JP2005329729A - Glass run for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass run for an automobile with excellent productivity capable of preventing generation of noise by preventing displacement or the like of a door glass by a pseudo-hollow-like indoor side seal lip and an outdoor side seal lip. <P>SOLUTION: In the glass run for the automobile, the outdoor side seal lip 50 and the indoor side seal lip 60 are provided on an outdoor side side wall 20 and an indoor side side wall 30 respectively and an outdoor side extension lip 55 and an indoor side extension lip 65 are bent and extended from respective distal ends of the outdoor side seal lip 50 and the indoor side seal lip 60 toward the outdoor side side wall and the indoor side side wall. The outdoor side extension lip 55 and the indoor side extension lip 65 are curved/formed so as to become projections toward the outdoor side side wall 20 and the indoor side side wall 30. <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 cross-sectional structure is shown in FIG. FIG. 6 is a cross-sectional view taken along the line AA of FIG.
Although FIG. 5 shows the front door, it can also be applied to the rear door.

  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 is connected by a molded part that forms a linear extruded part formed by extrusion molding in accordance with the shape of the corner part 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 the 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).

The glass run 110 includes a glass run main body portion having a substantially U-shaped cross section including an outer side wall 120, an inner side wall 130, and a bottom wall 140. 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. In addition, 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, the outer surfaces of which are in contact with the inner surface of the channel 3, and the glass run 110 is held on the inner periphery of the door frame 2. Is installed.
Note that low sliding members such as urethane paint are applied to the surfaces of the vehicle outer seal lip 150 and the vehicle inner seal lip 160 and the upper surface of the bottom wall 140.

The door glass 5 slides on the inside of the glass run main body having a substantially U-shaped cross section of the glass run 110, and both sides of the end of the door glass 5 by the vehicle outside seal lip 150 and the vehicle inside seal lip 160. The surface is sealed and held (see, for example, Patent Document 1). Also, the lengths of both the lips 150 and 160 are set so that the outside seal lip 150 and the inside seal lip 160 are not separated from the door glass 5 even if the door glass 5 vibrates during traveling. (For example, refer to Patent Document 2).
However, due to ventilation or the like, the door glass 5 may be raised or lowered halfway through the door frame 2. At this time, the door glass 5 is not held on the upper side of the door frame 2, and the door glass 5 is held only by the glass runs 110 at both ends, so that it vibrates in the lateral direction (vehicle width direction). There is. In addition, even when the door glass 5 is fully opened, the door glass 5 is sucked out of the vehicle and displaced outwardly when the vehicle is traveling at high speed, or the door glass 5 is moved by the vibration of the vehicle body when traveling on a rough road. There is a case where it vibrates (for example, see Patent Document 2).

  At this time, it is pushed by the vibration of the door glass 5, and the vehicle inner side seal lip 160 and the vehicle outer side seal lip 150 are brought into contact with or separated from the vehicle outer side wall 120 and the vehicle inner side wall 130, respectively. Further, since the vehicle interior seal lip 160 and the vehicle exterior seal lip 150 are lip shapes, the force to absorb the vibration of the door glass 5 is weak, and the door is formed inside the glass run main body having a substantially U-shaped cross section. The glass 5 could not be held sufficiently strong.

Therefore, it is also conceivable that the vehicle interior seal lip 160 and the vehicle exterior seal lip 150 are formed hollow with respect to the vehicle interior side wall 130 and the vehicle exterior side wall 120 to hold the door glass 5 with the hollow seal lip. It has been.
However, when a hollow seal lip is formed by extrusion molding, in order to prevent crushing due to negative pressure with respect to the hollow portion during extrusion molding, air of a predetermined pressure is continuously controlled to be hollow. Since it is necessary to supply the inside of the unit, the molding operation becomes complicated and the molding speed becomes slow, so the productivity is not good.
JP 2000-25462 (page 2-3, FIG. 2) JP 2002-19473 (page 5-5, FIG. 1 (b))

  Therefore, in the present invention, regardless of the position of the door glass in the glass run main body, both the vehicle outer side seal lip and the vehicle inner side seal lip form a pseudo hollow portion to prevent displacement and vibration of the door glass, An object of the present invention is to provide an automotive glass run that can reliably hold a door glass, prevent the generation of abnormal noise, and has excellent productivity.

