JP2011225205A - Glass run for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass run which achieves big effect in reducing weight, is excellent in assembly workability to a door frame and holding force, and is capable of exhibiting sufficient durability even when elevating a door glass.SOLUTION: The glass run 10 is provided with vehicle external side holding lips 23, 24 and vehicle internal side holding lips 33, 34 which engage with concave sections 6a, 7a of door frames 2, respectively, on the outer surface that faces the door frames 2 of a vehicle external side wall 20 and a vehicle internal side wall 30. The vehicle external side wall 20, the vehicle internal side wall 30, and a bottom wall 40 of the glass run 10 are formed of a thermoplastic elastomer sponge material and at least one of the vehicle external side holding lips 23, 24 and the vehicle internal side holding lips 33, 34 is formed of a thermoplastic elastomer solid material or a fine foaming material.

Description

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

  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 door 1 of the automobile. The entire conventional glass run 110 is shown in FIG. 4, and each of the conventional glass runs 110 is attached to the straight portion of the door frame 2, or the glass run is shown in FIGS. 6 to 9. .

Conventionally, as shown in FIG. 5, the glass run 110 is attached in the channel of the door frame 2 to guide the raising and lowering of the door glass 5 and to seal between the door glass 5 and the door frame 2. Further, as shown in FIG. 4, the glass run 110 includes a glass run upper side portion 113 attached to the upper side portion of the door frame 2 and a glass run rear side vertical side portion 114 attached to the rear side vertical side portion of the door frame 2. And the glass run front side vertical part 115 attached to the front side vertical side part of the door frame 2, the glass run upper side part 113 and the glass run rear side vertical side part 114 or the glass run front side vertical side part 115. The glass run corner portion 112 is formed.
The glass run upper side portion 113, the glass run rear side vertical side portion 114, and the glass run front side vertical side portion 115 constitute a straight portion 111 formed by extrusion molding.

  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. 6, the straight portion 111 of 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. 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 103 provided in the door frame 2, and the vehicle outer side holding lip 124 formed on the outer surface of each wall and the vehicle inner side. A holding lip 134 is engaged with the inner surface of the channel 103 to hold the glass run 110. As shown in FIG. 6, the channel 103 may be formed by bending the door frame 2 or may be fitted with a channel formed by another member.

The door glass 5 slides on the inside of the main body of the glass run 110 with a substantially U-shaped cross section, and both side surfaces of the end portion of the door glass 5 are sealed by the vehicle exterior seal lip 121 and the vehicle interior seal lip 131. (For example, refer to Patent Document 1).
In addition, when the glass run 110 is mounted in the channel 103, the straight side portion of the glass run 110 is held on the vehicle inner side wall 130 and the vehicle outer side wall 120 in order to lock and hold the glass run 110 in the channel 103. A vehicle inner side holding lip 134 and a vehicle outer side holding lip 124 are respectively provided.

  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 made of a solid material of ordinary rubber or synthetic resin and have a large specific gravity. Also, the vehicle outer side seal lip 121 and the vehicle inner side wall Some of the seal lips 131 are kneaded with a magnetic material. For this reason, the overall weight of the glass run 110 is increased, which is contrary to the recent demand for weight reduction of vehicles.

  Therefore, as shown in FIG. 7, the vehicle outer side wall 220, the vehicle inner side wall 230, and the bottom wall 240 are formed of foamed thermoplastic elastomer, and the seal lips 221 and 231 and the cover lips 222 and 232 are formed of solid thermoplastic elastomer. There is a glass run 210 (see, for example, Patent Document 2). However, since most of the glass run 210 is formed of a foamed thermoplastic elastomer, when the glass run 210 is attached to the door frame 2 and the door glass 5 is raised and lowered, the vehicle outer side wall 220, the vehicle inner side wall 230, and the bottom wall are arranged. The rigidity of 240 was not sufficient and the durability was not sufficient. Further, since the vehicle inner side holding lip 234 and the vehicle outer side holding lip 224 are also formed of foamed thermoplastic elastomer, the engagement force with the door frame 2 is not sufficient.

  Further, as shown in FIG. 8, the outer side wall 320, the inner side wall 330, the bottom wall 340, the seal lips 321 and 331, and the cover lips 322 and 332, which are the entire glass run 310, are formed of a fine foam solid material. There is a glass run 310 (see, for example, Patent Document 3). However, in this case, since it was made of a finely foamed solid material, the specific gravity did not decrease so much, and there was a problem that sufficient weight reduction could not be achieved.

  Therefore, as shown in FIG. 9, in the glass run 410 attached to the upper side of the door frame 2, the vehicle interior side wall 430, the bottom wall 440, the vehicle interior seal lip 431, and the vehicle interior cover lip 432 are formed of sponge material. The outer side wall 420, the vehicle outer side seal lip 421, and the vehicle outer side cover lip 422 include a glass run 410 formed of a solid material or a fine foam solid material (see, for example, Patent Document 4). However, since the thickness of the vehicle interior holding lip 433 is increased in order to improve the engagement force with the door frame 2, the workability of assembling to the door frame 2 is reduced.

  Further, when the vehicle exterior holding lip 423 is formed of a sponge material, it is necessary to increase the wall thickness as described above. In this case, it does not fit in the narrow space of the channel 3, and the level difference with the door glass 5 becomes large, the appearance is lowered, and wind noise increases.

JP 2005-349869 A JP 2005-88328 A JP 2009-120048 A JP 2009-56924 A

  Therefore, the present invention has an object of providing a glass run that has a large effect of weight reduction, is excellent in workability and holding power for assembling to a door frame, and can exhibit sufficient durability even when the door glass is raised and lowered. It is said.

