide portion extends obliquely outward from the front end of the glass guide portion side wall, a glass guide portion side wall forming a part of the bottom wall, and a glass guide portion side wall. And a glass guide lip to
The glass guide lip is a glass run for an automobile characterized in that a lightening portion opened on an inner side surface of the vehicle is formed at a central portion thereof.

  In the first 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, extending toward the inside of the substantially U-shaped cross section of the glass run body. Yes. The vehicle outer side seal lip and the vehicle inner side seal lip seal the vehicle outer side surface and the vehicle inner side surface of the end portion of the door glass inserted inside the glass run main body portion, and hold the end portion of the door glass. it can. Therefore, it is possible to seal between the door frame and the door glass.

  Because the car outer side wall and the bottom wall of the part that is attached to the upper side of the door frame of the glass run are partially cut out by a predetermined length, and the glass guide part is formed by molding in the notch, the door glass rises. When reaching the upper side of the glass run, even if it is sucked out of the car and displaced outwardly, it is guided by the glass guide and reliably guides the tip of the door glass into the glass run body. be able to.

  The glass guide part has a glass guide part side wall forming a vehicle outer side wall and a glass guide part bottom wall constituting a part of the bottom wall, and the glass guide part side wall and the glass guide part bottom wall are formed by an extruded part. The glass guide body can be fixed to the glass run, and the glass guide lip can be securely held in place as will be described later. it can.

  Because the glass guide lip that extends obliquely outward in the vehicle direction is provided at the tip of the glass guide side wall, the door glass rises even if the tip (upper end) of the door glass is sucked out and displaced outward. Then, the front end abuts on the glass guide lip extending in the vehicle outward direction, and is guided by the glass guide lip to reach the front end of the vehicle outer side wall. Further, the front end of the door glass is guided into the inside of the glass run main body along the vehicle exterior seal lip.

  In the glass guide lip, a thinned portion that is open on the inner side surface of the vehicle is formed at the center. For this reason, the appearance defect accompanying generation | occurrence | production of sink marks etc. does not arise. The glass guide lip is formed to protrude outward from the glass run body. And even when the material is still relatively soft immediately after mold forming, the formation direction of the thinned portion and the mold opening direction of the mold are substantially matched, so the glass guide lip is forced Does not occur, and the opening of the core mold is not torn.

  The present invention of claim 2 is the glass run for automobiles, wherein the glass guide portion is made of a thermoplastic elastomer harder than the material constituting the glass run body portion.

  In the present invention of claim 2, since the glass guide portion is made of a thermoplastic elastomer harder than the material constituting the glass run body portion, when the door glass rises and comes into contact with the glass guide portion lip Moreover, the glass guide part side wall and the glass guide part lip are not deformed, and the tip of the door glass can be guided and accommodated in the glass run body part.

  Further, since the glass guide portion is made of a thermoplastic elastomer, a predetermined hardness can be freely selected, and there is no need for vulcanization, and molding is easy, and the glass run body portion of the extrusion molding portion. It is also possible to reliably perform welding.

  According to the third aspect of the present invention, the cutouts of the vehicle outer side wall and the bottom wall of the glass run main body part are formed leaving the vehicle outer side seal lip, and the remaining vehicle outer side seal lip is formed by molding. An automotive glass run characterized by being integrally joined to a glass guide portion.

  According to the third aspect of the present invention, a part of the vehicle outer side wall and the bottom wall of the glass run main body is cut away leaving the vehicle outer side seal lip. The remaining vehicle exterior seal lip is joined integrally with the glass guide portion by molding. For this reason, the glass guide portion can be formed of a hard material, and even when the glass guide portion is formed of a hard material, the vehicle exterior seal lip can be formed of a softer material than the glass guide portion. In addition, the vehicle outer side seal lip can be elastically brought into contact with the door glass, and sealing performance can be ensured.

  Further, since the vehicle outer side seal lip is continuously left in the longitudinal direction, there is no connection portion or step in the vehicle outer side seal lip in the glass guide portion, and a gap is generated in the contact portion with the door glass. There is nothing. For this reason, it is excellent in sealing performance.