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. In a glass run for automobiles equipped with a glass run body having a substantially U-shaped cross section,
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 glass run main body having a substantially U-shaped cross section. To seal the vehicle exterior and interior surfaces at both ends of the door glass inserted inside the glass run body, and bend the vehicle exterior extension lip toward the vehicle exterior side wall from the tip of the vehicle exterior seal lip. The vehicle interior extension lip is bent toward the vehicle interior side wall from the front end of the vehicle interior seal lip, and the vehicle exterior extension lip and the vehicle interior extension lip are respectively An automotive glass run characterized by being curved so as to be convex toward a vehicle inner side wall.

  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. 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 both side end portions 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.

Since the vehicle outer extension lip is bent and extended from the front end of the vehicle outer seal lip toward the vehicle outer side wall, when the door glass comes into contact with the vehicle outer seal lip, the front end of the vehicle outer extension lip is The front end of the vehicle outer side seal lip can be supported by coming into contact with the inner surface of the outer side wall, and the door glass can be held by the front end of the vehicle outer side seal lip.
Since the vehicle interior extension lip is bent toward the vehicle interior side wall from the tip of the vehicle interior seal lip, when the door glass contacts the vehicle interior seal lip, The tip of the inner extension lip abuts the inner surface of the bottom wall, and the tip of the vehicle inner extension lip is supported by the bottom wall, and is substantially triangular shaped by the vehicle inner seal lip, the vehicle inner extension lip, and the vehicle inner side wall. A pseudo hollow portion is formed. For this reason, the door glass can be reliably held by the substantially triangular pseudo hollow portion, and the vehicle interior seal lip can be supported.

In this way, the door glass can be held by the tip of the vehicle interior seal lip and the vehicle exterior seal lip. For this reason, the vibration of the door glass can be absorbed.
Also, during extrusion molding, the tip of the vehicle outer extension lip and the side of the vehicle outer side wall are molded away from each other, and the tip of the vehicle inner extension lip and the side of the vehicle inner side wall are molded away from each other. Therefore, extrusion molding is easy, the molding speed can be increased, and productivity is excellent.

Further, the front end of the vehicle outer seal lip and the vehicle are formed at a portion where the vehicle outer extending lip is bent from the front end of the vehicle outer seal lip and at a portion where the vehicle inner extended lip is bent from the front end of the vehicle inner seal lip. The front end of the inner seal lip can come into contact with the door glass in a line contact manner, and the door glass can be moved up and down smoothly.
Since the vehicle outer extension lip and the vehicle inner extension lip are curved so as to protrude toward the vehicle outer side wall and the vehicle inner side wall, respectively, when the door glass pushes the vehicle inner side seal lip, The extended lip and the vehicle interior extended lip are easily bent and easily absorb the vibration of the door glass.

  According to the second aspect of the present invention, when the door glass is inserted into the glass run main body, the tip of the vehicle-extended extending lip contacts the inner surface of the vehicle-exterior side wall, and the tip of the vehicle-side extending lip is the bottom wall projection. It is the glass run for motor vehicles contact | abutted to the boundary part of a part and the inner surface of a vehicle inner side wall.

  According to the second aspect of the present invention, when the door glass is inserted into the glass run main body, the front end of the vehicle-side extending lip contacts the inner surface of the vehicle-side side wall in the vehicle-side seal lip. When inserted into the inside of the glass run main body, a substantially triangular pseudo hollow portion can be formed by the vehicle outer side seal lip, the vehicle outer side extending lip, and the vehicle outer side wall. For this reason, the door glass can be elastically held at the tip of the vehicle outer side seal lip and sealed.

  Further, in the vehicle interior seal lip, when the door glass is inserted into the glass run main body, the tip of the vehicle interior extension lip contacts the boundary portion between the bottom wall projection and the inner surface of the vehicle interior side wall. The tip of the inner extension lip can be securely held, and a substantially triangular-shaped pseudo hollow portion formed by the vehicle inner seal lip, the vehicle inner extension lip and the vehicle inner side wall can be reliably formed. Elastically absorbs vibrations. Furthermore, the door glass can be pushed in the vehicle outward direction, and the step between the door glass and the door frame can be reduced.

  According to the third aspect of the present invention, when the door glass inserted into the glass run main body portion is displaced toward the vehicle interior side, the tip of the vehicle outer extension lip contacts the inner surface of the vehicle outer side wall. When the door glass is displaced to the outside of the vehicle, the front end of the lip extending outside the vehicle is an automotive glass run in which the front wall abuts the boundary portion between the bottom wall projection and the inner surface of the vehicle side wall.