In order to solve the above-mentioned problem, the present invention of claim 1 is attached to the inner periphery of a door frame of an automobile door, and in an automotive glass run for guiding the raising and lowering of the door glass
The main body of the glass run has a substantially U-shaped cross section consisting of a vehicle outer side wall, a vehicle inner side wall, and a bottom wall, and each of the vehicle outer side wall and the vehicle inner side wall has a substantially U-shaped cross section inside the main body. A vehicle outer side seal lip and a vehicle inner side seal lip extending toward the vehicle side, and the vehicle outer side seal lip and the vehicle inner side seal lip are used to seal the vehicle outer side surface and the vehicle inner side surface at the end of the door glass,
On the outer surface of the vehicle outer side wall and the vehicle inner side wall facing the door frame, an outer vehicle holding lip and a vehicle inner holding lip that engage with the recess of the door frame are provided,
The glass run has a car outer side wall, a car inner side wall, and a bottom wall formed of a thermoplastic elastomer sponge material.
At least one of the vehicle outer side holding lip and the vehicle inner side holding lip is an automotive glass run formed of a thermoplastic elastomer solid material or a fine foam material.

  In the first aspect of the present invention, the glass run main body has a substantially U-shaped cross section including an outer side wall, an inner side wall, and a bottom wall. An outside seal lip and an inside seal lip extending toward the inside of the substantially U-shaped body are provided, and the outside surface and inside surface of the door glass are sealed by the outside seal lip and the inside seal lip. ing.

  For this reason, when the door is closed, the glass runner has a substantially U-shaped cross section of the main body including the vehicle outer side wall, the vehicle inner side wall, and the bottom wall at the glass run upper side, the glass run rear vertical side, and the glass run front vertical side. The tip of the door glass can be stored inside the run, and the door glass can be securely held. Also, at the upper side of the glass run and the vertical side of the glass run, both the seal lip abuts against the door glass as the door glass moves up and down by the vehicle outer seal lip and the vehicle inner seal lip, An inner seal lip can provide a seal between the door frame and the door glass.

  A vehicle outer side holding lip and a vehicle inner side holding lip are provided on the outer surfaces of the vehicle outer side wall and the vehicle inner side wall facing the door frame, respectively. For this reason, when the glass run is fitted into the door frame, the vehicle outer side holding lip and the vehicle inner side holding lip are engaged with the concave portion of the door frame, and the glass run can be held with difficulty.

  In the glass run, the outer side wall, the inner side wall, and the bottom wall of the glass run are made of a thermoplastic elastomer sponge material. Therefore, a large portion of the volume of the glass run is made of a sponge material with a low specific gravity. It can be formed, the overall weight of the glass run can be greatly reduced, and it can contribute to the weight reduction of the vehicle.

  Since at least one of the vehicle outer side holding lip and the vehicle inner side holding lip is formed of a solid material or a fine foam material of thermoplastic elastomer, the vehicle outer side holding lip or the vehicle inner side holding lip formed of a solid material or a fine foam material or the The force with which both engage with the door frame is increased, and the glass run can be securely held on the door frame. Furthermore, compared to the case of forming with a sponge material, the vehicle outer side holding lip and / or the vehicle inner side holding lip formed of a solid material or a fine foam material can be formed smaller, and the operation of assembling the glass run on the door frame Is easy. Also, the vehicle outer side holding lip and the vehicle inner side holding lip are formed smaller than the case where the vehicle outer side holding lip and the vehicle inner side holding lip are formed of a sponge material. It is possible to reduce the step between the holding lip and the door glass, thereby improving the appearance or reducing the wind noise.

  According to the second aspect of the present invention, the vehicle outer side holding lip is formed of a thermoplastic elastomer solid material or a fine foam material, and the vehicle inner side holding lip is a glass run for automobiles formed of a thermoplastic elastomer sponge material. .

  In the second aspect of the present invention, the vehicle outer side holding lip is formed of a thermoplastic elastomer solid material or a fine foam material, and the vehicle inner side holding lip is formed of a thermoplastic elastomer sponge material. While maintaining the holding force, the vehicle exterior holding lip can be made smaller, the vehicle exterior of the door frame can be made thinner, the step with the door glass can be made smaller, the appearance can be improved, and the wind noise can be reduced. it can.

  According to a third aspect of the present invention, the vehicle outer side holding lip and the vehicle inner side holding lip are a glass run for automobiles formed of a thermoplastic elastomer solid material or fine foam material.

  According to the third aspect of the present invention, since the vehicle outer side holding lip and the vehicle inner side holding lip are formed of a thermoplastic elastomer solid material or a fine foam material, the vehicle outer side holding lip and the vehicle inner side holding lip can be made small. The force for holding the door frame is improved, and on the outside of the vehicle, the step between the glass run and the door glass can be reduced to improve the appearance or reduce the wind noise. On the vehicle interior side, the protrusion of the door frame to the vehicle interior side can be reduced to improve the appearance.

  According to the present invention of claim 4, at least one of the vehicle outer side holding lip and the vehicle inner side holding lip is formed of a thermoplastic elastomer solid material or a fine foam material, and is formed of a thermoplastic elastomer solid material or a fine foam material. A vehicle glass run in which a portion of the vehicle outer side wall and the vehicle inner side wall adjacent to the root of at least one of the vehicle outer side holding lip and the vehicle inner side holding lip formed of a solid material or a fine foam material of thermoplastic elastomer is used.

  According to the present invention of claim 4, at least one of the vehicle outer side holding lip and the vehicle inner side holding lip is formed of a thermoplastic elastomer solid material or a fine foam material, and is formed of a thermoplastic elastomer solid material or a fine foam material. A portion of the vehicle outer side wall and the vehicle inner side wall adjacent to the roots of at least one of the vehicle outer side holding lip and the vehicle inner side holding lip formed of a solid material or a fine foam material of a thermoplastic elastomer. Therefore, even if at least one vehicle outer side holding lip and vehicle inner side holding lip formed of a solid material or a fine foam material of thermoplastic elastomer are subjected to deformation stress, at least one vehicle outer side holding lip and vehicle inner side holding lip are It is firmly held by the vehicle outer side wall or the vehicle inner side wall and is not easily deformed, and the force for holding the glass run on the door frame is increased.