  According to a fourth aspect of the present invention, there is provided a glass run for an automobile, wherein the lightening portion of the glass guide portion lip is constituted by one concave portion.

  In the present invention of claim 4, since the lightening portion of the glass guide lip is constituted by one concave portion, the mold structure is simplified and the mold part is released from the concave portion as the thinning portion. It can be done easily. In addition, since the contact between the glass guide lip and the door glass is only the frame-shaped portion around the thinned portion of the glass guide lip, the contact area with the door glass is reduced, and the frictional resistance can be reduced. Therefore, the door glass can slide only on the surface of the frame-like portion, and the door glass can be smoothly guided.

  According to a fifth aspect of the present invention, there is provided a glass run for an automobile, wherein the lightening portion of the glass guide lip is composed of a plurality of concave portions.

  In the present invention of claim 5, since the lightening portion of the glass guide lip is constituted by a plurality of concave portions, the concave portion is reinforced with a plurality of ribs, and the glass guide portion is provided even if the lightening portions are provided. The rigidity of the lip is ensured, and the door glass can be reliably guided without deformation of the glass guide lip.

  In the present invention, a part of the vehicle outer side wall and the bottom wall of the glass run main body part of the extrusion molding part is cut out, and the glass guide part is integrally formed in the cutout part by molding. Therefore, when the door glass rises, the upper end of the door glass can be reliably guided to a predetermined position by the glass guide portion.

  Further, the glass guide part is formed with a glass guide part lip extending obliquely outward from the front end of the side wall of the glass guide part. Formed in the center. Therefore, there is no portion where the thickness of the glass guide lip becomes thick, and the occurrence of sink marks or the like can be prevented. Further, since the lightening portion is open on the inner side surface of the vehicle, the outer side surface of the vehicle can form a smooth surface as in the conventional case, and the appearance quality is not deteriorated in a side view of the vehicle.

  Also, when the glass guide part is molded, the glass guide part lip is formed so as to protrude outward from the glass run body part, and even when the material is still relatively soft immediately after mold forming, it is used to form the hollow part Since the mold forming direction and the mold opening direction are almost the same, there is no undercut part, and the opening part is not torn due to the extraction of the core mold as in the conventional example. Good products can be produced stably.

  Furthermore, since there is no space in the base portion of the glass guide lip due to the extraction of the core mold as in the conventional example, the rigidity of the base portion of the glass guide lip is increased, and the door glass rises. Even when the door glass comes into contact, the base portion of the glass guide lip is not deformed, and the door glass can be smoothly guided into the glass run main body.

  Furthermore, since the thinned portion is formed, the contact between the glass guide lip and the door glass becomes only a frame-shaped portion around the thinned portion of the glass guide lip, and the contact area with the door glass is reduced. . Therefore, the door glass can slide only on the surface of the frame-shaped part, and can reduce the frictional resistance with the glass guide part lip, and is smoothly guided into the glass run body part.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a side view of the front door of the automobile. As shown in FIG. 5, a door frame 2 is provided on an upper portion of a door 1 of an automobile, and a door glass 5 is attached to be movable up and down. That is, a channel 3 is provided on the inner periphery of the door frame 2, and a glass run 10 is attached to the inside of the channel 3 to guide the raising and lowering of the door glass 5 and between the door glass 5 and the door frame 2. Is sealed.

  First, the first embodiment will be described.

  The glass run 10 includes a substantially linear extruded portion formed by extrusion molding as a whole, and a molded portion that is formed by molding and connects the extruded portions. The extrusion molding part consists of a part attached to the upper side part of the door frame 2, a part attached to the rear side vertical side part, and a part attached to the front side vertical side part. The molded part is a part that connects these extruded parts, is molded to have a shape corresponding to the corner part of the door frame 2, and is attached to the corner part of the door frame 2.