According to the third aspect of the present invention, when the door glass inserted into the glass run main body portion is displaced toward the inside of the vehicle, the tip of the vehicle-side extending lip contacts the inner surface of the vehicle-side side wall. Therefore, even if the door glass vibrates and is displaced toward the inside of the vehicle, the vehicle-side seal lip can be supported by the vehicle-side extending lip, and the tip of the vehicle-side seal lip can surely contact the door glass.
When the door glass is displaced to the outside of the vehicle, the tip of the vehicle outside extending lip abuts on the boundary portion between the bottom wall projection and the inner surface of the vehicle outer side wall, so the vehicle outer side wall, the vehicle outer seal lip, and the vehicle outer side A space can be maintained between the extended lip and the door glass can be elastically held by the vehicle outer side seal lip. For this reason, the vibration of the door glass can be elastically and reliably absorbed.

  According to a fourth aspect of the present invention, there is provided an automotive glass run in which a low sliding member is provided on a surface of a vehicle inner side seal lip, a vehicle outer side seal lip, and an inner surface of a bottom wall.

  In the present invention of claim 4, since the low sliding member is provided on the surface of the vehicle inner seal lip, the vehicle outer seal lip and the inner surface of the bottom wall, the vehicle outer seal lip and the vehicle inner seal lip are made of door glass. The sliding resistance of the abutting portion can be reduced, the door glass can be raised and lowered smoothly, and the door glass is rubbed with the door glass during raising and lowering so that noise and vibration are less likely to occur. Further, the sliding resistance with the side edge of the door glass can also be reduced on the inner surface of the bottom wall.

  The present invention of claim 5 is the glass run for automobiles in which the vehicle outer extension lip and the vehicle inner extension lip are thinner than the vehicle outer seal lip and the vehicle inner seal lip, respectively.

  According to the fifth aspect of the present invention, the wall thickness of the vehicle outer extension lip and the vehicle inner extension lip is smaller than the wall thickness of the vehicle outer seal lip and the vehicle inner seal lip, respectively. When the vehicle outer side seal lip and the vehicle inner side seal lip are pushed toward the vehicle outer side wall and the vehicle inner side wall, the vehicle outer side extended lip and the vehicle inner side extended lip are formed to bend. In combination with this, the vehicle-side extending lip and the vehicle-side extending lip are easily bent, and the door glass can be elastically held. For this reason, the vibration of the door glass can be effectively absorbed.

  According to the present invention of claim 6, the glass run main body, the vehicle interior seal lip and the vehicle exterior seal lip are formed of a thermoplastic elastomer, and the surface of the vehicle interior seal lip and the vehicle exterior seal lip and the inner surface of the bottom wall are low-sliding. The moving member is an automotive glass run formed of a thermoplastic elastomer whose hardness is higher than the hardness of the thermoplastic elastomer of the glass run body.

In the present invention of claim 6, since the glass run main body part, the vehicle interior seal lip and the vehicle exterior seal lip are formed of a thermoplastic elastomer, it is not necessary to vulcanize and can be manufactured at a low cost. Recycling is easy. Moreover, since it can be lightly formed compared with a synthetic rubber, it can contribute to weight reduction of a vehicle.
Since the low sliding members on the inner seal lip and the outer seal lip and the inner surface of the bottom wall are both made of thermoplastic elastomer, the glass run body and the low sliding member are made of the same material. It can be used, and the glass run body and the low sliding member can be simultaneously formed by extrusion, and the production efficiency is good. Further, the glass run main body and the low sliding member can be firmly bonded by coextrusion molding.

  Thermoplastic elastomer of the low sliding member is higher than the hardness of the thermoplastic elastomer of the glass run body because the hardness of the thermoplastic elastomer of the low sliding member on the surface of the vehicle inner seal lip, the surface of the vehicle outer seal lip and the inner surface of the bottom wall is higher. The elastomer easily slides on the door glass, and the door glass can be easily moved up and down. Moreover, since it can shape | mold only by changing the hardness of the same kind of thermoplastic elastomer, shaping | molding is easy.

  According to the seventh aspect of the present invention, the glass run main body, the vehicle interior seal lip and the vehicle exterior seal lip are formed of synthetic rubber, and the vehicle interior seal lip, the surface of the vehicle exterior seal lip, and the inner surface of the bottom wall are low slidable. The member is a glass run for automobiles formed of a low-sliding coating film or a short fiber planted.