  According to a fifth aspect of the present invention, at least one of the vehicle outer side holding lip and the vehicle inner side holding lip formed of a thermoplastic elastomer solid material or fine foam material has an angle formed with at least one of the vehicle outer side wall and the vehicle inner side wall. The glass run for automobiles has an acute angle of less than 45 degrees and has a tapered tip.

  In the present invention of claim 5, the vehicle outer side holding lip and the vehicle inner side holding lip form an acute angle of less than 45 degrees with at least one of the vehicle outer side wall and the vehicle inner side wall, and the tip thereof is tapered. When mounting to the door frame, it can be fitted into the recess of the flange of the door frame with little resistance, and after engaging with the recess of the flange, at least one of the vehicle outer side holding lip or the vehicle inner side holding lip is detached from the flange. It becomes difficult. Since the tip is tapered, it can be brought into close contact according to the shape of the door frame and has good sealing properties.

  According to the sixth aspect of the present invention, on the vehicle outer side wall and the vehicle inner side wall, a vehicle outer side cover lip and a vehicle inner side cover that extend along the vehicle outer side wall and the vehicle inner side wall on the outer side of the substantially U-shaped cross section of the main body, respectively. The vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip, and the vehicle inner seal lip are automotive glass runs formed of a thermoplastic elastomer solid material or fine foam material.

  According to the present invention of claim 6, the vehicle outer side wall and the vehicle inner side wall are respectively provided on the vehicle outer side wall and the vehicle inner side wall with an outer side cover lip and a vehicle inner side cover extending along the vehicle outer side wall and the vehicle inner side wall, respectively. A lip is provided. For this reason, the vehicle outer side flange portion of the door frame is held by the vehicle outer side wall and the vehicle outer side cover lip, and the glass run door is held by holding the vehicle inner side flange portion of the door frame by the vehicle inner side wall and the vehicle inner side cover lip. Can be held on the frame. In addition, the outer cover lip and the inner cover lip cover the outer surface of the door frame to improve the appearance.

  The vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip, and the vehicle inner seal lip were formed of a solid material or a fine foam material of a thermoplastic elastomer. Therefore, when the rigidity of the vehicle outer seal lip, vehicle inner seal lip, vehicle outer cover lip and vehicle inner cover lip is improved, the door glass moves up and down in the glass run and enters the glass run main body. Further, the outer side wall and the inner side wall of the door glass are not abnormally deformed by sliding friction due to the front end of the door glass, durability can be ensured, and the glass run does not jump out of the door frame. Further, since it is a thermoplastic elastomer solid material or a micro-foamed solid material, the surface is smooth and the outer surface of the door frame is covered, which is preferable in terms of design.

  According to the present invention of claim 7, the vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side cover lip and a vehicle inner side cover that extend along the vehicle outer side wall and the vehicle inner side wall on the outer side of the main body. The vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip, and the vehicle inner seal lip are automotive glass runs formed of a thermoplastic elastomer sponge material.

  In the present invention of claim 7, the vehicle outer side wall and the vehicle inner side wall are respectively provided with a vehicle outer side cover lip and a vehicle inner side cover that extend along the vehicle outer side wall and the vehicle inner side wall on the outer side of the substantially U-shaped cross section of the main body. Lips were provided, and the vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip and the vehicle inner seal lip were formed of a thermoplastic elastomer sponge material. For this reason, the weight of a glass run can be reduced and it can contribute to the weight reduction of a motor vehicle.

  The present invention according to claim 8 is the glass run for automobiles, wherein the thermoplastic elastomer sponge material has a specific gravity of 0.6 to 0.8.

  In the present invention of claim 8, the inner side wall and the bottom wall, etc., which are large portions of the volume of the entire glass run, are formed of a sponge material having a specific gravity of 0.6 to 0.8. Therefore, the specific gravity is small, and the weight of the entire glass run can be greatly reduced. When the specific gravity is less than 0.6, the rigidity of the glass run is lowered, and the door glass may be detached from the door frame when the door glass is raised or lowered. When the specific gravity exceeds 0.8, the effect of weight reduction is small.

  The present invention according to claim 9 is the glass run for automobiles in which the thermoplastic elastomer solid material or the micro-foamed solid material has a specific gravity of 0.8 to 1.2.

  In the present invention of claim 9, since the specific gravity of the thermoplastic elastomer solid material or the micro-foamed solid material is 0.8 to 1.2, the rigidity is maintained without greatly increasing the weight of the solid material portion. can do. When the specific gravity is less than 0.8, the rigidity is not sufficient, and when the specific gravity exceeds 1.2, the weight increase becomes large.

  A tenth aspect of the present invention is a glass run for automobiles in which a low sliding member layer is formed on the surfaces of a vehicle outer seal lip, a vehicle inner seal lip, and a bottom wall.

  In the present invention of claim 10, since the low sliding member layer is formed on the surfaces of the vehicle outer seal lip, the vehicle inner seal lip, and the bottom wall, the door glass rises and enters the main body of the glass run. Even if it contacts or slides, the frictional resistance between the door glass and the bottom wall can be reduced, adhesion can be prevented, and the door glass can be smoothly moved up and down to prevent the generation of abnormal noise.

  The present invention of claim 11 is an automotive glass run in which the vehicle inner side wall and the vehicle inner side seal lip of the glass run are larger than the vehicle outer side wall and the vehicle outer side seal lip, respectively, and are formed thick.