  A portion of the glass run 10 attached to the front side vertical side portion of the door frame 2 is a portion that extends substantially vertically from the belt line portion of the door 1. In addition, the part below the belt line site | part in the front side vertical side part of the glass run 10 is attached to the channel member provided in the door panel. The portion attached to the upper side portion of the door frame 2 is a portion attached to the rear side vertical side portion of the door frame 2 from the tip of the portion attached to the front side vertical side portion along the shape of the upper side portion of the door frame 2. This is the part until it is connected to the tip. The shape of the upper side portion of the glass run 10 extends obliquely upward in the rear direction from the tip of the front side vertical side portion, and extends substantially horizontally from the vicinity of the center of the upper side portion of the door glass 5 in the rear direction.

  As shown in FIG. 5, a glass guide portion 70 to be described later is provided at a location extending obliquely upward in the rear direction from the front end of the front side vertical side portion of the portion attached to the upper side portion of the door frame 2 of the glass run 10. . Since the glass guide portion 70 is provided at a position extending obliquely upward in the rear direction from the front end of the front vertical side portion, when the door glass 5 is raised, before the front end of the door glass 5 reaches the uppermost portion. The front end of the door glass 5 can be guided into the glass run main body 11.

  FIG. 1 shows a cross-sectional shape of the glass guide portion 70 provided in the upper side portion of the door frame 2, and is a cross-sectional view taken along the line AA in FIG. FIG. 1 shows a state in which the glass guide portion 70 of the glass run 10 is attached in the channel 3 of the door frame 2, and FIG. 2 is a partially enlarged perspective view of the glass guide portion lip 71 of the glass guide portion 70. FIG. 3 is a perspective view showing a state in which a part of the glass run 10 is cut away in order to provide the glass guide portion 70.

  First, the glass run 10 will be described. As shown in FIG. 3, the glass run 10 has a glass run main body portion 11 including an outer side wall 20, an inner side wall 30, and a bottom wall 40, and the glass run main body portion 11 has a substantially U-shaped cross section. Is formed. A vehicle interior seal lip 60 extends from the vicinity of the front end of the vehicle interior side wall 30 toward the inside of the glass run main body 11 having a substantially U-shaped cross section. A vehicle interior cover lip 31 is inverted from the front end of the vehicle interior side wall 30 and extends along the outer surface of the vehicle interior side wall 30. A vehicle outer side seal lip 50 extends from the front end of the vehicle outer side wall 20 toward the inside of the glass run main body 11 with a substantially U-shaped cross section, and a vehicle outer cover lip 21 extends from the front end of the vehicle outer side wall 20. And is extended along the outer surface of the vehicle outer side wall 20.

  As shown in FIG. 1, when the glass run 10 is attached to the channel 3 of the door frame 2, the vehicle inner side holding lip 32 of the vehicle inner side wall 30 is engaged with the step portion provided on the inner surface of the channel 3. This prevents the glass run 10 from coming out of the channel 3. The vehicle interior cover lip 31 and the vehicle interior side wall 30 sandwich the vehicle interior side wall of the channel 3 and the flange of the door frame 2 so that the vehicle interior portion of the glass run 10 is attached. 3 is sealed.

  In the vehicle outer side portion, the outer surface of the vehicle outer side wall 20 is brought into contact with the inner surface of the vehicle outer side of the channel 3, and the vehicle outer side wall and the door frame of the channel 3 are formed by the vehicle outer side cover lip 21 and the vehicle outer side wall 20. The outside portion of the glass run 10 is attached so as to sandwich the flange 2. Then, the gap between the glass run 10 and the channel 3 is sealed by the vehicle outer side holding lip 22. The vehicle outer side holding lip 22 is engaged with the edge of the folded flange of the door frame 2 to prevent the glass run 10 from coming out of the channel 3.

  Further, when the glass run 10 is attached to the channel 3, the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40 are substantially U-shaped in cross section, and at least the outer surfaces of the vehicle outer side wall 20 and the vehicle inner side wall 30 are channel-shaped. 3, the glass run 10 is stably held.