In the present invention of claim 7, since the glass run main body portion, the vehicle interior seal lip and the vehicle exterior seal lip are formed of synthetic rubber, they are rich in elasticity and can easily absorb the vibration of the door glass. . In addition, the door glass is hardly deformed even when used for a long time, and the door glass can be reliably sealed for a long time.
The low sliding member on the inner seal lip, the outer seal lip surface, and the inner surface of the bottom wall is formed of a low sliding coating or a short fiber that has been planted. In this case, the coating is easy and the glass run main body has good adhesion to the synthetic rubber. When the low-sliding member is made of short fibers with flocking, the surface feels good, and the short fibers that have been flocked with dust or sand particles adhering to the door glass surface can move up and down smoothly. Can do.

  The present invention according to claim 8 is an automotive glass run in which a low sliding member is provided at a portion where the vehicle outer side extended lip and the vehicle inner side extended lip abut on the inner surfaces of the vehicle outer side wall and the vehicle inner side wall.

  In the present invention of claim 8, when the door glass pushes the vehicle outer side seal lip toward the vehicle outer side wall and the front end of the vehicle outer extended lip contacts the vehicle outer side wall, the front end of the vehicle outer extended lip is It is easy to slide the surface of the low-sliding member that has been treated to reduce the sliding resistance of the inner surface of the vehicle outer side wall. Further, when the door glass pushes the tip of the vehicle inner seal lip and the tip of the vehicle inner extension lip slides on the inner surface of the vehicle inner side wall and comes into contact with the bottom wall projection of the bottom wall, the vehicle inner extension lip Generation of abnormal noise that slides can be prevented.

The present invention extends the vehicle outer side extending lip and the vehicle inner side extending lip by bending the vehicle outer side extending lip and the vehicle inner side extending lip from the tips of the vehicle outer side sealing lip and the vehicle inner side side sealing lip, respectively. And the vehicle interior extension lip are curved so as to protrude toward the vehicle exterior side wall and the vehicle interior side wall, respectively, so that when the door glass is inserted into the glass run body, the vehicle exterior seal lip A substantially triangular-shaped pseudo hollow portion is formed by the vehicle-side extended lip and the vehicle-side inner side wall. Similarly, a substantially triangular-shaped pseudo hollow portion is formed by the vehicle-side seal lip, the vehicle-side extended lip, and the vehicle-side side wall. Thus, the door glass can be securely and elastically held at the tips of the vehicle outer seal lip and the vehicle inner seal lip.
In addition, since the vehicle outer extension lip and the vehicle inner extension lip are curved so as to protrude toward the vehicle outer side wall and the vehicle inner side wall, respectively, the door glass has the vehicle outer seal lip and the vehicle inner seal lip. When pushed, the vehicle outer extension lip and the vehicle inner extension lip tend to bend and easily absorb the vibration of the door glass.

  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 channel 3 to guide the raising and lowering of the door glass 5 and to seal between the door glass 5 and the door frame 2. doing.

First, the first embodiment will be described with reference to FIGS. 1 and 2.
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 extruded portion includes a portion attached to the upper side of the door frame 2, a portion attached to the rear side vertical side of the door frame 2, and a portion attached to the front side vertical side of the door frame 2. The mold forming part connects these extrusion-molded parts so as to have a shape corresponding to the door frame 2, and is a part to be attached to a corner part of the door frame 2.

The cross-sectional shape of the extrusion molding part attached to the vertical side of the door frame 2 is shown in FIG. FIG. 1 is a cross-sectional view taken along line AA in FIG. FIG. 1 shows a state in which the door glass 5 is located near the center of the interior of the glass run body 11, and FIG. 2 shows a state in which the door glass 5 is located on the outside of the glass run body 11.
FIG. 2 is a cross-sectional view taken along line AA in FIG. 5 when the glass run 10 is attached to the door frame 2. The glass run main body 11 composed of the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40 is formed in a substantially U-shaped cross section. 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 having a substantially U-shaped cross section, and a vehicle outer side cover lip 21 extends from the front end of the vehicle outer side wall 20. It extends outside the car.

As shown in FIG. 2, when the glass run 10 is attached to the channel 3 of the door frame 2, the vehicle outer side wall of the channel 3 contacts the outer surface of the vehicle outer side wall 20. The vehicle exterior side wall 20 is held by the vehicle exterior cover lip 21 and the first vehicle exterior retention lip 22 to attach the vehicle exterior side wall 20, and the second vehicle exterior retention lip 23 abuts against the inner surface of the channel 3. In addition, the gap between the glass run 10 and the channel 3 is sealed.
The inner surface of the channel 3 abuts on the vehicle inner side holding protrusion 32 of the vehicle inner side wall 30. A vehicle interior cover lip 31 and a vehicle interior holding lip 33 are provided on the outer surface of the vehicle interior side wall 30. The vehicle inner side cover lip 31 and the vehicle inner side holding lip 33 hold the vehicle inner side wall of the channel 3 to attach the vehicle inner side wall 30 and seal between the glass run 10 and the channel 3.
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 have a substantially U-shaped cross section, and the outer surface thereof is in contact with the inner surface of the channel 3 and is stably held. The