  In the present invention of claim 11, since the vehicle inner side wall and the vehicle inner side seal lip of the glass run are larger and thicker than the vehicle outer side wall and the vehicle outer side seal lip, respectively, the door glass can be securely held, The door glass can be positioned in the vehicle exterior direction, the step between the door glass and the door frame can be reduced, the wind noise can be reduced, and the appearance can be improved. Further, the area outside the door frame or door molding can be reduced, which is preferable in terms of design.

  The invention according to claim 12 is the glass run for automobiles in which the thermoplastic elastomer is a dynamically crosslinked thermoplastic elastomer (TPV).

  According to the present invention of claim 12, since the thermoplastic elastomer is a dynamically cross-linked thermoplastic elastomer (TPV), it is superior in mechanical strength and weather resistance compared to a rubber sponge material. Durability can be improved.

  In the thirteenth aspect of the present invention, the dynamically crosslinked thermoplastic elastomer (TPV) has a resin content of 25% to 35% made of polypropylene and a rubber content mainly composed of EPDM rubber of 75% to 65%. It is a glass run for automobiles.

  In the thirteenth aspect of the present invention, the dynamically crosslinked thermoplastic elastomer (TPV) has a resin content of 25% to 35% made of polypropylene and a rubber content mainly composed of EPDM rubber of 75% to 65%. is there. For this reason, since it has rigidity and is excellent in elasticity, the glass run can hold and seal the door glass as the door glass moves up and down.

  Since the car outer side wall, the car inner side wall and the bottom wall of the glass la are formed of a sponge material of thermoplastic elastomer, it can be formed of a sponge material with a light specific gravity, which can greatly reduce the overall weight of the glass run. Can contribute to weight reduction of the vehicle. Further, since it is formed of a thermoplastic elastomer sponge material, it is superior in mechanical strength and weather resistance as compared with a rubber sponge material, so that the durability of the glass run can be improved.

  Since at least one of the vehicle outer side holding lip and the vehicle inner side holding lip is made of a thermoplastic elastomer solid material or a fine foam material, the vehicle outer side holding lip and the vehicle inner side holding lip formed of at least one solid material or fine foam material. The force with which the lip engages the door frame is increased, and the glass run can be securely held on the door frame. Furthermore, as compared with the case of forming with a sponge material, at least one of the vehicle outer side holding lip or the vehicle inner side holding lip can be formed small, and the operation of assembling the glass run to the door frame is easy.

It is sectional drawing of the state which mounted | wore the upper side part with the glass run which is the 1st Embodiment of this invention, and is sectional drawing along AA in FIG. It is sectional drawing of the state which mounted | wore the rear side vertical side part with the glass run which is the 2nd Embodiment of this invention, and is sectional drawing along AA in FIG. FIG. 6 is a partial enlarged cross-sectional view of a vehicle outer side wall in a state where a glass run according to a third embodiment of the present invention is mounted on a rear-side vertical side portion, and is a cross-sectional view along AA in FIG. 5. It is a front view of the glass run which is embodiment of this invention. It is a front view of a motor vehicle door. It is sectional drawing of the state which mounted | wore the upper side part of the door glass with the conventional glass run. It is sectional drawing of the other conventional glass run. It is sectional drawing of the state which mounted | wore the vertical side part of the door frame with the other conventional glass run. It is sectional drawing of the state which mounted | wore the other side of the conventional glass run to the upper side part of the door frame.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a front view of the front door 1 of the automobile, and FIG. 4 is a front view of the glass run 10 of the front door attached to the door frame 2 of the door 1. As shown in FIG. 5, 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. 4, the glass run 10 is attached to the straight part 11 formed by extrusion molding as a whole and the corner part 2b of the door frame 2, and is formed by molding by connecting the straight part 11 described above. Corner portion 12.
The straight portion 11 includes a glass run upper side portion 13 attached to the upper side portion of the door frame 2, a glass run rear side vertical side portion 14 attached to the rear side vertical side portion of the door frame 2, and a front side vertical length of the door frame 2. The glass run front side vertical side portion 15 is attached to the division sash that forms the side portion.

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

The embodiment of the present invention will be described by taking the glass run rear side vertical side portion 14 as an example, but the present invention can also be implemented for the glass run upper side portion 13 and the glass run front side vertical side portion 15.
First, the first embodiment will be described with reference to FIG. 1, and then the first and third embodiments will be described with reference to FIGS. 2 and 3, respectively.

As shown in FIG. 1, the cross-sectional shape of the glass run rear side vertical side portion 14 attached to the rear side vertical side portion of the door frame 2 is such that the main body is 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. 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. 1 is a cross-sectional view taken along line AA in FIG.
The main body of the glass run 10 basically has a substantially U-shaped cross-section in both the portion attached to the upper side portion of the door frame 2 and the portion attached to the vertical side portion.

  The glass run rear vertical side portion 14 of the present invention is attached to the rear side vertical side portion of the door frame 2, and the rear side vertical side portion of the door frame 2 is connected to the distal ends of the outer panel 2c and the inner panel 2d. A letter-shaped channel 3 is inserted. The front end of the outer panel 2c and the vehicle outer side wall of the channel 3 are fixed by welding or the like to form a vehicle outer flange 6, and the front end of the inner panel 2d and the vehicle inner side wall of the channel 3 are similarly fixed by welding or the like. A vehicle inner flange 7 is formed.

  The glass run rear side vertical side portion 14 is formed entirely of a thermoplastic elastomer sponge material except for vehicle outside holding lips 23 and 24 and vehicle inside holding lips 33 and 34, which will be described later. The overall weight can be greatly reduced, and the vehicle can be reduced in weight. If this 1st Embodiment is used for the glass run upper side part 13, since only the upper end of the door glass 5 goes in and out, the glass run upper side part 13 may make rigidity low, and is preferable for the weight reduction of a vehicle.