  In FIG. 1, the outer side portion of the glass run 10 is constituted by a glass guide portion 70, and the outer side wall of the channel 3 and the door frame 2 are the same as the glass run 10 of the general portion of the extruded portion. Are attached so as to be sandwiched between the glass guide portion cover lip 73 and the glass guide portion side wall 72.

  As shown in FIG. 3, the inner root portion of the inner side wall 30 of the inner seal lip 60 and the inner root portion of the outer seal lip 50 with the outer side wall 20 are the inner seal lip 60 and the outer seal. In order to improve the bending of the lip 50, a thin portion is provided. By providing the thin portion, the vehicle outer side seal lip 50 and the vehicle inner side seal lip 60 are easily bent.

  A low sliding member such as a urethane paint, a silicone paint, a thin layer of polyolefin resin, or the like is provided on the surfaces of the vehicle interior seal lip 60 and the vehicle exterior seal lip 50.

  When the door glass 5 is raised and its upper end is inserted into the glass run main body 11, the front end of the vehicle interior seal lip 60 and the vehicle exterior seal lip 50 abut each other on the side surface of the door glass 5 in line contact. To seal between the door glass 5 and the glass run 10. Since the low sliding member is provided on the surfaces of the vehicle outer side seal lip 50 and the vehicle inner side seal lip 60 as described above, the door glass 5 can be moved up and down smoothly.

  The glass guide portion 70 is provided by cutting out a part of the glass run 10 attached to the upper side portion of the door frame 2 as described above. As shown in FIG. 3, first, the entire width of the vehicle outer side wall 20 and the vehicle outer side cover lip 21 of the glass run 10 and the substantially half width of the bottom wall 40 are cut out over several centimeters in the longitudinal direction. At that time, the outside seal lip 50 is left as it is and continues in the longitudinal direction.

  Thereafter, the notch portion is set in a mold, and a thermoplastic elastomer is injected into the notch portion by molding to form the glass guide portion 70. The glass guide part 70 is formed by welding integrally with the glass run body part 11 at the time of molding.

  As shown in FIG. 1, the glass guide portion 70 includes a glass guide portion side wall 72 formed at a portion corresponding to the vehicle outer side wall 20 and a glass guide formed at substantially half of the portion corresponding to the bottom wall 40. It is comprised from the part bottom wall 74 and the glass guide part cover lip 73 formed in the part corresponding to the vehicle outer side cover lip 21. FIG.

  A glass guide portion lip 71 is formed obliquely outward from the connecting portion between the tip of the glass guide portion side wall 72 and the base of the glass guide portion cover lip 73. The vehicle exterior seal lip 50 is integrally fused to the vehicle interior side of the continuous portion of the glass guide portion lip 71 with the glass guide portion side wall 72. The base portion of the glass guide lip 71 is a connecting portion between the glass guide portion side wall 72 and the glass guide portion cover lip 73 as described above. It is high.

  The glass run 10 is cut away leaving the vehicle outer seal lip 50, and the remaining vehicle outer seal lip 50 is integrally joined to the glass guide portion 70 by molding, so that the vehicle outer seal lip 50 is connected to the glass run main body 11. Can be made softer than the glass guide portion 70. For this reason, the vehicle outer side seal lip 50 can be elastically brought into contact with the side surface of the door glass 5, and the sealing performance can be ensured.

  Further, since there is no connection portion in the longitudinal direction of the vehicle exterior seal lip 50 at the contact point between the glass guide portion 70 and the notch, there is no level difference and the contact portion between the door glass 5 and the vehicle exterior seal lip 50 is not formed. There is no gap.

  The door glass 5 is sucked out of the vehicle due to a difference in atmospheric pressure when traveling at high speed. The door glass 5 is formed with a long vertical side portion on the rear side and holds the side end of the glass run 10. On the front side, the vertical side portion is short and the force for holding the side end of the glass run 10 becomes weak. ing. For this reason, when the door glass 5 is moved up and down during high-speed traveling, the tip of the door glass 5 is easily sucked out to the outside of the vehicle.