  The vehicle outer side seal lip 50 extends from the front end of the vehicle outer side wall 20 in an internal direction having a substantially U-shaped cross section of the glass run main body 11. A thin wall portion may be provided at the inner root portion of the vehicle exterior seal lip 50 with the vehicle exterior side wall 20. When the thin portion is provided, the vehicle outer side seal lip 50 is easily bent. On the surfaces of the vehicle outer side seal lip 50 and the vehicle outer side cover lip 21, low sliding members are continuously provided, and a vehicle outer side seal lip low sliding surface 51 is formed. In the embodiment shown in FIGS. 1 and 2, a material harder than the material constituting the glass run main body 11 is used for the vehicle exterior seal lip low sliding surface 51 as described later.

  A vehicle outer extension lip 55 extends from the tip of the vehicle outer seal lip 50. The vehicle outer extending lip 55 is formed by bending from the front end of the vehicle outer seal lip 50 toward the vehicle outer side wall 20, and the bent portion becomes the vehicle outer seal lip bent portion 52. The vehicle outer side extending lip 55 is curved so as to be curved as a whole and is formed to be convex toward the vehicle outer side wall 20. The length of the outside extension lip 55 is such that when the end portion of the door glass 5 is inserted into the glass run body 11, the outside extension lip is even when the door glass 5 is swung to the innermost side. The length of 55 is set to such a length that it can contact the inner surface of the vehicle outer side wall 30. Thus, when the door glass 5 is inserted into the glass run main body 11, a substantially triangular pseudo hollow portion is reliably formed by the vehicle outer side seal lip 50, the vehicle outer side extending lip 55 and the vehicle outer side wall 20. be able to.

  It is preferable that the front end of the vehicle outer side extending lip 55 can abut on the boundary portion between the bottom wall projection 44 and the inner surface of the vehicle outer side wall 20. Thereby, when the door glass 5 is displaced to the vehicle outer side, the movement of the tip of the vehicle outer extending lip 55 is restricted, and the space between the vehicle outer side wall 20, the vehicle outer sealing lip 50 and the vehicle outer extending lip 55 is restricted. It is possible to hold the space, and the door glass 5 can be elastically held by the vehicle outer side seal lip 50. For this reason, the vibration of the door glass 5 can be elastically and reliably absorbed.

Further, since the vehicle exterior extending lip 55 holds the tip of the vehicle exterior seal lip 50, the substantially hollow apex of the pseudo hollow portion, that is, the vehicle exterior seal lip bent portion 52 is in line contact with the side surface of the door glass 5. The door glass 5 and the glass run 10 can be sealed. For this reason, the raising / lowering of the door glass 5 can be performed smoothly. Moreover, since the low sliding member is provided on the surface of the vehicle outer side seal lip 50 as described above, the door glass 5 can be moved up and down more smoothly.
In addition, a low sliding member is provided in a portion where the tip of the vehicle outer side extending lip 55 slides on the inner surface of the vehicle outer side wall 20. For this reason, sliding of the front-end | tip of the vehicle outer side extension lip 55 becomes smooth.

When the door glass 5 vibrates, the vehicle outer extension lip 55 is formed thinner than the vehicle outer seal lip 50 and is curved convexly toward the vehicle outer side wall 20. However, the vehicle-side extending lip 55 is easily bent and can be easily deformed to absorb vibrations. Further, since the vehicle exterior seal lip 50, the vehicle exterior extension lip 55, and the vehicle exterior side wall 20 can form a substantially triangular pseudo hollow portion, the pseudo hollow portion is elastically deformed, and the door glass 5 And a predetermined holding force can be secured.
Further, since the vehicle exterior seal lip 50 is smaller than the vehicle interior seal lip 60, the door glass 5 is likely to be located outside the vehicle inside the glass run body 11.

  The vehicle interior seal lip 60 extends from the front end of the vehicle interior side wall 30 in an internal direction having a substantially U-shaped cross section of the glass run main body 11. Similar to the vehicle outer side seal lip 50, a thin portion may be provided at the inner base portion of the vehicle inner side seal lip 60 with the vehicle inner side wall 30. When the thin wall portion is provided, the vehicle interior seal lip 60 is easily bent. On the surfaces of the vehicle interior seal lip 60 and the vehicle interior cover lip 31, a vehicle interior seal lip low sliding surface 61 made of a low sliding member is formed continuously. In the embodiment shown in FIGS. 1 and 2, a material harder than the material constituting the glass run main body 11 is used for the vehicle interior seal lip low sliding surface 61 as described later.