As a foaming method for forming the sponge material, chemical foaming, physical foaming, supercritical foaming, microcapsule foaming, or the like can be used.
For example, the following can be used as a foaming agent in chemical foaming.
That is, 4,4′-oxybis (benzenesulfonylhydrazide) (OBSH), azodicarbonamide (ADCA), N, N′-dinitrosopentamethylenetetramine (DPT), p-toluenesulfonylhydrazide (TSH), 2,2 '-Azobisisobutyronitrile (AIBN) and other organic foaming agents or inorganic foaming agents such as baking soda, combined chemical foaming agents combining two or more of these chemical foaming agents, and foaming aids in combination Can be mentioned.

  In addition, as inorganic carriers, reinforcing materials such as carbon black, inorganic fillers such as diatomaceous earth, calcium carbonate (charcoal), magnesium carbonate, zinc white, silica ash, silica, clay, talc, and silane couplings thereof. And the like that have been surface-treated with an agent or the like. In particular, diatomaceous earth is desirable from the viewpoint of surface appearance.

  This chemical foaming agent is preferably a material in which a 4,4′-oxybis (benzenesulfonylhydrazide) (OBSH) foaming agent is adsorbed and supported on an inorganic powder. If a 4,4'-oxybis (benzenesulfonylhydrazide) (OBSH) foaming agent adsorbed and supported on an inorganic powder is used, the foaming agent can be uniformly dispersed in the thermoplastic elastomer solid material. The foaming ratio can be easily controlled, the production is easy, and the foamed cells can be uniformly dispersed. Therefore, the surface of the glass run 10 is smooth, the appearance is excellent, and the glass run 10 is not partially lowered in rigidity.

  The specific gravity of the sponge material is preferably 0.6 to 0.8. When formed with a sponge material having a specific gravity of the vehicle inner side wall 30 of 0.6 to 0.8, the weight of the entire glass run 10 can be greatly reduced. In the embodiment of the present invention, the glass run 10 is formed of a sponge material having a specific gravity of 0.7.

  Further, since the glass run 10 is formed of a thermoplastic elastomer sponge material, a uniform fine foam can be obtained and the rigidity of the glass run 10 can be maintained. Moreover, since it is excellent in mechanical strength and weather resistance compared with a rubber sponge material, the durability of the glass run 10 can be improved. Further, since the bottom wall 40 is also formed of a sponge material, even if the door glass 5 rises and the upper end of the door glass 5 comes into contact with the bottom wall 40, the impact can be absorbed.

  When the glass run 10 is formed of a dynamically cross-linked thermoplastic elastomer (TPV) sponge material, it has superior mechanical strength and weather resistance compared to a rubber sponge material. Can be improved.

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. A vehicle outer side cover lip 22 extends from the tip of the vehicle outer side wall 20 in the vehicle outer direction along the vehicle outer side wall 20. The vehicle outer cover lip 22 and the vehicle outer side wall 20 sandwich the vehicle outer flange 6, and the vehicle outer cover lip 22 covers the outer surface of the vehicle outer flange 6.

A low sliding member layer 28 can be formed on the surface of the vehicle exterior seal lip 21. In this case, the sliding resistance between the vehicle exterior seal lip 21 and the door glass 5 can be reduced, and the smooth raising and lowering of the door glass 5 can be maintained.
The low sliding member layer 28 can be formed by applying a material with a small sliding resistance, a silicon resin or a urethane resin having a large ratio of the olefin portion of the same thermoplastic elastomer as the vehicle interior seal lip 31.
Moreover, since the vehicle outer side wall 20 is formed smaller than the vehicle inner side wall 30 described later, the vehicle outer side area of the door molding 50 can be reduced, which is preferable in terms of design.

Car exterior holding lips 23 and 24 are formed on the outer surface of the vehicle exterior side wall 20. The vehicle exterior holding lips 23, 24 are formed of a thermoplastic elastomer solid material or a fine foam material.
When the glass run 10 is attached to the door frame 2 and the vehicle outer flange 6 enters between the vehicle outer side wall 20 and the vehicle outer cover lip 22, the vehicle outer holding lips 23 and 24 engage with the recess 6 a of the vehicle outer flange 6. The vehicle outer side flange 6 is clamped by the vehicle outer side cover lip 22.

  When the vehicle outer side holding lips 23, 24 are engaged with the recesses 6a of the vehicle outer side flange 6, the force with which the vehicle outer side holding lips 23, 24 engage with the door frame 2 is strengthened, and the glass run 10 is securely attached to the door frame 2. Can be held. Furthermore, compared with the case of forming with a sponge material, the outside holding lips 23 and 24 can be formed smaller, and the operation of assembling the glass run 10 into the channel 3 of the door frame 2 is easy.

  Further, as shown in FIGS. 1 and 2, in the door frame 2 on the outside of the vehicle, the recess 6 a of the vehicle outer flange 6 on the outside of the vehicle is made small in order to reduce the step between the door frame 2 and the door glass 5. Therefore, the space for holding the vehicle outer side holding lip 23 is narrow. Accordingly, although the vehicle outer side holding lip 23 becomes small, the holding force of the vehicle outer side holding lip 23 can be ensured because it is made of a solid material or a fine foam material. Further, the vehicle outer side holding lip 24 is small but can have a sufficient holding force.

  Note that the low sliding member layer and the protrusion 25 may be formed on the inner surface of the vehicle outer side seal lip 21 or the inner surface of the vehicle outer side wall 20. In this case, when the door glass 5 enters the inside of the glass run 10, it is possible to prevent the vehicle outer side wall 20 and the vehicle outer seal lip 21 from coming into close contact with each other. Can do.

  The vehicle outer side wall 20 is connected to the bottom wall 40 by the vehicle outer side connection portion 26. The vehicle outer side connecting portion 26 is formed with a groove on the inner surface, and when the glass run 10 of the channel 3 is attached, even when the vehicle outer side wall 20 and the vehicle inner side wall 30 are opened in a square shape with the bottom wall 40 at the time of manufacture. It becomes easy to bend between the vehicle outer side wall 20 and the bottom wall 40, and attachment becomes easy.