  The glass guide portion lip 71 of the glass guide portion 70 is formed of a hard thermoplastic elastomer because it is formed so as not to be easily deformed against the suction to the outside of the vehicle. Therefore, when the door glass 5 rises and the front end of the door glass 5 reaches the upper side of the door frame 2, the front end of the door glass 5 is positioned on the outer side of the glass run 10 or the outer side of the glass run 10. Even when located at the front end of the side wall 20, the front end of the door glass 5 can be guided and accommodated in the glass run main body 11.

  As shown in FIG. 2, the glass guide portion lip 71 of the glass guide portion 70 is formed with a lightening portion 75 that is open on the inner side surface of the vehicle at the center thereof. Since the thickness of the thinned portion 75 is set to be substantially the same as the thickness of the glass guide side wall 72 and the glass guide portion cover lip 73, deformation and appearance such as sink due to material shrinkage after molding. There is no defect.

In particular, since there is no space in the base portion of the glass guide lip 71 as in the conventional example, the rigidity of the base portion of the glass guide lip 71 is increased, the door glass 5 is raised, and the door Even when the glass 5 abuts, the base portion of the glass guide lip 71 is not deformed, and the door glass 5 can be smoothly guided into the glass run main body 11.

In addition, since the width of the frame-shaped portion around the opening of the above-described thinned portion 75 is narrow, sink marks or the like due to material shrinkage do not occur. Furthermore, the contact with the door glass 5 is only this frame-shaped part, so the contact area with the door glass 5 is small, the door glass 5 can slide only on the surface of the frame-shaped part, and the frictional resistance can be lowered. The door glass 5 can be smoothly guided.

  Furthermore, since the thinned portion 75 is constituted by one concave portion, the mold structure is simplified and the mold portion can be easily released from the concave portion as the thinned portion 75.

  In addition, the glass guide part 70 of 1st Embodiment shown in FIGS. 1-3 is formed with the hard thermoplastic elastomer. When the thermoplastic elastomer is an olefin-based thermoplastic elastomer, for example, a hard thermoplastic elastomer having a rubber EPDM of 40% or less and a resin polypropylene of 60% or more may be used. it can.

  Next, a second embodiment will be described based on FIG. FIG. 4 is a perspective view of the glass guide portion 80 portion of the second embodiment. Only differences from the first embodiment will be described.

  In the second embodiment, the lightening part 85 of the glass guide part lip 81 is constituted by a plurality of concave parts. Since the lightening portion 85 is constituted by a plurality of concave portions, the lightening portion 85 is reinforced with a plurality of ribs, and even if the lightening portion 85 is provided, the rigidity of the glass guide lip 81 is ensured, The door glass 5 can be reliably guided. The shape of the plurality of recesses is not limited to a quadrangle, and may be an irregular shape such as a circle, an ellipse, a polygon, or a star.

  In the above-described embodiment, the notch on the outer side wall and the bottom wall of the glass run main body part is shown with the outer side seal lip formed, but the outer side seal lip is shown. In addition, it may be cut out together and formed integrally with the vehicle exterior side wall portion when the glass guide portion is molded, and may be integrally joined to the vehicle exterior seal lip of the extrusion molded portion.

  In this case, the productivity is improved as compared with the case where the cutout portion is formed leaving the vehicle outer side seal lip. Although there may be a connection step in the longitudinal direction of the vehicle outer seal lip, it is only a limited portion on the vehicle outer side, and the seal is continuous on the vehicle inner side, so rainwater or the like enters the vehicle interior. There is no such thing. In addition, since the glass guide portion formed by molding is formed of a hard thermoplastic elastomer and has a low sliding resistance, it is not necessary to provide a separate low sliding member on the surface of the vehicle outer seal lip of the glass guide portion. Also good.

  Next, the manufacturing method of the glass run 10 of this invention is demonstrated. The glass run 10 is first formed into an extruded portion that is a straight portion. Extrusion of the extruded part is performed using a thermoplastic elastomer or synthetic rubber. The cross-sectional shape of the glass run 10 at the time of extrusion molding is extrusion-molded so that the tip portion which is a substantially U-shaped opening is slightly opened.