  An inboard extension lip 65 is extended from the front end of the inboard seal lip 60. The vehicle interior extending lip 65 is formed by bending from the front end of the vehicle interior seal lip 60 toward the vehicle interior side wall 30, and the bent portion becomes the vehicle interior seal lip bent portion 62. The vehicle interior extension lip 65 is formed so as to be curved in a bow shape as a whole and to be convex toward the vehicle interior side wall 30. The length of the vehicle interior extending lip 65 is preferably such a length that the tip of the vehicle interior extending lip 65 can come into contact with the boundary portion between the vehicle interior side wall 30 and the bottom wall 40. As a result, when the door glass 5 is inserted into the glass run body 11, a substantially triangular pseudo hollow portion is reliably formed by the vehicle interior seal lip 60, the vehicle interior extension lip 65 and the vehicle interior side wall 30. be able to.

When the door glass 5 is inserted into the glass run main body 11, the substantially triangular apex of the pseudo hollow portion, that is, the vehicle interior seal lip bent portion 62 contacts the side surface of the door glass 5 in line contact. It is possible to seal between the door glass 5 and the glass run 10 in contact. For this reason, the raising / lowering of the door glass 5 can be performed smoothly. Moreover, since the low sliding member is provided on the surface of the vehicle interior seal lip 60 as described above, the door glass 5 can be moved up and down more smoothly.
Similarly, a low sliding member is provided at a portion of the inner surface of the vehicle inner side wall 30 where the tip of the vehicle inner extending lip 65 slides. For this reason, the sliding of the front end of the vehicle interior extending lip 65 is smooth.

  When the door glass 5 vibrates, the vehicle interior extending lip 65 is thinner than the vehicle interior seal lip 60 and is curved convexly toward the vehicle interior side wall 30. However, the vehicle interior extending lip 65 is easily bent and can be easily deformed to absorb vibrations. In addition, since the vehicle interior seal lip 60, the vehicle interior extension lip 65, and the vehicle interior side wall 30 can form a substantially triangular pseudo hollow portion, the pseudo hollow portion is elastically deformed, and the door glass 5 A predetermined holding force for holding can be secured.

In addition, as shown in FIG. 2, the door glass 5 is provided on the outside of the vehicle because it reduces the step with the outer surface of the door panel, smoothes the air flow, and has a good appearance. It is preferred that
When the door glass 5 approaches the vehicle interior side, the vehicle interior extending lip 65 is bent or compressed to absorb the displacement and vibration of the door glass 5.

  On the inner surface of the bottom wall 40, a bottom wall low sliding surface 42 formed of a low sliding member is formed. When the door glass 5 moves up and down, the tip of the door glass 5 comes into contact with the bottom wall low sliding surface 42 and can be moved up and down smoothly, so that no abnormal noise is generated. The bottom wall low sliding surface 42 is provided with a plurality of bottom wall low sliding surface grooves 43 in the longitudinal direction. Even if dust or dust adheres to the bottom wall low sliding surface 42 by the bottom wall low sliding surface groove 43, it can be discharged.

A bottom wall protrusion 44 bulging along the vehicle inner side wall 30 and the vehicle outer side wall 20 is formed at the side end in the width direction of the bottom wall low sliding surface 42. The bottom wall protrusion 44 has a flat surface that contacts the vehicle inner side wall 30 and the vehicle outer side wall 20, and when the glass run 10 is mounted in the channel 3, the vehicle inner side wall 30 and the vehicle outer side wall 20, respectively. By abutting and supporting, the vehicle inner side wall 30 and the vehicle outer side wall 20 can be prevented from falling into the inside of the glass run main body portion 11, and the glass run main body portion 11 can maintain a substantially U-shaped cross section.
Car exterior side walls 20 and vehicle interior side walls 30 and bottom wall 40 are provided with vehicle exterior groove portions 41 and 41 respectively. The vehicle outer side walls 20 and the vehicle inner side wall 30 can be flexibly bent with respect to the bottom wall 40 by the vehicle outer side groove portions 41, 41, and the glass run 10 can be easily fitted into the channel 3 of the door frame 2. .