The vehicle inner side wall 30 is formed in a cross-sectional plate shape and is formed thicker and larger than the vehicle outer side wall 20. For this reason, the glass run 10 can be firmly held on the door frame 2.
Further, since the vehicle interior side wall 30 is larger than the vehicle exterior side wall 20 and is formed thicker, the door glass 5 can be positioned in the vehicle exterior direction within the main body of the glass run 10. The level difference with the run 10 can be reduced to improve the appearance.

  A vehicle interior seal lip 31 extends obliquely from the front end of the vehicle interior side wall 30 toward the interior of the main body of the glass run 10. As described above, both side surfaces of the front end portion of the door glass 5 are held by the vehicle inner seal lip 31 and the vehicle outer seal lip 21. As the door glass 5 moves up and down, the vehicle inner side seal lip 31 and the vehicle outer side seal lip 21 come into contact with the side surface of the door glass 5, and the door frame 2 and the door glass 5 can be sealed.

A low sliding member layer 38 can be formed on the surface of the vehicle inner seal lip 31 in the same manner as the vehicle outer seal lip 21. In this case, the sliding resistance between the vehicle interior seal lip 31 and the door glass 5 can be reduced, and the smooth raising and lowering of the door glass 5 can be maintained.
The low sliding member layer 38 can be formed by applying a material having a small ratio of the olefin portion of the same thermoplastic elastomer as the vehicle exterior seal lip 21 and a low sliding resistance, or a silicon resin or a urethane resin.

  A vehicle interior cover lip 32 extends from the tip of the vehicle interior side wall 30 along the vehicle interior side wall 30. When the glass run 10 is attached to the door frame 2, the vehicle inner flange 7 enters between the vehicle inner side wall 30 and the vehicle outer cover lip 22, and the vehicle inner cover lip 32 covers the outer surface of the vehicle inner flange 7. The vehicle inner side flange 30 is clamped together with the vehicle inner side wall 30.

  On the outer surface of the vehicle inner side wall 30, vehicle inner holding lips 33 and 34 are formed on the front end side. The vehicle inner side holding lips 33 and 34 can be formed of a solid material or a fine foam material of a thermoplastic elastomer similarly to the vehicle outer side holding lips 23 and 24. When formed of a thermoplastic elastomer solid material or fine foam material, the force with which the vehicle interior holding lips 33 and 34 engage with the door frame 2 becomes stronger than when formed of a sponge material. 10 can be securely held on the door frame 2, and the vehicle inner side wall 30 does not come off the vehicle inner flange 7. Furthermore, compared with the case where it is formed of a sponge material, the vehicle interior holding lips 33 and 34 can be formed small, and the work of assembling the glass run 10 in the channel 3 of the door frame 2 is easy. The vehicle-side holding lips 23 and 24 may be formed of a sponge material, and the vehicle-side holding lips 33 and 34 may be formed of a thermoplastic elastomer solid material or a fine foam material.

  The vehicle interior side wall 30 is connected to the bottom wall 40 by a vehicle interior connection portion 36. A groove portion is formed on the inner surface of the vehicle inner side connection portion 36, and when the glass run 10 of the channel 3 is attached, the vehicle inner side connection portion 30 is easily bent between the vehicle inner side wall 30 and the bottom wall 40 like the vehicle outer side connection portion 26. Becomes easier.

The bottom wall 40 is formed in a substantially plate shape, and a groove portion is formed so as to be easily bent at a continuous portion between the vehicle inner side wall 30 and the vehicle outer side wall 20. The outer surface of the bottom wall 40 is in contact with the inner surface of the channel 3 to seal between the channel 3 and the glass run 10.
A low sliding member layer can be formed on the surface of the bottom wall 40 in the same manner as the vehicle exterior seal lip 21. In this case, adhesion between the bottom wall 40 and the door glass 5 and sliding resistance can be reduced.

  The bottom wall 40 is also formed of the same sponge material as the vehicle outer side wall 20 and the vehicle inner side wall 30. Since the bottom wall 40 is formed of a sponge material, even if the door glass 5 rises and comes into contact with the bottom wall 40, the shock can be absorbed by the sponge material, the occurrence of collision noise can be prevented, and the weight can be reduced. Contributing.

  Next, a second embodiment of the present invention will be described with reference to FIG. Compared to the first embodiment, the second embodiment has a vehicle outer seal lip 21, a vehicle outer cover lip 22, a vehicle inner seal lip 31, and a vehicle inner cover lip 32 that are made of a thermoplastic elastomer solid material or slightly foamed. The difference is that it is made of solid material. Therefore, a different point is demonstrated and description of the same point is abbreviate | omitted.

  The glass run rear side vertical side portion 14 is the same as the first embodiment in that the vehicle outer side wall 20, the vehicle inner side wall 30, and the bottom wall 40 are formed of a sponge material of thermoplastic elastomer. For this reason, a large portion of the volume of the glass run 10 can be formed with a sponge material having a low specific gravity, the overall weight of the glass run 10 can be greatly reduced, and the weight of the vehicle can be reduced. Can contribute. In addition, when formed with a dynamic cross-linked thermoplastic elastomer (TPV) sponge material, it has superior mechanical strength and weather resistance compared to a rubber sponge material. Can be improved.