  As the molding material, synthetic rubber, thermoplastic elastomer, and soft synthetic resin are used. For example, EPDM rubber is used for synthetic rubber, olefin-based elastomer is used for thermoplastic elastomer, and soft vinyl chloride is used for soft synthetic resin. 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 into a predetermined length, and the molding of the extruded portion is completed.

  Next, a molded part to be mounted on the corner portion of the door frame 2 will be described. Molding of the molded part is performed by sandwiching the end of the extruded part molded as described above in a mold for molding the molded part and injecting a solid material forming the molded part into the mold cavity. Done. 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 synthetic rubber, the mold is heated and vulcanized after being poured into the mold. At this time, since the extrusion molding part and the molding part can be vulcanized and bonded using the same material or the same kind of material, they are integrally fixed. In the case of a thermoplastic elastomer or a soft synthetic resin, since the injection material is melted when injected into the mold, the extruded part and the molded part are integrally fused by the heat. Even if the extruded part is made of EPDM rubber and the molded part is made of an olefin-based thermoplastic elastomer, they can be integrally fused during molding.

  As described above, the extruded portion and the molded portion are integrally coupled to manufacture the glass run 10, and further, as described above, a part of the vehicle outer side wall and the bottom wall of the glass run main body portion is notched, The glass run 10 of the present invention is manufactured by integrally molding the glass guide portion in the notch portion.

It is sectional drawing of the glass guide part which is embodiment of this invention. It is a perspective view of the glass guide part lip of the glass guide part which is embodiment of this invention. It is a perspective view of the glass run which notched the part which forms the glass guide part which is embodiment of this invention. It is a perspective view of the glass guide part lip of the glass guide part which is other embodiment of this invention. It is a side view of a motor vehicle door. It is a perspective view of the conventional glass guide part.

Explanation of symbols

2 Door frame 5 Door glass 10 Glass run 11 Glass run body 20 Car outer side wall 30 Car inner side wall 40 Bottom wall 50 Car outer seal lip 60 Car inner seal lip 62 Car inner seal lip bent part 70, 80 Glass guide part 71, 81 Glass guide lip 75, 85 Meat extraction part

Claims (5)

Mounted on the inner periphery of the door frame of the automobile door, guides the raising and lowering of the door glass, and includes a glass run main body having a substantially U-shaped cross section composed of a vehicle outer side wall, a vehicle inner side wall, and a bottom wall. A vehicle outer side seal lip and a vehicle inner side seal lip are provided on the outer side wall and the vehicle inner side wall, respectively, extending toward the inside of the glass run main body having a substantially U-shaped cross section. In an automotive glass run in which the vehicle outer side surface and the vehicle inner side surface of the end portion of the door glass are sealed with a seal lip,
The vehicle runner side wall and the bottom wall of the glass run main body part attached to the upper side of the door frame are notched to a predetermined length, and a glass guide part is formed by molding in the notch.
The glass guide portion extends obliquely outward from the front end of the glass guide portion side wall, a glass guide portion side wall forming a part of the bottom wall, and a glass guide portion side wall. And a glass guide lip to
A glass run for an automobile, wherein the glass guide portion lip has a hollow portion formed in an inner surface of the vehicle at a central portion thereof.   2. The glass run for automobiles according to claim 1, wherein the glass guide part is made of a thermoplastic elastomer harder than a material constituting the glass run body part.   Notches in the vehicle outer side wall and the bottom wall of the glass run main body part are formed leaving the vehicle outer side seal lip, and the remaining vehicle outer side seal lip is formed with the glass guide part during molding. The glass run for automobiles according to claim 1, wherein the glass run is integrally joined.   The glass run for automobiles according to claim 1, wherein the lightening portion of the glass guide portion lip is constituted by one concave portion.   The glass run for automobiles according to claim 1, wherein the lightening portion of the glass guide portion lip is composed of a plurality of concave portions.

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