  When the bottom wall projection 44 is provided on the bottom wall 40, when the door glass 5 is inserted into the glass run main body 11, the tip of the vehicle interior extension lip 65 is connected to the bottom wall projection 44 and the vehicle interior side wall. 30, that is, in contact with the bent portion of the inner side wall 30 and the bottom wall 40, the tip of the vehicle inner extension lip 65 can be more reliably held by the bottom wall protrusion 44. For this reason, the substantially triangular pseudo hollow portion formed by the vehicle interior seal lip 60, the vehicle interior extension lip 65, and the vehicle interior side wall side 30 can be configured more reliably, and the door glass 5 vibrates. In addition, the pseudo hollow portion can be prevented from being crushed.

As described above, the vehicle inner seal lip low sliding surface 61, the vehicle outer seal lip low sliding surface 51, and the bottom wall low sliding surface 42 are formed of a low sliding member. Further, the vehicle inner side wall low sliding surface 34 and the vehicle outer side wall low sliding surface 24 are also constituted by low sliding members.
In the embodiment shown in FIGS. 1 and 2, the low sliding member is formed of a thermoplastic elastomer harder than the thermoplastic elastomer forming the glass run main body 11. The glass run main body 11 is formed of a thermoplastic elastomer that is softer than the low sliding member. When this thermoplastic elastomer is an olefin-based thermoplastic elastomer, for example, a harder thermoplastic elastomer having a rubber content of EPDM of 40% and a resin content of polypropylene of 60% is used. In the case of the above thermoplastic elastomer, for example, a rubber component having 70% EPDM and a resin component having 30% polypropylene can be used.
When the glass run body 11 or the like is formed of a thermoplastic elastomer, as described above, it is superior in terms of productivity and weight reduction and slightly inferior to that of rubber in terms of sagability. However, since this weak point can be overcome by using the pseudo hollow portion as described above, the present invention is particularly effective in a glass run made of a thermosetting elastomer.

Next, a second embodiment will be described based on FIG. 3 and FIG.
The basic form of the second embodiment is the same as that of the first embodiment, but the constituent materials are different. Description of the same parts as those of the first embodiment is omitted, and different parts will be described.
In the second embodiment, the glass run main body 11, the vehicle exterior seal lip 50, and the vehicle interior seal lip 60 are made of EPDM, which is a synthetic rubber. The vehicle interior seal lip low sliding surface 61, the vehicle exterior seal lip low sliding surface 51, the vehicle interior side wall low sliding surface 34, and the vehicle exterior side wall low sliding surface 24 are coated with a low sliding property such as urethane paint. To do.

The bottom wall low sliding surface 42 performs application of urethane paint or planting of nylon short fibers or the like. At that time, both side ends of the bottom wall 40 in the width direction are formed so that the bottom wall 40 is raised to form the bottom wall protrusions 44 in order to prevent the vehicle outer side wall 20 and the vehicle inner side wall 30 from falling. The tip of the vehicle interior extending lip 65 comes into contact with the bottom wall projection 44, and a substantially triangular pseudo hollow portion is formed by the vehicle interior seal lip 60, the vehicle interior extending lip 65, and the vehicle interior side wall 30. .
The low-sliding member can be used as long as it has a low frictional resistance with the door glass 5 other than urethane paint. For example, a TPO sheet, a fluororesin non-woven cloth, a polyethylene sheet, a silicon coat Etc. can be used.

  Next, the manufacturing method of the glass run 10 of this invention is demonstrated. First, the glass run 5 is formed by extruding a linear portion. Extrusion molding 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 front end portion which is a substantially U-shaped opening is slightly opened. As a result, the front end of the vehicle outer side extension lip 55 is separated from the vehicle outer side wall 20, and the front end of the vehicle inner side extension lip 65 is separated from the vehicle inner side wall 30. Each can be extruded without being hollow. As a result, it is possible to avoid extruding the hollow seal lip.

When a hollow seal lip is formed by extrusion, air of a predetermined pressure is controlled from the extrusion die to the hollow portion in order to prevent the hollow portion from becoming negative pressure and crushing during extrusion molding. However, in this application, since the lip-shaped shape is extrusion-molded, it is not necessary and the productivity is good.
In addition, a pressing force on the side wall of the channel 3 is obtained when the channel 3 is mounted. Further, when the low sliding member is applied to the vehicle outer side wall 20, the vehicle inner side wall 30, the bottom wall 40, the vehicle outer side seal lip 50, and the vehicle inner side seal lip 60, the operation becomes easy.

  Synthetic rubber, thermoplastic elastomer, and soft synthetic resin are used as the molding material. For example, EPDM rubber is used for synthetic rubber, polyolefin 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. After that, it is cut to a predetermined length, and the extruded part is completed.