  The vehicle exterior seal lip 21, the vehicle interior seal lip 31, the vehicle exterior cover lip 22, and the vehicle interior cover lip 32 are formed of a solid material or a fine foam material. Therefore, the rigidity of the vehicle exterior seal lip 21, the vehicle interior seal lip 31, the vehicle exterior cover lip 22 and the vehicle interior cover lip 32 is improved, and the door glass 5 moves up and down in the glass run 10 so that the glass run 10 When the vehicle body enters the main body, the vehicle outer side wall lip 21 and the vehicle inner side seal lip 31 are not deformed abnormally by sliding friction due to the tip of the door glass 5, and the vehicle outer side wall 20 and the vehicle inner side wall 30 are connected to the vehicle outer side seal lip. 21 and the vehicle interior seal lip 31 are not deformed abnormally by being pulled, and durability can be ensured. For this reason, it is preferable to use the second embodiment for the glass run rear side vertical side portion 14 and the glass run front side vertical side portion 15.

  Furthermore, since the vehicle outer side cover lip 22 and the vehicle inner side cover lip 32 are also formed of a solid material or a fine foam material, the vehicle outer side wall 20 and the vehicle inner side wall 30 are deformed abnormally when the door glass 5 is raised and lowered. The glass run 10 does not jump out of the door frame 2 and is attractive. Moreover, since it is a solid material or a fine foam solid material, the surfaces of the vehicle outer side cover lip 22 and the vehicle inner side cover lip 32 are smooth, which is preferable in terms of design.

  The vehicle exterior seal lip 21, the vehicle interior seal lip 31, the vehicle exterior cover lip 22, and the vehicle interior cover lip 32 are formed of a solid material or a fine foam solid material having a specific gravity of 0.8 to 1.2. In the case of a fine foam solid material, the specific gravity is about 0.8 to 1.0, and in the case of a solid material, the specific gravity is about 1.0 to 1.2. For this reason, it is possible to suppress an increase in weight while maintaining the rigidity of the vehicle exterior seal lip 21, the vehicle interior seal lip 31, the vehicle exterior cover lip 22, and the vehicle interior cover lip 32. In the present embodiment, the vehicle outer side seal lip 21, the vehicle inner side seal lip 31, the vehicle outer side cover lip 22 and the vehicle inner side cover lip 32 are formed of a fine foam solid material having a specific gravity of 0.9.

Low sliding member layers 28 and 38 can be formed on the surfaces of the vehicle outer seal lip 21 and the vehicle inner seal lip 31. In this case, sliding resistance between the vehicle outer side seal lip 21, the vehicle inner side seal lip 31 and the door glass 5 can be reduced, and the smooth raising and lowering of the door glass 5 can be maintained.
The low sliding member layers 28 and 38 can be formed by applying a material having a large ratio of the olefin portion of the thermoplastic elastomer and a low sliding resistance, or a silicon resin or a urethane resin.

  Next, a third embodiment of the present invention will be described with reference to FIG. The third embodiment differs from the first embodiment in the root portions of the vehicle outer side holding lips 23, 24 and the vehicle inner side holding lips 33, 34 formed from the vehicle outer side wall 20 and the vehicle inner side wall 30. . Therefore, a different point is demonstrated and description of the same point is abbreviate | omitted.

  In the third embodiment, when the vehicle outer side holding lips 23, 24 and the vehicle inner side holding lips 33, 34 are formed of a solid material or a fine foamed material of thermoplastic elastomer, the vehicle outer side wall 20 and A portion 23a adjacent to the roots of the vehicle outer side holding lips 23, 24 and a portion adjacent to the roots of the vehicle inner side holding lips 33, 34 in the vehicle inner side wall 30 are formed of a solid material or a fine foam material of a thermoplastic elastomer. . When any one of the vehicle outer side holding lips 23, 24 and the vehicle inner side holding lips 33, 34 is formed of a thermoplastic elastomer solid material or a fine foamed material, the vehicle outer side holding lips 23, 24 are formed of the solid material or the fine foamed material. The portion 23a adjacent to the base of the vehicle outer side holding lips 23, 24 or the portion adjacent to the root of the vehicle inner side holding lips 33, 34 in the vehicle outer side wall 20 or the vehicle inner side wall 30 on the outer side is a solid material or a fine material of thermoplastic elastomer. It is made of foam material.

  For this reason, when the glass run 10 is attached to the door frame 2, the vehicle outer side holding lips 23, 24 or the vehicle inner side holding lips 33, 34 formed of a thermoplastic elastomer solid material or fine foam material are pressed. Even when subjected to deformation stress, the root portion of the vehicle outer side holding lip or the root portion of the vehicle inner side holding lip is firmly held by the vehicle outer side wall 20 or the vehicle inner side wall 30 and hardly deforms. The force held at 2 is increased. The same applies to the case where both the vehicle outer side holding lips 23, 24 and the vehicle inner side holding lips 33, 34 are formed of a thermoplastic elastomer solid material or fine foam material.

In the third embodiment, the vehicle outer side holding lips 23, 24 or the vehicle inner side holding lips 33, 34 formed of a solid material or a fine foam material of thermoplastic elastomer are respectively connected to the vehicle outer side wall 20 and the vehicle inner side wall 30. The angle formed (X in FIG. 3) forms an acute angle of less than 45 degrees, and the tip thereof is tapered. Even when both the outer side holding lips 23, 24 or the inner side holding lips 33, 34 are formed of a thermoplastic elastomer solid material or a fine foam material, both of them form an acute angle of less than 45 degrees, and the tip thereof is tapered. Formed.
For this reason, when the glass run 10 is attached to the door frame 2, the resistance is low and the glass run 10 can be fitted into the recesses 6 a and 7 a of the flanges 6 and 7 of the door frame 2. After the combination, the vehicle outer side holding lips 23, 24 or the vehicle inner side holding lips 33, 34 are difficult to come off from the flanges 6, 7. Since the vehicle outer side holding lips 23 and 24 and the vehicle inner side holding lips 33 and 34 have tapered tips, they can be brought into close contact according to the shape of the door frame 2 and have good sealing properties.

  The corner portion 12 of the glass run 10 is formed of a solid material or a fine foam solid material similar to the glass run rear side vertical side portion 14. Since it is formed of a solid material or a finely foamed solid material, the mold connection process in the corner portion 12 is simplified and the manufacture is easy only by injecting the solid material or the finely foamed solid material into the molding die. The corner portion 12 of the glass run 10 has a small proportion of weight in the entire glass run 10 and has almost no effect on the weight increase of the glass run 10 without using a sponge material.

In the molding of the straight portion 11 of the glass run 10, a thermoplastic elastomer solid material or a finely foamed solid material and a sponge material are used as the molding material.
The corner portion 12 of the glass run 10 is also formed of a thermoplastic elastomer. It is the same kind of material and has good adhesion between the straight portion 11 and the corner portion 12 of the glass run 10. In addition, both are olefin-based materials, have good weather resistance, can be pulverized at the same time, and can be easily recycled.

  A dynamically cross-linked thermoplastic elastomer (TPV) is used as the thermoplastic elastomer, the resin content of the dynamically cross-linked thermoplastic elastomer (TPV) is 25% to 35%, and EPDM rubber is the main material. It is preferable to use those having a rubber content of 75% to 65%. In this case, since it has rigidity and is excellent in elasticity, the glass run 10 can hold and seal the door glass 5 as the door glass 5 moves up and down.

2 Door frame 5 Door glass 10 Glass run 20 Car outer side wall 21 Car outer side seal lip 22 Car outer side cover lip 23, 24 Car outer side holding lip 30 Car inner side wall 31 Car inner side sealing lip 32 Car inner side cover lip 33, 34 Car inner side holding Lip 40 bottom wall

Claims (13)

In the glass run for automobiles that is attached to the inner periphery of the door frame of the automobile door and guides the raising and lowering of the door glass,
The main body of the glass run has a substantially U-shaped cross section composed of an outer side wall, an inner side wall, and a bottom wall, and the outer side wall and the inner side wall have a substantially U-shaped cross section of the main body, respectively. A vehicle outer seal lip and a vehicle inner seal lip extending toward the inner side of the main body are provided, and the vehicle outer surface and the vehicle inner surface of the end portion of the door glass are sealed by the vehicle outer seal lip and the vehicle inner seal lip;
On the outer surface of the vehicle outer side wall and the vehicle inner side wall facing the door frame, a vehicle outer side holding lip and a vehicle inner side holding lip that engage with the recess of the door frame are provided,
In the glass run, the vehicle outer side wall, the vehicle inner side wall, and the bottom wall are formed of a sponge material of thermoplastic elastomer,
At least one of the vehicle outer side holding lip and the vehicle inner side holding lip is formed of a solid material or a fine foam material of the thermoplastic elastomer.   The glass run for automobiles according to claim 1, wherein the vehicle outer side holding lip is formed of a solid material or a fine foam material of the thermoplastic elastomer, and the vehicle inner side holding lip is formed of a sponge material of the thermoplastic elastomer. .   The automotive glass run according to claim 1, wherein the vehicle outer side holding lip and the vehicle inner side holding lip are formed of a solid material or a fine foam material of the thermoplastic elastomer.   At least one of the vehicle outer side holding lip and the vehicle inner side holding lip is formed of the thermoplastic elastomer solid material or the fine foam material, and at least one of the thermoplastic elastomer solid material or the fine foam material. 4. The vehicle outer side wall and the vehicle inner side wall portion adjacent to the bases of the vehicle outer side holding lip and the vehicle inner side holding lip are formed of a solid material or a fine foam material of the thermoplastic elastomer. The glass run for automobiles according to claim 1.   At least one of the vehicle outer side holding lip and the vehicle inner side holding lip formed of the thermoplastic elastomer solid material or fine foam material has an acute angle of less than 45 degrees with at least one of the vehicle outer side wall or the vehicle inner side wall. The glass run for automobiles according to any one of claims 1 to 4, wherein the tip thereof is tapered.   The vehicle outer side wall and the vehicle inner side wall are respectively provided with an outer vehicle side cover lip and a vehicle inner side cover lip extending along the vehicle outer side wall and the vehicle inner side wall on the outer side of the main body in a substantially U-shaped cross section. 6. The vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip, and the vehicle inner seal lip are formed of the thermoplastic elastomer solid material or fine foam material according to any one of claims 1 to 5. The glass run for automobiles described.   The vehicle outer side wall and the vehicle inner side wall are respectively provided with an outer vehicle side cover lip and a vehicle inner side cover lip extending along the vehicle outer side wall and the vehicle inner side wall on the outer side of the main body in a substantially U-shaped cross section. The vehicle outer cover lip, the vehicle inner cover lip, the vehicle outer seal lip, and the vehicle inner seal lip are formed of the thermoplastic elastomer sponge material for an automobile according to any one of claims 1 to 5. Glass run.   The glass run for an automobile according to any one of claims 1 to 7, wherein the thermoplastic elastomer sponge material has a specific gravity of 0.6 to 0.8.   The automotive glass run according to any one of claims 1 to 8, wherein the solid material or the micro-foamed solid material of the thermoplastic elastomer has a specific gravity of 0.8 to 1.2.   The glass run for automobiles according to any one of claims 1 to 9, wherein a low sliding member layer is formed on the surfaces of the vehicle exterior seal lip, vehicle interior seal lip, and bottom wall.   The vehicle interior side wall according to any one of claims 1 to 10, wherein the vehicle interior side wall and the vehicle interior seal lip are larger than the vehicle exterior side wall and the vehicle exterior seal lip, respectively, and are formed to be thick. Glass run.   The automotive glass run according to any one of claims 1 to 11, wherein the thermoplastic elastomer is a dynamically crosslinked thermoplastic elastomer (TPV).   13. The automobile according to claim 12, wherein a resin component comprising the dynamically cross-linked thermoplastic elastomer (TPV) and polypropylene is 25% to 35%, and a rubber component mainly composed of EPDM rubber is 75% to 65%. Glass run.

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