  Next, the molding part to be mounted on the corner portion of the door frame 2 is molded by sandwiching the end of the extrusion molding part manufactured as described above with a mold for molding the molding part, A solid material that forms a molded part is injected into the tee. 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.

It is sectional drawing of the glass run which is embodiment of this invention, and shows the state in which a door glass is located in the center part of a glass run main-body part. It is sectional drawing of the glass run with which the channel which is embodiment of this invention was mounted | worn, and shows the state in which a door glass is located in the vehicle outer side of a glass run main-body part. It is sectional drawing of the glass run which is other embodiment of this invention, and shows the state in which a door glass is located in the center part of a glass run main-body part. It is sectional drawing of the glass run with which the channel which is other embodiment of this invention was mounted | worn, and the state in which a door glass is located in the vehicle outer side of a glass run main-body part is shown. It is a side view of a motor vehicle door. It is the cross-sectional shape of the conventional glass run.

Explanation of symbols

2 Door frame 5 Door glass 10 Glass run 11 Glass run main body 20 Car outer side wall 30 Car inner side wall 34 Car inner side wall low sliding surface 40 Bottom wall 42 Bottom wall low sliding surface 44 Bottom wall protrusion 50 Car outer seal lip 55 Car interior extension lip 60 Car interior seal lip 61 Car interior seal lip Low sliding surface 62 Car interior seal lip bent part 65 Car interior extension lip

Claims (8)

For automobiles that are attached to the inner periphery of the door frame of an automobile door, guide the raising and lowering of the door glass, and have a glass run main body having a substantially U-shaped cross section comprising an outer side wall, an inner side wall, and a bottom wall. In the glass run,
The vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side seal lip and a vehicle inner side seal lip extending toward the inside of the glass run main body having a substantially U-shaped cross section. Sealing the vehicle outer side surface and the vehicle inner side surface of both side ends of the door glass inserted inside the glass run main body by the inner seal lip,
The outside extension lip is bent and extended from the front end of the vehicle outside seal lip toward the outside side wall, and the inside extension lip is bent from the end of the inside seal lip toward the inside wall side. And extend
The glass run for automobiles, wherein the vehicle exterior extending lip and the vehicle interior extending lip are curved so as to protrude toward the vehicle outer side wall and the vehicle inner side wall, respectively.   When the door glass is inserted into the glass run main body, the front end of the vehicle outer extension lip contacts the inner surface of the vehicle outer side wall, and the front end of the vehicle inner extension lip is in contact with the bottom wall projection. The glass run for automobiles according to claim 1, wherein the glass run is in contact with a boundary portion with the inner surface of the vehicle inner side wall.   When the door glass inserted into the glass run main body portion is displaced toward the inside of the vehicle, the vehicle outer side extending lip abuts the tip of the vehicle outer side extending lip against the inner surface of the vehicle outer side wall, and the door The glass for an automobile according to claim 1 or 2, wherein when the glass is displaced to the vehicle outer side, a tip end of the vehicle outer extending lip is brought into contact with a boundary portion between the bottom wall projection and an inner surface of the vehicle outer side wall. run.   The glass run for automobiles according to any one of claims 1 to 3, wherein a low sliding member is provided on a surface of the vehicle interior seal lip, a surface of the vehicle exterior seal lip, and an inner surface of the bottom wall.   The glass for automobiles according to any one of claims 1 to 4, wherein a thickness of the vehicle outer extension lip and a vehicle inner extension lip is thinner than a thickness of the vehicle outer seal lip and vehicle inner seal lip, respectively. run.   The glass run main body, the vehicle interior seal lip, and the vehicle exterior seal lip are formed of a thermoplastic elastomer, and are low sliding members on the surfaces of the vehicle interior seal lip and vehicle exterior seal lip and the inner surface of the bottom wall. The glass run for automobiles according to claim 4 or 5, wherein the glass run body is formed of a thermoplastic elastomer having a hardness higher than that of the thermoplastic elastomer of the glass run body.   The glass run body, the vehicle interior seal lip, and the vehicle exterior seal lip are formed of synthetic rubber, and the vehicle interior seal lip, the surface of the vehicle exterior seal lip, and the low sliding member on the inner surface of the bottom wall are The glass run for automobiles according to claim 4 or 5, wherein the glass run is formed of a low-sliding coating film or a short fiber that is flocked.   The low sliding member is provided in the part which the said vehicle outside extending lip and vehicle interior extending lip contact | abut on the inner surface of the said vehicle outer side wall and the vehicle inner side wall, respectively. Glass run for automobiles.

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